AN IMPROVED CONSTRUCTION OF SEWING MACHINE STANDS AND TREADLES
Year: 1884

page_text: I, JOHN KING MACDONALD, Manager of the Singer Manufacturing Company,
116 James Street, Bridgeton, Glasgow, in the County of Lanark, North Britain do
hereby declare the nature of the said invention for "AN IMPROVED CONSTRUCTION
OF SEWING MACHINE STANDS AND TREADLES" to be as follows:-
This Invention which relates to improvements in Sewing Machine Stands and
Treadles, has for its object to secure a parmanent and reliable support for both the
band wheel and Treadle, and to preserve their respective relative positions, so that
they would always co-operate to produce the best results with the least danger of
friction or binding.
0
The Invention consists of a brace, one side of which, is formed with a loop
within which the band-wheel can rotate.-The sides of this loop are provided with
conical bearings, for the crank shaft of the band-wheel. To the crank there is
coupled an ordinary pitman which at its lower end is pivoted to a rocking treadle.―
This Treadle is carried in conical bearings formed in another loop, that is to say,
by means of a cross-bar, at the lower part of the said brace, but such cross-bar,
may be omitted in which case the treadle is hung in pieces projecting downwards
from the said brace.

page_text: 1, JOHN KING MACDONALD, Manager of the Singer Manufacturing Company
116 James Street, Bridgeton, Glasgow, in the County of Lanark, North Britain, do
hereby declare the nature of my said invention for AN IMPROVED CONSTRUCTION
OF SEWING MACHINE STANDS AND TREADLES and in what manner the same is to
be performed, to be particularly described and ascertained in and by the following
statement:-
My Invention, which relates to improvements in Sewing Machine Stands and
Treadles, has for its object to secure a permanent and reliable support for both the
band wheel and -Treadle and to preserve their respective relative positions so that
they would always co-operate to produce the best results with the least danger of
friction or binding.
My Invention consists of a brace one side of which is formed with a loop within
which the band-wheel can rotate.-The sides of this loop are provided with conical
bearings for the crank shaft of the band wheel.-To the crank there is coupled an
ordinary pitman which at its lower end is pivoted to a rocking Treadle. This
Treadle is carried in conical bearings formed in another loop, that is to say, by
means of a cross-bar at the lower part of the said brace but such cross-bar may be
omitted in which case the Treadle is hung.in pieces projecting downwards from the
said brace.
In order that my said Invention may be properly understood and readily carried
into effect, I will now proceed to describe the Drawing hereunto annexed.
This Figure of drawing is a front elevation of a sewing machine stand and
treadle constructed according to and constituting my present Invention.
In carrying out my present Improvements, I construct the table top a and the
vertical legs or supports b, in the manner coinmon to sewing machine. The brace
connecting the legs or .supports b, together, serves also to stiffen and secure the
frame, and to perform the specific and additional functions hereinafter explained.
This brace c, is formed substantially as represented upon the annexed drawing,
with a loop within which the Band wheel d, rotates, and on the sides of this loop
there are provided conical bearings or centres e, for supporting the shaft f, which
carries the said band wheel d, and which shaft is preferably bent so as to form a
crank. To,this crank is attached an ordinary pitman g, which, at its lower end is
pivoted to an ordinary rocking treadle h. This treadle h, is supported in the lower
portion of the said brace c, which I prefer to construct in the manner represented,
forming practically another loop, the lower end of which is the cross bar on which
the treadle h, is hung. This cross bar may however be omitted and the treadle
hung directly on downward projections from the brace.
My Invention, as represented upon the annexed drawing, is there shown as
applied to a stand, adapted for use in supporting and driving a Singer Sewing
Machine, but I do not confine myself to any particular form of stand, the essential
part of my Invention being the providing of supports for both the band wheel d, and
the treadle h, which are integral with the brace c, so that after the said band wheel d,
with its crank shaft and said treadle h, have been hung within the said brace c,
and connected by a suitable pitman g, their adjustment to, and relationship with each,

page_text: other, are practically permanently secured. Means are provided for taking up the
wear, in the crank shaft f, by the bearings c, by the screw i, and in the treadle h,
by the screwed centres j, supported in bearing recesses formed in the brace c. By
the arrangement of parts herein before described with reference to the annexed
drawing, any twisting of, or other alteration in, the fitting or connections between
the brace c, and the legs or supports b, or between any of the several parts of the
sewing machine stand, will neither affect the hanging, adjustment or relationship
of the said band wheel d, and treadle h, and in fact the lower driving apparatus, of
the sewing machine, is, by my Invention, absolutely secured against any accident
short of the breakage or forcible distortion of the brace c, itself. This brace c,
being built strongly and preferably with a rib, is not at all likely to be injured in
ordinary use or by ordinary handling.
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
First. In a sewing machine stand a cross brace c, having formed as integral
parts thereof supports for both the band wheel d, and the treadle h, substantially
as and for the purposes hereinbefore set forth with reference to the annexed
drawing.
Second. In a sewing machine stand, a cross brace c, having supports for both the
band wheel d, and the treadle h, integral with the said brace, and provided in such
supports with means for adjusting and taking up the wear of such band
wheel and treadle substantially as hereinbefore set forth with reference to the
annexed drawing.
.
Third. In a sewing machine stand, a cross braco c, adapted to connect the
legs or supports b, thereof, and provided at one side with bearings for the
fly-wheel crank shaft f, and having a support at its base for the treadle h,
substantially as hereinbefore set forth with reference to the annexed drawing.
Fourth. The combination with the cross brace c, of a sewing machine stand of
a crank shaft f, and a treadle h, both mounted in the said brace c, substantially
as and for the purposes herein before set forth with reference to the annexed
drawing.
Fifth. A cross brace c, for sewing machine stands having at its base a cross
bar combined with a treadle h, mounted in the said cross bar substantially as
herein before set forth with reference to the annexed drawing.
Sixth. A cross brace c, for sewing machine stands, having as parts of its
bearings a pointed and adjustable bearing screw i, and a conical socket e,
combined with a fly wheel d, crank shaft f, provided at one end with a centre
adapted to said screw and having its other end pointed to fit into said socket
substantially as and for the purposes herein before set forth with reference to the
annexed drawing,
•
Seventh. A cross brace c, for sewing machine stands having as parts of its
bearings a lug with a conical centre and a pointed and adjustable bearing screw i,
arranged opposite said centre combined with a fly wheel crank shaft f, having
pivoted and recessed ends adapted to said socket and bearing screw respectively
substantially as and for the purposes herein before set forth with reference to the
annexed drawing.
J. H. JOHNSON, DAY & JOHNSON,
Applicant's Agents.