USRE11668E - owens - Google Patents

Description

'LSheets-Sheet. 1, 3 MI I MAOEINH FOR BLOWING GLASS.

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4 J. OWENS. MACHINE POR'BLOWING GLASS.

No. 11,668. Reissued June 14, 1898.

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M. J. OWENS. MACHINE FOR BLOWING GLASS.

No. 1.1.668. Reissned June 14, 18 98.

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MACHINE FUR BLOWING GLASS. No. 11,668. Reissued-June 14. 18-98.

7 Sheets-Sheet 6. OWENS. MACHINE FUR BLOWING GLASS.

No. 11,668. Reissued Jun 14; 1898.

W 66 v 4 )1 A JV 7 ays ro' 'afmachine of means for severally and respec- UNITED STATES MICHAEL J. OWENS, or TOLEDO, onto, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO THE TOLEDO GLASS COMPANY, or SAME PLACE.

MACHINE FOR BLOWING GLASS.

SPEOIFIFCATION forming part of Reissued Letters Patent No. 11,668, dated June 14, 1898. Original No. 548,588, dated (lctoher 22, 1895. Application for reissue filed May 5, 1898. Serial No. 679,872.

To all whom. it may concern:

Be it known that 1, MICHAEL J. OWENS, a citizen of the United States of America, residing at Toledo, in the county of Lucas and State of Ohio, have invented new and useful Improvements in Machines for Blowing Glass,

"of whichithe following is-a specification.

-Zlhis invention relates to improvements in machinery for blowing glass into sectional molds, and particularly to the organization in ve'ly performing automatically and mechan ally operations which heretofore have been one manually or through the operation of 'ni-pulated or in some manner actuated by or dependent upon hand, foot, or lung power.

Reference is to be had to th'e accompanying drawings, in which- Figure l is a front elevation of an improved ."form'of aglass-blowing machine embodying in an opcrativeand satisfactory manner the snbject-mat-ter and principles of the present invention. Fig.2 is a side elevation of the same. Fig.3 is a plan view of I that portion of the machine which is see n below the plane indicatedby line 3 3,'-'Fig. 2'. Fig. 4 is a central vertical section atthe lower part of the machine as taken on the plane indicated by the section-line 4: 4, Fig. 3. Fig. 5 is a plan view of cam orfconstraining devices for effecting the'sectional molds. Fig. 6 is a perspectiveiview of parts of one of the sectional molds and of supporting and othercooperative parts.

Fig. 7 is a plan view of the support for the removable blowpipe. Fig. 8 is a side elevation, with some parts in section, of an automatic glass-blowing machine constructed under the present invention, but differing with respect to details of construction. Fig. 8 is a perspective view of the mechanism'which operates the yoke that closes the mold and permits it to open. Fig. 9 is a front elevation of Fig. 8. Fig. 10 is a horizontal section as taken on line 1010,- Fig. 9, showing the sectional mold and the autoinatically-operating yoke therefor. Fig. 11 is a front elevation of the parts shows in Fig. 10, the yoke being seen in vertical section.- Fig. 12 is a plan.

view as seen below the plane indicated by line mplenfents o-r devices whichhavefbeen ma 1 2 12, Fig. 8. 13 is a vertical sectional view of parts as taken on the line 13 13, Fig. 12. Fig. 14. is a central vertical section through the clutchmechanism which effects the starting and automatic stopping of the machine, which as awhole is seen in Figs. 8 and 9. Fig. 15 is a crosssectional view of the intermittently-operating shaft on-flwhich the clutch is mounted, together with a face View of the clutch'. Fig. 16 is a view as taken on the same plane of cross-section as Fig. 15, but looking in the opposite direction, whereby the face of a constantly-rotating gear-wheel is seen. Fig. 17 is a plan view'of the parts "seen in Fig. 15 below the plane indicated by 17 17 on Fig. 14. v

The present invention consists in the embodiment in an automatic glass-blowing machine of means or instrumentalities which are found in common in both types of the ma- 7e chine illustrated in the accompanying drawings that is to say, the invention consists, in a machine for blowing glass, in an air-conduit, a sectional mold, a removable blowpipe, means for supporting the blowpipe in operative relation to the air-conduit and to the mold, and means for automatically closing said mold after the introduction of the blowtroduction ofthe blowpipe in its support and .for automatically opening the mold prior to the removal of the blowpipe, and means for cooling the mold while open.

