A Combined Gun Stock Extension and Recoil Cushion.
Year: 1892

page_text: Date of Application, 12th Aug., 1892
Complete Specification Left, 28th Apr., 1893-Accepted, 2nd June, 1893
PROVISIONAL SPECIFICATION.
A Combined Gun Stock Extension and Recoil Cushion.
We, ERASTUS JONES, Carpenter, of 78, West 124th Street, and RALPH
TOWNSEND, Builder, of 150, West 103rd Street, both in the City County and
State of New York, United States of America, do hereby declare the nature of
his invention to be as follows:-
This invention relates to a combined extension and recoil cushion for a gun stock
capable of adjustment to vary the length of the stock and of canting to suit the
marksman's shoulder and serving also to absorb the force of the recoil.
The extension is in the form of a flanged heel plate adapted to fit on the butt
end of the stock. The latter is provided with a fixed heel plate having conical
countersunk apertures leading to chambers bored longitudinally in the stock and
lined with longitudinally slotted tubular casings in which screw nuts are fitted to
slide as pistons but are prevented from turning by feathers engaging in said slots.
said nuts being forced outwards by spiral springs confined in the chambers behind
them. Into said nuts are screwed adjusting screws which pass through holes in the
extension or cushion plate and whose heads are countersunk and retained therein
by screw plugs screwed into the countersunk apertures and bearing against the
rounded ends of the screws so as to retain them securely without interfering with
the end wise canting of the extension or cushion plate in a longitudinal vertical
plane as hereafter described. The screws thus limit the outward movement of the
butt extension whilst the springs act as a cushion to absorb the recoil.
The screws may have plain prolongations at their inner ends which are received
in countersunk bores at the inner ends of the spring chambers such bores being of
elliptical or oblong section so as to confine the prolongations of the screws laterally
and to prevent lateral canting of the butt extension whilst permitting such canting
The ends of the fixed heel plate
in the longitudinal vertical plane of the butt.
are notched to receive corresponding tongues or feathers provided on the inner
surfaces of the end flanges of the butt extension and recoil cushion plate, the top
and bottom edges of the butt being correspondingly grooved and the inclined
under side of the butt being chamfered off parallel with the upper side to admit
of the end flanges of the extension and cushion plate fitting and sliding snugly
thereon.
The heads of the adjusting screws may also be rounded at their undersides and
received in correspondingly-rounded seats to facilitate the rocking or canting
movement of the extension and cushion plate. Instead of, or in addition to, spiral
springs behind the nut, a bow spring may be introduced between the butt and the
combined extension and cushion plate.

page_text: COMPLETE SPECIFICATION.
A Combined Gun Stock Extension and Recoil Cushion.
We, ERASTUS JONES, Carpenter, of 78, West 124th Street, and RALPH
TOWNSEND, Builder, of 150, West 103rd Street, both in the City, County, and
State of New York, United States of America, 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 relates to a combined extension and recoil cushion for a gun stock
capable of adjustment to vary the length of the stock and of canting to suit the
marksman's shoulder and serving also to absorb the force of the recoil.
Reference is to be had to the accompanying drawings, forming part of this
Specification, in which
Figure 1 is a longitudinal vertical section of the stock through the heel plate
extension and recoil cushion, and Figure 2 is a longitudinal horizontal section of
the same;
Figure 3 is a face view of the extension heel plate, partly broken away.
Figure 4 is a section on line 4--4 Figure 2; and
Figure 5 is a detail view of a modification of the adjusting screws and their seats
in the back plate.
The butt end of the gun stock A is covered by the ordinary heel plate 10 and
the inclined lower edge of the stock is flattened for a short distance, as at a, so as
to be parallel with the upper edge, both the upper and lower edges having
longitudinal grooves 11 and the heel plate 10 having corresponding notches 12 to
guide the stock extension and recoil cushion plate B. The stock extension is in
the form of a heel plate B having flanges 25 adapted to fit and slide on the parallel
portion of the butt end of the stock A being guided in this motion by feathers or
tongues 27 on the inside of the flanges 25 received in the grooves and notches 11
and 12 in the butt of the stock the feathers and grooves being preferably of
increasing depth toward the rear end, as shewn. The fixed heel plate 10 is secured
to the stock A by screws or by suitable locking devices and has two openings 13
and 14 surrounded by conical flanges 15 projecting into chambers 16 bored
longitudinally in the stock and lined with tubular metal casings. The rear ends of
the casings 17 abut against the inner ends of the flanges 15, which are of less
diameter than the casings, and each casing has a longitudinal slot 18 which may
extend from the outer to the inner end if desired. Within each casing 17 is loosely
fitted a disc nut 19 provided with a feather 20 adapted to slide in the groove 18 of
the casing 17, the nuts being forced outwards by spiral springs 24 confined in the 3
casings 17 behind the nuts but retained in the casings by the flanges 15. Through
each nut a screw 21 is passed, the said screws being provided with oval heads 22
and being usually threaded their entire length. The chambers 16 and casings 17-
are preferably round in cross-section and the screws 21 have guide stems 23 which
enter prolongations 16 of the chambers 16 which are oblong or elliptical in cross-
section if of less diameter than the chambers, the major axis being in the plane of
the stock so as to guide the stems 23 laterally without interfering with the canting
of the extension B in the plane of the stock. The extension heel or cushion plate B
is provided with two countersunk sockets 28 through which the screws 21 are
passed, the heads of the screws bearing upon the bottoms of the sockets whereing4
they are confined by screw-plugs 29 flush with the face of plate B and having
nicks 30 in their outer faces whilst their inuer faces are flat and bear directly upon
the heads 22 of the screws, without, however, interfering with the canting of the
extension or cushion plate B. By removing the plugs 29, the screws 21
screwed in or out to diminish or increase the normal distance of plate B from 5
may be
plate 10 and so shorten or lengthen the stock without, however, bringing the
plate B hard against the fixed heel plate 10. When this adjustment has been

