IMPROVEMENT IN MITRE CRAMP
Year: 1884

page_text: THOMAS JAMES SYER 1 Finsbury Street Chiswell Street London, in the Parish
of St Lukes Middlesex do hereby declare the nature of my invention for
IMPROVEMENT IN MITRE CRAMP to be as follows:-
I obtain my object in the following mannor I make the Bed Plate & sides &
screw & travelling nut with triangular plate attached all of Iron or other metal
& line the inside of sides with wood to prevent indentation of the work held in
same. The Triangular Plate C works & moves upon the screw D & travels the
whole width of Plate A in groove E & screw D is worked by handle F to use
the Cramp place 2 mouldings upon Bed Plate A & against the wood sides B
having first cut the joints to be made, then turn the handle F from left to right
which will in its turn, move the triangular Plate forward & press same against the
moulding, hold it firmly & ready for the process of nailing or otherwise fastening
the mitre joint the princepal novelty is, that while pressing against the sides of
moulding it at the same time draws the mitrod joint close.
Dated this 3rd day of March 1884

page_text: I THOMAS JAMES SYER Tool Dealer and Cabinet Manufacturer of 1 Finsbury
Street Chiswell Street in the Parish of Saint Lukes and in the county of Mid-
dlesex do hereby declare the nature of any invention for IMPROVEMENTS IN MITRE
CRAMPS and in what manner the same is to be performed, to be particularly
described and ascertained in and by the following statement:-
Refering to the drawings filed herewith I make a bed plate marked D of metal,
having two movable sides B, each working upon pivots H, and both of which are
capable of being sloped either inwards or outwards as may be necessary, to fit.
against the moulding or other material placed therein; upon these movable sides
are mounted cheeks of wood to prevent indentation of the work or moulding when
secured, the movement of these sides is produced by the Spindle marked C, these
spindles are fitted with increasing cones on shaft J, having a screw at one end and
a thumb screw wheel at the other, by turning this thumb screw wheel in either
direction, the cones marked J, are either pushed forward or drawn backward as the
case may be, to or from the lugs on sides and marked K which latter in their turn
press outward or allow the sides to come inward as may be neccesary, the movable
sides B are kept in position by means of a spring G of either a flat or helical form,
the nut or slide A moves horizontally along the bed plate D, and is triangular in
shape at top, and is worked by Screw E, forward or backward as may be required
the moulding or other material to be held is first placed upon the bed plate D, and
against one of the movable side cheeks, F which latter are moved and made to fit
against the outer edge of the moulding or other material, after this is done I place
the two pieces to be joined upon the bed plate D, and then turn the handle of
screw E which movement presses forward the sliding nut A against the inner or
rebated edge of the moulding or other material, thus securing same in vice form.
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 in the construction of a Mitre Cramp,
1st A triangular plate affixed to sliding nut on screw E.
2nd Wood inner cheeks on sides, instead of metal.