An Improved Bench Shears.
Year: 1897

page_text: Date of Application, 12th Jan., 1897
Complete Specification Left, 12th Oct., 1897-Accepted, 4th Dec., 1897
PROVISIONAL SPECIFICATION.
An Improved Bench Shears.
I, WILLIAM KIMBERLEY, of Highgate Tool Works, Emily Street, Birmingham,
Tool Manufacturer, do hereby declare the nature of this invention to be as
follows:-
This invention refers to shears for fixing in a bench, or for holding in a vice, and
like purposes, such as are used by sheet metal workers and others.
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It consists in applying to the said shears an arrangement of links and compound
levers, operated by the handle as first lever, said levers having joints serving as
fulcrums, by means of which great power can be communicated to the cutting jaws.
The depression of the handle communicates power by a link to a lug on the back
of the lower jaw of the cutting edge, which is thus raised while the upper jaw is by
a similar action depressed. A coil spring placed behind the levers assists to raise
the handle, and open the jaws.
Dated this 12th day of January 1897.
S. S. BROMHEAD,
Agent for Applicant, 97 Newgate St. E.C,
I, WILLIAM KIMBERLEY, of Highgate Tool Works, Emily Street, Birmingham,
Tool Manufacturer, 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 refers to shears for fixing in a bench, or for holding in a vice, and
like purposes, such as are used by sheet metal workers and others, and also to portable
or hand shears.
It consists in applying to the said shears an arrangement of links and compound
levers, operated by the handle as first lever, said levers having joints serving as
fulcrums, by means of which great power can be communicated to the cutting jaws.
The depression of the handle communicates power to a lug on, or the tail end of the
lower jaw of the cutting jaws, which is thus raised while the lower jaw is by a similar
action depressed. A coiled spring assists to raise the handle, and open the jaws after
cutting.
I will now describe the invention with reference to the accompanying drawings in
which.
Fig. 1 shews my improved shears as used in a vice.
Fig. 2 shews the shears adapted for tinmen's or sheet metal workers use and like
nurnoses

page_text: Referring to Fig. 1
a are the jaws of a vice, between which an extension piece b. from the shears is
secured. The lower end of b is screw threaded, and provided with a shoulder piece,
so that the shears may be fitted to a bench instead of a vice, being secured to the
bench by a nut or other simple fastening. The extension piece b. is formed integrally
with the fixed fulcrum piece c. d. is a handle bar to operate the cutting blades,
fulcrumed at c¹ to the fixed fulcrum piece c. and at e. to the tail of one of the cutting
blades f. The cutting blades are pivoted together at f. The cutting blade f¹ is also
provided with a tail piece fulcrumed at c² to the fixed fulcrum piece c. 9. is a recoil
spring placed between the handle bar d. and the fixed fulcrum piece c. to assist in
opening the jaws after cutting. g is a stop piece for the handle.
Referring to Fig. 2 the action is similar, but two handles are used in the place of
the single handle bar, and the extension piece b.
It will be seen that by the above described construction, a particularly useful and
powerful tool is obtained which can be used in a fixed or portable form.
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. An improved shears for cutting metal, consisting essentially of a pair of cutting
blades pivoted together, the tail end of one blade being fulcrumned to the end of the
operating handle, the handle in its turn being centred upon a fixed fulcrum piece
upon which the tail end of the other cutting blade is also centred, the whole being
adapted to be fixed between the jaws of a vice, or to a bench by an extension piece
attached to or formed integrally with the fixed fulcrum piece, with or without a
reccil spring for opening the jaws after cutting, substantially as shewn and described.
2. An improved hand shears for cutting metal, consisting essentially of a pair of
cutting blades pivoted together, each of the tail ends of same being pivoted to one
end of each of a pair of handles, the latter also being pivoted to each other, with or
without a recoil spring to assist in opening the jaws, substantially as shewn and
described.
Dated this 10tL
1008
S. S. BROMHEAD.
Patent Agent, 171 Queen Victoria St London.