US1577538A

US1577538A - Apparatus for burning off glassware

Info

Publication number: US1577538A
Application number: US747307A
Authority: US
Inventors: Alvah C Parker
Original assignee: LIBBEY GLASS Manufacturing CO
Current assignee: LIBBEY GLASS Manufacturing CO
Priority date: 1924-11-01
Filing date: 1924-11-01
Publication date: 1926-03-23
Anticipated expiration: 1943-03-23

Description

March 23 1926. 1,577,538

A. C. PARKER APPARATUS FOR BURNING OFF GLASSWARE Filed Nov. 1 1924 6 Sgeets-Sheet 1 ,ea 35 I a5 6H0: neg 4s,

March 23 19269 1,577,538

A. c. PARKER APPARATUS FOR BURNING-OFF GLASSWARE Alva/z C. Flu/(en March 23 3926, 1,577,538

A. C. PARKER APPARATUS FOR BURNING-OFF GLASSWARE Filed Nov. 1 1924 6 Sheets-Sheet 5 after-R1 5:

March 23,1926, ,538

' A. C. PARKER APPARATUS FOR BURNING-OFF GLASSWARE Filed Nov. 1 1924 6 Sheets-Sheet 4 Alva/1 C. Par/(eh auto: n2

March 23 ,1926. 1,577,538

A. C. PARKER APPARATUS FOR BURNING-OFF GLASSWARE Filed Nov.'1 1924 6 Sheets-Sheet 5 Alvah C. Pat/(er @4 91 (9%,WW I

March 23 1926.

' 1,577,538 A. c. PARKER APPARATUS FOR BURNING-OFF GLASSWARE- Filed Nov. 1. 1924 e Shets-Sheet 6 X242 #29 A27 f1 -12.]- 1 1/0 fllvah C. Par/(er Patented Mar. 23, 1926.

UNITED STATES PATENT OFFICE.

ALVAII C. PARKER, TOLEDO, OHIO, ASSIGNOR TO THE LIIBBEY GLASS MANUFAC- TURING COMPANY, A CORPORATION OF OHIO.

APPARATUS FOR BURNING OFF GLASSWARE.

Application filed November 1, 1924. Serial No. 747,307.

To all whom it may concern Be it known that I, ALvAH O. PARKER, a citizen of the United States, and a resident of Toledo, in the county of Lucas and State of Ohio, have invented a new and useful Apparatus for Burning Ofi Glassware, which invention is fully set forth in the following specification.

My invention relates to apparatus for burning-off glassware and more particularly to apparatus wherein the article is held substantially stationary while the burner is moved relatively thereto during the burning-ofi' process.

My object is to provide an apparatus of the type described, wherein the application of the flame will be evenly distributed about the article without the necessity of moving the article during the burningoff process. Other features of the invention will appear as the description proceeds.

In the accompanying drawings, Figure 1.

shows a front elevation of apparatus embodying one form of my invention; Fig. 2 is a rear elevation of the same; Fig. 3 IS a vertical .section on the line 33 of Fig. 2; Fig. 4 is a vertical section like Fig. 3, but showin the parts in difierent positions; Fig. 5 1s a. section on the line 5 -5 of Fig. 6, but showing the parts indifferent positions; Fig. 6 is a plan View of the apparatus shown in Fig. 2; Figs. 7, 8, 9, 10 and 11 are sections on lines 7-7, 88, 9-9, 10--10, and 1111, respectively, of Fig. 3; Fig. 12 is a view showing a modified form of mechanism for moving, the burner; Fig. 13 is a section on the line 13-13 of Fig. 12.

The apparatus disclosed is supported upon a table 20 held in fixed position by any "suitable means. A burner 21 is provided at the front side of the table. An article support 22 is mounted in alignment beneath the burner by means of

sleeves

23, 23, which enclose

columns

24, 24 depending from the table. The lower ends of

columns

24, 24 are united by a cross-piece 25.