The inventionfurthermore consists in the combination, in an automatic glass-blowing machine, of a sectional mold, an air-cenduit,

a removable blowpipe, a support by which 5 the removable blowpipe may be temporarily sustained in connection with the air-conduit and in operative relation to the mold, means for/imparting with respect to the blowpipe and mold a rotational movement, the one we which is passed the stud h, headed and shoul relative to the other, and means for automati'cally opening and closing the sectional molds.

The invention further consists in combinations of devices and-partswhich refer more particularly to the type of machine illustrated in Figsjl to 7, inclusive, all substantially as 1 will hereinafter more fully appearand be set' be first described sufficiently in detail, as fol? lows:

Are presents the base of the machine,whieh is circular and having rising from the edges thereof the uprights c a a, the upper portions of which are joined by the arches a a a which unite at the central hub a in which the upper end of the central vertical shaft 15 is journaled. Said shaft is also jonrnaled, near its lower end, in the upstanding hub b of the'base, receiving below the hub, which latter is suitably distant from and above the floor, the bevel gear-wheel C. With this bevel gear-wheel meshes a bevel-pinion D on the horizontally-mounted counter-shaft E, which is geared to the horizontal drivingshaft F, provided with the fixed and-loose drive-pulleys F F thereon. The vertical shaft B is supported in its journal-bearings by having the collar G fixed thereon next above the said upstanding base-hub b. Said collar G, as particularly seen in Fig. 6 at tlie left, has four radially-projecting ear-lugs d' tional molds J with which the machine is provided. Each mold J, which may be one of the great variety of forms or contours, is

formed in the two parts 6 2, Figs. 3 and 6 withthe lugs 6 6 which, with the upstanding studfof the mold-carrier, constitute the f hinge-supporting means for the opening and closing mold. Each mold-section, furthermore, has a radially-projecting log 8 with which is connected oncof the mold'operating rods e A slide-blockL is mounted for a slide movement in the ways r therefor at the inner edges of the bifurcated portions of each mold-car-' rier. This slide-block has the vertical perforation 20, upwardly through and beyond dered, as at 22 and 23, at and near its bottom and screw-threaded at its upper end. The hubs of the arms are set about the upper end portion of the stud h, and the nut 2' firmly clamps said hubs against the upper side of the slide-block, bringing the shoulder 23 hard against the under side of said-block, and said clamping bind of the nut confines the'arms i i in their angular relations. The

extremities of the arms are perforated, rc-

ceiving therethrough the ends of the aforementioned connecting-rods 0 which are con: nected to and operate the moldsections. The ends of the said conneetin g-rods are screwthreaded and passed quite loosely through the perforations in the said. arms 1', whereby as the arms have their movements on and as one with the slide the connecting-rods may have slight swinging movements, as permitted by the suiiieiently large perforations in the ends .of the arms 1', to accord with the change in their direction which they necessarily acquire in consonance with the swinging of the mold-sections. The rollerj is applied to freely rotate about the stud, on the lower headed end of which it is supported below the slide-block.

Each mold-carrier H has provided therefor at its under side one or more antifrietionrolls is, arranged to have their rotation in planes crosswise of the lengths of the moldcarrier to run on the track m, provided on the top-of the bed.

It is clearly shown in Figs. 3 and 4 and in dicated in Figs. 1 and :2 that at one side of its center the base A has the basin lli, down into and out from which the said track takes its course, this course of the track, however,being deflected toward the center of the base it descends. The aforesaid upstanding hub has at its upper edge opposite the basin the semicircular flange 5 around on which the rollers j of the slide run as the mold-earriers revolve. Opposite and. located out-- wardly beyond one end of the semicircular flange 19 isv a. flange or cam-rib n, upstanding from the top of the bed near the basin, the operation of which is to impinge against'the roller of each slide on each mold-carrier as it approaches the basin, so to force the slide inend or part of the said semicircular flange 5 whereby the slideis caused again to move outwardiyand the mold-section to be closed. The springs 10 are applied. for keeping the molds open when they are immersed, their reaction being next thereafter overcome by the action of rib L on rollerj under each.

