US1179077A - Machine for forming rubber tubes and the like. - Google Patents

Description

E. 8. CURRENT. V MACHINE FOR FORMING RUBBER TUBES AND THE LIKE.

APPLICATION FILED APR. 15. 1914. I 1,179,077;

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L we mm w Mr G Am d r v E. 8. CURRENT.

MACHINE FOR FORMING RUBBER TUBES AND THE LIKE.

APPLICATION FILED APR. l5. l9l4.

1 179,077 Patented Apr. 11,1916.

4 SHEETSSHEET 2.

" vwentoz 3&1

E. 3. CURRENT. MACHINE FOR'FORMING RUBBERJUBES AND THE LIKE. 7

'APPLICATION FILED APR. l5 19M.

Pqtented 'Apr, 11-, 19 16;

4 SHEETSSHEET 3.

lllr. XIPIHVWIIYIIILIIIWJ a .3 F 1 I S a a m is E .8 hf 3 C mm em o o N ra Q a: *3 i 3 'E.' s. cunmam, MACHINE FOR FORMING RUBBER TUBES AND THE LIKE. 7 1,179,077.

' APPLICATION FILED APR. 15, 19H.

5 Patented Apr. 11, 1916.

4 SHEETSSHEET 4.

avwen tpz I v v gu rgnt v 1 To, all/whom it may concern:

NIT

MACHINE FOR FoRMiitG'RUBBER TUBES AND THE L nn.

My invention relates to improvements in machines for forming rubber tubes and the like and theobjects of the present invention are. first, to provide a semi-automatic ma chine whereby the unvu'lcanized rubber is rolled upon a mandrel, second, to provide a means whereby the mandrel together with the rubber rolled-upon the mandrel is de-' liver-ed to what might be termed a receiving trouglnand third,1to generally improve machines ot' the type to which this invention belongs. These objects, together with other objects. readily apparent to thoseskilled in the art. I attain bythe construction illus: trated' in the accompanying drawings, although my invention 'may be embodiedin a varietyof other mechanical forms, the con strnction illustrated being chosen by way'of example. y I In the accompanying drawingsFigure 1 is an end View of what might be termed the front or feeding end'of the machine. 2 is an end viewof the/delivery end of the machine. Fig. 3 isa topview, showing the mandrel rolling head and presser head moved, into position to roll 'the material upon'the table. F ig. 4 is a side elevation showing the presser head and mandrel rolling head in the position illustrated in Fig. 3.

Fig 5 is a diagrammatic view showing the presser and rolling head and its-tracks and the pos tion of the trip plates during the.

- time the rolling :and presser head is moved toward the left hand end of the figure.

Fig. 6 is; a similar view showing the rolling and presser head movingin the opposite directionJ Fig. '7 is-a view showingaportion of one ofthe side channel bar tracks or ways and illustrating the trip plates in their u-ormal pos tions; Fig. 8 is a View showing a portion of the mandrel rolling and presser.

head orplateshowing aportion of the cross base and one of the sliding blocks. I is a (lQfZlChQtl View of one of the heads designed for engagement with one'of the mandrel 'pressingand rolling head actuating screw threaded shafts.

sTATEs PATENT OFFICE. f

Specification of Letters Bate lit. v Application filed April 15, 1914. Serial No. 8231,9505.

side members 3 forming, I

'ing housings are provided webmaster.

Fig. 9

ELMER s. CURRENT, 0F BEECH our, oH Io.

Patented'Apr. 11, 1916 I I v v t E Similar numerals of reference indicate corresponding parts mall the figures of the drawings. y In the accompanying drawings, 1 repre sents the base orlegs upon which is mounted and connected the frame 2; the legs and-1 frame constituting what mightbe termed the base or support. of the machine. proper, and'is a. rectangular. structure formed oi suificient strength and rigidity to carry the variousiparts both stationary and movable and to hold said partsin proper relation;

ship with reference to. each other. The constructionof the frame properdioes not have to do particularly with thef inveIrtion,except that a suitable fraine mustfbe; constructed such as common in machinesof. the type to which this belongs. I The lower;

part of the frame are grooved upon their top or .upper'ed ge' i fi 'thegroove being preferably V -shaped:,.; l cross section,- such as '4.. The groovedabars,

3 are for the purpose of supporting. and carry ng the movlng ouslngs'oywlnch mov -g callysliding heads or 'members 6 .to whio 5 are connected in any convenient and well known manner theflcross bar7,'and to which cross bar is atta'ched'the mandrel 'rolling'anidi pressure plate8, whiehpressure plate ishegld againstrocking or tilting movementgbygos means of the brace ba'rs Q or their equiya lents. said brace bars being connected tov the mandrel pressing roll plate 8 I To the frame 2 areconnected in anyfco venient and well known manner the channel} at bars 10, said channelbais beingprovided, with upper and lower tread. flanges 11 and 912, To the cross bar 7 or its equivalent are.

attached the downward extending bars and to the bottom or lower ends of the bars 13 are pii'otally attached the short bars. which short bars carry the journaled traye ing rollers 15, said rollers being for the pur pose of supporting the. vertical movablej o mandrel pressure and rolling head madeup ofthe cross bar 7, the pressure plate 8 ant the brace bars 9, together with theisliding; heads or blocksfi. To the" end members of.

the frame are journaled two screw threaded 9 or. 1

shafts 16,, which are formed of a. length to correspond substantially with the length of; the frameproper and are for thepurposfep of imparting a reciprocating 'mov'e'ment to 1 the ea ie 5? ea er w j e fi nt 9 parts connected to and carried by said housings.

