US1203956A

US1203956A - Brake mechanism for vehicles.

Info

Publication number: US1203956A
Application number: US76502113A
Authority: US
Inventors: Giuseppe Sacco Albanese
Original assignee: ETHEL L NOBLE
Current assignee: ETHEL L NOBLE
Priority date: 1913-05-02
Filing date: 1913-05-02
Publication date: 1916-11-07
Anticipated expiration: 1933-11-07

Description

G. S. ALBANESE. BRAKE MECHANISM FOR VEHICLES.

APPLICATION FILED MAY 2. 1913- LZQ8 Q56B Patented Nov. 7, 1916.

2 SHEETS -SHEET I.

G. S, ALBANESE.

BRAKE MECHANISM FOR VEHICLES.

APPLICATION FILED MAY 2. 1913.

1 2% 956. Patented Nov. 7, 1916.

2 SHEETS-SHEET 2.

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GIUSEBPE SACCO ALIBAN ESE, 0F PARIS,FRANCE, ASSIGNOR T0 ETHEL L. NOBLE, OF

BROOKLYN, NEW YORK.

To all whom it may concern:

Be it known that I, GIUSEPPE SACCO AL- .BANESE, a subject of the King of GreatBritain and Ireland, residing at Paris, in the Republic of France, have invented new and useful Improvements in Brake Mechanism for Vehicles, of which the following is a specification.

This invention relates to brake mechanism or winches of a well known type useful for railway and tramway vehicles, such mechanism having a rotatable cylindrical winding drum or a specially constructed winding drum somewhat similar to a fusee having a helicoidal groove to receive the brake operating chain which is wound on the drum under a varying leverage. Usually this winding drum is provided with an external gear wheel which is driven by a pinion secured to the end of the brake staff.

It has also been previously proposed to employ a stop device for the purpose of preventing excessive unwinding of the chain from the drum. The device heretofore employed consists of a lug or tooth provided on the driven gear wheel, which lugengages another lug either provided on the driving pinion or on the stationary frame of the mechanism. The arrangementis such that when the drum makes almost a complete turn, the lugs strike againstone another and stop further turning movement of the drum in the direction for unwinding. According to this known construction a limited length of chain is unwound from the drum and the winding movement of the drum for applying the brakes is disadvantageously limited.

The object of the present invention is to provide an improved form of brake mechanism having the distinctive useful features of novelty; firstly, that the winding drum is so supported that driving gearing of the desired ratio may readily be adopted; and secondly, that excessive unwinding of the chain, thus causing undesired slackness in the same, is effectually prevented, while the winding movement of the drum is not restricted by the device which limits the unwinding movement.

Tn accordance with the invention the mechanism comprises a body portion provided with means for attaching the same on or under the flooring of the platform. The winding drum is supported by the body portion independently of the driving gear Specification of Letters Patent.

. portion.

BRAKE MECHANISM FOR VEHICLES.

Patented Nov. 7,. late. Serial No. 765,021.

which is detachably supported by the bodv Still in accordance with the iiivention, a clutch device or arrangement of stops is provided for limiting the turning movement of the drum in one direction of travel only, this device consisting of a stop or.pro ection permanently stationary with the body portion of the mechanism, .1: fixed stop carried by the drum'and an intermediate rotating ring member having a lug projecting from the periphery of the ring.

A form or forms of brake mechanism em bodying the invention willbe hereinaftermore fully described with .reference to the accompanying drawings, in which Figures 1, 2 and 3 are, respectively, a side, front. and rear elevation of the improved mechanism; Fig. -l is a rear elevation of the same showing the winding drum removed; Fig. 5 is a vertical section showing part of the yoke or frame broken away; Figs. 5 and 5 are detail sectional views of the means for mounting the driving pinion, Fig. 5 being taken on the line a m of Fig. 5, and Fig. 5 illustrates a modification; Fig. 6 is a detail plan view of the gearing; Fig. 7 is a detail plan view showing a modified manner of attaching the mechanism to the car platform flooring; Figs. 8, 9 and 10 are detail views showing diagrammatically the different positions of the stops employed for limiting the unwinding movement of the drum, and Fig. 11 is a perspective view.

showing the parts of the said device in a disassembled condition.

Referring to the drawings. A is the body portion of the mechanism consisting mainly of the yoke B open at the front end to allow clear passage of the brake chain.

C is a plate or member provided with lugs D carried by the body portion, which lugs are adapted to register with lugs D of yoke B and thus provide means whereby the said plate can be detachably secured to the yoke and for attaching the latter member to the car flooring I. Pinion E is supported by the plate L and this pinion meshes with internal gearing F provided in the hollow crown portion of the winding drum T. The pinion E is providedwith a socket which receives the squared end of the brake staff 0,

the movement of which brake statf is retardportion which provides a bearing for the helicoidal groove to receive the chain which is attachedto the drum by means of the pin H. The drum T is supported on a vertical axis consisting of a stud shaft Gr firmly supported at the lower end or base of the yoke 13. The drum is merely dropped in place and rotates freely on the stud shaft, and the hole Z provides means for lubricatiom \Vith the improved construction, the brake mechanism can readily be assembled and attached to il e underside of the car flooring in different positions according to the requirements. In assembling the mechanism, first of all the brake drum, with one end of-the chain attached thereto, isdropped" on to the stud and then the plate C with the pinion is placed in position, and the complete mechanism can then be attached to the car flooring by means of the lugs ,D and D. The brake staff is then inserted into'the socket and supported in the usual manner.

