Mechanism for lubricating bearings of a counter shift gear for a gear transmission

In a gear transmission including a casing containing lubrication oil, a counter shaft rotatably mounted in said casing and constantly transmitting rotational movement from a power input shaft by means of gear trains, a counter shift gear rotatably mounted on said counter shaft through bearings disposed in an annular space, a shift gear rigidly mounted on a power output shaft and being in constant meshing engagement with said counter shift gear, and clutch means for interrupting the relative rotational movement between said counter shaft and said counter shift gear, the improvement comprising:

• an annular counter inner race disposed between said bearings and said counter shaft and interfacing with and removably secured to said counter shaft for rotation with said counter shaft;
• and
• means for lubricating said bearings and the adjacent surfaces of said counter shaft and said counter inner race comprising an axial oil port in fluid communication with the interior of said casing extending axially of said counter shaft, a first radial oil port in fluid communication with said axial port and with the interface between the adjacent surfaces of said counter shaft and said counter inner race, and a second radial oil port in said counter inner race in fluid communication with said first radial oil port and the annular space in which said bearings are disposed.