Year: 1889

page_text: [Communicated from abroad by OSUAR WARREN WRITCHER, of Hyde Park, FRANK
WESTON WHITCHER, of Boston, and JONATHAN HENRY EMERY, of Quincy, all
in the State of Massachusetts, United States of America, Merchants. ]
I, WILLIAM ROBERT LAKE of the firm of Haseltine, Lake & Co., Patent Agents,
Southampton Buildings, in the County of Middlesex, 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 :-
The object of my invention is to so construct a pair of shoe-maker's pinchers as to
strengthen and prevent twisting or straining of the joint between the two levers to
provide for the ready opening and closing of the pinchers, and to strengthen the
construction of the adjustable haminer-head with which these pinchers are usually
provided.
In the accompanying drawings, Figure 1 is a perspective view of a pair of shoe-
maker's pinchers constructed in accordance with my invention. Fig. 2 is a plan
view of the same. Fig. 3 is a side view with the detachable hammer-head in section,
and Fig. 4 is a transverse section on the line 1 2, Fig. 3.
A and B represent the two levers of the pinchers, which are pivoted together by
means of a pin, a, the short arms of the lever being curved and provided with
engaging-teeth, as usual. The lever B of the tool is of substantially the same width
throughout, and the lever A is expanded at the joint, by reason of the formation on
said lever of side wings, b, which carry the pivot-pin a, this construction permitting
the ready insertion and removal of the lever B by simply driving out the pivot-pin a,
which is made considerably larger than usual in order to give strength to the joint.
The wings 6 on the lever A have rearwardly-projecting fingers b¹, which fit snugly
against the sides of the lever B and serve to keep the same properly in line with the
lever A, and thus prevent any twisting or wabbling of the jaws of the tool.
From the under side of the short arm of the lever A projects a threaded stud, d,
which is adapted to a threaded socket in the hammer-head D, with which this class of

page_text: tools is usually provided, this hammer-head being adjustable, so as to vary its position
in respect to the jaws an operation which is required when the tool is used for
lasting. In order to insure a solid bearing of the hammer-head on the threaded stem,
however, when said head is projected, one or more washers, f, are interposed between
the end of said stem and the bottom of the socket in the hammer-head, as shown in
Fig. 3.
The formation of the threaded stem on the lever A for the reception of the hammer-
head provides a much stronger construction than when the threaded stem is formed
on the hammer and screwed into an opening in the lever, this being the plan now
in general use.
On the under side of the lever B, a short distance from the outer end of the same,
is a finger, g, which serves to prevent the hand from slipping off the tool, and
also to insure the holding of the tool in the hand in such position that the little
finger may act upon the upper side of the long arm of the lever B, so as to depress
the same in order to open the jaws. (See dotted lines in Fig. 1.).
Lugs i project from the opposite sides of the lever B in the rear of the pivot-pin a,
these lugs serving, by contact with the under side of the wings b of the lever A to
limit the movement of the levers toward each other and prevent excessive strain upon
the toothed portions of the jaws of the levers.
Having now particularly described and ascertained the nature of my said invention,
and in what manner the same is to be performed as communicated to me by my
foreign correspondent, I declare that what I claim is :-
1. The combination in a pair of pinchers, of the two levers and the pivot-pin
therefor, one of said levers having side wings carrying the pivot-pin, whereby an
opening of the full width of the other lever is formed for the reception of the latter,
all substantially as specified.
2. The combination, in a pair of pinchers, of the two levers and a pivot-pin therefor,
with side wings carried by one of the levers and having rearwardly-extending fingers
bearing upon the sides of the other lever in the rear of the pivot, to prevent twisting
of the levers, all substantially as specified.
3. The combination, in a pair of pinchers, of a lever having projecting side wings,
a pivot-pin carried thereby, and a second lever fitting between said side wings and
having laterally-projecting lugs bearing upon the under sides of the same, to serve
as stops, all substantially as specified.
4. The combination, in a pair of pinchers, of the pivoted levers, one of which has
a projecting threaded stem with a hammer-head, having a threaded socket for the
reception of said stem, all substantially as specified.
5. The combination, in a pair of pinchers, of the pivoted levers, one of which has
a projecting threaded stem, the hammer-head having a threaded socket for receiving
said stem, and a washer interposed between the end of the stem and the base of the
socket, all substantially as specified.
6. The combination, in a pair of pinchers, of two levers pivoted together, the long
arm of one of said levers having on the outer side and some distance from its end a
forwardly bent or curved projecting finger, g, serving as a stop for the hand, all
substantially as specified.
321 1
r
$11000
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London
Agents for the Applicant.