US804287A - Car-brake. - Google Patents

Car-brake. Download PDF

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US804287A
US804287A US25629605A US1905256296A US804287A US 804287 A US804287 A US 804287A US 25629605 A US25629605 A US 25629605A US 1905256296 A US1905256296 A US 1905256296A US 804287 A US804287 A US 804287A
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brake
car
bars
rod
levers
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US25629605A
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Felix T Whitted
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B61—RAILWAYS
    • B61H—BRAKES OR OTHER RETARDING DEVICES SPECIALLY ADAPTED FOR RAIL VEHICLES; ARRANGEMENT OR DISPOSITION THEREOF IN RAIL VEHICLES
    • B61H13/00—Actuating rail vehicle brakes

Definitions

  • This invention relates to that type of carbrakes which embody operating mechanism connected with the brake-shoes by means of levers.
  • the invention resides, essentially, in the special arrangement and construction of the lever devices by which the brakes are operated, whereby a maximum amount of braking action may be produced by the application of a comparatively small amount of power.
  • Figure 1 is a plan view of a car-frame, showing the invention applied thereto.
  • Fig. 2 is avertical longitudinal sectional View.
  • Fig. 3 is a transverse sectional view on the line X X of Fig. 1.
  • Fig. 4 is a View showing more clearly the operating lever at one end of the car and the-mechanism connecting the same with the brake-bars.
  • Fig. 5 is a view similar to Fig. 3, the opposite operating-lever and adjacent mechanism being illustrated, however.
  • the brake mechanism comprising this invention is particularly designed for use in connection with cars, though of course the principle thereof may be applied in using the brakes upon vehicles of any class.
  • the numeral 1 designates the lower frame of the car, the body of the car not being shown, and the usual trucks are utilized to support the car and embody the front and rear axles 2, having the wheels 3.
  • transverse supports 4 Arranged at opposite ends of the car 1 are transverse supports 4, which supports are substantially secured to the car-body in any suitable way.
  • longitudinal guide boxes 5 At a point about intermediate the ends of the supports 4, which may be carried by hangers attached to the frame of the car 1, are located longitudinal guide boxes 5, in which slide the end portions of a longitudinal operating-rod 6, by which the brake mechanism is directly actuated.
  • the rod 6 extends the entire length of the car, preferably, and the end portions of said rod are square and provided with a plurality of teeth 7 longitudinally thereof.
  • gear-wheels 9 and 9* Suitably journaled in hangers or brackets 8 and arranged above the toothed end portions of the rod 6 are gear-wheels 9 and 9*, said gearwheels having teeth in mesh with the teeth 7 of the rod 6.
  • the gear-wheel 9 at one end of the car is directly actuated by an operatinglever 11, the lower portion of which is forked or bifurcated, so as to receive the gear-wheel 9 between the spaced lower portions thereof.
  • the lever 11 is pivoted coaxially with the shaft which supports the gear-wheel 9, and a handoperated latch-piece 12 is carried by the lever 11 and adapted to engage the teeth of the gearwheel 9, so that when pivotal movement is imparted to the lever 11, with the latch-piece 12 in engagement with the wheel 9, said wheel will be rotated and will impart longitudinal movement to the rod 6, because of the inter meshing relation to the teeth of the wheel 9 with the teeth 7 of said rod.
  • the latch-piece 12 is connected by a connecting-rod 13 with a handle 14, pivoted to the lever 11 adjacent this handle for convenient manipulation by the brakeman or operator of said lever.
  • the rod 6 is deflected or curved downwardly at the central portion thereof in order to pass beneath the axles 2 of the wheels 3, and this rod is connected with sets of brakelevers 15 and 16, said sets being arranged at opposite ends of the car.
  • the levers 15 are pivoted at a point between their ends, as shown at 17, to transverse beams 18, forming a part of transversely-arranged arms 19, which project downwardly from the car between the supports 4 and the adjacent wheels 3.
  • Links 20 connect the adjacent ends of the sets or pairs of levers 15 and 16 with the rods 6.
  • the upper ends of the levers 15 are connected with brake-bars 21, which are slidable longitudinally upon the beams 18, upon which said levers 15 are carried.
  • the parts 15 and 21 are mounted between upper and lower plates 22, which are rigidly secured, preferably, to the upper side of both beams 18.
  • Guides 23 are formed at the ends of the plates 22, so as to properly direct the movement of the brake-bars 21, so that the brake-shoes 24, carried by the brake-bars 21, may be forced into contact with the wheels 8, with which they cooperate.
