Hammers abstract
An arrangement is described for the selective disengagement of
the hammers in tripping mechanisms of shotguns with two barrels
coupled side by side or superimposed. The arrangement comprises
a connector mounted on the trigger and capable of pivoting lengthwise
as well as transversely with respect to the tripping mechanism.
The connector is provided with tripping teeth which interact with
the tripping levers of the hammers. There is also a rocking arm
attached to the connector and mounted on a selective push lever
which is slidably guided in a transverse direction on the lower
surface of the under guard member of the shotgun, so as to define
two positions of the rocking arm and of the connector. Two modes
are then possible in order to strike the firing pins by first utilizing
a first hammer and then the other, or vice versa.
Hammers claims
What is claimed is:
1. In a reversible hammer mill the improvement comprising:
a. a rotor assembly having discs each formed with radially projecting
arms angularly spaced apart at distances such that said arms are
substantially symmetrically spaced apart around the circumference
of said rotor discs and expose a portion of said discs between said
projecting arms;
b. a drive shaft supporting said rotor assembly;
c. hammer means for connection to each of said arms, each hammer
means having an elongated body formed with a central body pad area
and opposite end portions presenting oppositely facing substantially
flap landing face areas aligned in the direction of traveling during
rotation of said rotor discs, said opposite end portions of said
hammer means being in the same direction of travel thereby presenting
impact edges in the same direction of travel of the rotor assembly;
and
d. pivot means connecting each of said hammer means to a respective
arm such that each of said landing face areas is positioned to swing
about said pivot pin and impact by one of said flat landing face
areas on an exposed disc while supporting an impact edge spaced
from said exposed portion of each portion.
Hammers description
FIELD OF THE INVENTION
The present invention relates, in general, to tripping mechanisms
with two hammers and one trigger for shotguns with two barrels coupled
to each other either side by side or superimposed. More particularly,
the invention relates to an arrangement for the selective disengagement
of the hammers, the arrangement being attached to the tripping mechanism
so as to selectively disengage first one hammer and then the other,
or vice versa, and fire the projectile first in one barrel and then
in the other, in accordance with a reversible sequence.
BACKGROUND OF THE INVENTION
Already well known are various types of tripping mechanisms that
comprise two hammers hinged on an under guard member and respectively
coordinated with the firing pins of the barrels, two tripping rods
(hereafter simply referred to as rods) for arresting the hammers
in the cocked position, and a trigger that controls separately--through
an inertial mass or rocking arm--the movement first of one rod and
then of the other for the successive disengagement of the two hammers,
the trigger being connected to the rocking arm by means of a pivoting
connector mounted on the tail of the trigger and vertically movable
therewith.
Similar tripping mechanisms, also known as mono-trigger mechanisms,
may further comprise a firing selective device that permits the
selective disengagement first of the hammer related to one barrel
and then of the hammer related to the other barrel, or vice versa,
depending on the requirements of the user.
Among others, there is known for instance from Italian patent application
no. 5238-A/87 corresponding to U.S. Pat. No. 4805332 of the firm
of the present applicant, a selective device consisting of a sliding
selector mounted on and movable transversely on an intermediate
part of the pivoting connector of the mechanism, and interacting
with the rods of the hammers, the sliding selector being arrested
in each of the two positions by a spring-loaded piston.
Such an operation, however, calls for a sliding mount of the slide
selector on the connector and, even more disadvantageously, a direct
access to the mechanism, which involves the disassembly of the mechanism
itself from the rocking arm. The operation of the selective device
is, therefore, quite troublesome and not so practical.
SUMMARY AND OBJECTS OF THE INVENTION
The purpose of the present invention is to eliminate the above
mentioned disadvantage and inconvenience and to permit a quicker
and more practical operation of the selective mechanism directly
from the outside without removing the mechanism from the rocking
arm of the shotgun.
