CERTAIN IMPROVEMENTS IN TREADLES FOR SEWING MACHINES
Year: 1884

page_text: I, FELIX LOUIS EUGENE COULVIER, of Bohain, Aisne, France, Merchant do
hereby declare the nature of my said invention for CERTAIN IMPROVEMENTS IN
TREADLES FOR SEWING MACHINES to be as follows:-
My invention relates to new or improved treadles for sewing machines, by one of
which, full speed may be attained much more rapidly than with the treadles now
in use, and by the other of which, the machine may be stopped instantaneously
without shock or effort.
The treadle for the purpose of accelerating the speed, consists of a vertical
elbowed lever, at the right of the machine, and swinging on an horizontal bar,
fastened under the table, by hinges; two fixed collars prevent any shifting. The
treadle is furnished with an ear in which are several holes for the suitable placing
of the pin of a connecting rod.
The ear is the main part of the invention, by it, the necessary length may be
given to the connecting rod, so that the treadle may be swung under the table and
beyond a vertical line passing through the treadle, and the leg in working, is never
bent backwards as with the other treadles now in use.
To stop the machine instantaneously, a break is used, consisting of a flat spring,
the end of which is fixed to a rod keyed on the shaft of the fly wheel. The said
spring break almost surrounds the fly wheel, and it is covered inside with leather,
rivetted or otherwise. When the treadle is pressed by the beel of the left foot, the
treadle acts upon the break by means of a connecting rod combined with a sliding
cam, the end of which is fastened firmly to the other end of the break.

page_text: I, FELIX LOUIS EUGENE COULVIER, of Bohain, Aisne, France, Merchant do
hereby declare the nature of my said invention for CERTAIN IMPROVEMENTS IN
TREADLES FOR SEWING MACHINES and in what manner the saine is to be performed,
to be particularly described and ascertained in and by the following statement :—
My invention relates to new or improved treadles for sewing machines, by one of
which, full speed may be attained much more rapidly than with the treadles now
in use, and by the other of which, the machine may be stopped instantaneously,
without shock or effort.
I attain this result by means of the mechanism illustrated in the accompanying
drawings, in which fig 1 is a front view of the mechanism, and fig 2 is a side
view of the same. Similar letters indicate similar parts in the two figures.
The treadle B B¹ for the purpose of accelerating the speed, consists of a vertical
elbowed lever at the right of the machine and swinging on an iron bar fastened
under the table A by the hinges C and D: two fixed collars E E prevent any
shifting. The right foot is placed on B¹. The treadle B B is furnished with an
ear I in which are several holes for the suitable placing of the pin K of the
connecting rod L.
The ear I is the main part of the invention, by it, the necessary length may be
given to the connecting rod so that the treadle may be swung under the table, and
beyond a vertical line passing through the point O of the treadle, and the leg, in
working is never bent backwards as with the other treadles now in use.
To stop the machine instantaneously, I use a break consisting of a flat
spring M N, the end of which is fixed at M to a rod P keyed on the shaft of the
fly wheel. The said spring break almost surrounds the fly wheel S, and it is
covered inside with leather, rivetted or otherwise. When the treadle R is pressed
by the heel of the left foot, the treadle acts upon the break M N by means of a
connecting rod T combined with a sliding cam V, the end of which is fastened
firmly at the point N to the other end of the break M N.
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
1. In a sewing machine, the oscillating treadle B B¹ and the ear I in combination
with the connecting bar L and the fly wheel S, for the purpose set forth.
2. In a sewing machine, the treadle R, connecting rod T, in combination
with the sliding cam V, spring break M N, connecting rod P, and fly wheel S,
substantially as described.