US1400621A - Mechanism for forming glassware - Google Patents

Description

W. J. MILLER.

MECHANISM FOR FORMING GLA'SSWARE.

APPLICATION FILED DEC. 16, 1918.

Patented Dec. 20, 1921.

6 SHEETS-SHEET I.

INVENTOR,

w 11' N is 'KITDILWORTII W. MILLER. MECHANISM FOR FORMING GLASSWARE.

APPLICATION FILED DEC. 16. I918- Patented Dec. 20, 1921.

6 SHEETS-SHEET 2- INVENTOI.

WITNESS :9

w. J. MILLER. MECHANISM FOR FORMING GLASS'WARE.

APPLICATION FILED DEC. W. 1918- Patented Dem-20, 1921.

I 6 SHEETS-SHEET 3.

W QfVEIN'IZOI; W

wrrucss W. J. MILLER.

MECHANISM FOR FORMING GLASSWARE.

APPLICATION men 050.16. 1918.

1 ,4;OO,621,' Patented Dec. 20, 1921.

6 SHEETS-SHEET 4- M M waaw W. J. MILLER.

MECHANISM FOR FORMING GLASSWARE.

APPLICATION. FILED DEC-16,1918.

1 ,--];OO,62 1 Patented Deo- 20, 1921.

6 SHEETS SHEET 5- WITNESS pin 07f W. I. MILLER.

MECHANISM FOR FORMING GLASSWARE- APPLICATION FILED DEC. I6. I918.

1,400,621, Patented Dec. 20, 1921.

6 SHEETS-SHEET 6.

INVENTOR.

onrrno stares PATENT OFFICE.

WILLIAM 3'. HELLER, F SWISS'VALE BOROUGH, PENNSYLVANIA.

MECHANISM FOR- .FORMING GLASSWARE.

Application filed December 16, 1918.

To all whom it may concern.

lie it known that 1, "WILLIAM J. liltnnnn, a citizen of the United States. and residing in the borough of Swissvale, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful provements in Mechanism for Forming Glassware, of which the following is a speciflcation.

My invention consists in a new and improved machine for pressing glassware, and means for mounting the same in connection with the tank or other container of molten glass.

The object in view is the provision auto matic mechanism of this character wl iich will produce pressed glassware at great iced and in large quantities, thus greatly reducing the cost of manufacture and increasing the out put.

Generally speaking, the machine consists of a series of molds, pivotally mounted and flexibly connected together; means for moving said series intermittently to bring said molds in turn into the pressing position; means for shearing the glass deposited into the molds; pressing mechanism, and means for tilting the molds to discharge the pr sed ware. V

l also show means for increasing or decreasing' the number of molds in the series, as may be required.

l also show a new and improved mounting for the machine in connection with glass tank, which greatly facilitates the operation of the machine.

Novel features of construction and arrangement of parts will appear from the following description.

In the accompanying drawings, which are intended merely to illustrate a practical embodiment of the principles of my invention without limiting the scope of the same to the construction shown, Figure l is a side elevation of a machine, embodying my invention, shown mounted on the front of a gl tank; 2 is a top plan View of; the sm 9, the tank being shown in broken horizontal section; Fig. 8 is an enlarged longitudinal section taken along the line Ill-Ill in Fig. 2; Fig. i is an enlarged cross section taken along the line lV--lV in ig. 2; is a partial side elevation of the machine with the left land cover plates removed; Fig. 6 is an S iecificatiou of Letters Patent.

Patented. Dec. 20, 1921.

Serial No. 266,910.

enlarged broken vertical section showing in detail the pressing plunger and follower, the section being taken at right angles to that in Fig. 4: and the mechanism being shown depressed to engage one of the molds; Fig. 7 is a plan View of one of the molds, showing its mounting in the flexible side chains; Figs. 8, 9, l0 and 11 are, respectively, inside face views of the lower left hand cover plate, the lower right hand cover plate, the upper left hand cover plate and the upper right hand cover plate; Fig. 12 is a detailed view in plan showing the depending loop of the mold car rier and the stirrup mounted thereon, and Fig. 13 is a plan view on smaller scale than Fig. 2 and better illustrating the mounting of the machine in relation to the tank.

