Improvements in Machine Driving Belts and in Coverings for Dandy Rollers and the like.
Year: 1889

page_text: Date of Application, 23rd Apr., 1889
Specification Accepted, 25th May, 1889
Improvements in Machine Driving Belts and in Coverings for
Dandy Rollers and the like.
1, ALEXANDER MELVILLE CLARK, of the firm of A. M. and Wm. Clark, of 53,
Chancery Lane, in the County of Middlesex, Fellow of the Institute of Patent Agents,
do hereby declare the nature of this invention, (a communication to me from abroad
by William Charles Edge, of Newark, in the County of Essex, and State of New
Jersey, United States of America, Manufacturer,) and in what manner the same is
to be performed, to be particularly described and ascertained in and by the following
statement:-
The object of this invention is to furnish a substitute for the leather belts now
usually employed in the transmission of power in machinery and for the covers of
dandy rollers used in paper making and the like.
I have found that a belt made of knitted fabric is, in every way as a transmitting
medium, as useful as one made of leather it being at the same time less expensive to
produce and more durable than a leather belt.
This wire fabric I also use as an improved covering for dandy rollers.
The Invention consists of a knitted wire belt which, when used as a roller covering,
has its smooth or unribbed side turned out, all as more fully hereinafter described.
Reference is to be had to the accompanying drawing, forming part of this
specification, wherein figure 1 represents a sectional view of part of a belt of my
invention; Figure 2 is a face view, and figure 3 is a reverse view, of the same.
Figure 4 represents a side view of a dandy roller having my wire covering, and
figure 5 is a cross-section of the same.
In the drawing, the letter A represents the wire fabric of which the belt and dandy
roller covering is composed. This fabric is knitted on well known machinery, the
same as any stocking would be knitted. When used as a belting, this wire fabric A
is by preference applied with the unribbed side next to the pulleys because that is the
smooth side. Figure 2 is intended to represent the ribbed side, and figure 3 the
unribbed side, of this belting. But when the wire fabric is used for a dandy roller
formed on the inner side,
covering, as in figures 4 and 5, the ribbed part of the tube

page_text: the smooth part being on the outer side. Thus a continuous wire tube having its ribs
on the inner side, as at a, and its smooth surface on the outside is produced. The
knitted wire belting herein described can be used without but seams, lap seams being
fully as useful with this construction. In other words, a piece of fabric of proper
width and about the proper length is laid around the pulleys and the ends of the
fabric overlapped and then tied together by wire or string, thereby producing a
complete operative belt. In the drawing (figures 4 and 5) B represents the dandy
roller upon which the wire fabric A is placed. The ribs a of the fabric by being
turned inward on the dandy roller serve to support the fabric at a proper distance
from the body of the roller to give it its elasticity and nevertheless they do not
interfere with its continuity.
Experiments and practical tests have satisfied me that this wire knitted belt is very
durable and very strong and that a comparatively thin belt will do for work for which
very heavy leather was previously required.
Having now particularly described and ascertained the nature of the said
inventio and in what manner the same is to be performed, I declare that what
I claim is :-
1. As a new article of manufacture, a knitted wire driving belt and covering for
rollers, substantially as described.
2. As a new article of manufacture, the knitted wire belt for driving machinery,
substantially as herein shewn and described.
3. The seamless wire covering A for a dandy roller, the same being a seamless
knitted tube whose ribs are on the inner side and whose smooth surface is on the
outer side, substantially as described.
Datel th: 39 1 1. CA
+7 1004
A. MELVILLE CLARK.
By A. M. & Wm. Clark,
53, Chancery Lane, London,
Patent Agents.