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open access

Fires on Farms.

Description: Describes what can cause fires on the farm, steps to reduce fire hazards, and equipment needed to fight home fires.
Date: June 1940
Creator: Roethe, Harry E. (Harry Edward), 1891-1989
open access

Flight investigation of control-stick vibration of the YG-1B autogiro

Description: From Summary: "As a preliminary step in an investigation of control-stick vibration in direct-control autogiros, the periodic variations in the moments transmitted through the control system of a YG-1B autogiro were recorded in flight. The results of the measurements are presented in the form of coefficients of Fourier series expressing the varying part of the lateral and the longitudinal moments acting between rotor and fuselage at the control trunnions. The most important component of the var… more
Date: June 1940
Creator: Bailey, F. J., Jr.
open access

Hog-lot equipment.

Description: Provides descriptions and instructions for building many types of equipment used for raising hogs. Includes fencing, feeding equipment, shelters, pest treatment equipment, breeding crates, and transportation equipment.
Date: June 1940
Creator: Russell, E. Z. (Ellsworth Zouave), 1866- & Buckley, S. S. (Samuel Sutherland), 1873-
open access

Italian High-Speed Airplane Engines

Description: This paper presents an account of Italian high-speed engine designs. The tests were performed on the Fiat AS6 engine, and all components of that engine are discussed from cylinders to superchargers as well as the test set-up. The results of the bench tests are given along with the performance of the engines in various races.
Date: June 1940
Creator: Bona, C. F.
open access

A Method of Measuring Piston Temperatures

Description: "A method that makes use of thermocouples has been developed to measure the temperature of engine pistons operating at high speeds. The thermocouples installed on the moving piston are connected with a potentiometer outside the engine by means of pneumatically operated plungers, which make contact with the piston thermocouples for about 10 crankshaft degrees at the bottom of the piston stroke. The equipment is operated satisfactory at engine speeds of 2,400 r.p.m. and shows promise of successfu… more
Date: June 1940
Creator: Pinkel, Benjamin & Manganiello, Eugene J.
open access

Rhubarb Forcing.

Description: Describes methods of forcing rhubarb, using methods developed in Massachusetts and Michigan.
Date: June 1940
Creator: Beattie, James H. (James Herbert), b. 1882 & Beattie, W. R. (William Renwick), b. 1870
open access

Tests of Lead-Bronze Bearings in the DVL Bearing-Testing Machine

Description: "The lead-bronze bearings tested in the DVL machine have proven themselves very sensitive to load changes as in comparison with bearings of light metal. In order to prevent surface injuries and consequently running interruptions, the increase of the load has to be made in small steps with sufficient run-in time between steps. The absence of lead in the running surface, impurities in the alloy (especially iron) and surface irregularities (pores) decreases the load-carrying capacity of the bearin… more
Date: June 1940
Creator: Fischer, G.
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