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Hydraulic torque boosters
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Hydraulic reaction power amplification
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Pressure-holding valve with pressure-shifted jet
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Adjusting system for furnace controls
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Liquid supply tank
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Oil-burning and control apparatus
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Control system for electric motors
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Means for automatically controlling arc furnace electrodes
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Mechanism for supporting and automatically adjusting arc furnace electrodes
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Means for automatically adjusting arc furnace electrodes
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Mounting for electric arc furnace electrodes
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Furnace roof construction
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Means for automatically controlling the electrodes of arc furnaces
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Means for automatically controlling the electrodes of arc furnaces
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Automatic electric arc furnace electrode control
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Clamping mechanism for electric arc furnace electrodes
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Automatic electric arc furnace electrode control
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Roller floor for furnaces
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Draft connection for trailers
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Clamp for electric arc furnace electrodes
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