US397581A

US397581A - Ore-was

Info

Publication number: US397581A
Authority: US
Publication date: 1889-02-12
Anticipated expiration: 1906-02-12

Description

H. G. BLASDEL.

ORE WASHER.

N0. 397,581. Patented Feb. 12, 1889.v

1TB STATES FETCH.)

arnr ORE-WASH ER.

' SPECIFICATION forming part of Letters Patent No. 397,58L'dated February 12, 1889.

Application filed September 10, 1887. Serial No. 249,400. (No model.)

To all 217mm it may concern.- 4

.30 it known that HENRY (l. lhasmdlymf the city and county of San lfli'tllelsfit), State of alifiirnia, have invented an lmprovennmt in Ore-(1mcentrators; and I do l'u -reby de elare the following to be a full, clear, and exact description of the same.

My invention relates to that class of oreconeentrators in which an endless traveling belt mounted at an inclination is employed, and upon the surface of which the (ire-pulp and water are fed, whereby the lighter and wtjirthlcss particles of the ore are washed down the incline, while the heavier and precious particlessueh as sul ihurets and free goldare carried up by the belt, clinging to its surface, and are washed oft in a tankbelow; and my in vention consists in an endless traveling belt having its working-snrfaceformed ot' eorru gated or riltled portions alternating with plane or smooth portions, as 1 shall hertdnafter fully describe.

The object of my invention istoprovide for this class of concentrators a belt ca mble of doing more and. better work than the ordi nary snioothsurfaced belts, or a belt complctcl y corrugated or rit'tled.

Referring to the accompanying drawings for a more complete explanation of my invention, Figure 1. is a perspective view. Fig. 2 is a longitudinal section of the belt. Fig. 3 a plan of same.

In order to fully understand the application and operation of my belt, l have herein shown it in connection with the essential parts of the ordinary machines of this class, A l'ieing the main frame of the machine, and 1'3 the belt frame having the drivirig-roller b at the top and the guide-rollers b at the bottom, and C being the water and pulp distrilniting apparatus generally.

D is the endless belt which passes over the rollers 19 and b.

It is usual in this class of machines to use a plane-surfacetl belt, though in some instances belts having a completely corrugated or riflied surface have been attempted. In-

stead of using either of these classes of belts, I make my belt with a series of corrugated l or rit'tlcd portions, (7, and plane or smooth portions (1" intervening, these alternating l throughmit the entire working-s11rface of the belt. The eorrugationsor ritiics extend trans versely of the belt, and may be either de pressed or elevated, as desired, being in pracl lice, say, about one-sixteenth of an inch in l depth and width, each series or set of corru- 1 gations or ,riltlcs being about three inches 1 wide. The plane surface between. the series l of corrugations I'usually make about six inch es wide, these dimensions being only approximate, as I do not confine myself to them. By this construction of the surface of the belt j the material acquires a certain velocity of movement over the smooth or plane surfaces during which time the heavier precious parti eles and sulphurets have an opportunity to settle to a lower plane of the passing current, so that upon meeting with the corrugations they are more easily caught and in greater quantities, wherefore thebelt is more effective than if its whole surface were corrugated or riltled, or if the whole surface were smooth.

This belt can be made to run faster, and can also be set at a greater inclination than any smooth belt could possibly be.

Having thus described myinveution, what I claim as new, and desire to secure by illetters Patent, is

1. As a new article of manufacture, a belt the entire surface of which is divided into zones or strips of alternate corrugated or rifsubstantially as herein described.

2. In an ore-concent-rater, and in combination with the be]t-supporting frame and its drumsover-which the belt passes, and the water and pulp distrilniting apparatus, an endless traveling bclt having its entire workingsurt'ace divided into zones of alternate corrugated or rittled portions and plane or smooth portions, substantially as herein described.

In witness whereof I have hereunto set my hand.

HENRY G. BLASDEL.

Vitn esses:

S. H. NoURsE, H. 0. LEE.

tied portions and plane or smooth portions,