Year: 1885

page_text: We ROBERT NIVIN COTTRILL of Bolton-le-Moors in the County of Lancaster
Spindle Maker and JOHN MUIR HETHERINGTON of Pollard Street Manchester in
the same County Machine Maker do hereby declare the nature of this Invention to
be as follows:-
Our Invention relates to the spindles used in the spinning of fibrous materials
and particularly to the spindles which are mounted to revolve in long bolsters and
are liable to be lifted out of their bearings in the operation of doffing. To prevent
or limit this lifting of the spindles hooked wires turn buttons and other appliances
which have been turned or brought into position over the wharve or over a flange
thereon have been employed these appliances being turned out of the way when it is
necessary to lift the spindle out of the bolster for the purpose of cleaning the bearings
or for other reasons. In our invention we employ a stop or detent which does not
require to be moved out of the way but when necessary by a revolving motion
permits of the lifting out of the spindle such revolving motion being derived from
the sleeve upon the spindle. The said detent is in the form of a screw or worm
which is mounted to revolve upon an axis which is about parallel with the spindle
axis being carried by a suitable stump, pillar or part. The spiral worm or thread
may conveniently be made to take a little over one turn around its axis and by
preference is rounded on its edge. This worm projects over the wharve or over a
flange upon the wharve or sleeve and acts as the detent. When the spindle is
lifted with a slight revolving motion in one direction or the other according as the
worm is right or left hand the worm revolves and liberates the spindle. A similar
movement in the contrary direction enables the spindle to be replaced.
We prefer
to chamfer, hollow or shape the edge of the wharve or part which acts
worm to suit the shape of the same.
upon the
A
"

page_text: An Improved Means for Holding Down the Spindles of Spinning
Machinery.
We ROBERT NIVIN COTTRILL of Bolton-le-Moors in the County of Lancaster
Spindle Maker, and JOHN MUIR HETHERINGTON of Pollard Street, Manchester in
the same County Machine Maker, do hereby declare the nature of this invention
and in what manner the same is to be performed to be particularly described and
ascertained in and by the following statement and accompanying drawings
Our Invention relates to the spindles used in the spinning of fibrous materials
and particularly to the spindles which are mounted to revolve in long bolsters and
are liable to be lifted out of their bearings in the operation of doffing. To prevent
or limit this lifting of the spindles hooked wires turn buttons and other appliances
which have been turned or brought into position over the wharve or over a flange
thereon have been employed these appliances having been turned out of the way
when it has been necessary to lift the spindle out of the bolster for the purpose of
cleaning the bearings or for other reasons. In our invention we employ a stop or
detent which does not require to be moved out of the way but when necessary by
a revolving motion permits of the lifting out of the spindle such revolving motion
being derived from the sleeve upon the spindle. The said detent is in the form of
a screw or worm which is mounted to revolve upon an axis which is about parallel
with the spindle axis being carried by a suitable stump pillar or part. Our
invention will be best understood when described with reference to the accom-
panying drawings in which are illustrated three slightly differing arrangements
whereby our invention may be carried into effect. In all three Figs. a. is a spindle
fitted to revolve in a bolster b. and provided with a sleeve c. upon which is the
wharve d. whereby the spindle is driven these parts being of ordinary construction
and formation with the exception of the wharve in Fig. 2. Secured to the
collar 6' which is formed upon the bolster is a post or pillar e. which is turned
down at its upper end to receive a short worm or screw f. This worm is cast cut
or formed with a spiral thread which in the example makes about one complete
turn around the axis or a little over one turn this being sufficient for our purpose.
It will be seen that this thread projects over a part of the wharve and acts as a
detent to prevent the spindle from being lifted out of the bolster when the bobbin
or cop of yaru is being doffed. When it is desirable to lift out the spindle it is only
necessary to give the spindle a slight turn in the right direction when it is lifted
into contact with the worm. The direction in which the spindle is to be turned
will depend upon whether the worm has a right hand or left hand thread. To
replace the spindle it is turned in the opposite direction whilst it is being lowered
into its place. It is advisable that the direction in which the spindle is turned
when being lifted out of the bolster shall be the opposite to the direction of
revolution when the spindle is at work. In Fig. 1. the worm projects over the
bottom edge of the wharve this edge being larger in diameter than the upper edge.
In Fig. 3 the worm projects over the top edge which is larger in diameter than
the bottom edge. In Fig. 3 a special flange or projecting edge is formed upon
i

page_text: the sleeve and the worm projects over this special edge. It will be obvious that
our invention is applicable to the spindles of doubling machines. We do not
confine ourselves to the exact formation of the worm or screw nor to the manner
in which it is carried or mounted.
Having now particularly described and ascertained the nature of the said
invention and in what manner the same is to be performed we declare that what
we claim is
1. As a detent for the indicated uses the worm f. mounted upon a stump or
pillar e. and projecting over a turned edge formed on the wharve or sleeve in the
manner substantially as set forth and indicated.
2. As means for preventing the lifting of a spindle of the indicated kind during
the doffing; mounting a revolvable worm or screw so that its worm projects over
a part upon the sleeve so as to obstruct the lifting of the spindle when the spindle
is not at the same time turned upon its axis in the proper direction substantially.as-
set forth and indicated.