Year: 1893

page_text: Date of Application, 28th Mar., 1893
Complete Specification Left, 28th Dec., 1893-Accepted, 17th Feb., 1894
A communication from PAUL BRUN-LATRIGE, of 7, Cours Fauriel, Saint-Etienne,
in the Republic of France, Armourer.
I, ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent, do hereby declare the nature of this invention to be as
follows:-
In a gun constructed according to this invention the barrels are stationary and
the breech-block is arranged to slide upon the false breech by means of two grooves
provided on each side of it in the breech, one of them being strictly speaking a
rib, while the other is formed by a grooved portion of the breech. The breech
carries the intermediate triggers which whenever the gun is fired are retained in
either direction by a spring which prevents their descent, and by another spring
which prevents their projecting beyond the breech-plate when the trigger proper is
not pressed. The breech also carries a stop whereby the backward movements of
the breech-block are limited.
A recess of suitable shape is formed in the top surface of the false breech to
receive the heel of the breech-locking key. This recess serves to connect the
breech-block with the false breech and to prevent any backward movement or
recoil of the block when the gun is fired. Another recess is provided in the false
breech to receive the hook of the barrel. In the breech-plate there are two small
apertures for the points of the intermediate triggers to pass through.
Within the breech-block are located the firing-pins each surrounded by a spiral
spring, the tumblers, tumbler-springs and somewhat further in the rear the breech-
locking key hereinafter more particularly described. There are besides at the
front projections screwed or otherwise secured on the breech block, which fit into
the back ends of the barrels, provided with an inner screw-thread for the purpose.
This projection serves to render the connection of the breech-block with the barrels
more perfect and to counteract the tendency of the block to rise under the pressure
of the expanding gas when the gun is fired. The block is further provided with
two extractors formed with a hooked spring.
The key consists of a long cylindrical rod with a spring enclosed in it. It
terminates at the back in a handle provided with a projection of segmental shape.
When the key is closed this projection or beel enters the before-mentioned recess
in the false breech and thereby prevents the breech-block from receding. A
groove serves to retain the key upon the breech-block through the medium of a
screw. On the front end of the key are arranged two helical or inclined cams or
grooves which serve for cocking the firing-pins. Each of these is for the purpose
provided with a lug engaging in a groove or recess provided for the purpose in the
breech-block whereby the firing-pins are effectively prevented from turning about
their axes, although they may freely shift longitudinally. The point or end of
cach of these lugs enters a recess formed in the metal in cutting the helical grooves.
It will readily be understood that when the key is opened, the firing-pins being
guided by their lugs and prevented from turning on their axes must of necessity
when the key is turned move along the helical inclines and back to the "cocked
position in which they compress the spiral springs surrounding them.
At the extreme front end of the key is provided the hook by which the
connection or engagement with the false breech or barrels is arranged.
The operation of the improved.fire-arm will be readily understood. By pressing

page_text: the trigger, the intermediate trigger is caused to rise and to release both the
tumbler and the firing-pins from the "cocked" position whereupon the latter are
forced forward under the action of their springs.
10th of March 1902
W. P. THOMPSON & BOULT,
Of London, Liverpool, Manchester and Nottingham,
Agents for the Applicant.
A communication from PAUL BRUN-EATRIGE, of 7, Cours Fauriel, St. Etienne,
France, Armourer.
I ALFRED JULIUS BOULT of 323 High Holborn in the County of Middlesex,
Chartered Patent Agent 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 :-
This invention will be best understood by reference to the accompanying drawings
in which
Figure 1 is a side elevation of the complete breech arrangement, the breech
block A itself being drawn back.
Figure 2 is a plan of the shoe or false breech carrying barrels of the gun.
Figure 3 illustrates the relative positions of the firing pins F, sear or tumbler h,
sear or tumbler-spring i, trigger e, intermediate pin b, and spring d. The respective
positions of these parts upon, and in relation to, the breech and breech-block are
moreover illustrated in Figure 1.
Figure 4 represents the cocking key G which is also adapted to engage with the
barrels (as illustrated in Figure 7) and assists in locking the breech-block A upon
the false breech, as hereinafter more fully explained. In this figure is also shown
the relative position of the firing-pins F to the key G when the gun is ready for
firing and the cams m n provided to facilitate cocking.
Figure 5 is a detail view of the handle of the key G and it also shows the heel 9
whereby the block A is locked on the false breech."
Figure 6 is another view of the key-handle.
Figure 7 illustrates the manner in which the key G engages with the barrel, when
the gun is closed, and ready for firing.
Figure 8 is a similar view to Figure 7 except that the key has been moved a
quarter of a revolution, so that it is disengaged from the barrel.
In a gun constructed according to this invention the barrels are stationary and
the breech-block A is arranged to slide upon the false breech by means of grooves
and ribs a a provided on the sides of the breech and said breech block. The breech
carries the intermediate pins (Figures 1, 2 and 3) which whenever the gun is fired
are retained in the position to which they are moved by a spring c which prevents
their descent, and which are acted on by another spring d which prevents their
projecting beyond the upper surface of the false breech when the trigger proper e
is not pressed. The breech also carries a stop f whereby the backward movement
of the breech-block A. is limited.
In Figure 2 is shown a recess B of suitable shape formed in the top surface of the
false breech to receive the heel g of the cocking and breech-locking key G. This
recess serves for locking the breech-block to the false breech and for preventing
any backward movement or recoil of the block when the gun is fired. Another
recess is provided in the false breech at D to receive the hook E of the barrels
(Figures 1, 2, 7 and 8). In the false breech there are two small apertures for the
points of the intermediate pius 6 to pass through.

