US657097A - Glass-blower's machine. - Google Patents

Description

No. 657,097. Patented Sept. 4, |900. C. A. DUNBAR.

GLASS BLOWERS MACHINE.

(Application tiled Mar. 5, 1900.) K (No Model.) 2 Sheets-Sheet l.

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No. 657,097. Patented Sept. 4, |900. C. A. DUNBAR.

GLASS BLUWEHS MACHINE.

(Application led Mar. 5, 1900.)

(No Model.) 2 Sheets-Sheet 2.

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CLEMENT A. DUNBAR, OF DETROIT, MICHIGAN.

GLASS=BLOWERS MACHINE.

SPECIFICATION forming part of Letters Patent No. 657,097, dated September 4, 1900. Application i'llecl March 5,1900. Serial No. 7,383. (No model.)

To @ZZ whom it may concern:

Be it known that I, CLEMENT A. DUNBAR, a citizen of the United States, residing at Detroit, in the county of vVayne and State of Michigan, have invented certain new and useful Improvements in Glass-Blowers Machines, of which the following is a specification, reference being had therein io the accompanying drawings.

The invention consists in the construction of a glass-blowers machine, and particularly in the construction of a machine comprising a movable mold which is closed at the blowing-point and is then moved away from the blowing-point and opened, the opening being effected in such a way as to prevent the pos sibility of injuring the blown article.

The invention further consists in the construction of the various parts, as more fully hereinafter described and then specifically pointed out in the claims.

In the drawings, Figure l is a plan view of my machine. Fig. 2 is a vertical central section thereof on line 0c, showing at the right hand in dotted lines the blowpipe, with the gather thereon, when inserted in position in the mold and at the left hand a finished bottle standing in the opened mold. Fig. 3 is a section on line y y, Fig. l, illustrating the construction of the mechanism for closing the mold. Fig. 4 is a perspective illustrating theholding device for one section of the mold at the blowing-point. Fig. 5 is a vertical section showing that holding device in connection with the connections to the mold-section. Fig. 6 is a perspective view of one of the molds and portion of the camway which actuates one of the mold-sections, showing that moldsection lifted to clear the blown article. Fig. 7 is a vertical section through the mold, the section L thereof being slightly raised.

My invention is vparticularly intended as an assistance to the glass-blower. It is intended to be operated either by the glassblowers themselves or by an attendant, or both, and to provide mechanical means to open the mold-sections perfectly without danger of damage to the blown article, thus obviating the use of the boy ordinarily employed by the glass-blowers to open the mold. It is well known that boys, even though eX- perienced in this work, destroya large per cent. of the blown articles, and thus reduce the output of the blower, to say nothing of the expense of employing such boys and the uncertainty of their being on hand when wanted. The machine also is intended to enable the blowers to operate more rapidly, and thus in a given time to turn out more finished product than by the old device.

A is the base of the machine, B being the top thereof, which is stationary. Above the top is a mold-carrier C, shown in the form of a table turning upon the central pivot D. This pivot has at its lower end a bevel-pinion E, meshing with the bevel gear-Wheel F upon the shaft G, journaled in horizontal bearings in the base. On the shaft G is a ratchetwheel II, which is shown in Fig. 2 by breaking away part of the gear-wheel F.

I is a lever on the shaft G and having a pawl J engaging with the ratchet-wheel. K is a second lever journaled in the base, having the bearings a a above the lever I and arranged so as to successively impinge upon the lever I as the lever K is moved downward. By depressing the lever K the operator through the mechanism described will im part to the mold carrier or table C a rotational movement. The amount of this rotational movement may be determined by the relative size of the wheels E and F. In this case I have shown the movement at each operation as one-quarter of a revolution of the table C. That is not essential, as for different classes of work different gear-wheels may be used and the table given eitheran entire revolution or such fractional part thereof as is de sired. In case, for instance, I use but one mold on a table it would travel the entire distance around the circle. if I used two molds, it would move a half-circle, and if I used three molds it would move the third of a circle, and so far as a certain feature of my invention is concerned-that is, for opening and closing the mold in the desired mannerit is immaterial what movement is given to the carriage at each operation. The ordinary form, however, will be that shown in the drawings, in which it takesfour operations of the lever K to make a complete rotation of the mold-carrier.

