FlightGlobal.com
Home
Premium
Archive
Video
Images
Forum
Atlas
Blogs
Jobs
Shop
RSS
Email Newsletters
You are in:
Home
Aviation History
1910
1910 - 0775.PDF
SEPTEMBER 24, 1910. machine, the governor clutches in the make-and-break, which, owing to the gearing, causes a perceptibly interrupted buzzing to be heard. A small switch could be fitted so that the instrument may only be connected when required. Well designed the total weight need not in any way be excessive. This would seem to be more efficient than the musical instrument or whistle type, which would scarcely be audible under the best conditions. C. J. L'ESTRANGK MALONK and D. H. THOMSON. [14] I beg to enclose idea for speed-alarm. As a special clai:n in my idea, I think that a definite note, such as me or soft (easily recognised) would be much more suitable than a siren or whistle without such a distinguishing feature. r V w 3 I B' ! | ME | t>OH 1 SOH /» l« DOM I SOW Ml 1 The reference letters denote :—A, hinged wind-shield. B, slid* covering pipes. C, pipes, bugle intervals, easily recognised. D, hinge to wind-shield. E, lever lifting slide. .»»•«; Liverpool. A. SWEENEY. [15] In the accompanying sketch (1) is a brass whistle i8.ins. long, fitted with a brass sleeve (2) controlled by a fork (3) acting on a stud attached to the sleeve. A funnel (4) 1 ft. in diameter is attached to the end of the whistle in order to collect the air. r About I in. from the end of the whistle are two D-shaped guides fixed inside the funnel to accommodate a small screen (5) which passes through a slot in the funnel. The screen is controlled by an angle piece (6), attached to a light spring, and the setting of the angle- piece is governed by the air-pressure on a plate (8), attached to an arm (7). The arm (7) is connected by a rod (10) to a fork (3), so that the movement of the sleeve (2) is also controlled by the air pressure. The sleeve (2) uncovers holes in the whistle so as to change the note. The screen (5) is adjusted so as to prevent the whistle blowing at all below a certain speed. T. LANCASTER. [16] In the accompanying sketch, T is a multivaned fan, operat ing the centrifugal governor, G, which actuates the gong, B. It will, therefore, be seen that when a certain speed is attained, the gong will be drawn down far enough to come into contact with the hammer, H, this hammer is held in position by the spring, P. The fan is enclosed in the protecting case, V, made of aluminium and held on to the spindle by the lock-nut, K. The indicating attach ment is enclosed in an aluminium case attached to the thin case containing the governing mechanism and is composed of a steel I/LIGHT) cone, S, which is drawn along by the sliding-sleeve when the fan starts to turn. Pressing on the cone is a small polished cam, X, which terminates in the pointer, N, this pointer being held at zero by a spring and pivoted between the jewels, J. It will, therefore, 1 : seen that according to the speed of the fan, the cone will com- rass a varying circumference of the cam, X, thereby causing the pointer to read off the speed in miles per hour on the equi-distant scale, M. 'GRATZE' SPEED LIMIT ALARM The whole mechanism is run on ball-bearings so that friction is reduced to a minimum, and if desired, the indicating mechanism or attachment may be fitted to the dashboard and connected by a thin steel wire enclosed in a tube to the governor. Reference to the other letters are as follows:— D is a raised cam on the gong which strikes the hammer, A is part "of an adjustable bracket, O represents holes drilled in the containing case to allow the sound to come through. Practically all of the parts of this apparatus are constructed from aluminium and magnalium, and the total weight, including the speed indicating apparatus, is approximately 2 lbs. 4 ozs. E. V. GRATZE. Further letters, accompanied by descriptions and drawings, for the Speed Alarm Competition are acknowledged from :— O. D. Atkinson. E. Rogers. T. Lancaster. J. H. Gardew. David Hutton. "H.R.A." J. C. Thompson. " Amateur." D.Langhame-Thornton J. R. Turner. D. G. O. Hiscox. Harry Hewett. G. Wells. S. D. Felkin. K. G. Jobson. John Russell. J. S. Bell. G. A. Chapman. A. H. Bailey. S. Silk. F. Webb. J. Gee. J. M. Jepson. F. Williams. J. W. Smith. M. W. Thompson. A. E. Rutherford. B. N. KablL J. B. Wallace. F. C. Kent. Edgar Edwinson. W. Walden. Robt. Grossart, Jun. H. Warrington. Dorrington & Thomas. C. B. Garden. Leslie Waggott. J. H. Wilkins. F. B. Baggs. C. A. Chappell. Harold Crombie. W. Langdon-Davies. Wm. Tattersall. H. A. Hutt. P. Crowsley. A- Tridon. A. Chandler. C. R. Taylor. Flight Medals at Brussels. IN the aeronautical section (Class 34) of the Brussels Exhibition the following awards are announced :— Diploma of Honour.—Hans Renold, Ltd., Manchester. Gold Medal.—" Harts," London. Silver Medal.—North British Rubber Co., Ltd., Edinburgh. A Sign of the Times. As an indication of the widespread interest attaching to all aeronautical matters, a special course of twelve French lessons, introducing all technicalities in connection with aeroplanes, has been inaugurated by the Gouin School of Languages, 185, Oxford Street. 773 D 2
Sign up to
Flight Digital Magazine
Flight Print Magazine
Airline Business Magazine
E-newsletters
RSS
Events
