Apparatus for interlocking throttle, dynamic brake and reverser handles on a control stand of a railway locomotive
First Claim
1. Apparatus for interlocking independent control handles for throttle action, dynamic brake action and reverser action, within a control stand for a railway locomotive comprising:
- a first pivotal lever handle for controlling throttle action secured to a first rotatable axle,a second pivotal lever handle for controlling dynamic brake action secured to a second rotatable axle spaced from and substantially parallel to said first rotatable axle,a third pivotal lever handle for controlling reverser action secured to a third rotatable axle spaced from and substantially parallel to said first and second rotatable axles, said third pivotal lever handle being pivotal to three positions, a central neutral position and forward and reverse positions at either end,a first cam disk substantially perpendicularly mounted to said first axle for rotation therewith, a periphery of said first cam disk is defined by at least a partial cylindrical first surface radially spaced from said first axle, and a partial concave second surface adjacent to said at least partial cylindrical first surface,a second cam disk substantially perpendicularly mounted to said second axle for rotation therewith, a periphery of said second cam disk is defined by at least a partial cylindrical first surface radially spaced from said second axle, and a partial concave second surface adjacent to said at least partial cylindrical first surface,said first and second cam disks being disposed substantially in a common plane and directly adjacent to one another such that said concave second surface of each cam disk is directly opposed one another, so that only one of said first and second pivotal lever handles can be pivoted at any given time by virtue of said first cylindrical surface on an associated cam disk moving into engagement with an opposed concave second surface of an adjacent cam disk,a first stop means associated with said third axle adapted to block pivotal rotation of said first pivotal lever handle when said third pivotal lever handle is in any position other than forward, reverse and neutral, anda second stop means associated with said third axle adapted to block pivotal rotation of said second pivotal lever handle when said third pivotal lever handle is in any position other than forward and reverse.
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Accused Products
Abstract
Apparatus for interlocking independent control handles for throttle, dynamic brake and reverser, within a control stand for a railway transit vehicle including:
a first cam disk perpendicularly mounted to the throttle handle axle for rotation therewith, the periphery of which is defined by at least a partial cylindrical first surface radially spaced from the first axle, and a partial concave second surface adjacent to the partial cylindrical first surface,
a second cam disk of substantially similar configuration perpendicularly mounted to the dynamic brake handle axle for rotation therewith,
the first and second cam disks being disposed in a common plane and directly adjacent to one another such that the concave second surfaces of each cam disk are directly opposed one another, so that only one of the throttle or dynamic brake handles can be pivoted at any given time by virtue of the first cylindrical surface on the associated cam disk moving into engagement with the opposed concave second surface of the adjacent cam disk, and
a first and stop means associated with the reverser axle adapted to block pivotal rotation of the throttle handle when the reverser handle is in any position other than forward, reverse and neutral, and a second stop means adapted to block pivotal rotation of the dynamic brake handle when the reverser handle is in any position other than forward and reverse.
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Citations
20 Claims
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1. Apparatus for interlocking independent control handles for throttle action, dynamic brake action and reverser action, within a control stand for a railway locomotive comprising:
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a first pivotal lever handle for controlling throttle action secured to a first rotatable axle, a second pivotal lever handle for controlling dynamic brake action secured to a second rotatable axle spaced from and substantially parallel to said first rotatable axle, a third pivotal lever handle for controlling reverser action secured to a third rotatable axle spaced from and substantially parallel to said first and second rotatable axles, said third pivotal lever handle being pivotal to three positions, a central neutral position and forward and reverse positions at either end, a first cam disk substantially perpendicularly mounted to said first axle for rotation therewith, a periphery of said first cam disk is defined by at least a partial cylindrical first surface radially spaced from said first axle, and a partial concave second surface adjacent to said at least partial cylindrical first surface, a second cam disk substantially perpendicularly mounted to said second axle for rotation therewith, a periphery of said second cam disk is defined by at least a partial cylindrical first surface radially spaced from said second axle, and a partial concave second surface adjacent to said at least partial cylindrical first surface, said first and second cam disks being disposed substantially in a common plane and directly adjacent to one another such that said concave second surface of each cam disk is directly opposed one another, so that only one of said first and second pivotal lever handles can be pivoted at any given time by virtue of said first cylindrical surface on an associated cam disk moving into engagement with an opposed concave second surface of an adjacent cam disk, a first stop means associated with said third axle adapted to block pivotal rotation of said first pivotal lever handle when said third pivotal lever handle is in any position other than forward, reverse and neutral, and a second stop means associated with said third axle adapted to block pivotal rotation of said second pivotal lever handle when said third pivotal lever handle is in any position other than forward and reverse. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification