US1673108A - Pressing glass - Google Patents

Description

June l2, 1928. 1,673,108

R. L. ELLERY PRBssING GLASS Filed Jan. 2o.` 192s- 5 sheets-sheet 1 l l 5 l i l V 1 i 11 l fia? Robert LE/lery attenua June i2, 1928.

R. L. ELLE-:RY

PRESSING GLASS Filed Jan. 20, i926 w M. n .nl a m -mfmf 3f L m will. w T e h ID s m l o June l2, 1928;

R. L. ELLERY PRESSING GLASS 3 Sheets-Sheet Filed Jan. 20, 1926 Robert LEI/ery.

s? mw rliwHmnm l|||1 'firmar amasar L. mLnnY, or ronnno, omo.

rnnssmo Guss.

Application led January 20, 1926. Serial No. 82,892.

This invention relates to thd pressing of glassware, and particularly to the pressing of glass plates.

The invention has for its object to provide a method of and apparatus for pressing glass between two approaching surfaces in such a manner as to spread the glass evenly and form clear sheets which will require the minimum of grinding and polishing. Other objects of 'the invention will appear as the description proceeds.

ln the accompanying drawing, forming a part of this specification, Figure 1 is a somewhat diagrammatic side view of one form of apparatus embodying my invention; Fig.

2 is a detail showing somewhat diagrannnatcally my method of ejecting the finished article from the mold; Fig. 3 is a somewhat diagrammatic showing of the means for moving the mold carrier; Figf 4 is a detail showing a portion of the mold operating means; Fig. 5 is a somewhat diagrammatic showing of an alternative form of mold carrying and operating means.

In the structure shown in Fig. 1 there is a mold-carrier 10 mounted upon a horizontal axis 11. In the structure shown there are four molds mounted 'upon the mold-carrier. The mold shown at the right of Fig. 1 will be described first. In this structure there isa stationary plate 12 preferably mounted at a slight angle to the vertical. Opposite this plate there is a movable plate 13. The

movable mold-plate is pivoted at 14 for oscillation towards and from mold-plate 12. 1 An arm 15 extends from a rock shaft 16 mounted in the moldcarrier and is connected by an adjustable link 17 to the movable mold-plate 13. Another arm 18 extends downward from rock shaft 16 and termin-Y ates in an anti-friction roller 19. A lever 20 is pivoted at 21 to a stationary portion of the trame 22 supporting axis 11. One arm 23 of the lever- 2() extends downward and is connected at 24 to the piston rod 25 'of a piston 26 working in a cylinder 27. The other arm 28 oflever 2() extends upward and bears a plate 29 adapted to contact roller 19 and oscillate rock. shaft 16. Rock shaft 16 is provided with a'third arm 32 bearing a roller and actuated in a manner which lwill be described later.

The upper end of .the `oscillating moldplate is provided with a flange 30 adapted to pass over the outer end of mcldlate 12. The stationary frame 22.*is provi ed,with

plates 31 at opposite ends of the mold,-plates 12 and .13 when the mold is in the position Vat the right, as shown in Fig. 1.

With the parts in the position shown in #en It will be understood that before the startdo ing valve is operated a suitable charge o`4 glass has been dropped between the mold plates, and as plate 13 is swung to the right this charge of glass is gradually spread upward between the mold plates. readily seen, the glass iii-st approaches final thickness at the lower-side of the sheet and the glass is spread upward from the comparatively thick upper ortion of the wedging charge of glass-to lbrm the upper of the sheet, the portion of glass W lich is being moved" upward remaining thicker than the lower portion until the sheet is finally. completed. ln this way the glass is spread to sheet form with a minimum movement of a glass through a narrow space between opposed plates. The glass is spread much 1n the same way it would he by rolling .it upon a table, and at the same time the opposed surfaces are both held perfectly fiat and level 91) by the o posed mold plates so that there is no possi ility of the formation ot' bends or waves such as arereadily formed when the glass is rolled.

After the glass plate has been pressed in g5 in Fig. 3. This cylinder is mounted upon a horizontal axis 37 and has attached to its piston rod a rack 38 adapted to mesh with a y gear 39 attached to the mold-carrier. The rack is raised and lowered into and out of mesh with gear 39 by means of a cylinder 105 'Dhere is diagrammatically indicated a valve 41 controlled by the raising and lowering of the rack for controlling the movement of air to opposite ends of cylinder 36 in a/manner that will he readily under- 11iv stood and which forms no part of this invention.

