US1323939A - white - Google Patents

Description

M. 0. WHITE. COMPRESSOR AND MOTOR STARTER.

APPLICATION FILED NOV- 28. I914. RENEWED JULY 16, 1919- '1,323,939. 7 Patented Dec. 2,1919.

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M. C. WHITE.

COMPRESSOR AIIID MOTOR STARTER. APPLICATION FILED NOV. 28, I9I4. RENEWED JULY I6. I919.

1,323,939, I Patented Dec. 2,1919.

6 SHEETS-SHEET 2- I b A H 462mm AW M. 0. WHITE.

' COMPRESSOR AND MOTOR STARTER.

APPLICATION FILED NOVPZB. I914- RENEWED JULY 16, 1919.

1 23,939. Patented Dec. 2, 1919.

6 SHEETS-SHEET 3- M.. 0. WHITE.

COMPRESSORAND MOTOR STARTER. APPLICATION FILED NOV. 28, l9l4. RENEWED JULY l6. I9l9- 1,323,939., Patented Dec. 2,1919.

6 SHEETSSHEET 4.

M- C. WHITE.

COMPRESSOR AND MOTOR STARTER. APPLICATION FILED NOV. 28. 1914. RENEWED JULY 16, 1919.

1,323,939. Patented Dec. 2,1919.

6 SHEETS-SHEET 5.

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M. C. WHITE.

COMPRESSOR AND MOTOR STARTER; APPLICATION FILED Nov. 28. I914. RENEWED JULY Is. I919.

Patented Dec. 2, 1919.

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WHITE, or nos anennns, cALironnIA, ASSIGNOR TO 0. WHITE COMPANY, or Los ANGELES, onLrronnIr-l, a conrona'rroiv or CALIFORNIA.

COMPRESSOR AND MOTOR-STARTER.

Specification of Letters Patent.

Patented Dec. 2, 1919.

Application filed November 28, 1914, Serial No. 874,384. Renewed July 16, 1919. Serial No. 311,383,

To all whom it may concern:

Be it known that I, Mourns C. 'VVHITE, a citizen of the United States, residing at Los Angeles, in the county of Los Angeles and State of California, have invented new and useful Improvements in Compressors and Motor-Starters, of which the following is a specification. This invention-relates to pneumatic pumps and engine starters. In accordance with the invention a portion of the energy of the engine may be utilized to operate the pump to compress air or other fluid; and a portion of such con'ipressed fluid may be run through the'pump in its reverse operation to start the engine. Thus the pump under the enrgy of fluid compressed by it may be utilized as a motor or engine for the purpose of starting the prime mover by which the pump is operated for the compression of such fluid. The invention provides therefore mechanism which is pz'irticularly adapted for use conjointly, with internal combustion motors such as used in automobile p actice, although not limited specifically to any such specific association. It may be with equal advantage applied similarly i to marine motors or stationary engines, and in fact to any type of prime mover which requires initiation of movement of itsworking parts to set it into operation. The further advantage attaches that such starting mechanism serves as a pump for tne compression of fluid not only to be re-used for such starting puroses upon reversal of the starting mechanism, but which may be utilized'for divers other purposes, such as, in automobile pracrice, the pum iing oi tires and operation of pneumatic jacks, pneumatic gear shifting and the like. Many kinds of starting mechanisms have been devised for initiating move-" ment in prime movers, utilizing electrical energy or the energy or spring drums, or

' operated by foot or by hand. Compressed air has likewise been used for such starters. The present invention, however, is to'bc dis: iinguish ed radically from any such similar starters, in that by the aid of the prime mover it produces its own operating energy, which may likewise be used for other or further purposes than the operation of such starter.

In car ying the invention into effect, I

provide 111 combination with the startingmechanism means whereby it may be thrown into operative connection with the motor or prime mover for operation as a pump to produce and store up transformed energy for its own operation, means for disconnecting such operative connections whereby the pump may be thrown out of service, such means comprising features subject to voluntary control and features automatically controlled, and further means whereby the same mechanism may be operatively connected with the prime mover or motor so that upon thereversal of operation of such mechanism the prime mover or motor may be started under the application to such mechanism of the energy produced and stored by it when operating as a pump. 7 V

In automobile practice the combined pumping and starting mechanism is conveniently mounted in juxtaposition to the motor, and the voluntary control for throwing the mechanism ,into and out of pump I ing operation and themeans for reversing the mechanism to cause it to operate as a starter, are all conveniently arranged or mounted at or near the steering column whereby the operator may establish such working conditions as he desires for either;

pumping purposes or starting purposes. The motor vehicle, will of vcourse carry a container torthe'fluid compressed by the-mechanism when operating as a pumpQj The means 1 for causing automatic cessation of the pumping operation will be combineddirectly with such mechanism, andbe a part of such mechanism as a unit.

. I provide in practice'apparatus for the combined purposes of pumping and starting which operates preferably upon the rotary principle, thus eliminating all reciprocating piston parts, valves for the same, and the packingsand other adjuncts which are associated with such types of pumps and which cause frequent repair, adjustment and replacement. I thus obtain. positive operation and long life of the apparatus and its parts, whichis of high importance in apparatus of this character and particularly so when to be applied in service in which comparatively unskilled operators and. drivers have to deal with such apparatus iii-the mam. Theinvention in these respects providesan "apparatus for the purposes stated which requirespractically no attention and gerous operation .of cranking the motor' manually is entirely eliminated.

