US633605A - Back-pedaling brake. - Google Patents

Description

No. 633,605. Patented Sept. 26, I899. J. F. McANULT'Y & P. VAN DEN BEBGHE.

BACK PEDALING BRAKE.

(Applicnticn filed Mar. 15, 1898.)

(No Model.)

UNITED STATES PATENT OEErcE.

JOHN F. MCANULTY AND PETER VAN DEN BERGIIE, OF PHILADELPHIA,

PENNSYLVANIA; SAID MOAN ULTY ASSIGNOR, BY MESNE ASSIGN- MENTS, OF ONE-HALF TO MICHAEL S. LEY, OF SAME PLACE.

BACK-PEDALING BRAKE.

SPECIFICATION forming part of Letters Patent No. 633,605, dated September 26, 1899.

Application filed March 18, 1898. Serial No. 674,307. (No model.)

To (all whom it may CON/0677b.

Be it known that we, JOHN F. MOANULTY and PETER VAN DEN BERGHE, citizens of the United States, residing in the cityand county of Philadelphia, State of Pennsylvania, have invented a new and useful Improvement in Bicycles, which improvement is fully set forth in the following specification and accompanying drawings.

Our invention relates to bicycles; and it consists of an improved construction of attachments therefor whereby we are enabled to permit the forward movement of the bicycle to continue while the pedals and crankaxle remain stationary.

It also consists of an improved construction of braking device which is automatically applied during the act of back-pedaling.

It further consists of novel details of construction, all as will be hereinafter fully set forth, and particularly pointed out in the claims.

Figure 1 represents a side elevation of attachments fora bicycle embodying our invention, certain portions thereof being shown in section. Fig. 2 represents a section on line :0 50, Fig. 1. Fig. 3 represents a plan View, partly in section, of a portion of the rear axle seen at the left of Fig. 1, showing a different manner of applying a dog or pawl thereto from that seen in Fig. 1. Fig. represents a perspective view of a shell or casing adapted to inclose a portion of the crankaXle, showing also a dog or a pawl employed in detached position and the means for holding the same in position. Fig. 5 represents a side elevation, partly in section, showing a modified construction of pawl and the manner of attaching the same to the crank-shaft.

Similar letters of reference indicate corresponding parts in the figures.

Referring to the drawings, A designates the journal of a hub B of a bicycle, said hub having a recess 0 located near the end thereof, in which recess is mounted an extremity of the dog D, the nose of which latter is adapted to engage the internal teeth or serrations E of the small sprocket-wheel F, which is loosely mounted on said hub, the larger sprocketwheel 11 being mounted on the crank-axle G and power being transmitted from the larger to the smaller wheel byasprocket-chain (not shown) or other means. The crank-axle G is provided with cranks and pedals of the usual construction and has mounted thereon the toothed disk or ratchet-wheel J, the teeth of which are adapted to be engaged by the nose of the pawl K, which latter has the tongue L, mounted in the recess M of the casing N, which has a cut-out portion P, adapted to receive the dog K at intervals, as will be explained. The casing N is contained within the portion Q of the bicycle-frame and is provided with a recess R, adapted to receive the portion S of the bar T, one of whose extremities engages the brake-shoe U, which is adapted to cont-act with the tire V of the wheel \V.

The brake-shoe U is attached to the plate X, which latter has a downwardly-deflected portion Y, which joins the forwardly-extending member Z, which has a slot A therein, through which passes the bolt B, which engages the portion Q.

The bar T passes through the cross-piece O, which connects the braces D, which extend rearwardly from the portion Q of the bicycle-frame.

E designates a spring interposed between the cross-piece O and the member Y, which depends from the plate X.

In Fig. 5 we show a modified manner of attaching the pawl to the crank-axle from that shown in Fig. 1, in which G designates the crank-axle, as before, but having therein the recess G, in which is pivoted the pawl H, it being evident that when the axle G is rotated in the direction of the arrow seen in Fig. 5, the pawl will not engage the bar S, but in the action of back-pedaling the pawl would ongage the bar S, as seen in said Fig. 5, and the brake will be applied, as will be explained in detail hereinafter.