Referring to the accompanyin drawings, I will first proceed to describe the structure of the machine itself, and then its mounting in relation to the glass tank.

A represents a pair of side frames connected together by means of a horizontal bed block B through which and through said frames pass the stay bolts 1, the ends of said bolts being seated'in countersunk recesses in the outer faces of the frames. 2 represents vertical flanges at either side of the block forming horizontal tracks. Cisa shaft journaled transversely of the machine in the frames and block, and at either end, outside of said frames, said shaft has rigidly mounted thereon a cam 8 or d, the cam 3 being wider than the cam 4: and provided with a perimetral flange 5 to prevent the accidental slipping off of the eccentric strap to be described. Outside of the cam 3 the shaft C is provided with a worm wheel 6 meshing with the worm collar 7 on the driven shaft D mounted longitudinally of the machine. The sides of the machine areinclosed by lower cover plates E and E which are bolted in place to the frames A.

The shaft 6 ends at the outer hub of the wheel 6 and said hub is provided with a concentric seriesof sockets 8 engaged by a similar series of studs 9 on the inner face of disk 10 which revolves in a circular hole 11 in the cover plate'E. 12 is a stuthng box bolted to the outside of the plate E having its bore concentric with butof less diameterthan the said hole, so that the outer faceof the disk bears against the inner end of the stuffing box, said disk being kept in close resilient revolution of the shaft C. reciprocates The upper ends of thestraps tending axially from the disk that a grease and contact with said 'stuiiing box by means of a helical spring 13- seated in a shallow bore i lin the end-of shaft C. 15 is a stub shaft exstuffing box and having a cam wheelie adjustably fixed on its outer end. It is evident oil-tight joint is obtained between the cover plate E and the extension of the shaft G, thus preventing the escape of lubricant.

I show the said cam 16 used for operating the shear mechanism to be later. described, butthe same may be used for actuating other of the elements of the machine, as may be found convenient.

F is a cross-head guide in the form of an.

annular sleeve which is bolted or otherwise secured to the tops of the frames A and serves I r and H which are bolted or otherwise secured to the cross head-guide and the side frames. The lower edges of the cover plates and H fit down on and make a tight fit with the top edges or the cover be suitably journaled in boxes 23 formed on the abutting edges of the cover plates E and H. I V V l 'isrthe plunger or pressing element pro M vided with an internal water chamber 2e.

Said ilun er is rovided with an axial con- 1 1. 1 tracted and threaded throat 25 which forms the inlet port for said chamber, the outlet 7 ports 26 of said chamber being of smaller size throat 25, and

I and arranged in concentric throat. 27 is the plunger shaft which is series about said externally threaded and screwed into the whose axial bore forms the water inlet passage. The outer end of said shaft bore is countersunk and threaded for the attachment of the flexible water inlet pipe 28. An annularhead 29 is screwed onto the upper end'of the shaft 27, having its lower end tapered to fit into the flared upper bore of the tubularplunger holder 30 whose bore fits loosely aboutthe shaft 27 and whose lower end bears on the plunger 1. An eccentrically located port 31 through the head 29 connects with the annular space between the shaft and holder and has its outer end'countersunk'and threaded for the attachment of a flexible pipe 32. This forms the outlet for 10 through the prevent accidental which 'rooves are inclosed by the top cover plates 7 plates E and E, respectively. The driving shaft D may the water from the chamber 24 through the ports 26. V

The holder '30ris exteriorly threaded and its lower end is screwed into a collar 33. To

disengagement of the collar from the holder, 1 may flare the lower extremity of the holder and the bore of the collar, as shown.

is a perimetral flange on the collar 33 which is adapted to engage from below an internal'fiange of the bottom spring plate 35 which bears on the annular plunger follower 36 surrounding the plunger 1. The follower 36 is provided with an internal top flange 37 which is engaged from below by the shoulder 38 of the plunger afterthe plunger starts its ascent, thus causing the follower to first lag behind and then ascend with the plunger. 39 is an annular water passage in the follower 36 which is intersected at one point by a cross partition 40 on either side of which a threaded port extends through the outer wall of the tollower to the water passage. lnto said ports are screwed the pipes 4:1, for which clearance is provided by one of the vertical apertures 42 in the base of the cross-head guide F. water pipes as connect with the outer ends of the pipes and the escape of water from the passage 39, thuscooling said follower.

