US1904959A

US1904959A - Glassware forming machine

Info

Publication number: US1904959A
Application number: US444163A
Authority: US
Inventors: Leonard D Soubier
Original assignee: Owens Illinois Glass Co
Current assignee: OI Glass Inc
Priority date: 1930-04-14
Filing date: 1930-04-14
Publication date: 1933-04-18
Anticipated expiration: 1950-04-18

Description

A ril 18, 1933. L. D. SOUBIER GLASVSWARE FORMING MACHINE Filed April 14, 1950 10 Sheets-Sheet l A ril 18, 1933. D. SOUBIER GLASSWARE FORMING MACHINE Filed April -14, 1930 10 Sheets-Sheet. 2

| D. SOUBIER GLASSWARE FORMING MACHINE April 18, 1933.

April 18, 1933. L. D. SOUBIER I GLASSWARE FORMING MACHINE Filed April 14. 1950 10 Sheets-Sheet 4 April 18, 1933. D, SOUBIER 1,904,959,

GLASSWARE FORMING MACHINE I Filed April 14, 1930 10 sheets-sheets April 18, 1933. SOUBlER 1,904,959

GLASSWARE FORMING MACHINE Filed April 14, 1930 10 Sheets-Sheet 6 April 18, 1933. L. SOUBlER 1,904,959

GLAS SWARE FORMING MACHINE Filed April 14, 1930 l0 Sheets-Sheet 7 April 18, 1933. L, D. SOUBIER 1,904,959

' GLAsswARE FORMING MACHINE Filed April 14, 1930 10 Sheets-Sheet 8 April 18, 1933. 1.. D. SOUBIER GLASSWARE FORMING MACHINE Filed April 14, 1930 10 Sheets-Sheet 9 April 18, 1933.

L. D. SOUBIER GLASSWARE FORMING MACHINE Filed April 14, 1930 10 Sheets-Sheet 1O Patented Apr. 18, 1933 UNITED STATES,

PATENT; OFFICE LEONARD D. SOUBIER, OF TOLEDO, OHIO, ASSIGNOR TO OWENS-ILLINOIS GLASS COMPANY, A CORPORATION OF OHIO GLASSWARE roimmemcmm Application filed April 14,

The present invention relates to improve ments in glassware forming machines andable shaping means. Where the neck por-" tion or finish contains considerable glass, 1t

has a strong tendency to lose its shape because of its plastic condition and the fact that the neck mold has been removed, therea by leaving this portion of the article un- 2b supporl'ed. Articles of glassware produced under these conditions quite frequently have distorted finishes or neck portions and accordingly must be discarded.

Another objection in connection with machines of the above" character resides in the excessive and fequently one-sided chilling of the partially formed articles of glassware, due to exposure thereofto the chilling infiuence of the outside air, from the time the blank molds open until the finishing molds close. The excessive chilling which takes place during this time interval is often and in fact generally such that the surface glass is unevenly chilled, causing corresponding unevenness in the wall thickness of the articles of glassware, as finally shaped.

An object ofthe present invention is the provision in a machine of the above character, of means whereby the neck portions 40 or finishes of the articles of glassware are.

positively and completely supported from the time the glass is gathered from the supply body until it has been given its final shape in the finishing molds. To this end, 4 there is provided means whereby the neck molds which constitute portions of the blank forming units are transferred, with and while supporting the blanks or partially formed articles of glassware, to the finishing molds, said neck molds being retained in sup 9 formed articles or blanks.

1930. Serial No. 444,163.

porting engagement with the neck portions or finishes of the articles during the entire formation of the articles including thefinal blowing or expanding operation. Thus, the glass, being chilled bycontact withthe neck molds, is firmly and permanently set prior to withdrawal of the neck molds out of contact .with the glass.

Another object is the provision of means to avoid uneven chilling of the partially formed articles of glassware, referred to heretofore. In accomplishing this, I have provided reheating cups which are arranged for movement with the neck molds during substantially the entire blank transfer operation, said cups cooperating with the neck molds in completely-enclosing the partially These cups are of such formation that they not only prevent contact between the outside air and blanks,

but in addition reflect heat radiated from the blanks so that the surfaces of the latter are to a greater or less degree remelt-ed. This greatly facilitates final uniform expansion of the blanks,

A still further object is the provision of novel means for controlling the exhaust of air from the blank and neck molds during the mold charging operation. To this end there is provided a gathering head which carries a plunger adapted for cooperation with the neck molds in forming the neck or finish of the articles of glassware, said plunger also being adapted for vertical reciprocation whereby it alternately opens and closes ports through which the 'air is exhausted from the mold cavities.

Other objects will be in part apparent and in part pointed out hereinafter.

In the drawings-- Fig. 1 is a plan view of the complete machine embodying my invention. Fig. 1A is an elevation'illustrating the driving connection between the motor and parts driven thereby.

Fig. 2 is a fragmentary side elevation of the machine.

Fig. 3 is a fragmentary side elevation taken from the side opposite that shown in'Fig. 2.

Fig.v 4b is a vertical sectional elevational view of one of the blank mold groups in charge gathering position.

Fig. 5 is a fragmentary front elevation showing one of the blank mold groups.

