US779089A - Glass-blowing machine. - Google Patents

Description

No. 779,089. PATENTED (IAN. 3, 1905.

R. J. MAIN.

GLASS BLOWNG MACHINE.

APPLICATION FILED JUNE 23.1904.

` 4 SHEETS-SHEET 1.

No. 779,089. l PTENTED JAN. 3, 1905.

II. I. MAIN. GLASS BLOWIIIG MACHINE.

APPLIOATION FILED JUNE 23,1904.

4 SHEETS-SHEET 2.'

IL. MII

; 131g, a. I i 64 i 1 nl n I. 82l 16 80 1 IlIE t 78 I 3 14 I 28- 486 I||I o! d4" I 36/ I I I Il,

I I I I No. 779,089, A l PATENTED JAN. 3, l905. R. J. MAIN.

GLASS BLOWING MACHINE.

APPLICATION Hmm JUNE 23.1904. ,5, mms-SHEET s.

me/.am i i Robert J. Mam,

' l; ff Y PATENTBD JAN. 3, 1905.

R. J. MAIN.

GLASS BLOWING MACHINE.

AE'PLIOATION FILED JUNE 23.1904.

4 SHEETS-SHEET 4.

@140cm/ko@ Robert J. Main.

By MM A @Hoz/112W UNTTED STATES Patented January 3, 1905.

ROBERT J. MAIN, F SWAYZEE, INDIANA.

GLASS-BLOWING MACHINE.

SPECI]. `IGA'IIOI\Tv forming part of Letters Patent No. 779,089, dated January 3, 1905.

Application tiled June 2S, 1904. Serial No. 213,853.

To 1,7/ whom, it may concern:

Be. it known that I, ROBERT J. MAIN, a citizen of the United States, residing at Swayzee, in the county of Grant and State of Indiana, have invented certain new and useful Im provements in Glass-BlowingIMaChineS, of which the following' is a specification.

In the operation of glass-blowing machines of that type in which there is a plurality of molds each provided with a primary or pressing bottom and a secondary or blowing' bottom it is desirable that means be provided for automatically throwing the pressing-bottom into operative and receiving position and means permitting the withdrawal oi a preceding pressing-bottom from the mold immediately after the pressing action has taken place and also to providemeans for automatically reciprocating the pressing' and blowing heads.

The objects of my invention are to provide a valve arrangement such that by means of a single lever the operator may cause the automatic operation of the means for throwing the pressing-bottom to receiving position and to automatically control the movement of the pressing-head and the blowing-head, the movement ot' the blowing-'head automatically controlling the flow of air therethrough; to provide means by which the press-mold may be transferred from receiving the pressing position and supported during the pressing action; to provide means by which the operator may easily withdraw the press-mold-supporting means at the proper time, and to provide such improvements in details as shall be hereinafter pointed out.

In the drawings, Figure 1 is an elevation, in partial section, of my improved machine. Fig. 2 is an elevation, also in partial section, at about ninety degrees from Fig. 1. Fig. 3 is a sectional detail of my improved valve mechanism in normal position; Fig. 4, a similar view with the parts in position immediately prior to the admission of motive fluid to the presser-head motor and immediately prior to the automatic return of the valve mechanism for the primary-bottom-operating motors. Fig. 5 is a plan beneath the rotating table, and Fig. 6 is a section on line 6 6 of Fig. 5.

In the drawings, 10 indicates a suitable main frame upon which is mounted a moldcarrying table 11 which turns `in ahorizontal plane and which is provided with a plurality ot' mold and bottom receiving portions 12, only one of these being shown in Figs. 1 and 2, as these portions are of ordinary construction. The usual blow-bottoms are of course used in conjunction with the molds; but as these are of ordinary construction I have purposely omitted them from the drawings in order to avoid confusion. Arranged in each receptacle 12 so as to be reciprocable therein vertically is a primary or pressing bottom 13, which at its lower end is provided with a depending stem 14. Secured to the main frame 10 above the table 11 is a vertical stem or other suitable motor-cylinder 15, provided with a reciprocating piston-rod 16 and suitable admission and exhaust ports of any desired form. Secured to the lower end of piston-rod 16 is a pressing-head 17 and a moldcap 18, the mold-cap being spring-supported upon the presser-head 17 in the usual welllrnown manner to permit movement of the presser-head after the cap has engaged the mold to close the same. Immediately beneath the piston-rod 16 and beneath the table 11 is a cylindrical guide 19, having a vertical slot 19 formed through the wall, to permit passage ot' any stem 14. Mounted in the lower end of guide 19 is a buffer 20, normally held up by a spring 21. Buifer 2O has a depending pin 22, which engages the bed-plate to prevent the press-mold from hitting the guidering 23, carried by table 11.

