US642008A

US642008A - Car-brake.

Info

Publication number: US642008A
Application number: US72859199A
Authority: US
Inventors: Peter Schrieffer
Original assignee: Individual
Current assignee: Individual
Priority date: 1899-08-26
Filing date: 1899-08-26
Publication date: 1900-01-23
Anticipated expiration: 1917-01-23

Description

Patented Jan. 23, I900. P. SCHRIEFFER.

C A R B R A K E.

(Application filed Aug, 26, 1899.)

3 Sheets Sheet (No Model.)

W/TNESSES NVENTOH ME uonms PEILRS co. mpramnmmsumaron. a. c

Patented Jan. 23, 1900. v P. SCHRIEFFER.

C A R B RA K E.

(Application filed Aug. 26, 1899.!

3 Sheets-Sheet 2.

(No Model.)

A TTOHNE YS Patented Jan. 23, I900. P. SCHRIEFFER.

C A R B R A K E.

(Application filed Aug. 26, 1899.)

3 Sheets-Sheet 3.

(No Model.)

W/ TN E SSE S A TTOHNEYS UitiTnn STATES PATENT OFFICE.

PETER SOIIRIEFFER, OF NEW ORLEANS, LOUISIANA.

CAR-BRAKE.

SPECIFICATION forming part of Letters Patent N 0. 642,008, dated January 23, 1900.

Application filed August 26, 1899. Serial No. 728,591. (No model.)

To all whom it may concern:

Be it known that 1, PETER SCHRIEFFER, of New Orleans, in the parish of Orleans and State of Louisiana, have invented a new and Improved Car-Brake, of which the following is a full, clear, and exact description.

This invention relates to improvements in car-brakes, particularly brakes for electrically-operated cars; and one object is to provide a brake of simple construction that can be quickly and tightly set by comparatively little exertion of manual power; and a further object is to operate the electric controller by the means for operating the brake.

I will describe a car-brake embodying my invention and then point out the novel features in the appended claims.

Reference is to be had to the accompanying drawings, forminga part of this specification, in which similar characters of reference inclicate corresponding parts in all the figures.

Figure 1 is a side view of a car, showing a brake mechanism embodying my invention and illustrating the brake as released. Fig. 2 is a side elevation showing the brake as set. Fig. 3 is a bottom plan view. Fig. 4is asection through a brake block and eccentric. Fig. 5 is a section through the line 5 5 of Fig. 2. Fig. 6 is a section through the line 6 6 of Fig. 2. Fig. 7 is an elevation showing a brakelever and its connection with an electric controller. Fig. 8 is a plan view thereof, and Fig. 9 is a section through the line 9 9 of Fig. 7.

Each brake comprises a block 1, to which is removably attached a brake-shoe 2. The brake-shoe is here shown as provided with lugs 3, adapted to engage in recesses formed in the block 1 and through which fasteningpins at are passed. Extended from the brakeblock at the opposite side from that to which the shoe is secured is a weighted arm 5, adapted to move the brake-shoe out of engagement with the wheel when said shoe is released, as will be hereinafter described.

The brake-blocks for one set of opposite wheels are mounted loosely on eccentrics 6, which are secured to a rock-shaft 7, having bearings in boxes 8, supported on the side bars of the truck-frame. The two blocks of the other opposite wheels are mounted on similar eccentrics secured to a shaft 9, having bearings in blocks 10, secured to the side bars of the truck-frame. Each eccentric has at one side an annular flange 11 for engaging against one side of the brake-block, and a ring-like plate 12 is removably secured to the eccentric and engages against the other side of the brake-block. On this plate 12 is a lug 13, adapted to be engaged with a lug 14 on the brake-block for a purpose as will be hereinafter described.

From an arm 15, extended downward from the shaft 9, a draw-rod 16 extends to a connection with an arm 1'7, extended upward from the shaft 7, and from an arm 18, extended downward from the shaft 7, a draw-rod 19 extends to a connection with an arm 20, extended upward from the shaft 9. The upper ends of the

rods

16 and 19 are forked, so that the opposite members engage with opposite sides of the upwardly-extended arms, and through these portions both pins are passed.

A draw-rod 21 has its inner end pivotally connected to an arm 22, extended upward from the shaft 9 in line with the arm 17 on the shaft '7. This draw-rod 21 has a slot 22, through which the pivot for the upper end of the rod 16 passes. The draw-rod 23 has its inner end pivotally connected to an arm 24.,

extended upward from the shaft 7 in line with the arm 20 on the shaft 9, and this rod 23 has a slot through which a pivot-pin or the upper end of the rod 19 passes. The draw-rod 21 has connection with an operating-lever at one end of the car and the draw-rod 23 has connection with an operating-lever at the other end, and as these connections and levers are of similar construction it is deemed necessary to show but one in the drawings. The outer end of the draw-rod is pivotally connected to an arc-shaped lever 25, mounted to swing on a block 26, secured to the under side of the car-bottom, and from the otherend of this lever 25 a link 27 extends to a connection with the operating-lever 28, here shown as pivotally connected to the base portion of a segment-rack 29, attached to the upper side of the car-platform. The lower portion of this lever 28 of course passes through a suitable opening in the platform.

