US1580318A - Fluid-operated jack - Google Patents

Description

April 13 ,1926.

' 1580,318 A, F NoRDENsKJoLD y FLUID OPEHATED JACK Filed Sept. 2, 1924 2 Sheets-Sheet l April 13 1926. 1,580,318

A. F. NORDENSKJOLD FLUID OPERATED JACK Filed sept. 2, 1924l 2 sheets-sneu 2 iNvENToR Patented Apr. v12?, 1926.

` UNITED STATES ANTON F. NORDENSKJOLD, OF PITTSBURGH, PENNSYLVANIA, ASSIGNOB TO UNITED- PAr-f'ENr OFFICE.

FOUNDRY MACHINE COMPANY, F MGDONALD, P ENNSYI'VAN-IA.

i 'FLUID-cremeren Jacx.

Application Med -Septexxxber 2, 1824. lSerial. No. 735,278.

To au whom it .mayooacern: f

Be it known that I, ANTON F. NORDEN- l SKJOLD, a citizen ofthe United States, vresiding at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Fluid-Operated Jacks, of which the Afollowing is a specification.

invention relates to fluid operated jacks, and while primarily intended for use in connection with motor vehicles, it is obvious that the device may be employed for any purposes wherein itis found to be applicable.

Important objects of the invention are to provide a fluid operatedv lifting apparatus for motor vehicles, which is permanently secured to and carried by-the'motor vehicle; which is power operated and valve controlled to elevate either the .entire vehicle, or any end, side or wheel thereof; which is l -so disposed on the motor vehicle as to be out of the Way normally and to be brought into service when required ,without diliculty;'

which includes an automatically regulated fluid distributing mechanism ypermitting `of the continued operation of the latter after the elevating members have reached their a manner as maximum extension, without liability of ldamage to any parts of the structure; and

which may be conveniently suited for installation to any type of lmotor vehicle Without requiring any additional materlals except thatincorporated in the invention.

Further objects of the invention are to provide a device of the character stated, in hereinafter set forth which will facilitate and expedite the elevating operation which may be operated from the drivers seat; which is simple in its construction and arrangement, strong, durable and eiclent 1n its use, compact, attractive 1n appearance and comparatively inexpensive to manufacture, install and operate.4

With the foregoing and other objects in.

view which will appear as the description proceeds, the invention resides in the combination and arrangement of parts and in the details ofconstruction hereinafter described andclaimed, it being understood :that changes in the'precise embodiment of the invention hereinafter disclosed can be made within the scope of what is claimed Without departing from. the spirit ofthe invention. l

In the drawing forming a portion of this specification and wherein like numerals of reference designate corresponding parts throughout the several viewsz- Figure 1` is `a top plan view of a lifting apparatus for motor vehicles lin accordance with my invention.

Figure 2 is a sectional view of the control valve showing the relative ositions of the parts -thereof during the owering opera tion. v

carried by the front axle 5, of 'the motorA and are disposed adjacent to revehicle, spective vehicle 'wheels A and B. The elevating mechanisms 3 and 4 are carried by the rear axle 6, of the motor vehicle and are disposed adjacent to res ective vehicle wheelsC and D. Each o the elevating mechanisms 1, 2, 3 and 4 is rigidly secured to respective vehicle 'axles 5- and 6 by a clamplng element 7, as clearly shown in Figure 4, of the drawing orin any other suitable manner. f

The elevating mechanisms 1, 2, 3 ahd 4A are identical in construction and each includes 4 is a side View of the elevating a cylinder 8 and acylinder 9 the former extending longitudinally forward of the axle on which it is mounted. and the latter extending longitudinally rearward therefrom. The cylinder 8 is provided with ,an associated longitudinally aligned guide member 10 disposed rearwardly of the vehicle axle ou which it is niounted, and the cylinder-9 is provided with an associated lon itudinally aligned guide member 11 dispose forWard-- ly of the vehicle axle. In otherwords, the

guidemember 11 extends parallel with and. is disposed along the outer side of the cylinder 8, while the guide member extends. parallel with and is disposed along the inner,

` side of the cylinder 9.

