US1271961A - Glass-forming machine. - Google Patents

Description

W. S'. TEEPLE.

GLASS FORMING MACHINE.

j APPLICATION FILED JUNE 29. l9l6. RENEWED FEB. 21. ms. 1,271,961. Patented July 9,1918.

4 SHEETS-SHEET l.

FIEJ- WITNESSES INVENTOR W. S. TEEPLE.

GLASS FORMING MACHINE.

APPLICATION FILED JUNE 29. 1916. RENEWED FEB. 21.1913.

1 ,271,96 1 Patented July 9, 1918.

4 SHEETS-SHEET 2- WITNESSES W. S. TEEPLE.

GLASS FORMING MACHINE APPLICATION FILED JUNE 29. 1916. RENEWED FEB. 21, l9l8.

1 ,27 1,96 1 Patented July 9, 1918.

4 SHEETS-SHEET a.

WITNESSES W. S. TEEPLE.

GLASS FORMING MACHlNE. APPLICATION FILED mu: 29. I916. RENEWED FEB. 21. 1918.

1,271,961 Patented July 9,1918.

35 38 4 SHI ZETSSHEET 4.

FIG.B.

WITNESSES WILLIAM S. TEEPLE, OF WELLSBURG, WEST VIRGINIA.

GLASS-FORMING MACHINE.

Specification of Letters Patent.

Patented July 9, 1918.

Application filed June 29, 1916, Serial No. 106,591. Renewed February 27, 1918. Serial No. 219,541.

.such as narrow neck bottles and the like, it

has, for practical reasons, been found desirable to provide one mold for receiving the molten glass and, by successive operations, to form the neck of the article and to effect a preliminary blowing thereof, and to provide a second mold for effectin the final blowing of the article. It is the 0 ject of my inven-- tion to provide a machine adapted to carry out this general operation automatically.

In the accompanying sheets of drawings, which form part of my specification, I have shown the preferred embodiment of my invention. Figure 1 is a side elevation of the machine; Fig. 2 a plan view thereof; Fig. if) a horizontal sectional view taken in the plane indicated by the line III-III, Fig. 1; Fig. 4 a detail horizontal sectional view to enlarged scale of the shear mechanism, the plane of view being indicated by the line IVIV, Fig. 1; Fig. 5 is a vertical sectional view taken on the line V-'V, Fig. 4; Figs. 6 and 7 are, respectively, detail sectional views of a timing valve and a controlling valve fully explained hereinafter; and Fig. 8 is a diagrammatic representation of all the operating parts and the pipe connections to them.

In the machine which I provide, the primary and finishing molds are arranged on separate tables. It will, however, be apparent that, as far as some features of my invention are concerned, the arrangement may be dilferent. Adjacent to, and coordinated with the primary mold table there is, first, mechanism for shearing the molten glass from a punty orother gathering tool so that the glass may drop into a mold; secondly, mechanism for blowing the sheared gather of glass to the bottom of the mold, and around a neck-former movable through the bottom of the mold; and thirdly, mechanism for effecting the preliminary blowing of the glass. These several steps, as Well as the turning of the table from one station to another, are effected automatically by a train of ,mechanism set in operation by a trip lever for causing the shears to operate. a

The movement of the finishing, table is coordinated with that of the primary mold table, and the operation of the mechanism for the finishing blow is coordinated with that for the primary blowing. While the movements of the several parts of the machine may be automatically eflected by various kinds of mechanism, I preferably employ fluid pressure operated mechanism.

Referring more particularly to the embodiment of my invention shown in the drawings, the machine is mounted upon a suitable truck frame 1, provided, adjacent to its opposite ends, with threaded tubes 2 and 3 for supporting at desired elevations the mechanism presently to be described. The

primary mold table 4 is rotatably mounted upon the frame and is concentric with the tube 2, while the finishing mold table 5 is rotatably mounted on the frame concentric with the tube 3. For turning the two tables simultaneously, their peripheries are provided with gear teeth which mesh with an idler pinion 6 disposed between the tables, as seen in Figs. 1 and 2. Thus, when thetable 4: is intermittently turned as will presently be described, rotation is also imparted to the table 5.

