US281889A - Assigistob to the pope - Google Patents

Description

(NoModel.)

' J. KNOUS.

PEDAL FOB. VELQGIPEDES. No. 281,889. l Patented July 24, 1883.

N. PETERS, mmLimognpnur. wnhingiun. D. C.

' v UNITED STATES i PATENT OFFICE.

JOHN KNOUS, OF HARTFORD, CONNECTICUT, ASSIGNOR TO THE POPE MANUFACTURING COMPANY, OF SAME PLACE.

PEDAL FOR VELOCIPEDES.

SPECIFICATION forming part of Letters Patent No. 281,689, dated July 24, 1883. Application fiieaApri]2s,1se3. (No model.)

To all whom, it may concern,

Be it known that I, JOHN KNoUs, of the city of Hartford and State of Connecticut, have invented certain new and useful Improvements in Pedals for Velocipedes, of which the following is a specification. Y

My invention relates more particularly to that class of pedals called in the trade ball pedals, and to improvementsV and contrivances for adapting and applying them to endless or continuous bent crank-shafts for tricycles, Ste.

Heretofore pedals 'for these bent crankshafts, where the pedal pin or journal on which the pedal revolves has no free end over which the pedal may be slipped, have been divided into halves or otherwise longitudinally and placed on their shafts and secured there, usually having plain bearings, but sometimes with rollers and sometimes with grooves on the shafts and corresponding grooves in the pedals, so as to make what are called ballbearing7 pedals when in place. Five princip al difficulties attended these p reViously-constructed ball-pedals, namely: the difficulty of getting the balls into the grooves and in proper place in putting thepedal on its shaft; the difficulty of getting a true bearing of the pedal on the shaft through the balls, with correct adjustment when it is put on; the difficulty of entire want of means for adjustment of the bearing after it has been put on to compensate for wear; the difficulty, or rather the imperfection, for a bearing of having no hardened-steel surfaces on the shaft or in the pedals for thel balls to run on, and the difficulty of having two breaks or cracks in the material for the track of each rowof balls.

The object of my improvements is to avoid these diftiulties and to furnish the desideratum in a tricycle-pedal-namely, one that shall be readily applicable to a bent shaft of anti-friction ball or roller construction, with continuous hardened-steel surfaces for the balls or rollers, and with means for adjustment to correct position and for wear.

The manner in which I accomplish these objects and the nature of my invention will be apparent from the following description, taken in connection with the drawings, in which- Figure 1 shows, partly in elevation and partly in section, the material part of a bent crankshaft with pedal embodying my improvements in one form 5 and Fig. 2 shows in end elevation the same pedal without crank-shaft or ball-A eases.

A is a bent crank-shaft. c a are annuli or slightly-raised surfaces i upon the shaft A, about the distance apart of the length of pedal, and adjusting devices with screw-threads on their peripheries.

B is a barrel or cylindrical'portion of the pedal inclosing the shaft.

C C are the end plates of the pedal.

D D D D are clamps or brackets 011 the barl rel B for the end plates.

EE are flanges or open cylindrical parts on the barrel, the end plates, the lugs, and the flanges-may all be made in one piece of metal and then divided in the middle, or may be made in separate pieces adapted to be secured together; or they may be divided any other way, the essential thing being to have these parts of the pedal separable, so that they may be put onto or taken off from the shaft, and securable together, so that they may form practically one connected pedal-frame when on the shaft.

F F are rubber pedal-bars on the pedal-rods G G, and, as I prefer to make this pedal, there are four of these bars and rods-.two in each halfthe object of this being to raise the soles of the riders shoes resting on the surfaces of the rubber bars off from the metallic parts between.

K K are hardened-steel balls.

b b are adjusting or steel rings having hardened conical or grooved surfaces for the balls to rest on, and threaded internally, and adapted to run on the threads on the annuli a a.

c c are serrated ridges or annuli on the cones Z b. i

d is a washer. c is a set-screw. f is a setnut.

g is a cylindrical hardened-steel ball-case, having, as I prefer to make it, a lip or inward projection, m and h is a ring or circular plate fitting into the end ofthe cylindrical ballcase g.

it' are holes in the lugs or clamps D D D D, and k 7c are screws. i

To put these parts together and operate the same, I generally proceed as follows: Having the pedal-frame made in two parts or halves,

as before described, with the bars F F', &c., and the rods G G', dre., secured in place therein, and having also the cylindrical ball-cases g, and the corresponding one for the other end of the pedal, with the rows of balls therein, and closed by the insertion and securement of the rings or circular plates l1', the balls also being held from dropping out of the cases by the inward lipsm, I first, beginning with one end- I-I, for instance-of the shaft A, slip on the cone b', which is of slightly larger diameter than the diameternof the shaft A, so that it will slip around the curve or bend ofthe shaft and bring it approximately to its place on the threaded annulus a. I then put on in the same manner the case g, containing the balls K, and bring that approximately to its position, as shown in Fig. 1. I then put on a similar cylindrical case with balls, but with the reverse side first. I

then put on in a similar way the adjusting-cone b, the washer (l, andthe set-nut f. I then place the parts of the pedal frame between and around the cylindrical cases g and on the shaft A, bringing them to their required relativel position, and so that the fianges E E and the outer portions of the end plates, C C', which are within the flanges, form a firm inclosure and securement of the ball-cases g, which are thus rendered substantially component parts of the pedal-frame, the two parts of the pedal-frame being secured firmly together by the screws or bolts k k in the holes z li. I then turn the adjusting-cone b to the desired position and secure it there with the set-screw e, complete the adjustment of the pedalgbearings by turning the cone Z1 to its proper position, and secure it there by turning up the set-nut f ti ghtly. Now, the bearing of the pedal is entirely upon the two rows of balls, one at either end, and the balls at either end take their substantial bearings on the side of the case adjacent to the end plate, on the side adjacent to the flange, and on the cone, and of course against each other. It is evident that the balls have a continuous track, that the surfaces on which they bear may be finely polished and hardened, and that complete adjustability for position and to compensate for wear is secured, as well as the other advantages referred to.

It is obvious that modifications as to form of the contrivance shown and described may be made without departing from the spirit of my invention, and that the same may be applied to wheels or other pieces of machinery than pedals or in other machines than tri cyel es wherever it is desired to have an adjustable ball or roller bearing on a bent or continuous shaft.

I claim as new and of my inventionl. The described velocipede-pedal, consisting in two complementary parts, and having the bars F Fl G G, end plates, H H, ears D D', and screws k, and the.flanges E E, constructed and adapted essentially as set forth.

2. In combination with a velocipede, bent pedal-shaft A, the raised seats a, c, and movable cones b b, constructed and adapted substantially as and for the purposes set forth.

3. rIhe combination, in a veloeipede-pedal and bearing device, of a twopart pedal and flanges E E, with cylindrical ball-cases g g', detents h h', and balls K K, all constructed and adapted to operate substantially as set forth.

4. The combination of shaft A with raised seats a a, adjusting-concs b b, and means :for setting the same in adjustment, ball-cases f/ g, and the two-part flanges E IG', and end plates, H H, bearing pedal-bars, and firmly secured together, essentially as set forth.

JNO. KNOUS.

Witnessesz WVM. M. DURELL, J. L. BLANCHARD.

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