Patent: Charles W. Hopkins

US 35419

Be it known that I, CHARLEs W. HOPKINS,
of Norwich, in the county of New London and
State of Connecticut, have invented a new and
useful Improvement in Revolving Fire-Arms;
and I do hereby declare that the following is
a full, clear, and exact description of the same,
reference beinghad to the accompanying draw
ings, forming part of this specification, in
which
Figure 1 is a central longitudinal section of
a pistol with my improvement. Fig. 2 is a back
view of the same. Fig. 3 is a transverse sec
tion of the same in the line ac a: of Fig. 1, look
ing toward the cylinder. Fig.4 is a front view
of the recoil-shield.
Similar letters of reference indicate corre
sponding parts in the several figures.
This invention relates to revolvers having
the bores, which constitute the chambers of the
cylinder extended right through the rear of the
latter to permit the introduction of the car
tridges from the rear.
The object of the invention is to facilitate
the loading of the several chambers without the
necessity of taking out the cylinder from the
frame or of opening the frame. –
To enable others skilled in the art to make
and use my invention, I will proceed to de.
scribe its construction aqd operation.
A B C D is the cylinder-frame, the back part,
A, of which constitutes the recoil-plate or fixed
breech, and which is otherwise constructed sub
stantially in the usual manner. E is the cylin
der axis-pin, and F the swinging arm, to which
it is attached rigidly, and which constitutes the
principal feature of my invention. This arm F,
arranged within the frame A B C D, fits close
against the front portion, B, of the said frame,
and isattached thereto by the pina, upon which
the said arm swings, the said pin being arranged
as near as practicable to the bottom of the frame.
The cylinder is fitted to turn freely upon the
axis-pin E, and the said pin protrudes a short
distance through the rear of the cylinder and
through the rotating ratchet b, formed upon
the rear thereof, and the so protruding part of
the pin is received within a bearing, c, provided
for it in the recoil-shield. This bearing cis open
to the right side of the recoil-shield, as shown
at d in Fig. 4, to allow the pin to pass in and
out and to permit the swinging movement of
the arm F. Fig. 4shows this opening don the
left side; but in this view the muzzle of the pis
tol is toward the spectator. The saidl opening
d does not prevent the axis-pin from having a
proper bearing, as the only tendency to displace
the pin is that produced by the rotating doge,
which presses in an upward direction.
G, Fig. 1, is a catch for locking the arm F
in an upright condition, and so keeping the
axis-pin in proper position to permit the cham
bers i i of the cylinder to be severally brought
in line with the barrel by the rotation of the
cylinder. This catch works through a slot in
the front part, B, of the cylinder-frame upon
a pin, f, inserted across the said slot, and it is
pressed into a notch, g, in the arm F by means
of a spring, h; but by pressing with a finger
or thumb on a portion of the said catch which
protrudes through the front of the frame the
said catch may be withdrawn from the notch
g for the purpose of permitting the arm F to
swing aside, as shown in red outline in Fig. 3,
and so to carry the axis-pin and cylinder far
enough in a lateral direction to allow the cham
bers, by turning the cylinder on the pin, to be
severally and successively presented outside
of the recoil-shield, as shown in Fig. 2, for the
reception of the charges. The lower part of
the arm F is so constructed or so provided with
a stop-pin, h, Fig. 3, to come in contact with
the bottom, D, of the frame that the arm will
only swing aside as far as is required for load
ing the chambers.
To load the chambers the hammer is first
placed at half-cock, to leave the cylinder free
to be turned by hand, and the catch G is then
pressed to liberate the arm F, which is then
free to drop or to be pushed aside to the position shown in red in Fig. 3. The charges are then put in the chambers one after the other, the cylinder, after the insertion of said charge, requiring to be turned far enough to present the next chamber in position for the reception of its charge. When all the chambers have been loaded it is necessary, in order to permit replacement of the cylinder in position for firing, to let down the hammer from and a little below the position of half-cock or the rotating dog will prevent the ratchet b passing. The easing or letting down of the hammer from half-cock draws back the dog far enough for the ratchet to pass it. When the axis-pin arrives in its bearing c the catch G. springs into the notch g and locks the arm F and the cylinder in place.
It is obvious that instead of placing the extremity of the axis-pin in the curved slot c the said extremity of the axis-pin might be supported in another swinging arm like that shown by F at the other end of the axis-pin.

What I claim as my invention, and desire to secure by Letters Patent, is The employment, in combination with the axis-pin E, of the curved slot c d and swinging arm F, substantially as and for the purpose herein shown and described.