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Improvement in Thill-Couplings.

Description: Patent for improvements in thill-couplings "whereby provision is made for the easy connection and disconnection of the shafts or pole of the vehicle without any unscrewing or removal of bolts or pins" (para. 2).
Date: unknown
Creator: Fitzsimmons, Henry
Item Type: Refine your search to only Patent

Load-Indicator

Description: Patent for a load indicator that can be attached to the sustaining cable of a drill, allowing its operators to more carefully control the amount of weight applied to the drill bit while it is in use - making it less likely to be crushed during the process of drilling.
Date: unknown
Creator: Fletcher, Harold W.
Item Type: Refine your search to only Patent

Lock Nut Construction

Description: Patent for “a lock-nut construction that can be applied and easily taken apart without injury and provide a device for locking a rotary cutting disk in place and prevent accidental removal from its bearing.” (lines 14-19) including instructions and illustrations.
Date: unknown
Creator: Hughes, Howard R.
Item Type: Refine your search to only Patent

Tree-Heater.

Description: Patent for Tree-Heater. "The object of the invention is to provide a device of the character described for the purpose of generating and distributing heat and so constructed that it may be suspended from or placed beneath small trees and shrubs for the purpose of raising the temperature of the atmosphere surrounding the same in order to prevent said trees or shrubs and the fruit thereof from being injured by reason of cold" (lines 11-19).
Date: unknown
Creator: Wilson, Luther M.
Item Type: Refine your search to only Patent

Tunneling-Machine

Description: Patent for a horizontal tunneling machine comprised of two different drill mechanisms - an inner and an outer drill stem - that could be operated separately and at different speeds, and adjusted while the drills were running. The drills make use of the tricone drill bit invented by Hughes in 1909, and could drill through hard rock more effectively than previous mechanisms.
Date: unknown
Creator: Hughes, Howard Robard
Item Type: Refine your search to only Patent

Well-Screen.

Description: Patent for improving well screens used in tubes for water or oil wells, with illustration. This describes how to secure its place within the tube.
Date: unknown
Creator: Layne, Lloyd F.
Item Type: Refine your search to only Patent

Shock Absorber

Description: Patent for a new and improved shock absorber which is "primarily intended for use as a connecting and cushioning medium between the upper and lower springs commonly employed under automobile bodies" (lines 12-15), including illustrations.
Date: November 28, 1922
Creator: von Roeder, Benno Gilbert & Oates, Eugene Caroway
Item Type: Refine your search to only Patent
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