Improvements in and connected with Gripping and like Tools.
Year: 1897

page_text: PROVISIONAL SPECIFICATION.
Improvements in and connected with Gripping and like Tools.
I, JOHN MICHAEL EURELLE, of 59 Great Brunswick Street, Dublin, Ireland,
Wine Merchant, do hereby declare the nature of this invention to be as follows:-
These improvements have for their object securing a better grip between tools
such as spanners wrenches and similar contrivances and the objects such as nuts
bolts, pipes, sockets, or other articles to be gripped by such tools, and the invention
consists in furnishing such objects with one or more grooves, studs ribs, either or
all, into and on or over which corresponding projections or indentations or both
formed on the tools may enter or embrace and thus afford better gripping surfaces.
Dated this 28th. day of January 1897.
HERBERT HADDAN & Co. ·
Agents to Applicant.
Improvements in and connected with Gripping and like Tools.
I, JOHN MICHAEL EURELLE, Wine Merchant, of 59 Great Brunswick Street,
Dublin, 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:-
These improvements have for their object securing a better grip between tools
such as spanners, wrenches and similar contrivances and the objects such as nuts
bolts, pipes sockets or other articles to be gripped by such tools, and the inven-
tion consists in furnishing such objects on their gripping faces a groove or rib
into or over which corresponding projections or indentations formed on the tools
may enter or embrace and thus afford better gripping surfaces as herein before more
particularly described.
In the annexed drawing Fig 1 is an elevation and Fig 2 a plan of a ribbed nut,
Fig 3 is elevation showing the jaws of a spanner for such nut. Fig 4 is an eleva-
tion and Fig 5 a plan of a grooved nut and Fig 6 an elevation showing the jaws
of a spanner for the latter.
A represents a nut having in the centre of each if its faces parallel with its
axis either a rib B or a recess C. The spanner made to fit the same as in the face
of its two jaws either recesses I or ribs E corresponding to the ribs B or recesses
C respectively. Bolt heads, pipes, sockets and the like having to be turned by a
spanner or keys are likewise made with same exterior form as that of the nuts
illustrated in the drawing and will therefore need no further illustration.
.

page_text: Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is:-
The improvements in and connected with gripping and like tools consisting
in forming the nuts, bolt heads, pipes, or sockets or the like rotary devices with
flat faces having parallel with their axis of rotation symmetrically placed ribs or
grooves substantially as herein described, their respective keys or spanners having
in their flat faces corresponding grooves or ribs in order that the latter grooves
or ribs may engage with the ribs or grooves aforesaid and assist the grip or engage-
ment of the flat faces of the keys or spanners, the whole substantially as set forth
and illustrated in the annexed drawings.
HERBERT HADDAN & Co.
Agents to applicant,
. 18, Buckingham Street, Strand, London.