Improvements relating to Boot and Shoe Sewing or Stitching Machines.
Year: 1888

page_text: Date of Application, 6th Jan., 1888
Specification Accepted, 10th Feb., 1888
COMPLETE SPECIFICATION.
Improvements relating to Boot and Shoe Sewing or Stitching
Machines.
I, JOHN THOMAS RUSH, of No. 10, Cranston Street, Northampion, in the county of
Northampton, Boot and Shoe Sewer, 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 :—
My invention relates to boot and shoe sewing or stitching machines in which awls
or prickers are employed.
In machines as heretofore constructed for sewing or stitching boots and shoes, the
awls or prickers have been made integral with the arms or bars carrying the same;
so that when an awl became damaged or broken it was necessary, not only to replace
the awl, but also its carrying arm or bar, thus incurring considerable expense.
when awls of different sizes are required it is necessary to construct each one with its
own carrying bar.
Also
The chief object of my invention is to provide means whereby, when an awl
or pricker breaks, it may be replaced without necessitating the removal of the
carrying arm, and whereby several awls of different sizes may be attached to one
carrier.
5:
To enable my invention to be understood I will describe its application to a
"Keats stitcher it being understood that it may also be applied to other machines.
In the accompanying drawing
Figure 1 is a side elevation of an awl carrying arm and awl or pricker constructed
according to my invention and adapted for use with a Keats' machine.
Figure 2 is an underside view of the same.
Figure 3 is an elevation of my awl carrying arm partly in section, and
Figure 4 is a section on the line z, x, Figure 3.
a is my awl carrying bar and 6 is a socket which I form in one end of the said bar.
c is a detachable awl or pricker which I insert into the said socket.
In order to retain the awl in the socket the latter is made of a tapering shape internally,
as shewn in Figure 3, and is closed at its larger end by a screw f. The shank of the
awl corresponds in shape to the internal section of the socket, as shewn in Figure 3ª,
[Price 6d1]

page_text: so that it can be inserted into the socket and secured therein by the screw f (as
indicated by dotted lines in Figure 1) which is adapted to bear firmly upon the head
of the shank of the awl to force the same "home" in its socket.
To prevent the awl from rotating in the socket during operation its shank is
flattened upon its sides as shewn more clearly in Figures 3 and 3b the socket being
correspondingly shaped. It is obvious, however, that the shank and socket may be
made triangular, rectangular or of any other polygonal shape in transverse section;
or that lugs or projections upon the said shanks fitting into corresponding recesses in
the walls of the sockets, or vice versa, may be employed to prevent the awls from
rotating.
Having now particularly described and ascertained the nature of my said inven-
tion and in what manner the same is to be performed I declare that what I
claim is:
1. A boot and shoe sewing or stitching machine provided with an awl or pricker
which is detachable from its supporting arm or carrier, substantially as, and for the
purposes, described.
2. The combination of an awl carrying arm for a boot and shoe sewing or stitching
machine (the said arm having a socket at one end) and an awl or pricker adapted to
be inserted into the said socket and secured therein, substantially as described.
3. Awls or prickers for boot and shoe sewing machines, adapted to be inserted into
and secured in sockets formed in the carrying arms, substantially as described.
Dated the 6th day of January 1888.
G. F. REDFERN & Co.,
4, South Street, Finsbury, London
Agents for the Applicant.