IMPROVEMENTS IN SEWING MACHINES
Year: 1884

page_text: I JOSEPH MATTHEW SELLERS, of the firm of William Sellers and Sons, Keighley
in the County of York, Sewing Machine Manufacturer, do hereby declare the nature
of my Invention for IMPROVEMENTS IN SEWING MACHINES, to be as follows:-
This invention relates to certain improvements in the construction of sewing
machines, and has for its object the traversing of the shuttle in such a manner as
to dispense with cams and bell crank levers, and arrange the working parts of the
apparatus, so that the movement is direct and noiseless.
I accomplish my object by mounting to the underside of the bed plate of the
machine a lever upon a coned stud as fulerum, one end of the lever is prepared for
the reception of the shuttle, and the other is arranged with a slot, in which works
a split runner mounted upon a stud fixed at a certain distance from the centre of
a disc mounted upon a rotating upright shaft, by which means a direct reciprocating
notion is given to the shuttle. The slot in which works the split runner may be
extended to the end of the lever and for a certain distance towards the fulcrum,
and through these extended portions of the slot, I pass screws, by the regulation
of which, the width of the slot can be adjusted to the runner, so as to take up any
"slack" that may develope through the working of the machine, and reduce the
liability of the shuttle motion making a noise in consequence of the parts
becoming slack.
Dated this tenth day of January 1881
WAUGH & CHAPMAN,
Agents for the said Joseph Matthew Sellers.

page_text: I, JOSEPH MATTHEW SELLERS, of the firm of William Sellers and Sons, Keighley,
in the County of York, Sewing Machine Manufacturers, do hereby declare the
nature of my invention, for IMPROVEMENTS IN SEWING MACHINES, and in what
manner the same is to be performed, to be particularly described and ascertained
in and by the following statement
This invention relates to certain improvements in the construction of sewing
machines, and has for its object the traversing of the shuttle in such a manner so
as to dispense with cams and bell crank levers, and to arrange the working
parts of the apparatus so that the movement is direct and noiseless; and consists in
mounting to the underside of the bed plate of the machine, à lever upon a coned
stud as fulcrum, one end being prepared for the shuttle, and the other arranged
with a slot, in which works a split runner mounted upon a stud projecting from a
disc that is secured to the bottom end of a rotating vertical shaft, thereby
imparting a direct reciprocating motion to the shuttle.
The slot in which the split runner works is extended beyond the traverse of
the same, towards the fulcrum and to the end of the lever; and through these
extended portions of the slot, I pass screws in order that the width of the slot can
be adjusted to the runner, so as to take up any "slack," and reduce the liability of
the shuttle motion making a noise when the parts become warm.
In order that my invention may be better understood, I will further describe the
same by making reference to the accompanying drawings, in which Fig 1 represents
the underside of a sewing machine bed plate fitted with my direct acting shuttle
motion. Fig 2 is a side elevation of the lever, disc and a portion of the vertical
revolving shaft and Fig 3 is a plan of the lever detached from the machine.
My invention is applicable to those machines that are arranged with a vertical
revolving shaft mounted in the machine head at the opposite end to which the
needle is placed, and to the bottom of this shaft, I secure a disc A, to the face of
which I fix a stud, and mount thereon a split runner B which slides to and fro in
the wide portion of the slot in lever C, causing the latter to reciprocate on
fulcrum D, and traverse the shuttle backwards and forwards in the race E.
The slot in lever shown in Figs 1 and 3, is extended towards the fulcrum and to
the end of the lever at S and S¹, and through the extended portions I place
screws F, by the regulation of which, the width of the slot can be adjusted to tho
size of the runner B, so as to take up any "slack" that may develope through the
working of the machine, and thus reduce the liability of the shuttle motion making
a noise when the parts become worn.
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
The actuation of the shuttle by lever C, arranged with an extended slot at S
and S through which screws are passed for the purpose described.
WAUGH & CHAPMAN,
Agents for the Applicant.