Improvements in Rapid Fire Guns.
Year: 1899

page_text: Date of Application, 5th May, 1899-Accepted, 7th Oct., 1899
Improvements in Rapid Fire Guns.
A communication from abroad by THE DRIGGS-SEABURY GUN & AMMUNITION
COMPANY, of New Jersey, whose principal place of business is 120, Liberty
Street, New York, United States of America.
I, PHILIP MIDDLETON JUSTICE, of 55 and 56, Chancery Lane, in the County of
Middlesex, Fellow of the Chartered Institute of Patent Agents, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention relates to improvements in rapid-fire guns of the type known as
semi-automatic, or that in which the breech is opened and closed by energy
stored up in a spring or during the recoil of the gun, but exerted during or after
the counter recoil. The said invention consists principally in providing im-
proved mechanism for operating the breech-block and extractor and also in pro-
viding mechanism for independently operating the breech-block and extractor
by hand, if desired, and also in other novel details of construction and combina-
tions and arrangements of parts that will be hereinafter more particularly
described and claimed.
Reference is had to the accompanying drawings in which the same parts are
indicated by the same letters throughout the several views.
Figure 1 represents a side elevation of the rear portion of the gun from the
trunnions to the breech, the mount being shewn in section and parts being
broken away.
Figure 2 represents a plan view of the structure shewn in Fig. 1:
Figure 3 represents a side elevation of the opposite side of the breech of the
gun from that shewn in Fig. 1, parts being broken away.
Figure 4 represents a central vertical section through the recoil cylinder and
contiguous parts of the gun and mount.
Figure 5 represents a side elevation partly in section of the forward end of the
sighting arm, parts being broken away, and illustrates the manner of connecting
the sighting arm to the gun, and shews details of the firing mechanism.
Figure 6 represents a detail view, partly in section along the line 4-6 of
Fig. 7, of the rocking slide and other parts of the gun mount, the gun itself being
removed and parts being broken away.
Figure 7 represents a double section, the right half of said figure being along
the line 77, and the left side of the figure being along the line 71-71 of
Fig. 6, in both instances looking in the direction of the arrows.
Figure 8 represents a detail view along the line 8-8 of Fig. 7, but shewing
a modified form of the balancing supports for the trunnions of the rocking
slide.
Figure 9 represents a section through the breech of the gun along the broken
line 9-9 of Fig. 10 and looking in the direction of the arrows.
Figure 10 represents a rear view of the breech of the gun partly in section
along the broken line 10-10 of Fig. 9.
Fig. 11 represents a section along the line 9-11 of Fig. 10, and looking to
the left in the said figure, the breech block, however, being shewn in the open
position.

page_text: Figure 12 represents a similar view to that shewn in Fig. 11, except that the
breech block is removed from the gun, and illustrates the location and operation
of the extractors.
Figure 13. represents a front view of the firing pin, shewing section through
the adjacent parts of the breech block along the line 13-13 of Fig. 11.
Figure 14 is a perspective view of the firing shaft as detached from the gun:
Figure 15 represents a perspective view of the breech block as detached from
the gun.
Figure 10 represents a perspective view of the breech operating shaft and the
arms carried thereby.
Figure 17 represents a rear view of one of the extractors detached from
the gun.
Figure 18 represents a side elevation of one of the extractors as engaging a
cartridge case.
Figure 19 represents a plan view of one of the extractors.
Figure 20 represents a section on the line 20 of Fig. 9, and illustrates the
action of the cam for automatically opening the breech block on counter recoil.
Figure 21 is a perspective view of the pivoted cam for automatically opening
the breech block on counter recoil.
Figure 22 is a section on the line 22-22 of Fig. 10 looking to the left.
Figure 23 represents a section on the line 23-23 of Figs. 9 and 10, and
looking down.
Figure 24 is a plan view of part of the sighting arm, and illustrates details
of the firing mechanism; and
Figure 25 is a perspective view of the trigger and parts contiguous thereto
as detached from the gun.
A represents the body of the gun, which is screwed or otherwise secured into
the band B provided with dove-tail guides 6 and with the U-shaped downwardly
projecting portion B. These guides slide in guide-ways c in the rocking
slide C, which rocking slide is provided with trunnions C¹ supported on the
yoke F of the mount F, and enclosed by the usual cap squares D.
