Report
Report

Author: United States. Congress. House

Publisher:

Published: 1947

Total Pages: 2664

ISBN-13:

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How Families Use Their Incomes
How Families Use Their Incomes

Author: United States. Bureau of Human Nutrition and Home Economics

Publisher:

Published: 1948

Total Pages: 72

ISBN-13:

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This publication brings together descriptive materials on the economic position of families in this country, to show how families spend their incomes for food, housing, clothing, medical care, and other needs or wants. It shows some of the changes that have taken place in family spending in the past decade. It deals also with the circumstances that make important differences in family spending patterns.

Nitrided-steel Piston Rings for Engines of High Specific Power
Nitrided-steel Piston Rings for Engines of High Specific Power

Author: John H. Collins

Publisher:

Published: 1944

Total Pages: 90

ISBN-13:

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Several designs of nitrided-steel piston rings were performance-tested under variable conditions of output. The necessity of good surface finish and conformity of the ring to the bore was indicated in the first tests. Nitrided-steel rings of the same dimensions as cast-iron rings operating on the original piston were not satisfactory. The final design was a lighter, rectangular, thin face-width ring used on a piston having a maximum cross-head area and the proper skirt shape. Results were obtained from tests of single-cylinder and multicylinder engines.