within casing half 2 a manifold 4 for the hydraulic non stage transmission is fixed to the bosses 2h through bolts the manifold 4 connects a hydraulic pump and a hydraulic motor through a closed circuit so as to constitute a hydraulic non stage transmission manifold 4 is nearly l like shaped as shown in fig6 the hydraulic pump which is mounted on the upper surface of manifold 4 is not shown in fig5 meanwhile a cylinder block 8 of the hydraulic motor is mounted at the side surface of manifold 4 output shaft 6 integral with the cylinder block 8 is supported by support 2g through a bearing a gear 35 is formed at an intermediate portion of output shaft 6 a drum like braked rotary member 19 is fixed to the utmost end of output shaft 6 projecting outwardly from casing m around the braked rotary member 19 is provided a band like braking member 21 press contactable with the braked rotary member 19 a countershaft 15 provided with a larger diameter gear 16 engageable with gear 35 and a smaller diameter gear 18 is disposed at swollen portion 2f a differential gear including a ring gear 17 engageable with smaller diameter 18 is housed in casing half 2 the differential gear comprises a pair of pinions 37 mounted integrally with ring gear.