  • the points of pivotal connection of the levers 15 with the member 18 are located near the outer ends of the levers, so that the greatest amount of leverage may be obtained in actuating the bars 21, with which said levers are operably connected.
  • said levers 16 are not directly connected with the bars 21*, as described with reference to the levers 15 and the bars 21.
  • the levers 16 are preferably provided at their outer ends with toothed segments 26, which engage similar segments 27, formed at adjacent ends of connecting-bars 28, which are pivoted between their ends to the beam 18, carrying the lever 16.
  • the inner ends of the connecting-bars 28 have the segments 27, the outer ends thereof being pivotally connected with the bars 21, carrying the brake-shoes 24.
  • the bars 21 are mounted between plates 22 in substantially the same manner as described with reference to the bars 21, the direction of movement of the sets of bars 21 and .21 being in opposite directions when these bars are simultaneously actuated by the rod 6. It will be understood that the connecting-bars 28 are pivoted between the points of connection with the bars 21 and the levers 16, as indicated at 29.
  • the operating means for actuation of the rod 6 is located at opposite ends of the car, so that the brakes may be set from either end, and the operating mechanism comprised in the parts 11, 12, 13 and 14, by which the gear-wheel 9 is actuated, is duplicated at the opposite end of the car for operating the gearwheel 9.
  • the gear-wheel 9, however, is not directly connected with its actuating-lever 11*, said lever being arranged for direct actuation of a second gear-wheel 30, which is in mesh with the wheel 9 to actuate the latter in the same direction as the gear-wheel 9 is actuated when the lever 11 is pulled toward the operator.
  • the lever ll has the latch-piece 12, the rod 13, 'and the hand-piece 14, which parts are similar to those arranged adjacent the lever 11.
  • the arrangement of the wheels 9 and 30, operated by the lever 11, is necessary in order to impart the same longitudinal movement to the rod 6 when the levers 11 and 11 are pulled toward the operator.
  • the wheels 9 and 30 are formed with ratchetwheels 31, which may be integrally formed with the wheels 9 and 30 or keyed to the shaft carrying said wheels, as found best in the practical embodiment of the invention.
  • the ratchet-wheels 31 are adapted to be engaged by ratchetpawls 32, which are connected with foot-levers 33, pivoted to the floor of the car in a position convenient for operation by the foot of the brakeman operating the levers 11 and 11.
  • the operation of the handpiece 14 will admit of forcing the lever 11 away from the operator and then again pulling it toward him as many times as necessary in order that the brakes may be set with the greatest amount of power in retarding the progress of the car.
  • the operation of the lever 11* when the brakeman is at the end of the car adjacent said lever is substantially the same as described with respect to the lever 11, the same longitudinal movement being imparted to the rod 6 because of the arrangement of the reversely-operating gears 9 and 30.
  • the gears 9 and 31 are of course prevented from releasing the brakes until the brakeman has actuated the foot-pieces 33, which are connected with the pawls 12, the above permitting the wheels 9 and3l to freely rotate to permit the brake-shoes 24 to move away from the wheels with which they engage.
  • the rod 6 be made with the end portions thereof adjustably connected with the body portion by means of adjustable connections 31 in the form preferably of turnbuckles.
  • adjustable connections 31 in the form preferably of turnbuckles.
  • suitable means may be provided to hold the members 12, 12, and 31 of the levers 11 and 11 out of cooperation with the wheels with which they coact under actual conditions of service.
  • the members 12 and 31 adjacent the lever 11 will be thrown out of cooperation with the wheels adjacent, and when the lever 11" is being used by the motorman the members 12 and 31 at the opposite end of the car will be thrown out of cooperation with the wheels engaged by them normally, the above being necessary in order to permit the lever or operating-handle at one end of the car to actuate the brake-rod 6 without interference on the part of the similar mechanism at the opposite end of the car.
  • a car-brake the combination of a carbody, a brake-rod, an operating-lever, rack; teeth carried by the brake-rod, a gear in mesh with the rack-teeth and operable bythe operating-lever, and brake-shoes operable by the brake-rod.
  • a car-brake the combination of a carbody, a brake-rod, brake-bars disposed longitudinally of the car, brake-shoes operable by the brake-bars, brake-levers connected at one end with the brake-bars, and means connecting the opposite ends of the brake-levers with the brake-rod.
  • a car-brake the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite endsof the-car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, brake-bars, brake-shoes operated by said brake-bars, and connecting means between the brake-bars and the brake-rod.
  • a car-brake the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite ends of the car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, brake-bars, brake-shoes operated by said brake-bars, and brake-levers pivoted at a point between theirends and connected with the brake-bars and the brake-rod.