Arranged beneath table 11 a distance angularly from guide 19 equal to the angular distance between two molds on table 11 (or any desired multiple of that distance) is a motor-cylinder 24, in which is arranged a piston and piston-rod 26, which projects upward through the head of the cylinder and is adapted to engage a plug 27, which normally lies at the bottom of a cylindrical guide 28, secured to the upper enol of cylinder 24.

The guide 28 projects upward a short distance above the to'p of guide 19 and has formed in its rear side a vertical slot 28@ which eX- tends down a short distance below the normal IOO position of the upper face of plug 27 in order to permit the entrance of any one of the pressmold stems 14. Pivoted to the forward side of -guide 28 is a horizontally-swinging bridgeplate 29, which is adapted to bridgethe space between guide 28 and guide 19, the free end of the bridge-plate lying on top of the guide 19. Bridge 29 is provided witha cam 30, arranged to be engaged by any one of a series of pins 31, depending from the lower end of each of the lock-yokes 32, carried by table- 11.

Arranged adjacent guide 19 is a lockingplunger 33, which is normally urged upward by a suitable spring 34. This locking-plunger is adapted to enter one of the lock-yokes 32, and thus hold table 11 in position where the press-mold, which lies immediately above guide 19, will be in alinement beneath the pressing-head. Plunger 33 may be depressed by means of a suitable foot-lever 35, and this plunger is guided in a suitable bracket 36. Pivoted upon the top of bracket 36 is a latch 37, which is normally urged to the position shown in full lines in Fig. 5 by a light spring 38, and this latch when inthe position shown is adapted to lie on top of plunger 33, and thus hold it in depressed position. Latch 37 is arranged so as to be engaged by each pin 31 at such time that the pin will serve to withdraw the latch from plunger 33 to permit it to enter the perforation in the adjacent lockyoke 32 at the proper time. Pivoted to the side of guide 19 isa lever 39, the upper end of which is adapted to engage the -bridgeplate 29 in order that said bridge-plate may be shifted. The lever 39 carries a pawl 40, having a cam-surface 41, adapted to engage a pin 42, projecting from guide 19. Pivoted upon guide 19 (preferably upon the fulcrum of lever 39)is a lever 43, the free end of which is arranged to engage the pawl 40, so as to swing lever 39 in a direction to cause the withdrawal of the free end of the bridge-plate 29 from above the guide 19. Plunger 33 carries a pin 44, upon which is pivoted an arm or link 45, the free end of which is perforated and adapted to receive a pin 43, forming part of the lever 43, the arrangement being such that a depression of the locking-plunger 33 will cause a movement of lever 43. The parts just described are omitted from Figs. 1 and 2 for the sake of clearness. In order to temporarily hold the plug 27 with its upper end flush with the upper end of g'uide 28 and the upper face ofbridge 29, the said plug is provided with a slight shoulder 27', Fig. 1, and mounted near the upper end of guide 28 is a latch 46, adapted to engage shoulder 27 The latch 46 is normally urged inward by a light spring 47, and the outer end of the latch is connected to lever 48, the upper end of which is arranged in position to be engaged by any one of a series of lugs 49, carried by ring 23 of table 11, so that after mold-stem 14 has passed over upon the bridge-plate 29 the lug 49 will engage lever 48 and withdraw latch 46, so as to permit plug 27 to drop to its normal position.

Leading into the bottom of cylinder 24 is an admission and exhaust port 50, and leading therefrom is a pipe 51, which leads upward to the valve-casing 52. This valve-casing is provided with an admission-chamber 53, into which leads a suitable supply-pipe 54. It is also provided with a discharge-chamber 55, from which the pipe 51 leads. Arranged between chambers 53 and 55 is a valve-seat 56, in which the valve 57 is adapted to seat. Valve 57 is normally urged to its seat by a suitable spring 58 and is provided with a stem the end 59 of which projects from one end of casing 52 to form an operating member for the valve, while the end 60 projects through the head 61 of the casing 52. Head 61 is provided with an exhaust-port 62, which leads from chamber 55 to the interior of the head and is arranged to register when Valve 56 is seated with the inner end of the exhaust-passage 63 formed in stem 60.

