The copper era., 1905-06-01
NEW MINE HOIST
BOON TO MINERS.
Latest Invention EmbOdies Many New
 Ideas.

The writer recently had the pleas ure of inspecting one of the gasoline hoists turned out by the Llewellyn Iron Works for the Duryea-White Machinery Co. of Los Angeles, Cal, and was surprised to note the many novel and important improvements over the other hoists on the market.
 The hoisting drum is mounted on an extension of the crank. shaft alongside the engine. This shaft is supported at it's outer end by cast pedestal bolted to the base of the hoist. The latter is cast in one piece with the engine bed so that there is no possibility of the bearings getting out of line.
 The driving gears are plain spur rim of the hOisting drum and run ming in grease, reducing the friction and noise to minimum. These gears are arranged so that there is no thrust on the drum or driving shaft. The lubricant need not be renewed oftener than every three months.
 A feature that will be appreciated by all who have had the experience with hosts is the absence of all fric- tion clutches.
 Instead of clutch the new hoist has a wood faced band brake, with about three times the gripping power of the ordinary friction clutch, and any slippage due to overload or wear can be taken up instantly by simply pulling the operating lever down an- other notch. The hoisting drum has the usual band brake on it's rim, and both gear and brake on it's rim, and both gear and brake levers are placed so that the engineer is facing the shaft at all times.
 The most noticeable thing about the engine is the quietness and smoothness with which it runs, there being almost no noise and no per ceptible vibration.
 All the working parts such as cans, cranks, etc. run in an oil bath, and are enclosed in dust proof covers, that can be easily and quickly re- moved for inspection, or adjustment, or adjustment of bearings.
 The engine is started with com pressed air by simply moving a small lever on the cam shaft and opening an air valve. It then starts off as smoothly as d steam engine, and after making few revolutions the lever is thrown back and the engine operates in the usual manner. When stopping the engine the cylinder is converted temporarily into an air pump, and the momentum of the fly wheels furnish power to pump enough air into a receiver to start the en- zine again. This simple method of operation is a striking contrast to the complicated system of air pumps, valves, match starters, and other makeshift devices found on some machines.
 The ignition device is of the ham, mer break type, the insulated cleo trode is of steel with large platinum contacts and mica insulation. This electrode can be removed for ex- animation or cleaning by unscrewing one nuts3 as the Insulation -is- is -s2et> -aet
 I'd, and no packing is used, 'rhe &ectrode can be easily replaced.
 The electrical current is produced in way that is new, novel and prac- tical, as it does away with the com- plication of batteries, spark coils, wires, switches and hot tube devices, that have been such a prolific source of trouble on other engines.
 The current is generated by rock ing magneto moved by the same rod which operates the sparkling device, this magneto is enclosed and weather proof. Only one wire is used, lead ing directly from the magneto to the insulated electrode, no spark coil be- ing necessary. The other pole of the magneto is grounded on the engine. There are no brushes or other small, delicate parts to wear or need ad- less than half a revolution for each spark. it should outwear the engine.
 The cylinders are fully water jack eted with large openings in each end so that any deposit of lime or alkai left by the circulating water can be easily scraped out, feature that is overlooked by many manufacturers. No gaskets are used, all openings in- to the cylinder being ground joints.
 The governor is of the centrifugal hit or miss type, with milled thumb nut controlling the speed, so that the latter can be changed, while the en- zine is running.
 Epel is fed by a float feed car bureftor of an improved automobile type, and either gasoline or distillate can be used. This engine will start on No. ? distillate, and show great economy in fueheonsumption.-Phoe- nix Gazette.
 To Cure a Cold in One Day A,,, TI,I