Lawn sprinkler alarm

Claim 2

A warning signal lawn sprinkler device comprising, in combination, a water supply conduit, a spray head operatively connected to said supply conduit, air vent means for discharging air from said device responsive to the flow of water into said supply conduit, and alarm signal means for sounding an alarm (responsive to air flow in said vent means), said signal means being powered by movement of air in said vent means.

Claim 3

A warning signal lawn sprinkler device comprising a water supply conduit leading to a spray head and air activated alarm means operatively connected to said conduiT for sounding an alarm signal (responsive to the expulsion of air), said alarm means being energized by the movement of air expelled from said conduit.

Claim 4

A warning signal lawn sprinkler device comprising a water supply conduit leading to a spray head and air activated alarm means operatively connected to said conduiT for sounding an alarm signal (responsive to the expulsion of air), said alarm means being energized by the movement of air expelled from said conduit.

Claim 5

A device in accordance with claim 2 and including drain means in said conduit at a position remote from said head for draining water from the portions of said conduit between the head and drain means, thus to introduce air into said portions.

Claim 6

A device in accordance with claim 3 wherein said drain means comprises a valve which is closed responsive to the introduction of pressure into said conduit and opened responsive to interruption of said pressure.

Claim 7

A warning signal lawn sprinkler device comprising a main water supply conduit, a spray head connected to said conduit, an air exhaust outlet connected to said conduit, air-activated alarm means in said exhaust outlet for producing a warning sound responsive to passage of air through said outlet, and valve means interposed between said spray head and conduit to seal said spray head and thus divert air entrapped in said sprinkler to said exhaust outlet, said valve means connecting said conduit to said spray head when exposed to water from said supply conduit.

Claim 8

A warning signal lawn sprinkler device comprising a main water supply conduit, a spray head connected to said conduit, an air exhaust outlet connected to said conduit, air-activated alarm means in said exhaust outlet for producing a warning sound responsive to passage of air through said outlet, and valve means interposed between said spray head and conduit to seal said spray head and thus divert air entrapped in said sprinkler to said exhaust outlet, said valve means connecting said conduit to said spray head when exposed to water from said supply conduit.

Claim 9

A device in accordance with claim 5 wherein said valve means seals said exhaust outlet when said conduit is connected to said spray head.

Claim 10

A device in accordance with claim 5 and including means in said conduit for introducing air in said conduit behind said valve when water pressure is interrupted in said water supply conduit.

Claim 11

A device in accordance with claim 7 wherein said means for introducing air comprises a drain valve which is closed when said main conduit is pressurized and open when said main conduit is not pressurized.

Claim 12

In a sprinkler device or the like including a main conduit leading to a spray head, an air-activated alarm comprising a chamber having an air vent opening communicating with said conduit, an escape aperture in said chamber, whistle means for producing sound energized by movement of air through said aperture, and float means in said chamber for sealing said aperture responsive to the admission of water into said chamber.

Claim 13

In a sprinkler device or the like including a main conduit leading to a spray head, an air-activated alarm comprising a chamber having an air vent opening communicating with said conduit, an escape aperture in said chamber, whistle means for producing sound energized by movement of air through said aperture, and float means in said chamber for sealing said aperture responsive to the admission of water into said chamber.

Claim 14

A device in accordance with claim 9 wherein said float means modulates the air flow through said aperture prior to filling of said chamber.

Claim 15

A warning signal lawn sprinkler device comprising a main conduit member, a spray head member movably mounted on said conduit member and positioned to receive fluid passing through said conduit member, means for moving said spray head member relative to said conduit member from a depressed, dormant position to an extended watering position responsive to the admission of water under pressure into said main conduit member, a movable striker on one said member, bell means on the other said member positioned to be engaged by said striker, and means for urging said striker against said bell means to produce a sonic alarm responsive to movement of said head member from said dormant to watering position.

Claim 16

A warning signal lawn sprinkler device comprising a main conduit member, a spray head member movably mounted on said conduit member and positioned to receive fluid passing through said conduit member, means for moving said spray head member relative to said conduit member from a depressed, dormant position to an extended watering position responsive to the admission of water under pressure into said main conduit member, a movable striker on one said member, bell means on the other said member positioned to be engaged by said striker, and means for urging said striker against said bell means to produce a sonic alarm responsive to movement of said head member from said dormant to watering position.