Hand drawn diagram 'Quiescent Driver' circuit

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Archive Record|Table of contents

Frederick Lanchester collectionLAN

Correspondence and other documents ('Baxter' series)LAN/1

Frederick Lanchester correspondence and documents ('Fletcher' series)LAN/2

Biographical information on Frederick LanchesterLAN/2/1

Material on Frederick Lanchester compiled by Dr Peter Kingsford for his biography of LanchesterLAN/2/2

Frederick Lanchester reports for the Advisory Committee for AeronauticsLAN/2/3

Correspondence between Frederick Lanchester and the Advisory Committee for AeronauticsLAN/2/4

Correspondence relating to flightLAN/2/5

Lanchester's Laboratories LimitedLAN/2/6

Material relating to car manufactureLAN/2/7

PublicationsLAN/2/8

Personal and business correspondenceLAN/2/9

Frederick Lanchester's views on warfare tacticsLAN/2/10

Correspondence concerning financial matters, and Frederick Lanchester's deathLAN/2/11

Material relating to worm gears, aircraft propellers and wings, and Lanchester's Laboratories Ltd salesLAN/2/12

Reprints of articles and publications written by or about Frederick LanchesterLAN/2/13

Correspondence mostly relating to the publication of Frederick Lanchester's 'Potted Logs'LAN/2/14

Miscellaneous correspondence including with Colonel [Rookes] Crompton, electrical engineering pioneerLAN/2/15

Frederick Lanchester papers on optics and visualsLAN/2/16

Anatomy and vision/opticsLAN/2/17

Anatomy and vision/opticsLAN/2/18

Correspondence mostly concerning articles, papers and talks on vision and opticsLAN/2/19

Correspondence from Frederick Lanchester to Professor Robert LockhartLAN/2/20

Correspondence from Frederick Lanchester to Professor Robert Lockhart and othersLAN/2/21

Correspondence from Professor Robert Lockhart to Frederick LanchesterLAN/2/22

Copy correspondence from Professor Robert Lockhart to Frederick Lanchester, Lanchester family members and othersLAN/2/23

Correspondence between Frederick Lanchester and Robert LockhartLAN/2/24

Correspondence between Frederick Lanchester and Robert Lockhart mostly concerning anatomy, optics, visionLAN/2/25

Supplemental material donated at a later date - mostly aeronautical/militaryLAN/2/26

Supplemental material donated at a later dateLAN/2/27

PatentsLAN/2/28

PatentsLAN/2/29

Typed copy letter from Dugald Clerk Esq. [consultant engineer], to Lanchester Engine Co. Ltd concerning patent no. 7909 of 1900LAN/2/29/1

Copy typed letter from Frederick Lanchester to S.C. Winfield Smith Esq., Burovox LtdLAN/2/29/2

Copy typed letter from S.C. Winfield Smith to Frederick LanchesterLAN/2/29/3

Typed letter from Frederick Lanchester to Messrs Marks & Clerk asking for a detailed schedule of five patents he has listed where rights in them are being made over to a company whose functions are mainly developmentalLAN/2/29/4

Typed list of live patents with foreign equivalentsLAN/2/29/5

Telegram [from international patent agents Boult,Wade & Tennant] to Frederick Lanchester, c/o Daimler, Coventry concerning royalty arrangmentsLAN/2/29/6

Copy typed letter [from Frederick Lanchester] to H. Wade, Boult Wade & Tennant confirming a telegram he sent earlierLAN/2/29/7

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning US patent no. 1085442 (damping tortional vibration)LAN/2/29/8

Telegram [from international patent agents Boult,Wade & Tennant] to Frederick Lanchester, accepting his offer of £3,000 for the assignment of Amerian patentLAN/2/29/9

Typed copy letter from Boult Wade & Tennant to Frederick Lanchester concerning US patent no. 1085442 (damping tortional vibration)LAN/2/29/10

Telegram from Boult Wade & Tennant to Frederick Lanchester, hoping to complete transaction tomorrow [relating to US patent no. 1085442 (damping tortional vibration)]LAN/2/29/11

Typed letter from Boult Wade & Tennant to Frederick Lanchester acknowledging that he has received the £3,000 cheque for purchase of his US patent no. 1085443LAN/2/29/12

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning British patents 26038/11, 26777/11, 27398/12LAN/2/29/13

Copy typed letter from Frederick Lanchester to Boult Wade & Tennant replying to their letter concerning three patents and giving more details on themLAN/2/29/14

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning British patents and the information he has sent themLAN/2/29/15

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant confirming he has sent pamphlets mentioned in his previous letterLAN/2/29/16

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning his US patents 'balancing means for reciprocating engines' and 'balancing device for reciprocating engines'LAN/2/29/17

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant about their asking for a price for his American patents relating to engine balancingLAN/2/29/18

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant about their asking for a price for his American patents relating to engine balancingLAN/2/29/19

Typed letter from Boult Wade & Tennant to Frederick Lanchester replying to his letter asking for more information on the potential buyers of two of his American patentsLAN/2/29/20

Typed letter from Boult Wade & Tennant to Frederick Lanchester replying to his letter of 3 February 1916 asking for more information on the potential buyers of two of his American patentsLAN/2/29/21

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant replying to their letter of 7 February 1916 about his request for more information on the potential buyer of the patents relating to engine balancingLAN/2/29/22

Typed letter from Boult Wade & Tennant to Frederick Lanchester replying to his letter of 9 February 1916 about his asking price for two US patentsLAN/2/29/23

