Improvements in Slubbing Intermediate Roving and Jack- frames" Employed in the Preparation of Cotton and other Fibrous Substances.
Year: 1888

page_text: Date of Application, 27th Aug., 1888
Complete Specification Left. 27th May, 1889-Accepted, 29th June, 1889
PROVISIONAL SPECIFICATION.
"
Improvements in Slubbing Intermediate Roving and Jack-
frames" Employed in the Preparation of Cotton and other
Fibrous Substances.
We RICHARD CURTIS of the firm of Messieurs Curtis Sons and Company of
Manchester in the County of Lancaster Machine Makers and WILLIAM HENRY
RHODES of the same place Foreman do hereby declare the nature of this invention to
be as follows:
This invention relates to roving frames and similar apparatus used in the prepara-
tion of cotton and other fibrous substances wherein the bobbins rise and fall and are
actuated by toothed gearing and "Jack-in-the-box" or differential motion, our object
being first to do away with a portion of the toothed gearing and the "swing
employed in such frames and secondly to simplify the mechanism employed for the
differential driving of the bobbins.
"
Instead of the spur wheel which is loose on the driving shaft and is in connection
with the ordinary "Jack-in-the-box motion we employ a grooved pulley, and
instead of the usual "swing" and carrier wheels for actuating the bobbins we
employ the following means.
On one of the bobbin shafts is a spur wheel driven by a pinion mounted on a stud
carried by a suitable bracket attached to the bobbin carriage, and to this pinion is
fixed a grooved pulley.
In a convenient position and carried by a suitable bracket on the framing of
the machine we mount a lever or arm on the fulcrum of which are mounted
loosely two grooved guide pulleys and at the end thereof is another pair of
guide pulleys; an adjustable tightening pulley being also carried upon the said
lever or arm, which is connected by a suitable rod or link to the bobbin carriage in
such a way that the guide pulleys at the end of the same will rise and fall simul-
taneously and equidistantly with the said carriage.
By the use of these guide pulleys a single band may be used to drive the above
named pinion (which actuates the bobbin shafts) and the length of this band will be
the same whatever may be the position of the carriage.
"
The pulley carried upon the driving shaft is connected to and actuated by the
ordinary "Jack-in-the box or differential motion to obtain the differential driving
of the bobbins. Or we may use (for this purpose) the following simplified mechanism
which forms the second part of our invention.
"
We dispense with the said "Jack-in-the-box motion cones and strap, and we
mount upon the driving shaft a pulley with an expanding twitch or groove round
which passes the above named band which drives the bobbin shaft, and we govern
the expansion of the said pulley (by preference) in the following manner.
The boss of the sliding portion of the pulloy provided with a groove in which
works a bowl or projection on a lever, this lever is connected by a suitable link to one
end of a second lever, preferably bell cranked, weighted at its other end and
provided with a bowl or projection resting upon an incline or shaper plate fixed on
the usual "rack" of the machine which is supported beneath the said shaper plate by
a suitable fixed bracket carrying an anti-friction bowl or roller.
The form of the said incline or shaper plate is such that as the rack is moved in
the usual way the bowl or projection on the aforesaid bell cranked lever will cause
the latter to govern the expansion of the twitch or groove in the pulley in the
proportion required for the decrease of the revolution of the bobbins.
Dated this 25th day of August 1888.