bracket-arm s, in "the extremity of which is supported and journaled for rotation the Yeti tieal tube Q the upper end of which is entered for air-communication from the source of air-supply within the said depending hollow hub Q The lower end of the said vertical and rotatable tube Q has the sleeve screwed thereon, which is formed with thedo.wnwardly-iiaring orifice, (and which may advantageously be hushed with rubber,) within which the upper end of the blowpipe may be quickly entered to be in a manner supported andsteadied and to receive through it the air-pressure from the arm and depending tube Q Q Each of the said rotatable tubes has thereon the frictional roller R, at

the same level with which is the semicircular I flange or rib S, sustained by the supporting bracket pieces 29, which inwardly extend from the uprights a a. The arrangement of this rib is high above and concentric with the flange b and diametrically opposite from the basin M. Therefore as the hollow arms Q and vertical tubes Q which are adj unct-s thereof, have their revoluble movements the rollers B, being in frictional contact with the said semicircular rib, will impart to the blowpipes, which have their bodily revoluble movements, as understood, also motions of rotation on their own axes during the period t their circuit from the place of their enrance into the machine and mold thereof at oneside of the basin around to near the oplposite side of the basin for the eifect of ro- ,.tating the glass being blown within the molds, which latter, relative to the rotating blowpipes, have no movement-s except the opening and closing movements.

U are spring-actuated valve-stems extending out from-the end of each of the arms Q and controlling valve in the air-conduit therein, these 'alvcs being of anydesired construt/czzion d not shown in the drawings. In'the .a 'e of the arms Q these valves are adapted to be automatically operated by bearing against the cam U first to open the valve at the desired point when the gather is in proper relation to the mold, to hold the valve open during the action of blowing, and auto,-

matically to close the valve at a point prior to the removal of the article from the mold in its blown condition.

. The machine for blowing glass illustrated in Figs. 8 to 16, inclusive, embodies a means for'supporting the blowpipe with its one end in communication with an air-supplying device audits other in its operative progiimity U A n or. with n the .mold, certain means 101' antomatically admitting the air through the blowpipe, a sectional mold which is adapted to be closed about oradjacent the gathering end of the blowpipe and to be also automatically opened, whereby the paste covered inner surface thereof may be subjected to a sprinkling or cooling action, means for automatically effecting the closing and afterward the opening of the mold'sections and for imparting to them whiletheyare closed rotary motions,'and means for automatically causing a sprinkling of the paste-lined mold-sections while opened. In this form of the machine the automatic operations are instituted .by and in consequence of the placing-of the blowpipe, which has the gathering of glass thereon, in the machine in itsposition of support with its one end in communication'with the air-supplying receptacle or conduit and its other end in its operative relation to the mold.

A detaileddescription of the mechanism and parts thereof which are comprised in the second form of the glass-blowing machine will now be given, as well also as will be the op'-' eration thereof. 1

This machine embodiesthe standard a, of

.suitably massive and stable construction and having a wide base, and has near the bottom thereof bearings for the horizontal rotatable shaft B and also for the driving-shaft C Above the shaft B are, at varying heights, the forwardly-extending shelf-like projections D N, and F The bracket D has vertieal bearings for the shaft G which at its upper end carries the base or mold-support 1-1 upon which the mold-sections 6 care pivotally supported, they having suitable ears which are pinned to lugs providedupon-said base. The mold-supporting shaft G by the bevel-gears 01 has connection with the counter-shaft c, which also has the pinion 0 thereon that meshes into the gear 0 which is fixed on shaft B Above the bracket D is the hinged yoke H which encircles the moldbase and is adapted upon its upward-swinging movement to have a cam-like impingement against the edges of the weighted wings e of the mold-sections, and thereby to swing said sections against their tendency to gravitate and open into their closed positions, which positions are seen in Figs. Sand 9. The yoke has the depending adjustable screw 9 the lower end of which is in bearin g against IIO the'Vertically-mov'able bar 72 the roller h 'jonrnaled at the lower end thereof, resting peripherally upon the cam-wheel J which is fixed upon the aforesaid shaft B The bracket N, as particularly seen by Figs. 12 and 13, has the recess 25 within its forward edge, the'width of which at its inner boundary is such as to permit the engagement thereat of the necked-down portion 2lof the I blowpipe P. The dog 9' is mounted upon the top of the bracket Nand is connected to 7 swing thereon across and away from acrosssaid recess 21, and also to have in addition to its swinging movement an endwise-shding movement, all by reason of the pin-and-slot connection indicated at m, Fig, 12. The stoppin 30 limits undue inward-swinging movement of this dog. Under and alongside of the bracket N is a'rockshaft L having at its opposite ends the upwardly and the more or less horizontally extending arms Z and 1 the one, Z, being in engagementwith the aforesaid dog to be by the dog swung when the lattcr has imparted to it its endwise-sliding movement. The other arm, Z has connected to it the flexible connection Z which is secured to the bar mfiwhich is movable vertically in suitable guideways therefor. This bar has applied thereto the spring miwhereby it normally is forced to the limit of its downward movement, which is in the path of the clutch-dog 0, carried by and within a suitable recess of the clutch-carrier 0 which is afiixed upon the aforesaid shaft B The spring 0 exerts a tendency to move the dog 0, when it may be permitted so to be moved, into clutch engagement with the wheel M which is loose and constantly rotating upon the shaft B by reason of its being geared tothe driving-shaft The lowerextremity of the aforesaid bar on is beveled, as seen by the cress-section of this bar, whiclrappears in Fig. 17.

