USRE16287E - Fbederick william bakeb - Google Patents

Description

- March 9 1926. v 7 Re. 16,287

i F. w BAKER VEHICLE WHEEL Original Fil'ed Feb. 2 1920 rims. t H

' v[The-object of my invention is to realize or Reissued 9,1926, r

I .umT o STATES loss-Ice...

rnnnnmox .WILLIAM BAKER, or s ronmmrnsn, nnermvn'.

' vmiIcLn'wminm on m i no. "1,5245%, .datedl'ebruary 3, 1925; scan $55,682, mea rebni r 2, 1926. lama 1:01--

reiseue filed September- 28, 192 5L' Serial No. 58,182; v

' 'To all wiiom may concern: Be it known that I, FREDERICK WILLIAM BAKER, a subjectof .the King ofGreat Britain, and a resident otOl'dswinford, Stourbri dge, in the county of Worcester, England, have invented certain new and useful Improvement's in Vehicle Wheels, of which the following is a specification.

Y My invention relates to that type of wheel ,which comprises two concentric 'metallic' rims-spaced apart'lby distance pieces, the

inner or fixed rim being connected'with the hub, and the outer rim carrying the pneumatic or other tire, with theobject of making use of the natural resilience of the two attain, in an arrangement of this'kind, the

maximum of resilience for the purpose of absorbing'shocks, whether originating in the drive, or in obstacles encountered on the road, with the minimum of deformation of I the. wheel due to such shocks.

In my invention the fixed rim is attached to the outer rim at three equidistant places, each attachment being preferably of greater dimension in the direction of the circumference of the wheel than indepth (i. e. the

radial distance between the two rims) so as to permit of such attachment transmitting the drivin tor no to the outer rim withoilt undue strain on the attachment. I also preferably make the area of attachment as stiff as possible to constitute each-arc of 120 degrees of the outer rim, in effect what is known 'as an encastr beam, whereby the I deflection'produced by the outer rim encountering an obstacle is reduced"to a minimum.

At the same time, by having three places'of attachmentonly, the arcs ofthe outer rim.

are madeas long as possible, and t e spring action of the outer rim is at a aximum. The 'fixed rim is connected to the hub by means of a spoke system'comprising a three armed spider the armsof which are preferably longitudinally curved, and arranged in a symmetrical combination or series of arches between the inner rim and the hub with the ends of the spokes attached to the inner rim at points substantially midway between the clip bearers and the central portions of the spokes secured to the hub, whereby such shock. as is transmitted from the outer to the inner rim a're made aslong as possible spring "action.

"In these drawings, Flg-ure l-is an elevation of the complete whee which embodies adetachable metal 7 nm 'for carrying a pneumatic tire."

Figure 2*s 'a vertical section of Figure 1 on the dotted line a.

Figures 3 and 4am enlargedscale sections taken respectively on the dotted lines fw and 1 :0, Figure 1.

The same letters indicate corresponding parts in the several .figures.

According to the said invention, as in the of reference are used' to example 'Illlllt rated, Ipropose to permanently moun Vwheel ,'a metal ring'or felloe 6 (preferably steeL) which .is connected :to a three armed around the centre a of the spider a at three equi-distant placeslso as to leave the sections of the ring intermediate the connections free to spring, yield, or give withln' lllIlltS imposed by the natural elasticlty of the metal.

In the particular construction shown in the drawings, where the f centre has three radial arms or branches a,

the connectionsa between the outer ends of I these arms and thering b are arranged...at

120 degrees apart, whilst the rim 0 that car.- ries the tire is concentrically mounted around the "said felloe-ring (prefcrably by clips on other connections such as d that per-.

init of the detachment of the said 'rim) but it is'se'p'arated therefrom by, an annular space e; and these r1m;connect1ons d are likewise three in number and are separated and equi-distantly disposed so as to leave the intermediate and naturally-elastic portions 0', 0 c of the rim likewise free to spring 7 --or-yield in the same manner as the unconnected portionsb', 6 ,6, of the inner felloe I). Said connections at are of greater dimensio'n in circumference than in the radial direction, and so far as this invention is concerned they may be detachable .or fixed,

and mayor may not permit vthe demounting 'of the outer rim, the important thing being".

tofproduce the wide resilient arcs of the outer rim and to distribute the'bearingsbetween the arts where the inner-rimv con nects with't e spoke-s stem. 7 j

The connections dgetween the-rim the .fixedrim produces the minimum of'defelloe b, are disposed sothat they alternate flection and yet at the same time-the arcs of all round the wheel with the connections 6 and lit ] between the felloe the ends of the arched spokes, that is to say,;in a construction such as shown in which the three felloe and centre connections d are spaced at 120 degrees apart, and'three connections (1 between the felloe and the rim are likewise spaced, 1 arrange each of the rim clips -d midway between the felloe and the centre so that each point of attachment of the rim with the Wheel is located at the middle 01E the unattached resilient portion 6, 6 or b of'the felloe b,.whicl1 enables the spring of the said felloe to be usedto the best advantage as. a medium for taking up any -shocks that may be transmitted from the road to the rim and thence through the rim-clips to the felloe. Further, by virtue of the annular spacin or separation of the rim and felloe and t e wide angular separation of the connections d, the free or unconnected and resilient parts 0,-0,'c-", of the rim itself also serve efl'ectively'to take up road shocks or to prevent their uhmoditied transmission of shocks to the spoke,

as system and axle; the'arrangement' being such that as the wheel rotates, free or unconnected sectors of the rim and felloe are alternately available to serve after the manner 1 of springs for cushioning the wheel centre.

