US1276392A - Glass-machine. - Google Patents

Description

W. l. MILLER.

GLASS MACHINE.

APPLICATION FILED IIAY 4. [9|]. nznzwzn MAY 2!. ma.

Patented Aug. 20, 1918.

ISHEETS-SHEET I W. J. MILLER.

GLASS MACHINE.

APPLICATIOI FILED KY 4. 19" IENE'ED "KY 2 all. 1,276,392. Patented Aug. 20, 1918.

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GLASS MACHINE.

APPLICATION FILED v4. 911. nznzwcu an 21. ms.

1,276,392. Patented Aug. 20, 191&

INVINTOI.

Ma Ma UNITED STATES PATENT OFFICE.

WILLIAM J. MILLER, 0F SWISSVALE BOROUGH, PENNSYLVANIA.

GLASS-MACHINE.

Application filed. May 4, 1917, Serial No. 166.313.

To all whom it may concern:

Be it known that I. \VILLIAM J. MILLER. a citizen of the United States. and residing in the borough of Swissvale, in the county of Allegheny and State of Pennsylvania, have invented or discovered new and useful Improvements in Glass-Machines. of which the following is a specification.

My invention consists in a new and improved machine for forming glass articles.

More particularly, it comprises an alternately acting two-mold machine wherein alternately the molds are closed for the forming operation, and opened and their contents discharged; and in operative means for the same.

Novel features of construction and arrangement of parts will appear from the following description.

In the accompanying drawings, which are merely intended to illustrate a practical embodiment of my invention but not to limit the scope of the same to the construction shown, Figure 1 is a plan view of the machine, the platform upon which the blowers or glass workers stand being partially broken awayto show parts; Fig. 2 is a view taken partly in section along the line II-II in Fig. 1, the mold, cylinders and automatic valves being shown in side elevation for the sake of clearness; Fig. 3 is an enlarged dia' grammatic view showing the connections between the fourway control valve and mold operating cylinders; Fig. 4 is a similar view showing the method of operating one of the mold bottoms. Fig. 5 is an enlarged longitudinal section of one of the automatic valves; Fig. 6 is an enlarged detail, partly in section showing the bleeder which controls the extension of the mold bottom and the means for actuating the latter; Fig. 7 is a broken plan view showing one of the mold tables, the mold bottom, the slide upon which the bottom is mounted and the cylinder which actuates said bottom slide; Fig. 8 is a broken vertical section along the line VIII-VIII in Fig. 7; Fig. 9 is a front elevation of -one of the cross heads b means of which the molds are opened an closed, the connecting rods being omitted for the sake of clearness and Fi 10 is a broken frcnt elevation of the mac ine, showing one of the molds in its closed position.

Specification of Letters Patent.

Patented Aug. 20, 1918.

Renewed May 27, 1918. Serial No. 236,923.

The following is a detailed description of the drawings.

A represents the bed plate of the machine. whose rear end is preferably supported by the wheels 1 to facilitate the movement of the machine when necessary.

8 represents the horizontal platform upon which the two blowers stand side by side, and which is preferably supported by means 0t screw shafts 2 mounted on standards which extend up from the bed plate A whereby said platform may be either raised or lowered so that various heights of molds may be used in the machine.

C and C represent the two hinged molds, shown for the sake of illustration as twopart molds, but it will be understood four part or any other character of hinged mold may be used on my improved machine.

Said molds rest upon the mold tables I) and D, respectively, which are in turn mounted upon the bed plate A.

The character of said mold tables is more clearly shown in Fig. 7.

The mold halves or parts are provided with rearwardly extending hinge members {which are pivotally mounted on vertical plus 5 which extend upwardly from the foot plates 6 adjustably secured .to the base plate A by means of bolts 7 engaging slots 8 in said foot plate.

The mold tables are each formed of a pair of plates spaced apart on the bed plate A to form between them a central opening 9 to receive the mold bottom, :1 slideway 10 extending forwardly to permit the mold bottom to move out to discharge the product and a rearward opening 10 for the escape of glass fragments to prevent clogging. The mold table plates are adjustably mounted on bed plate A b means of pins (1 extending through ho es in the plates and holes in the bed plate.

