Combination fluid pressure and electric trip cock emergency brake apparatus for railway vehicles
First Claim
1. In railway vehicle brake apparatus including a brake pipe extending the length of a train operable on a railroad right-of-way and in which the brake pipe is normally charged with fluid at a predetermined pressure and is effective, upon a reduction of pressure therein, for causing a brake application on the train according to the degree of such brake pipe pressure reduction, the combination of:
- a. actuating means effective when energized for concurrently cutting off vehicle propulsion power and causing a reduction of brake pipe pressure;
b. first energizing means connected to said actuating means and operable from a normally open position, in which said actuating means is deenergized, to a closed position for effecting energization of said actuating means;
c. second energizing means connected to said actuating means in parallel relation with and operable independently of said first energizing means from a normally open position, in which said actuating means is deenergized, to a closed position for effecting energization of said actuating means; and
wherein the improvement comprises;
d. a trip cock device mounted on the vehicle and including;
i. dual operating means comprising two operating portions each operable from a neutral position to an operating position for effecting operation of said first and second energizing means, respectively and independently of each other, to their respective closed positions; and
ii. trip means operably engaging said two operating portions of the dual operating means and effective, when tripped out of a neutral position, for concurrently operating said two operating portions to their respective operating positions.
7 Assignments
0 Petitions
Accused Products
Abstract
Combination fluid pressure and electric operable trip cock emergency brake apparatus for use with railway vehicles including a trip cock device having a fluid pressure portion and an electrical portion, both operable concurrently, when a trip lever thereon is actuated by a trip arm located on the roadway, for providing concurrent fluid pressure and electrical pilot signals to cause operation of a common control switch which in turn, when so operated, actuates propulsion and brake control devices to cause propulsion power to be cut off and an emergency brake application to be effected concurrently. The fluid pressure and electric portions of the trip cock device complement each other to insure that one or the other, if not both, will effect the desired results in an emergency situation.
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Citations
6 Claims
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1. In railway vehicle brake apparatus including a brake pipe extending the length of a train operable on a railroad right-of-way and in which the brake pipe is normally charged with fluid at a predetermined pressure and is effective, upon a reduction of pressure therein, for causing a brake application on the train according to the degree of such brake pipe pressure reduction, the combination of:
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a. actuating means effective when energized for concurrently cutting off vehicle propulsion power and causing a reduction of brake pipe pressure; b. first energizing means connected to said actuating means and operable from a normally open position, in which said actuating means is deenergized, to a closed position for effecting energization of said actuating means; c. second energizing means connected to said actuating means in parallel relation with and operable independently of said first energizing means from a normally open position, in which said actuating means is deenergized, to a closed position for effecting energization of said actuating means; and wherein the improvement comprises; d. a trip cock device mounted on the vehicle and including; i. dual operating means comprising two operating portions each operable from a neutral position to an operating position for effecting operation of said first and second energizing means, respectively and independently of each other, to their respective closed positions; and ii. trip means operably engaging said two operating portions of the dual operating means and effective, when tripped out of a neutral position, for concurrently operating said two operating portions to their respective operating positions. - View Dependent Claims (2, 3, 4, 5, 6)
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Specification