Improvements in Cramps or Clamps for Use in Securing in Position Articles or Objects to be Operated Upon by Machinery, or for other Purposes.
Year: 1896

page_text: Date of Application, 15th Dec., 1896
Complete Specification Left, 15th Sept., 1897-Accepted, 30th Oct., 1897
PROVISIONAL SPECIFICATION.
Improvements in Cramps or Clamps for Use in Securing in Position
Articles or Objects to be Operated Upon by Machinery, or for other
Purposes.
I, HAROLD FLETCHER MASSEY, of Openshaw Manchester, in the County of
Lancaster, Engineer, do hereby declare the nature of this invention to be as
follows:
My invention relates to cramps or clamps for use in securing in position articles
or objects to be operated upon by machinery or for other purposes and has for its
object the provision of cramps or clamps which shall be simple in construction and
more convenient and efficient for use than those hitherto constructed.
In a cramp or clamp constructed according to my invention there are provided
a bar or rod which is formed with notches or teeth throughout any convenient
portion of its length and a jaw which is formed so that it may fit upon embrace
or surround the bar or rod above mentioned and be moved into different positions
thereon as may be necessary or desirable from time to time, and the said movable
jaw is provided with an extension or arm in which is mounted a screw made so as
to be capable of being readily turned by means of a handle or handles provided
upon it, or by means of a key applied to it. The said screw is arranged so that
it may by being turned in one direction be made to bear against the bar or rod
above mentioned and turn the movable jaw about the tooth or part of the said
bar or rod on which it may bear, and so press against the object to which the
cramp or clamp is to be applied the part of the jaw which is intended to bear
against such object. The said bar or rod may be provided with a jaw formed or
secured upon it and adapted to hear against any object to which the cramp or
clamp may be required to be applied or such bar or rod may be provided with a
screwed stud or projection and nut, or screwed studs or projections and nuts, or a
Fet-screw or set-screws or with a bolt or bolts, which may be passed into or through
a T slot or groove or T slots or grooves, or open or other slot or slots, or hole
or holes, formed in the table or bed or other convenient part of a planing machine or
other machine or object to which it may be intended to apply the cramp or clamp: or
the said bar or rod may be adapted to be mounted or screwed in any other suitable
manner in the table or bed or other part of the machine or object to which the
cramp or clamp may be intended to be applied. In order that the use of any
machine in conjunction with which the cramp or clamp may be required to be
used may not in any way be interfered with by the screw above mentioned such
screw is also so arranged that it shall not project beyond the end of the said bar or
rod or the jaw formed or secured thereon if the said bar or rod is provided with a
jaw formed or secured upon it. The movable jaw, or when two jaws are provided,
either or each of the jaws of the cramp or clamp may be provided with a bearing
part connected to it by a ball or universal joint of any suitable kind.
Dated this Fourteenth day of December 1896.

page_text: Improvements in Cramps or Clamps for Use in Securing in Position
Articles or Objects to be Operated Upon by Machinery, or for other
Purposes.
I, HAROLD FLETCHER MASSEY, of Openshaw Manchester, in the County of
Lancaster, Engineer, 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 cramps or clamps for use in securing in position articles
or objects to be operated upon by machinery or for other purposes and has for
its object the provision of cramps or clamps which shall be simple in construction
and more convenient and efficient for use than those hitherto constructed.
In a cramp or clamp constructed according to my invention there are provided
a bar or rod which is formed with notches or teeth throughout any convenient
portion of its length and a jaw which is formed so that it may fit upon, embrace
or surround the bar or rod above mentioned, and be moved into different positions
thereon as may be necessary or desirable from time to time, and the said movable
jaw is provided with an extension or arm in which is mounted a screw made so
as to be capable of being readily turned by means of a handle or handles provided
upon it, or by means of a key applied to it. The said screw is arranged so that
it may, by being turned in one direction, be made to bear against the bar or rod
above mentioned and turn the movable jaw about the tooth or part of the said
bar or rod on which it may bear, and so press against the object to which the
cramp or clamp is to be applied the part of the jaw which is intended to bear
against such object. The said bar or rod may be provided with a jaw formed or
secured upon it and adapted to bear against any object to which the cramp or
clamp may be required to be applied or such bar or rod may be provided with a
screwed stud or projection and nut or screwed studs or projections and nuts, or a
set-screw or set-screws or with a bolt or bolts which may be passed into or through
a T slot or groove or T slots or grooves, or open or other slot or slots or hole
or holes formed in the table or bed or other convenient part of a planing machine
or other machine or object to which it may be intended to apply the cramp or
clamp, or the said bar or rod may be adapted to be mounted or screwed in any
other suitable manner in the table or bed or other part of the machine or object
to which the cramp or clamp may be intended to be applied. In order that the use
of any machine in conjunction with which the cramp or clamp may be required
to be used may not in any way be interfered with by the screw above mentioned
such screw is also so arranged that it shall not project beyond the end of the said
bar or rod or the jaw formed or secured thereon if the said bar or rod is provided
with a jaw formed or secured upon it. The movable jaw, or when two jaws are
provided, either or each of the jaws of the cramp or clamp may be provided with
a bearing part connected to it by a ball or universal joint of any suitable kind.
In Figs. 1, 2 and 3 of the accompanying drawings, in all the figures of which the
same letters of reference are employed to indicate corresponding parts, is illustrated 4
one form of cramp or clamp constructed according to my invention, and in
Figs. 4, 5 and 6 of such drawings is illustrated another form of cramp or clamp
constructed according to my invention. Fig. 1 is a side elevation of the cramp or
clamp illustrated in Figs. 1, 2 and 3, Fig. 2 is a plan of the movable jaw of such
cramp or clamp, and Fig. 3 is an inverted plan, or view from below, of the bar or 4
rod employed in the said cramp or clamp. Fig. 4 is a side elevation of the cramp
or clamp illustrated in Figs. 4, 5 and 6, Fig. 5 is a plan of the movable jaw of such

