IMPROVEMENTS IN FIRE ARMS
Year: 1879

page_text: LETTERS PATENT to Andrew Wyley, of 21, Barker Street, Aston Manor,
Birmingham, in the County of Warwick, for the Invention of "IMPROVEMENTS
IN FIRE ARMS.”
Sealed the 28th October 1879, and dated the 3rd May 1879.
PROVISIONAL SPECIFICATION left by the said Androw Wyley at the Office
of the Commissioners of Patents on the 3rd May 1879.
ANDREW WYLEY, of 21, Barker Street, Aston Manor, Birmingham, in the County
of Warwick. "IMPROVEMENTS IN FIRE ARMS."
My Invention has mainly for its object the further improvement of certain of
the firearms described or partially described as already improved in the Final
Specification of a Patent previously granted to me, and dated the 27th day of June
1874, No. 2238, and figured in the Drawing attached to same. In the present case
my improvements are confined to that class of arms in which the breech is closed
by a transverse block having a circular or angular motion, the axial line of which is
practically parallel to and beneath the barrel or barrels, and to Sefaucheux or barrel
tilting guns, with this exception; that some of the improvements applied to the above
are applicable to other fire arms. In stating my present improvements I indicate
the form of arm to which they are applicable by the numbers attached to the
Figures representing such form in the above recited Drawing.
In the form of arm shown in Figures 45 and 46 of the Specification referred to I
now place the segment on which the block travels in the middle instead of obliquely,
and increase its circumference to about three-fourths of the cylinder, the hollow in
the block corresponding.
In this state the block can be got into place and then a supplementary segment
forming part of the trigger-guard completes the cylinder, leaving a projection strip
which acts as a stop for the block in either direction.
The trigger guard is hinged at its rear end and is fastened in front by a
transverse pin.
An extractor sliding in a groove in the main segment, which groove is continued
under the screw of the barrel, has a projection stud which enters a partially cam
shaped groove in the hollow of the block. A cam recess behind this acts on a
projecting horn of the hammer.

page_text: As the block is moved to the right the cartridge is extracted and the hammer
cocked. Two small grooves are also required in the block to permit of its being
got into place. The block is cut away on the left side to permit of the motion of
the extracter and cartridge, and a piece is sometimes added to the segment, partly
to fill up the gap and partly as a stop to the block.
A lever extractor may be used, carried in an upright slot and actuated by a cam
on the right limb of the block, pressing forward its lower end.
I dispense with the cam or spring which I have hitherto used for drawing the
striker in guns of this class using curved incline grooves on the barrel or extractor
and on the outside of the "body" instead. This last arrangement I also use with
the form shewn in Figures 41 and 42 of the Specification, where the block is hinged
to the left side of an oblique segment. In it also I recess the finger of the hinge-
pin by which the arm is cocked in a groove in the rear of the body. In this as in
the previous form I make the hammer recess in the back of the block so as to be
cut out by a revolving cutter. A spring may be used to assist the extractor.
In the other form of transverse block arm in which the closing block is attached
to and operated by the stock represented as a single barrel gun in Figure 50 of the
Drawing already referred to, I sometimes use instead of a mainspring a spiral
spring under a tang of the usual form projecting from the block. The piston is
acted on by a cocking pin (as before) pressing against its lower part, and the needle
or striker may be attached to its upper edge.
The fore part of the action is now made as a single piece, into which the barrel is
screwed, but the screw is confined to about one half of auch fore part. In other
cases where a long cartridge is used the chamber for the last is made wholly or in
a great measure in this fore part, and the barrel brazed or soldered in advance of
same, or it may be united with a fine threaded screw.
This has the advantage of permitting that part in which the powder is first
exploded to be made of steel more or less hardened.
The above plan in accordance with which the forepart and its appendages
constitute a single piece is especially fitted for double barrels on this system but
is applicable as well to guns of the ordinary Sefaucheux kind.