The cylinders 8 and 9 andthe associated guidemembers 10 and 11 are preferably constructed as integral casting, and the bores 412 of the vformer are separated from the guideways 13 of the latter by the transverselyldisposed partitions 14. The adjacent 'Vends of the bores 12 of a Apair of cylinders 8 and 9 are provided with anintercommunif.

. eating port l2 for the purpose to be described The other end ot' each of the cylinders 8 and 9 is closed by a cap 10 formed with acentrally disposed threaded aperture 11. Each of the partitions 14 is 'formed with a centrally disposed aperture 15 and With a stui'ling box 16, the latter be ing formed in theside of the that faces the' guideways 13.

A plunger 17 is mounted in thef bore -12 of each ot' the cylinders 8 and 9 and is con# nected to one end of a, plunger rod 18 which" extends slidably through the aperture 15 of" rthe partition '14. The other vl end ofthe plunger rod 18 is connected tothe" guide?- block 19 which latter isshi'ftably. mounted? in the guideway 130i each ofthe guide.V members 10 and 11. The guideways 13 are.,-

rectangular in vtransverse Vcross sectlonand the guide blocks 19 shiftably mounted there-Q inl are 'likewise rectangular y transversel cross section for the purpose lof preventing the rotation of the latter in the guideways the plunger rod 18in the partition aperture 15.4 The leg 21 extends through an opening 23 'in the guide member 10, 11 and is adjusted by 'means of the bolt 24 which extends therethrouvh and threadably engages in 'the lateralrly f shownin i disposed boss 25, as clearly gure 5, of the drawing. 'Each-of thev guidemembers 10 and 11 is 'provided with a longitudinally extending slot 26,'which is formed on the lower wall thereof adjacent to the cylinder 8, 9 'along f the side of which it is disposed, so that the slot 26 of one guide member will be 4longitudinallyaligned, as nearly as possible withthe slot 26V-of the other guide member;-

partition 14 carried by .casing 35 is is similarly connected to the guide block 19 ymounted 1n the guide member 10. vThe lower ends of the togglebars 27 and 28 are pivotally connected to the foot 30 by a com-1 mon pivot pini-I1. As the upper ends of the bars 27 and 28 are pivotally connectedto respective guide blocks 19in opposed guide Av members 10 and 11, the movement of the i' guide blocks 19 toward each other will actf v to distend the bars 27 and 28 whereby they Will exert an endwise pressure Whichin creases as thev bars approach a vertical o sition, While the movement of the gulde4 vblocks '19 in a direction away tfno-m each other will lact to collapse the bars 27 -and f 2 8-against lthe motorvehicle frame structure. 4 v f An operating fluid reservoir 32 is tixedly supported in any suitable manner to the .frame structure of the motor lvehicle, and 'a fluid pressure .pump 33 is` likewise fixed to the latter in any suitable mannerand position to tor vehic vfluid 33. ,-A' our way valve ferabl .located to'permit of its'manipulation 39 and 40 and the valve 36 is provided with elementi, consisting'A .of the. valve casingxandthe valve 36, is

thejmotor'vehicle and-.is pre- Y permit of. the .operation ofthe mo e engine to. drive and operate the:

rom-the operators seat." The valve]l provided Ywith four ports. 37, 38, llooj a pair of-communicatingportstl and 42 and with a ipair of Vcommunicating'ports 43 ing port 37 withthe fluid reservoir 32.*' An uidv Supply pipe 45 connects the lt 33 withlthe valve casingport 39, and 'I' intake pipe 47-connect`s the reservoirr32 with i the pump 33.' vA reliefvalve 48 for the purpose hereinafter stated, is mounted in the' su ply pipe 45 and is connected to the inta e pipe 47 by the relief pipe 49. v f

