Office furniture abstract
A flush pull arrangement for office furniture and the like, and
specifically, for use in connection with office furniture drawers
and doors, in which the drawer or door front panel is formed with
a quadrilateral opening to receive a quadrilateral open centered
trim piece that is flanged about its forwardly facing side for fitting
flush up against the front panel front surface, and that has opposed
ridges coplanar therewith, on two opposed rails thereof, and along
the rearwardly facing side of the trim piece, proportioned for snap
fitting into the front panel opening. The front panel opening is
formed on two opposed sides of same with a pair of opposed centering
tabs that cooperate with correspondingly located notches formed
in the rearward side of the trim piece, on the other pair of rails
thereof, for centering the trim piece in the panel opening, and
with which the trim piece has snap fit relation in applying the
trim piece to the front panel opening. A cover having a pair of
opposed edge portions each formed with a pair of spring tabs disposed
one at either end of same, which cover edge portions are received
in grooves formed in the trim piece between the flanges and ridges
thereof, along the trim piece rails bearing the latter, and with
the tabs thereof straddling the trim piece, to lock the trim piece
in place and fix both the trim piece and cover against rattle. A
hand tool for applying the cover to the trim piece is also disclosed.
Office furniture claims
I claim:
1. A pull arrangement comprising:
a plate member having a planar portion defining a front surface
on one side of same and a rear surface on the other side of same,
an aperture formed in said planar portion,
an open centered planar trim piece seated in said aperture and
having a front portion on the front side of said plate member and
a rear portion on said trim piece defining a flange portion along
each of two diametrically opposed segments of said trim piece projecting
in the plane of said trim piece and outwardly of same that are in
abutting relation with said plate member front surface and are at
the front side of said trim piece,
said trim piece further defining along each of said segments thereof
a ridge projecting outwardly of said trim piece and in the plane
thereof, with said ridges being on the rear side of said trim piece,
said ridges and flange portions of the respective trim piece segments
being separated therealong to define a slot along the respective
trim piece segments,
said ridges being proportioned in the plane of said trim piece
for making the rear portion of said trim piece movable through said
aperture from the front side of said plate member when one of the
opposed marginal portions of said plate member defining said aperture
is lodged in one of said slots with the rear side of the trim piece
facing rearwardly of said plate member,
means for centering said trim piece within said aperture,
and a cover member on the other side of said plate member and defining
opposed edge portions respectively frictionally received in said
trim piece grooves,
said cover member edge portions each defining a tab at either end
of same and disposed to one side of said trim piece,
with said tabs of each cover member edge portion being compressed
against said plate member rear surface in straddling relation to
said trim piece for holding said trim piece and cover to said plate
member against rattle.
2. The pull arrangement set forth in claim 1 wherein said centering
means comprises:
said plate member aperture being formed to define a pair of oppositely
positioned tabs in opposed relation,
said trim piece rear portion being formed to define a pair of oppositely
positioned notches respectively receiving the respective plate member
tabs,
said trim piece notches being of like stepped depths defining a
rearwardly disposed notch portion of greater dimension proportioned
for lost motion relation to said plate member tabs to accommodate
said movement of said trim piece rear portion into said aperture,
and a forwardly disposed notch portion closely receiving the respective
plate member tabs and being in snap fitting centered relation thereto.
3. The pull arrangement set forth in claim 1 wherein:
said cover member defines a back portion spaced rearwardly of said
plate member rear surface and substantially paralleling said plate
member planar portion,
said cover member edge portions being angled forwardly of said
trim piece, relative to the plane of said plate member planar portion,
at an angle approximately four degrees.
