US1745794A - Glass-fabricating machine - Google Patents

Description

Feb. 4, 1930.

R. F. HATCH GLAS S FABRICATING MACHINE Filed Oct. 28, 1927 3 Sheets-Sheet l Wkvrey Feb. 4, 1930. Y HATCH 1,745,794

GLASS FABBICATING MACHINE Filed 061'.- 28, 1927 3 Sheets-Sheet 2 [467712.55 [ht/817751. 1Q C 7 Kim. fioswellfifiafch.

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Feb. 4, 1930. R. F. HATCH GLASS FABRICATING MACHINE Filed 001;. 28, 1927 3 Sheets-Sheet 5 Patented Feb. 4, 1930 UNITED STATES PATENT OFFICE BOSWELL F HATCH, OF WEST HARTFORD, CONNECTICUT, ASSIGNOR T HARTFORD- EMPIRE COIPANY, OF HARTFORD, CONNECTICUT, A CORPORATION OF DELAWARE GLASS-FABRICATING MACHINE Application filed October 28, 1927. Serial No. 229,461.

My present invention relates 'to glass fabricating mechanism wherein a parison 1s first formed in a'parison-mold and is then transferred to and blown to finished form in a blow-mold.

In some types of these machines, particularly in the non-turret type, the blow-mold is moved into the transfer position and then moved awa therefrom, as for instance to make way or another blow-mold which receives a parison from the same source. In such machines the parisons are blown to final form while the blow-molds are still in the transfer position. As the time required to 16 blow the parisons to final form in the case of some characters of ware is relatively long,

the result is that if such ware be fabricated on.

these types of machines the cycle'of parison formation and transfer is prolonged and the rate of 'roduction materially reduced.

' The 0 ject which I have in view is the improvement of such machines to enable them to produce such ware without slowing up their operation or reducing their production rate and at the same time providing suflicient time for the finishing blows- In accordance-with my invention I provide means whereby the application of the finishing blow to the parison which has been deposited in the blow-mold may proceed while the blow-mold is moving away from the transfer position so that another blowmold may without delay be moved into the transfer position to receive the next parison- Preferably I arrange the finishing blow to start before the blow-mold is moved from the transfer position and to continue the finishing blow through as much of said movement as is necessary to provide the requisite blowing period. However, if necessary, the application of the finishing blow may be continued until after the blow-mold has attained its other or take-out position.

Novel features of construction and also of arrangement of parts will appear from the following description;

In the accompanying drawings wherein I have illustrated the best embodiment of the principles of my invention now known to me, Fig. l is a plan-view; Fig. 2 a rear eleva- 'on the box support 5 which in turn is slidably tion, and Fig. 3 partially an end view looking from the right in Fig. 1 and partially a sectional view through the parison -mold mounting and the transfer device.

Referring to the drawings, a parisonmold is indicated at 1 and two blowmolds at 2 and 3 respectively. The parisonmold is mounted on a hollow base 4 and the blow-molds are mounted in spaced relation mounted on a base 6 which is rigid with the base 4. The path of the movement of the box 5 is transverse to the long axis of the base 4.

The molds are of the partible type and as the mechanisms for opening and closing the several molds are alike and are not in themselves the subject matter of the present invention I will briefly describe that of the parison-mold only.

The mold-parts are carried respectively by the concentric sleeves 7 and 8 which are rotatably mounted on the vertical pintle 9. Said sleeves are-coupled by crank and link connections to the pinions 10 and 11 respectively, and said pinions are rotated to open and close the mold by a double rack 12 carried by the piston rod-13 of a fluid pressure cylinder 14.

15 indicates the partible neck-ring which, when the parison-mold 1 is closed, is positioned below the same. The neck-ring parts are carried by the levers 16 which are mounted on the brackets 17 mounted on ashaft 18 for limiting longitudinal movement for opening and closing the neck ring parts. The ends of the shaft 18 are journaled in the stands 19 rising from the base 4. Between the brackets said shaft is provided with a pinion 20 meshing with a vertically disposed rack 21 on the piston rod 22 of the fluid pressurecylinder 23. The neck-ring thus forms a part of the transfer device by means of which the parison, when the parison-mold is opened, is swung up out of the parison-mold and is deposited in the blow-mold which is in the transfer position occupied by the blowmold 2 in the drawings.