The inventlon has for further ob]ects the provision of apparatus or mechanism-of the general nature stated which will-be superior in point of'relative simplicity and inexpensiveness'ofconstruction or organlzat on considered in connection with positiveness of operation, durability, facility in control, and compactnessin form and ready attachability and detachability or installation, and which will be, generally superior in efficiency and serviceability.

The invention consists in, the novel and useful provision, formation, combination,

inter-relation and association of parts, members and features, all as hereinafter described, shown in the drawings and finally pointed outin claims.

This invention has features in common with that disclosed in Letters Patent No. l,1et8,809, issued to me August 3, 1915, and pertaining particularly to the inter-relation of therotors of the fluid-compression means together with the means for compressing fluid in the interspaces between the teeth of suchrotors.

In the drawing: 7 r p v V Figure lis a view partially diagrammatic and partially in elevation of a motor vehicle to whichis applied pumping and starting mechanism embodylng' the invention, to-

gether with theseveral features of control, compressed fluidstorage, and the like, which enter into the general system ofpumping andmotor starting contemplated by the invention Fig. 2 is acentra'l vertical sectional view, parts being in elevation, of motor starting and Pumping mechanism constructed andorganized to embody the invention, the same being shown inidetached-position?" Y Fig. -8"-is a vertical sectional view, partly inelevation and partly broken away for clearness of illustration, taken upon the line F ig.2, and looking in the direction of the' appended arrows;

Fig. 1 is a vertical fragmentary sectional view, partly in elevation and partly broken away for fullness of illustration, taken uponthe line ac -'00, Fig. 2, and looking. in the direction of the appended arrows;

Fig.5 is a rear face view of the rear motor casing-head in detached "position;

Fig-6 is-an edge view ofthe same looking in the direction of the arrow adjacent to Fig.5; 1

F 7 is a vertical detail sectional View, taken upon the line m m Fig. 5, and look 111g 1n the direction of the appended arrows;

.Fig. 8 is an outer view, partly broken away,'of the front rotor case plate or head in detached position; N

Fig. 9 is an edge view of the same Fig. 10 is a vertical sectional View of the same taken upon the line m m ,Fig. 8, and looking in the direction of the appended arrows; 7

Fig. 11 is a vjerticalsectional View taken upon the lines 00 -w Fig. 2, and looking in the direction of the appended arrows;

Fig. 12 is a side elevation of the rotor casing in detached position, including the features shown in-Fig; 11, andlooking in the direction of the appended arrow in Fig. 11; p

F1 13 IS a transverse sectional view taken upon the line m -0o ,Fig. 11, andlooking in the directionof the appended arrows, parts 7 being omitted for cle-arncss of illustration;

Fig. 14 is a detail transverse sectional view taken upon the hue m *00 Fig. 3, and

looking in the direction of the appended arrows and V -F1g. l5 a detall transverse sectional view taken upon-the line 00 m Fig. 4-, and

looking in the direction of the appended arrows. 1 1

Corresponding parts 111 all the figures are designated byth'e same reference characters;

Referringwith particularity to the drawings, and for the moment more particularly to Fig. l-thereof, A designates generally pumping and motor starting mechanism embodying the invention, the same being shown in said F jg. 1 as applied to-a motor vehicle B having the usual steering columnb, said mechanism being combined with the internal combustion motor C within the hood or housing. .A compressed fluid tank or container D 1s earned by the motor vehicleand coimnunicates.with the mechanism A by a.

pipe or conduit-1E. Fdesignates means for controlling the mechanism A whereby lts operatlon as a pump may be voluntarily imtiated or tern'linated and whereby com-1 v pressed fiuidstored within the container D may be admitted to the apparatus A-to causeit to operate as a starter for the motor (I.

The location of the mechanism A which assembled in a compact unit, with V respect to the motor C, is not essential, and various arrangements in assen'i'blage and installation may be had all with respect tochoice or convenience. The mechanism A however provided with a, drive shaft G which,ii1v

practice, is coupled, either directly'or indirectly, with thecrankshaftli of the motor, so that a permanent working relation exists between such mechanism and the motor through this shaft connection. K designates means whereby the power shaft or drive shaft G- is operatively connected with theremaining elements of the mechanism A for actuation of such elements by the motor C as a pump. L designates means whereby the other elements or working elements of the mechanism A are automatically connected with the power shaft Gr to cause such mecha nism to rotate the crank shaft H and start the motor. 10 designates i'neans included within the means K whereby the power shaft G is autmnatically disconnected from the,

