Glass manufacturing – Control responsive to condition sensing means – Glass working fluid or treating fluid control
Reexamination Certificate
1999-03-05
2001-08-07
Vincent, Sean (Department: 1731)
Glass manufacturing
Control responsive to condition sensing means
Glass working fluid or treating fluid control
C065S029110
Reexamination Certificate
active
06269662
ABSTRACT:
The present invention relates to machinery for manufacturing glass containers and more specifically to an I.S. (individual section) machine such as disclosed in U.S. Pat. No. 5,803,945.
BACKGROUND OF THE INVENTION
An I.S. machine is made up of a number (8,10,12, . . .) of identical sections each of which receives a gob of molten glass and forms the gob into a bottle. The bottle is formed in a two step process. The gob is received by a blank mold at a blank station and is formed into a parison. The parison is transferred by an invert
eck ring mechanism to the blow molds at a blow station and is blown into a bottle. Operating air is supplied to each section to operate section mechanisms. “High pressure” and “low pressure” air may be required and where the two step process is the “press and blow” process, a plunger will be advanced into the gob within the blank mold to form the parison with “plunger up air”. Bottle making air will also be required. Where the two step process is the “blow and blow” process “settle blow” air is required to settle the molten glass around the plunger. Additionally “final blow”, “finish cooling”, and “counter blow” air may be required. In addition, air may be required for associated section mechanisms such as the pushout (see U.S. Pat. No. 5,527,372 which uses pressurized air at the pockets (“pocket air”). These pneumatic services are channeled from a main supply into a plurality of manifolds that are located on or about the machine. Each manifold requires a pressure regulating device so that the pressure may be controlled as required for each function.
In state of the art machines, each pressure regulating device is a part of the individual pneumatic service and is located to be convenient to that pneumatic service. As a result the regulating devices are scattered about the machine and each is individually settable by the operator.
OBJECT OF INVENTION
It is an object of the present invention to provide a pneumatic machine control unit that will locate all the pressure regulating devices at a single location and enable all the pressure regulating devices to be automatically set for each job.
Other objects and advantages of the present invention will become apparent from the following portion of this specification and from the accompanying drawings that illustrate in accordance with the mandate of the patent statutes a presently preferred embodiment incorporating the principles of the invention.
REFERENCES:
patent: 3634660 (1972-01-01), Moran et al.
patent: 4247317 (1981-01-01), Wood et al.
patent: 4369052 (1983-01-01), Hotmer
patent: 4636238 (1987-01-01), Sidler
patent: 4705552 (1987-11-01), Liska et al.
patent: 5580366 (1996-12-01), Farkas et al.
patent: 5609659 (1997-03-01), Peterson et al.
Dean Myles Kneeland
Kammonen Jamo
Pinkerton Steven J.
Sattlin Per
Stenholm Arne
Emhart Glass S.A.
Smith Spencer T.
Vincent Sean
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