US811320A - Glass-press. - Google Patents

Description

PATENTED JAN. 30, 1906.

5 SHBETS-SHEET 1.

INVENTOR W. I, PBRMAR. GLASS PRESS. APPLICATION mam AUG.14. 1905.

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W. I. PERMAR. GLASS PRESS. APPLIOATION FILED AUG. 14, 1905.

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IMVENTOR Mal-1A 17M WITNESfiES @MLEM PATENTED JAN. 30, 1906.

W. I. PERMAR. GLASS PRESS. APPLICATION FILED AUG.14. 1905.

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m WM %4 No. 811,320. PATENTED JAN. 30, 1906. W. I. PERMAR. GLASS PRESS APPLICATION FILED AUG.14. 1905.

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WILLIAM I. PERMAR, OF ROCHESTER, PENNSYLVANIA, ASSIGNOR TO NATIONAL GLASS COMPANY, OF PITTSBURG, PENNSYLVANIA, A CORPORATION OF PENNSYLVANIA.

GLASS-PRESS.

Specification of Letters Patent.

Patented J an. 30, 1906.

Application filed August 14, 1905. Serial No. 274,062.

To all, whom it may concern:

Be it known that I,WILLIAM I. PERMAR, of Rochester, in the county of Beaver and State of Pennsylvania, have invented aGlass-Press, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming part of this specification, in which- Figure 1 is a side elevation, partly broken away, of apparatus embodying my invention. Fig. 2 is a front elevation of the same. Fig. 3 is a top plan view. Fig. 4 is a plan view, partly in section, on the line IV IV of Fig. 1. Fig. 5 is a detailed view of the parts operating the valve, the cam-yoke being shown in section. Fig. 6 is a face view of the cam yoke and the parts operating the same. Fig. 7 is a detail view of the trip mechanism for operating the table. Fig. 8 is a detail view of the friction-clutch which serves to rotate the table. Fig. 9 is a detail view of the de vice for lifting the ware from the mold.

My invention relates to that class of glass presses in which the molds are mounted on a rotatory table which is adapted to be rotated intermittently and in which the plunger is caused to enter the molds and to be retracted therefrom after they have been brought into position below the plunger by the rotation of the table; and it consists in devices for rotating the table and reciprocating the plunger automatically, in devices for rotating and locking the table in position, and in devices for starting the table and plunger both automatically and by hand.

I will now describe my invention, so that others skilled in the art may manufacture and use the same.

In the drawings, 2 represents a truck upon which the press is mounted, which truck is provided with wheels 3 for the purpose of enabling the press to be moved from one part of the factory to another. Fixed to the truck 2 is the annular bed-plate 4, to which the vertical central standard 5 is secured. Mounted on the annular bed-plate 4 is the rotatory'table 6, supported by ball-bearings 7 in a race 8,

which is formed in the upper face of the bedplate 4. A guide -ring 9 extends downwardly from the rotatory table 6 within the circular bedplate 4 and serves to retain the rotatory table in position on the ball-bearings 7.

- Secured to and encircling the table 6 is a rack-gear 10, which is in mesh with the pinion 11, which pinion is keyed to the vertical hollow shaft 12, loosely mounted within which shaft and free to rotate therein is the solid shaft 13. Secured to the lower end of the shaft 13 is the bevel gear 14, which meshes with a bevel-pinion 15 on the horizontal power-shaft 16. This shaft 16 is mounted in the bearings 17 and carries at its other end the gear-wheel 18, which meshes with the pinion 19 on the electric or other motor 20. The bearing 17 is formed in the depending bracket 21, to which bracket the motor is secured, and this bracket 21 is secured to or made a part of the truck 2.

The motor 20, through the pinion 19, gearwheel 18, shaft 16, pinion 1 5, and bevel-gear 14, imparts a positive continuous rotatory -movement to the soild shaft 13. A rotatory movement is imparted from the solid shaft 13 to the encircling hollow shaft 12 by means of the friction-clutch 23, which is keyed to the solid shaft 1.3 and carries the hard wood blocks 25, which bear against the spider 24, interposed between the clutch 23 and the lower face of the pinion 11, which pinion meshes with the annular rack 10 on the periphery of the table 6, as has already been described. The table 6 is normally held stationary by the spring-pressed locking-bolt 65, which prevents the table when so held from being rotated by the friction-clutch 23, shaft 12, and pinion 11.

