IMPROVEMENTS IN MACHINES POR SPINNING AND DOUBLING
Year: 1868

page_text: LETTERS PATENT to Benjamin Dobson, of the Firm of Messrs.
Dobson and Barlow, of Bolton, in the County of Lancaster,
Machine Makers, and William Slater, of the same Place, Manager,
and Robert Halliwell, of the same Place, Foreman, for the Inven-
PROVISIONAL SPECIFICATION left by the said Benjamin Dobson,
William Slater, and Robert Halliwell at the Office of the Com-
missioners of Patents, with their Petition, on the 30th January
1868.
We, BENJAMIN DOBSON, of the Firm of Messrs. Dobson and
Barlow, of Bolton, in the County of Lancaster, Machine Makers, and
WILLIAM SLATER, of the same Place, Manager, and ROBERT HALLI-
WELL, of the same Place, Foreman, do hereby declare the nature of
the said Invention for "IMPROVEMENTS IN MACHINES POR SPINNING AND
DOUBLING," to be as follows:-
Our Invention consists, first, in certain improvements in the machinery
described in the Provisional Specification of Letters Patent applied for on
the 30th day of September 1867, No. 2747, by the within-named Benjamin

page_text: Dobson and Robert Halliwell. In the said Provisional Specification an
arrangement of machinery was described for driving the spindles of mules.
Now our present Invention consists in an improved mode of driving the
said spindles. The strap pulley for driving the single speed is secured
to one end of a shaft, and receives its motion direct from the mulc
gearing; to the other end of this shaft is fixed the rim pulley over
which the band passes to the tin roller, and from thence to the double
speed rim pulley, which is fixed to a shaft in a line with the single
speed shaft, as described in the Provisional Specification above referred
to. Upon the double speed shaft is a strap pulley, to which is fixed
a spur wheel gearing into another spur wheel fixed to a second shaft,
and to this second shaft is fixed a third spur wheel gearing into a spur
wheel fixed to the double speed shaft; by this arrangement the single
speed can be altered independently of the double speed, or the double
speed can be altered independently of the single speed, and the speed
of the mule gearing and the diameter of the driving drums do not
require to be increased. This part of our Invention may be modified
by placing the driving pulleys on a second shaft; the single speed strap
is driven by a wheel on the boss of the strap pulley gearing into a
wheel on the single speed shaft, and the double speed shaft is driven
by a wheel on the second shaft gearing into a wheel on the double
speed shaft. The band pulleys are fixed to the ends of the double.
and single speed shafts, as described in the Provisional Specification
above referred to.
Another part of our Invention consists in supporting the long lever
on an adjustable fulcrum stud fitting in slots in the long lever and
in the bracket which supports it.
.
The last part of our Invention consists in regulating the application
of the break for checking the inward run of the carriage by means
of the rod of the drawing-up strap fork, and to which the break is
connected; this rod is capable of moving endwise, as usual, and it is
moved partially round by hand when required to regulate the pressuro
of the break without interfering with the position of the strap fork.
The end motion of the rod is also capable of being regulated by a
thumbscrew.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent,
filed by the said Benjamin Dobson, William Slater, and Robert
Halliwell in the Great Seal Patent Office on the 22nd July 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 WILLIAM SLATER, of
the same Place, Manager, 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 January, in the year
of our Lord One thousand eight hundred and sixty-eight, in the thirty-
first year of Her reign, did, for Herself, Her heirs and successors, give
and grant unto us, the said Benjamin Dobson, William Slater, and
Robert Halliwell, Her special license that we, the said Benjamin
Dobson, William Slater, and Robert Halliwell, our executors, adminis-
trators, and assigns, or such others as we, the said Benjamin Dobson,
William Slater, 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 MACHINERY FOR
SPINNING AND DOUBLING," upon the condition (amongst others) that we,
the said Benjamin Dobson, William Slater, and Robert Halliwell, our
executors or administrators, by an instrument in writing, under our,
or their, or one of our or their hands and scals, should particularly
describe and ascertain the nature of the said 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, William
Slater, 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) :-
Our Invention consists, first, in certain improvements in the machinery
described in the Specification of Letters Patent granted on the Thirtieth