My machine is intended to be used in connection with the ordinary molds which every IOO glass-factory has in use, so that manufacture of special molds will not be required, and I have therefore shown an ordinary two-section mold comprising the sections L and L', pivoted upon the pins M, which are fixed to the table or to a base (not shown)` which might be fixed to the table. Between these sections and in the proper relation thereto is secured to the table the bottom plate O. I have shown it secured by means of a set-screw c, passing through the table. This bottom plate may be made an integral part of the table-C, or in case where ordinary molds with a base-plate are used it may be attached thereon in the usual manner. The molds have the usual opening for the handles, and in the mold section L may be secured the `usual handle P, while in the n1old-section L I secure an eyebolt or block Q. To the handle P is attached a block Q, preferably by making a sleeve thereon through which the handle passes and locking the block to the handle in any suitable manner, as by a setscrew d. This block has a vertical aperture, through which passes a vertical stem e at its lower end, carrying a grooved roller h, riding on a camway R. Aset-screw t adjustably secures together the block and the stem e.-

c is a curved friction-shoe upon the block Q. This friction shoe is adapted to bear against a holding device (shown in Fig. 4) consisting of a roller Z, sleeved on the arm m of a bell-crank lever pivoted on the pin n, the other arm o of which has a counterweight p thereon.

q shows friction-rollersof larger diameter than the roller Z and at opposite ends thereof and bearing against the vertical plate fr, to which the pivot-pin n is secured.

The eyebolt Q engages with the vertical pin S on the end of the mold-actuating arm S', forming an adjustable pivotal connection between these parts,which arm extends across the table C and is connected to a sliding block s. This connection I preferably make adjustable by means of a stem s', engaging an aperture in the end of the arm S' and held by means of a set-screw t. The block s has a headed pin u passing through a longitudinal slot in the table.

T is a slide working in suitable guides upon the upper face of the top B of the base and having a lug or projection w near its end eX- tending up behind the lower end of the pin u. This slide T may be actuated in any suitable manner-as, for instance, by the bellcrank lever T, connected thereto, which in turn is actuated by the foot-rod T2, extending up in the position for the operator to place his foot upon the top. It is evident that if the operator places his foot upon the footrod T2 he will through the connections described move the arm S and with it the moldseetion L to its closed position. The camway R preferably extends entirely around the table and is of a shape to be hereinafter described for the purpose of opening and closing the mold-section L.

Vhile I have described but one mold and the connections thereto, it will be understood that each mold has a similar connection and attachments and that each will be operated as follows: The foot-rod T2 is located at the point where the blower stands. This is represented in Figs. l and 2 of the drawings as at the right hand thereof. In this position the mold-section L/ at the blowing-point is held in its closed position by the wedging of the roller l between the shoe 7a and the plate r, thus holding one moldsection stationary in its closed position, so that the operator may rest his blowpipe against it and centerY the gather therein. As soon as the gather is in position the operator presses down upon the foot-rod T2 and through the connections described pushes in the arm S' and closes the mold-section L. I-Ie then blows the bottle in the ordinary manner and breaks away the blowpipe above the top of the mold, leaving the blown article within the closed mold. The operator or boy who is upon the opposite side of the machine for the purpose of carrying away the bottles or handing them to the carrier depresses the lever K,and thus through the connections previously described rotates the table one-quarter turn, the mold moving from the blowing position to the position numbered 2 at the top of Fig. 1, the mold-section still remaining closed, and another mold moving from the position numbered 4 is moved into the blowing position ready for the same or another blower to blow a bottle therein. The mold at the position numbered 2 will thus remain during the blowing of the next bottle and for sufficient time to cool if that time is necessary, as is required in certain classes of Work. The downward movement of the lever K rocks the lever I, and the lever I has connected to it a rock-arm U, which is connected to a rock-arm U by connecting rod U2, the rock-arm U being on a shaft V, to which is connected the bell-crank lever T. Thus the downward movement of the lever K will raise the foot-rod T2 to its original position and return the slide T, ready for another operation. It is obvious that as this has a rigid connection the subsequent movement of the foot-rod T2 will raise the lever K to its initial position. After the mold has remained at the position numbered 2 during the blowing of the next article the next operation of the lever K moves it from that position to the position numbered 3, and in traveling from the position 2 to the position 3 the mold will be opened. As the mold leaves the position 2 the first operation of opening is to slightly lift the mold-section L', so as to free it from the shoulder of the bottle, and then very slightly open it. The lifting operation is effected by the running up of the roller h upon the cam e on the camway R, which is shown in Fig. 6, that gure illustrating the section L of the mold in its slightly-raised position.

