Improvements in Adjustable Wrenches or Spanners.
Year: 1897

page_text: Date of Application, 2nd July,
Completo Snorifination Loft 20th Mor 1900
1007
Accented
40th Mov 1000
Complete Specification Loft, 20th Mor, 1808
Accepted, 20th May,
1900
PROVISIONAL SPECIFICATION.
Improvements in Adjustable Wrenches or Spanners.
I, JOIN WOODWARD, of 4, St. Ann's Square, Manchester, in the County of
Lancaster, Consulting Engineer; do hereby declare the nature of the said inven-
tion, to be as follows:-
My invention relates to and consists in an improved combination of a strong
and simple construction of adjustable wrench or spanner, which can be readily
made of steel or other suitable metal mainly by the stamping process.
The fixed jaw of the wrench and the handle, are formed in one piece, with a hole
drilled through it for the screwed stem of the movable jaw, and with a notch
formed for a round milled screw nut through which the screwed stem of the
movable jaw screws, the movable jaw being in one piece with its screwed stem.
The metal round the drilled hole in one part is cut away partly to allow the
movable jaw to slide in and out to adjust the jaw and when in use the strain is
sustained by the back of the movable jaw coming against the side of the drilled
hole not cut away and against the milled screw nut, the opposite side of the screwed
stem coming against the drilled hole below the fixed jaw.
The movable jaw cannot fall out, and if desired there is or may be a stop to
prevent the movable jaw being opened wider than is intended, which stop may be
a screw screwing into a tapped hole in the axis of the screwed stem of the movable
jaw, the head of this screw fitting an enlargement of one part of the drilled hole for
the screwed stem, or other means may be used. In some cases the wrench may be
made double ended, one end to suit one range and the other to suit another range
of sizes.
Improvements in Adjustable Wrenches or Spanners.
I, JOHN WOODWARD, of 4, St. Ann's Square, Manchester, in the County of
Lancaster, Consulting Engineer, 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 invention relates to and consists in an improved combination of a strong
and simple construction of adjustable wrench or spanner, which can be readily
made of steel or other suitable metal mainly by the stamping process.
The fixed jaw of the wrench and the handle, are formed in one piece with a hole
drilled through it for the screw stem of the movable jaw, and with
CD 11
a notch

page_text: formed for a round milled screw nut through which the screw stem of the
movable jaw screws, the movable jaw being in one piece with its screwed stem.
The metal round the drilled hole in one part is cut away partly to allow the
movable jaw to slide in and out to adjust the jaw and when in use the strain is
sustained by the back of the movable jaw coming against the side of the drilled
hole not cut away and against the milled screw nut, the opposite side of the screw
stem coming against the drilled hole below the fixed jaw.
The movable jaw cannot fall out, and if desired there is or may be a stop to
prevent the movable jaw being opened wider than is intended, which stop may be
a screw screwing into a tapped hole in the axis of the screwed stem of the movable
jaw, the head of this screw fitting an enlargement of one part of the drilled hole for
the screwed stem, or other means may be used. In some cases the wrench may be
made double ended, one end to suit one range and the other to suit another range
of sizes.
Fig. 1, is an outside flat view of the wrench with the movable jaw opened to its
fullest extent.
Fig. 2, a view in the same plane as Fig. 1, with the movable jaw closed to its
smallest extent and showing the jaw which is solid with the handle and part of
the handle and the screw nut in section.
Fig. 3, is an edge view looking at the loose jaw edge.
a is the handle forming a part of the fixed jaw a¹.
This part has a hole b, drilled through it just large enough to give clearance to
the exterior of the threads of the screwed part of the stem c¹, of the movable
jaw c, to pass and move to and fro.
The upper part of the metal at a², is cut away to allow the movable part of the
jaw c, to slide between the sides thus left which form a guide to prevent the
movable part of the jaw from turning and thus keeping it parallel with the fixed
jaw laterally.
There is also a slot a³, cut out of the handle part close to one side of the fixed
jaw a¹, for a milled edge screw 6', through which the screwed stem c, of the
movable jaw c, screws. The sides of the screw nut 6', fit the slot, and thus prevents
the movable jaw c, from changing its position when strain is applied in turning
a screw nut, and this jaw c, can only be altered in position by rotating the screw
nut b¹.
Any convenient method may be used to prevent the stem c¹, of the movable
jaw c, from being screwed out of the nut b', the simplest method is by damaging
or distorting part of one thread of the screwed stem as at c, Fig. 2, by a centre
punch or other means, so that it will not pass into the screw nut b³, as the screwed
stem c¹, need never be screwed out of the screw nut, but if required at any time
to do so, the distorted part of the screw thread can be readily filed away so as to
pass through the screw nut.
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:-
The combination of the handle and the fixed jaw with the movable jaw and the
screw nut, substantially as and for the purpose hereinbefore described and illus-
trated by the drawings.