AT THE HEART OF THE ROAD TRANSPORT INDUSTRY.

Call our Sales Team on 0208 912 2120

Agricultural Motors.

27th April 1905, Page 6
27th April 1905
Page 6
Page 6, 27th April 1905 — Agricultural Motors.
Close
Noticed an error?
If you've noticed an error in this article please click here to report it so we can fix it.

Which of the following most accurately describes the problem?

Messrs, the Ivel Agricultural Motor Co., Ltd., of Biggleswade, 13edfordshire, and 45, Great Marlborough Steeet, W., are making a petrol tractor for use in hop gardens and vineyards, or where the working space is restricted in width. The tractor has throe wheels; tile front one, which is used for steering purposes, being 2oin. in diameter by yin. wide, with a solid rubber tyre of semi-circular section round the Centre of the tread, to give a good grip of the surface it is running on. The two driving wheels, which are yin. wide by 40111. diameter, arc placed inside the main longitudinal members of the frame. The channels and the stays are of steel of ample strength to resist the rough usage a machine such as this is subjected to, whether running over fields or along the highway. The engine is horizontal, and has two opposed cylinders, 52ein, in diameter by 5i0. stroke, and develops 14b.h.p. at goo revolutions per minute. The inlet valves are automatic, but the exhaust valves are mechanically operated by a 2 to 1 cam shaft working off the crank shalt. High-tension ignition by accumulators and coil is used, control of the spark being obtained by operating a lever attached to the steering pillar. The engine is water cooled, the thermo-syphon system of circulation being used, which does away with the necessity for a pump. The water tank is large enough to permit of the machine running a whole day without requiring to be refilled, An efficient governor is fitted, which actuates a butterfly valve working in the induction pipe; an auxiliary throttle worked from the steering pillar can also be used if necessary. The whole of the engine is enclosed to keep out dirt, and all its main bearings are lubricated by the Ivel patent force pump by which the flow of oil can be regulated according to the amount required. Other bearings on the tractor arc oiled by screw-down grease cups.

The tractor has one forward speed and a reverse, power being transmitted as follows. The crank shaft is parallel to the back axle, and is extended on one side to accommodate the female halves of two cone clutches 18m. in diameter, which revolve loosely upon it. These clutches are in such a distance apart that either of two male cones bolted to a sleeve sliding on the crank shaft can be brought into engagement with one of them, or the neutral position can be obtained by bringing the sleeve into its central position. A single operating lever at the driver's left hand is used for the forward gear, a small sprocket wheel which is carried by one of the female cones conveys the power from the engine by a Hans Renold silent chain to a sprocket on the counter shaft ; the reverse is obtained by a gear wheel, bolted to the second female clutch, which meshes with a larger gear wheel fixed LO the counter shaft. The power is finally transmitted to the road w heels by a roller chain working off a small sprocket on the counter shaft to a chain ring bolted round the differential gear box on the back axle. Steering is effected by a cross arm on the front wheel fork post, which is connected to the steering pillar by light iron tension rods. The tractor looks it businesslike machine, and is capable of good service in the directions it is constructed to work.

A member of ,our staff was recently present at a trial at Biggleswade to demonstrate the capabilities of the standard Ivel tractor. This was their ordinary r8b.h.p. machine, and was shown drawing a three-furrow plough, turning over a strip about 3oin, wide and from Sin, to min, deep; this it did with the greatest ease at a speed of about three miles per hour. We drove the machine, and were impressed by the ease with which it could be controlled and steered. Both ends of the crank shaft supply a means of coupling up the engine to thrashing machines, chaff-cutters, and. the like.

Tags


comments powered by Disqus