AN IMPROVED APPLICATION AND ARRANGEMENT OF BRAKE FOR LOOMS FOR WEAVING
Year: 1884

page_text: for Weaving.
We, THOMAS NORTON, of Nortonthorpe and Cuttlehurst Mills, Denby Dale, near
Huddersfield, in the County of York, Manufacturer of Fancy Cloths; and JAMES
HENRY HELLEWELL, of Kitchen Royds, Denby Dale, aforesaid, Foreman Mechanic
do hereby declare the nature of the above invention for AN IMPROVED APPLICATION
AND ARRANGEMENT OF BRAKE FOR LOOMS FOR WEAVING, to be as follows :—
In the case of looms weaving looped fabrics with wires inserted mechanically the
maximum speed at which the looms have heretofore been run has been governed
by the speed at which the ingoing wire could be inserted into the "shed."
Our invention has for its object the running of looms at a quicker speed
& providing means for temporarily slowing down the motion during the time the
wire is being inserted; thus rendering a loon capable of turning out more work in
a given time.
We accomplish this as follows; At the moment, or shortly before, the wire is
being inserted into the "shed" a cam presses down a lever, which is so coupled by
suitable means to the belt guide, that the belt is thrown over-more or less-on to
the loose pulley; this lever, at the same time, puts into action a brake acting on a
wheel fixed on any such revolving shaft as may be found convenient. The intensity
of the action of the brake, and the distance through which the strap is moved on
the loose pulley, is regulated by screws, or other equivalents. The time at which
the braking action is to commence is governed by the position of the cam on the
shaft, which position may be varied; and the length of time during which the
brake action is to be maintained is governed by the formation of the cam, and if
found necessary the cam may be provided with an adjustable tail piece so that the
length of time during which the brake acts may be regulated to suit varying
exegencies.
This temporary slowing gear is applicable to any loom requiring, for any reason,
a temporary slackening of its speed at any point or points of its action; and
therefore its application to any loom thus circumstanced will permit any such loom
to be driven at a quicker general speed.
"Slowing" can, of course, be done by means of gearing, but our invention
provides a ready means of applying, of regulating, and of adjusting a slowing
inotion to suit varying conditions in the same loom.

page_text: for Weaving.
We, THOMAS NORTON, of Nortonthorpe and Cuttlehurst Mills, Denby Dale, near
Huddersfield, in the County of York, Manufacturer of Fancy Cloths; and JAMES
HENRY HELLEWELL, of Kitchen Royds, Denby Dale, aforesaid, Foreman Mechanic,
do hereby declare the nature of our invention for AN IMPROVED APPLICATION
AND ARRANGEMENT OF BRAKE FOR LOOMS FOR WEAVING, and in what manner
the same is to be performed, to be particularly described and ascertained in and by
the following statement:-
In the case of looms weaving looped fabrics with wires inserted mechanically the
maximum speed at which the looms have heretofore been run has been governed
by the speed at which the ingoing wiro could be inserted into the "shed."
Our invention has for its object the running of looms at a quicker speed and
providing means for temporarily slowing down the motion during the time the
wire is being inserted; thus rendering a loom capable of turning out more work in
a given time.
We accomplish this as follows:-At the moment, or shortly before, the wire is
being inserted into the "shed" a cam presses down a lever, which is so coupled by
suitable means to the belt guide that the belt is thrown over-more or less-on to
the loose pulley; this lever, at the same time puts into action a brake acting on a
wheel fixed on any such revolving shaft as may be found convenient.
The intensity of the action of the brake, & the distance through which the
strap is moved on the loose pulley, is regulated by screws, or other equivalents.
The time at which the braking action is to commence is governed by the position
of the cam on the shaft, which position may be varied; and the length of time
during which the brake action is to be maintained is governed by the formation of
the cam; & if found necessary the cam may be provided with an adjustable tail
piece so that the length of time during which the brake acts may be regulated to
suit varying exigencies.
The temporary slowing gear is applicable to any loom requiring, for any reason,
a temporary slackening of its speed at any point or points of its action; & therefore
its application to any loom thus circumstanced will permit any such loom to be
driven at a quicker general speed.
"Slowing" can, of course, be done by means of gearing, Lut our invention
provides a ready means of applying, of regulating, and of adjusting a slowing
motion to suit varying conditions in the same loom.
In order the more fully to explain the mode in which we put our invention into
practice we have annexed two sheets of drawings. Figs. 1 & 2, sheet 1, are
respectively end, & side elevations, whilst Fig. 3, sheet 2, is a plan of our mechanism,
applied to the end of a loom capable of being driven, backward & forward, by
means of the bevelled pinions K' & Kª, mounted on the shaft L, acting on the
bevelled wheel M, mounted on the crank shaft V².
O is the picker shaft on which is keyed the wheel W, driven by its pinion W' at
any desired ratio, here shown at 1 to 2.
Riding on the shaft O, is a sleeve O¹, carrying the wheel V, driven by its
pinion V, at any desired ratio, here shown at 1 to 3. On this same sleeve is fixed
the cam T which puts the slowing motion into action.