A stop-rod 30 is mounted on the lever 28 and is designed to engage with the segmentrack for holding the lever as adjusted. This rod slides on the lever 28, and it is moved upward by means of a hand-lever 31, having pivotal connection with said rod and with the lever, and is moved downward by a spring 32, attached to the lever 30 and engaging at its free end with the lever 31.

The operation of the device as so far described is as follows: When it is desired to set the brake, the lever 28 is to be moved, as here indicated, in the direction of the controller-box 33 on the car-platform. This movement of the, lever will rock the shaft 7, and this rocking of the shaft 7 by means of its connection 19 with the shaft 9 will also rock said shaft 9. Thisrocking of the levers will turn the eccentrics to cause the brake-shoes to engage more or less tightly against the wheels, the pressure of course being governed by the distance the lever is thrown. When it is desired to release the brake, the lever 28 is to be thrown to its normal position, which will of course return the eccentrics to their normal position, and then the weighted arms on the brake-blocks will swing said brake-blocks on the eccentrics until the lugs 14 engage with the lugs 13, which will prevent further movement of the brake-blocks, leaving the brakeshoes, however, free from the wheel.

While I have shown a brake mechanism for each pair of wheels, it is obvious that the brake mechanism for one pair of wheels only need be used, if so desired, and they may be placed either at the forward or rear side of the wheels.

I will now describe the means operated by the lever 28 for operating the current-controller arranged within the controller-box 33.

Secured to the dashboard of the car is a guide 34. Movable in the'guide 34 is a rackbar 35, having a rack 36 at one end adapted for engagement with a pinion 37, attached to the controller-shaft 38. On this controllershaft 38 is a pin 39, adapted to engage with a pin 40 on the top of the box 33 to limit the movement of the controller-shaft on turning on the current. From one end of the rackbar 35 the block 41 extends outward through the open front of the guide 34, and an arm 42 extends from this block and over the inner side of the lever 28. A pin 43 passes through this portion 42 and through a slot formed vertically in the lever and then intothe bar 35. A pointer 44, attached to the block 41, extends over the tops of the guides 34, and when the lever 28- is in its extreme right-hand position the rack 36 will be in engagement with the point intermediate of the marks 45 and the controller-box, as indicated in the drawings, and at this time the current will be fully shut off and the rack 36 out of engagement with the pinion 37. This position shows the limit of movement of the brake-lever. when the brake-shoes are in good condition. Should the lever move, however, farther than this point or to the point indicated at 46, it will indicate that the old shoes should be replaced by new ones.

Having thus fully described my invention, I claim as new and desire to secure by Letters Patent 1. In a brake, a rock-shaft, an eccentric mounted on the rock-shaft, a brake-block loosely mounted on the eccentric, a shoe on the block and a weight on the side of the block opposite that of the shoe and operating to move the shoe out of engagement with a wheel, substantially as specified.

2. In a car-brake, a rock-shaft supported on the car-truck, eccentrics secured to said shaft, brake-blocks loosely mounted on the eccentrics, weighted arms extended from the blocks, brake-shoes attached to the blocks, a draw-rod having connection with an arm extended from the rock-shaft, and a lever having connection with the draw-rod, substantially as specified.

3. In a brake, rock-shafts arranged adjacent to front and rear wheels, eccentrics mounted on said shafts, a rod extended from a downwardly-extended arm of each shaft to.

an upwardly-extended arm of the other shaft, draw-rods extending from both the extended arms on each of the shafts,.the said draw-rods being extended in opposite directions, levers having connection with said draw-rods,brake-' blocks loosely mounted on the eccentrics, and weighted arms extended from the'block, substantially as specified.

4. In a brake, a rock-shaft, an eccentric mounted on the rock-shaft, a brake-block loosely mounted on the eccentric, a weighted arm extended from the said block, a shoe on the block, and means for operating the shaft,

substantially as specified.

5. In a brake, a rock-shaft, an eccentric secured to the rock-shaft, a brake-block loosely mounted on the eccentric, a lug on the brake-block adapted for engagement with the" lug on the eccentric, a weighted arm extending from the block, and means for rocking the rock-shaft, substantially as specified.

6. In a brake, a brake-block, a brakeshoe having lugs for removably engaging recesses formed in the block, fastening-pins extend ing through said block and through the lugs, and a weight attached to the inner side of the block, substantially as specified.

7. In a brake, a rock-shaft, a brake-block mounted eccentrically on the rock shaft, weighted arms extended from the blocks, a draw-rod extended from an arm on the rockshaft, a curved lever with one end of which said draw-rod engages, an operating-lever 9. In an electric car, a brake, a laterallyswinging lever for operating the brake, a rackbar, a pin on said rack-bar extended through a slot in the lever, a controller-shaft, and a pinion on said shaft adapted for engagement with the rack, substantially as specified.

PETER SGHRIEFFER.

Witnesses:

J AMES JONES, G. PITARD, Jr.