other working elements of the mechanism A. to terminate pumping actionthereof after a predeterminednumber of revolutions of the power shaft G has been executed. M designates generally means for compressing fluid to be stored in the container 1). Such means are mounted within a housing N provided with a front head or plate 15 and a rear head or plate 16, such means M including preferably two members or elements on which are jointly rotated within such housingv N to. either compress the fluid to be stored, or responsive to the pressure of such compressed fluid, in the first instance. for pumpin and in the second instance for motor starting. The features or elements K and L are accommodated within a second housing 0 which is disposed rearwardly of the housing N, and is provided With a back plate 17, such housing 0 and back plate thereof being attached to the rear head 16 of the housing N by tie-bolts or the like 18. The

elements on of the fluid compression means M preferably comprise each a cylindrical rotor provided with herringbone teeth '19 separated by complementary interspaces 20, such rotors being matched to .intermesh and each being provided with a shaft 21 which shafts are mounted in bearings 22 upon the front head 15 and 23 upon the rear head 16 of the housing N. being provided with suitable anti-friction devices or ball bearings 24: or the like. The power shaft G ranges through both housings N and O and is mounted rotatively in a bearing 25 upon the front housing head 15, and in a journal 26 upon the rear plate 17 of the housing 0, being like wise provided with an auxiliary bearing 27 formed in a bottom extension 28 of the housing N, which has other features to be hereinafter pointed out. I

The tiebolts 18 serve to also hold the rear head 16 to its housing, and *shortbolts 29 detachably secure the front head 15 to its housing. The rotors m thus abut at their plain. ends against the heads 15 and 16, and said rotors are confined in their Zones of rotation by a double cylinder or casing cast within the housing N. This casing 30 is so formed that the teeth of the rotors sweep the inner surface of the same throughout a major portion thereof, there being a flat toned part 31 of such surface opposed to or cutting the plane of intermeshing of the rotors at one side of the same, and a muti- "from the lower lobe of the casing 30, providing a passage connuunicating at its lower end with the chamber 83. This nose is inv its mutilated formation cut away so asto produce angular tliLIlSVGl'SB walls 32, shown in full lines in F Band in dotted lines in Fig. 12, the angularity of each of which corresponds to the angularity of the teeth 19 of the liei.'i-ingbone toothec rotors m, producing an orifice 82 which in plan is that -of an elongated'diamond This orifice constitutes the discharge orifice for, the fluid compressed by the rotors m and introduced into the .final compression chamher 33, in pun'iping and constitutes the feed port to the rotors whereby compressed fluid drawn from the container D is supplied through the chamber 33 to the rotors for operating the same. "The air or other fluid to be supphed to the rotors m for pumping is inducted through a feed pipe 36 cast into the housin N and the casing .30 within thc same. the same opening at 37 in an orifice which is produced through the flattened por t-ion 31 of the casing 30. IThis pipe'36 leads downwardly to aport .in the rear housing head 16, which communicates with the interior of the housing 0, from which cfhiidtobe' compressed is drawn int-o the cars iiig 30 of the'rotors. its will hereinafter be pointed out, a fluid in addition to that to be compressed likewise inducted at this point, being! a lubricant which in addition to the function lubricating the working parts of the mechanism it performs the function of lubricating the rotors m and sealing the'same top'revent dissipation'of the fluid to be compressed around the rotors and likewise serves to produce an initial compression of the fluid to be compressed in the interspaces between the rotor teeth 19. The fluid to be compressed is drawn into the housing 0 through a pipe or tube 39 provided within such housing 0, being'ezrtended from the lower portion of the same where it is provided with an exterior ronnection nipple 10, to the upper portion of such housing, above the lubricant content thereof.

The liquid lubricant seal. preferably consisting of lubricant oil. is initially drawn into the housing 0 with the early charges of or other fluid to be compressed through the pipe 39, and preferably from a tank, not shown, having baffles or strainers or the like to produce even flow. The fluid compressed by the rotors and introduced within the chamber 33 finds its way eventually to the upper end of a discharge pipe a1 mounted within the housing N, at

one side of the casing 30, and having its pper end 12 slightly spaced away from an enlargement 43 upon the housing, and its low-er end projected through the lower portion of such housing at one side, and provided with a connection nipple hl for the pipe E which extends to the compressed fluid container D. WVithin the chamber 33, at the same slde as the dlscharge orifice 32",

and slightly. above the same, are a plurality of downwardly ranging baliles a5, springing from the walls of the housing N and the easing '30, upwardly toward which the compressed fluid is discharged through a port at in the shell or wall 3%.7' Lubricant discharged through'the orifice 32 inthe main finds its way downwardly through the passage 35 into the lower portion of the chaml'ier 33. Such portions of thesame as pass the port i6 will be in themain retained by the baffles eand downwardly. directed into the well which comprises the lower portion utilized inreversing the mechanism A asa When this takes place, the

of the chamber The compressed fluid will therefore take the general tortuous course designated by the arrows in Fig. 11, passing a final baffle 17 at one :side of the dischar e tube 41. and hence risirw'to the upper end of such discharge tube and issuingthrough the latter to the container D through the pipe E. Within thispipe E the check valve 0 isprovided, adjacent to the connection. nipple, preventing return flow to the chamber 33, excepting when the means F are brought into use for positively unseating such check valve so as to permit compressed fluid stored in the container'D' to be motor starter. compressed air or other fluid 1s fed to the chamber 33 through the discharge tube 41,

past the baffles 15 and 47, through the port 1 416, through the orifice 32 into the rotors in the casing 30 to reversely operate the same I operation takes place, the means F are utilvalve 0, to throw out of operationithe means ized, inaddition to unseating the check K whereby the mechanism A is positively coupled with the-crank shaftfor pumping I action, unless suchrelation has been already established, namely such disconnection of the drive shaft G from the remaining features of the mechanism A, by the meansk for automaticallyproducing this result.