In order to lessen the friction of the rocking slide on its trunnions, and also
throw the centre of suspension of the rocking slide at about the axis of the
trunnions instead of the base thereof, the trunnions are recessed as at c¹ see
Figs. 3, 7 and 8, and the weight of the rocking slide, gun, and connected parts
is suspended on the supporting pins E, as shewn in Figs. 3 and 7, or E¹ as shewn
in Fig: S.
These supporting pins may be screwed in and locked by the set screws ea, as
shewn in Figs. 3 and 7, the yoke I" being slotted as at f¹, and the pin E being
provided with holes e¹ for capstan bars, whereby the pin E may be adjusted for
wear either on the pin or on the trunnions, and the weight of the gun, or a large
portion thereof, may be supported on these pins; or instead of this mode of
adjustment, the mode of adjustment shewn in Fig. 8 may be adopted, where the
pin E is recessed at e³ to receive the spindle e, passing through the cup-
springs e
These springs should be so adjusted as to take the entire weight or nearly the
entire weight of the gun, and thus relieve the pressure on the base of the
trunnions.
By arranging the spindle and cup-springs as shewn in Fig. 8, the pin E may
be removed and the spindle with the cup-springs may be withdrawn from its
recess for cleaning, repair, or other purposes, the gun and rocking slide being,
of course, first lifted from the mount. By this arrangement of central support
for the trunnions, the gun is supported on a line at right-angles to and inter-
secting to the axis of the bore, and thus the tendency of the gun or rocking
slide to roll back on its trunnion seat and produce the error known as "jump,"
is in a large measure, if not wholly avoided.
It will be seen that the pins E or E¹, which should be made of resilient

page_text: material, preferably of chilled steel, will spring back when the gun is fired,
causing the shock of recoil to be taken on the rear portion of the trunnion seat,
as is ordinarily the case.
By having the lower side of the trunnions provided with a recess c¹, as shewn
in Figs. 3, 7 and 8, the liability of dust, dirt, grease, snow, or other foreign
matter to accumulate in the recess or about the trunnion support, is obviated.
The rocking slide C projects to the rear, as shewn at C, and has detachably
secured thereto the sighting arm C³ carrying the shoulderpiece C and the hand-
grip C, used for steadying the gun on the target. The front end of the rocking
slide is provided with a U-shaped downward projection C closed in front, and
perforated at 5, with the socket c¹ in front of the perforation co³.
In through this perforation the piston rod H of the recoil cylinder G passes,
which piston rod is held in place by a nut H' having a spherical base h¹ engaging
in the socket c and thus allowing sufficient freedom of motion of the piston
rod H about its front bearing.
This piston rod H is preferably reduced at its rear end, and is provided with
screw threads h², (see Fig. 4) over which screws the piston H2, which piston is
normally held between the cylinder head G2 and the spring I. Both ends of the
recoil cylinder are provided with suitable stuffing boxes G¹, and the interior of
the recoil cylinder is provided with a tapered groove go to allow the passage of
the fluid from one side of the piston to the other as the gun recoils.
The spring I should be normally under tension, and strong enough to return
the gun to the initial position on counter recoil. The forward end of the recoil
cylinder is preferably tapered as at gl and to pass freely into the U-shaped
projection C should the parts be out of alignment somewhat, while the rear
portion of the cylinder G is provided with a spherical rib g engaging in the corre
sponding annular recess 62 at the rear end of the U-shaped projection B¹ fast
to the band B, whereby the piston is held and centered in position, while at the
same time sufficient freedom of motion of the cylinder about the front bearing
of the piston rod is provided for.
By this construction of the recoil cylinder and connections between it, and
the rocking slide and gun mount, any accident due to the parts being out of
alignment is avoided.
The downward projection B₁ is provided with a lug or pin 60 to which the
spring L is secured under tensión by means of which spring the breech is closed
automatically after counter recoil, as will be hereinafter more fully described.
This spring L is connected by means of the turn-buckle L' to the lug or pin
on the hand lever N secured to the rock-shaft M, by means of which the breech
mechanism is operated. By means of thus turnbuckle L', the tension of the
spring L may be adjusted as required, which tension should be sufficient to
always close the breech, after it has been opened but at the same time not exces-
sive enough to prevent the casy opening of the breech by the hand-lever N when
desired, this hand-lever acting against the tension of said spring.
The opening of the breech is normally effected automatically by the mechanism
that will hereinafter be described, but it is frequently desirable, especially in
drilling, to open the breech by hand, and with the hereindescribed mechanism
this also may be done when desired.