. ie is a helical spring coiled about the plunger holder, its lower end bearing on the collar 33, while its upper end bears against the upper spring plate 45. A second helical spring 4E5 is coiled about thespring 4:4, and preferably is of less strength than the latter, its lower end bearing on the spring plate 35 while its upper end bears on the spring plate 45.

The upper spring plate 45 is a split spring annulus which loosely holder and is expanded into tight contact with the cross-head G by means of a tapered and threaded plug l"? which is screwed into a tapered and threaded hole vertically intersecting the splitin the ring L5. Thus by unscrewing the plug, the ring may be loosened from the cross-head and adjusted in relation thereto, and by screwing up the plug, the ring may be rigidly fixed in position in the cross-head.

48 represents wing nuts the holder 30 to compress the helical springs. I To preventthe holder 30 from turning in relation to the shaft 27, a leather or lzey 49 is seated in alined recesses cut in the plunger. and plunger holder i The mold carrier comprises a pair of endless side chains made up of links 50 detachably pivoted together, as by means of pins or other members 51. Thus the chains may be lengthened or shortened, as desired, by the introduction of or removal of the proper number of links. The chains run in vertical screwed down on Flexible ll for the admission of water into encircles the plunger 7 planes relative to the machine and are supported by means of pulley 52 journaled on stub shafts extending inwardly from the side frames A at either end of the machine. The horizontal portions of the chains between the pulleys 52 run along the tops of the flanges 2 of the block 13 and preferably beneath undercut ledges 53 in the faces of the side frames to prevent buckling. At the rear of the machine said chains are engaged from below by pulleys 54 loosely mounted on stub shafts 55 extending from the frames A. Thus the chains are doubled up to encircle about half of the perimeter of the rear pulleys 52.

J represents a plurality of molds, preferably of circular form, pivotally mounted at regular intervals between the side chains. Said molds are provided with two diametrically opposed, radial trunnions 56 which are journaled in bushings 57 which are substituted for the pins for connecting together the adjacent ends of the chain links, the ends of said bushings being upset to prevent their slipping out of engagement with said links.

It is evident that the length of the chains and the number of molds mounted thereon may be easily regulated as circumstancesmay require.

is a table or platen mounted horizontally on the block l3 between the frames A and beneath the pressirnq mechanism. Thus the molds move along over said table beneath the pressing mechanism. The rear end of said table is curved downwardly, as, at 58, to form an incline to assis the molds in riding up onto the table as the chains move counterclockwise.

The method of imparting intermittent movement to the series of molds is as follows. 59 represents ears dependin from the Straps 9.1, horizontally pierced for pivotal attachment of links 60 whose other ends are pivoted to levers 61 intermediate of the latter. The lower ends of levers 61 pivoted to blocks 62 sliding in seats 63.) on the outer faces of frai'nes A. while the upper ends of said lever are pivoted to bars 64% sliding in grooves 65 on the outer feces of said frames. 66 is a cross-head whose ends are journaled in the ends of bars 64, and 67 represents a pair of push rods adjustably mounted in said cross-head, whose free ends are curved downwardly and extend forwardly of the machine to engage the links of the carrier chains. the shaft C rotates, the cross-head. 66 reciprocates back and forward, and during its forward move ment the curved ends of the rods 6? engage the links of the chains and move the counterclockwise, while during the rearward movement of the cross-head, said rods trail idly over the chains without moving the latter.

The freeends of the push rods 6? en gage the links at the molds J, as shown in Fig. 3, and the forward movement the push rods moves the mold so engaged into the pressing position. The force is thus ap plied to the mold, instead of to the links in termediate of the molds, so that wear in the links does not interfere with spotting the molds accurately under the pressing position and any buckling of the carrier chains is avoided. The push of the rods on the molds may be regulated by adjusting the rods in the cross head thus compensating for any wear and enabling the molds to be accurately spotted.