For the purpose of im 'iarting rotary movement to the screw threaded shafts It) the cross shaft 17 is proyided, which cross 1 shaft is the power shaft or the main driving shaft and is provided .vlithjpthe tight and loose pulleys 1S and '19, thepulley 15) being a tight pulley and the pulleys 18 loose ones, and for the purpose of reversing the motion of the screw threaded shafts 16 the ordinary open and closed belts 20 and 21 are provided, which belts communicate with any source of power. The construction so far as theopen and closed belts and the tight and loose pulleys are concerned is common and well known and need no detailed description.

The cross or power shaft 17 is provided with the worm gears 22, which worm gears mesh with the gear wheels 23 and the gear wheels 2% mesh with the'gear wheels which gear wheels are connected to the screw threaded shafts 1G. I have illustrated in what might be termed a conventional way the gearing for imparting rotary motion to the screw threaded shafts 16, but the specific gearing is immaterial, except that the gear mg must be such as to rotate the screw threaded shafts in unison, and. in the same direction at the same time. For the purpose of imparting a reciprocating movement to the housings 5. said housings are provided with the blocksor'heads 26, the, inner ends or edges of said blocks being provided with I screw threaded semi-circular grooves 27, the

pitch of the grooves corresponding with the pitch of the screw threads upon the shaft 16.

For the purpose of bringing about the proper adjustment for the blocks 26 with reference to each other, the blocks are provided with the flanges 28, said flanges being provided with the recesses 29 and the flanges 28 adjustably connected to the'housings 5 .by means of suitable lug bolts 00 or their equivalents. It will be understood that by the rotation of the screw threaded shafts 16 and by reason of the blocks 26 and the screw threaded grooves 27 movement will be imparted to the housings '5; the direction'of movement-being governed by the direction of rotation of the screw threaded shafts '16.

In the manufacture of tubes by the use of my present invention a metallicmandrel such as 81 is used, which mandrel is of'a" length to correspond with the length'of'the tube and owing to the fact that the-tubes must be formed'of a length suliicient to produce the inner tube of a tire, the full length must necessarily be about ten or twelve feet long, reference of course. being had to the diameter ot a wheel, upon which a completed tire is to be placed. Upon this long metallic mandrel is first rolled a sheet or sheets of unvulcanized rubber, and it is with presserplate R togetli'e I parts is moved inithe opposite direction or during its backwarilmovement it shoiild be 5 i i 126 the mandrel that this invention hasto do.

- To the frame proper is attached a table 32, which table is formed of a width equal to about one-thiri'l of the length of the machine proper. The table 31 is preferably coverml avith cloth as indicz'ited by the nuincral Q32, and upoii this cloth covering is placed the. unvulcanized rubber designed to be wound upon the mandrel, the initiative arrangement of the mandrel and the unvul canized sheet of'rubber being illustrated in Fig. 3', in which ligure is illustrated the po sition of the movable pressure or rolling plate H. together with the different parts, such as the housings and the parts carried by said housings.

it is well understood by those skilled in the art. that unvnlcanized rubber will more readily adhc e to a metallic surface than it will to a. fibrous surface, hence the necessity of covering the table 32 with the fibrous cover 32.

The operation of then'iachine is substantially as follows: Assuming that the inandrel, the sheet of rubber and the rolling and pressing plate are in the positions shown in Fig. l, rotary motion is imparted to the screw threaded shafts 16 and in the direction to move the pressure plate 8 over the table. -ln order that as the rolling and pressure plate 8 may be brought down upon the mandrel during the time the unvulcanized rubber is. being placed upon the mandrel the channel bars are each provided with the inclines 34 and upon which inclines the traveling rollers 15 move upon, thereby allowing the presser plate 8 together with I the movable parts connected to said presser lower tread flange 12 during the time the presser plate is upon the mandrel. other wise the weight. f: fly) resser plate would. be ren'iovedfrom the n'i-and'rel. and in order to providefor-this condition the arms 13 should be formed of such a length that the traveling wheel'sd'fi will be spaced a short distance frdm'the nppcifaces of the lower tread flanges ashest illustrated in Fig. (3.