The mold members are rovided with outwardly extending pierce ears 13 to which are pivotally connected the bushing members Ii. 15 are connecting rods whose outer ends are threaded and extend through said bushings. Nuts 16 are screwed up on said rods against the ends of said bushings to hold the rods in any adjusted position therein.

E and E represent a. pair of compressed air cylinders which control the opening and closing of the molds C and C, respectively. The pistons of said cylinders are provided with piston rods 17 which extend through the stufiing boxes 18 and have their outer ends secured between the twin bars 19 which form cross heads. Said bars are notched to seat said piston rods which are held in place by means of bolts QO eXten dmg through the bars 19 at either side of the piston rods and through filler blocks .21, and also by pins '2' extending through said bars 19 and engaging notches in the piston rods.

The inner ends of the connecting rods 15 are provided with horizontal loops or eyes which are inserted between the bars 19 and engaged by pins 23 depending through holes 24 in the cross heads. Holes at various distances from the center of the cross heads are provided for adjustment of the connecting rods.

It is thus seen that by adjusting the connecting rods either by means of the nuts 16 or on the cross-heads, the proper amount of throw may be obtained to open or close any character of hinged molds. The mold plates may be shifted for further adjustment.

F is a four way valve mounted on the under side of the platform B.

25 is a pipe connecting said valve with the compressed air supply pipe 26. '27 is a branched pipe which connects one of the outlet ports of said valve with the front end of the cylinder E and the rear end of the cylinder E and 28 is a similar pipe which connects the other outlet port of said valve with the rear end of the cylinder E and the front end of the cylinder E. The pipes 25, 27 and '28 are preferably provided with inset sections of flexible hose to permit the platform B to be raised or lowered without disturbing the piping connections.

29 is a link ivotally attached to the eccentrically place wrist in 30 on the protruding valve plug 31 of t e valve F, and extending up through a slot in the platform B. The upper end of the link 29 is pivotally connected to one end of the treadle 32 which is pivoted intermediate of its ends on the platform B. It is eviden t that when one end of the treadle 32 is stepped on by one of the blowers, the valve plug will be thrown in one direction, and when the other blower, standing at the side of the first blower steps on the other end of the lever, the valve will be thrown in the opposite direction. As will be seen by the arrangement of the piping, a. movement of the valve admits air into the front end of one of the cylinders and the rear end 0 the other cylinder, and vice versa, the opposite end of the cylinder being connected to waste.

Thus when the blower who stands on the platform over the mold C ste s on the treadle, the mold C is closed and t e mold C is opened, and when the second blower who stands on the platform over the mold t." steps on the other end of the treadle, the mold C is closed and the mold C is opened.

Thus as the gatherer hands a pipe with a quantity or gather of glass depending from its end to one of the blowers, said blower centers his pipe and steps on the treadle and closes his mold, and then proceeds to blow the glass to form. the other mold opening at the same time for the discharge of the article just previously blown in the last named mold. The blowers are thus alternately handed pipes and the alternate operation of the molds is continuous.

I will now proceed to describe the means for extending and retracting the mold bottoms when the molds are open.

(it is an automatic valve associated with the mold C and G is a similar valve associated with the mold C. The construction of said valves is identical and is shown in section in Fig. 5.

Said construction is as follows:

33 is a cylindrical casing closed at its ends by heads 3% and 35 which are provided with threaded axial ports 36 and 37, respectively. 38 is a large threaded port in the center of the casing 33 connected by a branch pipe 39 to the compressed air supply pipe 26. In the opposite side of the casing 33 from the supply port 38 are twin outlet ports 40 and 41, one on either side of the axis of the port 38. Between said ports *0 and 41 said casing is provided with an open waste port 4;.

