US641972A

US641972A - Car-brake.

Info

Publication number: US641972A
Application number: US69736698A
Authority: US
Inventors: Philip S Kingsland
Original assignee: KINGSLAND FRICTION CAR BRAKE Co
Current assignee: KINGSLAND FRICTION CAR BRAKE Co
Priority date: 1898-11-25
Filing date: 1898-11-25
Publication date: 1900-01-23
Anticipated expiration: 1917-01-23

Description

N0. 64|,972. Patented Jan. 23, |900. P.` S. KINGSLAND.

CAR BRAKE.

(Application led Nov. 25, 1898.) (No Model.) 2 Shet$Sheet I.

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gli; E l Il 90 1mm Q v V a No. 64|,972. Patented 1an. 23, |900. P. 8. KINGSLAND.

CAR BRAKE (Application led Nov. 25, 1898.)

(No Model.)

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UNITED STATES PATENT OFFICE.

PHILIP S. KINGSLAND, OF ST. LOUIS, MISSOURI, ASSIGNOR TO THE KINGS- LAND FRIOTION CAR BRAKE COMPANY, OF SAME PLACE.

CAR-BRAKE.

srEcIFIcATIoN forming part of Letters Patent No. 641,972, dated January 23, 1906. Application filed November 25, 1898. Serial No. 697,366. (No model.)

To all wton/t t may concern.-

Beit known that I, PHILIP S. KINGSLAND, a citizen of the United States, residing at the city of St. Louis, in the State of Missouri, have invented cert-ain new and useful Improvements in Oar-Brakes, of which the following is afull, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification.

The object of my invention is to provide a brake especially adapted for use on rapidrunning cars, the construction comprising a friction disk or collar applied to the car-axle and shoes of peculiar construction arranged to operate in frictional contact With said disk or collar. The construction also contains means through which the brakes may be applied from either end of the car.

My invention consists in features of novelty hereinafter fully described, and pointed out in the claims.

Figure I is a top or plan view of my improved brake. Fig. II is a view, partly in section, taken on the line II II, Fig. I, looking in the direction of the arrow shown at said line, and partly in elevation. Fig. III is an enlarged perspective view of one of the master-Wheels and the brake-shoe and connections. Fig. IV is an enlarged detail View of the inner face of one of the master-wheels. Fig. Vis a detail side view of one of the friction-collars removed. Fig. VI is a view in elevation of one of the master-wheels and a portion of its axle and illustrating the friction-collar and brake-shoe in cross-section. Fig. VII is a detail side view of one ofthe lower brake-shoes. Fig. VIII is a side View of one of the frames or cradles in which the lower brake-shoes are supported. Fig. IX is a sectional view taken on line IX IX, Fig.VIII.

1 designates the frame of a car-truck, which may be of any ordinary construction, and 2 and 3 are outer and inner cross-bars respectively mounted on said frame.

4 is the main car-axle, and 5 are the master car-wheels on said axle. The Wheels 5 are provided with sleeves 6, projecting from the inner faces of the wheels and surrounding the main axle 4. The sleeves 6 are provided with radial grooves 7 (see Fig. IV) and intermediate dovetail tenons 8 between the grooves.

9 designates the friction disks or collars that are fitted to the sleeves 6 and are formed with radial tongues 10, that fit into the grooves 7of said sleeves. Intermediate of the tongues 55 10 are dovetail channels 11, that receive the tenons S of the sleeves 6. The disks or collars 9 are preferably sectional, as illustrated in Fig. V, in order that they may be readily applied to the sleeves 6 while the wheels are 6o upon their axle, and the disks or collars are formed with peripheral grooves 9a of V shape.

12 is a face-plate or disk lying against the inner side of each friction collar or disk, through which screws or bolts 13 (see Fig. III) 65 are inserted and passed through holes 9b in the collars or disks and into corresponding holes 5a in the oar-wheels 5 to secure said disks or collars in position on the sleeves 6.

14 designates brackets mounted on the cross- 7o bar 2, to which right and left screwthreaded links 15, provided with turnbuckles or sleeves 16, are pivotally suspended.

17 designates a segmental shoe-holding frame or cradle, one end of which is provided with an eye 18, (see Fig. VIII,) that is pivotally joined to said link 15. The frame 17 is composed of two upper curved rods 19 and a lower curved rod 20, that are all joined at their ends by connecting-plates 21, thereby 8o forming a pocket between said rods and plates. 22 is a hook secured to the plate 21 at the opposite end of the cradle or frame from that provided with the eye 18.

