US728130A - Combination wheel and rail brake. - Google Patents

Description

PATBNTED MAY 12, 1903.

J. REDMOND. COMBINATION WHEEL AND RAIL BRAKE.

' APPLICATION FILED JULY 25, 1902.

N0 MODEL.

' UNTTED STATES iatented May 12, 1903.

JOHN REDMQND, OF FAIRCHANOE, PENNSYLVANIA.

FCOMBINATION WHEEL AND RAIL BRAKE.

SPECIFICATION forming part of Letters Patent 1N 0. 728,130, dated Mayj12, 1903.

Application filed m 25, 1902". Serial No. 116,899. mo model.)

To all whom it may concern.-

Be it known that I, JOHN REDMOND, a citizen of the United States of America, residing.

at Fairchance, in the county of Fayette and State of Pennsylvania, have invented'certain new and useful Improvements in Combination Wheel and Rail Brakes, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and V to the wheel-brake, whereby as the said trackbrake is lowered into engagement with the rails it will automatically force the wheelbrake into engagement with t-herails.

Briefly described, my invention consists of a pair of wheel-brake shoes which are suspended from a common brake-beam and a pair of track-brake shoes hinged to the said wheel-brake shoes. Connected to the wheelbrake shoes are cables. These cables have their upper ends connected to a common winding-shaft operated by a lever at the front of the car.

This construction will be hereinafter more specifically referred to and then particularly claimed, and in describing the inventionain detail reference is bad to the accompanying drawings, forming a part of this specification, and wherein like numerals of reference indicate like parts throughout the severalviews, in which- V Figure 1 is a view in side elevation of the front car-truck, partially in section and showing my improvement securedin position. Fig. 2 is a sectional view taken on line 2 2 of Fig. 1. Fig. 3 is a'detail View of the windingdrum lever; and Fig. 4: is a top plan View of the brake-shoes and the shaft to which the same are connected, the wheels and car-platform being removed.

1 indicates the wheel-brake shoes, which have their inner faces curved to conform to the curvature of the wheels periphery and their rear faces provided with an approximately U-shaped recess to receive the brakebeam 2.

are 'both' provided on their'lowerfaces'with flanges 6 to engage the rail -grooveand have "their rear ends inclined, as at], to conform to the curvature of the outer face of the brake-shoes 1,'so-that when the brake isin the position shown "inFig." Ithe rear end of the said track-brake shoe will bear evenly thereagainst;

8 indicates cables having their lower ends secured to the brake-shoes 1 and their upper ends secured to the transversely-arranged shaft 9, journaled in the brackets 10, secured to the car-platform.

11 indicates a quadrantrigidly fixed on the shaft 9 and having connected thereto the cable 12, which is wound on the shaft 13, journaled in the approximately U -shaped bracket 14, secured to the forward end of the car-platform. I

15 and 16 designate ratchet-wheels secured to the shaft 13 on oppositefsidesof the bracket 14, which ratchet-wheels have their teeth arranged in oppos'itedirections, as is clearly shown in Figs; 1 and 3 of-the drawings.

17 indicates a pawl pivoted to one arm of thebracketl and provided with an operating-arm extending through the opening 18 in the car-platform. This pawl engages the ratchet-wheel 15 and has the upper end of its operating-arm provided'with an enlarged head 19. 7

20 indicates the operating-lever for shaft 13 and has its lower end loosely mounted thereon. 21 indicates a pawlpivotally mounted on the said lever, which pawl is operated-by the link 22. c

In operation the operating-lever 20 is oscillated, and during the forward movement thereof the pawl 21 will engage the teethof the ratchet-wheel 16, thereby rotating the shaft 13 and winding the cable 12, and consequently elevating the brake-shoe. When it is desired to apply the brakes, the operating-arm 18 of the pawl 17 is depressed, thereby throwing the pawl 17 out of engagement with the ratchet-wheel 15, whereby the shaft 13 is permitted to rotate, (the pawl 21 riding over the teeth of its ratchet-wheel,) and the brake will be lowered by gravity into engagement with the wheels and rails, as heretofore described.

It will be noted that Various changes may be made in the details of construction without departing from the general spirit of my invention.

Having fully described myinvention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a car-brake, the combination of the wheel-shoes, track-shoes pivotally secured to the said Wheel-shoes, said track-shoes being adapted to engage the rails and thereby force the Wheel-shoes into engagement with the Wheels,and means for throwing the said brakeshoes into and out of operation, substantially as described.

2. In a combined wheel and track brake, the combination with the wheel-engaging shoes,

of track-engaging shoes pivotally secured to the said Wheel-shoes, and having their rear ends inclined to conform to the curvature of the outer face of the said Wheel-shoes, abrakebeam secured to the said Wheel-shoes, means for raising the said brake-shoes, means for locking said shoes in their raised position, and means for releasing the same whereby they will be lowered by gravity, said trackshoes being adapted to engage the rails Whereby the Wheel-engaging shoes are forced into engagement with the Wheel, substantially as described.

In testimony whereof I affix my signature in the presence of two Witnesses.

JOHN REDMOND.

Witnesses:

JOHN NOLAND, E. E. POTTER.

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