In'Fig. 3 we have shown the dog D in the position it assumes when the hub B has made a half-revolution from the position seen in Fig. 1.

In Fig. tthe portion L of the dog K is held in position in the recess M by means of the plugs M which are inserted in each extremity of the recess M and then headed or upset, whereby the portion L is positively held in position in the casing N.

The operation is as follows: \Vhen the sprocket-wheels F and H are revolving in the direction indicated by the arrows in full lines, it will be evident that the engagement of the pawl or dog D with the teeth E will cause the hub B, and consequently the wheel V, to revolve, and when the rotation of the wheel is checked or becomes stationary, which may be effected by the rider holding the pedals and crank-shaft G stationary, it will be seen that the rotation of the hub B can readilycontinue, since the nose of the pawl D will ride over the teeth E by reason of the inclination of the latter. When the sprocket-wheel H is rotated in the direction of the arrow seen in full lines, the pawl or dog K will not engage the teeth of the ratchet-wheel J, but will ride freely over the same. When, however, the rider begins to back-pedal or to rotate the wheel H in the direction of the dotted arrow, the dog K will interlock with a tooth of the ratchet-wheel, thus moving the bar T rearwardly, so that the shoe U contacts with the tire V, the spring E causing said shoe to normally assume its proper position and said shoe being guided and supported by the slotted member Z. When the bicycle is being propelled forwardly, the dog K is normally thrown into the recess P, and it will be evident that by securing said dog to the casing N in the manner described said casing is not unduly weakened.

Having thus described our invention, what we claim as new, and desire to secure by Letters Patent, is-

1. In an attachment for bicycles, a crankshaft, a ratchet-wheel mounted thereon, a case ing inclosing said ratchet-wheel and having a pivoted dog or pawl mounted therein, a bar adapted to enter a recess in said casing, a brake-shoe attached to said bar and a plate suitably secured to said brake-shoe and adapted to guide the same, said plate having a slot therein, and a bolt passing through said slot and engaging a portion of a bicycle-frame.

2. In an attachment for bicycles, a crankshaft having a ratchet-wheel mounted thereon, a casing inclosing said ratchet-wheel and having a pivoted dog or pawl mounted there in, a recess in said casing for the reception of a portion of said dog,and within which such portion of the dog is secured, a bar adapted to enter a recess in said casing, a brake-shoe attached to said bar, a plate projecting forwardly, then downwardly, thence forwardly from said brake-shoe, the last-mentioned portion of said plate having a slot therein, a bolt passing through said slot and engaging a portion of the bicycle-frame, and a spring interposed between a portion of said plate and a cross-bar of said frame.

JOHN F. MOANULTY. PETER VAN DEN BERGHE.

tVitnesses:

JOHN A. WIEDERSHEIM, WM. 0. WIEDERSHEIM.

Corrections in Letters Patent No. 633,605.

It is hereby certified that Letters Patent No. 638,605, granted September 26, 1899, upon the application of John F. McAnulty and Peter Van den Berghe, of Philadelphia, Pennsylvania, for an improvement in Back Pedaling Brakes, was erroneously issued i to John F. McAnulty, Michael S. Ley and Peter Van den Berghe, as joint owners of i said invention; whereas the patent should have been granted to said Michael S. Ley and Peter Van den Berghe, they being sole owners of the entire interest as shown by the assignments of record in the Patent Ofiice; also that the Words one-half in line i seven of the grant, and in the heading to the printed specification should be stricken out; and that the said Letters Patent should be read with these corrections therein that the same may conform to the record of the case in the Patent Oflice.

t Signed, countersigned, and sealed this 10th day of October, A. 1)., 1899. WEBSTER DAVIS,

[SEAL] Assistant Secretary of the Interior. E Oountersigned:

l O. H. DUELL, Commissioner of Patents.

Images