  • a car-brake the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite ends of the car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, sets of brake-bars, brake-shoes operated by the sets of brake-bars, and sets of brakelevers connecting the sets of brake-bars with the brake-rod, one of said sets of brake-levers being connected with its brake-bars for reverse operation of the latter with respect to the otherset of brake-levers.
  • a car-brake the combination of a carbody, a brake-rod arranged longitudinally of the car-body,- means for actuating the brakerod, sets of brake-levers connected at one end with the brake-rod, sets of brake-bars slidable longitudinally of the car-body and operated by said brake-levers, and means for moving one set of brake-bars in a direction reverse to the movement of the other set.
  • a car-brake the combination of a carbody, a brake rod movable longitudinally thereof, brake-bars connected with the brakerod, brake-shoes operableby the brake-bars, ends of the brake-rod at opposite ends of the car being provided with a plurality of teeth, gears in mesh with the teeth of the brake-rod, operating-levers at opposite ends of the car, one of said operating-lev rs being directly connected with one of the gears aforesaid, and other operating-levers being connected for actuating the other gear in a direction reverse to that of the first-mentioned gear.

Description

PATENTED NOV. 14, 1905.
F. T. WHITTED.
GAR BRAKE.
APPLICATION FILED A2318, 1905.
2 SHEETS-SHEET 1.
PATENTED NOV. 14,1905.
F. T. WHITTED.
OAR BRAKE.
APPLICATION FILED APR.18, 1905.
2 SHBETS-BHBBT 2.
FELIX T. VVHITTED, OF W'HEETLEY, ARKANSAS.
CAR-BRAKE.
Specification of Letters Patent.
Patented Nov. 14, 1905 Application filed APTi1 905- gerial 256,296.
T 0 m7] whom it vita/y concern.-
Be it known that I, FELIX T. WHITTED, a citizen of the United States, residing at Wheetley, in the county of St. Francis and State of Arkansas, have invented certain new and useful Improvements in Car-Brakes, of which the following is a specification.
This invention relates to that type of carbrakes which embody operating mechanism connected with the brake-shoes by means of levers.
The invention resides, essentially, in the special arrangement and construction of the lever devices by which the brakes are operated, whereby a maximum amount of braking action may be produced by the application of a comparatively small amount of power.
For a full description of the invention and the merits thereof and also to acquire a knowledge of the details of construction of the means for effecting the result reference is to be had to the following description and accompanying drawings, in which Figure 1 is a plan view of a car-frame, showing the invention applied thereto. Fig. 2 is avertical longitudinal sectional View. Fig. 3 is a transverse sectional view on the line X X of Fig. 1. Fig. 4 is a View showing more clearly the operating lever at one end of the car and the-mechanism connecting the same with the brake-bars. Fig. 5 is a view similar to Fig. 3, the opposite operating-lever and adjacent mechanism being illustrated, however.
Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.
The brake mechanism comprising this invention is particularly designed for use in connection with cars, though of course the principle thereof may be applied in using the brakes upon vehicles of any class.
Referring to the drawings, the numeral 1 designates the lower frame of the car, the body of the car not being shown, and the usual trucks are utilized to support the car and embody the front and rear axles 2, having the wheels 3.
Arranged at opposite ends of the car 1 are transverse supports 4, which supports are substantially secured to the car-body in any suitable way. At a point about intermediate the ends of the supports 4, which may be carried by hangers attached to the frame of the car 1, are located longitudinal guide boxes 5, in which slide the end portions of a longitudinal operating-rod 6, by which the brake mechanism is directly actuated. The rod 6 extends the entire length of the car, preferably, and the end portions of said rod are square and provided with a plurality of teeth 7 longitudinally thereof.
Suitably journaled in hangers or brackets 8 and arranged above the toothed end portions of the rod 6 are gear- wheels 9 and 9*, said gearwheels having teeth in mesh with the teeth 7 of the rod 6. The gear-wheel 9 at one end of the car is directly actuated by an operatinglever 11, the lower portion of which is forked or bifurcated, so as to receive the gear-wheel 9 between the spaced lower portions thereof. The lever 11 is pivoted coaxially with the shaft which supports the gear-wheel 9, and a handoperated latch-piece 12 is carried by the lever 11 and adapted to engage the teeth of the gearwheel 9, so that when pivotal movement is imparted to the lever 11, with the latch-piece 12 in engagement with the wheel 9, said wheel will be rotated and will impart longitudinal movement to the rod 6, because of the inter meshing relation to the teeth of the wheel 9 with the teeth 7 of said rod. The latch-piece 12 is connected by a connecting-rod 13 with a handle 14, pivoted to the lever 11 adjacent this handle for convenient manipulation by the brakeman or operator of said lever.
