Improvements in Machines for Lasting Boots and Shoes.
Year: 1891

page_text: Date of Application, 25th Feb., 1891-Accepted, 11th Apr., 1891
COMPLETE SPECIFICATION.
Improvements in Machines for Lasting Boots and Shoes.
I, ALBERT EDWARD STIRCKLER, of Springfield, 200, Kettering Road, North-
ampton in the County of Northampton, Engineer, 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 stateinent :-
My invention relates to machines for lasting boots and shoes in which nipper
wipers are employed for drawing or straining the upper over the sides of the last
such for example as are described in the Specification to Letters Patent No. 17581
of 1887 and 14586 of 1888.
My present invention has for its object to provide means whereby the angle or
direction of pull of the nipper wipers on the upper may be varied as required
according to the shape of the last so as to always obtain the proper draught. I will
describe with reference to the accompanying drawing an arrangement for carrying
out my invention but I do not restrict myself to the precise details shewn.
Figures 1 and 2 are clevations at right angles to each other of one of the blocks
or carriages to which the nipper wipers are attached and
Figure 3 is a plan of the same.
The block A is provided with a dovetail projection a fitted to slide in a corre-
sponding groove in the table B of the machine as described in the Specifications
hereinbefore referred to. Fitted to turn on a pivote on the top of the block A. is a
plate or piece C having lugs or projections d to which is hinged at e the block D
having on its upper face an under cut groove or recess in which slides the bar g
carrying the swivelling piece to which the jaws of the nipper wiper are attached.
The means for raising and lowering the block D and also for sliding the bar g to
and fro in the groove or recess forms no part of my present invention and may
be the same as those described in the Specifications hereinbefore referred to or other
convenient means.
Hitherto the bar has been arranged to slide only in a direction at right angles
to the axis of the last any angular direction of pull on the upper by the nipper
wipers being dependent on the swivelling movement of the nipping jaws on the end
of the bar whereas according to my present invention the angle of the bar g in a
horizontal plane can be varied as required so as to cause the nippers to receive a
positive pulling or stretching action in any desired angular direction whereby
a proper draught is obtained with greater certainty than heretofore. As shown in
the drawing and as hereinbefore stated the plate C carrying the block D and bar
is capable of turning on the pivot e so that by turning the plate on the pivot the
angle of the bar with reference to the axis of the last may be varied as required.
In the plate C is a curved slot & through which a screw passes into the block A so
that by screwing this screw into the block A the washer shoulder or collar m under
or on the screw may be caused to press on and securely retain the plate C in its
adjusted position.
Having now particularly described and ascertained the nature of my said inven-
tion, and in what manner the same is to be performed, I declare that what I
claim is:-
1. In machines for lasting boots and shoes means whereby the nipper wipers
employed for stretching or drawing the upper over the sides of the last may be
positively adjusted to any desired angle in a horizontal plane substantially as and
for the purpose hereinbefore described.

page_text: 2. The arrangement and combination of parts as shewn in the accompanying
drawings for the purpose described.
Dated the 25th dor of Feb 1801
J. H. JOHNSON & Co.,
47, Lincoln's Inn Fields, Agents.