Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7328641 | Method and apparatus for cutting glass material To provide a method for cutting a glass material wherein the glass material can be certainly cut a glass gob having a uniform quality and a uniform temperature distribution, without being deformed or damaged. Upon cutting a glass material 20 discharged from a... | 02/12/2008 |
| 6994319 | Membrane gas valve for pulsing a gas A gas valve for pulsing a gas comprises a housing having an inlet port, an outlet port, a membrane, and an actuator, wherein the actuator selectively engages the membrane with the inlet port. In one embodiment, a plurality of the gas valves are coupled together to f... | 02/07/2006 |
| 6868698 | Plate-shaped shearing knife A plate-shaped shearing knife is provided made of hard metal for shearing off allotments of liquid glass. The hard metal of the shearing knife has a thermal conductivity of at least 85 W/mK. Next to a V-shaped or circular-shaped cutting region -2-, there are ... | 03/22/2005 |
| 6634188 | Plate-shaped shearing knife A plate-shaped shearing knife is provided made of hard metal for shearing off allotments of liquid glass. The hard metal of the shearing knife has a thermal conductivity of at least 85 W/mK. Next to a V-shaped or circular-shaped cutting region -2-, there ... | 10/21/2003 |
| 6289696 | Apparatus for severing gobs from glass strands In an apparatus (1) for the severing of gobs from one or more strands (2;3) of molten glass, the severing of each gob is effected by a shear blade pair (5;6). A shear blade (7,8;9,10) of each shear blade pair is arranged on an associated, pivotably mounte... | 09/18/2001 |
| 6047567 | Shear blade for glass gob shearing apparatus A unitary shear blade (20) for shearing a plurality of spaced apart streams of molten glass into individual gobs, the shear blade having a free end (20a) and an opposed end (20b). The free end is provided with a plurality of side-by-side shearing surfaces... | 04/11/2000 |
| 5987925 | Glass gob shearing apparatus with internally cooled blades A parallel shear apparatus (20) for simultaneously shearing a plurality of streams of molten glass (A, B, C) into gobs comprising opposed carriages (22, 24) which are repetitively moved along rectilinear opposed paths toward and away from one another by a... | 11/23/1999 |
| 5772718 | Glass gob shearing apparatus with internally cooled blades and method of shearing employing same A parallel shear apparatus (20) for simultaneously shearing a plurality of streams of molten glass (A, B, C) into gobs including opposed carriages (22, 24) which are repetitively moved along rectilinear opposed paths toward and away from one another. Each... | 06/30/1998 |
| 5711777 | Glass gob shearing apparatus with contact lubricated blades and method of shearing employing same A parallel shear apparatus (20) for simultaneously shearing a plurality of streams of molten glass (A, B, C) into gobs comprising opposed carriages (22, 24) which are repetitively moved along rectilinear opposed paths toward and away from one another. Eac... | 01/27/1998 |
| 5246478 | Apparatus for cutting molten glass for forming glass products At least a pair of shear blades cuts a stream of viscous molten glass descending from a glass feeder. The paired shear blades continuously move, while retaining a substantially horizontal position, about a horizontal axis along looped paths symmetrical to... | 09/21/1993 |
| 5232483 | Quick change shear assembly for glassware forming machine A shear mechanism has a shear assembly with shear assembly that can be quickly changed. The shear assembly supports a vertically displacable shear which is operated via a drive system which is connected to the shear mechanism frame. With the release of to... | 08/03/1993 |
| 5207815 | Mechanism for shearing discrete gobs of molten glass Shears are supported for reciprocating displacement within an open frame so that they can be conjointly displaced from retracted positions to advanced overlapping positions where a runner of molten glass will be severed. A pair of covers close the open fr... | 05/04/1993 |
| 5188653 | Apparatus for severing gobs from glass streams Each glass gob is severed by a shear blade pair (6; 9). The shear blades (7, 8; 10, 11) are arranged on shear arms (12, 13) whose movement is synchronized with each other by means of a gear mechanism (16) A first shear arm (12) is drivable pivotably by a ... | 02/23/1993 |
| 5180413 | Shear mechanism for glassware forming machine A shear mechanism has a pair of shear assemblies mounted on parallel guide rails for reciprocating displacement controlled by a rack and pinion assembly having a rack driving each shear assembly. The racks are parallel and horizontally spaced and their mo... | 01/19/1993 |
| 5049179 | Glass gob cutting device having a guide with independent movement A glass gob cutting device in a gob feeder for cutting a gob of molten glass supplied from an orifice of a furnace and supplying the cut gob of molten glass to a glass forming machine. The glass gob cutting device includes a pair of shearing blades for cu... | 09/17/1991 |
