The weekly Arizona miner., 1881-07-22
The sweepstnzes Qaartz Aill.

We had an opportunity of examining, a
 few days since, the Sweepstakes quartz mill,
 which is in working order at the Oakland
 blaming mill, Oakland Point. Tie machine,
 which is the invention of A. F.. RedstOne, IS
 manufactured by the SweepstaGe Flow Co.
 The quartz mill carries the stamps Tn a re-
 volving frame or face-plate, fLngcd friction
 wheels furnishing guides to the stems. The
 bosses, shoes and dies are adjusted the same
 as in the ordinary battery, tlro dies being II three seglnents of a circle around an inside cone, in which the perpcndiculas shaft rests
 To this shaft is attached the revolving face
 plate and bevel wheel, on which the pIniun mesbes that IS keyed to the pulley shaf..
 The cams, upon which the rollers or wheels
 which raise the stamps are attached, are placed on the outside rim or curb. Upon the center being revolved, carrying the stamps they are carried up the horizontal cans by these rollers-each stamp having its own rolIer-and. gaining its highest point. are dropped. As they drop they strike an angular blow, or rather glancine one, then grinding on the quartz as they 
 by the next cam.
 The mill We inspecteil carries eight 125-lb s.amps. drops five inches with theacceierated force of the revolving movement of the speed at which the stamps are carried around. The whole mill weighs 2690 lbs, eight stamps and all. There are 48xl4 inches oi screen surface The mill requires colnpara- lively little power. and |; IS possible to run by hand. With one cam acting and running at IA revolutions, It strikes l.l52 blows a minute. We saw il at work with three cans in place. each of the eight stamps dropping t..-ee times a revolution, the mil thus striking :j.456 blows a minute, win l23-lb stalps dropping iive inches.
 The cams are easily removable, and cEe. two O.. three may be used, With one can only. each s:amP, after its dr P IS slid around the die the coupltte circle till it reaches the cam, grinding the quartz for the entire dis tance. Ii two are used, il drags half way, | lifts, strikes the blow and drsgs again. AL those stamps not in tine act of rising are c1inding or performing the work of mullcrs l in q ren. Both shoe and lie wear uniformly ! and smooth, 80 the iron can be worn down l to the last half inch, there being no ragged, | rough surface
 The owners of this Dew mill will have one | or more of them in practical operation during the Mechanics IastitnJs Fair, when miners | and mill men can examine thsm at work.
 The mill IS portable, and s made all ready ! f, attach to belt. Tks heaviest piece k | l25 ,bs. IL can bc run by Anisc TnScr, as i well as " steam. \ I.iiuer can pack. .one on | bIrrns. and .hen make the burros run H. | thus utilizing his. ..:aeans o: transportation as power.
 The No. prospecting mil weighs 71jits. :: No. :S. 2.650 Iis.: Nu. ., 7,UGO lis. No l is l calculated to crush 400 iis. an hour: No. ;, | 1000 ft.s per hour; and Ao. I, 4,000 its. Del ! hour, through No G0 scresn. No. car | ries seven 35-tb. st.uGYs, and strikes 100 | times d minute: No. B carries elgat l2J-lh | stamps and strikes ] l,GS0 tilucs minute, | No. carries sixteen 3DJ-tb. stamps, striking | 3, ,Sl0 times Der minute, grinding the distance | between the Iaclines. No. ], tIe prospecting | mill, Is sold complete for SS;iJ9; No. :. $7CU: | No i, 5000. Mr. Hill says that No. ! re quircs halI-horSe poweV--a burTo; No. ,, | Une-horse power; No. i, less than SIX horse power. All the mills have an extra set oi shoes and dies.
 The mill Is certainly compact and portable, and IS a s;rt of combined battery and pan. The grinding feature, for grinding ' rusty gold would be advantageous. For pros pectors use the NJ. mil IS the ishtest oi anything of the kind We have heard of, and the slight poser required to run II IS a great advantage We thought perhaps the grind ing action would use up good deal pt iron, Lu, Mr Redstonc and others who have useG the mli.., say that 1t IS not the caso, since the shoes and GIes Wear down smooth and even. and there is no breakage. This may be used, therefore, until entII,iy gone, which IS not the case with ordinary stamps Several oi these mills are now at work la lpines m thIs State. Mining and S,ientitic Press.