4. A pull arrangement comprising:
a plate member having a planar portion defining a front surface
on one side of same and a rear surface on the other side of same,
an aperture of quadrilateral configuration formed in said planar
portion,
an open centered planar, quadrilateral trim piece seated in said
aperture and having a front portion on the front side of said plate
member and a rear portion on said trim piece defining a flange portion
along each of two diametrically opposed lengths of said trim piece
projecting oppositely in the plane of said trim piece and outwardly
of same that are in abutting relation with said plate member front
surface and are at the front side of said trim piece,
said trim piece further defining along each of said lengths thereof
a ridge projecting outwardly of said trim piece and in the plane
thereof, with said ridges being on the rear side of said trim piece,
and being oppositely disposed,
said ridges and flange portions of the respective trim piece lengths
being separated therealong to define a slot along the respective
trim piece lengths,
said ridges being proportioned in the plane of said trim piece
to sufficiently exceed the corresponding dimension of said aperture
for making the rear portion of said trim piece movable through said
aperture from the front side of said plate member when one of the
opposed marginal portions of said plate member defining said aperture
is lodged in one of said slots with the rear side of the trim piece
facing rearwardly of said plate member,
means for centering said trim piece within said aperture,
and a cover member on the other side of said plate member and defining
opposed edge portions respectively frictionally received in said
trim piece grooves against the rear surface of said plate member,
said cover member edge portions each defining a tab at either end
of same and disposed one at either end of said trim piece,
with said tabs of each cover member edge portion being compressed
against said plate member rear surface in straddling relation to
said trim piece for holding said trim piece and cover to said plate
member against rattle.
5. The pull arrangement set forth in claim 4 wherein said centering
means comprises:
said plate member aperture being formed to define a pair of oppositely
positioned tabs in opposed relation one at either end of said aperture,
said trim piece rear portion being formed, at either end of said
trim piece, to define a pair of oppositely positioned notches respectively
receiving the respective plate member tabs,
said trim piece notches being of like stepped depths defining a
rearwardly disposed notch portion of greater dimension proportioned
for lost motion relation to said plate member tabs to accommodate
said movement of said trim piece rear portion into said aperture,
and a forwardly disposed notch portion closely receiving the respective
plate member tabs and being in snap fitting centering relation thereto.
6. The pull arrangement set forth in claim 4 wherein:
said cover member comprises an element of channel shaped transverse
cross-sectional configuration with the ends of same disposed adjacent
the aperture ends,
said cover member having a flange portion across either end of
same.
7. The pull arrangement set forth in claim 6 wherein:
said plate member comprises the front panel of a drawer,
said cover member flange portions being disposed in parallelism
with said cover member.
8. The pull arrangement set forth in claim 6 wherein:
said plate member is a door front panel,
said cover member flange portions being disposed normally of said
cover member to close the pull arrangement at either end of said
aperture.
Office furniture description
This invention relates to a flush pull arrangement for office furniture
drawers and doors, and more particularly, to a pull arrangement
that is essentially flush with the front side of the door or drawer
front involved, and provides a hand gripping recess or pocket into
which one may insert his fingers to move the door or drawer involved
to open same.
Pull arrangements for office furniture file drawers and cabinet
doors, and the like, conventionally have long been in the form of
a handle suitably applied to the front surface of the drawer or
door involved that is to be grasped by the user to move the drawer
or door to open position. Pulls of this type necessarily project
forwardly of the door or drawer involved, and form obstructions
to passers-by that can and have caused injury, and that aesthetically
are sometimes disfiguring.
More recently pull arrangements have come into use which involve
the drawer or door front panel being in effect recessed to define
a pocket into which the operator is to extend his fingers to grasp
the drawer or door to pull same to the open position. Pull devices
of this type frequently involve a trim piece or portion which overlies
the marginal portions of the front panel involved that define the
pull opening, a cover member that is applied to the inside of the
front panel involved to close off the front panel pull opening and
limit the pull pocket, and suitable securing screws or comparable
fasteners that hold these parts together, or alternately, the trim
piece and cover are suitably bonded in place, utilizing welding
procedures or the like.
Of course, utilizing screws or the like to secure the pull components
in place requires added parts and labor to complete the pull. Bonding
of such parts in place, in addition to the labor involved, requires
special treatment of the metal surfaces involved, after the pull
has been applied to the front panel involved, so that distortions
and other surface imperfections due to welding or the utilizing
of other forms of bonding will be eliminated.
