Improved Builder Motion for Making Pirns and Cops on Spinning, Twisting, and Winding Machines.
Year: 1897

page_text: Date of Application, 5th Apr., 1897
Complete Specification Left, 25th Jan., 1898—Accepted, 12th Mar., 1898
Improved Builder Motion for Making Pirns and Cops on Spinning,
Twisting, and Winding Machines.
I, SINCLAIR HUNTER, 2, Springfield Villas, Belfast, County Antrim, Ireland,
Foundry Manager; do hereby declare the nature of this invention to be as
follows: :-
This invention relates to improvements in the motion or purpose for operating
the builders of spinning, twisting, winding, and similar machines when producing
pirns or cops. The builder shaft is made to oscillate in the usual manner by means
of a chain attached to and passing over a lever or projecting piece commonly called
the eccentric upon the builder shaft, this said eccentric fits loosely on the shaft
having a boss or socket at one side whilst a worm wheel is fixed upon the shaft
and let into a recess on the opposite side of the eccentric.
Gearing into the said worm wheel is a worm upon a small shaft carried by pro-
jections on underside of the eccentric and between the projections, at one end of
this worm shaft an index wheel of any number of teeth is fixed and this index is
actuated by a pall or catch attached to a small lever which comes in contact with
an adjustable fixed incline point so as to throw the indices one or more teeth for-
ward for each stroke of the eccentric, the motion of the index moves the worm and
worm wheel and causes the builder shaft to turn round slightly in relation to the
eccentric thus causing a gradual descent of the builder as the pirn or cop is formed.
On the opposite end of the said small worm shaft to the index wheel provision
is made for a handle by which the builder may be wound back to their proper
place after each doff. A blank tooth upon the worm wheel or a notch cut out of
the boss on the eccentric to fit a corresponding projection on a loose boss which
may be fixed to the builder shaft by means of a set screw is used to form a stop
when winding up to the proper height after each doff. A set screw in the boss of
the eccentric may be used for the purpose of locking the builder shaft and the
eccentric together when not required for building pirns or cops.
The above eccentric can be used in conjunction with the quadrant motion at
present in use for raising and lowering the builders.
Dated thin and day of An 1807
Improved Builder Motion for Making Pirns and Cops on Spinning,
Twisting, and Winding Machines.
SINCLAIR HUNTER, of No. 2, Springfield Villas, Belfast, Co. Antrim, Foundry
Manager, do hereby declare the nature of this invention and in what manner the
Price Sd.]

page_text: same is to be performed, to be particularly described and ascertained in and by the
following statement:-
This invention relates to improvements in and additions to the mechanism com-
monly employed for transmitting motion to the builders of spinning, twisting,
winding and similar machines so that cops or pirns may be spun or.produced on
them.
In making use of this invention I cause the builder shafts to partially rotate,
alternately in opposite directions, in the usual manner by means of a chain con-
nected at one end to the oscillating quadrant and at the other to the heart shaped
lever or eccentric mounted for this purpose upon the builder shaft.
Instead of firmly keying this eccentric to the builder shaft I attach it loosely
providing it with a projecting boss on one side and with a recess or cavity on the
other for the reception of a worm wheel: this worm wheel I secure to the builder
shaft by means of a set screw or key.
I furnish the eccentric at its under side with suitably formed projecting lugs to
carry a spindle or arbour upon which and between these lugs I fix a worm wheel whose
threads engage with the teeth of the worm wheel fastened to the builder shaft.
To one end of the worm spindle I attach an index wheel by means of a feather and
nut, so that it may be readily changed for another having fewer or more teeth as
required, and to the opposite end of the worm spindle a handle or hand wheel to
restore the apparatus to its original position after doffing of the pirns or cops has
taken place.
To ensure accuracy in setting I furnish the worm wheel with a blank tooth
which prevents its revolution in either direction beyond the desired limit.
At a suitable point in the lower side of the eccentric I pivot a lever fitted with
a pawl to engage with the teeth of the above described index wheel: this lever is
actuated, as the builder shaft rotates, by coming into contact with an adjustable
stop fitted to the framing of the machine.
Seeing that points taken in the eccentric and builder shaft equidistant from their
common centre always describe the same length of arc of the same circle it will be
apparent that by employing this mechanism their equal arcs of travel, originally
co-incident, become separated from each other and that the increment of this
separation, added at the end of each complete stroke of the quadrant, is directly
proportional to the fineness or coarseness of pitch of the teeth of the index wheel
used so that the builders, fastened directly to the builder shaft, participate in the
change of position of the builder shaft, relative to the eccentric, and gradually
descend through a greater or less space as coarse or fine pirns or cops are to be
formed.
Referring to the accompanying sheet of drawings, in which the same reference
letters designate the same parts, Figs. 1 and 2 are a front and side elevation,
respectively, of my invention, mounted on the builder shaft, a, b is the eccentric ;
c, the lugs carrying the worm spindle, or arbour d: with its worm, c, and index
and hand wheel, f, and g, respectively: h, is the worm wheel let into a recess, j,
Figs. 4 and 5; Figs. 3, 4 and 5 are back, front and side elevations respectively of
my improved eccentric: in these, m, is the provision for carrying the actuating
lever and its pawl, 1, Figs. 6 and 7 are side and front elevations, respectively, of
this lever and its pawl. Figs. 8 and 9 are an end and side elevation, respectively,
of the worm wheel.
Having now particularly described and ascertained the nature of my said
invention, and in what manner the same is to be performed, I declare that what
I claim is:
1st. The use in spinning, twisting, winding and similar machines of an eccentric
provided with a boss on one side and recessed for the reception of a worm wheel
on the other, substantially, as described and drawn.
2nd. The use in spinning, twisting, winding, and similar machines, of the com-
bination of a heart, or eccentric, a worm wheel, a worm and an index wheel, for

page_text: the purpose of giving a drop or descent to the builders of such machines at the end
of each stroke of the quadrant, or its equivalent, when pirns or cops are being
made or produced, substantially, as herein described and drawn.
Dated this 24th day of January 1898.