The inwardly extending ends of the stub shafts 55 are flattened on top so that the inner end of the chute L maybe bolted there to, the chute being outwardly and down wardly inclined, as shown, and its inner end protruding sufficiently to engage the molds as they rise to pass over the pulleys 54, so that said molds are upset and their contents dumped into the discharge chute. By positioning the trunnions 56 above the center of gravity of the loaded mold, said molds retain their upright position throughout their travel except when engaged by the inner end of the discharge chute. Then the molds are upset and their contents discharged, but said molds immediately reverse into their normal position, so that they rise up over the rear pulleys 52 with their mold cavities on top, ready to receive the gather of glass.

1 provide a shear mechanism to cut off the neck of glass when the gatherer deposits the molten glass in the mold before it moves into the forming position under the plunger mechanism. Thus l show a stationary shear blade 68 mounted on top of the cover plate E and extending over the path of the molds at the point where a mold stops before moving into the torming position. 69 is a movable blade pivoted to blade 68 and open and closed at the proper intervals by means of a link 70 which connects the butt end of said blade with the upper end of a rocking lever 7-1 pivoted to the cover plate E and having its lower end held in contact with the perimeter of the cam 16 by a spring; 72. e

The shaft D is provided with a belt pulley 73 for the application of power, and said pulley is loosened or tightened on said shaft by means of clutch mechanism 74. 75 is a hand crank device by means of which the machine may be turned over for adjustment or repairs. Said'hand crank device may be journaled in a bearing 7 6 preferably formed in an extension of the cover plate E.

The general operation of the machine is as follows:

Anytsuitable means or method of depositing glass in the molds before they are spotted in the forming position may he adopted. Thus automatic or semi-automatic gathering mechanism may he used, but I have shown, and will hereafter describe the employment oi? a gatherer for that purpose.

.As the molds in turn reach thestation next before the pressing station a gather or" molten glass is depositedin the waiting mold and neclr oi? the glass sheared by the closing of the shear blades. of the carrier the loaded mold is positione der the pressing mechanism, which de- (ds, the following 36 first seating on the top oi'the mold and covering the outer rim of the mold cavity. T he plunger l then descends into the mold cavity and presses the glass into the desired form. When the crosshead is: starts to ascend. the plunger 1 la gs be- 1 hind, remaining in the mold until the spring r as already described, in the ring as strikes against the nuts ddsaid ring having descended out of contact with said nuts owing to the compression of helical springs in forcing the plunger and plunger follower into engagement with the mold.

The period'between the beginning or the upward movement Of the cross-head and the en a ement of the nutsb the rin dew a L p b ternnnes the dwellwor the plunger in the mold. said nuts 18 the plunger l begins to rise'out of the mold, but the follower 86 remains seated upon the mold until the shoulder 38 on the plungerhngages from below the flange 37 on the follower, thus causing the follower to rise with the plunger. The lag t tl f ll l tl l oi ie onowci mount '19 plun er enales the i ormer to hold the pressed were in the mold until the plunger is stripped or disengaged therefrom, thus preventing the pressed ware from rising out of the mold with the plunger. The tension of the springs ie and 46 determines the resilient forcewith which the plunger and follower engage the mold, SlltlfOlCQ being adyusted by means 0; the

nutsel, so that the design of mold in use will be properly filled by the descent of the q plunger into the same. 'hus a deep mold will require 'more force vto fill will a shallow mold.

If the spring ring 4-5 were not adjustable, cross-head G, the screwing, down of the nuts e8 to increase the compression of thehelical springs would serve to elevate the plunger and follower. in

suit various heights or characters o'fmolds relation to the cross-head, and likewise the unscrewing of said nuts to reduce the comnressionof the helical springs would depress the plunger and follower in relation to the cross-head, thereby rendering the proper positioning or the pressing mechanism toimpossible. By first adjusting the nuts 4.8

on the holderuBO so that the desired compreshelical springs, and then sion is given to the thus loosening unscrewing the plug 47, and

By the next movement When said ring as strikes against varied by from the chain links and molds. Where the after bllG pressing operation, the mold now containing the pressed ware passes forwardly,'and then stop by step downwardly and then upwardly, alw ys retaining its upright position throughgravity, until it en- 'ages the chute L which upsetsthe mold and euinps its .contentsinto the chute, the mold then rerighting as it approaches and mounts the table lI oncemore. 1 p

The forward movement of the molds takes place during the latter part of the upward movement or" the pressing mechanism and during the first part o1 its downward movement, thus clearing the molds of the pressing mechanism during the movement of the molds.

