Year: 1886

page_text: I, HENRY EDWARD NEWTON, of the Office for Patents, 6 Breams Buildings,
Chancery Lane in the County. of Middlesex, Civil Engineer 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 :--
This invention relates to improvements in pressure rollers, which rollers are
intended to press upon the warp while it is being wound upon its beam. It is of
well known importance that the warp should be wound upon its beam with utmost
regularity and tightness in the entire width of such beam."
Hitherto, a simple wooden or metal roller has been used supported by levers,
which roller runs loosely upon the warp during winding to exercise a certain
pressure. The warp beams are constructed with discs of large diameter at opposite
ends, and the pressure rollers have to be of such length that they will fit as tightly
as possible between such discs. On account, however, of the necessity of such roller
being supported at its ends, and as the distance between the discs of the warp beam,
in a series of warp beams, sometimes varies, there is a portion of the warp beam,
next to the above mentioned discs, upon which the due pressure of the pressure
roller is not exercised, and hence the warp, at these portions, is not wound up as
neatly as is necessary.
"
Now in order to remove this defect, the pressure roller is constructed with
extensible ends, and is so mounted, that each end will fit against the adjacent disc
of the warp beam, and will thereby exert its pressure against the entire width of
the warp beam, or of the warp winding upon such beam.
And in order to keep such roller with extensible ends in its proper place with
reference to the warp beam, two or more frames are arranged to partly surround
the expanding roller, each frame being provided with several antifriction rollers, so
that the pressure roller will rotate within the circle of antifriction rollers, and at
the same time bear against the warp beam.-The frames with the antifriction
rollers may be secured to one arm of a bell crank, elbow, or other bent rocking
D

page_text: lever, the other end of said lever, beyond the pivot, being provided with a counter-
weight, so as to press the pressure roller always against the warp beam on which
the warp, after being sized and dried, is to be wound.
In the accompanying drawing is shewn, at
Fig. 1, a side view of the frame of a sizing machine, with the invention applied
thereto.
C is the warp beam, against the surface of which, or more properly against the
thread of the warp wound thereon, the roller A presses.-This roller rotates within
a circle of antifriction rollers a mounted in a frame b carried by vibrating or
oscillating levers d, which, by means of a counterweight or weights (not shown)
keeps the roller A in close contact with the warp. The roller A is made with
extensible ends, as shewn in Fig. 2, which is partly a side view, and partly a
longitudinal section, of the roller.
The roller consists of a middle piece or body A, and two end pieces B B¹, the
construction of which will be readily understood from the Figure. These end
pieces are pressed outwards by spiral or other springs b¹ into contact with the inner
sides of the discs D D¹ of the warp beam c.-By thus constructing the pressure
roller, the latter will not only exercise its pressure against the warp upon the entire
width of the beam, but its length can be increased or diminished to suit (within
certain limits) a series of warp beams.
Having now particularly described and ascertained the nature of the said
Invention, and in what manner the same is to be performed, as communicated
to me by my Foreign Correspondents, I declare that what I claim is
1. An expanding pressure roller for warp beams constructed and arranged
substantially as shown and described, and for the purpose set forth.
2. The combination with a pressure roller for warp beams, provided with
extensible ends, of the means substantially as herein shown and described for
supporting or carrying said roller, or any mere modification thereof.
Thin 15th day of Tanun 1996