Year: 1887

page_text: Date of Application, 19th Mar., 1887.
Specification Accepted, 19th Apr., 1887.
HENRY HARRIS LAKE of the firm of Haseltine Lake & Co. Patent Agents,
Southampton Buildings, in the County of Middlesex do hereby declare the nature of
this invention and in what manner the same is to be perforined, to be particularly
described and ascertained in and by the following statement :-
This invention relates to improvements in adjustable wrenches of which the
following is a description
In the accompanying drawings
Figure 1, is a plan view partly in section of a wrench embodying this invention the
front face of the sliding frame and jaw being removed and the spiral spring shown in
position in the recess of the solid jaw.
Figure 2 is a view of the wrench with the sliding frame complete, and showing the
corresponding V shaped slots in the solid jaw and the head, the said slot when closed
together forming a diamond shaped opening.
A is the main bar having a double fixed head C forming upper jaws on either side.
G is a sliding frame having jaws on each side of the bar A to meet those on head C.
B is a solid jaw having small recess for a spiral spring E to work in and D, D, are
V-shaped slots cut in jaw B, and head C to form a diamond shaped opening when
jaws are closed together.
The first part of this invention comprises the combination in an adjustable wrench
having a head C forming grips or jaws on either side of main bar A, of a sliding
frame prevented from giving way, when the wrench is being used, by the thumb
screw H, which screws easily up and down a screw thread cut in the bar A; and
having the jaw B solid, with a sinall recess F to receive the end of the spiral spring E,
thereby greatly increasing the strength of this class of tool in its present weakest
point.
The second part of this invention comprises the combination in an adjustable wrench
having a solid jaw B, of a spiral spring E placed in the recess F formed in the solid

page_text: jaw B with its outer end impinging upon the bar A with an outward pressure, thereby
keeping the frame G from slipping, while the thumb screw H is moved up to keep in
position.
The third part of this invention comprises a combination in an adjustable wrench
having sliding frame G, spiral spring E, solid jaw B, of a V shaped slot D cut in the
jaw with a corresponding slot D of the same size and shape in the head C the said
slots forming, when the jaws are shut close, a diamond shaped opening.
Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my foreign
correspondent I declare that what I claim is ;
First. The combination in an adjustable wrench, of a moving frame G secured by
thumb screw H and spiral spring E in jaw B, operating substantially as described.
Second. The combination in "an adjustable wrench having moving frame G and
spiral spring E of corresponding slots cut in jaw B and head C with a solid jaw B
substantially as described.
Third. In combination with an adjustable wrench having the moving frame Ga
spiral spring E operating within the recess F in jaw B substantially as and for the
purpose described.
Fourth. In an adjustable wrench the combination with the spiral spring E in the
recess Foperating on the bar A of a solid jaw B, substantially as and for the purpose
described.