K represents the breech-block, which slides in its chamber in rear of the powder
chamber of the gun. This breech-block chamber in rear of the gun, is provided
with the ribs a one on each side inclined at the rear as at a² in front of the
-rounded shoulder a, which rib and shoulder are set at a small angle, preferably
about three degrees with a line at right-angles to the axis of the bore, so as to
wedge the breech block home when it is raised to the closed position.
The sides of the breech block are provided with the straight ribs k and k³,
with the surfaces k¹ and adapted to register with those of the rib a¹ and in-
cline a, while the rear face of the block is rounded at its outer edges to register
with the rounded shoulder a. The top of the breech block is recessed as at 4°,

page_text: which recess,slopes forwards and downwards as at 00, so that it will receive the
projectile or cartridge case, and the rim of the latter will be wedged down this
incline during the first stages of raising the breech block, after the fixed
ammunition has been put in the gun.
The rear of the gun terminates in the U-shaped rib A2 rounded outwards and
downwards, so as to admit the free passage of the projectile into the bore from
the rear, when the breech block is in the open position, as shewn in Fig. 11.
The front portion of the breech block is provided with the T-shaped central
chamber K, the wider upper portion of which is partly shut in by the ribs k,
against which the cam faces m¹ of the cam head M2 of the operating arm M¹
engage. The operating arm is rigidly attached to the rock-shaft M. The upper
side of the head M2 is rounded as at m² and engages the upper wall of the
chamber K, thus the surfaces m² cam the breech block upwards into the closed
position, while the cam surfaces m¹ cam the breech block downwards toward the
open position. The forward portion of the cam face 5 is concentric with the
axis of the rock-shaft M, allowing extra movement of the cam head M³ after the
block is in the highest position, to lock the same.
By reference to Fig. 11 it will be seen that the arm M¹ will act on the breech
block as a short lever arm when beginning to raise the block, thus starting the
block slowly with great power, and that the lever arm increases with corre-
sponding increase of speed until the block is in nearly the highest position; the
final act of wedging the block into the tightly closed position being effected by
the powerful camming effect of the cam M on the cam surface k³, as shewn in
Fig. 9; while in opening the breech block the slow but powerful starting effect
is secured by the cam surfaces, and then the block is moved rapidly downward
by the lever arm supplemented by the weight of the block and the parts moving
therewith, until the block is arrested by striking the upper surface of the arm M¹
near its pivot, as shewn in Fig. 11, when the said arm reaches the lower limit
of its travel. The position of the rock shaft M normally below and in front of
the breech block, together with the advantages of operation just described,
makes it possible to use a short and light operating arm on which the block is
supported from beneath, instead of the long heavy arm and binding support most
common in the art. Moreover, great ease and convenience of manipulation are
secured and the parts referred to are placed in a position clear of the loading
apparatus, and of the rim of the cartridge case, and protected against the enemy's
projectiles, and also against sand, dirt rain, etc.
The breech block is provided with a recess for the firing pin, terminating in
the pin-hole, through which the point of the firing pin is projected when the
gun is fired.
The extractors R consist of the vertical plates R¹ bent at right angles at R³
and terminating in the engaging rib R³, which are curved as at r to engage in
front of the rim of the cartridge case Z, while the backs of these ribs R³ are
rounded somewhat as at r to form a pivot for the extractor during the operation
of starting the cartridge case to the rear after the gun has been fired. The
lower portion of the extractor is provided with two oppositely disposed lugs R
and R, which project into the curved recess A' in the wall of the breech block
chamber and the groove K5 in the side of the breech block, respectively. The
lug R5 is flattened as at r on the side opposite to the rib R, to lock the breech
block in the open position, as will be hereinafter described.
The lug R travels in the cam groove K in the side of the breech block, which
'cam groove has the operating portion adapted to move the lug R5 of the ex-
tractor forward as the breech is opened, and rearward as the breech is closed,
and also the large portion open to the front, which permits the breech block
to be withdrawn from its seat without being impeded by the lugs of the
extractors.
Near the upper end of this cam portion
this groove terminates in the flat shoulder
of the groove K³, the lower wall of
adapted to engage beneath the flat

page_text: surface of the lug R³ when the extractor is in the rearward position and the
breech block is in the open position. Thus as the breech block is moved down
by the rotation of the rock-shaft M, the lug R of the extractor is cammed for-
ward in the groove K³ of the breech block, while the lug R moves forward in
the groove A in the wall of the breech block chamber. When the breech
block reaches the lower or open position as indicated in Fig. 11, the lug R will
have passed out of the groove k into the recess, and the plane face will le
above and will engage the shoulder 18, thus preventing the breech block from
moving upwards until the extractor has been moved forwards far enough to
release the engagement of the plane surface 4 and the shoulder 1³.
