IMPROVEMENTS IN TWISTING AND DOUBLING SILK AND IN FRAMES EMPLOYED THEREIN
Year: 1863

page_text: PROVISIONAL SPECIFICATION left by Richard Archibald Brooman at
the Office of the Commissioners of Patents, with his Petition, on the
27th April 1863.-A communication from abroad by Auguste Tastevin,
of Lyons, France.
I, RICHARD ARCHIBALD BROOMAN, of 166, Fleet Steet, in the City of
London, Patent Agent, do hereby declare the nature of the said Invention
for "IMPROVEMENTS IN TWISTING AND DOUBLING SILK AND IN FRAMES EMPLOYED
THEREIN," to be as follows:-
In the working of silk after having been spun, and prior to the use to which
it is destined, it has to undergo divers operations according to such use, and it
assumes a different shape according to whether it undergoes two, three, or a
greater number of manipulations. Thus the silk fibres with one single thread
are subjected to winding and to torsion upon two distinct frames. Silk warps
with two threads require winding, doubling, and twisting, consequently three
frames. Every manipulation has necessitated a separate frame. Now to
overcome these many separate frames or machines the Inventor has devised a
method of effecting the most simple preparation of silk upon one frame and at
one operation, and the most complicated preparations upon one frame at one
time, the winding not being included, that is to say, that the first torsion, the
second torsion, and the doubling, are simultaneously effected by one single
operation.
A frame fitted according to this Invention unites and combines in one
single operation three operations which heretofore necessitated as many frames.
With the exception of the winding I perform upon the same frame and at tho

page_text: same time the 1st and 2nd torsion as well as the doubling, when these two
torsions are necessary I proceed as follows:-Suppose there are two ordinary
bobbins charged with silk and placed upon two ordinary spindles, impart
motion to these spindles, torsion of the threads results, this is the first torsion.
If afterwards these threads separated from each other unite in an eye, as the
torsion takes place, doubling results. If these two threads united aro taken
hold of on leaving the eye by a bobbin moved by a spindle the second torsion
is obtained. It will be remarked that in the second torsion the bobbin winds
on the thread as fast as it is twisted, while in the first torsion on the contrary
the bobbins give off the thread. My frame is composed of bars supporting
spindles free to revolve and to carry with them the bobbins placed thereon.
The bobbins are arranged in pairs with a central gathering reel between every
pair of bobbins, and the same frame carries as many sets of bobbins and reels
as there is space for. Full bobbins are placed on their spindles, the threads
from them are carried upwards, then through guides, and the bobbins being
made to revolve through belts driving the spindles, the threads get the first
twist or torsion, they are then brought together in an eye, are thus doubled,
pass round a distributing roller, and are carried down to the central reel, which
being made to revolve gives the second twist to the thread and the thread is
wound upon the reel. By means of a second and hollow spindle through
which the spindle on which the reel is fitted passes up and down motion is
imparted to a flier to lay the thread evenly on the reel.
The hollow spindles
made to ascend and
of all the reels are supported upon a beam which is
descend by means of a cam groovo on or in a drum, into which groove a stud
or bolt on the beam is made to enter, the periphery of the drum is armed with
a toothed wheel, and by means of bevilled toothed wheels, a shaft and crank
handle, the drum is turned to obtain the up-and-down motion of the beam as
required. The bobbin and reel spindles are driven in contrary directions by
an endless belt made to travel in and out between the spindles, that is on the
front of the bobbin spindles and on the back of the reel spindles, or vice versa.