As stated the number of molds may be he addition to or suhstraction length of the chains causes'them to loop down to a relatively great degree below the machine, there might be a tendency for the descending molds to strike against the assending molds or. or the chains to swing laterally and strike the sides of the machine.

I avoid this difficulty-by using a stirrup M whose cross bar'77 is preferably weighted and whose upwardlyextending legs are .out-

side er the carrier chains; The upper ends or said legs are provided with inwardly extendingstuh shafts; upon which are journaled the rollers 78 which ride upon the side chains and thus support the stirrup. This provision lengthens the chord of the arc of the depending chain loops and prevents the v molds interfering with each other, and the .weight of the stirrup keeps the chains and molds in proper vertical alinement. The roller riding upon the'chains prevent the stirrup mounting upwardly through the movement of the chains toward the discharge chute.

My novel method of mounting the machine in connection with the the glass tank or other container of molten glass is particularly advantageous. The machine tank in such a manner that the gatherer stands facing the tank with the machine in front of him so t at the required movements, to introduce a supply of glass and deposit such supply into the waiting mold to be sheared fromthe purity, are reduced to a minimum. Thus the the ring 45 up or down in the his punty into the furnace for is mounted on the front or extension of the lower cover plate E is provided with stout hook members 79 which hoolrover a horizontal beam or support 80011 the front of the glass tank N. Thus the machine which is of small compass and compact construction is supported in place with the mold into which the glass is to be placed directly in front of the ring hole 81. I prefer to provide a sheet metal shield which is tached to the front of the furnace about the opening-81 and whose sides and top are inclosed, said shield extending over the machine table K and the station assumed by the mold for the gather operation. The top of said shield is curved downwardly and forwardly to protect the face of the gather-er, who stands at P, Fig. 13, and is provided with a vertical slot 82 through which the gatherer inserts his punty to obtain glass from the tank and deposit it in the mold. Thus the gatherer is protected from the heat and glare of the furnace and the glass is prevented from chilling when it is placed in the mold. The gatherer can work much more rapidly withthis arrangement as he does not need to move his feet and the move ment of the punty is reduced to a minimum.

The cover plates may be provided with oil inlet ports 88, closed by screw plugs, so that grease or oil may be introduced between the cover plates and the side frames, thereby providing a bath of lubricant in which the moving parts of the machine operate. As shown in F ig. 3, I prefer to form one or more of the bolts 1, which hold the side frames ito theblock B, as hollow cylinders whereby a cross equalizing passage for lubricant between the two sides of the machine is formed, for the better circulation of the lubricant.

The advantages of my improved machine are manifold. Among them may be mentioned the following The machine isrelatively small and very compact. It is easily portable and therefore can be shifted from one furnace or tank to another as factory requirements may dictate. Its actuating parts are inclosed in baths of lubricant, thus facilitating operation and reducing wear. Molds for producing any character of pressed ware may be used in the machine-and the number of the molds mounted in the carrier may be reduced or increased without otherwise changing the machine or impairing the efiiciency. The method of mounting the machine is such that a single operator or gatherer is required, no boys or assistants being needed. If mechanical gathering means he substituted for manual gathering the operation of the machine becomes entirely automatic. The pressing mechanism may be adjusted for the proper forming of the glass in any character of mold, whether shallow or deep.

The molds remain upright throughout their travel, except when upset by the discharge the molds enables the molds to be at all times accurately spotted under the pressing mechanism and preventsunnecessary wear.

on the carrier chains.

Although, for the sake of clearness, l have minutely described the. embodiment of the principles of my invention illustrated in the drawings, I do not limitniys'elf thereby, but claim broadly:

1. In a machine for manufacturing articles of glass, the combination of forming means, a carrier. intermittently revolving in a vertical plane beneath said forming means, and a plurality of molds pivotally mounted on said carrier and adapted to be presented in turn to said forming means, the pivotal axes of said molds being above their centers of gravity whereby said molds normallyre tain their upright position.