page_text: cramp or clamp and Fig. 6 is an inverted plan, or view from below, of the base
of the said cramp or clamp and is in part a horizontal section through the stud
with which such cramp or clamp is provided in order to be secured to the bed or
table or other part of the machine or object to which the cramp or clamp may be
intended to be applied. In each of the cramps illustrated in the accompanying
drawings (a) is the bar or rod formed with notches or teeth throughout a
convenient portion of its length, and (b) is the jaw which is provided for use with
such bar or rod (a) and is formed so that it may fit upon, embrace or surround the
bar or rod (a) and be moved into different positions thereon as may be necessary
or desirable from time to time, and (6) is the extension of the jaw (b) in which
is mounted a screw (c) made so as to be capable of being readily turned by means
of a handle (c) provided upon it. Each screw (c) is also provided with faces (c)
to which a screw-key or other appliance may be applied in order that such
screw may be turned. Each of the jaws (b) illustrated in the accompanying
drawings is provided with a slot through which passes the rod or har (a) with
which such jaw (b) is employed and is also formed with a tooth (b) formed in
the interior of the slot provided in such jaw and capable of being placed in
engagement with any of the notches or teeth of the said bar or rod (a) and when
placed in engagement therewith of acting as a fulcrum by means of which the
said jaw (6) may as will hereinafter be further described bear upon the said har
or rod (a) when turned in relation to such bar or rod (a) by means of the screw (c).
Each jaw (b) is provided at one end with a knob (6) forming a portion of a sphere
which is inserted into a recess formed in a plate (6) formed with ears which after
the knob (63) has been inserted in the said recess are beaten or pressed down on to
the said knob (6) so as to hold the plate (6) upon the knob (b) while allowing
it to he moved or turned about such knob (b) through some distance in any
direction. The knob (b) and the ears upon the plate (b) thus constitute an
universal joint. The knobs (6) illustrated in the accompanying drawings are
shown as being formed upon studs rivetted in the jaws (6) upon which such knobs
are provided, but the said knobs may obviously be provided in any other suitable
manner. The plate (b) upon each jaw (6) is formed with a surface to be applied to
and made to bear against any article or object to which the cramp or clamp in which
such plate (64) is employed is to be applied. The bar or rod (a) of each of the cramps
or clamps illustrated in the accompanying drawings is formed at its end (a*) with a
projection (a) in order that the jaw (6) used therewith may not be accidentally
removed from such har or rod (a) when in use.
The bar or rod (a) of the cramp or clamp illustrated in Figs. 1, 2 and 3 of the
accompanying drawings is provided with a jaw (a) formed upon it and adapted
to bear against any object to which the said cramp or clamp may be required to
be applied.
The bar or rod (a) of the cramp or clamp illustrated in Figs. 4, 5, and 6 of the
accompanying drawings is provided with a base (a) by which it may bear against
the table or other convenient part of a planing machine or other machine or
object to which the cramp or clamp may be applied in use and with a stud (5)
provided with a washer (a) and nut (a) to be inserted in a T slot or groove
formed in the said table or bed or other convenient part of the said machine or
object and secure the said cramp or clamp thereto.
When either of the cramps or clamps illustrated in the accompanying drawings
is in use the plate (b) upon the movable jaw (b) of such cramp or clamp is made
to bear upon the article or object to which such cramp or clamp is intended to be
applied, while the tooth (6) of such iaw is placed in or made to bear against any
convenient one of the notches or teeth of the bar or rod (a) with which it is used
and the screw (c) inserted in such jaw is turned so as to bear against the back of
the said har or rod (a) and press the part (6) of the jaw (b) through which it is
screwed away from the bar or rod (a) and so cause the plate (6) mounted upon
such jaw (6) to bear more firmly upon the said article or object until such article
or object is held with the firmness requisite.