It will be understood fromthe foregoing remarks with respect to the initial induction of lubricant fluid within the housing. 0 through the pipe 39, that a considerable quantity of such fluid will be confined with in such housing to lubricate the features therein contained, and a considerable quantity will likewise be drawn, over into the housing N. This is utilized on the-gem eral principle disclosedin my other application for patent initially herein referred to, for the purpose mentioned of sealing and lubricating the rotors Wtftlld of. initially compressing within the interspacesbetween the teeth thereof the air or other fluid to be compressed by the rotors and within the chamber 33. In order to obtain this result,

the front and rear heads 15 and 16 of the housing :N are provided with suitable pas sages or channels or ducts for conveying to the'ends of the tooth interspaces theilubricant for the purposes stated. The casing head 15 to this end is provided upon its outer face with a transverse duct 48,- between the lowerbearing 22 and th'e'bearing 2 5, which communicates at its ends with ports L9 and 50.;produced through such head 15, andcom= municating with the chamber 33 "at the respective sides of the rotor, casing 30, the former preferably being smaller than the latter, so that a greater quantity of lubricant passin 'yinto suchduct: willcome fronithe side of'the chamber 33 to which discharge is immediately made through discharge orifice 32. Drawing from both sides of this chamber produces a more complete circulation and keeps the entire fluid content in motion.

A duct 51 leads from the end of the duct 48 adjacent to the port 49 around the lower bearing 22 to a pointbetween such bearings 22 where it is subdivided to produce branch ducts 51 and 51 which respectively skirt the confines of'the bearings 22, and are pro: vided at their'junetion with a port 51 passing through the head 15 into the rear side thereof, where said ducts throughout their extent traverse the .inner surface of such head. The-ducts -4l-8 t11(l 51 thus traverse the outer surface of the head 15- and the branch ducts 51 and 51 traverse the inner surface of such head, the'latter branch ducts being in the form ofarcs which coincide with arcs of the paths of rotation of the rotors m and of the teeth thereofpso that said jduct' branches 51 and 51 directly communicate with the interspaces between such teeth; The'ducts 48; 51. 511 and 51 1are produced by casting enlargements upon the head 15. A. shield 51 is placed over the port 51, in the plane of the inner face of. the head 15, extending over the ducts 51* and 51 part way from the portfijl outwardly, as shown in Fig. 8 cutting off communication of the interspz-tces between the rotor teeth With such ducts before such inte-rspaces have come into communication with the discharge ori fice 32 Similarly, upon the outer or rear face of the rear head 16 of the housing N, I provide a duct 52 ranging from the left side of such plate about midway of its ends transversely thereof between the bearings 23, where it branches toproduce branch ducts and 52", which skirt the sides of the bearings At the point. of junction of the duct 52 and the branch ducts 52 and 52 a port 52 is produced through the plate 16 communicating with the branch ducts which open through the inner face of the plate 16,

such ports 59/ being covered by a shield 5%, so that the branch ducts. arcuate in form, only open over those portions of the paths of rotation of the teeth of the rotors wherein the interspaces between the teeth may communicate with such branch ducts prior to coming into communication with the discharge orifice 32". The outer extremity of the duct 52 communicates with the interior of the chamber 33 by means of a relatively small port 53; and an extension of the branch duct 52 communicates with a relatively larger port 54: through the head 16, such ports 53 and 54C communicating with the same sides of the chamber 33 with which the respective ports 49 and 50 in the head communicate. The lubricant fluid within the chamber 33 being under the pressure of the compressed fiuid traversing such chamber, such lubricant fluid passes from the chamber 33 through the ports 49 and V and 53 and 54. into the two systems of ducts 51 et cetera, and 52, et cetera. and is forced into the interspaces, and at both ends thereof of the rotating rotors producing anoinitial compression in such interspaces of the air inducted thereto through the pipe 36. being fed to such interspaces after the air has been confined within such interspaces by the teeth bounding the same and the inner wall of the two-lobed casing 30. Just before the interspaces come into communioaticn with the discharge orifice 32 in the mutilated nose 30, between such casing lobes, communication of such interspaces with such lubricant-supplying ducts is interrupted 'bythe shields 51 and 52 so that the pressures in such interspaces, to which such lubricant fluid is subjected, will not counter balance and the interspaces be prevented from being properly filled with lubricant fluid.

