Improved Safety Mechanism for Guns.
Year: 1897

page_text: Date of Application, 23rd Jan., 1897-Accepted, 13th Mar.,
1897
COMPLETE SIECLE
Improved Safety Mechanism for Guns.
We, JOHN ROBERTSON, trading as Boss & Co., of 73 St. James Street,
Pall Mall, in the County of Middlesex, Gunmaker, and WILLIAM ADAMS, of
4 Havelock Terrace, Battersea, in the County of Surrey, 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:
The present invention relates to an improved safety mechanism for locking guns
so that same will not be capable of being fired either by the action of the trigger
or triggers or by a jar or shock of any kind when the safety bolt is in the "safety
position.
"
For this purpose the safety bolt in its movement to the "safety" position is caused
to act upon an interceptor the forward end of which is provided with a shoulder or
projection acting in conjunction with a corresponding projection on the hammer, so
that should the hammer from any cause be released by the sear it will only be
capable of moving forward until the projection thereon engages the interceptor,
which will arrest any further movement and so prevent the hammer from discharging
the gun.
This interceptor may be used either alone or in addition to the part of the safety
bolt which in guns as hitherto constructed is brought over the trigger or triggers
and prevents same being pulled when such bolt is in the "safety" position. It will
be further understood that the hammer interceptor above referred to may be applied
to single barrelled guns or to double barrelled guns actuated either by two separate
triggers or by a single trigger.
The method of carrying our invention into effect is illustrated in the accompanying
drawings, in which
Fig. 1 is a longitudinal section of a gun fitted with our hammer interceptor,
showing the parts in the position which they occupy when the safety bolt has been
moved to the safety position, and
Fig. 2 is a similar view showing the parts in the position they occupy when the
safety bolt has been moved to the position requisite for enabling the gun to be
fired.
In these views A is the safety bolt, which may be either actuated by hand or by
the action of opening the locking bolt for the purpose of recharging the gun, and
its downwardly extending arm a is provided with an inclined or cam surface a¹.
When the bolt A is moved back to the safety position shown in Fig. 1 the inclined
or cam surface a¹ is brought into contact with the pin b on the rear end of the
pivotted interceptor B, and causes such interceptor to turn on its pivot thereby
raising the forward end of same and bringing the shoulder or projection 6' on such
forward end to the position shown in full lines in Fig. 1. The hammer C is
provided at its upper end with a projection c, and (when the parts are in the
position shown in such Fig. 1) should the hammer C from any cause be released
by the sear D it in turning on its pivot under the action of its spring will bring
the projection c into contact with the shoulder b¹ of interceptor B and thus
(as shown in broken lines in Fig. 1) be prevented from striking the firing
pin E.
When the safety bolt A is moved forward to the position shown in Fig. 2,
such as by the action of its weight
the interceptor B will by any suitable means,

page_text: or by that of a spring or by that of a second incline on the safety bolt as shown,
turn on its pivot to the position shown, when it will be seen that the hammer C
when released will be free to act upon the firing pin E.
Having now particularly described and ascertained the nature of our said inven-
tion, and in what manner the same is to be performed, we declare that what we
claim is :-
The combination with a safety bolt of an inclined or cam surface formed thereon
and acting in conjunction with a pin or projection on one end of an interceptor,
the opposite end of which is provided with another projection or shoulder, which
when the safety bolt is moved to the "safety" position is brought in the line
of travel of a corresponding projection formed on the hammer of the gun, so
as to arrest the movement of the latter should it from any cause be released,
substantially as described.
ALLISON BROS.,
Agents for the Applicants.