Fig. 6 is a fragmentary plan view of a blank mold group.

Fig. 7 is a sectional view taken substantially along the line VIIVII of Fig. 4.

. Figs. 8 and 9 are fragmentary plan views with parts in section showing the cut-off knife in its two extreme positions.

Fig. 10 is a sectional elevation taken substantially along the line XX of Fig. 4.

Fig. 11 is a detail plan view illustrating the movements of the neck mold carriers incident to their resuming operative positions relative to corresponding body blank molds.

Fig. 12 is a rear elevation of one of the neck mold carriers showing its connection to the endless chains.

Fig. 13 is a vertical sectional elevation taken substantially along the line XIIIXIII of Fig. 12, showing in addition, supporting rails or tracks for-the carriers.

Fig. 14 is a fragmentary plan view of one of the neck mold carriers.

ig. 15 is a fragmentary plan view of one of the reheating cups and its supporting means.

Fig. 16 is a side elevation of the parts shown in Fig. 15, portions being broken away to disclose the cup construction.

Fig. 17 is a transverse vertical sectional View with parts in elevation showing the manner in which the neck molds and reheating cups cooperate to completely enclose the plartlially formed articles of glassware, or

an (s.

' Fig. 18 is a detail sectional elevation showing the relative positions of the plunger, neck mold and finishing mold just prior to final shaping of the article in said finishing mold.

7 side by side and rotating continuously about vertical axes, and a series of neck molds arranged for transfer from one carriage to the other for alternate cooperation with body blank and finishing molds and to support partially formed articles of glassware while being transferred from one mold to another. The blank mold carriage or table supports an annular series of partible body blank molds. Although other types of molds may be employed, the form embodied in the present machine is intended to be filled with molten glass, by suction. These molds move continuously in a closed path and by such movement are brought in succession to a mold charging station, where in cooperation with partible neck molds, they gather mold charges from .a supply body of molten glass and then transform them into blanks which are llater expanded to final shape in finishing mol s.

The finishing mold carriage supports an annular series of partible finishing molds to to the application of air under pressure in-' ternally of the blanks, give final shape to the articles of glassware being produced and finally by opening at, or a short distance in advance of a discharging station, eject the finished articles of glassware. 1

Transfer of the partially formed articles or blanks from the blank molds to the finishing molds, in the present machine (Figs. 1 and 3) involves movement of the partible neck molds, while supporting the bare blanks,

from one mold carriage to the other. Thus, the neck molds cooperate with the blank molds in initially forming the articles, support the partially formed articles while they are transferred to the finishin molds and in addition cooperate with the nishing molds in finally shaping the articles being produced. Distortion of the neck portion or finishes of the articles is avoided by retaining the neck molds in contact with said portions, as stated. These neck molds, after having cooperated with the finishing molds and prior to the time the finishing molds reach the article-dischargin g station, open and move laterally away from the finishing molds for return to a position at which. they again cooperate with the body blank molds in gathering'mold charges and transforming them into blanks, as stated heretofore.

Reheating of the partially formed articles of glassware, or blanks, while moving 'between the blank mold opening and finishing mold closing stations is provided for herein, so that said blanks assume such a plastic state that immediately upon being enclosed in the finishing molds, they may be expanded to their final shapes. For this purpose, the present machine is provided with a series of reheating cups which are moved in synchronism with the molds and thereby brought into position for cooperation with the neck molds to completely enclose the blanks during substantially the entire transfer period. Thus, excessive and onesided chilling of the blanks is avoided and they are in fact placed '23 from the finishing mold' carriage 24 for in the finishing mold befo e final shaping or expansion is started. Such reheating of the blanks in the cups is due to reflection by the cups of heat radiated by the blanks or parisons while enclosed in said cups.

More specifically, the machine comprises blank and finishing

mold carriages

23 and 24 respectively, mounted on a base 20 which is supported on wheels 21 so that the entire machine may be moved into and out of operative position relative to the furnace extension 22 or trough which contains the supply body of molten glass from which the mold charges are obtained. The blank mold carria e 23 or table is mounted on one end of the ase 20. The finishing mold carriage 24 or table is spaced horizontally from the blank mold carriage and mounted on the other end of said base. These carriages are rotated continuously about their individual vertical axes past the several stations heretofore referred to, by means including a motor 25 mounted on the lower side of the base 20. This motor operates through gears 26 and a shaft 27 (Fig. 2) to continuously rotate a pinion 28, the latter running in mesh with a ring ear 29 on the finishing mold carriage 24. otary motion is transmitted to the blank mold carriage through a pair of vertically spaced endless sprocket chains 30 (Figs. land 2) in a manner to be now described. These chains 30 (Figs 1, 2, 3, 4, and 19) are .trained over a pair of sprockets 31 on the upper and central

rotary spiders

32 and 33 respectively, of the blank mold carriage 23 and a pair of sprockets 34 on the upper part of the finishing mold carriage 24. Groups of 'neck I molds and elements associated therewith,

apart from the body blank and finishing molds, are mounted on said chains 30, as will be described in detail hereinafter. The cen:

tral columns

35 and 36 of the blank and finishing mold carriages respectively, (Figs 1, 2, 4, and 19) are rigidly connected together by a pair of guide-rails 37 secured at their ends to substantially semi-circular guide rails 38, the latter carried b arms 39 suitably fixed'to and extending ra ially outward from the central columns of the mold carriages. The function of theserails is to assist in supporting the neck mold groups in upright positions and in part control the path of movement thereof.