The means K for operatively connecting and. disconnecting the drive shaft G with or from the rotors m comprises a gear 55 mounted upon the rearward end of the shaft 22 of the lowermost rotor m, saidrotors being shown as arranged in a superposed pair;

and said shaft 22 extending rearwardly beyond the bearing 23 as clearly shown in Fig. 2; with which gear 55-meshes a pinion 56 upon the power shaft Gr. Said means K further include dogs 57 pivoted to the hub 57* of the pinion 56, which pinion and hub are loose upon the power shaft G, said hub extending forwardly from the pinion to carry such dogs, and said dogs being outwardly urged by compression springs 58 seated in recesses in the hub, said dogs 57 being adapted to enter notches 59 formed in the inner surface of a shell 60 fast upon the power shaft G and surrounding the hub 57', and spaced therefrom'to accommodate such hub and the dogs carried thereby. The dogs are provided with angular ears 61 projecting beyond the rearward end of such shell 60., and outwardly beyond the periphery thereof, as shown in Fig. 2-, into position to be engaged by beveled portions of an inner scalloped surface 62 of a still outer shell 63 surrounding the shell 60 and adapted to play lengthwise of the power shaft G so as to force inwardly the dogs 57 and limi'ttheir engagement with the notches 59 to free the hub 57" from the shell 60 which is fast upon the power shaft G. The means K and is are utilized for the purpose of shifting theshell 63 lengthwise of the shaft G: to permit the rotative coupling of the hub 57 with the shell 60, and to terminate such rotative couple. These means are organized as follows: The outer shell 63 is likewise rotatable about the shell-60 and is provided with diametrically opposed heads (iwhich project througlrcam slots 65 in a fixed annular housing 66 projecting rearwardly from the back or rearward head 16 of the housing N, and surrounding the shell 63. 'hese heads when caused to play in the annular inclined cam slots 65 upon ro tation of the shell 63, cause such shell 63 to move longitudinally of the power shaft G, whereby the fluted inner surface 62 thereof may be caused to force the dogs 57' in-= wardly to free the hub 57 from the shell 60 fast to the power shaft G, or-to permit such inter-engagement of the dogs and shell 60 for the purpose of establishing rotative couple between the hub and such shell fixed to the shaft G, so that such shaft may be" rotated by the crank shaft H of the motor C. The means F for manual control of such last described means, including the, heads 64 fixed to the shell 63, include a cou-' nectingrod and crank 67 or the like for rocking a short shaft 68 journaled at one side wall of the housing 0, which inturn oscillates a fork 69 embracing one of the heads 64, whereby theshell 63 may be ro tated and advanced or retracted to permit the-engagement or diseiigagement of the dogs 57'with the shell 60 as above set forth. The means 76 more particularly are for automaticope'ration of the shell 63, and of the several features included in the means K above described.

These means lcinclude a plunger 70 mounted in guides 71 mounted upon the journal 23 and fixed shell 66 respectively. This plunger '70 is squared at its lower end to prevent rotation and is. round at its upper portion'jand at such portion is surrounded by a coil compression spring-72 confined by the uppermost por tion 'of'the squared portion and the upper. keeper 71, whereby it is held in engagement with the other head 6% by means of a forwardly. projected finger 7O always in contact with such head. The'plunger '70 is held in normal elevated position, permitting the rotative couple of the power shaft and the pinion 56, by an angular dog 73, which takes under a nose 74 inthe square portion.

of the plunger, holding such plunger up against the compression of the spring 72. This dog may be released trom the plunger to. allow thesame to be depressed, to ro-' tate the shell 63 to engagethe same with the dogs 57 and permit the uncoupling of the pinion v56 and the power shaft G, by means of a, finger 75 carried by a smaller ratchet 7 6 turnable uponanarbor 77 in a bifurcated I bracket 78 fixed as .at 7 9 to the head 16, there being a larger ratchet 80 rotatable upon the same shaft or arbor, and having a single notch .81 between two of its teeth, project ing inwardly to the same depth as the notches .of the smaller ratchet 76. .VVith these ratchets cooperates a pawl 82 which is mountedupona crank 83 connected with a.

shaft B i -to which is fiXeda large gear 85 :meshing with a small pinion 86 inserted in V the rearward end of the shaft 22 of the lower rotor m. The gear ratios of the pinion 86 .and gear 85 are such, that upon thecompletion. of a predetermined number of rotations of the rotors m, the pawl 8-2 is given an endwise movement to move the larger ratchet 8Qone. notch or step, and when one complete rotation of the larger ratchet has been completed so that the pawl comes into theenlarged notch 81 in such larger i 80, so that a complete'revolution of the ratchet, it is likewisebrought into one of th'ejnotches' of the smaller ratchet 76, giv- "ing that a one step actuation. A certain ratio exists between the movements of'teeth.

upon the smaller ratchet 7 6 and of the single enlarged notch 81 upon the larger ratchet smaller ratchet 76 takes, place on the completion ofa predetermined number of rot-a tions of the larger ra'tchetBQ, resulting in a complete rotation of the. finger 7 5 which once during each rotationactuates the dog 73 to withdraw it from the notch 74in the plunger and permit the-same tofalllunder. compression'of the spring'72 to rotate and rearwardly move the shell .63: to free 1 the dogs 57-fro1n the shell 60 and disconnect the pinion 56 from the power shaft-Gr. Thus the Shaft it may be providedthat on sayone thousand revolutions of the rotors m the shaft, Gwill be automatically disconnected from the pin ion 56; whereby pumping-action will cease, as the pinion 56 will stand idly upon the power shaft G, and the meshing gear 55 of a stop.