In
The chambers should be inclined somewhat to correspond to the barrels.
double guns made on the above plan I prefer to use a bar or rod extractor
somewhat of the usual form but actuated by a cam on or attached to the central
spindle.
The arrangements for cocking are much the same as in the single gun, a circular
cam and sliding pin, but the latter instead of acting on the hammers directly acts
on a pair of tumblers, which as well as the triggers and main springs are brought
near the central line, the two last being mounted on a trigger plate. A tang of the
usual kind is used instead of the round spindle to attach the stock.
The cocking pin may be placed centrally in the spindle. The block or
"break-
off" turns to one side only so that both barrels may be loaded together. In the
modification shewn as applied to a pistol, Figure 51 of the former Specification, a
bar extractor like that above described may be used. I prefer to mount the stock
less at right angles to the barrel and raise that part of the metal work behind the
hammer, or even cover over the same to prevent its coming into contact with the hand
when firing. The head of the trigger rod is preferably cut away to adapt it more
to the finger. Double barrelled pistols may be made on this plan, the mainsprings,
hammers, and tumblers being placed nearly as those above described. The trigger
rod is carried backwards and turns slightly so as to disengage successively two
spring detents which take into bents in the rear of the tumblers.
The lock action and cocking pin used with the form of double gun above described
may be applied to arms on the Lefaucheux system, the circular incline being
replaced by one nearly straight on the rear edge of the fore part of the "lump."
The back part of the lump may be divided so as to pass over the cocking pin, or a
pin may be used on either side of the slot. The main springs may be mounted in
the body instead of on the trigger plate.

page_text: Instead of a horizontal bolt I lock the barrels by a top lever, the head of which
engages directly with an extension of the rib. The lever may be held in place by
a screw on its stem. The snap action may be obtained by a spiral spring round
the lower part of the latter. The lever is held in the open position by a spring
detent which is released by an incline on the extended rib.
A similar detent I also apply to the form of double gun shewn in Figure 19 of
the former Specification to maintain the lever in the open position, especially when
it is made to hook over the lump. This lever I prefer to make with solid trunnions
enclosed between the body and extended trigger plate, but neither of these improve-
ments are required when the lever is made to work the ordinary horizontal locking
bolt. I extend the triggers upwards so as to be caught by a safety detent or block,
the bell cranks being at their rear ends instead of their heads, a sliding detent
being used. The main springs, whether inserted in slots or holes or a combination
of the two, are mado to hook round the hinge pin, or they may be kept in place by
a stud or ledge at the fore-end, and supported by a set scrow or by "swells" on the
filling up pieces which extend from the trigger guard and kept in place by a
transverse pin. The last may also serve to retain in place the snap spring, but
this is perhaps more conveniently fixed by a stud or screw.
In fastening the fore-ends of military pattern rifles I use the arrangement shewn
in Figures 9 and 10 of the before mentioned Drawing modified as follows:-The
studs are soldered to the barrel by a larger oblong segment, especially the fore stud,
on which comes the strain of the sling.
The swivel of the last is not united by a screw pin but by studs which are sprung
into place. Provision is made that the fastening screws cannot come into contact
with the barrel and so force off the studs. I sometimes use internal ring bands
like those I have described in the former Specification, but so modified as to clip
slightly the edges of the fore-end. I modify the foresight of military pattern
by bevelling and polishing a portion at or above the junction of the sight proper
and block so as to reflect the sky and apparently insulate the top of the sight,
converting it to a detached bead or triangle which is stippled or cross-hatched so
as to appear of a dark tint.
As sights for rifles requiring little elevation, I employ a base of I section with a
slide in the upright limb which is made to rise by a rack and pinion or by a
projecting stud; a gap is cut for it through the horizontal bed. Or the upright
limb may be a finely screwed slightly inclined stud on which a square nut "lined"
in the middle of two or four of its faces rises and faces.
The faces are kept in a position normal to the barrel by a snap spring falling
into upright grooves in the inner surface of the nut.
