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American
Level Patents:
Illustrated and Explained Volume 1
By
Don Rosebrook
In this companion
to American Levels and Their Makers, Vol. I, the author presents
that great rarity—a book on patents that both illustrates the patents
(in a size large enough to be useful) and explains them. Two hundred
and ten level patents are pictured and explained here, with explanations
keyed to the patent drawings. They illustrate the major and continuing
contributions by L.L. Davis, Justus Traut, the Stratton Bros., and
L.S. Starrett, among others.
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To aid in identification,
each patent is triply indexed: by date, patentee, and category (e.g.,
inclinometer, sighting level, adjustment mechanism, etc.). In addition,
the book provides a brief history of the men who obtained the patents,
information on whether, when, and how the patents were used, the progression
of “improvements” in patent concepts over time, and information that
may be useful in identifying mystery levels. This volume, relating
patents to real tools, will prove an invaluable reference for tool
collectors and dealers, as well as for students of industrial technology.
256
pages. 7 x 10. Fully illustrated. Soft cover. © 2000.
ISBN: 1879335921.
Order Number: AP921. Price: $24.95 $18.95
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“…good
research, good reading, good information.” —The
Gristmill
“…contains
a wealth of information which could otherwise only be obtained
by endless hours of research.” —TATHS
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