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opened, but the section L does not commence to open until the section L' has first been lifted, as described, and opened suiciently to allow a film of air to pass around the bottle upon one side and stiften the glass by chilling it and also to admit the air gradually, so that the opening ot' the mold will not prod ucc sutlicient suction to draw out orbulge the plastic bottle. The section L is opened by the engagement of the head of the pin u with the cam tr during the travel ofthe mold from the position 2 to the position 3. This cam is shown in dotted lines in Fig. l and is shown in elevation at the right hand of Fig. 2, being formed upon or attached to the stationary table or top B. When the mold reaches the position 3, it is opened wide enough to permit the withdrawal of the blown article, and all that is required in the further movement from position 3 to the blowing position is that the section L shall be moved by the camway R to the closed position previously described. In order to stop the machine at the proper point, I have a series of pins fr, Figs. l and 3, which are adapted to strike against the end of the slide T when that slide is in its innermost position, and thus stop the table at the proper point. It is evident that as soon as the slide T is moved longitudinally when the operator presses down upon the rod T2 the slide will be withdrawn from the path of the pin :c and the table be then moved to the next position.

I preferably apply a brake to the table to prevent any rebound or backward movement. This may be ot' a'ny suitable form. I have shown the friction-roller V' journaled in the slide V2 upon the slide T and held in frictional engagement in the inner position of the slide T by means of the spring V8. Any other form of brake may be employed for this purpose.

By arrangingthe pin S in the end of the arm S of some considerable length I am enabled to use molds of different sizes upon the same machine. Vertical adjustment is also provided between the handle P and the roller 7L by the adjustable engagement ofthe stem c in the block Q, and longitudinal adjustment between that block and the mold-section L is provided by means of the set-screw d.

l. An operating device for glass-blowers molds comprising in combination with a carrier, and a multiple of molds thereon, of means by which the operator may close the mold at the blowing-point, and mechanism by which an operator may move the carrier and thereby open a mold containing a blown article.

2. An operating device for glass-blowers molds comprisingin combination with an endless carrier, and a mold thereon, of means by which the operator may close the mold at the blowing-point, and mechanism by which an operator lnayactuate the carrier to move the filled mold away from the blower and for opening the mold during such movement.

3. In a glass-blowers machine, a traveling sectional mold, means for actuating one section of the mold from its open to its closed position, in moving to the blowing-point, and separate, operator-controlled means for closing the other section.

4. Ina glass-blowers machine, means for raising a mold-section, and means for separating the sections after such raising.

5. In a glass-blowers machine, means for performing the following operations successively for raisinga mold-section, then slightly opening the same so as to admit a film of air around the article on one side, and then to gradually open the mold.

6. In a glass-blowers machine, means for raising one section of a sectional mold, means for slightly opening the same, and means for then gradually opening both moldsections. U

7. In a glass-blowers machine, a traveling sectional mold, means operating during the 9 travel to vertically separate the mold and article, and then to gradually open the mold sections.

