An Improved Stop Motion for Carding Engines.
Year: 1889

page_text: Date of Application, 23rd July, 1889
Complete Specification Left, 23rd Apr., 1890-Accepted, 23rd July, 1890
An Improved Stop Motion for Carding Engines.
I JOHN VAUGHAN of Hurst Mills and THE HURST MILLS COMPANY LIMITED,
Cotton Spinners both of Ashton-under-Lyne in the County of Lancaster Mill
Manager do hereby declare the nature of this invention to be as follows:-
The object of this invention is to construct a simple and efficient stop motion
to be applied to carding engines employed for carding fibrous substances to cause
the stoppage of the engine whenever the sliver breaks, or from any other cause
is not being properly delivered.
We propose to apply our improved stop motion to the calendering rollers which
deliver the sliver. These rollers are driven direct by gearing and the journals
of the upper roller are so mounted in their bearings that they can rise and fall
to a limited extent so as to exercise a certain amount of pressure on the sliver.
Whenever the sliver is absent the top roller falls into contact with the bottom
roller, and when the sliver is being delivered between them the upper roller is
raised from contact with the lower one by the thickness of the sliver (say about
one sixteenth of an inch, more or less.)
For the purposes of our invention we prolong the axle of the upper roller at
one end and upon this prolongation we mount a worm.
Beneath this we mount a worm wheel carried upon a suitable stud, it being so
arranged that when the sliver is present it raises the worm out of gear with the
worm wheel, but when the sliver is absent the falling of the top roller brings
the worm into gear and causes the worm to turn the worm wheel.
Upon the face of the worm wheel is a pin which is connected by a link to one
end of a lever, the other end of which lever is in connection with the ordinary
doffer lever so that when the top calender roller falls and the worm wheel com-
mences to revolve the doffer lever will be released and the driving gear thus
thrown out of action.
"
Dated this 22nd of July 1899
:
GEORGE DAVIES.
4. St. Ann's Square, Manchester, Agent for the Applicant.
COMPLETE SPECIFICATION.
An Improved Stop Motion for Carding Engines.
We JOHN VAUGHAN Mill Manager of Hurst Mills and THE HURST MILLS COM-
PANY LIMITED, Cotton Spinners both of Ashton-under-Lyne in the County of
Lancaster 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 the invention is to construct a simple and efficient stop motion
to be applied to carding engines employed for carding fibrous substances to cause
the stoppage of the engine whenever the sliver breaks or from any other cause
is not being properly delivered that is to say in proper thickness.
The nature of the invention and the manner in which the same is to be per-
formed or carried into practical effect will be readily understood on reference to
the annexed sheet of drawings and the following explanation thereof.
Fig. 1. on the annexed drawing is a front elevation, and Fig. 2, a side or end
|view of a pair of calendering rollers and part of the delivery end of a carding
Price S/1

page_text: engine showing the application of the invention thereto, a being part of the
framing and b, & the calendering rollers.
These rollers are driven direct by spur gearing e in the usual manner and one
of the journals of the upper roller is so mounted in its bearings d that it can
rise and fall to a limited extent so as to exercise a certain amount of pressure
on the sliver as usual.
Whenever the sliver is absent or becomes too thin the top roller b falls into
contact (or nearly so) with the bottom roller 6 and when the sliver is being
delivered between them in the proper thickness the upper roller is raised from
contact with the lower one by the thickness of the sliver e (say about one
sixteenth of an inch more or less) as shewn at Fig. 1.
For the purposes of this invention we prolong the axle of the upper roller b
at one end, and upon this prolongation we mount a worm f. Beneath this we
mount a worm wheel g carried on a suitable stud, it being so arranged that
when the sliver present it raises the worm ƒ out of gear with the worm
wheel g (see Fig. 1.) but when the sliver is absent or becomes too thin the falling
of the top roller brings the worm f into gear and causes the worm f to turn
the worm wheel g.
Upon the face of the worm wheel g is a pin h which is connected by a link i
to one end of a lever the other end of which is provided with an arin 7 which
comes beneath the long arm of a catch lever m carried by the ordinary "doffer
lever".
The catch m supports the doffing lever" in the position shown at Fig. 2.
so long as the sliver is being delivered in proper thickness but as soon as the
top roller & falls and allows the worm to come into gear with the worm wheel g
and cause the latter to revolve, the pin h depresses the link i, and releases the
caich, and allows the "doffing-lever" to fall and stop the machine, hy
throwing the driving gear out of action in the usual way.
The link is connected with the pin by a hook or slotted hole so that it
can be thrown out of gear when not required to be worked.
If it be desired to stop the engine also when the sliver becomes too thick this
may be effected by having a second worm wheel above the worm f as indicated
by the dotted circle at Fig. 1. and connecting the same to the lever in a
similar manner, but in this case the pin will have to be on the other side of
the centre.
We prefer however for this purpose to mount at the back of the rollers b¹ a
cranked lever the short arm of which catches against the lower side of a bent
lever which rests upon the axle of the top roller so as to hold the long arm
As soon however
of the lever o suspended above the sliver as shown at Fig. 1.
as the increasing thickness of the sliver raises the roller b it releases the catch
and allows the long arm of the lever o to fall and break the sliver the absence
of which from between the rollers and immediately causes the stoppage of
the engine.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
The arrangement of mechanism applied to the callenders, or rollers of a card-
ing engine, substantially as hereinbefore described and illustrated by the draw-
ings annexed for the purpose of stopping the revolution of the doffing cylinder
by the falling of the top callender or roller by the absence or tenuity of the sliver
or by the rising of the same owing to any undue increase in thickness of the
sliver.