Abstract: The invention relates to the press bending and tempering of glass sheets, especially for use as glazings in vehicles. When the press bending system is not located in a heated environment such as a furnace, it is important to maintain the glass sheets at a sufficiently high temperature for an adequate degree of temper to be achieved on quenching the sheet. The present invention provides a method of bending and tempering a thin glass sheet comprising pressing the substantially horizontal sheet between moulds having opposed complementary shaping surfaces, at least one of the surfaces being heated, and subsequently quenching the surfaces of the sheet characterised in that the heated shaping surface is maintained at a temperature in the range from 200.degree. C. to 350.degree. C.

Abstract: Glass sheets are press bent and tempered, especially for use as glazings in vehicles. Such glazings are required to be accurately bent to a complex shape while meeting high standards of optical quality and fracture safety at an acceptable cost. A method of bending and tempering a glass sheet is provided comprising heating the sheet in a furnace, including heating at least one portion of the sheet to a higher temperature than another portion, conveying the sheet out of the furnace and into a press bending station, shaping the sheet by pressing it between opposed complementary upper and lower press members, at least one of the members being internally heated, transferring the bent glass sheet onto a shuttle carrier ring conforming to the periphery of the sheet, and tempering the sheet while supported on the carrier ring. A corresponding apparatus is also described.

Abstract: An improved support structure for an upper press member that broadens the bending capabilities of a conventional press bending apparatus. The support structure is carried on the upper platen frame of the bending apparatus and is adapted for providing reciprocating movement between the upper press member and the upper platen frame. The support structure comprises a base plate which is attached to the platen frame and a subplate which is adapted for supporting the upper press member. Fluid activated cylinders are mounted on the base plate, with the free end of their piston rods affixed in a supporting manner to the subplate whereby actuation of the cylinders will provide relative movement between the subplate and base plate and therefor the upper press member and the platen frame.

Abstract: An architecture for a dynamic video random access memory on a single integrated circuit chip having internal circuitry for performing drawing or replacement rule logical operations on an addressed line of stored video information in the RAM and further having the write masking circuitry for modifying selected portions of the line of stored video information between selected START and STOP bit locations within the line.

Abstract: An architecture for a dynamic video random access memory on a single integrated circuit chip having internal circuitry for performing drawing or replacement rule logical operations on an addressed line of stored video information in the RAM and further having the write masking circuitry for modifying selected portions of the line of stored video information between selected START and STOP bit locations within the line.

Abstract: A distributed error correction circuit for a synchronous high performance multiprocessor bus wherein the memory directly transfers data containing error fields to the multiprocessor bus without performing an error check. Each device, such as a plurality of processors or input/output busses, connected to the multiprocessor bus has error correction circuitry located between the multiprocessor bus and the device to perform error correction while the data is being transferred off the multiprocessor bus and stored in data buffers at the bandwidth of the multiprocessor bus. The error correction circuit detects and corrects data errors caused by the memory or the multiprocessor bus. The stored data is later transferred out of the buffers at the bandwidth of the device. Data from a device is delivered into the device buffers at the bandwidth of the device for later delivery of the data into memory at the bandwidth of the multiprocessor bus.

Abstract: An improved support structure for an upper press member that broadens the bending capabilities of a conventional press bending apparatus. The support structure is carried on the upper platen frame of the bending apparatus and is adapted for providing reciprocating movement between the upper press member and the upper platen frame. The support structure comprises a base plate which is attached to the platen frame and a subplate which is adapted for supporting the upper press member. Fluid activated cylinders are mounted on the base plate, with the free end of their piston rods affixed in a supporting manner to the subplate whereby actuation of the cylinders will provide relative movement between the subplate and base plate and therefor the upper press member and the platen frame.

Abstract: An architecture for a single chip dynamic video random access memory using a single clock to operate the random port to perform refresh, memory address, and to control the internal circuitry for inputting data and addresses and for outputting data as well as modifying information in the memory circuit chip having internal circuitry for performing drawing or replacement rule logical operations on an addressed line of stored video information in the RAM and further having the write masking circuitry for modifying selected portions of the line of stored video information between selected START and STOP bit locations within the like.

Abstract: An apparatus for processing glass sheets includes a furnace and a bending station traversed by a conveyor for carrying the glass sheets. A plurality of heaters mounted in the furnace each heat associated areas of the glass sheets in accordance with setpoint temperature signals representing desired values of temperatures for heating associated areas of the glass sheets. One or more parameters of the glass sheets, such as thickness and color, are sensed and the setpoint signal values are changed accordingly. The parameter values are also utilized to change the spacing between the upper and lower mold members in the bending station to adjust the bending pressure applied to the glass sheets. Furthermore, the parameters are utilized to change the speed of the conveyor sections in order to vary the time that the glass sheets are in the furnace and thus the amount of heat imparted to the glass sheets.

Abstract: A manufacturing line for tempering glass sheets includes a furnace, an oven, a bending station, and a chilling section positioned in order along a generally horizontally extending conveyor for the glass sheets. The oven extends between the furnace and the bending station to maintain the glass sheets at a predetermined temperature. The oven has sidewalls formed of a plurality of brushes and is selectively extensible along the path of travel of the glass sheets. The oven includes controlled heating devices. The chilling section includes a plurality of tubes positioned above and below the path of travel of the glass sheets and connected to a source of air under pressure. The tubes are arranged in rows generally perpendicular to the path of travel and columns generally parallel to the path of travel in order to cause the glass sheets to meet predetermined fragmentation specifications.

