US1562793A - Railway-car brake - Google Patents

Railway-car brake Download PDF

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US1562793A
US1562793A US461562A US46156221A US1562793A US 1562793 A US1562793 A US 1562793A US 461562 A US461562 A US 461562A US 46156221 A US46156221 A US 46156221A US 1562793 A US1562793 A US 1562793A
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crank
arm
car
shaft
turned
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US461562A
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Hugh W Sanford
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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
    • B61H9/00—Brakes characterised by or modified for their application to special railway systems or purposes
    • B61H9/003—Brakes characterised by or modified for their application to special railway systems or purposes for shunting operation or for narrow gauge trains

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  • My improven ient relates particularly to brakes for mine cars and similar small cars.
  • the object of the invention to simplify and reduce cost and at the same time producean eflective brake.
  • Fig. 1 is a side elevation of a part-c1. a mine car embodying my improvement;
  • Fig. 2 is an end elevation of the same car
  • Fig. 3 is a section on the line, 3-8, of Fig. 2, looking toward the right;
  • Fig. 5 is an upright section on the line, 55, of Fig. 4,1ookii1gintlie direction or" the arrow;
  • Fig. 6 is'a detail view showing some parts of the mechanism separated from each other.
  • A is the car body, and B, B are the car wheels.
  • C, C are two brake straps,
  • bracket bearings Between the wheels and above the level of the axles are two bracket bearings, D, D, which are secured to the body of the car and receives the horizontal rock shaft, E, which also rests in a third bracket bearing, D located on the side of the car body, near the right hand end of the car as shown in Fig. 1.
  • the shaft, E Between the bearings, D, D, the shaft, E, is bent laterally to ior'm a crank, E extending outward away from the car a short distance.
  • Two hangers, F, F are supported by the crank, E and extend downward, and each has it lower end, F bent toward the adjacent Wheel.
  • a hori- Zontal bridge bar, F extends from one hanger, F, to the other and has oblique ends, F bearing against the oblique ends, F of the hangers.
  • a bolt, F extends through each end of the bridge plate and the adjaent hanger and the adjacent upturned end, C, of the adjacent brake strap, C. Nuts, F are placed on said bolt to bind the hangers and the bridge plate to each other and to bind the brake strap against the head of Serial no. 431,562,
  • the opposite end of the brake strap is secured to a bracket, O secured to theside oi the car bod in position to bring that end of the brake strap lower than the upper part of the adjacent wheel.
  • the nut-s, F which are located at ep a site sides of the ends, F and F of the hangers, F, and bridge bar, F permit-making separate adjustment between each brake strap andthe crank. It said nuts on either bolt are moved toward the headxcif that bolt, the contact between the adjacent etrapend the adjacent wheel will be made scener By means of this adjustment, the pa rts ay be so. arranged as to cause 'siimiltaneous en"- gagement between the straps and the wheels.
  • the rock shaft, E extends horizontally toward the I right beyond the end of the car body. There it is bent horizontally across the end of the car body and parallel to the latter to form a long arm, E Near its end, said arm is flattened to form a blade E havin-ga lower outward-directed edge, E.
  • An approxi mately upright rack bar, E having teeth, E extends across the arm, E and is cured to the end of the "car body bybolts, E.
  • the edge, E of 'theblade, E is'adapted to engage the teeth, E, and prevent downward movement of the arm, E
  • the cra k, E and the arm, -E are at opposite sides of the axial line of the shaft, E.
  • the arm, E raised, the crank, ET is moved downward, whereby the hangers, F, the bridge bar, F the bolts, F and the adjacent ends of the brake straps are forced downward, whereby the brake straps are put under tension and made to bear a'ctively upon the wheels, B.
  • the arm, E is raised manually and drawn againist the teeth, E, of the rack bar, E so as to make engagement be tween the edge, E and one of said teeth when the arm reaches its upper limit,
  • the arm will be locked, and thereby the en gagement of the brake straps is maintained.
  • This engagement is intensified through the flexibility of the shaft, E, and the arm, E the shaft and said arm being together of suflicient length to allow appreciable flexing, although a short section of the shaft or arm would be practically inflexible.