The above sights and fore-end fastenings are applicable to arms generally as
well as to the forms of arm above described.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Andrew Wyley in the Great Seal Patent Office on the 3rd November
1879.
ANDREW WYLEY, of 21, Barker Street, Aston Manor, Birmingham, in the County
of Warwick. "IMPROVEMENTS IN FIRE ARMS."
This Invention has mainly for its object the further improvement of certain forms
of fire arms described, or partially described, as already improved in the Final Speci-
fication of a Patent previously granted to me, and dated the 27th day of June 1874,
No. 2238, and figured in the Drawing attached to same. In the present case my
improvements are confined to that class of arms in which the breech is closed by a
transverse block, having a circular or angular motion, the axial line of which is
practically parallel to and beneath the barrel or barrels, and to Lefaucheux or
barrel tilting guns, to which some of the contrivances I have hitherto used or now
use with the former class of guns are applicable. Some few of the improvements
made in connection with the above are applicable to other fire arms.
In stating these improvements the numbers and figures have reference to the
Drawings accompanying the present Specification, unless otherwise indicated.
In the first mentioned class of arm or those with side swivelling breech piece the
latter may operated by a handle or by the stock. In the former case the con-
struction now used is a modification of that shown in Figures 45 and 46 of the
Drawings attached to the former Specification. I now place the segment on which
the block travels in the middle, instead of to one side, making it about three fourths
of a cylinder, the hollow in the block corresponding. With this form the block can
be got into place, taking care to start with its right limb in contact with the
middle line of the flat base of the segment, and using this as a centre on which to
turn the block to the left till it fairly clasps the segment. The cylinder is then
nearly completed by a supplementary segment forming part of the trigger guard D,
having a projecting slip, which acts as a stop to the block in either direction
(Figures 1 and 2 of the accompanying Drawing). The cock and trigger are
mounted in a central slot as before. The trigger guard shown in Figure 5 is hinged
at its rear end to admit of the removal of the block or breech piece, and is fastened
in front by a transverse pin or screw passed through an upright "pin" on its fore-
part. The guard may be made to spring or snap over this pin, Figure 10, or it
may be fastened in front by a quarter turn of a screw with lever handle, part of
the head being cut away, as in Figure 11. Instead of the hinge a tooth and
socket joint may be used, Figure 5º. In the form shown in Figure 6 the same pin
which fastens the trigger guard carries a lever extractor placed in a central slot,
and which has a projecting toe capable of being forced forward by an incline on
the leg of the block when the latter is turned to the right. Preferable to this is
the "bar" extractor, Figures 1 and 4, sliding in a groove in the main segment, which
groove is continued under the rear of the barrel by cutting away a portion of the
screw. This bar has a projecting stud, which enters the cam groove G in the
hollow of the block (Figures 1 and 3), by which it and the cartridge are drawn back
when the block is moved to the right. To permit this a suitable gap is cut in the
block, the upper part of which forms an incline for pushing in a fresh cartridge.
A simpler cam K acts at the same time on the projecting horn of the cock. Both
cams are shown projected on a plane surface in Figuro 3, as also the smaller
grooves g and g', through which the extractor stud must be passed before it can
enter the groove G. This is done by first pushing in the extractor, then placing
the block with its right limb in contact with the middle line of the flat base of the
main segment, as already directed, the block is then turned to the left till the
stud has passed through the small groove g. The block being held in this position
the extractor is then drawn back, its stud passes through the opening g' till it
arrives at the main groove G. A further motion of the block to the left brings

page_text: it permanently into place, for dismounting, these motions are reversed. The
trigger is readily dismounted by knocking out or unscrewing the trigger pin, and
the cock is similarly removeable by blocking the mainspring when at full cock by a
wire or punch driven into the hole h, seen in Figure 1. During these operations
the trigger guard is bent back on its hinge or removed. If the block is further
cut away, as shown in Figure 3, it is easily got into place, its groove G' meeting
the stud of the extractor when the latter is in its back position. With this form of
block a spring may be used to accelerate the extractor, the action of which will be
understood from Figures 6 and 11.
