US1655391A - Ments - Google Patents

Description

K. E. PEiLER Jan. 3, 1928.

METHOD OE AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5, 1919 a sheets-snaai 1 K. E. PEILER METHOD 0F AND APPARATUS FOR FEEDING MOLTEN GLASS Jan. 3,- 1928.

Filed May 5, 1919 8 Sheets-Sheet 2 .3Q NQ @Y n Nv @n @ww Y Jan. 3, l1928.

K. E. PEILER METHOD OF AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5, 1919 di faz/672507. 2755/1295745? Jan. 3, 1928.

K. E. PELER METHOD 0F AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5, 1919 8 Sheets-Sheet 4 A21-fifa.

Jan. 39 1928.

K. E. FEHLER METHOD 0F' AND APPARATUS FOR FEEDING MOLTEN GLASS Filed may 5, 1919 8 Sheets-Sheet 5 a SQ, Y

Jan. 3, 1928.

K. E. PEILER METHOD OF AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5, 1919' g8 'Sheets-Sheet 6 m u@ k@ Jan; 3,

K. E. PEILER METHOD OF AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5, 1919 8A Sheets-Sheet 7 j?? 45. 737.441 Fay-m Fay 45, FZ; 47 @g4/6,

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5.. w w m W Jan. a, 192s. 1,655,391

Vw\K.Q=EILER METHOD OF AND APPARATUS FOR FEEDING MOLTEN GLASS Filed May 5. 1919 8 Sheets-Sheet 8 F22 22. F22. 22 E; 25. F2722 Patented Jan. 3, 1928,`

Kennis. rninnnl, or tvns'r nnnrrenn, oenrnno-ricnn Assmann, BYjMEsNE Ass'rem Mantes, lro nnnrnonngninrrnnnostrani', er nanrronn, ooniinorronn A 'oonrof aerien or ':onnnurnnnl Mnrnon on Ann nrrnnarus non. nnnnrne inoLTEiv GLASS.

Application filed May 5,

This invention relates to the segregation and separation of molten glass into mold charges. lt has for itsobject the production et mold charges oi suitableorin and hornegeneity to be mest advantageouslyused in glass shaping machines, and it comprises a method and `apparatus whereby such mold charges may be preformed while segregating them from a supply oi molten glass in a turf nace or contain.er,and before bringing their external surfaces Linto contact with relative ly 'cold molds vor other supporting or i`orining means, andl whereby theiorm and size of such. charges may be controlled and varied at will, and without destroying their uniform consistency by the unequal chilling action oi'external or relatively cold molds or other supports or forming means. y

lt is aproininent characteristic oi? ymolten glass,that when it issuesor is withdrawn from the Vfurnace or container, and is exposed to the colder'surroundings outside et the c furnace, it acquires a partially chilled surface or skin, known in this art as enamel. This enamel is coldest and stiivest on its outersuriiace7 and gradually merges into the hot and `more plastic interior of the glass `When a charge oi? this glass is delivered to a mold, anyk undue stretching7 rupture, or in'liolding of the enamel will cause defects in the article being mane, Any trapping et air by the glass, due to lapping or folding et the surface et the glass as it is deliveredto the molds will. also cause defects, To avoid these defects it is desirable to pre-form the mold chargaibeiiore itV enters the mold, so that its external contourA will closely appro imate the interior contour ofthe meld Walls, `or ,at least thatA portion foi: the mold which receives the gather. This is ot special im- 'portance in the making of blown glassware. A mold vcharge which ris to form a narrow neckedv bottle,ior example, should be preformed as ail-elongated cylinder with a tapering end., so that its entire surface mayas nearly as possible contact equally with the mold walls `ttor the Vsame length of` time. Unequal contact of diierent portions ot the surface. or unequal duration `of contact et the difierent portions tends to pronuce an 191e. serial No. 294,792.

unsynnnetrically chilled and enameled blank or parison, which will not blow outluniformly, because the hotter portions willstretch more than the cooler portions' resulting in apoor bottle having a wall of uneven thickness. j y i j These conditions have evidently been recognized to some extent by the hand gatherer, practicing his ancient art, who yby mar-.ipulation of his pontil or gathering rod duringL the gathering operation pre-formed his gather or mold charge, as -wellhas he could by this primitive method, to Vfit the mold7 or that portion of the mold that receives the gather, thus attempting to avoid undue deformation of the mold charge whenL deposited in .the mold.y On the other hand, these conditions have received little or no attentionk in the gathering or feeding oin molten glassV as heretofore practiced by machine or other automatic methods.

The present invention accomplishes this preliminary shaping of mold charges ywith greater ease and exactness than heretofore by the adjustable operation of suitable impelling means coacting with an orifice below which'the mold charges aregaccumulated and suspended, and it employs ,the elongation of the suspended chargesincontrolling their shape. It also makes use of coaction between the impelling means and suitable severing means, convenient adjustments being provided to allow control of the severing means and impelling means as to relative time of operation, speed and position. i

vVarious adjustments oi' the impelling means aswell as of the severing inea-neto control and vary the form of the 'gathers and mold charges during continuous operation` are herein'described as operating adjustw ments7 that is they may bc made while the machine is in operation, thus allowing the maintenance of the flow of glass and the uniform heat conditions which are so: essential in proper operation ofkglass feeding apparatus; Stopping of the machine to make adjustments .would .stop'the flow of glass and would have the eiiect of al lowing the glass'rto chill near' the outlet and of changing the heat'conditions. As a result the operating conditions would be changed so that the iunnediate effect oi the adjustments could not be observed and employed as a guide in making these adjustments. In the present invention, on the other hand, these adjustments may be made while the apparatus is operating so that the progressive eii'ect of these adjustments maj,7 be observed while they are being made, thus 'giving better control oit the operation.

ln the accompanying drawings Figure 1 is a general iront elevation ot the apjiiaratus with the lower part or base omitted.

Fig. l is a side elex'ration ot the niacl'iine, shown partly in section. made approximately along line 2-2 ot Fig. l, with the shear mechanism omitted, and,showing the glass i'urnace and its conduitlor the molten glass.

Fig. 3 is a vside elevation showing some ot' the shear mechanism.

Fig. is a front elevation, showing the hase out the machine.

Fig. 5 is a plan view in section. along the line 5 5 or" Figi 7.

Fig. 6 is a iront elevation takenpaitly in section along line 6-6 of Fig. 7 of the center portion of thev machine and shows the impeller, outlet and shear carriers, with the right hand shear in place and the lett hand shear omitted." f

Fig. 7 is a side elevation taken' in section along the center line of Fig. 6 with the shear mechanism omitted and shows the impeller drive connection and adjustments ior stroke and position. f j

Fig. 8 is a front view ot the right nand shear carrier and shear blade. Y

Fig. 9 is a plan view of the parts shown in Fig. 8.

