IMPROVEMENTS IN SEWING MACHINES FOR SEWING STRAW PLAIT AND OTHER MATERIALS
Year: 1875

page_text: PROVISIONAL SPECIFICATION left by Louis Heinrichs at the Office
"
of the Commissioners of Patents, with his Petition, on the 7th
September 1875.-A communication from abroad by Richard
Schwalbe, of Plauen, near Dresden, in the Kingdom of Saxony.
I, LOUIS HEINRICHS, of Luton, in the County of Bedford, do hereby
déclare the nature of the said Invention for "IMPROVEMENTS IN SEWING
MACHINES FOR SEWING STRAW PLAIT AND OTHER MATERIALS," to be as
follows:-
--
This Invention relates to improvements in sewing machines of the
character described in the Specifications of Letters Patent, granted to
A. V. Newton, dated 30th August 1863, No. 2151, and to E. T. Hughes,
dated 7th of June 1867, No. 1677, in which a vertical needle is arranged
to work in combination with two transmitters moving in curves. Other:
machines have also. been arranged with apparatus acting in place of
transmitters.
According to these improvements sewing machines of this character
aro arranged with a vertical needle, and with one steel and one stuff
transporter, both being straight.
馨
1

page_text: The novel and peculiar features of these improvements are as follows,
reference being made to the Drawing hereunto annexed :—
First. The direction of motion A, B, of two straight leading trans-
mitters acting in a plane perpendicular to the needle by which the
machine and its action is greatly simplified.
Second. The back and sideway inclination of the needle point for the
purpose of avoiding the slipping off the strips of plait bent around the
-roller; and the equalisation or distribution of the lower thread on one
and the same side. The thread groove of the needle always presents a
point inclined to the right, either being turned to the face or with thread:
groove.
Third. The transmitters are adjustable outside of the machine by
means of tongues or links Z, which are regulated by screw S, eccentric E,
and index disc I.
°
Fourth. The application to flexible or elastic materials C, such as.
caoutchouc, leather, felt, or cloth, which are applicable for the purpose
of acting as transmitters for sewing hat or straw plait, riband, trimmings,
and the like.
Fifth. The universal adjustment of the presser foot F, according to
the character of braiding and the size or number of the needle employed; ;
thus, backward movement to draw back the roller from the needle;
forward movement to approach the roller so as almost to touch the
roller and needle; movement to the right so as to approach and slightly
overlap for coarse braidings; movement to the left, short of the needlo
for sewing fine braidings governed with regard to time and lightness of 2
materials; inclined oblique movement backwards, and inclined oblique
movement forward, as an auxiliary combination according to require-
ments.
Hitherto a limit has been drawn in respect of the choice of braidings
for machine sewings, which could not be overstepped on account of the a

page_text: The application of an elastic material which adapts itself to the
unevenness between the sewn on and to be sewn on strip by yielding and
adhering at the same time to the long stitch thread serves as a substitute
for the softness of the hand, thereby maintaining the gloss and producing
superior work.
The vulcanized rubber press foot is most advantageous as a feeder for
braidings, as it is less liable to wear and tear than steel holding in place
of rubbing the material.
Ordinary transmitters made of steel or cast iron are not available for
sewing fine braidings, because on one side the stitch hole step is in the
way, and on the other side the tile-like formed layers of the braidings
cause a small ridge by which the bite is lost.
Amongst other advantages of the india-rubber transmitters, the lifting
of the steel toothed blades for certain braidings may be avoided, as a
broad india-rubber transmitter pushes the work without being looked
after, and long stuffs made of yarn without leaving scratch marks, thus
rendering the sewing even of the finest braiding possible.
.