The rod 6 is deflected or curved downwardly at the central portion thereof in order to pass beneath the axles 2 of the wheels 3, and this rod is connected with sets of brakelevers 15 and 16, said sets being arranged at opposite ends of the car. The levers 15 are pivoted at a point between their ends, as shown at 17, to transverse beams 18, forming a part of transversely-arranged arms 19, which project downwardly from the car between the supports 4 and the adjacent wheels 3. Links 20 connect the adjacent ends of the sets or pairs of levers 15 and 16 with the rods 6. The upper ends of the levers 15 are connected with brake-bars 21, which are slidable longitudinally upon the beams 18, upon which said levers 15 are carried. The parts 15 and 21 are mounted between upper and lower plates 22, which are rigidly secured, preferably, to the upper side of both beams 18. Guides 23 are formed at the ends of the plates 22, so as to properly direct the movement of the brake-bars 21, so that the brake-shoes 24, carried by the brake-bars 21, may be forced into contact with the wheels 8, with which they cooperate.
The points of pivotal connection of the levers 15 with the member 18 are located near the outer ends of the levers, so that the greatest amount of leverage may be obtained in actuating the bars 21, with which said levers are operably connected. In order that the longitudinal movement of the rod 6 in forcing the bars 21 toward the wheels 3 may likewise force oppositely operating bars 21, which are mounted for operation by the levers 16, toward the wheels 3, with which they cooperate, said levers 16 are not directly connected with the bars 21*, as described with reference to the levers 15 and the bars 21. The levers 16 are preferably provided at their outer ends with toothed segments 26, which engage similar segments 27, formed at adjacent ends of connecting-bars 28, which are pivoted between their ends to the beam 18, carrying the lever 16. The inner ends of the connecting-bars 28 have the segments 27, the outer ends thereof being pivotally connected with the bars 21, carrying the brake-shoes 24. The bars 21 are mounted between plates 22 in substantially the same manner as described with reference to the bars 21, the direction of movement of the sets of bars 21 and .21 being in opposite directions when these bars are simultaneously actuated by the rod 6. It will be understood that the connecting-bars 28 are pivoted between the points of connection with the bars 21 and the levers 16, as indicated at 29.
The operating means for actuation of the rod 6 is located at opposite ends of the car, so that the brakes may be set from either end, and the operating mechanism comprised in the parts 11, 12, 13 and 14, by which the gear-wheel 9 is actuated, is duplicated at the opposite end of the car for operating the gearwheel 9. The gear-wheel 9, however, is not directly connected with its actuating-lever 11*, said lever being arranged for direct actuation of a second gear-wheel 30, which is in mesh with the wheel 9 to actuate the latter in the same direction as the gear-wheel 9 is actuated when the lever 11 is pulled toward the operator. The lever ll has the latch-piece 12, the rod 13, 'and the hand-piece 14, which parts are similar to those arranged adjacent the lever 11. The arrangement of the wheels 9 and 30, operated by the lever 11, is necessary in order to impart the same longitudinal movement to the rod 6 when the levers 11 and 11 are pulled toward the operator. The wheels 9 and 30 are formed with ratchetwheels 31, which may be integrally formed with the wheels 9 and 30 or keyed to the shaft carrying said wheels, as found best in the practical embodiment of the invention. The ratchet-wheels 31 are adapted to be engaged by ratchetpawls 32, which are connected with foot-levers 33, pivoted to the floor of the car in a position convenient for operation by the foot of the brakeman operating the levers 11 and 11.
Describing the operation of the invention, when the car is traveling in the direction of the arrow (0 the brakeman will of course stand upon the platform of the car at the end at which the lever 11 is mounted. To apply the brakes, the brakeman by pulling the lever 11 toward him will rotate the gear-wheel 9, the latch-piece 12 being in engagement therewith, and longitudinal movement will be imparted to the rod 6. Said rod 6 will actuate the sets of levers 15 and 16, so that the brake- bars 21 and 21 will be forced toward the wheels, and the brake-shoes 24 will be thrown against the wheels in the customary way. If necessary, the operation of the handpiece 14 will admit of forcing the lever 11 away from the operator and then again pulling it toward him as many times as necessary in order that the brakes may be set with the greatest amount of power in retarding the progress of the car. The operation of the lever 11* when the brakeman is at the end of the car adjacent said lever is substantially the same as described with respect to the lever 11, the same longitudinal movement being imparted to the rod 6 because of the arrangement of the reversely-operating gears 9 and 30. The gears 9 and 31 are of course prevented from releasing the brakes until the brakeman has actuated the foot-pieces 33, which are connected with the pawls 12, the above permitting the wheels 9 and3l to freely rotate to permit the brake-shoes 24 to move away from the wheels with which they engage.
