IM- PROVEMENTS IN SPINNING AND COP WINDING MACHINERY AND IN THE CONSTRUCTION OF COP TUBES.
Year: 1879

page_text: PROVISIONAL SPECIFICATION left by Joseph Holding at the Office of the
Commissioners of Patents on the 13th September 1879.
JOSEPH HOLDING, of Manchester, in the County of Lancaster, Engineer, "IM-
PROVEMENTS IN SPINNING AND COP WINDING MACHINERY AND IN THE CONSTRUCTION
OF COP TUBES.
My said Invention relates in the first place to improvements applicable to the
driving of the spindles of spinning machinery, and having for their object the
prevention of slip in the driving bands of such spindles by keeping them always
in a state of tension, irrespective of the variation of temperature in the surrounding
atmosphere or of the stretching of the band itself from whatever cause.
To effect this object I cover the periphery of the drum or cylinder from which
the spindles of such machinery are driven, with a coating of india rubber of
sufficient thickness to be capable of considerable resilience against pressure. When
the driving band is placed in situ around the said india rubber coated cylinder
and also around the grooved pully of the spindle and is made sufficiently taut, it
sinks into the india rubber which yields in the direction of the tension and by its
elasticity follows up the band as it stretches or becomes elongated so as to keep it
constantly at the same or nearly the same tension. The band is thus prevented
from slipping not only because of the preservation of its tension, but also through
the increased contact and grip afforded by the yielding substance. The small
grooved pully on the spindle may also if desired be fitted with an india rubber
ring for the hereinbefore described purposes, and the india rubber both on the
spindle pully and on the driving drum may if desired be protected from the wearing
effect of the band and also from the corrosive action of the lubricants employed by
placing over it a covering of light sheet steel or other metal which must be
sufficiently thin to allow the elasticity of the india rubber beneath to have due
effect.
Another part of my said Invention refers to the cop tubes whereon the weft or
yarn is wound for weaving or other purposes. It has been found in practice that the
said weft or yarn when wound upon the ordinary paper cop tube, is liable at times
to become loose upon and to tend to slip off the cop in the shuttle, during the
weaving operation owing to the shocks administered to the shuttle by the picker.
The yarn thus disturbed upon the cop no longer unwinds freely and must in the
majority of cases be considered as waste. To remedy this defect I roughen the

page_text: surface of the cop tube iu such a manner as to cause the wound-on yarn to adhere
thereto. This roughened surface is or may be produced by raising or indenting
into or upon the periphery of the cop, a screw thread of any desired pitch, or by
means of a series of successive rings, indentations, or corrugations as may be con-
sidered to be most convenient. By these means the yarn or weft when wound
upon the cop adhers firmly thereto until the yarn in the shuttle is entirely ex-
hausted, and by the prevention of waste a considerable economy in material is
effected.
To prevent the cop tube from splitting at the foot through the tear and wear
consequent upon its repeated transference to and from the spindle and shuttle
tongue, I provide it at the foot with a thin metallic lining such as a short length of
light coiled spring or a thin brass or other metal eyelet or cap, which may be fastened
into the tube by an adhesive compound or by other means, and which prevents the
tube from being burst at the foot by internal pressure as herein before described.
Another part of my Invention relates to the drawing rollers of spinning and
other machinery. As at present.constructed these rollers are covered with flannel
and leather which has been found to be easily destroyed by the attritive effects of
the yarn and driving drums. I therefore prefer to coat these rollers with india
rubber which affords the necessary elasticity, while in order to preserve the india
rubber I cover it with thin steel coiled on throughout its length, and secured at the
ends so as to leave no joint or obstruction at the parts over which the yarn passes.