43 is a valve body sliding in the casing 33 and provided in its ends with chambers H and 45 which are connected centrally by means of an open chamber to always in communication with the supply port ie. The chamber -H is provided with a port 5, which, when the valve body is moved to the right end of the casing, registers with the port 40, thus admitting pressure to said port from the supply ipe 39. -18 is a similar port in the wall 0 chamber 45 which, when the valve body is moved to the left end of the casing, as shown in Fig. 5, registers with the ports 41, thus admitting pressure to said last named port. 49 is an open passage or recess cut in the exterior wall of the valve body and adapted to connect one of said ports 40 or 41 with the waste port +2. when the other port, 40 or 41, is connected to pressure as above described. Thus when one of the said rts 40 or 41 is receiving compressed air from the supply port 38, the other of said pair of ports 15 connected to waste for the relief of pressure.

The chamber 44 is rovided with a small bleeding port 50 disc arging into the left end of the casing, while the chamber 45 is provided with a similar port 51 dischar ing into the other end of the casing. T ese bleeding ports are. to permit pressure to be established in the ends of the casing gradually.

H and H represent a pair of com ressed air cylinders which operate the mo (1 hottoms, and are located, respectively, under the cylinders E and E, and which are respectively connected to the automatic valves G and G. Thus the pipe 52 connects the port l0 of the automatic valve with the front end of its compressed air cylinder and a similar pipe 53 connects the port ll of the automatic valve with the rear end of the cylin er.

5* is the piston in each of the compressed air cylinders and 55 the piston rod extending out through the stutling box 56.

I and I represent two bleeders which are connected, respectively, by the pipes 57 with the ports 36 of the valves G and G. J and J are also bleeders which are connected, respectively, by the pi es 58 with the ports 37 of the valves G an G.

Said bleeders are of similar construction, as shown in Figs. 4 and 6, and consist of a cylindrical casing 59 having one end threaded to receive a bushing 60 whose bore is also threaded to receive the end of the connecting pipe 57 or 58, as the case may be. Toward the other end, the bore of the casing iscontracted to form a seat for the ball valve 61 which is normally kept seated by the helical spring 62 bearing against the inner end of the bushing 60. Beyond the valve seat the bore of the casing is provided with a radial waste port 63. For convenience, said port runs diametrically through the casing and the lower end is threaded to receive the bolt 6-1, by means of which the "bleeder is secured in place on the bed plate A. Beyond the waste port 63, the bore of the casing is contracted to form a slide hearing for a lunger 65 whose inner end is headed to bear against the ball while its outer end protrudes from the casing to be struck by a moving element of the mechanism. It is evident that a blow against the outer end of the plunger 65 will drive the same inwardly, thus unseating the ball valve and relieving the pressure in the pipe connected to the bleeder.

The.bleeders I and I are similarly situated with relation to the cylinders E and E, respectively, while the bleeders J and J are similarly situated in relation to the cylinders H and H, respectively.

I will therefore describe the operation of the bleeders I and J.

The bleeder I is mounted on a portion of the bed late A with its plunger extending toward t e front of the machine so that the latter will be struck by a finger 66 ivotally mounted. so as to swing upward y, on a bracket 67, depending from the cross head 19. The contact endof said finger is provided with a bevel 68, which after the finger has met and pushed the plunger inwardly and opened the bleeder, strikes against the ncline plane surface 69 of the bleeder casmg, throwing the finger upwardly out of contact with the plunger of the bleeder as the cross head continues to move inwardly, and permitting the bleeder to close, having remained open but a moment.

The bleeder J is placed with its plunger turned rearwardly of the machine in the path of the end of the piston rod 55 so that as said piston rod approaches the outward limit of its stroke, it will ush the said plunger rod inwardly and ho d the bleeder open until the piston rod begins its inward movement.

Attached to either side of the outer end of the piston rod as by means of cross bolt 70, are parallel links 71, which slide in a channel 72 in the bed plate A and have pivoted between their outer ends. as by means of a cross bolt 73, the pierced depending ear 74 of the slide 75 which moves in the slideway 10 of the mold table and rests on the bed plate A, spanning the channel 72. The edge of the bed plate A is beveled off at the front on either side of the channel 72 to form inclined tracks 76 which are engaged by the slide 75, as it reaches the front of the bed plate, and tilts said slide forwardly and downwardly.

Integral with the slide 75 is the mold bot tom 77, which when the mold is closed, seats with the slide 75 in the opening 9 in the mold table and which, when the mold opens, moves forward with the slide 75 along the opening 10, and tilts with said slide 75.