In the further description of the machine shown herein I will explain first the construction of the several operating elements thereof, and thereafter explain, with ref erence to Fig. 8, the mechanism for effecting their coordinate action.

The first operating element in each cycle of operation is the shears, which are shown in Figs. 1 and 5. They comprise a pair of blades 7, pivoted as at 8 to a supporting frame 9 attached to the tube 2, and engaged at their outer edges by a cross-head 10 secured to a piston rod 11. This rod is in turn attached to a piston 12 movable by pressure fluid through a cylinder 13. The flow of pressure fluid (which is preferably. compressed air, and will be so designated hereinafter) to and from the opposite ends of the cylinder is controlled by a valve 1 1 reciprocatory in a casing 15, which casing,

at its central portion, is connected to a pipe other. The pipe 17 leads from one side of a spring pressed valve 19 adapted to be opened by a lever 20 when a gathering tool is pressed against the lever, the other side of said valve being connected by a pipe 21 to the source of air supply. The pipe 18 is connected to the cylinder 13 at the point indicated in-Fig. 5, the arrangement being such that, when the piston 12 has been moved to the left end of the cylinder, the end of 1 the pip 18 will be open to the air pressure at the right of the piston so that air will flow through the pipe 18 to cause the valve 14 to move to the left, that is, to its indicated position. The casing 15 is furthermore connected to the opposite ends of the cylinder 13 by pipes 22 and'23, so disposed that, when the valve 14 is in its alternate positions, one or the other end of the piston 12 is in communication with the source of air supply. The valve casing 15 is also provided with exhaust ports 24 and 25 (the latter having a valve 26 for regulating the flow of air) so positioned with relation to the construction of the valve 14 that the end of the cylinder 13, which at a given time is cut oil" from the source of air supply, will be open to an exhaust port.

A further feature of the shear mechanism remains to be described. Means are provided whereby, upon the opening of the shears after their cutting operation, air is let to the mechanism for performing the next step in the cycle of operation oft-he machine. For this purpose 1' preferably provide a spring pressed trip valve 27, connected on one side to an air supply pip 28, and on the other side to a pipe 29 leading to mechanism presently to be described. The stem of the valve 27 extends upwardly and in the path of a cam finger 30, pivotally secured to a laterally projecting portion of the cross head 10. The finger 30 is so constructed and attached to the cross head that upon the forward movement of the piston 12 the finger will ride over the stemwithout depressing it, but that on the return movement of the piston the valve stem will be pressed downwardly to permit air to flow from pipe 28 through pipe 29.

The molten glass sheared from a punty drops into a primary blowing mold 31 onthe table 4 immediately below the shears. The mechanism for blowing the gather of glass to the bottom of the mold and around.

a neck former is then brought into opera,- tlon before the table is advanced a station.

For this purpose a blow pad 32 is secured to a piston rod 33, mounted for reciprocation in a cylinder 34 supported by the tube 2. The rod 33 is, in the usual and well known manner and hence not requiring detail showing herein, provided with an air passageway, so that, when air is let into the top of the cylinder 34 to cause the piston to move downwardly until the pad 32 is seated on the mold, air' will also flow through the piston toblow the gather of glass to the bottom of the mold.

of the piston, to move the stem, thereby per-- mitting air to flow from a supply pipe 37 through a pipe 38 leading to mechanism for a subsequent operation of the machine.

'To hold, for a desired period, the pad 32 firmly against the mold, timing mechanism is provided to delay, after the rod 33 has been moved downwardly, the reversal of flow of air to the cylinder 34. Thistiming mechanism, as illustrated in Figs. 6' and 8, comprises a casing 47, in two chambers of which there are mounted for reciprocatory movements a plunger 48 and a valve 49. One end of the valve chamber is,-by a pipe 50, connected to pi e 29, which, as already explained, is opene to air supply upon the opening of the shears. Thus, as the shears open, the valve 49 is moved to a position opposite to that indicated in the drawings.

