An Improved Cramp or Rack and Jaws for Fitters' and other Vices, Joiners' and Cabinet Makers' Cramps, and for Analogous Uses.
Year: 1888

page_text: Date of Application, 10th Jan., 1888
Complete Specification Left, 10th Oct., 1888
Complete Specification Accepted, 23rd Nov., 1888
An Improved Cramp or Rack and Jaws for Fitters' and other
Vices, Joiners' and Cabinet Makers' Cramps, and for Analogous
Uses.
I WILLIAM SANDAY of Radcliffe on Trent, in the county of Nottingham, Gentleman,
do hereby declare the nature of the said invention for "AN IMPROVED CRAMP OR RACK
AND JAWS FOR FITTERS AND OTHER VICES, JOINERS AND CABINET MAKERS CRAMPS AND
FOR ANALOGOUS USES," to be as follows:-
The cramp the subject of the present invention consists of two metal racks, one
fixed on each side of a bed of either wood or metal, the teeth of these racks may bo
either square or saw shaped, and at any distance apart, and either at the top or bottom
of the racks.
The jaws of which there are two, may be wholly of metal, or partly metal and partly
wood, they are each provided with two legs which stride across the bed, their lower
ends being furnished with blocks of the same form as the teeth of the racks in
which they engage.
They can be placed in position with rapidity and ease, and brought up to the work
to be cramped, by slightly tilting them forward.
The jaws can be so constructed, that one may be fixed at the end of the bed,
and the other left free for traversing it, or both may be free to traverse the entire
length of the bed, consequently they can meet at any part thereof.
When not required for use they can be instantly removed from the bed, which
will allow of it being permanently fixed to the sides, or ends of joiners or other
benches.
The position of these jaws on the bed is regulated as required by tilting them as
described, when the blocks at the ends of the striding legs become disengaged from
the teeth of the racks and the jaws can then be slid along, till they are sufficiently
near or apart, to hold the work to be operated on, they are then tilted back
until they regain their normally vertical position and the blocks at their lower ends
then engage with the teeth of the racks, and become firmly rigid.

page_text: The jaws may be made to work in a slot or groove with a rack on each side, in
which case the cramp occupies very little space.
One of these jaws is furnished at its upper part with a plate, sliding up and down
in grooves in this jaw, which is provided with a slot or opening in the centre for the
vertical up and down movement of a screw threaded socket, fixed in the sliding plate,
a screw works in this socket, the end of the screw terminates in a head which can
slide up and down a groove in the sliding plate, for regulating the position
of the screw, so that its power is exercised on the plate, as near the centre of
the article held in the cramp as is possible. As an example, on placing a piece of
material or work between the two jaws, one of these is brought into close proximity
to the end of, or side of the material or article to be operated on, by very slightly
tilting it forward, and when close enough, the slide in the jaw bearing the screw, is
raised, and having got it in the position required, it is there fixed by a thumb screw
at the head of this jaw the vice screw is then turned by the lever at its end, and the
plate at the end of this screw, advances and is forced against the article under operation,
so that it is firmly held between the two jaws. The jaws for a vice, can be of various
shapes, and may be of wood or metal.
The racks may be cast upon the beds, and may be used in all cases where a parallel
or single jaw vice is required; the jaws can traverse from end to end, for holding work
of any dimensions.
These cramps can be advantageously employed for joiners vices, parallel vices,
for cramps in cabinet making, and joinery, for floor cramps, and for various purposes:
they can be constructed of any dimensions or strength suitable to the purpose to which
they are applied.
The surface of the bed on which the jaws slide, may be of any formation, that is to
say convex, concave, flat or any other form for the accommodation of the work operated
In lieu of a flat surfaced jaw, an iron pin, either round or other shaped may be
employed upon which a loose piece of either wood or metal may be placed, which is
often very advantageous.
on.
1000
MESSIEURS A. C. HENDERSON & Co.,
46, Southampton Buildings, and
Lincoln Place, Dublin,
Agents for the Applicant.

page_text: COMPLETE SPECIFICATION.
An Improved Cramp or Rack and Jaws for Fitters' and other
Vices, Joiners' and Cabinet Makers' Cramps, and for Analogous
Uses.
I WILLIAM SANDAY of Radcliffe on Trent in the county of Nottingham, Gentleman
do hereby declare the nature of the said invention for "AN IMPROVED CRAMP, OR
RACK AND JAWS, FOR FITTERS, AND OTHER VICES, JOINERS AND CABINET MAKERS
CRAMPS AND FOR ANALOGOUS USES," and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
In the accompanying drawings several views of the cramp, with rack and jaws are
represented as applied for the various uses referred to; the same letters of reference
indicate like parts where such occur in the respective Figures.
Fig. 1 shows a side view of the appliances alluded to, adapted to a carving bench.
In this case the teeth of the racks (of which there are two, one on each side of the
bench) are square and those of the blocks on the strident jaws correspond thereto in
formation (whether square or saw shaped).
Fig. 2, is a plan of Fig. 1.
Fig. 3, represents the racks, and jaws as applied to, ors bench, seen in plan, with
square or saw shaped teeth.
Fig. 4, is a side view of a rack and jaws.
various forms. In this figure the teeth are
latter, may in all cases assume
.esented as saw shaped.
Fig. 5, is an end view of a rack and j mounted on a bench with sliding plate, for
adjustment to suit work to be held.
Fig. 6 shows a jaw tilted forward to disengage its teeth from the rack, so that it
may slide along the bed.
Fig. 7. represents a vice with rack and jaw seen in side elevation.
Fig. 8 is a plan of the same Figure.
Figs. 9. 10. and 10 show a plan, side elevation and end view of a cramp designed
for use as a portable joiners cramp, in this a single and central rack is used. This
rack is carried in a slot or recess on the bed or body of the cramp, the jaw or head is
provided with an iron pin round or other shape over which a loose wood or other block
is placed, the teeth of the jaw are on its under face and gear with those of the rack,
over which they slide when required by tilting to allow of adjustment to accommodate
work.
The tilting motion is assisted by aid of pear or other shaped projections on each side
of the jaw or head.
Fig. 11. is a plan of the appliance adapted for use as a separate cramp.
Fig. 12 is a side elevation of a rack and jaws, one of which is fixed at the end of the
bed, but can easily be moved when desired.
Fig. 13. is a plan of a cramp, the jaw or jaws. of which work in a slot. or
groove, with a rack on each side, in which case the cramp occupies. very little
space.

