Improvements in wrenches.
Year: 1895

page_text: Date of Application, 11th Feb., 1895
Complete Specification Left, 11th Nov., 1895-Accepted, 14th Dec., 1895
Improvements in wrenches.
1 JOHN KEMP STARLEY of The Meteor Works Coventry in the County of
Warwick Cycle Manufacturer do hereby declare the nature of this invention to
be as follows:-
This invention has for its object an improved method of constructing adjustable
wrenches and particularly relates to the manner in which the sliding or guiding
portion of the wrench, in which the moving part of the jaw works, is formed.
Hitherto the moving or sliding portion of the jaw has been made to work or
travel through a hole or slot cut or formed entirely through the body of the handle
of the wrench, such construction being more difficult and costly than that which I
propose to adopt.
Instead of the hole or socket being as above described I cut out or form on one
side of the flat of the jaw end of the wrench transversely to same or at right
angles or nearly so if preferred with the face of the jaw preferably a V shaped
or dovetailed groove or slot of a suitable depth such dovetailed groove or slot
being formed out of the true with the handle portion of the wrench by which
means I am enabled to form such groove or slot tapered leaving it thickest at the
point at which the fixed jaw is formed on the handle of the wrench and to enable
the sliding portion of the jaw to be left thicker at the point at which the other
portion of the jaw is formed проп it.
By cutting the slide or groove on one side of the handle of the wrench and
cutting it so as to form a taper on the fixed portion of the jaw I am enabled to
make a wrench much stronger than when the slot is cut true with the handle
portion of the wrench or when such sliding portion and socket are shaped true
and square.
It is obvious that the jaws may be formed either true or tapered from the portion
of the jaw which engages the nut in an opposite direction if desired.
Dated this 11th day of February 1895.
POPPLEWELL & Co.,
Agents for the Applicant.
1, JOHN KEMP STARLEY of The Meteor Works, Coventry, in the County of
Warwick, Cycle 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 specification:
:-
My invention has for its object an improved construction of adjustable wrench
of the kind in which a fixed and a movable jaw are employed, and relates
particularly to the formation of the sliding and guiding portions of the wrench
whereby I can obtain greatly increased strength, that is to say, about double the
strength of the fixed jaw at the jaw end, and about double the strength of the
sliding jaw at the other end.

page_text: I accomplish this by using a tapered sliding portion, and cut the groove in
the handle on an angle to receive it. I have indicated the method of construction
on the two accompanying sheets of drawings, on which
Figure 1 is a side view of a spanner constructed according to my invention.
Figure 2 is an end view of the jaw end of wrench.
Figure 3 is a plan of Figure 1 from above, and
Figure 4 is a similar plan from below, but with the sliding jaw removed.
Figures 5, 6, 7 and 8 show different views of the sliding and tapered jaw
piece.
Figure 9 is similar to Figure 1, but with the sliding jaw piece omitted.
Figure 10 is a reverse view of part of Figure 1.
Figures 1, 2, 3, 4 and 8 are repeated on Sheet 2, being here shown in connection
with a spanner of slightly modified shape, and which I prefer to employ in the
larger or heavier kinds.
1 cut out or form on one side of the flat of the jaw end of the wrench A and
transversely to same (preferably) a V shaped or dovetailed groove or slot B of
suitable depth and usually as shewn clearly by Figure 4.
This groove or slot is cut or formed "out of the true "with the handle portion
of the wrench by which means I am enabled to form such slot or groove tapered so
leaving the metal thickest at the point at which the fixed jaw C is formed on the
handle of the wrench, and to enable the sliding portion of the jaw D, Figures 5, 6,
7 and 8 to be left thicker at the point D¹ at which the other portion of the jaw is
formed upon it, or,.
I may form such slot true with the handle portion and thicken
out the jaw pieces in order to form such taper.
One edge of the sliding portion of the jaw is serrated or racked as at D²,
Figures 5, 6 and 7, and engages with the wrim serew E in the usual manner for
the adjustment of the jaws, or, other suitable means for adjustment may be
employed. By cutting the slide or groove B on one side of the handle of the
wrench and entting it so as to form a taper on the fixed portion of the jaw I am
enabled to make a much stronger wrench or spanner than where the slot is cut true
with the handle portion of the wrench or where such sliding portion D and
socket B are shaped true and square.
Having now particularly described and ascertained the nature of my said inver-
tion and in what manner the same is to be performed, I declare that what I
claim is
1. Constructing adjustable wrenches or spanners with a tapered sliding jaw
piece such as shown by Figures 6 and 8 and a groove or guiding channel in which
said sliding jaw piece slides as herein before described.
2. The combination of a wrench handle having a flat fixed jaw such as C, and
a dovetailed tapered groove cut on the face thereof with a sliding and tapered
loose jaw piece such as D, Figures 6 and 8, as and for the purposes described.
3. The improved construction of wrench or spanner substantially as hereinbefore
described and illustrated by the accompanying drawings.
Dated this 11th day of November 1895.
STANLEY POPPLEWELL & Co.,
7 & 8 Southampton Buildings, Chancery Lane, London, W.C.,
Agents for the Applicant.