Identity area
Reference code
ALL/01/005
Title
Gravity Escapement: correspondence, notes and photographs
Date(s)
- 1917–1974 (Creation)
Level of description
File
Extent and medium
1 folder of loose papers
Context area
Name of creator
(1921–2015)
Repository
Archival history
Immediate source of acquisition or transfer
Content and structure area
Scope and content
Includes blueprint of gravity escapements; booklet of lesson 2/12 of British Horological Institute's "Correspondence Course in Technical Horology"; ball and roller bearings metric conversion tables; notes; correspondence regarding the manufacture of wheels and pinions; The Horological Journal article on "A Criticism of the ... Gravity Escapement" by O.B. Hutchinson; 1917 letter from A. Bertlain [?] with a design for a three-legged Grimthorpe escapement; five photographs; and a bundle of correspondence and photographs relating to the regulator clock by Isaac Jackson (1796–1862).
Appraisal, destruction and scheduling
Accruals
System of arrangement
Conditions of access and use area
Conditions governing access
Conditions governing reproduction
Language of material
Script of material
Language and script notes
English