Improvements in Top-rolls for Spinning Machines, Drawing Frames, Mules, and the like.
Year: 1899

page_text: Date of Application, 11th July, 1899 -Accepted, 12th Aug., 1899
COMPLETE SPECIFICATION.
Improvements in Top-rolls for Spinning Machines, Drawing Frames,
Mules, and the like.
We, LEON WILLIAM CAMPBELL, of Woonsocket, in the County of Providence,
State of Rhode Island, and MALCOLM CAMPBELL, of Beach Street, corner of
Lincoln Street, Boston, in the County of Suffolk, and State of Massachusetts,
both in United States of America, Gentlemen, do hereby declare the nature of
the 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 top-rolls for spinning machines, drawing frames,
mules, speeders, and other like machines, and it consists of certain features of
improvement as illustrated upon the accompanying drawings, now to be described
in detail, and finally pointed out with particularity in the claims.
Reference is to be had to the accompanying drawings, and to the letters and
figures marked thereon, the same letters designating the same parts or features,
as the case may be, wherever they occur.
Of the drawings,
Figure 1 represents in longitudinal section a top-roll embodying the present
invention.
Figure 2 represents a section on the line 2-2 of Figure 1.
Referring to the drawings,-
a represents the main arbor or bearing upon which the pressure of the holding-
down weights is applied through the usual saddles, it having an enlarged central
portion a¹ and reduced spindles a³ at the ends. On the inner end of each spindle
is placed a collar 6 having a frusto-conical ball track 6' and two separated
shoulders or flanges 62, the latter of which is of greater diameter than the
former 6. At the outer end of each spindle is threaded a similar oppositely
arranged collare having a conical ball track and two shoulders c¹². The collar c
is threaded on the extreme end of the spindle which projects but part way
therethrough, and in order to lock the collar against turning, after the collars
have been adjusted, a conically pointed screw is passed through its end and
bears against the end of the spindle. The sleeve d on which is placed the shell g
is counter-bored at each end to provide a cup or raceway for the balls f placed
between the sleeve and the tracks on the collars b and c. The ends of the sleeve
are counter-bored to such an extent that the collars extend into the ends thereof,
whereby the flanges c¹ fit snugly in the said ends and form dust-guards to
prevent dust and lint reaching the balls.
At its center, each sleeve is preferably grooved to receive an arched spring
wire f which has its end secured in an aperture in the sleeve. By reason of the
wire being arched it is eccentric of the shell so that by internally grooving the
shell 9, the wire slips into the groove thereof, and detachably holds the shell on
the sleeve, and owing to the end of the wire being held in an aperture in the
sleeve, the wire cannot rotate on the sleeve and wear the groove. Hence all wear
produced by the presence of the wire is confined to the groove in the shell which
is more readily and more cheaply replaced when worn than the sleeve. The

page_text: shell is covered with leather in the ordinary way, and it rotates freely with the
sleeve to which it is thus detachably secured.
The shoulders 632 of the collars fit snugly in the ends of the shell after it is
secured in place, so that an additional dust-guard is provided. By this means,
even though lint and dust should get by the first guard, it would not pass the
second one so as to interfere with the balls.
The spring catch furnishes a simple latch for connecting the shell and the
sleeve, and it will be seen that the sleeve may be readily detached by drawing
longitudinally upon it.
Having now particularly described and ascertained the nature of the said
invention, and in what manner the same is to be performed, we declare that what
we claim is:-
1. A top roll comprising a central bearing, a sleeve, anti-friction devices inter-
posed between the sleeve and the central bearing, a detachable shell adapted to be
secured to the sleeve, and a latch for connecting the sleeve to the shell, consisting
of an arched spring lying in a groove in one of the said last-mentioned parts
and adapted to spring into a groove in the other of said parts, said spring being
secured against rotation relatively to the sleeve.
2. A top-roll comprising a central bearing having a reduced non-rotary spindle,
oppositely arranged collars on said reduced spindle, the outer collar being screwed
on said spindle, a revoluble sleeve surrounding said spindle, and having ball
tracks in its ends, a shell on said sleeve and projecting at the ends beyond said
sleeve, balls between the shell and the collars, and a screw threaded into the outer
end of the said outer collar and bearing against the end of the said spindle.
3. In a top-roll, the combination with a non-rotary threaded spindle, of a
bearing collar threaded partially on said spindle, a screw threaded through said
collar and having its end abutting against the end of the spindle, a complemental
bearing co-acting with said collar, and a shell mounted on said bearing.
Dotad this Lith low of Iu 1900
LEON WILLIAM CAMPBELL.
MALCOLM CAMPBELL.
Haseltine, Lake & Co.,
45, Southampton Buildings, London, W.C.,
Agents for the Applicants.