US910120A - Glass-making machine. - Google Patents

Description

O. N. EDMONDS.

GLASS MAKING MACHINE.

APPLICATION FILED MAY 8, 1908.

91 O, 120. Patentd Jan. 19, 1909.

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C. N. EDMONDS.

GLASS MAKING MACHINE.

APPLIOATION FILED MAY 8, 1900.

910, 120. Patented Jan. 19, 1909.

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GLASS MAKING MACHINE.

APPLICATION FILED MAY 8, 1908.

910,120. Patented Jan. 19, 1909.

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TINTTE STATE PATENT FFTQE.

CHARLES N. EDMONDS, OF MOUNT PLEASANT, PENNSYLVANIA, ASSIGNOR OF ONE-HALF TO ELNATHAN H. STEINMAN, OF MOUNT PLEASANT, PENNSYLVANIA.

GLASS-FIAKING IVIACHINE To all whom it may concern:

Be it known that I, CHARLES N. Ennoxns, a citizen of the United States, residing at Mount Pleasant, in the county of \Vestmoreland and State of Pennsylvania, have invented new and useful Improvements in Glass-Making Machines, of which the following is a specification.

This invention relates to a machine for making hollow glass articles such as glass lamp bodies wherein the base and pedestal are pressed into shape in a suitable mold and the bowl or reservoir blown while the blank is contained in the mold and subsequent to the pressing operation.

The invention has for one of its objects to improve and simplify the construction and operation of machines of this character so as to be comparatively easy and inexpensive to manufacture, capable of producing an article of superior quality, and so designed that the machine will have a. large output with a minimum of manual labor.

Another object of the invention is the provision of a machine comprising a rotary table carrying a plurality of molds which are moved step by step into position for receiving the necessary quantity of molten glass, to pressing position, blowing position, cooling position, and finally to position for removal of the finished articles from the molds.

Another object of the invention is the employment of a mold in which the finished article or blank is completely formed without requiring the mold to be inverted, there being two steps required to completely form the article, the first step consisting in the employment of means whereby the hollow base and the initial forming of the bowl portion of the lamp is siml'iltaneously performed, while the second step consists of the blowing of the bowl by a blast of air as the base and pedestal portions of the lamp are cooled and maintained in proper form by a holder and air jet device, thus preventing the glass from becoming too thin between the bowl and hollow of the pedestal.

A further object is the provision, in connection with a mold of this character, of a disk for forming the top of the bowl and mouth and provided with a nozzle for dis charging the jet of air to blow the bowl of the lamp, the die being placed in position in the mold immediately after the pressing op- Speeification of Letters Patent.

Application filed Ivlay 8, 1908.

Patented Jan. 19, 1909.

Serial No. 431,716.

eration and the initial forming of the bowl portion of the blank.

A still further object is the novel arrangement of air supplying means for cooling the pedestal and base of the blank and simultaneously blowing the bowl, in combination with an air-actuated piston which retains the blank holder and jet device in position during the blowing operation.

Another object is the provision of a mold mounted upon a table that has an opening communicating with the bowl chamber portion of the mold and through which is raised a die and punch for operating on the blank to initially form the bowl thereof for enabling the ct of air to more effectively blow the bowl at the subsequent stage, the die and punch being withdrawn from the chamber at the proper moment for permitting the insertion of the nozzle-carrying die before the mold is moved to the position for the bl0wing operation.

lVith these objects in view and others, as will appear as the description proceeds, the invention comprises the various novel features of construction and arrangement of parts which will be more fully described hereinafter and set forth with particularity in the claims appended hereto.

In the accompanying drawings, which illustrate one of the embodiments of the invention, Figure 1 is a plan view of the machine. Fig. 2 is an enlarged detail sectional view of one of the molds, showing the parts in position at the end of the pressing operation and the initial forming of the bowl portion of the blank. Fig. 3 is a similar view showing the pressing punch and initial bowl-forming die and piercing punch removed, and the nor'zzle-carrying die and blank holder and cooler in position. Fig. 4

is a similar view of the mold showing the instance, five molds a, b, c, d, c, are carried by the table and the latter is adapted to make one complete revolution in five steps. Each mold comprises two sections 1 and 2 made of metal and provided with apertured lugs 3 for receiving a pintle 4 whereby the sections are hingedly and removably connected. The sections part on a central vertical plane and each mold has a bowl-forming chamber 5, a base-forming chamber 6, and a pedestal-forming portion 7. Each mold rests on a disk or base plate 8 that has a central opening 9 disposed over an opening 10 in the top plate 11 of the table A, the disk 8 being secured to the said top plate by bolts 12 or other suitable fastenings. Arising from the mold-supporting disk 8 is an approximately semicircular flange 13 provided with a horizontally-extending rim 14, and the two parts of the mold carried by the disk 8 are shaped to engage around this flange and its rim so as to centralize the mold on its supporting disk and at the same time prevent the mold from being displaced.

