Shaft seal

Claim 2

A shaft seal for a rotatable shaft provided with a flange consisting of a sealing thrust ring adapter comprising a plate having a neck provided with a sealing surface and formed in two half sections of a complete circle, means removably fastening said sections together comprising one half section having two bored holes located in opposite sides of one half section, each bored hole adapted to accommodate the head and body of a screw, the lower portion of each of said two bored holes being tapered, the other half section having two tapered orifices located in opposite sides thereof and aligned with the two bored holes, respectively, two tapered plugs, each plug having a screw thread, located, respectively, in said two tapered orifices and extending into the tapered portion of said two bored holes, and two screws located, respectively, one in each bored hole and rotatively mounted in the screw threads respectively, of said two tapered plugs, whereby rotation of said two screws aligns and fastens said two half sections together, said adapter surrounding said shaft, means fastening said adapter to the hull of a ship, a mating ring having a mating face, said mating ring formed in sections, means removably fastening said last-mentioned sections together around said shaft, means fastening said mating ring to said flange, a sealing thrust ring having a sealing face and circular flange, said sealing thrust ring formed in sections, means removably fastening said last-mentioned sections together around said shaft, means slidably mounting said sealing thrust ring upon said sealing surface in fluidtight relationship, with said sealing face engaging said mating face.

Claim 3

A shaft seal for a rotatable shaft, consisting of a housing formed in a plurality of sections, said housing surrounding said shaft, means removably fastening said sections together, means fastening said housing to the hull of a ship, said housing forming a chamber around said shaft, a mating ring having a mating face, said mating ring formed in two half sections of a complete circle, means removably fastening said mating ring two half sections in alignment together around and to said shaft and in said chamber comprising two bored holes located, respectively, in opposite sides of one half section, each bored hole adapted to accommodate the head and body of a screw, the lower portion of each of said two bored holes being tapered, the other half section having two tapered orifices located in opposite sides thereof and aligned with the two bored holes, respectively, two tapered plugs, each plug having a screw thread located, respectively, in said two tapered orifices and extending into the tapered portion of said two bored holes, and two screws located, respectively, one in each bored hole and rotatively mounted in the screw threads, respectively, of said two tapered plugs, whereby, rotation of said two screws aligns and fastens said two half sections together, a sealing thrust ring having a sealing face, said sealing thrust ring formed in a plurality of sections, taper plug and screw means removably fastening said last-mentioned plurality of sections in alignment together around said shaft and in said chamber, means slidably mounting said sealing thrust ring to said housing with said sealing face engaging said mating face in axial alignment to form fluid-sealing interfaces, to thereby separate said chamber into two sections, wherein, one of said two sections houses oil and the other section houses sea water, fluid-sealing means interposed between said sealing thrust ring and said housing, to prevent sea water from entering said oil section, said fluid-sealing means forming a flexible seal connection permitting axial and angular adjustment between said interfaces to provide fluid-sealing engagement of said interfaces resilient means located in the oil section of said housing and located external of said interfaces on an enlarged diameter for urging said interfaces into a fluid-sealing conditioN.

Claim 4

A shaft seal for a rotatable shaft, consisting of a housing formed in a plurality of sections, said housing surrounding said shaft, means removably fastening said sections together, means fastening said housing to the hull of a ship, said housing forming a chamber around said shaft, a mating ring having a mating face, said mating ring formed in two half sections of a complete circle, means removably fastening said mating ring two half sections in alignment together around and to said shaft and in said chamber comprising two bored holes located, respectively, in opposite sides of one half section, each bored hole adapted to accommodate the head and body of a screw, the lower portion of each of said two bored holes being tapered, the other half section having two tapered orifices located in opposite sides thereof and aligned with the two bored holes, respectively, two tapered plugs, each plug having a screw thread located, respectively, in said two tapered orifices and extending into the tapered portion of said two bored holes, and two screws located, respectively, one in each bored hole and rotatively mounted in the screw threads, respectively, of said two tapered plugs, whereby, rotation of said two screws aligns and fastens said two half sections together, a sealing thrust ring having a sealing face, said sealing thrust ring formed in a plurality of sections, taper plug and screw means removably fastening said last-mentioned plurality of sections in alignment together around said shaft and in said chamber, means slidably mounting said sealing thrust ring to said housing with said sealing face engaging said mating face in axial alignment to form fluid-sealing interfaces, to thereby separate said chamber into two sections, wherein, one of said two sections houses oil and the other section houses sea water, fluid-sealing means interposed between said sealing thrust ring and said housing, to prevent sea water from entering said oil section, said fluid-sealing means forming a flexible seal connection permitting axial and angular adjustment between said interfaces to provide fluid-sealing engagement of said interfaces resilient means located in the oil section of said housing and located external of said interfaces on an enlarged diameter for urging said interfaces into a fluid-sealing conditioN.