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PATENTS SUMMARIZED.

1st November 1917
Page 22
Page 22, 1st November 1917 — PATENTS SUMMARIZED.
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Which of the following most accurately describes the problem?

Collapsable Jib Crane for Heavy Lorries. .

The device described in patent specification 109,743, by 1'; White, of Iiighfield Avenue, Great Sankey, Warrington, should, to use a hackneyed expression, fill a long-felt want, He has invented a folding jib crane, which can conveniently be mounted at the corner of the cab of a commercial motor. The main pillar is carried at sits base in a stiff bracket which is secured to the frame of the body ; at its top 'end .it is secured by a clamp to the upper struc.ture of the cab. The jib is hinged to a.sleeve which can, by means of a cotter or similar device,: be fastened at any suitable height up the main pillar. The tie rod of the jib may be flexible, as for instance, if it be of wire rope, or alternatively, .itmay be constructed of rods, and articulated in the middle of its

length, so that it will fold up out of the way when the crane is not in use.

A glance at our illustration will enable the reader to understand how the apparatus can be folded up against the wall of the cab when not required.

A Flexible Coupling.

TrAble has frequently followed the adoption of touring-car designs for commercial-vehicle work. As 'a rule, such trouble has eventually proved to be the consequence of a failure to realize "the especial qualifications ,which are necessary if a converted machine is to stand up to commercial service.

The ,principle embodied :in the coupling described in patent specification No. 109,721. for example; is one which might very'eonveniently andwiefully be employed on a .three-ton -chassis-, although, as it is actually 'describedin the sped.fication, it is •eyidently intended ih the first plate for inclusion in the transmis,sionof a light car or cyclecar; The coupling is a, flexible one, and it acts in two ways.

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We reproduce one of the drawings which are puhli,shed With the specification; it shows Cr. engine flywheel with the flexible ,coupling contained within it, the transmission thence being by chain. The sprocktt pinion is attached to a sleeve which rides loosely upon the boss of the wheel. To the sleeve is secured a pair of opposed levers which bear on the ends of coiled springs. The broken ring, which is just within the rim of the, flywheel, is of spring.steel, and tends always to bind to the inner lower surface of the .rim. Attached to this spring member and coiled within it isa bar, and .on the bar are mounted the helical springs which engage with the ends of the levers attached to the sleeve which covers the sprocket. As' May be seen by reference to the dravting, one of :these springs. bears against one end of the spring band, the other abuts on a

collar on the inner bar. • The action is as follows :—The flywheel transmits the drive to the Spring band, which, however, slips when subjected te an unusual shock. The band drives the two-armed lever, and, through it, the sprocket, hot .transmits the driving force through the coil. springs, thus • always ensuring a certain amount of give and take in the transmission. The inventor is E. A. Jern, of Brunnsgatan 70, Garle, Sweden.

Disc Wheel with Detachable Rim.

This patent (No. 109,580) describes two methods of building up a disc wheel. In the one, the discs are stiffened by being trussed by means of wire spokes; in the other, the stiffening is effected by means of secondary discs. One disc is fixed firmly to the huh of the wheel, the other is. centred on the hub by means of a conieal seating, which is Screwed. into place on the hub. Seth discs are shaped at their circumferences so as conveniently to carry the rim. When the rim is 311 place it is secured between the two discs by the latter being squeezed together by a number of bolts, evenly spaced round the circumference, and each of them passing through lugs which are formed on the under-side of the rim.

The rim is divided at one point, 'so that it can be made to collapse, and thus allow. ease of , removal and -replacement <11 the tyre. „ A latch secures the two free . ends in their correct relation, one to another, when the tyre is in place and the , rim ready for attachment to its wheel. As an additional safeguard, the latch is so formed that it al,so does duty as one of lugs for the joint bolts of the d of lugs for the joint bolts of the d The patentee is F. E. Baker, of Precision Works, King's Norton, Binning

ham. •

An Improved Thrust-bearing.

W. Fowler, of 27, St. Mary's -Road, Doncaster, describes, in specification No. 109,2:3b, an -improved ball-bearing thrust washer. The principal .elaini-.1s for a simplification of the usual construetion., and a reduction in the number of working parts without,of corn -se,. se,..impaing in any way the efficiency, 'or reliability of the bearing. The construction is amply shown by 'the:drawing ,which, we .reproduce, arid need's no further description.

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Locations: Garle, Great Sankey

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