Improvements in Lasting Machines.
Year: 1899

page_text: Application, 21st July, 1899-Accepted,
30
35
COMPLETE SPECIFICATION.
Improvements in Lasting Machines.
66 Patent Schuhmaschinen Gesellschaft mit
I, GEORG HEINZE, Director of the
schränkter Haftung," of 38, Mauerstrasse, Berlin, Germany, do hereby declaro
e nature of my said invention and in what manner the same is to be performed
be particularly described and ascertained in and by the following state-
ent:
The present invention consists in an improvement of the machine described in
he Patent No. 27174/98, which shows a machine for provisionally connecting the
pper leather to the inner sole or to the welt, and in this machine the parts
re pressed together and provisionally attached by means of a suitable adhesive,"
which acts as a substitute for the tacks hitherto employed.
In carrying the invention described in the above application into practice cer-
tain constructive alterations have had to be made in order to attain the proper
attachment of the upper to the sole without creasing the former. The present
invention comprises these alterations.
In order to render the present specification more easily intelligible reference is
had to the accompanying drawing in which similar letters of reference denote
similar parts through the several views:
Fig. 1 is a cross section showing the means for pressing the upper against the
last, Fig. 3 is a similar cross section showing the arrangement of the machine
and Fig. 2 a plan of the last carrier.
According to the present invention elastic plates ff are employed to press the
leather of the upper underneath the inner sole. These plates are cut approxi-
mately to the shape of the sole and are provided with tapered ends gg adapted
to slide one over the other when the lasting plates ff have been forced forward
so as to bring the upper leather properly round the last. The plates ff are
removably attached to laterally sliding blocks nn, by means of thumb screws 11,
the said blocks being operated in the well known manner by means of a screw
These plates are elastic and capable of
spindle with right and left hand threads, so as to force the leather of the upper
underneath the inner sole below the last.
a certain amount of play in the vertical plane. In order to properly stretch the
leather of the upper over the last the plates are caused to cooperate with a series
of cam surfaces ee, having upper surfaces inclined upwardly towards the last, so
that the elastic or flexible plates ff will bend and force the leather under the last
as illustrated at the left hand side of Figure 3.
In order to allow the plates to be compressed after the upper has been folded
in under the last, the last support is vertically movable as will be seen a
Figure 3 the adjustment being effected by means of a rack on the support stem
and a pinion i, but any other suitable means may be employed. The last itsel
is also vertically adjustable by means of a spindle c and handwheel, the lower en
40 of said spindle fitting into a socket d of the last (Fig. 3). The arrangement
the overlapping ends of gg of the plates ff has the effect of forcing the leath
underneath the last at the toe and heel end of the same without forming crease
the plates are thus caused to close on to the last all round.

page_text: The vertical adjustability of the block 6 enables the adjustment of the appa-
ratus for leather of various thicknesses, whilst the attachment of the plates ff
by means of the thumb nuts 17 and slots in the plates enables them to be easily
and conveniently interchanged for work of various kinds. The elasticity of the
plates has a very advantageous effect on the leather and serves to keep it tightly
against the last and to prevent the formation of creases or folds.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed I declare that what
I claim is: -
1: A lasting machine of the class covered by Patent No. 27174 of 1898
characterised by leather tucking plates adapted each to operate one half of the
leather of the upper and having projecting parts at the ends extending slantingly
outwards and overlapping each other, by means of which the leather of the upper
is stretched over the last without forming creases and means for pressing the
leather against the under surface of the last consisting of a series of projecting
lugs having outwardly declined surfaces against which the spring plates act, so
as to press the upper leather against the inner sole in the manner and for the
purpose substantially as described.
2: In combination with the machine covered by Claim 1, the adjustable
arrangement of the last carrier with the last or the means for vertically adjust-
ing the pressure on the last or means for mutually adjusting both parts in order
to render the apparatus adaptable for leather of various thicknesses and to enable
the compression of the parts after they have been assembled in the manner and
for the purpose substantially as described.
A
L 1 19
01
1
3 T
ד
1000
W. P. THOMPSON & Co.,
322, High Holborn, London, W.C., Patent Agents for the Applicant