The loading of the gun will automatically trip the extractor out of engage-
ment with the shoulders, because as the cartridge case is shoved home the rim
of the cartridge case will engage the rib 13, and will push the extractor forward
from the position shewn in full lines in Fig. 12, toward that shewn in dotted
lines in said figure, and the breech block will then be free to be moved upwards
in the closed position, either by hand or by the automatic attachment that will
herein be described.
It will be obvious that the breech may be opened and closed and the extractors
operated by means of the hand lever N; but the breech is preferably opened by
means of the automatic attachment that will now be described, and closed by
means of the spring L.
The automatic breech opening mechanism includes two perforated arms Ca
attached to or integral with the rearward projecting arm C of the rocking slide,
between which arms C the cam plate Q is pivoted as at 7°. This cam plate is
normally pressed inwards by the spring Q, engaging in a recess in the web c
spanning the upper portion of the arms C. The inward travel of the pivoted
cam plate is limited by the lug 4, which engages beneath the lower face of the
web e', while this lug terminates in two arms between which the bell-crank
lever Qis pivoted, having the short arm q adapted to engage the lugs and
thus by a motion of this bell-crank lever from the position shewn in full lines to
that shewn in dotted lines in Fig. 20, the cam-plate may be swung backwards
from the engaging position to the position in which it will be out of engagement
with the operating mechanism, when all the parts engaged in opening the breech
may be operated entirely by hand. Thus the automatic breech opening
mechanism may be thrown into and out of engagement as desired.
The cam-plate Q is provided with a cam Q, and certain inclined faces to q
which will be hereinafter more fully described.
The rock-shaft M has an arm P provided with a lug p, which lug engages the
cam Q and opens the breech automatically on counter recoil.
q
This operation is as follows:-The lug is normally either in front of or in
engagement with the inclined face 7 of the cam-plate Q. As the gun is fired and
recoils, this lug p moves to the rear with the gun, sliding up the inclined face;
and wedging the cam-plate Q outwards against the action of the spring Q. As
soon as the lug ? passes beyond the end 21 of the inclined face q, the cam
plate Q springs inward again to the normal position shewn in full lines in
Fig. 20, and as the gun moves forward on counter recoil due to the energy stored
up in the spring I, the lug 2 moves down the curved face q2 of the cam Q¹,
causing the arm P to revolve the rock-shaft M far enough to open the breech
block. When the lug 2 has reached the lower part 3 of the cam Q', the breech
block is in the open position, and the lug p moves out of engagement with the
cam and would slide upwards and press the cam surface 95 until it jumps over
the shoulder q along the rear face q', were it not for the fact that the extractor
locks the breech block in the open position. As soon as the extractor is pressed
forward far enough to release the breech block, which may be done either by
hand or automatically by the insertion of a new cartridge case, as in loading the
gun, the breech block is released and the spring L acting on the lever arm N
rotates the rock shaft M, moving the breech block up to the closed position, at

page_text: the same time the lug 2 returns to the initial position relative to the cam
face q.
Thus it will be seen that when the gun is fired it recoils and the breech block
is opened on counter recoil and locked in the open position until the gun is re-
loaded, or until the breech block is purposely released, when the breech is auto-
matically closed. Moreover, it will be obvious that the operation of the cam Q'
takes place wholly on counter recoil, and that this operation is not affected by
the distance through which the gun recoils, provided the recoil be sufficient to
carry the lug ? from one side of the cam Qto the other side thereof. It will
also be evident that the automatic arrangement does not interfere with the
operation of the breech mechanism by hand if desired. In order to provide
adequate rigidity to the rear end of the arm C2 near the cam plate Q, and also
to still further prevent the error known as "jump," the breech of the gun may be
provided with dove tail guides a² sliding in guide-ways in the arm C² of the
rocking slide, as shewn in Fig. 10. Thus the object of the additional gear bear-
ing is principally to increase the grip of the bearing surfaces that prevent jump.