.The central portion of the valve chamber is,

by a pipe 51, connected to the source of air supply. At one side of the pipe 51 a pipe 52 connects the valve with the left end of the plunger chamber and with a pipe 58 leading to the bottom of the cylinder 34; while, at the other side of the pipe 51, a

pipe 53 connects the valve with the right" end of the plunger chamber and with a pipe 54 leading to the top of the cylinder 34. The further details of the timing mechanism consist of a check valve 55 in the pipe 52 so that air may not flow from theplunger to the valve chamber, a valve-controlled exhaust port 56 communicating with the plunger chamber, and a by-pass 57 between the plunger and the valve chamber as shown. The arrangement of the timing valve is such that, when air is let into the pipe 50, the

valve 49 moves to the right as viewed in the drawings, so that air from pipe 51 is cut off from pipe 52 and permitted to flowthrough pipe 53 to the rear of the plunger 49, and through ipe 54 to the cylinder 34. The time consume in movin the plunger 48 through its chamber is regu ated by the extent of the opening of the valve in the exhaust port 56. When the plunger has moved to the left sufiiciently to uncover the opening to the the valve 49 and causes it to move to the left, thereby reversing the flow of air to the cylinder 34,'and to the plunger chamber, and hence causing the rod 33 to rise the plunger 48 to move to the right.

A neck-forming rod 39 is mounted below,

by-pass 57, air flows to the right end of tance above the bottom of the mold in the usual manner to form a neck in the blank. The lower end of this .rod is provided with a beveled lateral projection '41, adapted, when the rod is, moved downwardly, to move a yalve 42 to the position indicated in Fig. 8,

the cylinder through a pipe 79. Aswill be understood, the pin 78 fits into holes 80 in the table 4.

The construction and partial operation of the several elements of the machine having been thus explained, I will now describe the pipe connections, etc., for effecting the desired coordinate and automatic action of such elements, and with such description I will explain the complete operation of the machine.

Referring particularly to Fig. 8, the source the construction and purpose of which valve of supply of compressed air is indicated by will be explained hereinafter.

cylinder. 44, and

.The mechanism for efiecting, the prelimina blowing'of the blank is'arranged at the the pipe A, which divides into two pipes 81 tabe station next to that for shearing the latter bein connected to pipes 21, 28 and 84.

glass, -blowing it to the bottom of the mold and .,formi ngg the neck; Iandethis blowin mechanism is';.ope :rated simultaneously wit% the neck-former. Theg-blowing mechanism comprises-a dsearr ingrodgs adapted to be reciprocated b meanssof acompressed air lowin rod-45 adapted to an-icylinder' 46. .Qilfj fi'e n final after it'has-be'en transbereciprocated'b Thefmech .isioffwell known construc- When the ever-20 is depressed by the gatherer, the valve 19 is opened, permitting air to flow to the valve casing 15 to move the fvalve 14. The subsequent automatic operation of the shears has already been fully explained. It is only necessary to state here that, upon the opening of the. shears, the finger 30 engages and opens the valve 27 to permit 'airto flow from pipe 28 through pipe 29 to pipes 50 arid 85, the latter leading :-31 to-;a finishing mold to one end of a valve casing 86; The air from pipe 50 moves the valve 49 (Fig. 6)

tion comprising-a blow head '61. secured .to a, to set 1n operation the moving of the rod 33 pistonfiQ heldupwardly by-a spring 63 and adapted. to be'moved to operative position by meansof a compressed air cylinder 64. As seen in Fig. 1, this mechanism 1s mounted on the supporting tube 3.

