US1406722A - brown - Google Patents

Description

H. M. BROWN. MACHINE FOR MAKING `BOTTLES, ETC.

APPLICATION FILED MAR. I8. I9I8- Patented Feb. 14, 1922.

l sus s- HE 4 l f @E 05 O :2 21

E@ Wgf H. M. BROWN.

MAcHlNE FOR MAKING BOTTLES, ETC.

APPLICATION FILED MAR. I8, 1918. l 14,

2 SHEETS-SHEET 2.

INVENTOR,

molmfis.

UNITED STATES PATENT OFFCE.

HARRY M. BROWN, OF BROOKLYN, NEW YORK, ASSIGNOR TO SPRING STOPPER COMPANY, OF BROOKLYN, NEW' YORK, A CORPORATION OF DELAWARE.

MACHINE FOR MAKING BOTTLES, ETC.

Application filed March 18, 1918.

To all whom t may concern y Be it known that I, Hanny M. BnowN, a citizen ot the Unit-ed States, residing at Brooklyn, in the county oit Kings and State ot' New York, have invented a new and usetui Improvement in a Machine tor Making Bottles, etc., ot which the following is a speeication.

This invention relates particularly to machines tor making bottles, or similar containers, vwhich are provided within the mouthportion with an internal screw thread; and the primary object ot the invention is to provide an improved machine for making bottles, or the like, which, while having large capacity, is capable of providing the mouth ot the bottle with an internal thread simultaneously with the formation ot the neclcportion and mouth of the bottle.

The invention is illustrated, in its preterred embodiment, in the accompanying` drawings, in which- Fig. l represents a broken plan view ot a bottle-making machine constructed in accordance with the invention; Fig. 2, a broken elevational view, partly in section, ot the same; Fig. 3, an enlarged broken elevational view, partly in section, taken approximately as indicated at line 3 ot F ig. l; Fig. il., broken sectional view taken as indicated at line 4 of Fig. l; and Fig. 5, a broken tional view showing the mouth-portion ot a bottle formed 'by the improved machine, itted with an externally-threaded glass stopper.

It may be stated, generally, with reference to the machine illustrated, that it comprises an intermittently-actuated rotatable table having mounted thereon a ci rcumterenti allyarranged series of' molds; means for automatically closing the molds and for automatically opening them again aiter the torming and blowing operations have been performed; and a mandrel corresponding with each mold having threaded connection with the table which carries it, and provided with an extremity which co-operates with the mold and' has a thread corresponding in pitch with the threaded connection between the mandrel and the table which carries it; means for forcing the glass into the mold at the glass-charging station; means `for torcing air into the mold at the blowing station; and local mechanisms for turning the mandrels, seriatim, to elevate them to the mold- Spectcation of Letters Patent.

Patented Feb. 14:, 1922.

Serial No. 223,090.

ing position at the molding station, and 'lor turning the mandrels in the opposite direction to withdraw them at the blowins.y sta-- tion. A

intermittently-actuated rotatable tables equipped with molds and means for opening and closing the molds are well-known in the art ot bottle-making machines; hence` it is unnecessary to show and describe the/same with. great detail. The accompanying drawings will suiiice to enable the presenty invention to be iully understood by those skilled in the art. l

In the construction illustrated` A represents a base which supports a central column, or standard, A', B, an intermittently-actu# ated rotary table mounted on the column A m the usual manner and caused to rotate, in a step-by-step manner, in the usual way, by any well-known mechanism (not shown.) C, C, a oircularlyarranged series ot molds mounted on the table B; C, a mold baseplate associated with each mold and which is rigidly secured to the table near its circumferential edge, the switching sections ot the mold being pivotally connected together and mounted on said base-plate, and also having interlocking connection with the base-plate when the mold-sections are closed D, a man drel associated with each mold and carried by the intermittently-actuated rotary table, each mandrel being equipped with an actuating gear D D2, a mounting for each mandrel irmly secured to the rotary table; E, local mechanism located at the glass-charging` station. and adapted to engage the gears D@ seriatim, when they reach the glass-charging station, whereby each mandrel is, in turn, elevated to the molding position; F, local mechanism located at the blowing station and adapted to engage each gear D', seriatim, when it reaches the blowing station, whereby the mandrels are, in turn, lowered, thus enabling air-pressure to be admitted through the bottleneck; and Gr, a motor serving to communicate motion, through shafts G and G2, to the gear mechanisms E and F", in such a manner that they will rotate in opposite directions.

