Patent GB-190925136-A (GB)
Title: Improvements in Hydraulic Power Transmission Gears.
IPC: F16H61/52
Filed: 1909-11-01
Granted: 1910-11-01
Abstract: 25,136. F÷ttinger. H., and Stettiner Maschinenbau Akt. - Ges. " Vulcan." Nov. 1. [Addition to 13,864/06.] Combined-flow type; regulating; reversing; casings.-Relates to improvements in the apparatus for the hydraulic transmission of power described in the parent Specification, and consists in obtaining varying speeds and reversal of the secondary turbine member by dividing the circuit into two or more branches formed in non-rotating members placed between the turbine wheels used in common for all methods of running. The parts of the circuit where the branches divide out and recombine always consist of adjustable distribution control members. The stationary guide distribution control member shown in Fig. 7 contains rockable sector-shaped blades which direct the power medium into one or other of two branches. Single guide-blades of metal, rubber, leather, or the like may be used. With an annular axiallyadjustable distribution member as shown in Fig. 11, the passages 8, 9 alternately connect the primary wheel 10 with the passage 12, 11 of the first stage of the secondary wheel. The width of the web c may be such that communication between the wheel 10 and passages 12, 11 is entirely or in part cut off when the distribution member is in its mid position. Movement of the annular member to the right puts the left passage 12 into the circuit and movement to the left brings in the right passage 11. The passages 8, 9 may be disposed so that a movement of the annular member to the right brings the right-hand passage into the circuit. The cylindrical bearing 13 may have removable bearing-surfaces. To obtain two forward speeds and a reverse, the annular member has three passages 15, 16, 17, Fig. 13, one of which connects the primary wheel 14 with one of the passages 18, 19, 20 on the first stage of the secondary wheel. In order to prevent eddying in the non-operative passages of any of the guide-members, annular sleeves may be used which cover such passages. The construction shown in Fig. 15 comprises two slide members 27, 28, which are moved together by a screw 29 so as to cover or uncover the passage 24 in a stationary guide member. Only one set of passages is controlled, but the sleeves may be arranged to control all the branches, one set of passages being uncovered and all the others covered. The two slides may be ccnnected by guide-blades 44, which can be put into the circuit as shown in Fig. 20, the passage 43 being closed. When the slide is moved to uncover the passage 43, the guide-blades 44 are withdrawn into a housing on the casing. With the arrangement shown in Fig. 31, the secondary wheel is employed in two stages for forward running and one stage for reverse running. The apparatus may be modified to give two stages in both directions as shown in Fig. 34. When the secondary wheel acts in five stages, two may be grouped as at 91, Fig. 37, the other three being grouped as at 90. The guide members may all be operated in common, or the distribution control members only may be coupled. If desired, part of the casing can be formed by one of the rotating parts, and the whole of the guide members contained in one annular piece and operated in common. The distribution control members may have independentlyoperated pivoted or flexible guide-blades of the kind shown in Figs. 1 to 4 of Specification 6861/09. The distribution control or guide members may be operated by two or more pistons under water pressure, or by controlling the fluid pressure acting on the annular faces of the guide member itself. Levers, racks, steam, compressed air, or any convenient power means may be used to operate the guide members. Means are provided for taking the thrusts and other forces upon the non-rotating guide members. The guide member 54, Fig. 22, has two arms 55 supported on roller bearings 57, 58 on the fixed casing 56, the arrangement permitting axial but preventing rotational movement. As shown in Fig. 24, roller segments 59 are used having knife-edges 60 which bear against adjustable wedges 70. Links 73, 75, 74, Fig. 25, may be used to connect the arms 55 with supports 76 on the casing. In order to distribute the pressure uniformly upon a number of bearing-surfaces, the connecting- links are coupled. In Fig. 26, the arms 55 have pins 73 carrying levers 77, 73, 78 of which the end 77 is displaceable axially. In a modification, the levers 77, 73, 78 are each connected with an arm 55 by an intermediate link in order that the end 77 shall be situated outside the apparatus. The links 80, Fig. 28, connect the arms 55 with cranks on a shaft 82 supported in bearings 83.