Improvements in Vices..
Year: 1893

page_text: Date of Application, 27th Dec., 1893-Accepted, 10th Feb., 1894
Improvements in Vices..
I, FERDINAND BOSSHARDT, of the Firm of F. Bosshardt & Co. of 4, Corporation
Street, Manchester, in the County of Lancaster, Patent Agent, do hereby declare
the nature of this invention which has been communicated to me from abroad by
Algernon Sidney Hubbell, of Norwich, New London County, Connecticut, United
States of America, Artist, and in what manner the same is to be performed, to be
particularly described and ascertained in and by the following statement:-
-
The object of this invention is to provide a vice that may be cheaply produced
and which, by reason of its peculiar construction, will have great gripping power.
To more clearly explain said invention a sheet of drawings is annexed hereto, in
which
Figure 1 is a side elevation and Figure a plan view of said vice.
Figure 3 is a longitudinal sectional view of the same taken on line æ―æ of
Figure 2.
Figure 4 is a plan view of the rear portion of the base plate a showing in proper
position thereon the cam-lever by means of which the movable jaw of the vice is
operated and
Figure 5 is a cross sectional view of the clamping nut k, hereinafter described.
The construction and operation of this invention is substantially as follows:-
a denotes a base plate formed with a block b the upper portion of which forms the
stationary jaw of the vice said jaw being shown in Figure 3 formed as a solid
part of said plate and block. The block is bored longitudinally to provide a
bearing for a rod c, said rod being designed to slide freely therein. The rod e
bears upon one end (the left hand end as illustrated in the drawings) the companion
or adjustable jaw b
It will now be readily seen by reference to the drawing that should jaws b¹—1,2
be opened, movement of rod c in the direction indicated by the arrow will cause
jaw 2, secured thereon, to travel toward jaw bl.
On plate a somewhat in the rear of the block b, is located an upwardly projecting
stud (Figures 3 and 4) which forms the pivotal support on which swings the
operating handle, or cam-lever e, of the vice. The inner end of said handle is
bored to receive the stud d and has located on its upper side a boss g, said boss
being shaped as a cam or eccentric (Figure 4) the same being preferably a solid
part of the lever (see Figure 3).
Supported on the free end of rod c is a loosely fitting nut k. Should the handle e
be placed in the position shown in full lines in Figures 1, 2 and 4 and the nut k
adjusted on rod c until its lower portion bears against the circumferential edge of
cccentric g, any movement of the handle e in the direction of arrow 2 will cause
said eccentric to force said said nut k gradually toward the direction indicated by
the arrow 1.
When the eccentric engages the lower portion of the nut the latter is rocked and
immediately binds the rod c and said rod and its connected jaw bare then drawn
rearward with and by the nut.
To insure the clamping or binding of the nut upon rod c the upper and lower
portions of said hole upon opposite faces of said nut are bevelled, so that the
instant the nut is rocked the sides of the hole immediately wedge and bind upon
rod c.
To prevent the nut k from becoming displaced and lost when the vice is not in
use, a small piu m is driven or screwed into the rod c near the free end of the
latter

page_text: In the drawings the vice is illustrated as supported upon a work bench or table n
to which it may be secured by screws or bolts a passing through plate a.
Assuming now that a vice of the above described construction is provided, that
the various parts are properly assembled and that it is desired to use the same: the
jaws are first opened to receive the object to be clamped (indicated by letters in
Figure 3) and the jaw is then moved up against said object until both jaws bear
against opposite sides thereof. The handle e having been previously placed in a
position corresponding to that indicated by full lines in Figure 2, the nut k is then
adjusted upon rode until said nut bears against eccentric as shown in the drawings
(dotted lines, Figure 3). A very slight movement of handle e will now force
jaw toward jaw ' as above explained and thus clamp the object s firmly between
said jaws.
The throw of cecentric is so gradual that nut k wedges firmly against its
circumferential edge and prevents any liability of the handle e, and its connected
eccentric to jar loose the same remaining in the position in which it is left until
relieved by the operator.
Having now particularly described and ascertained the nature of said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :-
In a vice, fixed and movable jaws, the latter having a rod extending through the
support of the fixed jaw, as set forth, a nut loosely mounted upon said rod, and an
eccentric adapted to engage and rock said nut substantially as and for the purpose
specified.
Dated th: 9-1
1000
F. BOSSHARDT & Co.,
4, Corporation Street, Manchester, Agents to Applicant.