Fig. 10 is a plan view in `section taken on line 10-10 of Fig. 8.

Fig. 11 is an end elevation in section taken on line 11-11 of Fig. 8.

' Fig. 19.` is `a sectional elevation taken through the right hand shear lever pivot et Fig. l, and shows the :n'ljustn'ient ior' shear cuttingl speed.

Fig. 18 is a sectional plan along line 'L8-13 oit Fig. 12L

Fig. 111A shows an yelevation oi the inioellcr driving" cani with its driving gears. 'Fig'. 15 a sectional elevation i5 i5 @if Fig. i4. r

Fig. V1G is a'sect-ional elevation lt-lot Fig. 14:.

`l3`ig.` 17 is a bottoinview ot a section on line 17-17 of Fig. 14.-. A

Figs. 18 and 19 are elevations of the impeller cam partly in section similar to Fig. showing extreme adjustments.

Fig. Q0 shows a side elevation ot the worm adjustment for "the impeller cam.

on line on line Figs. 21 and 22 show different shapes of cani lobes `for the impeller cam,

r2; Leanser Figs. 23, 24, 25 and 26 show sectional elevations ot various types of molds with charges oiL glass in them.

Figs. 27 to 31 inclusive are sectional elevations to Villustrate steps in the formationV .f in the formation et the incid vcharge .shown in Fig. 26.

Figs. 39 and l0 illustrate iu section the action of reducing the neel; ci' a suspended gather be'i'ore severing.

Figs. il to -l inclusive are elevations, partly in section, showing steps in the torniation of a more attenuated column oi glass issuing as a stream.

Figs. #t6 to i-9 inclusive show various forms of impellers.

Figs. and 51 show diagrammatic rear elevations ot the right hand shear cam and roll.' j

The invention is herein shown embodied in a machine having the necessary mechanical movements and adjustments, and cooperating with a conduit projecting from a glass furnace, from which the molten glass is thus delivered in mold charges to an associated molding or shaping machine. i

The molten glass Hows-from the glass turnace i through a channel or concuit 2 (Fig. 2) to an outlet 3. it is there acted upon by an impeller 13 mounted for vertical movement, and provided'with various adjustments. ,its it issues periodically in regular cycles irom the outlet, it Jorms succes ve gathers from which mold charges are severed by shear blades l reciprocating below the outlet. The separated mold charges tall upon a inoistened chute 5 and slide upon it to the molds 6 mounted on the table 7 ot the associated shaping machine (Fig.

The channel 2 is made ot refractory material surrounded on the bottom and sides by vheat insulation ll. fit the outer end ot the channel an outlet spent 12,1'hc intr-rior of which shaped so jas to coact with the impcllcr 125. :This spout is held in an iron tra-nie or cas-e 14, which also asa rctaincr for the insulation 11, the spout being surrounded with insulation, except `at the outlet 3.

The bed 15 is carried bythe same Jfoundation which supports the base otthe machine.

- It serves to support the channel 2 by vmeans ot intermediate retractorj,7 supports 1() and .carries two brackets 16 which are clamped ll,r the inet'al lplate traction et vthe lchannel and spout. The

brackets alsocarry ren'iovableidrip `pans 20 'the channel another refractory cover 25 Y 12 is an outlet ring (Figs. 6 and 7) inadey of refractory material.

'loriiied so aste retain heat insulation lll Whichis covered rby a nietal plate 26 to keep it iiiiplace. j

The channel and spout are heatedby suitable means, such as a gas burner 27, which Vproiects through the side WallA block 30.

fhis burner is provided with `air and gas valves 81 for A"regulating the Haine, which partly ylills the space over the inoltcnr glass.

The products of combustion are carried oft by the .fire brick stack 82 carriedon refractory lintels 33, which bridge the ychannel and .are separated at their ends by retractor,`

At the upper end ot the stack is a blocks. dainper 34'; carried on a Ipivot B'iand adjustable through an' arni 36, and connecting rod 37 having' a handle at its outer lend and provided with notches 38 engaging with a stop 10, thus allowing, the danipei' to be set at any desired opening. By appropriately adjust-- ing' the burner and dainper the proper teinperature inay be maintained in and overthe channel and spout. The insulation acts to conserve the heat, and the radiation troni th rear assists in heating the outlet end, thus tending,` to maintain a uniiorin temperature throughout. i j

A gate il for regulating 'the glass flow is suspende-dby linksy 42 from arins Ll?) vfastoii the shaft 44 'at each end thereof.

ot the gate. A screw 4-7.,ca-iifj,iiiig a hand Wheel bears against anextension 5l o't the right hand gate arin (t3, thus allowing' the position of tho gate `to be adyusted by turning;l the hand Wheel 50. The glass siii'- acc in the tuinace l is preferably inamvtained at a higher level than that desired inr the spout l2 and thelevel or head desired in the spout inay be maintained by adjustment of the gate. f

Clainped against the outlet block or spout This ring is carried in a nietal holder hinged by an open sided bearing' 5a to allow ready removal, on a pivot and is drawn up against an abutineiit by screws "56 (Fig. 5). Between the outlet ring and the spout is a packing` 5?v oit Irefractory clay. The object of this construction is to allow tliesize ci the outlet to v Y rifhe right hand aiiny 48 bears a pointer i5 regis lei-ing with a scale 415 to indicate the setting;

be chaiieed at will b easvv vandl ra uid change L D y L of the outlet rings. ln practice an outlet ring of the size desired is placed in the holder and covered With suidcient plastic` clay toV torni the packing' 5i. rlhe holder is then hooked over the pivot 'and drawn up agaiiistits abutment,squeezing the plastic packing into place.

The traine et thc inachin'e is carried byV the base 58 Figs. 3,4 ande) and surrounds the channel and spout. The base carries coluinns GO 'with suitable bearings at'their upper ends to carry the drive shaft (il and pivot shafts. The drive shaft 'iay be vdriven lby a pulley G2 l) as shouf'n and Y niay be connected to a shaping inachine by any suitable ineans for synchronizing its The. shaft Glfcarries cains 63 `Stor driving thev operations with those oit this'inachine.

shears and serves as a pivot for the iinpeller cains.

The shcar'blades fare notched as shown in Fig. 9.

This allows theni to enclose the glass and to constrict it on all sides as Well as to cut it. For this reason they actto separate the glass partly'by'constriction and Sli) partly by cutting, thereby iniiiiii'iizingi the shear inarlr on the severed glass.