This result is achieved by providing a selective hammer disengagement
arrangement of the type here above described with disengaging teeth
as integral components of the pivoting connector and with a controlling
push lever transversely guided on the outer surface of the under
guard member and attached to the rocking arm in such a manner as
to be able to position the rocking arm in one of two positions to
which correspond two distinct modes of interaction of the disengaging
teeth with the rods of the hammers for the selected disengagement
first of the right hammer or of the left one.
The selective disengagement mechanism here proposed includes a
pair of hammers hinged to an under guard member and coordinated
with respect to firing pins corresponding to the two barrels of
the shotgun; a pair of tripping rods for arresting said hammers
in the cocked position; a trigger controlling separately, through
a rocking arm, the individual displacement of said tripping rods
for the successive disengagement of said hammers; a connector connecting
said trigger with said rocking arm, said connector being mounted
on and being vertically displaceable with the tail of said trigger;
said connector being pivotable lengthwise as well as transversely
of the tripping mechanism; at least a central tooth fixedly positioned
on said connector and laterally thereto a pair of catches opposed
to each other, said catches being positioned rearwardly with respect
to said central tooth; and, a guided selective push lever, carrying
mounted thereon said rocking arm, transversely slidable on the lower
surface of said under guard member, so as to define two positions
of said rocking arm and said connector and provide for two striking
modes of said hammers. is substantially in accordance with claim
1 hereto appended, and is equally applicable to tripping mechanisms
with fixed-position triggers and to mechanisms with variable-position
triggers.
The various features of novelty which characterize the invention
are pointed out with particularity in the claims annexed to and
forming a part of this disclosure. For a better understanding of
the invention, its operating advantages and specific objects attained
by its uses, reference is made to the accompanying drawings and
descriptive matter in which a preferred embodiment of the invention
is illustrated.
BRIEF DESCRIPTION OF THE DRAWINGS
In the drawings:
An example of practical realization of the arrangement of the present
invention will be hereinafter fully described with reference to
the accompanying illustrative, but not limitative drawings, in which:
FIG. 1 is a perspective view of the mechanism of the invention;
FIG. 2 is a top view of the mechanism, with the hammers' springs
previously removed and with the arrangement in a first operative
position;
FIG. 3 is another top view, analogous to that of FIG. 2 except
that the arrangement is in a second operative position;
FIG. 4 is a partial, sectional side view of the arrangement; and
FIG. 5 is a sectional detail of the arrangement, taken along arrows
V--V of FIG. 4.
DETAILED DESCRIPTION OF THE DRAWINGS
The tripping mechanism of the invention comprises two hammers 1
and 2 hinged on under guard member 3 by means of pin 4 and serving
to strike the firing pins corresponding to the two barrels of the
shotgun, mounted side by side or superimposed (not shown in the
accompanying drawings).
Hammer 1 is actuated upon, as it is known per se, by a tripping
spring 5 and it is hooked in the cocked position by means of rod
6 pivotably mounted on pin 7 and terminating rearwardly with beak
6a. Similarly, hammer 2 is acted upon by a tripping spring 8 and
it is hooked in the cocked position by means of rod 9 which is equally
pivotably mounted on the same pin 7 and terminating rearwardly with
beak 9a.
The displacement of hammers 1 and 2 in the cocked position is determined
by driving levers 10 controlled by the opening of the barrels. Conversely,
the disengagement of the hammers for the striking operation is controlled
by a single trigger 11 in accordance with a reversible sequence,
as more fully described hereinafter. On the tail of trigger 11
which tail may be either in a fixed position or in a variable position,
there is a pivoting connector 12 positioned back of rods 6 and
9 and movable vertically with the trigger. Connector 12 is provided
with two orthogonal, rotational axes, in such a manner that it be
able to oscillate or pivot on pin 12a (associated with the trigger)
in a direction transverse with respect to the tripping mechanism,
as well as on pin 12b (attached to pin 12a) in the lengthwise or
breadthwise direction of the mechanism. Connector 12 furthermore,
connects the trigger to an inertial mass or rocker arm 13 by means
of a small rod 12', which is an integral component of the connector
12 and engages a corresponding opening 13' provided in the rocker
arm 13. Connector 12 pivots on the transverse axis of pin 12b together
with the rocking arm. This latter, through a transverse pin 14a,
is hinged beneath to a sliding selective push lever 15 mounted and
guided in a transverse seat 3a provided in the outer surface of
the under guard member 3 behind the trigger 11.
