VARIOUS IMPROVEMENTS IN AND ADDITIONS TO CERTAIN MACHINERY NOW IN USE FOR. DOUBLING AND TWISTING COTTON, SILK, AND OTHER FIBROUS SUBSTANCES
Year: 1823

page_text: GIMSON'S SPECIFICATION.
TO ALL TO WHOM THESE PRESENTS SHALL COME, I, THOMAS
FOSTER GIMSON, of Tiverton, in the County of Devon, Gentleman, send
greeting.
WHEREAS His most Excellent Majesty King George the Fourth, by His
Letters Patent under the Great Seal of Great Britain, bearing date at
Westminster, the Sixth day of November, in the fourth year of His reign,
did, for Himself, His heirs and successors, give and grant unto me, the said
Thomas Foster Gimson, His special licence that I, the said Thomas Foster
Gimson, my exors, adiñors, and assigns, or such others as I, the said Thomas
Foster Gimson, my exors, admors, or assigns, should at any time agree with,
and no others, from time to time and at all times during the term of years
therein specified, should and lawfully might make, use, exercise, and vend,
within England, Wales, and the Town of. Berwick-upon-Tweed, and also
within all His Majesty's Colonies and Plantations abroad, my Invention of
"VARIOUS IMPROVEMENTS IN AND ADDITIONS TO CERTAIN MACHINERY NOW IN USE FOR.
DOUBLING AND TWISTING COTTON, SILK, AND OTHER FIBROUS SUBSTANCES ;" in which
said Letters Patent there is contained a proviso obliging me, the said Thomas
Foster Gimson, by an instrument in writing under my hand and seal, parti-
cularly to describe and ascertain the nature of my said Invention, and in what.
manner the same is to be performed, and to cause the same to be enrolled in

page_text: His Majesty's High Court of Chancery within six calendar months next
and immediately after the date of the said recited Letters Patent, as in and
by the same, reference being thereunto had, will more fully and at large
appear.
NOW KNOW YE, that in compliance with the said proviso, I, the said
Thomas Foster Gimson, do hereby declare that the nature of my said Inven-
tion, and the manner in which the same is to be performed, are particularly
described and ascertained in and by the Drawing hereunto annexed, and the
following description thereof (that is to say):-
Fig. 1 is the front elevation of a machine for doubling and twisting cotton,
silk, &c. Fig. 2 an elevation of the right-hand end of the machine; and
Fig. 3 an elevation of the left-hand end of it. The same letters of reference
indicating the similar parts in all the Figures. A, A, &c. is the frame or
supports of the machine. B, in Figures 1 and 3, the rigger pulley or band
wheel, which receives its motion from the water wheel, steam engine, or other
first mover of the machinery, and communicates it to the drum C, C, which is
upon the same shaft with it. Upon the opposite end of this shaft is a pinion D,
which works into the toothed wheel E, turning upon a stud affixed in the
sliding carriage F, having a groove in it to receive the screw G with a screwed
nut, by means of which it is secured to the machine frame. To the wheel E
a pinion H is affixed, which acts in the toothed wheel I, turning upon a stud
affixed to the frame A. The wheel I works into another wheel J, of the same
diameter, and also into the pinions K and L, which are affixed upon the axes
of the bottom rollers M, M. Upon the opposite end of the axis of the roller K
is another pinion N, which works into the wheel O, turning upon a stud
affixed to the machine frame. This wheel O works into another toothed
wheel P, also turning upon a stud affixed in a sliding carriage Q, secured by
a screw and nut to the machine frame. To the wheel P a pinion R is affixed,
which works into the wheel S, upon the axis or shaft T, T, which passes along
the machine, as shewn in Figure 1, and carries upon it four excentric or heart
wheels U, one of which is shown in Figure 3, and the situations of them upon
the axis by the letters U, U, U, U, in Figure 1. Upon the peripheries of the
heart wheels U, U, &c. friction wheels or rollers, mounted in the adjusting
pieces V, V, affixed by screws upon the levers W, W, act. The levers W, W,
turn upon fulcrums in the bearers X, X, which are secured to the machine
frame, and have loops or links Y, Y, at the opposite ends of them, which are
connected with the short arms Z, Z, fixed upon the upright rods a, a, &c.,
which rods pass through guide holes made in the spindle rails b, b, of the
machine frame, and are affixed at their upper ends to the copping rails c, c,

page_text: and give them the upward and downward movements necessary for distributing
the twist upon the bobbins. The parts hitherto mentioned I do not claim as
my Inventions, they being already in use in the machines for doubling and
twisting cotton, silk, &c.
I shall now proceed to describe the improvements in and additions to those
machines for which I have taken out these said Letters Patent. d, d, is an addi-
tional frame affixed upon the machine frame A, A, which carries the upper
spindles, flyers, and bobbins e, e, &c., on which bobbins the untwisted silk or
loosely twisted thread, yarn, &c. is wound. The flyers may be affixed upon the
spindles and the bobbins loose, as usual, or the reverse, as inost convenient.
The spindles e, e, &c. turn in the steps f.f, and collars g, g, made in the
frame d, d, and have small whorls upon them for the bands by which they are
driven to act upon.
These bands surround the drum C, C, and receive
motion from it in common with the other or upright spindles of the
machine. As, however, the band is led in a peculiar manner over the four
spindles e, e, e, e, shewn in Figure 3, as well as in all the similar sets of
four spindles each throughout the machine, I shall proceed to shew
the manner of doing it by a reference to Figures 4 and 5; in which
Figures C is the drum; i, i, the band which passes upwards from the left
side of the drum, in the direction shewn by the arrows, over the two
whorls h, h, on the right side, and underneath and around the guide
roller j. It then passes over the two whorls h, h, on the left, and again pro-
ceeds to the drum C, C. The quantity of twist given to the doubled threads
is of course regulated by the sizes of the whorls upon the upright spindles ;
and the proportional speed given to the rollers M, M, and the twist given to
the single threads of the upper spindles, depends upon the sizes of the whorls
upon them. The threads are guided above, in the directions of the spindles,
over the cylindrical rods k, k, &c., between the rollers M, M, and thence
through the eyes 1, 7, to the flyers of the upright spindles. It is evident that
this process can only be applied to those yarns or threads which are either not
twisted at all, or to those which are only loosely twisted, and which require a
greater degree of twist to be given to them to fit them for being doubled,
trebled, &c., according to the purposes they are intended for.
In witness whereof, I, the said Thomas Foster Gimson, have hereunto
set my hand and seal, the Sixth day of May, in the year of our Lord
One thousand eight hundred and twenty-four.
THOMAS FOSTER (L.s.) GIMSON.

page_text: AND BE IT REMEMBERED, that on the Sixth day of May, in the year
of our Lord 1824, the aforesaid Thomas Foster Gimson came before our said
Lord the King in His Chancery, and acknowledged the Specification aforesaid,
and all and every thing therein contained and specified, in form above written.
And also the Specification aforesaid was stamped according to the tenor of the
Statute made for that purpose.
Inrolled the Sixth day of May, in the year of our Lord One thousand