IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING OR DOUBLING COTTON AND OTHER FIBROUS SUBSTANCES
Year: 1882

page_text: LETTERS PATENT to Thomas Coulthard of Cooper Road, Preston, in the
County of Lancaster, Machinist for an Invention of IMPROVEMENTS IN
MACHINERY OR APPARATUS FOR SPINNING OR DOUBLING COTTON AND
OTHER FIBROUS SUBSTANCES
PROVISIONAL SPECIFICATION left by the said Thomas Coulthard at the
Office of the Commissioners of Patents on the 4th October 1882.
66
THOMAS COULTHARD of Cooper Road, Preston in the County of Lancaster,
Machinist, IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING OR
DOUBLING COTTON AND OTHER FIBROUS SUBSTANCES
ا,
This invention relates, firstly, to "self-contained" spindle apparatus of the
"Rabbeth" type in which a spring, hook, screw or other device is employed to
hold down in position the spindle and sleeve upon which the bobbin is mounted.
Such devices are usually so arranged that a hook or lip projects over the top of
the "whirl" or "wharve" which hook or lip has to be sprung back or turned to
one side as the case may be when it is desired to remove the spindle and sleeve
from the bolster. According to my Invention the hook which is preferably made
of wire, is formed at its upper end in the usual manner, but its lower end is bent
or turned side ways and then forward in such manner that by lifting or raising
the lower portion bent forward; that is to say towards the front of the frame, the
hook or upper end is moved backward so as to be clear of the "whirl" or
"wharve." Grooves are formed in the flange of the pillar or bolster to answer as
guide bearings in which the portion of the hook which is bent sideways may
swivel. The portion which is bent forward is made sufficiently heavy as of its
own weight to bring the hook forward and keep it in position over the "whirl"
or "wharve."
My invention relates, secondly, to an improved arrangement for supporting the
porcelain thread guide commonly used in worsted spinning frames. I mount the
porcelain thread guide which may be of the usual or any other convenient shape,
ID 031

page_text: in a sheet metal holder secured to the thread board by a screw passing through a
slot opening in the holder, this arrangement permitting of the position of the
thread guide being adjusted as may be required. The other or projecting end of
the holder is formed with a cup like recess in which the thread guide is supported
or clasped, a notch or opening in the holder corresponding with and receiving the
usual notch in the exterior of the guide.
My invention relates, thirdly, to an improvement in the construction of that
class of ring traveller in which a projecting arm is attached to tho traveller.
Heretofore such projecting arms have been made separately and afterwards attached
to the travellers. My improvement consists in forming the traveller and projecting
arm of one piece of wire so arranged that the arm may accommodate itself to the
varying diameter of the cop or bobbin.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed by
the said Thomas Coulthard in the Great Seal Patent Office on the 3rd April
1883.
THOMAS COULTHARD of Cooper Road Preston in the County of Lancaster
Machinist IMPROVEMENTS IN MACHINERY OR APPARATUS FOR SPINNING OR
DOUBLING COTTON AND OTHER FIBROUS SUBSTANCES
This Invention relates, firstly, to "self-contained spindle" apparatus of the
Rabbeth type in which a spring, hook, screw, or other device is employed to hold
down in position the spindle and sleeve upon which the bobbin is mounted. Such
devices are usually so arranged that a hook or lip projects over the top of the
"whirl" or "warve" which hook or lip has to be sprung back. or turned to one
side as the case may be when it is desired to remove the spindle and sleeve from
the bolster. According to my Invention the hook which is preferably made of
wire is formed at its upper end in the usual manner but its lower end is bent or
turned sideways and then forward in such manner that by lifting or raising the
lower portion bent forward that is to say towards the front of the frame the hook
or upper end is moved backward so as to be clear of the "whirl" or warve."
Grooves are formed in the flange of the pillar or bolster to answer as guide
bearings in which the portion of the hook which is bent sideways may swivel.
The portion which is bent forward is made sufficiently heavy as of its own weight
to bring the hook forward and keep it in position over the whirl or warve.
"
In the accompanying Drawings Fig. 1 is a side view and Fig. 2 a plan view of
Rabbeth spindle apparatus fitted with the improved arrangement of hook heroin-
above described. a is the spindle which carries the sleeve b and the whirl or
warve c. d is the improved hook formed at its upper end 1 in the usual manner
and bent forward at its lower end 2 towards the front of the spindle rail e. The
groove fencloses the portion of the hook bent sideways 3 and answers as a guide
bearing. The lower end 4 of the upright portion of the hook projects somewhat
behind the guide bearing thereby forming a stop for preventing the hook from
being pushed too far back. Fig. 3 is a side view and Fig. 4 a plan view partly in
section shewing an arrangement in which that part of the hook bent forward 2 is
enclosed within a groove or recess g formed in the under side of the bolster flange h,
Figs. 5 and 6 illustrate a modification of the arrangement shewn in Figs. 3 and 4,
the portion 2 of the hook being made in the form of a ring and enclosed within
an annular groove i formed in the bolster flange. In the two last described
arrangements the portion 4 of the hook answering as a stop (shewn in Fig. 1) is
unnecessary as the depth of the grooves or recesses g (in Figs. 3 and 4) and i (in
Figs. 5 and 6) will obviously determine the distance to which the upper end 1 of
the hook d may be pushed back.
The arrangement of hook constructed and operating as described entirely
obviates the annoyance and cost of repairs incidental to hooks which are screwed
into the bolster flanges, sliding bars, or cast iron carriers and which in practice
constantly become loose and out of order; whilst the swivelling or guide bearing
portion of my improved hook is much stronger and more durable than any of the
existing arrangements of swivelling hooks known to me in which the hook itself
or the carrier into which the hook is screwed is mounted upon a rivetted wire pin
or axis. Moreover my improved hook permits of the bolster and the bolster rail
being readily cleaned especially with the arrangements shewn in Figs. 3 and 5 in
which only the upright portion of the book is exposed.
My Invention relates; secondly, to an improved arrangement for supporting the
porcelain thread guide commonly used in worsted spinning frames. I mount the
porcelain thread guide which may be of the usual or any other convenient shape in
'

