An Improved Machine for Moulding Stiffenings for Boots and Shoes.
Year: 1892

page_text: Date of Application, 22nd June, 1892
Complete Specification Left, 5th Dec., 1892-Accepted, 7th Jan., 1893
PROVISIONAL SPECIFICATION.
[Communicated from abroad by WILLIAM JOHNSON YOUNG, of No. 83 Chestnut
Street, in the City of Lynn, in the County of Essex and State of
Massachusetts, United States of America.]
An Improved Machine for Moulding Stiffenings for Boots and Shoes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent
Agents, 45 Southampton Buildings, in the County of Middlesex, do hereby declare
the nature of this invention to be as follows:-
One feature of my invention relates to holding the blank under compression
between the moulds, for a considerable time an object which has long been regarded
as highly desirable but heretofore many practical objections have existed in all
machines designed to accomplish it.
In practice I use one quarter of a revolution to set the moulds; one-half to keep
them set, and the quarter to release them. This allows nearly half a revolution
for delivering and feeding but this long dwell of the pressure necessarily lessens the
product of each set and my invention consists in the combination of two or more
sets of moulds so timed that the moulds of one set are opened for delivery and feed
while the moulds of the other continue to exert their pressure upon the blank; that
is in the combination of two or more sets of moulds, with two or more cams, one
cam for each set of moulds, and fixed at the proper difference on the cam shaft, to
cause one set of moulds to hold the blank under pressure, while the other set is
opened for delivery and feed.
The improved machine comprises a male mould and a female mould, and for the
best results the female mould should be made in two parts each swinging on a
fulcrum so that when the toggles are straightened, the moulds will be forced with
great pressure upon the blank between them and the abutment will be forced
slightly back against the spring which in practice exerts a pressure of several tons.
The toggles are actuated by cams through a cam rod and while the two cams are
alike, one is set on the cam shaft at 180° from the other in order that while each
may cause a dwell of one-half a revolution, yet the dwell of one will occupy
the time for the delivery and feed of the other. With my invention, one operator
can tend both sets of moulds and the product of one of my improved machines, will
be nearly double that of any single mould machine; for in spite of the fact that each
stiffener is kept under great pressure while the machine is making half a revolution,
the product is nearly twice that which is practical on a machine with a single pair
of moulds. In fact the main feature of my invention while it is not merely giving
the long dwell, nor merely using two machines as one, is the combination of these
two features, so that one operator may have full time for tending both sets of
moulds, thus getting the full benefit of the long dwell, and also increasing the
product.
Where a longer dwell is desired the machine should have three pairs of moulds,
with three cams set at the proper difference on the cam shaft; but this will not
increase the product for the speed must of course be such as to allow the practical
delivery and feed and in one of my machines with two pairs of moulds the speed is
such that half a revolution suffices for the delivering and feed; consequently if
one-third only of a revolution be allowed for delivery and feed the speed must be
reduced.
The cam-shaft is geared to a driving shaft and each cam rod is formed with the
usual link through which the cam-shaft passes.
I prefer to actuate the flange turners by cams cam rods rockers and connecting

