US1328494A - Brake-operating mechanism - Google Patents

Description

J. A. CARNEY.

BRAKE OPERATING MECHANISM.

APPLICATION FILED Aue.31.1914.

1,328,494, Patented Jan.20,1920.

3 SHEETS-SHEET I.

J. A. CARNEY.

BRAKE OPERATING MECHANISM.

APPLIICATION FILED Aue.sl. 1914.

v 1 ,328,49l, Patented Jan. 20, 1920.

3 SHEETS-SHEET 2.

p "ll" WZZZeJJeS 1 5 m 3 SHEETS-SHEET 3- Patented Jan. 20, 1920.

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BRAKE OPERATING MECHANISM.

APPLICATION FILED AUG 3| I914 7 .ZZhaewrorv a/WeJL/K 6 4271 JAMES A. CARNEY, OF AURORA, ILLINOIS.

Specification of Letters Patent.

BRAKE-OPERATING MECHANISM.

Patented J an. 20, 1920.

Application filed August 31, 1914. Serial No. 858,390.

To all whom it may concern:

Be it known that 1, JAMES A. CARNEY, a citizen of the United States, residing at Aurora, in the county of Kane and State of Illinois, have invented certain new and useful Improvements in Brake-Operating Mechanism, of which the following is a specification.

This invention relates to improvements in brake operating mechanism. The main object of this invention is to provide a construction adapted to be attached to a railway car and especially adapted to be attached to that type of passenger or other car having no platform.

A further object consists in providing and arranging the structure in combination with the end wall of the car to operate the brake mechanism may be operated from within or and exteriorly of the car so that the brake mechanism may be operated from within or without the car with equal facilities.

Still another object is to provide brake operating mechanism which comprises operating levers or the like coacting with a ratchet wheel and drum which are operatively connected to the brake mechanism, also including means .to permit winding of the drum in one direction and to prevent its re-rotation or unwinding, the mechanism being arranged and constructed so that proper movement of the operating levers or the like will effect release of the holding means.

These and other objects will be more fully set forth and described in the following specification and accompanying drawings, in which;

Figure 1 is a side elevation of my improved structure as applied to the end wall of a car;

Fig. 2 is an end elevation of the same;

Fig. 3 is a perspective of the bracket or frame;

Fig. 4 is a perspective of the drum and shaft detail;

Figs. 5 and 6 are perspectives of the detent and pawl, respectively.

Fi 7 is a sectional view taken line 7 of Fig. 2.

Fig. 8 is a sectional view of a modification for use where it is inconvenient to use an inside lever.

Fig. 9 is a detail of the same; and

Fig. 10 is a perspective view of the modified form.

along the Like numerals refer to like elements throughout the drawings, in which 10 de notes the end wall of the car to which are applied the plates 11, 12, on either side thereof. A frame or bracket generally in dicated by numeral. 13 is provided, as shown in Fig. 3, this bracket being provided with the base portion 13 and offset bearing portion 13 integrally formed therewith, the angularly disposed portion 13 connecting the portions 13 13". To insure rigidity and strength I provide a rib 13 integrally formed with and extending between the portions 13 13. The portion 13 is provided with the apertured bearing portion 13 and the outwardly projecting flange 13* adjacent thereto. A boss 13 is provided adjacent the juncture of portions 13, 13, this boss being apertured and internally threaded as indicated by numeral 13 When assembled, bolts 14L extend through apertures 13 in base portion 13 through the plates 11, 12 and the end wall 10 of the car serving to secure the frame 13 thereto, as shown in Fig. 1. A shaft 15 extends transversely through the wall 10 and is journaled adjacent one extremity in the bearing collar 16 which rests against the plate 11. Attached to the shaft 15 adjacent collar 16, and outwardly thereof is the hub 17 of operating lever 17, a key 18 serving to secure the shaft and lever against relative rotation. The end of the shaft 15 is reduced and threaded at 15* and a nut 19 is threaded thereon to hold the lever 17 attached thereto.

A drum 20 is rotatably mounted on shaft 15 outwardly of the plate 12, as shown in Figs. 1 and ft, and this drum 20 carries an eye. Or shackle 21 for engagement with the chain of the usual brake mechanism. This drum is journaled in the aperture 13 of bracket 13 and outwardly thereof is provided with the ratchet wheel 22. The shaft 15 extends through the drum 20 and ratchet wheel 22 and attached adjacent its outer extremity is the operating lever 23 secured thereto by key 24 and prevented from re moval therefrom by nut 25 threaded on the reduced end 15 of shaft 15. Pivot-ally attached to lever 23 below the ratchet wheel 22 is the pawl 26 attached thereto by means of the bolt 27. This pawl 26 is provided with the extended cam portion 26* normally serving to maintain the forward end 26 in engagement with the ratchet wheel The lever 23 is continued upwardly of the shaft 15 and is provided with the inturned flange 23. A bolt or pin 30 is threaded into the aperture 13 in bracket 13 and a detent 31 is pivotally mounted thereon, this detent being provided with the tooth 51 and rear cam arm 31, the arrangement being such that tooth 31 will normally engage toothed ratchet wheel as shown in Fig. 2. The detent 31 is located beneath the overhanging flange .23 of lever 23, such flange being ,provided with the inclined under-surface 23% see Fig. 2. The arrangement of the above described mechanism is such that movement of the lever in the direction indicated by the arrow in Fig. 2 results in the rotation of the ratchet wheel 22 in the direc-- t-ion indicated, operating through the me dium of drum 20 to wind up the brake chain, not shown, and thereby apply the brakes. Reverse oscillation of this lever 23 will cause the pawl 26 to slip over the ratchet 22 in a usual well known manner while the litter is held against reverse rotation by means of the detent 31 so that repeated oscillations of lever 23 will operate to apply the brakes and the detent 31 will serve to prevent their release until desired.