The reservoir M is supported beneath the bracket N, which is the blowpipe-suppcrt, and between it and the level of the sectional paste-mold and has the conduit (1 leading forwardly from its front end and terminating in ,the branched extremitieswhich are provided with the'downturned sprinklers 1 arranged and directed for sprinkling the paste-lined surfaces of the mold-section whenthe latter are permitted to be swung open. (See Fig. 11 particularly.) The conduitqhas the valve, which is sufiiciently indicated at s, and to theoperating handle or lever thereof is secured the cord 8, which runs therefrom u'pwardly around the sheave s to a connection with the aforesaid dogj The bracket F supports the hollow arm U, which has the two chambers or passages t and a therein, one leading from the source of airsupply and the other terminating in the downwardly-directed opening 11?, within which is the vertically-movable tube a having at its lower end the downwardly-flaring receivingso'cket it for the upper end of the blowpipe P. The passages 25 and it are separated by the web wall t having the opening ig'which forms communication between said passages. The opening t is normally closed by the valve 1), towhich is provided the spring The intermediatcly-pivoted lever XV has one end in bearing engagement against the upper end of the aforesaid vertically-movable tube 1L3 and its other arm rests upon the top of the Valveste'm.

hen. the blowpipe has its shouldered central portion 21 moved into the recess 25 at thforward'edge of the shelf-like blowpipesupport which the blowpipe engages for its support, it exerts a cam-like action against the inclined end of the dog, causing the lat ter to move endwisa'which it is permitted to do by reason of the slot, within which the pivot seenat a: protrudes. This imparts, against-the resistance of the spring 122?, a swinging movement to the rock-shaft arm Z,

a rocking movement to the said shaft, a

swinging movement to the rock-shaft arm Z and an endwise drawing of the vertical tripbar m which releases the clutclrdog to the action of its spring 0 whereby the clutch is thrown into engagement with the constantly rotating wheel M which is loose on the shaft B This clutch is of a well-known kind and is illustrated in Figs. 14 to 17, inclusive, and having made one revolution the clutching dogby impingement against the beveled side of the trip-bar (which, after having been raised to permit the clutchto start, promptly snaps back by reason of ,the spring to its original position in the path of revolution of the clutchdog) forces the dog inwardly within the recess therefor and out of clutch, whereby further rotary motion is arrested until the next operation. T ie above-described automatic clutch per se is not a new device.

Preparatory to'startiug the machine the cam-wheel, which is on the intermittently-rotating shaft B stands with the lowest part of the cam upward and in contact with the camroll .on the vertically-movable bar h of the mold-yoke, which latter, therefore, is dropped to its lowest position by gravity, the molds having automatically opened, all as seen in Figs. 10 and 11; but as the cam begins its movement it effects the raising of the yoke and the maintenance thereof in raised position until the cam has completed its circuit,

-whereupon the yoke descends and the moldsections open by reason of the gravity effect of the weighted wings thereof. The moldsupporting shaft, deriving its rotary movement concurrently with the elevation of the mold-yoke through the aforementioned gearing at d c 0 has its speed multiplied, so that the mold has several rotations around the stationary blowpipe before being permitted to.

open. As the yoke is next permitted to dcscend at the time when the machine stops, whereby the mold-sections are spread open, with their inner surfaces upward, and where upon the blowpipe may be removed, there will be concurrent with the removal of the blowpipe and outward swinging of the dog j through the cord-and-lever connection with the valve .9 in the conduit leading from the liquid-reservoir to the sprinklers, an opening of said valve, resulting in thr sprinkling of the exposed paste-covered surfaces of the mold-sections.

