Year: 1887

page_text: Date of Application, 26th Jan., 1887
Complete Left, 26th Oct., 1887
Complete Accepted, 26th Jan., 1888
I JOSEF SCHULHOF of Vienna in the Empire of Austria, Engineer do hereby declare
the nature of this invention to be as follows:-
This Invention relates to fire arms with a bolt lock and has for its object the
application of a simple mechanism to such bolt locks by means of which the back and
forward motion of the bolt or the opening and shutting may be effected. The sliding
bolt is provided with an arm or a link, hinged to its side by means of a pivot
or screw.
The moving or operating lever is pivoted in or on the casing of the fire arm and is
at one end connected movably to the before mentioned link or arm in such manner that
when the lever is pulled, at the other end,, the action of its end connected with the
aforesaid link will cause the latter to move forward whereby the breech-bolt is pushed
in or closed.
At the beginning of this motion the link or arm before referred to is at an angle of
about forty-five degrees, to the breech bolt, but as the lever is being pulled rear-
ward said link or arm is raised into a parallel position with the breech-bolt and brought
to bear with its rear end against the rear of the casing of the fire-amr or against a
shoulder or rest there provided for this purpose. At this moment the firing pin
is released by any of the known releasing devices and the pressure of the shot or
explosion against the breech bolt is received and sustained by the said link or arm
resting against the casing of the fire-arm or the shoulder or rest provided for it in
said casing.
The shot being fired a suitably arranged spring forces the breceh-bolt back into its
open position and puts the aforesaid arm or link and the pivoted lever.connected
thereto into their original position.

page_text: COMPLETE SPECIFICATION.
Improved Breech-mechanism for Fire Arms.
JOSEF SCHULHOF Engineer of No. 4 Nibelungengasse Vienna Austria 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 fire arms in general and to magazine arms in particular,
with a sliding bolt lock and has for its object the application of a
simple mechanism
to such bolt locks by means of which the back and forward motion of the bolt that is
to say the opening and shutting thereof may be effected, as well as the operating of
the feeding mechanism for the cartridges from the magazine to the chamber.
In the annexed drawings the invention is illustrated.
Fig. 1 is a right hand side view of the breech case of the fire arm after being
discharged with the side plate removed to show interior.
Fig. 2 is a like view seen from the left hand side with the breech bolt closed and
arm ready for firing.
Fig. 3 is a like view to fig. 2 with the breech bolt open after the cartridge shell has
been extracted.
In the drawings like letters of reference indicate like parts.
The sliding bolt a is provided with an arm or a link b, hinged to its side by means
of a pivot or screw b. The moving or operating lever c is pivoted in or on the casing
of the fire arm by a pivot or screw c' and is at one end connected moveably to link b,
by a pin ² engaging in an eccentric slot 62, of said lever c, in such manner that when
said lever c, is pulled at the finger end e³, which is suitably formed for the reception
of the finger or hand, the action of its eccentric slotted end connected in aforesaid
manner with link b, will cause the link b, to move forward, whereby the breech bolt is
pushed in or closed.
By this movement the mechanism is brought from the position shown in fig. 3 into
that shown in fig. 2. As seen from fig. 3 link b, is at the beginning of the described
motion situated at an angle of about 45° to breech bolt a, but as the finger lever c³ is
being pulled rearwards said link or arm b, is raised by the motion of pin c² in slot b³
into a parallel position with the breech bolt until when the latter is fully closed it is
brought to bear with its rear end against the inner rear wall of casing d which is suitably
formed to fit said rear end of link b, or which may be specially provided with a
suitably formed shoulder for this purpose. Trigger e is separately attached or pivoted
to the casing and connects with any known suitable device for arresting and releasing
the firing pin. Here for example trigger arm e¹ connects with a sear e² which stops
the firing pin and thus puts its spiral spring into tension while bolt a, is being closed.
When the finger lever c, c³, arrives in the position shown in fig. 2, the trigger e,
penetrates through an opening or slit in arm or ring c³ of the finger lever c where the
finger of the person handling the weapon touches it, thereby pulling the sear e²,
releasing the firing pin and thus firing the shot.

page_text: The rearward pressure or shock of the explosion is sustained by link b resting
against the interior of the casing as before described. After the shot is fired and the
lever c is released a spring f, bearing against a projecting shoulder c', of lever c,
which spring had been compressed in closing the bolt, forces lever c, and thereby
link b, and bolt a, back into the open position shown in fig. 3. By this motion which
may eventually be assisted by a forward push of the finger or hand against the end c³
of lever c the emptied cartridge shell is extracted and ejected in any of the well known
manners.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I declare that what
I claim is.
In fire arms with sliding breech bolt a mechanism for actuating said breech bolt
consisting of link or arm b hinged to bolt a and movably connected by pin 62, and
slit c², to an arm or lever c, pivoted to the breech case d and provided with end or
ring c³, said ring having an opening for the passage of the trigger e or part thereof
lever c being acted upon by a spring constructed combined and operating as
set forth.
WALTER A. BARLOW,
6, St. Paul's Churchyard, E.C.,
Agent for Applicant.