_ 1 Nov. 12, 1946. ' 2,410,849 c. R. WASEIGE ‘ MULTIDRIVE GEAR BOX Filed lay 21, 1942 4 Sheets-Sheet l 9 (Invent-or: _ Charleskmzseg'ge (By £45,545 ?i-torney. 2' Nqv. 12, 1946.‘ c. R. WASEiGE ' 2,410,849 KULTIDRIVE GEAR BOX Filed lay 21, 1942 4 Sheets-Shut 2 36 - — mum I /4 I5 mé‘ ’ m! ,Tnverzi'ar: 6’ . CharZesB. Wasezzge ‘ 139 gm”: a a Nov. I12 594.6‘ Y R. ‘\NASEiGE xmmmmvs GEAR BOX Filed May 21, 1942 ‘ 2,410,849 ' 4 Sheets-Sheet A; <33: Q45,“ 4 4 V .4 lioruey. Patented Nov. 12, 1946 ' 2,410,849 UNITED STATES- PATENT orrica a MULTIDRIVE GEAR BOX Charles Raymond Waseige, Rueil, France; vested ' in the Alien Property Custodian Application May 21, 19‘2, Serial No. 443,965 In France May 18. 1937 _ ‘3* Claims. (01. mass) The present application forms‘ a continuation Figure 2' is a rear elevation of said arrange- . in part application of my co-pending application 5 . ment; Serial No. 207,115, ?led May 10, ms. " My invention relatesto the mounting of ac-, along the axis of its drive shaft; ' Figure 4 is a vertical section taken through the movement take-oil box on the engine; Figure 5 is a fragmentary section on an en compressors, vacuum pumps, electric generators, hydraulic pumps, 'etc., the operation of ‘which 10 is necessary for the operation of numerous'in ' c scale, taken through the movement take-off box, cessories on an aircraft orthe like. It is known'that modern aircraft are provided with’ a number ofgaccessory apparatus such for example as high, medium and low pressure air struments. ' Figure 3 is a vertical section, on an enlarged ' larged scale taken along the line 5—5 of Fig ure 2; ‘ ' , Figure 6 is a_ fragmentary sectional view sim ilar to Figure 3 and showing a modi?ed form of Hitherto such accessories have generally been drive shaft construction; , mountedv directly on the engine,‘ but the mul Figure 7 is a diagrammatic view in rear eleva tiplicity and variety oi’ said accessories makes 15 tion showing the arrangement of the lubricat such ‘a mounting more and more di?icult. Fur thermore. engine constructors are in that case ing conduits; Figure 8 is a diagrammatic view in side eleva - tion further showing the arrangement of the lu obliged to provide on their engines brackets and driving devices which are not always used, in bricating conduits; and the case of multi-engine aeroplanes, for example, 20 Figure 9 isan isometric diagram on an ‘en and this leads to making the rear parts of en'-_ larged scale, showing the arrangement of the gines different, according to the use on the aero oil pump and the conduits related thereto, in plane, and this is very disadvantageous as re cluding the relief valve. gards interchangeability. It has also been proposed to drive these ac 25 cessories, especially the generators by means of electric motors or by auxiliary engines, but these solutions are generally heavy and costly, and do an electric generator I, a high pressure air com-1 pressor 2, a medium pressure air compressor 3, not provide for proper lubrication-of the acces- _ sories. , My invention has for its object a multidrive gear box designed to removably carry accessories , In the embodiment shown it has been assumed that ?ve accessoriesgare to be mounted, namely, a vacuum pump 4 also serving as a low pressure ' compressor, and a hydraulic pump 5 serving for 30 example for supplying jacks not shown. Said ?ve accessories are ?xed on the outside of a case of a multidrive gear box 8 which is directly ?xed and to supply the same with power and with on the structure of the aeroplane in such a lubricating oil under pressure so that said ac manner that it is independent of the engine 1 cessoriesv are operated under exactly the same 35 carried by its supporting frame 8, by means of conditions as are obtained when they are mount horizontal cross pieces 9 which are ?xed at their ed on an engine. . ‘ ends on the edges of a'window l0 provided in the A further object of my invention is a box of fire-shield partition H, which is located to-the the aforesaid type adapted to be ?xed to the ' rear of the engine. The box 8 contains a suit structure of the airplane ‘and to be driven by 40 able number of output components, ?ve in this‘ the engine through the medium of a common ‘case, which are actuated by a common shaft i2 double Cardan shaft or the like. permitting the extending from a driving head l3 ?xed on the engine to oscillate or to be displaced relatively‘ engine above the‘movementtake-oif which is pro to the gear box. ‘ vided for this purpose on the rear of the en ' Other objects of my invention will be apparent .45 gine ‘l. The gear box 6 consists of a substantially ?at‘ in the following description taken with reference case having a vertical and substantially plane to the accompanying drawings, showing exem rear face ahd a front face comprising two plane plary embodiments of the invention, and in which: vertical portions on either side of the forwardly _ Figure 1 is a fragmentary .vertical longitudi nai sectional view taken through a portion of the airplane frame behind the engine and showing‘ an arrangement according to the invention in side elevation; - - 50 projecting nose i4 serving as a housing for the main shaft l5. It is on said plane faces that the accessories are adapted to be mounted so that they cover»- the movement take-offs. The central nose.