Improvements in Gig Mills.
Year: 1891

page_text: Date of Application, 19th Sept., 1891
Complete Specification Left, 19th July, 1892-Accepted, 20th Aug., 1892
PROVISIONAL SPECIFICATION.
Improvements in Gig Mills.
We,
THOMAS THORP, Engineer, of Carnwath Lodge, Ashley Road, Peel
Causeway near Manchester, in the County of Lancaster, and CHARLES WOOD,
Engineer, of 76 Bamford Street, Heaton Norris, in the said County, do hereby
declare the nature of this invention to be as follows:-
Our invention relates to those machines for raising or teasing woven fabrics in
which a cylinder carrying a number of small raising rollers is employed and the
objects of our improvements are to impart a positive but variable speed to the
raising rollers, also to vary the speed of the rollers which draw the fabric through
the machine and further to improve the means for grinding the clothing of the
raising rollers.
In carrying our invention into effect we drive the shaft of the main cylinder in
any convenient manner and in one arrangement we secure a bevil wheel on this
shaft which gears into a bevil wheel loose upon a fixed long stud or shaft; on this
stud are mounted several sets of bevil wheels forming sun and planet motions and
on the bosses of some of the bevil wheels are secured spur wheels and the latter
rotate at different speeds. Each of these spur wheels is in gear with a spur wheel
mounted loosely on a shaft provided with sliding clutch boxes fitted on a feather
key and so arranged that any one of the spur wheels which run at different speeds
can be made to drive the shaft on which is a bevil wheel which transmits motion
to another wheel on the boss of which is secured a chain wheel which by means of
a chain gives motion to a chain wheel mounted loosely on the shaft of the main
cylinder a similar chain wheel on the opposite side of the cylinder is driven in any
convenient manner from the shaft which has the variable speed imparted to it.
To each chain wheel is fixed say two brackets which carry studs that come
against studs secured to split rings for driving the raising rollers.
The raising rollers carry a pulley at each end preferably covered with leather
and these pulleys are in contact with the inner surfaces of the split rings which
are lined with raw hide and impart motion to the raising rollers by friction when
the split rings are driven by the studs on the chain wheels. To vary the speed of
the cloth drawing roller or rollers we mount a friction disc on the main cylinder
shaft or otherwise which drives a friction disc on shaft from which motion is
communicated to the cloth roller or rollers in any convenient manner and at the
most suitable speed.
To grind the raising rollers we mount a grinding roller in adjustable bearings on
the machine frame and drive the same preferably from a pulley on the cylinder
shaft, the cylinder and rollers are set in motion as if for raising fabric and the
grinding roller when in motion is set and adjusted to grind the clothing of the
raising rollers after which it can be readily removed.
We employ what is known as metalline bearings for the raising rollers and thus
dispense with the necessity of oil for lubrication.
Dated this 18th day of September 1891.
H. B. BARLOW,
Agent for Applicants.

page_text: Improvements in Gig Mills.
We, THOMAS THORP, Engineer, of Carnwath Lodge, Ashley Road, Peel
Causeway, near Manchester, in the County of Lancaster, and CHARLES WOOD,
Engineer, of 76 Bamford Street, Heaton Norris, in the said County, 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:-
Our invention relates to those machines for raising or teasing woven fabrics in
which a cylinder carrying a number of small raising rollers is employed and in
which a variable but known motion independent of that of the raising. cylinder
itself is imparted to the raising rollers, and our invention consists of improved
means for imparting this motion, for varying the speed of the rollers which draw
the fabric through the machine, and for grinding the clothing of the raising rollers.,
And in order that our invention may be fully understood and readily carried into
effect we will describe the accompanying two sheets of drawings reference being
had to the figures and letters marked thereon.
Figure 1 is a side elevation of a gig mill to which our improvements have been
applied and
Fig. 2 is a plan of the gearing and certain other parts of the same.
The main or cylinder shaft a has mounted and fixed upon it the two drum
heads, which carry the series of small card or raising rollers c. Also mounted on
the shaft a and running loosely thereon are the two chain gears d d' which receive
their motion by chains e e¹ from a pair of chain gears fffixed on a shaft g. On
the shaft a outside the framework at one end are placed a pair of fast and loose
pulleys a¹ all by means of which the said shaft is driven, and on the other end of
the shaft a is fixed a friction disc and bevel gear the latter gearing into a
bevel gear, i fixed, on a sleeve mounted loosely upon a long stud or shaft j. On the
boss of the gear i is fixed a spur wheel and on the above mentioned sleeve is
mounted loosely a mitre wheel which is held from revolving in a bracket ri
gearing into. the mitre wheel is a mitre wheel m mounted loosely on a stud n fixed
in the sleeve and gearing into a mitre wheel o formed with or secured to a, spur
wheel which is fixed upon a second sleeve mounted loosely upon the stud or
shaft, On the second sleeve is mounted loosely a mitre wheel, held from
revolving in the bracket r, and gearing with a mitre wheel m' which drives, a
mitre wheel of fixed by a stud n¹ on a third sleeve on which is also. fixed a third
spur wheel. The mitre wheels 12 m² o² and the spur wheel are similarly
mounted and arranged.
"
From the foregoing description it will be readily understood that each nest of
gears forming a sun and planet motion will double the speed of the preceding nest,
that is to say, the gear k will have twice the revolutions of the gear k, the gear k²
four times and the gear eight times the number of revolutions of the gear k.
Below the stud which carries the multiple gearing is, a, shaft p. upon which are
mounted a series of clutch gears 9, 9', 7, 9', gearing respectively, with the four
speed gears k, k', h, k, the four clutch gears are actuated by a pair of clutch
levers which are pivoted on the bracket r, and consequently the shaft p is
driven at either of the four speeds desired by simply throwing the corresponding
clutch gear q, q, q², or g', into gear with its, speed gear k, k¹, k², or k³ as required.
On the shaft P is fixed a bevel wheel p' which gears into a bevel wheel g¹ fixed on
the shaft g and the motion given to the shaft g by either of the four speed gears k
as above described is transmitted to the chain wheels d d' ou the cylinder shaft a
by the chains e e' from the chain wheels f'.
We have shown and described an arrangement of sun and planet gearing for

