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File:Longcase clock movement.png

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Summary

Description
English: Drawing of cross section of English longcase (grandfather) clock movement from the mid-1800s. It is described as: "The going part of a common regulator, or house-clock of superior character... The movement is that found in long-cased hall clocks..." This is a weight driven, pendulum clock with a one second (1 meter) pendulum, anchor or deadbeat escapement, second hand, and no striking mechanism.
Drawing also appears in Paul Nooncree Hasluck (1889) The Clock Jobber's Handybook, Crosby, Lockwood & Son, London, p.63, fig.14 with more information in text. Alterations: removed figure number. Labeled parts are identified in the text as:

(A) escapement pallet
(a) escapement arbor
(C) center wheel
(c) center wheel pinion
(D) second wheel
(d) second wheel pinion
(E) scape wheel
(e) scape wheel pinion
(F) crutch
(f) fork
(G) great wheel
(H) hour wheel
(K) square winding arbor
(L) bridge
(M) minute wheel
(N),(n) Motion works (together with M and H)
(P) pendulum
(Q) pendulum support
(R),(r) maintaining power ratchets
(S) pendulum suspension spring
(X) lower pillar
(Y) snail (only used in striking clocks)

(Z) top pillar
Date
Source Downloaded 2007-12-1 from Edmund Beckett Grimsthorpe (1874) A Rudimentary Treatise on Clocks, Watches and Bells, Lockwood & Co., London, UK, p.129, fig.25 on Google Books.
Author Edmund Beckett (Lord) Grimsthorpe
Permission
(Reusing this file)		 Public domain - Beckett died 1905

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Date/TimeThumbnailDimensionsUserComment
current16:19, 19 January 2008Thumbnail for version as of 16:19, 19 January 2008849 × 1,422 (194 KB)Chetvorno{{Information |Description=Woodcut of English longcase (grandfather) clock movement from the mid-1800s. This is a section through the center of the clock. |Source=Downloaded 2007-12-1 from [http://books.google.com/books?id=UnsDAAAAYAAJ&pg=PA63 Paul Noon

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