An Improvement in the Manufacture of Implements, Tools, and such like, whereby the Handles are made very Secure and Durable.
Year: 1892

page_text: Date of Application, 30th Dec., 1892
Complete Specification Left, 17th June, 1893-Accepted, 29th July, 1893
PROVISIONAL SPECIFICATION.
An Improvement in the Manufacture of Implements, Tools, and
such like, whereby the Handles are made very Secure and
Durable.
FRANCIS LYST 64 Somerville Road Hatcham London S.E. Gentleman do hereby
declare the nature of this invention to be as follows:-
In forging or casting these tools &c. the part which is to fit in the handle is made
round with a raised thread on its surface; which thread turns one and a half times
round the handle part, so as to form a long screw. The handle part so fashioned is
then galvanised, after which these tools can be tempered if required. The wood or
other handle is driven on, whilst being driven it turns one and a half times round to
adapt itself to the screw.
The screw holds the tool fast in the handle and prevents it falling out
during use.
The screw, being long, does not interfere with the elasticity of the wood, and does
not injure it in any way.
The galvinizing prevents the tool becoming loose in the handle through rust.
Dated this 29th day of December 1892.
FRANCIS LYST.
COMPLETE SPECIFICATION.
An Improvement in the Manufacture of Implements, Tools, and
such like, whereby the Handles are made very Secure and
Durable.
I, FRANCIS LYST of 64 Somerville Road, Hatcham, in the County of Surrey,
Gentleman, 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:-
This invention relates to the tang or shank of ordinary hand tools, and is designed
to prevent their becoming separated from their handles when in use.
To effect this I form around the tang a spiral thread or web, which being thin on
its outer edge, will readily cut for itself a groove or channel in the wood of the
handle.
I will now describe the invention with reference to the accompanying drawings
in which
Fig. 1 shews a plan of a file and
Fig. 2 shows a bradawl with my invention applied to the tang.
a is the tang which is by preference made round and taper. 6 is the raised thread
or web.
It will be readily understood that any tool so formed can be pulled back by the
handle without any fear of the handle coming off, while if it is desired to remove
the handle, it is easily taken off by turning the handle the reverse way to the pitch
of the thread, while the tool is held stationary.
When forging or stamping the blank for the tool, the thread can be easily formed
while the metal is hot, by using a suitable die.
The spiral thread will be of varying size according to the size of the tool, and
will diminish as it approaches the pointed end of the tang.
The handle can be driven on in the usual way, and whilst being driven will turn
round to accomodate itself to the pitch of the thread.

page_text: Before being hardened or tempered the tang can if preferred be galvanized to
prevent rust.
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:
1: A raised spiral thread of long pitch, winding round the tang of a tool or
implement for the purpose of better securing the handle thereto, as herein described
and set forth.
1000
S. S. BROMHEAD,
97, Newgate Street, E.C., Patent Agent.