Improvements in Vices.
Year: 1893

page_text: COMPLETE SPECIFICATION.
Improvements in Vices.
I, GEORGE GLASSON of the Excelsior Works, Agard Street, Derby in the
County of Derby, Carpenter & Joiner, 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.
My invention relates to improvements in vices for the use of mechanics, carpenters
and others and particularly vices of that description known as parallel, instantaneous
grip or rapid action. My invention more especially relates to the fastening and
releasing action.
This object is obtained by providing the slide of the movable jaw with a ratchet-
bar (loosely held or hinged at the far end) into which a sliding ratchet piece or
ratchet pawl pivoted out of centre to a lug attached to the lower part of the fixed
jaw of the vice may automatically engage itself. The opposite end of the above
named ratchet-bar is provided with a screw on to which a nut supplied with a
suitable lever for final adjustment is screwed, or the above named ratchet-bar may
be provided with an internal thread into which a screw supplied with a suitable
lever may be screwed and used for final adjustment.
If desired the above named slide of the movable jaw may be provided with a
screw (supplied with a suitable lever) extending its whole length, into which a
half nut sliding or pivoted out of centre to a lug attached to the under part of the
fixed jaw of the vice may automatically engage itself.
The movable jaw may be slotted so that the ratchet-bar or screw may be raised
and so disengage itself from the ratchet-pawl or half-nut which being pivoted out
of centre falls and thus allows the movable jaw to be moved freely outwards.
When the ratchet-bar or screw is allowed to descend it presses on the shorter and
lighter end of ratchet pawl or half-nut and so levers up the opposite end which
consequently engages with the above named ratchet-bar or screw, or the movable
jaw may be made without a slot so that the ratchet-bar or screw cannot be raised
and in this case the sliding piece ratchet-pawl or half-nut is disengaged by means
of a lever attached to its under part and within easy reach of the workman.
spring suitably attached forces back the sliding piece ratchet-pawl or half-nut when
the lever is released.
A
The mechanics vice may be provided with adjustable steel faces to its jaws so as
to allow them to adjust themselves to tapering articles when desired.
These steel faces are held in position by bolts or studs passing through slotted
holes in the jaws of the vice springs suitably attached may be used to retain the
steel faces in their bed.
The mechanic's vice may be provided with a circular toothed or corrugated base
plate to be fixed on the bench and the under part of the vice also provided with
teeth or corrugations to fit into those of the above named base plate. By this
means the rice may be radiated to any angle, a bolt or stud being used to fix
it firmly.
I will now more particularly describe my invention reference being made to the
accompanying sheet of drawings Fig. 1.
A is the fixed jaw of the carpenter's vice which is firmly bolted to the bench X.
B the movable jaw attached to or made solid with the slide C which fits in guides
attached to or made solid with the fixed jaw A. A ratchet-bar D is pivoted,
hinged or loosely held at D' to the slide C and at the opposite end is provided with
a screw E on to which is screwed the nut F which is used for final adjustment and
actuated by the lever G.
A ratchet-pawl H
pivoted out of centre at H' to a lug attached to the lower

page_text: part of the fixed jaw A. A spring I fixed to the slide C presses on the ratchet-
bar D.
The movable jaw B is slotted at B' to allow the ratchet-bar D to be raised. When
it is required to adjust the jaws to a particular sized object the ratchet-bar D is raised
and so disengages the sliding ratchet piece or ratchet-pawl H which being pivoted
out of centre falls. The movable jaw B. and slide C may then be easily drawn
outwards. When the ratchet-bar D is released the spring I forces it down and on to
the short end of the ratchet-pawl H which levers up its opposite end and so engages
its teeth with those of the ratchet-bar D. A slight adjustment of the nut F by
means of the lever G. then causes an object placed between the jaws A & B to be
firmly held. It may be seen that the movable jaw B and slide C can be moved
inwards without raising the ratchet-bar D.
If desired the ratchet-bar D may be provided with an internal thread instead of
screw E. and in this case a screw would be attached to the nut F as shewn in
Fig. 3 at z.
In. Fig. 2 a headed screw provided with the lever G and extending the whole
length of the slide C. may be used instead of the ratchet-bar D before named. A
half-nut engaging with the screw would then take the place of the sliding ratchet
piece or ratchet pawl H before named. The movable jaw B may be made without
a slot.
The sliding ratchet piece or ratchet-pawl or half-nut would then be
disengaged from the ratchet-bar or screw by means of the lever J suitably arranged
and provided with a spring for forcing it back when the lever J is released. See
Figs. 3 & 4.
In Fig. 3 the jaws a &b of the mechanic's vice are provided with steel faces e d
held in position by bolts or studs e & f which allow them to adjust themselves to
tapering articles. Suitable springs are used to hold the steel faces cd in their beds
when not required to be tapered.
The mechanic's vice is toothed or corrugated in a circular form at g so as to fit
in similar teeth or corrugations in the base plate which is fixed to the bench.
The vice by this means may be radiated to any angle and firmly fixed by means of
the bolt and nut k.
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 for the use of mechanics, carpenters and others constructed with a flat
bar or bar of any suitable section having ratchet teeth thereon the said bar no
being rotable for the purposes above described.
2. A vice for the use of mechanics, carpenters and others having a self-adjusting
pawl for the purposes above described.
3. A vice for the use of mechanics, carpenters and others having a self-adjusting
half-nut for the purposes above described.
4. A vice for the use of mechanics, carpenters and others with the various
modifications substantially as above described.
Dated this 26th day of March 1893.
J. E. EVANS-JACKSON & Co.,
Agents for the said Applicant.