The construction ot the trame, which comprises the base A and column A', need not be described in detail, as the same is well understood. It may be stated, however, that the column A has ya reduced portion A2 which extends through the rotary table B fio EIR

and carries a stationary cam A3 which serves to close the sectionally-constructed molds. rlhere is, also, a stationary cam [3:1, shown brolrenly in Fig. 1, which serves to open the molds after the blowing operation is performed. These cams serve, in a well-known manner, to actuate the radially-movinoslides C2, which are oined, by connections C, to the mold-sections, whereby the mold-sec tions will loe automatically 'closed before theyV reach the glass-charging station, and will be automatically opened after they pass the glass-blowing station. V

Each mold C comprises, in addition `to the base-plate C', a pair ot vertical sections 1 and 2 having pivot-lugs connected with a Vertical pivot 3 mounted on the bach-portion of' the base-plate C. These mold-sections are equipped with lateral ctuating arms 4l which are joined by tie connections C3 to the radiallyemovable slides C2, in a welllnown manner. The lower ends of the mold-sections 1 and 2 are adapted to swing over 'the mold-plate C; and the mold-plate is provided with a raised central portion .equipped with an annular llange o whichy is received in semi-annular recesses with which the base-portions o the .mold-sections 1 and 2 are provided.

The mold-sections 1 and2 are provider- Vjust above the raised central portion of the moldeplate o with complemental annular recesses G, which afford a chamber adapted to accommodate the separable sections l oi a pair of tongs, the sections 'l having an internal contour correspondinp,` with the ei;- ternal contour of the bottle-mouth. ln Figs. 3 and Ll, 8 represents the bottle in the process oi formation. The sections 7 which comprise the head ot' the tongs are carried by arms, or handles, 7, which may extend through the recesses, or openings, l, with which the mold-sections 1 aint?J are provided, as shown in Fig. 2. 'lhe tongs vare introduced before the inoldsections l. and 2 are closed, the mold-plates C seine' ecuiipned with blocks, or supports, 9, which provided in their upper surfaces with recesses 1() adapted to receive the handles ol the tongs, in the usual marmer. Each moldplate C further provided with a radial perforation 11, which leads to a central forming operation, and serre afterv-Jards as a means for removing,` the bottle from. the mold.

Each mandrel D comprises a spindle which has its upper end provided with a screw thread 19 and which ens its lower liana end Yprovided with a thread 1.2a ot the same pitch.' The gear D, in the illustration given, is iiredly secured to the spindle. The mounting` D2 for the spindle, or mandrel, comprises a plate 13 which is firmly secured to the table B, depending posts 13a :firmly secured to the plate 13, and a crossbar 13" lixedly secured to the lower end of the posts 13a. The plate 13 has on its upper surface central boss 13C, Vwhich tits snugly into an opening' with which the table B is ijnfoyided near its circumference, and extends into corresponding central opening of the mold-plate C', which constitutes a downward extension of the chamber 11a, and thus the plate 18 is properly centered with relation 'to the mold-plate. The mandrel l) ournaled to turn in the bearing atlorded by the central portion ot the plate 13. In eacl'i case, the lower end oi the mandrel. l) has threaded, connection with the'cross-bar 13"', that is, the thread 12L of each mandrel works in a corresponding` thread 12b (Fig-2) with which the central portion oit the crossbar 153 is provided. Each gear D is equipped on its lower side with a pin, orstud, 1l, which depeinls trom it and is adapted to engage a stud 14 carried by the cross-bar 13b; whereby the rotation oit the mandrel will be arrested when theV mandrel is sufd ciently withdrawn from the mold; and each rfear D is 'further equipped on its upper side with a stud 15, which engages a stud 15y dependingv t'rom the plate 13, whereby the right-hand rotation of the mandrel will he arrested aiter the mandrel Vreaches the molding position. ln each case, the gear D located between the plate 13 andthe crossbar 13b carried by the depending studs 13a. ln effect, the mandrel, in each case, has screwinections with the revoluble mold-carryii table B. 'lhe plate 13 is secured to the talile by means of bolts 16, which serve also to iirinly secure the mold plate C to the table. Y