A bracket 26 depends from the rear side of the table and provides a bushing for a shaft 27 The shaft 27 is the main drive shaft of. the machine. and carries a cam wheel 28 having therein a cam groove 29. The bracket 26 has a downward extension 30, and a lever 31 is fulcrumed upon rock shaft 32 mounted in the lower end of extension 30. The rear end of lever 31 carries .ment of the solenoid core.

a roller 33 working in cam grove 29, while the front end of the lever is connected by a link 34 to the article carrier. is directly pivoted to a block 35 which slides vertically in a guideway '36 in the article carriers A pin 37 fixed in the article carrier works in a slot 38 in the block 35. A pin 39 extends upward from block 35 and 1s surrounded by a spring 40.

The article is directly supported upon a perforated plate 41" mounted in the article carrier, and a guide ring 42 surrounds the article, the" guide ring being supported by arms 43 from the article carrier. There is a vacuum chamber 44 in the article carrier beneath the perforated plate 41, and the outlet of this chamber is connected by a flexible hose 45. with the inlet of a valve casing 46.

A pipe 47 leads from casing 46 to a suitablevacuum pump. The passage through casing46 is controlled by a valve havin a stem 48. A block 48' has limited motion on the end of stem 48 and is normally pressed upward by a spring 49 surroundin the stem. The article carrier is provide with a lug 50 in position to contact block 48 when the article carrier is lowered.

Stop collars 51 are mounted on columns 24 near their upper ends. The collars carry a fulcrum 52 for a bell-crank lever 53. The front end of the bell-crank lever carries a roller 54 adapted to contact a substantlally horizontal surface on a lug 55 on article carrier 22. The rear end of bell-crank lever 53 is connected by a link 56 to the stem 57 of the core 58 of a solenoid 59. The solenoid is mounted within a housing 60 depending from the table 20. A bracket arm 61 extends downward from housing 60 and carries a sto pin 62 in line with a downward extension 62 of the solenoid stem 57. An adjustable stop nut 63 controls the elevation ofpin 62' and thereby an adjustable limit is provided for the downward move- A stop nut 64 on extension 62 limits the upward movement of the core by contacting the lower side of housing 60.

The link 34 times in a manner which will be described below.

The top ends of columns 70, are united by a cross-piece 71. A'moil clutch 72 is suspended from the lower end of a cable 73, which passes over

pulleys

74 and 75 mounted on cross-piece 71 and has a weight 76 attached thereto in order to counterbalance the clutch. Plate 68 is attached to cable 73. The clutch is provided with gripping members 77 which oscillate .on pivots 78 and have outwardly extending lugs 79. Fixed pins 80 project through slots 81 in the gripping members 77.

A slide 82 is mounted upon columns 70 beneath bracket69. Slide 82 is yieldingly held in position on columns 70 by means of friction blocks 83, which are pressed against the columns by springs 84. (See Fig. 7.) A bracket 85 extends forward from slide 82 and acts as a guide for cable 73. A ring 86 surrounds the cable beneath bracket 85 and has an upwardly extending arm 87 sliding in a guideway 88 in slide 82. The arm is provided with a slot 89 through which a pin 90 passes into the rear side of bracket 85.

A bracket 91 is mounted upon an intermediate portion of the table and has in the upper end thereof a fulcrum pin 92. A lever 93 is mounted upon the fulcrum pin 92, and the forward end of lever 93 is connected by a link 94 to .a lug 95 on arm 87. The rear end of lever 93 is connected by a link 96 to a slide 97 vertically reciprocable in a guideway 98. The lower end of slide 97 carries a roller 99 which works in a cam groove 100 in cam wheel 28. p

A moil pan 101 is provided for carrying away the burned-off moil. At the two sides of the moil pan, at the rear, there are provided rollers 102 which work in guide grooves in brackets 103. A bell-crank lever 104 is mounted upon a fulcrum pivot 92, similar to fulcrum pivot 92, and has one arm pivoted at 105 to the moil pan. A link 106 is pivoted at 107 to theother arm of bell-crank lever 104 and is pivoted at 108 to an arm 109 on shaft 32, which forms the fulcrum of lever 31.