A principal object of the invention is to provide a flush pull
arrangement for office furniture that requires no extra fasteners
or bonding to secure the pull in place.
Another principal object of the invention is to provide a pull
arrangement consisting of two principal components, in addition
to the drawer or door front panel involved, that are formed for
securement to each other in cooperation with the door or drawer
front panel involved, such that the pull components are fixed to
each other and to the front panel without using separate fasteners
or bonding, in such a manner that all parts are made fast against
rattle.
Other objects of the invention are to provide a pull arrangement
that is aesthetically attractive in appearance, and that is applicable
to all types of office furniture equipment utilizing pulls, including
applications where lock devices are to be associated with the pull,
and to provide a pull arrangement that is economical of manufacture,
convenient to install, and long lived in use.
In accordance with the present invention, the pull arrangement
comprises an open centered trim piece of rectangular shape that
is to be applied to the drawer or door front panel involved, the
latter being formed with a correspondingly shaped rectangular opening
into which the trim piece is to be disposed. The trim piece is flanged
about its forwardly facing side for abutting relation with the front
panel involved, about the margin of its opening, and the trim piece
along each of its two longer rails, and at its rearwardly facing
side, is formed with a laterally projecting ridge, which ridges
are coplanar with the trim piece, and are proportioned to make the
trim piece, along its two longer rails, too larger to fit through
the front panel opening. The two shorter rails of the trim piece
are notched for two phase cooperation with correspondingly located
centering tabs that are defined by the front panel, and the trim
piece longer rails are each formed with a groove or slot between
the flange and ridge of the respective longer rails, whereby when
the trim piece is to be applied to the front panel opening, the
trim piece has its rear side aligned with the opening in congruent
relation therewith, except that one longitudinal edge of the front
panel opening is seated in one of the trim piece longer rail slots
to dispose the trim piece sufficiently off center of the front panel
opening to permit the other trim piece longer rail ridge to be inserted
through the front panel opening, whereby the front panel tabs will
have snap fitting relation with the trim piece shorter rails at
their said notches, and when the trim piece is snap fitted past
the front panel tabs, such tabs center the trim piece within the
front panel opening.
Associated with the trim piece, for closing off the pull opening
and making the trim piece fast against rattle, is a cover member
of elongate channel shaped configuration having along its respective
side flanges an edge portion, which edge portions are disposed in
opposed relation and each define at either end of same a spring
tab, which tabs of each cover member edge portion are spaced apart
to receive the trim piece between them. The respective cover member
edge portions are received in the respective trim piece longer rail
grooves or slots, to complete assembly of the device, with the cover
member edge portions being separated as needed, as by employing
suitable hand tooling or camming techniques, to apply the cover
member edge portions to the respective trim member slots, and with
the tabs of each cover member edge portions straddling the trim
piece and bearing against the rear side of the front panel to bind
the pull components together and against the front panel whereby
all parts are held against rattle. The cover member edge portion
tabs preclude lateral movement of the cover member relative to the
trim piece in the plane of the front panel.
Other objects, uses, and advantages will be obvious or become apparent
from a consideration of the following detailed description and the
application drawings.
