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Patents Completed.

4th November 1915
Page 20
Page 20, 4th November 1915 — Patents Completed.
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Which of the following most accurately describes the problem?

Removable Cylinder Construction. A Locking Friction Clutch. Another Resilient Wheel. Novel Differential Gear.

rim or tread is elastic, and it is connected to the inner rim or felloe by a number of rectangular frames. The frames are made up of two pins, one passing through the tread and the other through the felloe and side links connecting them.

The general effect is that the facie is suspended from the flexible rim, • and if the wheel meets an obstacle the rim is slightly deformed, and the links are tilted to a greater degree than they are normally, in taking up this change of shape. In the construction shown in the left-hand section the links are restrained by a pin fixed in the felloe. In the right-baud section, tail-pieces on the links bear against a resilient cushion, which limits their movement and tends to cause them to return more rapidly to their normal position.

A. A. Scorr, No. 1292, dated 26th January, 1915.—The object of this invention is to provide a construction of cylinder which shall be easily removable from the crankcase. The drawings show two sections of a cylinder at right angles to one another of one form of the invention. The joint between the cylinder casting and the crankcase casting is made to include both the transfer and exhaust passages for the workMg fluid, and also the connections for the eirrulating water, co that there are no pipe. joints to be broken when the cylinder is being removed.

The left-hand section shows the inlet or transfer passage and the exhaust. In both cases the passage formed in the cylinder casting is enlarged radially so that access can be obtained to the cylinder ports with a file for trimming or ad j fisting them. tively locked by a dog-dutch after they have been engaged. The sleeve carrying the male member of the clutch itself carries a sleeve with teeth formed on one end to engage corresponding teeth provided in the female member. A spring presses this dog-clutch forward into its engaging position, but this spring is weaker than the spring normally pressing the two cones into engagement with one another. The clutchfork acts upon the sleeve of the dog-clutch ; when first moved to disengage the clutch it compresses the weaker spring and disengages the dog-clutch, and subsequently compresses the, strong spring and disengages the friction members. When engaging the clutch a reverse seriee of operations takes place.

B. C. WETHERELL, No. 23,204, and cognate applicatien No. 4450, 1915, dated 28th November, 1914,1n this gear the drive is transmitted to a crown-wheel carried on a centrally. disposed •disc. Secured on each side of this disc are small niece formed with teeth to engage similar toothed members on the ends of each of the road-wheel shafts. The teeth have their thriving faces inclined to the axis of the shaft, as shown most clearly in the detailed sketch, so that if only one of them is driving, the wedging action tends to push the teeth out of engagement, and this is allowed for by making the two toothed discs axially movable. If one road-wheel runs faster than the other its clutch member is carried forward away from the tooth driving it; so that the drive is at first given to the other wheel, but the clutch is forced across out of engagement until it picks up the drive on the other wheel, when it is again forced back.

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