A Saurer Six-wheeler Axle
Page 68
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THE axle arrangement shown in patent No. 380,295, by Societe Anonym° Adolphe Saurer, Arbon, Switzerland, appears to be a particularly clean design, and to have many good points.
As will be seen, the main axle casing is formed of three parts, the central one carrying flanges at its ends to which the outer parts are bolted. The central part is provided with openings through which pass the arms which support the stub axles, these being allowed sufficient rotary freedom to oscillate over uneven ground.
To the ends of the arms the stub axles are mounted by means of enlargements, which can encase the bevel gears necessary for driving.
The elongations which carry the ball bearings on which the arms swing are so arranged that the bearings are far apart, thus relieving them of any great strain.
Two Combustion Chambers for Oil Engines.
pATENT. No. 339,450, by 0. Wans and Ruston and Hornsby, Ltd., relates to a form of combustion chamber for engines of the airless-injection type in which a pre-combustion chamber is provided into which the nozzle discharges the fuel, and from which it is again discharged into the cylinder through the small holes shown. The main feature of the invention appears to lie in tbe fact that the cone into which the fuel is discharged, although screwed into the head at I, has a clear space above, between it and the water-jacketed head at F, so enabling it to retain heat, which is claimed as an advantage.
Another design of head for compression-ignition engines is shown in patent No. 380,337, by Franz Lang, 41, Laimerstrasse, Munich. In this design air is admitted through a valve (K) into a chamber above the cylinder, whence it is forced through a duct (F) into a chamber which is not shown in the drawing. Opposite this duct is the fuel nozzle (E), the discharge from whic,h is met by the air returning from the 'compression chamber through the duct (F), from which it is discharged into the cylinder at a tangent, thus causing the rotary movement shown by the arrows.
A Six-wheeler Conversion.
DESCRIBED in patent No. 376,469, by Associated Engineering Industries, Ltd., proprietors of Atkinson Lorries, of Preston, is a means by which a four-wheeled vehicle can be converted to a six-wheeler of the kind in which only the one pair of wheels drives.
The bracket which normally supports the rear end of the spring is moved to the position shown at 3-, where it supports the rear end of the added spring. A compensating beam (N) connects the ends of the springs so that they may permit the wheels to accommodate themselves to uneven ground. A distance rod (P) is fitted to keep the axles the right distance apart, and a brake rod (8) ensures both brakes operating simultaneously.
Salt-cooled Valves.
PATENT No. 379,832, by the WilcoxRich Corporation, 9,771, French Road, Detroit, U.S.A., describes a method by which valve stems can be made hollow to contain a cooling medium. The upper view shows the stem in the first stage of manufacture.
The view below this shows" the stiri after having been swaged so that it is parallel on the outside. The next view shows it after machining, whilst the lowest v.iew shows the stem after the cooling medium has been introduced, and the end plugged and welded. _ The cooling medium suggested is a mixture of salts of potassium eitrate and sodium nitrate, 55 per cent. potassium nitrate and 45 per cent, sodium nitrate. Such a mixture of the salts of the alkali metals has a melting temperature of about 425 degrees fahr., which is well below the working temperature of such a valve.