8. In a glass-blowers machine, a traveling sectional mold, means operating during the travel of the mold to first separate a moldsection from the article by a vertical movement, means for then slightly opening the said section, and means for then opening the mold gradually, to its open position.

9. In a glassblowers machine, a movable mold-carrier, a mold thereon having movable mold-sections, means for opening both sections and for closing one section during the travel of the mold, and means under the control of the operator forfclosing the other scc tion at the blowing-point.

lO. In a glass-blowers machine, a sectional mold movable to and from the blowing-point, means for actuating one mold-section to its closed position in moving to the blowingpoint', the other mold-section being free, and operator-controlled devices for closing said free section. l

1l. In a glass-blowers machine, a moldcarrier, a sectional mold thereon, a stationary cam means connecting a mold-section therewith, such connection comprising a vertical and horizontal adjustment.

12. In a glass-blowers machine, a moldcarrier, a sectional mold thereon, a cam adjacent to the carrier, a connection between the mold-section and cam comprising the block Q, connected to the mold-section, the roller h connected to the block Q and engaging the cam, the inclined head 7c on the block Q, the counterweighted roller adapted to be struck by the head 7c, and the plate/r over which said roller travels for the purpose described.

13. In a glass blowers machine, a movable mold-carrier, a multiple of molds thereon, an arm connected to each mold through which it may be closed, and a common mechanism controlled by the blower into operative relation with which the arm of each mold comes successively.

14. In a glass-blowers machine, a moldcarrier, -the molds thereon, an actuating device for the carrier, a mold-closing device, and connections between the two whereby they are required to be successively operated and whereby the operation of one resets the other.

15. In a glass-blowers machine, a rotating mold-carrier, sectional molds thereon, the cam around the carrier, a connection from the outer mold-section' to said cam, said cam being shaped to first open, and then to close said mold-section, in the revolution of Lthe carrier, an operating connection to the inner mold-section, for opening said section in the revolution of the carrier, and means by which the operator may close the inner section at the blowing-point.

' 16. In a glass-blowers machine, a movable mold-table, sectional molds thereon, means by which the operator may move it through fractional parts of a revolution, means for holding the mold closed during the first operation, and for opening the moldl having the blown article therein, during the succeeding operation, said means comprising devices for irst separating the article and mold vertically, then opening the mold-sections successively.

17. In a glass-blowers machine, a movable sectional mold, successively-operating mechanism for first opening both sections, for next closing one section during the movement of the mold and means by which the operator may subsequently `close the mold.

18. In a glass-blowers machine, a sectional mold, mechanism for positively opening and closing one section of the mold and mechanism for opening the other section simultaneously with the opening of the first section during the movement thereof, and independent means under the control of the operator for closing said second section after the iirst section is closed.

19. In a glass-blowers machine, a sectional mold, means for opening the same comprising devices for initially opening one section to admit a thin film of air around one side of the article, and devices for thereafter opening the mold to permit the article to be withdrawn.

:20. In a glass-blowers machine a sectional mold, means by which the operator can move the mold away from the blowing-point to the opposite side of the machine where the article may be removed, means for opening the mold during such movement, means at the taking-ont point by which the operator may return the mold to the blowing-point, devices for closing one section during such movement, and devices by which the blower can close the other section.

21. In a glass-blowers machine, a sectional mold, operating-cams for actuating the moldsections, connecting means between the cams and mold-sections comprising a vertical and horizontal adjustment.

22. In a glass-blowers machine, a sectional mold, its handles, such as P, of a bracket adjustable longitudinally thereon, and an actuating-cam connection with such bracket comprising a vertical adjustment.

In testimony whereof I aiiix my signature in presence of two witnesse's.

CLEMENT A. DUNBAR.

NVitnesses:

JAMES WHITTEMORE, M. B. ODOGHERTY.

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