A vertical shaft 110 is mounted in a bearing 111 in the bracket 26 above the main shaft. A beveled gear 112 on the lower end of shaft 110 meshes with a beveled gear 113 on shaft 27. The upper end of shaft 110 carries a sprocket wheel 114 connected by a chain 115 to a sprocket wheel 116 on the lower end of a stud shaft 117, mounted in the table adjacent the burner, A gear wheel 118 on the upper end of stud shaft 117 meshes with gear teeth 119 on the burner carrier.

The burner carrier is annular in form and is provided on its under side with .a groove 120 bounded by annular projections 121,

mamas which project downward into suitable grooves in the table beneath the burner.

Packing rings 122 are mounted in the.

groove beneath annular projections 121 and are pressed upward against these projections by springs 123. Ducts 124 lead from Y and is fed by means ofa pipe 126 connected by a flexible pipe, not shown, with any suitable source of fuel. In this construction a crank 127 is substituted for sprocket wheel 114, and crank 127 is connected by a link 128 to a crank 129 on the lower, end of a stub shaft 130. A gear wheel 131 on the upper end of stub shaft meshes with teeth 132 on the burner. Granklarm 129 is longer than crank 127, so that revolution of crank 127 causes oscillation of crank 129, and so oscillates the burner.

The fuel for the burner may be controlled in any desired way. I have shown a construction for controlling a part at least of the fuel, details of this construction being shown in Fig. 10. A bracket 133, bolted upon bracket 26, carries a valve casing 134.

Pipes

135 and 136 lead, one of them from a suitable source of supply to the valve casing, and the other from the valve casing to the burner. The valve is operated by a stem 137 'having a roller 138 actuated by a cam 139 attached by means ofscrews 140 to the beveled gear 113.

The table and main shaft may be extended, and as many units as desired mountedside b side. The relation of a second unit to t e first is indicated in Figs. 2 and 6, in which some elements of the second unit are-shown, marked by the same reference numbers as for the first unit, with the addition of a prime mark.

The operation of the apparatus is, as follows: r

With the parts in the position shown in Figs. 1 to 3, an article resting on the article support is positioned within the burner and is having the moil burned off. As soon as the glass along the desired line of severance is melted, the article parts along this line and the moil and clutch are raised by weight 76 until the moil clutch nears the bracket 85.

At the same time connector plate 68 supplies connection between contact plates 67 and thereby the solenoidis actuated to raise the solenoid core as far as allowed by nut 64. The action of the solenoid through hellcrank lever 53 depends upon the adjustment of nuts63 and 64. If the parts are so arranged that the arm carrying roller 54 is at an angle to the vertical when the next operation.

core starts to rise and is substantially vertical when .the core is at its highest point, the article carrier is forced downward so that the bur ned-ofi' edge is moved slightly below the line of severance. On the other hand, the nuts may be so adjusted that the arm carrying roller 54 will be more nearly vertical when the core is in its lowest position than when it is in its" highest position, in whch case the actuation of the solenoid will result in allowing the article carrier to move upward in a manner which will be described. 7

After the moil has been burned off and sufficient time has elapsed for the desired fire-finishing action, cam wheel 28 turns so as to actuate lever 31 to lower the article.

carrier. As the article carrier approaches the lower limit of its movement, lug contacts block 18 and moves valve stem'48 downward to the limit of its movement, after which any further lowering of lug 50 results in compression of spring 49. The valve is so constructed that when the stem is moved downward the vacuum is broken by making connection between pipe45 and the outside air, and thearticle is released from the carrier. The article may bereleased by merely closing the connection to the vacuum pipe, and allowing the vacuum to be released by seepage of air under the article or through other imperfect joints.

A new article may then be placed upon the carrier, and the carrier is ready for the While the moil clutch is raised, bell-crank lever 104 is actuated to swing the moil pan into the position shown in Fig. 5. When the pan reaches that position, lever 93 is actuated to lower the arm 87 .and with it the ring 86. The slotted connection between arm'87 and bracket 85 allows suificientrelative downward movementof the ring 86 with respectto bracket 85. to enable thering to contact lugs 79 and release gripping mem-' bars 77 ,so that the moil drops into the pan.

