IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING
Year: 1867

page_text: LETTERS PATENT to Benjamin Dobson, of the Firm of Messieurs Dobson
and Barlow, of Bolton, in the County of Lancaster, Machine Makers, and
Robert Halliwell, of the same Place, Foreman, for the Invention of
Terna
T MILES DOD QUEENING AND DOUBLING"
Sealed the 3rd January 1868, and dated the 30th September 1867.
PROVISIONAL SPECIFICATION left by the said Benjamin Dobson and
Robert Halliwell at the Office of the Commissioners of Patents, with
their Petition, on the 30th September 1867.
We, BENJAMIN DOBSON, of the Firm of Messieurs Dobson and Barlow, of
Bolton, in the County of Lancaster, Machine Makers, and ROBERT HALLIWELL,
of the same Place, Foreman, do hereby declare the nature of the said
Invention for "IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING," to be as
follows:-
This Invention relates to mules for spinning and doubling cotton, wool, flax,
or other fibrous substances (when two speeds are required), and consists in
making the horizontal rim pulley shaft in two parts extending nearly the whole
length of the headstock. The rim band pulley for the slow speed is in the
end of one shaft, and that for the quick speed on the other shaft. The
driving pulleys are placed at the junction of the above shafts, one pulley fixed
to each shaft, and a loose pulley either placed between the above pulleys or on

page_text: one side of them. An endless band passes from one rim band pulley to the
other, over suitable guide pulleys, to the pulley or pulleys inside of the mule
carriage, for the purpose of driving the spindles at the speeds required, and
the band is tightened by making the guide pulley inside the carriage adjust
able, the said guide pulley being supported in a frame actuated by a screw or
other equivalent. By the above arrangement the speeds can be easily varied
to suit the counts required by changing the rim band pulleys. The other
portions of the the mule are arranged to suit the above object, that is to say, the
twist or cam shaft is placed at right angles to the headstock, and the balanced
lever is actuated by a crank on the twist or cam shaft. The drawing rollers
are driven by gearing from the horizontal rim pulley shaft at the back of the
headstock. The carriage is drawn out by the differential motion which is
driven from the shaft by which the drawing rollers are driven.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Benjamin Dobson and Robert Halliwell in the Great Seal
Patent Office on the 27th March 1868. .
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, BENJAMIN
DOBSON, of the Firm of Messieurs Dobson and Barlow, of Bolton, in the
County of Lancaster, Machine Makers, and ROBERT HALLIWELL, of the same
Place, Foreman, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirtieth day of September, in the year of our Lord
One thousand eight hundred and sixty-seven, in the thirty-first year of Her
reign, did, for Herself, Her heirs and successors, give and grant unto us, the
said Benjamin Dobson and Robert Halliwell, Her special license that we,
the said Benjamin Dobson and Robert Halliwell, our executors, administra-
tors, and assigns, or such others as we, the said Benjamin Dobson and Robert
Halliwell, our executors, administrators, and assigns, should at any time agree
with, and no others, from time to time and at all times thereafter during
the term therein expressed, should and lawfully might make, use, exercise,
and vend, within the United Kingdom of Great Britain and Ireland, the
Channel Islands, and Isle of Man, an Invention for "IMPROVEMENTS IN MULES
FOR SPINNING AND DOUBLING," upon the condition (amongst others) that we,
the said Benjamin Dobson and Robert Halliwell, our executors or adminis-
trators, by an instrument in writing under our, or their, or one of our or their
hands and seals, should particularly describe and ascertain the nature of the said

