Improvements in the Shuttle Mechanism of Oscillating Shuttle Sewing Machines.
Year: 1886

page_text: Date of Application, 25th Oct., 1886.
Complete Left, 25th July, 1887.
Complete Accepted, 30th Aug., 1887.
Improvements in the Shuttle Mechanism of 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
"IMPROVEMENTS IN THE SHUTTLE MECHANISM OF OSCILLATING SHUTTLE SEWING
MACHINES to be as follows:-
"
This invention has reference to sewing machines with an oscillating shuttle which
passes through the loop of the upper thread in performing a movement through a
portion of a circle. Such a shuttle, the length of which should not exceed one third
of the length of the circular path in which it is mounted demands a peculiar guidance
to prevent a clogging of the thread upon the passage of the shuttle through the loop,
for which purpose we provide a circular shuttle plate or holder into one of the faces of
which we turn a recess, over which-when a projecting end of the shuttle has been
placed in the same is screwed a ring formed with a recess which comes over and
meets the recess in the face of the shuttle plate or holder, in such a way that the
shuttle may by its projecting end move freely along the path so formed without
being able to escape therefrom.
This arrangement of suspended shuttle allows of the same being conveniently driven
through the loop of the needle thread by a driver acting from the centre of the
shuttle plate or holder.
That the orth love of Antahan 100C
CAPITAINE & VON
HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.

page_text: Improvements in the Shuttle Mechanism of 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
"IMPROVEMENTS IN THE SHUTTLE MECHANISM OF 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 :-
"
This invention has reference to sewing machines with an oscillating shuttle which
has to pass through a loop of the upper thread in performing a movement through
a portion say one-third of a circle. Such a shuttle, the length of which should
not exceed one third of the length of the circular path in which it is mounted
requires special guidance to avoid clogging of the thread upon the passage of the
shuttle through the loop, for which purpose we provide mechanism such as is shewn in
the accompanying drawing in which Fig. 1 is a part sectional elevation of so much
of a sewing machine as is necessary to illustrate the application of our invention and
the remaining figures shew the details of construction. a is a ring shaped shuttle
plate or holder in which the shuttle b moves. c shuttle driver. The shuttle b is
guided in the shuttle plate or holder a by a groove b¹ formed in the shoulder 6³ on its
inner or needle side, the shuttle holder a being bored or turned with a corresponding
circular groove a¹ so that the shuttle may by it be suspended in the shuttle holder as
shewn in Figs. 1, 2 and 4. By this means the shuttle may be readily put in its
place within the holder and held freely suspended therein and by the aid of a ring
plate screwed on to the shuttle holder in two parts e, e¹, it may without any further
support be driven along its circular path so as to pass freely through the loop of the
needle thread.
The position of the needle is from one to two millimetres behind the circular
groove a¹ and the shuttle point glides by the needle in the free space of the shuttle
holder underneath such circular groove, so that as soon as the shuttle point
enters the loop of the thread, the preceding loop is raised by the shuttle out of the
needle channel over the circular groove a¹ whilst the back thread of the loop in a
lateral recess of the needle channel situated behind the circular groove swings round
the shuttle. In order to be able readily to remove the shuttle for changing the
bobbin the construction shewn in Fig. 2 is designed. Here on a shaft w is mounted a
two arm oscillating lever vone end of which is in connection with the finger-press
rod t by a joint whilst the other arm bears against a studs in the ring plate e. The
double lever vis formed with a cam u which presses a stud x held in its place in the shuttle
holder a by a spring. When the shuttle has to be taken from the holder, it is turned
round until it comes opposite the stud x, and then the rod t is pressed down, the
result of which is, that the double lever v by its arm bearing against the studs turns
round the ring plate e on its pivot y and leaves the shuttle freely accessible, further

page_text: that the cam u of the double lever pushes the stud underneath the shuttle band
lifts this latter from the ring groove a¹ in such a way that the shuttle falls out of the
shuttle holder. A spring acting at z upon a stud in the ring plate e, brings-when
the finger press rod t is released from pressure--the ring plate and double lever back
into its former position.
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 shuttle plate or shuttle holder a with the circular turned groove a¹, in
combination with the shuttle b and recess b¹ turned in the side of the same for the
purpose of guiding, carrying, or suspending the shuttle in the vertical shuttle holder
substantially as described and shewn.
2. For the purpose of removing the shuttle b from the shuttle holder a, the
arrangement of a double lever v provided with a cam or projection u, the said double
lever turning on a shaft and being jointed to a press rod t in combination with the
studs fixed in the ring plate e and the spring stud x in the shuttle holder a
substantially as described and shewn.
CAPITAINE & VON HERTLING,
89, Chancery Lane, London, W.C.,
Agents for the Applicants.