Thereupon the bell-crank lever 104 is again actuated to swing the moil pan back into the position shown in Fig. 3, the tilting of the pan into that position discharging the moil to the rear-of the apparatus. 7

When the article carrier is raised by the I action of lever 31, valve stem 48 is released and thereby connections are made which cause the evacuation of air from the hollow space 44 beneath perforated plate 41, and

the article is securely held in position upon the article carrier.

The carrier continues to rise until lug 55 the front end of lever 93 starts to rise, ring 86 will first move upward with relation to bracket 85, both becausethe bracket 85, is held downward by' gravity and because upward movement of the bracket-carrying slide 82 is arrested by the action of friction blocks 83 against columns 70. The result is that the moil clutch is held down by bracket 85 until ring 86 moves upward enough to allow members 77 to engage the moil. 'Thereafter ring 86, and slide 82 are raised to the position in which they are shown in Fig. 3 and the moil is subjected to an upward pull determined by weight 76. The parts are then in the position in which they are shown in Figs. 1 to 3, and the operation is repeated.

The construction of the moil clutch and its relation to the movement of the article support are particularly advantageous. The structure is such that the moil is removed at once when the glass is suificiently melted, and adjusting nuts 63 and 64 may be set so that the burned-off edge may be projected into or withdrawn from the severing flame the exact amount desired. Where an article "is desired with an edge of approximately the the flame than its severing position. The 7 amount of glass melted and the character of the resulting edge is affected also by the degree of tension exerted upon the mo1l by weight 76.

- Where articles are burned-0E by means of a substantially annular flame, it is desirable to secure relative movement of the article and flame in orderto avoid inequalities at different points about the article. Th1s may be secured by rotating the article, or by rotation or oscillation of the burner. The disadvantage in 'moving the burner is the greater dilficulty in making connections between the burner and the fuel supply than where tliburner-is stationary. The difficulty in rotating the article lies in the necessity of rotating both ends of the article at the same speed, in order to avoid twisting the molten glass along the line of severance while the severance 1S belng completed, and other mechanical difiiculties, which will be readily apparent. I have devised, therefore, a construction wherein the article may remain stationary during the burning-01f process, so that there will be no chance for any twisting of the glass. during completion of the severance, and at the same time the supply of fuel to the oscillating or rotating burner is simplified.-

-While I have shown one form of apparatus especially well adapted to accomplish my purposes, it is obvious that many minor changes may be made in the construction and operation of parts within the scope of the appended claims without departing from the spirit of the invention.

In the appended claims, the burning-off process is intended to include both the melting which is' necessary for severance and the additional heating which is found desirable to finish the severed edge.

What I claim is:

1. In apparatus for burning-off glasswere a burner, a vertically reciprocable article carrier beneath the burner, and automatic means whereby an article is held in position'on the carrier when the carrier is raised and is released-whenthe carrier is lowered.

2. In apparatus for burning-oil glassware, a burner and a vertically reciprocable article carrier beneath the burner, said carrier having a perforated plate upon which an article may be set and a vacuum chamber beneath the plate.

3. In apparatus for burning-off glassware, a burner and a vertically reciprocable article carrier beneath the burner, said carrier having a perforated plate upon which an article may be set, a vacuum chamber be-- neath the plate and a guide ring above the plate in position to center an article on the plate.

4. In apparatus for burning-01f glassware, a burner, a vertically reciprocable article carrier beneath the burner, said carrier having a perforated plate upon which an article may be set and a vacuum chamber beneath the plate, and automatic means to connect said chamber with a vacuum pump when the carrier is raised and to break said connection when the carrier is lowered.

5. In apparatus for burning-off glassware, a burner, a vertically reciprocable article carrier beneath the burner, said cararticle carrier beneath the burner, a stop in position to contact said carrier and limit its upward movement, and yleldmg means holding the carrier against the stop during.

the burning-0E process.

