Splined shaft driving arrangement

A drive coupling for application between driving and driven devices, having particular application between a drive engine and pump, to effect a drive of the pump impeller, including telescoping coupling members one of which defines a hub open at one end to receive the other and having a closure portion at its opposite end, said members having means for a sliding interfit of one to the other to achieve a connection therebetween the form of which inhibits their relative rotary motion, providing for a rotary driving-driven relationship of said members, means for introducing a lubricant into said hub for lubricating said connection, and means for sealing against the escape of lubricant from said hub while said hub incorporates means for relieving the pressure of lubricant introduced to said hub in excess of that required for lubrication of said connection while substantially precluding lubricant loss from said connection during rotation of the drive coupling.

An adapter facilitating the coupling of a pump, the impeller of which has an externally projected drive shaft, to any one of a variety of engines the drive shaft of which embodies a flywheel, comprising a hub-like device the base end of which is adapted for a fixed coupling to the engine flywheel and the opposite end of which defines a socket embodying means for a slip fit and bearing connection thereof with an impeller drive shaft the form of which inhibits relative rotary motion therebetween and means for sealing a chamber thereby defined between said hub-like device and the impeller drive shaft, said hub-like device further including means for loading thereof and said chamber with lubricant and means for escape from said chamber of excess lubricant the form and arrangement of which inhibits escape of lubricant when said hub is coupled to the impeller drive shaft and rotates therewith.

An adapter as in claim 24 in combination with a pump the impeller of which has an externally projected drive shaft wherein said impeller drive shaft is formed for a slip fit mount in said socket the construction and arrangement of which prevents relative rotary motion therebetween and said sealing means is arranged in said socket between the inner wall thereof and said impeller drive shaft to form one end of said lubricant chamber in said hub-like device the opposite end of which is defined by a base closure portion of said hub-like device which forms the base of said socket.

A pump unit including a housing embodying impeller means for drawing liquid thereto and delivering the same therefrom, with or without solids, and means for establishing a drive coupling from any one of a variety of engines to said impeller means including telescoping coupling members one of which defines a hub open at one end to receive the other and closed at its opposite end, said members embodying means for a sliding interfit of one to the other to achieve a connection therebetween, the form of which inhibits their relative rotary motion and provides for a driving-driven relationship of said members, said hub having means for introducing therein a lubricant for lubricating said connection, and means for sealing against an escape of lubricant from the said open end of said hub and for relieving the pressure of lubricant introduced to said hub in excess of that required for lubrication of said connection while substantially precluding lubricant loss by way of said relieving means during drive of said impeller through said coupling means.

A pump unit including a housing embodying impeller means for drawing liquid thereto and delivering the same therefrom, with or without solids, means for establishing a drive coupling from any one of a variety of engines to said impeller means, the connection of the parts of said drive coupling means being effected in a relative approaching motion of one of said pump unit and the engine to the other, said pump unit including a relatively projecting rotary shaft in a driving relation to said impeller means forming one part of said drive coupling means, a shaft support assembly projecting from said pump unit housing and including means for a temporary fixing of said shaft against off center movements while it is relatively advanced upon another part of said coupling applied in connection with the engine to effect said drive coupling, said parts of said coupling defining therebetween a lubricant chamber and one thereof including a relief passage for escape of excess lubricant from said chamber which is constructed and arranged to be inoperative when the pump is operating.