It is designed that the rod 6 be made with the end portions thereof adjustably connected with the body portion by means of adjustable connections 31 in the form preferably of turnbuckles. Theseadjustableconnections31 will admit of taking up slack caused by the wear upon the brake-shoes and will be very advantageous in the practical operation of the device.
It will be understood that suitable means may be provided to hold the members 12, 12, and 31 of the levers 11 and 11 out of cooperation with the wheels with which they coact under actual conditions of service. When the lever 11 is being used, the members 12 and 31 adjacent the lever 11 will be thrown out of cooperation with the wheels adjacent, and when the lever 11" is being used by the motorman the members 12 and 31 at the opposite end of the car will be thrown out of cooperation with the wheels engaged by them normally, the above being necessary in order to permit the lever or operating-handle at one end of the car to actuate the brake-rod 6 without interference on the part of the similar mechanism at the opposite end of the car.
Having thusdescribed the invention, what is claimed as new is 1. In a car-brake, the combination of an actuating-rod, pivoted brake-levers arranged in sets, brake-bars for each set, brake-shoes operable by the brake-bars, connecting means between the brake-levers and the actuatingrod, and means connecting each set of brakelevers with its set of brake-bars for operating said brake-bars in reverseidirections.
2. In a car-brake, the combination of a carbody, a brake-rod, an operating-lever, rack; teeth carried by the brake-rod, a gear in mesh with the rack-teeth and operable bythe operating-lever, and brake-shoes operable by the brake-rod.
3. In a car-brake, the combination of a carbody, a brake-rod, brake-bars disposed longitudinally of the car, brake-shoes operable by the brake-bars, brake-levers connected at one end with the brake-bars, and means connecting the opposite ends of the brake-levers with the brake-rod.
4:. In a car brake, the combination of a brake-rod, brake-bars, brake-levers for actuating said bars and pivoted at a point between their ends, means connecting one end of the brake-levers with the brake-rod, and pivoted connecting-bars connecting the opposite end of the brake-levers with the brake-bars, the brake-levers and the pivoted connecting-bars having intermeshing segments.
5. In a car-brake. the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite endsof the-car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, brake-bars, brake-shoes operated by said brake-bars, and connecting means between the brake-bars and the brake-rod.
6. In a car-brake, the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite ends of the car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, brake-bars, brake-shoes operated by said brake-bars, and brake-levers pivoted at a point between theirends and connected with the brake-bars and the brake-rod.
7 In a car-brake, the combination of a carbody, a brake rod longitudinally slidable thereon, ends of said rod having a plurality of teeth thereon, operating-levers at opposite ends of the car, reversely-operating gears in mesh with the teeth at the ends of the brakerod operable by the operating-levers aforesaid, sets of brake-bars, brake-shoes operated by the sets of brake-bars, and sets of brakelevers connecting the sets of brake-bars with the brake-rod, one of said sets of brake-levers being connected with its brake-bars for reverse operation of the latter with respect to the otherset of brake-levers.
8. In a car-brake, the combination of a carbody, a brake-rod arranged longitudinally of the car-body,- means for actuating the brakerod, sets of brake-levers connected at one end with the brake-rod, sets of brake-bars slidable longitudinally of the car-body and operated by said brake-levers, and means for moving one set of brake-bars in a direction reverse to the movement of the other set.
9. In a car-brake, the combination of a carbody, a brake rod movable longitudinally thereof, brake-bars connected with the brakerod, brake-shoes operableby the brake-bars, ends of the brake-rod at opposite ends of the car being provided with a plurality of teeth, gears in mesh with the teeth of the brake-rod, operating-levers at opposite ends of the car, one of said operating-lev rs being directly connected with one of the gears aforesaid, and other operating-levers being connected for actuating the other gear in a direction reverse to that of the first-mentioned gear.
In testimony whereof I aifix my signature in presence of two witnesses.
FELIX T. I/VHITTED. [L. s]
Witnesses:
E. M. THIOKSTERS, D. F. MOPHAUL.
US25629605A 1905-04-18 1905-04-18 Car-brake. Expired - Lifetime US804287A (en)

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