Improvements in Parallel Vices.
Year: 1892

page_text: Date of Application, 20th Aug., 1892
Complete Specification Left, 19th May, 1893-Accepted, 24th June, 1893
PROVISIONAL SPECIFICATION.
Improvements in Parallel Vices.
WILLIAM PARKER FOX and THOMAS Fox, trading as Fox. Bros., 92 West
Street Sheffield in the County of Yorkshire Engineers Tool Makers, do hereby
declare the nature of this invention to be as follows:-
The parts comprising these vices are ;
Fast jaw & casing in one peice;
Loose jaw screw & round slide;
1
Nut to work on screw, said nut is fitted in recess in casing; plate to take back
thrust of screw & carry out loose jaw & slide; nut to hold slide on to plate & jaw;
& pin through vice screw head.
We make the screw of square, buttress or any other suitable thread.
The nut to work on screw we make either whole or half to take in half the
diameter of screw.
Dated this 19th day of August 1892
WILLIAM PARKER FOX.
THOMAS FOX.
COMPLETE SPECIFICATION.
Improvements in Parallel Vices.
WILLIAM PARKER FOX and THOMAS FOX, trading as Fox Bros., Delhi
Works, Henry Street (late of '92 West Street) Sheffield, in the County of
Yorkshire Engineers Tool Makers 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 :-
The parts comprising these vices are ;
Fast jaw A & casing B which is cast in one peice.
Loose jaw C. Screw D. Round slide E.
in recess G in casing B.
Nut F to work on screw D & fitted
Plate H to take back thrust of screw D & carry out loose jaw C & slide E.
Nut I to hold slide E into jaw C & plate H.
Pin J through vice screw head K.
The screw D we make with square, buttress or other suitable thread.
Casing B we make in the form of an anvil L, or other suitable shape.
For a continues screw vice, we prefer a square thread screw D, working
through a whole nut F in recess G.
For a rapid action vice we prefer a buttress thread screw D, working in a half
or two half nuts in recess G, with any suitable releasing gear to disengage nut or
nuts from screw D, & so allow loose jaw C, slide E, & screw D, to be moved too or
fro without the action of screw D, nut or nuts.
The said suitable releasing gear may then be reversed & so engage nut or nuts
with screw D, thus enabling the vice to be used either as a rapid action or
continues screw vice.
Or we may have a releasing gear that will disengage the nut or nuts against the
pressure of a spring or springs placed in the recess G, when action of releasing
gear being reversed, pressure of spring or springs will again bring nut or nuts in
contact with screw D, & thus enable the vice to be used, either as a rapid action
or continues screw vice.

page_text: Having now particularly described & ascertained the nature of our said inven-
tion, & in what manner the same is to be performed, we declare that what we
claim is:
1st. For continues screw vice; To cast fast jaw A & casing B in one peice, with
casing B in the form of an anvil L, or any other suitable shape in combination
with the round slide E, screw D, whole nut F & loose jaw C as described.
2nd. For rapid action vice; To cast fast jaw A & casing B in one peice with
casing B in the form of an anvil L, or any other suitable shape in combination
with the round slide E, screw D, & half or two half nuts, with any suitable
releasing gear to engage or disengage nut or nuts with screw D.
Dated this 18th day of May 1893.
WILLIAM PARKER FOX.
THOMAS FOX.