In the older form of arm, in which the block is hinged to one side of an oblique
segment, I "recess the finger of the hinge pin in a circular groove or depression in
the rear of the body to lighten the weight and give less trouble in stocking (Figure 9).
I now make the hollow in rear of the block of a shape to be cut out by a revolving
cutter, Figures 2 and 18.
In the other form of arm, in which the block or breech piece is operated by the
stock to which it is attached, instead of by a handle, of which an example is given
in Figure 50 of the Drawing attached to the older Specification, I now use instead
of a main spring a spiral spring and piston, as shown in Figure 19.
On opening the gun by turning the breech piece and stock to the left the piston
is forced back by the cocking pin P¹ operated by a circular cam as before. The
needle or striker may be attached to or struck by the piston head, and the cocking
pin P may be loose, as in the case of "double" guns, Figure 23, or it may be part of
the piston head in single guns. Figure 19 represents one of the latter, the rear
part being in section. The piston stem is screwed in from behind the head, the
spiral spring having been already got into place. The head is prevented from
turning by a rib on its forepart entering a groove in the back of the breech piece,
which groove is a continuation of the slot in which the "sear" F is placed, and
when withdrawn from this by its square upper edge sliding along the flat under
side of the "tang" or "strap." The sear enguges with the lower side of the piston
head, and the trigger acts in the usual way. A continuation of the sear spring
acts on the "snap" pin which retains the arm in the closed state, Figures 19, 21,
and 22.
The projection in front of the guard acts as a stop. The guard is shown attached
to the breech pin, which it serves to unscrew, its fore end being screwed to the
"abutment" of the breech piece, or it may be free, falling into a groove crossing the
junction of the front and rear parts, and act in lieu of the snap spring already
mentioned, Figure 20. A wooden fore end may be used, though not here shown,
the axis or spindle being terminated by a round headed screw, which locks the
annular nut O when the last is adjusted. A safety lever held in place by a cross
pin which enters a groove in its stem in one position locks the piston by a small
stud; in the other a groove in the piston allows it to pass freely over the same stud.
A lever extractor is used as before. The trigger plate is attached by a dovetail
piece, Figures 19 and 21, fitting into a recess below the sear.
In double guns the lock mechanism is much the same, the pistons, springs, sears,
triggers, and upright dovetail pieces being in duplicate. The heads of the pistons
are nearly square so as to reach the strikers which are inclined inwards, and the
same cocking pin acts on both. Central guide pins are used, the cocking pin being
detached, Figures 23 and 27. A rod extractor placed between the barrels and
above the cocking pin, Figures 23 and 25, is used. The fore part of the rod has a
projecting stud which enters, and is operated by a cam groove on the annular
nut O; this groove is really in an adjustable ring which is driven over the front part
of the nut O, and holds by cone friction. A terminal screw may be used as in
single guns. The extractor rod is cut away in the upper part so that it can be
forced into place by springing back the stud. A detent, Figure 23a, fitted behind
the tang or strap has a cross head which engages with one or both pistons in
the cocked state, and is released by pressing down the lever knob whilst firing.
.

page_text: Figures 29 and 30 represent a modification of the ordinary lock mechanism as
applied to a gun of this class.
The cocking pin acts on a pair of central tumblers carried on the trigger plate, or
mounted as here shown between the trigger plate and rear of the breech piece.
The inainsprings act on the tumblers and are mounted on a trigger plate modified
from that shown in Figure 1. The cocks are made with solid axes which are
squared on the inner ends to enter the tumbler, Figure 29%, or may be in one
piece with them. The axes are enclosed between the breech piece and an upright
ledge on the trigger plate, which last may be fixed by a screw entering from
below, as shown, or by two screws, one on each side, entering from the rear below
the cocks. The trigger scars are placed in wide slots in the trigger plate, the
breech piece is cut away where it would interfere with the motion the extractor,
and so sloped as to push in the cartridge, Figures 23 and 30.