Ports 12 of elevating mechanism 1 and`3y are connected by the common elevating con'- duit 5'0 and the ports 12 of the elevating mechanisms 2 and 4' are connected by a simi- A common lower lar elevating conduit 51.- ing conduit 52 is connected as indicatedat 53, in each of the apertures 11l of the cylinf ders 8 and.9 ofthe elevating' and in each of the apertures 11 of the cylinders 8 and 9 of the elevatingV mechanism'3. A similar lowering conduit 54is connected as indicated at 55,in each ofthe apertures 11 of the cylinders Sand 9 o f the elevating mechanism 2 and in each of the apertures 11 of the cylinders 8 and 9 of the elevating v Each of the. elevating mechanisms 1, 2, 3-v

:and 4 further includes a pair of toggle bars 27,1'` 28. The Aupper end of the bar 27 ex v"tends through the slot 26.-,and pivotally` mechanism 4.

The elevating conduits 50 and .51 communicate with each other through the cross connection- 55 which latter connects with the mechanism 1,' i

itsv v,5 2 and 5ftcommunicate other through .ther cross c :cgnnee-v with each i connection: 5.6V v'coin-jf' I ymur'licatea `with the elevating conduit 50.at"a' communicates with the velevating conduit int.l intermediate ofi-af pair' ofcontrol i 'I valves 60 and 61- mountedfin the conduit 50,-A L 1,0..

and the other -end of the cross connection at a-pointintermediate of a pair of `controli valves 62 and 63 mounted in the Acondu1t'51. 33 after the' elevating orlowering operation Une end o f the crossiconnection 58 communif- `cates withthe'lowering conduit 52 at a pointj intermediate of. a .pair of Con'tactvalvesI and 5mounted'in the conduit 52, and the" valves 66 and 67 .mounted in the conduit, f In practice theo as follovvs-z--l/.ssuming the inoperative position and it is-desired to municates with the lowering' conduit 54 at other end ofthe-cross connection 58 .com-

point intermediate of. a Vpair of control eration of Vthedevi'ee is that the device' 1s -in operate. allwof the elevating mechanisms 1',

2, 3, and 4 to elevate the entire vehicle, all

of thecontrol valves 60, 61, 62, 63,64, 65, 66.l and '67 are-opened, and the valve element- 34l 'isregulated to bring the valve ports 41, 42,A .43, and 44 into registration with respective valve *ca-singl ports 38,39, 40 and 37, as Q clearly `shown in Figure 3 of thev drawing.

The pump 33 is now operated by its connection vvith the operating. motor vehicle was forced into the cylindersS and 9 to acengine or by any other suitable driving -v medium. The operating-pump 33 will funcd from the tion to draw the operating flui and reservoir 32 through the intake pipe 47,

will force the lluid through the' supply pipe 45, through the valve ports 39, 42, 41 and 38 into the pipe 57 ,through the cross connec-y l tion v56, through the control valves 61, 61,

62 and 63 into the'elevating conduits 50 and.' 51, and'through the ports 1.2 which establish communication between the bores-11, of the cylinders v8 and 9, of.`respective elevating mechanismsl, 2, 3'and 4. I v When the apparatus is inthe inoperative position all of the plungers 17 thereof are 'positioned against respective partitions 14 at adjacent ends of the pair of cylinders 8 and bores 12 through the port 12 9, as shown in Figure 5, of the drawing. lVhen the operating fluid enters the cylinder it will act against the plungers 17 ,thereby forcing the plunger 17, mounted in the cylinder 8, out- If for 4any reason' the operation .olth-e,

reached.,1th e a v relief* valve 48 will function to .l

a-1low*the passage" offthe operating fluid through therelief ipe V49 back into the intake pipe, 47. lBytliis arrangement no damag'efwill result to the mechnism of the de .vice by the continued operation of the pump is completed.

