An Analysis of the Lever Escapement: A Lecture Delivered Before the Canadian Watchmakers' and Retail Jewelers' Association (Classic Reprint) - Hardcover

H. R. Playtner

Hardcover

ISBN 10: 0265274958 ISBN 13: 9780265274958

Publisher: Forgotten Books, 2018

Synopsis

Excerpt from An Analysis of the Lever Escapement: A Lecture Delivered Before the Canadian Watchmakers' and Retail Jewelers' Association

Primitive or Geometrical! Diameter.-in the ratchet tooth or English wheel, the primitive and real diameter are equal; in the club tooth wheel it means across the locking corners of the teeth; in sucha Wheel, therefore, the primitive is less than the real diameter by the height of two impulse planes.

Lock equals the depth of locking, measured from the locking corner of the pallet at the moment the drop has occurred.

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About this edition

• Publisher: Forgotten Books
• Publication date: 2018
• ISBN 10: 0265274958
• ISBN 13: 9780265274958
• Binding: Hardcover
• Number of pages: 60