page_text: rod thereby reciprocating slide to which the flange turner is fast. The flange
turner will of course be omitted where stiffeners without flanges are to be formed.
The mechanism for causing each cam to operate its set of moulds is the best
known to me, but may obviously be varied largely without departure from my
invention, for as above explained my object is to improve the quality of the work
(by continuing the pressure as long as possible) and also to increase the quantity,
and this object I have attained, by operating two sets of moulds by cams
arranged as to give the long continued pressure, and also enable an operator to tend
both sets, without undue haste, and also without undue loss of time.
Dated this 22nd day of June 1892.
SO
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.
COMPLETE SPECIFICATION.
An Improved Machine for Moulding Stiffenings for Boots and Shoes.
I, HENRY HARRIS LAKE, of the firm of Haseltine, Lake & Co., Patent Agents,
45 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:-
One feature of my invention relates to holding the blank under compression
between the moulds, for a considerable time; an object which has long been regarded
as highly desirable, but heretofore many practical objections have existed in all
machines designed to accomplish it.
In practice I use one quarter of a revolution to set the moulds; one-half to keep
them set, and the quarter to release them. This allows nearly half a revolution for
delivering and feeding but this long dwell of the pressure necessarily lessens the
product of each set and my invention consists in the combination of two or more
sets of moulds so timed that the moulds of one set are opened for delivery and feed
while the moulds of the other continue to exert their pressure upon the blank; that
is in the combination of two or more sets of moulds, with two or more cams, one
cam for each set of moulds, and fixed at the proper difference on the cam shaft, to
cause one set of moulds to hold the blank under pressure, while the other set is
opened for delivery and feed.
In the accompanying drawings I have shown how my said invention may be
conveniently and advantageously carried into practice.
Figure 1 is a plan of a machine constructed according to my invention.
Figure 2 is a section on the line 2, 2 of Figure 1.
Figure 3 is a cross section on the line 3 3 of Figure 2 and
Figure 4 is a cross section on the line 4 4 of Figure 2.
Similar letters of reference indicate corresponding parts in the several figures of
the drawings.
A is the male mould and B the female mould, and for the best results the female
mould should be made in two parts each swinging on a fulcrum b, as clearly shown
in Figure 1, so that when the toggles D D₁ are straightened, the moulds A and B
will be forced with great pressure upon the blank between them and the abutment d
will be forced slightly back against the spring d' which in practice exerts a pressure
of several tons.
The toggles are actuated by the cams F through a cam rod f, and while the two
cams Fare alike, one is set on the cam shaft at 180° from the other in order that
while each may cause a dwell of one-half a revolution, yet the dwell of one will
occupy the time for the delivery and feed of the other. With my invention, one
operator can tend both sets of moulds, and the product of one of my improved
machines, will be nearly double that of any single mould machine; for in spite of
the fact that each stiffener is kept under great pressure while the machine is making

page_text: half a revolution, the product is nearly twice that which is practical on a machine
with a single pair of moulds. In fact the main feature of my invention while it is
not merely giving the long dwell, nor merely using two machines as one, is the
combination of these two features so that one operator may have full time for
tending both sets of moulds, thus getting the full benefit of the long dwell, and also
increasing the product.
Where a longer dwell is desired the machine should have three pairs of moulds,
with three cams set at the proper difference on the cam shaft; but this will not
increase the product for the speed must of course be such as to allow the practical
delivery and feed, and in one of my machines with two pairs of moulds the speed
is such that half a revolution suffices for the delivering and feed; consequently if
one-third only of a revolution be allowed for delivery and feed the speed must be
reduced.
The cam-shaft f¹ is geared to a driving shaft f and each cam rod f is formed
with the usual link through which the cam shaft passes.
I prefer to actuate the flange turners G by cams g cam rods g¹, rockers g² 9³ and
connecting rod 9*; thereby reciprocating slide go, to which the flange turner G is
fast. The flange turner will of course be omitted where stiffeners without flanges
are to be formed.
The mechanism shown for causing each cam to operate its set of moulds is the
best known to me, but may obviously be varied largely without departure from my
invention; for as above explained my object is to improve the quality of the work
(by continuing the pressure as long as possible) and also to increase the quantity;
and this object I have attained, by operating two sets of moulds by cams so
arranged as to give the long continued pressure, and also enable an operator to
tend both sets, without undue haste, and also without undue loss of time.
Having now particularly described and ascertained the nature of this inven-
tion 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 :-
The improved machine for moulding heel stiffenings consisting of a plurality of
sets of moulds, a cam for each set; and intermediate mechanisms, substantially
such as are described; the cams being adjusted on the cam shaft to alternate the
action of the moulds; and all the parts being organized to operate substantially as
and for the purposes set forth.
Dated this 3rd day of December 1809
HASELTINE, LAKE & Co.,
45, Southampton Buildings, London, W.C., Agents for the Applicant.