US1033010A - Manufacture of pneumatic cushioning devices for the elastic suspension of road-vehicles. - Google Patents

Description

` .TNG DE'VCES FR THELASTIC SUSEENSION Y RL'EHCLES.

il Jisri Sreciceiiw @f *im ftent Eet-ente@ @lluly 16, 1912. Application filed. Enne U, 3.911. Serial No. 634.-,163. A y@ L/2 @LC/omit may concern.' i covered structure then vuloaiiizing the. 55 "le it known that l, Lnoimnn llmmis, a' whole, afterward removing die structure H t of the King of Great Britain, refrom Said mold, and finally removing thefg in London, England, hnreinvented sind core iroin 'the seid flexible and non-eX-f` n new and useful linproveinenls in the nniiectnre or Construction of Pneumatic @.snioning levioes for tlie Elastic Suspenn of londTeliioles, and ol which the i'oliq specification,

lieve. bei 'proposed to employ 'Vo ousliiorf: which were lo m vile nand inerte nd olorio, o 'oler forni, ini, and around l1 openings l. tlie annular tlieeesing 'to be lint op on at i 1 l N 1 x 1 I p itn ineens loy winch xt ooulo be 20 en Willi upper end lower cup-like scoured to the re to be ii'isnleted fro Vibration. oli pnenniuiio mieli vices were fitted with a valve by e inflated, or contained india rubber, fitted respect-ire parts in one enotner 5111 if. ling which they could o :in inner e listie cese of will. n. faire Wliieliextended lo the exterior.

Reference is Inode my specification "rining part of United States Patent No. 32.833, dated Fel). 28. 19057 for ntiyibraion pneumatic cushion.

The present invention Consists in 'tlie method or 'process by which a flexible and non-extensible easing for the purposes above ennnier:ited7 is inginnfnctured, as heroine-.iter particularly described and claimed.

According to this invention the approximately spherical casing aforesaid is o m4 poseo of an inner lining oi siiiyfo nmterial, suoli as india rubber, zr "Winding of slring tliereon Coated With indie rubber or time like, and en exterior, tliiolmess of indizi rubber or the like having ribs around 'the annular edges of tlie two diometrioally opposite openings, all vulcanized together.

The process of manufacture of theonsing according to tliis invention consists in applying n cover L suitable thin lining mete# rial, suoli as india rubbeiyeround 4a core; thenivinding a length of string having :L yulcnniznblo adhesive coating Ao indie rulif ber vor the like over suoli cover, then placing the structure in n mold, tlieninsertinfr iodio rubber to fill such mold around suo, i

tensible Casino. y "lrie torni string is intended to include-60 oord, eine, Wire or the like, of any. suitableff materiel9 suoli es sillr7 cotton, line`r1,"heinp, i metal or equivalent substances. n lv l ion is' hereinafter more vfullyufA 65 The invent scribed with reference'to 'the accompanygv i in Whichl is a. sectional ele'vation'of a. c .im .n which the string is Wound in the forni r. lielir; around the core romtop to bottoni thereof or yiceyersa; l Fig. 2 is plan of the lower portion o ing the coro in position a ing in section, YFig. 3 method of winding the string upon the core. Fig. l is fr section through a molded casingL 7'5- and a core, constructed to enable the to lie 'wound in n longitudinal direotiohl over D tile seid core. Upon a suitable sectional core l suoli as' is i shown in i2 and ll, there isfapplied e y80 @fr r 2 oit' tliin materiale-sayindie. rubber suitable to form the lining of the oasingin'd i upon 'this cover is Wound the string 3. This 4 string which is in a continuous length, may" oe Wound, as shown in Figs. 1 and 2,'-i1i' e185 helical direction around the' core, or ias: l sliorfn in Fig. 3 it may be Wound around the core et :in angle to its axis,`and when the' in Y @ore lios neen suiliciently covered by Windin'gf I Tf* the string in one' direction, the direction of 90 Winding isflien changed so"'that the string lest 'applied' crosses that `previously Wound" non core, sind orrns'a cross Winding 21's shown'.A Theloore l being tlius preparedfit is placed within tlie moldjll endndia' or like vulcanizeble body mteriel 5 Irrolded'y in 'to the string surrounding the l'said Core to ille shape oi` the interior ofthe mold, 'the said body material becoming incorporated with the string 39 so that the string becomesv 100 integral with 'the vloody material .and'is Wil--l f. eenizedtlierewitli as Well as tothelining; The core l is Constr noted in any oonyenen or Well known manner so that vWhen 'die casing is removed from the mold, the center 105 torr example o llie' core can be first ref moved, after which its other sectional parts' een oe Withdrawn through theeperture etV either end of the casing previously oecul pied by the center of said core. l

