AN IMPROVED CLOTH FEEDING MECHANISM FOR OSCILLATINGCHI SHUTTLE SEWING
Year: 1886

page_text: Date of Application, 25th Oct., 1886.
Complete Left, 25th July, 1887.
Complete Accepted, 26th Aug., 1887.
Sewing
Мастер.
We ALEXIS RIESE and FRIEDRICH QUENSTEDT of No. 134 Skalitzerstrasse, Berlin,
in the German Empire, Engineers, do hereby declare the nature of said invention for
"AN IMPROVED CLOTH FEEDING MECHANISM FOR OSCILLATING
"
MACHINES to be as follows:-
SHUTTLE SEWING
This invention relates to a mechanism for working in a certain and controlled way
the cloth or fabric feeder of oscillating shuttle sewing machines.
For this purpose two shafts or spindles the one passing through the the other are
mosnted so as to receive an oscillating motion from an upper shaft through cranks and
connecting rods. On each of the two said shafts is mounted an eccentric for working
the feeder, one of which serves to raise it and the other to move it forward, the
transfer of the eccentric motion being effected through rods connecting with the
feeder. The forward movement of the feeder is regulated according to the position of
one of the eccentric rods with regard to a slotted lever, along which the free end of
the eccentric rod may be moved and in which it may be fixed or held in any desired
position by means of a set screw the head of which is accessible from the needle plate,
thus allowing of a convenient adjustment of the length of stitch. The upper part of
the set screw is fitted so that it may turn without rising, and the lower part fits into a
hole in the shuttle plate or holder. The screwed part carries a nut which by means of
a pin or pivot projecting therefrom carried in a vertical slot in the shuttle plate or
holder and projecting through the latter engages in a horizontal slot formed in a pin
of the eccentric rod. By this means when the set screw is turned by its head either
to the right or left the nut is either raised or lowered and with it is adjusted the

page_text: *
eccentric rod relatively to the slotted lever, the required advance of the feeder or the
length of stitch being thereby obtained. It will now be understood how the two
eccentrics give the required movement to the feeder, they with their respective shafts
performing only about one third of a revolution, being placed at such an angle to one
another that they raise, advance and lower the feeder and draw it back in proper time
and order. The pauses between the raising and lowering movements for the
horizontal displacement of the feeder are brought about not only by the relative
arrangement of the two eccentrics by also by the relative movements of the two crank
pins of the upper driving shaft.
Dated this 25th day of October 1886.
G
CAPITAINE & VON
HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.

page_text: An Improved Cloth Feeding Mechanism for Oscillating Shuttle
Sewing Machines.
We ALEXIS RIESE and FRIEDRICH QUENSTEDT of No. 134 Skalitzerstrasse, Berlin
in the German Empire, Engineers, do hereby declare the nature of said invention
for " AN IMPROVED CLOTH FEEDING MECHANISM FOR OSCILLATING SHUTTLE SEWING
MACHINES and in what manner the same is to be performed, to be particularly.
described and ascertained in and by the following statement :-
وو
This invention relates to a mechanism for working in a certain and controlled way
the cloth or fabric feeder of oscillating shuttle sewing machines. It is shewn in the
accompanying drawing in which Fig. 1 is a sectional elevation of so much of a
sewing machine as is necessary to illustrate the invention, the other figures referring
to details of construction.
r"
9
For the purpose of driving the cloth feeder two shafts or spindles f and
the one
passing through the other are mounted so as to receive an oscillating motion from an
upper shaft c through cranks and connecting rods. On the shaft f is fixed an
eccentric m and on shaft g an eccentric n. The eccentric m serves for raising the
feeder, an up and down motion being thereby communicated to the friction roller
which is in connection with the lever s. This latter may turn on the shaft w. From
the roller is communicated an up and down motion to the feeder. The eccentric_n
serves for moving the feeder horizontally the transfer of the eccentric motion to the
same being effected through eccentric rod n¹ and link n² which latter oscillates on the
fixed pivot p and at the top engages by an open slot on to a pin projecting from the
end of the feeder rod 6 this rod being also supported by the roller ? and screw b¹.
The amount of its horizontal displacement, that is, the length of stitch is regulated by
the adjustment of the eccentric rod pin z in the link n². In order that such
adjustment may be effected from over the needle plate, an adjusting lever t is arranged
on the shaft w and guided in a segment u; at the other end of the shaft w is fixed a
crank k, within a slot of which engages a pin 2 projecting from the lever h
arranged to oscillate on the shaft f. The other end of the lever / takes on to the
eccentric rod pin z carried in the link n². Upon moving the adjusting levert to and
fro in the segment u the shaft w and with it the crank k will be caused to have an
oscillating movement. By this oscillation of the crank the lever h is oscillated on the
shaft thereby moving up and down the pin z within the slot of the link n². According
as the pin z is adjusted lower or higher in the slot the upper part of the link is moved
through a greater or less space and the feeder rod b-when the shaft g oscillates-a
greater or less horizontal travel. From this it will be seen how the eccentrics m, n
which with their shafts perform only about one third of a revolution, operate the
feeder, only they must be placed on their respective shafts relatively at such an angle
to each other that at the proper time the feeder is raised, advanced, lowered and
finally moved back. The pauses in the motion for the horizontal travel of the feeder
are the result, both of the relative action of the eccentrics m, n and of that of the
double cranks of the upper shaft c.

page_text: Having now particularly described and ascertained the nature of our said invention
and in what manner the same is to be performed, we declare that what we claim is :-
1. The eccentrics m, n and mechanism s, r, and n³, n², b, for transmitting their motion
to the cloth feeder in combination with the oscillating shafts f, g, for the purpose
specified substantially as described and shewn.
2. In the cloth feeding mechanism referred to the means for adjusting the
engagement of the eccentric rod n¹ with the link n² consisting of the adjusting
levert in combination with the shaft w crank k and lever h for the purpose of
regulating the length of stitch from over the needle plate, substantially as described
and shown.
Dated this 25th day of July 1887
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.