In Fig. 5? a modified means of attaching the pinion is shown. In this instance the plate I is formed integral with the hub of the pinion wheel and serves as a shoulder and the squared end L of the hub receives the pinion E which is secured by means of a pin tosaidhub.

The hollow interior of the crown portion having the internal gearing, is entirely free of parts of the' mechanism, thereby permitting of the employment of'pinion wheels of various sizes so as to obtain any practicable ratio of transmission required for rotating the drum which is made of a standard size. The plate C carrying thepinion can be readily attached to the body portion of the mechanism and this feature has considerable advantage over the constructions hereinbefore proposed as regards facility in changing the gearing.

The other part of my invention relates to the means for restricting the unwinding inovement of the drum, as shown more clearly in Figs. 8, 9, 10, and 11, and. reference is now made to these figures. The

lower extremity of the winding drum T is provided with an annular groove T broken by a stop 1. The base of the yoke B is provided with a circular seat B having locking projections which engage similar projections on a ring E the purpose of this arrangement being to permit adjustment, or in such instances where adjustment is not required, the ring B can be dispensed with and in this instance the lug or stop 3 carried by the said ring would form an integral part of the base of the yoke. An intermediate ring or washer B is provided with'a' lug 2 projecting from the periphery thereof. It will be understood that when the lug 1 meets the lug 3 in either direction of travel, the unwinding or winding movement of the drum would be limited accordingly, but by provision of the intermediate member, having the engaging lug 2, amplified movement of the drum is permitted, for the lug car ried by this member is so arranged that the lugs 1 and 3 are engaged without the limiting effect being produced when the drum is rotatedin the direction for unwinding. Figs. 8, 9, and 10 show the operation of this arrangement of the stops. In the first position (Fig. 8) the drum may be wound in the direction of the arrow to wind the chain and with the parts in the position illustrated, the, lug 3 rests on the lug 2 -and the 'lug' 2 meets the stop 1. If the brake drum is then turned to wind the chain, that is in the direction of the arrow, the lug 1' makes almost acomplete revolution and then again meets the lug 3, as shown in Fig. 9. In this position the movement of the drum is not limited, for as the lug 2 is thicker than the ring or washer, the lug 1 drives the lug 2 in front of it. The drum will only be stopped when the lugs reach the position in. Fig. 10, in which position, the lug 2 has met'lug 3, and the lug 1 is in a position for the free rotation of the drum in the direction for unwinding the chain. As previously stated thearrangement of stops. may be made adjustable and forfthis purpose the ring B carrying with it-the stop 3, may be placed at various angles relatively to the stop 1. This stop may be made of different thick ness so as.to limit the unwinding move ment accordingly.

In general practice the brake mechanism is mounted underneath the platform-in the position shown in dotted lines (Fig. 7), and the brake stafl and operating handle are carried within the platform. In such instances where space is limited on the platform, the brake mechanism is mounted as illustrated partly in' full lines in Fig. 7. In this instance, the brake shaft and operating handle and part of the mechanism are carried outside the dashboard M, a suitable bracket'M being provided to support the brake mechanism and operating devices.

It will be understood that the improvements hereinbefore detcribed'may be separately or jointly. employed with brake mchanismsliaving either acylindrical or a tapering winding drum. i

I claim:.

1. In a brake mechanism, a winding drum supported on a seating provided by the base of a body portion and means consisting of a stop on the lower extremity of the drum engaging a stop on said seating and an intermediate loose ring having a lug for limiting the unwinding movement of the winding drum.

2. In a bralre nri'echanism the combination of a body portion supporting a Winding.

drum mounted on a stud shaft, internal gearing and a pinion provided Within the hollow. crown of the Winding drum for driving the same and means consisting-of a body portion for limiting theunwinding movement of the Winding drum.

3. In a brake mechanism, the combination, of abody portion supporting a' Winding drum mounted on a stud shaft, means for driving said drum which include an internal. gearing provided Within. the hollow crown of the drum and a pinioncarried by a plate secured to the body portion and means for limiting the unwinding movement of the drum consisting of a stop provided on the lower egtremityof the Winding drum Which stop engages a lug provided on a ringavhich is free to rotate on the said stud shaft and which lug engages'a stop provided on the body portion of the brake mechanism.

In testimony whereof I have hereunto set my hand in the presence of the subscribing, Witnesses, on this 19th day of April A. 1).,

GIUSEPPE siioco ALBANESE.

Witnesses WERNER HILDEBRAND, LUcIEN MEMMINGER.