Improvements in Small Arms.
Year: 1894

page_text: Improvements in Small Arms.
I THOMAS PERKES of 18 Cork Street Bond Street in the County of London
Gunmaker do hereby declare the nature of this invention to be as follows:-
My invention consists of the improvements hereinafter described in the intercepting
blocks or limbs used in small fire arms to catch or obstruct the hammer or tumbler
when the scear through any cause fails to hold it at cock. And also in the means
hitherto employed to prevent the scear from moving out of the bent in the hammer
or tumbler until the trigger is raised.
In that part of my invention relating to my improved intercepting block I form.
the ordinary scear without a stalk or arm and pivot thereon a limb which has a
stalk or arm to take the place of the one removed from the scear and is so constructed
as to be in a position to intercept the hammer or tumbler in the event of its.
premature fall, or prevent the expansion of the mainspring until required.
It may have a lateral, vertical, or sliding movement.
On raising the trigger the blade comes in contact with the stalk or arm of the
pivotted intercepting block and withdraws the other end of the limb out of the way
of the hammer or tumbler. At the same time the scear nose is being withdrawn
from its bent by the pressure of the trigger on the pivotted arm. The pivotted
intercepting block is returned to its original position by the action of a spring or
the formation of the trigger blade.
In that part of my invention relating to improvements in scear checks the pivotted
limb herein before described may be so formed as to take into a recess in or engage
with a projection on the action lock plate, trigger plate, or any convenient part of
the lock thus effectually bolting the scear nose in its bent. In this case it is not
necessary unless preferred to extend the pivotted limb so as to act as an intercepting:
block as before described.
The haminer or tumbler may be so formed as to receive the nose of the intercepting
block and thereby prevent the scear having any movement which will allow it to
be withdrawn from the hammer or tumbler by any cause other than the raising of
the trigger. In this form the pirotted limb acts as a combined intercepting block
and scear check and the hammer or tumbler intercepting block and scear are all
locked together.
Though I form my scear without a stalk or arm this is not absolutely necessary
and if preferred the scear may be allowed to retain its old, well known form.
Dated 22nd March 1894

page_text: Improvements in Small Arms.
I THOMAS PERKES of 18 Cork Street Bond Street in the County of London
Gunmaker 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 consists of the improvements hereinafter described in the intercepting
blocks or limbs used in small fire arms, to catch or obstruct the hammer or tumbler
when the scear, through any cause, fails to hold it at cock. And also in the means
hitherto employed to prevent the scear from moving out of the beat in the hammer
or tumbler until the trigger is raised.
In that part of my invention relating to my improved intercepting block, I form
the ordinary scear without a stalk or arm, and pivot thereon a limb which has a
stalk or arm, to take the place of the one removed from the scear, and is so
constructed as to be in a position to intercept the hammer or tumbler in the event
of its premature fall, or prevent the expansion of the mainspring until required.
It may have a lateral, vertical, or sliding movement.
On raising the trigger, the blade comes in contact with the stalk or arm of the
pivotted intercepting block, and withdraws the other end of the limb out of the way
of the hammer or tumbler. At the same time, the scear nose is being withdrawn
from its bent, by the pressure of the trigger on the pivotted arm. The pivotted
intercepting block is returned to its original position by the action of a spring, or
the formation of the trigger blade.
In that part of my invention relating to improvements in scear checks, the
pivotted limb herein before described, may be so formed as to take into a recess in,
or engage with, a projection on the action, lock plate, trigger plate, or any
convenient part of the lock, thus effectually bolting the scear nose in its bent. In
this case it is not necessary, though I prefer it, to extend the pivotted limb so as to
act as an intercepting block as before described.
The hammer, or tumbler, may be so formed as to receive the nose of the intercepting
block, and thereby, prevent the scear having any movement which will allow it to
be withdrawn from the hammer or tumbler by any cause other than the raising of
the trigger. In this form the pivotted limb acts as a combined intercepting block
and scear check, and the hammer or tumbler, intercepting block, and scear are all
locked together.
Though I form my scear without a stalk or arm, this is not absolutely necessary,
and, if preferred, the scear may be allowed to retain its old well known form.
Figure 1 of the accompanying drawings shows in section part of the action and
lock-work of a gun, fitted with my improved intercepting block, having a vertical
movement. The hammer being at full cock.
Figure 2 shows in section the same parts of a gun fitted with my improved
intercepting block having a lateral movement and capable of being bolted into the
action or the tumbler or both. The hammer being in the fired position.
Figure 3 shows in section an ordinary lock plate fitted with my improved lateral
moving scear check and intercepting block combined. The hammer being at full
cock.
Figures 4, 5, and 6, show the parts in detail of the improved mechanism illustrated
in Figure 1.
Figures 7, 8, and 9, show the parts in detail of the improved mechanism illustrated
in Figure 2.
Figures 11 and 12, show the parts in detail of the improved mechanism illustrated
in Figure 3.

