AN IMPROVED REPEATING SMALL ARM OR GUN
Year: 1881

page_text: LETTERS PATENT to Frederick John Cheesbrough, of the Office for Patents,
15, Water Street, Liverpool, in the County of Lancaster, Consulting Engineer,
for an Invention of "AN IMPROVED REPEATING SMALL ARM OR GUN."
A communication to him from abroad by Josef Nemetz, of Vienna, in the
Empire of Austria.
(Void by reason of the Patentee having neglected to file a Specification in
pursuance of the conditions of the Letters Patent.)
PROVISIONAL SPECIFICATION left by the said Frederick John Cheesbrough
at the Office of the Commissioners of Patents on the 28th July 1881.
FREDERICK JOHN CHEESBROUGH, of the Office for Patents, 15, Water Street,
Liverpool, in the County of Lancaster, Consulting Engineer. "AN IMPROVED
REPEATING SMALL ARM OR GUN." A communication to him from abroad by
Josef Nemetz, of Vienna, in the Empire of Austria.
This Invention relates to that class of small fire arms or guns known as repeating
guns, and consists in certain breech, hammer, and lock mechanism, whereby the
consecutive or repitition firing is effected.
In the construction of the gun there is used a cartridge holder which is placed in
a closed frame in the breech of the gun, and the cocking of the hammer is arranged
to move the cartridge holder in such a manner that upon every fresh cocking of the
gun one of the cartridges which are placed side by side in the cartridge holder is
moved into position in line with the barrel, and when in this position its explosion
is effected by the needle of the hammer. The cartridge holder is divided into two
parts united together by a hinge. Each of these parts is provided with a half
round groove corresponding to the form of the cartridges, so that when the holder
is closed each of the cartridges are exactly held in the grooves. The holder may

page_text: be made to receive six or more cartridges. The grooves in the holder are open in
front to correspond with the barrel of the gun, and are constructed at the back so
as to receive the needle of the hammer. At the back and bottom part of the
bolder there is fixed by means of a hinge a moveable closing piece, arranged so
that when the holder is open the said closing piece cannot fall too far back, and
when the holder is closed a provision thereon hooks over the closing piece and
presses it firmly upon the end of the cartridge therein. The lower part of the
holder is provided with a dovetailed guide which slides in a corresponding mortice
in the frame in which the holder is placed. By this arrangement the cartridge
holder is firmly held and can only be moved laterally. The frame or breech case
which receives the cartridge holder is provided in front with a cylindrical tapped
piece, which receives and has screwed into it the barrel of the gun. The back of
this frame terminates in a breech block, the interior of which is rounded to
correspond to the arc described by the upper or hinged portion of the cartridge
holder. The exterior surface of the hooked provision on the cartridge holder and
the interior surface of this breech block are exactly ground so as to properly
adjust one with the other. The sides of the frame are united by a lateral plate in
which is formed the dovetailed mortice which serves as a guide to the cartridge
holder. In the bottom of this mortice there is provided a straight groove of
rectangular form. In this groove there slide guide rods which act upon the dove-
tailed piece at the bottom of the cartridge holder, and serve to produce the
automatic movement in the cartridge holder each time the cock is drawn, the
movement being given by the action of the guide rod of the hammer. The
hammer slides upon a guide rod, and for this purpose it is provided with two
guides on the sides of the guide rod. At their outer parts these guides are joined
together by an arrangement of hinge. The guide carries a catch piece which is
provided with a spring which depresses the catch piece by bearing upon the rear
end of the hammer guide. So that the movement of the hammer is effectually
parallel with the guide rod, and so as to assure the blow of the needle on the centre
of the cartridge the parts are tongued, and grooved, and morticed. The guides of
the hammer may surround the main guide bar in such a manner as to enclose it
and dispense with other guides. Upon the guide rod of the hammer there is fixed
a safety plate which carries two locking pins, and in the middle is pierced a hole
for the needle of the hammer. These locking pins are of the same length as the
needle of the hammer and are located one on each side thereof, and serve to keep
the cartridges in position so that the one to be fired is in direct line with the
barrel; they also serve to secure the cartridge case. The main guide rod of the
hammer is carried on two supports, making a part of the base plate of the lock.
The hammer is held up to its work by a spiral spring which bears against the
hammer at one end, and the hammer guide rod support at the other end. The
trigger guard of the gun is fixed to the hammer guide rod by means of a gudgeon
attached thereto, which moves in a groove in the base plate of the lock and is
attached to the plate of the trigger guard.
To charge the gun the trigger guard is drawn back until a small pin fixed on a
spring on the trigger guard takes into a catch on the base plate of the lock. The
trigger guard is thus held in position and the gun is cocked. By the action of
drawing back the trigger guard the cartridge holder can be opened and charged
with cartridges. After being charged the cartridge holder is closed and the trigger
pulled. The trigger presses upon the spring and releases the pin from the base
plate of the lock, and the spiral spring at the other end of the hammer guide rod
pushes forward the guide rod, the hammer being held against the spring by a
catch. At the same time the safety plate which is fixed to the guide rod and its
nipples enter the breech block and secure the cartridge in position. The gun is
now ready for firing, and by further pressing the trigger the catch of the hammer
is disengaged, and the spring thereof forces the hammer against the cartridge and
fires it. After the first cartridge is fired, to cock the hammer and fire again, it is

page_text: necessary to pull back the trigger guard to the point where the catch of the
hammer engages in its stop and press the trigger. In pulling back the hammer
the cartridge holder is moved laterally so as to bring a fresh cartridge into position.
When the cartridge holder is empty it is refilled as previously described and is
moved laterally by hand to its normal position, so that the first cartridge will be
in line with the barrel.