In single guns on this system the forepart of the action is made in one piece, but
the screw by which it is attached to the barrel is confined to half its length or
Jess, and the lower part being extended in the form of a cylindrical sleeve below
the barrel over which the wood of the fore end may be pased, Figure 20. In
other cases the cartridge chamber is made entirely in such fore part which is united
to the barrel by brazing by a fine screw, or in the case of very small bores by
tinning a cone joint round the fore part of the chamber in all cases being used.
Such a cone is indicated in Figures 19 and 23. In the latter case one barrel is
supposed to be removed. This permits the chambers in which the explosion
occurs, and the wearing surfaces to be made of steel more or less hardened, but not
so hard that the former cannot be bored out after brazing. This method by which
the cartridge chambers, sleeve, and rib (in the case of double barrels), constitute a
single piece is equally applicable to the ordinary Lefaucheux guns, in which the
chambers-lump and "extended rib," Figure 42, inay be all made of one single piece
of steel. The chambers of course are bored as near as may be to match the inclination
of the barrels.
In Figure 51 of the Drawing attached to the older Specification, a pistol is shown
into which a rod in the centre of the spindle or axis is used as trigger. Such pistol
I now make as follows:-I give greater inclination to the stock and raise the
metal work in the rear of the hammer to prevent the hand coming in contact
with the same when niming. The head of the trigger rod is cut away on one or both
sides so as to avoid jerk in "pulling." Its rear end is forked, Figure 39, so as to
pass over the tumbler part of the cock and is sprung over two small trunnion arms
on an upright spring detent d which holds back the cock. No spiral spring is
therefore required. The method of mounting the springs and the action of the
parts will be obvious from the Drawing, Figure 32.
Figure 35 shows a double barrel on this plan. Here the mainsprings and detents
nre double, of U shape, and mounted on each side instead of at the back of the
central plate by screwing, or as shown in Figures 34 and 35, and the trigger rod
acts on either detent in succession. A small pin m is screwed into the main
spindle. Its inner end enters a groove of U shape in the head of the trigger rod.
The spring round the rod has one end fast to the spindle, the other to the head of the
rod, and a considerable amount of tension is given to the spring which also acts in
the usual way. The pin m is now screwed in and occupies the position shown
Figure 40. A short arm f on the rear end of the trigger rod is now in contact with
one of tho spring detents d', and if the trigger is pulled one barrel will be discharged.
The position of the pin m is now opposite the groove connecting the legs of the U, and
the torsion of the spring causes it to fly towards the other leg which it enters as soon
as the finger pressure is withdrawn. Being now pulled, the small arm f impinges
on the other detent and discharges the second barrel. To fit it for a second dis-
charge the rod is pressed back and turned round by the head so as to enter the
groove it was in before. The extractor used in this pistol is shown in Figure 38. 5
It is placed in a square groove in the sleeve of the forepart, and the stud on its end
is operated by a cam groove on the spindle, Figures 33 and 34, when the breech

page_text: piece is rotated. A spring stop pin entering the groove n, Figure 33, limits the
motion in either way.
