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UNITED
STATES PATENT OFFICE.
MASCHILD D. CONVERSE, OF NEW YORK, N. Y.
NAIL-EXTRACTOR
SPECIFICATION forming part of Letters Patent No. 300,766,
dated June 24, 1884. Application filed October 18, 1883.
(No model.)
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To
all whom it may concern:
Be it known that I, Maschil D. Converse, a citizen of the
United States, residing in the city, county, and State of
New York, have invented a new and useful Nail-Extractor, of
which the following is a specification.
In
the use of nail-extractors heretofore constructed of a class
to which my invention belongs more or less annoyance and inconvenience
have been experience; in some from the noise consequent upon
the striking of one metallic part against another in the operation
of driving the jaws into the wood; in others from illy-adapted
construction, necessitating the operator to grasp the instrument
with the lower hand so near to the upper one and so far above
the point of the instrument's contact with the wood, in order
to allow sufficient space for vertical play of the fulcrum
and jaws between the nail-head and the lower hand, that the
guide-point and the gripping-edges of the jaws are allowed
too much lateral play, and too much time is lost in efforts
to adjust them properly over the nail and to keep them from
twisting out of position after adjustment, and from the liability
in nearly all of their more delicate parts—such as bolts,
springs, rivets, washers, and the like—to get out of
order, and the instrument thereby becoming inefficient or
useless.
The objects of my invention are to overcome these difficulties
and to construct a nail-extractor which shall be composed
of few and simple parts, and which may be more cheaply manufactured,
and at the same time insure greater durability. I attain these
objects, first, by dispensing entirely with the fulcrum as
a fixed part of either of the jaws, though the latter are
pivoted together, and attaching it rigidly to an independent
guide-piece instead, but in such a manner that although the
jaws are susceptible of vertical reciprocating motion, whereby
they can be simultaneously lifted and thrust into the wood
astride the head of the nail, they will instantly and automatically
interlock, by the agency of friction, with the fulcrum when
gripping and extracting the nail, thus making little or no
great noise in its operation by obviating the use of any auxiliary
or percussive device, and thus also enabling the operator
to grasp the instrument with one hand at the most advantageous
point, just above the contact-edge of the guide-piece to which
the fulcrum is attached, and instantly adjust it on the wood
beside the nail without interference from the fulcrum, or
from the simultaneous reciprocation of the jaws with the other
hand ; second, by widening the lower end of the guide-piece
and forming a chisel-edge thereon to engage the wood for a
considerable length of space, so that the instrument may not
be easily twisted out of position after adjustment over the
nail; and, third, by constructing the instrument entire, without
springs, bolts, rivets, or washers.
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