In the drawings:
FIG. 1 is a front elevational view of a lateral file assembly on
which is applied an over file assembly, both of which have the invention
of this application applied thereto;
FIG. 2 is a fragmental cross-sectional view taken substantially
along line 2--2 of FIG. 1 but on a substantially enlarged scale,
showing the three components of the pull of this invention;
FIG. 3 is a diagrammatic exploded perspective view further illustrating
the pull arrangement of the present invention;
FIG. 4 is an end view of the pull cover member that is shown in
FIGS. 2 and 3;
FIG. 4A is a fragmental view similar to that of FIG. 4 but showing
the pull cover modified for door application;
FIG. 5 is a sectional view taken substantially along line 5--5
of FIG. 2 better indicating the manner in which the pull cover
is applied to the pull trim piece to hold the pull components together;
FIG. 6 is a diagrammatic plan view taken from the front side of
the pull and illustrating the manner of applying the pull trim piece
to the drawer or door front panel, in accordance with the present
invention;
FIGS. 7 and 8 are fragmental plan views taken from the rear side
of FIG. 6 and illustrating additional specifics of applying the
pull front piece to the drawer or door front panel;
FIG. 9 is an edge view of one of the trim piece shorter rails better
illustrating its notch and giving a two positioning of the front
panel relative thereto as the trim piece is being applied to the
front panel, with the showing being substantially along lines 9--9
of FIGS. 7 and 8 for illustrative purposes (with the plate member
30 being shown in dashed lines);
FIG. 10 is a plan view of the pull assembly as shown in FIG. 5
but partially in section and indicating the procedural steps taken
to apply the pull cover to the pull trim piece to bind these parts
and the drawer or door front panel in rattle-free mounted relation;
FIG. 11 is a plan view of a suitable hand tool that may be employed
to apply the pull cover to the pull trim piece;
FIG. 12 is an end view of the tool of FIG. 11 taken along line
12--12 of FIG. 11; and
FIG. 13 is a view similar to that of FIG. 3 but illustrating how
the invention may be applied to desk drawers.
However, it is to be distinctly understood that the specific drawing
illustrations provided are supplied primarily to comply with the
requirements of the Patent Laws, and that the invention is susceptible
of other embodiments that will be obvious to those skilled in the
art, and which are intended to be covered by the appended claims.
Reference numeral 10 of FIG. 1 generally indicates a filing arrangement
comprising a file assembly 12 on top of which is applied an overfile
assembly 14.
The file assembly 12 is of the lateral type and comprises a file
cabinet 16 to which are applied a number of roll out drawers 18
each including a drawer front 20 having a pull arrangement 22 of
this invention applied thereto.
The overfile 14 comprises cabinet 24 to which a pair of oppositely
sliding doors 26 and 28 have been applied, each equipped with a
pull 22 arrangement in accordance with this invention.
Aside from the arrangement of the pull 22 the lateral file 12
and the overfile 14 may be considered entirely conventional in arrangement.
Of course, one or more of the pull out drawers 18 may be replaced
by a roll out shelf of conventional design equipped with a swing
up door, the front door of which may have the flush pull of this
invention applied thereto, as well be apparent to those fully conversant
with the office equipment field. The invention is also fully applicable
to vertical file drawers and desk drawers as will be apparent to
those familiar with the office furniture field.
The general nature of the pull arrangement 22 is illustrated in
FIGS. 2 and 3 wherein it will be seen that the pull arrangement
comprises a plate member 30 which in practice will be the front
panel of the drawer 20 or the doors 26 and 28 (or their equivalents
in other pieces of office furniture). In this connection it is pointed
out that the drawer fronts 20 conventionally comprise a front panel
32 and a rear panel 34 (see FIG. 1) suitably applied thereto. Cabinet
doors, such as doors 26 and 28 usually comprise a front panel 36
which is free of any back or rear panel, as is well known to those
skilled in these arts.
In any event, for purposes of this disclosure the plate member
30 may either comprise the front panel 32 of drawer fronts 20 the
front panel 36 of cabinet doors 26 and 28 or the front panel of
any piece of office equipment to which the pull is applicable.
The plate member 30 in addition to being formed for use as part
of a drawer front or as a cabinet door (etc.), is formed to define
pull opening 40 that receives pull trim piece 42 which defines the
pull access opening 44 and which has applied to same the pull cover
46 that closes off the pull access opening 44 and, in accordance
with the present invention, binds the pull components together,
without using screws or other mechanical fasteners, or employing
bonding procedures such as welding, whereby the pull components
are held together against rattle.
Pull opening 40 defines lower and upper longer margins 43 and 45
and shorter side margins 47 and 49 which are rectilinear in configuration.