The .J iear blades i are fastened to shanlrs 6i which' are carried in adyustable heads or 'holders'ta (Figs. tl, t), l0 and ll, Which'show the right handY holder), by inea-ns oit which the bla-des inay be adjusted up, do'ivn and sideivise relatively to each other and to the outletB, so 'as to sever the glass at the dek sired position and to operate to the best` advantage.y The` shank 6ft of each blade is removably held in af vertical slide 66 split in its loiver portion at 67 (Figs. 10 and'll) and clamped by means oi the clainp screws ,Y r 1 ,n 1 i0. Tiie vertical slide 66 iits a guicieway on Uitl across slide 7l as shown in Fig. l() and inay be adjusted up and down by ineans oit the adjusting screw Z2 by its hand Wheel 73, The slide (SG may be ciaiinped in placefifn its ,Quideivay by the screw M and clainprTFi.

'the cross slide 7l, 'which carries the vertical slide and its adjustment iits in a giiideway 78 (Fig. 8), and may be clau'ipcd in place by the screw 76 and clainp 77, thus allowing the shear blades to be adjusted ffor transverse position and clainped to place. The

shear blades inay be adjusted endWise byk moving their shanlts in and out in their holders, either for the proper initial setting or for a ,controlling adjustment although a preferable operating adjustment is provided for this purpose. .In this Way the shear blades may be inoved in three direci tions so as to 'bring' thein into proper rela-y tionship to the outlet and proper alignment with each other.

the proper cutting` alignment bet-Ween theni n To move the severing plane to a higher or lower level, both shear blades 'are adgusted up or down as desired,

kbeing` maintained by turning both hand wheels 73 `the same amount'.l

rEhe shear holders above described are carried on the ends et the carriers 80 guided between grooved guide rollers 79 pivote-d on the columns 60, and are vprotected ly the guards 81 projecting from these columns. The carriers S are moved toward and away from each other by means ot' levers 82 carrying attheir lower ends rollers 83 which engage with slots 84C in the carriers.v rlhe shear llevers are pivotally mounted on studs and Slcarried on the columns 60. The

upper ends et the shear levers are provided ot the machine by moving the hand leverY 91 to the position shown .in Figs. 3, l and 5.

` This rocks the shaft 92 and transmits the motion to shatt .)Bby means ot ybevel sector 9% and bevel `gear 95.l This shatt'carries p two cams 9S againstl which bear therollers 9'? carried by the slides 08 so that .the rochinfr o the shaft 93 raises or lowers them.

Y rEhesc slides are connected ley/means oi connectingrods 100 with the arms 101 which are pivoted onthe studs 85 and 86 with the shear levers 82. These arms bear against the lower side of the shear lever extensions In this way the shear levers'may be positivelyl held against the action ot the springs 90 to hold the shears inactive in their retracted positions while the cams continue to rotate. By reversing`v the position of tie hand lever 01, the arins 101 will be swung down and the shears will be` allowed to resume normal operation. The hand lever 91 may be locked in position by means et the latch 103 worked by a knob v104.

For controlling the shape ot the lower ends ot the gathers. while the machine is in operation, an operating adjustment is provided Stor increasing or lessening' the rapidity with which the shearblades cut through the glass, by using' earlier or later portions oi the contour ot the shear cams 'ab 50 and rlhcse cams are shaped to ,Q 'iwc a irradnally decreasinrr speed to the shear 'ues toward the inner ends ot their strokes. so that by vary/'ing' the point in the path ot the slides at which severing begins the severing; speed may be varied. For this purpose portions et the pivot studs 85 and S6 .which carry the shear leifers 82 are made eccentric `to the portions which are supported in the trame7 the eccentricity et one pivot stnd 86 being` set downwardly 12) and the eccentric portion ot the other pivot stud 85 being set upwardly. This enables these eccentric pivotal supports tor the shear levers to be adjusted toward or awaytrom each other. TWhen adjusted toward each other the shear blades meet and sever the glass at an earlier period. at a time when the respect-ive cani rolls 87 are in Contact with a steeper or more inclined portion ot the cam contour, as shown in Fig. 50, so that he seif'ering,` operation-is performed quicker7 and therefore in sh rter time7 thus making a blunter ended gather. On the other hand, when the eccentric portions of the studs 85 and S0 are turned outwardly, the shear blades meet and sever the glass at a later period in their stroke, at which time their respectire cam rolls 87 en?` 5e with the less inclined contours ot thesli ar cams G3, as shown in Fig'. 51, thus severing the glass in a longer time, and therefore more slowly, and making a more pointed end on the gather. The dot-anddash tangent lines 105 in Figs. 50 and 51 show the relative steepness of the cam contour at the two cuttingpoints. The pivot studs 85 and 86 tor the shear levers are turned to utilize their eccentric movements by means ot levers 106 (Figs. 1, 12 and 13), which are connected by a rod i7 so as to turn both pivot studs at the same time and to the same extent; but on account of the oppositely arranged eccentricity ot the studs, move/the pivotal peints ot the levers in opposite directions. The connecting` rod 107 may be adjusted tor length bj; a` right and lett hand thread-ed nut 10S. @ne of the levers is provided with a handle 110 tor turning the eccentrica` The scale 111 is provided to indicate the extent to which the eccentrics are turned. rEhe scale is read in connection with the pointer 113 attached to the column and may be clamped in any desired position by the screw 112. y

The shear blades are cooled between successive severing' operations by means ot water sprays 21 (Figs. 1 and 6), supplied by pipes 1111- and regulated by valves 115. The water from the sprays strikes the blades in their retracted positions and is tinally caught by the drain pans 'from which the water is drained away.

The impeller lil for t' i.; and cmstroh the extrusion andy toriiiation, oi' the fathers is nia-de ot' re't'ractorv clay and is iided iter .'ei'ticai mor tinto oi' through the outlet ring ina line coma-nitric with this ring by the guide sllat'ts 110 and 11T sliding in bearings 120 and 121 respec. tively which are 'termed in the spout case (Figs. 2, 6 and 7). Theguide shaft 11T arries an arm 122 to whichY a split holder 123 carrying the impeller is detachably and adjustably secured by clamp screws 124 which pass through elongatedV holes in the holder 123 to allow it to be slid in and out on the farm 122. This arm 122 is clamped lilo f co

rrange et the impeller.movements.

yjustnien-t has been made.

to the shaft 117 by a. screw 1,25 allowing it to be swung about the shaft. In this way the impeller holder' 123 may be slid radially in and out frointhe shaft 117 or swung about it and clamped in position to bring the point ot the in'ipel'leiinto alignment with the outlet, thus compensating vfor warping of the impeller or for variation in diii'erent impellers.' The shaft 117 also carries an arm in which the guide shalt 116 is astened. The lower end ot this shaft comes opposite lthe scale127 fastened to the spout case. This kscale is graduated to indicatevthe `position ot' the lower end of` the iinpeller relative to the lower side ot-the outlet ring.

