An Improved Manufacture of Woven Fabrics and Mechanism Employed in Connection with Looms for that Purpose.
Year: 1888

page_text: An Improved Manufacture of Woven Fabrics and Mechanism
Employed in Connection with Looms for that Purpose.
We, SERGIUS DOBROFF and GOTTLIEB NABHOLZ trading under the firm Dobroff and
Nabholz of Tatarskaya Street, Moscow, Engineers, and SAMUEL THOMPSON, Weaver
Master, of Alexandrov, Government of Vladimir, all in the Russian Empire, do
hereby declare the nature of this invention to be as follows:-
The object of this invention is to cause the weft thread, as it is thrown in the
shed of a loom by the shuttle, to lie in an unstretched or loose condition so that
when it is beaten up by the lathe, it will have little or no tension upon it, and
consequently, the fabric will be less liable to shrink than fabrics of ordinary
manufacture.
The invention consists essentially in causing the weft thread, while being thrown,
to be held by needles, fingers, or hooks, at one or more points of the shuttle race, so
that the thread instead of lying in a straight line or in a stretched condition in
the shed, lies in a more or less angular position, forming a broken line the thread
being released by the needles or fingers as soon as the shuttle has completed its
course, so as to lie in a loose or unstretched condition as before stated, while it
is beaten up by the lathe.
The accompanying drawing shews arrangements by which the above described
invention may be carried into effect.
In the arrangement shewn at Figs. 1, 2, and 3, there are provided needles or
fingers A B which pass through the shuttle race of the lathe, and which are projected up
through the race as the shuttle is thrown, so that the thread becomes caught
behind them, as shewn at Figs. 4 and 6, which shew respectively the right and left
motions of the shuttle.
At the end of the shuttle's stroke, the needles are withdrawn, leaving the thread in
a loose condition, as shown at Fig. 5.
The mode of actuating the needles or fingers for this purpose may be variously
modified.

page_text: Thus, as shewn at Fig. 1, the lower end B of the needle is connected to a bell-
crank lever B, C D pivotted at C to the lathe, its arm CD being jointed to the rocking
arm E D pivotted at E to some fixed part of the loom.
In the arrangement at Fig. 2 the lower end B of the needle is pivotted to the
upper end of a rocking arm B F, the lower end of which is pivotted at F to some
fixed point of the loom.
In the arrangement at Fig. 3, the lower end of the needle B has a stud that works
in a cam groove or slot in an arm G H fixed to the loom frame, the groove being so
formed that as tho lathe makes its backward motion, and while the shuttle is being
thrown, the needles are projected upwards, and while the lathe moves forward, they
are withdrawn.
The needles or fingers may either bo actuated by separate mechanisms or they may
all be worked by one and the same mechanism.
It will be evident that the needles, fingers, hooks, or other appliances for con-
secutively holding and releasing the thread may be arranged and actuated in various
other ways for the purpose of the above described invention.
Dated this 31st day of March 1888.
ABEL & IMRAY,
Agents for the Applicants.

page_text: and mechanism
Employed in Connection with Looms for that Purpose.
We, SERGIUS DOBROFF and GOTTLIEB NABHOLZ trading under the firm Dobroff and
Nabholz of Talarskaya Street, Moscow, Engineers, and SAMUEL THOMPSON, Weaver
Master, of Alexandrov, Government of Vladimir all in the Russian Empire, do hereby
declare the nature of this invention and in what manner the same is to be performed
to be particularly described and ascertained in and by the following statement :-
The object of this invention is to cause the weft thread as it is thrown in the shed
of a loom by the shuttle to lie in an unstretched or loose condition so that when it is
beaten up by the lathe it will have little or no tension upon it and consequently the
fabric will be less liable to shrink than fabrics of ordinary manufacture.
The invention consists essentially in causing the weft thread, while being thrown,
to be held by needles, fingers or hooks, at ono or more points of the shuttle race, so
that the thread instead of lying in a straight line in the shed, lies in a more or
less angular position, forming a broken line the thread being released by the needles
or fingers towards the ends of the shuttles stroke so as to lie in a loose or unstretched
condition as before stated, while it is beaten up by the lathe.
The drawing accompanying our provisional specification shews arrangements by
which the above described invention may be carried into effect.
In the arrangement shewn at Figs. 1, 2 and 3, there are provided needles or
fingers A B which pass through the shuttle race of the lathe, and which are projected
up through the race as the shuttle is thrown, so that the thread becomes caught
behind them, as shown at Figs. 4 and 6 which shew respectively the right and left
motions of the shuttle.
Towards the end of the shuttle's stroke the needles are withdrawn leaving the
thread in a loose condition as shewn at Fig. 5.
The mode of actuating the needles or fingers for this purpose may be variously
modified.
Thus, as shewn at Fig. 1 the lower end B of the needle is connected to a bell
crank lever BCD pivotted at C to the lathe, its arm CD being jointed to the rocking
arm E D pivotted at E to some fixed part of the loom.
In the arrangement at Fig. 2 the lower end B of the needle is pivotted to the upper
end of a rocking arm B F the lower end of which is pivotted at F to some fixed
point of the loom.
In the arrangement at Fig. 3 the lower end of the needle B has a stud that works
n a cam groove or slot in an arm G H fixed to the loom framo, the groove being so
ormed that as the lathe makes its backward motion, and while the shuttle is being
hrown, the needles are projected upwards, and while the lathe moves forward they
re withdrawn.
The accompanying drawing, Fig. 34 shews a modification of the arrangement just
escribed in which the arm G H is replaced by the guide T against which presses the

page_text: end B of the elbow lever B, C, D, while the end D of this lever is drawn towards
the lathe by a spiral spring.
The needles or fingers may either be actuated by separate mechanisms or they may
all be worked by one and the sanic mechanism.
It will be ovident that the needles, fingers, hooks or other appliances for con-
secutively holding and releasing the thread may be arranged and actuated in various
other ways for the purpose of the above described invention.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed wo declare that what
we claim is :-
1. An improved manufacture of woven fabrics wherein the weft thread is loosened
after it is thrown in the shed so as to lie in an unstretched condition in the fabric,
substantially as herein described.
2. In looms, the use of one or more needles fingers or hooks which are moved in
respect to the lathe of the loom in such a manner that the weft thread, while being
thrown, becomes caught by them and is left free again towards the end of the shuttle's
stroke so as to lie in a loose or unstretched condition while it is beaten up by the lathe
substantially as herein described.