23 designates main levers mounted in bear- 8 5 ings 24 on the cross-bar 3, to one end of which levers hook-links 25 are pivotally connected and which receive the hooks 22 of the cradles or frames 17. The opposite ends of the levers 23 are pivotally connected to arms 26, 9o carried by a rock-shaft 27, reference to which shaft will hereinafter be made. The frames or cradles 17 are adapted to receive brakeshoes 28, that seat and are held in the pockets of said frames. These brake-shoes are V-shaped in cross-section to conform to the grooves 9a in the peripheries of the friction disks or collars 9, and they are adapted to seat in said grooves when pressure is applied to them and by their frictional contact with roo the disks effect a braking operation. The shoes 28 are preferably made of sectional form, as shown in Fig. VII, this construction being adopted .for the purpose of lessening the amount of contraction and expansion in the entire shoe by reason of the alternate heat-ing and cooling of such shoes in use caused by frictional contact with the disks or collars in the operation of the brakes.

29 designates auxiliary levers, one end of each of which is pivoted in one of the brackets 14 and the opposite ends of which are pivotally connected to the levers 23 by links 30. Mounted on these levers 29 are brake-shoes 3l, that are V-shaped in cross-section and are designed to seat in the grooves 9"L of the friction-disks and serve as auxiliarybrake-shoes to those 28.

32 designates bell-crank levers pivotally mounted in bearings 33, carried by the crossbar 3. The ends 32 of these bell-crank levers are connected to the rock-shaft 27, so that said rock-shaft may be caused to partake of the movement of the bell-crank levers. The ends 32b have connected to them a connecting-rod 34, that at its opposite end is joined to an equalizer 35.

37 designates a brake-rod connected to the equalizer and leading to the pivoted lever 38, mounted in a bearing 39 on the under side of the car-platform A.

34 is a connecting-rod corresponding tothe first-named connecting-rod 34, and 37a. is a brake-rod corresponding to the first-named brake-rod 37. These rods are also connected to the equalizer and extend to the opposite end of the car to provide for the manipulation of the brake mechanism from said opposite end.

The lever 38 is provided at its upper end with a socket 38, (see Fig. IL) that receives the lower end of a hand-lever 40, thus permitting the ready insert-ion or withdrawal of said hand-lever in connection with said pivoted lever, so that the hand-lever may be readily removed to be transferred to the opposite end of the car and connected with the pivoted lever at that end when the direction of the car is reversed and the'operator alters his station on the car, as is the case where cars are run first one end and then the other end first. The hand-lever 40 is provided with a pawl 4l, that engages the ratchet-plate 42, mounted on the platform A, the pawl being operated by a pull-rod 43 and hand-grip 44.

In applying the brake-shoes to the friction disks or collars 9 the hand-lever 40 is manipulated to effect a pull on the rod 37, and this causes the equalizer' 35 to be rocked and impart motion to the connecting-rod 34. The movement of the rod 34 results in the bellcrank lever 32 being rocked, which throws the end 32a of said bell-crank lever downwardly, carrying the rock-shaft 27 in a corresponding direction.

In the movement of the rock-shaft the arms 26 on the rock-shaft are carried downwardly, drawing the outer end of the levers 23 with them and throwing the inner ends of said levers in an upward direction. The downward movement of the levers 23 also results in the levers 29 being carried downwardly. By this means the brake-shoes 28, carried in the frames 17, are brought upwardly into the grooves of the friction-disks 9 by reason of their link connection with the inner ends of the levers 23, and at the same time the shoes 3l are thrown downwardly into said grooves, and both shoes simultaneously effect a braking action by reason of their frictional contact with said disks. The reverse movement of the end lever operates the described parts in a reverse direction and frees the shoes 28 and 3l simultaneously from contact with the friction-disks.

While I have shown and described the friction disks or collars 9 as being attached to the car-wheels, which are, as usual, rigid on the axles, yet they may, if preferred, be attached to the axles so as to revolve therewith.

I claim as my inventionl. A car-brake comprising car-wheels, an axle, :friction -disks carried by the wheels, pivotally supported segmental brake shoe cradles, sectional brake-shoes loosely seated and detachably held in the cradles, and means for suspending the cradles from beneath the friction-disks and for lifting the cradles to carry the brake-sl1oes into frictional contact with the friction-disks; substantially as described.

2. A car-brake comprising. car-wheels, an axle, grooved friction-disks carried by the wheels, pivotally-supported segmental brakeshoe cradles, sectional brake-shoes loosely seated and detachably held in the cradles and adapted to fit in the grooved frictiondisks, and means for suspending the cradles from beneath the friction-disks and for lifting the cradles to carry the brake-shoes into frictional contact with the friction-disks; substantially as described.