2. In a machine for manufacturing articles of glass, the combination of forming means, a flexible carrier intermittently revolving in a vertical plane beneath said forming means, and a plurality of molds pivotally mounted on said carrier and adapted to be presented in turn to said forming means, the pivotal axes of said molds being above their centers of gravity whereby said molds normally retain their upright position.

8. In a machine for manufacturing articles of glass, the combination of forming means, a carrier intermittently revolving in a vertical plane beneath said forming means. aplurality of molds pivotally mounted on said carrier and adapted to be presented in turn to said forming means, and means intercepting the path of said molds and adapted to upset them in turn for the discharge of their contents, the pivotal axes of said molds being above their centers of gravity whereby said molds automatically right themselves after the discharge of their contents.

4. In a machine for manufacturing articles of glass, the combination of forming means, a flexible carrier revolving in a vertical plane beneath said forming means, a plurality of molds pivotally mounted on said carrier and adapted to be presented in turn to said forming means, and means intercepting the path of said molds and adapted to upset them in turn for the discharge of their contents, the pivotal axes of said molds being above their centers of gravity whereby said molds automatically right themselves after the discharge of their contents.

5. In a machine for manufacturing articles of glass, the combination of forming means, a horizontal support beneath said forming means, a flexible carrier, intermittently revolving in a vertical plane, traversing said support, and a plurality of molds pivotally mounted on said carrier and adapted to be presented in turn on said support to said forming means, the pivotal axis of said molds being above their centers of gravity whereby said molds normally retain their upright position during their travel.

6'. In a machine for manufacturing articles of glass, the combination of forming means, a horizontal support beneath said forming means, a flexible carrier, intermittently revolvingin'a vertical plane, traversing saidv support, a plurality of molds pivotally mounted in said carrier and adapted to be presented in turn on said support to said forming; means, and means intercepting the path of said molds beneath said support 7 adaptedto upset said molds for the discharge of their contents, the pivotal axes of said molds being above their centers of gravity whereby said molds automatically right themselves before mounting said sup port.

I. In a machine for manufacturing articles of glass, the combination of forming means, a pair of endless chains revoluble in vertical planes beneath said forming means, a plurality of molds mounted on said chains and adapted to be presented in turn iLO'SELlCl forming means, a power driven reciprocating member, and push rods mounted on said member and adapted to engage and revolve said chains intermittently.

8. In a machine for manufacturing articles of glass, a horizontal support beneath said formingmeans, a pair of endless chains revolubly mounted in vertical planes, the upper portions of said chains traversing said support, a plurality of molds pivotally mounted on 'saidchains, a power-driven reciprocating member, and push rods mountedon said member and adapted to engage and revolve said chains intermittently.

9. In; a machine for manufacturing articles of glass. the combination of a support, a cross-head slidingly mounted on said sup port, a pressing plunger, an annular plun- -,ger follower, and a pair of concentic helical springs having their one ends hearing against saidcross-head while their other ends bear against said plunger and said follower, respectively. I p

V 10. In a machine for manufacturing articles ofglass, the combination of a support, a cross-head slidingly mounted on said support,a spring plate mounted on said crosshead,a plunger holder extending through said plate, a plunger and a plunger follower mounted on one end of said holder, a nut screwed on the other end of said holder against said, plate, and a pair of helical springs interposed between said plate andthesaid plunger and follower, respectively.

11. In a machine for manufacturing articles of glass, the combination of support,

a cross head slidingly mounted on said support, a spring plate adpistably mounted on cross-head, a plunger holder r n s0 owed on 152. in a machine cles of lass,the combination of asupport, a s 11 Ml slidingly mounted on said support, a spring plate mounted on the cross head, a plunger holder extending through C g.

plunger anda plunger follower one end of said holder, a nut the other end ofsaid holder said licucalsprings coiled about said holder between said spring plate and said plunger and holder, respectively.

a cross-head slidingly mountedon said sup port, spring plate adjustably mounted on said cross'head, a plunger holder extending through said plate, a plunger and a plunger follower mounted on one end of said holder, a nut screwed on the other end of said holder id. in a machine for manufacturing arti cles of glass, the combination of a support, a (rical cross-head. slidingly mountedon SulQl support, an annular spring plate mount.- ed in the bore of said cross-head, a plunger holder extending through said plate, a plunand plunger follower mounted on one end of said holder, a nut screwed on the other end of said holder against saidplate, a1 1 a pair of concentric helical springs coiled about said holderbetween said plate and said plunger and follower, respectively.

