IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS SUBSTANCES
Year: 1883

page_text: LETTERS PATENT to Thomas Coulthard of Preston in the County of
Lancaster, Machinist for an Invention of IMPROVEMENTS IN MACHINERY OR
APPARATUS FOR SPINNING AND DOUBLING COTTON AND OTHER FIBROUS
SUBSTANCES
PROVISIONAL SPECIFICATION left by the said Thomas Coulthard at the
Office of the Commissioners of Patents on the 17th December 1883.
"
THOMAS COULTHARD of Preston in the County of Lancaster Machinist
'IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING AND DOUBLING
COTTON AND OTHER FIBROUS SUBSTANCES
"
This Invention of improvements in machinery or apparatus for spinning and
doubling cotton and other fibrous substances bas reference to ring spinning and
doubling apparatus and consists, firstly, in constructing a sheet metal ring-holder
designed to dispense with the employment of holding-down screws for fastening
the ring-holder to the surface of the ring rail in that class of frames in which the
spindle is self-contained and adjustable. In practice it is found that the
projecting portions of the fastening screws and the ears by which the ordinary flat
sheet metal ring-holders are secured to the ring rail obstruct the operation of
cleaning the upper surface of the rail and moreover cause dust and loose fibre to
collect in the immediate vicinity of the ring. Now according to my invention I
obviate these defects by making the body of the ring-holder in the form of a tube
or socket which may be slightly tapered towards its lower end or otherwise
formed so that the inherent elasticity of the sheet metal will allow of the tube or
socket being pressed down tightly into the hole in the ring rail. The upper edge
of the tube or socket is formed with two or more jaws which clasp or grip the
lower edge of the ring and hold it firmly in position.
The second part of my invention consists in combining with a traveller "clearer"
an arrangement for preventing "ballooning." The combined apparatus is
composed of wire and is fastened to the ring rail by an ordinary holding-down
screw. That portion of the wire opposite the ring may be flattened and set at the
Prins 1

page_text: required angle so as to "clear" or remove from the traveller fibre taken up by it,
whilst the upper portion is bent forward at a suitable distance above the ring and
so that it may surround the bobbin and thereby serve to prevent the yarn or
thread from ballooning. The end of the wire forming the completion of the loop
or circle which surrounds the bobbin is bevelled or chamfered and is made to
slightly overlap; a space or opening being afforded through which the yarn or
thread may be passed. By the above described arrangement increased facilities
for adjusting the position of the ballooning preventer concentrically with the
spindle are afforded and the obstructions (upon which dust and loose fibre collect)
presented by the back rails and other appliances heretofore employed for supporting
the ballooning preventers are removed.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Thomas Coulthard in the Patent Office on the 16th June 1884.
THOMAS COULTHARD of Preston in the County of Lancaster, Machinist,
IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING AND DOUBLING
COTTON AND OTHER FIBROUS SUBSTANCES
This Invention of improvements in machinery or apparatus for spinning and
doubling cotton and other fibrous substances has reference to ring spinning and
doubling apparatus and consists, firstly, in constructing a sheet metal ring-holder
designed to dispense with the employment of holding-down screws for fastening
the ring-holder to the surface of the ring rail in that class of frames in which the
spindle is self-contained and adjustable. In practice it is found that the projecting
portions of the fastening screws and the ears by which the ordinary flat sheet
metal ring-holders are secured to the ring rail obstruct the operation of cleaning
the upper surface of the rail and, moreover, cause dust and loose fibre to collect in
the immediate vicinity of the ring. Now according to my Invention I obviate
these defects by making the body of the ring-holder in the form of a tube or
socket which may be slightly tapered towards its lower end or otherwise formed
so that the inherent elasticity of the sheet metal will allow of the tube or socket
being pressed down tightly into the hole in the ring rail. The upper edge of the
tube or socket is formed with two or more jaws which clasp or grip the lower
edge of the ring and hold it firmly in position. The accompanying Drawings
illustrate the arrangement of ring-holder as above described. Fig 1. is a side
view of my improved ring-holder supporting a double ring a. Figs. 2 and 3 are
respectively sectional and plan views of the ring-holder with the ring removed.
b is he tube or socket forming the body of the ring-holder tapered towards its
lower end, and c, c, c, are jaws formed upon its upper edge. Figs. 4, 5, and 6
illustrate an arrangement of the improved ring-holder in which the body part b,
instead of being tapered as in Figs. 1, 2, and 3 is slightly barrelled as shewn. It
will be obvious that the inherent elasticity of the sheet metal may be made
available for the desired object if the body of the holder be made parallel, that is
to say, without having any taper or barrelling as above described.
"
The second part of my invention consists in combining with a traveller
"clearer an arrangement for preventing "ballooning." The combined apparatus
is composed of wire and is fastened to the ring rail by an ordinary holding-down
screw. That portion of the wire opposite the ring may be flattened and set at the
required angle so as to "clear" or remove from the traveller fibre taken up by it,
whilst the upper portion is bent forward at a suitable distance above the ring and
so that it may surround the bobbin and thereby serve to prevent the yarn or
thread from ballooning. The end of the wire forming the completion of the loop
or circle which surrounds the bobbin is bevilled or chamfered and is made to
slightly overlap; a space or opening being afforded through which the yarn or
thread may be passed. By the above described arrangement increased facilities for
adjusting the position of the ballooning preventer concentrically with the spindle
are afforded, and the obstructions (upon which dust and loose fibre collect)
presented by the back rails and other appliances heretofore employed for supporting
the ballooning preventers are removed.
Having now described the nature of the said Invention and the mode of
carrying it into practical effect, I would have it understood that what I consider

page_text: to be novel and original and therefore claim as my invention is as follows (that is
to say):
1. Constructing sheet metal ring-holders substantially as described and shewn
in the drawings for the purpose specified.
2. The combined traveller "clearer" and "ballooning preventer
and arranged substantially as described.
constructed
In Witness whereof, I, the said Thomas Coulthard have hereunto set my
hand and seal this Fourteenth day of June in the year of Our Lord one thousand
eight hundred and eighty four.
THOMAS COULTHARD (L.S.)