'30 A further advantage of the alternating disposition of the two separate series of connections a, d, is that, as the wheel centre is in spaced connection only with thegfelloe,

and the free and unconnected sections of the felloe'in turn are in spaced connection with the annularly separated rim, the part of the wheel between the hub or axle and the circumference that are under load compression' cannot transmit a dead compression 4o thrust on the circumferential parts of the structure, since when one ofthe felloe to centre connections is'under the hub and-subjected to vertical load, the, resilient sector of the :telloe to which the centre is connected can yield or give under the thrust, which.

prevents the elastici sector of the rim itse i impaired by theload;

The loaded centre of so in suspensionfrom the encircling rim through the medium of the rim clips; these wi 1 provide for or admit of the detachment of the corresponding being neutralized or f the rim and tyre from the oth r part f Blithe wheel wh eq i a p The centre portion a of the wheel rim be tof any suitable construction'which-will end. itself to spaced attachment with the felloe. For, instance ,L'I may use spoke arrangements such as described the specification: of my concurrent application for a-.U.' 8. Patent.

Serial No. 355,631,'fi1ed February 2, 1920,-

v i, or I may adopt a pail-of stamping orvpressings a, a, which comprise three radial arms C6 and are breed or welded together to proends ofthe the wheel is carried ing of anysuitable construction that duce a hollow structure having three spoke i like arms a, radiating at angles of 120 degrees from the middle"port1on a the said middle portion being furnished with a hub g of any suitable type whilst the outer connected. a

The hub or hub casing. may

be separately made and riveted or otherwise attached to The said longitudinally curved or arched spokes and the hub constitute a three-armed spider and the said spokes are preferably made of sheet metal stampin'g's. p

This spider a (made preferably of sheet metal stampings) may otherwise be described as a semi-disc'wheel centre, in that it has all the'essential characteristics of a disc wheel (strength, lateral rigidity, simplicity, cheapness, ease of cleaning, etc.

but from the fact that it is shaped and adapted to permit of connection with the inner rimor ring at three areas of relatively short an tials to be obtaining without sacrificing the spring or elasticity of the inner rin Usually in wheels of the general character described, the load andshock or thrust have a tendency to deform the wheel into Qelliptical shape. This causes a loss of power as the flattened side of the wheel is substantially on the road and theefiect is analogous to constantly running up e.

With my construction it will be seen that if there is resiliencein'the rim, it is con fined to a sector between the members d, thus limiting the deformation, and such deformation even is theoretical rather than real, because the shockis absorbed and dis tributed between theseveralmembersd and.

4 the e ds of the spoke member a. Ehe spoke systemxpreventsi an noticeable deformation of the wheel, and ii the rims are rigid in stead. of. resilient, is substantially-as stated.

I claim:

1." In a wheel of the class described, an

outer rim, an inner rim within and spaced from the outer rim, clip bearers between said rims each of greater circumferential dimension than of radial dimension, said clip bearers detachably securing .saidwims together, and a three armed centre member comprising a hub, and three longitudinally curved spokes arranged :in a symmetrical combination of series of arches and between- 'theinner rim and the hub, the ends oi-the l spokes'bein'g secured to the inner rim at point's substantially midway between the spoke-like arms are suitably V 9.; or circumferential 7 measurement, it a lows the disc wheel essenthe distribution of strain clip bearers, and thecentre portions of the spokes being secured to the hill).

2. A vehicle wheel comp'rlsmg an outer rim, an inner rim..spaced from the outer rim, spacing and bearing members between said rims each of greater circumferential d1mens1on than of radial dimension, said 'bearing members being disposed at equirim, the arms of the spider being curved] to form a symmetrical series of arches and concentric distant poi nts, a hub, and a three armed spider connecting the hub. andthe inner having their outer ends secured to the inner rim at points substantially midway between said bearmgmembers. I

A v vehicle wheelcomprising spacednner and outer rims, bearing .said. bearing members.- I

members betweenthe. rims 'equi-distantly spaced, and .asspo'ke system having a three armed spider with the outer ends of the arms'connecting with the'inner rim at points essentially midway between the said bearing members.

4. A vehicle wheel comprising spaced concentric inner and outer rims, three-bearing members spaced at equ1-d1stantpo1ntsbetween the rims, and athree armed spider,

c0nst-itutingthe spoke system o'f-the wheel, said arms being c'nrvedto form syi'nmetrical arches, -and with their outer ends connected to the inner-rim at points midway between FREDER CK WILLIAM BAKER;

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