IM- PROVEMENTS IN THE METHOD OF AND APPARATUS FOR DOFFING THE BOBBINS FROM OFF THE SPINDLES IN SPINNING AND OTHER SIMILAR MACHINES
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Edward Denby, Joseph Helliwell,
William Hillery, and Wilson Riley, at the Office of the Commissioners of
Patents on the 8th September 1879.
EDWARD DENBY, Clerk, JOSEPH HELLIWELL, Mason, WILLIAM HILLERY, Mason,
and WILSON RILEY, Mechanic, all of Keighley, in the County of York.
"IM-
PROVEMENTS IN THE METHOD OF AND APPARATUS FOR DOFFING THE BOBBINS FROM
OFF THE SPINDLES IN SPINNING AND OTHER SIMILAR MACHINES."
25
The object of our Invention is to arrange the spindles in spinning, twisting,
and roving frames, in such a manner that the bobbins when full of yarn or roving
can be what is technically termed doffed" by mechanical means or by hand
without having to disconnect the flyers from the spindles as hitherto, and thus
effect a great saving by keeping the machinery in operation much longer than can
be accomplished when the frames are doffed in the ordinary manner.
We accomplish our object in the following manner:-At the top of the lifter
rods we form journals in which are mounted a number of shafts, that are secured
together; on these shafts are attached a number of bosses to which are affixed a
number of spindles, radiating to the centre of the said shafts; these shafts and
spindles are capable of being revolved in the aforesaid journals, and are held in
position by means of a catch that fits into a notch or indentation formed in the
periphery of a disc that is secured on to one of the shafts; the number of in-
dentations cut in the periphery of the aforesaid disc, correspond with the number
of radiating spindles that complete a circle.
When the bobbins are full of yarn and ready to be "doffed," the frame is stopped
and the lifter lowered such a distance that the tops of the spindles are clear of the
bottoms of the flyers, the shafts containing the radial spindles are turned in the
journals such a distance that the next series of spindles on which have been placed
the empty bobbins are brought to the top, the spindles are then secured in position
by placing the catch into one of the notches of the disc, and when the lifter is
raised to its working height the frame is ready to be started. The threads of yarn
are cut by means of a series of knives which pass near to the full bobbins, and as
soon as the frame is put in motion the revolving flyers wind the yarn, which has
been severed from the full bobbins around the empty bobbins, and the yarn as it
is delivered from the front rollers is spun on to the same. When the first named
Prins 21

page_text: spindles containing the full bobbins arrive at a certain angle with the lifter rods
the bobbins slide off the spindles and fall on to an endless revolving cloth which
convey the same and deliver them into a skip at the end of the frame.
We can also accomplish our Invention by arranging the spindles as follows: -To
the top side of the lifter plate we secure a number of cups corresponding to the
number of front rollers, the cups having a recess formed on one side of the same,
which when fixed in position is at the front of the frame; at the top of these cups
are circular plates which gear into each other, or into worm wheels secured on a
shaft fixed at the back of the said cups. The plates are centrically with the cups
In each of
and are kept in position by means of a pin passing through the same.
these plates we form two slot holes in line with each other, through each of which
we pass a bracket that is jointed to the boss of the said plate; to the other end of
the said brackets we secure a spindle; these brackets are curved in such a manner
that when the plates are revolved and the brackets brought into the position
required, the spindles that are at the back will be perpendicular and quite firm
or rigid, and those at the front will be projecting outward at an angle on which
the empty bobbins are placed. The flyers are suspended to a bar that extends
the length of the frame, which substitutes the wire board, and when hollow wharls
are used they are mounted in the ordinary manner. When the bobbins on the
perpendicular spindles are full, the lifter is lowered and by revolving the plates on
the top of the cups, the spindles are changed in position, the spindles containing
the full bobbins coming to the front and gradually lowering into an angular
position, at the same time those spindles containing the empty bobbins, are going
to the back and gradually rising into perpendicular position ready for spinning.
The yarn is severed from the full bobbins by a series of knives, and when the
frame is set in motion the severed yarn is wound around and the yarn from the
front rollers is spun on to the empty bobbins. By this arrangement of spindles the
full bobbins have to be taken or "doffed" from off the inclined spindles by hand.