. American engineer . e. The recessed upperend of the pedestal is provided with upper and lower grooveswith plates secured to the pedestal. In the grooves thus pro-vided are placed annular ball bearing collars held in place by springs. Any tendency to divert the shaft from the vertical isat once taken up by the shifting of the ball bearing collars, whichmove in opposite directions. This does not interfere with theresilient action of the volute spring. This device was invented and patented by Henry A, Bates,Middletown, Conn,, and Harold Ferrell, Plainfield, N. J. PORTABLE FLOOR CRANE AND HOIST
. American engineer . e. The recessed upperend of the pedestal is provided with upper and lower grooveswith plates secured to the pedestal. In the grooves thus pro-vided are placed annular ball bearing collars held in place by springs. Any tendency to divert the shaft from the vertical isat once taken up by the shifting of the ball bearing collars, whichmove in opposite directions. This does not interfere with theresilient action of the volute spring. This device was invented and patented by Henry A, Bates,Middletown, Conn,, and Harold Ferrell, Plainfield, N. J. PORTABLE FLOOR CRANE AND HOIST The portable crane shown in the illustration has proved to beof decided value in a large number of railroad shops. Thecrane is shown as working in the erecting shop, where experi-ence has proved there are a large number of operations towhich it can be adapted with a very distinct saving in time andeffort. In addition to this, however, it is used with advantagein the machine shop handling work to and from the Portable Crane Removing a Steam Chest. as well as transporting heavy parts under a balcony and simi-lar places where overhead cranes cannot reach. The crane here shown is manufactured by the Canton Foun-dry & Machine Company. It is provided with roller bearings,which greatly improve the ease of operation. The arrangementis simple and will allow one man to lift and carry from 200 to4,000 lbs. on. the hook. Causes of Forest Fires.—The various causes of fires have notchanged greatly in their relative proportions. Railroads andlightning head the list, with campers next. There has been,however, a marked decrease in the number of fires caused byburning brush, which, according to the forest officers, indicatesa closer co-operation with the settlers in and near the forestsand with timberland owners in hre prevention and control. It isstill true, nevertheless, that a large proportion of all fires startedare due to human agencies and may generally be charged againstcarel
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
