IMPROVED AUTOMATIC BRAKE FOR SEWING MACHINES
Year: 1884

page_text: I, FREDERICK WILLIAM CHEETHAM of 131, Great Norbury Street, Hyde in the
County of Chester, Hat Manufacturer do hereby declare the nature of said
Invention for AN IMPROVED AUTOMATIC BRAKE FOR SEWING MACHINES to be as
follows:-
The object of my Invention is to stop the sewing machine immédiately the
driving belt is loosed or the driving clutch thrown out of gear.
My Invention is particularly applicable to those sewing machines which are
driven by power and to which motion is communicated only when the operator
presses upon a lever or treadle to cause a tension pulley to tighten the driving
band or to move a driving clutch into gear with a clutch on the sewing machine.
In performing my Invention I connect to the treadle or lever by which the
driving belt or clutch is operated a brake formed of a block mounted on or
connected to a spring, in such manner that when the treadle or lever is moved to
stop the machine by removing the pressure of a friction pulley or releasing a
clutch or otherwise the brake is released and pressed by the spring against the
fly wheel or other convenient revolving part of the machine thus stopping it
instantly.
Although I have described the brake as being connected to and operated by a
spring it might be actuated by a weight or in other convenient manner.
roes

page_text: I FREDERICK WILLIAM CHEETHAM, of 131 Great Norbury Street, Hyde, in the
County of Chester, Hat Manufacturer, do hereby declare the nature of said
Invention for AN IMPROVED AUTOMATIC BRAKE FOR SEWING MACHINES, and in
what manner the same is to be performed, to be particularly described and
ascertained in and by the following statement :--
The object of my Invention is to stop the sewing machine immediately the
driving belt is loosed, or the driving.clutch thrown out of gear,
My Invention is particularly applicable to those sewing machines which are
driven by power and to which motion is communicated only when the operator
presses upon a lever or treadle to cause a tension pulley to tighten the driving band
or to move a driving clutch into gear with a clutch on the sewing machine.
In performing my Invention I connect to the treadle or lever by which the
driving belt or clutch is operated a brake formed of a block mounted on or
connected to a spring in such a manner that when the treadle or lever is moved
to stop the machine by removing the pressure of a friction pulley or releasing
a clutch or otherwise, the brake is released and pressed by the spring against the
fly wheel or other convenient revolving part of the machine, thus stopping it
instantly.
Although I have described the brake as being connected to and operated by a
spring, it might be actuated by a weight or in other convenient manner.
And in order that my Invention may be fully understood and readily carried
into effect I will proceed to describe the accompanying Sheet of Drawings, reference
being had to the Figures and letters marked thereon.
Figs. 1 and 2 are views of part of a sewing machine, driven by power to which
my improved brake is applied.
a is the shaft of the sewing machine; a¹ the fly wheel; b the shaft from which
the power is taken and c the driving band which passes from the pulley b¹ fast on
the shaft b round the pulley a³ on the sewing machine; on one end of the treadle
leverd is mounted loosely the tension pulley e; to a point near the treadle
I connect a rod or wire f secured at the upper end to a spring g; this spring is
fastened to the machine and carries the brake block h.
The operation is as follows:-Motion is given to the shaft b and in, order' to
start the sewing machine the operator presses the treadle d which withdraws the
brake h by means of the rod f and at the same time brings the tension pulley e
on to the band c thus imparting motion to the wheel a² and so to the working
parts of the machine: when it is desired to stop the machine the treadle is allowed
to rise sufficiently for the spring g, alone, or assisted in any convenient manner, to
press the brake h against the fly wheel a¹ and at the same moment the tension
pulley e is released and the machine thus brought to a stand instantly; or if
preferred it may be arranged to stop gradually.
The brake block h may be made of wood, wood faced with leather, or of any
suitable material or the block may be dispensed with and the spring allowed to
act direct on the fly wheel or other revolving part of the sewing machine.
Having now particularly described and ascertained the nature of my said
Invention and in what manner the same is to be performed I would have it
understood that I do not limit myself to the details herein described and shown as
they may be varied or modified without departing from the nature of my Invention.
It is obvious that a brake of a modified form and placed in a different position-to

page_text: the brake hereinbefore mentioned provided that it is arranged to act automatically
in conjunction with the treadle motion or other stopping and starting gear may be
used and-
I declare that what I claim is-
An improved automatic brake for sewing machines, connected to or working in
conjunction with the treadle motion or other stopping and starting gear as
described and as illustrated by the Drawings.
1001
EDERICK WILLIAM CHEETHAM.
H. B. Barlow,
Agent for Applicant,
17, St. Ann's Square, Manchester.
FREDERICK WILLIAM CHEETHAM.
H. B. Barlow,
Agent for Applicant,
17, St. Ann's Square, Manchester.