  • the rock shaft, E rests in only two bearings, D and D and the crank is a single arm, E to which is coupled the upper'end of a stem, G, which extends slidably through a bracket, G and through the single brake strap, H, extending from one bracket, C to the other bracket, C and said strap extending downward between the two wheels.
  • the stem, G also extends through a. washer plate, G resting on the strap and making wider engagement with the strap than would be made if the nut, G bore upon the strap.
  • a nut, G surrounds said stem above said plate and below the strap two nuts, G", surround said stem.
  • the strap, H By raising or lowering the nuts, G and G on the stem, G, the strap, H, is adjusted relative to said stem, for bringing the arm, E to the desired angle when the straps engage the wheels.
  • the opening in the bracket, G through which the stem, G, extends is larger than the thickness of said stem in the direction parallel to the length of the car, in order that the lower part of the stem, G, may swing parallel to the length of the car for equalizing engagement of the strap on the wheels. (Fig. 4).
  • both forms of the structure may be produced with a limited amount of labor. No castings are needed in either form.
  • no forging is needed excepting to form the rack bar and the blade, E on the arm, E The restof the work is merely cutting and punching and bending.
  • the bolts, F are ordinary bolts threaded to the head.
  • the nuts are ordinary stock nuts.
  • C D and D are formed of ordinary stock a metal.
  • the arm, E and the stem, G are produced by simple forging. It is also to be observed that the application of the various parts to the car is easily accomplished.
  • rockshaft arranged parallel-i0 and supported at one side of the car body and having a crank, brake means, including two brake straps, engaged by said crank and adapted to be pressed into engagen'ient with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, and means for engaging and holding said arm when said arm has been lifted and the shaft so turned, substantially as described.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Braking Arrangements (AREA)

Description

H. W. SANFORD RAILWAY CAR BRAKE Nov. 24, 1925- 2 Sheets-Sheet 1 Filed April 15, 1921 Nov. 24, 1925 H. w. SANFORD RAILWAY cm BRAKE Filed April 15, 1921 2 Sheets-Sheet- 2 Patented Nov. 24, 1925.
RAILWAY-CAR BRAKE.
Application filed April 1 5, 1921.
it known that I, Hnen TV. Samoan, a citizen of the United States, residing at Knoxville, in the county of Knoll: and State of Tennessee, have invented a new and useful Improvement in Railway-Car Brakes, of which the -following is a specification, reference being had to the accompanying draw- 111g.
My improven ient relates particularly to brakes for mine cars and similar small cars.
The object of the invention to simplify and reduce cost and at the same time producean eflective brake.
In the accom anying drawings,
Fig. 1 is a side elevation of a part-c1. a mine car embodying my improvement;
Fig. 2 is an end elevation of the same car;
Fig. 3 is a section on the line, 3-8, of Fig. 2, looking toward the right;
Fig. at a side elevation of car embodying my invention in another form;
Fig. 5 is an upright section on the line, 55, of Fig. 4,1ookii1gintlie direction or" the arrow;
Fig. 6 is'a detail view showing some parts of the mechanism separated from each other.
Referring first to Figs. 1, 2 and 8 of the drawings, A is the car body, and B, B are the car wheels. C, C are two brake straps,
one of which is applied to each of two wheels B, at the same side of the car.
Between the wheels and above the level of the axles are two bracket bearings, D, D, which are secured to the body of the car and receives the horizontal rock shaft, E, which also rests in a third bracket bearing, D located on the side of the car body, near the right hand end of the car as shown in Fig. 1. Between the bearings, D, D, the shaft, E, is bent laterally to ior'm a crank, E extending outward away from the car a short distance. Two hangers, F, F, are supported by the crank, E and extend downward, and each has it lower end, F bent toward the adjacent Wheel. A hori- Zontal bridge bar, F extends from one hanger, F, to the other and has oblique ends, F bearing against the oblique ends, F of the hangers. A bolt, F, extends through each end of the bridge plate and the adjaent hanger and the adjacent upturned end, C, of the adjacent brake strap, C. Nuts, F are placed on said bolt to bind the hangers and the bridge plate to each other and to bind the brake strap against the head of Serial no. 431,562,
the bolt. The opposite end of the brake strap is secured to a bracket, O secured to theside oi the car bod in position to bring that end of the brake strap lower than the upper part of the adjacent wheel.