Further in accordance with the invention, the pull trim piece 42
which has lower and upper rails 52 and 54 and side rails 56 and
58 defining an open centered frame 60 is flanged as at 62 about
its forward or front side 64 and along its longer rails 52 and
54 is formed with oppositely directed ridges 66 that are disposed
at the rearward or back side 68 of the trim piece, with the ridges
66 being separated from the flanging 64 along the rails 52 and 54
by the respective slots 70.
The opening or aperture 40 of the plate member 30 is of the same
general rectangular configuration as the trim piece 42 except that
the front and rear sides 64 and 68 of the trim piece are of greater
lateral dimensions along the longer length dimension of the pull
access opening 44 and transversely of the trim piece. In accordance
with this invention, the flanging 62 which extends lengthwise of
all of the trim piece rails 52 54 56 and 58 is proportioned to
abut the front side 72 of the plate member 30 about the margins
of opening 40 while the ridges 66 are proportioned so that the
pull has a dimension transversely of its longer rails 52 and 54
(dimension A of FIG. 2) which exceeds the corresponding dimension
B of opening 40 such that the trim piece rear or back side 68 will
not slip directly through the opening 40 of plate member 30 (see
FIG. 2).
Opening 40 further in accordance with the invention, is formed
to define a pair of opposed tabs 74 and 76 that are located in centered
relation at the mid point of the narrow sides of the opening 40
for cooperation with the special stepped depth notches 78 and 80
that are formed in the trim piece respective side rails 56 and 58.
Notches 78 and 80 each define a wide portion 81 and a narrow portion
83 with the notch portions 83 being proportioned to receive the
respective tabs 74 and 76. Notches 78 and 80 each define opposing
external corners or shoulders 85 and 87 (see FIG. 9). As will be
made clear hereinafter, the tabs 74 and 76 and shoulders 85 and
87 of trim piece notches 78 and 80 are arranged for snap fitting
relation in a manner that accommodates snap fitting of the trim
piece 42 into the opening 40 and centering of the trim piece 42
with respect thereto.
The cover member 46 comprises a channel member 82 defining a web
portion 84 and spaced side flanges 86 and 88 along either side of
same and extending normally thereof. The respective angled edge
portions 90 and 92 which are disposed in opposed relation, and are
centrally notched or recessed, as indicated at 94 and 96 (see FIG.
3), respectively, whereby the edge portion 90 defines tabs 98 and
100 adjacent either end thereof and the edge portion 92 defines
tabs 102 and 104 adjacent their respective ends of same and generally
opposing the respective tab portions 98 and 100 of the edge portion
90.
As indicated in FIG. 4 the edge portions 90 and 92 of the channel
member 82 are angled to their respective side flanges 86 and 88
so as to make obtuse angles therewith on the order of 94 degrees,
whereby the cover member edge portions 90 and 92 spring bias the
pull components in binding relation against rattle when these parts
have been assembled as hereinafter described.
Before describing the special manner of assembly that is contemplated
by the present invention for the pull arrangement 22 reference
to FIGS. 2 and 3 will reveal several dimensional proportions that
are important aspects of the invention.
Thus, the dimension B of the plate member opening 40 somewhat exceeds
the corresponding distance between the bottom surfaces 110 of the
respective grooves 70 so that the pull trim piece 42 when it has
been snap fitted into place within pull opening 40 of plate member
30 has a certain amount of lost motion along the dimension B of
the opening 40.
However, the dimensioning of the opening 40 along dimension C substantially
complements or slightly exceeds the dimension D between the planar
surfaces 112 and 114 of the trim piece side rails 56 and 58 that
extend normally of the trim piece flanging 64 at either end of the
trim piece.
The cover member edge portions 90 and 92 along the longitudinal
margins 93 and 95 of their notches 94 and 96 are separated by a
dimension that substantially equals the dimension between the trim
piece groove bottom surfaces 110 for engagement therewith, as indicated
in FIG. 2.