The short sliding connection between the sleeve B and rocking slide C obviously
permits more freedom of motion in a vertical plane than in this construction,
where the guide is practically made four times as long; therefore, with the same
necessary clearance between sliding surfaces, there should be only about one-
fourth as much jump possible. Thus the error due to wear, to yielding of the
parts on recoil, or to lack of trueness in the sliding contact between the gun
and the rocking slide, is reduced by increasing the distance apart of the bearing
surfaces between the gun and the rocking slide.
In order to provide for the ready removal of the breech block from the gun for
any purpose, the rock-shaft M is journalled in the hook A projecting beneath
the breech of the gun, which hook is provided with the lips a projecting
laterally therefrom. These lips a engage beneath corresponding lugs no and 2"
projecting inward from the end plate n' and the lower side of the arm P, as
shewn in Fig. 16, which lugs nº and 2º pass out of engagement with the lower
face of the lips a when the breech block is raised slightly beyond the closed
position, but engage the said lips a when the breech block is fully or partly
closed, and thus if the breech block is closed and raised slightly beyond the
closed position, these lugs nº and 2º may be swung clear of the lips a, the rock
shaft may be lifted out of the hooks A', and then the breech block, rock shaft, etc.,
may be thrown out of engagement with the gun and removed, and a fresh breech
block, rock shaft, etc., inserted, or substitution may be made, as may be desired.
It will be seen that the means for operating the breech block, whether auto-
matically or by hand, for locking the breech block in the open position, for
operating the extractors, and in general, the means for operating the breech-
mechanism, which have herein been described, are in no sense limited to any
specific form of firing mechanism, and it is proposed to apply any suitable or
desired form of firing mechanism to the invention already described.
There is shewn, however, a preferred form of firing mechanism, in which T
represents a sliding trigger plate mounted in guides beneath the rib c¹0 of the
sighting arm C³, and terminating in a trigger t, which trigger may be provided
with a suitable guard, not shewn, if desired.
This sliding trigger plate T is provided near its forward end with a recess
terminating in the lug t¹, in which recess and the recess c¹³ of the rib c¹0, the
spring T is mounted. This spring normally presses forward the plate T,
which plate is provided with a lug to adapted to engage the arm V1 on the shaft V,
as shewn in Fig. 25.
The firing mechanism is operated from the shaft V in a manner that will
hereinafter be described. The sliding plate T has secured thereto a resilient
plate T terminating on a hook 3, which hook normally engages the lug c¹2
(see Figs. 5, 22 and 24), secured to or integral with the arm C².
When the lug p is raised to the highest position, which takes place only when

page_text: .
the breech block is closed and locked, the last part of its travel during the time
the cam M³ moves along the face 05, will cause it to press up beneath this
resilient plate T until the hook 2 is released from engagement with the lug c¹³,
and thus the plate Tª may be drawn to the rear only when the breech is in the
closed and locked position, thus affording an automatic means for preventing the
gun from being fired by the firing mechanism when the breech block is in any
but the fully closed and locked position.
The shaft is pivoted in a chamber aº across the breech of the gun, and is
provided with the cocking and firing toe V. This toe when inserted or removed,
slides in a suitable groove aº1 (see Fig. 12) in the breech of the gun, which groove
at its central portion is widened to allow the toe V2 to rotate through the desired
angle:
One end of the shaft V is enclosed by the coil-spring V³; the ends of which spring
engage in the recess in the arm and in a suitable recess in the body of the
gun. The spring is normally under tension, tending to rotate the shaft V so as
to cause the toe V2 to project forward into the vertical groove a02. in the path
of the arm w¹ of the cocking lever W, which is pivoted at w in the breech block
(see Fig. 11).
Thus the toe V2 normally holds the cocking lever in the cocked position as
shewn in Fig. 9, or tends to engage the scar as the breech block is returned to
the closed position, as shewn in Fig. 11.
As the plate T is drawn to the rear, as in firing the gun, the shoulder to pulls
the toe V2 out of engagement with the cocking lever W and allows the spring
operated firing pin to fire the gun. After the gun is fired, the spring T will
return the sliding plate T to the initial position, while the spring V³ will throw
the toe V2 forward again, which toe will be pressed backward into its recess aº¹
as the arm of the cocking lever W passes in opening the breech block, and
will spring forward again to the position shewn in Fig. 11 as the breech block is
opened, being then in a suitable position for cocking the firing mechanism.