7. In apparatus for burning-0d glassware, a burner, a vertically reciprocable article carrier beneath the burner, a stop in position to contact the carrier and limit its upward movement, mechanical means for reciprocating the carrier, a lost motion con nection between said means and the carrier,

to hold a blown glass article moil upward,

and a moil clutch above the burner adapted to raise the moil after it is severed by the burner.

10. In apparatus for burning-off glassware, a burner, a vertically reciprocable article carrier beneath the burner adapted to support a blown glass article moil upward, a stop adapted to limit the upward movement of the carrier, yielding means holding the carrier against the stop during the burning-oil process, and a moil clutch above the burner adapted to raise the moil after it is burned-off.

11. In apparatus for burningofi' glassware, a burner, a vertically reciprocable article carrier beneath the burner adapted to support a blown glass article moil upward, a movable stop adapted tolimit the upward movement of the carrier, means holding the carrler against the stop durlng the burning-0d process, a moil clutch above the burner adapted to raise the moil'when it is severed from the article, and means,

-operable upon the rising of the moil clutch,

to move the stop.

12. In apparatus for burning-o'fi' glass- Ware, 'a burner, a vertically reciprocable article carrier beneath the burner adapted to hold a blown glass article moil upward,

a movable stop adapted to limit the upward movement of the carrier, means holding the carrier against the stop during the burningotf process, a moil clutch above the burner, means constantly pulling upward on the clutch and moil and raising them upon completion ,of severance, and means operable upon the raising of the moil to move said stop.

llll

article carrier beneath the burner adapted to support a blown glass article moil upward, a movable stop adapted to limit the upward movement of the carrier, meansholding the carrier against the stop during the burning-off process, a moil clutch above the burner adapted to raise the moil when it is severed from the article, a solenoid for moving the stop, spaced contacts in the solenoid circuit, and means to bridge the gap between the contacts when the moil is raised.

14. In apparatus for burning-off 'glassware, a burner, an article carrier movable towards and from the burner, movable means determining the distance between the carrier and burner during the burning-off process, a solenoid controlling said means, and means in the solenoid circuit making the action of the solenoid dependent upon removal of moil from an article in the carrier.

15. In apparatus for burning-off glassware, a burner, an article carrier movable towards and from the burner, a movable stop limiting the movement of the carrier towards the burner, and means to move the stop upon completion of severance of an article in the carrier, said moving means being adjustable to move the stop nearer to or farther from the burner upon completion of severance of the article.

16. In apparatus for burning-off glassware, a burner, an article carrier reciprocable towards and from the burner, the carrier having a contact surface thereon, a

pivoted member carrying a roller in posi tion to contact said surface when the carrier is moved towards the burner, and means to oscillate the member and thereby vary the position to which the carrier may approach the burner.

17. In apparatus for burning-off glassware, a burner, an article carrier reciprocable towards and from the burner, said carrier having a contact surface normal to the line of its reciprocation, a member mounted upon a fixed pivot and carrying a roller in position to contact said surface when the carrier is moved towardsthe burner, and

means to oscillate the member while the carrier is pressed against the roller.

e 18. In, apparatus for burning-off glassware, a burner, a carrier reciprocable towards and from the burner and having a contact surface normal to its line of reciprocation, a pivoted member carrying a roller in position to contact said surface when the carrier is moved towards the burner, means,

constantly holding the-'carrier- ,against said roller during the burning-off operation, and means operable upon the completion of severance of the glass article to oscillate said member, said means being adjustable to move the roller nearer to or farther from the plane of the burner when the member is oscillated. i

19. In apparatus for burning-off glassware, a burner, a vertically reciprocable article carrier beneath the burner adapted y to support a blown glass article moil upward and having a substantially horizontal contact surface, a pivoted -member carrying a roller in position to contact said surface when the carrier israised, means'holding the. carrier'against the roller during the burning-off operation, a moilclutch above the burner adapted to raise,the moil'when it is severed from the article, and means, operable upon the rising of the moil clutch, to Y member, spaced contacts in the solenoid circuit, meansholding the carrier against the roller duringthe burning-off operation, a moil clutch adapted to move the moil away from the article when it is severed there from, and means operated by the movement of the moil clutch to bridge the'space between said contacts.

