Improvements in Instantaneous Grip Vices.
Year: 1889

page_text: Date of Application, 1st Jan., 1889
Complete Specification Left. 1st Oct., 1c89-Accepted, 16th Nov., 1889
PROVISIONAL SPECIFICATION.
Improvements in Instantaneous Grip Vices.
THOMAS SINGLETON of Bank Top Works, Darwen in the county of Lancaster,
Machine Maker, do hereby declare the nature of this Invention to be as follows:-
My invention consists in placing on the spindle of Engineer's, Cabinet Maker's, and
Joiner's parallel vices, a collar to join up to the neck of the loose jaw, such cellar
being for the purpose of drawing out the loose jaw of the vice.
I also attach a fixed collar upon the said spindle for the purpose of securing one
end of the spring placed upon the shaft. On the same shaft but at the opposite end
of the spring, I attach a loose collar having one or more recesses, which engage with
a similar projection or pin upon the side of the eccentric or cam, which is also loose
upon the spindle, the said cam being threaded to form what may be termed a
box nut...
The above named shaft is threaded or screwed to fit the box nut as in the ordinary
vice.
The aforesaid cam carries a notched plate, so that when the handle of the vice
is turned for, action, the eccentric raises the notched plate, so as to engage with
another notched plate, attached to the underside of the vice or stationary jaw, to
form a lock after being secured.
By this means.. I can firmly secure the articles fixed in the jaws of the vice, I
ilispense with the use of the incline now used upon the side of the eccentric or cam,
and I obtain a much longer following up motion. When the cam is turned so as to
release the toothed gripping plate, the loɔse jaw can be drawn out or pushed in as
required, and by turning the spindle an instantaneous grip is obtained, the difference
being the following up motion is less or more as required.
Or instead of the cam being threaded, I make the nut in the form of a boss, with a
solid collar, so as to fix on a loose cam, secured by a loose collar, so that the cam can
he worked without interfering with the screw part, so that it engages in the cam as
stated above.
Daied this Twenty ninth day of December 1898
JOHN E. WALSH,
Crossley Street, Halifax, Agent for the Applicant.
COMPLETE SPECIFICATION.
Improvements in Instantaneous Grip Vices.
I THOMAS SINGLETON of Bank Top Works, Darwen in the county of Lancaster,
Machine Maker, 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 :-

page_text: Upon the shaft A is the cam or eccentric E. tapped on to the shaft to form a box
nut, the aforesaid cam E carries a notched plate G. so that when the handle H of the
vice is turned for action, the eccentric or cam E. raises the notched plate G so as to
engage with another notched plate J. attached or formed upon the underside of the
body of the vice or jaw C¹ to form a lock, by this means the article in the vice is"
firmly secured in the jaws, and I dispense with the use of the inclines now used on
the side of the eccentric or cam and obtain a longer following up motion; when the
caun is turned to release the toothed gripping plate, the loose jaws C. can be pulled
out or pushed in as required, and by turning the spindle at the point required an
instantaneous grip is obtained. The cam has a projection K, which on turning the
spindle to release the gripping plate, comes against the frame L. of the loose jaw and
prevents it from turning round and so leaves the loose jaw that it can be drawn out or
pushed back.
•
At Figs. 2. and 3. I use a loose collar B¹ with a recess M. for one end of the spring
and a similar recess F. upon the collar of the cam or eccentric for the other end of
the spring, there is also a projection P. on the loose collar B¹ similar to the one on the
cam or eccentric and so the collar and the eccentric act as one solid nut.
The action is as follows:-upon drawing out the loose jaw C to the required
position, the handle H is turned operating the spindle A, which in turn operates the
spring F, causing sufficient friction upon the two collars D and B', to raise the
cam E, which in turn raises the notched plate G, until it engages with the notched
plate J; the screwed spindle A, operating with the cam E, gives the necessary
following up motion, thus causing an instantaneous grip.
Having now particularly described and ascertained the nature of this inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1. The combination in vices, with fast and loose jaws, of the collars, cam, spring,
and spindle, as and for the purposes, substantially as shown and described.
2. The general construction and arrangement of sudden grip vice, substantially as
shown and described.
Dated this Thirtieth day of September 1889
JOHN E. WALSH,
Crossley Street, Halifax.