Patent GB-190519592-A (GB)
Title: Improvements in, or relating to Wheels for Vehicles.
Inventor: BROWN FREDERICK WILLIAM
Filed: 1905-09-28
Granted: 1906-09-06
Abstract: 19,592. Brown, F. W. Sept. 28. Motor road vehicles.-Comprises means for driving a spring wheel for vehicles and velocipedes consisting of two wheels placed side by side on separate axles enclosed in and separated by springs from a light steel framework secured to the axle, in such manner as to allow play of the springs. Each wheel has independent radial motion and a tyre formed of alternate gaps and projections, the object being to prevent any obstacle from affecting the wheel as a whole. The framework, Figs. A and B, has a lower horizontal part f<1> and an upper part f<2> passing over the top. On a driving-wheel there are additional stays f<7>, f<8>, Fig. B, fixed to the end of the main axle a<1> through which a live axle passes. The driving-wheel w may be chain - driven or attached to the live axle, and to keep the vertical motion independent a modified Oldham coupling or equivalent means is placed between the driving- wheel and a disk w<1> on the axle a<3> carrying the wheel w<3>, and also between the two wheels. The axles a, a<3> are supported in vertical bars x, x<1>, which are connected to the framework at each end by a parallel-motion device, shown in Fig. G, consisting of a plate v and pivoted links v'. Helical springs s, or carriage springs, are placed between the upper part of the framework and plates r secured behind the bars x, x<1>, which are also connected to the end of the framework by pivoted guiding-links c', c', Fig. A. The adopted form of coupling for transmitting driving motion between the wheels is shown in Fig. F. Pivoted links e<4>, e<5> connect the wheel at one side to a floating plate l<3> which is connected to the wheel at the other side (not shown) by the pivoted levers e<6>, e'. The tread projection on one tyre coincides with the gap in the other tyre, and may overlap to extend the whole width. Each projection may be of rubber secured by a plate and radial bolt, or may be of iron with rounded ends and rubber fillings let into recesses in the parts which first meet the ground and held by radial bolts. Figs. 10 and 11 show an additional way of connecting the two wheels by levers g<1>, g<2> which allow radial motion, limited according to the preceding. Fig. 9 shows a driving-wheel of a motor-bicycle. The hub m is recessed to revolve outside a tube n which has a vertical arm n<1> bearing on a spring and is fixed to the end of a controlling-arm pivoted at the bottom bracket. The driving-wheel w<9> is fixed on the inner end of a tube n<3> which revolves within a bearing n<2> fixed to the frame. The outer end of the tube n<3> drives the axle a through the medium of a coupling such as described. Fig. 14 shows an alternative form of parallel motion, and Fig. 5 an alternative coupling described in the Provisional Specification. Links l are pivoted at one end to one wheel and at the other slotted end to a crossbar P. Links l<3> are pivoted to the cross-bar and to the other wheel at their slotted ends. There is also an application e, e<1> of the Oldham coupling, the object being to get independent vertical motion along with the rotation.