in a machine for manufacturing articl s of glass, the combination of a support, a cylindrical cross-head slidingly mounted in said support, a split spring ring inserted in the bore of said cross-head, aplunger holder extending through said ring, a plunger a plunger follower mounted on one end of said holder, a nut screwed on the other end of said holder againstsaid ring, a pair of concentric helical springs coiled about said holder and bearing against said ring and said plunger and follower, re-

spectively, and means for expanding said ring to lock said ring into fixedengagement plate, and a pair of concentric In a machine for manufacturing articles of glass, the combinat on of a support,

extending said plate, a plunger and a plunger said cross-head, a pair of cams on said shaft, and eccentric straps mounted on said cams and pivotally attached to said cross-head.

17. in a machine for manufacturing articles of glass, the combination of a support provided with a longitudinal aperture, a cross head reciprocating in said support, a pressing plunger depending from said crosshead, a plunger follower depending from said cross-head and surrounding said plunger, said follower being provided with a fluid passage, and an inlet pipe and an outlet pipe, extending through the aperture in said support into the said passage of said follower.

18. in a machine for manufacturing arti else of glass, the combination of a pair of spaced apart side frames, a mold carrier revoluble in a vertical plane between said side frames, forming mechanism reciprocating in a vertical plane between said side frames, a driven shaft journaled transversely in said side frames with its ends protruding therefrom, operative connections between the ends of said shaft and said carrier and said forming mechanism, r spectively, and cover plates inclosing said con nections.

19. In a machine for manufacturing articles of glass, the combination of a pair of spaced apart side frames, a mold carrier revoluble in a vertical plane between said side frames, forming mechanism reciproeating in a vertical plane between said side frames, a. driven shaft journaled transversely in said side frames with its ends protruding therefrom, operative connections between the ends of said shaft and said carrier and said forming mechanism, respectively, cover plates inclosing said connections, shearing mechanism, and operative connection between one end of said shaft and said shearing mechanism, said last named connection extending through an oil-tight,

bearing in the cover-plate.

20. In a. machine for manufacturing arti cles of glass, the combination of a pair of spaced apart side frames, a mold carrier revoluble in a vertical plane between said side frames forming mechanism reciprocal in a vertical plane between said side frames, a shaft journalcd transversely of said machine having its ends protruding beyond said side frames, operative connection be tween the ends of said shaft and said carrier and said forming mechanism, respectively, and a lubricant bath for said operative connection.

21. The combination with a glass tank provided with a ring hole, of glass forming machine, supported on the front of the tank and having a carrier revoluble in re lation to the machine, a plurality of molds mounted on said carrier, and means for revolving said carrier intermittently to bring said molds in turn in front of said ring hole to receive molten glass prior to the forming operation.

22. The combination. with glass tank provided with a ring hole, of a glass forming machine adjacent to said tank and having a revoluble carrier, a plurality of molds mounted on said carrier, means for revolving said carrier, intermittently to bring said molds in turn in front of said ring hole to receive molten glass, and a shield surrounding said ring hole and extending outwardly to cover the molds when the latter are in the receiving position.

23. The combination with a glass tank provided with a ring hole, of a glass forming machine supported on the front of said, tank and having a revoluble carrier, a plurality of molds mounted on said carrier, means for revolving said carrier intermittently to bring said molds in turn in front of said ring hole to receive molten glass, and

shield surrounding said ring hole and extending outwardly to cover the molds when the latter are in the receiving position.

2%. The combination with a glass tank provided with a ring hole, of a glass form ing machine supported at the front of said tank, and a shield over said ring hole and extending forwardly from said tank over said machine to protect the gatherer from the heat of said ring hole.

25. The combination with a glass tank provided with a ring hole, of a glass forming machine supported at the front of said tank, and a shield over said ring hole and extending forwardly from said tank over said machine, said shield being provided with an aperture at the front for the insertion of the gatherers punty.

Signed at Swissvale, Pa, this 12th day of December, 1918.

.WILLIAM J. MILLER.

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