There remains yet to be explained the mechanism for. engaging, the-table 4, advancing it from station to station at the proper time in the cycle of operation, and for locking the table when at each station. For engaging the table, the mechanism shown herein com rises a collar 65, rotatably mounted concentrically with the axis of the table, and provided with a cylinder 66 in which there is, mounted a pin 67 held up-f "wardly by a sprin and adapted to be moved downwardly by-compressed air when let into thecylin'der through a flexible pipe-68. The

pin.67 is adapted to fit into one of a series .ofholes 69 extendingthrough the table 4, there being as many holes as there are stations in a complete cycle of the table. The

'collar 65 is provided with a laterally projecting slotted arrn70, which'is en aged by the end of a piston rod'71 mounte forgeciprocation in a pressure cylinder 72. Secured to the rod 1 there is. a finger 73, which, at theends of the range of movement of such rod,ls trikes tripvalve's 74 and 75 adapted to control the flow of air in the-manner presently to be described. For locking the table at each 'station, ,I provide a; cylinder 76, in which thereis mounted a pin 78, held'upwardly. by a spring, and adapted to be moved downwardly by compressed air when let into and the timing of its lowermost position. The operation of this air control timing mechanism has also been explained in detail, so that it is only necessary to here state that the movement of the valve-49 to the right causes air to flow to the top of the cylinder 34, and that the subsequent movement of such valve to the left effects a reversal of the flow to such cylinder and a consequent upward movement of the rod 33.

' Simultaneously w1th the flow of air through pipe50 to the timing mechanism, air also flows. through pipe 85 to the casing 86 and causes-the valve 87 therein to move to the left. .The casing 86 is, by pipe 83, connected to the air supply, and has pipe connections to the neck forming and blowing mechanism. A pipe 89 extends from this casing to the top of the'cylinder 44, and, branching from the pipe 89, there are two pipes 90 and 91 leading to the bottom of cylinders 40 and 46, so that, when the.

- moved toward the molds 31, the members 33 and 39 operating at the first station to blow thed'gather of glass to the bottom of the mol and to form a neck in the glass, and the members 43 and 45 operating at the sec- 0nd station to efiect the preliminary blowing, the air for blowing flowing through a flexible pipe 92 leading from the pipe 89 to the lower end of the blowing rod 45.

The next step in the cycle of operation of the machine concerns the table turning mechanism. As already explained the finger 35 trips the valve 36 upon the upward move ment of the rod 33, and thus air is let from pipe 37 through pipe38 to the left end of the casing 83. The effect of this is to move finger 73 thereof strikes and opens the trip valve 75 so that air may flow from a pipe 94,, connected to the supply pipe 84, through the pipe 7 9 to the cylinder 76 to release the locking pin 78, and through'a pipe 95 tothe left end of the casing 86 to cause the valve 87 to move to the right. In this position of the valve 87 the pipe 89 is opened to exhaust through the port 96- of casing 86, and live air is caused to flow from pipe 88 through a pipe 97 to the bottom of the cylinder 44 to cause the'rod 43 to rise, and through branch pipe 98, 99' and 100 to the top of the cylinders 40 and v46 to cause the neck former 39 andtheblow rod to move downwardly. As'the'neck former 39 reaches the end of its downward movement, the member 41 en gages and moves to the left the valve 42, thus permittingair to flow from pipe 81 through a pipe 101-to--the forward or right end of the cylinder 72 so that the rod 71 will move to the left to turn the tables. -When the finger 73 moves from thespringpressed trip valve 75, air is shut ofi' from the cylinder 76 so that the locking pin 78, acti'ng under the pressure of a spring within the cylinder 76, will slip into the next registering locking hole 80'.-

The final step of the complete cycle of operation is effected when the rod 71 reaches the endof its movement to the left. llifhen it is nearing such position, the finger73 so that air flows from the thereof strikes and opens the trip valve 74, pipe 84 to a pipe 102 and its'branches 103 and 68. The former branch leads to the blow cylinder 64 for eflecting the finishing blow of a blank in the mold 60, and the latter branch extendsto' the cylinder 66 to release the table engaging pin 67. Thus the pin67 remains released, and live air flows to the finishing blowing mechanism until the rod 71 is again moved to the right in the next cycle of operation.

