A yellow coloured cardboard front cover with black information. Near the top reads Australian Air Publication 7453.099-3. Above the RAAF insignia reads Royal Australian Air Force and under the insignia are the details of the manual. Down the right hand side there are cardboard inserts with writing on each tab. The manual is held together by two metal staples. There is an amendment inside the manual.royal australian airforce - manuals, australian air publication, circuit breaker, circuit breaker type d

File containing correspondence between the MMTB Chief Engineer Mr. Strickland and various companies, including Railless Ltd, Australian General Electric, English Electric / Dick Kerr and its UK consultants Heap and Digby between the period August 1922 and January 1923. Includes drawings, technical specifications and a book titled "AEC Railless Trolley Bus Specification", date stamped 15/8/1922. For a scan of this document see htd535-trolleybus.pdf (imaging not working correctly for this database as at 9-8-14) For a listing of the contents of this file and of Reg Item 535, see Related Documents - htd535-536list.pdf Item 535 - Trolley Buses Listed from top of file, in order found. Letters generally to/from MMTB Chief Engineer. Date Type, contents and notes 18/11/1922 Letter to Metro Vickers from Chief Engineer re Railless trams 12/1/1923 Letter to Aust GE re railless trams Not likely to proceed at this time. 11/1/1923 Letter from Aust GE Co. providing photographs, drawings, BTH, pamphlets, and general information. Includes photo of Tee-side trolley bus No. 17. No other papers with this item. 6/9/1922 Letter to Aust. GE asked for particulars and drawings of motor omnibuses These three items pinned together. 5/9/1922 Letter to Chief Engineer from Aust. GE provided up to date figures on BTH Railless vehicles. These three items pinned together. 31/8/1922 Letter to Aust GE returning folded of data in relation to petrol and petrol electric cars. These three items pinned together. 24/10/1922 Letter to Heap & Digby, thanks for information, but unlikely to use trolley buses due to poor road conditions where they could be used in terms of revenue. 14/9/1922 Letter from Heap & Digby, inclosing photos of Railless Ltd vehicles supplied to Bloemfontein South Africa and testing. These two items clipped together with drawing No. SK 14-8, showing Mexborough gradients. 28/8/1922 Letter from AEC to Heap & Digby re trolley buses, construction costs and practicality of shipping these to Aust. Includes the Mexborough test results. These two items clipped together with drawing No. SK 14-8, showing Mexborough gradients. 3/8/1922 to 31/10/22 Correspondence between MMTB and H&D regarding the Bloemfontein vehicles. Pinned together. 17/11/1922 Letter from Metro Vickers to MMTB providing details (no photos or drawings) of trolley buses – four pages. 18/1/1923 Letter to H&D thanking him for information and a paper ready by a Mr. Munro. 31/8/1922 Letter to Metro Vic – Melbourne asking whether Westinghouse had developed standard lines of motors for railless cars. 4/10/1922 Letter to Aust GE thanking for info. 2/10/1922 Letter from Aust GE providing two cuttings about railless vehicles in Birmingham and the cost of tram track construction. Papers Contained within a green strip of cloth. 26/9/1922 Letter from H&D providing info from EE – Dick Kerr Preston works equipment used by Railless Ltd. EE Specification for DK 26B Trackless trolley motors 18/9/1922 Letter from EE to H&D providing info on 20HP motors, 40HP, and other information. Blueprint – drawing 2810 – DK 26 Motor Performance curves for above motor Blueprint – No. 1312D – controller diagram Pamphlet – EE – tramcar Type D automatic circuit Breakers. Publication No. 230, dated 9/1920. Ditto, Form A, drawings No 3565, 1/1/19. Performance curves – blueprint – Type DK85A Blueprint – 4449 – outline of controller DK, Type D, form B. Blueprint – P2002M034 – DK85 Motor. EE specification for Traction Motor DK85 Modified from a tram motor. EE blueprint P2102F021, traction control wiring for form D controller. EE blueprint P2103F033 – outline of controller type SE1, form C and D. EE blueprint P2102Z011 – wiring diagram for type SE1 form controller. Performance curves for DK85A motor. EE blueprint – P2102F025 – diagram of connections (wiring) for Type SE1, form D controller. Blueprint – EE drawing – P2002M036 – DK85 motor with ball bearings. Single documents. Date Type Notes 27/9/1922 Letter to H&D acknowledging AEC Trackless trolley bus specification. 