The impeller is clamped in its holder 123 bv screw 128, and may be quickly eX- changed tor another impeller'ol any desired shape. Various shapes of impeli'ers for diftrferent effects are shown in Figs. 15 to 118 inclusive. Y

The iinpcller and its carrier are suspended by the connecting rod 130 and its pivots 131 and 132 from the lever 133 pivoted at its hub134` on the shaft 135. rThis lever carries an adjusting screw 136 bearing a hand wheel 137. The end of this adjusting vscrew bears against another lever 138 also q'iivoted at its hub 111() on the shaft 135, so

that both levers are guided side by side between lixed collars. its upper end a stud.1d1carryingra cani rollV 142 which is held against the iinpeller cani shown in outline at 143in71l`ig. 7 by the weight ol the impeller and its carrier. The iinpeller cam thus governs the rise and fall of the impeller. By turning the hand wheel 137 and revolving` the adjustino` screw 133 the relative angular position ot the two lcvers 133 and 138 may be varied. The eiliect of this is to` raise and lowerthe working The impeller inav'aisobe held inactive in itsI upper position by turning` the latch 14111 carried by the lever 133 over the projectimiil 5 carried by the shatt 145.

.ln addition tothe height adjustment abovedescribed, the connecting rod 130is made adjustable by means ot a turn buckle,

provided with right and lett hand screw threads at its opposite ends, and connecting the upper and lower portions oli the connecting rod. Check nuts are provided to clamp the parts tightly after the desired ad- By turning the turn buckle, the connecting rod 130 may be lengthened or shortened and the working range of the impeller lowered or raised, 'as

desired. This adjustment'may be used in' place oi, or in addition to the hand wheel The lever 133 has aty tot* various forms ot gathers by operating the severing means only. p

The length. o1 stroke of the iinpeller may be varied sliding the pivot 131 orP the connecting` rod 130 in the slot 147 provided' in thelever 133. This changes'the effective length ot the lever; .This pivotj131 is provided with a nut by means of which it mayy be clamped in any desired position as indicated by graduations along the vslot 14:7 to

give the iinpeller thedesired length ot' stroke. l

The in'ipeller camis composed of several paiftsias shown inFigs. 15 to 19 inclusive.` The sleeves and 151 are loose on the main drive shaft 61 and are provided with bevel gears 152 and 153 respectively at their outer ends, and with ianges 151- and 155 at their inner Iends. These flanges form part of the cam surta-ce andA also hold removable cam lobes 156 and 157 which serve to govern the rise and tall et the iinpeller respectively.

The' lobe 156 which raises the iinpeller, is' carried by the right hand flange and is removably secured to it by clamp screws 153 `which enter the slots k therein andjserve to locate the lobe. The lettl hand flange 154 f carries the` lobe 157 which governs the tall ol the impeller. .Thislobe is also detachably secured to the liange 15d by means of clamp screws 161 which enter the slots 162 therein and thus locate the lobe. By this arrangement the two cam lobes can be revolved about the .shaft independently ot each other so that their angular position relative to each other and around. shaft may be varied within certain limits. AFor instance' Figs. 111 to V17 inclusive show thelobes set 17% degrees apart, while k Fig; 18` shows them set close together. Fig. y1.9 shows them sepr-irate'd to a maximum of -10 degrees, a pin 159 being provided to prevent separating them beyond the allowable limits.

Theinain drive sha'l't 61 Arevolves in the direction of the arrow shown on the drive pulley G2 (Fig. 1) and drives the bevel gears 4133 and 164C which are fastened to it. These (Fig. 20), which are revolubly mounted on the main shaft Gland provided with worin wheel sectors 170.k gaged by worms 171 (Fig. 20)` carried von shaits 172 which are provided ywith hand wheeis 173 and 174 respectively By revolving the vhand wheels the .pinion holders 167 arel rotated about the shaft 61 thus mov- These sectors arev en`- izo vided with gear teeth meshing ing the'sleeves 15()y and 151 relative to the driving' gears 163 and 164;, respectively. This has the eiect of angularly advancing or retarding the sleeves 150 and 151 bearing the cam lobes 156 and 157. In this manner the lobes may be set to act at any desired time relative to the shears and to each other.

`By turningthe right-hand hand wheel 174 the right hand sleeve 151 is advanced or retarded, thus advancing or retarding the cam lobe 156 by which the iinpeller is raised. By turning'the left-hand hand wheel 173 the cam lobe 15?', which governs the tall et the impeller, is advanced or retarded. By properly turning both hand wheels thel same amount both lobes as a whole may be advaneed or retarded, correspondingly changing the'time of the iinpeller operations Vrelative to the time oi' the shear operations. ln this manner the various characteristics oi' the inipeller action may be varied, and its operating period maybe advanced or retarded relative tothe severing operation. For visibly indicating these adjustments of the iinpeller cams, the shafts 172 are pro- With teeth on the indicator dials 17 5 which register with the pointers 180.

loam lobe 156 relatively to the shear cams the iinpeller may be made to rise more rapidly during severing and by retarding' this lobe .the `iinpeller may be made to rise moreslowly .during severing.. This cam lobeinayl also be set so that the impeller begins to rise-after i the severing is partially orentirely coin pleted.` y

rlhe characteristics of the impeller stroke Vmay be still further altered by substituting other cam lobes which provide a rise or tall of any desired character. The cam lobes176 and 17( shown in 141g. 21, for inst-ance, give `a rise and tall extending over a longer period than those in Fig. 15. The lobes 178 and 179 shown in Fig. 22 give a quicker rise and fall than those shown in Figylf .These lobes are arranged so as to be readily changed yby simply loosening the clamp screws which are carried by the lobes, and substituting other lobes.