Of course it is to be understood that when the blowpipe is brought to its position .in the daring socket a by forcing the endwisc-movable tube a upward, which it does as it seats itself, it swings the lever 10 to open the valve to the cbmmunication with the air-supplying conduit or reservoir, the opened communicawhile in the other the blowpipe is permitted to remain stationary and the rotary movement is imparted to the paste-mold. In either case the result of the rotation of the one or other of the parts is the same in that it evercomes seam-marks and imparts to the blown and molded article a perfectly smooth surface.

In conclusion Istate that along with broad claims which embrace both species of machines heretofore described I include in this application more specific claims directed to that species of machine illustrated in Figs. 1 to 7, inclusive. The other species of machine, Figs. 8 to 17, inclusive, is the subject of a separate application in my name for Letters Patent, filed April 1, 1895, Serial No. 543,987.

Having thus described my invention, what I claim, and desire to secure by Letters Patent, is

1. In an automatic machine for blowing glass, an air-conduit, a sectional mold, a removable blowpipe, means for supporting the blowpipe in operative relation to the air-conduit and to the mold and means for automatically closing said mold after the introduction of the blowpipe in its support and for automatically opening the mold prior to the removal of said blowpipe. I

'2. In an automatic machine for blowing glass, an air-conduit, a sectional mold, a removable blowpipe, means for supporting the blowpipe in operative relation to the air-conduit and to the mold, means for automatically closing said mold after the introduction of the blowpipe in its support and for automatically opening the mold prior to the removal of said blowpipe, and means for cooling the mold while open.

3. In an automatic glass-blowing machine, a sectional mold, an air-conduit, a removable blowpipe, a support by which the removable pipe may be temporarily sustained in conc o ith the air-conduit and in operative relation to the mold, means for automatically openingand closing the mold, and means for imparting, with respect to the blowpipe and mold, a'rotational movement of the one relative to the other..

4. In a glass-blowing machine, in combination, a mold and a mold-carrier, means for im parting movements to the carrier, an air-conduit that is movable in unison with the mold and a removable blowpipe which mayflbe temporarily placedinconnectionwith the anconduit and in cooperative proximity :tdthe' mold, for the purpose substantially -as set forth.

5. In a glass-blowing machine, a mold-carrier, with the mold thereon, and an air-supmeans for imparting traveling movements thereto in unison, a removable blowpipe, and means comprised in said machine for afiording a support for the blowpipe whereby one end thereof-may be in communication with theair-supplying conduit and the other-in 00- operative proximity to the mold, substantially as described.

6. In a glass-blowing machine, the combination with the vertical rotatable shaft having 7 plying conduit, both movable, and having at its bottom a revoluble mold-carrier with the mold thereon, having at its top an airconduit'which is revoluble in conjunction with the mold-carrier, and having an intermediate part, sup portedby, and revoluble by reason of the rotation of the shaft, for afiord; ing a temporary support for the blowpipe whereby the top thereof may be in connection with said conduit, and the bottom in operative proximity to the mold, substantially as described.

'7. In a glass-blowing machine, in combination, a mold-carrier, and a sectional opening and closing mold thereon, means for imparting movements to the carrier, an air-conduit that is movable in unison with the mold, a removable blowpipe which may be temporarily placed in connection with. the air-conduit and in cooperative proximity to the mold, and mechanism for periodically and automatically opening and closing the mold-section, substantially as described.

8. In a glass-blowing machine, in combination, a-mold and a mold-carrier, means for imparting movements to the carrier, an air-conduit that is movable in unison with the mold, a removable blowpipe which may be temporarily placed inconnection with the air-conduit and in cooperative proximity to the mold, a valve in said conduit and means for automatically and periodically operating the valve, substantially as described 9. In a glass-blowing machine, in combina- I tion, a mold and a mold-carrier, meansfor im parting a traveling movement to the carrier,

an air-conduit that is movable in unison with the mold, a blowpipe which may be placed in connection with the air-conduit and in cooperative proximity to the mold; and means for imparting a rotary movement to the blow pipe,'snbstantial1y-as and for the purposes swinging movement, a'basin for a cooling liquid in the course of travel of the carrier, an

-' air-conduit that is movable in unison with the mold, and a "removable blowpipe which may be temporarily placed in connection with the movably, g said conduit and in proximity to the mold,

aificonduit, and in cooperative proximityto purpose substantially as set the mold, for the forth.

