US1418912A - Cushion mechanism - Google Patents

Description

E. J. GLACKIN. `CUSHION MEcHANlsM. APPLlCATlON FILED MAR. 7. 192|.

1,418,912. PatentedJune 6,1922'.

3 SHEETS-SHEET l.

' E. J. GLACKINQ CUSHION MECHANISNI.

APPLlcATloN FILED MAR. 7. |921.

1,418,912. Patented June 6, 1922.

s SHEETS-SHEET z.

E. J. GLAcKlN.

` CUSHIONMECHANISNI. APPLICATIONv FILED MAR. 7,1921.

1,418,912. y Pantedlune 6,1922.

a SHEETS-SHEET a.

STKE-'5 EDWARDJ. GLACKIN; F (.XIdIGiGrOi ILLINOS.

CUSHION MECHANISIVI.

Lei

Application filed March 7,

sorbers so mounted between the body and the chassis of a car that the body is free to sway sidewise within its intended limits., without in any way interfering with the operation of the absorbers.

lt is linally concerned with certain simple and novel fittings whereby suchi shock absorbers may be quickly and easily applied to the chassis and body of a motor car as supplementary to the springs with which vit is' initially equipped.

To illustrate my invention, I annex hereto three sheets of drawings in which the same reference charactcrs'are used to designate identical parts in all the figures of which- Fig. l is a side elevation in dotted lines of a vehicle having` my improved shock absorber applied thereto in the manner shown in the full lines of said ligure;

Figs. 2 and 3 are similar views, but on an enlarged scale, of a portion of the machine as seen in front and rear elevations;-

Fig. el isa similar view in section on a still larger scale on the line ifs/l of Fig. 2;

Fig. is a plan view in section on the line 5 5 of Fig. 4i;

Fig. 6 is an enlarged detail ofaportion of themechanism shown in Fig. 4; n

Fig. 7 is an enlarged detail in section on the line 7-7 of Fig. 2;

l? S is similar enlarged detail in section ony the rline 8 8 of Fig. 31;

Fig. 9 is a top plan view ofa portion ofA one of the shock absorbers app'lied'to the rear axle; and

Fig. 'lO is a detail in section, on an enlarged scale7 on the line lOwlO of Fig. 9.

ln illustrating my invention, I have shown it as applied to a well known type of machine in which the body 11 yhas at its front end the supporting cross beam 12,.

Specification of Letters Patent.

Patented une 6, 1922;

1921. Serial No. 450,242.

which is of inverted Ushape in cross section, and has the bow spring 13y secured at` its center in the cross beam by the Ll-'bolts` lll. At the endsof the bow spring are the links by which the ends of the spring are connected to the supports 16y secured to the front axle 17 so that the frontof the body is free to sway from sideto side within the limit permitted by the'employment of the links l5. At the rear is across beam li, of an inverted U-shape in cross section,

and having the curved central portion 19 in which is placed'the similarly curved een.

tral portion of the bow spring 20 which is connected at its ends by the links 2liy with.

the brackets 22 projecting inwardly from the upper ends ofthe shallow cylinder casings 23 secured. to the ends of the hollow tapered axle 24 having the customary diflerential gear casing 25 at its center. It will of course be understood that the structure thus far described is old and well known, and per se, forms no part of'myin# vention.