page_text: The same letters of reference indicate like parts in the respective Figures, where
such parts recur.
The apparatus the subject of the present invention consists of one or two metal
racks A, when two are employed they are situated one on each side of a bed B, of
either wood or metal, when one only is used it is carried in a slot J, or recess vide
Fig. 9. the teeth of the racks may be either square or saw shaped, and at any distance
apart, and either at the top or bottom of the racks.
These jaws C. C may be wholly of metal or partly metal and partly wood each is
provided with two legs D, D₁, which stride across the bed B, their lower ends being
furnished with blocks E, of the same form as the teeth of the racks in which they
engage thoy may be made to work in a slot or groove J, Fig. 13, with a rack A on
cach side, they may either have flat surfaces or they may be furnished with an iron or
other pin F¹, round or otherwise shaped for carrying wood or other blocks G' forming
variously shaped heads or cramp faces pivoting freely on the pin to adjust themselves
to the work vide Figs. 9, 10, 104, and 13, these jaws can be placed in position with
rapidity and case and brought up to the work to be cramped by slightly tilting them
forward as shown in Figs. 6 and 10, in this latter Figure an end of which is shown, in
Fig. 10, pear or other shaped projections A¹ at the lower part of the jaw C, assists
this movement.
One of the jaws C₁, may be fixed at the end of the bed B, and the other C,
left free to traverse it, or both may be free to traverse the entire length of the
bed so that they can be brought to meet one another at any point along it.
When not required for use they can be instantly removed from the bed,
which can be permanently fixed to the sides or ends of a joiners or other bench.
The position of the jaws on the bed is regulated when required by tilting them as
described, when the blocks E at the ends of the striding legs D, become disengaged
from the teeth of the racks the jaws can then be slid along till they are sufficiently
near or apart to hold the work to be operated on, they are then tilted back until
they regain their normal vertical position and the blocks E, at their lower ends then
engage in the teeth of the racks and become firmly rigid.
One of the jaws C, Figs. 1, 2, 3, 5, 9, 10, 11, and 12 is furnished at its upper part
with a plate F, sliding up and down in a groove, in this jaw a screw H, works in
a socket, one end of the screw terminates in a head I "between which and the
other jaw the work is secured the position of the screw can thus be regulated for
exercising its power on the material held in the cramp between the movable jaw
and this screw.
As example on placing a piece of material or work between the two jaws or the
movable jaw and screw one of these is brought to bear upon the material or
article to be operated on by slightly tilting the movable jaw or jaws which when
close enough to the work the sliding jaw (", bearing the screw H, is raised and
having got it in the position required it is there fixed by a thumb screw G, at the head
of this jaw.
The vice screw H, is then turned by the lever at its end and the head I at the end
of the screw advances and is forced against the article in operation so that it is firmly
held between the two.
The jaws of a vice can be of various shapes, and may be of wood or metal.
The racks may be cast upon the beds, and may be used in all cases where a parallel
or single jaw vice is required, the jaws can traverse from end to end for holding work
of any dimensions.
These cramps can be advantageously employed for joiners vices, parallel vices, for
cramps in cabinet making and joinery, for floor cramps, and for various purposes,
they can be constructed of any dimensions or strength suitable to the purpose to which
they are applied.
The surface of the bed on which the jaws slide may be of any formation, that is
to say convex, concave, flat or any other form for the accommodation of the work
operated on.

page_text: Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is :-
1st. The construction of racks either double as in Figs. 1, 2, 3, 4, 5, 6, 7, 11, 12,
the teeth of which are either square, or saw shaped, and cast or otherwise fixed or
formed on each side of the bed B, or in a groove or recess as in Figs. 9, 10, 10ª, or
beneath it, or on its surface on each side of a recess J, as in Fig. 13.
2nd. In combination with racks of the above description strident jaws, the legs D,
of which are provided at their extremities with blocks E, of the same formation as the
teeth of the racks with which they engage.
Both jaws being free to slide or traverse the length of the racks, by slightly tilting
them forward as shown Figs. 6 and 10.
Or one jaw fixed and one loose as in Figs. 1, 2, 9, 10, 11, 12, one or other of which
is furnished with a sliding plate F, as in Figs. 1, 2, 4, 5, 9, 10, 12, and a vice screw H,
terminating in a head I, as in Figs. 1, 2, 3, 4, 6, 10, 12, such plate being fixed in the
position required for work, by the thumb screw G.
3rd. The combination with a vice, of a sliding jaw and rack working in a
similar manner to those previously described, and as represented by Figs. 7,
and S.
4th. The construction of racks of the description herein specified having either
convex, concave, flat or other surfaces one of the jaws being furnished with an
iron pin F, and movable block G¹, to accommodate work as shown in Figs. 9,
10, 10, and 13.
The wholo as and for the purposes herein specified.