US787363A

US787363A - Car-brake.

Info

Publication number: US787363A
Application number: US20801704A
Authority: US
Inventors: Charles A Fisher
Original assignee: CURT C ANDRUS; LOUIS SILBERBURG
Current assignee: CURT C ANDRUS; LOUIS SILBERBURG
Priority date: 1904-05-14
Filing date: 1904-05-14
Publication date: 1905-04-18
Anticipated expiration: 1922-04-18

Description

:PATENTBD APR. 18,'1905.

G. A. FISHER.

CAR BRAKE.

APPLICATION FILED MAY 14, 1904.

, n I o 1 y v A witwassen UNiTen STATES Patented April 18, 1905.

PATENT OFFICE..

(IIIA RL CS A. FISI-IFR. OF NIAGARA FALLS, NFV YORK, ASSIGNOR OF SIIVICN'IY-'IHRICE ONE-lilUNDRICD'IHS 'IO LOUIS SILBERBURG, OF

NIAHHARA FALLS, NICU' YORK,

AYI) UURT (I, A NDRUS, OF NORTH CAR-BRAKE.

SPECIFICATIGN forming' part of Letters Patent No. 787,363, dated April 18, 1905.

Amlieatiou filed May 14, 1904. Serial No. 208,017.

Be it known that l, Cinemas A. Fisnicn, a citizen of the llnited States, residing at Niagara Falls, in the county ot' Niagara and State ol New York. have invented new and useful Iniprovements in Car-Brakes, ol: which the following is a specilication.

This invention relates to hand-operate(l car-brakes; and the primary object ol the same is to provide a brake ol this class with means l'or positively applying the brakeshoes to the wheels with increased lorce without imposing extra strain on the Inotorman or operator and, in fact, reducing the applied l'orce on the brake-stall' or analogous device relatively to that usually required to set the brakes.

A further object et the invention is to provide means in a hand-brake for taking up the slack in the connection to the brake-levers controlled b v a motorman or other operator and increasing the torce proportionately as the power is applied.

The principle of operation embodied in the improved hand-brake is to increase the tension through the connection with the brakelevers relatively to the dralt of the elements controlled by a motorman or other operator through the medium of an intermediate controller connected to a brake-stall' and the brake-levers, the connection for the latter being arranged in such manner and operating with the controller so as to increase the leverage thereon to an excessive extent and obtain an immediate response both in applying and releasing the brake-shoes without lost motion.

The invention lurther consists in the conl with. Fig. 2 is a horizontal section on the line 2 2 Fig. i. Fig. 3 is a sectional elevation ol' the controller and hanger with which the brake-stalll and brake-lever mechanism are connected. Fig. -t is a section on the line l .l, Fig. 3. Fig. 5 is a detail elevation of the lower extremity ol the brake-stall'. Fig. 6 is a detail enlarged elevation ol one olI the rollers l'or the brake-lever connection movably disposed in the controller. Fig. T is a top plan view of the controller` showing a modification in the means l'or increasing the leverage on the brake-lever connection. Fig. S is a transverse vertical section ol the hanger for the (.fontroller and the latter in edge elevation, illustrating a modilication in the construction.

.Like parts appearing in dill'erent illustrations are designated by similar reference notations.

A designates the car-trucks, which are ol" any approved construction and duplicates ol5 each other, and centrally arranged thereon and Vfirmly secured in position are plates or analogous devices l, having outwardly-extending projections 2, to which actuatingarms 3 are pivotally connected in the usual manner and attached by brake-liwers 4 to the opposite brake-beams 5 olE each truck, said beams carrying shoes G, as in the ordinary brake construction. 'lhe brake mechanism carried by the trucks is essentially ol the usual l'orm ol such devices and need not be particularly described, it being understood that drawing tension exerted on one end ol each ol the arms I in a certain direction will cause both brake-beams 5 and their' shoes G to be drawn simultaneously against the wheels ol each truck7 and when the arm is released the parts will be restored to normal position or so that the brake-shoes will hang clear ol" the truck-wheels, the release operation being facilitated by the interposition of a spring 7 between the arm I3 and the adjacent part of the truck on which the plate 1 is secured.

The gist ol` the invention resides in an intermediate rotary controller or leverage multiplier S, which in the present instance comprises a horizontally-disposed double I drum 9 or a drum provided with two separate winding-surfaces 10 and 11 by an intermediate circumferential flange 12. This drum has upper and lower trunnions 13, rotatably held in the upper and lower members of a slide or shifting carrier 14, the upper member of the latter engaging side guides 15 at the lower terminals of a hanger 16, which is secured .to the under side of the bed of the car or to the framework beneath the latter, in accordance with the particular car construction to which the brake is applied. Radially disposed with respect to the upper and lower heads of the drums and arranged in reverse positions are guards 17, and in the said guards longitudinal slots 18 are formed in alinement with similar slots 18a in the heads of the drum. The slots 18 and 18a are engaged by rollers 19, which travel therein, and connected by a spindle 20, the said rollers, respectively, having upper and lower flanges 21 of greater diameter than the width of the slots to bear against the upper and lower sides of the guards and the drum-heads, as clearly shown by Fig. 3. The purpose of the flanged rollers is to reduce friction in the operation thereof and prevent them from becoming displaced or thrown out of engagement with respect to the guards and drumheads. In other words, it is desired that the connected rollers be maintained at all times in normal position irrespective of the pulling strain that may be applied thereto and which will be more fully hereinafter explained. Each of the spindles 20 has an arm 22 applied thereto and projected diametrically in opposite directions, the arms being held in planes at right angles to the lengths of the slots 18 and 18a and also serve as a further means to prevent displacement of the rollers 19.

