US659290A - Glass-blowing machine. - Google Patents

Description

No. 659,290. Patented 00L 9, |900.

L. H. CULBURN.

GLASS BLOWING MACHINE.

(Applicatiop filed: Mar. 30, 189B.)

No. 659,290; Patented uct. 9, |900. L. H. coLBunN.

GLAss BLowmG MACHINE.

(Application led Max-.'30, 1898.)

(l0 Nudel.) 2 Sheets-#Sheet 2.

'UNITED STATES 1PATENT OFFICE.

LESLIE H. OOLBUHMO-F TOLEDO, OHIO, ASSIGNOR To THE TOLEDO GLASS COMPANY, OF SAME PLACE.

G LASS-BLOWING IVIACHIINE.

SPECIFICATION forming part of Letters Patent No. 659,290, dated October 9, 1900. Application filed March 30, 1898. Serial No. 675,655. (No model.)

T @ZZ wwm i2? may OOTwWb: valve or other controlling device for the air.

Be it known that I, LESLIE H. COLBURN, a With this manually-operating controlling decitizen of the United States, residing at Tovice I have devised means so that the operator ledo, in the county of Lucas and State of Ohio, may control the Opening of the valve, as well 5 have invented certain new and useful Imas the time in which it shall open, from a parprov'ements in Glass-Blowing Machines, of tial to a full pressure and the time in which which the following is a specification, referit shall remain open. ence being had therein to the accompanying G represents the air-supply pipe from any drawings. A A 4 Y i suitable source of air-supply, and this has at 6o 1o The invention consists in the construction its lower end a coupler G to receive the end of a glass-blowing machine, and particularly of the blowpipe H, which may be thensual in the'following: first, in means for controlblowpipe and which is supported by any suitling the air-supply to the article to be blown, able means in proper relation to the mold and which is controlled by a manually-operated the air-supply. Ihaveshown it provided with I5 means,having devices which control variation theiusual enlargement a', resting in a bearing of pressure by varying the time interval rein the frame of the machine. quired to open the valve to its full pressure I is a controlling-valve which controls the and means for varying the time interval of `air-supply in the pipe G, and this valve is of blowing; second, in the construction of means ythe construction shown in Figs. 2 and 3. The 7o 2o for enabling the operator to determinel the valve is shown as a plug-valve, having an inamount of pull required to give any desired let-port a, the exit-port b, and the-by-pass c time interval; third, in the construction, arin its plug and having suitable inletl and exit rangement, and combination of the various ports adapted to register with the ports a and parts, all as more fully hereinafter described.y 'b in the casing, and the exhaust-port d for 75 z 5 In the drawings, Figure 1 is a front elevathe exhaust of the air from the blowpipe tion of a machine embodying my invention, through the by-pass when the valve is shut showing the dash-pot partlyin section. Figs. O. In Fig. 2 the valve is shown closed to 2 and 3 are sections through the controllingthe admission of air into the blowpipe, and valve, Showing its operating mechanism in the blowpipe is connected with the atmos- 8o 3o elevation and in different positions at differphere through the by-pass c and the port d.

ent periods of operation. In Fig. 3 the valve is shown with the ports wb A isasuitable supporting-frame for the opalined with the inlet and exit ports in the erating parts of the machine. casing, as when it is supplying air to the B is a table which supports the molds C, blowpipe.

3 5 which are opened by any suitable means, such The coupler G is of such construction as to as by operating the lever D, which has suitgrasp the blowpipe, so that when rotary moable connection with the mold-sections. l Betion is imparted to the coupler the blowpipe low the. mold is a tank E, which receives the will also be turned. 'I have shown the coupwater from the spraying-nozzle F and which ler rotated by means of suitable gearing J, 9o 4o has suitable means for carrying away the driven from any suitable source of power. water therefrom. Theseparts may be of any The parts being arranged as thus described, desired construction, as their particular conthe operator gets the necessary gather on the struction forms no part of my present invenend of the blowpipe H, inserts it into the mation. chine with the upper end of the coupler Gr. 45 In the present state of the art machines have I have shown the coupler G'slidingly engagbeen constructed for blowing glass in which ing in bearings-upon the air-supply pipe and the valve for controlling the air-supply was raising and lowering through suitable conopened and closed automatically by means of necting-levers by means of the pull-rod K, so power machinery. In my present device I that the operator may insert the blowpipe latroo 5o desire to construct a machine in which the erally into the proper position and then opoperator shall himself directly operate the erate the rod K and lower the coupler onto the blowpipe, having previously closed the mold-sections by operating the lever D. In this position of the parts the blowpipe is open to the atmosphere through the by-pass c and the ports d. The operator now admits air to the blowpipe to blow the article by turning the valve I. This could be done by hand; but it would be practically impossible to get the time interval for blowing properly regulated and also impossible to get the gradual increase in the air-pressure, which is desirable in glass-blowing, except by the interposition of some controlling means applied to the valve or the air-supply. I have shown the following device as one means of effecting this controlling of the air-supply.