As will be Hi ortion "ou l'n tile construct-ion showt! there ere four molds upon the carrier, end, therefore, the carrier is rotated through 990 et eecn movement of rscli 38 so that the mold originally y in tl'ie position shown :it tli'e right Fig l Vliile the mold is open et l2? the formed r plete-gloss@ slid from the mold by en ejector plunger lll actuated by s cylinder 45. Any desired ineens may be provided for receiving the molded plate of glass.

The next movement of the mold carrier re.

turns the mold to its originel position ready to receive another charge of glass. lt will be readily .understood that et. each move nient of the mold-carrier e charge is placed in the mold occupying tlie positionsliown et the right of Fig. l While e. plete is being ejected from the mold shown the top oil-lig. l. and plates are cooling,T and setting in the other two positions.

.lt Will be readily understood that fewer or more molds may 'oe used ssoesired to give the gloss the proper setting time.

The modied form shown in Fig. 5 operates upon substantially the saine principle. lo this structure shown regmentarily end somewhat disgremmetically in Fig. 5, there is s ,rotating table carrying e series of molds 5l, but one of which is shown. Esch mold comprises :i stationary mold-halt 52 and en oscilletelole mold-half 53. ln the construction shown, the mold-heli 53 is provided with end plates l. A rock shaft 55 mounted adjacent the hub of table 50 is provided with en erm 56 carrying e roller 57 and connected and by means of en adjustable link 58 to the oscillatoble mold-plete A cylinder 59is mounted above the position of roller 57 connected to the mold in glass receiving position, end the piston rod 60 of cylinder 59 carries a Contact plate 6l adopted to press upon roller 57 end bring erin 56 and link 58 into line and close mold-plete 53 against mold-plete 52. l

In the construction shown, erin 56 is provided Wit-li a lug 57 carrying-leem .roller 58 adepte-d to run upon cani 59 which opens the mold at proper times end-allows it to loe closed when in. glass-receiving position. lt will be readily understood that the table 5d is moved .intermittently andthe molds are charged successi'vel es they reach cllergling position andere e osed successiyelyI by the operetion olv cylinder 59. ltis thought that the operation of this apparatus will oe eprent wit-hout further description thereof. flletel molds for glass or other refractory elole ol numerous mossos materiels that ere either molded or pressed 'when roede plastic or liquid by liest, ere sseelly inode of cest iron or steel. Gering,

'liowever, to the porousA nature of cest iron,

there is e rapid onidizetion and disiotegreytion of iron when exposed directly to the action liest, and molds mode of iron are, therefore, not entirely satisfactory, especislly when used in press operations ostile suriece in Contact with the not insteriels quickly becomes rough and the glass or other materiel clingsto these rough surfsces, ineli-` ing s product of poor quality.

llt is tomid that il molds of this character are protected by s dense, close grain mete rial, such es nickel, the lite of the mold is enhanced and the quality of the product is greatly improved. Nickel is close grained end capable of talking e-liiglimirror polish which it Willimport to the molded or pressed article when the article is lield. in the mold uiitil it is cool enough to retain its shape. lt is much more resistent than cest: iron or steel to the action of heet, lnivng the melt ing point averaging epproiinetelyllo F; higher than iron. lt does not oxiolise, ex cept in the presence of iodine, elilorium, loroinine, lurium, cyenogen and these elements are not present in harmful quantities im ordinary glass or die costing operations.

lliczel is deposited on the mold surfaces preferably by electrolysis and Whenever possible directly on to the molds Without the medium ol' e. copper plating for the resson` that coeilicient of expansion between the iron and nickelis nearer than. iron end copper or nickel and copper. Therefore, 'Wl'icre the nickel is deposited directly on to the iron surface to be protected, there is less likelihood of eking, owing to unequal expansion of the two metals. ln the cese oi' nickel and lill) irontliis is about es 5 is to 6%.. The nickel vaction of the materiel being molded, will take and retain :i higher polish, giving a smoother end more linislied article lthan'is the cese with the present practice, and vWill edd greatly to the life of the mold.