Each of the brake-staffs 23, located at op posite ends of the car-body, has in addition to the lower ratchet or locking wheel 24 a lower involute winding-head 25 with a baseflange 26, and to said head is attached the outer end of the brake-operating chain or analogous device 27, the opposite end of said chain being attached to one of the windingspaces of the drum 9. The chains or analogous devices 27 extending inwardly from the opposite brake-staffs pass over diametrically opposite portions of the drum 9 and wind and unwind in reverse directions with respect to the drum in the separated spaces of the latter, and by the operation of either brakestaff to apply the brakes the brake mechanism of both trucks will be simultaneously operated.

Attached to the free ends of the arms 3 are the outer terminals of brake-rods 28, having intermediate turnbuckles 29 to take up unnecessary slack and compensate for wear of the brake-shoes. To the inner ends of the brake-rods 28 chain-couplings or other flexible devices 30 are secured and also attached to the outer ends of the arms 22, and

by this means the rotation of the drum 9 or the actuation of the controller will be transmitted through the rods 28 and actuate the brake mechanism either in the applying or releasing operations of the latter.

The rollers 19, conjointly operating, maybe correctly termed leverage multipliers or multiplying means, for when either of thechains or analogous devices 27 is operated to apply the brakes the rollers are forced toward the center of the controller from opposite directions and quickly take up the slack and at the same time increase the levera e on the brake mechanism directly carrie by the trucks through the rods 28 and flexible connections 30. Owing to the movable attachment of the connections 30 to the controller through the medium of the rollers, the intensified tension desired to be set up in the rods 28 will immediately ensue without lost motion in view of the opposite positions of the rollers and the rotation of the controller, and any tendency toward twisting the rollers out of place would be resisted by the flanges 21 and the arms 22. Though the flanges 21 and arms 22 will resist disarrangement or disengagement of the rollers 19, they will not interfere with the antifrictional operation of such rollers, and the latter will always be sensitive to movement.

In Figs. 5 and 7 a modification of the leveragemultiplying means is shown, the roller heretofore explained being dispensed with and in lieu thereof reversely-arranged involute heads 31 are attached to the centers of the opposite heads of the drum, and to the bases of said heads the connections 30 are attached and wind in opposite directions on said heads. As the connections 30 traverse the heads 31 from the bases toward the reduced portions of the heads, the leverage is gradually increased by bringing said connections nearer to the center of the drum. In other respects the devices shown by Figs. 7 and 8 are in all particulars similar to the construction heretofore explained, and like reference-notations are applied thereto.

The involute heads at the lower terminals of the brake-staffs 23 are also beneficial in the operation of the brake in that in the preliminary or primal rotation of either staff' a greater portion of the chain 27 will be taken up and the controller 8 more rapidly actuated to quickly bring the brake mechanism in braking relation to the truck-wheels with less eort on the part of the mtorman or operator and also more uniformly and readily take up the slack of the chains or other connections 27.

The movement of the controller in opposite longitudinal directions, through the medium of the guide construction heretofore explained, compensates for wear and is also important when a car 1s rounding a curve and one truck passes onto the arc before thc IOO lIO

other reaches the same or in making a switch. l'lnder these conditions the controller' yields or gives way proportionately to the irregular position ot the trucks with relation to each other without blocking or interfering with the movement ot the latter.

From the foregoing it will be seen that a very powerful vet easil voperate.l brake mechanism is provided and which will insure a torcet'ul application ot the brake-shoes to the truck-wheels.

By the use ol the improved hand-brake mechanism herein disclosed the vibration and injury to the general car structure is reduced to a minimum, and, further, in view ot the positive operation ol` the several parts set l'orth a car may be stopped, under normal conditions, within a shorter distance l'roni the time the initial operation to apply the brakes is pursued than is possible in the ordinary brake structuries.

lla-ving thus lully described the invention, what is claimed as new is I. ln a ear-brake mechanism, trucks provided with brake devices, brake-stalls, a carrier movably mounted. a drum provided with slots and independent winding-surfaces and rotatably mounted upon the carrier, leveragemultiplying means movable in said slots, and eonni-ctions between the brakestall's and said wimling-surt'aces and between the leverage -multiplying means and said brake devices.

