US321508A - Bicycle - Google Patents

Description

(No Model.) 2 Sheets-Sheet 1.

E. G. LATTA.

BICYCLE.

Patented July 7, 1885.

2 Sheets-Sheet 2,

(No Model.)

BICYCLE.

UNITED STATES Parenti @erica 1 EMMT G. LATTA, OF FRIENDSHIP, NEV YORK.

BICYCLE.

.'PCFICATION forming part of Letters Patent No. 321,508, dated Jnly 7, 1885.

Application filed December l0, 1884. (No model.;

To @ZZ whom it may concern;

Be it known that I, EMMIT G. LATTA, a citizen of the United States, residing at Friendship, in the county of Allegany and State of New York, have invented new and useful Iu1- provenients in Bicycles, of which the following is a speciiication.

This invention relates to certain improvements in bicycles; and it has for its object to secure a bent handle-bar, made in one piece, to the steering-head, so that it can be readily reinoved or replaced when desired; also, in securing the cranks to the axle in such manner that the cranks can be readily detached without requiring any special tools for the purpose.

Theinvention also relates to certaininiprovements in the construction of the pedals, Whereby they can loe readily adjusted for wear.

The invention consists, to these ends, oi' the improvements which will be hereinafter fully set forth, and pointed ont in the claims.

In the accompanying drawings, consisting of two sheets, Figure 1 is a Vertical longitndinal section of the steering-head. Fig. 2 is a vertical section in line a; m, Fig. l.. Figs. 3 and 4 are horizontal sections in lines 1/ y and e e, Fig. i, respectively. Fig. 5 is a side elevation of the handle-bar lug. Fig. G is a plan View, and Fie. 7 a side elevation, of the spaceblock, whereby the handle-bar is secured in the lnO. Fig. 8 is a top plan View of the handle-bar on a reduced scale. Fig. 9 is a sectional elevation of one end of the axle and connecting parts, and of the crank and pedal. Fig. l() is a sectional elevation in line x rv, Fig. 9. Fig. 1l is a horizontal section in line .fr x, Fig. 10. Fig. l2 is a sectional elevation in line y y, Fig. 9. Fig. 13 is a vertical section in line f: s, Fig. 9. Fig. .le is a sectional elevation of one end of the axle and crank.

Like letters et' reference refer to like parts in the several iignrcs.

A represents the backbone or reach of the machine, provided at its front end with the usual upright center pin, a.

B represents the steering-'head inclosing the center pin, (c, and provided with a centcrloearing, Z), in which the lower end of the center pin is supported.

G represents a screw-cap, which ts over the upper end of the center pin, a, and is secured in a threaded opening in thenpper part of the steering-head B.

c is an oil-passage l'orlncd cent-rally in the cap C.

D represents the handle-bar lug, composed of a collar, d, which surrounds the upper portion of the steering-head, and a horizontal sleeve or lug, d', through which the handlebar E is inserted, and which is ar an ged transversely in front of the collar d.. The latter is preferably made tapering upwardly, and is secured in the steering-head by a screw-nut, dt. The handlebar E is provided on both sides of the lug d' with bent portions, which are made in one piece with the portion which is seated in the lug d', as represented in Fig. 8, so that the handlehar cannotbe passed through the ordinary cylindrical opening usually formed in the handle-bar lng. In order to perniit this bent handlebar to be passed through the opening of the handlebar lng, this opening is extended backwardl y into the sleeve or collar (l, and made ol' suiiieient size to permit the bent handle-bar to pass through it.

F represents a space-block which is placed in the opening e, for the purpose ol' securing the handle-bar in the saine. The block F is provided on its front side with a concave face, f, which iits against the rear side of the handle-bar in thelug d". The front portion of the block F, in which the i'ace fis formed, iills that portion ol' the opening e in the lug d which is not occupied by the handle-bar.

r/ represents an open l'ranie or socket fornied in the rear side of the block F to surround the upper portion, g, ol the steering-head B. The socket f/ and the portion g of the steeringhead are preferably ilattcned on one or more sides, in order to prevent the sleeve d from turning on the steering-head when the rider pulls on the handle-bar.

In putting the parts together the handlebar E is rst Apassed through the opening c; the 4block F is then placed in the opening e against the handle bar, and the sleeve d, with these parts attached thereto, is placed on the portion g of the head B, and secured in place by the nut d?. The portion g is inade tapering up- Wardly, and iu forcing the lug D downward onY the head E the block F is pressed against IOC) the handle-bar, so that a snug t of these parts is obtained'and the handle-bar securely held when the parts arecarefully fitted.

In order to prevent the possibility of the handle-bar working loose in the lug d', the bar is further secured by a set-screw, h,- and by forming several screw-holes in the handle-bar at various angles, the handle-bar can be se cured in various positions.

