. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 727. ORE CAR ON A TRANS-FER TRUCK. The transfer truckhas an open platform through whichthe ore is dumped by dropping thef=^ bottom of the ore car, which is heldby chains and a windlass. 728. DRY PLACER GOLD SEPARATOR. Edison type. Therevolving roller, b, discharges th
. Mechanical appliances, mechanical movements and novelties of construction; a complete work and a continuation, as a second volume, of the author's book entitled "Mechanical movements, powers and devices" ... including an explanatory chapter on the leading conceptions of perpetual motion existing during the past three centuries. 727. ORE CAR ON A TRANS-FER TRUCK. The transfer truckhas an open platform through whichthe ore is dumped by dropping thef=^ bottom of the ore car, which is heldby chains and a windlass. 728. DRY PLACER GOLD SEPARATOR. Edison type. Therevolving roller, b, discharges the gravel from the hopper, a, upon the shelf, c, from which it falls intothe air blast created bythe centrifugal fan, d, dis-charging its air throughthe screens e and /. Theparting board, g, dividesthe heavier portion of thegravel—the gold and ironor black sand, whichfalls into the chute, h,from the lighter portionfalling into the tailingschute i. The lattice, k, k, is simply to prevent eddy currents of air goingdown the chutes h and i. The end of the air pipe at k is open. By a suitable adjustment of the speed of the fan, the position of theparting board, g, and the rate of feed of the gravel concentrates are ob-tained ; the screens are necessary for equalizing the velocity of the
Size: 1865px × 1339px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthorhiscoxgardnerdexter18, bookcentury1900, bookdecade1910
