US622006A

US622006A - of same place

Info

Publication number: US622006A
Authority: US
Publication date: 1899-03-28
Anticipated expiration: 1916-03-28

Description

No. 622,006. Patented Mar. 28, 1899.

A. JEROME.

REAR FORK END FDR CYCLES.

(Application filed Nov, 7, 1898.)

(No Model.)

INI'rEn TATES.

PATENT FFICE.

ANTHONY JEROME, OF CHICAGO, ILLINOIS, ASSIGNOR TO THEA. FEATHER sToNE & COMPANY, or SAME PLACE.

REAR-FORK END FOR CYCLES;

SPECIFICATION forming part of Letters Patent No. 622,006, dated March 28, 1899.

Application filed November '7, 1898. Serial No. 6 96,788. (No model.)

To aZZ whom it may concern.-

Be it known that I, ANTHONY JEROME, a citizen of the United States, residing at Ohicago, in the county of Cook and State of Illi nois, have invented certain new and useful Improvements in Rear-Fork Ends for Cycles; and I do hereby declare the following to be a full, clear, and exact description of the same, reference being bad to the accompanying 1o drawings, forming apart of this specification.

The present invention relates to a fitting for connecting together the rear-fork tubes of bicycles and the like and affording a support for the axle of the rear wheel thereof.

[5 The object of the present improvement is to provide a simple andeflicient formation and arrangement of parts whereby a strong and durable junctionof the parts is effected in a ready, certain, and economical manner, as will hereinafter more fully appear and be more particularly pointed out inthe claims.

I attain such object by the construction of parts illustrated in the accompanying drawings, in which Figure l is an elevation of the inner side of the presentimproved fork end; Fig. 2, asimilar View of the outer side of the same; Fig. 3, an elevation of the flat connecting-plate member with the thimbles or sockets ends in b section at line m 00, Figs. 5 and 6; Fig. 4, an enlarged detail section at line as 00, Fig. 1;

Figs. 5 and 6, enlarged detail sections at lines a 00 and m 00 respectively, Fig. 1; and Fig. 7',

an enlarged detail section illustrating a modi- 3 5 fied form of the connecting or pivoted stud on the plate member and which has engagement in orifices in the thimbles or sockets.

Similar numerals of reference indicate like parts in the several views.

Referring to the drawings, 1 represents the connecting-plate of the present invention 'of a flat formation and formed with an open ended slot 2 for the axle, a pair of divergent prongs 3 and at, and pivot-

studs

5 and 6 at 5 the base of such divergent prongs.

In the present improvement each divergent prong will consistof an outer tongue portion 7 8 and semicircular base portion 9 10, the

pivot-

studs

5 and 6 having a concentric ar-- rangement with relation to the semicircular border of such base portions of the divergent prongs, the construction being such that the alinement of the parts is very perfectly preserved during the brazing operation, and in the case of the adjustable prong 3 the adjust- 5 5 ment thereof can be readily effected without danger of disturbing the concentric relation between the end of such prong and the semicircular base portion of the connecting-plate. The abutting ends of the prongs will also be preferably milled out to fit the convexity of such semicircular base portions of the connecting-plate for a more perfect attainment of the above-stated purpose.

In the preferred construction of the prescut improvement, as illustrated in the drawings, the tongue portion 7 of the upper prong will have tapering or wedge-shaped formation, as shown in Figs. 1 and3, so as to admit of a limiting rocking movement of the thimble that fits thereon in the process of assembling the parts previous to the brazing operation and in order to attain the proper adjustment of the thimbles with relation to each other in using the present fork end in con- 7 5 structing different heights of bicycle-frames. The other and lower tongue portion 8 will be of a straight or parallel edge formation, as shown, so as to snugly lit the interior of the thimble that is arranged thereon with little or no play.

The pivot or connecting

studs

5 and 6 maybe integrally formed with the connectingplate 1 during the process of stamping the same, as shown in' Fig. 4, or the same may be in the form of a separate stud 5, riveted in place in said plate, as shown in Fig. 7.

The thimbles or

sockets

11 and 12 of the present invention will preferably be made each in the form of a sheet-metal stamping, and will comprise an outer reduced attaching-neck 13 let and an enlarged base portion l5 16, a material part of the present inven tion being the formation of such thimbles of a tubular form, D-shaped in cross-section, as 5 shown in Figs. 5 and 6, in that the flat inner surface of thimbles so formed afiords alarge and effective surface upon which to braze the adjacent faces of the respective prongs 3 and t of the main connecting plate, and so afford a strong and substantial attachment of the parts.

In the present construction the prongs 3 and 4 have entrance into the interior of the respective thimbles through entrance-slits in the base portions of the same, which slits are milled out or otherwise formed in line with the flattened wall of the thimbles, as shown. The base portions 15 and 16 of said thimbles are preferably of a semiglobular shape, (illustrated in the drawings,) with their curved or semicircular margin concentric with the pivot or connecting studs, as affording a heater finish, and at the same time with any pivotal adjustment of the upper thimble oifer no interference with the application of the covering-plate that is commonly used in connection with the rear-fork ends of bicycles.

17 is a hole or orifice in the flat side of the thimbles, and which is adapted to engage the pivot or connecting studs on the connectingplate 1 to insure an initial proper position of the parts previous to and during the brazing operation.

The seam 18 of the sheet-metal stamping that forms the

thimbles

11 and 12 will usually be arranged centrally on the fiat portion or side thereof, as illustrated in Figs. 1, 5, and 6. Such seams may be arranged elsewhere, if found more convenient, without departing from the spirit of this part of my invention.

Having thus fully described my said in vention, what I claim as new, and desire to secure by Letters Patent, is-- 1. A rear-fork end for cycles, comprising a plate connection formed with a guide-slot for the axle, and with diverging prongs, and thimbles having a D shape in cross-section and the flat portions which are adapted to contact with the adjacent fiat surfaces of the prongs to afford extended brazing-surfaces and a substantial attachment between the parts, substantially as set forth.

eaooe 2. A rear-fork end for cycles, comprising a plate connection formed with a guide-slot for the axle and with diverging prongs one of which is of a taper formation, and thimbles having a D shape in cross-section and the flat portions which are adapted to contact with the adjacent fiat surfaces of the prongs to afford extended brazing-surfaces and a substantial attachment between the parts, substantially as set forth.

3. A rear fork for cycles, comprising a plate connection formed with a guide-slot for the axle and with diverging prongs, each comprising a tongue portion and a semicircular base and affording an abutment for the end of the thimble, and thimbles having a D shape in cross-section and the flat portions which are adapted to contact with the adjacent fiat surfaces of the prongs to afford extended brazing-surfaces and a substantial attachment between the parts, substantially as set forth.

4. A rear fork for cycles, comprising a plate connection formed with a guide-slot for the axle, and diverging prongs, each comprising a tongue portion, a semicircular base afford ing an abutment for the end of the thimble, and a centering-stud, and thimbles having a D shape in cross-section and provided with orifices to receive the centering-studs, the flat portions of the D shaped thimbles being adapted to contact with the adjacent flat surfaces of the prongs to afford extended brazing-surfaces and substantial attachments be 3 tween the parts substantially as set forth.

In testimony whereof witness my hand this 2d day of November, 1898.

ANTHONY JEROME.

In presence of- ROBERT BURNS, JAMns LAVALLIN.