IMPROVEMENTS IN MOTOR APPARATUS CHIEFLY DESIGNED FOR OPERATING SEWING MACHINES, AND OTHER SMALL OR LIGHT MACHINES
Year: 1872

page_text: LETTERS PATENT to George Haseltine, of the "International Patent
Office," Southampton Buildings, London, Doctor of Laws, for the
Invention of "IMPROVEMENTS IN MOTOR APPARATUS CHIEFLY DESIGNED FOR
OPERATING SEWING MACHINES, AND OTHER SMALL OR LIGHT MACHINES."
A communication from abroad by George Washington Manson, of
the City and State of New York, United States of America,
Maahan
COMPLETE SPECIFICATION filed by the said George Hascltine at the
Office of the Commissioners of Patents, with his Petition and
Declaration, on the 30th November 1872, pursuant to the 9th
Section of the Patent Law Amendment Act, 1852.

page_text: WHEREAS I am in possession of an Invention for "IMPROVEMENTS
IN MOTOR APPARATUS CHIEFLY DESIGNED FOR OPERATING SEWING MACHINES, AND
OTHER SMALL OR LIGHT MACHINES," and have petitioned Her Majesty to
grant unto me, my executors, administrators, and assigns, Her Royal
Letters Patent for the same, and have made solemn Declaration that
it has been communicated to me from abroad by George Washington
Manson, of the City and State of New York, United States of America,
Mechanic.
NOW KNOW YE, that I, the said George Haseltine, do hereby declare
that the following Complete Specification, under my hand and seal, fully
describes and ascertains the nature of the said Invention, and in what
manner the same is to be performed in and by the following statement,
reference being had to the accompanying Drawing, forming a part of
this Specification.
The object of this Invention is to obtain a spring power which shall
be effective, durable, and compact, producing a motor applicable as a
substitute for manual power and which serves very advantageously for
operating sewing machines, being readily regulated and controlled by
the attendant.
The said Invention consists in combining with a train of gearing
and a coiled spring certain novel devices for winding up the spring
and for putting on and stopping the power transmitted therefrom at
pleasure.
The said Invention further consists in combining with the frame of
a sewing machine novel and simple means for winding up the coiled
spring, from which through suitable gearing motion is imparted to the
pulley or hand wheel shaft, the winding device being certain, noiseless,
and serving as a lock to prevent the unwinding of the spring without
the use of a ratchet wheel and spring pawls.
The said Invention also consists in a brake for controlling the motion
of the needle arm of a sewing machine more easily, either to stop
and start it or to regulate the speed thereof to suit the work and the
requirements of the operator.

page_text: the opposite side of the same; Figure 3 represents an end elevation of
the motor, one end of its frame being removed; Figure 4 represents
an elevation of the opposite end of the same; Figure 5 shews a detached
portion of the said Invention drawn to an enlarged scale.
The mechanism of the motor may be supported by and secured within
a suitable compact frame adapted to receive the journal bearings for
the train of gearing. The frame shewn as above stated is that of a
sewing machine with its table A and standards B; below the said
table revolves the transmitting shaft C carrying the hand belt and
brake wheels a, b, c, respectively and the gear wheel d. The spring
case F is mounted in the lower portion of the frame between the two
standards B and E, the latter being bent at e toward the end B above.
the said spring case to diminish the length of the gear wheel shafts
which receive motion from the gear wheel of the spring case. The
frames B are held together by the rod D; this rod supports the additional.
standard E through the upper end of which the shaft C passes, and which,
standard E is secured at its top to the standard B, and thus forms a
support for the motor. The latter consists of a pinion d on the trans--
mitting shaft C and a cog wheel d' on the spring case F and intermediate
pinions d', d³, d³, d³, d³, through which motion is imparted to the
transmitting shaft C through the cog wheel & of the spring case. This
train is arranged in a very compact manner and occupies a com-
paratively small space above the spring case. The spring or springs
must be secured by one end to the case and by the other to the shaft f
on which the case revolves freely. A worm gear wheel g is secured on
the shaft outside of the case and gears with a worm g' on a vertical
shaft G, which is stepped in bearings h, i, on the standard B; the step i.
is adjustable for the said shaft G, or to allow of its removal when desired.
The shaft G carries at its upper end a bevel cog wheel H which gears
with a bevel cog wheel I on a horizontal shaft J provided with a crank.
handle L outside of the frame B. A rod j braces the lower end of the
inner frame. The worm gear 9 and g' allows the spring to be readily.
wound up within its case by means of the bevel gear H and I, but as the
spring cannot turn the worm gear backward it cannot therefore unwind.
through said worm gear, but must remain in a locked position with the
shaft fat whatever point of force the spring may be wound.. This
obviates the necessity for ratchet wheels and spring pawls on the
•

page_text: winding shaft for that purpose. The winding device by this
becomes also the locking device for the spring.
means
In this arrangement the spring case must be held fast during the
operation of winding the spring upon its shaft-f, and for this purpose I
lave arranged in connection therewith a brake device for holding the
said spring case through the train of wheels. This brake in its normal
condition is held against a brake wheel c on the driving shaft C by
means of a spring 1 secured to the frame for that purpose; and as the
spring case is locked through the entire train of gearing it does not
require much pressure. of the brake k to hold the upper pinion d fast
while winding up the spring. In the example shewn the brake kis
pivotted to a rod n, whose lower cnd is connected to a crank n² of a
double crank arm m secured to the standard E; to the other outer crank
of the said arm m the upper end of a rod o is connected, the lower end
of the same being attached to a needle p or other suitable operating
device. The brake k is provided with one or two inclined slots ġ,
through which pins pass from an arm s of the frame E. As the brake
is moved up and down these pins r press it against or move it from the
brake wheel c; the slot or slots must be so arranged in relation to the
face of the brake and the periphery of the brake wheel that the elevation
of the brake does not suddenly but only gradually relieve the friction of
the brake on the wheel. The tilting of the treadle p to raise the brake
against its spring and away from the brake wheel renders the power
free to drive the transmitting shaft c, and the brake will be put on and
the said shaft stopped when the treadle is relcased. By this means it
will be seen that the motor can be controlled at pleasure and the speed
of the transmitting shaft restrained gradually or at once as may be
desired. The treadle p may be made auxilliary to the brake spring 1, so
that the action of the brake will be rendered positive to stop the trans-
mitting shaft C at any moment. The transmitting shaft C may be
connected in any suitable manner with the apparatus to be driven. To
wind up the power the crank handle L is placed in position on the short
shaft J, and being operated turns the vertical shaft G and through the
worm g¹ on the latter, and the worm gear wheel 7 on the shaft winds
upon this shaft the coiled spring. The brake is on during this winding
and holds through the several gear wheels the case F, thus preventing
the revolution of the latter while the spring is being wound up. The

page_text: Fourth. In combination with the brake k the spring and brake
wheel c, the rods n, o, double rock arm m, and treadle p, arranged to
operate as described.
In witness whereof, I, the said George Haseltine, have hereunto set
my hand and seal, this Twenty-ninth day of November, in the
year of our Lord One thousand eight hundred and seventy-two.
•
Witness,
W. ROB. LAKE,
8, Southampton Buildings,
London.
GEORGE HASELTINE. (L.S.).