Improvements in Bolt Locks for Rifles and other Fire-arms.
Year: 1890

page_text: Date of Application, 4th Dec., 1890
Complete Specification Left, 4th Sept., 1891-Accepted, 24th Oct., 1891
PROVISIONAL SPECIFICATION.
Improvements in Bolt Locks for Rifles and other Fire-arms.
1, RICHARD MORRIS, of Bennett Park, Blackheath, in the County of Kent,
Engineer, do hereby declare the nature of this invention to be as follows:-
My invention relates to a construction of the bolt lock employed for rifles and
other fire arms, whereby I render its manufacture less expensive, and I protect the
working parts from access of dirt or grit.
The bolt is made, as usual, with a handle or other known appliance by which it is
drawn back, pushed forwards and turned partly round to engage studs projecting
from it in notches behind the breech; it is also provided as usual with an extractor.
The bolt is made tubular and contains a striker which when released by the trigger
is urged forwards by a helical spring. According to one construction, I acconi-
modate this spring within a tube attached to the breech end of the bolt, this tube
having a slot along its underside through which the catch moved by the trigger
projects to engage with a corresponding catch on the internal striker.
This tube containing the spring effectually covers the internal parts, protecting
them from access of dirt or grit.
According to a modified construction by which I am enabled to obtain a longer
spring while I shorten the bolt itself, I introduce the striker surrounded by the
spring into the bore of the bolt from its rear end and into this rear end of
the bore I screw a collar which forms the rear abutment of the spring. In order
to screw in this collar conveniently I make the part of the striker which slides
through it square or polygonal or with a flat on one side, and the hole in the
collar to fit it so that by turning the striker, I also turn the collar, screwing it
into its place. I then enclose the projecting rear end of the striker within a
projecting tube having a slot along its underside for passage of the trigger catch.
Instead of employing a helical spring surrounding the striker, as above described,
a spring in the form of an inverted V accommodated within the hollow handle
may be employed to act on the striker in a well known manner.
In order to give ready access to the breech of the charge chamber of the gun
for cleansing the recesses that receive the projecting studs of the bolt, I place these
studs in such a position on the front part of the bolt, that when the bolt is pushed
forwards and turned into position for firing these studs engage in front of portions
of the metal of the lock frame in direct line with the metal behind thus getting
ample support, and I am thus enabled to cut away the upper part of the metal
behind the breech so as to give free access to the breech.
Dated this 4th day of December 1890.
ABEL & IMRAY,
Agents for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Bolt Locks for Rifles and other Fire-arms.
I, RICHARD MORRIS of Bennett Park, Blackheath, in the County of Kent,
Engineer, 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 :-
My invention relates to a construction of the bolt lock employed for rifles and
other fire arms, whereby I render its manufacture less expensive and I protect the
working parts from access of dirt or grit.

page_text: The bolt is made, as usual, with a handle or other known appliance by which it
is drawn back, pushed forwards and turned partly round to engage studs projecting
from it in notches behind the breech; it is also provided as usual with an
extractor. The bolt is made tubular and contains a striker which when released
by the trigger is urged forwards by a helical spring. According to one con-
struction shewn in longitudinal section Fig. 1 1 accommodate this spring S within
a tube T attached to the breech end of the bolt B this tube having a slot A along
its underside, through which the catch moved by the trigger projects to engage
with a corresponding catch C on the head H of the internal striker P.
When the bolt B is turned partly round to be withdrawn, the head H of the
striker cannot turn its catch C being engaged in a groove; the cam shaped piece D
turning with the bolt acts on the cam shaped head H to push the striker back to
safety position.
This tube T containing the spring S effectually covers the internal parts,
protecting them from access of dirt or grit.
According to a modified construction shewn in longitudinal section Fig. 2 by
which I am enabled to obtain a longer spring while I shorten the bolt itself,
I introduce the striker P surrounded by the spring S into the bore of the bolt B
from its rear end and into this rear end of the bore I screw a collar E which forms
the rear abutment of the spring.
In order to screw in this collar conveniently I make the part p of the striker
which slides through it square or polygonal or with a flat on one side, and the hole
in the collar to fit it so that by turning the striker, I also turn the collar, screwing it
into its place. I then enclose the projecting rear end of the striker within a
projecting tube T having a sle A along its underside for passage of the trigger
catch. Instead of employing a helical spring surrounding the striker, as above
described, a spring S as shewn in Fig. 3 in the form of an inverted V accommodated
within the hollow handle K may be employed to act on the striker P in a well
known manner.
In order to give ready access to the breech of the charge chamber of the gun for
cleansing the recesses that receive the projecting studs of the bolt, I place these
studs M M as shewn in Fig. 4 in such a position on the front part of the bolt B,
that when the bolt is pushed forwards and turned into position for firing as
indicated by the dotted lines these studs M M engage in front of portions of
the metal of the lock frame in direct line with the metal behind, thus getting
ample support, and I am thus enabled to cut away the upper part of the metal
behind the breech from .e to y so as to give free access to the breech.
Having now particularly described and ascertained the nature of this inven-
tion and in what manner the same is to be performed I declare that what
I claim is :-
1. In a bolt lock for a rifle or other fire arm, in combination with the bolt B
and the striker Pits head H and rear spring $ the tube T enclosing the head and
spring substantially as described with reference to Fig. 1.
2. In combination with the bolt B and the striker P, its head H and surrounding
spring S, the collar E and the enclosing tube T, substantially as described with
reference to Fig. 2.
3. In combination with the bolt B having a hollow handle K and spring S
therein, the striker P and its head H and the enclosing tube T, substantially as
described with reference to Fig. 3.
4. The construction of the bolt with its studs so arranged as to give free access
to the breech, substantially as described with reference to Fig. 4.
Dated this 4th day of September 1891.
ABEL & IMRAY,
Agents for the Applicant.