Year: 1887

page_text: Date of Application, 24th Sept., 1887
Complete Left, 25th June, 1888
Complete Accepted, 27th July, 1888

page_text: An Adjusting Nut Spanner or Wrench.
I, LOUIS COOPER, 69 Vine Street, Coventry, in the County of Warwick, do hereby
declare the nature of this invention and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement:
This invention has for its object a new or improved adjustable spanner for holding
or turning bolts, nuts and the like, which shall be compact, light, strong, quickly
adjustable to different sized objects, and at the same time comparatively cheap and
simple in construction.
It can be best described by reference to the accompanying sheet of drawings.
Figure 1, represents a front elevation of a spanner made according to this
invention.
Figure 2, a longitudinal section in a plane at right angles to Figure 1.
Figure 3, an elevation of the reverse side of spanner.
Like letters of reference indicate like parts in all the Figures.
A is the frame-work of the spanner. The inner edge of one end of this frame
forms the fixed jaw B of the tool. This edge I prefer to thicken as shown at a in the
drawings as it adds to the strength where most needed, besides giving a greater holding
surface to bear against the faces of the nut or bolt.
The opposing or movable jaw B₁ is of the same thickness as tho jaw B except where
cut away or recessed, to make room for the spacing or adjusting disc D, hereinafter
described. The jaw B₁ is retained in position within the frame A, on the one hand,
by projections formed in one with, or rigidly attached to the jaw, and on the other
hand by a back plate C, which is preferably rivetted to the jaw B₁ as shown at c. Tho
jaw B is thus freed to slide up or down, in the frame A so that the spanner can bo
applied to different sized nuts or bolts.
One or both of the projections is extended beyond the edge of the frame A, at
which point it is enlarged and thickened so as to form a second movable jaw B² of the
same thickness as the jaw B¹. The back plate is also extended behind the jaw B²
and is attached thereto, preferably by a rivet U. The frame A is also, extended so as
to form a second fixed jaw B³ opposite the jaw B². By this arrangement an object
may be gripped by the open side jaws B2 B³ in cases where the enclosed jaws B B¹
would be unsuitable.
The jaws B and B are preferably adapted to fit upon opposite angles of a hexagonal
nut, while the jaws B2 B3 are formed with parallel faces so as to fit against opposite
sides of a nut of any shape having parallel sides.
To maintain the jaw B in any required position, an indented wheel or disc Dis
provided. This is formed large enough to prevent its falling through the slot in the
frame A upon which it slides. A large flat boss d is formed upon the back of disc D
and this boss slides longitudinally in the slot in the frame A. The disc D and boss d
are pivoted to the plate C, by means of a projecting stud, d¹, a washer d² being

page_text: preferably inserted between the enlarged end of the stud d' and the plate C. The
movable jaw B', plate Cand disc D are thus united and slide together on the frame.
The peripheries of the disc D and boss d bear against the under side of the jaw B¹
which for this purpose preferably made of a circular contour. The frame A is
provided at the end remote from the jaw B, and preferably in or near the axis of the
tool, with a projecting pin E, the top edge of which is adapted to fit into the various
indentations or notches d³ in the edge of the disc D. These indentations are of
different lengths, and the deeper ones are also, where necessary, continued through
the boss d. Each indentation may have a Figure or dimension stamped or marked
near it to show the size of opening to which the spanner is adjusted when such inden-
tation is in use. The handle F of the spanner, which is preferably formed integral
with the frame A, may be provided with an additional hole G, for turning nuts and the
like, or for the purpose of hanging up the tool when not in use.
I prefer the frame A and plate to be blacked or lacquered, and the rest of the
tool may be nickel plated. The mode of action is as follows
To adjust the jaws of the spanner to a given nut or bolt, the movable jaw B' and
with it the disc D and plate Care slid close up to the fixed jaw, the disc D is then
rotated till the proper slot ³ comes opposite the pin E. It is then slid back, till
the top of pin E, coming against the end of slot d³ prevents it from opening any
further. The spanner is then ready for use. It is obvious that the tool will fit as
many different sized nuts or bolts as there are indentations in the disc D. Also the
position of the jaws B2 B3 relative to the jaws B B¹ may be such, that one pair of jaws
is adapted to fit objects, having sizes intermediate with the sizes of the objects to which the
other pair may be adjusted. And further, the relative position of the jaws B' and B³
may be such, that they may be brought close together, so as to fit much smaller
objects than the jaws B B are capable of fitting.
Having now particularly described and ascertained the nature of the said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is
1. An adjustable spanner, consisting of a suitable frame provided with a handlo and
one or more fixed jaws, an equal number of opposing movable jaws sliding in or upon
the said frame, a fixed pin or projection E upon the frame, and a sliding rotatable disc
such as D interposed between the said pin or projection and the movable jaw or jaws,
and having a series of radial indentations of different depths, each of which is adapted
to receive the said pin or projection, substantially as and for the purpose described.
2. In combination with a spanner having a sliding jaw or jaws, a notched or indented
adjusting disc such as D, bearing with one edge against the back of said jaw or jaws,
and a fixed abutment on the spanner in proximity to the opposite edge of the disc,
and adapted to bear against the bottom of any one of the notches or their equivalents
in the said disc, substantially as set forth.
3. In a spanner, the combination of frame A, a movable jaw or jaws sliding in or
upon the said frame, a retaining plate C secured to said jaw or jaws, and bearing
against the reverse side of the spanner, and a rotatable adjusting disc D, pivoted on
said plate and bearing against the back of said jaw or jaws, substantially as and for
the purpose set forth.
4. The adjustable spanner or wrench, substantially as described and shown.
WM. P. THOMPSON & Co.,
Of 6, Lord Street, Liverpool,
Patent Agents for the Applicant.