Box 3
Restricted
Contains 95 Results:
Pulley (three)
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Imrpovements in or relating to V-belt assemblies
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Variable speed transmission (two)
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Variable speed transmission with variable pitch driving sheave and reversing and breaking
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
A Variable speed reversible automotive transmission
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Premolded sealers for hydraulic torque units
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Variable diameter propeller unit
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Rotary Hydraulic Torque unit package
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Differential hydraulic mechanism for control of the propeller pitch
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
Hydraulic pitch control mechanism for propellers
This collection consists of Hoover's personal papers, materials covering his various patents on airplane propeller parts, and the legal issues generated over those patents. In addition, there are materials related to his work as a farmer, and the owner of a transmission and pulley company.
