IMPROVEMENTS IN BOOTS AND SHOES
Year: 1884

page_text: .
I, JOHN MURDOCH TEVINDALE, of the City Shoe Factory, 148 Trongate Glasgow
in the County of Lanark, Boot and Shoe Manufacturer, do hereby declare the
nature of my said Invention for "IMPROVEMENTS IN BOOTS AND SHOES" to be as
follows:-
In the manufacture of leather boots and shoes of superior quality, the soles are
commonly attached to the uppers by securing together the insole, the lower edge of
the uppers and a "plysole" or thickness of leather, and then securing the outer sole
to the "plysole." The plysole and insole are in many cases attached by means of
brass screws which are driven into the sole and cut off, from a reel of screwed wire
by a machine known as the "Standard Screw Machine." The outer sole is in turn
attached by sewing to the plysole, but, to protect the stitches, a deep groove or
channel is cut in the outer solo and the leather turned up in forming the channel
is afterwards laid over the stitching. The forming of such a channel greatly
injures the outer sole which is often also liable to be cut through in cutting the
channel. On the other hand, while the outer sole may be secured by wire screws
entered from the outside, the cut ends of the screws so closely resemble the heads
of the rivets used in attaching the soles of an inferior quality of boots and shoes
that the better quality does not command a fair sale.
To overcome this objection and to obtain the solid and perfect attachment of the
outer sole which results from the use of the wire screws, I increase the breadth of
the plysole and outer sole if necessary so that it extends slightly beyond the upper
and I secure the outer sole to the plysole by driving in the wire screw from the
upper side of the plysole between the line of attachment of the "uppers" and the
edge of the sole; and I pass the screws into the outer sole but not quite through
it, or to such an extent that while the outer sole is firmly secured, the ends of the
screws do not protrude beneath the sole.
No channel is formed in the outer sole, but in some cases I form a channel in the
plysole, drive. the wires through such channel, and afterwards cover the ends of the
wire screws by laying down the leather ploughed up in forming the channel.

page_text: I, JOHN MURDOCH TEVINDALE, of 148 Trongate, Glasgow, in the County of
Lanark, Boot and Shoe Manufacturer, do hereby declare the nature of my invention
for "IMPROVEMENTS IN BOOTS AND SHOES," and in what manner the same is to be
performed to be particularly described and ascertained in and by the following
statement:-
-22
:
In the manufacture of leather boots and shoes of superior quality, the soles are
commonly attached to the uppers by securing together the insole, the lower edge of
the uppers and a "plysole" or thickness of leather, and then securing the outer sole
to the plysole" The plysole and insole are in many cases attached by means of
brass screws which are driven into the sole and cut off, from a reel of screwed wire
by a machine known as the "Standard Screw Machine." The outer sole is in turn
attached by sewing to the plysole but to protect the stitches, a deep groove or
channel is cut in the outer sole and the leather turned up in forming the channel is
afterwards laid over the stitching. The forming of such a channel greatly injures
the outer solo which is often also liable to be cut through in cutting the channel.
On the other hand while the outer sole may be secured by wire screws entered
from the outside, the cut ends of the screws so closely resemble the heads of the
rivets used in attaching the soles of an inferior quality of boots and shoes that the
better quality does not command a fair sale.
To overcome this objection and to obtain the solid and perfect attachment of the
outer solo which results from the use of the wire screws, I increase the breadth of
the plysole and outer sole if necessary so that it extends slightly beyond the upper
and I secure the outer sole to the plysole by driving in the wire screw from the
upper side of the plysole between the line of attachment of the upper and the edge
of the sole; and I pass the screws into the outer sole but not quite through it, or
to such an extent that while the outer sole is firmly secured, the ends of the screws
do not protrude beneath the sole.
No channel is formed in the outer solè, but in some cases I form a channel in the
plysole, drive the wires through such channel, and afterwards cover the ends of
the wire screws by laying down the leather ploughed up in forming the channel.
The accompanying drawing shows in elevation a portion of a standard Screw
Machine as employed in operating on a boot to fasten the outer sole to the plysole.
The plysole A is attached to the insole B of the boot by screws a driven from the
outside in the ordinary way; then the boot is placed on the last or support C as is
indicated on the drawing and wire screws d are driven in from the upper side of
the plysole A into the outer sole D.
"

page_text: 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
-
That improvement in the manufacture of boots and shoes which consists in
securing the outer sole by wire screws inserted from the upper side of the plysole
and into the outer sole substantially as and for the purpose set forth.
Dated this 4th day of September 1885