A Chisel for Cutting Stone, Iron, Wood, and other Substances.
Year: 1896

page_text: Date of Application, 6th Feb., 1896
Complete Specification Left, 27th Oct., 1896-Accepted, 28th Nov., 1896.
PROVISIONAL SPECIFICATION.
A Chisel for Cutting Stone, Iron, Wood, and other Substances.
JONATHAN DRANSFIELD Gas Hook Manufacturer Royston near Barnsley-
Yorkshire do hereby declare the nature of this invention to be as follows:-
A socket or holder made from steel or iron with a slitt or socket grove at one
end forming two jaws through which is inserted a set screw or bolt to draw the
jaws together so as to hold a thin steel blade for cutting. The blades are supported
with the jaws of the holder near to the cutting edge and when the blades are worn.
down to the jaws of the holder they are taken out and inserted into other holders.
with shorter jaws until the blades are worn up.
Dated this Fifth day of February 1896.
A Chisel for Cutting Stone, Iron, Wood, and other Substances.*
I, JONATHAN DRANSFIELD, of Royston, near Barnsley, in the County of York,
Gas Hook Manufacturer 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:-
DESCRIPTION OF DRAWINGS.
Fig. 1 is a side elevation of my invention consisting of the holder with its jaws..
Fig. 2 is a front elevation of a modification of my invention shewing jaws of
holder separate therefrom and the screw dispensed with.
Fig. 3 is an end elevation of Fig. 2.
Fig. 4 shows a detached view of loose jaw E with groove or recess for carrying
the blade.
Fig. 5 shews view of both jaws and blade.
A is the blade or cutting portion of the tool, B is the handle or holder made of
steel iron or other suitable metal having slit C, and broader slit or groove D the
metal at each side of which form the jaws E and E¹ for holding the thin steel.
blade A by means of screw such as F.
Or the jaws E and E¹ may be formed distinct from the holder B the jaw E.
having the groove D against the ledge of which the steel blade A abuts, the
central projection H being a guide to prevent its slipping or working out of
position, K is a guide pin fitting into the corresponding hole L for keeping the
jaws in position. The jaws when placed together with the blade between them.
wedge into the taper recess in the holder and are released therefrom by inserting a
round steel wedge into the hole J which ejects them so releasing the steel cutting.
blade, the cutting blade is thin and nearly uniform in thickness can be readily
hardened and a great saving is effected in time, labour and cost of renewal when
worn down. The shortness of the jaws in the tool holders may vary so that when.

page_text: the blades are worn down to the jaws of one holder they may be changed to holders
with shorter jaws and worn still further.
The width and length of the blades vary according to the nature of the work
they are required for.
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:
A chisel constructed with blades such as A, holder B, fast or loose jaws E,
and E', with ledge or groove D for blade, secured either by screw F, or by wedging
the jaws into the recess of the holder, substantially as shown and described.
Dated this 21st day of October 1896
JOHN E. WALSH,
Patent Agent, Royal Exchange Chambers, Boar Lane, Leeds,
Patent Agent to the Applicant.