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GB714185A
|
|
Improvements in or relating to packing for rods
|
|
GB698164A
|
|
Improvements in shaft sealing means
|
|
GB718039A
|
|
High fluid pressure packing device
|
|
US2627042A
|
|
Transmission having power coupling device
|
|
US2611249A
|
|
Selector control system
|
|
GB671482A
|
|
Improvements in or relating to sealing packings
|
|
US2556834A
|
|
Preselective and actuating mechanism for selective speed transmissions
|
|
US2619984A
|
|
Fluid level control
|
|
US2601611A
|
|
Crown block
|
|
GB637805A
|
|
Improvements in or relating to cylinders for pumps and the like
|
|
US2541625A
|
|
Adjustable multiple engine transmission
|
|
US2470960A
|
|
Automatic wash pipe oiler for rotary swivels
|
|
US2502710A
|
|
Safety stop for drum travel
|
|
US2467685A
|
|
Air throttle control for internalcombustion engines
|
|
US2485940A
|
|
Packing cartridge
|
|
US2412020A
|
|
Working platform arrangement for portable derricks
|
|
US2496569A
|
|
Wash pipe for rotary swivels
|
|
US2464469A
|
|
Hydraulic brake with auxiliary safety device
|
|
US2459472A
|
|
Rotary swivel
|
|
US2487905A
|
|
Rotary swivel having improved means for relieving pressure on the packing
|