Keyed to the upper end of the solid shaft 13 is the miter-gear 27, which meshes with the miter-gear 28, that is keyed to the end of the horizontal shaft 29. This shaft 29 is mounted in suitable bearings depending from the cross-bar 30, which is secured to the top of the central standard 5. Feathered on the shaft 29, near the outer end thereof, is the sleeve 71, carrying the cam-finger 31, which operates within the cam-yoke 32 to raise the valve-stem 33 at intervals determined by the movement of the cam-finger as it comes in contact with the upper surface of the yoke 32, which is slidably mounted in the frame 57. This valve-stem 33 is secured at its upper end to the yoke 32 and at its lower end to a valve in the valve-chamber 34, which valve serves to control the admission of compressed air to the cylinder 35. WVithin the cylinder 35 is a piston 36, having a piston-rod 37. Secured to the lower end of the piston-rod 37, outside of and below the cylinder 35, is a springplate 38 and cross head 39, which cross-head is arranged to slide vertically in the guides 40. A lower spring-plate 41, carrying the mold-ring 42, is supported by the rods 43, which slide within the plate 38 and are provided with adjusting-nuts 44 on their upper ends above the plate 38. Between the plates 38 and 41 and surrounding the rods 43 are springs 45. The purpose of this arrangement of these spring-plates is to permit the plunger 47, which extends downwardly from the plate 38, to have a continued downward movement against the upward pressure of the springs 45 after the mold-ring 42 is seated on the mold. This continued movement of the plunger 47 completes the pressing within the cavity of the mold.

In pressing glass it is desirable that the first movement of the plunger should be cushioned until after the mold-ring becomes seated and that the remaining movement of the plunger should be a positive one. To accomplish this, I employ a valve 48, arranged in the exhaust-pipe 49, which valve serves to check the exhaust of air from the path of the piston 36 in the cylinder 35, and thus cushions the first portion of the downward stroke of the piston and the parts operated thereby. This valve 48 is operated bymeans of a finger 50, which is so secured to the spring-plate 41 as to contact with the cam-face 51 on the lower end of the lever 51. This lever 51 is pivoted at or near its center to the bracket 52, which may be secured to any stationary part of the apparatus. The upper end of the lever 51 is pivoted to the link 53, which link is pivoted to the free end of the arm 54, which is secured to the stem 55 of the valve 48. This valve 48 remains normally partially closed and is in this position during the first portion of the downward movement of the piston 36, checking the escape of air from the cylinder 35 and cushioning the mold-ring 41 as it is seated on the mold. The finger 50 now comes in contact with the cam 51 of the lever 51, and by moving the lever completely opens the valve 48, releasing the air in the bottom of the cylinder 35 and permitting the piston 36 to descend unchecked under the pressure of the air in the upper portion of the cylinder and to carry the plunger 47 to the completion of its downward movement in the cavity of the mold. Upon the disengagement of the finger 50 and cam-surface 51 the weight of the lever 51 will return the valve 48 to its normal partially-closed position, or, if found desirable, a spring or other device may be provided for such purpose.

The slide-valve within the valve-chamber '34 may be of any desired construction.

After the glass has been pressed in the mold in the manner described the upward movement of the piston 36 and its depending parts is effected by the admission of compressed air to the lower end of the cylinder 35. This admission takes place as soon as the slide-yoke 32 is released by the cam 31, the slide-yoke being depressed by the spring 56, which is interposed between the fixed plate 56 and the top of the yoke 32, and the rod 33, operating the valve in the valvechamber 34, reverses the passage of compressed air to the cylinder 35.

In the operation of my press a number of molds are arranged on the table 6 at equal fixed distances apart, the molten glass is placed in a mold at a station in advance of the pressing station, the table is given a partial rotation by the shaft 12 and pinion 11 in the manner hereinafter described, and the glass is pressed in the mold by the downward movement of the piston 36. has been pressed in the mold as the piston 36 ascends under the force of the compressed air in the lower portion of the cylinder 35 a pawl 59, pivoted to an arm 58, extending from and secured to the pist0n-rod 37, comes in contact with a finger 60, which is pivoted to the standard 5 and carries the vertical rod 61. This rod 61 is pivoted at its lower end to the After the glass,

arm 62, the other end of which is secured to r the rock-shaft 63. Secured to the other end of the rock-shaft 63 is the arm 64, to which is pivoted the spring-pressed locking-bolt 65. This spring-pressed locking-bolt is arranged to engage with a series of recesses 96, formed in the bottom face of the table 6, and serves to lock the table and hold it in a stationary position during the pressing of the glass. T/Vhen, however, the pawl 59 in its ascent with the piston-rod 37 comes in contact with the finger 60, the free end of the finger is raised, and thereby the rocking shaft 63 is momentarily turned by the rod 61, which rocking movement withdraws the bolt 65 from its seat in the recess 96, unlocks the table, and permits the table to rotate under the power of the clutch 23, hollow shaft 12, and pinion 11, working in the rack 10, until. the next of the recesses 96 is brought over the locking bolt 65. The spring 65" of this locking-bolt then forces the bolt into the recess 96, and the table 6 is held from further rotation until the piston-rod 37 completes its upward movement, again descends, and again rises to again release the locking-bolt. Thispartial rotation of the table, however, is suflicient to carry the mold containing the pressed glass away from the plunger and to bring a fresh mold which has been filled with molten glass into position for pressing.

The pawl 59 being pivoted is free to move downwardly past thefinger 60 with the downward movement of the piston-rod 37.

In the drawings the table 6 is shown having six molds mounted thereon at equal dis tances apart. The rack 10 and pinion 11 are so proportioned to each other that the table shall make one-sixth of a complete rotation with each rotation of the pinion 11 and shaft 12, and the recesses 96 in the table 6 are at such distance apart that the table shall be looked as each mold is brought under the plunger 47. I do not desire, however, to limit myself to any number of molds or to any size or shape of the different parts of the apparatus.

As the shaft 29 is positively geared to the positively-rotating shaft 13 and as the shaft 12, carrying the pinion 11, is rotated by a friction-clutch which may slip and lose motion, it is necessary to provide means to so regulate the downward. movement of the plunger 47 that it shall descend only when the mold is directly beneath the plunger and the table is in itslooked position. To accomplish this, I provide means for holding the cam 31 out of engagement with the yoke 32 until such time as the table has completed its partial rotation and comes to a full stop beneath the plunger 47, as follows: As already described, the cam 31 extends from the sleeve 71, which is so feathered to the shaft 29 as to be slidable thereon. Secured to the top of the hollow shaft 12 is a cam 66, which cam engages with a vertical pin 67 on the end of the horizontal spring slide-bar 68, which bar is suitably supported below and parallel with the shaft 29. At or near the other end of the bar 68 is an upwardly-extending arm 69, that so engages with a collar of the sleeve 71 that the sleeve shall be slid on the shaft 29 with the movement of the bar 68, and thus throw the cam-arm 31 in and out of the yoke 32. Within the cam 66 is an offset or cutaway portion 72. Normally the cam 66 and rod 68 hold the cam 31 in a position outside of the yoke 32that is, during the period that the shaft 12 is making its rotation in im parting the rotatory movement to the table. As this rotation of the shaft 12 and cam 66 is completed the recess 72 comes opposite the pin 67, and as at the same time the table 6 becomes stationary the pin 67 enters the recess under the force of the spring 73 and the bar 68 carries the cam-arm 31 within the yoke, Where its rotation operates the valve-rod 33 to admit air to the cylinder 35 in the manner already described. As soon as the pressing operation .is completed the piston-rod 37 ascends, unlocking the table and permitting the shaft 12 to rotate, this rotation causing the cam 66 to draw the bar 68, and thus again automatically withdraw the cam-arm 31 from the yoke 32. The cam-arm 31 may also be thrown out of the yoke 32 at any time desired by means of a hand-lever 80. To this end a disk 75 is keyed to the bar 68 in such position as to be engaged by a finger 76 on the end of the horizontal rock-shaft 77,

which is supported in suitable bearings. A miter-pinion 78 on the end of the rock-shaft 77 engages a similar pinion on the vertical rook-shaft 79. The hand-lever 80 is secured to the vertical rock-shaft 79 at a point con venient to the hand. of the operator. By moving the hand-lever the rook-shaft is given a partial rotation which throws the cam-arm 31 out of the yoke 32, and by this means the operator may at any time stay the downward movement of the plunger 47.