If desired, the handle-bar lug may be made in one piece with the head B, in the usual manner, and the opening c be formed in the upper part of the head, instead of in a separate piece; but I prefer the construction shown, as it permits the use of a tubular dust-shield, H, and is otherwise more desirable.

K represents the tubular axle, and I the crank fitted on the end of the axle and held thereon against turning by a key, 7c, or by constructing the end of the axle and the opening i in the crank with flattened sides. The outer portion, fi', ofthe opening or socket l is reduced in diameter by an inwardly-projecting ring, 122, formed in the crank, and having its rear or inner side made conical or curved to fit snugly against the concave outer end of the axle, as represented in Figs. 9 and 14. The ring i2 is .provided with an internal screw-thread extending through its opening, the latter being made sufficiently long to prevent stripping of the screw-thread. The screw-th read in the ring '2 is made to fit the threaded end of the pedal-pin, or any other screw that can be readily detached from the machine and used for detaching the crank from the axle by screwing such screw into the ring 2 against the outer end of the axle, thereby forcing the crank outward and from the axle. The cone or ring i2 increases the bearing-surface of the crank on the end of the axle. The keyway in which the key 7c is seated extends to the outside of the crank through the ring 2.

J represents a screw-bolt, which is screwed into the end of the hollow axle, and provided with a broad head, j, which covers the end of the key k, and prevents the latter from working out and the crank from becoming loose. This screw also serves to strengthen the outer portion of the tubular axle at the point of greatest strain.

L represents the pedal-shaft, provided at its rear end with a screw, Z,- and M is asleeve surrounding the shaft L, and provided at its inner end with a head, m, which is tted with its recessed sides m between the bifurcated end I of the crank. The pedal-shaft is secured in position on the crank by a locknut, M.

m2 represents the inner cone applied to the sleeve M, and m3 the outer cone formed on the shaft L.

M2 represents the pedal inclosing the shaft L and sleeve M, and formed with the cones m4 m5.

m represents the balls interposed between the cones.

Z represents a pin attached to the sleeve M, and projecting into a longitudinal groove, Z2,

formed in the inner end of the shaft L,whereby the latter is held against turning-in the sleeve M, and is permitted to move lengthwise in the same.

N represents an adjustable screw, provided with an internal thread, n,which engages with the screw l, and with an external thread, n', which engages with an internal thread formed in the head m. Thescrew-threads n n are made of differential pitch, wherebyavery ne adjustment of the pedal-shaft and cones is obtained. The screw N is provided with a milled head, n2, and locked in position after having been adjusted by a spring, n3, secured to the sleeve M, and bearing against the head n2. The spring as is preferably formed in one piece with the pin W, as represented in Figs. 9 and l0. The bifurcated portion I of the crank permits the introduction of the head of the pedal without disturbing the adjustment of the cones. This differential screw-adjusting device can be readily applied to pedal-shafts, as ordinarily constructed, by arranging the outer cone to slide on the outer end of the shaft and the screw, so that it forces it inwardly; but I prefer the construction herein shown and described, because it shortens the outer end of the pedal and reduces the entire width of the machine.

I claim as my invention- 1. rlhe combination,with a bent handle-bar, of ahand-le-bar lug having an elongated opening through which the bent handle-bar can be passed, and a fastening whereby the bent handle-bar is secured in said elongated opening, substantially as set forth. Y

2. rIhe combination, with the bent handlebar and a handle-bar lug having an elongated opening, of a space-block inserted in said opening and securing the handle-bar in the same, substantially as set forth.

3. rIhe combination, with the steering-head and a bent handle-bar, of a handle-bar sleeve provided with an elongated opening and a space-block having a socket which surrounds the steering-head, substantially as set forth.

4. The combination, with the steering-head B C and the sleeve D, provided with the elongated opening e, of the bent handle-bar E, space-block F, provided with socket g, and screw-nut d2, substantially as set forth. 5. The combination, with the axle having a dished or recessed end, of a crank fitted on the 'axle and provided in its socket with an inwardly-projecting ring fitting into the dished end of the axle, substantially as set forth.

6. rIhe combination,with the'axle, of a crank fitted on the axle and having the outer portion of its socket provided with an inwardly-projecting ring, '52, having an internal screwthread, substantially as set forth.

7. rlhe combination, with the axle, of the crank I, provided with a ring, i2, of a key, k, whereby the crank is held on the axle, and a screw, J ,whereby t-he crank and key are held on the axle, substantially as set forth.

8. Ihe combination,with the pedal-shaft and IOO IIO

11. The combination, with the pedal-shaft L, provided with screw Z, longitudinal groove 15 Z2, tand cone m3, of the sleeve M, provided with cone m2 and a. head, m, a. differential adjusting-screw, N, pin l', and spring n, substantially as set forth.

-Vl-Titness my hand this 2d day of December, 2o 1884.

EMMIT G. LATTA.

Witnesses F. B. CHURCH, S. E. LATTA.

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