l Vhen it is desired to release the brakes the lever 23 is swung or rotated in a direction opposite to that of the arrow until can: arm 26 contacts with the near face of shonlder or flange 13 when the latter will cause positive disengagement of the pawl 26 from the ratchet wheel 22. At the same time the inclined face 23" of flange 1,) '1; n U ()1 e\ w]. LU will contact with the cam face 31 of detent 31 and will effect a oositive disengagement of such detent. It will be apparent that both the pawl and detent having been positively disengaged from ratchet wheel 22, the latter will be allowed to unwind, causing re lease of the brakes.

The same operation may be performed by operation of the lever 17 on the interior of the car so that I have provided mechanism. operable from either inside or outside of the car and therefore especially adapted for attachment to the end. wall of cars having no platforms or freight cars whu'e projection of brake levers and hand wheels above the top of the car is undesirable. It will be ob Vious that the lever 17 may be omitted if so desired.

In Figs. 8, 9, 10, 1 have shown a modification especially adapted for use on freight cars and where it is desirable to econo::.. [.e. the cost of manufacture being considerably less. The shaft 15 is journaled plates 16 and bracket 13 carried by the end wall of the car and to this shaft is attached the chain. which operates the brake mechanism proper. The ratchet wheel 22 is keyed or similarly secured to the shaft as shown in the, drawings. The, operating lever 28 is rotatably mounted on the shaft 15 and carries the pawl 26 as in the embodiment shown in Figs. 1 and 6. The detent 31' is similar to and operates in the same manner as in the other construction. The operation of this modification differs only in that lever 23 rotates on shaft 15 while ratchet wheel 22 is secured thereto and operates to wind up the chain directly thereon.

It will also be obvious that my device is susceptible of many modifications and improvements, and I do not wish to be restricted to the showing or description beyond the scope of the appended claims.

I claim- 1. In a device of the class described, a bracket member adapted to be attached to a car wall, a. shaft supported by said bracket member, a drum rotatably mounted on said shaft, a ratchet wheel carried by said drum, a lever mounted on said shaft adjacent said ratchet wheel and normally depending therefrom, a pawl pivoted on said lever and actuated by gravity to engage normally said ratchet wheel whereby rotation of said lever in one direction will rotate said ratchet wheel, a detent member to prevent reverse rotation of said ratchet wheel, and means carried by said lever independently of said pawl to disengage said detent upon abnormal throw of said lever.

2. In a brake-operating mechanism, a bracket adapted to be attached to a car wall, a shaft supported by said bracket, a drum rotatably mounted on said shaft, a ratchet wheel carried by said drum, a lever mounted on said shaft adjacent said ratchet wheel and normally depending therefrom, a pawl pivoted on said lever and actuated by gravity to engage normally said ratchetwheel whereby rotation of said lever in one direction will rotate said ratchet wheel, a detent member movably mounted adjacent said ratchet wheel and actuated by gravity to normally engage the same and prevent reverse rotation thereof, and a transverse flange projecting from said lever to coiipcrate with said detent and disengage the same from said ratchet upon reverse movement of said lever.

3. In a device of the class described, a bracket adapted to be attached to a car wall, a ratchet member supported. b y said bracket, an operating member, means carried by said operating member for engaging said ratchet member to rotate the same upon proper movement of said operating member in one direction, a pivotally mounted detent moi ber arranged to hold said ratchet member normally against reverse rotation, said detent member comprising a cam portion and a toothed portion oppositely disposed with respect to the pivotal of said member, and means carried by and relatively fixed with respect to said operating member to coact with said cam portion and disengage said detent member upon proper movement of said operating member.

4. In a device of the class described, a bracket adapted to be secured to the car wall and having a bearing portion offset from and parallel to said car wall, a horizontally extending shaft engaging said car wall and extending through said bearing portion, a drum journaled in said bearing portion and rotatably mounted on said shaft, a ratchet wheel carried by said drum, an operating lever mounted on said shaft adjacent said ratchet wheel, a pawl pivoted on said lever and arranged to normally engage said ratchet wheel, a detent pivoted on said offset portion of said bracket'and arranged normally to prevent reverse rotation of said ratchet wheel, and a member carried by said lever and arranged to disengage said detent upon abnormal throw of said. lever.

