US320145A - Cyclometer - Google Patents

Description

(No ModeL) 2 Sheets-Sheet. 1. G. H. LAMSON.

' GYGLOMETER.

N0. 320,145. Patented June 16, 1885.

(No Model.) 2 Sheets-Sheet 2. C. H. LAMSON.

GYOLOMETER.

No. 320,145. I Patented June 16, 1885.

UNITED STATES CHARLES H. LAMSON, OF PORTLAND, MAINE.

CYCLO iV! ETER.

PATENT @Fr-ion.

SPECKEICATIQN forming part of Letters Patent No. 320,145, dated June 16, 1885.

(No model.)

To aZZ whom it may concern:

Be it known that I, CHARLES ll. LAMsoN, of Portland, in the county ot' Cumberland and State of Maine, have invented new and useful Improvements in Cyclometers, of which the following is a specification.

This is a cyclometer intended particularly to be attached to bicycles and other velocipedes, and it is constructed especially with the View of making its op( ration and registration positive and without possibility oil' failure, re-

gardless of the speed at which the wheel whose revolutions are being registered is revolvinfr.

ln the accompanying drawings, in which similar letters of reference indicatelike parts, Figure l is a view looking` from the right side of portions of a bicycle-wheel, fork, and crank with my eyclometer applied in position for use. Fig. 2 is a view ofthe same, looking from the rear. Fig. 3 is a front elevation ot' the cyclometer. Fig. 4 is a vertical section showing the interior mechanism in rear elevation. Fig. 5 is an elevation of a portion of the inside of the fork with the cam attached and the roll by which said cam operates the cyclometer in position. Fig. 6 is a vertical section taken on the same line as that shown in Fig. 4, illustrating the modification. Fig. 7 is an elevation of a portion of the inside of the fork with mechanism attached adapted to the said modication.

A A represent the spokes of the drivingwheel of a bicycle.

B is a portion of the right side of the fork or frame, and G isaportion ofthe right crank.

D is the cyclometer box or case, secured to one of the spokes A next the right side ofthe fork B. The box D lies inside the wheel with its rear side to the right fork and its face to the'left side of the machine, so that the reader stands on the left side of the wheel to examine its record. It is secured to the spoke by clamps a a, held against the intermediate spoke by screws c, (not newin this inventiom) and also by the lower additionalclamps, b b', the former of which is widened as shown in Fig. 1, so as to cover a plurality of spokes, preferably three, in order that the cyclometer may during its entire action be fast on the same plane as the driving-wheel A.

E is aclip, of substantially the shape shown in Figs. l, 2, and 5, held upon the right side ot' the l'ork by set-screws c or other suitable means, and provided with the cam-groove E', which operates a friction-roller, F, on the free or outer end of an arm, F, rigidly secured to a shaft, G, passing through a corresponding opening in the rear side of the case D, said shaft being connected with the interior registering n'iechanism of the cyclometer.

The cyclometeron the spoke and the cam on the fork are both placed at about the same distance from the axis of the-wheel, so that with each revolution of the wheel the roll F on the arm or lever F will, when the cyclometer reaches the cam, enter the cam-groove and pass through it and out at the opposite end on the other edge ot' the fork.

Fig. l shows the roll about to enter the groove. Figs. 2 and 5 show t-he rollin the groove. Owing tothe decided curve in the cam-groove a downward motion is given to the roll as the cyclometer passes the fork, such motion ol' course causing the lever F to swing down and partially rotate the shaft D, thus actuating the mechanism within the cyclometer and causing the revolution ofthe wheel to be registered. Thus it will be seen that the operation ot the cyclometer is positive without regard to the speed at which the vehicle is being propelled, and this is the principal advantage which it possesses over the cyclometers generally in use, which depend upon gravity to operate them, and which often, when the wheel is revolving at a high speed, fail to register, owing to the power of gravity being counteraeted or overcome by the centrifugal force acting upon the weights or pendulnms or other depending parts. The shaft G, to which the lever F is fast, extends through the casing and is squared (see Fig. et) to receive the lever lfLwhich, when the lever F is moved, moves with it, and by bearing against a projection, f, on the bellcrank lever l, pivoted atg to the casing of the cyclomcter, moves said lever on its pivot g, and by means ofthe pawl .l moves the ratchet-wheel K forward one tooth. A pinion, L, is fast to the same shaft K as the ratchet-wheel li, and meshes into a gear-wheel,l\jl, having the proper relative number of teeth to cause the index` IOO hand N 011 the dial N to make one revolution when the bicycle-wheel has made revolutions enough to cover one mile. By means of the suitable pawls and ratehets, O P RS T U V NV, the face of the cyclometer is allowed to register/units, tens, hundreds, and thousands of x,m'iles. This mechanism not being novel in this invention,I will not describe it more particularly.

This cyclometer is particularly dust-proof, for the reason that there is but one opening through the case-viz., that through which the shaft G passesand this opening is nearly filled by said shaft and may be tightly closed, if desired,by pressing the shoulder of the shaft against the edge by means of a spring. If desired, the position of the cyclometer and cam may be reversed, the cyclometer being placed on the fork, and the cam on a spoke or hub of the wheel. The roller F is not essential to the working of the device, but merely facilitates it.

In attaching the device to a tricycle the cyelometer would probably be secured to the iixed axle outside the wheel, and the cam to the hub ofthe Wheel, or vice versa.

In the modilication shown in Figs. 6 and 7, the clip E is provided with an inclined cam instead of a grooved one, thus necessitating the use of a spring, i, inside the case to return the levers F,II, and I.

I do not eonne myself to the shape of the cam shown in the drawings, as it may be somewhat varied and still be practical.

This cyclometer is light, easily attached and read, out ofthe Way of the lamp, not liable to be struck by flying mud, as it can be placed upon any part of a spoke,and, by modi ications of the clamp and cam, may be attached to various parts of a bicycle or trieycle.

Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-'- l. A cyclometer for bicycles and other velocipedes, adapted to be rigidly secured to one Vof the spokes of the driving-Wheel and provided With an arm or lever connected with the registering mechanism thereof, in combination with a cam secured to thc fork or frame, said arm or lever being adapted to be engaged by said cam when the cyclometer passes the fork during its revolution, substantially as and for the purpose set forth.

2. A cyclometer for bicycles and other velocipedes, adapted to be secured to one of the spokes of the driving-wheel and provided with the arm or lever F, connected with the registering mechanism thereof, in combina-v tion with the curved cam-clip E E,seeured to the fork or frame, substantially as and forthe purpose described.

3. The combination,with the casi ng or box of the cyclometer, of a clamp or bracket for securing the same to the spokes ofthe wheel of a bicycle or other velocipede, said clamp or bracket extending transversely over or across two or more of said spokes for the purpose ol' retaining the cyclometer on the same plane as the Wheel, substantially as and for the purpose set forth.

CHARLES II. LAMSON.

Witnesses:

FRED W. PALMER, LYNN BUCKLEY.

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