Year: 1886

page_text: Date of Application, 28th Sept., 1886.
Complete Left, 12th Apr., 1887
Complete Accepted, 13th May, 1887.
1, ARTHUR FRANCIS WILEMAN, of No. 59 Windsor Road, Ealing in the county.
of Middlesex, Engineer do hereby declare the nature of this invention to be as
follows:
My invention relates to a feed motion for such sewing machines as have a rotating
spindle extending along the goose neck to work the needle, my object being to utilise
in a simple manner the rotation of this spindle for giving the required feeding move-
ments to a serrated presser foot. For this purpose, on the hinder side of the rotating
disc which works the needle I mount a roller which works in a peculiarly shaped cam
slot of a plate that extends down and terminates immediately above the table in a
serrated presser foot, whilst at its upper end it has a slotted hole engaging a fulcrum
pin fixed in the head of the needle guide. This plate is strained by a spring acting
obliquely on it, so as to draw it down and also to draw it towards one side. The cam
slot in the plate is so formed that as the roller revolves in it, during one part of the
revolution it presses the plate towards one side moving it on the fulcrum pin as a lover
of the second order, and thus the serrated foot is caused to feed the work onwards; at
a succeeding part of the revolution, it raises the plate bringing its presser foot clear
above the work, and thereupon the spring brings the presser foot back, and it is again
pressed down upon the work ready to make a fresh feeding movement. The back
stroke of the plate is arrested by a screw stop which can be adjusted more or less
forwards, thereby determining the length of each stitch. Instead of arranging the
spring so as to effect the back stroke of the presser foot, it may be arranged so as
simply to press it down, the back stroke being effected by the roller acting in the
cam slot of the plate. In some cases I fix the fulcrum pin below the cam slot which
is shaped to the opposite hand, the plate and presser foot being then made to act as a
lever of the first order.
ABEL & IMRAY,
28, Southampton Buildings, London, W.C.,
Agents for the Applicant.

page_text: A Feed Motion for Sewing Machines.
I, ARTHUR FRANCIS WILEMAN of No. 59, Windsor Road, Ealing in the County of
Middlesex, Engineer, 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 a feed motion for such sewing machines as have a rotating
spindle extending along the goose neck to work the needle, my object being to utilise
in a simple manner the rotation of this spindle for giving the required feeding move-
ments to a serrated presser foot. As an illustration of a feed motion according to my
invention I will describe it as applied to a sewing machine such as I have described in
my specification No. 11500, of 1886, referring to the accompanying drawings shewing
the modifications of such a machine adapting it for a feed motion according to my
present invention. Fig. 1 is a vertical section of the machine, Fig. 2 is a part
For
transverse section on Z Z of fig. 1, and 3 is a sectional plan on Y Y of fig. 1.
description of the machine generally including the driving gear for the needle and
shuttle, which form no part of my present invention, I refer to my previous Specifica-
tion No. 11500 of 1886, in the drawings accompanying which these parts are marked
with the same letters as in the accompanying figures.
On the back of the rotating disc G which drives the needle I provide a crank pin
and roller P which works in a cam slot of a lever P. This lever has at its upper end
a slot entered by a pin p¹ which forms a fulcrum for it, and its lower end is formed as
a serrated presser foot p². A spring p³ acts on P on one side of the fulcrum so as to
pull it down and also to the one side. As the disc G revolves in the direction of the
arrow Fig. 2 its roller p acting on one side of the slot of P first pushes it to the one
side and the presser foot, being at this time drawn down by the spring på advances
the fabric. The roller p then acting on the upper part of the slot in P raises P thus
lifting the presser foot off the fabric, whereupon the spring p³ causes it to make its
back stroke.
There is a screw pin g which acts as a stop to the lever P in its back stroke, by
screwing this more or less backwards, this back stroke can be made greater or less,
according as a longer or shorter stitch is required.
Although I have described the feed motion as applied to a particular kind of lock
stitch sewing machine, it is obviously applicable to other forms of sewing machine
whether they effect lock stitch or not, provided that they have in them goose necks a
rotating spindle that can be made available for working a crank pin such as p.
Sonetimes instead of arranging the fulcrum p' above the crank as shewn, I arrange it

page_text: to enter a slot in P below the crank, P then being a lever of the first order. The
curved slot in which the crank works is in that case shaped to the opposite hand, and
the spring p and stop screw 9 are arranged to suit the reversal of the movement of
the upper part of P.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed I declare that what I claim is :-
In a sewing machine the construction and use of a feed motion consisting of a
presser lever P with its cam slot in which works a crank pin p in combination with a
spring p and stop screw 9 substantially as herein described and illustrated by the
accompanying drawings.