Safety Lock for Breech-bolts of Guns.
Year: 1894

page_text: Date of Application, 13th Apr., 1894-Accepted. 30th June, 1894
Safety Lock for Breech-bolts of Guns.
I, Paul MausER, of Oberndorf on the Neckar, in the Kingdom of Würt-
temberg and Empire of Germany, 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, reference being had to
the accompanying drawings, and to the figures and letters marked thereon:-
The invention relates to the safety devices for breech-loading bolt-guns shown in
the Specification of Letters Patent No. 15371 dated September 30, 1889, and aims
to provide improvements in these safety devices.
The object of the invention is, by means of improvements in the safety devices,
to construct a very simple safety lock, the simplicity of which secures good working
and an easy loosening or disconnecting and re-connecting of the parts of the lock
and the bolt without requiring the use of any special tools in either operation.
In the accompanying drawings:-
Fig. 1, is a vertical axial section of those parts of the lock mechanism of the gun
to which my invention relates, showing the firing pin cocked and locked by the
safety device, the latter being in the "middle position."
Fig. 2 is an end elevation of the parts shown in Fig. 1 fitted on the gun stock.
Fig. 3 is a front elevation of the small lock alone.
Figs. 4 are front and back elevations of the safety device.
Referring to the drawings, A is the breech case of the gun, a the bolt working in
this case, 6 the firing pin, c the pin nut thereof, d the small lock in which the pin
nute is guided, and in the upper part 2 of which is carried or moves the safety
device E with its handle e¹ and its collar or flange e³.
As in the Specification of Letters Patent hereinbefore referred to, the safety
device E consists of an oscillatory cylindrical shaft e mounted in a cylindrical hole
or space in the ridge shaped upper part of the small lock d and extending in
an axial direction parallel with that of the bolt and firing pin. It projects within
the periphery of the end of the bolt a at its forward end and is recessed or cut out
at one side, so that when it is turned to the unlocked position, this recess will
permit the oscillation of the bolt relatively to the shaft e¹. But, in contradistinction
to the arrangement of the Patent 15371 of 1889, this shaft is fitted or placed
loosely in its hole in the upper part of the small lock d, and there is no spring
catch or snap and no corresponding groove in the periphery of the ridge of the
small lock. The handle e' has a space e* formed therein, and the ridge is fitted
with a ring shaped collar d projecting into the space e* of the handle e, which
overlaps this collar, and in this manner the withdrawal of the shaft e from the small
lock is prevented. Further, in the locked position, and also in the "middle
position," of the safety device, the flange e abuts against the front of the pin nut c,
whereby simultaneously the cocked firing pin is locked and also the safety device E
is fixed in its place and secured against withdrawal. The collar d' of the ridge
has on its right hand side a space or recess d¹ to give a free way to the handle e
when the safety device is being put into its place.
When it is desired to fire the gun the safety device is unlocked by throwing its
thumb piece or handle e¹ to the left hand side, thereby turning the shaft e so that
its recessed portion will permit the oscillation of the bolt and removing its flange e'
from the front of the pin nut c.
"
This flange or collar has two slight depressions et es in its front side, into which
the front of the pin nut enters in the locked position and in the "middle position'
of the safety device. The recess e corresponds to the unlocked position and allows

page_text: the pin nut to move forward when the gun is to be cocked or when it is to
be fired.
When the safety device is in its "middle position" the handle e stands vertically
and the cocked firing pin is locked and the pin nut c is in the depression e' of the
collare of the safety device E, (Figs. 1 and 2). The middle position is provided
for the purpose of enabling a loosening or disconnection of the parts of the lock and
of the firing mechanism when the gun is to be examined or cleaned. Then the gun
is cocked and the safety device turned into its middle position whereby the firing
pin is locked, whereupon the bolt may be taken out of the breech case and the
small lock, being in connection with the cocked firing pin, can be screwed off from
the bolt. After this the firing pin and its parts, spring and nut, can be disconnected
from the small lock in the usual manner. According to the method of disconnecting,
the loosened parts may be again connected and, in no case, neither, when the parts
are to be again connected, is any tool necessary.
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. In safety devices for breech-loading fire arms, the combination with the
breech-case, a bolt working therein, a firing pin working in said bolt, and a small
lock connected to said firing pin and swivelled to the end of said bolt, of a lock
carried by said small lock consisting of an oscillatory cylindrical shaft e mounted
in said small lock and having a handle or thumb piece e' with a space e* overlapping
a collar and a groove d' in the ridge of the small lock for holding it in position
and enabling an easy connecting and disconnecting of the parts of the lock and of
the bolt, substantially as herein shown and described.
•
2. In safety devices for breech-loading fire arms, the lock claimed in Claim 1,
having a flange e' with a recess e³ for the unlocked position of the safety device E,
to permit the forward movement of the firing pin, and having two slight
depressions e¹ e into one or other of which the front of the pin nut enters in the
locked position and in the middle position, substantially as herein shown and
described.
3. In safety devices for breech-loading fire arms, the peculiar combination and
arrangement of parts substantially as herein shown and described.
Bated this 18th day of April 1894.
Cater this on day on api
PAUL MAUSER,
By Harris & Mills,
23, Southampton Buildings, London, W.C., Agents.