IMPROVEMENTS MOTO BAD ENTWO AND DARDLING
Year: 1863

page_text: LETTERS PATENT to Eli Spencer, of Oldham, in the County of Lancaster,
Machinist, and John Dodd, of the same Place, Machinist, for the Inven-
tion of "IMPROVEMENTS MOTO BAD ENTWO AND DARDLING"
Sealed the 6th May 1864, and dated the 13th November 1863.
PROVISIONAL SPECIFICATION left by the said Eli Spencer and John
Dodd at the Office of the Commissioners of Patents, with their Petition,
on the 18th November 1863.
We, ELI SPENCER, of Oldham, in the County of Lancaster, Machinist, and
JOHN DODD, of the same Place, Machinist, do hereby declare the nature of the
said Invention for "IMPROVEMENTS IN MULES FOR SPINNING AND DOUBLING," to be
as follows:-
Our Invention relates to a method of giving the required intermittent
motion to the cam shaft. For this purpose we employ toothed wheels, which
are thrown in and out of gear accordingly as the shaft is required to revolve
or remain at rest. This throwing in and out of gear we effect by the employ-
ment of a rotating surface, which may be adapted to the driving wheel or to
the cam shaft, and upon which there are inclines acting against a pin, which
forces the wheels out of gear. Or in place of this arrangement the pin may
rotate and the inclines remain stationary. When the cam shaft is to revolve,
the pin or the incline is withdrawn, and the driving wheels are placed in gear

page_text: by a spring or weight. As the reverse of this, however, the wheels may have
a tendency to be forced out of gear by the said spring or weight, and be
governed by the relative positions of the pin and inclines.
SPECIFICATION in pursuance of the conditions of the Letters Patent, filed
by the said Eli Spencer and John Dodd in the Great Seal Patent Office
on the 18th May 1864.
.
TO ALL TO WHOM THESE PRESENTS SHALL COME, we, ELI
SPENCER, of Oldham, in the County of Lancaster, Machinist, and JOHN DODD,
of the same Place, Machinist, send greeting.
WHEREAS Her most Excellent Majesty Queen Victoria, by Her Letters
Patent, bearing date the Thirteenth day of November, in the year of our Lord
One thousand eight hundred and sixty-three, and in the twenty-seventh year of
Her reign, did, for Herself, Her heirs and successors, give and grant unto
us, the said Eli Spencer and John Dodd, Her special license that we, the
said Eli Spencer and John Dodd, onr executors, administrators, and assigns,
or such others as we, the said Eli Spencer and John Dodd, 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 in "IMPROVEMENTS IN MULES FOR SPINNING AND
DOUBLING," upon the condition, amongst others, that we, the said Eli Spencer
and John Dodd, by an instrument in writing under our hands and seals, or
under the hand and seal of one of us, should particularly describe and ascer-
tain 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 I, the said Eli Spencer, do hereby declare the
nature of our said Invention, and in what manner the same is to be per-
formed, to be particularly described and ascertained in and by the following
statement and accompanying Drawings, that is to say :-
In the accompanying Drawings Fig. 1 represents one method of carrying
our Invention into practice in sectional elevation; and Fig. 2 is a plan view
thereof. At a is the rim shaft, upon which is the ordinary friction cone b;
this shaft carries a spur wheel c, taking into a pinion d, which pinion is there-

page_text: fore constantly revolving, and it becomes, as hereafter will be seen, the
occasional driver of the cam shaft; the pinion d is mounted upon a stud e, on
which stud also there is a bell-crank lever f, fx, adapted so as to turn loosely
thereon; the arm f* of this lever carries a pinion g, which is in gear with the
pinion d, and like it, therefore, it has a constant rotatory motion. The end of
the part of the bell-crank lever is turned upward, forming a pin or tooth h,
which bears (according to the position shewn in the Drawing) against a
projecting part i, extending from a disc k; and in this disposition of the said
parts the disc k is therefore prevented from moving in the direction of the
arrow, the tooth h constituting a stop or registering position. The arm ƒ of
the bell-crank lever is constantly drawn by a spring 1, and if the tooth h or
disc k were therefore moved horizontally, then the said lever f, fx, would be
caused to turn upon the stud e, and bring the pinion g into geer with a
wheel m, mounted upon the cam shaft n. The projecting part i is the summit
of an inclined plane o extending from the aforesaid discs k, and in like manner
there are two other projecting parts 2, 3, and inclines o', o³, situate in different
planes, as seen in the plan view, Fig. 2, and capable therefore of being brought
to bear successively against the end of the lever f*. The disc k is mounted
loosely upon the cam shaft n, so as to be capable of sliding thereon, but it is
caused to revolve with the wheel m (when rotatory motion is imparted thereto)
by means of pins p passing through it and fixed in the said wheel. Upon the
disc k is a boss, furnished with a groove, within which is a fork q, formed upon
a lever r, capable of turning upon a centre at s, and by the turning of this
lever, therefore, the inclines o, o¹, o, with their projecting parts i, i, 3, may
one after another be brought into and removed from the plane of the leverf*.
The operation is as follows:-According to the positions of the parts shewn in
the Drawings, a change has been effected; the pinion g is out of gear with
the wheel m, and consequently rotatory motion is withdrawn from the cam
shaft n. The tooth h of the lever f* is situate against the projecting part i,
and has therefore acted as a stop to determine the position of the cam shaft.
When the time for another change shall have arrived, then the mule carriage
or part connected therewith, or any suitable moving part of the machine, will
operate upon the lever r, so as to cause it to turn upon its centre 8. This
turning of the said lever will, through its fork q, slide the disc k upon the
shaft n, thereby moving the projecting part i longitudinally away from the
tooth h. The obstruction being now removed, the bell-crank lever f, f*, will
be at liberty to turn by the elastic force of the spring upon its stud e, which
it will then do, and bring the pinion g into geer with the wheel m, and as the
said pinion is constantly revolving, rotatory motion will be communication to