page_text: made and the plugs placed in position, the extension plate B is cushioned by
the springs 24 which counteract and absorb the recoil due to the discharge of
the gun.
The extension plate B may be canted inward or outward at top or bottom to
suit the shoulder of the marksman, as the plugs 29 will rock upon the screw-heads 22
and the screws may be canted in their bearings, sufficient play being provided, and,
as shewn in Figure 5, the heads of the screws may be received in coned seats to
permit a rocking movement of the plate B. If desired, the spiral springs 24 may
be replaced or supplemented by a bow-spring which when used will be located
between the fixed heel plate 10 and the extension plate B, as shewn in dotted lines,
Figure 1. In any case, the springs serve the purpose of cushions only and the
stock is lengthened or shortened by the manipulation of the adjusting screws 21.
Having now particularly described and ascertained the nature of the said inven-
tion and in what manner the same is to be performed, we declare that what we
claim is :-
:-
1. The combination, with a gun stock, of an extension heel plate movable to and
from the end of the stock whereby the length of the stock may be accommodated
to the shoulder of the marksman, as set forth.
2. The combination, with a gun stock, of an extension heel plate movable to and
from the heel end of the stock and also capable of a canting movement in the
plane of the stock whereby the stock may be lengthened or shortened and accom-
modated to the shoulder of a marksman, as set forth.
3. A gun stock constructed as herein shewn and described.
4. The combination, with a gun stock, of an extension heel plate fitted to slide
upon the butt of the stock, of adjusting screws for regulating the distance of the
extension from the butt of the stock, and of spring cushions interposed between the
screws and the stock so that their action is independent of the adjustment of
the screws, as and for the purpose specified.
5. The combination, with a gun stock having grooves in the top and bottom
edges of its butt end, of an extension heel plate fitted to slide upon the butt
provided with tongues entering the grooves in the stock, adjusting screws having
their heads seated in the extension plate and screwing into nuts sliding in the stock,
and springs intervening between the extension plate and the stock, as and for the
purpose specified.
6. The combination, with a gun stock, of a cushioned extensible heel plate,
substantially as described.
7. The combination, with a gun stock provided with longitudinal bores containing
longitudinally-slotted casings, a fixed heel plate having apertures surrounded by
flauges extending inwards over the ends of the casings, nuts within the casings
provided with feathers fitted to slide in the casing slots, and springs within the
casings behind the nuts, of an extension plate fitted to slide upon the stock over
its fixed heel plate, the said extension plate being provided with countersunk
sockets, screws screwing through the nuts in the casings, and having their heads
seated loosely in the said sockets, and plugs screwed into the sockets to confine the
heads of the screws therein, as and for the purpose specified.
Dated this 20th u
this 26th day of Auth 1895.
Daitu 18 OLI QAY UI ADT11 LOND
E. JONES,
R. TOWNSEND,
By A. M. & Wm. Clark,
53, Chancery Lane, London, Chartered Patent Agents.