' Wish it understood that my n invention is not4 limited to any specific construction, srrengenient or forni lof the parts es it is cspnlodilcstioos and changes Without departing from the spirit of the claims.

lla-ving thus described my invention, what l claim as new and desire to secure by Let-- ters Patent is:

l, in a glass press, a mold carrier mounted upon a horizontal axis, a series of molds -inounted ou said carrier, each mold comprising a fixed mold plate and an" oscillatable mold plate pivoted near onejq edge upon a horizontal axis, said mold )lates being arranged to torni a ll-shape opening there between when the oscillatable moldfplate is moved 'to open osition,` and to press a plate `therebetween w en the oscillatable plate is moved to closed position, means to ino ve said carrier intermittently and ineens to close the molds successively while 'the carrier is at rest, said means being in. position to actuate the mold having its oscillatable mold plate pivoted at its lower edge.

Q. ln a glass press, a n'iold carrier mounted upon a'horizontal axis, a series ot' molds mounted on said carrier. each mold comprising a lined mold late and an oscilletable mold plate pivotenear one edge upon e. horizontal axis, said mold plates being in`- ranged to form -a ll-shaped opening` therebetween when the oscillatable mold plate is moved to open position, und to press a plate therebetween when the oscillatable plate is moved to closed position, means to move said 'carrier intermittently and means to close the molds successively while the carrier is at rest, said means being in position to actuate the mold having its osciliatable mold plete pivoted at its lower edve, means to open the molds successively as they reach their upper position and means to eject the pressed glass successively from the open molds.

3 receiver for molten glass comprising outwardly diverging plate mold members, means for bringing said members into porallclism as a closed mold, an orienting device torbri'nginir said closed Vmold members into horizontally extending position, releasing means for the plate in the mold, and ai discharge device for ejecting the released plate from the mold. i

di. ln apparatus for pressingsheet glass, a mold comprising two mold plates, means to place seid mold plates in receiving position with their pressing faces approximately vertical, hut diverging upwardly, means for bringing said mold plates into parallelism as a closed mold, means for placing the mold in a discharging position with the sheet pressed between its mold 'faces substantially horizontal, means for opening the mold, and means for cjecting the pressed plate from the mold horizontally.

lu apparatus for pressing sheet glass, a mold plate arranged with its pressing surface substdntially vertical when in glass receiving position,y a co-operating mold plate pivoted near the lower edge of the first said mold plete, means to swing said co-o erating mold plate about said pivot to close t e mold and pressa sheet of glass between the mold surfaces, means to move the mold from its receiving position to a substantially horizontal discharging position, and means to discharge a pressed sheet from the mold horizontally while the mold is in substantially horizontal position.

6. In app'uratus for pressing sheet glass, a series of molds each comprising oppositely disposed mold plates, means for positioning each mold in succession in receiving position with its molding `space substantially vertical, means adjacent said receiving posi tion for operating upon veach mold in succession and pressing the mold plates together while they are in receiving position, means to move the molds in succession to a discharging position, and means at the`discharging position to eject sheets of glass from the molds successively.

7. ln apparatus for pressing sheet glass, a series of molds each comprising two mold plates hinged together adjacent one edge, means for placing each `mold in succession in receiving position with its hinged side downward and with the plates diverging upwardly, means adjacent thereceiving posi tion for bringing said plates into parallel ism a closed mold, means for moving the molds in succession into va discharging posi tion with the pressed sheet therein substantially horizontal,A and ejecting means adjacent the discharging position adapted to eject pressed sheets horizontally from the molds in succession.

8. VIn apparatus ries of molds each comprising two mold plates, means for placing each mold in succession with its molding space substantially vertical, a cylinder and piston, means operable by said piston for pressing the mold plates together whileinreceivng position, means for pressing glass, a seto move the mold in succession from receiving position to a dischar ing position with` its mold cavity substantiL ly horizontal, cam means for separating the plates of each mold as the mold approaches discharging position, another cylinder and piston and means operable by the last said piston lor ejecting a molded article horizontall from each mold in succession at the disc arging posi?` tion.

In testimony whereof I have hereunto signed my name to this specification.

sonner L. meer.

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