US406661A - Bicycle - Google Patents

Description

(No Model.)

E. MOHRIG.

BICYCLE. No. 406,661. Patented July 9; 1889.

' UNITED STATES:

PATENT OFFICE.

EDWIN MOHRIG, or SAN FRANCISCO, CALIFORNIA.

BICYCLE.

SPECIFICATION forming part of Letters Patent No. 406,661, dated July 9, 1889.

Application filed November 22, 1888. Serial No. 291,595. (No model.)

To all whom it may concern:

Be it known that I, EDWIN MoHRIG, of the city and county of San Francisco, State of California, have invented an Improvement in Bicycles; and I hereby declare the following to be a full, clear, and exact description of the same.

My invention relates to certain improve ments in bicycles; and it consists in jointing or connecting the front and rear portions of the frame and thelowerend of the'seat-standard, and in the connection with the front and rear portions of the frame of an elastic spring, whereby an independent vertical movement of the wheels is allowed, and in certain details of construction, all of which will be more fully explained by reference to the accompanying drawings, in which Figure l is a side elevation of my machine. Fig. 2 is a plan view showing the joint by which the front portion of the frame orperoh is connected with the seat-standard, and showing the portion of the frame extending thence to the rear-wheel axle.

The object of my invention is to joint the frame of the bicycle and to connect the jointed parts together by a spring or elastic union, so that the weight of the rider will be supported at the point of union, and by means of a spring suitably disposed at this point both front and rear wheels are at liberty to rise and fall independent of each other and of the Weight of the rider when passing over irregularities or obstructions.

A is the front and B the rear wheel of the bicycle.

O is the front fork, between the lower ends of which the front wheel is journaled in the usual manner, and D isthe upwardly-extending steering-post, having the handle-bars E adjustably attached thereto.

F is the porch or frame, which is suitably hinged to 'or connected with the steering-post D, as shown at G. In the present case this perch is shown as curving downward, following approximately the line of the front wheel to a point below the center of the wheels, where it is bent backward and divided or forked, the two forks being shown plainly at H.

I is the seat-standard, the lower end of which is forked, as shown. at J, these forks being spread somewhat wider than the forks I-I, so that the latter may pass insideof the forks J and be pivoted thereto by means of a bolt or pin at K. I

L is the crank-shaft, which extends across I from the two sides of the forks J, being journaled therein with any suitable or desirable forms of bearing in the usual manner. The lower ends of the forks J have thehorizont-al or T-headed extensions M, which serve for the l attachment of the coiled springs N, which springs are securely fastened to the bottoms of the extensions M by clip-bolts P or by other suitable fastenings. From this point the springs extend backward, as shown at Q, in an approximately straight line, and their rear ends are fitted to receive the rear-wheel shaft R, which is secured in these ends by nuts or in any suitable or desirable manner, the bearin'gs for the wheel being made, as before described, in any of the usual forms of construction. It will be manifest that the extensions Q form apart of the rear frame, and are thus extended for convenience in manufacture. From these rear ends braces S extend upwardly to some pointon the seat-standard I, where they are connected with it. These braces form a part of the rear frame and hold the rear wheel rigid so far as any rocking or side motion is concerned, and the only motion that takes place between the two wheels is a vertical one, the movement being about the joint or connection K. v

The operation of my machine will then be as follows: The weight of the rider upon the seat-standard I depresses the joint K somewhat until the strength of the springN is sufficient to resist any further depression by reason of the attachment of thespring to the rear end of the perch F at the point 0. It will be seen that any roughness, obstruction,

or impediment in the road will be surmounted by the front wheel, the elasticity of the coil N allowing the front wheel to rise, while the weight of the rider is supported upon the joint about which this motion takes place. WVhen the rear wheel passes over the same or any similar obstruction, it will be seen that the elasticity of the spring will be sufficient to allow this wheel to rise and relieve itself as it passes over the obstruction. extenddireetly from the steering-post tothe rear-wheel axle, in which case the saddle-post would pass loosely through a guide upon the perch and its lower end be supported on the cQiLspring, as above described, the ends of the spring extendingto the perch and the rear axle. In this case the vertical movement of the front wheel would take place about the rear axle, the seat-support being independent, as before. It will be manifest that this constrnction is equally applicable to the frames of tricycles, and will act in the same manner when so applied.

Having thus described myinvention, what I claim as new, and desire to secure by Letters Patent, is

1. In a bicycle, the front perch or frame and the seat-standard having the lower ends united upon a movable pivot, in combination with a spring or springs supporting said joint and connecting the rear axle or the frame thereof with the front frame, substantially as herein described.

The perch F may 7 2. In a bicycle, the front frame or perch and the rear frame having the movable joint or union at thei r pointof meeting, the crank-shaft journaled in the lower end of the seat-standard, the chain pulleys, and chain whereby power is transmitted from the crank-shaft t0 the rear wheel, in combination with an intermediate spring or springs forming a connection with the front'fraine or perch and the rear frame or wheel axle, substantially as herein described. r

3. In abicycle, the front and rear wheels and frames within which the wheels are journaled and by which the machine is guided, a seatstandard the lower end of which is connected by a movable joint with the front frame or perch, a spring or springs secured to the-lower ends of the seat-standard and connected, re-

EDWIN MOHRIG.

WVitnesses:

s. H. NOUR-SE, H. 0. LEE.

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