GB633610A - Improvements in motor cycle frames - Google Patents

Improvements in motor cycle frames

Info

Publication number
GB633610A
GB633610A GB3101/48A GB310148A GB633610A GB 633610 A GB633610 A GB 633610A GB 3101/48 A GB3101/48 A GB 3101/48A GB 310148 A GB310148 A GB 310148A GB 633610 A GB633610 A GB 633610A
Authority
GB
United Kingdom
Prior art keywords
tube
plate
welded
central portion
side portions
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
GB3101/48A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
JAMES CYCLE CO Ltd
WALTER FREDERICK LECHMERE
Original Assignee
JAMES CYCLE CO Ltd
WALTER FREDERICK LECHMERE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by JAMES CYCLE CO Ltd, WALTER FREDERICK LECHMERE filed Critical JAMES CYCLE CO Ltd
Priority to GB3101/48A priority Critical patent/GB633610A/en
Publication of GB633610A publication Critical patent/GB633610A/en
Expired legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K19/00—Cycle frames
    • B62K19/30—Frame parts shaped to receive other cycle parts or accessories
    • B62K19/32—Steering heads

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Steering Devices For Bicycles And Motorcycles (AREA)

Abstract

633,610. Making cycle frames. JAMES CYCLE CO., Ltd., and LECHMERE, W. F. Feb. 3, 1948, No. 3101. [Class 83 (ii)] [Also in Group XXXI] A mounting member 20 for the front fork assembly of a motor cycle comprises a metal tube 21 adapted to form a steering bearing housing and an attachment portion formed of sheet metal plate having a central portion 25 embracing and welded or brazed to the tube and having rearwardly extending side portions 29, 30 for securing to a forward member 19 of the motor cycle frame. The forward end of the frame is formed from a single tube bent into a loop and secured at its ends'to the upper and lower portions respectively of an upright saddle tube 10. The forward end of the loop consists of an arcuate portion 19 to which the mounting member is welded or brazed. The central portion 25 of the plate has an oval-shaped opening to facilitate the folding of the blank around the tube 21. This opening may be used for the insertion of a name-plate or transfer. The length of the plate may be such that it is equal to the length of the tube 21 and the upper and lower edges of the central portion are flush with the ends of the tube. Alternatively, the plate may be initially longer than the tube and the edges subjected to a machining operation after application to the tube. Inwardly directed ears 31, 32 are provided on the upper and lower edges of each side portion 29, 30. Adjacent edges 33, 34 of corresponding ears are welded or brazed together. The plate may be welded to the tube 21 by applying a fillet weld along a tangential junction of the tube 21 and the side portions 29, 30. The side portions have rear edges of concave shape corresponding with the curvature of the rounded corner 19 of the frame. The tube 21 is of circular cross-section and its end portions 22 are of larger internal diameter than the central portion 23 to provide a housing for the bearings of the front fork assembly. The motor-cycle tank may be secured.at its forward end by means of holes 43 in the side portions 29, 30 of the plate.
GB3101/48A 1948-02-03 1948-02-03 Improvements in motor cycle frames Expired GB633610A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3101/48A GB633610A (en) 1948-02-03 1948-02-03 Improvements in motor cycle frames

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3101/48A GB633610A (en) 1948-02-03 1948-02-03 Improvements in motor cycle frames

Publications (1)

Publication Number Publication Date
GB633610A true GB633610A (en) 1949-12-19

Family

ID=9751953

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3101/48A Expired GB633610A (en) 1948-02-03 1948-02-03 Improvements in motor cycle frames

Country Status (1)

Country Link
GB (1) GB633610A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905776A1 (en) * 1978-02-24 1979-09-06 Cortanze Andre TWO-WHEELED MOTOR VEHICLE LIKE A MOTORCYCLE
DE3140207A1 (en) * 1980-10-09 1982-05-06 Honda Giken Kogyo K.K., Tokyo CONSTRUCTION OF AN UPPER FORK IN A MOTORCYCLE FRONT FORK
CN107150755A (en) * 2017-03-20 2017-09-12 深圳市人行者科技有限公司 A kind of curve vehicle frame

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2905776A1 (en) * 1978-02-24 1979-09-06 Cortanze Andre TWO-WHEELED MOTOR VEHICLE LIKE A MOTORCYCLE
DE3140207A1 (en) * 1980-10-09 1982-05-06 Honda Giken Kogyo K.K., Tokyo CONSTRUCTION OF AN UPPER FORK IN A MOTORCYCLE FRONT FORK
CN107150755A (en) * 2017-03-20 2017-09-12 深圳市人行者科技有限公司 A kind of curve vehicle frame

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