page_text: Instead of being formed with a jaw (a³) of the form illustrated in Figs. 2 and 3
the bar or rod (a) of a cramp or clamp of the type illustrated in Figs. 1, 2 and 3
may be formed or provided with a jaw of any other form which it may be desirable
to provide in the formation of a cramp or clamp for any particular purpose.
Instead of being provided with a base provided with one stud (a), the bar or
rod (a) of a cramp or clamp of the type illustrated in Figs. 4, 5 and 6 may be
formed with a base provided with two screwed studs or may be provided with a
base provided with a set-screw or set-screws or a bolt or bolts by means of which
it may be secured to the bed or table or other convenient part of the machine or
object to which the cramp or clamp may be intended to be applied or be adapted
to be mounted or screwed in any other suitable manner in the table or bed or other
part of the machine or object to which such cramp or clamp may be intended to
be applied.
Each screw (c) illustrated in the accompanying drawings being passed through
a part (6) of the jaw (6) in which it is mounted which is directed away from the
end of the bar or rod (a) which is provided with the terminal projection (a) and
being formed with a handle (e) of a radius less than the distance which separates
the axis of such screw (c) from the end (*) of the bar or rod (a), when the
tooth (3) of the said jaw (6) is in the notch adjacent to the terminal projection (a*),
does not project beyond the said end (a) of the bar or rod (a) when the cramp or
clamp in which it is used is in use and so the said screw (c) can not interfere with
the convenient operation of any machine in which such cramp or clamp may be
used.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what
I claim is:-
.
1. A cramp or clamp, consisting of a bar or rod formed or provided with a fixed
jaw to bear against any object to which the cramp or clamp may be required to
be applied, and also formed with notches or teeth throughout a convenient portion
of its length and a movable jaw which is formed so that it may fit upon, embrace
or surround the said bar or rod and be moved into different positions thereon
and be made to engage by means of a tooth with any of the notches or teeth of
the said bar or rod and is provided with a screw capable of being turned by means
of a handle or key and when turned in one direction made to bear against the bar or
rod aforesaid and turn the said movable jaw about the tooth or part of the said rod
against which such movable jaw may bear and so press against the object to which
the cramp or clamp is to be applied the part by nieans of which the movable jaw
is intended to bear against such object, constructed, arranged and operating for
the purposes and substantially in the manner herein before described and illustrated
by Figs. 1, 2 and 3 of the accompanying drawings.
2. A cramp or clamp consisting of a bar or rod which is formed with notches or
teeth throughout a convenient portion of its length and is provided with a screwed
stud or projection and nut or screwed studs or projections and nuts ora set screw
or set screws or with a bolt or bolts or otherwise adapted to be mounted or screwed
in the table or bed or other convenient part of a planing machine or other machine
or object to which the said cramp or clamp may be intended to be applied and a
movable jaw which is formed so that it may fit upon; embrace or surround the
said bar or rod and be moved into different positions thereon and be made to
engage by means of a tooth with any of the notches or teeth of the said bar or
rod and is provided with a screw capable of being turned by means of a handle or
key and when turned in one direction made to hear against the bar or rod afore-
said and turn the said movable jaw about the tooth or part of the said rod against
which such movable jaw may bear and so press against the object to which the
cramp or clamp is to be applied the part by means of which the movable jaw is
intended to bear against such object, constructed arranged and operating for the

page_text: purpose and substantially in the manner hereinbefore described and illustrated
by Figs. 4, 5 and 6 of the accompanying drawings.
Dated this Fourteenth day of September 1897.
HOWARD CHEETHAM
Manchester, Agent to the Applicant.