US551448A

US551448A - Charles raleigh

Info

Publication number: US551448A
Authority: US
Publication date: 1895-12-17
Anticipated expiration: 1912-12-17

Description

(No Model.)

, G. RALEIGH.'

STAM? BATTERY.

No. 551,448. Patented Deo. 17, 1895.

Ik? j.

Wiz asses g fnv/en Zbr:

ffmdg. f y MMQWK UNITED STATES EEicE;9

PATENT CILXRIES RALEIGH, OF JGI'IANNESBURG, SOUTH AFRICAN REPUBLIC.

SPECIFICATION forming part of Letters Patent N o. 551,448, dated December 17', 1895.

Application filed Tune 25, 1892. Serial No. 438,051

(No model.) Patented in England February 19, 1892, No. 3,289; in

India April 5,1892, No. 88; in Victoria A pril 6, 1892, No. 9,558; in New South Wales April 8, 1892,1To. 3,693,I in Queensland Apri112,1892,No.2,048; in New Zealand April 22,1892,No. 5,522, andin Canada July 27, 1892,11'0, 39,471.

To @ZZ whom, it may concern,.-

Be it known that l, CHARLEs RALEIGH, a subject of the Queen of Great Britain and Ireland, residing' at Johannesburg, in the South African Republic, have invent-ed new and useful Improvements in or Applicable to Stamp-Batteries, (in respect whereof I have obtained Letters Patent in Great Britain, No. 8,289, dat-ed February 19, 1892; in India, No. 88, dated April 5, 1892; in Victoria, No. 9,558, dated April G, 1892; in New South lVales, N o. 3,693, dated April 8, 1892 in Queensland, No. 2,918, dated April 12, 1892; in N ew Zealand, No. 5,522, dated April 22, 1892, and in Canada, No. 89,471, dated July 27, 1892,) oi' which the following' is a specification.

This invention relates to stamp-batteries for crushing` gold ores and other substances; and it consists in certain improvements in the apparatus :for working the stamps.

In the accompanying drawings, Figure 1 is a front elevation of the upper part of a stampbattery constructed according to my invention. Fig, 2 is a side elevation of the canishaft and cams, Fig. being a side elevation of one of the cams.

Stamp-batteries or crushing-mills usually comprise a mortar-box containing a number of stamps, (frequently iive,) which are lifted, rotated and dropped by an equal number of cams, either single or double armed, keyed on a revolving cani-shaft, the stamps all rotatin3 in the saine direction. The ore or substance to be crushed is fed in at the back of the stamps, and, in the process of being' crushed, travels from the bacl; to the front of the niortar-box. On account of the stamps all rotating` in the same direction, the ore or other substance is driven toward one end of the mortarebox, its passage from the inlet to the outlet being thereby impeded. Owing to the same cause, the journals i'n which the stems work become worn unequally,'and the end 'thrust on the cam-shaft is in one direction only, instead of being alternatelyin each direction or counteract-ed.

ln order to insure the ore or other substance remaining` properly distributed in the mortar-box during the process of crushing, and to cause the wear to take place evenly on the various bearing-surfaces, I make the stamps rotate first in one direction and then in the other.

Two separate cams may be placed between cach pair of stamps; or a compound cam, (consisting` of two single-armed cams cast together side by side in one piece,) which, when mounted between two stamps, will cause the stamps to revolve iirst in one direction and then in the other, may be used` The stems 1, 2, 3, 4, and 5 pertaining tothe live stamps are each provided with one of the tappets A, B, C, D, and E. The tappets B, C, and D are each acted upon by compound cams having two arms, the tappets A and ll being' each acted upon by one arm of a double cam and by a single cam.

