1910 Stanley Show Report
The Quadrant Motor Co.
Coventry. Stand in Annexe.
The Quadrant Motor Co., who are building a new factory in Birmingham. and will shortly remove to their new address 45-53 Lawley Street, in that city, will be showing several models of Quadrant motor-bicycles, these including a 3 H.P. Quadrant with gear-driven magneto. and fitted with free engine; also the 2 H.P. Quadrant light-weight and 4 H.P. loss built models for passenger work.
1910 Cycle and Motorcycle Exhibition
Quadrant Motor Co.
Coventry. Stand No. 270 Annexe.
Three models comprise the arrangements for the 1911 Quadrant motor-cycles, these being the standard 3 1/2 HP., a 4 H.P. for passenger work, and a 2 H.P. lightweight. Simplicity is the note struck in the design of the engine, this being carried out by reducing the gear wheels operating the valves, etc., to four. These, together with the gear drive of the magneto am enclosed in a neat dust-proof, oil-retaining case. The lightweight deserves special notice for the reason that the engine is a small replica of its larger brother, a factor which makes also for simplicity and, therefore, reliability. The new spring fork, fashioned somewhat on the lines of the well-known Quadrant fork but now adapted to take a front brake, should also be noticed.
A report on the Motor Cycle Show of November 1924 reads, in part,
"The 3 1/2 h.p. Quadrant has an engine of 79 mm. bore and loo mm. stroke, the cubic capacity being 490 c.c. It has a detachable head, and is fitted with either the Binks or Amac carburetter. The transmission embodies a Burman three-speed box, with clutch and kick-starter, all chain drive, aluminium covers for the chains, and 26 in. by 21 in. tyres. The 3i h.p. combination is the above machine with a light coachbuilt sidecar A 4... h.p. combination is also standardised, with a single-cylinder engine...
March, Newark & Co., Ltd., 45-49, Lawley Street, Birmingham.
No. 47. -"Quadrant" bicycle, fitted with Lloyd's "Cross-roller" gear, patent No. 6435/1897. Weight of complete machine 35 lbs. Presented by E. Figg. The rear portion of a frame is shown, separately, to demonstrate the mechanism of the gear; this was presented by A. R. Wayte, of Dublin.
This gear was a development of the bevel system of driving; when two "teeth," one driving and one driven, engaged each other, each was free to revolve on a fixed stud: this minimised the friction which is inseparable from any rigid mechanical method of conveying rotary drive round a right-angled corner. The hollow shaft, enclosing the usual chain-stay, revolved on ball-bearings. A letter from Walter John Lloyd, inventor of the gear, accompanies the exhibit. Mr. Lloyd (who is still alive) was an extremely clever engineer, and was responsible for the many ingenious innovations which were embodied in -"Quadrant " cycles. Notable among these were the special method of mounting the front wheel of a tricycle, which helped to make the -"Quadrant" of 1886-1890 such a popular
Mr. Lloyd also devised a very efficient spring-frame, while his back-pedalling band-brake* (fitted to exhibit No. 47) will repay careful examination. Note also the extension from the fork crown, strengthening each blade.*
Harry Chinn, of Birmingham -” brother of the more famous Fred. Chinn
-” made several records on the Crystal Palace track, using a -"Quadrant"
racing bicycle with Lloyd's cross-roller gear. He ran third in the 50-miles
National Championship, and covered 29 miles 465 yards in one hour (15th
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