The blank mold carriage 23 or table (Figs. 1 and 4) is rotatably supported on the stationary central column 35 at one end of the base 20, said carriage including upper, lower and central spiders, 32, 40, and 33 respectively, rigidly connected together and adapted to rotate as a unit about said column.

'The central column 35 also supports a series of vertically spaced stationary cams adapted to actuate mechanisms for opening and closing, raising and lowering the blank finishing mold carriages.

forming molds, and performing various other operations, as will become apparent.herein after. The upper and central spiders at their peripheries support the pair of sprockets 31 referred to heretofore as providing partvof the driving connection between the blank and The upper spider 32 also supports part of the means including valves 138 and'150 (Fig. 4) for controlling the application of vacuum and air under pressure to the molds. The central spider 33 supports body blank molds 41 and mechanism for raising and'lowering them, as well as parts associated with.said molds during the charge gathering and blank forming operations. The charge severing mechanisms by which mold charges are separated from the supply body of molten glass are individual to the body blank mplds and mounted on the lower spider for rotation with the mold carriage.

The .body blank molds 4'1 (Figs. 1, 4., and 5) are arranged in an annular series about the p periphery of the central spider 33 upon which they are mounted for continuous rotation about the central column 35. By suchmovement these molds are brought in succession, first, to a charge gathering station over the furnace extension 22 or gathering trough and then to a station A (Figs. land 3) where they open, rele'asingpartially formed articles of glassware or blanks to the complete control of partible neck molds by which they are transferred'to finishing molds 155 for final shaping. Each body blank mold 41 consists of two sections supported on arms 42 (Figs. 2 and 4) which are pivoted to a vertical hinge pin 43 carried by the central spider 33 and adapted to oscillate about said pin for the purpose of alternately opening and closing the mold. Mechanism for oscillating each pair of arms 42 for the purpose stated, includes a slide 44 (Figs. 4- and 7) the slide. The slide 44 is .yieldingly connected to the arms 42 by a spring device .48 which forms part of a connection including links 49 and a slotted bar 50 which straddles thelower end of the hinge pin 43. The hinge pin 43 (Figs. 1 and 4) is slidingly supported inv a vertical bearing 51 arranged substantially at the periphery of the central spider, 33 of the blank mold carriage-23.-

The body blank molds 41 are. alternately raised and lowered at, and in proximity to, the charge gathering station so that the lower ends of the molds clear the rim of the furnace extension 22 prior to and after dipping therewith during the charge gathering and blank forming operations, as will be described hereinafter, are obtained by reciprocating the hinge pins 43 at regular time intervals during rotation of the blank mold carriage.

52 (Fig. 4) secured to the hinge pin 43 at a point above the bearing 51. This collar 52 and the bearing 51 are pivotally connected by slide 56 and runs in a stationary cam 59' mounted on the central column 35, between the upper and central spiders, said cam (Fig.

6) being so shaped that at regular time inter-' vals it reciprocates the slide 56 and through said links and arms, causes alternate up and down movementv of the collar 52 and corresponding movement of the hinge pin 43 and body blank molds 41 connected thereto.

Mechanism for severing the gathered mold charges from the supply body of molten glass inthe furnace extension 22 is provided for each body blank mold. These mechanisms (Figs. 4', 5, 8, and 9) are carried by the lower spider of the rotary mold carriage 23 and each includes a knife 60 fixed to one end of a knife arm 61 connected through a pivot pin 71 to a bell crank lever 62. This lever 62 is fulcrumed upon a vertical hinge pin 63 on the upper side of the lower spider 40 and is connected through a link 64 to a slide 65, the

,latter mounted in slideways 66 extending radially of the mold carriage. A cam roll 67 on said slide runs in a stationary cam 68 (Figs. 4, 8, and 9) which is shaped to reciprocate the slide 65 at regular time intervals in synchronism with the movements of the corresponding body blank mold 41 so that the knife is swung across the lower end of the body blank mold periodically. By pivotally connecting the knife arm 61 and bell crank lever 62 and providing a link connection 69 between a. fixed pin 70 on the lower spider 40 and a short finger 7O or lever on the arm 61, rapid cutting movement of the knife 60 is readily obtained.

The series of partible neck molds referred to heretofore (Figs. 1, 2, 3,4, and 5), in addition to cooperating with the body blank molds 41 in gathering mold charges and transforming them into blanks or parisons, function as carriers or transfer devices for transferring partially formed articles of glassware or blanks, from the body blank molds 41 to the finishing molds 155 on the mold carriage 24. The neck molds 75 register with the body blank molds 41 prior to, during, and for a short time following gathering of The mechanism for moving each blank mold group vertically includes a collar mold charges and then while supporting bare blanks, move away from the blank mold carriage 23 or table to the finishing mold carriage 24 where they register with open finishing molds preparatory to closing of the latter about the blanks. Each neck mold 75 (Figsf lower end 81 or wedge adapted for contact with adjacent inner faces of the neck mold arms 76 in proximity to the hinge pin 77. Downward projection of this pin 80 spreads the neck mold arms 76 and thereby opens the neck mold 75. The spring 79 automatically closes the neck mold immediately upon retraction of the pinto its uppermost position.

