. American engineer . i in. outside diameter and 9 in. long. A slot 3 in. x1 in. is provided on the upper end for the clearance of the keyin its vertical motion. The trolley roller is made of forged steel and provided with aflange to prevent lateral motion. The wheel has a 3 in. boreto accommodate IS 15/32 in. diameter steel rollers, 2 in. long,case hardened. This roller bearing is a decided improvement overa plain bearing, especially when exceedingly heavy forgings areto be manipulated. The rollers cannot fall out, being held in bythe saddle on the inside and by a steel washer on the outside,
. American engineer . i in. outside diameter and 9 in. long. A slot 3 in. x1 in. is provided on the upper end for the clearance of the keyin its vertical motion. The trolley roller is made of forged steel and provided with aflange to prevent lateral motion. The wheel has a 3 in. boreto accommodate IS 15/32 in. diameter steel rollers, 2 in. long,case hardened. This roller bearing is a decided improvement overa plain bearing, especially when exceedingly heavy forgings areto be manipulated. The rollers cannot fall out, being held in bythe saddle on the inside and by a steel washer on the outside,which is 5 in. in diameter by % in. thick. This in turn is securedby a 15^ in. nut on the end of the wheel pin. Owing to the vi- brations of the crane proper due to the heavy hammer blows, thevarious nuts should be prcjvided with lock washers, etc. A pieceof flat bar iron 4 in. x % in. thick, having hexagonal holes to fita lyi in. nut, at the proper centers of the pins, which are 15 Shock Absorber for Cranes. in this case, serves this purpose. To prevent these keepers orlock straps from slipping off a 5/16 in. cotter is provided in each nut and pin. EFFICIENCY George F. Hinkens (West. A. B. Company) :—Efficiency is sys-tematic organization and practically a community of we are particularly interested in as foremen is shop or in-dustrial efficiency. Industrial efficiency is not applied is always more or less trouble in attaining the proper de-gree of efficiency. If the most efficient engineer or expert takehold of a demoralized and disorganized concern, let him not thinkhe is going to embark upon something with the belief that all isto be smooth sailing, for if he does he is certain to be dis-illusioned. We must deal with human nature as we find it, notas we would like it to be, consequently in striving for greater ef-ficiency and better service we must ever bear in mind the humanfactor. Much has been written on efficiency movements,
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectrailroa, bookyear1912