5. In a device of the class described, a bracket adapted to be secured to a car "all and having an off-set bearing portion, a rotatable shaft extending through said car wall and through said bearing portion, a drum journaled in said bearing portion and rotatably mounted on said shaft, a ratchet wheel carried by said drum, an operating lever secured to said shaft adjacent said ratchet wheel, a pawl pivoted on said lever and arranged to normally engage said ratchet wheel to rotate the same upon proper rotation of said lever, adetent to prevent re verse rotation of said ratchet wheel, and a second operating lever secured to said shaft on the side of said wall. opposite said first named lever.

6. In combination with end wall, a shaft extending through and rotatable in said end wall, an operating lever secured to said shaft on one side of said wall and normally depending therefrom, a drum rotatably mounted on said shaft, a ratchet wheel carried by said drum adjacent said lever, a pawl pivoted on said lever below said ratchet wheel and actuated by gravity to normally engage the same, whereby rotation of said lever in one direc tion will rotate said ratchet wheel, a detent to prevent reverse rotation of said ratchet wheel, a member mounted adjacent said ratchet wheel to coact therewith and disengage said pawl upon abnormal throw of said lever, and a second lever secured to said shaft for operating said ratchet wheel from the other side of said wall.

7 In combination with a car having an end wall, a shaft extending through and rotatable in said end wall, an operating lever attached to said shaft on one side of said wall, a drum rotatably mounted on said shaft, a ratchet wheel carried thereby, a second lever attached to said shaft adjacent said ratchet wheel, a pawl pivotally attached a car having an to said second named lever normally engag ing said ratchet wheel, a pivotally mounted detent normally engaging said ratchet wheel whereby proper rotation of either of said levers will rotate said ratchet wheel in one direction, said detent serving to normally prevent reverse rotation, means to positively disengage said pawl from engagement with said ratchet wheel upon proper movement of said levers, and means carried by said second named lever to positively disengage said detent upon such last named movement of said levers.

8. In a device of the class described, a pair of levers mounted one on each side of a car wall, a shaft extending through said wall and engaging said levers, a ratchet mounted adjacent one of said levers, a pawl mounted on said last-named lever and arranged to engage said. ratchet, brake operating means arranged to be actuated by said ratchet, the operation of either of said levers being arranged to operate said ratchet by means of said pawl. and means mounted adjacent said ratchet wheel and adapted to coact directly with said pawl upon abnormal throw of said first named lever for disengaging said pawl from said ratchet wheel.

9. In a device of the class described, a bracket adapted to be attached to a car wall. a rotatable shaft extending through said car wall and through said bracket, a ratchet mounted on said bracket concentrically with said shaft, an operating lever secured to sand shaft adjacent said ratchet wheel, a pawl pivoted onsaid lever and arranged to engage said ratchet wheel to rotate the same upon proper rotation of said lever, a second lever secured to said shaft on the side of said car wall opposite said first-named lever, brake operating connections extending to said ratchet, and a laterally extending flange carried by said bracket to coact directly with said pawl and disengage the same from said ratchet wheel upon abnormal throw of said first named lever.

10. A ratchet actuating mechanism comprising in combination, a shaft, supports in which said shaft is rotatably mounted, a hand lever secured to said shaft, a pawl pivotally carried by said lever, a drum rotatably mounted on said shaft, a ratchet wheel attached to said drum and having its peripheral teeth lying in the path of said pawl, a locking pawl carried by the shaft support and normally engaging the teeth of the ratchet wheel to prevent backward rotation of said drum, and a second lever fixed to said shaft at a point removed from said first named lever, whereby said shaft may be rotated by said second named lever and said first named lever and connected mechanism thereby operated, said first named lever having a part adapted to directly engage said locking pawl to move the same out of engagement with said ratchet wheel.

11. In a device of the class described, a bracket adapted to be secured to a car wall and having an off-set bearing portion, a shaft extending through said bearing portion, a drum journaled in said bearing portion and rotatably mounted on said shaft, a ratchet wheel carried by said drum on the opposite side of said bearing portion from the body of said drum, an operating lever on said shaft adjacent said ratchet wheel, a pawl pivoted on said lever and arranged to normally engage said ratchet wheel, a detent normally engaging said ratchet wheel to prevent reverse rotation thereof, means carried by said lever to disengage said de tent from said ratchet wheel upon abnormal throw of said lever, and means carried by said bracket to disengage said pawl from said ratchet wheel upon abnormal throw of said lever.

12. In a device of the class described, a bracket adapted to be secured to a car wall and having an off-set bearing portion, a shaft extending through said bearing portion, a drum journaled in said bearing portion and rotatably mounted on said shaft, a ratchet wheel carried by said drum, an operating lever on said shaft adjacent said ratchet Wheel, a pawl pivoted on said lever and arranged to normally engage said ratchet wheel, a detent normally engaging said ratchet wheel to prevent reverse rotation thereof, a transverse flange carried on said lever to coact with said detent and move the same out of engagement with said ratchet wheel upon abnormal throw of said lever, and a transverse flange carried by said bracket to coact with said pawl and disengage the same from said ratchet wheel upon abnormal throw of said lever.

In testimony whereof, I have subscribed my name.

JAMES A. CARNEY.

Witnesses:

E. J. BABBITT, C. W. ROBERTSON.

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