Improvements relating to Lasting Pliers.
Year: 1898

page_text: Date of Application, 20th Apr., 1898-Accepted, 25th June, 1898
COMPLETE SPECIFICATION.
Improvements relating to Lasting Pliers.
We, DANIEL EDWARD SMITH, Boot Manufacturer, and ALFRED TYREE, Merchant,
both of 183, Hereford Street, Christchurch, in the Colony of New Zealand, 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:
1
This invention relates to lasting pliers or lasting pincers which are provided
with a pivoted claw attachment designed to act as a fulcrum when the tool is
employed as a lever to stretch leather or other material over a last or other
object.
Pivoted claws hitherto employed have not proved convenient in practice chiefly
because they have a point at their ends which has a great tendency to tear up
and out of the surface into which it is forced when the pliers in operation are
caused to assume a small angle with the last or other object over which material
is being strained.
Our present invention consists firstly, in providing the ends of the pivoted
claws with a series of points arranged one behind the other approximately in arc
or quadrant shape so that they severally come into operation and take a fresh
grip in a different place upon the object or material as the pliers are operated.
Another improvement consists in the provision of a hammer head upon the
side of the pliers.
In the accompanying drawings,--
Figure 1 is a side elevation and.
Figure 2 a plan of a pair of pliers fitted with our invention.
Figure 3 is a section on 3--3 Figure 2.
The claws (a) are pivoted upon the pliers by the pin (c) which also serves as a
pivot pin for the jaws of the pliers.
A spring (d) secured by set pin (e) takes under a bridge piece (f) connecting
the jaws and normally tends to maintain the claws in the position shewn in full
lines Figure 1.
The teeth (g) upon the ends of the claws are arranged approximately in the
shape of an arc and each is made of the best shape to hold in the object or
material upon which it is pressed when the tool is in use.
In practice when commencing to strain leather over an insole upon a last the
first tooth in the series is caused to take into the insole and as the leather is
brought over, the pliers come down upon the insole (by reason of the claws being
pivoted) and the several points are brought one after the other into engagement
with the insole until the last one is in use when the claws will be in the position
shewn in dotted lines Figure 1.
A hammer head (4) is formed upon the pin (c) and a shoulder (i) passes through
the claw upon one side and bears against the pliers so that when hammering
there is no tendency to jamb the claws upon the pliers.
A nut (k) upon the end of pin (c) permits the parts to be adjusted.
077

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 what
we claim is:-
-
1. The combination with lasting pliers having claws pivotally attached to
serve as a fulcrum, of a series of points or teeth at the end of such claws arranged
one behind the other, substantially as and for the purposes set forth herein.
2. The combination with lasting pliers having claws pivotally attached to serve
as a fulcrum of a hammer head formed upon the pivot pin of such pliers,
substantially as and for the purposes set forth herein.
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.