A. BALANCED WHEEL FOR SEWING MACHINES AND OTHER ROTATORY MACHINES
Year: 1886

page_text: I, JAMES ARTHUR FOOTTIT of Sudbury near Derby, Engineer, do hereby declare
the nature of my invention for A. BALANCED WHEEL FOR SEWING MACHINES AND
OTHER ROTATORY MACHINES, to be as follows:-
In the Provisional Specification of my Invention N° 4852 I have described a
device to serve the purpose of and especially adapted for, imparting an evenly
balanced uniform motion to rotating butter churns; Now, my present Invention is
intended to take the place of the one first named and to fulfil the function thereof
in cases where the constructive features of the rotating machine, apparatus, utensil
or other contrivance and the purposes served by same would not allow of the
device described in the Specification of my Invention first above referred to being
adopted for ensuring the equilibrating action to which I have referred in said
Specification.
The improvement constituting my present Invention is especially applicable to
sewing machines. It consists in providing the inner periphery of the rim of the
driving wheel, with an extra portion of metal of a suitable shape and so disposed
as to ensure that at the time of the needle piercing the cloth the weighted portion
of the wheel will be descending and the momentum assists the needle in its
descent; then as soon as the needle is through, the force or energy which has
been exerted in one part of the revolution of the wheel, serves to check (owing to
the balanced part of the wheel having a tendency to operate in a direction opposite
to that in which the wheel is being rotated) the momentum of the wheel which
has been imparted as aforesaid but which now is not required; thus preventing
the jerking, irregular motion which occurs in the case of sewing machines as
usually constructed and which is an ever recurring cause of the breaking or
snapping of the cotton, thread or other filament due to the sudden pull upon
the same owing to the irregular jerking motion above explained. Whereas in
DOJ1

page_text: accordance with my present Invention the uniform rotary motion of the balanced
wheel aforesaid is imparted correspondingly to the needle and all the other
reciprocating parts of the machine.
Although I have described my Invention as being specially applicable to, and
adapted for use in Sewing Machines, I do not confine myself necessarily to Sewing
Machines, inasmuch as the balanced wheel hereinbefore referred to may be used
with advantage in cases which present themselves in other machines or utensils for
various industrial and also agricultural purposes, amongst the latter I may mention
for instance mowing machines.

page_text: COMPLETE SPECIFICATION.
A Balanced Wheel for Sewing Machines and other Rotatory
Machines.
I JAMES ARTHUR FOOTTIT of Sudbury near Derby Engineer do hereby declare
the nature of my invention for A BALANCED WHEEL FOR SEWING MACHINES AND
OTHER ROTATORY MACHINES and in what manner the same is to be performed, to
be particularly described and ascertained in and by the following statement:-
-
In the Provisional Specification of my Invention No 4852 I have described a
device to serve the purpose of and especially adapted for imparting an evenly
balanced uniform motion to rotatory butter churns Now my present Invention is
intended to take the place of the one first named and to fulfil the function thereof
in cases where the constructive features of the rotating machine, apparatus utensil
or other contrivance and the purposes served by same would not allow of the
device described in the Specification of my invention first above referred to being
adopted for insuring the equilibrating action to which I have referred in said
Specification.
The improvement constituting my present Invention is especially applicable to
sewing machines It consists in providing the periphery of the rim of the driving
wheel, with an extra portion of metal of a suitable shape and so disposed as to
ensure that at the time of the needle piercing the cloth the weighted portion of the
wheel will be descending and the momentum assists the needle in its descent then
as soon as the needle is through the force or energy which has been exerted in one
part of the revolution of the wheel serves to check (owing to the balanced part of
the wheel baving a tendency to operate in a direction opposite to that in which
the wheel is being rotated) the momentum of the wheel which has been imparted
as aforesaid but which now is not required, thus preventing the jerking irregular
motion which occurs in the case of sewing machines as usually constructed and.
which is an ever recurring cause of the breaking of sewing machine needles and
the breaking or snapping of the cotton, thread or other filament which is due to the
sudden pull upon the same owing to the irregular jerking motion above explained.
Whereas in accordance with my present Invention the uniform rotary motion of
the balanced wheel is imparted correspondingly to the needle and all the other
reciprocating parts of the machine Said application of my present Invention is
illustrated in the accompanying sheet of drawings, in which Figure 1. is a front
elevational view of a hand sewing machine wheel having the improvement
according to my Invention Figure 2 is a horizontal section on the line A B
Figure 1. Figure 3 is a side elevational view of a treadle worked sewing
machine wheel and attachments for working same.
Referring to Figure 1, A¹ is the extra piece of metal hereinbefore referred to
with which the inner periphery of the wheel A of an ordinary hand sewing
machine is provided for the purpose aforesaid B being the handle by which said
wheel is rotated as usual on its axis C As will be seen in reference to the
horizontal sectional view Figure 2 the counterbalancing portion of metal A' is in
this case cast solid with and forms a portion of the rim of the wheel,

page_text: Referring to Figure 3 the treadle wheel A is formed with the extra portion of
In this
metal A similarly as in the case of the hand wheel above referred to
latter type of sewing machine the function of the extra portion of metal A¹ is to
balance the weight of the connecting rod D and treadles E E¹ and cross bar E",
Said extra portion A¹ being here cast or otherwise formed in such a position on the
periphery of the wheel A relatively to the treadle working mechanism as shall best
accomplish the desired object.
Although I have described my Invention as being specially applicable to and
adapted for use in sewing machines I do not confine myself necessarily to sewing
machines, inasmuch as the balanced wheel herein before referred to may be used
with advantage in cases which present themselves in other machines or, utensils. for
various purposes. My Invention may be applied with advantage to balance the
crank and trendle in foot lathes.
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
Balanced Wheels for Sewing Machines and other rotatory machines substantially
as herein set forth.
.