As shown in Fig. 1, the parts 1 and 2 of each mold are provided with handles 15 whereby the mold can be opened and closed. The bowl-forming chamber 5 of a mold is open at its bottom for permitting the insertion and removal of the die employed for initially forming the bowl portion of the blank, as will be hereinafter more fully explained. The chamber 6 is provided with an annular shoulder 16 on which rests a ring 17, Fig. 2, for forming the pressing operation. As shown in Figs. 4 and 5, the two parts of the mold are cut away at a point below the chamber 5 to form a horizontally-extending passage 18, in which is slidably mounted the nozzle-carrying die 19 that forms the top of the bowl of the lamp.

Under each mold is a vertically-movable element or follower 20 which carries a tapering punch 21 rising centrally from a head 22 that has a threaded shank 23 screwing into a collar or connector 24, the connector being itself screwed on the element 20. Cooperating with this punch device is a hollow or thimble-shaped die 25 which is placed in the bowl-forming chamber 5 of themold to initially form the bowl-portion of the blank during the pressing operation. The die 25 has an opening 26 for receiving the mouthforming punch 21, and the inner end of the hollow 27 of the die is shouldered at 28 to form the collar-holding flange 29 of the blank. The die 25 moves vertically into and out of the chamber 5 through the openings 9 and 10 of the plates 8 and 11, and the die is raised and lowered by the element 20. This element is guided in an opening 30 in the bottom plate 32 of the table A and extending through an opening 33 in the intermediate plate 34 of the table, the said opening being shouldered at 35 to constitute a rest for the die 25 when the latter is lowered out of the mold after the pressing operation, and the opening 33 is large enough to permit the head 22 to pass therethrough. When the element 20 is in its lowermost position, as shown in Fig. 3, the mouth-forming punch 21 is separated from the die 25 so that the die and punch will have a chance to cool between successive pressing operations, and if desired, any suitable means may be em ployed for discharging a current of air against these parts. The elements 20 are adapted to be raised by any suitable mechanism when each mold is carried to the proper position for the pressing operation, and when the element is fully raised, it will be locked by a spring-pressed latch 36 that engages under the bottom of the element, as shown in Fig. 2, and after the pressing operation is completed, the latch is withdrawn to permit the punch-carrying element 20, together with the die 25 to drop out of the mold.

Mounted on the column B is a laterallyextending bracket or arm 37 on which is mounted a device G for actuating the blankpressing element or plunger 38 that is adapted to enter each mold to form the hollow base and pedestal of the blank. This element 38 is detachably connected with a rod 39 of a piston 40 which reciprocates in a cylinder 41 carried on the bracket 37. The piston is actuated by air admitted to the cylinder at opposite sides of the piston by pipes 42 and 43. The plunger 38 conforms substantially to the shape of the base cham her 6 and pedestal portion 7 of the mold. When a mold is brought under the device C, air is admitted through the pipe 42 to the cylinder 41 so that the plunger 38 will be forced into the mold to press the blank into shape, the die 25 and mouth-forming punch being first inserted in the mold before the supply of air to the cylinder 41 is open. As the pressing element 38 descends, it enters the ring 17, Fig. 2, and causes the glass previously placed in the mold to fill the entire hollow of the die 27, the base chamber 6, and pedestalforming portion 7 of the mold. After this is done, the element 38 is raised by air being admitted to the under side of the piston 40 through the pipe 43 and at the same time the latch 36 is released by the operator so as to permit the mouthforming punch 21 and die 25 to drop out of the mold. This pressing operation occurs when a mold is in the position occupied by the mold b, Fig. l, and when the pressing operation is completed, the table is moved another step in a clockwise direction to bring the mold carrying the partially formed blank under the arm or bracket 45 carried by the column B so as to be in position for the blowing operation.