The passage of motive fluid into and out of the opposite ends of cylinder 15 is controlled by a suitable valve structure 64 of any desired type, the valve-stem 65 of Awhich has attached to it the operating-lever 66. This lever is provided with a segmental slot 67, which at its forward end terminatesin an outwardly-extending portion 67 thus forming a shoulder 67H between the two ends of the slot.

Pivoted to the outer end of valve-stem 59 is a link 68, which at its free end is provided with a pin 69, which fits in the slot 67. Arranged angularly from the presser-head a distance equal to the distance between two molds is a blowing-head 70, which is adapted to be brought down upon the top of a mold containing the pressed glass. The blowing-head 7 O is loosely held upon the lower ball-shaped end of a stem 71, which is vertically reciprocable through a packing-gland 72, carried at the lower end of a cylinder 73. Secured to the stem within the cylinder is a piston 74, provided with a small perforation 75, which thus forms a communication between the two ends of the cylinder. Stem 71 continues upward beyond the piston through a second packinggland 76 and is normally urged upward by a spring 77. Leadinginto the upper end of cylinder 73 is an air-supply pipe 78. The stem 71 is provided with a longitudinal passage 79, which 4registers with the central perforation of the blowing-head at its lower end and at its upper end extends transversely through the stem immediately below the piston 74. Pipe 78 leads from a valve-cylinder 80, within which is mounted a piston-valve 81, arranged to open and close the port at the inner end of the pipe 78. Leading into cylinder 8O is a IOO IIO

suitable supply-pipe 82. Valve 81 is connected by a suitable lever 83 and link 84 with the operating-lever 66.

The operation is as follows: Turning to Fig. 1 and supposing the press-mold shown in section to contain a requisite quantity of glass, the parts are in normal position,`all but one of the external molds having been stripped from the table for the sake of clearness. The operator thereupon grasps lever 66 and draws the same toward him. The first movement of the lever acts through link 68 and stem 59 to open valve 56, at the same time drawing the exhaust-port 63 out of register with-port 62. Air immediately enters pipe 51 and from thence passes to the lower end of cylinder 24, whereupon the piston rises and through the piston-rod 26 throws plug 27 up to the top of guide 28, where it is held in position by the catch 46. This movement of plug 27 throws a press-mold up into receiving position and bringsthe lower end of its stem 14 iiush with the top of guide 28 and bridgeplate 29. At the same time piston-valve 81 is moved so as to open communication to pipe 78, and thus permit air to pass into cylinder 73, thus forcing piston 74down and bringing the blow-head on top of a mold in which glass has been previously pressed. As soon as air enters the upper end of cylinder 73 it of course begins to pass through the perforation 7 5 and passage 79; but this does noty materially affect the glass until the head 7 O comes down into close contact with the top of the mold; but as soon as this occurs a suiiicient amount of air passes through the passages 77 and 79 to expand the glass into the mold. Continued movement of lever 66 brings it into the position shown in dotted lilies in Fig. 4, whereupon pin 69 slips by shoulder 67 and spring 58 acts to close the valve 56, whereupon the pressure in the lower end of cylinder 24 exhausts through pipe 51 and passages 62 and 63, thus permitting the return of piston 25 and piston-rod 26 by their own weight. The plug 27, however, is held up by the catch 46, and thus continues to support the press mold which has just been raised. Further movement of lever 66 opens the valve carried by stem 65 and admits steam or other motive fluid into the upper end of cylinder 15, which causes the downward movement of the presser-head, the pressure on the glass being sustained by the bridgeplate 29. When lever 66 is returned to its normal position, motive Huid is admitted to the vlower end of cylinder 15, the presser-head is drawn upward, and at the end of the return stroke of the lever 66 valve 81 is brought to normal position, so as to cut off the supply of air and the blow-head is raised to normal position by spring 77. rlhereupon the operator steps upon foot-lever 35, thus drawing the locking-plunger 33 downward out of engagement with the lock-yoke 32 and freeing the table, so

