IMPROVEMENTS IN APPLIANCES FOR USE IN AND IN CON- NECTION WITH SEWING MACHINES
Year: 1877

page_text: PROVISIONAL SPECIFICATION left by Thomas Chadwick at the Office of the
Commissioners of Patents on the 13th March 1877.
THOMAS CHADWICK, of Bradbury and Company, Limited, of Oldham, in the
County of Lancaster. "IMPROVEMENTS IN APPLIANCES FOR USE IN AND IN CON-
NECTION WITH SEWING MACHINES."
My Invention relates, in the first place, to apparatus for filling the spools which
are used in the shuttles of sewing machines. For the said purpose I employ a
winder in connection with a thread layer, which arrests the action of the winder
when the spool is full. The spool is mounted in centres in winder and follower
spindles. When the follower spindle is pushed forwards the friction wheel on the
winder spindle is brought into contact with the fly wheel of the sewing machine,
or with the actuating wheel which gives motion to the said driving spindle. The
said follower spindle is locked in the forward position by means of a sliding
adjustable pin or belt, or of a latch. The said layer is formed with a surface which
is pressed by means of a spring towards the spindle of the spool, or towards the
coils of thread, as the case may be. The shank of the said layer, or any other con-
venient part thereof, is connected with the said bolt or latch, so that when the said
layer has been pressed away to a certain extent by the accumulation of thread upon
the spool, the said bolt or latch is disengaged from the follower spindle, and a
spring acting on the winder spindle is then permitted to push the said winder
spindle in a direction away from the fly wheel of the sewing machine, and as a
consequence the action of the winder ceases. The said movement of the winder
spindle brings the inner end of the said spindle over the end of the layer, which is
then held down ready for the insertion of an empty spool. I prefer to employ a
thread guide, consisting of an arm which is arranged to vibrate to and fro so as to
deliver the thread to the spool, the said thread being coiled a few times around the
said arm to impart the necessary tension to the thread.
A second part of my Invention relates to the shuttles of sewing machines. I
provide a shuttle with a hinged wire or rod, over which the thread passes from the

page_text: spool, and with an adjustable spring lever which presses the thread against the
inside of the shuttle to impart the requisite tension to the thread. From the said
spring the thread issues through a slot or nick in the edge of the shuttle, and this
nick I cover with a guard formed on and projecting from the ordinary spring which
is on the outside of the shuttle.

page_text: PROVISIONAL SPECIFICATION left by Thomas Chadwick at the Office of the
Commissioners of Patents on the 13th March 1877.
THOMAS CHADWICK, of Bradbury and Company, Limited, of Oldham, in the
County of Lancaster.. "IMPROVEMENTS IN APPLIANCES FOR USE IN AND IN CON-
NECTION WITH SEWING MACHINES."
My Invention relates, in the first place, to apparatus for filling the spools which
are used in the shuttles of sewing machines. For the said purpose I employ a
winder in connection with a thread layer, which arrests the action of the winder
when the spool is full. The spool is mounted in centres in winder and followor
spindles. When the follower spindle is pushed forwards the friction wheel on the
winder spindle is brought into contact with the fly wheel of the sewing machine,
or with the actuating wheel which gives motion to the said driving spindle. The
said follower spindle is locked in the forward position by means of a sliding
adjustable pin or bolt, or of a latch. The said layer is formed with a surface which
is pressed by means of a spring towards the spindle of the spool, or towards the
coils of thread, as the case may be. The shank of the said layer, or any other con-
venient part thereof, is connected with the said bolt or latch, so that when the said
layer has been pressed away to a certain extent by the accumulation of thread upon
the spool, the said bolt or latch is disengaged from the follower spindle, and a
spring acting on the winder spindle is then permitted to push the said winder
spindle in a direction away from the fly wheel of the sewing machine, and as a
consequence the action of the winder ceases. The said movement of the winder
spindle brings the inner end of the said spindle over the end of the layer, which is
then held down ready for the insertion of an empty spool. I prefer to employ a
thread guide, consisting of an arın which is arranged to vibrate to and fro so as to
deliver the thread to the spool, the said thread being coiled a few times around the
said arm to impart the necessary tension to the thread.
A second part of my Invention relates to the shuttles of sewing machines. I
provide a shuttle with a hinged wire or rod, over which the thread passes from the

page_text: spool, and with an adjustable spring lever which presses the thread against the
inside of the shuttle to impart the requisite tension to the thread. From the said
spring the thread issues through a slot or nick in the edge of the shuttle, and this
nick I cover with a guard formed on and projecting from the ordinary spring which
is on the outside of the shuttle.
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