Safety shutdown device for stationary diesel engines

Claim 2

An accessory (10) for connection to the rack gear (308) of an internal combustion engine(300), said rack gear being movable in one Direction to effect engine shutdown in the event of an engine malfunction, said accessory comprising: first means (60, 400) connected with said rack gear (308) for moving said rack gear in said one direction to effect said engine shutdown; second means (110, 118, 124, 126, 128) connected with said first means for constantly biasing said first means for movement in said one direction.; third means (82, 64, 94) connected with said first means for releasably latching said first means against said movement; fourth means (166, 168, 170, 172) for actuating said third means to effect release of said first means enabling it and said rack gear to move under said bias in said one direction and to effect said engine shut down; fifth means (220) for operatively connecting sixth means (234, 236, 254), monitoring said engine for malfunction, with said fourth means for automatically actuating said fourth means upon detection of an engine malfunction; a source of electrical energy; said fourth means includes a normally closed deenergized first electrical circuit (254, 166, 256, 180, 258, 260, 262); seventh means (219) disposed in said first electrical circuit for connecting said first electrical circuit with said source of electrical energy; and wherein said sixth means includes a second normally open electrical circuit connected in series with said first electrical circuit, said sixth means closing upon detection of an engine malfunction and to thereby energize said first electrical circuit.

Claim 3

An accessory as defined in claim 1 wherein; movement of said first means in said one direction actuates an element (180) of said fourth means for deenergizing said circuits.

Claim 4

An accessory as defined in claim 2 wherein: said element comprises a normally closed first switch connected in said first circuit and actuated to its open position by movement of said first means in said one direction.

Claim 5

An accessory as defined in claim 3 and: eighth means operatively connected with said fourth means and comprising a third electric circuit (G, 226, B, 228, 219, 254, 166, 256, 180, 258, 260, 216, 264, G3) having a normally open manually operable switch connected therein movable to its closed position to energize said first and third circuits to effect the actuation of said fourth means.

Claim 6

An accessory as defined in claim 1 and; a base (14); and wherein said first means comprises a drawbar (60), means (50) fixedly connected on said base and supporting said drawbar for reciprocation thereon, and a flexible cable (400) for connecting one end of said drawbar with one end of said rack gear. 6 An accessory as defined in claim 1 and; said third means includes a latch pin (82) mounted on a lever (80) which is pivotally supported on said base and releasably connected with means (64) on said drawbar to hold said drawbar against movement in said one direction under the influence of said spring, and means (94) pivotally supported on said base and including means (106) releasably engaging said latch pin and cooperating with said drawbar means for releasably engaging said latching said pin thereon, and means (174) on said pivotally supported means for connection with said fourth means.

Claim 7

An accessory (10) for connection to the rack gear (308) of an internal combustion engine (300), said rack gear being movable in one direction to effect engine shutdown in the event of an engine malfunction, said accessory comprising; first means (60, 400) connected with said rack gear (308) for moving said rack gear in said one direction to effect said engine shutdown; second means (110, 118, 124, 126, 128) connected with said first means for constantly biasing said first means for movement in said one direction; third means (82, 64, 94) connected with said first means for releasably latching said first means against said movement; fourth means (166, 168, 170, 172) for actuating said third means to effect releaSe of said first means enabling it and said rack gear to move under said bias in said one direction and to effect said engine shutdown; fifth means (220) for operatively connecting sixth means (234, 236, 254), monitoring said engine for malfunction, with said fourth means for automatically actuating said fourth means upon detection of an engine malfunction; a base (14); and wherein said first means comprises a drawbar (60) means (50) fixedly connected on said base and supporting said drawbar for reciprocation thereon, and a flexible cable (400) for connecting one end of said drawbar with one end of said rack gear; and wherein said second means comprises an elongated rod (110) fixedly supported on said base, a slide block (118) mounted for reciprocation on said rod, means (124) connecting said drawbar on said slide block for reciprocation therewith, and a spring (126) mounted on said rod and engaging said slide block to constantly bias said slide block and its connected drawbar for movement in said one direction.

