US 780145 A
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PATEN'PED JAN. 17, 1.905;
L. K, VAUGHAN. BELT CONVEYER.
APBLIOATION FILED AUG. 18. 1904.
"and sands comes directly on the belt, it is only lharirnn marine Patented January it "7, '1 905.
LOUlS lit. VAUGHAN, (ll? ()ROVHJLE, CALlllFORNlA.
new eenvia ven,
SPEGIFIUATION forming part of Letters Patent-No. venue-5, dated January 1'7, 1905.
Application lilell August 18, 19042, Serial No. 221,225.
To (t/fi Ie/wm, it may concern.-
Be it known that l, Louis hi. VAUGHAN, a citizen of the United States, residing at Uroville, in the county of Butte and State of (.lalis fornia, haveinventml new and useful lmprovel ments in Belt Conveyers, of which the followl inn; is aspeeilieation. V
My invention relates to improvements in belt eonveyers For handlingcoal, sand, gravel, and likecoarse heavy granular matter, and pertains especially to tailings-staekcrs for goldalredgers.
The object of the invention is to prevent the disastrous wear that now occurs with belt carriers of the above type, and thereby save or lessen to a great degree the expense of frequent renewal of the belts.
The invention consists of the parts and the constrlu-tion and combination of parts, as hereinafter more l'ullydeserilml and claimed, having reference to the accompanyingdrawings, in \vhieh--- Figure 1 is a side elevation of an apparatus, showing application of my invention. Fig. 2 is a plan view of the same. l ig'. 3 is a sec- 1 tion on line 1 1 of Fig, l on a larger scale. Fig. 4 is a section through conveyor and pad, showing latter with both sides adapted as wearing-surtacefi.
A represents the Frame or boom oi an ordinary tailings stacker having the usual troughed eonveyer-lwlt 2, supported at the ends on drums 3 and intermediately on the troue'hing-rollers l, which latter give. the belt its trough or ereseent shape. These belts being usually of rubber and of considerable length and breadth are very expensive. 'here all the wearfrom the imaunbent gravel a few months belore the belt is worn out and has to be discarded. This wear, of course, comes principally in the middle or bottom of the belt-trough, and no sooner does a hole appear in the belt than the entire belt is rendered useless and has to be replaced by a new one, although the sides oi the belt show little or no wear. l have discovered that if a second belt 5 is employed and, made to inclose the lirst belt, with the upper plane of the see- 0nd belt resting" centrally on andlying paral lel with the upper plane ol the first belt, and the two belts driven in unison practically the whole wear t'rom the rocks, sand, and gravel will be taken by this second belt, which latter constitutes,- in fact, an endless shoe or wearingani. tiinee this shoe 1n" wearingpad need not be of first-quality material nor wider than snllicient to support the bulk ol the load on the traction-belt 52, it is possible to use'belbseraps of all sorts of the proper '60 width and also to use the lateral unworn per-- Still tions of a east-ell main belt, like belt 2.
Then one of these shoes is worn out, a new one can be put on at small expense cohipared, with the cost of the single broad belt now solelydepended on. If desired, this protective belt may be heavily coated with rubber on both sides, so that when one side has become worn to a considerable extent thebelt may be turned over and made to last twice as long. l-leinp; only half as wide as the main belt 2 or wide enough sullieient only to support the load, (the sides of belt 2 being subjeetto very little wear need no proteetion,)tl1e cost ol a protective belt even ol this eharaeter is far less than the broad main belt 2. This protective belt 5 lies generally eontigte ous to the upper and lower planes oi belt .1, both belts passing together around one of the drums 23 and being supported along their lower planes of travel on rollers ii. The opposite end of belt 5, however, is imlependently supported on adrum I, mounted one shall; 8, which is journaled in boxes adjustable longitudinally oi the frame A to maintain the ten- 5.
sion of belt 5 and keep it central of belt 2. Power may be applied to either of drums 3 to operate both belts in unison. This protective belt or shoe may be applied to all endless-belt carriers for handling coal, sand, gravel, or other heavy gritty matter. It will not only take the major part of the wear and tear, but the two bells will give a still'ened support for the load travelingjover the rollers, and so prevent sagging or bagging of the conveyor between the rollers, thereby reducin, 't'rietion and wear and requiring less power to move a given load.
, prising an veyers comprising a second belt inclosing and lying centrally of and traveling with the main belt, said protective belt having both sides adapted as \vearingsurfaces.
4. A protective shoe for endless-belt conveyers comprising a second belt inclosing and lying centrally of and traveling with the main belt, said protective belt of lesser width than the main belt.
5. A protective shoe for endless-belt conveyers comprising a second beltinclosing and lying centrally of and traveling with the main belt, said protective belt of lesser width than the main belt and having both sides adapted as wearing-surfaces.
6. The combination with a suitable support, of a series of three parallel drums journaled therein upon independent axes, an endless conveyer-belt passing around one of said drums at the end of the series and around the intermediate drum, and a second belt, independent of the first belt, passing around both outer drums and lying centrally on and movable in unison, and parallel with the firstnained belt.
7. The combination with a suitable support, of a series of tlllti: parallel drums jourl i l l l 'naled the-1 reams ing around o the series and and a second drums and l centrally on and movable in unison, an? -rail with the first-tanned belt,
t s said second belt l the first belt. v
8. The cmnbinatien with suitable supporting means of an endless traction-belt, and a protective shoe for said traction-belt coin endless belt-of less width than the traction-be and inc-losing the latter and arranged ce al thereof and parallel therewith i A tailings-staclcer comprising a frame.
eing of lesser width than an endless trougned belt 'supported thereon,
and a second endless belt lnclosing and extending beyond, and travelingin unison with the fir t. said second belt being d sposed 31: trall ol' the first belt and having a wear: surface on both sides adapting it tobe turned over and u: all.
10. All endless'belt conveyor having a s parate and readil v-re1novable central protective shoe or wearingqiad on its supporting-su2*- face. 7
11. An endless-beltconveyor having a s parate and readily-reniovable central protect" ive shoe or wearing-pad on its supportingsurt'ace, said pad of lesser width than the conveyer.
in testimony whereof I have hereunto set my hand in presence of two subscribing witnesses.