page_text: COMPLETE SPECIFICATION.
Improvements in Slubbing Intermediate Roving and "Jack
Frames" Employed in the Preparation of Cotton and other
Fibrous Substances.
We RICHARD CURTIS of the firm of Messieurs Curtis Sons and Company of
Manchester in the County of Lancaster, Machine Makers, and WILLIAM HENRY
RHODES of the same place, Foreman 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 roving frames and similar apparatus used in the pre-
paration of cotton and other fibrous substances wherein the bobbins rise and fall and
are actuated by toothed gearing and "Jack-in-the-box or differential motion, our
object being first to do away with a portion of the toothed gearing and the
swing" employed in such frames and secondly to simplify the mechanisin employed
for the diferential driving of the bobbins.
66
The nature of our said invention and the manner in which the same is to be
performed or carried into practical effect will be readily understood on reference
to the two sheets of drawings hereunto annexed and the following explanation
thereof.
Fig. 1. on Sheet 1. of the drawings is a back view of so much of a roving frame
as is necessary to illustrate the application of our invention thereto, and Fig. 2 on
Sheet 2. is a sectional elevation of the same. Figs. 3 and 4 (Sheet 2) are side and
face views (on an enlarged scale), of the expanding grooved pulley, and Figs. 5
and 6 (Sheet 1.) are other detached portions of the mechanism bereinafter more
particularly referred to.
66
"
Instead of the usual spur wheel which is loose upon the driving shaft b and is in
connection with the ordinary Jack-in-the-box motion we employ a grooved
pulley (as hereinafter described) and instead of the "swing" and carrier wheels for
actuating the hobbins we employ the following means.
On one of the bobbin shafts d (Fig. 2) is a spur wheel e driven by a pinion f
mounted on a stud carried by a suitable bracket g attached to the bobbin carriage h
and to this pinion is fixed a grooved pulley i.
In a convenient position and carried by a suitable bracket in the framing a of the
machine we mount a lever or arm k on the fulcrum of which are mounted loosely two
grooved pulleys 7 (Fig. 1) and at the end thereof is another pair of guide pulleys m;
an adjustable tightening pulley may also be carried by the said lever or arm, or
(which we prefer) the arm itself may be lengthened or shortened by means of a
slide and an adjusting screw o (see Fig. 2).
12
The arm is connected by a suitable rod or link p to the bobbin carriage in such a
way that the guide pulleys m at the end of the same will rise and fall simultaneously
and equidistantly with the said carriage.
The grooved pulleys are carried by a short lever to the other end of
which is attached a coiled spring r which keeps the driving bands at the proper
tension.
The pulley carried upon the driving shaft may be actuated by the ordinary "Jack-
in-the-box or differential motion, to obtain the differential driving of the bobbins
but we prefer to use (for this purpose) the following simplified mechanism which
forms the second part of the invention.
We dispense with the said "Jack-in-the-box" motion and we mount upon the
driving shaft a pulley t (shown on a larger scale at Figs. 3. and 4) the grooved portion
of which is made in radial sections (see Fig. 4) through each of which passes one of
the rods or rails of the conical frame t¹.
The diset, of the expanding pulley is keyed by its boss onto the shaft and the
conical frame t', is mounted so as to slide thereon, and the conical rods or rail
passing through holes in the grooved sections cause the latter to be expanded o

page_text: contracted as required. The band which drives the bobbin shaft passes round this
expanding pulley (see Fig. 2) and we govern the expansion of the said pulley (by
preference) in the following manner.
The boss of the sliding portions or conical frame t¹ of the expanding pulley is
provided with a groove u in which works a bowl or projection on a lever v (Fig. 1.)
This lever is connected by suitable links and lever w to one arm of a bell cranked
lever the other arm of which is weighted and provided with a bowl or projection y
resting upon an incline or shaper plate z, fixed on the usual rack 1. of the machine
which is supported beneath the shaper plate by a suitable fixed bracket carrying
an antifriction bowl or roller 2.
The form of the said incline or shaper plate is such that as the rack is moved in the
usual way the bowl or projection y on the aforesaid bell crank lever x will cause the
latter to govern the expansion of the "twitch" or groove in the pulley t, in the
proportion required for the decrease of the revolution of the bobbins.
In some cases we propose to substitute a snail cam 3 (see detached view Fig. 5)
for the incline z in which case the said snail cam is caused to revolve by the "bevil
gearing as shown.
We also dispense with the long cones usually employed for regulating the "lift"
and we substitute two short cones 5. 6 (see Fig. 1.) the strap forks 7 of which we
actuate from the ordinary rack 1 by a supplementary rack 8 and spur gearing 9. (see
detached plan view Fig. 6.)
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 :-
First. The arrangement of mechanism substantially as shown and described for
actuating the bobbin shaft consisting of a pulley fast on the driving shaft, guide
pulleys and m, adjustable lever or arm k tension spring r and the grooved pulley i
and endless band.
こ
Secondly. We claim the combination with the above, of the expanding pulley t
lever, link motion we, weighted bell crank lever a, incline (or the snail cam 3.)
substantially in the manner and for the purpose herein before set forth and described,
and illustrated by the drawings annexed.
Dated this 25th do 1000
CHARLES A. DAVIES,
4, St. Ann's Square, Manchester, Agent for the Applicants.