.This pin 80 is normally and yieldingly held in its uppermost position, out of contact with the neck mold arms 76 by a coil spring 82 (Fig. 4) which encircles said pin. A push rod 83 is connected at one end to the pin 80 and at its other end to. one arm of a bell crank lever 84, the latter pivoted to a horizontal hinge pin 85 and adapted to be rocked at regular time intervals by means of a stationary cam 86 (Figs. 1 and 2). This cam periodically forces the wedge 81 downwardly between the neck mold arms 76, thereby opening the neck mold at station D (Fig. 1) just before the neck mold and finishing mold 155 reach the point at which their paths of travel diverge.

The dipping frames 78, or neck mold carriers, which carry the neck niolds 75, plunger mechanism, and vacuum and air pressure control devices referred to hereafter, are supported on the sprocket chains 30 through which power is transmitted from the finishing mold carriage 24 to the blank mold carriage 23. Each dipping frame 78 is reciprocated vertically simultaneously with corresponding movement of cooperating body blank and neck molds during the mold charging operations. Such movement alternately makes and breaks "contact between the blank mold and glass. This movement is obtained by providing a vertically extending slide 87.

at the inner end of the horizontal base portion 88, said slide mountedin pairs of vertical guide bars 89 or slideways. guide bars are arranged in pairs at uniformly spaced points along the chains 30 and are suitably connected to the latter, such connection in the present embodiment of the machine comprising pivot pins 90 (see Figs. 12 and 13) extending vertically through the chains 30 and through lugs at the ends of said bars; These guide bars 89 and the sprocket chains 30 are supported against sagging, or

These otherwise moving out of the desired path of travel, by means including rollers 91 at the upper ends of the guide bars and rollers 92 at the lower ends thereof. The upper rollers 91. at times ride upon a circular track 93 (Fig. 4) extending about the margin of the upper spider 32 and at other times upon tracks 94 (Figs. 2, 3, and 13) which extend between the blank and finishing mold carriages in the plane of said circular track 93. These tracks 94 are disposed just below the guide rails 37 (Figs. 2 and 13) and'p-referably are supported thereby. The lower rollers 92 (Fig. '4) at times contact with a circular track 95 provided at the periphery of the central spider 33, and at other times with tracks 96 extending between the blank and finishing mold carriages, in a plane below and in vertical alignment with said tracks 94. These

rollers

91 and 92 hold the guide bars -89 and chains against sagging. Tilting of the guide'bars andelements thereon is prevented by means of a rollerv97 (Flgs. 4, 6, 12, 13, and 14) moun-ted on a hinge pin 98 connecting adjacent ends of a pair of bell crank levers 99, the latter fulcrumed upon hinge pins 100 rising from a cross bar 101 whlch connects the upper ends of the guide bars 89. The free ends 102 of the bell crank levers 99v are disposed b etween and cushionedby pairs of coilsprings 103. Thus, connection between 'the upper ends of the gulde bars 89 and the-

guide rails

37 and 38 is sufliciently flexible to insure against breakage under reasonably abnormal "strains, yet sufficiently rigid to reliably'hold the gu de bars, dlppmg frame, etc. in upright pos1t1ons.' V

Raising and lowering of the dlpping slide 87, simultaneously'wi'th similar movement of the neck and blank molds, is obtained by providing a roller 104 on the inner face of the slide 87, said roller adapted at times to occupy a position between vertlcally spaced arms of a yoke 105 formedon the outer side of the collar 52. This collar, as stated heretofore, is secured to the hinge pin 43 and moves up and down with the blank and neck molds at and in proximity to the charge gathering station. While traveling between the blank and finishing mold tables, the dipping frames 78 are held against downward movement by a track 106 upon which the rollers 104 ride. These tracks 106 (Fig. 11) have theirends tapered in such fashion that at a given point the rollers 104 are momentarilysupported by both the tracks and the lower arms of the yokes 105. Thus the-dipping frames may be easily transferred from the tracks 106 to the blank mold carriage.