After the ware has been pressed in the mold and the mold moves from the station at which the plunger is located the pressed article may be lifted automatically in the moldcavity by the lifting-rods 81, which are vertically and slidably' fitted in openings in the table 6 at the center of the moldseat, the lower end of the lifting-rod projecting below the table and being provided with rollers 82, while the upper end of the rod may be flush with the upper face of the table. In the path of the lower ends of the rods 81, beyond the pressing-station, is an inclined track or way 83, leading to an elevated way. As the rods 81. ride up this way the upper. end of the rod raises the mold-bottom 84 and the pressed glassware sufficiently to allow of it being readily removed from the mold either by hand or by automatic devices.

Although I have shown my invention adapted to presses for the manufacture of tumblers, it may be applied to other apparatus for pressing glass.

The advantages of my invention which result from the devices which enable the glass to be pressed continuously and automatically by cushioned and positive pneumatic pressure, devices by which the table is driven intermittently by secondary power, devices by means of whichthe movement of the press is automatically regulated to be in unison with the movement of the table, and in devices by means of which the movement of the press may be controlled by hand, will be ap preciated by those skilled in the art.

Having thus described my invention,what

I claim, and desire to secure by Letters Patcut, is

1. In a glass-press, the combination of a power-shaft, a rotatable table adapted to carry molds, a plunger and devices for reciprocating the same, devices for rotating the table, and frictional mechanism arranged between said table-rotating mechanism and said powershaft; substantially as specified.

2. In a glass-press, the combination of a power-shaft, a rotatable table adapted to carry molds, a plunger and devices for reciprocating the same, devices for rotating the table, devices for locking the table, and friction devices arranged between said table-rotating mechanism and said power-shaft, substantially as specified.

3. In a glass-press, the combination of a rotatory mold-table and devices for imparting a rotatory movement thereto, a reciprocating plunger, a fluid-pressure cylinder and piston for reciprocating the plunger, a valve for admitting fluid-pressure to the cylinder, devices for operating the valve, and a checkvalve for checking the exhaust during a portion of the stroke of the piston; substantially as specified.

4. In a glass-press, the combination of a rotatory mold-table and devices for imparting a rotatory movement thereto,-a reciprocating plunger, a fluid-pressure cylinder and piston for reciprocating the plunger, a valve for admitting fluid-pressure to the cylinder, devices for operating the valve, a checkvalve for checking the exhaust during a portion of the stroke of the piston and devices for operating the check-valve; substantially as specified.

5. In a glasspress, the combination of a rotatory moldtable, devices for rotating the table, friction devices for communicating power to the table-rotating mechanism, a reciprocating plunger and devices for intermittently reciprocating the same, devices for locking the table, devices connected with the plunger for operating the lock, and devices for intermittently throwing the mechanism for reciprocating the plunger in and out of connection with power mechanism; substan tially as specified.

6. In a glass-press, the combination of a rotatory mold-table, a reciprocating plunger, mechanism for operating the plunger, a positively-driven shaft for communicating power to start and stop the mechanism for operating the plunger, a hollow shaft surrounding the first shaft, a pinion fixed to the hollow shaft, a rack fixed to the table and meshing with the pinion, and a friction device for communicating power from the positivelymoving shaft to the hollow shaft; substantially as specified.

7. In a glass-press, the combination of a rotatory mold-table and devices for rotating the same, power mechanism, a plunger and fluid-pressure devices for operating the plunger, a check-valve for checking a portion of the movement of the plunger, and devices for throwing the fiuid-pressure-operating de vices in and out of connection with the power mechanism; substantially as specified.

In testimony whereof I have hereunto set my hand.

WILLIAM I. PERMAR.

WVitnesses:

C. E. EGGERS, H. M. CoRwIN.

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