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant replying to their letter of 11 February 1916 about figures relating to his two US patentsLAN/2/29/24

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant replying with a price for his two American patentsLAN/2/29/24A

Typed letter from Boult Wade & Tennant to Frederick Lanchester replying to his letter of 11 February 1916 about his asking price for two US patentsLAN/2/29/25

Typed copy of letter from Boult Wade & Tennant to Frederick Lanchester showing reply of their American agents (14 February 2016) concerning his asking price for his American patentsLAN/2/29/26

Typed copy of letter from Boult Wade & Tennant to Frederick Lanchester showing reply of their American agents (19 February 2016) concerning his asking price for his American patentsLAN/2/29/27

Typed copy of letter from Boult Wade & Tennant to Frederick Lanchester noting that his asking price for his American patents is too highLAN/2/29/28

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant replying to their letter of 8 March 1916 (LAN/2/29/28)LAN/2/29/29

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant, giving a fuller reply to their letter of 8 March 1916 (LAN/2/29/28)LAN/2/29/30

Typed letter from Boult Wade & Tennant to Frederick Lanchester replying to his letter of 17 March 1916 about his counter proposal for a price for the two American patentsLAN/2/29/31

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning his counter proposal for a price for the two American patentsLAN/2/29/31A

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant, replying to their letter of 19 September 1916 (LAN/2/29/31A)LAN/2/29/32

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning his letter of 20 September 1916 with more details on a potential price offer for the two American patentsLAN/2/29/33

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning the two American patents he is willing to sellLAN/2/29/34

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant acknowledging their letter of 27 November 1916LAN/2/29/35

Typed letter from Boult Wade & Tennant to Frederick Lanchester concerning tracing the owner of a British patent relating to springsLAN/2/29/36

Copy typed letter [from Frederick Lanchester] to Boult Wade & Tennant replying to their letter of 12 October 1916 about springsLAN/2/29/37

Typed letter from Boult Wade & Tennant to Frederick Lanchester thanking him for his letter (15 October 1916) with information on the British patent relating to springsLAN/2/29/38

Hand drawn diagram 'Quiescent Driver' circuitLAN/2/29/39

Copy typed patent application for improvements in electrical amplifiers for the reproduction of sound and like purposesLAN/2/29/40

Annotated photocopy of LAN/2/29/40LAN/2/29/41

Receipt from Patent Office for application and provisional specification of the patent for improvements in electrical amplifiersLAN/2/29/42

Form from Patent Office accepting application and provisional specification for improvements in electrical amplifiersLAN/2/29/43

Receipt from Patent Office for patent 11859LAN/2/29/44

Copy of LAN/2/29/40LAN/2/29/45

Form from Patent Office acknowledging receipt of application and provisional specification for patent no. 35784LAN/2/29/46

Form from Patent Office acknowledging receipt of application and provisional specification for patent for improvements in change speed mechanism more especially applicable to power propelled vehicles and locomotives (no. 35784)LAN/2/29/47

Copy typed patent application for improvements in speed change mechanism more especially applicable to power propelled vehicles and locomotivesLAN/2/29/48

Draft typed copy of LAN/2/29/48 with annotationsLAN/2/29/49

Patent Office receipt for patents 35784 and 34038LAN/2/29/50

Patent Office form acknowledging receipt of application and provisional specification for no. 34038LAN/2/29/51

Form from Patent Office acknowledging receipt of application and provisional specification for patent for improvements in change speed and reversing gear for power propelled vehicles (no. 34038, dated 27 November 1934)LAN/2/29/52

Copy typed patent application for improvements in change speed and reversing gear for power propelled vehiclesLAN/2/29/53

Provisional specifications patent form for improvements in change speed and reversing gear for power propelled vehiclesLAN/2/29/54

Typed copy of LAN/2/29/54LAN/2/29/55

Form from Patent Office acknowledging receipt of application and provisional specification for patent for improvements relating to aeronautical machines (no. 34498, dated 16 December 1936)LAN/2/29/56

Patent Office receipt for patent 34498LAN/2/29/57

Typed copy of improvements relating to aeronautical machinesLAN/2/29/58

Typed copy of patent application for improvements relating to aeronautical machinesLAN/2/29/59

Form from Patent Office acknowledging receipt of application and provisional specification for patent for improvements in and relating to aircraft (no. 1796, dated 21 January 1937)LAN/2/29/60

Patent Office receipt for patent 1796LAN/2/29/61

Typed copy of patent application for Improvements in and relating to aircraftLAN/2/29/62

Copy of LAN/2/29/63LAN/2/29/63

Form from Patent Office acknowledging receipt of application and provisional specification for patent for improvements in and relating to explosive bombs (no. 2458, dated 28 January 1937)LAN/2/29/64

Form from Patent Office concerning date of amended application for patent 2458, and errors that need correctingLAN/2/29/65

Patent Office receipt for patent 12898LAN/2/29/66

Patent Office receipt for patent numbered 12898LAN/2/29/67

Copy typed patent application for Improvements relating to the control of internal combustion engines for the propulsion of aircraftLAN/2/29/68

Notes and correspondence on obtaining copyright on a book in the U.S.A.LAN/2/30

Miscellaneous correspondenceLAN/2/31

Lists compiled by Frederick LanchesterLAN/2/32

BlueprintsLAN/3

Sketch booksLAN/4

Note booksLAN/5

PatentsLAN/6

Glass plate negatives and imagesLAN/7

Photographic negatives of the blueprints (LAN/3)LAN/8

Sales and marketing photographsLAN/9