. The Street railway journal . cranes by streetrailways has led the Garry Iron & Steel Company, of Cleveland,Ohio, to build cranes of this type to meet the wants of streetrailways. These cranes are made in two forms, called Band C. Form B, which is shown in Fig. 1, has a capacity of 1000lbs., 7-ft. reach, and 12-ft. 6-in. hook lift. The total heightfrom the rail to the top of boom is 10 ft. 2 ins. Form C cranes are similar to Form B, but are designedfor larger capacities, being made for 2000 lbs., 3000 lbs., 4000lbs., 6000 lbs., 8000 lbs. and 10,000 lbs. capacity. The standarddimensions are as
. The Street railway journal . cranes by streetrailways has led the Garry Iron & Steel Company, of Cleveland,Ohio, to build cranes of this type to meet the wants of streetrailways. These cranes are made in two forms, called Band C. Form B, which is shown in Fig. 1, has a capacity of 1000lbs., 7-ft. reach, and 12-ft. 6-in. hook lift. The total heightfrom the rail to the top of boom is 10 ft. 2 ins. Form C cranes are similar to Form B, but are designedfor larger capacities, being made for 2000 lbs., 3000 lbs., 4000lbs., 6000 lbs., 8000 lbs. and 10,000 lbs. capacity. The standarddimensions are as follows: Reach, 12 ft.; hook lift, 12 ft. 6 ins.,and total height from rail to top of boom is 15 ft. 8 ins. Acrane of this form is shown in Fig. 2. Both of these forms are built mounted on a standard car, andarranged for standard gage. The gage may, however, bealtered to meet special requirements, or cranes may be mountedon special hand trucks. The cranes are usually equipped with a set of rail clamps, —7-4—clearan ee. FIG. 1.—1000-LB. REVOLVING CRANE which secure the car to the rail to prevent tipping when liftingthe load; the machines in themselves are not heavy enough toprevent tipping without being anchored. In special casescranes are furnished with counter balance on the turn-table,which obviates the use of the rail clamps. The crane base is bolted directly to the car having a ma-chined-ball race, containing 193 ground steel balls at its upperedge. The bottom of the base is machined to receive thecylinder, rack, guides, pivot and stop. The under side of theprojecting ring is machined for rollers and brake; the brakebracket is equipped with rollers and air cylinder actuated by afoot valve, which is convenient to the operator and is attachedto the turn-table. The hoisting cylinder is securely fastened
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Keywords: ., bookcentury1800, bookdecade1880, booksubjectstreetr, bookyear1884
