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SAFETY WITH SIMPLICITY Powerful Springs supply setting force entirely independent of any other source of power. Wire Rope lead to = ------_____ power operated drum. Keeper Rod to prevent over-travel of toggle. Spring Carrier with guide rollers transmits spring thrust to toggle system. AGO oa ARAVA AAG Multipart Wire Rope increases single line pull to close toggle, compress springs, and release Clamp. Ample sized Sheaves give long rope life. Heavy Clamp Arms with \ long lever Qworking \ . over fulcrum pins thru short leverage @pro- ~4-----\|~-\\_----------- ---] ---- duce tremendous clamp- ing force at rail. POSITIVE and ECONOMICAL CLAMPING with ano patented RAIL CLAMPS The investment made in a coal unloader, ore bridge or any other type of material hahdling equipment warrants the use of a dependable rail clamp arrangement with the highest possible safety factor. Insurance reports show that equipment losses have been heavy in recent years. The Dravo Patented Rail Clamp is designed to provide positive clamping on single or double tracks giving the highest safety factor at economical cost. It is not a stock clamp and each unit is designed to meet all the requiremehts to which your equipment will be subjected. DRAVO CORPORATION Slotted Holes in sup- porting structure allow, Clamp to follow misaligned rails if necessary. Ample Clearance so Clamp does not ride rail. Removable toothed = hardened steel con- Sturdy Pins provide ful- - tacts provide high crum for Clamp Arms. friction factor. Section of Clamp in closed position FREE BULLETIN: Our Bulletin 215 explains in detail the features of the Dravo Patented Rail Clamp. Copy free on request. PITTSBURGH 25, PA. 69