Plunger mechanism and vacuum and air pressure control devices individual to the neck molds are carried bvthe dipping frames 78 and are transferred with the neck molds from one mold carriage to the other prises a plunger 110 (Figs. 4 and 19) which cooperates with the corresponding neck mold in forming the finish or sealing end and neck of the article and in addition forms an initial blow opening in the blank. The plunger 110 is separably connected to a holder 111 which in turn is mounted in a piston 112 on the lower end of a rod 113. This rod 113 extends vertically upward througha guide 114 on the head 115 of the cylinder 116 which encloses the piston 112 and is connected through links 117 to a bell crank lever 118', the latter pivoted to the hinge pin 85. A cam roll 119 on one arm of the bell crank lever 118 is adapted to engage a cam 120' (Figs. 1 and 2) at regular time intervals, said cam being so located and shaped that it rocks the bell crank lever 118 and thereby projects the plunger 110 into the neck mold 75, just prior to arrival at the mold charging station over the furnace extensionformed. A coil spring 126 normally holds the sleeve 121 in its. uppermost position within the cylinder 116- soathat, the ports in said sleeve and the skirt 122 are out of register with each other. A vacuum chamber 124 in the base portion 88 of the dipping frame 78 communicates, by way of ports 125'and the other ports 123, when the latter ports 123 are in register with each other and with the ports 125, with the interior of the skirt on said piston, so that vacuum is applied to the blank and neck mold cavities. Incidentally, this application of vacuum efi'ectively holds the piston 112 inits lowermostposition so that the plunger 110 is firmly held in position to cooperate with the neck mold 75 in forming the upperends of the blanks or. parisons. Also vacuum maintains the piston 112 in position to insure register of the vacuum ports 123 and 125 when necessary. (Fig. 4) encircling the upper p01 ion of the sleeve 121 between a radial flange on the upper end of the latter and an upwardly facing shoulder on the wall of the cylinder, operates to raise said sleeve-relative to the plunger 110 when application of vacuum is shut ofi", thereby breaking registration of the ports 123 in the sleeve 121 and skirt 122.

Vacuum is applied to the chamber 124 (Figs. 1 and 4) in each dipping frame 78 by way of an upwardly extending telescopic pipe 130'whose lower section-is attached to the base 88 and opens into the vacuum chamher 124 in the latter, while the upper section The coil spring 126 I of said pipe is mounted in a hanger 131 on one of the guide bars 89 for the dipping with the open outer end of a vacuum pipe 132 which is suitably supported on the'upper spider 32 of the blank mold carriage; The

vacuum pipe 132 (Fig. 6) extends radially inward to a valve box 133 (Figs. 4 and 6) the chamber 141 in the'base 88 by'way of a telescopic pipe. 142 (Figs. 3,'4, 5,' and 6), the lower section of the pipe communicating with Q contactwith an internal seat provided at the spider- 156 Movement oftlie slijde"162 lis carried by said upper spider and opening into a circular vacuumjchainber 134 formed in said spider.- A series of these vacuum pipes 132 is provided, said pipes being individual 5 to the body blank molds 41. .The vacuum chamber 134 opens into a stationary vacuum chamber 135 in a; drum 136 on the centralcolumn 35 and through a;pipe 137'leadsto a suitable source of vacuum supply. 'A cam 133 is at regular time intervals opened by means of a'stationary cam 139 (Fig. 4)'s0 that the 'air may be exhausted from the body blank and neck mold cavities for the purpose of delivering molten glass into said cavities. Operative connection between the vacuum -pipes 130 carried bythe neck mold groups and the vacuum pipes 132 on the blank mold carriage 23. is obtained byforming an inclined continuous sealing surface within the upper outer end of the pipe 132, upon which sealing surface, the tapered inner end 140 'oflthe pipe 130 seats at regular time interva s. V Y Upon completing the mold charging operation, application of vacuum is discontinued and the spring 126 expands, resulting in lifting the plunger 110 out of the neck mold and upward movement ofthe sleeve 121 and pis ton 112 to a degree suflicient to provide communication between the mold cavities and the chamber 141 for 'air under pressure.- This operation may take place while'the cut-ofl knife is in. position to close the bottom of the corresponding body blank mold 41 so that air under pressure which at this time is introduced into theblank and neck molds compacts the glass in the neck and body blank molds and against the cut-off knife. Air underpressure for this purpose is supplied to the chamber 141 while the upper section is 55 formed with an inwardly extending branch mounted in a pipehanger 143; the latter car ried by one of the-guide bars 89 for the dip ping frame. 78,- The'inner'end of this pipe" 142 is'taperedand' adaptedto have sealing open outer end of-an air pressure'supply pipe 144, suita-blymountedupon the upper spider,

V 32. This pipe. 144 extends radially inward to' a valve. box 145 carried by the spider 32,

; the interior of .said valve' box communicatcontrolled valve 138 carried by the valve box ing with a chamber 146 (Fig. 4).which in turn opensinto a supply chamber 147 in the drum 136. Air under pressure is constantly supplied to these fchambers. 146 and 147 through a supply pipe 148 which extends into the central column 35 and thence to any desired source ofsupply of air, under pressure. A series of these air pipes 144 is mounted on the upper spider 32, said pipes being individual-tothe' body. blank molds. Positive control of the applicationof. air under pressure to each of 'said'molds is obtained-by the valve 150 carried by the valve box 145 and a stationary cam 151 which is so positioned that it opens the valve 150 immediately, or at any predetermined time, following termination of the application of vacuum to said molds.

Upon completion of the-blank forming operation, the body blank molds 41 open one at a time as they approach the station A, (Fig. 1), and the corresponding neck molds and other elements supported by the dipping frames 78 are carried in a straight line away from the blank mold carriage 23 to station B where they move'into position over and in register with finishing molds 155. Just "after the neckmoldsleave" the blank mold carriage, they are lowered. a short distance by an angular'portion 255 in the track 106.