The chute 5 Vis formed of porous material such as carbon and is placed in a sloping position as shown in Fig. 2 with its upper end under the outlet 3 to receive the separated mold charges, and with its lower end -duce over the mold charging station of the shaping machine as shown in plan in Fig. The chute is .supplied with water through a 'flexible tube 181 which connects With a recess-182 (jig. formed in the upper end oi the chute. it valve 183 regulates the Water supply. Suthcient waterj is supplied to meisten the chute. `When the glass italls on the chute the water is turned to steam where the glass touches it, so that the. glass slides freely and rapidly down the chute on a tihn et steam and drops into the mold 6. The chute is supported on vert-ical pivots so mounted that it may be swung out ot or into the glass receiving position to interrupt or begin the delivery ot' the mold charges to the molds as desired. lilhen the chute is swung out, the glass drops through au opening in the base 5S into a suitablereceptacle.

ln operation the gate lll is raised to the proper point to maintain the desired head oil glass over the outlet and the machine is set in motion, reciprocating the impeller and the shears. "ihe inolten glass issues trom the v outlet under the combined influence ot' gravity and the action of the impeller, which times and controls its accumulation in gath. ers which are successively Lispended from the outlet ring anc troni the inipeller end: For each complete reciprocation ot the iinpeller there is a reciprocation ot the shears which sever a mold charge from each suspended gather. After each severing operation the freshly cut end or stub remaining below the outlet and forming the lower end ol' the succeeding gather, is moved upwardly or its downward movement is retarded by the action et the irnpeller.

By using appropriate sizes of outlet ring and ii'npeller and by proper setting ot the varions adjustments, the shape of the top, body, and lower end o'l the mold charge may be varied separately at wil as hereinafter (le-- scribed. i

The .size ot' the outlet ring-is chosen with relation to the general shape ot the body ot the inold charge, a smaller diameter outlet being used lor a long mold charge than for a short charge. For a nearly spherical charge a larger diameter outlet used than tor a longer cylindrical charge. The rela.- tion ot the diameter oi the gather to the outlet size depends partly on the speed of the machine and the viscosity ot the glass, as these influence the elongation and consequent reduction in diameter ot the glass column issuing from the outlet. ln general a higher sneed requires larger outlet than a slower speed does, while greater viscosity requiresa larger outlet than a lower viscosity would. v

rilie size of the iinpeller end dependsto a certain extent on the size ot the outlet used, since the iingeller and outlet coact to proeltects hereinatter described. The

lll!) lli) Cil

limpleinent were' not present.

maybe regulated by thc Agate, which deter-V mines the depth glass ovcr'the outlet. Raising the gate gives a, heavier charge and lowering it decreases 'the weight kot rthe charge. i j 1 Tl e inlpeller acts upon the glass partly by 1 disphu'euient and pzu'tly byy adhesion ot the glass' to it. f ln explanat ,n ot' the displace nient action, it is pointed out that, as shown by a comparison et 28 and 2S), for example, the inineller, when depressed as shown in Fig. 29,' constricts the annular lflow arca .inthe well, in the bottom of which is the outlet 58, with the resistance to iiow ot glass therethrough. `This increase ot resistance, in one aspect, rcsuits in decreasing the static head eliective'at the outlet to cause the issue ot glass from the outlet,l and hence would result in a dccrease et the rate ot' the i'low as the impeller moves'down were it not for the fact that the rate et the impeller movement may be so great that the downward displacingl action occurring in the well is stiflicient to canse a rate of extrusion ot the glass which atleast compensates tor the reduced tlow due to decrease otl effective static head. ifi-creaseddischarge due to displacement may atly' exceed the uorn'ial gravity iow through the outlet which vwould occur it the The displacing action oll the plunger is assisted'in accomplishing4 this increased rate of extrusion by the tact that', as the. area oit the circular tlo'w passage in the well and around the iuuiieller is 'decreased,` with the attendant iu reuse in the resistance to tio'w theref wouah, the proportion ot glass which is misplaced by the lowerend oil the impeller and u'hici'i llows through the outlet increases in comparison to that '..which moves upcardlv e Consequentl as the impeller mov'es downward it gives a downward or extrusion impulse to the glass issuing from the outlet. This ext 'usion impulse aids the gravity head at the outlet and increases the rate ot" discharge ot the glass. As the impeller moves upward itgives an'upward or intrusion 11npulse to tlieglassjwi'thin and belowthe outlet.y ylhis intrusion impulse 'opposes the glass within iand below the outlet, aisingg' it' u p to an' extent depending en-tlie kextent and strength of the impulse. rlt'he impeller also a consequent increase in` 'K only thev upper end ot the gather. increasiing the extent et the downward in'ipulse,l

Such

'furnishes part of thel support for the glass below the outlet, this support being Lgreatest when` the iinpeller protrudes below the outlet and less for higher positions et theimpeller. As the iinpeller rises it gradually w draws. this support, transterrin,g` more et the weight ol the suspended glass to the outlet. Jirnother effect et projectiifigV the im* peller'helow the outlet is to' enlarge the neel; ot tee suspended gather by the dispiacenient. This also increases the amount et support.

he downward or extrusion impulse ot' the iinpeller may be used to control the sh ne ot' the body and upper end ot the gather and itsI resulting' mold charge, This in'ipulse tends te increase the diameter ot' the suspended and'elongatiugl gli in proportion to the extent and strength ot the impulse. l'j, adjustintgl the hand wheel. 173 to ad vance the .cam lobe l5? the extrusion inipulse comes earlier which tends to increase the diameter oi the body ot the gather rather than the diameter ot the upper end only.

by retarding' theY impulse it tends to Acular 'e which may be dene by lengthening the inipeller stroke, tends to enlarge more ot the gather, tor instance both the body and the upper end. The strength of the impulse may be varied by varying the working position and size oi the impeller and by varying* thecharacter or" its downward stroke. lower position tends to vive a stronger iin pulse and vice versa. A larger or blunter impeller also gives a stronger impulse. By

A. i c

l changing the camilobe 15T the character and duration ot the downward stroke and thereltore oit' the extrusion impulse may be varied.

A faster downward stroke of shorter duration increases the strength et the impulse but applies it locally to a more limiten por i tion of the gather. The decrease in diameter ot tl e gatherdue toits elongation by gravity may thus be compensated Yl'or to any extent. l-lyshijiing the caml lol so as te increase or decrease the relative speeds of the down-- ward stroke at different parts ot this stroke a variety ot etiects maybe secured, allowing;l

,more varied'control ot' the shape ot the gather. ln this manner by use ot the pro per parts and by proper set-ting of the various adjustments the shape oi the body and upper end of the gather and its resulting mold charge may be varied.

