Means for Improving the Pull-off of Trigger of Magazine Rifles having Sliding Bolt Action.
Year: 1895

page_text: Date of Application, 25th Oct., 1895
Complete Specification Left, 7th Mar., 1896-Accepted, 11th Apr., 1896
PROVISIONAL SPECIFICATION.
Means for Improving the Pull-off of Trigger of Magazine Rifles
having Sliding Bolt Action.
1, DANIEL FRASER, of 4 Leith Street Terrace, Edinburgh, in the County of
Midlothian, N.B., Gun and Rifle Manufacturer, 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 means for improving the pull-off of trigger of magazine
rifles having sliding bolt action.
The essence of this invention consists in the substitution, as set forth hereunder,
of lever attachments, or tumblers, for the presently existing elongated trigger-arm
jointed to the oscillating lever in the Mauser, Mannlicher, and other magazine
rifles baving a sliding bolt action, in such a manner as to avoid the long movement
and double motion drag of the trigger before the firing-pin is released.
In carrying out my invention, I make use of the existing oscillating lever on the
joint of which is hinged a bell-crank form of lever; to the outer end of the oscillating
lever is attached a piece containing a notch or bent into which the upper point of
trigger engages. This latter trigger may be worked with a spiral or ordinary
spring. The action of the mechanism is as follows:-On pulling back the bolt to
reload, a projection No. 1 on lower surface of firing-pin comes into contact with a
projection on upper leg of the bell crank lever, and pushes it downward, while the
lower leg of same lever, acting on the trigger-piece, releases it from the aforesaid
notch or bent on the said piece, and permits the latter, with the oscillating lever
attached, to descend until the projection No. 1 on firing-pin passes over and to rear
of projection No. 2 on upper side of oscillating lever. When projection No. 1 has
passed over projection No. 2, the latter springs up to its original position and at
same time the trigger engages with the notch or bent. The angles in front of
projecting piece No. 1 and on rear of projecting piece No. 2 are now in contact
and are held so until the trigger is pulled, which movement releases the oscillating
lever, and at same time lowers the upper leg of the bell crank lever, when by the
pressure of the mainspring on the angles of projections No. 1 and No. 2, pro-
jection No. 2 with oscillating lever is forced downwards, permitting firing-pin to
pass free and fire the weapon. A small screw-pin coming into the notch or bent
from rear of the said piece is provided for the purpose of simplifying the adjustment
of trigger pull to any required weight.
It must be understood that the attached piece is only made use of to convert
existing arms. The oscillating lever and attached piece are virtually one, and
would be so made in new weapons.
As a modification of the above, I may discard the bell crank lever and the
oscillating lever and make a tumbler act directly between the trigger and
projection No. 1 on firing-pin.
may introduce an intercepting safety limb carried by an arm and actuated
only by the trigger, making it impossible for the firing-pin striker to reach the cap of
cartridge except by pulling the trigger. This movement 1 describe thus :-From
the position of the fulcrum of the said intercepting limb, it will be apparent that a
slight movement of the trigger clears the point of said limb, and permits the
firing-pin to pass, after which a spring restores the limb to its position. In the

