PATENTS SUMMARIZED.
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Austin Agrimotor Spuds.
Sir Herbert, Austin, has in ventedan ingenious type of " submerSible " spud for agrimotor wheels. Each spud is in the form of a plain bar, and fits in an elongated slot in the rim of the wheel, being continued radially, and terminating in a boss, which is drilled and surrounds a pin, which is attached to what may be termed a falSe hilla of Use wheel. These spuds are disposed armind the wheel after the manner of tangential spokes. The false hub is designed to revolve upon the exterior of the real .one. Revolving the false huh in -one direction causes these spokes to project•through the rim of the wheel, when they serve as spuds. Revolving it in the other direction submerges the ends of the spade beneath the rim. The mechanism far moving the false hub con
of a hand lever, upon the 'axle of which is mounted a spur pinion, and the latter gears with the. segment of a spur 'gear which is attached to the false hub. A pin may be inserted, through the flange of the false hub'nto holes in the actual wheel hub, SO as, to fasten the mechanism in any desired. position. It will be gathered that the actual length of the projecting. part of the spur May be varied to :suit. • the conditions and nature of the soil 'uponWhich the mu,
chine is working. Specification No 115,468. .
.Novel AgrirnotOr Design..
• Another agrimotor patent, No, 115,467, is by J. Bamford and another: _ It has to do with an agrimotor of the type which is balanced about two driving wheels, and the invention in the ,main has reference to the method of elevating either or both of the wheels with reference to one another or to the frame of the tractor. Each wheel is suspended from the frame by three parallel links, all of which are of the same length, which corresponds to the distance from. the centre of the main driving axle to the axis of the. wheel. Swinging the links round is effected by a hand wheel operating through a pair of worms and wheels, which are coupled to two out of the three links. An interesting modification covers the provision/ of springs on these operating worm shafts, so arranged as to allow of a Certain amount • of elasticity, and thus provides an unusual method of springing the chassis. These springs may. be rendered inoperative at will.
Rails Clutch.
No. 115,484, by Q. E. D. Halls, concerns a clutch of the single-plate type. The eonstruction is interesting throughout, but the main, feature is the positive separation of the three members of the elutch, namely, the flywheel: and its integral friction disc, the centre driven disc, and. the outer sliding friction disc.
Improved Valve Gear.
H. V. J. Jouffret,' in No. 113,428, makes provision for the adjustment of the clearance between the end of an overhead valve stem and the roller on a rocking lever, by mounting that roller On an •eccentric axle.
Leaf Spring Construction.
In No. 115 446 an American patentee, the Standard 'Parts Co. in the case where a rear spring is utilised to transmit the drive and to take the torque reaction, besides forming the penal hushed' eye us the top leaf of the spring, prolongs the second leaf and_ forms at the end of it a second elongated hole. This surrounds a second pin on the chassis, so that in the event of breakage of the topleaf, the second one 'is available 4o act temporarily in its stead.
New Springing System.
A. J. Adams, in No. 115,586, improves upon a previous specification, No. 1.06,960, in which a pair of ',levers, as illustrated, acting upon a horizontal coiled Spring, farm a springing system for a vehicle. He couples.the free ends of the Lclevers to the plates upon' which time spring abuts by moans of knife-edged pins and levers; thus eliminating, so far as pes.sible, causes of friction and the passibility. of rusting up. This system of springing is applicable to the front and rear springs of a vehicle,
Dual Flexible Gas Container.
A dual flexible gas container is the subject of No. 115,583-7Short and another. As gas is taken from the inner chamber, air under pressure is forced between the two, thus maintaining the exterior shape of the outer con tamer,
Hallford Universal Joint. •
A universal joint which has the merit of being small and light is the subject of No. 115,451---J. E. Hall, Ltd., and another. Each hair of the coupling carries half-a-dozen teeth of a sprocket wheel. These are coupled by means of a sheet length of roller chain. The chief claims made for the coupling are that it can readily be connected or disci:MI-mated and, moreover, it is simple in construction and econothical in cost.