IMPROVEMENTS IN DIFFERENTIAL GEARING FOR PREPARING AND SPINNING MACHINERY
Year: 1886

page_text: We JOSEPH DUGDALE, of Soho Foundry, Blackburn, in the County of Lancaster,
Machine Maker, and JOHN FROST DAVIES, of the same place, Foreman Engineer,
do hereby declare the nature of said Invention for IMPROVEMENTS IN DIFFERENTIAL
GEARING FOR PREPARING AND SPINNING MACHINERY, and in what manner the
same is to be performed, to be particularly described and ascertained in and by
the following statement:-
The object of this Invention is to provide an improved construction and arrange-
ment of differential gearing for varying the speed of machinery employed in
preparing and spinning cotton, flax, wool, and other fibrous materials.
The apparatus consists essentially of a wheel with internal teeth and a toothed
wheel placed within the teeth of the internally toothed wheel into which it is free
to gear when moved by an eccentric on which it is mounted. A disc wheel is fixed
on the shaft or other axis between the internal and toothed wheels and connected
by pins or studs to the latter.
And in order that our Invention may be fully understood and readily carried
into effect we will describe the accompanying three Sheets of Drawings, reference
being had to the figures and letters marked thereon.
Figure 1 is a side view and Fig. 2 a plan of part of a roving or intermediate
frame to which our improved differential gearing is applied. Fig. 3 is a sectional
elevation of the differential gearing and Figs. 4, 5 and 6 are detailed views showing
parts of the same.
Similar letters refer to similar parts throughout the several views.
In these views-a is the frame of the machine; b the main or jack shaft driven
by a pulley 61; secured to the shaft b is the usual pinion 62 which gives motion to
the upper cone shaft c by a train of wheels as shown in Fig. 1. The belt c¹ actuated
by the usual strap fork or guide, not shown, gives a varying speed to the lower
cone on the shaft.d which carries a pinion d¹ connected by gearing to a pinion s
which forms part of our differential gearing illustrated most clearly by the sectional
view, Fig. 3. The pinion e is secured to one end of a long bush or sleeve e¹ formed
with an eccentric boss e on which is fitted loosely a toothed wheelf with pins
or projections fl which project into holes in a disc wheel 9 secured to the main

page_text: .
shaft b. Surrounding the toothed wheelf and the disc g is an internally toothed
wheel loose on the shaft b and on the boss of the wheel h is secured a pinion i
which is geared, see Fig. 2, by a train of wheels to the "swing" and the bottom
shafts jon which are mounted the usual wheels for driving the bobbins k.
Fig. 4 shows the wheel fin gear with the internal wheel h. Fig. 5 the wheel h
and disc g, and Fig. 6 a sectional view of Fig. 4 looking from the other side showing
the position of the pins fl in the holes of the disc g.
The operation of the differential gearing is as follows:- -The pinion e with the
sleeve-e and eccentric boss e* receive a varying speed from the lower cone-shaft d
while the disc wheel g fast on and revolving, with the main, shaft b carries round
with it by means of the pins f¹ the toothed wheel f. In addition to this revolving
motion the wheel f also receives from the eccentric e³ an oscillating movement to
and from the axis of the shaft b the speed depending upon and varying with the
speed at which the pinion e is driven and these movements of the toothed wheel f
combined impart a relatively varying revolving motion to the internally toothed
wheel which motion is communicated by. the pinion i and train of wheels to the
bobbin shafts and so to the bobbins k.
It is obvious that instead of six pins f¹ other number more or less might be
employed and instead of the pins being secured to the wheel f they might be fixed
on the disc g and the holes made in the wheel f.
Our improved differential gearing placed either on the first motion or other
suitable driving shaft may be applied to all classes of preparing and spinning
machinery where such a varying motion would be advantageous or desirable.
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. The use and application of mechanism substantially as herein described and
as illustrated by the Drawings for the purpose of imparting a differential speed to
preparing and spinning machinery.
2. In the driving mechanism of preparing and spinning machinery the combina
tion with a revolving eccentric and a toothed wheel mounted upon said eccentric
and placed within an internally toothed wheel, of a disc wheel secured upon the
driving or other revolving shaft and engaged with the said toothed wheel substan-
tially in the manner herein described with reference to the Drawings.
.BA