During the movement of the mold from the pressing to the blowing devices, the operator inserts in the blank a cooling and holding device designated generally by D. There are as many devices as there are molds and each device consists of a disk at) provided with a handle 47 whereby the operator can conveniently manipulate the same. On the disk is a central hollow stem 48, Fig. 3, that carries a head 49 shaped to enter the pedestal 50 of the blank. This head has a central bore 51 and longitudinal or superficial grooves 52 that are connected with the bore by branch passages 53, whereby air can be discharged through the stem 48 to the internal surface of the pedestal 50 so as to cool the glass during the blowing of the bowl, the said superficial grooves 52 discharging upwardly into the hollow base 54 of the blank. The disk L6 rests on the top of the mold and has outlet openings 55 through which the cooling air passes oil to the at mosphere.

V hen the device D is inserted in the blank and the table has been moved to the next point after the pressing operation, the device D is locked in position by an air-operated device E. This device comprises a cylinder 57 secured on the outer end of the bracket 45 and in which is a piston 58. The piston is provided with a stem 59 that has secured to its lower end a disk 60 that is adapted to bear against the disk 46 of the device D. For moving the piston 58 downwardly, air is supplied to the cylinder through the pipe 61 and the air is maintained in the cylinder throughout the blowing operation, so that the device D will be maintained in position. After the blowing operation is completed, the supply of air through the pipe G1 is cut off and air supplied to the under side of the piston 58 through the pipe 62 so as to raise the piston and lift the part 60 off the device D for permitting the latter to be removed from the mold after the completion of the blank, and when the table has moved from under the mechanism E by the rotation of the table A.

The piston stem 59 is provided with a passage 63 that alines with the tubular stem 41-8 of the device D, and the upper side of the disk 46 is formed with a chamber 64 with which the hollow of the stem l8 and passage 3 communicate. The upper end of the passage 3 terminates in a port (35 that reg isters with the inner end of the air supply pipe 66 attached to the pipe 61, so that air for operating the piston 58 and for supplying the cooling device D, can be derived from a single source. hen the part 60 is moved downwardly into contact with the device D by the air operating on the piston 58, the port 65 will register with the pipe 66 so that air will be immediately supplied to the airdistributing head 49 of the device D. The

pedestal of the blank is thus cooled by the air and the shape of the pedestal is maintained by the head 49 while air is supplied to blow the bowl of the blank, the cooling of the pedestal serving to prevent the glass between the hollow of the pedestal and bowl from becoming too thin. The operator moves the nozzle-carrying die 19 from the position shown in Fig. 3 to that shown in Figs. 3 and 5 inclusive. This die is of any approved shape and is in a form to entirely close the opening 9 of the plate 8, and is provided with a central nozzle 67 which discharges a jet of air into the mouth 8 of the blank, as shown in Fig. 3. The air for blowing the bowl 69 of the lamp blank is preferably derived from the same source that sup plies the pedestal-cooling device and the cylinder of the mechanism E, and for this purpose the die 19 has secured thereto a pipe 70 that communicates with the passage (31 leading to the nozzle 67, and on the outer end of the pipe 70 is a T connection 7 2 that receives a handle 73 and an upwardly-extending pipe 74.

Connected with the hollow 63 of the piston stem 59 is a pipe 75 extending horizontally and provided with an elbow 76 that carries a vertically-extending pipe 77. On the lower end of this latter pipe is a conical coupling member 78 that is adapted to enter a hollow conical coupling member 79 so that air will be supplied from the pipe 61 through the passage 63 and conduit leading to the nozzle 67, said conduit being formed by the pipes 70, 74, 75, 77. The upper part of this conduit, constituting the pipes 75 and 77, raised and lowered with the piston 58, so that the supply of air to the nozzle 67 will be established at the same time the air is supplied to the pedestal-cooling head l-f) ot the device D. In order to insure the seating of the coupling member 78 in the member 79, the member 60 carries a post 80 that moves freely through the guide 81 on the tubular extension 82 of the cylinder 57, thereby preventing the piston 58 and parts carried thereby from turning.