" Asabovo stated, this coupling or 11110011.. pling of the power shaft G from the pinion 56 'for'starting" or stopping the pumping the lower rotor shaft 22 will be brought to V action may likewise be voluntarily produced 'throughthe means l and the crank rod and crank 67 or the-like, to operate the shell (33 to act upon the dogs 57 as above set forth, movement of the shell 63 in'a rearward direction disconnecting the power shaft G fromthe'pinion 56, and movement'ofthe shell 63 in a forwarddirection operatively connecting the power-"shaft and the pinion 56. When the she-ll 63 is by means vof the meansF moved forwardly to establish rotative couple of the power shaft and the pinion 56, the plunger 70 is again raised by its head (Stand aleaf spring 87 forces the dog 73 back into the notch 74: in the plunger,

setting the means ]t' so that they may again automatically operate to release the power posed in positions toengage with radial arms 88 projecting inwardly fromthe annulus 55, segmental coil springsSSt being. stopped each atone endby one of the arms 88 and one of'the'arms88 to theend that rotation of the annulus 55 by-the pinion 5 6" will be transmitted to the shaft :22 through a yielding take up, such annulus 55* rotatin'g such shaft through the hub 8'8 which is set into motion through the springs 88. Thus sharp and abrupt initiation of pumping action is; obviated,fand the rotors at all times are driven subject to the yield of the spring cushion provided by the springs 88 g or the springs beingcompressed to their i 1 limit an un ielding bridge is interposed between the annulus 55 and the hub 88?. 1

3 The' means L for automatically opera} 'tively coupling therotors m w1th the drive shaft Gto turn the motor crank shaft H for the purpose of starting the motor, and of course in the same. directionin which such motor shaft turnswhen the rotors are compressing fluid as a pump, comprises, as about. to be described, means wihereby' re versed rotation of the rotors is converted into rotation of the drive shaft in the one direction in which it at all times rotates. To this end, I provide upon the rearward end of the shaft 22 of the lower rotor m,just forward of the small pinion 86, a pinion 88 into which the rearward end portion of the shaft 22* is formed, which meshes with an idler 89 carried upon a stub shaft 90 mounted in the rear plate 17 of the housing 0, and which in turn meshes with a large gear 91 having as a center the power shaft G. he pinion 88 of course rotates in one direction during pumping action and in the opposite direction during motor starting action, and the idler 89 is introduced within the train of gears of the means for the purpose of providing rotation of the gear 91 in the same direction as that in which the power shaft G is always to he rotated. The gear 91 comprises a peri Jherally toothed annulus 91 which directly meshes with the idler S9, and has a rearward hub 92 rotative upon the power l. aft G. l Vithin such annulus 91 is provided a 'metallic liner slightly dished in form, and into which fits a similarly formed annulus Qheld frictionally therein by compression springs 95 housed in chambers in an annulus 96 having a hub 97 which is rotatable upon the shaft G. inward of the annulus 94is mounted a further annulus 98 having ratchet teeth 99 upon its outer periphery, such annulus being keyed to the power shaft G. Further within the annulus 9% are provided a pair of segmental shoes 100, embracing the power shaft G frictionally, and held lightly to such power shaft by compression springs 101 surrounding pins 102 which are applied to ears 1023 upon such segmental shoes 100. The annulus 94: carries a pair of diametrically opposed dogs 104 each of which is provided with a rounded outer end portion 10l seated to rock in a suitable recess in the annulus 94, such dogs being adapted to'take iutoithe teeth 99 of the ratchet 98, when forced thereinto in the manner about to be stated. To produce this result, rotation of the annulus 91 causes rotation of the annulus 9% through the liner 93, which occurs upon the rotation of the rotors m in motor starting action, the annulus 91 rotating idly an opposite direction when the rotors m are pumping. Rotation therefore of the annulus 91 in the direction indicated by the arrow acent' thereto in Fig. causes the dogs/10 i to be swung inwardly, fingers 104: upon such dogs and received within recesses 104 in the shoes tripping such dogs and causing such engagement thereof with the ratchet teeth 99, whereupon the powershaft G is caused to rotate, after the ratchet annulus 98 1S keyed to such shaft.

Therefore upon rotation of the rotors m in a starting direction, the shaft G is rotated in its normal forward direction, and the motor is turned over and started in the usual manner through the crank shaft H. The annulus 97 is mounted upon the annulus 91, as by screws or the like 105.

l Vhen the rotors m are operated in pump ing direction, the idler of course executes rotation in a direction opposite of that indicated by the arrow in Fig. 4c, the annulus 91 and the annulus 91 are operated in a direction the opposite of that indicated by the arrow in Fig. 2%, ahd the lingers 10% on the dogs 10% are swung by the shoes 100 so as to drive the dogs outwardly from engagement with the ratchet teeth The shoes 100 travel with the annulus 9%, at such time, so

that the fingers 10% remain within the re-' cesses st, ready to actuate the dogs inwardly to the ratchet teeth for motor starting action upon reversal of the rotation of the rotors m. Thus, the means L just described only operate when the rotors are operating in a motor starting direction, and of course at such times the means K for operatively connecting the rotors with the power shaft G for pumping action are thrown out of operation.

