Improvements relating to the Tin Rollers of Spinning and like Machinery.
Year: 1899

page_text: Improvements relating to the Tin Rollers of Spinning and like
Machinery.
We, JOSEPH BROOK, of 337, Idle Road, Bolton, Bradford, in the County of
Yorkshire, Machinist, and THOMAS LEACH, Victoria Works, Water Street, Roch-
dale, in the County of Lancashire, Machinist, do hereby declare the nature of
this invention to be as follows:-
This is a spring coupling composed of two heads, or ends with holes in centre
for shaft to pass through, the same being drawn together with two bolts or set
screws, on which are two tubes of a fixed length to form a double head.
In order to fasten double head to the centre shaft, a single or double spring
clip is placed between the two heads, and over said tubes, loose plates over and
below clips and centre shaft, being drawn together with bolts passing through
the clips, between centre shaft and tubes, to form the grip on centre shaft, the
said coupling to be made in either cast iron or sheet steel.
The said heads are soldered to the tin rollers.
JOSEPH BROOK.
THOMAS LEACH.
Improvements relating to the Tin Rollers of Spinning and like
Machinery.
We, JOSEPH BROOK, of 337, Idle Road, Bolton, Bradford, in the County of
Yorkshire, Machinist, and THOMAS LEACH, of Victoria Works, Water Street, Roch-
dale, in the County of Lancashire, Machinist, 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:-
This invention relates to improvements in couplings for joining up sections of
tin rollers such as are used for the purpose of driving the spindles of spinning
and winding frames, mules, and the like machinery, the object being to provide
a more efficient coupling than those hitherto in use.
In the old form of coupling the bosses were very apt to split when tightening
up and from the necessity of putting them on slack they always ran out of truth.
Flats had also to be made on the shafts for the set screws to tighten against,
which, together with the blacklash in running, caused the set screws to be
F
ล

page_text: jumped up at the ends, which rendered it awkward and almost impossible to
withdraw the shaft for repairs.
The essential features of our invention are that instead of the usual disc to
which is soldered the tin roller and central boss with its slots or set screws or
both for gripping the shaft or arbor we have a couple of dises securely fastened
together by screws, bolts, or equivalent means, which are kept a fixed distance
apart by shouldering or by placing upon then between the discs ferrules or dis-
tance pieces so that they can be screwed up tight together. The said screws are
set parallel with the central shaft and more or less midway between the centre of
the discs and their perimeters. Across these and at right angles with their axes
and between the discs, we place two metal plates or clips which embrace the shaft
and aforesaid screws when drawn together by means of a lifter plate and forcing
screw arrangement to be more particularly described later, thus making an exceed-
ingly firm contact with the shaft which rotates the discs and consequently the
rollers in a perfectly true manner.
We will now proceed to describe our invention more particularly by reference
to the accompanying drawings in which:-
Fig. 1 is an end elevation of our improved coupling as it appears from within
the roller, with steady plate B removed.
Fig. 2 a sectional view in plan of the coupler clip and driving pins, and
Fig. 3 a plan of the coupler and clip plates. Similar letters represent similar
parts in all the figures.
Referring to these A is the main disc to which the tin roller is soldered and to
which are securely fixed what may be termed the driving pins or screws CC¹. E
is the usual connecting shaft or arbor on which A is slipped loosely having a
sliding fit. H, P are the two metal clips which are bored to fit the arbor E when
nipped together by the lifting screws K, N, N so as to get a tight grip of the shaft.
By the same movement the clips H, P are also made to partially embrace the
driving pins C, C₁ in an easy manner without binding, being suitably hollowed
or recessed near the ends at X for this purpose. Between the inner surfaces of the
clips H, P are two springs S, S fixed in recesses in the inner faces of the two clips
and kept in position by the two lifting screws N, N passing through their centres.
The object of the springs is to keep the clips apart by the extension of the
springs whenever the lifting screw K is slacked for the purpose of releasing the
coupler on the arbor E. The lifting arrangement is shown by the combination
of a lifting screw K, lifter plate J, J and supplementary lifting screws N, N and
springs S, S. The lifter plates J, J being laid on the outsides of the clips H, I'
are coupled together by the supplementary screws N, N passing through them and
through the clips H, P and the enclosed springs S, S at points intermediate between
the central arbor E, and the driving pins C, C₁; they may be placed in other
positions but we find this to be the best way. Through one of the lifter plates J
we insert a lifting screw K the point of which rests on the back of the clip H.
The action is then as follows:-
When the lifting screw K is tightened the lifter plate J and the clip H are
forced asunder and the lifting plate J being attached to the lifter plate J¹, on the
back of the opposite clip P on the other side of the shaft E by means of the sup-
plementary screws N, N clip H is pressed against the arbor E on one side and
clip P is drawn into contact with the arbor E. on the other side, thus providing
an intense centripetal pressure for gripping the shaft until the lifter screw K
shall be slackened, when the clips J and J¹ are forced apart by the expansive
action of the springs S, S. We sometimes dispense with the lifter plate J¹ alto-
gether the supplementary screw heads then rest against the back of the clip P.
1, Fig. 2 is one of the distance tubes or ferrules on the driving pin C, while C₁
is a driving pin thickened in the body and shouldered down at the ends so as to
allow of them being fixed firmly into the main disc A and the steady plate B
which is slipped loosely on the shaft E with a sliding fit similar to plate or

page_text: dise A. We prefer the shouldering of the pins to the use of ferrules as being a
better arrangement. Figs. 2 and 3 show plainly the disc B fixed in position. The
whole of the coupling is made of metal or metals suitable for the purpose.
It will be seen that our invention obviates all defects referred to as we get a
strong friction grip equally all round the shaft, the discs are perfectly true and
provide more bearing surface for the rollers, they may therefore be run at much
higher speeds; also by reason of the clips being adjustable there is no rusting of
the shaft to the coupling as in the old style, there is greater facility in fixing
or removing rollers; and better support to the roller ends when fixed to the coupler.
Having now particularly described and ascertained the nature of our said
invention and in what manner the same is to be performed we declare that what
we claim is:-
1. A coupling for tin rollers for spinning and like machinery composed of two
discs, driving pins; spring clips and lifting screw device for gripping the shaft
substantially as and for the purpose described.
2. A coupling for the tin rollers of spinning and like machinery constructed
and arranged substantially in the manner described with reference to the accom-
panying drawings.
TAYLOR & FIRTH,
Osborne Chambers, 48, Sunbridge Road, Bradford,
Agents for the Applicants.