Improved Mechanism for Controlling the Action of the Cartridge Ejectors of Break-down Guns.
Year: 1892

page_text: Date of Application, 29th Aug., 1892
Complete Specification Left, 29th May, 1893-Accepted, 12th Aug., 1893
PROVISIONAL SPECIFICATION.
Improved Mechanism for Controlling the Action of the Cartridge
Ejectors of Break-down Guns.
I CHARLES SPARROW of 42 Cowley Road, Brixton, Gunmaker do hereby
declare the nature of this invention to be as follows:-
The object of this invention is to improve the efficiency of the mechanism by
which cartridge extractors are controlled, and ensure their acting only after the
firing of the cartridge.
In mechanism of this character, stop springs have been employed for engaging
with the extractor levers which drive out the exploded cartridges from the barrels,.
the use of such springs being to prevent the action of the extractor levers upon
unfired cartridges, when the gun is opened.
On the firing of the gun, a sliding rod has been thrust forward, and caused, by its
forward motion, to disengage the spring stop from the extractor lever, thus enabling
it, on the opening of the gun, to drive out the exploded cartridge.
I now propose to obtain the same result by means of a rock shaft furnished with
a finger at its forward end, which serves to put lateral pressure on the spring catch,.
and thrust it out of contact with the extractor lever.
One of
This rock shaft is mounted in the body of the action, and keyed to its rear end,
where it projects through the back of the action, is a pair of radial arms.
these arms underlies the "playside" of the cramped main spring, which, on the
firing of the gun, presses upon the arm, and rocks the shaft to which the arm is
keyed. This rocking of the shaft causes the finger which it carries to release the
extractor lever, by withdrawing the spring stop therefrom.
The other radial arm is designed to engage with the locking bolt of the gun,
when it is drawn back to allow the gun to be opened. A light spring is provided
for rocking the shaft in an opposite direction to the movement which it receives
from the main spring. When, therefore, the arm depressed by the main spring
is released, the light spring before mentioned will tip the arms of the rock shaft
into their normal position. To prevent this movement taking place during the
opening of the gun, and thereby allowing the spring catch to lock the cartridge
extractor before the exploded cartridge is discharged, the locking bolt moves back
into the plane of motion of the vertical radius arm, and retains the rock shaft, and
its finger, in the acting position.
On the closing of the gun, the locking bolt will snap into its locking position,"
and release the vertical radius arm, which, by reason of its light spring, will rock.
back the shaft, release the spring stop, and permit it to re-engage with the
extractor lever.
I may remark that the rock-shaft action is equally applicable for removing a
spring or stop actuated by a spring used for blocking the ejector main-spring, when
the gun has not been fired.
Dated this 20th day of Ano 1902
NEWTON & SON,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
Improved Mechanism for Controlling the Action of the Cartridge
Ejectors of Break-down Guns.
I CHARLES SPARROW of 42 Cowley Road, Brixton, Gunmaker, do hereby
declare the nature of this invention and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement:-
The object of this invention is to improve, the.jefficiency of the mechanism by
which cartridge ejectors are controlled, and ensure their acting only after the
firing of the cartridge.
In mechanism of this character, stop springs in connection with disengaging
sliding rods have been employed for engaging with the ejector levers which drive
out the exploded cartridges from the barrels, the use of such springs being to
prevent the action of the ejector levers upon unfired cartridges, when the gun is
opened.
On the firing of the gun, the disengaging sliding, rod of the discharged barrel
was thrust forward, and caused, by its forward motion, to disengage the spring stop
from the ejector lever of that barrel, thus enabling it, on the opening of the gun, to.
drive out the exploded cartridge.
In constructing break-down guns, which are usually of the double barrel type, I
propose to obtain the above mentioned result by providing, for each barrel, a rock
shaft furnished with a finger at its forward end, which serves to put lateral pressure
on the spring catch, and thrust it out of contact with the extractor cam lever,
leaving that lever free to act and drive out the exploded cartridge.
In the accompanying drawing,
Fig. 1 is a partial side view of a break-down gun fitted with my improved ejector
mechanism, the interior of the lock being exposed to view.
Fig. 2 is an inverted plan of the same.
"Fig. 3 is a front view of the "action," the barrels being removed.
Fig. 4 is a section taken in the line 1.2 of Fig. 1, and viewed from the rear; and
Figs. 5 shew the rock shaft, and spring stop or catch on which it acts, detached
from the gun.
•
A is the action, B' the barrels hinged thereto in the usual way; CC are the cam
levers for ejecting, the cartridges, D the locking or spring stops, and E the rock
shafts for releasing the spring stops D from their cam levers.
The rock shafts E are mounted in the body of the action, and keyed to the rear
end of each shaft, projecting through the back of the action, is a pair of radial
arms 1. 2.
The .arm
1 underlies the "playside" of the cramped main-spring F, which,
released on the firing of the, gun, presses upon the arm, and rocks the shaft E on
which the arms are keyed.
This rocking of the shaft causes the finger 3 which it carries on its forward end,
and which underlies the locking spring D (see Figs. 5), to release the ejector lever,
by withdrawing the spring stop therefrom.
The cam lever will then, on the opening of the gun, be brought into position to
receive the impulse of its mainspring G, and thereby to drive out the exploded
cartridge.
The radial arm 2 is designed to engage with the locking bolt H of the gun, when
it is drawn back to allow the gun to be opened. A light spring 4 is provided for
rocking the shaft in an opposite direction to the movement which it receives from
the main spring F. When, therefore, the arm 1, depressed by the mainspring, is
released, the light spring 4 will tip the arms 1. 2 of the rock shaft into their
normal position, as shown at Fig. 4. To prevent this movement taking place
during the opening of the gun, and thereby allowing the spring catch D to lock

page_text: the cartridge ejector before the exploded cartridge is ejected, the locking bolt H
moves back into the plane of motion of the vertical radius arm 2, and retains the
rock shaft and its finger 3 in the acting position.
On the closing of the gun, the locking bolt will snap into its locking position,
thereby releasing the radius arm 2. Then, by reason of the light spring 4, the
shaft E will be rocked back, thereby taking the pressure of the finger 3 off the
spring stop D, and allowing that spring stop to re-engage with the ejector lever.
may remark that the rock shaft action is equally applicable in cases where a
a spring stop, or a stop actuated by a spring, is used for blocking the ejector main
spring, when the gun has not been fired, in place of locking the ejector lever, as
above described.
The finger on the rock shaft will, in this instance, thrust the spring stop clear of
the ejector main-spring, and allow it to act upon the ejector lever or hammer on
the opening of the gun.
By the closing of the gun, the ejector lever will be tipped back, and effect the
the depression of its main-spring, leaving the spring stop to fly back and again
block the mainspring.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare that what I
claim is
The means described with reference to the drawing, for automatically releasing
the spring stop or catch of cartridge ejectors, for the purpose above set forth.
Dated this 24th day of May 1893.
NEWTON & SON,
Agents for the Applicant.