Diesel cab seat assembly

Claim 2

A seat assembly for a locomotive cab or the like comprising: a. a seat portion; b. a back portion pivoted at a rear portion of said seat portion; c. a height adjusting mechanism mounted on and beneath said seat portion; d. means for wall mounting said seat assembly on the wall of a cab, said means for wall mounting said seat assembly comprising a cantilever support, said cantilever support comprising a central, downwardly-extending arm and two, horizontally-diverging arms, said arms being held at one end by an upstanding leg of an angle bracket, the other end of each of said horizontal arms being formed with a plate, said plate being engagable in a guide channel mounted on the wall of said cab, the other end of said downwardly-extending arm being provided with a leveling screw assembly which is threadable in a holder mounted on the end of said downwardly-extending arm being provided with a leveling screw assembly which is threadable in a holder mounted on the end of said downwardly-extending arm, and which is inserted in a perforated plate fixed on the side wall of the locomotive thus allowing forward and aft mobility of the whole seat assembly.

Claim 3

A seat assembly according to claim 1, wherein said height adjusting mechanism comprises a vertically mounted adjusting screw having an upper unthreaded portion and a lower threaded portion, said adjusting screw having a mounting plate fixedly secured to the upper end thereof, said mounting plate being fixed on said seat portion; a tube attached to a bracket, said tube engaging a portion of said adjusting screw; a nut integral with said tube and said bracket and disposed beneath said tube and engaging said threaded portion of said adjusting screw; a locking nut engaged by the threaded portion of said adjusting screw to abut said integral nut upon rotation of said locking nut toward said integral nut; and a locking handle operatively connected to said locking nut to rotate the later and to alternatively lock or unlock said seat assembly in a selected position.

Claim 4

A seat assembly according to claim 2, wherein said angle bracket has a flat horizontal portion and an upstanding leg, said tube upstanding from said flat horizontal portion and a circular opening in said flat horizontal portion, said opening having substantially the same diameter as the inner surface of said tube to permit said screw to extend through said flat horizontal portion, said tube being secured to an inner face of said upstanding leg, said tube having a larger inner diameter than said adjusting screw, a shoulder on the inner part of the tube in the upper portion thereof, a bushing disposed inside said tube, resting on said shoulder and circumjacent to the unthreaded portion of said adjusting screw for providing a close running fit between said unthreaded portion of said screw and said tubular member, said integral nut being an alloy and having a narrowed circular upper portion received in a circular recess on the underface of said flat horizontal portion, said integral nut being secured against the underface of said flat horizontal portion by fasteners extending through said flat horizontal portion into said tube, said locking nut comprising an alloy and being mounted in a circular grip operatively connected to said handle, said adjusting screw comprising a substantially stressproof material.

Claim 5

A seat assembly according to claim 1 including single-motion, arm rests pivotal on brackets mounted on the side of said seat portion between an upward and slightly inwardly converging and substantially vertical position and to a downward substantially horizontal parallel position.

Claim 6

A seat assembly according to claim 1, wherein said seat portion comprises a seat frame assembly, a seat cushion riser disposed in said seat frame assembly and a cushion which is fixed to said seat cushion riser.

Claim 7

A seat assembly according to claim 1, wherein said back portion includes means for permitting it to incline and comprises a seat back frame assembly and a seat back cushion which is fixed in said seat back frame assembly.

Claim 8

A seat assembly according to claim 6, which comprises a seat back reclining lever assembly mounted on said seat frame assembly and operatively connected on said seat back frame assembly to adjust the seat back between a rearmost and a foremost position.

Claim 9

A seat assembly according to claim 7, wherein said seat back reclining lever assembly comprises a substantially upwardly sloped slot formed in said seat frame assembly, a bolt extending through said slot inside said seat back frame assembly, into a sleeve mounted on said seat back frame assembly, the other end of said bolt being threaded into a nut fixed at the opposite end of said sleeve whereby when said lever is lowered the threaded portion of said bolt becomes further engaged by said nut to cause said bolt to slightly enter further into said sleeve to lock said seat back relative to said seat frame assembly.