The mold bottom is undercut, as at T8, to

fit into the corresponding recess 79 of the mold halves, thus making a tight joint and pro erly alinin the parts.

e action 0 a mold and its bottom, such as mold C, is as follows:

When the control valve F is thrown to open the mold C, compressed air is admitted to the front end of the cylinder E through the pipe 27 and the pressure exhausted from the other end of the cylinder through the pig 28 and the waste port of the valve F.

has the piston in the cylinder E will move rearwardly drawing with it the cross head 19 and thus opening the halves of the mold C. As the cross head moves inwardly, the pivoted finger 66 will, when the mold is almost completel 0 en, drive inwardly the plunger of the b ee er 1, opening its waste port 68 and thus exhausting the pressure against the valve bod 43 in the forward end of the casing 33 o the automatic valve G. This will permit the unrelieved pressure in the rear end of the valve G casing to move the valve body 43 to the front end of the casing, thus registering the ports 48 and 41 and admitti compressed air through the pipe 53 into e rear of the com- Lil pressed air cylinde H. thus driving the piston 54 toward the front end of the cylinder. The advance of the piston rod 55 carries with it the links 71, the slide and the mold bottom 77. As the slide and mold bottom approach the outward limit of their travel, they tip, following the downward incline of the trackways 76, thus discharging the blown glass article standing on the mold bottom into a sand box or other receptacle. A bracket may be attached to the front of the bed plate A at the mouth of the channel 72 to limit the downward drop of the slide and the mold bottom.

It will be noted, however, that the driving in of the plunger of the bleeder I by the finger 66 is but momentary, as the incline plane 68 on the finger contacts with the incline plane on the bleeder casing and throws the finger upwardly out of contact with the plungerand permits the latter to fly outwardly again as the spring 62 closes the waste port 63 by the ball valve 61.

The result is a cessation of the relief of pressure in the front end of the bleeder valve G and the restablishment of pressure therein through the small port 50.

WVhen the piston rod 55 approaches the end of its outward stroke, previously described, its end strikes and drives inwardly the plunger of the bleeder J, thus relieving the preure in the pipe 58 and in the rear end of the valve G. The pressure now accumulated in the front end of the valve G through the port 50 will then cause the valve body 43 to move rearwardly in the casing 33, thus registering the ports 40 and i7 and admitting pressure through the pipe 52 into the forward end of cylinder H, driving back the piston 54 and thereby returning the slide 7 5 and the mold bottom 77 into their proper place for the blowing operation. The retreat of the piston rod 55 will permit the bleeder J to close, thus ermitting pressure to be reestablished in t e rear end of the casing 33 of the valve G through the port 51,

It will be understood that the-action of bleeders I and J in controlling the valve G, and thus operating the cylinder H to extend and retract the bottom of the mold C is identical to that just described in connection with the bleeders I and J.

It is thus seen that when one of the molds is opened by the operation of the valve F, its bottomis forthwith automatically extended, the blown article discharged and the mold bottom returned to place before the mold is again. closed by the operation of the control valve. Thus the mold bottom is returned into blowing position before the mold is again closed, thereby enabling the blower to properly center his punty or blow pipe before closing the mold.

As has been previously explained, the control valve is connected with the cylinder E in a manner just the reverse to its connection w th the cylinder E, so the throwing of said control valve in either direction will open one of the molds, and cause its bottom to be extended and then returned to position. and simultaneously will close the other mold.

Thus, in the operation of the machine, two glass blowers stand side by side on the platform B, one above each mold, and the boy hands pipes to the blowers alternately. The one blower as he receives a pipe, with the gather of glass pendant therefrom, centers the pipe over the bottom of his mold, which mold is open and the other mold closed, and then steps on the treadle 32. thereby throwing the control valve so that his mold is closed while the other mold is opened, and its bottom extended to discharge the article last blown and then returned at once to place. The first blower then blows his gather into a finished article and detaches his pipe from the article. by which time the second blower has received a pipe from the boy and centering the gather over his mold bottom, steps on the treadle 32. thus throwing the valve F in the opposite direction, thereby closing his own mold for the blow ing operation and opening the mold of the first blower and discharging its contents.