that it can be turned by the operator. During the depression of the locking-plunger 33 said plunger operates upon lever 43 to engage pawl 41 and swing lever 39 so as to withdraw the bridge-plate 29 from beneath the lower end of the stem 14 of the mold in which glass has justv been pressed, thus permitting this press-mold to drop by its own weight, the force of the weight being taken by buffer 2O and spring 21 and the pin 22 preventing the mold from striking ring 23, and thus preventing any jar which would result in a crackling of the freshly formed glass. The operator then turns the table 11 so as to swing the stem 14 of the recently-dropped press-mold out of guide 19 through slot 19l and swing the stem of the second following press-mold into guide 28 through the slot 28'. Before the stem of this second mold reaches the guide 28, however, one of the lugs 49 has been brought into engagement with lever 48, so as to with- -draw catch 46 to permit the plug 27 to drop to its normal position, so that the oncoming stem 14 may be swung on top of the plug. The stem 14 of the freshly-filled press-mold slides oii' of plug 27 to the top of guide 28 and from thence to bridge-plate 29, pin 31 of the table engaging the cam 30 of the bridgeplate and swinging the bridge-plate over on top of guide 19, so that the mold is supported by the bridge-plate over the open end of guide 19 at the time when pin 31 engages latch 37 and swings it enough to permit locking-plunger 33 to move upward and engage the table to hold it in proper alinement with the press and blowing heads.

It will be seen from the above that the upward movement of the press-molds in succession, the pressing action, and the blowing action are all accurately controlled by the single lever 66, while the operator controls the withdrawal of the press-mold which has just been used by means of foot-lever. lt will also be noticed that if for any reason there should be a failure of upward movement of the piston 25 the operator may swing lever 66 back to normal and again catch the valve 56 before there is any movement of the presser-head.

l claim as my invention- 1. In a glass-machine, the combination, with the main frame, of a horizontal]y-rotatable table mounted thereon, a plurality of pressmolds carried by said table and each having a depending stem, a pressing-head arranged above said table, press-mold-elevating mechanism arranged beneath said table behind the pressing-head, and a bridge-plate arranged beneath the table and extending from the pressmold-elevating mechanism to a point beneath the pressing-head.

2. In a glass-machine, the combination, with the main frame, of a horizontally-rotatable table mounted thereon, a plurality of press- IOO molds carried by said table and each having n a depending stem, a pressing-head arranged above said table, press-mold-elevating mechanism arranged beneath said table behind the pressing-head, a bridge-plate arranged beneath the table and extending from the pressmold-elevating mechanism to a point beneath the pressing-head, and means for withdrawing the bridge-plate from beneath the press-mold stem.

3. In a glass-machine, the combination, with the main frame, a horiZontally-rotatable table, a plurality oi press-molds carried by said table and each havingadependingstem, and a pressing-head arranged above the table; of a vertical guide arranged beneath said table in advance of the pressing position, .said guide having an open side into which the depending stems of the press-molds may pass, a stem-'engaging means arranged in said guide, means for elevating said engaging means, means for holding said engaging means at the upper end of the guide, and a bridge-plate arranged beneath the table and extending from said guide to a point beneath the pressing-head, for the purpose set forth.

4. In aglass-machine, the combination, with the main frame, ahorizontally-rotatable table, a plurality of press-molds carried by said table and each having a depending stem, and the pressing-head arranged above the table; oi' a vertical guide arranged beneath said table behind the pressing position, said guide having an open` side into which the depending stems of the press-molds may pass, stem-engaging means arranged in said guide, means for elevating said engaging means, means for holding said engaging means at the upper end of the guide, a bridge-plate arranged beneath the table and extending from said guide to a point beneath the pressing-head, and means for withdrawing the bridge-plate from beneath the press-mold stem, for the purpose set forth.

5. In a glass-m achine, the combination, with the main frame, ahoriZontally-rotatable moldtable carried thereon, and a plurality of molds carried by said table, said molds consisting in part of a vertically-movable press-mold each having a depending stem; of a pressing-head arranged above said table, a press-mold-elevating mechanism arranged beneath the table back of the pressing-head a distance equal to the distance between the molds of the moldtable, blowing mechanism arranged above the table in advance of the pressing-head, means for operating the pressing-head, means for operating the blowing mechanism, a single handlever,` and intermediate connections between said hand-lever and the pressing mechanism, and the blowing mechanism, and the elevating mechanism, whereby the operation of said lever will cause the operation of said several parts.