The firing pin X is operated by the spring X' bearing against the head
the firing pin, and also against the bushing X2 screwed into the rear of the
breech block.
of
This head is slotted as at a¹ to permit the passage of the head past the
pins Y, which pins are mounted in the breech block near its forward face and
project slightly into the cavity for the firing pin.
These pins Y may be secured in the breech block in any convenient way,
but are preferably provided with enlarged heads, screwthreaded as at y and
screwed into the breech block as shewn in Fig. 11.
The cocking lever is in the form of a bell-crank lever, the short arm w¹ of
which engages the cocking and releasing toc V2, while the upper and longer
arm w² engages in an elongated recess 2 in the firing pin X.
The base of the firing pin is provided with an opening in front of the rear
piece for cocking by hand, as with a hook or lanyard, or in any other con-
venient way.
The arm of the cocking lever projects also through a slot in the lower side
of the bushing X2, and the front face of this arm is curved forward. slightly
so as to project into the cavity for the firing pin and to take up the rearward
pressure of the spring X¹ while the firing pin is in the forward position. Thus
in this position the spring X' would press against the arm 2 of the cocking
lever instead of against the bushing X2, and would cause the sear to press rear-
ward against the firing pin, removing the point of the firing pin from the face
of the breech block after the gun had been fired.
The inertia of the firing pin and connected parts would be sufficient to carry
the firing pin forwards to the firing position, but as soon as the head of the
firing pin passes the inner ends of the pins Y, the driving effect of the spring X¹
would be removed from the head of the firing pin, while about the same time the
rearward pressure of the firing spring ✗¹ would be shifted from the bushing Xa

page_text: to the arm w², and the effect of the spring will be changed from that tendency to
push the firing pin forwards, to a tendency to move the firing pin backwards,
or in a reverse direction, and thus the fragile point of the firing pin will be with-
drawn within the inside of the protecting face of the breech block before the
breech block can be moved downwards.
Thus it will be seen that the firing mechanism is automatically protected
against premature discharges, and the point of the firing pin is protected against
possible accidents in opening and closing the breech, and also against accidentally
striking the primer while the cartridge case is in the gun.
For convenience in transportation, manipulation, etc., the sighting arm C³ is
preferably detachable from the rearward projecting arm C2 of the rocking slide.
For this purpose the arm C³ is provided with wedge-shaped dove-tailed ribs 3
engaging beneath the ribs of the arm C2, while the locking spring is pro-
vided with a notch and thumb lug 6. The notch engages in a suitable catch
in the arm C (see Fig. 23), and thus the ribs and and this catch and, spring,
hold the arm C3 in form engagement with the arm C².
When it is desired to detach the arm C³, this may readily be done by pressing
on the thumb lug and drawing the arm C³ to the rear.
Having now particularly ascertained and described the nature of my said in-
vention and in what manner the same is to be performed as communicated to
me by my foreign correspondent I declare that what I claim is :-
1. The improvements in rapid fire guns, substantially as hereindescribed and
shewn in the drawings hereunto annexed.
2. The improved cam arrangement for raising and lowering the breech block,
substantially as hereindescribed and shewn in the drawings hereunto annexed..
3. The improved cam arrangement for raising and lowering the breech block,
in combination with the extractors and the means for operating the same..
4. The improved cam arrangement for raising and lowering the breech block
in combination with the automatic means for operating the same, substantially
as hereindescribed and shewn in the drawings hereunto annexed.
5. The improved cam arrangement for raising and lowering the breech block
in combination with the automatic. means for operating the same, and with the
extractors and the means for operating the same.
6. The cam arrangement shewn in Figures 20 and 21, for operating the rock-
shaft, substantially as hereindescribed and for the purposes herein before set
forth.
7. The improved means for detachably connecting the rock-shaft to the body
of the gun, substantially as hereindescribed and shewn in Figures 10, 12 and 16
of the drawings hereunto annexed.
8. The improved extractor, substantially as hereindescribed and shewn in
Figures 17 to 19 of the drawings hereunto annexed.
9. The particular arrangements for supporting the trunnions of the rocking
slide, substantially as hereindescribed and shewn in Figures 7 and 8 of the
drawings hereunto annexed.
10. The combination of parts constituting the firing mechanism, substantially
as hereindescribed and shewn in Figures 9, 10 and 11 of the drawings hereunto
annexed.
11. The improved sliding bar for releasing the firing mechanism in combina-
tion with the safety device illustrated in Figures 3, 22. and 24.
Dated the 5th day of May 1899
PHILIP M. JUSTICE.