page_text: day of September, One thousand eight hundred and sixty-seven, No. 2747,
to the within-named Benjamin Dobson and Robert Halliwell. In the
said Specification an arrangement of machinery was described for driving
the spindles of mules. Now our present Invention consists in an
improved mode of driving the said spindles.
Another part of our Invention consists in supporting the long lever
on an adjustible fulcrum stud fitting in slots in the long lever and in
the bracket which supports it.
The last part of our Invention consists in regulating the application
of the break for checking the inward run of the carriage by means
of the rod of the drawing-up strap fork, and to which the break is
connected.
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.
Fig. 1 is an elevation, and Fig. 2 an end view of part of the headstock
of a mule constructed according to our improvements. a and b aro
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 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 b' instead of being keyed on the shaft b, as in the
Patent of Dobson and Halliwell above referred to, is loose on the shaft.
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 bis 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 band for
driving the spindles passes from one rim band pulley to the other over
suitable guide pulleys and around the pulley on the axle of the tin
roller in the carriage, as in mules made according to the Patent of
Dobson and Halliwell above referred to. To the boss of the pulley '
is keyed the spur wheel 63, which gears into the wheel e keyed on
the second shaft e, to which is also keyed the wheel e gearing into
the wheel 6 keyed on the shaft b. By this arrangement the single
speed can be altered independently of the double speed, or the double
speed can be altered independently of the single speed, and the speed

page_text: of the mill gearing and the diameters of the driving drums do not
require to be increased to an inconvenient extent.
Fig. 3 is a side elevation, and Fig. 4 an end view of the headstock
of a mule representing a modification of the above; and Fig. 5 is a plan
of the same. In this arrangement the pulleys a', a³, and 6' are mounted
on the second shaft e, and the single speed shaft a is driven by the spur
wheel keyed to the shaft e gearing into the pinion e keyed on
the shaft a, and the double speed shaft b is driven by the spur wheel b³
keyed on the boss of the pulley 6¹, and gearing into the pinion et
keyed on the shaft b. The rim band pulleys c and d are fixed to
the ends of the shafts 6 and a, as in Fig. 1. The relative proportion
in the number of the teeth in the wheels and pinions b³, b³, e², and e³
will determine the proportion of speed of the single and double speed
shafts.
Our improved mode of supporting the long lever is also shewn in
Figs. 3 and 4. f is the long lever, which is provided with a slot in
which fits the adjustible fulcrum stud f¹; this stud is secured in
the slot in the bracket g. By varying the position of the stud f'
in the slots of the long lever and bracket the relative proportion
in the lengths of the two arms of the long lever can be adjusted
to the greatest accuracy.
The last part of our Invention relating to the application of the
break is also shewn in Figs. 3 and 4. h is the rod of the drawing-
up strap fork i; this rod is held endwise by the latch k, and it is
pressed against the latch by the weighted lever ; near the end of
the stop rod h is fixed the finger h¹; the end of this finger fits
on the end of the thumbscrew which passes through a nut in
the slotted bracket h³. m is the fast pulley for the drawing-up strap
and for the break strap n, one end of which is fixed to the weighted
lever n', and the other end is fixed to the framing of the headstock.
The break strap n is released when the carriage is nearly up by
the stud o¹ in the worm wheel o acting on the catch p, which holds
up the weighted end of the lever n', consequently when the catch p
is released the break n is applied. m² is the loose pulley for the
drawing-up strap. When it is desirable that more strap should come
on to the fast pulley m the lock nut h* of the screw his slackened;
the button head of the screw is then turned round so as to cause
it to approach the slotted bracket h³, consequently when the catch

page_text: is released and the strap rod is moved endwise by the lever 1,
the finger being only stopped when it comes in contact with the
button head of the screw h³, allows the drawing-up strap to come
so much more on to the pulley m as may be required. When it
is required to reduce the pressure of the break strap n the attendant
slackens the lock nut and lowers the position of the screw h²
in the slot of the bracket ³, thereby partly turning the rod h and
winding up a portion of the chain on the boss of the rod; this
action shortens the chain h³ and prevents the break n acting with
its full force on the pulley m. The contrary action takes place when
the screw is raised in the slot of the bracket 3, the chain 15
being then lengthened allows the full force of the break strap n
to be applied to the pulley m.
Having thus stated the nature of our Invention, and described the
manner of performing the same, we declare that we claim,-
First. The improved combination and arrangement of gearing for
driving the separate shafts of the rim band pulleys, as described and
shewn in reference to Figs. 1, 2, 3, 4, and 5.
Secondly. The improved mode of supporting the long lever, as
described and shown in Figs. 3 and 4.
And, lastly. The improved mode of regulating the position of the
drawing-up strap on the drawing-up pulley, and the application of
the break for checking the inward run of the carriage, as described
and shewn in Figs. 3 and 4.
In witness whereof, we, the said Benjamin Dobson, William Slater,
and Robert Halliwell, have hereto set our hands and scals, this
Twentieth day of July, One thousand eight hundred and sixty-