It is thus evident that as each blower re ceives a fresh pipe and closes his mold, he opens his companions mold and discharges its contents, thus keeping the machine in continuous but alternate operation.

Thus a great saving of time is effected as the machine may be operated as fast as a boy or boys can alternately supply the two blowers with pipes with pendant gathers of glass.

While, for the sake of illustration, I have shown my invention applied to a glass blowing machine, it is evident that the same may be applied to any sort of a glass forming, either pressing or blowing, machine which may be non-automatic, partially automatic. or entirely automatic.

\Vhat I desire to claim is:

1. In a machine for the manufacture of articles from glass, a pair of hinged molds. a compressed air cylinder for each mold adapted to open and close the latter, and a commpn control valve connected in an opposite manner to the two air cylinders whereby a movement of said valve causes one of said molds to open and the other mold to close, for the purposes described.

2. In a machine for the manufacture of articles from glass, 9. pair of hinged molds. a compressed air cylinder for each mold adapted to open and close the latter, a common control valve connected in an opposite manner with the two air cylinders whereby a movement of said valve causes one of said molds to close and the other mold to open, movable bottoms for said molds, and means whereby when one of the molds is opened, its bottom. is shifted for the discharge of the product and returned to its place, for the purposes described.

3. In a machine for the manufacture of articles from glass, a pair of hinged molds, a compressed air cylinder for each mold having its piston operatively connected to the latter whereby said mold may be opened and closed, a common control valve for said cylinders oppositely connected to the same whereby the same movement of said valve will cause one of said molds to open and the other mold to close, and vice versa,movable bottoms for said molds adapted to be shifted for the discharge of the product, a compressed air cylinder for each mold bottom havingits piston operatively connected to the mold bottom, and means whereby when air is admitted to one of said first named cylinders to open a mold, air is automatically admitted to the corresponding one of the second named cylinders first to shift the mold bottom out of position to dischar e the product and then to return the mold bottom into position, for the purposes described.

4. In a machine for the manufacture of articles from glass, a pair of hinged molds, pressure actuated means for alternately opening and closing said molds, movable bottoms for said molds, pressure actuated means for shifting said bottoms into and out of position relative to said molds. and means whereb said second named means are actuate by said first named means when said molds are respectively opened, for the purposes described.

5. In a machine for the manufacture of articles from glass, a hinged mold, a pressure cylinder mechanism controlling the opening and closing of said mold, a movable bottom for said mold. a second pressure cylinder mechanism controlling the movement of said bottom into and out of position, an automatic valve controlling the admission of pressure into the second named cylinder, and bleeders connected to said automatic valve interposed in the path of movmg parts whereby when said mold is opened, said mold bottom is first moved out of place to discharge the product and then returned to place again, for the purposes described.

6. In a machine for the manufacture of articles from glass. a hinged mold, a pressure cylinder mechanism controlling the opening and closing of the mold, a movable bottom for said mold. a second pressure cylinder mechanism controlling the movement of the mold bottom. an automatic valve controlling the admission of pressure to said second named cylinder, a bleeder interposed in the path of the mold opening mechanism and adapted to actuatesaid automatic valve to admit pressure into said second named cylinder to extend the mold bottom, and a second bleeder interposed in the path of the bottom shifting mechanism and ada ted to actuate said automatic valve to a mit pressure into said second named cylinder to return said mold bottom to position.

7. In a machine for the manufacture of articles of glass, the combination of a hinged mold, means for opening and closin said mold, a sliding bottom for said molt means for operating said bottom, a bleeder controlling the action of said last mentioned means, a spring actuated plunger protruding from said leeder, and a pivoted striking finger carried by said first mentioned means and adapted to drive said plunger inwardly to open said bleeder during the operation of opening said mold, said finger being (provided with an incline surface adapte to contact with said bleeder whereby said finger is thrown out of engagement with said plun er after temporary contact therewith, for t e purpose described.

Signed at Pittsburgh, Penna, this 26th day of April, 1917.

WILLIAM J. MILLER.

Gain of thll potent may be obtained tor five cents each, by addressing the "commissioner 0! Estate, Washington, D. 0.

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