In addition, the thickness of the plate member 30 and the thickness
of the cover member edge portions 90 and 92 relative to the width
of the respective grooves 70 is made such that, when the cover
member edge portions 90 and 92 are applied to the trim piece 42
after the latter has been mounted in pull opening 40 the edge portions
90 and 92 make a force friction fit within the grooves 70.
The web portion 84 of the channel member 82 in the form shown includes
projecting end portions 130 and 132. When the pull arrangement is
to be applied to a drawer or door that is not to have a rear panel,
the end portions are angled 90 degrees forwardly of the web portion
84 to close off the sides of the pull, as indicated in FIG. 4A.
The pull components are assembled, in accordance with the present
invention, and to apply them to drawers and doors of the type indicated
in FIG. 1 in the following manner:
The trim piece 42 is aligned congruently with the pull opening
40 and the trim piece rear side 68 along one of the rails 52 or
54 of same, say the rail 52 inserted through the opening 40 the
trim piece 42 is then disposed relative to the plate member 30 such
that the bottom margin 43 of the pull opening 40 is seated in the
groove or recess 70 of the bottom rail 52 to the full depth of
such recess 70. This is indicated at step 1 of FIGS. 6 and 7 which
results in the trim piece lower rail 52 having its ridge 66 protruding
through the opening 40 of plate member 30 along the lower margin
43 of the opening 40 with the tabs 74 and 76 respectively bearing
against the respective external shoulders 85 of the respective notches
78 and 80 (see FIGS. 7 and 9), and thus being disposed within the
respective notch portions 81.
The forward side 64 of the trim piece is then pressed inwardly
of the opening 40 (and rearwardly of the front surface 72 the plate
member 30), along the upper portion of the trim piece in the area
of its rail 54 with some bias being applied to the trim piece to
slide it upwardly of opening 40 as indicated by the numbered steps
2 and 3 of FIGS. 6 and 8. This results in the ridge 66 of the upper
rail 54 being pressed into opening 40 with the plate member flexing
accordingly due to the bearing of its tabs 74 and 76 on corners
85 with the parts being proportioned so that as the trim piece
top flanging nears engagement with thee front surface of plate member
30 the tabs 74 and 76 will snap past the shoulders 85 whereupon
the tabs 74 and 76 are received in the respective notch portions
83 at either end of the trim piece 42 (see FIGS. 5 8 and 9), which
loosely centers the trim piece 42 within the opening 40. The proportioning
of the tabs 74 and 76 along their dimensions relative to the notch
portions 83 is such that margins 43 and 45 of opening 40 will be
disposed in trim piece slots 70 whereby the trim piece will be
held against movement in the plane of the member 30 that would permit
unseating of trim piece rear side 68 from the opening 40.
It will thus be seen that the dimension A of the trim piece, relative
to the dimension B of the opening 40 is such that while the trim
piece rear or back side 68 along one longer rail of same will fit
through the opening 40 when an upper or lower marginal edge 43 or
45 of the opening 40 is seated against the surface 110 of the trim
piece rail groove 70 involved, but when the trim member 42 is centered
within the opening 40 the trim piece rear or back side 68 by virtue
of the ridges 66 and the movement limiting action of tab 74 and
76 is proportioned to preclude withdrawal of the trim piece from
the opening 40. However, trim piece ridges 66 are proportioned so
that when one longer rail of the trim piece 42 has a longer marginal
edge (43 or 45) of opening 40 seated in its slot or groove 70 the
ridge 66 of the trim piece other longer rail will clear the other
longer edge of the opening 40 as the trim piece is pressed rearwardly
of the plate member 30.