The shock absorber units eachv'comprises a cylinder portion 26,- preferably made of metal, and having its lower end. closedair tight by a casting 27, which preferably takes the form of av bracket, as subsequently dcscribed, and has in its upper surface 'the annular seat 28 in which the lower end of the cylinder 26 is brazed or soldered, or otherwise secured to make an air-tight joint. On the under side of the bracket is a downwardly projecting annular flange 29, which is employed to protect the valve 30 secured in the bottom of the cylinder and by whichy the air inside can be compressed. The upper end of the cylinder is preferably provided with an enlargement 3l, which takes the form of an annular liange having its upper portion internally threaded so as to be engaged by the clamping ring 32 having the lower portion of its exterior .threaded and its upper portion preferably hexagonal in its horizontall outline so thaty a wrench can be readily applied thereto. In the space between the top of the cylinder 26 andithe flange 31 is an annular seat Bljwhich, as best seen in Fig. 6, is preferably rectangular in its vertical cross sectiomand'is adapted to receive the lower portion of the annular flange forming the bottom ofthe dome shaped cap 36, which is preferably formed of rubber, reinforced with canvasor some other suitable liber to give it increaseddurability. The flange is connected with 'the generally semiciroular body portion ot Vthe cap by a, neet 37, which rests on the top ot the cylinder 26, and is sunee'f'zed between it and the downwardly projf-otinu` nnnulzn' fla-nge portion 353 ot :i dumping ringgj 3i?, the under surface of which is shaped to or,A4 operate with the neck 37 and the upper portion ot the ienge 35. l lts top is that, and is engaged by the bottom of the ring B2, the inner surface Ll() of whit-h is curved to oorrespond with the dome shape assumed by the rubber oop 36i sind cap haring its normal shape that o'li :il dome, nud this l'ieino.v ot course enlarged somewhat when the cylinder is inflated through the valve 3d l have tonnd by experiment with u siniilar cylinder and dorne shaped cop that when it is strongly inflated und when a, henry pressure ,is applied thereto by the plunger to be hereinafter deseriberfh there is u very strongtendency tor the .tienne to pull out of its seat by being compressed and turned at right angles to its normul shape und te remedy this. l insert in the 'Hannie Sf`| the metal ring); el, which is preteraoly u strip of spring` steel und ot the sinne general outline in cross section ns the lionne in which it is embedded. when the cup is molded. l have tound that the employment oi" this ring absolutely prevents any possibility ot the dome being` pulled out ol' its place, rind, when the parts ure assembled` :is showin and the ring 32 is screwed down tijfrht;r :in nir-tight joint is prodi'u'ed, and I usually further insure this joint beingv air-tight by dipping the tlange in u liquid cement before it is seated in the channel fehl. Cooper-- ating' with the dome or cup Sti .is the llead 4t2 of the plunger, which is preferably a heavy metul d'. with its under side rounded, as shown1 und suppfrirted by the threznled rod 43 screwed into the reeess in the bottoni thereof. The upper end of the rod E pz es through en aperture in the brarlret rusting; 4A, which will have u shope to be deseribod, und on the upper end l screw the uut lo to firmly elainp in plume the washers ith which may be ol any desired Inateriah und which nre preilierubly oit dilterent thicknesses so thatvthey en be adjusted to :i ninety to Cause the ourved luider surtaee o. the head 4t2 to rest lightly on the top o." the cap 36 when the absorbers are secured on the vehicle und the seme eontuins its average load.

The bracket 2T For the cylinders used with the front ot the rnaohine has the extension 4:7, best seen in Figs. i und 5N which ex'-A tension is provided with the ujiwurdly projecting' lugs t8 und which torni a seat for the bottom ot the axle 17, which is in the general torni` ot nn t beam, of varying' heights, however. The extension if? is provided with tour apertures suitably located to rereive the lower ends of the parir of U- 52 through an enlurgement 5? of which entends the aperture tor the bolt 4:3. This rearwardly extending portion of the brneliet Le has the downwardly and inwinvlly inclined portion 54, which is provided with the sent for the end oit the cross benin l2, on either side ot the pair o l upwardly projecting ribs 54 and also with the lugs 5353 provided with the apertures 'For the lil-bolt 56 extending therethrough and over the cross bezirn l2. itssooiated with the l'n'wurd portion oi this liirnoltet is the Ubel t 5i' pussing` through :uiertures in the brochet und which fits ove un extension of or an uttuthnient 5T to the ff ross beam l2 in the manner seen. lWith this oonstructimi. it will be obvi ons that the plunger 4t2 can be niiounted on each end ot the cross benin l0 without in any way interfering' with its originel oonstruetion and inode ot operution und sinnlarly the brurltet 27 eun be mounted on the uxle so as to bring the oeps 3G directly beneath 'the plungers simply by applyingthe psu-ts to the urlo und plneiirgund securing; the U-bolts.

