Improvements in Slubbing, Roving, and Intermediate Frames used for the Preparation of Fibrous Substances for Spinning.
Year: 1892

page_text: Date of Application, 26th Apr., 1892
Complete Specification Left, 26th Jan., 1893-Accepted, 4th Mar., 1893
PROVISIONAL SPECIFICATION.
Improvements in Slubbing, Roving, and Intermediate Frames used
for the Preparation of Fibrous Substances for Spinning.
We JOHN CAMPBELL of 40 Kempster Street Lower Broughton Manager, and
FREDERICK THOMAS GREENWOOD of 24 Croft Street Joiner both of Manchester
in the County of Lancaster do hereby declare the nature of this invention to be as
follows:-
This invention relates to the construction of slubbing roving, and intermediate
frames employed in the preparation of cotton and other fibrous substances for
spinning, the objects of the invention being to dispense with the "differential
motion" or "Jack in the Box" hitherto employed for giving a gradually decreasing
speed of revolution to the bobbins as their diameter increases, and generally to
simplify the gearing and thus economize the expense and improve the working of
such frames.
We dispense with the use of the "differential motion" principally by the use of
a pair of expanding pulleys which we employ in place of the ordinary cone pulleys
and movable straps, such expanding pulleys being constructed in sections which are
expanded and contracted radially by means of sliding skeleton cones.
These cones are simultaneously moved gradually along either by means of the
ordinary rack which has hitherto been employed for moving the strap fork in
connection with the ordinary cones, or they may be moved by a heart wheel or other
equivalent means. Or, an arm may be hinged at one end to the rack and its other
end may carry a pulley working on an adjustable inclined plane which can be set to
any variation of speed required.
On the bottom cone or expanding pulley shaft is keyed a spur wheel driving a
carrier wheel of similar diameter which actuates a smaller wheel on a counter shaft.
This wheel is a change wheel, the carrier being mounted in a radial slot so as to
vary the speed as required. The counter shaft drives an upright spindle by means
of bevil gear, which spindle drives the bobbin shaft by means of a pair of mitre
wheels, one fixed on the end of the said shaft and the other sliding on a long key
or groove on the spindle so as to allow the copping rail to rise and fall. Or instead
of a pair of mitre wheels skew bevil gear may be employed, in which case the
bobbin shaft may be driven from the centre instead of the end. In either case
the bobbins are driven by skew bevil gear from the bobbin shaft in the usual
manner.
The spindle shaft is driven from the main driving shaft in the usual manner by
toothed gearing. The "Jack in the Box" is entirely dispensed with, and the
differential motion is given only by the expanding pulleys as before mentioned;
the expanding pulley is made with a V-groove which grips the endless band or cord
so as to dispense with all "slip" and we drive these pulleys faster than the cones
are usually driven, by which means we get increased power which renders the
"Jack-in-the-Box" unnecessary.
The upper cone or expanding pulley is not fixed direct on the cone-driving shaft
as usual but upon a separate shaft mounted at about the same height but rather
further back from the roller beam. On one end of the ordinary cone driving shaft
is a spur wheel, cast or fixed to which is an internal toothed wheel which drives a
smaller wheel keyed on the end of the upper expanding pulley shaft, so as to obtain
an increase of speed.
Dated this 25th day of April 1892