The nut-s, F which are located at ep a site sides of the ends, F and F of the hangers, F, and bridge bar, F permit-making separate adjustment between each brake strap andthe crank. It said nuts on either bolt are moved toward the headxcif that bolt, the contact between the adjacent etrapend the adjacent wheel will be made scener By means of this adjustment, the pa rts ay be so. arranged as to cause 'siimiltaneous en"- gagement between the straps and the wheels.
From the bracket bearing, 13 the rock shaft, E, extends horizontally toward the I right beyond the end of the car body. There it is bent horizontally across the end of the car body and parallel to the latter to form a long arm, E Near its end, said arm is flattened to form a blade E havin-ga lower outward-directed edge, E. An approxi mately upright rack bar, E having teeth, E extends across the arm, E and is cured to the end of the "car body bybolts, E. The edge, E of 'theblade, E is'adapted to engage the teeth, E, and prevent downward movement of the arm, E
The cra k, E and the arm, -E are at opposite sides of the axial line of the shaft, E. Hence when the arm, E raised, the crank, ET, is moved downward, whereby the hangers, F, the bridge bar, F the bolts, F and the adjacent ends of the brake straps are forced downward, whereby the brake straps are put under tension and made to bear a'ctively upon the wheels, B, When the brakes are to be set, the arm, E is raised manually and drawn againist the teeth, E, of the rack bar, E so as to make engagement be tween the edge, E and one of said teeth when the arm reaches its upper limit, Thus the arm will be locked, and thereby the en gagement of the brake straps is maintained. This engagement is intensified through the flexibility of the shaft, E, and the arm, E the shaft and said arm being together of suflicient length to allow appreciable flexing, although a short section of the shaft or arm would be practically inflexible.
While provision is thus made for effectiv'ely applying the brake straps and holding them when applied, provision is also m at made for automatically holding the brake straps out of engagement when application is not desired. This is accomplished by placing the weight of the relatively long arm, F3, in opposition to the crank, E and the parts supported by said crank. When the arm, E has been released from the teeth of the rack bar, E said arm, by the action of gravity assumes its lowest position and by its downward movement lifts the relatively short crank, E and all the parts supported thereby, whereby tne brake straps are held out of action. The arm, E as shown, extends across the end of the car, and, as above indicated, such length gives the arm the weight needed to adapt the arm to tend to turn the rock shaft for the release of the brake mechanism. Furthermore, h us lengthening the arm makes it accessible by an attendant from either side of the car.
It is now to be observed that a minimum amount of mechanism and simple movements are involved in the effective application of the brakes. To apply brake mechanism to two wheels, one being located at one side and the other at the other side of the car, as has heretofore been done, requires mechanism that is more complex and more expensive to construct. In this connection, it is to be ob served that in cars of this class, the body of the car usually extends downward close to the track and precludes use of the type of brake construction used in larger railway cars having bodies high above the tracks.
In the form shown in Figs. 4, 5 and 6, the rock shaft, E, rests in only two bearings, D and D and the crank is a single arm, E to which is coupled the upper'end of a stem, G, which extends slidably through a bracket, G and through the single brake strap, H, extending from one bracket, C to the other bracket, C and said strap extending downward between the two wheels. The stem, G, also extends through a. washer plate, G resting on the strap and making wider engagement with the strap than would be made if the nut, G bore upon the strap. A nut, G surrounds said stem above said plate and below the strap two nuts, G", surround said stem. By raising or lowering the nuts, G and G on the stem, G, the strap, H, is adjusted relative to said stem, for bringing the arm, E to the desired angle when the straps engage the wheels. The opening in the bracket, G through which the stem, G, extends is larger than the thickness of said stem in the direction parallel to the length of the car, in order that the lower part of the stem, G, may swing parallel to the length of the car for equalizing engagement of the strap on the wheels. (Fig. 4).
The operation of this form of the mechanism is similar to the operation of the mechanism shown by Figs. 1, 2 and 3. W hen the arm, I is raised, the stem, G, is forced downward, whereby the strap H, is applied to the two wheels, When the arm, E is free, the stem, G, is lifted by the weight of the arm, FF, whereby the strap, fl, is lifted.
