IMPROVEMENTS IN NIPPERS FOR CUTTING WIRE AND FOR OTHER PURPOSES
Year: 1878

page_text: LETTERS PATENT. to Alexander Melville Clark, of Chancery Lane, in the
County of Middlesex, Patent Agent, for the Invention of. "IMPROVEMENTS IN
NIPPERS FOR CUTTING WIRE AND FOR OTHER PURPOSES." A communication
from abroad by Thomas Greenman Hall, of the City, County, and State of
New York, United States of America.
Sealed the 8th November 1878, and dated the 24th September 1878.
COMPLETE SPECIFICATION filed by the said Alexander Melville Clark at the
Office of the Commissioners of Patents on the 24th September 1878.
ALEXANDER MELVILLE CLARK, of Chancery Lane, in the County of Middlesex,
Patent Agent.
"IMPROVEMENTS IN NIPPERS FOR CUTTING WIRE AND FOR OTHER
PURPOSES." A communication from abroad by Thomas Greenman Hall, of the City,
County, and State of New York, United States of America.
The nature of the said Invention consists in forming the cutting jaws of the
nippers at the ends of levers which are operated upon by the handles, which handles
are both pivoted. The parts are held in position between two plates, and a cross
pin between the jaws of the nippers prevents contact of the cutting edges.
The present Invention is an improvement upon the Invention for which Letters
Patent were granted to me bearing date June 22nd, 1867, No. 1826.
In the accompanying Drawing Figure 1 is a side view of the improved nippers
with one of the side plates removed, and Figure 2 is an edge view of the nippers.
Similar letters of reference indicate corresponding parts.
a, b, are the jaws of the nippers, forined with cutting edges as usual. The
jaws a, b, are each at the outer end of levers c, d, respectively. c is the fulcrum pin
of lever c, and f is the fulcrum pin of lever d. The jaws are opened by a two-armed
spring g held by a pin h between the levers. i, k, are the handles, that are hung
upon fulcrum pins l, m, respectively, so that the handles act as levers, the inner end
of handle i being formed as a toe n that acts upon the lever c, while the handle k
is formed with a toe o that acts upon the lever d; these parts are sustained by the
side plates P, P. The fulcrum c, f, of the levers c, d, and fulcrums l, m, of the
ID...
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page_text: handles i, k, are screw pins that are entered through holes in one plate p, and screw
into holes in the plate p at the opposite side, the parts being thus securely held
together. q is a pin held by the plates p between the outer end of the levers c, d,
in such position that the jaws or levers will bear against the said pin q just before
the cutting edges come into contact, to prevent injury to the edges by contact or
overlapping.
The nippers are operated hy pressing the handles i, k, towards each other. Each
jaw a, b, is acted upon by compound leverage, and the pressure on any article placed
between the cutting faces is augmented by the dual construction of the parts.
The parts of the nippers are compact and strong, and not likely to break by any
pressure that can be applied by hand.
The nippers are easily put together or taken apart for repairs, and the parts are
of such shape that the lever jaws are interchangeable, as are also the handles.
Having described the nature of the Invention, and the manner of performing the
same, I declare that what I claim as new, and desire to secure by Letters Patent
is,―
1st. The levers c, d, and handles i, k, combined and arranged for operation, sub-
stantially as and for the purposes set forth.
2nd. The stop pin q in combination with the levers c, d, and side plates p, sub-
stantially as described.
A
3rd. The side plates p for sustaining the parts of the nippers, and connected
together by the fulcrum pins of the levers, substantially as described.
In witness whereof, I, the said Alexander Melville Clark, have hereunto set my
hand and seal, this Twenty-fourth day of September, in the year of our Lord
One thousand eight hundred and seventy-eight.
A M CLARKE
(LS)