6. Inaglass-machine, the combination, with the main frame, the horizontally-rotatable table carried thereby, a plurality of molds carried by said table, each of said molds consisting in part of a vertically movable pressmold, and a pressing-head arranged above the table; of a fluid-pressure motor arranged beneath the table back of the pressing mechanism a distance equal to the distance between the molds and adapted to engage the pressmolds and elevate the same, a bridge-plate extending from the -elevating mechanism to a point beneath the pressing-head, a fluid-pressure motor for operating the pressing-head, a blow-head arranged in advance of the pressing-head a distance equal to the distance between the molds of the mold-table, a fluidpressure motor for raising and lowering said blow-head, a valve controlling the flow of motive fluid to the elevating-motor, a valve for controlling the iiow of motive Huid to the presser-head motor, a valve controlling the passage of motive fluid to the blow-head and its motor, a single hand-lever, and intermediate connections between said lever and each of the valves, for the purpose set forth.

7. In a glass-machine, the combination, with the horizontally-rotatable mold-table and the plurality of molds carried thereby, each of said molds consisting in part of the verticallymovable press-mold having a depending stem, of a guide arranged beneath 'said table back ofthe pressing position and into which the stems of the press-molds may pass, a plug arranged in said guide normally below the lower end of the press-mold stems, a Huid-pressure motor arranged beneath said guide and adapted to engage said plug to raise the press-molds, a bridge-plate extending from the upper position of the plug to the pressing position, a catch for holding said plug in its upper position, means for controlling the movement of the Huid-pressure motor, and means for withdrawing said catch.

8. In a glass-machine, the combination, with the horizontally-rotatable mold-table and the plurality of molds carried thereby, each of said molds consisting in part oi' the verticallymovable press-mold having a depending stem, of a guide arranged beneath said table back of the pressing position and into which the stems of the press-molds may pass, a plug arranged in said guide normally below the lower end of the press-mold stems, a Huid-pressure motor arranged beneath said guide and adapted to engage said plug to raise the stems, a bridge-plate extending from the upper position of the plug' to the pressing position, a catch for holding' said plug in it: Lipper position, means for controlling the movement of the fluid-pressure motor, means for withdrawing said catch, and means for withdrawing the bridge plate from beneath the pressmolds.

9. In a glass-machine, the combination, with the horiZontally-rotatable table and the molds carried'thereby each consisting in part of a vertically-movable press-mold having a de- IOC IOE

Iii

pending stem; of a horizontally swinging bridge plate arranged beneath said table, means for elevating the press-mold stems in succession to the bridge-plate, a looking-plunger adapted to engage the table, a lever adapted to engage the bridge-plate to swing the same, a pawl carried by said lever, an operating-lever adapted to engage said pawl, connections between the looking-plunger and said last-mentioned lever, and means engaging the pawl and swinging it out of engagement with said last-mentioned lever, whereby the locking-plunger may have a movement in excess of that required to produce the required swinging of the bridge-plate.

l0. In a glass-machine, the combination, with a fluid-pressure motor formingpart thereof, of a valve structure consisting of a main easing provided with an inlet and outlet Chambers separated by a valve-seat and main valve, a discharge-valve connected with said valve and communicating with the outlet-chamber, a passage leading from the outlet-chamber to the fluid-pressure motor, means for normally I holding the main valve closed, an' operatinglever, and intermediate connections between said lever and said valve for operating the valve through a short portion of the movement of said lever and-then releasing the same.

ll. In a glass-machine, the combination, with a {luid-pressure motorforming part thereof, of a valve structure consisting of a main easing provided with an inlet-and outlet chambers separated by a valve-seat and main valve, a discharge-valve connected with said valve and Communicating with the outlet-chamber, a passage leading from the outlet-chamber for the fluid-pressure motor, means for normally holding the main valve closed, an operatinglever having a slot formed therein with a shoulder 67, a' link carried by the valve, and a pin Carried by said link and projecting into said slot, for the purpose set forth.

In witness whereof I have hereunto set my hand and seal, at Swayzee, Indiana, this 20th day of June, A. I). 1904.

ROBERT J. MAIN. L. s]

Witnesses:

JAMES G. MAIN, JEssIE MAIN.

Images