Improvements in or relating to Spanners.
Year: 1896

page_text: Date of Application, 9th Sept, 1896
Complete Specification Left, 9th June, 1897-Accepted 24th July, 1897
PROVISIONAL SPECIFICATION.
Improvements in or relating to Spanners.
We, GEORGE SANDERS and PICKERING PHIPPS, Works Manager and Chairman
respectively of the Bamboo Cycle Company Limited, of Petit Street, Wolver-
hampton, in the County of Stafford, do hereby declare the nature of this invention
to be as follows:-
Our invention relates to spanners for turning nuts and bolts, and has for its
object the production of a light, strong and compact tool that will afford a good
grip on a comparatively large number of nuts or bolts of different sizes.
Our invention consists in pressing such spanners out of sheet metal blanks and
in drawing the bosses which are adapted to receive the nuts or boltheads. We may
carry out our invention in various ways. In one preferred form of construction
we take a blank of sheet steel and press the greater part of the length of the same
to a channel formed of approximately rectangular section. Near each end and at a
certain distance apart, we draw down the metal to a greater depth forming two
bosses of square, circular, hexagonal or other suitable shape. We then punch out
a portion of the bottom of each boss leaving an aperture of suitable form to receivo
a square, D, hexagonal or other shaped nut or bolthead. These apertures are
surrounded by the inwardly directed flanges formed by the remaining portions of
the bottoms of the bosses and these flanges, though light in themselves, add very
much to the strength and durability of the spanner. We take a second blank
similar to the first and treat it in a like manner preferably forming the apertures
in the four bosses all of different sizes. The two blanks are then placed edge to
edge with the bosses on each respectively opposite one another, and are secured in
position by rivetting, brazing or other suitable means. A third blank of flat form
and suitable contour may be introduced between the other two and secured at the
same time; it need not extend the whole length of the spanner but is preferably
long enough to form a partition between the opposite boxes. The two ends of the
spanner may conveniently be formed into a turn-screw and an open jawed aperture
respectively. The bosses are made deep enough to receive nuts and bolt heads
of any ordinary height and as the said nuts and bolt-heads are held by all their
angles and close down to their bases a very good grip is afforded with little risk
of slipping or injury. If the interior of the smaller portion of a pair of opposing
bosses be made not smaller than the aperture in the opposite portion of the same
pair of bosses and the intermediate blank be dispensed with or suitably apertured
the depth of the pair of bosses as a whole may be considerably reduced.
Dated this 8th day of September 1896.
G. DOUGLAS LEECHMAN,
18 Hertford Street, Coventry, Patent Agent for the Applicants.

page_text: COMPLETE SPECIFICATION.
Improvements in or relating to Spanners.
We, GEORGE SANDERS and PICKERING PHIPPS, Works Manager and Chairman
respectively of the Bamboo Cycle Company Limited, of Petit Street, Wolver-
hampton, in the County of Stafford, 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 :-
Our invention relates to spanners for turning nuts and bolts, and has for its
object the production of a light strong and compact tool that will afford a good
grip on a comparatively large number of nuts or bolts of different sizes.
Our invention consists in pressing such spanners out of sheet metal blanks and
in drawing the bosses which are adapted to receive the nuts or bolt heads. We
may carry out our invention in various ways. One preferred form of construction
is illustrated by Figures I II III & IV of the accompanying drawings whereof,
Figure I is a plan of a pressed blank, Figures II & III are transverse sections on
the line a-a and b-b respectively in Figure I and Figure IV is a side view of the
finished spanuer.
Like numerals refer to like parts throughout the drawings.
We take a blank of sheet steel and press the greater part of the length 7 of the
same to a channel form of approximately rectangular section. Near each end and
at a certain distance apart, we draw down the metal to a greater depth forming two
bosses 2 of circular, square, hexagonal or other suitable shape. We then punch
out a portion of the bottom of each boss leaving an aperture 4 of suitable form to
receive a hexagonal, square, D, or other shaped nut or bolthead. These apertures 4
are surrounded by the inwardly directed flanges 6 formed by the remaining portions
of the bottoms of the bosses." We take a second blank similar to the first and
treat it in a like manner preferably forming the apertures in the four bosses all
of different sizes. The two blanks are then placed edge to edge with the bosses
on each respectively opposite one another, and they are secured in position by
rivetting, brazing or other suitable means.
A third blank (8) of flat form and suitable contour may be introduced between
the other two and secured at the same time, as shown in the side view Figure V.
Such third blank need not extend the whole length of the spanner but, if used, is
preferably long enough to form a partition between the opposite bosses. If the
interior of the smaller portion of a pair of opposing bosses be made not smaller
than the aperture on the opposite portion of the same pair of bosses and the
intermediate blank be dispensed with or suitably apertured, the depth of the pair
of bosses as a whole may be considerably reduced as the top of a nut held by the
flanges of one boss can be accommodated within the interior of the opposite boss,
as indicated by dotted lines in Figure IV.
To reduce the dimensions of the spanner and the cost of its manufacture we
sometimes leave the body or shaft 7 flat, only raising the bosses 2 from the blank,
as shown in side elevation at Figure VI. Also the flanges 6 may be dispensed with
and the interior of the bosses shaped to bear directly on the sides of the nut or the
like, as shown for hexagon nuts in the plan view Figure VII.
The two ends of one or more of the blanks may conveniently be formed into a
turnscrew 9 and an open jawed aperture 10 respectively. The bosses are made
deep enough to receive nuts and bolt heads of any ordinary height, and as the said
nuts and bolt heads are held by all their angles and close down to their bases, a
very good grip is afforded with little risk of slipping or injury.

page_text: Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that :-
We are aware that spanners have already been constructed by forming holes in
pieces of sheet metal and fixing two of such pieces together, and we do not broadly
claim such construction but what we do claim is :-
1. A spanner consisting of two parts pressed out of sheet metal and having
bosses (adapted to receive the nuts or boltheads) drawn from such sheet metal, the
said two parts being secured together by rivetting or other suitable means,
substantially as set forth.
2. The improved construction of spanners, substantially as herein described with
reference to Figures I. II. III. and IV. of the accompanying drawings.
3. The improved construction of spanners, substantially as herein described with -
reference to Figure V of the accompanying drawings.
4. The improved construction of spanners, substantially as herein described with
reference to Figures VI and VII of the accompanying drawings.
G. DOUGLAS LEECHMAN,
18 Hertford Street, Coventry, 75 Chancery Lane, London, W.C., and
49 Middle Abbey Street, Dublin, Patent Agent for the Applicants.