For the roer u\:ley l provide the oustinns best seen in hl'f', f ll and llh :1nd the purts (,:ooperatine' n th the oylinderel 26 are the saune as the brackets or uastinejs 5&7. 1he evteusion, however, is provided. Awith the pulir ot upwurdlj-f extending' projections 5l) und (Sth the inner surlnres oll which :ind the oon- 'neeting portion 'torni 'the seinioirenlur sont tor the taperingv hollow uxle 2h and the bruehet 58 hns on either side ol these projections 5t) and 6l) the puir olf ajlerturzs to receive the U-bolts (3l oooperuting with the axle and the brarhet in the rustonia ry man nel'. is the orliiulrioal and tnpered torni of the urlo let would render it Llil'lioult to keep the ports in planea l 'lorm on the hruolret 55% un extension G2 lnivixnr un aperture therein through which l pass the bolt G53, whirh ulso busses through un aperture in the end ofA the brare bar 3i-l which hns secured in its end a Li-bolt till, thriiugrh whioh passes the brave rod exten/.ling trom the easing il?) toi-wurd to the rearh o l1 thoehnssis. The employment ol' this bruce rod serves to zur ehor the brurlut 5S in position, and said brochet and the bran-e bnr (iii ran be applied to the machine es it stunde. Cooperating 'with the cylinders on the rear axle nre the seine plungers 42 having, however, the lonpjor rods 4? and stem washers e6, end 'he upper ends ol' the'rods pass through pen tures in the brackets 65 which like the brackets Llei have the generally right angular shape, but with the inwairiTlly projecting por tions 6G of a shape adapted to lit into the open under sides of the cross beam 19 with their inner ends resting on they cross pieces 67, which torni a part ot said cross beam 19. A. boltGS` is passed through an aperture in the portion 6G oit the bracket andv also through an aperture which exists in the top ot the cross beam 18, thus serving'l to secure the rear plungers in place and readyY to cooperate with the caps 3G.

lt willbe obvious that with the construction shown, the plungg'cis 4t2 can have a con siderable amount oic lateral play without gettinz;` orll oit or out of cooperative relation with the caps 36, so that these shock al sorbers can be added to the machine without interfering in any way with its opera tion, as the body trom time to time is still 'tree to sway sidewise relative to the chassis as much as the use of the links i5 and 2l will permit.

While l have shown and described my invention in the ttorm which l at present consider liest adapted to carryout its purposes,

'it will be understood that it is capablev otA modifications, and that I do not desire to hc limited in the interpretation ot the itollowf ing' claims except as may be necessitated by the state ot the prior art` illhat l claim as new. and desire to secure" byv Letters Patent ot the lllnited States, is

1. ln a vehicle, the combination with a chassis, ot a body, bow springs `interposed between the axles and the boey, link connections between the ends yo'l'the springs and the aides. two pneumatic cidinders liavinpj dome-like Flexible tops attached to each of said axles toward the sides et' the body, and a plunger having` a. rounded'end cooperatiiig,v withA each of the tops ot the cylinders so that they can move transversely relative thereto, said pluncers secured to the ends ot' the body beams to which the' centers oit the bow springs are secured.

f lu a vehicle, the ffombination with a ol: a body. bow springs interposed between the axle and the body. two pneuin atie cylinders attach ed to each ot said Xles toward the sides o'l` the body. a plunger eooperatinp; with each et the evii'iders. said pluiifgers being?? secured to the ends ot the body beams to which the centers o'it theb'ow springs are secured, brace rods` extendin'c; trom the ends ot the rear axle to the reach. and tie pieces extending troni the base of the rear cylinders to the brace rods.