By turning` the hand wheel 174C and setting' the cam lobe 156 toraise or reverse the gli adjacent to the outlet while the shears e severine, the u )ward or intrusion im Quise or l the impeller, coacting` with the constructingl Aand severing action ot the shearsniay be used to vary the shape ot' the lower end ot the gather and its resultant mold charge. The contour of lthe out glass surface may be nr. A.

more pointed stub is obtained.

varied by varying` thel cutting speed of the shears as previously described so that the shape of the stub and therefore ot the end oilE the succeeding mold charge may be controlled. By ha ving the shears out as quickly possible during the raising of the stub, a blunt ended stub is obtained. having them cut nere slowly, the glass forming the stub is raised the intrusion impulse, a The raising speed of the glass maj,- also be varied by advancing or retarding the intrusion impulse and tartine` advantage of the gradual increase in upward speed of the impeller during its stroke due to the shape ot the cam lobe 156. 'lhis is similar to the described mannero't varying the shear speed during severing. By

setting the cani lobe l5 l so that the pellcr doesV not isc until at'tcr the .shear blades to vary theshape ot' the gather above the part l`- iined by the severing operation. The initial formation of the stub by cooperation ietween the intrusion impulse and the shears has aheady been described. The further elong ion, dueto its weight of the stub and et the portion ot the gather above the stub may bevaried or its elifect may he compensated Ator by varying the character of that part oit tl'ie up stroke taking place after severing. For instance, by retarding the discharge ot' the glass the lower part ol the gather may be allowed to elongate before the remainder ot 4the gather is allowed te torni. 'lhis elongationdecreases the diameter ol the elongated part. lly diminishing 'he retar(i tion and allowing a greater dis- -iarce et the glass. the lowerrpart ot the lier may beiincreaseifl diameter. ln the length oi the inpellcr stroke the errent ol` the intriision impulse.v The strength ot this impulse may,"

proper shape ot stub while the remainderr ot the stroke may be made to give any de .colder shear sired retardation to the glass. rlhus the impeller might be held stationary Vtor a certain period, before eonipletiiug the remainder oil? the up stroke. This gives a. varied control over the shane ot the gather, and especially over the shape of its lower portion.

l(lue 'ell'fct ol'Y raising the glass below the outlet durmg and in'unediately a'ttcr the severing operation is to keep it out of contact with all parts of the shear blades except the `..nnediate cutting edges. This minimizes the chillii ot' the glass from the relatively blades and'also aids in keeping the blades cooler. lt is therefore preferable to operate this device with such adjustments as will allow the cut surface oi' the glass l". be raised Vclear et the shear blades during ind al'ter severing.

lly raising or lowering the shears they may be made to sever the glass at a higher or lower lerel, leavin@` a shorter or longer stub respectively. This length of stub has an influence on the length oi the gather. il stub tends to elongate the gather and ter stub tends to produce a shorter gi-.theiz This influence entends to the lowerv part ot the gather especially.

l'ly properly combining all the variable adjustments and allowing for or making use of the elongation and decrease of diameter oi' the gather during its accumulation and suspension, the shape oit the gather and its resulting mold charge may be varied to suit various types et molds to which the mold charge is to be delivered. Some examples o this variation are shown in liigs. 23 to QG which represent various molds containing mold charges which have just been delivered to them. FiO. 23 for instance, showsl a blank mold for a narrow neck bottle with a gradually sloping shoulder. It is a. mold ot the type in which the blank is vformed in an `inverted position, the formed ibi lil.

gradually toward the lower end, being near- Y ly a. trustum ot' a cone. This charge 'tits the mold closely, tending to form a good blank when the forming pressure is applied. Fig. 2li shows a press mold in which a'tumbler .is to be pressed. The mold charge for this mold is made chunky and compact, so as to settle down and till the lovverend of the mold as soon as possible after delivery. This allows the pressing plunger to act on the glass to the best advantage. Fig. 25 shows a blank mold for a wide mouth bottle of cylindrical form. The mold charge for this is made as nearly cylindrical as possible so that it fits the mold closely and quickly lls out the lower portion of the mold when the forming pressure is applied. Fig. 26 shows a blank mold for a narrow neck bottle havlli) ing an'abrupt shoulder below the neck. The mold cliaigeior this dii'ers from the mold charge shown in Fi 25 b havinU an elon- C b gation or point 190 Jformed at its lower endk to. lit theneckportion ot the mold.

'el are shownr diagrammatically and thel arrows beneath them indicate'the direction oi their motion. The cutting speedv oi'` the shears. andr the raising speed of the glass below the outlet are set so as to shapev the stub. to give theV desired shape to vthe end of, the gather ink connection with the elongationlater givenit. Thek shape of the out resulting trointhis setting is shown in Fig;

31 where the shears havejust completed severing. The shaper of this cut is the result of the molten ofA the shears combined 'with the-upward motion of the glass imparted by the; impeller moving upward duringthe cut. In Fig., 27' thestub fis rounded out at the point 191 andv is beginning to elongate. At the same time the entire stub has'been raised into the outletl by the upward motion of the impeller which isl still moving upward tor retard the glass. Tn Fig. 28 the impeller has reached its upper position and pauses there while the glass is discharging fromthe outlet to form the body of. the gather. `When the glass has assumed, the shape shown in Fig. 2 8 'the iinpeller starts to move down-4` ward, accelerating the discharge of glass through the outlet as it approaches its low' position shown. inv Fig. 29. Here the upper endl of the gather-,isshown swelled out by theaccelerated discharge ofthe, glass. The

iinpellerremains in thislow position 'for adeiinite time Awhile the gather elongates.

It then starts to rise and yhas risen to thea point lshown iny Fig. 30, when the shear The, severing 'then connnences and takes place' during the" interval .between Fig. E30-and Fig. 31 while the upward motion of the irn-` peller raises the glass to form the point blades make', contact with the glass.

192` of the stub by cooperation with the shears.

The steps in` the formation lof the mold charge shown in` Fig.. 4t are shown in Figs.

32 to 36.inclusive...y The impeller-'for the coinrpact charge desired-,is made blunter than in theA previous example, being like that shown inFig. 49. f The outlet'ring l52.is alsoinade,

, ot a larger diameter,` to` givethev necessary increased diameter of gather.'y The, shears` are settoseifer more, quickly so as to produce a stubf which isfblunt when;l rounded:

out, as` shown inFig. 32 where the impeller is moving upward. ln 38 the impellerf has reached its upper position and the body of the gatheiris discharging through the out# let.V The iinpeller then starts to move downward and" is shown still moving downward' in Fig. 34, having,vby its downward iinpulse, swelled. the gather as. shown. This swelling action is continuedl by the continued downward motion of the impeller until the shears contacty withv the glass as shown in F ig; The iinpeller cam' is set so that the impeller starts up immediately after reaching the position shown in Fig. 35. The severing operation takes place between the positions shown in Figs. 35 and 36. The eii'ect of 'the iinp'ellerv cain adjustment, both for character ofthe stroke and. for relative time, is'to continue swelling the gather unT til the severing operation starts and` then to allow a minimum time forV elongation of.' the gather `before orduringy severing so. that a shortfconipact spheroidalgatheris produced.