15/8/1922 Letter from H&D forwarding above specification String bound book – AEC Railless Trolley Bus Specification – stamped 15/8/22 Scanned as a separate document. 4/9/1922 Letter from Metro Vic. Melbourne advising that they have no information on Westinghouse Motors for use in railless cars, but seeking same.trams, tramways, trolley buses, melbourne, mmtb, aec, heap and digby, english electric, railless, dick kerr, general electric

File containing correspondence between the MMTB Chief Engineer Mr. Strickland and various companies, including Railless Ltd, Australian General Electric, English Electric / Dick Kerr and its UK consultants Heap and Digby (H&D) between the period August 1922 and August 1936. Includes drawings, technical specifications, some of which are duplicated in the Reg Item 535 file. For a listing of the contents of this file and of Reg Item 535, see Related Documents - htd535-536list.pdf Item 536 - Trolley Buses Listed from top of file, in order found. Letters generally to/from MMTB Chief Engineer. Date Type Notes 7/8/1936 Letter from TE Barnes – re Bremen Germany Steam Omnibus. Three pages. On foolscap paper – rest quarto. Has been damaged. 3/2/1926 Letter from Bruce Henderson re transport in the Glen Eira Rd area – poor private bus. 25/10/1925 Letter to G. Higgins, regarding a paper he had presented and printed in Australian Municipal Journal about transport around Melbourne, predicted the demise of trams, trains. Notes Spencer St bridge. Copy of paper is pinned with letters. 28/819/22 Copy of letter to H&D from AEC (see above) Includes the Mexborough test gradient drawing. Undated Pamphlet from Railless Limited about Birmingham’s new trolley buses. 16/3/1923 Extract from Electric Railway and Tramway Journal – wages of trolleybus drivers not getting paid extra in Bradford. Two copies pinned together. 9/4/1923 Letter from H&D re pamphlet exchange You should have had it! 23/2/1923 Letter to H&D asking for information. Has a note re the Board’s attitude towards motor buses. 28/8/1922 to 24/23 Series of letters pinned together with L. de Koenneritz regard trolley buses and Paris. Noted that the MMTB did not have the legislative power to run trolley buses. 15/2/1922 to 10/4/23 Series of letters pinned together with the Aust. GE regarding trolley buses and references to their operation in journals. 10/1/1923 Letter from H&D re request for information on driving gear of Railless Ltd. vehicles 23/2/1923 Letter to H&D re above. 23/2/1923 Sheet of paper on “Steads Review” paper – pamphlet not yet to hand. 8/11/1922 to 10/1/1923 Series of letters with H&D pinned together asking for Railless driving gear – reluctant to provide. 26/9/1922 Letter from H&D, with copy of letter from English Electric enclosing materials regarding Trolley Bus equipment. Note much of this material is the same as that in Reg Item 535 contained within the green cloth tape. Performance curves for DK 26B motor Blueprint – 4449 – outline of controller DK, Type D, form B. Specification for DK 26B trolley motor. Blueprint – drawing 2810 – DK 26 Motor Blueprint – No. 1312D – controller diagram Pamphlet – EE – tramcar Type D automatic circuit Breakers. Publication No. 230, dated 9/1920. Ditto, Form A, drawings No 3565, 1/1/19. Performance curves for DK85A motor Blueprint – P2002M034 – DK85 Motor. EE specification for Traction Motor DK85 Modified from a tram motor. Blueprint – EE drawing – P2002M036 – DK85 motor with ball bearings. EE blueprint P2102F021, traction control wiring for form D controller. EE blueprint P2103F033 – outline of controller type SE1, form C and D. EE blueprint P2102Z011 – wiring diagram for type SE1 form controller. EE blueprint – P2102F025 – diagram of connections (wiring) for Type SE1, form D controller.trams, tramways, trolley buses, melbourne, mmtb, aec, heap and digby, english electric, railless, dick kerr, general electric