US1262567A - Method and apparatus for cutting and severing glass. - Google Patents

Description

F. J. mm. METHOD AND APPARATUS FOR CUTTING AN!) SEVERING GLASS 1 %62 567Q APPLICATION FILED OCT. 3. I916.

Patented Apr, 9, 1953 2 SHEETS-SHEET 1. T

.Z'NYEHTUR. FR INDIE J H ZPPL F. J. RIPPL.

METHOD AND APPARATUS FOR cumma AND SEVERING GLASS. L fi fiq m ntd Apr. 9, 1918. Z SHEETS SHEET 2.

Pam 4:3

APPLICATION FILED OCT. 3- I916.

.v' .5 25 irman-23:.

' To all whom z't'may concern:

" ED STTES 12 FRANCIS 131221., 01 CLEVELAND, OHIO, AssIGNoE 'ro GENERAL ELECTRIC COMPANY, A conroaa'rion o'E NEW YORK.

METHOD AND APPARATUS FOR CUTTING AND SEVERING- GLASS.

Specification of Letters latent.

Patented Apr. 9, 1918.

Application filed October 8, 1916., SeriaINo. 123,49 1.

Be it known that I, FRANCIS J. RIPP'L, a citizen of the United States, residing. at Cleveland, in the county of Cuyahoga, State of Ohio, have invented certain new and useful Improvements in Methodsv and Apparat'us for Cutting and Severing Glass, of which the following is a specification.

My invention relates to the cutting or subdivision of glass bodies and more particularly to the separation, detachment or cutting of glass articles from blanks, for instance, rods or tubing, from which they have been formed.

The object of my invention is to improve the method of and apparatus for. detaching glass articles from one another whereby clean and more even cuts are produced, and the stickin ofthe severing devices, which has hereto ore been a source of trouble, is entirely obviated.

I have found that by imparting to the severing devices at the moment of engagement with the glass a vibrating cutting movement, the sticking of the severing devices is avoided and clean cuts are produced. Accordingly, in the practice of my invention I impart to the: cutting or severing devices a compound movement consisting of a continuous approaching and receding cutting movement and also a rapidly vibrating movement.

My invention is of especial importance in connection with automatic glass working machinery, and I have illustrated one embodiment of my invention as applied to the machine for automatically blowing lamp bulbs from glass tubing, illustrated in the application Serial No. 39,697, filed July 13, 1915, in my"name and that of Frank B.

4 For a better understanding of the novel features of myinvention reference may be had to the drawings accompanying this application in which Figure-1 is an elevation of the bulb blowing machine embodying my invention. Fig. 2 1s a horizontal section on the line 22 of Fig. 1. Fig. 3 is a plan view of the mechanism for detaching-the completed bulb. Fig. 4 is a side elevation thereof. 5 is a partial vertical section iand Fig. 6 1s a section on the line 66 of ig. 4.

Referring now to Figs. 1 and 2, it'will be seen that the machine comprises a number of tubular holders A, each of which receives a length of glass tubing. .As shown, these are six in number and are each rotatably supported in a frame comprising upper and lower spiders B and C respectively. The said spiders are carried by-the central hollow shaft D which extends through the bedplate E of the machine, the latter being supported by standards F. The central shaft is rotated intermittently so as to cause each-of the tube holders to stop for a definite period r with the depending glass tube in operative relation to one of a series of means each 'of which has a definite function in producing the-bulb. These means, as shown, corre- .spond in number to the number of-holders and are indicated as 'G' to L inclusive in Fig. 2. The means Gis for fusing the bottom of the glass tube, the means H for suitably shaping the bottom of the. glass tube and the means I for further fusing theportion of the glass tube which is to form the bulb. Means J includes the mold and means for bringing the sameinto operative relation with the end of the glass tube. Means K is for fusing the glass tube above the bulb preliminary to detaching the bulb, and means L is for detaching the completed bulb and causing its discharge into a suitable receptacle.

The intermittent drive for the center shaft comprises a disk M, slots in which are engaged by a pin N extending from an arm 0 mounted on a shaft P, which is driven'by' a power source, such as the motor R, which drives a shaft S connected by a speed reducing gear train T with a shaft U carrying the bevel gear V engaging the bevel gear W mounted upon the said shaft P. The shaft P is thus maintained in constant rotation, and consequently the arm 0 and the pin N operate at each revolution of the shaft P to engage the disk M and advance the same the distance between successive stops. v

The holders A and their contained tubes are constantly rotated, and, to this end, each holder carries a pinion A. These pin-. ions all intermesh with a'large toothed wheel X, which is mounted on a sleeve on the central shaft D. The said sleeve carries circumferentially thereof a pinion Y which is en aged by a gear P on the shaft P.-

n the making of glass bulbs as above described, and as is more particularly set forth 5 No. 39,697, filed July 13, 1.915, the rotary frame with its tube holders A is caused to be intermittently driven and stopped at the various operating" points G to L inclusive. The present application is chiefly concerned with the operations performed at the-points K and L and accordingly the other operations will not be particularly'and specifically described herein. After the molding devices J operate to form the bulb the intermittent rotary mechanism carries the glass tube into operative relation with the fusing means K. During this movement an arm 1 is elevated by the engagement of a roller 2 thereon with a short segmental track 3, thus causing the corresponding chuck 4 to be opened and the glass tube held thereby to descend and the end thereof to rest on the downwardly inclined surface of gage 5. The glass tube is thus allowed to descend until the cam 3 is passed, when the chuck again closes, gripping the glass tube 6, and in this position the parts move into operative re;

