Improvements in Belts for Ore-concentrating Machines.
Year: 1890

page_text: Date of Application, 17th July, 1890
Complete Specification Left, 2nd Dec., 1890-Accepted, 10th Jan., 1891
PROVISIONAL SPECIFICATION.
Improvements in Belts for Ore-concentrating Machines.
A communication from abroad by JAMES SAMUEL BROWNELL, of 132, Market Street,
San Francisco, in the State of California, United States of America, Engineer.
I, PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents, do hereby declare the nature of
this invention to be as follows :-
-
This invention relates to the class of ore concentrating machines which employ an
endless travelling belt or apron with raised flanges or edges along the side. Such
belts travel around drums and rollers so as to form a constantly moving bed or plane
on which the washing of ores is effected. In so passing around drums or rollers the
flanges of the belt are subject to a straining and if not made of very elastic material
they tend to crack in places and thus become of decreased utility as allowing the
water used on the belt surface to leak through such cracks.
To obviate this tendency I employ a flated or waving line or fullness of flange
which in passing around a roller simply straightens out somewhat and without
causing any undue tension or stretching of the material composing the flange, and in
this way the danger of cracking is avoided.
000
PHILIP M. JUSTICE.
COMPLETE SPECIFICATION.
Improvements in Belts for Ore-concentrating Machines.
A communication from abroad by JAMES SAMUEL BROWNELL, of-132, Market Street
San Francisco, in the State of California, United States of America, Engineer.
I PHILIP MIDDLETON JUSTICE of 55 and 56 Chancery Lane in the County of
Middlesex Fellow of the Institute of Patent Agents, 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 the class of ore concentrating machines which employ an
endless travelling belt or apron with raised flanges or edges along the side, such as
illustrated in the Specification to Letters Patent No. 4713 of 1883. Such belts travel
around drums and roliers so as to form a constantly moving bed or plane on which
the washing of ores is effected. In so passing around the drums and rollers the
flanges of the belt are subject to a straining action and if not made of very elastic
material they tend to crack in places and thus become of decreased utility as allowing
the water used on the belt surface to leak through such cracks.
To obviate this tendency a fluted or waving line or fullness of flange is employed
which in passing around a roller simply straightens out somewhat and without causing
any undue tension or stretching of the material composing the flange, and in this way
the danger of cracking is avoided.
A portion of a belt formed as above described is shewn in the accompanying
drawings in which Figure 1 is a plan view and Figure 2 a section on the line -a,
Figure 1.
A represents the body of the belt or apron and B B the waved or enlarged flange.
It is not necessary that the flange should be of the exact form shown in the drawing
as angular variations from a straight line would evidently answer the same purpose of
supplying a sufficient fullness of material at the top of the flange so as to allow for
the greater tension of the upper edge in passing around rollers.

page_text: Having now particularly described and ascertained the nature of my said invention
and in what manner the same is to be performed as communicated to me by my
foreign correspondent, I declare that what I claim is -
1. In a travelling belt or apron having raised edges or flanges the employment of a
greater length or fullness of material in the upper edge of the flange than in the
lower, substantially as described and for the purposes set forth.
.2. In a
travelling belt or apron the employment of a flange or edge having a
waving, scalloped, or channelled outline substantially as described and for the purposes
set forth.
3. In a travelling apron or belt the employment of a flange of greater total length
than the sides of the belt to which it is attached substantially as described and for the
purposes set forth.
'D
1
3
1
P D
1000
PHILIP M. JUSTICE.