Improvements in Adjustable Screw Keys or Spanners.
Year: 1895

page_text: Date of Application, 31st July, 1895
Complete Specification Left, 25th Apr., 1896-Accepted, 30th May, 1896
Improvements in Adjustable Screw Keys or Spanners.
1 EDWARD TILSTON of 2 Bates Street, Birch Lane, Longsight, Manchester,.
Mechanical Draughtsman, do hereby declare the nature of this invention to be as.
follows:
My said invention relates to improvements in the screw keys or spanners
described in the Specification of my Patent No. 11358 of A.D. 1894 hereinafter
referred to as my former invention.
According to my present invention I construct an open jawed adjustable spanner
by so forming the plate of my former invention as that the longitudinal slot (which
receives the nut and screwed stalk of the loose jaw) is open at one side to enable it.
to take sideways on to a nut or bolt.
The loose jaw is held to the main plate by a sliding strap plate or collar.
A further part of my said invention relates to the formation of the plate to form
a pin spanner. One end of the main plate is thinned or recessed by milling stamping
or otherwise and in the said thinned part are inserted the pins.
Dated this 30th dor of Inle 1805
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.
I EDWARD TILSTON of 2 Bates Street, Birch Lane, Longsight, Manchester,
Mechanical Draughtsman, 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 :-
My said invention relates to improvements in the screw keys or spanners described.
in the Specification of my former Patent No. 11358 of A.D. 1894.
According to my said invention described with reference to the accompanying
drawing I construct an open jawed adjustable spanner by so forming the plate a as
that the longitudinal slot b is open at one side to enable it to take sideways on to a
nut or bolt.
Referring to Fig. 1 c is the loose jaw which is held to the plate a by means of
the sliding strap plate or collar e. Secured to the loose jaw c and lying in the
lengitudinal slot is a screwed stalk e having a rotatable nut d engaging therewith..
The rotatable nut d lying in the transverse slot in the metal plate bears against
the fore or rear edges of the slot when rotated for advancing or retiring the loose
jaw c.
A further part of my said invention relates to the formation of the plate to form.
a pin spanner. The mode of application of this part of my said invention may be
varied according as a fixed or adjustable pin spanner is to be formed. In the
former case one end of the plate a is thinned or recessed by milling stamping or
otherwise as shown at a' in Fig. 1 and to the thinned part the pins are applied.
In case it is desirable to make the distance apart of the pins adjustable a pin is

page_text: mounted on each jaw of the spanner as at f¹ in Fig. 2 the jaws being thinned if
necessary.
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. An adjustable open jaw spanner consisting of a flat plate a (which forms at
the same time a handle and a fixed jaw) having an open laterally enlarged slot bin
combination with a screwed stalk c' and nut d operating the sliding jaw c substantially
as set forth and shown.
2. The combination with a spanner or screw key such as described of pins ƒ or ƒ¹
substantially as and for the purpose set forth and shown.
Dated this 20th day of April 1896.
E. T. WHITELOW, A.M. Inst. C.E.,
70 Deansgate, Manchester, Agent for the Applicant.