Claim 8

An accessory (10) for connection to the rack gear (308) of an internal combustion engine (300), said rack gear being movable in one direction to effect engine shutdown in the event of an engine malfunction, said accessory comprising; first means (60, 400) connected with said rack gear (308) for moving said rack gear in said one direction to effect said engine shutdown; second means (110, 118, 124, 126, 128) connected with said first means for constantly biasing said first means for movement in said one direction; third means (82, 64, 94) connected with said first means for releasably latching said first means against said movement; fourth means (166, 168, 170, 172) for actuating said third means to effect releaSe of said first means enabling it and said rack gear to move under said bias in said one direction and to effect said engine shutdown; fifth means (220) for operatively connecting sixth means (234, 236, 254), monitoring said engine for malfunction, with said fourth means for automatically actuating said fourth means upon detection of an engine malfunction; a base (14); and wherein said first means comprises a drawbar (60) means (50) fixedly connected on said base and supporting said drawbar for reciprocation thereon, and a flexible cable (400) for connecting one end of said drawbar with one end of said rack gear; and wherein said second means comprises an elongated rod (110) fixedly supported on said base, a slide block (118) mounted for reciprocation on said rod, means (124) connecting said drawbar on said slide block for reciprocation therewith, and a spring (126) mounted on said rod and engaging said slide block to constantly bias said slide block and its connected drawbar for movement in said one direction.

Claim 9

An accessory (10) for connection to the rack gear (308) of an internal combustion engine (300), said rack gear being movable in one direction to effect engine shutdown in the event of an engine malfunction, said accessory comprising: first means (60, 400) connected with said rack gear (308) for moving said rack gear in said one direction to effect said engine shutdown; second means (110, 118, 124, 126, 128) connected with said first means constantly biasing said first means for movement in said one direction; Third means (82, 64, 94) connected with said first means for releasably latching said first means against said movement. fourth means (166, 168, 170, 172) for actuating said third means to effect release of said first means enabling it and said rack gear to move under said bias in said one direction and to effect said engine shutdown; fifth means (220) for operatively connecting sixth means (234, 236, 254) monitoring said engine for malfunction, with said fourth means for automatically actuating said fourth means upon detection of an engine malfunction; said third means includes a latch pin (82) mounted on a lever (80) which is pivotally supported on said base and releasably connected with means (64) on said drawbar to hold said drawbar against movement in said one direction under the influence of said spring, and means (94) pivotally supported on said base and including means (106) releasably engaging said latch pin and cooperating with said drawbar means for releasably latching said pin thereon, means (174) on said pivotally supported means for connection with said fourth means; and wherein said pivotal support means comprises a lever (94) having a notch (106) formed therein cooperating with said drawbar means (64) to hold said latch pin against movement and thus holding said drawbar against movement in said one direction; and said fourth means includes an electromagnet having a coil and an armature mounted for reciprocation therein, a stop pin extending transversely across said armature projecting from opposite sides thereof; resilient means on said armature engaging said stop pin and biasing said armature for movement away from said coil, connecting said lever to effect pivotal movement thereof upon energization of said coil and to thereby effect release of said latch pin.

Claim 10

An accessory (10) for connection to the rack gear (308) of an internal combustion engine (300), said rack gear being movable in one direction to effect engine shutdown in the event of an engine malfunction, said accessory comprising: first means (60, 400) connected with said rack gear (308) for moving said rack gear in said one direction to effect said engine shutdown; second means (110, 118, 124, 126, 128) connected with said first means constantly biasing said first means for movement in said one direction; Third means (82, 64, 94) connected with said first means for releasably latching said first means against said movement. fourth means (166, 168, 170, 172) for actuating said third means to effect release of said first means enabling it and said rack gear to move under said bias in said one direction and to effect said engine shutdown; fifth means (220) for operatively connecting sixth means (234, 236, 254) monitoring said engine for malfunction, with said fourth means for automatically actuating said fourth means upon detection of an engine malfunction; said third means includes a latch pin (82) mounted on a lever (80) which is pivotally supported on said base and releasably connected with means (64) on said drawbar to hold said drawbar against movement in said one direction under the influence of said spring, and means (94) pivotally supported on said base and including means (106) releasably engaging said latch pin and cooperating with said drawbar means for releasably latching said pin thereon, means (174) on said pivotally supported means for connection with said fourth means; and wherein said pivotal support means comprises a lever (94) having a notch (106) formed therein cooperating with said drawbar means (64) to hold said latch pin against movement and thus holding said drawbar against movement in said one direction; and said fourth means includes an electromagnet having a coil and an armature mounted for reciprocation therein, a stop pin extending transversely across said armature projecting from opposite sides thereof; resilient means on said armature engaging said stop pin and biasing said armature for movement away from said coil, connecting said lever to effect pivotal movement thereof upon energization of said coil and to thereby effect release of said latch pin.