Abstract: A continuous, chemical vapor deposition method for producing a coated glass article is disclosed. A glass substrate is advanced continuously, while hot, past first and second treating stations. A non-oxidizing atmosphere is maintained in the vicinity of the first treating station, while an oxidizing atmosphere is maintained in the vicinity of the second station. A non-oxidizing gas which contains a silane, e.g., SiH.sub.4, is directed from the first treating station against a surface of the glass to form a silicon coating on that surface. An oxidizing gas which includes a metal compound in the vapor phase is directed from the second station against the silicon-coated surface of the article.

Abstract: The pixel contents of a frame buffer scan line segment are moved from a source location to a destination location by reading fields of the source segment into a source data shift register and fields of the destination segment into a destination data shift register. The contents of the shift registers may then be rotated relative to one another to account for different starting locations within source and destination fields. The contents of the two shift registers are then simultaneously and synchronously shifted into an ALU where a replacement rule may be used to create a modified stream of pixels shifted into the emptying portion of the destination data shift register. At the conclusion of the shifting for that field the destination data shift register contains the proper pixels to be written back to the destination location in the frame buffer. Then the process is repeated for any remaining fields in the segment being moved.

Abstract: Producing a radius or curved edge in cutting glass by means of a high pressure abrasive fluid jet. Abrasive particles are aspirated in carefully controlled amounts into a fluid stream which is directed through a nozzle tube having an elongated passageway of small diameter, and the fluid is discharged against and closely adjacent the surface of the glass as a highly collimated jet carrying the abrasive particles. The passageway gradually increases in diameter, or flares outwardly, at the discharge end of the nozzle tube, allowing the collimated stream to diverge within confined limits immediately prior to impinging upon the glass surface. The abrasive particle-containing conical fluid jet cuts through the glass along the path followed by the axis of the nozzle tube, while the glass to either side of the cut is abraded by progressively decreasing amounts toward the lateral extremities of the fluid jet. The glass cut is thus formed with a curved edge on the entrant side of the cut.

Abstract: A system adapted to readily cut intricate interior patterns from, as well as make simple cuts across, glass blanks of various thicknesses at increased speed by means of an ultra-high pressure abrasive fluid jet. A highly collimated fluid stream or jet, into which abrasive particles are aspirated, is directed against the glass from a pressurized source. For initial penetration of the glass within the interior of the blank, the pressurized source is maintained at a first pressure level, so that the glass is initially penetrated without fracturing or undue chipping at the point of penetration and whereby the abrasive fluid stream may be advanced along the desired path relative to the glass at a first speed such as to sever the glass.

Abstract: Cutting strengthened glass by means of a high velocity fluid jet. A suitable fluid is placed under high pressure and directed against the surface of the glass in a highly collimated stream of small diameter at high velocity. Very fine abrasive particles are aspirated into the high velocity stream prior to its impingement upon the glass to serve as a cutting medium for the strengthened glass. The pressure of the fluid is reduced when starting the cut to avoid venting of the glass during initial penetration, and the pressure is then increased for movement of the fluid jet along the desired line of cut. The relationship between fluid pressure, line speed and abrasive grit size is carefully controlled to produce a smooth cut free from vents and chips so as to avoid failure of the strengthened unit.

Abstract: A continuous, chemical vapor deposition method for producing a coated glass article is disclosed. A glass substrate is advanced continuously, while hot, past first and second treating stations. A non-oxidizing atmosphere is maintained in the vicinity of the first treating station, while an oxidizing atmosphere is maintained in the vicinity of the second station. A non-oxidizing gas which contains a silane, e.g., SiH.sub.4, is directed from the first treating station against a surface of the glass to form a silicon coating on that surface. An oxidizing gas which includes a metal compound in the vapor phase is directed from the second station against the silicon-coated surface of the article.

Abstract: A support apparatus for supporting a workpiece in a high velocity fluid jet cutting operation. The apparatus has particular utility in the Abrasive cutting of frangible sheet material, such as glass, and especially in the cutting of a predetermined pattern from the sheet thereof. The support apparatus comprises a pair of independent support members that cooperate to provide uniform support to the entire area of the sheet during cutting. A first support member, comprising a plate which is relatively large with respect to the sheet, includes a central opening therein conforming to and slightly larger than the pattern being cut. The plate member provides support to the peripheral portion of the sheet while the central portion thereof is supported by a second support member positioned within the opening.

Abstract: A position control system is described for the control of cursor movement on a video display terminal or the like. The control system includes a wireless movable steering means which emits acoustic signals, tracking means adapted to receive the acoustic signals and determine the position of the steering means by hyperbolic triangulation, and communication means for communicating the position (either absolute position or relative movement) of the steering means to the video display terminal.

Abstract: An architecture for a dynamic video random access memory on a single integrated circuit chip having internal circuitry for performing drawing or replacement rule logical operations on an addressed line of stored video information in the RAM and further having the write masking circuitry for modifying selected portions of the line of stored video information between selected START and STOP bit locations within the line.

Abstract: An architecture for a single chip dynamic video random access memory using a single clock to operate the random port to perform refresh, memory address, and to control the internal circuitry for inputting data and addresses and for outputting data as well as modifying information in the memory circuit chip having internal circuitry for performing drawing or replacement rule logical operations on an addressed line of stored video information In the RAM and further having the write masking circuitry for modifying selected portions of the line of stored video Information between selected START and STOP bit locations within the like.