The pipe E preferably admits the coirpres-sed fiuid to the container D, and withdraws the same from such container, at the bottom thereof, to the end that any lubricant which may be carried over into said container with the eon'ipressed fluid will first he withdrawn from such container when compressed fluid is taken therefrom.

l have not described in detail the construction of the check valve but the same may be of any preferred construction and so mounted as to be unseated by the means l when motor starting is to he performed by I 105 the mechanism. The means F further include the link and crank 67 for manually throwing into or out of operation the means K for driving the rotors forpumping purposes,

' The operation, method of use and advantages attaching and pertaining to the imiroved mechanism constituting the inveniou and as exemplified in the particular of construction and interrelation of features disclosed in the drawings and above described will be readily understood from the foregoing description, in whiclrthe operation of the several elements and groups of elements and'f'eatures is detailed, taken together 'ith the accompanying drawings and the following statement When it is desired to initiate pumping action through the rotors m, to store compressed fiuid, such as air, in the container D, the means F are utilized at the steering col umn b, to rock the shell 63, whereby the dogs 57 are released for co-engagement with the shell 60, thereby rotatively coupling the pinion 56 through its hub 57, with the power shaft G, and causing the rotation of joint rotation of such rotors thereupon commences. Thereupon fluid to be compressed such as air and lubricant fluid, are both drawn into the housing through the pipe 39, at the connection nipple 40, from a lubri cant tank as above'describet, and a 'lubri-' cant fluid is discharged within the housing 0 over the gears and other features of the means IQ and L within such housing, pro viding a lubricant bath within such housing to insure free running of the working partsthereirc Likewise, such lubricant fluid and air are drawn from the housing 0 through the port 38in the rear head 16 of the housing N into said latter housing, both fluids passing through the pipe 36 from such port .38, upwardly to the port 37 in the easing of the rotors. Both fluids are passed around the rotors, and discharged at the discharge orifice 32* into the chamber and he lubricant directed downwardly in such chamber to the lower portion of thechamber 33 withinthe housing N, where such lubricant tends to provide a charge of luloricant fluid within the lower portion of such chamber 33. The air compressed between the rotors, by being subjected to pressure of the inter-meshing teeth thereof, passes through the shield 34 at the port 46, traverses the surfaces of the bafiies 4:5 and a7, in'a tortuous course, tending to rid such compressed air of any content of lubricant fluid, and then rises to the upper end of the discharge pipe 41 through which it issues to the connection nipplee i and is conducted by the'pipe E to the container D. After the normal charge of lubricant, which is predetermined, is drawn into the housings N' and 0, so that a proper level of the same is established in each housing, and no moreof such fiuidis passed through the port 38 into the chamber 33, and the level of such lubri cant'fluid inthe chamber 33 is so low that only air passes through the port 38 and'is carried upwardly through the'pipe 36 to the port 37 air alonewill be supplied to the rotors to. be carried by the interspaces between the teeth thereof around said rotors and to the compression zone, where compression and discharge willtake' place through the orifice; 32". i In order vto continue the supply of lubricant to the rotors during such normal stageof pumping operation, and in order to enhance thecompressing action of said rotors, the several ducts 52-, 52, 52", and l8, 51 and 51 and their attendant features are provided, servingvto draw lubricant from the well at the lower 'portion of the chamber 33, at the :front of the rotors by means of the smaller port 49 and larger port 50,- and at the rearof the rotors by means of the smaller port'53 and the larger port 54, respectively, from the left and right-hand zones of such chamber 33, so that stagnation of the lubricant fluid 1s obviated,

and a constant circulation and utilization of above described, the connnunicatiouzof such ducts with the interspaces during communication of the interspaces with the discharge orifice being prevented by the shields 51 and 52 over the respective ports 51 and 52. The lubricant so supplied by said ducts effectively seals the rotors. to preventair slippage, and efiiectively lubricates the working surfaces of such rotors, and also being supplied 'to the interspaces between the teeth and at the ends thereof and subsequent to the rovision of aircharges in such interspaces, causes a'lubricant piston compression ofthe air'in such interspaces prior to the final compression by intermeshing of the teeth of the rotors, which" results insqueezing out the compressed air froin-the interspaces through the discharge orifice 32, followed by an expulsion ofsueh oil pistons which are discharged through the passage 35 and fall into the lubricant well in the lower portion of the chamber-3 3. When it operation of the rotors for pumping action.