Figs. 37' and 38 illustrate the modifications' employed to obtain the mold charges shown yin Fig. 26. There amore pointedr inipelier isl used, the one shown in Fig. 46' being ein# ployed. vThe orifice ring is chosen of the proper size to form the body'of` thegather. The shears areV set lower down than in the lirst' example, nainely'Figs. 27 to 31, to form a longer stub. 'They are also set for slower cutting speedv than in. this first example and the inipellerl is set to rise later to give the shapes of' shoulder and point shown. impeller stroke is set so asto allow the properelongationrof this` point andy after thfsto give acylindrical body to ythe gatherby the proper amountl oi additional impulse to the glass. Y A The mold charge shown in Fig. 25 is like 'th'ebodylotthe' charge shown in Fig. 26, the

vpontV 1900i? Fig. 26`being absent. To formV this cl'iarge the .shearsv are set to cut more rapidly than for t-he charge" of Fig. 26.A Thel Figs. l1 to 4:5 inclusive illustratek the delivery o ni'old charges at such speed and ten'ipeiature that;y the glass 'issues yfrom the The..

iio

f Tt'jalso avoids the'severingjoa large columni outlet in la more elongatedcolumn breaking'k i into a stream between interruptions. Here the impeller is moving upwardly Vin Figs-44, i5 and{11havingkreached its upper position celeiate thetlo'w ot' glassandrcaclies the lower position in Fig. ll'3-ali`ter which it be withdraw or retract the stub of glass andinterrupt the downward flow as shown. It also tends to compact and round the end of the stream and to malre the mold charge as compact as possible under the circumstances. It thus aids in minimizing the difficulties due to lapping and folding of the charge when it settles in the'mold.

One of the advantages ofthe illustrated embodiment of the invention over that type of glass feeding machine which employs a relatively large Aiinpellei' or plunger, is in the more uniform heat distribution in Athe mold charge. This .desirableresult is obtained by the use of an impeller of comparatively small diameter which greatlyrreduces 'the screen or shadoweffect of a' larger impeller, which cuts ofil thev direct radiation of heat from the furnace in the rear to the front of the forehearth, and thereby produces a chilled zone on the front of the mold charge. By the use of a small impeller as described, this chilling of the glass is reduced to a miny imuin and to all practical purposes entirely removed.v I

The organized machine shown and described herein as a preferred embodiment of this inventfon isonly one of many possible embodiments of the invention. It should be understood that the `various features of the invention may be modified, both in structure, combination, and arrangement, to adapt the invention to differentuses or different conditions of service. The vertically reciprocating iinpeller 13 disclosed herein is shownV associated with a primary impeller or paddle in a companion application Serial No. 294,793, filed on the same day as the-present application. In that application Serial No. 294,7 93, and in divisions thereof, there are claims `directed to the associated use of the two impellers,iwhile the present application is concerned with the use of the vertical iniy peller without the paddle. The vertical iin- Y peller ofthe copenfding application 294,793v

is used in the manner described hereinV for producing the various forms of mold charges described above, some of which are shownin., Figs. 23 to 40 of the drawing of the present y charge from each mass while it remains susapplication. i

i The faction. ofthe vertical impellers of these .two applications is also similar in certain respects to the action of the impeller shown and described in another copending application filed by me December 4, 1916, Serial No. 134,828.. rherefore, the present application is a continuation of my application Serial No.y 134,828 as to certain of the appended claims.` Y v l. In the manufacture "of glassware, the method vof delivering, to successively presented molds, continuous series of similar and compact charges of molten glass of shape and weight approprfat'e to the par-v ticular molds to be fed, which method com prises superimposing a sufcient head of molten glass, of proper viscosity for suspension in mold-charge masses, upona delivery orifice of a proper contour and area to per'- intrthe feeding of charges appropriate to the molds to be fed, and, for each mold charge, discharging the glass through said orifice, reciprocating a discharge-controlling implement toward and from said orifice to determine selectively the shape of the discharged glass suspended beneath said orifice, and severing a mold charge from the discharged glass before the shape imparted to the discharged glass is lost and before the discharged glass receives any substantial under-support.A

The method of feeding molten glass from a parent body ina succession of similar mold charges, that comprises flowing glass downwardly from the parent body around thelower end of a reciprocating discharge-controlling implement and through a submerged outlet completely enclosing the issuing glass, the glass being in a condition suitable for working and of such Viscosity that a compact mass of glass at least equal to Aa mold charge is accumulated by suspension ofthe issuing glass beyond the outlet, and shearing aV mold charge from the pendant niass'at a level spaced below the outlet while the glass is still 'suspended and prior to its reception in any receptacle, and repeating the'sever'al operations in regular cycles.

3. The method of obtaining mold charges of molten glass, which comprises suspending successive masses of the glass froma plurality of supporting members having a periodic relative movement, and shearing a mold charge `from each mass while it remains suspended without substantial under-support.

Y v4. The method of forming and separating` molten glass into inold charges,'which comprises discharging successive masses of the porting means, then moving said supporting means to assist in determining the shape of each suspendedk mass, and shearing a mold pended. K

5. Apparatus for feeding and receiving mold charges of molten glass, comprising a suspended beneath said outlet, and a charge-V receiver having its glass-supportingsurface spaced belowv the said shears at a distance greater than the' length of' the suspended mold charges when severed.`

6. The combination, with apparatus for segregating mold chargesof molten glass iny'cluding a container for the glass having a discharge outlet and shear operating below the outlet, of vertically .reciprocating means coacting with the outlet to .suspend beneath .the outlet successive accumulations of the glass, each at least equal. to a moldcliarge and a charge-receiver having itsL glass-supporting surface spaced-below the said shears at av distance greater than the length of the.

suspended mold chargesl when severed.

7; Apparatusfor separating molten glass into compact mold charges of controllable weight, including a furnace for supplying molten glass, a discharge chamber connected with the furnace by a supply passage and provided with a submerged discharge outlet,

manually adjustable contro-l means control ling: the effective sizeof the supply passage to regulate the depth of glass over the dis chargel outlet and the weight of the moldy charges, an implement projecting downward ly into theglass and'movable toward and f from the outlet, means'for reciprocating the implement periodically to form and selec-r tivelycontrol the shape of a succession of compact masses of the glass beneath the outlet, and movable shear yblades meeting periodically beneath the outlet, in timed relation to the motion of the implement, to.

shear a mold chargeA from each suspended ,mass and a chargereceiverhaving its glasssupporting surface spaced below said shears at a distance'greater than thek length of the suspended mold charges'v when severed.

