Canadian machinery and metalworking (July-December 1917) . om, or with standard handrail on ex-posed sides. (See Figs. 59, 60.) Belts over Driveways—Where a hori-zontal belt is located over a driveway orpassageway, the highest floor of anywagon or truck passing beneath the beltshall be considered a working platform. Belt Fasteners—All belts not providedwith guards as specified in Class A or Band within seven feet of the floor orworking platform shall be free frommetal lacings and metal fasteners. Belt Shifters—Belt shifters shall beprovided for all tight- and loose-pulleybelts, and shall be so
Canadian machinery and metalworking (July-December 1917) . om, or with standard handrail on ex-posed sides. (See Figs. 59, 60.) Belts over Driveways—Where a hori-zontal belt is located over a driveway orpassageway, the highest floor of anywagon or truck passing beneath the beltshall be considered a working platform. Belt Fasteners—All belts not providedwith guards as specified in Class A or Band within seven feet of the floor orworking platform shall be free frommetal lacings and metal fasteners. Belt Shifters—Belt shifters shall beprovided for all tight- and loose-pulleybelts, and shall be so designed and con-structed that ordinary vibrations or acci-dental contact will not alter the set posi-tion, and shall have a controlling handleconveniently located. (See Figs. 61-63.) Pulleys—Pulleys belted from above orfrom the side in such a way as to allowpassage beneath the pulley, and withinseven feet of the floor or working plat-form and not completely enclosed bystandard belt guards or handrails, shall July 12, 1917. CANADIAN MACHINERY 45. FIGS. 4 TO 27. GUARDS FOR VERTICALBELTS. be guarded to the top of the pulley or toa height of seven feet above the floor orworking platform on exposed sides andbeneath by guards as specified in ClassA or B, or be enclosed on exposed sides bystandard handrails. (See Figs. 64-67.) Bearing Clearance.—The clearance onshafting between pulleys and bearingsor between pulleys and fixed objects shallbe not less than thirty-six inches andwider than the belt, or the pulleys shallbe guarded on the near side with station-ary guards as specified in Class A or B,and all revolving objects in the clearanceshall be smooth, cylindrical and concen-tric with shafting. (See Figs. 68-73.) Belt Clearance—The clearance onshafting between pulleys and pulleys, col-lars, couplings or other revolving attach-ments shall be wider than the widest belt FIGS. 28 TO 46. GUARDS FOR INCLINEDBELTS. used, or the pulleys shall have flanges orguards to prevent th
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectmachinery, bookyear19
