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Abridgments of Interesting Patent Specifications.

25th May 1905, Page 16
25th May 1905
Page 16
Page 16, 25th May 1905 — Abridgments of Interesting Patent Specifications.
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Which of the following most accurately describes the problem?

Nu. 9009 : dated April 2nd, 1904.— 11. 5, fiele-Shaw, of the Liverpool University ; It. B. Helliwell, Liverpool ; and IV. L. Gilder, of Brown-Bayley's Steel Works, Sheffield.—This is an improvement upon a form of wheel described in the Specification of letters Patent No. 19,786

of 1902, The wheel (Figs. tand 2) corn. prises an internally-channeled rim .(9), in which sectors (3) are mounted. The sectors are solid, but are carried by tubular spokes (1), as this arrangement gives greater strength and rigidity in proportion to the weight, especially where the spokes are comparatively long. The tubular spokes are reinforced by short liners (2), which are also tubular and conveniently situated at a point approximately midway along the length of each spoke. The sectors (3) are bent over at their ends, as shown at 32,, and fitted into the ends of the tubular spokes, within which they bear against internal abutments Oa). The ends (3%) of the sectors, and preferably the whole of each sector, are semi-circular in cross section, so that the adjacent ends of two sectors meet in each spoke. The inner ends of the spokes fit over projections (4) carried by suitable bosses. One boss is conveniently made integral with the hub (5), whilst the other boss (6) is carried by a screw-threaded ring (7), by which its position may be adjusted upon

the hub (5). The ring (7) is locked by a fixed nut (8). It will be seen that this arrangement permits the. spokes on one side to be inserted in place, after which those engaging the movable boss (6) are built in, and then the boss is advanced so that the whole of the spokes are held in position by compression.

Another construction of wheel is illustrated in Figs. 3 and 4, in which the spokes are placed under compression without moving them axially along the hub. In this construction the hub (to is provided with a series of semi-circular recesses (Dal) formed in the outer face of recessed flanges (tub). Co-operating with these flanges are annular cap members (I1) secured to the flanges (rob) by bolts and nuts (13) so that the ends of the spokes are gripped between the opposed members, and a cavity (ioi;) is formed between each pair of the members into which the ends of the spokes protrude. Mounted in this cavity is a ring (12), wedge shaped in cross section at those parts which lie beneath the spokes so that when the bolts are tightened both rings are forced forward and compress the spokes against the rim (9).

No. 54,664: dated June 29th, 1904.-2. Ducasble.--Cushion tyre.—This is a rubber tyre having in its interior spherical

chambers (b) closed by plugs (h), but having free communication with the atmosphere through a small orifice (c). The periphery of the tyre is provided with transverse recesses (d), each recess being situated in that part of the tyre which lies between two of the air chambers. These grooves allow the air chamber (b) to expand whilst any one section situated between the two grooves is compressed by contact with the road. The orifice (c) is too small to permit the whole of the air contained in any one chamber under pressure to be expelled whilst the vehicle is running, so that a pneumatic effect is,obtained without the inconvenience of an inner tube.

[Our patent abridgments are made by Messrs. 13oult, Wade and Kilburn, International Patent Agents, rri and 112, Hatton Gardens, London, E.C.]


Organisations: Liverpool University
People: Hatton Gardens
Locations: Liverpool, London, Sheffield

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