The channel member 82 is then applied to the rear side of plate
member 30 as by bringing the cover member edge portions 90 and
92 into substantial registry with the rear or back side 68 of the
trim piece, and inserting one of the edge portions 90 or 92 for
instance the edge portion 90 in one of the trim piece slots 70
(for instance, that of rail 54); so that its marginal edge 93 seats
against the slot bottom surface 110 with the edge portions tabs
98 and 100 disposed on either side of the trim piece 42 as indicated
in FIG. 10 (where step No. 1 of the cover member application to
the trim piece is shown applying the cover member flange portion
90 to the slot 70 of trim piece rail 54). This will leave the other
edge portion (in this instance, the edge portion 92) disposed adjacent
the trim piece rear or back side 68 along the trim piece bottom
rail 52.
The edge portion 92 of channel member 82 is then suitably moved
away from its opposing edge portion 90 sufficiently to have the
edge portion marginal edge 95 clear the trim piece rear side 68
along the rail 52 and then released (see steps Nos. 2 and 3 of FIG.
10), whereby the edge portion 92 will lodge itself within the recess
70 of the trim piece bottom rail 52 and in engagement with the bottom
surface 110 thereof, substantially as indicated in FIG. 2.
Step No. 2 of FIG. 10 may be effected by bringing edge portion
92 into flush engagement with the trim piece back side 68 and rapping
the channel member web portion 84 with a suitable hammer, at the
edge 92 side of same, with the trim piece front side disposed against
a firm surface, whereby the curved configuration of the trim piece
back side along rail 52 will cam edge portion 92 away from edge
portion 90 to permit edge portion 92 to seat within the slot 70
of rail 52 with snap fit action (that is provided by the resiliently
flexible material from which cover member 46 is made). Alternately,
step No. 2 of FIG. 10 may be effected utilizing suitable tooling,
such as hand tool 135 of FIGS. 11 and 12 operating through the
trim piece from the front side of same to deflect the cover member
side flange 88 sufficiently away from side flange 86 using the
trim piece rail 54 as a purchase, to permit edge portion margin
95 to be moved forwardly of the pull into alignment with the slot
70 of trim piece rail 52 whereupon the tooling is released to permit
the resiliency or "back spring" nature of the cover member
to seat the cover member edge portion margin 95 firmly with the
slot 70 of trim piece rail 52.
Of course, either cover member edge portion 90 or 92 may be initially
applied to a trim piece slot in the manner indicated for edge portion
90 and the other edge portion deflected in the manner indicated
for edge portion 92 to effect assembly of the pull components.
When this has been completed, the pull components are fully assembled,
without having to employ screw fasteners or bonding or the like.
The cover member edge portion tabs 98 100 102 and 104 are disposed
on either side of the trim piece 42 and their obtuse angulation
with respect to the cover member side flanges 86 and 88 introduces
a wedging action into the assembly whereby the trim piece flanging
62 is pulled tightly against the front surface 72 of the plate member
30. The said cover member tabs also preclude lateral movement of
the cover member relative to the trim piece, by engagement with
the trim piece.
In one embodiment of the invention, the plate member 30 is 22 gauge
sheet metal formed from a suitable steel while the channel member
82 is formed from similar materials and is of 24 gauge thickness.
The trim piece 42 may be formed from any suitable metallic or plastic
material, such as a suitable zinc alloy. As indicated, trim piece
slots 70 are to be proportioned to receive both the plate member
30 and the cover member edge portion margins 93 and 95 with a friction
fit. Thus, the width of the slots 70 should be substantially equal
to the sum of the thickness of the plate member 30 at its opening
margins 43 and 45 and the thickness of the respective cover member
flange portions 90 and 92.
Hand tool 135 comprises a pair of levers 140 and 142 suitably pivoted
together by pin 144 and each comprising a hand grip portion 146
and a tool head bearing portion 148. Tool bearing portion 148 of
lever 140 has fixed to same a tool head 150 of right angled configuration
including attachment flange 152 and working flange 154. Tool bearing
portion 148 of lever 142 has fixed to same a tool head 156 having
base portion 158 and notched portion 160. The tool heads 150 and
156 are elongate transversely of tool 135; head 150 has its flange
154 formed to define a rounded working edge 162 that is to engage
a cover member side flange 86 or 88 and head 156 is formed to define
a slot or notch 164 having a rectilinear base wall 166 which is
to engage against a trim piece rail 52 or 54. Suitable spring 165
biases the tool portions 148 together along their planar abutment
surfaces 168 to contact the tool so that it may be inserted through
the pull trim piece 42. Surfaces 168 thus form stops that define
the retracted position of tool 135.
