Year: 1896

page_text: Date of Application, 8th June, 1896-Accepted, 5th Sept., 1896

page_text: necessity for varying the shape of the heel pad, as in toe pads, adjustable connections
are not necessary. It is desirable, however, to press over the stock to conform
with the shape of the last at the junction of the heel and instep. Hitherto this
has not been well accomplished, but in my improved heel pad chain the chain is
formed in two parts longitudinally at its ends (see Fig. 8) and carrier arms hh
secured to each of the parts. The carrier arms are secured in the heel wiper
carriage B in the usual way and the operation is also as usual, except that
owing to the construction I have described the ends of the chain work
independently of each other in pressing the heel pad H' and a much closer
conformity with the shape of the last is secured. The guide tang of the heel pad
is marked '.
In Figs. 10 and 11 I have shown my improved wiper.
The wipers for the toe parts of shoes, used in the lasting process when
performed by machinery, are old and well known and my improved wiper differs
from wipers formerly used only in details of construction, which increase the
certainty and efficiency of its operation and enable the operator to detach the
jaws JJ of the wiper from the support J and replace them by other jaws of a
different contour, when desired, without removing the support from the lasting
machine.
The attachment of the jaws to the support has heretofore been effected by means
of a bolt passing upward through the inner end of the jaws and the outer end of
the support, the bolt being headed at both ends so that the three parts were
permanently held in proper relation to one another, the jaws being free to move
upon the bolt as a pivot, as will be clear.
In my improved wiper the jaws J J have upon their upper surface rearwardly
opening slots 2 and are connected together at the rear by a hinge, two parts ja j
of which are upon one jaw and one part which fits between the two parts, is upon
the other jaw. The support J which carries the wiper jaws has a non-circular
hole at its outer end. Through the hinge j³ is a round hole which is countersunk
through j³ and j.
The connecting bolt J3 has at one end a conical head adapted to fit the
countersunk bolt hole in the hinge, next to the head is a round part slightly more
than equal in length to the thickness of part of the hinge of the jaws, next is
a non-circular part, the diagonal measurement of which is equal to the diameter of
the round part of the bolt just mentioned and the length of which is slightly less
than the thickness of the support J, this non-circular part of the bolt fitting into
the non-circular hole in the outer end of support J. The end of the bolt J³ is
round and screw threaded, its diameter being equal to the smallest diameter of the
non-circular part just mentioned and long enough to project (say) one quarter of
an inch above the upper surface of support J. A nut screws upon this projecting
end. The objection to that style of wiper in which the jaws and support were
permanently fastened together was that both jaws and support had to be
removed from the lasting machine when a change of the jaws was necessary for a
different style of shoe.
My device avoids this objection. The hole in the outer end of the support J
and the non-circular portion of the bolt J³ prevent the bolt J³ from turning,
so that the movement of the jaws does not put any strain upon the screw
threads of the bolt and so that the nut may be screwed up or unscrewed without
any necessity of holding the bolt, with all its attendant inconveniences.
The slots opening rearwardly permit the jaws to be drawn out of the wiper
carriage when the connecting bolt has been removed, the studs upon the actuating
arms of the wiper carriage, which would otherwise prevent such withdrawal,
passing out of the slots as the wiper jaws are drawn forward. As heretofore
inade the slots upon the surface of the wiper jaws have been closed at the
rear.
My improved toe post is illustrated in Figure 3.
Heretofore, in machines of this class, of which the well known Chase lasting