Year: 1887

page_text: Date of Application, 30th Apr., 1887
Complete Left, 30th Jan., 1888
Complete Accepted, 9th Mar., 1888
We, ETHELBERT HARRIS, of 1 Marston Road, Stafford, in the county of Stafford,
Engineer and JOHN SHAW, of 30, North Street, Stafford, aforesaid, Engineer and
Draughtsman, do hereby declare the nature of this invention to be as follows:-
This invention relates to improvements in parallel vices whereby the vice can bo
adjusted in a quicker manner than hitherto, and. tapered articles can, if required, be
firmly gripped thereby with the thin end either upwards or downwards.
The
In carrying out our invention we mount the fixed jaw of the vice upon a bed plate
which is secured to the table, bench, or other place in any suitable manner.
front or moveable jaw is mounted pivotwise upon a slide which extends backwards
for some distance and passes and works through the body of the fixed jaw of the vice.
The upper part of the rear end of this slide is provided with a number of ratchet teeth
into which engages a pawl or pawls pivotted in the fixed jaw. The rear part of the
bed plate is formed with an inclined recess into which the rear end of the slide enters
if the front end be raised so as to disengage the teeth from the pawl. Through the
lower end or tail of the moveable jaw passes a screw the inner end of which bears
upon the moveable slide and whereby the said jaw can be moved on its pivot.
To make use of a vice of this description the jaws are opened by lifting the front
end of the moveable slide which being then released from the pawl as herein before
described can be drawn forward. The article to be gripped by the vice is then held
against the fixed jaw and the front or moveable jaw is brought against the said article
by pushing back the slide carrying the same, and the said slide will be retained in
this position by the pawl engaging in the teeth at the rear end of the same.
By then
slightly operating the screw of the moveable jaw the article will be firmly gripped and
if the said article be tapered or inclined it will be obvious that the moveable jaw will
automatically adjust itself to the sides of such article.
By this arrangement it will be seen that the screw is only used to tighten the grip
which has been already given to the article by operating the moveable slide.

page_text: To release the article from the grip of the vice the parts are operated in a reverse
direction to that already described.
It will be obvious that the teeth could be formed in the lower part of the front end
of the slide carrying the moveable jaw, and in this case the pawl would be situated in
the bed plate whilst the inclined recess would be formed in the upper part of the
fixed jaw.

page_text: We, ETHELBERT HARRIS, of 1 Marston Road, Stafford, in the County of Stafford,
Engineer, and JOHN SHAW, of 30, North Street, Stafford aforesaid, Engineer and
Draughtsman, 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 parallel vices whereby the vice can be
adjusted in a quicker manner than hitherto.
In carrying out our invention we mount the fixed jaw of the vice upon a bed plate
which is secured to the table bench or other place in any suitable manner. The front
or moveable jaw is mounted pivotwise upon a slide which extends backwards for some
distance and passes and works through the body of the fixed jaw of the vice. The
upper part of the rear end of this slide is provided with a number of ratchet teeth
into which engages a pawl or pawls pivotted in the fixed jaw. The rear part of the
bed plate is formed with an inclined portion or recess into which the rear end of the
slide enters if the front end be raised so as to disengage the teeth from the pawl.
Through the moveable jaw passes a screw the inner end of which bears upon or
works in a moveable slide and whereby the said jaw can be moved on its pivot.
In order to enable our invention to be fully understood we will proceed to describe
how it can be carried into practice by reference to the accompanying drawing which
represents a longitudinal section of a parallel vice constructed according to our
invention.
a is the bed plate upon which we mount the fixed jaw b of the vice, the bed plate
being secured to a table, bench or other place (not shown in the drawing) in any
suitable manner.
c is the front or moveable jaw and d is the slide upon which it is mounted pivotwise,
the slide d passing and working through the body of the fixed jaw b of the vice.
e indicates the pivot of the front jaw c, the said pivot being located in a downward
extension of the slide d.
9,9 are the ratchet teeth of the slide d and is the pawl pivotted at i in a recess j
in the fixed jaw b and engaging with the teeth in the slide d.
k is the inclined portion or recess of the bed plate a into which the rear end of the
slide d enters, as indicated by the dotted lines, if the front end of the slide be raised
so as to disengage the teeth g, g from the pawl h.
1 is the screw passing through the moveable jaw c and working in the slidé d. By
turning this screw the jaw c can be moved on its pivot e.
To make use of a vice of this description the jaws b and c being in the closed position
indicated by the full lines of the drawing they are opened by first lifting the front
end of the moveable slided which being then released from the pawl has herein before
described and shown by the dotted lines of the drawing, can be drawn forward after

page_text: which the slide d is allowed to resume a horizontal position. The article to be gripped
by the vice is then held against the fixed jaw b and the front or moveable jaw c is
brought against the said article by pushing back the slide d carrying the same, and
the said slide will be retained in this position by the pawl h engaging in the teeth g, g
at the rear end of the same. By then slightly operating the screw of the moveable
jaw c the article will be firmly gripped.
By this arrangement it will be seen that the screw is only used to tighten the
grip which has been already given to the article by operating the moveable slide d.
To release the article from the grip of the vice the parts are operated in a reverse
direction to that already described.
It will be obvious that the teeth g, g could be formed in the lower part of the front
end of the slide d carrying the moveable jaw c and in this case the pawl h would be
situated in the bed plate a whilst the inclined portion or recess k would be formed in
the upper part of the body f of the fixed jaw b.
Further the moveable jaw could be pivotted to the upper part of the slide d and
the screw be arranged to work in a tail portion of the said jaw and to bear against the
slide d.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is :-
1. In a parallel vice the combination of a fixed jaw, a moveable jaw pivotted to a
toothed slide adapted to work and be inclined within the fixed jaw so as to cause a
pawl to engage therewith or be disengaged therefrom, and a screw for tightening the
grip which has already been given to an article by operating the slide, substantially
as, and for the purposes herein before described.
2. The improved parallel vice hereinbefore described with reference to the
accompanying drawing.
Dated the 30th day of January 1888
G. F. REDFERN & Co.,
4, South Street, Finsbury, London,
Agents for the Applicants.