"
"
"
The lock action and cocking pin used with the form of double gun above described
Figures 29 and 30, may be applied to arms on the Lefaucheux system, the circular
incline being replaced by one of slight curvature on the rear of the foro lump
Figures 42 and 49 (the lump is hero shown as detached). The rear lump is either
suppressed or divided so as to pass over the cocking pin, Figure 42, or a pin may
be used on either side of the lump, Figure 49. The lock action may be the same as
that shown in Figure 30, or may be varied, as shown in Figure 42, by fitting the
trigger plate from behind instead of from below, and placing the mainsprings in
the body. These act directly on the cocks, and work partly in round holes
enlarged towards the rear end and partly in "cutter' slots which extend
as far as the front edge of the back" lump, and which are covered
by an extension of the trigger plate. The springs are retained, as shown, by
hooking round the hinge pin, or made with a cylinder head with deep saw cuts,"
Figure 47, and kept in place by a "set screw." As the cocking pin or pins are in
the way and prevent the use of a horizontal locking bolt, I fasten down the barrels
by means of a hooked extension of the rib and top lever in any of the ways already
known, but as I here depend on this alone I employ a strong and simple fastening
in the shape of a screw bolt worked by the usual thumb lever, which is let into a
dovetail in the bolt head and retained by a small screw, Figure 49. The screw
inny be on the stem of the bolt, Figures 42 and 50, or on the lower part of the head,
Figure 48. This bolt may be kept in the open and shut positions by a side spring
pressing on two flats on the bolt head, Figures 42 and 43, but to produce a snap
action the ordinary spiral spring is used, Figures 41 and 44. A flat or V spring
and swivel under the tang of the break off may be used instead. In most cases I
prefer a spiral torsion spring round the bolt stem, Figures 48 and 50. I sometimes
make the head of the bolt of stepped form, Figure 41. The motion of the lever in
either direction is limited by stops, not shown in the Drawing; or a stop pin
screwed in from above may travel in a groove in the tang behind the bolt head,
Figures 48 and 49.
"
"
To spring back the lever and produce the " snap action, the left hand sido of
the hook of the rib is sloped away to an edge. In Figures 44 and 45 a spring
catch is shown which serves to retain the lever in the open position till the former
is released by the descent of the hook of the rib.
A similar detent I also apply to the form of gun shown in Figure 19 of the
Drawing of the older Specification. It is a flat spring placed in a recess on one
side of the central alot, Figures 51 and 55, having a small stud which retains the
lever in the open position till the spring is pressed back by the descent of the lump.
I now make the lever with solid trunnions enclosed within the body and extended
trigger plate, Figures 51 and 52. Neither of the above are required when the
lever, instead of locking by a hook, works the ordinary sliding bolt, though even
here the lever with trunnions may be conveniently used, as seen in Figures 53
and 54. I now extend the trigger blades upwards so as to be caught by a spring
safety detent, Figure 51, or blocked by a side motion lever, Figure 56. The main
springs may be mounted pretty much as shown in Figure 42, but acting the reverse
way, or as shown in Figures 51 and 52, supported on "swells" on the filling up
pieces of the trigger plate which are kept in place by a transverse pin. The lever
spring has its fore end in a notch under the hinge pin, and is screwed to the solid
part of the "body," as shown by dotted lines in Figure 51, closing up the main
Blots.
In fastening the wooden fore end to the military pattern rifles, such as that first
described, use the arrangement shown in Figures 9 and 10 of the Drawing
attached to the older Specification, modified as follows:-The studs are soldered to
the barrel by a large oblong curved segment. The fore swivel of the sling is made
with short studs, and spring into place so as to leave room for the unscrewing the
upright fastening. pin. The screw of the last is terminated abruptly by a shoulder

page_text: to prevent its coming into contact with the barrel and so forcing off the stud. If
internal ring bands are used I make them with small projections to clip the wood
of the fore end, Figure 13.
I modify the fore sight of such rifles by bevilling and polishing them at or above
the junction of the sight proper and block so as to reflect the sky and apparently
insulate the top part, which is not bovilled but stippled or cross-hatched so as to
appear as a detached triangle or circle, Figure 14.
As sights for rifles requiring little elevation I employ a base of L section with a
block sliding between two upright limbs, which is made to rise by a rack and
pinion, Figure 15, or by a projecting stud, Figure 16, under which a turnscrew or
knife blade may be inserted. To got the fullest play of the slide a gap is cut for it
quite through the bed; or the upright limb may be a finely screwed, slightly
inclined, hollow stud, on which a square nut, "lined" in the middle of its four faces,
rises and falls. The faces are kept in a position normal to the barrel by a U shaped
snap spring screwed to the bottom of the hollow stud, and having on the upper
part of its arms knife edge projections which pass through slits in the stud, and
"snap" into four upright grooves in the internal screw of the nut. The above
sights and fore end appendages are applicable to other firearms. For the better
understanding of the above improvements reference should be made to the accom-
panying Drawings, of which Figures 5, 27, 28, and 31 are in rough perspective, and
also to former Specifications and Drawings, in which I have described fire arms of
the same class.