page_text: Within the breech-block are located the firing pins F each surrounded by a
spiral spring the sears h, sear-springs i (Figures 1 and 3) and somewhat further in
the rear the cocking and breech locking key G hereinafter more particularly
described. There are besides, at the front of the breech block cylindrical
projections H screwed or otherwise secured on the breech block, which fit into the
back ends H¹ of the barrels which are provided with suitably shaped recesses for
the purpose. This projection H serves to render the connection of the breech-block
with the barrels more perfect and to counteract the teudency of the block to rise
under the pressure of the expanding gas when the gun is fired. The block may be
further provided with two extractors j.
The key G in its closed position together with the firing pins in the position they
occupy when the gun is ready for firing are shown in Figure 4. The key consists
of a cylindrical rod with a spring K fitted in it. It terminates at the back in a
handle provided with a projection of segmental shape (Figures 1, 5, and 6).
When the key is in its locking position as shown in Figure 4, this projection or
heel I enters the recess B (Figures 1 and 2) and thereby prevents the breech-
block A from receding. A groove / and a screw engaging therewith serve to retain
the key upon the breech-block. On the front end of the key are arranged two
helical or inclined cams or grooves m n which serve for cocking the firing-pins F.
Each of these is for the purpose provided with a lug o engaging in a groove or
recess provided for the purpose in the breech block whereby the firing pins are
effectively prevented from turning about their axes, although they may freely shift
longitudinally. The point or end of each of these lugs enters a recess formed in the
metal in cutting the helical grooves. It will readily be understood that when the
key is turned to its unlocking position, the firing-pins being guided by their lugs
and prevented from turning on their axes must of necessity, when the key is turned
move along the helical inclines and back to the "cocked position in which they
compress the spiral springs surrounding them.
"
The firing pins are so arranged that when cocked their ends come into view thus
affording visible evidence of their being cocked.
The manner in which the key is hooked on to or engages with the barrel is
illustrated in Figures 4, 7 and 8 from which it will be seen that at the extreme front
end of the key is provided the hook p by which the connection or engagement with
the false breech or barrels is arranged. Figure 4 shows the key in the engaged or
locking position. Figure 7 is a side view showing the manner in which the
hooking" is effected when the key is in the locking position, and Figure 8 shows
the position which the key assumes in relation to the hook E when such hook is
turned a quarter of a revolution for the purpose of opening the breech.
66
The operation of the improved fire-arm will be readily understood. By pressing
the trigger the intermediate pin is caused to rise and release both the sear h and
the firing pins from the "cocked" position whereupon the latter are forced forward
under the action of their springs.
Having now particularly described and ascertained the nature of the said inven-
tion as communicated to me by my foreign correspondent and in what manner the
same is to be performed, I declare that what I claim is :-
1. In a sporting gun the combination with a breech locking key such as G of
cams such as m for cocking the firing pins a projection or heel such as g for
connecting the breech block A to the false breech and a hook such as p for con-
necting the breech block to the barrel substantially as described and illustrated in
the accompanying drawings.
2. In a sporting gun the combination with a breech locking key such as G of one
or more cams such as m substantially as and for the purpose described and illustrated
in the accompanying drawings.
3. In a sporting gun the combination with a breech locking key such as G of a
projection or heel such as 9 and hook such as p substantially as and for the purpose
described and illustrated in the accompanying drawings.

page_text: 4. In a sporting gun the combination with a breech block such as A having one
or more projections such as H for engaging with one or more recesses in the barrel
of a breech locking key having a projection or heel such as g for engaging with a
recess in the false breech substantially as described and illustrated in the
accompanying drawings.
5. In a sporting gun the arrangement of the shoulder of the trigger which allows
the false breech to be of one piece with the barrel.
6. A firing pin so arranged that when cocked its end comes into view thus
affording visible evidence of the gun being cocked.
7. The combination and arrangement of parts constituting the complete sporting
gun mechanism substantially as described and illustrated in the accompanying
drawings.
Dated this 28th day of December 1893.
W. P. THOMPSON & BOULT,
Agents for the Applicant.