The action of the parts at each revolution of the cani-shaft F is as follows: The cani a, having imparted a rotary motion from left to right to the tappet A and raised it into the highest position, slides off that tappet and allows the first stamp to fall on the material in the mortar-box. The arm d of the compound cani d c', having acted in like manner on the tappetl), then releases the fourth stamp. The arm b of the cam b d then drops the second stamp, the arm e of the cani e df' the iifth stamp, and the arm c oi' the cani c h the third stamp. The arm a of the cani h c", having imparted a rotary motion from right to left t0 the tappet A of the first stamp, drops that stamp. The arm d' of the cam e d', having acted in like manner on the tappet l), then releases the fourth stamp; the arm b' of the cam c b", the second sta-nip; the cam e', the iiftli stamp, and the arin c' of the cam d c the third stamp. Thus the order of fall is 1 i 2 5 3, and each stamp is dropped twice and turned in both directions at every revolution of the canisliaft F. It will thus be seen that the cam c and the arms d, I), e, and c turn the stamps successively from left to right, the arms d', d', and Z1 the cani e', and the arm c' thereupon coming into operation and turning the stamps successively from right to left.

That I claim as my invention, and desire to secure by Letters Patent, is-- 1. In a stamp-battery or crushing mill, the combination, with a stamp-stem and a tappet mounted thereon, of a cam on one side the stein for engaging with the tappet so as to lift,

IOO

2. In a stamp-battery or crushing mill, the

eombination, with a series of stamp-sterns 1, 2, 3, 4, 5 provided With tappets A, B, C, D, E, of a earn a on one side the stern l for Aengaging with the tappet A Aso Vas to lift, turn from left to right and drop that stem, a Cain or arm a on the other side said stem for engaging with said tappet so as 'to lift, turn from right to left and drop the said stem, 'a Cain-or arni'b on one side the stern 2 vforengaging with the tappet B so as l'to lift, turn from left ltorig'htiand drop that stem, a @am orfarni b' on ythe vother side said Stem forengagging with said tappet so as to lift, turn from vright lto-left and drop the said stem, a ealn or arm c on oneside the stem'for en gaging with the `tappet 3@solas 'to lift, yturn-from left to right and 'drop that stem, 'a 'cam or arm c on the other sidesaid stem forengaging` With said tappet so 'as Ito lift, turn from rightto 'left and drop the'said ste1n,a LGain'or arnid on one Iside ythestern 4 for engaging with the tappet D so as -toflif-t, turn' from left to rightand drop that'stein, a @am orarm d on the other sidesaid'stein for engaging With said tappet so as to lift, turn 4'from right to left and drop Ithe said stem, a earn or arm e on'o'ne side the stem fffor 'engaging with the tappet E so as to lift, turn from left to right and drop that stem, and a earn e on the other side said stem for engaging with said tappet so as to lift7 turn from right to left and drop the said stein, whereby the more regular distribution in the mortar-box of the ore or suhstarnee to be crushed is attained and the Wear on the Various hearing surfaces more evenly divided, substantially as herein set forth.

3. In a'stainp-hattery or crushing mill, the combination, with a seriesof Vertieal'stainp stems l, 2, 3, 4, 5 provided with tappets A, B, C, D, E, 'of a horizontal cam-shaft F parallel With the row of stamp-stems and carrying a single @am a onjthe o'nterside of the stem 1, a double-Carafa bbe'tween the stems 1 and 2, a'douhleeani b fc bet-Ween the stems 2 and 3, a ld'on'hle @am c d 'between the stems 3 and 4, af'doublefeanilcl "e'fhetweenth'e stems 4C and 5, an' dlasingle'eam'eonth e'outer side ofthe stem 5, the cainsso `acting onthetappets that-'each stamp -is dropped ktwice land turned in both directions at every revolution vof lthe eamshaft, whereby'ithemore lregulardistribution in the mortar-box of 'the ore or suhstalnoeto he-o1f-nshed lis'atta-inedand 'the 'Wear 1on the Var-ions beari'ngrsuria'ees -inoreeven'ly divided substantially `as yherein set onth.

RALEIGH. Witnesses:

lRAiPsoN, P. VAnNAfL-s.