“ has at its upper part‘ an inclined 65 plane face l6 which serves as a support'for the 2,410,849 . '- 3 -4 generator i. The main shaft l5 drives the vari play and the driving part is mounted on the shaft l2 by means of a splined sliding mounting 6!. The shaft i2 is furthermore spacedly surrounded by a protecting casing 62 having a ?exible or ous accessories through the medium of its gear l8 and gears on the shafts of the accessories, the shaft I! being driven by the drive shaft I! ‘through a friction coupling l9 forming a torque limiting device. The shaft it engages endwise resiliently deformable part. _ Of course my invention is in no way limited to the structural details described or illustrated ‘with the driving part of the coupling l9 through the medium of splines 20 having a slight play, herein which have been given only by way of which by the shaft I! can assume a slight in example. Thus there may be any number of accessories and they may be distributed in any cline relatively to the shaft l5. Furthermore. the driving splines are‘shorter than the driven manner over the common movement take-0H box. .splines so that shaft l2 can slide longitudi nally relatively to the coupling. At its opposite ‘ The swivel jointed modi?cation shown in Fig. 6 can be used for the driving head which is ?xed end, the shaft l2 penetrates into the driving head I! which is formed by a case 24 ?xed on the cas on the engine or again simultaneously on both The oil pump which forms 16 ends of the shaft l2. ing 25 of the engine 1 above the movement take off, which is in this case, as shown in Figure 4,, formed by a bevel pinion 26 the shaft 21 of which is actuated by the engine. ‘I. The case 24 sup ports a shaft 28 on which is ?xed a pinion 25 20 meshing. with the pinion 26 and said shaft 28 is connected to the shaft 12 by_ a swivel joint 3| and splines 32 similar to the splines 20. The shaft I2 is furthermore so dimensioned as to the lubricating means for the movement take-oil box may also be separately ?tted on the outside or the case. instead of being incorporated therein.‘ I therefore aim in the appended claims to cover all such changes and modi?cations. What I claim is: , , 1. In a power plant for a vehicle or the like. said power plant involving an engine having a power take-off and accessories including-a gen-. form a resilient-shaft which damps the vibrations 25 erator, high, low, and medium ‘pressure compres~ . sors, a vacuum pump, and a hydraulic pump; the At the end of the shaft I ‘I which isiintended improvement of an accemory assembly compris- I for driving the generator, is arranged a torque ing a casing mounted on the vehicle independent ‘and the variations of torque of the engine. limiting device 34 which. is adjusted in such a ly of and at one side of said engine; a main shaft - manner that?it can-only transmit the ‘maximum 30 -mounted horizontally in said casing, ?exible torque required for normally driving the gen means operativelyconnecting the engine end'of erator, in order to protect the members of the gear box from the effects of inertia of the rotor of the generator ‘in the event of a sudden stop, page of the engine. . ~ ' The case of the gear box furthermore con- - I said main shaft with the engine power take-01f. said main shaft having a bevel gear and other gearwheels, an inclined portion on the upper 35 part of said casing on which said generator .is ' tains a double gear' pump 35 comprising a ?rst mounted with a bevel pinion operatively con necting its shaft with the bevel gear on the main - pair of gears 36 forming an oil pump proper, cou shaft, said high and medium pressure com pled‘with a further pair of gears 31 forming a scavenging pump (Figs. 3 and 7 to 9). Both said 40 pressors mounted on the casing at opposite sides of said main shaft and having pinion shafts pairs of gears are driven through the interme meshed with one of said other gearwheels, said diary of a gear 38' meshed with a pinion 39 on low pressure compressor and said hydraulic the main shaft I 5.