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An R. G. LeTourneau, Inc. employee demonstrates the Tournatow by driving up sidewalk steps J5G

Photograph of an employee of R.G. LeTourneau, Inc., at the controls of the Tournatow, the first vehicle to feature electric-traction motors mounted in the wheel assemblies themselves. The four-wheel-drive and -steer tractor is being demonstrated at the Edgewater Beach Hotel in Chicago, Illinois, on 1950-11-17.

Date: November 17, 1950

Creator: R.G. LeTourneau, Inc.

Item Type: Photograph

Partner: LeTourneau University Margaret Estes Library

Keyboard for Writing Machines.

Patent for improved keyboards for writing machines "having its keys so arranged that the fingers of the operator may rest upon the keyboard in an easy and natural manner, the keys being so disposed with relation to each other that the fingers of the operator may reach all of them with the least possible strain or exertion" (lines 16-22). This improvement allows the operator to work at maximum speed and efficiency.

Date: April 17, 1917

Creator: Edwards, Alrah B. & Russell, Frank K.

Item Type: Patent

Partner: UNT Libraries Government Documents Department

Trombone.

Patent, including illustration, for "a musical instrument slide and is more particularly designated as a bearing or stocking for a trombone or other similar instruments in which it is desirable to provide a smooth bearing for the slidable part of the instrument" (page 1, lines 9-13).

Date: February 17, 1920

Creator: Ackley, William D.