IMPROVE- MENTS IN MACHINERY OR APPARATUS EMPLOYED IN DOUBLING COTTON OR OTHER FIBROUS SUBSTANCES
Year: 1882

page_text: PROVISIONAL SPECIFICATION left by the said Frederick James Smith at
the Office of the Commissioners of Patents on the 18th May 1882.
FREDERICK JAMES SMITH of Heywood in the County of Lancaster "IMPROVE-
MENTS IN MACHINERY OR APPARATUS EMPLOYED IN DOUBLING COTTON OR OTHER
FIBROUS SUBSTANCES
"
This invention relates to machines known as doubling frames, the object thereof
being to prevent the waste occasioned by "roller-laps," that is, the lapping of the
yarn round the rollers, whenever an end breaks; and the said invention consists
of an improved apparatus for raising each of the top rollers and holding it out of
action whenever its particular end or thread breaks.
Between the roller stand, which carries the top rollers, and the roller beam I
mount a rocking shaft running the entire length of the frame and actuated by an
excentric on the bottom roller shaft or by any other convenient means.
Upon this
shaft I fix a series of light arms or projections one to each end or thread.
Between the rollers and the thread board I arrange a series of eyes or twirls
through which the ends pass and which are held up by the tension thereof.
Each of these eyes is at the end of a small hinged piece connected to a sliding
frame or support so that when a thread breaks and its eye or twirl is released, the
hinged piece falls and comes into contact with one of the arms or projections on
the above named shaft, which arm (as the shaft rocks) lifts the hinged piece and
the sliding support; and as the top roller rests on this support it is lifted thereby
from the bottom roller and prevented from drawing off any more thread.
The rocking arm or projection has also a tendency to push back the hinged
piece and sliding support and the latter is provided with a projection or catch
which is caught and held up by a corresponding projection or ledge on the roller
stand and the top roller is thus kept out of contact with the bottom roller until
the thread has been "pieced up" and the attendant has released the sliding
support from the ledge.

page_text: SPECIFICATION in pursuance of the conditions of the Letters Patent filed
by the said Frederick James Smith in the Great Seal Patent Office on
the 13th October 1882.
FREDERICK JAMES SMITH of Heywood in the County of Lancaster.
"
'IMPROVE-
MENTS IN MACHINERY OR APPARATUS EMPLOYED IN DOUBLING COTTON AND OTHER
FIBROUS SUBSTANCES
"
This invention relates to machines known as "doubling frames," the object
thereof being to prevent the waste occasioned by "roller laps," that is the lapping
of the yarn round the rollers whenever an end breaks; and the said invention
consists of an improved apparatus for raising each of the top rollers and holding it
out of action whenever its particular end or thread breaks.
Such being the nature and object of my said invention I will now proceed to
describe in detail the manner in which the same is to be or may be performed or
carried into practical effect; and in order that the same may be clearly understood
I have annexed hereunto a sheet of drawings illustrative thereof, and have marked
the same with figures and letters of reference corresponding with those in the
following explanation thereof.
Fig. 1. in the annexed drawing is a transverse section of parts of an upright
doubling frame, showing the application of my invention thereto, the left hand half
from the central dotted line showing the driving gear, and the right hand half the
stop movement.
Fig. 2 is an enlarged section showing the stop motion in the position it
maintains when the yarn is entire and Fig. 3 shows its position when the thread
breaks.
Between the roller-stand a, a, which carries the top rollers b, b and the roller
beam c, c I mount a rocking shaft d, d running the entire length of the frame and
actuated by an excentric e, e on the bottom roller shaft f, f (or by any other
convenient means). Upon this shaft d, d I fix a series of light arms or pro-
jections g, g one to each end or thread.
Between the rollers b, b¹ and the thread-board h, h I arrange a series of eyes
or twirls i, i through which the ends pass, and which are held up by the tension
thereof.
Each of these eyes i, i is at the end of a small hinged piece k, k (see also face
view detached Fig. 4) connected to a sliding frame or support 1, 7 so that when a
thread breaks and its eye or twirl i, i is released the hinged piece k, k falls and
comes into contact with one of the arms or projections g g on the above named
shaft d, d, which arm as the shaft rocks lifts the hinged piece k, k and its sliding
support, ; and as the top roller b, b rests on this support it is lifted thereby
from the bottom roller 61, 6' and prevented from drawing off any more thread (see
Fig. 3)
The rocking arm or projection g, g has also a tendency to push back, the hinged
piece k, and sliding support l, and the latter is provided with a projection or
catch m m which is caught and held up by a corresponding projection or ledge n, n
on the roller stand a, a and the top roller b, bis thus kept out of contact with the
bottom-roller 6', 6' until the thread has been " pieced up" and the attendant has
released the sliding support l, 1 from the ledge n, n.
Having now described the nature and object of my said Invention and the
manner in which the same is to be or may be performed or carried into practical
effect I wish it to be understood that I claim as my Invention the construction,
and application to doubling frames of the apparatus herein before described and

page_text: 5
represented by the drawings annexed (or any mere modification thereof) for the
purpose of raising and holding any of the top rollers out of action whenever its
particular end or thread breaks so as to prevent the formation of "roller-laps'
substantially as hereinbefore described.
"
In witness whereof I the said Frederick James Smith have hereunto set
my hand and seal this ninth day of October in the year of our Lord one
thousand eight hundred and eighty two.
FREDERICK JAMES SMITH (L.S.)