(Fig. 3) so that the lower surfaces of the neck molds are in substantially. the same plane'with the upper surfaces ofthe finishing :a d ith which said neck .molds are' a o to'register. Y

The finishing molds 155 and bottom plates 155 individual theretojare arranged in an annular series upon the lower spider 156 rotatably supported on the 'stationary central column 36 andso adapted t'obebrought in succession to a series of stations where the molds are opened, the blanks expanded-and the finished articles ejected from the molds. A rotary spider 157' mounted on the upper portion of the stationary column 36 (F ig. 19) is rigidly connectedthrough arms 158 to the lower spider156and consequently rotates with the latter. The bo'ttomplates are pivoted upon horizontal hinge pins :155 and by means of bell crank levers 155and a'cam 155 are alternately raised and'lowered relative to themolds. I

. A ar pe' j g a d elo i g' n-fin- -'1 sh1ng m oldisobtainedby a construction substantiallyas' follows. The niold sections.-

are pivoted to a {vertical hingepin; 159 through mold ar'm's160, the; latter being, connected'through links 161-120 a slide 162 which is adapted to'be' recip l atj ra ially oflthe fin shing mold carriage'jn aj' slideway 1 63,

supported on the-upper side of "thelower obtainedby a"'station'ary continuous earn The neck and finishing molds 7 and 155 respectively (Figs. 1 and 19) are positively held against premature opening by a pair of clamps in the form of arcuate fingers 166 car ried by arms 167 which are mounted on the finishing mold hinge pin 159. These arms 167 are connected through links 168 to a slide 169 mounted in a slideway 170 on the lower side of the upper spider 157, said slide 169 adapted to be reciprocated radially of the finishing mold carriage at regular time intervals by a stationary cam 171 connected to the slide 169 through a cam roll 172. This cam 171 is so shaped that it reciprocates the slide 169 at regular time intervals and causes the arms 166 to grip the neck and finishing mold sections substantially at station B (Fig. 1) and release them just in advance of station D. It is evident that these curved arms 166,.to some extent, serve as sealing means, preventing loss of air under pressure, in addition to locking the molds against premature opening as above described.

The finishing molds 155 close about the partially formed articles of glassware or blanks substantially at station B (Fig. 1) preparatory to final expansion of said partially formed articles or blanks. Air under pressure is directed into the initial blow openings in the blanks by way of the neck mold cavities, from the chambers 141 in the dipping frames 78. Air is supplied to the chambers 141 during the final blowing operation through pipes 175 arranged in an annular series upon the upper spider 157 of the finishing mold carriage. These pipes, which are individual to the finishing molds 155, are adapted to be separably connected to the telescopic pipes 142 in the same manner that the latter pipes are connected to the air pressure supply pipes on the blank mold carr age. The inner ends of the pipes 175 on the finishing mold carriage are connected to valve boxes 176, the interior of which communicate with chambers 177, the latter being in con- 'stant communication with a circular chamher 178 encircling the central column 36. This chamber 17 8 is connected through a. supply pipe 179 to any suitable source of supply of air under pressure (not shown). A cam controlled valve180 is provided for each of the supply pipes 175 and is adapted to be opened at regular time intervals by a stationary cam 181.

As the dipping frames 78, carrying the neck molds 75; plunger mechanism and parts heretofore described, pass the finishing mold closing station B (Fig. 1.) the upper and lower supporting

rollers

91 and 92 respectively (Fig. 19) move onto continuous upper and lower tracks and 186 respectively, on the upper spider 157 of the finishing mold carriage24. The roller 104 carried by the slide 87 movesoff of the supporting rail or track 106 extending between the mold carriages,

onto a track 187 (Fig. 19) which extends entirely around said spider 157. The roller 97 (Figs. 4 and 19) at all times runs in the

tracks

37 and 38 which together form a continuous guideway therefor. After completion of the final blow, and prior to reaching station D,

the clamping arms 166 and corresponding finishing mold 155 and neck mold 75 are opened and the neck mold 75 is lifted a short distance riding up the in-- the neck molds, and thence to the I In the present machine there is provided means for enclosing the parisons during their travel between the body blank mold opening station A and the finishing mold closing stat-ion B, thus protecting them from exposure to the outside air to an exte-ntto cause excessive or one-sided chilling. Such enclosing means also provides for reheating the blanks to such an extent that they may be expanded immediately after they have been completely enclosed in the finishing molds.

Thus, the customary re-heating of the blanks v in the finishing molds is unnecessary. This is accomplished by mechanism including a series of re-heating cups 190 (Figs. 1, 3, 15, 16, and 17) supported at uniformly spaced points on an endless chain 191. This chain is arranged between the stations A and B (Fig. 1) and runs reaches'of the chains 30 and in the same direction as the latter. The chain 191 is trained over a pair of horizontally spacedrsprockets 192 which are carried by shafts 193 suitably journaled in bearings at the outer ends of supporting arms 194 or brackets carried by the base 20. This sprocket chain 191 and the parallel with the adjacent reheating cups supported thereon, are operated in synchronism with movements of the molds, through the provision of, driving means (Fig. 1A) consisting of shafts 195 (Figs. 1 and 3) which are driven continuously by the ring gear 29. 'Gears 196 provide con-.

