Improvements in Vices.
Year: 1897

page_text: Date of Application, 2nd Mar., 1897-Accepted, 9th Oct., 1897
[Communicated from abroad by LUDWIG W. ECKERT, of Nyack, N.Y., in the
United States of America, Manufacturer.]
Improvements in Vices.
I, CHARLES JUNGE, of Lincoln Chambers, 75 Chancery Lane, London, W.C.,
Consulting Engineer, 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 smiths and other vices and its novelty consists in the
construction, arrangement, and adaptation of the parts as will be more fully here-
inafter set forth and specifically pointed out in the claims.
The object of the invention is to provide means for giving a limited lateral
movement to the movable jaw whereby the vice may be employed for gripping
objects, the sides of which are not parallel and thereby preventing their slipping
and disengagement.
The invention in its details is illustrated in the accompanying drawings, in
which
Figure 1 is a side elevation showing concealed parts in dotted lines;
Figure 2, is a top plan view also showing concealed parts in dotted lines, and
Figure 3, is a side elevation of the stationary jaw and partial section on the
plane of the line Z-Z in Figure 1.
Referring to the drawing, in which similar letters of reference indicate like
parts in all the figures, V is the movable jaw of the vice provided with a gripping
plate C in the usual manner, and at its lower end terminating in a horizontal
sleeve V, made somewhat in the shape of an arch and provided with two
flanges and, one at each end through which passes the actuating screw S.
B is the stationary jaw provided with a gripping plate C. It extends down-
ward over the sleeve VI of the movable jaw,and the side walls of this extension
forms a hemispherical shell 131, which is provided with fins or plates and any
suitable means for securing it to a bench or table G. Located within the shell B
is a supplementary hemispherical filling shell A, which embraces the sleeve V1 of
the movable jaw on each side leaving only sufficient room between them to permit
of the easy reciprocal motion of said sleeve. This filling shell is truncated in
front and rear so that it does not come down closely over the sleeve in those
directions. Fitting closely underneath the sleeve V₁ is a movable nut M, rotably
secured to the bench or table G by any suitable means, and which is tapped to
engage with the threads upon the actuating screw S. The screw S terminates
in an apertured ball S¹ at its front end provided with a handle H in the usual
manner, and at its rear end is secured to the flange by means of the nut S.
The operation of the improved vice is as follows: If an object with parallel sides,
for instance, a cube is placed between the jaws, and the movable jaw is caused to
approach the stationary one in the usual manner by rotating the screw S the
gripping plates C and C¹ hold the cube firmly, and the action of the implement is
the same as usual. Suppose, however, that that side of the cube nearest the

page_text: movable jaw be cut off at an acute angle so that its horizontal section will assume
a trapezoidal form, then as the jaws are brought together the pressure will cause
the movable jaw to swing around turning upon the nut M as a centre, the filling
shell A preventing any tendency on the part of the sleeve of the movable jaw to
move upward, and holding it safely in place while permitting its lateral motion.
As the vertical axis of the nut passes through the centre of the sphere of which
the shell A, is a sector, they turn simultaneously bearing against the under surface
of the shell B¹ of the stationary jaw. This rotation cannot be continued safely
beyond an angle of 35°, as if permitted beyond that limit the object to be grasped
would slip. It is not necessary that the shell B¹ or the filling shell A should be
spherical, they may be made from a cone or a cylinder having a vertical axis
without departing from the principles of my invention.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed, as communicated to me
by my foreign correspondent, I declare that what I claim is:-
1. In a vice, the combination with the stationary jaw, the sleeve of the movable
jaw and means for rotating the latter, of a filling shell placed between the sleeve
and the stationary jaw, and adapted to turn upon the same axis as the said sleeve.
2. In a vice, the combination with the stationary jaw and a rotatible nut,
through which passes the actuating screw of the movable jaw, of a filling shell
placed intermediate the walls of the stationary jaw and the rotatible nut and
adapted to turn upon the same axis as the rotatible nut.
3. In a vice, the combination with the stationary jaw and sleeve and actuating
screw of the movable jaw of a rotatible nut adapted to receive the actuating screw,
and a filling shell placed intermediate the sleeve and the stationary jaw and
adapted to turn with the former.
Dated this 2nd day of March 1897.