Improvements in and relating to Top Rolls for Machines for Preparing and Spinning Fibres.
Year: 1895

page_text: COMPLETE SPECIFICATION.
Improvements in and relating to Top Rolls for Machines for
Preparing and Spinning Fibres.
:1
1, ROBERT GILMORE CAMPBELL, of Salisbury in the County of Rowan, State"..
f North Carolina, in the United States of America, Artisan, do hereby declare
the nature of this invention and in what manner the same is to be performed to.
be particularly described and ascertained by the following statement:―
My present invention relates to machines used in the manufacture of sliver, roving
and yarn (of wool, silk, cotton, jute, hemp, flax, and other fibres) such as railway
heads, drawing frames, slubbers, speeders, fly frames, mules, jacks, and ring spinning
frames, has especial reference to the top roll used in these machines and consists in
certain features of construction which will be fully disclosed in the following
Specification and claims.
In the accompanying drawings which form part of this Specification ;-
Figure 1 represents a side elevation of my improved roll for ring spinning
frames.
Figure 2 a vertical longitudinal section and Figure 3 a like view of a modified
construction.
Top rolls used in manufacturing the fibres named are of two kinds, namely, shell
rolls and solid rolls; the former revolve on a small shaft that is known as a mantle,
the latter revolve on journals at their ends.
The great difficulty in managing top rolls that have integral journals, is, that the
lint of the material which is being operated upon accumulates on the ends of the
revolving journals of the rolls and forms wads which impede and at last stop
the motion of the rolls.
When the motion of a roll is impeded, a thin place is made in the roving
passing beneath it which spoils the yarn. When the top roll stops the roving
is broken, the leather covering of the top roll is worn or cut away by the steel
roll beneath it, and power is wasted in driving the machine.
In my improved roll a chamber is formed in each end of the roll extending from
the outer end of the journal inward and if desired the chamber may extend
throughout the length of the roll and its journals. The lint that forms the
wads on the ends of the common rolls works its way into the chambers of my
improved rolls, into which chambers the lint is pressed as it collects between the
ends of the roll and the end wall of the ordinary journal bearing used for the
support of this class of rolls; as the lint collects on the outer side of the wad,
the wad is pressed into the lint chambers, and continues to accumulate in the
chamber or chambers until the chamber or chambers are filled, so that the motion
of the rolls is not impeded for a much longer time as compared with the operation
of the common solid rolls in use.
When the roll is provided with a separate chamber at each end, it may be cleaned
by the use of a suitable hook, but when the chamber is continuous from end to ead
of the roll the accumulated lint may be blown out by the mouth of the operator or
pushed out by the use of a rod.
Reference being had to the drawings and the letters thereon; A indicates the
roll which in its external construction does not differ from rolls of this kind in
common use and is provided with the usual leather covering. At each end of the
roll is a liut chamber B, B, which may extend partly through the roll as shown in
Figure 2 or it may extend entirely through the roll from end to end as shown in

page_text: Figure 3. The entrance to the chambers or chamber is at the outer end of the
journals a, a, of the rolls and said eutrance is preferably made to flare outwardly
as shown at b, b, to guide the wads as they form on the ends of the journals into
the chambers B, B, where the lint continues to accumulate until the chambers have
become filled, which in practice I have found requires several months.
This accumulation of the lint in the roll has been demonstrated to relieve the
roll from being retarded by the accumulation of the wads upon the ends of the
journals of the rolls and consequently there are no uneven places in the sliver,
roving, or yarn, and the durability of the roll is greatly increased by being relieved
of the grinding action of the lower roll when the top roll has been stopped by
accumulated lint on the ends of the journals.
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
First. A. top roll for textile machines provided with open lint chambers in the
journals at each end of the roll.
Second. A top roll for textile machines provided with open lint chambers in the
journals at each end of the roll and said chambers having flaring ends.
Third. A top roll for textile machines provided with open lint chambers at each
end of the roll which extend throughout the length of the roll.
Dated this 17th day of September 1895.
WHEATLEY & MACKENZIE,
40 Chancery Lane, London, W.C., Agents.