Assuming that tool 135 is to be used to deflect cover side flange
88 away from side flange 86 as mentioned hereinbefore, the tool
heads 150 and 156 are disposed within the pull, as shown in FIG.
11 with the trim piece rail 54 seated in slot 164 of head 156 and
the tool heads roughly centered within the pull. Levers 140 and
142 are actuated to draw their portions 146 toward each other to
bring edge 162 of tool head 150 against the cover side flange 88
with sufficient force to separate cover edge portion margin 95 from
cover edge portion margin 93 as required to bring margin 95 into
alignment with the slot 70 of trim piece rail 52 as by rocking
the tool 135 somewhat, clockwise of FIG. 11 using the trim piece
rail 54 as a center, whereupon the tool 135 is released; spring
165 brings the tool heads together for ready withdrawal of same
from the pull.
FIG. 13 shows the invention in the form of embodiment 170 applied
to a desk drawer of the type shown in Harris et al. U.S. Pat. No.
3549301 wherein the drawer front comprises a front panel 171
that is primarily for aesthetic purposes and a liner 172 that is
the structural or load bearing member of the drawer front. In this
arrangement, in which the pull 170 of FIG. 13 replaces the pull
shown in said patent, the pull opening 40 is formed in panel 171
and the liner 172 has opening 174 formed therein through which cover
46A is passed for application to trim piece 42 in the same manner
as already described. Cover 46A is the same as cover 46 except that
it has fixed to its web portion 84 as by spot welding at 176 a
connecting plate 178 that is connected to liner 172 by suitable
screws 180 applied to the respective holes 182 and 184 formed in
the liner and plate 178 for this purpose. This arrangement thus
provides for secure connection of the cover member 46A to the drawer
front liner 172. Opening 174 is of sufficient size to readily accommodate
the assembly steps described hereinbefore.
It will therefore be seen that the invention provides a simple
but effective pull arrangement that avoids the use of any mechanical
fasteners or bonding procedures to secure the parts together. The
invention contemplates the proportioning of the parts such that
the trim piece by simple hand manipulation movements may be snap
fitted and loosely centered within the plate member opening, after
which the cover member is applied to the rear side of the plate
member by having its opposed edge portions friction fitted into
the same trim member grooves that receive the plate member marginal
edges that define the pull opening, the trim components together
are fixedly locked together. These components can be separated by
reversing the assembly procedure, with a tool such as tool 135 being
employed to deflect one of the cover member side flanges away from
the other (as for instance, side flange 88 being acted on by hand
tool 135) to unseat its edge portion margin from the trim piece
slot 70 to which it has been applied and swing such side flange
rearwardly of the trim piece, whereupon, when the tool is released,
the cover member may be readily separated by hand from the trim
piece. Separation of the trim piece from the plate member to which
it is applied is effected by reversing the assembly procedure.
Where the cover member end portions 130 and 132 remain planar with
the cover member web portion 84 separation of the cover member
from the trim piece may be effected by slipping a flat rigid bar
through the cover member (between it and the trim piece) and drawing
it sidewise against one or the other of the cover side flanges to
unseat one side flange from one of the trim piece slots 70. This
avoids the need for a hand tool similar to tool 135.
Where the embodiment of FIG. 13 is involved, disassembly of the
pull first requires removal of screws 180.
The foregoing description and the drawings are given merely to
explain and illustrate the invention and the invention is not to
be limited thereto, except insofar as the appended claims are so
limited, since those skilled in the art who have the disclosure
before them will be able to make modifications and variations therein
without departing from the scope of the invention. |