Locking
being an elementary treatise on the mechanisms in interlocking lever machines by which the movements of the levers are restricted to certain predetermined ways, rendering it impossible to operate conflicting switches and signals on railways.
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Author
Publication
1907 - F.C. Lavarack, East Orange, N.J, New Jersey
Language
English
Word Count
20,000 words, Guess
Page Count
80 pages
Identifiers
- Open LibraryOL6991539M
- OCLC Control Number5217608
- OCLC Control Numberlockingbeingane01lavagoog
- Library of Congress Control Number07040015
Classifications
- LCCTF635 .L37
Subjects
Topics
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