page_text: Invention, and in what manner the same was to be performed, and cause
the same to be filed in the Great Seal Patent Office within six calendar months
next and immediately after the date of the said Letters Patent.
NOW KNOW YE, that we, the said Benjamin Dobson and Robert Halliwell,
do hereby declare the nature of our said Invention, and in what manner
the same is to be performed, to be particularly described and ascertained
in and by the following statement (that is to say) :-
==
This Invention relates to mules for spinning and doubling cotton, wool, or
other fibrous substances (when two speeds are required), and consists in
making the horizontal rim pulley shaft in two parts extending nearly the
whole length of the headstock. The rim band pulley for the slow speed is on
the end of one shaft, and that for the quick speed on the other shaft. The
driving pulleys are placed at the junction of the above shafts, one pulley fixed
to each shaft, and a loose pulley placed between the above pulleys. An
endless band passes from one rim band pulley to the other over suitable guide
pulleys to the pulley or pulleys inside of the mule carriage for the purpose of
driving the spindles at the speeds required, and the band is tightened by
making the guide pulley inside the carriage adjustable, the said guide pulley
being supported in a frame actuated by a screw or other equivalent. By the
above arrangement the speeds can be easily varied to suit the counts required
by changing the rim band pulleys. The other portions of the mule are
arranged to suit the above object, that is to say, the twist or cam shaft is
placed at right angles to the headstock, and the balance lever is actuated by a
crank or tappet on the twist or cam shaft. The drawing rollers are driven by
gearing from the horizontal rim pulley shaft at the back of the headstock.
The carriage is drawn out by the differential motion which is driven from the
shaft by which the drawing rollers are driven.
And in order that our Invention may be fully understood and readily
carried into operation, we will proceed to describe the accompanying Sheet of
Drawings, reference being had to the figures and letters marked thereon.
Figure is an elevation, and Figure 2 a plan of the principal parts of a
hand mule constructed according to our improvements. a and b are the two
parts of the horizontal or rim pulley shaft extending nearly the whole length
of the headstock, the shafts a and b are supported in suitable bearings shewn
5 in the Drawing, and their ends touch or nearly touch each other in a line with
the rims of the loose pulley a', and the quick speed pulley b'. The pulley a¹
is loose on the shaft a and the pulley & is keyed on the shaft b, to the shaft a
is keyed the slow speed pulley a². To the other extremity of the shaft a is
fixed the slow speed rim band pulley d, and to the other end of the shaft 6 is
J

page_text: fixed the quick speed rim band pulley c, both the rim pulleys c and d are
capable of being taken off and others of a different diameter put on in their
stead, the endless bande passes from one rim band pulley to the other over
suitable guide pulleys and around the pulley f on the axle of the tin roller
in the carriage g as in mules of the ordinary construction. This endless band
is tightened by means of the pulley h which is mounted in an adjustable
bracket i fitting on the frame J in the carriage, and the position of the
bracket i is regulated by a screw and hand wheel k, the screw passing through
a nut fixed to the bracket i or other equivalent. The other portions of the
mule are constructed in the usual manner, but they are arranged to suit the
peculiar disposition of the rim band pulley shafts, that is to say, the twist or
cam shaft is placed at right angles to the headstock, the balance lever m is
actuated by the tappet fixed on the shaft l, this tappet acts on a projection
from the balance lever m and lifts it up so as to relieve the rod to which the
strap fork is fixed of the weight of the lever m, consequently when the rod is
unlatched in the ordinary manner the strap which is now supposed to be on
the pulley a is moved from the pulley a to the pulley b'. As the twist
shaft continues to rotate the tappet leaves the projection on the lever m
which is thus set at liberty to act on the strap fork rod, and when the second
tappet on the shaft 2 unlatches the said rod, the weighted lever m moves the
rod back and brings the strap from the pulley b¹ to the loose pulley a¹ when
the carriage has run into the roller beam, the strap rod is again unlatched in
the usual manner and the balance lever m changes the strap from the loose
pulley a to the fast pulley a. The drawing rollers n are driven from the
shaft a by the pinion a³ gearing into a carrier wheel which drives the wheel n
fixed on the shaft n', at the other end of which is a bevel wheel gearing into
another wheel on the usual coupling shaft of the front drawing roller n. The
carriage is drawn out by the pinion n³ on the coupling shaft of the front
drawing roller n gearing into the carrier wheel o to which is fixed the change
wheel o¹ gearing into another carrier o³, driving the wheel o³ fixed to the
wheel p forming part of the differential motion. When the clutch box n' is
disconnected the train of wheels above described is at rest and the carriage is
taken out at a slow speed by means of the worm n³ on the shaft n¹ gearing
into a worm wheel, on the boss of which is attached a change wheel gearing
into the wheel 9 fixed to the bevel wheel p forming the other side of the
differential motion, the carrier bevel wheel p³ then turns on its stud fixed to
the socket p³ fast on the usual drawing-out shaft r. The pulleys 8, s¹, and s²,
on the shaft a are used for the purpose, of assisting in backing off and winding
on in the usual manner..

page_text: Having thus stated the nature of our Invention, and described the
manner of performing the same, we declare that we claim,-
First. The application of two shafts in line with each other, to the outer
end of each of which the rim band change pulleys are attached as shewn and
described.
Secondly. Placing the quick speed rim band pulley at the front of the
beadstock, and the slow speed rim band pulley at the back, at shewn and
described.
Thirdly. The mode of tightening the rim band, as shewn and described.
Fourthly. The peculiar arrangement of the twist shaft and balance lever, as
shown and described.
And, lastly, the general combinations and arrangement of the parts of mules
for spinning and doubling to adapt them to the improved mode of driving the
rim band as shown and described.
In witness whereof, we, the said Benjamin Dobson and Robert
Halliwell, have hereto set our hands and seals, this Twenty-fifth day
of March, One thousand eight hundred and sixty-eight.,
ROBERT HALLIWELL. (L.S.)