It is now to be observed that both forms of the structure may be produced with a limited amount of labor. No castings are needed in either form. In the first form no forging is needed excepting to form the rack bar and the blade, E on the arm, E The restof the work is merely cutting and punching and bending. The bolts, F are ordinary bolts threaded to the head. The nuts are ordinary stock nuts. The brackets,
C D and D are formed of ordinary stock a metal. In the form of Figs. l, 5 and 6, the arm, E and the stem, G, are produced by simple forging. It is also to be observed that the application of the various parts to the car is easily accomplished.
I claim as my invention,
1. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means jointed to said crank and adapted to be pressed downward into engagement with said wheel when said rock shaft is turned to move said crank downward, and rigid means extending approximately horizontally across the end of the car and normally acting on said shaft to turn said shaft to lift said crank and said brake means and said turning means being adapted. to be moved manually to turn said shaft in the opposite direction, substantially as described.
2. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, means, including a brake strap, jointed to said crank and adapted to press said strap into engagement with said wheel when said rock sha 't is'turned to move said crank downward, and rigid means extending appror-zimately horizontally across the end of the car and normally acting to turn said shaft to lift said crank and said brake means and said turning means being adapted to be moved manually to turn said shaft in the opposite direction, substantially as described.
3. The combination with the car body and a wheel at one side of the car, of a hori- -zontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted to be pressed into engagement with said wheel when said rocl: shaft is turned to move said crank downward, an arm on said shaftat the side of the latter opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm q in mea /9e will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
4:. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, means, including a brakestrap, engaged by said crank and adapted to be pressed into engagement with said wheel when said rock shaft .is turned to more said crank downward, an arm on said shaft at the side of the latter opposite the crank and extending approximately horizontally acr the end of the car, whereby the weight of said arm will lift said crank and the. brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substam tially as described.
5. The combination with a ar body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a. long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, and scans for engaging and holding said arm when said arm has been raised and the shaft so tinned, substantially as described.
6. The combination with a car body and two wheels one side of the car, of a hori' zontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, and brake strap means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, and means for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as described.
7. The combination with a car body and two whee at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank and extending app mately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the 'car, and means for engaging and holding aid arm when said shaft has been turned to make said engagement, substantially as described.
8. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake strap means engaged by said crank and adapted to be pressed into engagen'i'ent with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank and extending approximai' ly horizontally across the end of the car, whereby the weigl-rt of said than will lift .t id arank and the brake means when said-arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
9. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engiiged by said crank and adapted to be pressed into engagement with said wheel when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, an upright rack iar for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as described.
10. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one'side of the car body and having a crank, means, including a brake strap, engaged by said crank and adapted to press said strap into engagement with said wheel when said rock shaft is turned to more said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, an upright rack tar for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as described.
11. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted to be pressed into engagement with said wheel when said rock shaft is turned to more said crank llU downward, an arm on said shaft at the side of the latter opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and a rack bar for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
12. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, means, including a brakestrap, engaged by said crank and adapted to be pressed into engagement with said wheel when said rock shaft is turned to move said crank downward, an arm on said shaft at the side of the latter opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the eaf, and a rack bar for engaging and holding said arm when said shaft has been turned to make said on gagement, substantially as described.
13. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted tobe pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, an up right rack bar for engaging and holding said arm when said arm has been raised and said shaft so turned, substantially as described.
14. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, and brake strap means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, an upright rack bar for, engaging and holding said arm when said arm has been raised and said shaft so turned, substantially as described.
15. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and a rack bar for engaging and holding said arm when said shaft has been turned to make engagement, substantially as described.
16. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake strap means engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said 1' n is free and whereby said arm is made accessible from both sides of the car, and a rack bar for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
1.7. The combination with the car body and a wheel at one side of the car, of a hori zontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means, including a hanger, engaged by said crank and adapted to be pressed into engagement with said wheel when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the ends of the car, and means for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as described.
18. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, means, including a brake strap, and a hanger, engaged by said crank and adapted to press said strap into engagement with said wheel when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, and means for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as described.
19. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means, including a hanger, engaged by said crank and adapter to be presrid into engagement with said wheel when said rock shaft is turned to move said crank downward,an arm on said shaft at the side of the latter opposite the crank and er-ztending approxinmtely horizon tally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when sairfl arm is free and whereby said arm is made accessible from both sides of fhe car, and means for engaging and holding said arm when said shaft has been turned to mak said engagen'ient, substantially as described.
20. The combination with the car body and a wheel at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, means, inclndii a brakestrap and a hanger on red by l and adapted "to be pressed into i, with said. wheel when said rock shair is turned to more said crank doi'vnward, an arm on said shaft at the side of (he latter opposite the crank and extending appro51i matcly horizontally across the end of the car, whereby the weight of i rid arm will lift said crank and the brake mea when said arm is free and whereby saii rm is made acres, ble from both sides of the car, and means for engaging and holding said arm when said shaft has been inrned to inak said engagement, substantially as described.
'l he combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means, including a hanger, engaged by said crank and ada iited to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a long arm riy'd on the rock shaft and extending approxin'iately horizontally across the end of the air, and means for engaging and holding said arm when said arm has been raised and the shaft so turned, substantially as de scribed.
22. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, and brake strap means, ineluding a hanger, engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and e7;- tending approximately horizontally across the end of the car, andmeans for engaging and holding said arm when said arm has been raised and the shaft so turned, sub stantially as described.
The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and SUPPOlLOCl at one side of the car body and having a crank, brakemeans, including a hanger, engaged. by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank and ezqtcn ding approximately horizontally across the end of the car, whereby the weight of said arnrwill lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when Said shaft has been turned to make said engagement, substanti ally as described.
24-. The combination with a car body and two wheels at one side of the car,of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake strap means, including a hanger, engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, an arm on said shaft at'the side opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described The combination with a car body and two wheels at one side of the car, of a horizontal. rockshaft arranged parallel-i0 and supported at one side of the car body and having a crank, brake means, including two brake straps, engaged by said crank and adapted to be pressed into engagen'ient with said two wheels when said rock shaft is turned to move said crank downward, a long arm rigid on the rock shaft and extending approximately horizontally across the end of the car, and means for engaging and holding said arm when said arm has been lifted and the shaft so turned, substantially as described.
26. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of th car body and having a crank, brake means, including two brake straps, engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward a relatively long arm on said shaft at the side opposite the crank and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift lOO said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
27. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, brake means, including two brake straps, engaged by said crank and adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, a relatively long arm on said shaft at the side opposite the crank, and extending approximately horizontally across the end of the car, whereby the weight of said arm will lift said crank and the brake means when said arm is free and whereby said arm is made accessible from both sides of the car, and a rack bar engaging and holding said arm when said shaft has been turned to make said engagement substantially as described.
28. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank elongated parallel to the shaft axis, brake means, including a pair of hangers, engaged by said crank and adapted to be pressed into engagement with said two wheels when said rockshaft is turned to move said crank downward, an arm on said shaft at the side opposite the crank, whereby the weight of said arm will lift said crank and the brake means when said arm is free, and means for engaging and holding said arm when said shaft has been turned to make said engagement, substantially as described.
29. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, two brakestraps, two hangers on the crank, one being attached to one and the other to the other of said straps, whereby said straps are adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, and means for engaging and holding said rock shaft when said shaft has been so turned, substantially as described.
30. The combination with a car body and two wheels at one side of the car, of a horizontal rock shaft arranged parallel to and supported at one side of the car body and having a crank, two brake straps, hangers joined to said straps, and a bridge bar separating the hangers, whereby the straps are adapted to be pressed into engagement with said two wheels when said rock shaft is turned to move said crank downward, and means for engaging and holding said rock shaft when said shaft has' been so turned, substantially as described.
31. In a railway car, a plurality of wheels at one side of the car, a strap brake for each of said wheels, a hanger for each strap brake and a common mechanism in operative relation with each of said hangers for by downward pressure simultaneously actuating said hangers and brakes, sub stantially as described. I
In testimony whereof I have signed my name, this 13th day of April, in the year one thousand nine hundred and twenty-one.
I-IUGH SANFGRD.
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