page_text: the cam shaft n, and thus the desired change will be effected. The lateral
movement above described of the disc k, while it has removed the projecting
part i from the same plane as the lever f*, will have brought the incline o' and
part into the same plane therewith, and the continued rotation of the cam
shaft, and consequently disc k, will cause the said incline o' to act against the
tooth h, so as to force it backward, turn the lever f, f, upon its centre, and
remove the pinion g from gear with the wheel m, and thus the cam shaft will
be disconnected from the motive power. At the same time the projecting
part will arrive in contact with the tooth h, whereby a tendency of the cam
shaft to move by impetus will be checked. In like manner when another
change is required the disc k will be slidden further, so as to release the tooth h,
and subsequently the next incline o will again disengage the driving wheels,
after which the carriage or other ordinary part which governs the motion of
the lever r will restore the parts to the starting position, ready to commence
another series of changes. From the foregoing description it will be seen
that the pinion g, through which motive power is communicated to the cam
shaft n, is the instrument of its own disengagement from gear, and it con-
sequently follows that the force exerted in effecting this disengagement is
weakened towards the conclusion of the operation. As an auxiliary power,
therefore, to operate at that time, we use the following arrangement:-To
the framework is fixed a bracket carrying a shed t, on which is mounted a
lever, the upper end being drawn forward by a spring V so far as an
adjustable stop w will allow. The lower end of the lever u carries a roller x,
bearing against a cam of three inclines y, y', y³. This cam is fast with the
wheel d, and consequently with the previously referred to inclines o. During
the operation of the machine, as above described, the incline y pressing against
the roller will cause the lever u to turn upon its centre t, so as to distend the
spring v, and charge it with motive power; but when the projecting part i², as
above mentioned, is approaching the tooth h, and the incline o¹ has nearly
forced the pinion 9 out of gear with the wheel m, then the incline y will have
passed the roller x, and the lower part of the incline y' will present itself
thereto, consequently the charged spring V will be at liberty to act, and will by
pressing against the end of the incline y¹ give an impulse to the incline o',
which will secure the disengagement of the pinion 9 and wheel m, and so on
for the other changes, there being three inclines y, y¹, y, corresponding to the
three inclines o, o¹, o².
Fig. 3 shews another method of carrying our Invention into operation. The
wheels c and m, dise k, with its inclines o, o', 6, and lever f, f*, are, as before
described, but in this instance one of the pinions 9 is dispensed with, and a

page_text: in the
pinion dis mounted on a stud carried by the lever f*, and being constantly in
gear with the wheel c, has continuous rotatory motion. This pinion
position shewn, is out of geer with the wheel m, but when by the above-
described means the lever f, f*, is allowed to turn upon its centre, then the
said pinion will be rolled along the teeth of the wheel c into geer with the
wheel m, and motive power will be communicated to the cam shaft. It will
be observed that in this arrangement the direction of the inclines is reversed,
but the action will be the same, there being one element in the gearing
dispensed with. The other operations are precisely the same as those above
described.
In the foregoing examples we have shewn our Invention as applied to
effecting three changes, but it will be evident that by increasing or diminishing
the number of inclined planes for disconnecting the motive power, more or
less of such changes may be accomplished. It will also be obvious that by
simply reversing the arrangement the toothed wheels may have a tendency to
be forced out of gear by a spring or weight controlled by the relative positions
of the inclines and part against which they act. It will also appear that
revolving teeth or pins in number equal to the changes required may be used
acting against one incline formed upon the lever f, f*, such arrangement
merely being the reverse of that above described.
Having thus described and ascertained the nature of our said Invention, and
the manner of carrying the same into effect, we desire it to be understood
that we claim as secured to us under the above in part recited Letters
Patent, and for the purposes above set forth, the employment of toothed wheels
forced out of gear by revolving inclines, and allowed to pass into gear by the
withdrawal of such inclines, or the equivalent of such arrangement, by the
employment of revolving pins acting against an incline.
In witness whereof, I, the said Eli Spencer, have hereunto set my
hand and seal, this Twelfth day of May, in the year of our Lord One
thousand eight hundred and sixty-four.