'lhe nieclmnisin E, in the preferred construe on, oomprises a constantly rotatiiz.; spindle 17' a gear 17 journaled thereon; and a friction-clutch device 1lb adapted to peri'nit slimiapge ot the spindle 17 with re lation to the A@gear 17 when the stud, or stop, 15 engages the correspondingstop, 15a, after U l the mandrel has been elevated to the moldin position. The `gear 17a, Viewed from below, rotates counter-clockwise, so that each 1r l, when brought into engagement therewith, willV be rotated clockwise to cause the mandrel to be elevated.

The gear mechanism F comprises a constantly rotatingn vertical shaft 18; a gear 18 journaled on the upper end thereof; and :i trictioirclutch device 18" adapted to perinit slippage alter the mandrel has been withdrawn 'from the molding' position. The

135% wise, so that each gear D when it arrives the blowing` station, will be rotated viewed from below, rotates clock- Y roo rountercloekwise, thus lowering the mandrel to the inoperative position. T he friction-clutch device 18b comprises a frictiondisk 19 encircling the upper portion of the shaft 18 and received in a recess in the upper surface of the gear 18, a sui-mounting metal disk, or collar, 19, splined on the upper end of the shaft 18, a leaf-spring, or resilient yoke, 19h, provided with a central perforation and havingits extremities bear ino; on the disk 192; and an adjusting screw 19c connecting the central portion of the spring` with the upper end of the shaft 18. By this means proper tension may be placed upon the parts to cause the gear 18"L to perform its function of rotating` the mandrel. The friction device 17h of the gear mechanism is of similar construction. Each of the shafts 17 and 18 is equipped with a collar 20, upon which the friction-actuated gear is supported.

The shafts 1.7 and 18 are journaled in sta tionary brackets 21, which may be suitably supported on the frame of the machine. In the illustration 2ejiven, the shafts 1.7 and 18 are equipped at their lower ends with bevel pinions which mesh with pinions on the connecting horizontal shaft G2. The motor shaft G is equipped with a bevel pinion which meshes with the bevel pinion on the lower end of the shaft 1'?. By this arrangement, the friction-actuated gear 17a rotates in one direction, and the friction-actuated `gear 18n operates in the opposite di rection. Thus, each of the mandrels D will be rotated clockwise and elevated when its rgear D reaches the glass-charging station,

and will be rotated counter-clockwise and withdrawn when the gear D reaches the blowing station.

The machine is equipped, in the usual manner, with a blow-head H (Fig. 2), which may be brought down onto the upper eno of a mold after the charge of glass has been introduced into the mold. Thus, hy admittingv air pressure the glass, in its molten or plastic state, will. be forced into the bottom of the mold and will have its neck and head shaped and the internal Screw-thread formed, this operation being' performed at the glasshargingj station while the table B remains stationary.

The machine is further equipped with a `moldcap l (Fig. 2), located at the blowing station. This cap is adapted to be lowered on to the upper ends of the mold-sections 1 and 2, and suitably socketed, as indicated by dotted lines at 22, to lock the mold-sections in closed position.` The mold-cap l, also. is suitably formed to give the exterior finish lto the bottom. of the bottle. 7hile the mold-cap I is forcibly held upon the top of the sections 1 and 2 of the mold, the blowing operation .is performed, it being understood that the mandrel D is at this time retracted, as shown in Fig. P. At this station, the air-conduit 11 of the moldplate (l comes into registration with a blow-head J (Fig. l), .vhifh is held by the usual means (not shown) against the projecting portion of the mold-plate, while the table B is at The air passes through the chamber 11a into the mouth-portion of the bottle, and forces the glass to coni'orm to the interior configuration of the mold, as will be understood from F lifter this operation, the mold is carried by the table to the point where the bottle is to be removed, the cam A4 serving to automatically open the mold. The bottle may then be transferred to a finishing; machine provided with molds of larger internal contour, where the blowing;- operation is finished, in which operation the glass is reduced to the desired thickness. It is common in this class of machines to construct a single machine with a finishing` table as well as a molding table. -This Yterms no part of the present invention, and is not illustrated.