page_text: event of any accident happening to the scear-nose permitting the firing-pin to pass
without the trigger being pulled, this limb acts as an interceptor, catching and
arresting the firing-pin on its passage forward.
Dated this 22nd day of October 1895.
JOHNSONS,
115 St. Vincent Street, Glasgow, Petitioner's Agents.
Means for Improving the Pull-off of Trigger of Magazine Rifles
having Sliding Bolt Action.
I, DANIEL FRASER, of 4 Leith Street Terrace, Edinburgh, in the County of
Midlothian, N.B., Gun and Rifle Manufacturer, 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 means for improving the pull off of trigger of magazine
rifles having sliding bolt action, and consists essentially in the substitution of lever
or tumbler attachments in lieu of the existing elongated trigger arm jointed to the
oscillating lever as in the " Mauser," "Mannlicher" and other magazine rifles
having a sliding bolt action, in such a manner as to avoid the long movement and
double motion drag of the trigger before the firing pin is released.
But in order that my said invention may be more readily understood and easily
carried into effect I will proceed to describe the same with reference to the
accompanying drawings.
Figures 1, 2, 3, and 4 are side views showing the internal parts used for effecting
the pull off of the trigger.
Figure 1 illustrates the present arrangement of lock and trigger as is used in the
1893 model of the "Mauser" magazine rifle having the elongation of the trigger
piece formed as a connecting rod acting directly on the oscillating lever A which
releases the firing pin, from which form of mechanism it will be seen that a long
drag on the trigger is inevitable.
Figure 2 illustrates the above existing mechanism with my improved mechanism
as adapted for use with same-that is to say, I employ the oscillating lever A and
I hinge or pivot to its joint a a lever P, somewhat after the form of a bell crank lever :
to the one or outer end of the lever A, I attach a depending piece or plate C having a
notch or recess c into which the upper point e of the trigger E engages: said trigger E
being operated by a spiral or ordinary spring F as shewn. The action of the
foregoing mechanism is as follows:-On pulling back the bolt to reload, the
projection G on the lower surface of the firing pin comes into contact with
the projection a¹, on the upper arm of the lever B and by so doing pushes the said
lever B down, whilst the lower leg of the same lever B acts on the trigger piece E,
and releases it from the notch or recess c in the piece or plate C, so as to permit
the said lever C along with the oscillating lever A to descend until the projection G
on the firing-pin passes over and to the rear of the projection H on the upper arm
of the lever A. When the projection G has passed over the projection H, the
latter springs up to its original position and at the same time the trigger E engages
with the notch or recess c in the piece or plate C. The angles in front of the
projection G and in rear of projection H are now in contact and are so beld until
the trigger E is pulled, which movement releases the lever A and lowers the upper
arm of the lever B, when by means of the pressure of the main spring on the
angles of the projections G and H, the projection H with lever A is forced
downwards so as to permit the firing pin to freely pass and fire the weapon.
In order to adjust the weight of the trigger pull, I provide a small screw pin e
which is screwed into the notched portion of the plate C as shown.

page_text: It is to be understood that the piece or plate C is only used when converting
existing arms, as in new ones the lever A and plate C would preferably be made
in one piece.
Figure 3 shows a modification of the above, in which I discard the use of the
bell crank lever B, and the oscillating lever A, and employ in lieu_thereof a
suitably shaped tumbler J which acts directly between the trigger E and the
projection G of the firing pin.
Also in accordance with my said invention, as shown in Figure 4, I may employ
an intercepting safety limb K carried by an arm L as shown, and actuated only
by the trigger, so that it will be impossible for the firing pin striker to reach the
cap of the cartridge except by pulling the trigger. The movements are as
follows: From the position of the fulcrum of the intercepting limb K it will be
seen that a slight movement of the trigger clears the upper point of the limb K
and permits the firing spring pin to pass, after which the spring N returns the limb.
to its position. In the event of any accident happening to the scear nose, or owing
to its being jarred out of the bent by any cause whatever, permitting the firing.
pin to pass without the trigger being pulled, this limb K acts as an interceptor,.
catching and arresting the firing pin on its forward passage.
The foregoing "interceptor " may be used in conjunction with any of the before
mentioned modifications as desired."
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 [
caim is :--
1st. The general arrangement, construction and combination of the various parts.
constituting the means for the pull off of the trigger of magazine rifles having
sliding bolt action, substantially as herein before described, with reference to and
shown in Fgure 2 of the accompanying drawings.
2nd. The general arrangement, construction, and combination of the parts con-
stituting the means for the pull off of the trigger of magazine rifles having sliding
bolt action, substantially as herein before described with reference to and shewn in
Figure 3 of the accompanying drawings.
3rd. In magazine rifles having sliding bolt action, the "interceptor" substantially
as hereinbefore described and shown in Figure 4 of the accompanying drawings.
Dated this 6th day of February 1896.
JOHNSONS,
115 St. Vincent Street, Glasgow, Applicant's Agents.