The rocker arm 13 is actuated by a spring which keeps it normally
displaced toward the tripping rods 6 and 9 together with the connector
12. The sliding push lever 15 has the function of displacing transversely
into one of two positions the rocking arm 13 and, through the latter,
of causing the transversal pivoting of the connector 12 on pin 12a,
in accordance with the two modes of disengagement of the hammers
1 and 2. The two positions of the rocker arm 13 (and also of the
connector 12) are defined by an elastic arrestor consisting, for
instance, of a spring-peg combination 1718 mounted in the push
lever and engaging notches provided in the base of the guide seat
3a.
In order to selectively disengage hammer 1 or hammer 2 and be able
to fire projectiles first from one barrel and then from the other,
or vice versa, the connector 12 has integrally therewith, in its
intermediate section, a central tripping tooth 19 which cooperates,
alternately, with beak 6a of the rod 6 and with beak 9a of the rod
9 depending on the position of the connector itself. On opposite
sides of the central tooth 19 the connector has two tripping catches
20 and 21 rearwardly positioned with respect to the central tooth
19 and, therefore, farther distanced from the beaks 6a and 9a of
the rods 6 and 9.
Catch 20 cooperates with beak 6a of rod 6 when central tooth 19
is engaged with beak 9a of rod 9. Conversely, catch 21 cooperates
with beak 9a of rod 9 when the central tooth 19 is engaged with
beak 6a of rod 6.
Beneath the central tooth 19 there is provided a chamfer 22 against
which acts the rear end of either of the two rods 6 and 9 so as
to displace temporarily and rearwardly the connector 12 and, together
therewith, the rocker arm 13 during the cocking or arming of the
hammers. In practice, when the push lever 15 is moved fully to the
left (see FIG. 2), the connector 12 is also displaced to the left
(solid lines in FIG. 5), and its central tooth 19 is positioned
beneath and cooperates with beak 6a of rod 6 of hammer 1 without
interference with the beak of rod 9 of the other hammer 2. In this
condition, when the hammers are cocked, by acting a first time on
the trigger 11 the connector 12 is displaced upwardly, the central
tooth 19 acts on rod 6 hammer 1 is thus disengaged and the firing
of the projectile through the corresponding barrel occurs.
When the trigger is released, connector 12 is displaced downwardly
and, actuated by the rocker arm 13 (urged by spring 13a) moves forward
toward the rods 6 and 9 to a position wherein it can place the catch
21 beneath beak 9a of the other rod 9. In this way, by depressing
a second time the trigger 11 the rod 9 is displaced (through catch
21) and the other hammer 2 is disengaged.
When, on the other hand, the selective push lever 15 is moved to
the right, as shown in FIG. 3 the opposite effect is obtained,
that is, the tooth 19 is positioned beneath and cooperates with
the beak 9a of rod 9 of hammer 2 so as to disengage first the latter
following a first operation of the trigger 11. Subsequently, after
having released the trigger 11 the catch 20 of connector 12 engages
beak 6a of rod 6 so that when the trigger is again depressed, the
hammer 1 is disengaged.
It is therefore quite evident how the two firing modes may be selectively
utilized by simply and easily acting on the selective push lever
without need of accessing the interior of the mechanism.
While a specific embodiment of the invention has been shown an
described in detail to illustrate the application of the principles
of the invention, it will be understood that the invention may be
embodied otherwise without departing from such principles.
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