CERTAIN IMPROVEMENTS IN SELF-ACTING MULES FOR SPINNING AND DOUBLING
Year: 1876

page_text: LETTERS PATENT to John Chisholm, Manager, and John Clegg, Foreman, both
of Asa Lees and Company, Limited, of Oldham, in the County of Lancaster,
for the Invention of "CERTAIN IMPROVEMENTS IN SELF-ACTING MULES FOR
SPINNING AND DOUBLING."
Sealed the 7th July 1876, and dated the 2nd May 1876.
PROVISIONAL SPECIFICATION left by the said John Chisholm and John
Clegg at the Office of the Commissioners of Patents on the 2nd May 1876.
JOHN CHISHOLM, Manager, and JOHN CLEGG, Foreman, both of Asa Lees and
Company, Limited, of Oldham, in the County of Lancaster. "CERTAIN IMPROVE-
MENTS IN SELF-ACTING MULES FOR SPINNING AND DOUBLING."
The object of our Invention is to stop the mule by self-acting mechanism when
the cops are full, or at any other stage before doffing.
The mechanism consists of an adjustable finger fixed to the rod connecting the
copping plates, which rod is moved laterally by the copping screw; this finger
releases a catch, by which one end of a horizontal lever is held in position, and the
other end of this lever when released drops into a recess in the rod connecting the
holding out catch and the taking-in motion. By this arrangement as soon as the
backing off is completed the lateral motion of the rod is arrested by the end of
the lever being caught in the recess, and consequently the taking-in motion is held
out of gear until the doffing is complete, or until the lever is released by a trendle,
Before starting again the adjustable finger must be brought back by turning the
copping screw to bring the parts into position for another sct.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said John Chisholm and John Clegg in the Great Seal Patent Office on
the 28th October 1876.
JOHN CHISHOLM, Manager, and JOHN CLEGG, Foreman, both of Asa Lees and
Company, Limited, of Oldham, in the County of Lancaster. " CERTAIN IMPROVE-
MENTS IN SELF-ACTING MULES FOR SPINNING AND DOUBLING."
The object of our Invention is to stop the mule by self-acting mechanism when
the cops are full, or at any other stage before doffing.
The mechanism consists of an adjustable finger fixed to the rod connecting the
copping plates, which rod is moved laterally by the copping screw; this finger
releases a catch by which one end of a horizontal lever is held in position, and the
other end of this lever when released drops into a recess in the rod connecting the
holding out catch and the taking-in motion. By this arrangement as soon as the
backing off is completed the lateral motion of the rod is arrested by the end of the
lever being caught in the recess, and consequently the taking-in motion is held out
of gear until the doffing is complete. Before starting again the adjustable finger
must be brought back by turning the copping screw to bring the parts into position
for another set.
And in order that our Invention may be fully understood we will proceed to
describe the accompanying Sheet of Drawings, reference being had to the figures
and letters marked thereon.
Fig. 1 is an elevation of the headstock of a self-acting inule to which our im-
provements are applied; Fig. 2 is a plan; and Fig. 3 a front view of the same.
a is the framing of the headstock; b, b, are the copping plates which are connected
together by the rod c, and which are moved laterally by the copping screw d; c is
the holding-out catch, which is connected to the levers of the taking-in friction
box by the rod g. These parts and all the others requisite to complete the mule
are made in the usual manner.
Our improvements consist of the following parts-The plate his fixed on the
floor near the front of the headstock. On this plate is a projection for the fulcrum
stud of the horizontal lever i, and in another projection is the stad for the pendant
catch j, by which one end of the lever i is held down, as shewn in Fig. 1; the other
end of the lever i passes through an open slot in another projection of the plate h,
and this end of the lever i drops when required into a recess in the rod g. To the
plate is also cast a projection for the stud of the trendle lever k, one end of which
passes under the end of the horizontal lever i, as shewn best in Fig. 2. To the
rod c is fixed the adjustable finger 1, which is placed in such a position on the rod c
that when the cops are full it shall have acted on the pendant catch j to release
the horizontal lever i.
The mode of operation is as follows:-So long as the yarn is being wound on
the cops the catch; holds one end of the lever i down and the other end up, as
shewn in Fig. 3, and consequently the rod g connecting the holding-out catch e,
with the taking-in motion can move to and fro under the end of the lever i, but as
soon as the cops are full, and the finger has acted on the catch j to release one
end of the lever i, the other end being the heavier drops into the recess g', which is
then under the end of the lever i at the termination of the backing off'; the con-
necting rod g is locked fast, and consequently the taking-in motion is not brought
into operation. After the doffing is completed the screw & must be turned back to
bring the copping plates 6 into their original positions and to allow the pendant
catch to lock the lever i as soon as the attendant has put his foot on the
treadle k.
Having thus stated the nature of our Invention, and described a convenient
manner of performing the same, we wish it to be understood that we do not intend
to limit ourselves to the details given, as they will require to be modified according
to the peculiar construction of the mule to which they are applied, and we declare

page_text: that we claim the lever i, which is released by the action of the copping screw and
the parts acting in combination therewith, for stopping the mule when the cops are
full or when the requisite number of stretches has been accomplished.
In witness whereof, we, the said John Chisholm and John Clegg, have hereto
set our hands and seals, this Nineteenth day of October One thousand eight
hundred and seventy-six.
JOHN CHISHOLM. (LS.)
JOHN CLEGG.
(LS)