A New or Improved Clamp or Cramp for Joiners and the like.
Year: 1898

page_text: Date of Application, 4th Mar., 1898-Accepted, 9th Apr., 1898
COMPLETE SPECIFICATION.
A New or Improved Clamp or Cramp for Joiners and the like.
HENRY SMITH, of 31, Denmark Road, Ealing, in the County of Middlesex,
Carpenter, and REUBEN JOHN COOPER COLLINS, and PATRICK O'DONNELL, both of
18, Featherstone Buildings, London, W.C., Patent Brokers, 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:
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Our invention relates to a new or improved clam or cramp for joiners, carpenters,
picture frame makers, amateur joiners, household purposes and for the many
trades where a simple, strong and cheap clamp or cramp is required.
Our improved clamp or cramp may be used to hold wooden or other pieces of
various sizes according to requirements. The same consists of two jaws, an lower
fixed and an upper moveable jaw. A screw bolt passes through openings formed
in the two jaws and in a locking piece, so that its head bears against the underside
of the fixed jaw. The latter is provided at its other end with a groove or recess
wherein enters the lower end of a metal guide bar secured to this jaw by a couple
of rivets, in such a manner as to be allowed a certain amount of play in this recess;
this bar passing likewise through the upper jaw and being provided with a series
of holes formed at equal intervals to receive a pin designed to fix the position of
the moveable jaw and connected by a chain or cord to a ring or staple fixed into
the upper jaw.
The accompanying drawing is a full size view of our improved clamp or cramp.
jis the fixed and the moveable jaw. s is the screw bolt passing through the
jaws jj and the locking piece or cleat c furnished centrally with a metal tapped
ring or bush o. b is the metal guide-bar secured by rivets in the recess r formed
in the lower or fixed jaw j in such a manner as to be allowed a certain amount of
play therein, and provided with a vertical row of equi-distant holes / wherein is
placed the pin p secured by the cord or chain a to the staple g fixed to the upper-
jaw . In the drawing the clamp is shown in use being tightly fixed in position
to hold a block or bar of wood d; the cleat c being tightly screwed upon the upper
jaw and the pin p being placed through the corresponding hole of the guide-bar b
so as to support the free end of the moveable jaw. The jaws may be made of wood
or of metal. The clamp can be made of any size so as to take pieces of any desired
thickness between its two jaws.
Having now particularly described and ascertained the nature of our invention
and in what manner the same is to be performed we declare that what we
claim is:-
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1. A clamp or cramp for joiners, carpenters and the like, consisting of a fixed
jaw and of a moveable jaw capable of sliding on a screw bolt and on a perforated
vertical guide-bar secured to the said fixed jaw, the upper or movable jaw being

page_text: secured in position when in use by a pin and a locking piece or cleat, substantially
as herein described and shown.
Dated this 4th day of March 1898.
HENRY SMITH.
REUBEN JOHN COOPER COLLINS.
PATRICK O'DONNELL.