Improvements in Instantaneous Grip Vices.
Year: 1893

page_text: Date of Application, 17th Feb., 1893
Complete Specification Left, 17th Nov., 1893-Accepted, 23rd Dec., 1893
PROVISIONAL SPECIFICATION.
Improvements in Instantaneous Grip Vices.
I, JOSEPH APPLEYARD, of Portland Street, Bradford, in the County of
York, Machine Maker, do hereby declare the nature of this invention to be as
follows:-
:-
This invention relates to improvements in that class of bench vices commonly
termed "instantaneous-grip parallel vices," in which the loose jaw may be adjusted
without turning the handle and the object of the invention is to simplify the
construction of this class of vice.
For this purpose instead of the screw usually employed I employ a bar preferably
of square or rectangular section and having a rack or ratchet shaped teeth on the
underside to engage a rack block connected to the fixed jaw in a similar manner to
the nut for the ordinary screw. The said bar is so arranged that it may be lifted
clear of the rack block to leave the movable jaw free to be adjusted to the required
position by simply sliding it in or out.
The said bar projects more or less at the front and the end is made cylindrical
and somewhat thicker and a screw thread is cut upon it. A nut is fitted upon this
screwed portion adapted to bear against the outer end of the slide of the movable
jaw and having a hand lever of the usual form loosely fitted in an eye therein.
This arrangement enables the movable jaw to be adjusted within the range of the
screw by turning the said nut. And to check any tendency of the bar to rise and
disengage the rack block when said nut is turned the screwed end of the bar may
be turned down at a slight angle with the bar and the end of the slide against
which the nut bears made at right angles thereto.
To enable the movable jaw to be pulled outwards by laying hold of the nut upon
the end of the bar the opposite end of the bar is fitted in an eye in that end of
the slide and a nut is fitted upon its outer end but sufficient play is left between
this nut and the end of the slide to allow the adjustment of the latter by the
before mentioned screw. A spiral spring may be fitted between this nut and the
rear end of the slide. Or instead of this arrangement a fork or its equivalent
may be formed on or fixed to the front end of the slide to engage a collar or
annular groove on or in the adjustable nut.
Dated this 16th day of February 1893.
DRACUP & NOWELL,
Bradford, Agents.
COMPLETE SPECIFICATION.
Improvements in Instantaneous Grip Vices.
I, JOSEPH APPLEYARD, of Portland Street, Bradford, in the County of
York, 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:—
This invention relates to improvements in that class of bench vices commonly
called "instantaneous-grip parallel vices," in which the loose jaw may be adjusted
without turning the handle and the object of the invention is to simplify the
construction of this class of vice.
For this purpose instead of the screw usually employed I employ a bar preferably
of square or rectangular section and having a rack or ratchet shaped teeth on the
underside to engage a rack block connected to the fixed jaw in a similar manner to
11011

page_text: the nut for the ordinary screw. The said bar is so arranged that it may be lifted
clear of the rack block to leave the movable jaw free to be adjusted to the required
position by simply sliding it in or out.
The said bar projects more or less at the front and the end is made cylindrical
and somewhat thicker and a screw thread is cut upon it. A nut is fitted upon this
screwed portion adapted to bear against the outer end of the slide of the movable
jaw and having a hand lever of the usual form loosely fitted in an eye therein.
This arrangement enables the movable jaw to be adjusted within the range of the
screw by turning the said nut.
To enable the movable jaw to be pulled outwards by laying hold of the nut
upon the end of the bar the opposite end of the bar is fitted in an eye in that end
of the slide and a nut is fitted upon its outer end but sufficient play is left between
this nut and the end of the slide to allow of the adjustment of the latter by the
before mentioned screw. A spiral spring may be fitted between this nut and the
rear end of the slide.
Reference is to be had to the accompanying sheet of drawings forming a part of
this Specification in which similar letters of reference indicate corresponding parts
in each of the figures.
Figure 1, is a longitudinal section of a vice constructed in accordance with my
invention.
Figure 2, is a separate plan view of said bar.
The rack block A is provided with a lug B on its underside fitting a hole C
formed in the Led piece D preferably cast with the fixed jaw E. The bar F has
ratchet shaped teeth G formed on its underside adapted to engage the corre-
spondingly shaped teeth on said rack block. The end of the slide H of the
movable jaw J is provided with an eye K through which the reduced end L of the
rack bar F is passed and a spiral spring M is placed thereon confined between
the end of H and the nut N screwed upon the end of L. This spring tends to
keep the opposite end S of the slide H against the nut O screwed by a preferably
square or buttress thread P upon the enlarged portion of the rack bar F. The
nut has a hand lever R similar to the lever of an ordinary vice passed
through it.
It is obvious that turning the nut O will move the loose jaw J within the limits
allowed by the extent of the screw P and spring M. And that when the nut O is
slackened the rack bar F may be raised clear of the rack block A leaving the loose
jaw free to be moved inward or outwards.
The outer end S of the slide H is inclined as shown to check any tendency
of the rack bar to be disengaged from the rack block by the action of
turning the nut O. The screwed portion P of the rack bar may be bent down
so as to be at right angles to the end S in which case the nut O bears fully upon
the said end.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
1. A vice in which the means of adjustment consists of a rack bar provided
with a screwed end fitted with a rotary nut adapted to bear against the
slide or its equivalent of the movable jaw, substantially as herein shown and
described.
2. The combination with a rack bar having a screwed end P, of the spiral
spring M, substantially as herein shown and described and for the purpose
specified.
Dated this 15th day of November 1893.
DRACUP & NOWELL,
Bradford, Agents.