8.111: apparatus for separating i molten glass.Y into mold charges, a container for the glass having asubmerger outlet', shears` adapted toV openfandf close below.'` the outlet to sever mold charges suspended therebeneath, al vertically movable` rigid yimplement projecting downwardly vinto the glass in working alignment with the outlet, means for so moving the implement 'downwardly during the issue of eachv mold charge, and upwardlyV after the issue of said charge, that eachcharge will bel produced andselectively shaped in suspension the movement of the implement,.meansl operating in timed rela-r severed., f

9. The method of' forming amold charge of molten glass of desired shape, appropriate to themol'df in which it is to: be fabricated, which comprises `discharging` glassk down- Y wardlythrough; an outlet and modifying the ratenofftherdischarge by applying'to; the

glass, above the outlet, a force which modifies gravity to produce a rate of discharge for anyv portionv of glass being discharged, proportionate to the desired diameter of that portion and to the tendency. ofthe weight of the previously discharged por tions to elongate that portion, maintaining `the discharged glass in ai suspended. mass, and then severing a mold charge from the suspended mass.

l0. The method of forming a mold charge.

ot molten. glass of predetermined artiiioial shape controlled at will and appropriatetoA the mold iii which it is to be fabricated,

which comprises extruding molten glass, through an outlet submerged in a. glass sup.-V

ply, and so `varying the eXtrusive pressureapplied above the; outlet, during the extrusion.

of the charge, and in accordance with the.

desired cross-sections of the. chargeat dif-f' ferent points along its length, asito impart the desired contour to the charge. A

1l.V The method of feeding, from a parent body of molten glass, a succession of uni-.

forni moldv charges, appropriate in size and shape to the molds in which they are to be fabrica-ted, that kcomprises so periodically flowing Aglassifi'om the `parent body kthrough a discharge outlet submerged by the, parent body as to form a mass of glass pendant beneath .the orifice, andentirely suspended from above, shaping eachl pendant. mass by applying tothe glass, above the outlet'and yin a predetermined manner during the for'- mation of each mold charge, a yforce which' modifies gravity tochange the rate ofl iow through the outlet, and, when the. mass is formed to the desired shape, severing a mold charge from the pendant mass at a level i. spaced below the plane of suspension of the mass, and' repeating theV several steps 'ini regular cycles.

12- Thel methodof. forming mold chargesv of molten glass that comprises causing glass to `flow downwardly through a discharge glass,l applying intermittent eXtrusive im5- pulses to the glass above the opening to iiicrease its rate of discharge from the said' opening, and, after each impulse, severing a mold charge 'from the glass at alevel spaced below the said.- opening while the discharged glassr is hanging freely below theopening; 13. The method, of feeding, from a'parentA body ofvmolten glass, succession. of similary opening submerged by the parent body of mold charges appropriate in size and shape', f i

to the molds in which theyT are to be fabricated, that comprises periodically flowingl f glassi fronia parent supply-body through a discharge outlet submerged `by the parent body, under a'pressure so low as to form a:

mass Iof glassv pendant* beneath thefoutlet and entirely supported from above, shaping leach pendant 'mass by then increasing, dur.-

ing the formation 'of eachcharge and in a predetermined manner, `selected in accordance With the desired shape of that mold charge, the force applied above'the outlet and under Which the glass issues from the outlet, severing a mold charge from the pendant mass,l at a level spaced below its plane:

of suspension, when formed to the desired shape, and repeating the said steps in regular cycles. n Y

14. The method of feeding, from a parent body. of molten glass, a succession of similar moldV charges appropriate in size and shape to the molds in which they are tobe fabricated, .that comprises 'periodically doWing glass from a parent supply body through a discharge outlet submerged by the parent body, under a pressure so low as to form a mass of glass pendant beneath the outlet and entirely supported from above,shaping each pendant mass by then progressively increasing,` during the formation of each mold charge, the force applied above the outlet and under 'which the glass issues from the outlet, such increased force being sui'ticient to compensate fully for the-tendency of the issued glass to attenuate by its own Weight, severing a mold charge Afrom the pendant mass, at alevel spaced below'. its plane of sus-v pension,.and repeating the said steps in regular cycles.

l5.' In the method offeeding molten glass from a parent body through a submerged discharge outlet in a succession of similar mold charges appropriate in size and shape to the molds in lWhich they are to be fabricated, and each suspended in a. compact mass beneath the outlet, and connected with the parent-'body through the issuing glass, the

r steps ofdetermining the shape of each suspendedmass Yby applying directlyto the glass adjacent to and above the outlet, Vand without interrupting the continuity' of the connection, a force acting to'extrude glass from the'outlet and progressively increasingl during the issue of the glass, severing a mold through issuing glass, determining the shape of glass at least'as great as a mold charge is accumulated by suspension of the issuing glass beneath ,the outlet,severing a `mold charge from the pendant mass of glass, at

Va level spaced below its plane of suspension,

when the mass is formed to the desired shape, and repeating the several steps in regular cycles.

17. The method of delivering molten glass from the outlet of a container in similar mold-ch rge masses of controlled shape appropri ate to the molds in which they are to be fabricated, that comprises discharging Vthe glass through said outlet under ythe con- .charge downwardly around an implement and through a restricted passage having a discharge outlet, moving the implement downward y in the glass toward the outlet, during the discharge of each mold charge, so as to increase the resistance to the discharging movement 'of glass in said passage but at such speed as to accelerate the discharge of glass through said outlet notwithstanding such increased resistance, and.

shearing al mold charge. from each Y discharged Amass or" glass.VV y

19. The method of obtaining mold charges of molten glass from a supply thereof, by extrusion through an aperture and by severance, whichY Y comprises severing each charge of glass from thev supply While such charve is hanging freely'andfbefore it is received in any receptacle, stopping or retarding vthe extrusion of the glass through -the eXtrusion aperture after 'each severing operation, starting a separater extrusionof glassgfor each charge at a definite instant prior vto each severing operation, and then increasingthe rate of extrusion of the glass for that charge by forcing a plunger dovvn- Wardly into the mass of glass above the eX- trusion aperture to compensate at least partially fortheincreasing tendency of the glass to attenuate by reason of the Weight of the already extruded glass. Y

20. rihe method of obtaining` mold charges of molten glass from a supplythereof, by extrusion through an aperture and by severance, Which comprises severing each chargek of glass from the supply'while such charge is hanging freely and'before it is received in any receptacleJ` stopping or retarding the extrusion of the glass through

Images