'It will be 'uiulerstoodl"that when 'tliw with its different elevated so that there could be no possibility" of imparting a bacluardntolling movement to the mandrel and in,drd'er to provide means for thus elevating the head. the hinged tread sections 35 are provided and as the traveling wheels 15 move under said 1 frame, a mandrel adapted to roll upon said table, tracks or ways carried by the frame, housings movably mounted upon the tracks or ways, means for imparting reciprocating movement to said housings, a pressure plate adjustably connected to and carried by the housings, downward extending barsycarried by the pressure plate, said downward extending bars provided at their lower ends with rollers, channel bars fixed to the frame, said channel bars provided with spaced up per and lower tread flanges, hinged plates connected to the upper tread flanges of the channel bars and inclined flanges located between the upper and lower flanges of the channel bars.

2. In a machine of the class described, the combination of a frame, a table fixed to the frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for imparting reciprocating movement to the housings, a pressure plate carried by the housings and adapted for vertical movement with reference to the housings, and means for imparting vertical movement during the reciprocating movements of the housings.

In a machine of the class described, the combination of a frame, a table fixed to and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for moving said housings upon said tracks or ways, a pressure plate carried by the housings and adapted to rest upon the mandrel, said pressure plate connected to vertically movable guide blocks, said pressure plate mounted upon'traveling rollers, upper and lower spaced tread flanges adapted to support said traveling rollers and the pressure plate and means for shifting the tread of the rollers from the upper to the lower tread flanges.

4. In a machine of the class described, the combination of a frame, a table fixed to and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for moving said housings upon said tracks or ways, a pressure plate carried by the housings and adapted to rest upon the mandrel, said pressure plate connected to vertically movable guide blocks, said pressure plate mounted upon traveling rollers, upper and lower spaced tread flanges adapted to support said traveling rollers and the pressure plate, and means for shifting the tread of the rollers from the lower-to the uppertr'ead flanges.

5. In a machine of the class described, the combination of a frame, a table fixed to and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to supportsaid housings, means for moving said housings upon said mandrel, said pressure plate connected to vertically movable guide blocks, said pressure late mounted u )on travelin rollers upper and lower spaced tread flanges adapted to support said traveling rollers and the prcssln'e plate, means for shifting the tread of the rollers from the lower to the upper tread flanges, and a series of spaced bars adapted to receive the mandrel.

6. In a machine of the class described, the combination of a frame,a table lixedto and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for moving said housings upon said tracks or ways in opposite. directions, a pressure plate carried by the housings and adapted when in a lowered position to rest upon the mandrel, said. pressure plate connected'to vertically movable guide blocks, said pressure plate mounted upon traveling rollers, upper and lower spaced tread flanges adapted to support said traveling rollers, and the pressure plate, means for shifting the rollers and the pressure plate vertically,ase ries of inclined spaced bars adapted to carry the mandrel.

7. In a machine of the class described, the combination of a frame, a table fixed to and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for moving said housings upon said tracks or ways in opposite directions, a pressure plate carried by the housings and adapted when in a lowered position to rest upon the mandrel, said pressure plate con nected to vertically movable guide blocks, said pressure plate mounted upon traveling rollers, upper and lower spaced tread flanges adapted to support said traveling rollers, and the pressure plate, means for shifting the rollers and the pressure plate vertically, a series of inclined, spaced bars adapted to carry the mandrel, the lower ends of said spaced bars provided with trough shaped portions.

8. In a machine of the class described, the

combination of a frame, a. table fixed to and carried by said frame, a mandrel adapted to roll upon said table, housings, tracks or ways adapted to support said housings, means for moving said housings upon said tracks or ways in opposite directions, a. pressure plate carried by the housings and adapted when in'a lowered position to rest upon the mandrel, said pressure plate connected to vertically movable guide blocks,

a series of inclined spacedbars adapted to carry themandrel, the lower ends of said spaced bars provided with trough shaped portions, and a stop, bar adapted for contact Withthe mandrel.

9. In a machine of the class described,

, the combination of a frame, a table fixed to the frame, a mandrel adapted. to roll upon the table, housings, tracks or Ways adapted to support said housings, means for moving and guidlng said housings, a pressure plate carried by the housings and adapted for contact Withthe mandrel and means for moving said pressure plate to and from the mandrel. 10. In a machine of the class described,

the combination of a frame, a table fixed to the frame, a mandrel adapted to roll upon the table, housings, tracksor Ways adapted to support said housings, means for moving and guiding said housings, a pressure plate carried by the housings and adapted for com;

tact with the mandrel, and means for alu W ips.

a) support said housings, means ternately from the mandrel.

11. In a machine of the class. described,-

moving said pressure plate to 'and the combination of a, frame, a table'fixe'd to the frame, a mandrel adapted to roll upon the table, housings, tracks or ways adapted 'or moving and guiding said housings a pressure plate carried by the housings an adapted for con= tact with the mandrel and means for mow ing said ressure plate to and froi the man, drel, and inclined bars extended rem-the table and adapted to receive the andrel, and means for holding the mandrel upon said inclined bars.

In testimony that 1 claim the above, i

have hereunto subscribed my name-1n the presence of two witnesses. I

, ELMER S. CURB NT.

Witnesses:

SYLVA Boizon, F. W. Bonn.

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