. lation with the means K. This comprises four gas and air burners 7 which direct a flame against the glass tube at the cut-off point. After the proper intervals, the glass tube is carried to'the cut-off means L, which is shown in detail in Figs. 3 to 6 inclusive. In connection with this meansa burner 8 may be provided which directs its flame against the cut-off portion of the tube. This means comprises a pair of knife blades 9 between the opposed cutting edges of which the glass tube is brought to rest with the portion which has been previously fused in line with the said cutting edges. The said knife blades are each removably held in a holder arm 10, and each arm is pivoted at 11 on a stud 12 mounted in an arm 13 supported on a pinion 14. The teeth of the respective pinions 14 intermesh. As shown in Fig. 5, one of the pinions 14 is mounted on a shaft 16 which carries at the bottom thereof the arm 17. The end of arm 17 engages a cam standard 21.carried by the bed plate of the A machine. A bearing22 is sleeved on the stud 20*and the shaft 16 so as to hold the said parts in properly spaced relation. The

fulcrumed holder arms 10 have extensions 23 g which are connected by spring 24 and have and so the rapid vibration of the knife blades. The purpose of this is to prevent the sticking of the knife blades when they come in contact with the fused glass and so to produce a clean out. The detached bulb falls through a chute 28 into a suitable receptacle not shown.

The gas and air mixture burners comprised in the above described apparatus is preferably distributed through a manifold 30 provided with suitable regulating valves 31.

While I have set forth the invention in the specific mannerrequired by the statutes, it is understood that the embodiment shown is for illustrative purposes only and that my invention is of wide application and for the various capable of assuming other forms than that illustrated.

What I claim as new, and desire to secure by Letters Patent of the-United States, is: 1. The method of' severing plastic glass which consists in subjecting the same at the severing point to a multiplicity of rapidly applied cutting or shearing'impacts.

2. The method of severing glass which consists of bringing the same to a plastic condition and while in this condition subjecting the same at the severing point to a multiplicity of rapidly applied cutting or shearing impacts. v

3. The method of severing glass rods or tubing which consists in bringing the same to a plastic condition at the separating point, and while in this condition subjecting the glass at the said point to a multiplicity of rapidly applied cutting or shearing impacts. 4. The method of severing glass articles which consists in bringing the glass into a plastic condition at the severing point and while in this condition bringing vibrating severing devices into cutting engagementtherewith.

5. An apparatus for severing glass comprising severing devices adapted to be brought into engagement-with the glass, and means imparting a rapidly vibrating motion to the cutting device at the moment of engagement. p 6. An apparatus for cutting and severing plastic glass. comprising severing devices adapted to be brought into engagement with the glass and means for imparting a vibrating cutting motion to the severing devices at the moment of engagement.

7. An apparatus for severing glass tubing comprising means for fusing the tubing at the severing point, severing devices adapted to be broughtinto engagement with the tube at the fused point and means for imparting to the severing devices a rapidly vibrating cutting movement at the moment of engagement with the tube. I

8. An apparatus for severing glass tubing comprising fusing means and means adapted to bring the fusing means and the tube into working relation, and means for'bringing the fused tube and severing devices into working relation, and means imparting a rapidly vibrating cutting movement tothe severing devices when they are brought into engagement with the fused tube.

v 9. In an automatic machine for Working glass articles, the combination of holders and means for advancing said holders step by step, with a fusing and severing means in the path of saidholderscomprising vibrating severing devices adapted to'be brought into cutting engagement with said articles.

v 10. In an automatic machine for working and severing glass rods and tubing, the comglass articles from glass rods and tubing, the

combination of holders forthe rods or tubing and means for rotating said holders intermittently' through a redetermined path whereby the different orming operations are performed on the ends of the rod and,

' tubing, with means for lowering the rod and tubing after theforming of the articles, and fusing and severing means located in the path of the advancing articles comprising vibrating severing devices adapted to be brought into detaching relation with said.

articles. a

12. In an automatic machine'for forming glass articles from glass rods and tubing, the

combination of holders for the rodsand tubingand means for rotating said holders intermittently through a predetermined path whereby the different prming operations are performed on the ends of the rod or tubing, with means for lowering the rod and tubing a distance equal to the length of the formed articles, and fusing and severing devices located in the path of the advancing articles comprising cutting blades adapted to be brought into detaching relation with said articles, and means for rapidly vibrating said cutting blades at the moment of their engagement with said articles.

13. In an automatic machine for forming articles from glass rods and tubing, the combination of holders for the rods and tubing and means for rotating said holders intermittently through a predetermined path whereby the different forming operations are performed at the end ,of the rod or tubing, with means for lowering the rod or tubing a distance equal to ,the length of the formed articles, and fusing and severing devices 10- catedin the path of the advancing articles comprising cutting blades adapted to. be

.brought into detaching relation with said articles, and a rapidly operating cam in engagement with said cutting blades for the purpose described.

14. An apparatus for severing glass rods and tubing comprising means for fusing the rodor tubing at the severing point, cutting or severing blades adapted to engage the rods or tubing at the fusing point and means for rapidly vibrating said cutting blades at the moment of engagement with said rod or tubing.

15. An apparatus for severing glass rod and tubing comprising means for fusing the rod or tubing at the severing point, pivoted cutting blades adapted to be brought intosevering relation at the fusing point, and a rapidly operated cam in engagement with said cutting blades for imparting thereto a vibrating motion during the cutting operation.

16. An apparatus for severing glass rod:-

and tubing comprising two cutter blade sup ports and means for causing them to advance toward and recede from each other, levers on said supports carrying at one end cutting blades and at the other end bearing surfaces, a rapidly operating cam wheel located between said cam surfaces and a spring means maintaining the bearing surfaces in engagement with the cam wheel.

In witness whereof, I have hereunto set my hand this 30 day of Sept, 1916.

FRANCIS J. RIPPL.

Images