IMPROVEMENTS IN DOUBLING FRAMES
Year: 1885

page_text: I, SUTCLIFFE CRABTREE of Nook Lodge, Cullingworth, near Bradford, in the
County of York, Overlooker do hereby declare the nature of my invention for
IMPROVEMENTS IN DOUBLING FRAMES to be as follows:-
This invention is particularly applicable to frames employed for redoubling
Brussels, and tapestry yarns, and relates to an improved stop motion, by which
means on the breakage of any single yarn, the roller spindle, and the flyer spindle,
connected therewith are instantaneously stopped, and the means employed for
driving the roller spindles also enables the twist of the yarn to be accurately
regulated.
To carry out my invention I employ in connection with each spindle, a series of
drop guides, fitted in suitable vertical guides, and equal in number to the yarns
being doubled, and one of such drop guides is hooked over and suspended by each
yarn, thus on the breakage of a yarn the drop guide suspended thereby, drops on to
and presses down the T shaped end of a lever, the other end of which lever passes
under the roller connected with the broken yarn, and being raised comes in contact
with a projecting pin on the roller spindle, thereby stopping it and at the same
time stopping the flyer spindle, as the roller spindle is driven by means of wheel
gearing from the flyer spindle and the relative size of the wheel on the flyer
spindle to the wheel on the roller spindle regulates the twist given to the doubled
yarns, or the same effect may be produced by employing, a roller of a different
diameter on the roller spindle.
When using heavy drop guides it may be necessary to employ an arrangement
for increasing the tension of the yarn.
For some purposes I may employ instead of the herein beforementioned lever
with a T shaped end, a wheel, revolving horizontally and driven by means of a
toothed wheel on the roller spindle, such driven wheel passing under the drop
guides and being formed with notches or projections to catch the drop guides, when
they drop, is instantaneously stopped on the breakage of a yarn thereby stopping
the roller and flyer spindles.
יתנות
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page_text: Improvements in Doubling Frames.
I SUTCLIFFE CRABTREE, of No 12 Gladstone Place Holycroft, Keighley, in the
County of York, Overlooker, do hereby declare the nature of my invention for
IMPROVEMENTS IN DOUBLING FRAMES and in what manner the same is to be
performed, to be particularly described and ascertained in and by the following
statement :-
This invention is particularly applicable to frames employed for redoubling
Brussels, tapestry and mottled yarns; and it consists of an improved stop motion,
by which means when any single yarn breaks, the roller spindle and flyer spindle
connected therewith are simultaneously stopped. The invention further consists
in driving the roller spindle from the flyer spindle by toothed gearing, thus
enabling the yarn to be very evenly twisted and to be accurately regulated.
To carry out my invention I employ in connection with each spindle a series of
drop guides, fitted in suitable guides, and equal in number to the yarns being
doubled. One of such drop guides is booked over and suspended by each yarn,
thus when a yarn breaks the drop guide suspended thereby drops onto and presses
down the T shaped end of a lever. The other end of the lever extends under the
roller connected with the broken yarn, and being raised comes in contact with a
projecting pin on the roller spindle, thereby stopping it, and also at the same
time stopping the flyer spindle as the roller is driven by gearing from the flyer
spindle.
The relative size of the cog wheel on the flyer spindle to the cog wheel on on
the roller spindle, regulates the relative speed of the roller spindle and the flyer
spindle, and therefore determines the amount of twist given to the yarn. The
amount of twist may be further regulated by substituting for the roller on the
roller spindle a roller having a larger or smaller diameter.
Reference is to be had to the accompanying drawings forming part of this
specification in which similar letters of reference indicate corresponding parts in
all the figures.
Figure 1 represents a transverse sectional elevation of such portions of a
doubling frame as are necessary to explain our invention. Figure 2 is a front
elevation of the same.
•
The flyer spindle A is driven from the pulley B on the driving shaft C and the
roller spindle D is geared thereto by the wheels E and F, the relative size of which
regulates the relative speed of the roller spindle and the flyer spindle, and thus
regulates the amount of twist given to the yarn.
The square drop guides H fit in 'square holes formed in the guide plates J running
along the top of the frame, one of such drop guides being hooked over and
suspended by each of the yarns being doubled. A delicately balanced horizontal
lever K is placed immediately behind each of the roller spindles D which lever is
mounted on a bracket L secured to the top of the frame, and the other end is formed
in the shape of a T extending to, and branching out under all the drop guides H
connected with the roller spindle D which it is designed to stop.

page_text: The normal position of the lever K is that represented in Figure 1 but when
any one of the yarns being doubled breaks, the drop guides H suspended thereby
drop on to the T shaped end P of the lever K, thus depressing it and causing the
other end of such lever to rise up and assume the position shown by the broken
lines; the other end of the lever when in this position.comes in contact with the
pin M projecting from the roller spindle D, underneath the roller N, which is
immediately stopped, and the flyer spindle A being connected thereto by the cog
wheels E and F is simultaneously stopped.
Having now particularly described and ascertained the nature of my said
invention and in what manner the same is to be performed, I declare what
I claim is
(1.) In doubling frames, driving the roller spindle by change wheel gear from
the flyer spindle substantially as herein shown and described and for the purpose
specified.
(2.) In doubling frames, the stop motion consisting in the arrangement of drop
guides and T lever, in combination with the flyer spindie, and roller spindle,
geared together, substantially as herein shown and described, and for the purpose
specified.