3. In vehicle. tljie combination with hodvhavine transverse heams,rinverted lilshape in cross section, secured to the front and rear thereot. ot a chassis, bow springs secured atl their centers in the transverse body beams,V connections between the ends of the bow springs and the twoy axle bars permitting transverse movement of vthe body relative to the chassis, downwardly entending plungers supported .trom the ends oit the body beams and moving transvc sely therewith, and pneumatic cylinders supporcl trom the axles yand extending upwardly therefrom directly beneath thc plungers which cooperate therewith and can more transversely thereof within the limits olf die transverse movement permitted by the spring` connections. f y

et. ln ay vehicle, the combination with a body having transverse beams, inverted l3- shape in cross section, secured to the 'lront and rear thereoi", ol a chassis, bow springs secured at their centers in the transverse body beams, connections between the ends oi" the bow springs and the two axlebars, downwardly extending` plungers supported i Alroin the ends ot the body beams, pneumatic cylA inders supported from the axles and entendv ing,` upwardly therefrom directly beneath the plungers which cooperate therewith,- and brackets connected tol the plungers and cylinders and shaped so as to be secured by U4 bolts to the body beams and axles.

5. ln a vehicle, the combination with arear axle, ot a pneumatic cylinder having` its base formed with a` bracket adapted to lit to the under side oi the axle, a Ubolt cooperating with the aille and the bracket to secure theflatter in place-on the axle, .a brace rod extending` r from the end of the asile to' the reach, 'and a tie piece secured to the bracket and the brace rod tor tiek purpose described. f

G. ln a. device of the class described, the combination with an air-tight metallic cup closed at the bottom, saidcup beingprovided at its top with an annular "channel, ot a fieri-- ble dome-like cap adaptedk to be seated in said channel and to be reversed into the cup,

theportion ot saidcap entering` the channel beingv provided with a metallic ring` embedded therein vtor the purpose described, and a ring.` securedon thetop of the cup and holding` the 'cap in place forming*y an airtight joint between it and the cup tor the purpos described.

7. ln ay device of the class described, the combination. withv an airtight inet-allie cup closedl at the botizom, said cup being lproV vided at its top with an annular chaniiel,oi`

a' flexible domedike capr adapted 'to be seated in said channel and to be reversed intor the cup, theportion yof' saidcap enterinrxthe channel being` provided with a metallic ring; embedded therein forthe purpose de. ibedly said ring' being elongated in cross section parallel to the axis thereof, and a ring secured onthe top of the cup and holding` the cap in place forming an air-tight joint between it and the cup tor the purposedescribed. f i

iso

8. ln a device of the class described, the combination with an air-tight metallic cup closed at the bottom, said cup being provided at its top `with an annular channel and at the bottom having` a bracket termed integrally therewith by which. it may be secured to the axle ot a vehicle, oi a flexible domelilre cap adapted to be seated in said channel and to be reversed into the cup, and a ring secured on the top of the cup and holding the cap in place forming an air-tight joint between it and the cup for the purpose described.

f), ln a device ol" the class described., the combination with an air-tight metallic cup closed at the bottom, said cup being provided at its top with an annular channel and at its bottom with means for securing it to the axle et a vehicle, of a Hexible domeeliltc cap adapted to be seated in said channel and to be reversed into the cup, a ring secured on the top oil the cup and holding;4 the cap in place forming an air-tight joint between it and the cup :tor the purpose described, a rounded head. adapted to cooperate with the top ol the cap, a stem 'for said head, and means for securing the stem to the body of a vehicle.