From the description given, the oiLicration will be readily understood. 4The revoluble table B is intermittently actuated, and the molds mounted on the table are so spaced that one mold wiil be located at the lglasscharging station while the mold in advance thereof will be located at the blowing;` station. The table carries the moles in an an nular path, and with each mold carries a mandrel which has a threaded upper end and a correspondingly threaded shank having screw-connection with the table, or a member carried by the table. The molds are closed, in turn, before they reach thev l.elasscharging station. vWhen a mold reaches this station, the `gear D of its mandrel comes into mesh with the frictionallyactuated rotating `gear 11 which turns the mandred rightehandedly and elevates it, thus brin ging' the threaded upper end of the mandrel to the molding position. A charge of glass is introduced into the mold, the blow-head H is lowered upon the mold, and the charge of `glass in the mold is subjected to aiiepressure to force the ,Q -lass to ill the lower portion of he mold and mold the neck-portion of the bottle and give the interior finish to the bottle-mouth. Y rl`he blowhead H is then elevated, and the table is advaiucd another step, carrying the charged mold to the blowing station, at `which sta-- tion the gear D of the mandrel comes into mesh with the rotating;` frictionally-actuated gear 18, which operates to turn the mandrel counter-clockwise and lower it. The moldcap I is lowered upon the mold, and air is admitted into the mouth-portion of the bottle, thus forcing the glass in the mold to conform to the internal configuration of the mold. Thilo the molding operation is being performed at the charging station, the

blowing operation is being performed at the blowing station. rllhe bottles carried from the blowing station to the point where they are to be removed from the machine, the molds being automatically opened during-'this time.

rEhe fri ctionally-actuated gears 17a and 18"* rotate rapidly, so that the work of raising the mandrel at one station and lowering it at another requires but an instant.

lt will be noted that the mandrel is positively withdrawn by reason of its screw-connection with the table which carries it; and the rate of rotation and withdrawal correspond exactly with the screw thread in the glass, so that there is a perfect unscrewing action in the glasswithout exerting` any pressure upon the glass, which at this stage still remains in a` more or less plastic condition. There' can be no deformation of the thread in the glass, because the mandrel can neit-her drop of its own weight nor lag behind so as to exert pressure upon the threads in the glass, because of the fact that the mandrel is positively held in exactly the proper height at every degree during the unscrewing operation by the metal screw-connections at l2EL and 12b. rlhe very simple eX- pedient of the friction-clutch device employed enables the mandrels to be screwed up and down expeditiously and without danger ofV injury to the parts, inasmuch as slippage will occur after the desired movement of the mandrel is effected,

A machine ofthe character described is adapted to produce rapidly and economically bottles provided in the mouthdportion with an internal screw thread, adapted to receive a threaded stopper, such as a glass stopper 8, equipped with a gasket 8b, as shown in Fig. 5.

lt will be understood that the table B is, in effect, a mold-carrier; and it is to be understood, also, that the mold-carrier may be given any suitableform, and 'that the molds may be mounted on the carrier in any suitable manner, various formsj of mold-carriers and various methods of mounting the molds on such carriers being known in the art.

T he foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitation should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

What l regard as new, and desire to secure by Letters Patent, is: Y

l. ln a machine of the character set forth, the combination with an intermittently-actuated table and a series of molds mounted 0n the upper side thereof, of a blow-head and having screw connection with the table and having an upper extremity adapted to ji 'ect into the mold cavity and provided with a thread of the same pitch as said screw connection, local gear mechanism below the table at one station adapted to rot-ate each mandrel in a direction to elevate the mandrel to the molding position preparatory to the ss-charging operation, and local gear mechanism located beneath the table at the other station and adapted to rotate each mandrel in the opposite direction and lower the mandrel from the molding` position.

