AN IMPROVED APPARATUS FOR AUTO- MATICALLY SPOOLING OR WINDING THREAD FOR SHUTTLE SEWING MACHINES
Year: 1879

page_text: LETTERS PATENT to John Kayser, of Kaiserslautern (Palatinate of the Rhine),
"
German Empire, for the Invention of AN IMPROVED APPARATUS FOR AUTO-
MATICALLY SPOOLING OR WINDING THREAD FOR SHUTTLE SEWING MACHINES.”
Sealed the 12th August 1879, and dated the 12th February 1879.
PROVISIONAL SPECIFICATION left by the said John Kayser at the Office of
the Commissioners of Patents on the 12th February 1879.
JOHN KAYSER, of Kaiserslautern (Palatinate of the Rhine), German Empire.
"AN IMPROVED APPARATUS FOR AUTOMATICALLY SPOOLING OR WINDING THREAD
FOR SHUTTLE SEWING MACHINES."
This Invention relates to improved apparatus for automatically spooling or
winding thread for shuttle sewing machines.
The said apparatus, which may form an attachment to or part of a sewing
machine, is constructed as follows, that is to say :-I provide a bow shaped or
curved piece which is movable up and down its lower part, or a prolongation
thereof sliding in a tubular piece or box fixed upon or forming part of the ordinary
frame of the sewing machine. A spiral spring within the said tubular piece serves
to continually press the said bow shaped piece upward. In the said bow-shaped
piece there is a revolving spindle which is provided with screw threads on the
upper end and gears into a worm wheel, causing the latter to revolve around its
axis. A small bevelled india-rubber or toothed wheel is fixed on the lower end of
the said spindle, and is driven by a small wheel fixed on the driving shaft of the
sewing machine.
If desired the said apparatus may be driven direct from the fly wheel on the
sewing machine.
The shuttle-spool on which it is desired to wind is placed in the aforesaid bow
shaped piece and pressed into the said spindle by means of a light spiral spring and
thus caused to revolve with the spindle. Having fixed the spool the said bow-
shaped piece is pressed down, both the aforesaid small wheels are brought into
contact, and the winding motion required is obtained; a lever is provided to keep
11

page_text: the said bow-shaped piece in this position, and is always pressed gently against the
spool by means of a light spiral spring. This lever is provided with a small
projection which keeps the bow-shaped piece firmly pressed down.
When the spool-is-filled.it forces the aforesaid lever back, the said small projection
liberates the bow-shaped piece, and the first named spiral spring forces-it-upward,
the small wheels are put out of gear, and the apparatus is stopped.
In the aforesaid worm wheel-there-is-a-groove which gives to a lever an up and
down motion, a small friction-roller-on-the.said lever fitting to the said groove; the
lever-is therefore operated in such a manner that the thread is compelled to wind
evenly upon the spool. The lower-cylindrical-end-of-the aforesaid bow-shaped
piece is provided with a pin in order to prevent the same from revolving.
-One-advantage of this apparatus is that the sewing machine to which it is
attached is not required to be worked specially for spooling or winding as heretofore,
and the machine is therefore used less and time is saved. As the spool is wound
with thread whilst the operation of sewing is going on the operator has always a
spool with thread thereon for the shuttle, and the spool is filled by the said appa-
ratus in a more even and regular manner than is the case when the spool is filled
by hand, and this facilitates the operation of sewing.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Kayser in the Great Seal Patent Office on the 12th August
1879.
JOHN KAYSER, of Kaiserslautern (Palatinate of the Rhine), German Empire.
"AN IMPROVED APPARATUS FOR AUTOMATICALLY SPOOLING OR WINDING THREAD
FOR SHUTTLE SEWING MACHINES."
The object of my Invention is to produce an apparatus for spooling thread which
shall not necessitate the machine being worked specially for the purpose, and which
shall, when in gear, wind the thread on the spool as it is drawn off the supply, the
operator thus always having a spool filled for the shuttle, and one in better
proportion than if filled by hand.
For full comprehension of the Invention reference must be had to the annexed
Drawings, in which similar letters of reference indicate like parts, and where
Figure 1 is a side view, partly in section, of the Invention showing the parts in
gear.
Figure 2 is a side view showing the parts when the device is not operating ;
Figure 3 is a sectional elevation taken through arm and showing front view of
Invention; and Figure 4 is a view looking down, showing periphery of wheel.
a is a bow or standard of the form shown attached to and movable up and down
with a vertical pin d carried in proper bearings b formed on the arm of the sewing
machine; on its lower end being secured a friction wheel ƒ made preferably, as
shown, with a periphery of india-rubber or other like substance, the pin & being of
such length that when pressed down this wheel ƒ will come in contact with and be
rotated by a corresponding wheel keyed on the needle bar, which is operated either
as shown in Figure 1 or in any suitable manner.
A spiral spring c between the top of the arm and a shoulder formed on the
spindle d holds the latter up, opposing a yielding resistance to downward pressure,
and on the upper end is formed a worm d¹ intermeshing with and rotating a
toothed wheel e with concave periphery, the spindle of which is, as shown in dotted
lines in Figure 3, carried in bearings formed in the standard a; g is the spool set
on the upper end of the pin d secured in place by a pin held down by a spring h
situated in the head of the bow a; m is a lever pivotted to the frame a and moved
up and down by means of a roller n working in a cam groove formed in the
wheel b the thread o passing from the supply through an eye formed in the free
end of the lever, so as to be wound up proportionally on the spool, all as shown in
Figure 3.
It will easily be understood that when the bow is pressed down so as to bring
the wheel f in contact with the wheel on the horizontal shaft the spindle & will be
rotated, thus winding up the thread on the spool, its arrangement thereon in the
arc of a circle being provided for by the movement of the lever m receiving its
motion from the cam wheel e rotated by the worm d¹. The bow is prevented
from turning by a pin p, shown in Figure 1; i is a lever pivotted to a projection
of the bearing b, and, as shown in Figures 1 and 2, having a small dog on its
inner edge which engages with a shoulder or ring formed on the spindle d, and
holds it down by the force of the spring / pressing against the underside of this
lever. When the spool is filled the upper end of the lever is pressed back and the
dogdisengaged from the shoulder of the spindle d, which, by the action of the
spring c, is raised, thus throwing out of contact the friction wheels and stopping
the operation of spooling.
Having thus described the nature of my said Invention, and the manner of
carrying the same into operation, I would have it understood that what I claim is
as follows:-
1st. The combination with the needle bar of a sewing machine of the spindle d,
carrying spool g held up by spring c, and friction wheel f, put in gear at will with

page_text: driving mechanism of machine, all substantially as hereinbefore set forth and
described.
2nd. In combination with the spindle d rotated at will the bow a carrying the
wheel e which receives motion from worm d¹ and operates lever m, substantially as
-and-for the purposes herein before set forth and described.
3rd.In combination with the rotating-spindle & the lever i with shoulder and
-spring-k-arranged-and-operating-as-and-for-the-purposes herein before set forth and
described