page_text: Figure 10 shows the parts in Figure 3 in perspective. The tumbler being at
full cock, and the rose of the intercepting block being locked in its bent therein.
In the accompanying drawings similar letters refer to similar parts.
A is the tumbler, A¹ the scear bent, A2 the intercepting block bent, A³ being
the bent as formed in order to lock therein the nose of the intercepting block.
B is the scear, B' a shoulder for engaging with the intercepting block. C is the
intercepting block or scear, C' the stalk or arm, C² the shoulder for operating the
scear, and C³ the nose for intercepting the tumbler and locking therein when havin
a lateral movement, C is a projection on the lateral intercepting block for locking
into the action, lock plate, bridle, or other convenient part of the lock. D is the
trigger.
I will now proceed to describe with reference to the drawings and letterpress.
the operation of the various parts.
And firstly, I will describe the operation of my improved intercepting block
which is peculiarly suited to what is known as a box or boly gun, that is to say,
one in which the lockwork is contained in the body of the gun, and in which form
considerable difficulty has hitherto been encountered in obtaining a suitable part on-
which to pivot a device to intercept the tumbler. The mechanism is shown at
Figure 1. I form the ordinary scear B without a stalk or arm, and I pivot thereon
ny intercepting block C, upon which is formed a stalk or arm C, and also a
shoulder or projection C², whi engages with a corresponding shoulder B' on the
scear B.
The tumbler has two bents, it one of which at A' the scear engages. A² being
the bent in which the nose C3 of the intercepting block engages, should the scear
fail to hold the tumbler at cock. The pivot of the intercepting block being close
to its operating part gives a short travel or movement at the stalk, aud an increased
one at the other end. The pivotting of the scear is the reverse, as shewn in the
drawings, and the nose C³ of the interceptor is therefore enabled to come up level
with the nose of the scear before the latter begins to move. On raising the
trigger D it comes in contact with the stalk or arm of the interceptor C', and raises
it until the noses of the scear and the interceptor are level, as before mentioned ;
the shoulder C2 then engages with the shoulder B', and both the scear and inter-
ceptor are raised together clear of their respective bents. The scear and interceptor
are both returned by the action of the usual operating spring.
In that part of my invention relating to my combined intercepting block and
scear check, the mechanism is shown at Figures 2 and 3, and in detail at Figures 7,8,
9, 10, 11, and 12. Like my improved interceptor this also, and for the same
reasons, is peculiarly suited to box or body guns. I pivot on the bottom of the
ordinary scear B, which I form without an arm or stalk, my combined interceptor
and scear check C. This interceptor may have a projection C on the side (as
shown at Figure 9) which is capable of locking into the action, bridle, or other
convenient part of the lock. Where the projection C is formed on the inter-
ceptor C, such interceptor may be made to engage with the bent in the tumbler as
shewn at Figure 2, or not, as preferred. The scear is pivotted in the usual way,
and the interceptor is pivotted thereon, as shewn at Figures 2, 3, 7, and 10.
On raising the trigger D it engages with the stalk or arm C' of the interceptor C,
and the latter, as before stated, being pivotted underneath the scear B, it moves it
laterally out of the way of the bent A2, and, if so formed, also takes the projection C*
out of the locking recess in the action or other part. The trigger D continues to
press on the arm C' and takes the sear B, carrying with it the interceptor C, out
of its bent in the usual way. The scear B is returned by the usual scear spring,
and the interceptor C by means of a spring mounted on the scear.
The bent A of the tumbler may be so formed as to lock the nose C³ of the
interceptor C therein, as shown in Figures 3 and 10. This prevents, as does the
shoulder C shown in Figure 7, the scear from having any movement at all until
the trigger is raised, and forms a very simple and effective interceptor and scear
check.

page_text: Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. The combination with the scear of an intercepting block or sear pivotted
thereon and capable of being released by the trigger for the purpose and substan-
tially as hereinbefore described and illustrated in the accompanying drawings.
2. The combination with the scear B of the intercepting block or scear C so
arranged and constructed as to act as a combined interceptor and scear check or as
a scear check alone and substantially as herein before described and illustrated in
the accompanying drawings.
Dated this 21st day of January 1895.
THOMAS PERKES.