page_text: COMPLETE SPECIFICATION.
Improvements in Slubbing, Roving, and Intermediate Frames used
for the Preparation of Fibrous Substances for Spinning.
We JOHN CAMPBELL of 40 Kempster Street Lower Broughton Manager, and
FREDERICK THOMAS GREENWOOD of 24 Croft Street Joiner, both of Manchester
in the County of Lancaster, do hereby declare the nature of this invention and in
what manner the same is to be performed to be particularly described and ascer-
tained in and by the following statement :-
This invention relates to the construction of slubbing roving, and intermediate
frames employed in the preparation of cotton and other fibrous substances for
spinning, the objects of the invention being to dispense with the "differential
motion" or "Jack in the Box "hitherto employed for giving a gradually decreasing
speed of revolution to the bobbins as their diameter increases, and generally to
simplify the gearing and thus economize the expense and improve the working of
such frames.
In order that our invention may be clearly understood we have annexed hereto
two sheets of drawings illustrative thereof, and have marked the same with figures
and letters of reference corresponding with those in the following description
thereof.
On Sheet 1 Fig. 1 is an elevation seen from behind of a method of applying our
invention to the frames above mentioned.
Fig. 2 is a plan of the lower cone pulley and its adjuncts detached.
Figs. 3 and 4 shew a means of regulating the motion of the sliding cones here-
after described.
On Sheet 2, Fig. 5 is a sectional elevation of a pulley made to be driven by a
strap or belt.
"
Figs. 6 and 7 are face view and section of the segments a³ of the said pulley.
According to our invention we dispense with the use of the "differential motion
principally by the use of a pair of expanding pulleys a a which we employ in place
of the ordinary cone pulleys and movable straps, such expanding pulleys being
constructed in sections which are expanded and contracted radially by means of
sliding skeleton cones al a¹. These pulleys are constructed as described in the
Specification of Letters Patent No. 22273 granted to ourselves and dated
21st December 1891.
These cones a a¹ are simultaneously moved gradually along, either by means of
the ordinary rack which has hitherto been employed for moving the strap fork in
connection with the ordinary cones, or they may be moved by a heart wheel or
other cquivalent means.
Or an arm b may be hinged at one end to the rack and at its other end may
carry a pulley 6' working on an adjustable inclined plane or shaper plate bas
shewn detached at Figs. 3 and 4 this end of the arm b'is connected by a link 6* to
the guide which actuates the cones a¹ a².
The inclined plane 6 can be set as shewn to give a variation of speed at any
given part of the motion of the rack and the arm b.
Or the inclined plane may be linked to the arm 6 and to the guide 63 which
actuates the cones a¹ a¹ as shewn on Figs. 1 and 2.
On the bottom cone or expanding pulley shaft c is keyed a spur wheel d driving
a carrier wheel d' of similar diameter which actuates a smaller wheel d on a
counter shaft e.
This wheel d² is a change wheel, the carrier d' being mounted in a radial slot so
as to vary the speed as required. The counter shaft e drives an upright spindle f
by means of bevil gear and this spindle drives the bobbin shaft g by means of
and the
a pair of mitre wheels g¹g one (g') fixed on the end of the said shaft
other (92) sliding on a long key or groove on the spindle f so as to allow the

page_text: copping rail to rise and fall. Or instead of a pair of mitre wheels skew bevil
gear may be employed in which case the bobbin shaft may be driven from the
centre instead of the end. In either case the bobbins i are driven by skew bevil
gear from the bobbin shaft g in the usual manner.
The spindle shaft k is driven from the main driving shaft 7 in the usual manner
by toothed gearing. The "Jack in the Box" is entirely dispensed with and the
differential motion is given only by the expanding pulleys a a as before mentioned.
The expanding pulley is preferably made with a V-groove which grips the endless
band or cord so as to dispense with all "slip" and we drive these pulleys faster
than the cones are usually driven by which means we get increased power which
renders the "Jack in the Box " unnecessary.
The expanding pulleys may however be made with a flat surface to be driven
by an endless band, or strap and in this case we make the segments or sections a² as
shown on Figs. 5, 6, 7 Sheet 2, in order to obtain continuous and parallel driving
surfaces for the said strap or band.
The upper cone or expanding pulley a a is not fixed direct on the cone-driving
shaft m as usual but upon a separate shaft m¹ mounted at about the same height
but rather further back from the roller beam. On one end of the ordinary cone
driving shaft m is a spur wheel n cast or fixed to which is an internal toothed
wheel n which drives a smaller wheel m² keyed on the end of the upper expanding
pulley shaft m³, so as to obtain an increase of speed.
Having now particularly described and ascertained the nature of our said inven-
tion and in what manner the same is to be performed we declare that what we
claim is :-
The improved mechanism for actuating the spindles and bobbins of slubbing
roving and intermediate machines constructed and operating substantially as herein-
before described and illustrated by the aunexed drawings.
Dated this 25th day of Jan 1802
GEO. DAVIES & SON,
4, St. Ann's Square, Manchester, Agents for the Applicants.