11. In a glass-blowing machine, in combina-' tion, a sectional mold and a mold-carrier,

tion, the base A, the central vertical rotatable shaft having connected thereto near its bottom a revoluble mold-carrier with a mold thereon, having at its top an air-conduit which is revoluble in conjunction with the mold-carrier and having an intermediate horizontallyextended part. for aifording a temporary support for the blowpipe whereby the top thereof may be in connection with said air-conduit and the bottom in operative proximity to the mold, a gear, C, on said vertical shaft, the horizontal co enter-shaft E, geared to the lower end of the vertical shaft, the driving-shaft, F,

and gearing connecting it with the countershaft, substantially as described.

13. In a glass-blowing machine, the combination with the base having the track, m; of the vertical shaft, 13, connected to and radially extended from the shaft and having a friction-roll which runs on the track, the mold mounted on the carrier, a radial air-conduit carried by and extended from the upper part of the shaft and means for supporting, re-

a blowpipe in connection with the substantially as described.

14. In a glass-blowing machine, the combination with the base having the basimM, therein and the track 'm, which runs around the top of the base and has its course conon said track, a mold tinned in the basin of the vertical shaft, B, hinge-connected to, and radially extended from, the shaft and having a running bearing mounted on the carrier and means for turning said shaft,1substa11- tially as described.

15. In a glass-blowing machine, in combination, the rotary shaft, the carrier having a mold thereon,- connected to and outwardly extended from a member of the shaft, and having a slide movably guided thereon which is provided with a projection or roller, a riblike part along which the said projection runs for a portion of its course whereby the slide is outwardly maintained, and a cam in engagement with which the roller at another part'of its course runs for forcing the slide inwardly and connections between the slide the purposes set forth.

and mold-sections wherebythe outward and inward movements of the slide close-and open the sectional mold, substantially as described;

ranged arms, t' t', clamped on the upperend of the stud above the slide-block, by the nut, 1 the mold-sections, e e, hinged on the moldcarriers, each having the outwardly-extendinglug, e and the connecting-rods, c, all substantially as described and'shown. 17. In a glass-blowing machine, in combination, a 'mcldand mold-carrier, means for imparting revolnble movements to the carrier,

and an air-conduit that is movable in unison with the mold, a removable blowpipe which may be placed in connection with the. airconduit and in cooperative proximity to the mold, a depending tubular part, Q rotatably.v mounted upon the revolnbly-carried air-conduit, to form a continuation thereof-and the, part which receives the engagementthorewi h of the upper end of the blowpipe, awheel or roller secured on said depending tubular rota-. table part, and the arc-shaped fixture, S, on which the said wheel runs during a portion of the revolu'ble movement of the mold-carrier and air-conduit, substantially'as described;

18. In a glass-blowing machine, the combination with the mold-carrier and the air-conduit Q, horizontallythereabove, and means forrevolubly moving both in unison'ofjthe depending rotary tubular continuation of the conduit Q, having its lower end constructed for the engagement therewith of thempper end of a blowpipe, substantially as, and for 19. In a glass-blowing machine, the combination with the base having the upstanding hub, b,with the outstanding arc-formed flange b and the eccentrically-arranged cam rib, n, of the mold-carriers having'thelsil ide, L, with the rollers, j the sectional moldsghinge l together and mounted on the mold-carriers and means in tervening between the slides and mold-sections actuated by the movements of the slide for opening and closing the moldsections, substantially as described.

20. Ina glass-blowing machine, the com-bination with the base, formed with the basin, of the revolubly-movable mold-carriers and. hinged molds thereon, the mold-carriers being jointed to the support which revolubly propels it, whereby.it may descend into the basin, means for openingthe molds prior to such descent, springs for exerting a pressure to restrain the open molds from closing while in theirlowered positions, and means for closing the molds afte ascending from within the basin, substantially as described.

21. In a machine for blowing glass, one or more molds each consisting of hinged sections,

a base on which said molds may move, hav-.

ing a depression in a portion of its surface in which said molds fall in succession when moved as aforesaid, means for moving said molds on said base and for cansing the same, severally, to open and close automatically while descending into and rising out of said depression, combined andoperating substantially as set forth.

22. In a machine for blowing glass, the combination of a sectional mold adapted to be opened and closed, a blowpipe, means for detachably supnorting the blowpipe tin op erative relation to a'source of air-supply and to the mold, theaiwsupply device, means for imparting to said blowpipe or mold a rotational movement,the one relative to the other, and means for wetting the mold between blowing operations.

In witness whereof I afiix my signatnre in the presence of two witnesses.

MICHAEL .LQWENS. Witnesses:

FRANK D. SUYDAN, Irv T. H; MILLER.

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