AN IMPROVEMENT IN THE ROVING DELIVERY MECHANISM OF DRAWING FRAMES, CARDING MACHINES OR ENGINES, AND OTHER SIMILAR MACHINERY
Year: 1881

page_text: PROVISIONAL SPECIFICATION left, by Bristow Hunt at the Office of the
Commissioners of Patents on the 8th April 1881. A communication from
abroad by Joseph Pollitt, of Philadelphia, Pennsylvania, in the United States
of America.
BRISTOW HUNT, of Serle Street, Lincoln's Inn, in the County of Middlesex,
Gentleman. "AN IMPROVEMENT IN THE ROVING DELIVERY MECHANISM OF
DRAWING FRAMES, CARDING MACHINES OR ENGINES, AND OTHER SIMILAR
MACHINERY." (A communication from abroad by Joseph Pollitt, of Philadelphia,
Pennsylvania, in the United States of America.)
This Invention relates to an improvement in roving delivery mechanism of
drawing frames and carding engines, and other similar machinery, and consists of
a device, described hereinafter, for so directing the slivers in drawing frames and
carding engines to the coilers by which the said slivers are directed into the
receiving cans, that the passage of the sliver from the rollers to the orifice of the
coiler, and through the inclined passage of the same shall not be interrupted.
The drawing frame or carding engine is constructed with the usual two delivery
rolls, one of which being slightly above the other, and its journals being adapted
to inclined slots in the frame, so that the sliver will be pressed by the higher roller
against the other roller.
The frame, which forms a part of the general framework of the machine, supports
the coiler, which is adapted to an annular recess in the said frame, and has teeth
on its periphery, so as to be driven by a pinion on a vertical shaft, and it has also
an inclined opening, through which the sliver passes from between the rollers to
the can placed beneath the coiler.
A stationary cover supported by the frame encloses the coiler. This cover,
which has a central opening for admitting the sliver, has its flange cut away at one
point to permit the pinion on the vertical shaft to properly engage in the teeth on
the periphery of the coiler.
These parts, hereinbefore enumerated, have all been heretofore used in connection
with drawing frames or carding engines.

page_text: The rollers are driven as usual at appropriate speed, and the sliver is drawn
downward by the two rollers, and delivered thereby through the opening in the
cover, and through the inclined opening in the coiler, by which the sliver is coiled
as it is delived into the can below.
When undyed cotton is operated on by the drawing frames the sliver in most
cases passes freely through the cover and coiler of the ordinary construction without
interruption; but when dyed cotton is used, the passage of the sliver through the
coiler is frequently interrupted, the opening in the coiler being choked, and the
sliver accumulating in a mass between it and the cover, or between the latter and
the rolls, and this involves the necessity of stopping the machine in order to clean
away the obstructing sliver.
To obviate this difficulty, the inventor of the present improvement combines with
the coiler and rolls a throat-piece, the opposite sides of which are curved to accord
with the feed rollers, the opposite ends extending upward between the rollers. The
central opening of the throat-piece is restricted to such dimensions that while the
sliver can pass freely through it to the entrance of the inclined passage in the coiler,
the entrance to this opening is so bounded by the feed rollers, and by the upwardly
projecting ends of the throat piece, that there is no avenue of escape for the sliver,
excepting through the passage in the said throat piece to the inclined passage of
the coiler.
In the present instance the base of the throat-piece is circular, and is in contact,
or nearly so, with the upper edge of the cover plate of the coiler, two arms projecting
from the throat piece, either or both of which arms may be fitted to the cover and
secured thereto.
The rollers should be as near to the throat piece as possible, without being in
absolute contact therewith.