L is an arm secured to the plug of the valve.

M is a lever journaled on the plug beside the securing-point of the arm L.

N is a latch or hook on the lever M, engaging a pin N on the arm L to lock the two together.

O is a hand-pull, by means of which the operator may draw down the lever M and with it the arm L, and thereby open the valve.

P is a dash-pot having a piston P' therein with a restricted port Q, through which the liquid below the piston may pass, to determine the time interval required to lower the piston a definite distance. The piston is connected to the lever M by a connecting-rod R. Thus the operator pulling on the pull O can only slowly move down the arm L through the connections described, according to the speed with which the fluid can pass through the port Q, and thus will gradually allow a light pressure to enter the blowpipe, and then as the valve opens fully the full pressure of air will be admitted therein.

When the desired opening of the valve has been effected and the desired time interval of blowing has elapsed, the latch N will strike upon a pin S, disengage the latch from the arm L, when the spring T will immediately draw the arm back to its initial position, (shown in dotted lines in Fig. 3,) immediately closing the valve and restoring atmospheric pressure in the blowpipe in the article to be blown. The mold can then be opened and the blowpipe removed in the usual manner.

The piston P is provided with a suitable enlarged port Q, so as to enable the piston to be quickly returned when the operator pushes u p on the pull-rod O to restore the parts to their normal position.

I may and preferably do make the pin S adjustable in its supporting-bracket S, so that the length of the stroke of the operating-lever may be controlled, and thereby the time interval more or less graduated.

I may and preferably do provide a means for indicating to the workman the amount of pull that is required approximately to give greater exactness to the time interval. That I have shown effected by the following mechanism: The pull-rod O is made in two parts, and between those two parts is placed a spring U, and the parts are provided with indices or pointers V, one of which may be made adjustable by any suitable means. The operator then may pull with sufiicient power upon the pull-rod to cause the spring to be com# pressed until the two pointers are side by side, which will indicate a pull sufficient, for instance, to require six seconds to pull the lever M down. By adjusting the pointers nearer together or farther apart different degrees of pull maybe indicated.

With a strictly manually-operated valve to control the time interval with great nicety and practically as line as with an automatic machine, in this device, which is intended to be operated by the man instead of by power, I desire to avoid any unnecessary exertion on the part of the workman in any operation, and therefore instead of dipping the molds, as has generally been done heretofore in glass-blowing machines, I sprinkle the pastelined surfaces through the nozzle F, previously mentioned, which may be provided with any suitable means of controlling the watersupply.

What I clailn as my invention isl.. In a glass-blowing machine, the combination with the device to supply air to the article to be blown, of a controlling device therefor, and a manually-operated actuating device for said controlling device having means for aiecting the speed of the controlling device.

2. In a glass-blowing machine, the combination with the device to supply air to the article to be blown, of a controlling device for such air-supply, a manually-operated actuating device for said controlling device, and means for timing the movement of the controlling device.

3. In a glass-blowing machine, the combination with the device to supply air to the article to be blown, a valve controlling the same, means for opening said valve directly by the power of the operator and a retarding device applied to such opening means.

4. In a glass-blowing machine, the combination with the blowpipe and a device to supply air thereto, a controlling device for theair-supply having a timed period of operation, means for shutting oif said air-supply at the end of such period and means for automatically restoring atmospheric pressure in the blowpipe on the shutting olf of the air-supply.

5. In a glass-blowing machine, the combination with the controlling device for the airsupply, of an actuating device therefor, comprising the lever M, the arm L adapted to be moved in one direction by the lever and means for disconnecting the arm from the lever returning it independently thereof, substantially as described.

6. In a glassblowing machine, the combination with the air-supply pipe, of a valve, the arm L connected thereto, the lever M beside the arm L, a hook connecting the two,

IOO

a spring T connected to the arm and disengaging device for the hook at the end of the movement of the lever and a pull device for operating the lever.

7. In a glass-blowing machine, the combination with the controlling-valve, having operating means adapted to manually move the same, comprsinga lever M, a pull-rod and a retarding device, comprising a dash-pot, and a piston working therein with a restricted port, substantially as described.

8. In a glass-blowing machine, the combination with the air-controlling device, of'a manually-operated Vactuating means therefor, a retarding device for said actuating means, and means for indicating the pull required for a given time interval, substantially as described.

9. Ina'glass-blowing machine, the combination with the con trolling device for the airsupply, of an actuating device and a retard- LESLIE H. COLBURN.

Witnesses:

JAMES WHITTEMORE, O'r'ro F. BARTHEL.

Images