2. ln a car-brake mechanism, trucks provided with brake devices, brake-staffs provided with involute winding-heads, a carrier movably mounted, a controller journaled on said carrier, and connections between the said involute heads and controller and between the controller and said brake devices.

3. ln a car-brake mechanism, trucks provided with bralie devices, guides, brakestatls provided with involute winding-heads, a carrier movablv mounted on said guides, a controller Iiournaled on said carrier and provided with slots and independent windingsurfaces, guards secured to the controller and provided with slots in alinement with the slots in the controller, spindles provided with rollers and movable in said slots, and connections between the winding-surtaces and involute heads and between the spindles and brake devices.

l. ln a car-brake mechanism, trucks provided with brake devices, brake-stalls, a drum provided with slots and independent winding surfaces, means movable in said slots, and connections between the brake-staffs and said winding-surfaces and between the leverage-multiplying means and said brake devices.

5. ln a car-brake mechanism, trucks provided with brake devices, brake-staffs, a earleveraefe multi )lvimT c n i upon the carrier, and connections between the brake-statfs and controller and between the controller and brake devices.

6. ln a car-brake mechanism, trucks provided with brake devices. brake-sta'tl's, a controller' having slots, guards secured to the controller and having slots in alineinent with the slots in the controller, leverage-multiplying means movable in said slots, and connections between the controller and brake-statls and between the leverage-11u11tiplying means and brake devices.

7. ln a car-brake mechanism, trucks provided with bralie devices, brake-stalls, a controller having slots, leverage-multiplying means mounted in said slots, and connections betwecn the controller and brake-stalls and between the leverage-multiplying means and brake devices, said leverage-multiplying means operatingin said slots to diaw the connections engaging the same closer to the center el the controller when the brakes are applied.

S. In a car-brake mechanism, trucks provided with brake devices, brake-stalls, a controller having radial slots, leverage-multiplying means movable in said slots, and connections between the controller and brake-stalls and between the leverage-multiplying means and brake devices.

Q. ln a car-brake mechanism, trucks provided with brake devices, brake-stalls, a controller having radial slots, leverage-multiplying means movable insaid slots, a carrier supporting said controller, said carrier being movable longitudinally whereby to compensate `for the irregular relative position olt the trucks, and connections between the controller and brake-stalls and between the leverage-multiplying means and brake devices.

10. ln a car-brake mechanism, trucks provided with brake devices, brake-stalls, a controller movably mounted whereby to compensate 'for the irregular relative positions of the trucks, said controller being provided with radial slots, leverage-multiplying means movable in said slots, and connections between the controller and brake-stalls and between the leverage-multiplying means and brake devices.

11. ln a car-brake mechainsin, trucks provided with brakc devices, brake-stads, a controller provided with radial slots and movable longitudinally whereby to compensate tor the irregular relative positions ol' the trucks, leverage-multiplying means movable in said slots, and connections between the controller and brake-stalls and between the leverage-uniltiplying means and brake devices.

l2. ln a car-brake mechanism, trucks provided with brake devices, brake-stads, a carrier movably mounted, a controller rotatably rier mov-ably mounted, a controller journaled mounted upon the carrier and provided with IOO IIO

leverage multi lying means, and connecand brake-staffs and between the spindles and tions between t e controller and brake-staffs and between the leverage-multiplying means and brake devices.

- 18. ln a car-brake mechanism, trucks provided with brake devices, brake-staffs, a carrier mounted upon the car to have a longitudinal movement, a controller rotatably mounted upon the carrier and provided with leverage multiplying means, and connections between the controller and brake-staffs and between the leverage-multiplying means and brake devices.

14. In a car-brake mechanism, trucks provided with brake devices, brake-staffs, a carrier movably mounted, a drum provided with slots and rotatably mounted upon the carrier, leverage-multiplying means mounted in said slots, and connections between the controller and brake-staifs and between the leverage-multiplying means and brake devices.

15. In a car-brake mechanism, trucks provided with brake devices, brake-stads, a carrier movably mounted, a drum provided with slots and rotatably mounted upon the carrier, spindles provided with rollers mounted in said slots, and connections between the drum brake devices.

16. In a car-brake mechanism, trucks provided with brake devices, brake-staffs, guides, a carrier movably mounted on the guides, a drum provided with slots and rotatably mounted upon the carrier, guards secured to the drum and provided with slots in alinement with the slots in the drum, spindles provided with rollers mounted in said slots, and connections between the drum and brakestaffs and between the spindles and brake devices.

17. In a car-brake mechanism, trucks provided with brake devices, brake-staffs, a rotatably-mounted controller having slots, leverage-multiplying means mounted in said slots, and connections between the controller and brake-staffs and between the leverage-multi.- plying means and brake devices.

In testimony whereof l afIiX my signature in presence of two witnesses.

CHARLES A. FISI-IER. l

Witnesses:

JOHN L. FLETCHER, KATHARINE ALLEN.