Improvements in Drawing Rolls for Drawing and Spinning Frames: and the like.
Year: 1895

page_text: Date of Application, 26th Nov., 1895-Accepted, 11th Jan., 1896
COMPLETE SPECIFICATION.
Improvements in Drawing Rolls for Drawing and Spinning Frames:
and the like.
I, CHARLES EDWARD BROWNELL, of Moodus, in the Town of East
Haddam, County of Middlesex and State of Connecticut, United States of
America, Manufacturer, 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 :-
My invention relates to the fluted rollers which are employed in elongating the
slivers of cotton, or other fibrous material in drawing and spinning frames, in which
the fluted rollers are arranged in pairs and the sliver is compressed as it passes
between them and is drawn or elongated by driving the second pair of rolls faster
than the preceding pair and the object of my invention is to compress the sliver
between the engaging teeth of a pair of rolls which shall present opposing surfaces,
one of which shall be metallic and the other non-metallic.
In the following description reference is made to the figures in the accompanying
drawings, which show a pair of fluted rolls embodying my invention; the reference
letters marked thereon indicating like parts in the several figures.
Figure 1 represents a front view of a pair of fluted drawing rolls embodying my
invention.
Figure 2 is a sectional view, on line 2, 2, Figure 1 and
Figure 3 represents the upper or non-metallic roll removed from its bearings ;.
the central spindle being shown in full and the portions which are removable.
therefrom, being shown in central sectional view.
Referring to the accompanying drawings A, A, denote the fixed bearings in
which the rolls turn; B denotes the bottom metallic roll having its central section
fluted forming the teeth B1. The upper roll consists of a spindle C journalled in
the bearings A and carrying a series of disks D of non-metallic material, such, for
example, as vulcanized fibre and provided with teeth D1 corresponding with the
teeth B1 of the lower roll.
The spindle C is provided at one end with an annular groove or neck C1 to
receive a weighted saddle E and also with a shoulder C 2. The spindle C is screw
threaded at C3 to receive the screw threaded collar or nut F between which and
the shoulder C 2, the disks D.are securely clamped; each of the disks D having a
spline connection with the spindle C by means of a spline G by which the disks.
are held from rotation on the spindle. The spindle C is also provided with a.
sleeve H, which is attached to the spindle by a pin H1 and is provided with an
annular groove or neck H2 to receive the weighted saddle E 1.
The lower metallic roll B is rotated in the usual manner and the teeth D1 of
the upper roll are held in engagement with and rotated by the teeth B1 of the
roll B; the weight of the upper roll and the weight applied by the saddles E
and E1, causing the sliver to be compressed between the fluted sections of
the rolls.
Drawing rolls have been made in which the bottom roll was fluted and the upper
roll was provided with a plane surface resting upon the fluted section of the lower
roll; and drawing rolls have also been made having both the upper and lower rolls
made of metal and provided with fluted sections between which the sliver was
compressed, with the fluted sections held apart so the sliver would not be pinched
between the corners of the metallic teeth which would be liable to injure the fibres

page_text: of the aliver, and when the teeth of the fluted sections are held out of engagement
it becomes necessary to operatively connect the rolls together by independent
gearing and when the rolls are held apart it is impossible to vary the pressure
upon the sliver.
By my improvement in the drawing rolls, the fibres of the sliver are compressed
between opposing surfaces with a pressure varied according to the weight applied
to the upper roll, one of said surfaces being a metallic surface and the other a non-
metallic surface, I avoid all injury to the fibre of the sliver and am enabled to hold
the teeth of the upper roll in engagement with the teeth of the lower roll, so the
upper roll will be driven by the rotation of the lower roll through the engagement
of the teeth of the fluted section.
Having now particularly described and ascertained the nature of my inven-
tion and in what manner the same is to be performed, I declare that what I
claim is :
A pair of drawing rolls, one of said rolls B being a metallic roll having teeth B 1
forming a fluted section and the other of said rolls consisting of a spindle C and a
series of non-metallic disks, such as vulcanized fibre, held on said spindle and
provided with teeth D1 forming a fluted section with the non-metallic teeth D1
engaging the metallic teeth B 1 and adapted to compress the sliver between them,
and means for applying pressure to said rolls, substantially as described.
Dated this 4th day of November 1895.
CHARLES EDWARD BROWNELL.