Improvements in Bolt Locks for Rifles and other Fire-arms.
Year: 1891

page_text: Date of Application, 24th Apr., 1891
Complete Specification Left, 13th Jan., 1892-Accepted, 13th Feb., 1892
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 simple and inexpensive construction of the bolt lock
striker and locking gear employed for rifles and other fire-arms, the working parts
being protected from access of dirt or grit.
The bolt is as usual capable of being pulled back by a handle, pushed forward,
by which action the striker is cocked, and turned partly round so as to be held
firmly during discharge. The bolt is also as usual tubular containing a sliding
striker rod which is urged forward by a spring. A dog projects from the striker
rod in front of a shoulder through a lateral slot of the bolt. When the bolt is
pushed forwards this dog passes freely along a slot until it is arrested by a spring
stop so that during the rest of the forward movement of the bolt the striker rod is
held back and the spring is compressed. On now turning the bolt partly round,
the dog of the striker rod passes along a circumferential groove to a point
immediately behind the trigger, on pulling which the dog is released and the
spring urges the striker rod forward firing the charge. On now turning back the
bolt, the dog of the striker rod passes along another circumferential groove into
the same longitudinal slot as before and as the bolt is drawn back it passes the
spring stop which is latch shaped.
The stop may be fixed without a spring, which may be applied to the dog of the
striker rod, this being made as a spring latch to pass the fixed stop in its backward
movement.
-
The striker may be provided with a rebound spring which, after the charge is
fired, moves its point back to a safe position within the bolt. I prefer, however,
to make the act of turning the bolt partly round from the firing position draw back
the striker rod, by providing an inclined face in the rear part of the bolt to act on
a second dog fixed to the striker rod which dog is engaged in a longitudinal slot
like the former. The inclined face may be that of a lateral slot of the bolt, the
end of which may be closed, but in that case, in order to indicate that the striker
is cocked I fit in a hole at the rear end of the bolt a pin with an external head
which by means of an internal spring is held against the end of the bolt except
when the striker is drawn back causing the head of the pin to project_backwards,
thus shewing that the striker has been drawn back and so cocked. In order to
lock the trigger and also the bolt when the parts are in position for firing, I
through a lateral hole a short spindle having on it internally an arm that can be
turned up against the trigger and into a recess of the bolt, by turning up an
external arm at the side of the lock frame; both the trigger and the bolt being
thus prevented from moving. On turning down the external arm the internal arm
is also drawn down releasing the bolt and the trigger. I prefer to make the
external arm somewhat elastic with a stud engaging in a shallow hole so as to
make it somewhat difficult to move it to locking position.
Dated this 24th day of April 1891.
pass
ABEL & IMRAY,
Agents for the Applicant.

page_text: COMPLETE 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 bereby 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 simple and inexpensive construction of the bolt lock
striker and locking gear employed for rifles and other fire-arms, the working parts
being protected from access of dirt or grit.
Fig. 1 is a longitudinal section of a bolt lock according to my invention.
Figs. 2 and 3 are transverse sections on xx shewing the bolt in its two positions
of rotation.
Fig. 4 is a transverse section on y y.
Fig. 5 shews the end of the bolt and a side and end view of the safety dog..
Fig. 6 shews a modification of the end of the bolt, with indicator.
The bolt B is, as usual, capable of being pulled back by a handle H, pushed
forward, by which action the striker is cocked, and turned partly round as shewn
in Fig. 3 so as to be held firmly during discharge. The bolt B is also, as usual
tubular containing a sliding striker rod S which is urged forward by a spring. A
dog D projects from a boss on the striker rod through a lateral slot of the bolt B.
When the bolt is pushed forwards this dog D passes freely along a slot until it is
arrested by a spring stop A so that, during the rest of the forward movement of
the bolt, the striker rod S is held back and the spring is compressed. On now
turning the bolt partly round to the position shewn in Fig. 3, the dog D of the
striker rod passes along a circumferential groove to a point immediately behind
an arm C projecting up from a blade spring E on which is pivotted the trigger T.
On pulling back the trigger, its nose t, bearing against the metal above it, causes
the middle of the spring E to descend withdrawing the arm C so that the dog D
is released and the spring urges the striker rod S forward, firing the charge. On
now turning back the bolt, the dog D passes along another circumferential groove
into the same longitudinal slot as before, and, as the bolt is drawn back, it passes
the spring stop A which is latch shaped.
The stop A may be fixed without a spring which may be applied to the dog of
the striker rod, this being made as a spring latch to pass the fixed stop in its
backward movement.
The striker may be provided with a rebound spring which, after the charge is
fired, moves its point back to a safe position within the bolt.
I prefer however to make the act of turning the bolt partly round from the
firing position draw back the striker rod, by providing a notch N with an inclined
face in the rear part of the bolt to act on an inclined stud G projecting from a
boss F fixed to the striker rod this boss having a dog J engaged in a longitudinal
slot like D. The end of the bolt may be closed as shewn in Fig. 6, but in that
case, in order to indicate that the striker is cocked, I fit in a hole at the rear end
of the bolt a pin P with an external head which by means of an internal spring is
held against the end of the bolt except when the striker is drawn back causing the
head of the pin to project backwards, thus shewing that the striker has been
drawn back and so cocked. In order to lock the trigger and also the bolt when
the parts are in position for firing, I pass through a lateral hole a short spindle K
having on it internally a part that can be turned up against the spring E carrying
the trigger and an arm k that can enter a recess of the striker, by turning up an
external lever L at the side of the lock frame, both the trigger T and the striker S
being thus prevented from moving. On turning down the external arm L the
internal arm k k¹ is also drawn down releasing the striker and the trigger. I
prefer to make the external lever L somewhat elastic with a stud 1 engaging in a
shallow hole so as to make it somewhat difficult to move it to locking position.

page_text: Having now particularly described and ascertained the nature of this inveu-
tion and in what manner the same is to be performed, I declare that what 1
claim, in respect of bolt locks for rifles and other fire arms is :-
1. In combination with the striker S, the dog Darranged to move in longitudinal
and circumferential slots, the dog A, spring E, and trigger T constructed and
operating substantially as described.
2. In eombination with the bolt B and its rear notch N the boss F on the
striker with its stud G and dog J, substantially as described.
3. In combination with the bolt having closed end the spring indicator pin P,
substantially as described.
4. In combination with the trigger spring E and striker B the spindle K
external lever L and its internal arms kk, substantially as and for the purpose set
forth.
Dated thin 10th 2 S
1000
ABEL & IMRAY,
Agents for the Applicant.