An Improved Stop Motion for Looms.
Year: 1894

page_text: Date of Application, 5th June, 1894-Accepted, 7th July, 1894
COMPLETE SPECIFICATION.
An Improved Stop Motion for Looms.
I, KONRAD HÄMIG, Junior, of Pfersee, near Augsburg, in the Kingdom of
Bavaria, Technical Factory Manager, 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 :-
In power looms with rigid reeds, the device at present used for stopping the
batten in case the shuttle remains in the shed, has a very material disadvantage,
namely that whenever the shuttle passes in and out of the shuttle-box it is required
to lift the device controlling the said stop motion, which requires an unnecessary
expenditure of power and wear and tear of material, while on the other hand the
construction is of such a kind that on every stopping of the loom thereby (and
there are generally several such stoppages during a day) a violent shock is given
to the loom by the striking of the stabbing-tongue against the buffer. These
frequent and heavy concussions of the whole loom are obviously of very hurtful
effect upon the latter and sooner or later the iron framework will become cracked.
Moreover with these disadvantages the arrangement is not entirely reliable in its
action and the wear and tear owing to the friction of the stabbing tongue on the
buffer increases this unreliability. Means have been tried to obviate these
disadvantages, for instance by using loose instead of rigid reeds, whereby the action
of the loom is facilitated but on the other hand other disadvantages then arise,
especially in weaving heavy fabric.
The improved device described hereinafter is not subject to the aforesaid friction
and early wear and tear, and stops the action of the loom at the required moment
instantly and without concussion of the latter.
The device is provided on one of the two sides of said loom and is shown in the
drawing in position ready for action in Figs. 1 and 2, whilst Figs. 3 and 4 illustrate
the position of the device after action, namely Fig. 3 in elevation from outside and
Fig. 4 in plan from above.
Figs. 5 to 9 are detailed views of parts in various positions as hereinafter
referred to.
The device comprises a brake draw rod or link with a groove or slot; of a draw-
hook for engaging said slot and actuating the brake; of a rod for thrusting off the
belt-disengaging lever; and of a carrier for moving the draw-hook. All these
parts are additions to the loom and in order to obtain a better view from the
drawing, the former are marked with small letters, whilst known portions of the
loom are indicated with capital letters.
Near the brake-wheel A, arranged upon the actuating shaft of the loom, is
placed the brake-shoe C. To this shoe the draw-rod or link a is connected on the
one side by means of the enlargement C', which link or rod at its front end is
grooved or slotted and slides in the bearing b. On the other side the thrust-rod e is
fixed on said brake-shoe by hanging it in the adjustable eye d, this thrust-rod being
at its front end connected to the above mentioned disengaging lever K. On the
batten D is fixed a bearing e for the draw hook f movably secured in and held by
means of a carrier with a fork-shaped notch, the carrier being made adjustable in
the direction of its height. The adjustable portion g' likewise ends in a fork and
5 is traversed by a small pin h. The book flying in the fork thus follows the
up-and-down movements of its carrier. This latter is secured below upon the
angularly bent arm E of the arbor E¹. This arbor traverses the loom and its ends
rest in bearings F at each side of the loom and thus forms the axial-point for the
short movements of its arm E and at the same time for the parts g g' and h

page_text: connected therewith. These movements are caused by the lever G fixed on arm E
which is pressed above onto the tongue I of the shuttle-box by means of the
spring H. The parts E, F, G, 9 g¹ are also shown in Fig. 5 as seen in section on
the line a a of Fig. 1. The disengaging lever K, which is connected with the
belt-fork L and which on its passing out of the slot M into the notch M¹ draws
with it said belt-fork and thus passes the belt from the acting pulley N onto the
loose pulley O, is on the operation of the present device pushed off by the rod c,
with which this disengaging lever is connected by the tongue i.
The movement of the hook fand consequently the actuation of the brake and
the disengaging of the belt takes place during the forward and backward swinging
of the batten D whenever the shuttle remains in the shed in the following manner.
The spring H misses deprived of its counter abutment due to the presence under
normal-conditions of the shuttle, displaces the lever by pushing the tongue I into
_the-batten. Owing to the absence from the box of the shuttle which should force
the tongue I outwards, the spring H allowed to act as aforesaid forces the lever G
upward and pushes the tongue into the batten. Thus the arbor E' is revolved and
its end E is lifted and together therewith the carrier g and the hook so that these
parts arrive in the position shown in Figs. 3 and 4. The raised hook f which at
other times passes forward and backward below the draw bar or link a at a
distance of about 2 centimetres now engages this bar by hooking itself into the slot
therein and thus firmly draws along by the action of the batten moving forward.
The brake shoe C is thereby pressed on to the brake wheel, and simultaneously the
rod c presses forward the lever K, out of the notch M so that said lever, (moved by
its own spring power) falls into the notch M' and thereby displaces the belt fork L.
This braking of the actuating shaft brings the loom without special requirement of
power to a standstill without noise and concussion.
Figs. 6, 7 and 8 also show respectively in plan the lever K with its tongue i and
the rod c in its resting position, at the moment of its passing out of the notch M,
and at the moment of its falling into the notch M¹.
For starting the loom again, the lever K is reversed in the usual way by hand
when the other parts retire automatically, into their normal position.
As in this device the shuttle passes in and out of the shuttle box, easily, the
looms can be run as fast as those with loose reeds.
Having now particularly described and ascertained the nature of this invention
and in what manner the same is to be performed, I declare that what I
claim is :-
rod
a,
In power looms the improved stop motion comprising the slotted brake draw
the draw hook f, carrier g and thrust rod c whereby the draw rod a and
hook fare adapted to engage each other and attract the brake shoe which, through
the rod c moves the disengaging lever K, substantially as and for the purpose
described.
Dated this 5th do... £ T 1004
R. HADDAN,
Of the Firm of Herbert Haddan & Co.,
18, Buckingham Street, Strand, London, W.C.,
Agent for the Applicant.