page_text: driving the raising rollers at four different speeds; but we wish it to be under-
stood that we do not limit ourselves to four speeds only as we may employ
more or fewer nests of gearing to impart a greater or less number of speeds as
may be required. Again we have specified an arrangement of sliding clutch
gears for taking the motion from the sun and planet gears but we may employ
any other convenient and suitable arrangement of mechanism for the same
purpose.
To each chain wheel dis fixel a bracket d' (or it may be more than one
such bracket if required) which carries a stud t on which is fixed a split ring u
lined with raw hide. These hide lined split rings u encircle a series of leather
covered pulleys v fixed upon the ends of the raising rollers c; or the split rings u
may be. lined with leather and the pulleys v covered with raw hide if preferred.
The pulleys are preferably alternately flanged and without flanges so as to guide
the hide lined rings u. The cloth wis taken from the fold and guided in the
direction indicated by arrows Fig. 1, over rails and rollers to the cylinder where
it is raised or teasled by the series of raising rollers c. The rollers are preferably
made hollow to permit their being heated by steam, air or gas if required, and are
driven by chains y and chain wheels from the friction disc h fixed on the cylinder
shaft a, motion being taken from the disc h by a friction roller which is mounted
on a feather key on a shaft 2 and is adjustable by means of a screw 3 and hand
On the shaft 2 is fixed a bevel wheel 5 which gears into a bevel wheel 6
fixed on one of the hollow cloth rollers z.
wheel 4.
It will thus be evident that by varying the position of the friction roller z
relatively to the centre of the friction disc h. the speed at which the cloth is drawn
over and from the raising cylinder can be regulated as required.
To grind the raising rollers we mount a card clothed grinding roller in bearings
adjustable by means of hand screws 8 on the machine frame and drive the grinding
roller in the same direction as that in which the raising rollers are rotated
preferably from a pulley on the cylinder shaft or otherwise as convenient, the
card teeth on the grinding roller and on the raising rollers being set in the same
direction; the cylinder and raising rollers c are set in motion as if for raising fabric
and the grinding roller 7 when in motion is set and adjusted to grind the clothing
of the raising rollers c after which it can be readily withdrawn by turning the hand
screws 8.
We prefer to employ what are known as metalline bearings for the raising
rollers thereby dispensing with the necessity of using oil for lubrication.
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 :-
In a gig mill :--
1. The arrangement use and application of a series of nests of sun and planet
speeding gears for varying the speed transmitted from the main or cylinder shaft to
the series of raising rollers, each of said nests of gears consisting of a stationary or
sun gear, a revolving or planet gear, and a third or recipient gear all combined
arranged and operating substantially in the manner and for the purposes herein set
forth.
2. The combination with a countershaft driven from the main or cylinder shaft
at the varying speeds required, of chain wheels fixed on said counter shaft and
driving by chains a pair of chain wheels which are mounted loosely on the cylinder
shaft and drive the series of raising rollers by means of hide lined split rings
encircling leather covered pulleys on said raising rollers all substantially as herein
set forth.
3. The arrangement use and application of a card clothed grinding roller which
has its teeth set in the same direction as the teeth on the series of card clothed
raising rollers of which the raising cylinder is composed, said grinding roller being
mounted so as to be capable of adjustment to or from the raising rollers and being

page_text: driven when in operation in the same direction as that in which each raising roller
is rotated substantially as herein set forth.
4. The combination with the cloth guide rollers which may or may not be heated,
of adjustable frictional driving gear for driving the guide rollers at varying speeds
and so regulating the travel of the cloth as required substantially as herein set
forth.
5. The general combination and arrangement of parts embodying our improve-
ments substantially as and for the purposes herein set forth.
Dated this 18th day of July 1892.
H. B. BARLOW,.
17, St. Ann's Square, Manchester, Agent for Applicants.