24 is the neck-forming plunger carried by the piston rod 25 of the fluid-pressure cylinder 26 and employed to enter the neck-ring from below to assist in forming the neck of the parison.

- 27 is a blow-head, whichis swung into capping relation' withthe parison-mold 1 after the mold-charge hasbeen deposited in the latter to compact the mold-charge down'into the neck-ring and the parison-mold.

The'box 5 is periodically moved back and forward to alternately spot the blow- molds 2 and 3 in the transfer position to receive a parison, such position being shown in the case of the blow-mold 2 in the drawings. Thus 28 is a fluid-pressure cylindersupported from the base 4 and having its piston rod 29 connectedto the box 5.

Each of the blow-molds has associated with it a blow head 30 which isarranged to be moved over into alinement with-the upper end of the blow-mold and then lowered into capped relation with the latter and after the completion of the blowing operation to be raised from the blow-mold and to be swung aside out of theJway.

Thus I have shown the blow head mounted on the outer end of an arm 31 clamped on the upper end of the extension 32 of the piston rod of a fluid-pressure cylinder 33 which is mounted on the'box 5. The extension 32 is arranged for rotary movement on its axis, and such movement is provided for by the slot 34 in the fixed sleeve 35 through which said extension 32 extends, said slot being engaged by a pin 36 on said-extension.

The slot 34 is laid out to-provide the swinging movement of the blow-head hereinbefore mentioned;

- In the operation of the machine, the blowmolds are,-by the movement of the box 5 alternately brought into the transfer position, and when the parison has been deposited in the blow-mold the blow-head associated withvthe blow-mold is positioned in capped relationwith the mold and the blowin oper- 'ation begun and proceeded with while the blow-mold is being moved away from the transfer position and another blow-mold moved into said os ition, and if desired until the take-out is a out to occur.

It. is thus evident that a blowin period suflicient to finish substantially all 'nds of parisons maythus be provided for in connection-with the types of machines herein referred to.

' Obviously my improvement enables the rate .of production of the machine to be greatly increased owing'to the elimination of the I lag or' delay which now takes place-while the arison is bein finished in the blowmol remaining in't etransfer osition,'and the. machines are also ada ted or the fabrication of gwa're which hit erto could not be fabricated thereby owin to the brief-periods during which the finishing .blow could be a bed. I

Pitta-I desiretoclaim is:-

1. In a glass fabricating machine, the combination of a fixed parison-mold, a slidably mounted blow-mohr means for transferring the parison from the parison-moldto the blow-mold, means for periodically moving the blow-mold into and away from the transfor position, and blowingmeans moving with --the blow-mold for blowing the parison in the blow-mold while the latter is moving away from its transfer position.

2. In a glass fabricating machine, the combination with a parison-mold located in a fixed neck-down position, of a plurality of blow-molds each mounted in a neck-up po-' bination with a parison-mold located in a fixed position, of a pair of blow-molds, means for reciprocating said blow-molds-so as to position them alternately in transfer relation with the parison-mold, means for transferring parisons from the parison-mold alternately to each blow-mold when it is in the transfer position, and individual blowinghmeans for each mold and movable therewit 4. In a glass fabricating machine, the combination .With a parison-mold located in a fixed neck-down position, of a plurality of blow-molds disposed in neck-up position, a slide upon which said blow-molds are mounted, means or reciprocating said slide to present said blow-molds successively to a transferring position, means for successively transferring parisons formed in said parisonmold from a neck-down position in said parison-mold to a neck-u position in the blow-mold in said trans er position, and

means moving with each of said blow-molds for supplying final blowing air to the pari son within said blow-mold.

Signed at Hartford, Conn, this 27th day I of October, 1927. v

ROSWELL F. HATCH.

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