Having now described the nature of my said Invention, and in what manner the
same is to be performed, I declare that I claim,―
First. The method of construction shown in Figures 1 and 2, in which the block
can be got into place and travel upon a segment approaching three fourths of the
cylinder, as set forth.
Secondly. The hinged trigger guard carrying a supplementary segment nearly
completing the cylinder, as described.
Thirdly. The method of mounting the bar extractor in a hole under the end of
the barrel, as described.
Fourthly. The more symmetrical construction of the cock or hammer recess in the
rear of the block, as set forth.
Fifthly. The recess for the cocking finger in the rear of the body, as in Figure 18
of the annexed Drawings.
Sixthly. The constructions described and as shown in Figure 19 of the annexed
Drawings, in which a cocking pin and piston striker are used.
Seventhly. The employment of the last named arrangement to double barrel
arms, as described and represented in Figure 23.
Eighthly. The method of mounting the cocks and tumblers shown in Figures 29
and 30 of the annexed Drawings.
Ninthly. The trigger plate stud, seen in Figures 30 and 31 as modified from that
shown in Figure 1.
Tentbly. The peculiar construction of the extractor rod and the manner in which
it is got into place and operated, see Figure 23.
Eleventhly. I claim the trigger arrangement, more inclined stock, higher butt,
and improved trigger head in the pistol, shown at Figure 32 of the annexed
Drawings.
Twelfthly. The method shown in Figures 34, 35, 36, and 40, by which a
discharging of the double barrelled pistol by a single trigger can be effected.
Thirteenthly. The mode of mounting and operating the extractor, shown in
Figure 38.
Fourteenthly. The construction of the fore part of the action in single barrel
guns, as shown in Figure 20.
Fifteenthly. The construction of such fore-part, especially in the case of double b
barrels, of such a length as to contain the cartridge chambers, and connecting the
barrel by a cone joint round the fore part of the latter, as described.

page_text: Sixteenthly. The employment of the same system to Lefaucheux guns, as
described.
Seventeenthly. The employment of the cocking pin of the foregoing arm to
Lefaucheux guns, operating the same by a cam on the rear of the fore lump, as
described.
Eighteenthly. The various methods shown and described of locking down the
barrels by a screw bolt.
Nineteenthly. The use of a torsion spring round the bolt stem, as figured on
the Drawing.
Twentiethly. The methods shown of mounting the main springs, Figures 42,
47, 51.
Twentyfirstly. The solid trunnions as applied to the locking lever, and the mode
of mounting the same, see Figure 51.
Twentysecondly. The described method of mounting the lever spring.
Twentythirdly. The extension upwards of the trigger blades so as to be caught
by a safety detent, as described.
Twentyfourthly. The spring detents, Figures (41) and (55), but only as applied to
the guns with which they are shown.
Twentyfifthly. The improved stud attachment in connection with the improved
fastening pin and improved swivel, Figure 12, as described.
Twentysixthly. The improved internal band, Figure 13.
Twentyseventhly. The method of converting a
bead or detached fore sight, Figure 14.
"
military into apparently a
Twentyeightbly. The mode of mounting the sliding backsight, shown in
Figures 15 and 16, so as to descend through the gap cut in the bed.
Twentyninthly. The entire arrangement of the sight, shown in Figure 17, the
dovetail bed excepted.
In witness whereof, I, the said Andrew Wyley, have hereunto set my hand
and seal, this Thirtyfirst day of October, in the year of our Lord One
thousand eight hundred and seventy nine.
ANDREW WY
WYLEY. (L.&.)