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Valve (Patent No: 212346)

Inventor: Carr, Alva Bruce

Location: Medicine Hat

Comments: N/A

Description: Alva Bruce Carr, Medicine Hat, Alberta, Canada, 5th July, 1921; 18 years. Filed 7th September, 1920. Receipt No. 335,203.

Claim.—1. A valve comprising a casing, a valve seat arranged in the valve casing, an annular shoulder formed in the casing above the seat, an internally threaded sleeve arranged thereon, means for securing said sleeve against rotation, a valve adapted to engage said valve seat, a valve stem to which said valve is secured, a portion of said valve stem being threaded and adapted to engage the threads of said sleeve to permit opening and closing.

2. A valve comprising a casing, a valve seat arranged in the valve casing, an annular shoulder formed in the casing above the seat, an internally threaded sleeve arranged thereon, means for securing said sleeve against rotation, a valve adapted to engage said valve seat, a valve stem to which said valve is secured, a portion of said valve stem being threaded and adapted to engage the threads of said sleeve to permit opening and closing said sleeve being capable of rotation with said valve stem to grind said valve and valve seat.

3. A valve comprising a casing, a valve seat arranged in the valve casing, an internally threaded sleeve arranged in the casing above the valve seat, a valve adapted to engage said valve seat, a valve stem to which said valve is secured, a portion of said valve stem being threaded and adapted to engage the threads of said sleeve, a locking nut arranged In the end of the casing and surrounding the valve stem, said nut being adapted to engage the top of said sleeve to hold the sleeve stationery, a conical valve seat arranged on the inner face of said nut, the valve stem being provided with a valve face adapted to engage said valve seat when the first mentioned valve is in open position.

Claims allowed, 3.

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