IMPROVEMENTS IN APPARATUS FOR MANUFACTURING LIFTS FOR BOOT AND SHOE HEELS
Year: 1877

page_text: LETTERS PATENT to William Cromwell Hollowell, of Grove Road, in the Town
of Northampton, in the County of Northampton, for the Invention of..
"IMPROVEMENTS IN APPARATUS FOR MANUFACTURING LIFTS FOR BOOT AND
SHOE HEELS."
Sealed the 12th June 1877, and dated the 1st March 1877.
PROVISIONAL SPECIFICATION left by the said William Cromwell Hol-,
lowell at the Office of the Commissioners of Patents on the 1st March
1877.
WILLIAM CROMWELL HOLLOWELL, of Grove Road, in the Town of Northampton,
in the County of Northampton. "IMPROVEMENTS IN APPARATUS FOR MANU-
FACTURING LIFTS FOR BOOT AND SHOE HEELS."
My Invention relates to apparatus for manufacturing lifts for boot and shoe heels
by rivetting together a number of layers or pieces of leather so as to form what is
usually known as a "piece lift," to be afterwards fastened on the boot or shoe. For
this purpose I paste together the pieces of leather and place them in a die which is
open at the top and has holes bored through its bottom. The die being charged, I
place it on the bed of a press which is of the following construction -On the
lower part of the framing is mounted in bearings a shaft carrying a fly wheel
loaded at one part of its periphery. This shaft has near its middle a crank con-
nected by a rod to a treadle, and at each end it has a crank or eccentric connecte. :
by upright rods, adjustable in length to a cross head which works in vertical guide,
at the upper part of the press. To the middle of this cross head is fixed a punch or
plunger, of shape corresponding to the before-mentioned die.
The bed on which the die is placed has a moveable plate which rests on a spring,
and has in it holes corresponding to those in the bottom of the die, into which
holes enter pins fixed to the bed below. In these holes are placed rivets with their
points upwards, and the charged die is then placed on the plate, whereupon the
treadle being depressed by the foot the fly wheel and its shaft are caused to turn
partly round, thereby causing the cross head to descend and forcing its plunger into
the die. By this action the die and plate on which it rests are forced downwards
in opposition to the spring; but the rivets being borne on the fixed" pins below are
caused to pass through the "piece lift" and to become rivetted at their points
against the face of the plunger. The pressure of the foot on the treadle being now
[Price 6dl

page_text: relieved, the load on the fly wheel causes the shaft to turn back and the cross head
and plunger to ascend, whereupon the die containing the "piece lift" rivetted is
removed, fresh rivets are placed in the holes of the bed plate, and another die
charged with pieces is put on the press and operated on in like manner.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said William Cromwell Hollowell in the Great Scal Patent Office on the
29th August 1877.
WILLIAM CROMWELL HOLLOWELL, of Grove Road, in the Town of Northampton,
in the County of Northampton. "IMPROVEMENTS IN APPARATUS FOR MANU-
FACTURING LIFTS FOR BOOT AND SHOE HEELS."
My Invention relates to apparatus for manufacturing lifts for boot and shoe heels
by rivetting together a number of layers or pieces of leather so as to form what is
usually known as a "piece lift," to be afterwards fastened on the boot or shoe. For
this purpose I paste together the pieces of leather and place them in a die, which is
open at the top and has holes bored through its bottom. The die being charged, I
place it on the bed of a press, which is of the following construction:- -On the
lower part of the framing is mounted in bearings a shaft carrying a fly wheel,
loaded at one part of its periphery. This shaft has near its middle a crank con-
nected by a rod to a treadle, and at each end it has a crank or eccentric connected by
upright rods, adjustable in length to a cross head which works in vertical guides at
the upper part of the press. To the middle of this cross head is fixed a punch or
plunger, of shape corresponding to the before-mentioned die.
The bed on which the die is placed rests on a spring, and has in it holes corre-
sponding to those in the bottom of the die, into which holes enter pins fixed to the
bed below. In these holes are placed rivets with their points upwards, and the
charged die is then placed on the plate, whereupon the treadle being depressed by
the foot, the fly wheel and its shaft are caused to turn partly round, thereby
causing the cross head to descend and forcing its plunger into the die. By this
action the die and plate or bed on which it rests are forced downwards in opposition
to the spring, but the rivets, being borne on the fixed pins below, are caused to pass
through the "piece lift" and to become rivetted at their points against the face of
the plunger. The pressure of the foot on the treadle being now relieved the load
on the fly wheel causes the shaft to turn back and the cross head and plunger to
ascend, whereupon the die containing the "piece lift" rivetted is removed, fresh
rivets are placed in the holes of the bed plate, and another die charged with pieces
is put on the press and operated on in like manner.
DESCRIPTION OF THE DRAWINGS.
Fig. 1 represents a side view, and Fig. 2 a front view of a press employed in
manufacturing lifts for heels according to my Invention, and Fig. 3 represents to an
enlarged scale a section of a die adapted thereto.
A, A, are the two side frames of the press; B, the crank shaft mounted in
bearings in the side frames of the press; C, the fly wheel loaded on one side; D, the
crank near the middle of the shaft connected to the treadle E; O, O, are cranks at
the ends of the shaft B, connected by adjustable side rods F, F, to the cross head G,
which works in guides H, H, in the upper parts of the frames A, A, and has in its
middle a boss bored to receive the punch or plunger K. On the table L, fixed to the
side frames, is placed the die apparatus, which consists of a plate M having a
number of pins m projecting upwards from it, each of those pins entering a hole in
a plate N, shewn in plan at Fig. 4, which is kept up by a helical or other suitable
spring n. On the plate N is placed the die S containing the pieces which are to
form the heel lift, rivets p, p, having been first inserted into the holes of the plate N

page_text: above the pins m. When by the action of the press produced by the pressure of
the foot on the treadle E, the plunger K is brought forcibly down on the pieces,
compressing them, the spring n allows the plate N and die S to descend, whilst the
rivets p, p, being supported by the pins m, are thrust through the pieces and
rivetted against the face of the plunger K. On relieving the pressure on the
treadle E the counter weight on the fly wheel causes the crank shaft to turn back-
wards, raising the cross head G and plunger K, whereupon the die S containing the
rivetted lift is removed and another charged die is put in its place and operated on
in like manner.
Having thus described the nature of the said Invention, and in what manner the
same is to be performed, I claim:-The die S, the perforated spring plate N, and the
fixed pins m operating in combination with the plunger K, substantially as and for
the purposes herein set forth.
In witness whereof, I, the said William Cromwell Hollowell, have hereunto
set my hand and seal, this Fourteenth day of August, in the year of our
Lord One thousand eight hundred and seventy-seven.
W. C. HOLLOWELL. (L.S.)