‘ . pump being mounted at opposite sides of said As‘shown in Fig. 7, the gears 3.6 suck oil from main shaft on a wall of the casing remote from the oil tank 40, whichmay be the oil tank of the engine, through the pipe 4| and force same 45 the engine with pinion shafts meshed with one of said other gearwheels, and lubricating means through a pipe 44 in a lubricating circuit. The comprising a depressed sump in the lower part said circuit includes on the one hand conduits ‘ 45 adapted to supply the gears of the box itself of said casing, a gear pump mounted on said re mote wall of the casing and drawing lubricant _and~further conduits 48 opening through faces from said sump, said gear pump having a pinion of the case of the box and connecting with cor 60 shaft meshed with another of said gearwheels responding passages ,46' provided in the ?xing on the main shaft, and lubricant passages lead ?anges of the ‘accessories 2, 3, 4', 5, which engage ing to the regions of said gearwheels and pinions with the front and rear faces of the box 6. The from the output side of the gear pump. I pipe 44 is in communication with a spring pressed relief valve 48 provided with an‘ over?ow pipe 49, 55 2. In a power plant for a vehicle or the like involving anengine having a power take-off and ‘and through a pipe 49'_ (Figs. 3, 7 and 8) with a companion accessories including 'a generator, pressure gauge 80. " , The oil which has lubricated the accessories the gear box, together with the unused for the lubrication of the gear box is sucked up at the bottom of the case by the inlet pipe 52 of the scavenging pump formed by the gears 31, and is delivered through the pipe 53 to the oil tank .40. The case of the gear box is thus kept relatively'.’ dry, thereby preventing a condition leading to losses ofoil, which are particularly objectionable ' on board aircraft shown in accessories is ob- . tained together with their driving. In the modification of construction of Fig. 6, high, low, and medium pressure rotary com pressors, a rotary vacuum pump, and a rotary hydraulic pump, the improvement of an assem bly mounted on the vehicle adjacent to but in dependently of-‘the engine for operatively sup porting said accessories, said assembly compris ing a casing having a transversely elongated vertical wall on its side remote from the engine, a depressed lower part forming a sump adjacent to said vertical wall, and a slanting upper face on its upper hart declining toward the engine, a main substantially horizontal main shaft jour nalled intermediate the upper and lower portions 70 a swivel joint 59 is provided to support the end of said casing, ?exible mean’s operatively con of the drive shaft 12 at the entrance of the move necting the adjacent end of the main shaft with ment take-oil’ box 6. - The two male and female the engine power take oil‘, said main shaft hav parts are connected to each other by driving splines 8| which allow them a slight‘transversei 75 ing a bevel gearwheel and other gearwheels thereon, said generator being mounted on said 2,410,849 slanting face, a generator driving shaft connected with the generator shaft and having a bevel :pin ion meshed with the main shaft bevel gear, said high and medium pressure rotary compressors being mounted on the ends of the casing sub erator, rotary compressors and the like, said unit comprising a casing mounted on the vehicle in— dependently of and adjacent to the engine, said mounted on said vertical wall of the casing on casing having an inclined upper generator‘ mounting face, a vertical wall remote from the engine for mounting the compressors and the like, and a depressed bottom forming a lubricant sump, a main shaft journalled in the casing in termediate its top and bottom and directed away 10, from and having its adjacent‘ end operatively opposite sides of the middle of said vertical wall . connected tothe engine power take-oil’, said main stantially on a line with said main shaft and having their shafts geared to one of said other gearwheels on the main shaft, said low pressure compressor and said hydraulic pump being and having their shafts positioned laterally in wardly of the high and medium pressure com-' shaft having-a bevel gearwheel and ‘other gear wheels, a generator driving shaft mounted vin pressors and geared to one of said other gear the casing on an incline and having a bevel pin wheels on the main shaft, and a lubricant'rotary 15 ion atKits lower end meshed with said bevel gear gear pump mounted on the lower part of said wheel on the main shaft and a torque-limiting ‘vertical wall and within said sump and having coupling at its upper end, said generator being its shaft geared to another of said other gear mounted on said inclined generator mounting ' wheels on the main shaft, said lubricant pump face with its shaft operatively connected to the ‘ having its intake side communicating with said 20 generator driving shaft by said torque-limiting sump, and conduit means on the walls of said coupling, said rotary compressors and the like casing and leading from the output side of the being mounted on said vertical wall with-theirv lubricant pump to the regions of the meshed shafts extending substantially parallel to and. gears and gearwheels. geared to said other gear'wheels of the main shaft. 3. A unit for the separate moimting of the ac 25 cessories of a vehicle engine. including'its gen CHARLES RAYMOND WASEIGE.