According to the provisionsof the patent statutes I have described the principle and operation of my invention together with the machine which "I now consider to represent the best embodiment'thereof. However, I desire to have it-understood that the ma chine shown herein isdonly illustrative of "actuated table mover,

preliminary blowing fluid pressure actuated table-moving ro d;

my invention, and that my invention may be practisedin other forms of machines.

I claim as my invention:

1. In a glass forming machine, the combination of a rotatable table provided with preliminary blowing molds, a fluid pressure actuated table mover for advancing the table from station to station, glass cutting shears, fluid pressure means for operating said shears, a reciprocatory fluid pressure actuated rod at one station and above a mold for blowing glass to the bottom of the mold,

operation said neck former and said glass blower, and means rendered operative by the concluding movement of said rod for setting said table mover in operation.

2., In a glass forming machine, the combination of a rotatable table provided with preliminary blowing molds, a fluid pressure including a reciprocatory istonrod, glass cutting shears, fluid pressure means for operating said shears, a reciprocatory fluid pressure actuated rod at one station and above a mold for blowing glass to the bottom of the mold, a reciprocatory fluid pressure actuated neck former at said station and below the table, a fluid pressure actuated glass blower at another station for blowing a blank, means including a timing valve rendered operative by the movement of the shears for moving said last named rod to and from a mold, means including a valve rendered operative by the movement of the shears and simultaneously with said last named'means for setting in,

operation said neck-former and said glass blower, I concluding movement of said-rod for causin one direction, and means rendered oper-.

the piston rod for'causing return movements of said-neck-former" and glass blower.-

3.. In a glass forming machine, the combination of a rotatable table provided with molds, a reciprocatory glass cutting shears, a fluid pressure actuated rod above the table for blowing glass to the bottom of a mold, a fluid pressure actuated reciprocatory neck former below the table,means including a timing valve means rendered operative by I ,the

operative upon the concluding movement of v v the shears for causing sa d r0 to descend and rlse, independent means operative simulsaid neck former to move downwardly, and

means set in operation by the downward movement of said neck former for causing said piston rod tomove in the opposite direction-from its first named movement.

4. In a glass forming machine, the com-' bination of a rotatable table provided with preliminary blowing molds, a fluid pressure actuated table mover for advancing the table from station to station, glass cutting shears, fluid pressure-means for successively closing and opening said shears, fluid pressure actuated means including a reciprocating rod for forming at one station a neck in the glass, a valve for timing the movement of said rod, fluid pressure actuated means at another station for blowing a blank, means rendered operative by the opening movement of the shears for simultaneously setting in operation said neck forming and said blowing means, and means rendered operative by the concluding movement of said rod for settinfisaid table mover in operation.

5. a glass forming machine, the combination of a rotatable table provided with preliminary blowing molds, a fluid pressure actuated table mover for advancmg the table from station to station, glass cutting shears, fluid pressure means for successively closing and openingsaid shears, a reciprocatory fluid pressure actuated rod at one station and above the mold for blowing glass to the bottom of the mold, a reciprocatory fluid pressure actuated neck former. at said station and below the table, fluid pressure actuated means at another station for blowing a blank, means rendered operative by the opening movement of the shears for simultaneously setting in operation said rod,

said neck former and said blowing means,-

a valve for timing the movement of said rod, and means rendered operative by the concluding movement of said rod for setting said table mover in operation.

6. In a lass forming machine, the com d bination 0 a rotatable table provided with preliminary blowing molds, a fluid ressure actuated table mover for advancing t e table from station to station, glass cutting shears, fluid pressure means for successively closing and opening said shears, fluid pressure actuated means including a reciprocating rod for forming at one station a neck'in the glass, a valve for timing the movement of said rod, fluid pressure actuated means at another station for blowing a blank, means rendered operative by-the movement of the shears for simultaneously setting in operation said neck forming and said blowing means and means rendered operative by the movement of said rod for setting said table mover in operation.

In testimony whereof I have hereunto set my hand.

WILLIAM S. TEEPLE.

Witnesses:

G. B. MAenn, E. E. CARTER.

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