page_text: We prefer to bolt this cam against the boss of the wheel V, or against any other
fixed boss, provided with a number of finely divided radiating teeth which will
interlock with similar teeth on the side of the cam. This connection, which is
in common use, is useful for adjusting the "angular advance." If adjustments
are required on this cam for varying the length of the time during which the
action of the brake is to be sustained we prefer to split it, in its plane of revolution,
so that one portion may be bolted in the rear of the other, thus the "rise" of the
cam remaining the same whilst the "fall" is retarded. Here the multiple cam T
is shown in two parts and one or more bolts N, provided with slots, are arranged
for this adjustment. If the cam is a simple single one a mere tail piece bolted on
the side of the main cam will be sufficient.
The cam T, acting on the roller T¹, fixed on the lever T2, moves the belt P
wholely or partly on to the loose pulley U* & puts on the brake T". After the
cam has passed a spring or springs restore the former conditions & the loom runs
on as before.
It will be seen that the rod U is connected to the belt guide lever U¹ which has
its fulcrum Us on the belt bar Uº. If necessary an adjustable slot may be made on
the lever U¹ to recieve the head of the rod U. It will also be seen that the
connections are so made at its foot that the rol U will swing & allow the belt
lever Us to be moved across by the attendant so as to bring the belt either on to
the loose pulley U*, or on to the "backward" pulley To.
The belt guide lever U is provided with a projecting stop Q and a spring Q',
for the purpose of returning the belt correctly on the "forward" pulley U³ when
the action of the cam has ceased.
The rod T leading from the brako lever T2 connects up to the brake T'. In
this case the brake arm itself is shown (see Fig. 2) bolted to the side of the framing
in such a manner that it forms a spring & stands clear of the brake wheel T
except when depressed by the action of the cam. The rod T is provided both at
head & foot with nuts for adjusting, and similar nuts are also provided at the foot
of the rod U: by these means the lever T may be raised, or depressed, so as to
bring the roller T¹ more or less into contact with the cam T, & thus, with the
aid of the slot in the belt guide lever, regulate both the distance through which
the belt is moved, & the intensity of the action of the brake.
The belt bar U is shown connected up by the lever U' to the automatic spring
knock-off bar Us, thus showing how the automatic stop motion can be coupled up
to our slowing motion.
Reverting to the cam T-In cases in which the brake is required to act at
regular intervals only, one rise on the cam will satisfy such a condition, if the
sleeve O is geared to suit such intervals. However, cases will arise in which a
variation is requisite. To meet these cases a multiple cam is arranged with such
a number of "rises" as proves practicable but the roller T' is kept out of contact
except when the brake is required to act.
In this case, shown on the drawings, the cam is arranged with three "rises" and
the roller T is kept out of gear by the lever & spring R&R. If the end of the
lever R³ be depressed when the brake action is required the next "rise" will act
on the brake lever. This depressing of the lever R may be brought about by
star-wheel gearing, acting in conformity with the times at which wires are to be
inserted, as fully set forth in our Patent, N° 16271. A.D. 1884, or with other
intervals requiring a "slowing" motion-The same letters refer to the same
parts in each figure.
Having now particularly described & ascertained the nature of our said
invention, & in what manner the same is to be performed, we declare that what
we claim is
1. The method of momentarily "slowing" the speed of a loom, automatically,
by the joint action of a brake & belt motion, applied for the purpose of running
|the loom at a quicker geueral speed, with the object of getting more work out of

page_text: the same loom than would otherwise be possible; which method is shown carried
into effect in & by the apparatus described & shown on the drawings.
2. The lever Tacted upon by a cam T (which latter may be single or multiple-
fixed or adjustable, as described) in double combination, first, with the adjustable
rod U joining up to the belt guide lever U1 (with or without an adjustable slot)
with its stop & spring Q; &, secondly, with the adjustable rod Ts joining up to
the brake T & its spring (formed in itself if preferred), with the object & for the
purpose set forth, substantially as described & shown on the drawings.
3. The combination of a multiple cam T with the lever R for the purpose of
throwing the roller T' in & out of gear so as to make the "slowing" motion act
only at the time required, substantially as described & shown on the drawings.
4. The combination of a star-wheel with the lever R³ & the multiple cam T for
producing an intermittant action of the brake when required, substantially as
described & shown on the drawings.
5. The combination of this our slowing gear with the well known stopping
motion by connecting the bolt guide lever U with the lever U coupling up the
Automatic spring stop bar U³ to the belt-guide, substantially as described & shown
on the drawings.
6. The apparatus forming the complete Automatic Slowing Gear constructed,
arranged, & operated as described & shown on the drawings, with the object & for
the purpose specified.