Fig. -l Ishows a form ot eore adapted for t the winding' ot' the string; in a efmtinnous l length in a longitudinal direction. For this purpose there is provided a hollow central member 7, around which are assembled the sections S completing the core. lVhen the core, excepting its axis f), has been assemf bled and lthe lining- 2 placed thereover. the] continuons string 3 1s wound so to extend in a longiti'uilinal direction thereon, the string, after passing over the lining,` upon the outside of the core, being threaded through the hollow member 7, again passed over the lining upon the. outside ol the core, and so on until sufficient string is employed to form the desired reinforcement.' The eore having thus been prepared, the axis 9 is passed through the. hollow member 7, and the core placed in the mold described with reference to Fig. 2. Alfter the molded casing 2, 3, 5, Fig. t, together' with the mold core 7 is removed from the mold and the axisy Q withdrawn, the string 3 is cut at the points Where,it enters the hollow core at each end thereof, so that the hollow member 7 i of the said core can be removed from the renter of, the casino and the core sections 8 withdrawn throngL the aperture at either end of the said casing, the casing then hemg ready for use.

For the purpose ot strengthening the annular ribs or headings 1.0 formed at. the ups per and lo'weijends of the said casing, and t0 prevent: the wear of the said beads c011- sequentupon any slight friction which might be cause between the beads and the cuplile members by which the casing is retained in position on the vehicle, a layer ot canvas or the likev can be applied on the eX- ternal surface otl the said upper and lower beads.

In order that tbe string', when applied to the core in the desired manner, shall be retained in position thereonuntil the india rubber 1s molded to complete the easing', the

said string' is ineteralny treated by coating it with an` india rubber or lilo. rulcanizable adhesive solution, prior to, or during the Winding thereof on to the core, or the core covering or casino' lining' 2 may be. treated with india rubber or like .solution before the windingl process.

The term india rubber7 as hereinafter employed is intended to include altermu, tively other like Vulcanizable material as mentioned in the tfn'enoing." description.

l/Vhat l claim as mi' inrention and desire to secure by patent is:

l. The within dtsrrila'tt process ot' manufacturing a tlexible and practically non'eze tensible easing;1 otI appioiimately spherical form, having two diainetrically opposite openings at the top and bottom7 and having ribs around thesannular edges of such openings adapted to engage upper and `lower cup-lile members, said casing being for use in pneumatic cushioning devices to be located between the wheel axles and the bodies of read vehicles: said process consisting .in amilyine' a thin lining tor the casing of in dia rubber around a suitable core, then winding' a length ol strain-resisting string over such lining' and simultaneously attaching; the same thereto by an adhesive coating of india rubber, then placing the structure in a mold, then filling' such mold with india rubber For an outer thickness including said ribs around said string-covered structure, then vuleanizing' the casing as a whole, afterward removing the structure from the mold. and tlnally removing` the core from the flexible and noneext'ensible casing.

In the process ofmannfacturing a. tlexible and practically non-extensible casing ot approximately spherical form, having' two diametrically opposite openings attop and bottom, and having ribs around the annular edges of such openings adapted to en? gage upper and. lower cup-like members, said easing being for use in pneumatic cushioning devices to belocated between the wheel axles and the bodies ot' road `rel1ieles; the method ot' introducing a continuons reinforcing string consisting' in applying' a thin lining` tor the casing around a .suitable core, and then winding' a continuous length of string coated with adhesive india rubber over such lining before Afilling the mold with the india rubber for the outer thickness of the easingi nclnding said ribs, the whole beim;` adapted to be lvulcanized at one operation, whereby said string is made substantially integral with said outer thickness 0l. the india rubber.

l. The. within described process of mame :factoring a flexible and practicallynon-extensible casingd et' approximately spherical torni having' two diametrically opposite openings at top and bottom and having ribs around the annular edges ot' such openings adapted to engage upper and lower cup-like members, said casing being for use in pneumatic cushioning devices to be located between the wheel' axles and the bodies ot' road vehicles; said process consist-ing inapplying a thin liningfor the casing, of indiarub-l ber, around a core having separable sections assembled around a hollow central member, then winding a length 'of stringfupon said lining, said string missing through said hollow central member and over the exterior of ,said lining, then placing a spindle through said hollow member of the said st1ing-covered structure into a said core and placing mold, then inserting india rubber for the the casing `into said mold string-covered structure, india rubber as 'a outer thickness 0f and around said then vulcamzlng the Vuole, then removing the structure from the, mold, fhen cutting the String around said wponings, und finally removing the Core from the Hexble and non-extensible casino'. f5 The foregoing specification of my mprmemen'ts in 'he mzmu'act-m'e or construcnn'n pneunmc cus 'mmHg-devices :for the LEONARD HRR S.

Witnessejsz y H. C. Com, R. Tmmo.

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