2. ln a machine of the character set forth, the combination with a revoluble table and a series of molds mounted thereon, of a mandrel for each mold having screw connection with the table and provided with a threaded extremity adapted to extend into the mold cavity, and local mechanisms adapted to rotate said mandrels, seriatim, in one direction to project them into the molds and in' the other direction to effect withdrawal, each ot said local mechanisms being equipped with a frictioirclutch device to permit slippage. Y

ln a machine of the character setforth, the combination with a revolulole table and a series of molds mounted thereon, of a mandrel for each mold having screw connection with the table and provided with a threaded extremity adapted to project into the mold, a gear element on each mandrel, a gear element at a local station rotating in one direction, a gear element at another local station rotating in the opposite direction, said gearelements being adapted to be engaged, in turn, by the gear-elements of the mandrels, one set of said gear-elements being capable of slippage, for the purpose set forth.

fl. ln a machine of the character set forth, the combination with a revoluble table and a series of molds mounted thereon, of a mandrel for each mold having screw connection with the table and having a threaded eX- tremity adapted to project into the mold, gearclemcnts mounted on the mandrels, oppositely rotating gear-elements located at different local stations and adapted to en-V gage, in. turn, the gear-elements of the mandrels as they arrive at said stations, one set of said gear-elements being capable of slippage, and means for arresting the rotation of each mandrel in each direction after the mandrel has risen or fallen the requisite distance.

5. ln a machine of the character set forth, the combination with an intermittently-actuated rotary table and a series of molds mounted thereon, of a mandrel for each mold having screw' connection with the table and having threaded portion adapted to project into the mold, a pair of oppositely-rotating vertical shafts Situated at different local stations, gear elements journaled on ico said shafts and adapted to be engaged, in turn, by the gear-elements of said mandrels, and friction-clutch devices connecting said shafts with the gear-elements mounted thereon.

6. In a machine of the character set forth, the combination with an intermittently-actuated rotary table series ot molds mounted thereon, ot a mandrel for each mold having screw connection with the table and having a threaded portion adapted to project into the mold, a pair ot oppositelyrotating vertical shafts situated at ditr'erent local stations, gear-elements journaled on said shafts and adapted to be engaged, in turn, by the gear-elements ot said mandrels, and friction-clutch devices mounted on said shafts and equipped with adjusting devices, said clutch-devices being adapted to cause the' gear-elements on said shafts to rotate with the shafts and permit slippage after the mandrels have been moved the requisite distance.

7. ln a machine oi" the character set forth, the combination with an intermittently-actuated rotary table and a series ot mold mounted thereon, of a blow-head located at a glass-charging station above the path of said molds, a mold-cap located above the path of said molds at a blowing station, a mandrel for each mold having screw connection with the table and having a threaded extremity adapted to project into the mold, gear-elements mounted on said mandrels, oppositely-rotating gear-elements located, respectively, at the glass-charging station and the blowing station and adapted to be engaged, in turn, by the gear-elements of said mandrels when they arrive at said stations, and means for permitting slippage of one set of gear-elements after the mandrels have been moved the requisite distance.

8. In a machine of the character set forth, the combination with an intermittently-actuated rotary table and a series of molds mounted on the upper side of said table, a mandrel for each mold journaled in the table and having a threaded upper end adapted to project into the mold and equipped below the table with a gear-element, a threaded bearing for the lower end ot each mandrel disposed below the table and tixedly connected with the table, and power actuated local gear mechanisms disposed at ditferent stations below' the plane of the table and adapted to be engaged, in turn, by the gear elements of said mandrels when they arrive at said stations, whereby the mandrels will be elevated and lowered, seriatim, as they arrive successively at said stations.