nection between these shafts and one of the shafts 193 carrying the sprocket Whcels192. The reheating cups are connected through 1 arms 197 to hinge pins 198 which may form part of the sprocket chain 191. These hinge pins 198 carry rocker arms 199. Cam rolls 200 on these arms 199 are adapted to ride upon the cam or track 201 at times. said track so arranged and shaped that it swings the cups" upwardly; completely enclosing the partially formed articles orblanks approximately at station A. The upper ends of these cups chamber in which suitable insulating material 204 is placed. Preferably, the inner wall 202 is formed of somesuitable bright metal which will reflect the heat radiated by the partially formed articles or blanks and as a result reheat and soften the surface of the blanks during transfer from the body blank molds 41 to the finishing molds 155. Thus, these cups have a two-fold purpose, in that in the first place, they prevent contact of the blank with the outside air to any great extent and in the second place operate as blank reheating devices, thereby avoiding the necessity for reheating said blanks after they have been enclosed in the finishing molds.

In operation, the motor 25, through the gears and shafts referred to heretofore, imparts continuous rotary movement to the finishing mold carriage 24 and through the

sprockets

34 and 31 and sprocket chains 30 constantly rotates the blank mold carriage 23. The dipping frames 78 carrying the neck molds and parts described heretofore, move continuously in synchronism with the body blank and finishing

molds

41 and 155 respectively, and the reheatingpups 190.; At the mold charging station over the furnace ex-- tension 22 (Fig. 4) the dip slide 56 is actuated to lower the dipping frame 78 so that the lower end of the body blank mold 41 contacts with the surface of the molten glass in the furnace extension 22. The vacuum control valve 138 (Figs.- 4 and 6) is now opened and air is exhausted from the blank and neck mold cavities, and the latter filled with molten glass. The dip slide 56 is now moved in a reverse direction, to the other movement, raising the dipping frame and consequently the body blank mold. Imme- 4 plunger 110 and sleeve 121 lifted. This lat-v diately, the cutoff knife 60 is swung across the lower end of the body blank mold, severmg the excess glass from the gathered mold charge and closing the bottom of said mold.

The vacuum valve is now closed and the terpperation is due to expansion of the spring, 126 immediately upon closing of the vacuum valve 138, such expansion of the spring resulting in upward movement of the sleeve 121 so that the air pressure chamber 141 communicates directly with the neck mold cavity. Immediately, the air pressure control valve 150 (Figs. 4 and 6) is opened so that air under pressure is supplied to the upper end of the gathered mold charge and compacts the glass against the knife 60 and walls of the mold cavities. During rail for said roller, the dipping frame is lowered so that the lower side of the neck mold is in thesame plane with the upper surface f the finishing molds. Simultaneously with lowering of said dipping frame 78, and therewith the corresponding neck mold 75, one of the reheating cups 190 (Fig. 3) moves upwardly around the blank and into sealing contact with the lower surface of the neck mold. This position of the reheating cup is maintained until the cam roll 200 reaches the left hand end of the track 201 (Fig. 3) where the cup of its own weight drops away from the blank. Continued movement of the neck mold carries the blank to the station B where it assumes a position over and in register with the bottom plate 155 of one of the finishing molds 155. Immediately, the finishing mold slide 162 operates to close the finishing mold about the blank and bottom plate. This operation is followed by movement of the clamping fingers or arms 166, (Fig. 19) into position to'positively hold the finishing and neck molds against premature opening and in addition to function to some extent as a sealing ring as stated heretofore. Operative positioning of the clamping arms 166 is followed immediately by opening the-valve 180 (Fig. 19) whereby air under pressure is admitted to the neck mold cavity and thence to the initial blow opening in the blank for the purpose of expanding the latter against the walls of the finishing mold cavity. This application of air under pressure may be maintained until just prior to the time the finishing mold reaches the station D where the neck mold 75 opens and leaves the circular path of travel of the finishing molds, preparatory to its return to the blank mold carriage 23 for cooperation with another bodv blank mold in forming another blank in the manner described above. The arms 166 open prior to reaching the station D. At the station D (Figs. 1 and 2), the neck mold 75 is completely opened and the dipping carriages, partible body blank molds on the blank mold carriage, partible finishing molds on the finishing mold carriage, an endless carrier encircling said carriagesand so connected thereto as to be constantly moved by rotation of said carriages, and a series of neck molds mounted on said carrier and adapted to be brought by movement of the latter into register with the blank and finishing molds in alternation.

2. In a glassware forming machine, blank and finishing mold carriages arranged side by side and rotatable continuously about different vertical axes, means for rotating said carriages, partible body blank molds on the blank mold carriage, partible finishing molds on the finishing mold carriage, an endless carrier encircling said carriages and so c0nnected thereto as to be constantly moved by rotation of said carriages, a series of neck molds mounted on said carrier and adapted to be brought by ,movement of the latter into register with the blank and finishing molds in alternation, means for forming blanks in they registered body blank and neck molds, means for opening the blank molds at predetermined station leaving the blanks suspended bare from theneck molds, and reheating cups adapted to cooperate with the register with one another.

neck molds in completely enclosing the blanks during movement of the latter to the finishing molds.