10. In a device of the class described, the combination with an air-tight metallic cup closed. at the bottom, said cup being provided at its top with an annular channel and at its bottom with means For securing it to the axle of a vehicle, oil: a flexible dome-like cap adapted to be seated in said channel and to be reversed into the cup` a rino; secured on the top ot the cup and holding' the cap in place forming' an air-tight joint between it and the cup 'for the purpose described, a rounded head adapted to cooperate with the top ol the cap, a stem for said, head, and a bracket secured to the stem and adapted to be secured to the body ot the vehicle.

l1. In a device of the class described, the combination with an air-tight metalliccup closed at the bottom, said cup being` provided at its top with an annular channelv and with th reads, ot a flexible doulelike cap adapted to be seated in said channel and to be reversed into the cup without enffaging the walls thereof, and a ring1 screwed on to the end ol the cup and securing the cap in place formingan air-tight joint between it andthe cup `l'or the purpose described, said ring having' its upper inner portion shaped to lit comple-mentarily on the expanded cap.

l2. ln a device ol the class described, the combination with an air-tight metallic cup closed at the bottom, said cup beinprovided at its top with an annular channel and at its bottom with a pneumatic valve, oill a flexible dome-like cap adapted to be seated in said channel and to be reversed into the cup, and a ring; secured on the top of the cup and holding the cap in place forming an airtight joint between it and the joint for the purpose described, the bottoni ot the cup having a bracket Yformed integrally therewith by which it may be secured to the axle of a veu hicle, said bracket having;- a downwardly eK- tending flange surrounding the valve to protect it.

13. .11n air cushion comprising` a metallic cylinder havingone end closed air-tight and the other end provided with a screw thread on its rim and an inwardly extending flange forming an annular channel between it and the rim, an elastic` comparatively shallow dome-shaped cup thicli enough to malte it self-supporting, adapted to have its body inverted into the cylinder and having an enlarged' rim fitting into the annular channel, a. gasket nut screwed `on to the cylinder to press the rim into the channel to malte an air-tight joint under high pressure and prevent it being pulled out by said pressure, a plunger materially less in diameter than the diameter ot the cup cooperating therewith, and an inflation valve connect-ed to the 1ne tallic cup.

14. An air cushion comprising a metallic cylinder having one end closed air-tight and the other end provided with afthread on its rim and a flange extending inwardly or1ning an annular channel between it and the rim, an elastic cup adapted to have its body forced into the cylinder and having an enlarged rim litting into and entirely fillingr the annular channel and. above it an annular surface, a metallic washer resting on said surface, a `jaslet nut Screwed on to the rim and engaging' the upper surface of the washer tor the purpose described, and an inflation valve for the cylinder.

ln a shock absorber -tor vehicle-s, the combination with a support adapted to be secured to a chassis, ot an opposed support adapted to be secured to a body, a rigid nietallic cup secured lo and projecting' troni one support and having' an edge o'.l its rim threaded and provided below said threaded edge with a flange extending; inwardly, a rubber cup` having vits sott enlarged rim shaped to fit snugly into and entirely fill the annular recess formed between the 'flange and the adjacent wall `oli the cup, and having` an external annular A[lange surface, a gasket nut threaded into the top et' themetallic cup and havinpj its bottoni adapted to compress the sott rubber rim into the annular recess to make an air-tight joint, connee tions between the supports to permit them to be moved toward and from each other within certain limits, an inflation valve connected to the metallic cup, and a plunger carried by the other support and cooperatingr with the top ot the rubber cup, substantially as and for the purpose described.

16. 1n a device of the class described, the combination with an air-tight metallic cup closed at the bottom, said cup being provided at its top with an annular seat, of a flexible placebetween the cup and ring, forming an air-tight joint for the purpose described, and an inflation valve secured in a Wall of the Cup whereby the pressure therein may be 15 directly controlled.

In Witness whereof, l have hereunto set, iny hand and affixed my seal, this 26th day of February, A. D. 1921.

EDWARD J. GLACKN. [Ls] JOHN HGWARD MCELROY.

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