;. .After che initial elevating@ lowering.

operation the bores 512 of-lallof the cylinders ferma-9 win betompietay allai with are operating fluid at all times, and to lower the 'l vehicle after *the elevating operation -as stated, the valve 34 is regulated to bring the valve ports 41, 42, 43 and 44 into registration with respective valve casing ports 37, 38, 39, f 'A and 40, :as shown in Figure 2,. ofthe draW- ing. force ythefluid through the lowering conduits 52 and 54, and into all .of the cylinders 8 and 9 through the' cap apertures 11 in which the various ends of the conduits 52 and 54 connect, as indicated at 53, and 55, respectively.

As the fluid is forced into the cylinders 87 The operation of the-pump 33 will then l and 9, during the loweringy vo ration` Athrough the cap apertures 11 the fluid which elevating conduits 50 and 51, through the valve element ports 38, 42, 41'and 37 ,into the return pipe 46jand emptyl into the fluid supply reservior' 32.

. During the lowering operation, the plungers 17 of each air of cylinders 8 and v9, will shift toward) each other thereby collapsing toggle bars 27 and 28 against the frame 'structure of the motor vehicle and elevating the foot 30 carried thereby to the inoperative position as shown in Figure' 4, of the drawing. y

During the elevating operation the supply luid would ,empty from the cylinders 8` and-9 in the reverse directionv to that described relatively to the lowering operation, and would be returned to the supply reservoir 32 through the lower conduits 52 and54. i

If the control valves 61 `and 65 are open and all other control valves are closed the operation of the device will elevate the veluclewheel A only. In like manner, if only control valves 60 and 64 are open Wheel C 1 if only control valves 63 be regulated to elevate any of the vehicle Athat the device shown in the drawings is merely illustrative', and that various changes in the form, proportions and minor details of construction may be resorted to without departing from the principle of the invention, or sacrificing any of the advantages of.

the invention, which come within the scope of the claims hereunto appended.

What I claim is:

1. In a devicel of the .character described, afiuid operated elevating mechanism coinlprising a pair of horizontally disposed cylinders, a guide member associated witheach of said cylinders and extending longitudinally therewith, a plunger slidabl mounted in cach ofsaid cylinders, a ide lock slidably mountedin each of sai guide members, a plunger rod connecting said plunger with said guide block, a toggle bar pivotally connected with each of said guide blocks, and a foot pivotally connected to the lower ends of said toggle bars, substantially as described and for the purpose set forth. 'Y

2. In a device of the character described, a fluid operated elevating mechanism comprising a pair-of horizontally disposed cylinders extending in opposite directions relatively to Veach other, a guide member rectangular in transverse cross section associated with each of sald cylinders and longilthe purpose'set forth.

tudinally aligned therewith,the lower wall of each of said side members formed with a longitudinally extending slot disposed adjacent to the inner side wall of said slot, a plunger slidablyA mounted in each of said cylinders, a guide block slidably mounted in each of said guide members, plunger rods I connecting said plungers. with associated guide blocks, a toggle barpivotally connected to each of said guide blocks and extending through slots, and a foot pivotally carried at the lower end of said toggle bars, substantial-1y as described and for the purpose set forth.

` 3. In a device of the character described,

the combination with a motor vehicle, a fluid operated elevating mechanism attached to the axles of said motor vehicle .adjacent to each wheel of the latter, each of said mechanisms including a pair of toggle bars carrying a foot, and power operated means for selectively operating said elevating mechanisms for distending and collapsing said t-ogf gle bars, substantially as described and for the purpose set forth.

4. In a device of the character described, l l

the combination with a motor vehicle, 'a Huid operated elevating mechanism attached to the axles of said motor vehicle adjacent to each wheel of the latter, each of said mechanisms including a pair of toggle bars carrying a foot, power operated means for selectively operating said elevating mechanisms for distending and collapsing said toggle bars, and means for automatically vcontrolling the operation of said power operated c means, substantially as described and for In testimony whereof I aiiix signature.

ANTON F. NoRDENsKJoLD.

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