21. In apparatus for burning-off ware, a burner, a vertically reciprocable article carrier beneath the burner adapted to hold a blown glass article moil upwards. a moil clutch above the burner, and a counterbalancing weight constantly tending to raise the clutch and any moil engaged I thereby. v

22. In apparatus for burning-off glassa ware, a burner, a vertically reciprocable article carrier beneath the burner adapted to hold a blownglass article moil upwards, a

lass- 100 moil clutch above the burner, a counterbalancing weight constantly tending to raise the clutch and any moil engaged thereby, and a vertically reciprocable member above the clutch adapted to actuate the clutch to free the moil therefrom while the clutch is raised.

23.- In apparatus for burning-olf glassware, a burner, a vertically reciprocable article carrier beneath the burner adapted to hold ablown glass article moil upwards, a moil clutch above the burner, a counter balancing weight constantly tending to raise the clutch and any moil engaged thereby, a vertically reciprocable slide above the clutch, and means to lower the slide and depress the cltltch'onto the moil of an article in the. burner and thereafter to raise the slide and leave the clutch subject 'to the action of said weight.

; above the burner having gripping members adapted to grip the moil of an article raised by the carrier, a counterbalancing weight constantly tending to raise the clutch and any moil gripped thereby, a ring above the clutch adapted to actuate said members to,

release a moil gripped thereby, a vertical column, a slide frictionally engaging the column, a lost motion connection between the slide and said ring, anduiiechanical connelcltions .for reciprocating said ring vertica y.

25. In apparatus for burning-off glass ware, a burner, a vertically reciprocable article carrier beneath the burner adapted to hold a blown glass article moil upwards, a moil clutch above the burner adapted to raise the moil after his severed by. the burner, a moil pan, and means to move the pan beneath the clutch while the clutch is raised.

26. In apparatus for burning-off glassware, a burner, avertically reciprocable article carrier beneath the burner adapted to hold a blown glass article moil upwards, a moil clutch above the burner adapted to raise the moil after it is severed by the burn- .er, a moil pan, and means to move the pan forward beneath the clutch while the clutch is raised and "then backward to allow the clutch to be lowered.

27. In apparatus for burning-off glass- Ware, a burner, a vertically reciprocable article carrier beneath the burner adapted to hold a blown glass article moil upwards, a moil clutch above the burner adapted to .raise the moil after it is severed by the burner, ,a moil pan, means to move the pan forward beneath the clutch while the clutch is raised and then backward to allow the clutch to ,be lowered, the pan being open at the moil clutch above the burner adapted to raise the moil after it is severed by the burner, a moil pan, the rear end of the moil pan being open, a pivoted support for the pan, means to oscillate the support in an approximately horizontal arc to move the pan forward beneath the clutch, while the clutch is raised, and then to the rear, rollers on the rear of the pan, and guides for the rollers so shaped as to raise the rear of the pan until the pan is approximately hori- -zontal in its forward position and lower the rear end of the pan when it ismoved to the rear.

29. In apparatus for burning-off glass ware, a burner, a carrier adapted to hold in fixed position adjacent to the burner a glass article having'a form of rotation, and means to move the burner about the axis of an article held by the carrier.

30. In apparatus for burning-off glassware, an annular burner, a carrier adapted to hold a glass article Within the burner, means to rotate the burner, an annular support for the burner, the surfaces of the burner and support being shaped to leave an annular channel therebetween, and an annular packing ring on each side of said channel, there being a fuel duct into said channel through said support and from said channelthrough said burner.

31. In apparatus for burning-off glassware, a burner, a vertically reciprocable article carrier beneath the burner adapted to carry a blown glass article moil upward, a clutch above the burner adapted to raise the moil after it is severed by the burner, and means to move the burner about the axis of an article in the carrier.

32. In apparatus for burning-off glassware, an annular burner, a non-rotatable article carrier movable towards and from one side of v the burner, a non-rotatable moil clutch movable towards and from the other side "of the burner, and means to rotate the burner.

In testimony .whereof I have hereunto signed my name to this specification.

ALVAH C. PARKER.