9. In a machine et the character set forth, the combination with a revoluble table equipped on its upper side with a series ot' molds, mechanism for opening and closing said molds during the rotation ot the table, a mandrel fior each mold extending through and having screw connection with the table and having a threaded upper endportion adapted to project into the mold, means located above the table at one station tor admitting air-pressure to the upper iortion ot the molds as they arrive in turn thereae, local ine'hanism disposed. below the table for ro g each mandrel, in turn, in a given direction to elevate it to the molding position, a mold-cap located above the table at a blowing station and adapted to be lowered on said molds, in turn, and. local mechanism di Liosed beiov: the table and adapted to rotate each mandrel, in turn, in the opposite direction to lower :it to the inoperative position to enable the blowing operation to be performed.

l0. ln a machine ot the character set forth, the combination of a revoluble table, a series of mold-plates monntedj thereon provided with central chambers, mold-sections mounted on said mold-plates, means tor, opening and closing said mold-sections during the rotation of the table, a series ot plates secured to the lower side oi the table, each plate having a central projection extending tl rough an opening in the table and into the central cavity ot the corresponding mold-plate, posts depending from said last-named plates and equipped with cross-bars, mandrels iournaled in said last-named plates having threaded upper end-portions adapted to project tinto the molds and having threaded connection at their lower end with said cross-bars, gearelements mounted on said mandrels, means for limiting the rotation oi said mandrels in both directions, and local gear mechanisms having gear-elements rotating in opposite directions which are adapted to engage the gear-elements of said mandrels as they arrive in turn thereat.

ll, In a machine of the character set forth, the combination of' an intermittentlyactuated revoluble table, a series of sectional molds mounted thereon, means for closing and opening said molds during the rotation oi the table, a mandrel projecting through the table and having a threaded upper endportion adapted to extend into the mold, a gear-element mounted on each mandrel below the table, a member having screw connection with the lower end of each mandrel and lined connections with the table, a pair` oit vertical shafts equipped with trictionallyconnected gear-elements adapted to be engaged successively by the gear-elements ot said mandrels, and mechanism for continuously rotating said shafts in opposite directions.

12. The combination with a horizontal intermittently rotated table carrying a series ot spaced molds having bottom openings, ot

means mounted beneath said tahle tor torming an internal screw thread in the neelr ot a hottie blank, which placed in a mold, Said means consisting of an attachment com* prising screw tap or plug havin@ a stationary axis adaptedto simultaneously rotate and reciprocate longitudinally whereby it will loe moved inte the loottom opening ot' the mold prior tothe delivery thereto ol t charge ot molten glass and nf'ithdrawn therefrom prior to blowing the blank.

13. The combination with a horizontal in termittentlj,7 rotated table carrying a Series et. .C1-paced molde having bottom openings, of means mounted beneath ,said taille tor fornn ing an internal screw thread in the neck ot a bottle iilanlf, which ie placed in a mold. said means consisting oi1 an attachment comprising rotatingly and reciproeatingly mounted spindle located beneath the table, having a stationary axis and having a screw tap or plug on one end thereof Con-- Structed and arranged whereby when tlre spindle rotated in one direetion it will he moved endwise to place the screw tap or plug in the bottom opening oit the mold and when rotated in the ooposite direction it Will move endwiee to Withdraw the screw tap or plug from the mold.

la. rllhe combination as defined in claim l2 in which the spindle is supported by a bracket carrying a Stationary nut, and a thread provided on theV Spindle and len'gaging said nut and forming the means for nioving wwhen said spindle is roanother local station rotating in the oppo-V site direction, said local gear-elements being adapted to he engaged, in turn, hy the gearelements ot the mandrels, one set oi' gearelemente' being-capable of slippage, menne for limiting the axial movements of the mandrels.

1G. ln a machine of the character setitorth, the combination With a revoluhle' mold carrier and a series of molds mounted thereon, of a mandrel for each mold having screw-Connection with the mold carrier and provided with a threaded extremity adapted to project into the mold, a gear-element on eaeh mandrel, and local driving mechanisms having oppositely-rotating gear-elemente adapted to he engaged, in turn, by the gearelemente of t-hermandrele, the connections being adapted to permit slippage when the mandrels are held against rotation, and means for limiting` the axial movements of the mandrels.

HARRY M. BROWN.

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