IMPROVEMENTS IN SEWING MACHINES
Year: 1878

page_text: LETTERS PATENT to Philipp Adam Kautz, Engineer, in the City of Hamburg
Germany, for the Invention of "IMPROVEMENTS IN SEWING MACHINES."
PROVISIONAL SPECIFICATION left by the said Philipp Adam Kautz at the
Office of the Commissioners of Patents on the 25th February 1878..
PHILIPP ADAM KAUTZ, Engineer, in the City of Hamburg, Germany.
MENTS IN SEWING MACHINES."
"IMPROVE-
This Invention relates to sewing machines of the Wheeler and Wilson system, and
consists in the following improvements
:-
Firstly. I use an intermediate shaft furnished with a fly wheel for transmitting
the motion to the bar, which carries the needle (needle arm), and to the axle of the
looper. The fly wheel is connected to a pulley, or it is formed as a pulley, and is
driven by means of a strap or by belting from the pulley connected to the frame
and treadle. The arm carrying the needle is moved by means of an excentric
and excentric rod, the former being fastened to the intermediate shaft, while
the axle of the looper is driven from the intermediate shaft by means of conical
wheel gearing.
Secondly. Of a new feeding bar and adjusting stop for regulating the length of
the stitch. The feeding bar is constructed of one straight piece of flat iron, while
this bar was with all former constructions of this system of sewing machines
of a bent or curved shape. The feed or length of stitch is regulated by an
adjusting lever, the position of which to the feeding bar can be regulated by means
of a screw.
Thirdly. The spooling-up apparatus is removed from the shaft or axle of the
looper and attached to the fly wheel of the intermediate shaft. It may be cast in
one piece with the pulley, and the latter can be disengaged from the axle, and turns
then loosely on the saine. The advantage that results from this construction is
Price 1

page_text: that only the parts necessary revolve during the spooling-up of the thread,
and less wear and tear will be caused than with the former constructions.
The different improvements before described are of great importance with this
system of sewing machines, and my improved machine will sew much thicker mate-
rial than the machines hitherto in use, and the adjustment of my machines is less
difficult than before.
SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Philipp Adam Kautz in the Great Seal Patent Office on the 24th
August 1878.
PHILIPP ADAM KAUTZ, Engineer, in the City of Hamburg, Germany.
MENTS IN SEWING MACHINES."
"IMPROVE-
This Invention is specially applicable to sewing machines constructed according
to the system known as Wheeler and Wilson," and is as follows:-
"
Firstly. I make use of a countershaft fitted with fly wheel for the working of the
needle arm and the spindle for the looper or hook.
Secondly. My Invention consists in new stitch regulator.
Thirdly. The spool appliance is separated from the spindle of the looper or hook
and fastened on to the fly wheel on the aforesaid countershaft.
Figure 1 of the accompanying Drawings is a side view of a machine constructed
according to this my Invention; Figure 2 is a front elevation, and Figure 3 a plan
of same.
In these machines the driving power has heretofore been first applied to the hook
spindle a, and thence transmitted to the separate parts of the machine. According
to this Invention, however, I make use of a countershaft c, carrying a fly wheel B,
and revolved by strap or gut; C is the needle arm, which is moved up and down
from the countershaft c by means of the eccentric D; the hook spindle a is caused
to revolve by means of two sets of bevil wheels, and by the intermediate spindle d
from the countershaft c. By this construction I attain an easier and more uniform
motion of the machine, which thereby is enabled with equal facility to work
much thicker materials than heretofore usual, while at the same time suitable
for ordinary or thin materials; it thus becomes a universal sewing machine.
The spool appliance heretofore fastened to the hook spindle is here united to the
fly wheel, which is in one with the V pulley e for a round driving strap or gut; i is
a carrier or steady pin for holding the fly wheel on the shaft; when it is removed
the fly wheel can run loosely on the shaft when the spool is to be refilled, without
moving the other parts of the machine as heretofore necessary.
The improvements relating to the stitch regulator and feeder consist in that the
feed bar or pusher is made of one flat piece of iron, and in that the amount of feed
is limited as required, or regulated by means of a screws acting against the lever l;
near its fulcrum the outer end of the lever acts against the feed bar r. By the

page_text: direct pressure of the lever against the feed bar r, the canting or unequal working
of the latter in its bearings is done away with, thereby ensuring more accurate
working and less wear of the stitch regulator. This stitch regulator has also the
advantage over the one heretofore used that it is easier regulated.
The arrangement of the several parts of this machine is such that the final
setting or adjustment for work is much easier than in machines where the
eccentric for the working of the needle arm is on the same spindle as the hook or
looper.
And having thus described and ascertained the nature of this my said Invention,
and in what manner the same is to be performed, I declare that I claim,—
Firstly. The employment of a countershaft with fly wheel, and the transmission
of the power from that shaft to the needle arm and to the spindle for the hook or
looper, in machines of the Wheeler and Wilson system, all substantially as described,
and as illustrated in the accompanying Drawings.
Secondly. The construction of the stitch regulator, substantially as described and
shown.
And, Thirdly. The application of the spool appliance to or on the fly wheel, as
set forth, whereby the spool can be refilled without moving the rest of the machine,
as has heretofore been necessary with spool hook sewing machines.
In witness whereof, I, the said Philipp Adam Kautz, have hereunto set my
hand and seal, this Twelfth day of August, in the year of our Lord One
thousand eight hundred and seventy-eight.
PHILIPP ADAM KAUTZ.
(L.S.)