lVhen the blowing operation is completed, the supply of air is cut off from the pipe (3]. and the supply to the pipe 62 opened so as to thereby raise the piston 58 with the attached parts. The table A is then moved another stop until the mold with the finished article therein reaches the position occupied by the mold (Z, Fig. 1. During the next step in the movement of the table. the device D is removed from the finished article and placed on the table A in an inverted position at a point alongside of the mold and the mold is then opened as shown by the mold designated 0, Fig. 1, so that. the lamp can be removed. During the next step, the mold is again closed and the die 19 withdrawn to the position shown in Fig. 2, and when the table has reached a point where the mold is in the rests, a reciprocatory element to which the position occupied by the mold designated A, punch is detachably connected, means for a suitable quantity of glass is dropped into disengaging the die from the punch as the the mold. The mold being thus charged is element moves in one direction, and releas- 5 carried to the next position by the movement able means engaging the element for holding of the table A and stopped under the pressthe punch and die within the mold.

ing device C, so that the initial step in the l. The combination of a mold having a making of the lamp can be carried out. The side opening and a bottom opening, a blank various steps hereinbefore described are forming device movable through the bottom 10 passed through and in this manner the lamps opening, a die movable through the side are made in rapid succession. opening, a nozzle on the die, a pipe con- A machine of the character described, nected with the die, a handle connected with while especially adapted for making lamp the pipe to move the die, and means for supreservoirs, is capable of use in making botplying air through the pipe for blowing the 15 tles and articles having bowls and formed blank. with or without stems or reet, and which The combination of a mold having a may be made by blowing or by a combinachamber provided with an opening, a die tion of blowing and pressing operations. and punch device composed of separate parts From the foregoing description, taken in and together movable into the chamber and 20 connected with the accompanying drawings, arranged to separate when the device is out the advantages of the construction and or of the mold, an element operating on the mathe method of operation will be readily apterial in the mold to initially form the maparent to those skilled in the art to which, tcrial by the die and punch, a nozzle-carrythe invention appertains, and while I have ing die movable into the opening after re- 25 described the principle of operation of the inmoval of the first-mentioned die, and means vention, together with the apparatus which for discharging air into the mold through I now consider to be the best embodiment the said nozzle for blowing the said partially thereof, I desire to have it understood that formed material. the apparatus shown is merely illustrative, G. The combination of a mold, a table hav- 3 and that such changes may be made when ing an opening, a thimble-shaped die movdesired as are within the scope of the apable into the mold through the said opening, pended claims. means for moving the die into and out of Having thus described the invention, what the mold and detachable from the die when I claim is the latter is exterior to the mold for permit- 35 1. The combination of a rotatable table ting cooling of the die, a mouth-forming having openings, a mold supported on the punch cooperating with the die, and means table over each opening, a forming device for operating the die and punch. adapted to enter the top of each mold suc- 7. The combination of a plurality of cessively for shaping the blank therein, a molds each open at its bottom, a die movable 40 combined die and punch device movable upinto and out of the mold successively, a wardly into the mold successively through punch arranged-to enter the die for moving the openings of the table, said device being the same into and out of the mold and sepcomposed of two parts adapted to separate arable from the die for permitting the latter when the device is below the table for perand punch to be cooled by the atmosphere,

45 mitting the air to cool both parts, and means and means for actuating the punch. for simultaneously blowing a portion of a S. The combination of a table, a mold partially formed blank and cooling another thereon, a die movably-disposed under the portion thereof before the blanks are retable and movable into and out of the mold, moved from the mold. a punch'scparate from the die and adapted 50 2. The combination of a table mounted to enter and raise the same into the mold for rotation a plurality of molds movably for operating on the material therein, and mounted thereon and arranged to rotate means for subsequently blowing the material therewith, a pair of fluid actuated devices in the mold. disposed above the path of the molds and ar- The combination of a mold having a 55 ranged to register simultaneously with two bmvl-torming chamber, a thimble-like die molds, a blank forming means actuated by movable into the chamber and provided with one of the devices, a combined blank holding an opening, a punch adapted to enter the and cooling means held in place by the other opening of the die, an element for raising device, and means for blowing the blank and lowering the punch and also the die,

60 while the latter means is in operative poand an adjustable connection between the sition. punch and element.

8. The combination of a mold provided 10. The combination of a mold, a die movwith a chamber, a thimble shaped die movable into the same, a support for holding the able into the chamber, a punch adapted to die when out of the mold, a punch cooperat- 65 enter the die and on which the latter loosely ing with the die, and means supporting the punch separate from the mold to permit the air to cool the same.