page_text: a sheet metal holder secured to the thread board by a scrow passing through a.slot
opening in the holder, this arrangement permitting of the position of the thread
guide being adjusted as may be required. The other or projecting end of the holder
is formed with a cup-like recess in which the thread guide is supported or clasped,
a notch or opening in the holder corresponding with and receiving the usual notch
on the exterior of the guide.
Fig. 7 is a plau view and Fig. 8 a sido view in section in which / is the improved
thread guide holder which is screwed to the thread board of worsted or silk
spinning frames by a screw passing through the slot-opening lm is the porcelain
thread guide clasped within the cup-like recess n to which it may be more securely
fastened by plaster of Paris or other suitable cement.
My Invention relates, thirdly, to an improvement in that class of ring travellers
in which a projecting arm is attached to the traveller. Heretofore such projecting.
arms have been made separately and afterwards attached to the traveller. My
improvement consists in forming the traveller and projecting arm of one piece of
wire so arranged that the arm inay accommodate itself to the varying diameter of
the cop or bobbin.
Fig. 9 shews in plan view the form of the improved traveller and its relativo
position when passing the thread or yarn to the empty and full bobbin respectively;
the position and angle of the arm o to the traveller p being such that at any
greater or less diameter of bobbin the lips qq of the traveller p will not bind.upon
both sides of the web 7 of the ring 8. Figs. 10 aud 11 illustrate more clearly the
construction of the traveller and the directions in which the wire is bent so as to
form the combined traveller and projecting arm of one piece of wire. Figs. 12,
13 and 14 also illustrate my invention as applied to other forms of ring travollers
in common use. It will be evident that for doubling or twisting the projecting
arm will be in a reverse direction (relatively to the traveller) to those designed for
spinning as shewn in the several Figures.
As regards the first part of my invention, I am aware that hooks mounted upon
a pivot, hinge, or fulcrum liave been heretofore in use and that such hooks have.
been caused to assume the required position relatively to the whirl or warve of
spindle apparatus either by the pressure of a spring or of a weight; but such hooks
necessitate the employment of a pivot or pin, forming the fulcrum or axis, separate
and distinct from the look itself, whereas by my invention the hook, pivot, and
weight form one piece or part only.
Having now described the nature of my said Invention and the manner of
performing it, I would have it understood that what I consider to be novel and
original and therefore claim as the Invention secured to me by the herein before in
part recited Letters Patent is as follows (that is to say):
1. The improved hook constructed arranged and operating substantially as
described and shewn in Figs. 1, 2, 3, 4, 5, and of the Drawings for the purpose
specified.
2. The sheet metal thread guide holder constructed and arranged substantially
as described and shewn in Figs. 7 and 8 of the Drawings.
3. Forming ring travellers having projecting arms of one piece of wire
substantially as described and shown in Figs. 9, 10, 11, 12, 13, and 14 of the
Drawings.
In Witness whereof I the said Thomas Coulthard have hereunto set my band
and seal this second day of April in the year of our Lord one thousand