An Improved Adjustable Spanner.
Year: 1897

page_text: Date of Application, 7th May, 1897
PROVISIONAL SPECIFICATION.
An Improved Adjustable Spanner.
I, SAMUEL WATERS of 30° Grosvenor Road, Tunbridge Wells, in the County of
Kent, Decorator, do hereby declare the nature of this invention to be as
follows:-
This invention relates to spanners of the kind that are provided with a fixed and a
movable jaw piece, and means for adjusting the movable, in relation to the fixed jaw
piece, so that the spanner is capable of fitting any sized nut.
To carry out my invention, I provide an elongated narrow plate or blade cranked at
one end to form the fixed jaw piece, one side of the plate or blade being toothed or
serrated to form a roughened surface. The movable jaw piece is a slotted block which
can be caused to slide freely upon the blade, and the inner surface of one end of the
slot is correspondingly toothed or serrated so as to engage the serrations upon the
blade, between the other side of which and the opposite end of the slot is inserted a
tapered cotter, wedge or other key. Upon pressing the cotter in the proper direction
the wedge action will tighten the movable jaw piece in any desired position upon the
spanner blade.
In some cases I dispense with the serrations, and in the same position insert a pin
or roller placed in a wedge-like slot in the block situate at the opposite side of the
spanner blade to that at which the cotter is disposed.
1001
WILLIAM J. MUNDEN.
"Inventor's Assistant" Office,
75 Chancery Lane, W.C., Agent for the Applicant.
An Improved Adjustable Spanner.
;
I, SAMUEL WATERS of 30° Grosvenor Road, Tunbridge Wells, in the County of
Kent, Decorator, 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 :-
This invention relates to spanners of the kind that are provided with a fixed and a
movable jaw piece, and means for adjusting the movable, in relation to the fixed jaw
piece, so that the spanner is capable of fitting any sized nut.
To carry out my invention I provide an elongated narrow plate or blade cranked at
one end to form the fixed jaw piece, one side of the plate or blade being toothed or
serrated to forin a roughened surface. The movable jaw piece consists of a slotted
TD 1

page_text: block which can be caused to slide freely upon the blade. The inner surface of one
end of the slot is correspondingly toothed or serrated so as to engage the serrations
upon the blade, between the other side of which and the opposite end of the slot is
inserted a tapered, cotter, wedge or other key.
In order that my invention may be clearly understood I append drawings in
which
Fig. 1 shews an elevation of my.spanner.
Fig. 2 shews a modification thereof.
1
A is a spanner blade of rectangular section, cranked at one end a to form the fixed
jaw piece; the spanner blade is serrated upon one side at a¹. B is a slotted movable
jaw piece, which can be caused to freely slide to and fro upon the spanner blade A.
The inner surface of one side of the slot in B is serrated at b. c is a tapered, cotter
or wedge key, which by its wedge like action forces the two serrated surfaces a, b, to
engage and thereby cause the movable jaw piece B to be temporarily fixed in any
desired position upon A. el care gib ends to the cotter to keep it in place.
In Fig. 2 is shewn a modification by means of which the serrated surfaces may be
dispensed with. This may be effected by substituting for the serrated surfaces, a pin
or roller D placed in a wedge shaped slot d formed in the slotted jaw piece B, which
pin is caused to engage the side of the blade A, by means of the cotter or wedge
key c, and thereupon tighten the movable jaw piece upon the blade A in any prede-
termined position. ¹ is a bracket to strengthen the movable jaw piece.
e is a stud
screwed into the lower end of the spanner blade to keep the movable jaw piece on the
blade.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed, I declare that what I
claim is:
(1) A spanner consisting essentially of a movable slotted jaw piece with a cotter
key, or wedge to cause the serrated inner surface formed on one side of the slotted
jaw piece to engage a similarly serrated surface upon the blade of the spanner, for the
purpose of temporarily fixing the movable jaw piece at any predetermined position in
relation to the fixed jaw piece, substantially as shewn and described.
(2) A spanner consisting essentially of a movable slotted jaw piece, a pin or roller
placed in a wedge shaped slot formed therein,, and a cotter, key, or wedge, for the
purpose of causing said pin to engage the side of the spanner blade, substantially as,
and for the purpose, shewn and described.
(3) The improved adjustable spanner substantially as shewn and described with
reference to Fig. 1.
(4) The improved adjustable spanner substantially as shewn and described with
reference to Fig. 2.
Dated this 5th day of August 1897.
WILLIAM J. MUNDEN,
75 Chancery Lane, W.C., Agent for the Applicant.