Or, if it be desired that a predetermined amount ofcompressed fluid be introduced within the container D,- the automatic means lacomprised within the means K may be re lied upon; the plunger 'l'Q, whichvhas been set and lockedby itsdog 73 when the pinion 56 was rotativelyicoupled; with the drive shaft G. being freed from such dog :by the finger 75 atthe end of a predetermined number of rotations of the gear 85, through the agency of the pawl 82 crankedi'o the shaft Satof such "gala r 85. When the plunger 70 falls, it again rocks and rearwardly moves the shell 63, to free the pinion 56 from the drive shaft G, by releasing such pinion, through release of the dogs 57, from the ro-' tating shell 60. When the means K are thrown into operation, the plunger 70 is again set and held by its dog 73, for further automatic release in the manner-jus'tldescribed, unless the pumping has previously beenterminated ma-nuallyvby the means l Vhen it is desired to utilize any of the compressed fluid in the container'D, for instance to pump tires or for pneumatic gear shifting or other purposes other than motor starting, such fluid'may of course be withdrawn through a separate cockor connection, as d, indicatedin Fig. 1; When it is desired to utilizeth'e compressed 'fluid in the container D for starting the motor with which the mechanism Ais associated, it is only necessary to use the means F for u'nseating the check valve 6, whereupon compressed airis introduced within the chamber 83 in the housing N, through the discharge pipe 41 whichnow becomes a feedcpipe, and thence to the port 16 where such compressed air will pass through the orifice 32 and act upon the rotors to impel the same in the direction the opposite of that in which they move in the pumping action, such compressed air filling the interspaces and excluding the lubricant seal supplied in the pumping action by the several ducts 48 and 51 and 51", and 52 and 52 and 52". This lubricant will however be supplied to the teeth of the rotors to lubricate, the same. The compressed air so reversely operating the rotors escapes through the ports 37 and passes through the pipe 36 and port 38 into the housing 0 where it is discharged through the pipe 39 and connection 40 to the outer air or to the tank or the like from which the lubricant is initially drawn, where screens and baflies may be provided to take out of the discharged air any lubricant, content thereof. As soon as such motor starting or reverse operation of the rotors commences, the annulus 91 of the means L is put into operation to turn the toothed annulus 98 through the dogs 104 which are tripped by the shoes 100, such annulus 98 rotating the power shaft G in the normal forward direc tion to correspondingly rotate the crank shaft H of the motor and initiate motor action, in the usual manner. This motor starting action is terminated by cutting off the supply of compressed air from the container D through the pipe E into the mechanism, which is done by again seating the check valve 6 by the means F.

If it is desired tomanually start the motor, or crank the same, a crank may be applied to the forward end of the power shaft G, and to pins 9 thereupon, which forward end is normally covered by detachable screw cap- 9 It is manifest that many departures from the disclosures of the foregoing specification and'of the drawings may be made in adapting the invention to varying conditions of use and service, and in accordance with choice of construction and inter-relation of parts and features, all without departing from the spirit of the invention and a fair interpretation thereof 7 Having thus disclosed my invention, I claim and desire to secure by Letters Patent: 1. The combination with a motorvehicle including an engine and engine shaft, of a combination fluid compressor and motor,

a compressed fluid container in communiautomatically producing an operative con-, 'nection between the compressor and motor and engine shaft when the former is driven as a motor.

2. The combination with a. motor vehicle including an engine and engine shaft, of a combination fluid compressor and motor, a com-pressed fluid container in comn'iunica tion with the compressor and motor, manu ally controlled means for operatively connecting the engine shaft with the compressor and motor to operate the latter as a compressor, means for automatically brealc ing the said connection after a predetermined operation of the compressor, means for permitting a reversed flow of compressed fluid from the container to the compressor and motor to operate the latter as" a motor, and independent means for automatically producing an operative connection between the engine shaft and the motor compressor when the latter is operated as a motor.

3. The combination with a motor vehicle including an engine and engine shaft, of a rotar T fluid compressor and motor, two independent sets of gearing between the compressor and motor and engine shaft, a m anually operated clutch controlling one set of gears which connects the engine shaft and compressor and motor when the latter is driven as a compressor, an automatic clutch for bringing the other set of gears into operation when the compressor and motor is driven as a motor, and means for permitting a reverse flow of compressed fluid from the container to the compressor and motor to operate the latter as a nrotor.

1. The comblnatlon wlth a motor vehicle including an engine and engine shaft, of a which is used when the compressor and motor is driven as a compressor, means for automatlcally releasing the clutch after a CLO predetermined operation of the compressor, an automatic clutch controlling the other set of gears, sald other set of gears reversing the relation of rotation between.

the engineshaft and rotary compressor and motor and being used when the latter 1s operated as a motorpand means for per- ,mittinga reverse flow of compressed fiuid a rotary fluid compressor and motor, aoom- V pressed fluid container in commimi cation with the compressor and motor, two inde pendent sets of gears between the engine shaft and compressor and motor, a manually closed clutch for one set of gears which is,

used when the compressor and motor is driven as a compressor, means for automatically releasing the clutch after a predetermined number of rotations of the rotary compressor independent of the fluid pressure, means for permitting a reverse flow ofcompressed fluid from the container to the compressor and motor to operate the latter as a motor, and an automatic clutch automatically bringing the other set of gears, into operation when the 'co; pressor and motor is operated as a motor. f H

In testimony whereof Ihave'signed' my" name to this specification in the presence of 7 two subscribing Witnesses.

MoRRIsTo. HITE,

Witnesses .7

' RAYMOND IVES BLAKE LEM FRANCIS L."Isenreo.

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