3. A car-brake comprising car-wheels, an axle, friction-disks carried by the wheels, pivotally supported segmental brake shoe cradles, lower sectional brake-shoes loosely seated and detachably held in the cradles, means for suspending the cradles beneath the friction-disks and for lifting the cradles to carry the brake-shoes into frictional contact with the friction-disks, auxiliary upper brake shoes supported above the frictiondisks, and adapted to be thrown into contact with the friction-disks, and means for applying the upper brake -shoes simultaneously with the application of the lower brake-shoes substantially as described.

4. A car-brake comprising car-wheels, an axle, grooved friction-disks carried by the Wheels, pivotally-supported segmental brakeshoe cradles, sectional brake-shoes loosely seated and detachably held in the cradles and adapted to t in the grooved frictiondisks, means for suspending the cradles bcneath the friction-disks, and for lifting the cradles to carry the brake-shoes into frictional contact with the friction-disks, auxil- IOO iary upper brake-shoes supported above the friction-disks and adapted to be thrown into contact with the friction-disks, and means for applying the upper brake-shoes simultaneously with the application of the lower brake-shoes; substantially as described.

5. A car-brake comprising car-wheels, an axle, grooved friction-disks carried by the wheels, pivotally-supported segmental brakeshoe cradles, sectional brake-shoes loosely seated and detachably held in the cradles, pivoted levers to which the cradles are connected and wherebythe cradles are suspended beneath the friction-disks, a rock-shaft with which the levers are connected, and means for operating the rock-shaft; substantially as described.

6. A car-brake comprising car-Wheels, an axle, grooved friction-disks carried by the wheels, pivotally-supported segmental brakeshoe cradles, brake-shoes located in the cradles, and adapted to lit in the`grooved friction-disks, pivoted main levers to which the cradles are connected, and whereby the cradles are suspended beneath the friction-disks, auxiliary levers pivotally supported and connected to the main levers, auxiliary upper brake-shoes carried by the auxiliary levers above the friction-disks and adapted to be thrown into contact with the friction-disks, and means for operating the main and auxilary levers; substantially as described.

7. A car-brake comprising car-wheels, an axle, friction-disks carried by the wheels, pivotally-supported segmental brake shoe cradles, brake-shoes located in the cradles, pivoted main levers to which the cradles are connected and whereby the cradles are suspended beneath the friction-disks, auxiliary levers pivotally supported and connected to the main levers, auxiliary upper brake-shoes carried by the auxiliary levers above the f riction-disks, and adapted to be thrown intoV contact with the friction-disks, a rock-shaft connected with the main levers, and means operating the rock-shaft; substantially as described.

S. A car-brake comprising car-Wheels, an

axle, sleeves, having radial grooves and dovetail tenons, and carried by the wheels, friction-disks having a groove,and radial tongues, and dovetail channels, iitted to the grooves and tenons of the sleeves, pivotally-support; ed cradles, sectional brake shoes, loosely seated and detachably held in the cradles, adapted to seat in the grooves of the frictiondisks, and means for moving the brake-shoes 5' substantially as described.

9. A ear-brake comprising car-wheels, an axle, outer and inner cross-bars, the brackets mounted on the outer cross-bar, the links suspended from the brackets, the bearings on the inner cross-bar, the main levers mounted on the bearings, the links pivoted to the main levers, the friction-disks carried by the axle, the brake-shoes, cradles supported by the links beneath the friction-disks, the shaft having arms, connected with the main levers, the bell-crank lever connected with the shaft and means for operating the bell-crank lever; substantially as described.

10. A car-brake comprising car-Wheels, an axle,'outer and inner cross-bars, the brackets mounted on the outer cross-bars the links suspended from the brackets, the bearings on the inner cross-bar, the main levers mounted on the bearings, the links pivoted to the main levers, the friction-disks carried by the axle, the brake-shoe cradles supported by the links beneath the friction disks, the auxiliary brake-shoe levers pivoted to the brackets, the links connecting the main and auxiliary levers, the shaft having arms connected with the main levers, the bell-crank lever connected with the shaft, and means for operating the bell-crank lever; substantially as described.

ll. A car-brake comprising a pivoted cradle and sectional brake-shoes loosely seated and detachably held in the cradle, whereby provision is afforded for the expansion and contraction, as well as the ready renewal of the brake-shoes.

PHILIP S. KIN GSLAND.

In presence of- E. S. KNIGHT, STANLEY STONER.