| 4961773 | Apparatus for processing a melted glass stream into a melted glass lump of a predetermined volume On shearing a melted glass stream flowing along a first direction at a first speed into a melted glass lump flowing along the first direction at a second speed faster than the first speed by a cutter section, the cutter section is closed and opened along ... | 10/09/1990 |
| 4869746 | Straight line shear mechanism A straight line shear mechanism has rack driven shears which are operated by a pneumatic cylinder. Opposite ends of the operating rod of the pneumatic cylinder are connected via nail head couplings which permit rotation of the rod about its axis and which... | 09/26/1989 |
| 4859227 | Straight line shear mechanism A straight line shear mechanism has rack driven shears which are operated by a pneumatic cylinder. The shear slides provide a barrier to infrared energy directed at the pneumatic cylinder. To cool the cylinder, a perforated cooling tube is connected to am... | 08/22/1989 |
| 4793849 | Heat shield for refractory tube in molten glass feeder A molten glass feeder includes a feeder bowl and a rotating refractory tube. Molten glass is discharged through openings in an orifice plate which are controlled by vertically displaceable needles. To reduce heat loss through the refractory tube, a heat s... | 12/27/1988 |
| 4781746 | Drive apparatus for straight line shear mechanism An improved drive assembly for a straight line shear mechanism or like, reciprocably mounted mechanism of a glassware forming machine wherein the mechanism is coupled by an arm to a drive rod, the improvement lying in the provision of an adaptable joint b... | 11/01/1988 |
| 4699643 | Straight line shear This relates to improvements in drives for shears, particularly shears for severing gobs from a glass runner. All of the drives incorporate a drive pinion for reciprocating racks which are secured to slides of the shear. The pinion is rotated first in one... | 10/13/1987 |
| 4592715 | Apparatus for use in shearing gobs from a vertical column of plastic material The apparatus comprises two horizontally extending blades (22, 24) mounted for turning movement about a common vertical axis (26). The blades each have a hole (28; 30) therein so arranged that, when the blades are in a first condition, the holes are align... | 06/03/1986 |
| 4554000 | Molten glass spout bowl refractory tube support mechanism and method of control A swing out support frame is provided on X-Y slide support structure such that one of several different diameter refractory tubes can be supported in a fixed spout bowl for rotation inside the bowl, and also for electrically controlled and non-electricall... | 11/19/1985 |
| 4544397 | Feeder mechanism for supplying gobs of plastic material The feeder mechanism comprises apparatus for shearing gobs from plastic material e.g. glass comprising a set of shear blades movable between open and shearing positions thereof. A driving system for the shear blades comprises a cam having a cam track and ... | 10/01/1985 |
| 4475938 | Cutting device for sectioning liquid glass strand The invention relates to a cutting device for the sectioning of a liquid glass strand into individual fragment (gobs) to be further processed into hollow glass articles. In order to achieve a trouble-free cutting process as well as a relatively small mass... | 10/09/1984 |
| 4473389 | Glass gob feeding device A feeding device has the object to ensure the supply of a continuously flowing glass strand and to divide it into predetermined gobs thus establishing the weight of the individual gob and thereafter to proceed with the final sectioning. It is known to act... | 09/25/1984 |
| 4388100 | Shear mechanism for machines for the manufacture of articles of glass or other materials In a glass molding machine, for example, of the type known in the industry as I.S. machines, an apparatus for shearing molten glass into gobs as the glass issues from a feeder includes mechanisms for independently adjusting both the horizontal and vertica... | 06/14/1983 |
| 4257800 | Decorative air bubble formation in glassware A glass article such as a sham bottom tumbler with a decorative air bubble encapsulated in its base is produced on existing automatic glass-forming machines by injecting a bubble of air into a charge of molten glass in the gob-feeder section of a glass fu... | 03/24/1981 |
| 4253862 | Decorative air bubble formation in a glassware article A glass article such as a sham bottom tumbler with decorative air bubble encapsulated in its base is produced on existing automatic glass-forming machines by injecting a bubble of air into a charge of molten glass in the gob-forming section of a glass fur... | 03/03/1981 |
| 4249927 | Method and apparatus for manufacturing glass products by controlling free flow of low viscosity molten glass According to the first method according to the present invention, there is provided a method for manufacturing glass products by casting low viscosity glass into a mould while controlling free flow of the glass by storing and holding the glass continuousl... | 02/10/1981 |