11. The combination of a table having an opening, a mold mounted on the table over the opening, a die movable into the mold through the opening, a punch adapted to enter the die and provided with a head on which the die is adapted to rest during the movement into and out of the mold, an element connected with the punch for raising and lowering the latter, an adjustable connection between the element and punch, and a locking device engaging the element for holding the die and punch within the mold.

12. The combination of a plate provided with an opening, a two-part mold, means for centralizing the mold over the opening, means movable in and out of the opening for initially forming material in the die, a nozzle-carrying die slidably mounted on the plate and movable into the mold to cooperate therewith for forming the material into final shape, and air-supplying means con nected with the die for blowing the material in the mold.

13. The combination of a mold having an opening and a passage leading from the opening, a combined die and punch device movable into and out of the mold through the opening thereof, and a blowing device movable into and out of the mold through the said passage.

14. The combination of a mold, a pressing element adapted to enter the mold from one side to initially press the blank, an air-cooling device operating on the pressed portion of the blank, a blowing device movable into and out of the mold from the opposite side to blow a portion of the blank, and means for supplying air to the cooling and blowing devices.

15. The combination of a mold having a side opening, a device for holding and cooling a partially formed blank therein, a nozzle-carrying die movable into and out of the mold through the said opening for blowing a portion of the blank, and means for supplying air to the nozzle.

16. The combination of a mold having an opening, a nozzle-carrying device movably mounted and arranged to enter the opening to cooperate with the mold for shaping the outer surface of the molded article, a supply conduit composed of separate parts, and a coupling for connecting and disconnecting the parts by relative longitudinal movement.

17. The combination of a mold, a device for holding and cooling a partially formed blank in the mold, mechanism for retaining the device in position, a blowing device arranged to operate on the blank in the mold, and means for simultaneously supplying air to the cooling and blowing devices.

18. The combination of a mold, and a combined cooling and holding device, said device comprising a plate, a tubular member carried thereby, a head having superficial grooves receiving a cooling medium from the said member for cooling the blank in the mold.

1.9. The combination of a mold, a cooling device removably mounted in the mold, said device comprising a plate having a handle, a tubular stem on the plate, a head secured to the stem and provided with passages for directing a cooling medium against the blank in the mold, and means for supplying a cooling medium to the stem.

20. The combination of a mold, a removable device mounted on the mold for holding a blank therein, a fluid-actuated mechanism for retaining the device in position, a blowing device associated with the mold, and means for supplying fluid to the said mechanism and blowing device.

21. The combination of a mold, a device for holding a blank therein, a movable element for preventing displacement of the device and blank during the blowing of the latter, a blowing device, a fluid supply conduit connected with the blowing device and composed of separable parts, one part being connected with the element and arranged to be brought into communication with the other part automatically when the said holding device is locked.

22. The combination of a mold, a movable blowing device cooperating therewith, a cooling device, and fluid-actuated means controlling the supply of air to the blowing and cooling devices.

93. The combination of a mold, a blank holding and cooling device mounted thereon, a piston-operated element arranged to hold the device in position, a blowing device cooperating with the mold, a fluid supply conduit connected with the blowing device and composed of two parts adapted to be automatically connected and disconnected by the movement of the element.

2 1:. The combination of a blank cooling and holding device, a blowing device, a movable element for holding the first device in position, and means controlled by the movement of the element for supplying air to both devices.

95. The combination of a mold, a blank holding device mounted thereon, a piston and cylinder, means carried by the piston for holding the said device in position, a blowing device, means for supplying fluid to the cylinder to move the element into and out of engagement with the device, a blowing device cooperating with the mold, a supply conduit connected with the blowing device composed of separate parts automatically connected and disconnected by the movement of the piston.

26. The combination of a rotary table, a plurality of molds mounted thereon, a fluidactuated pressing device into cooperative relation with which the molds are successively moved, a removable cooling and blank holding device for each mold, a blowing device for each mold, and fluid-actuated means controlling the supply of fluid to the blowing and cooling devices of the successive molds.

27. The combination with a table, a mold mounted thereon, spaced supports disposed under the table, a die arranged to rest on one support, and a punch adapted to rest on the other support and movable upwardly to engage and carry the die into the mold.

28. The combination of a work table, supports below the same arranged one above the CHARLES N. EDMOND S.

Witnesses C. V. ROBINSON, C. E. MULLIN.

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