3. In a glassware forming machine, the combination of an annular series of partible body blank molds, an annular series of partible finishin molds, said series of molds arranged side y side and rotating about difierent vertical axes, means for imparting continuous rotary movement to the molds, an endless carrier encirclingthe series of body blank and finishin molds and providing driving connectiont erebetween, a series of partible neck molds mounted for vertical up and down movement on said carrier, said neck molds arranged to register with the blank and finishing molds in alternation, and means for alternately raising and lowering the blank and neck molds at predetermined points while in 4. In a glassware forming machine, the combination of a body blank mold, a finishing mold spaced horizontally from the body blank mold, means for rotating said molds in horizontally separated closed horizontal paths, a series of neck molds, means for causmg the neck molds to travel in a closed path surrounding said mold paths and causing the combination of a partible body blank mold,

a partible finishing mold, means for continuously rotating said molds in the same direction in horizontally separated closed horizontal paths, a series of partible neck molds, means for causing the neck molds to travel in a closed path surrounding the said mold paths and for positioningthe neck molds in succession' over and in register with the body blank mold and the finishing mold in alternation, means for forming a blank in body blank and neck mold while they are in register with each other, means whereby the neck mold transfers the blank to the finishing mold, and means for expanding the blank to its final shape in the finishing mold while the latter is in register with a neck mold.

6. In a glassware forming machine, the

combination of an annular series of body for transferring the neck molds from positions over and in register with the body blank molds to corresponding positions relative to the finishing molds to thereby transfer blanks from the body blank= molds to the finishing molds, means for forming blanks in the body blank and neck molds, and means for expanding the blanks to their final shapes in the finishing molds.

7 In a glassware forming machine, the

combination of an annular series of blank forming units, an annular series of finishing mold units spaced horizontally from the blank forming units, means for moving said blank forming and finishing mold units about separate vertical axes, and ,in separate closed paths spaced apart, means for forming blanks in the blank forming units, means for moving the blanks from one to the other of said paths for transferring theblanks to the fin ishing mold units, means for expanding the blanks in the finishing mold units, and means for enclosing the blanks and traveling therewith during at least a major portion, of

their said movement from one to the other of said paths during the transfer period.

with the body blank and finishing molds in alternation.

9. In a glassware forming machine, the combination of a blank mold carriage, an annular series of partible body blank molds thereon, a finishing mold carriage, a series of partible finishing molds thereon, means for rotating said carriages in the same direction about different vertical axes, an endless chain providing driving connection between the two carriages, a series of neck molds carried by the chain and adapted to register with the body blank and finishing molds in alternation, means for forming blanks in the body a blank and neck molds while they are in register with each other, and means for expanding the blanks to their final shape in the finishing molds while the latter are in register with the neck molds.

10, In .a glassware forming machine, the combination of a blank mold carriage and a finishing mold carriage arranged side by side and rotatable about different vertical axes,

a. series of suction body blank molds on the blank mold carriage, a series of partible finishing molds on the finishing mold carriage, means for rotating the mold carriages in synchronism including an endless chain extending about the carriages and imparting movement from one carriage to the other, a series of neck molds supported on the endless chain at uniformly spaced points, means for causing register ofthe neck and body blank molds, means for alternately raising and lowering the body blank molds, means whereby corresponding movement is imparted to the neck molds while in register with the body blank molds, means for forming blanks in the registered body blank. and neck molds, means for opening the body blank molds at a redetermine point in their travel leaving t e blanks suspended bare from the neck molds, said neck molds adapted to transfer the blanks to the finishing molds due to movement of said neck molds with the chain, means for closing the finishing molds about the blanks, and means for expanding the blanks in said finishing molds. I

11. In a glassware forming machine, the combination of a blank mold carriage and a finishing mold carriage arranged side by side and rotatable about separate vertical axes, means for continuously rotating the carriages in the same direction, a series of partible body blank molds on the blank mold carriage, a series of partible finishing molds on the finishing mold carriage, an endless carrier surrounding said mold carriages, a series of partible neck molds on said carrier,

and means for driving the'carrier and causing the neck molds to be transferred from one carriageto the other and into register with the body blank and finishing molds in valternation.

said carriages and operable to transfer said neck molds from one carriage to the other and into register with the body blank and finishing molds in alternation, cups,- and means for positioning the cups periodicallyto cooperate with the neckmolds to form closed chambers enclosing blanks being transferred from the body blank to the finishing molds. I

13. In a machine for molding glass articles, the combination of a blank mold, a finishing mold, means for causing the blank mold to travel in a closed path, means for causing the finishing mold to travel in a closed path located outside of and in substantially the same plane as said first mentioned path, a transfer device, means for causing it to travel in a closed path embracing said first mentioned paths and having portions coincident with-said first mentioned paths respectively,'and means cooperating with said transfer device for transferring a parison from the blank mold to the finishing mold.

14. In a maehine'l'or forming glass articles, the combination of a blank mold, means for rotating it about a vertical axis, a finishing mold, means for rotating it about a separate vertical axis, with the path of movement of the finishing mold external to that of the blank mold, a transfer device, means. for moving sa d transfer device in'a path embracing Sflld first mentioned paths'and tangent to one of said paths, and means (20-