G - Physics
05
G
142/11
G05G 13/00 (2006.01) B60K 20/08 (2006.01) F16H 3/083 (2006.01) F16H 63/14 (2006.01)
Patent
CA 1045000
ABSTRACT OF THE DISCLOSURE A transmission with multiple forward speeds and an improved shifting arrangement is provided. The transmission is particularly adapted for use on riding lawn mowers, garden trac- tors, and the like. The shift mechanism includes a pivotable shift lever which requires the operator to interrupt the motion of the lever when shifting from neutral to reverse and from neutral to successive forward speeds. This enables the operator to know by feel what gear the transmission is in. The trans- mission can also be quickly shifted from reverse to neutral or from any forward speed down to or toward neutral without inter- ruption. The pivotable shift lever is located outside a cover of the transmission and is mechanically connected through the cover with an internal shift lever or arm which engages a pawl pivotally mounted on a carrier, with a stop member being engag- able by the pawl to control the movement of the carrier, the pawl, and the levers. A shifter fork is located within the housing and projects through a slot in the housing, which slot is positioned transversely to the path of the carrier and in turn is engagable with a transverse slot in the carrier itself. The shifter fork moves a shift collar which is connected to two diametrically-opposite key carriers in two diametrically-opposed grooves in a shaft of the transmission. The carriers have individual keys for individual forward speed gears of the trans- mission. The ends of the carriers can engage an additional forward speed gear when moved to their extremities and the shift collar can engage a gear or sprocket for reverse when moved in the opposite direction along the shaft.
250490
Hauser Hans
Jones Ronald N.
LandOfFree
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