An Improved Stop-motion for Ribbon Looms.
Year: 1891

page_text: Date of Application, 17th Oct., 1891-Accepted, 21st Nov.: 1891
COMPLETE SPECIFICATION.
An Improved Stop-motion for Ribbon Looms.
I FRIEDRICH JULIUS SCHÄFER, of the Town of Oberlichtenau, near Pulsnitz
in the Empire of Germany, Manufacturer, do hereby declare the nature of my
said 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 my invention is to manufacture an improved automatic stop
motion for ribbon looms; which stop motion immediately causes the loom to cease
working in the event of the thread being broken or ending.
And in order that my said invention may be particularly described and ascer-
tained, reference is hereby made to the accompanying drawings, in which similar
letters of reference indicate corresponding parts.
Fig. 1 is a sectional elevation of a ribbon loom, fitted with my invention, the stop
motion being out of action.
Fig. 2 is a sectional elevation, showing the stop-motion in action.
Fig. 3 is an elevation showing the batten in another position, the stop-motion
being out of action.
Fig. 4 is a front view of the batten on the line 1-2 of Fig. 3.
Fig. 5 is a plan view of the lower part of the mechanism, and
Fig. 6 is a front view of the same.
xx.
I is the box attached to the batten j, a is a shaft or spindle to which the arm m
and pulley
r are fitted. s is a plate attached to a rod sliding in guides
A cord n connects the plate & with the arm m. The spindle a is fitted with a
coiled spring f the force of which is exerted so as to permit the rod s¹ and
plates to descend until it rests upon the thread u issuing from the shuttle z.
b is the breast beam. k is the woven material which is wound upon the
roller y as it is made. p is a bolt fitted to slide in a tube in the beam b. e is a
hole provided to admit the end of the bolt p, when the plate s is held up out of its
way. is a spiral spring, one end of which is attached to the breast beam b, the
other end actuating the pulley . by means of a cord n' passing round the
pulley to the pulley r., to which it is fixed so as to cause it to revolve and
raise the arm m when in a state of tension, as shown in Fig. 3. d is a bent lever
attached to the spindle a'. This lever is in contact with the head of the bolt p.
is a lever fixed to the spindle a'. t is a connecting rod, pivoted at one end to the
ever hand at the other end to a lever fixed to a spindle a³. The spindle a³
carries a double ended lever d', ³, the end being drawn upwards by a spring f'.
is a bell crank lever pivoted at v, so as to be capable of receiving horizontal
ircular motion. The end c is hinged at so as to be capable of falling to a limited
extent. i is a latch pivoted to a strut i¹ and governed by a spring . is a
orizontal rod sliding in bearings w. t2t are pins fitted to the rod t' between which
ins the end of the lever h* passes. g is a portion of the frame supporting the breast
eam b.
The action of the stop-motion is as follows:-When the batten jis in the position
hown in Fig. 3 the plates is raised clear of the shuttle by the action of the
pring revolving the pulley r and spindle a, thereby raising the arm m. When
he batten j returns to the position shewn in Figs. 1 and 2, the spring f returns the
rm m to a horizontal position, as shewn, and the plates falls lightly upon the
hread u, if in position and unbroken as shown in Figs. 1 and 4. But if the thread u
appens to be exhausted or broken the plate s then passes down through the
auttle z to the position shown in Fig. 2. The motion of the bolt p is arrested by
ontact with the plates. The head of the bolt p presses outwards the lever d.
y means of the connections already described the lever d' then raises the hinged
Price 6d1

page_text: end c of the bell crank lever ³ to such a position that it is caught by the latch i
and carried a certain distance until its curvilineal path releases it from the
latch i, whereupon the end c again falls. This motion of the bell crank lever /2
moves the rod t in a corresponding manner, the end c¹ being confined between
studs t as shown by dotted lines in Fig. 5; the normal position being shown by
continuous lines: The rod t extends to the fork of the driving belt or other
gear for stopping and starting the motion of the looms..
It will be obvious that in single looms, the connecting gear for operating the
bar t¹ is not required.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed; I declare that what I
claim is:
1. In combination with grouped and single ribbon looms, the application and use
of the several means and appliances for stopping the motion of the loom on the
breaking or exhaustion of a thread, substantially as hereinbefore described and
illustrated by the drawings.
2. The improved stop-motion for grouped and single ribbon looms, substantially
as hereinbefore described and illustrated by the drawings.
Dated 17th October 1801
GEO. DOWNING,
8, Quality Court, London, W.C.; Agent for Applicant.
GEO.
DOWNING,
8, Quality Court, London, W.C.; Agent for Applicant.