baber/WOPTO huggingface dataset:
Patent GB-1298979-A (GB)
Title: Semiconductor display device
IPC: H01L27/00
Filed: 1970-09-22
Abstract: 1298979 Electroluminescence MITSUBISHI DENKI KK 22 Sept 1970 [22 Sept 1969] 45170/70 Heading C4S [Also in Division H1] Display elements 10a ... of a semi-conductor display device are situated on a semi-conductor substrate 1, 2 which contains respective circuit means 20a ... associated with each display element. The display elements 10a ... , preferably comprising PN junction electroluminescent diodes, may all be formed in a common display body 50 epitaxially deposited on the substrate 1, 2 or may be situated in separate bodies formed by selectively etching a layer epitaxially deposited on the substrate 1, 2. The display diodes may be made of a III-V compound such as GaAs or Al x Ga 1-x As or a II-VI compound, while the substrate 1, 2, which itself comprises a P-type epitaxial layer 2 on a P+ body 1, may be made of Si, Ge or a III-V compound. The circuit means 20a includes, in the embodiment shown, a planar diffused transistor 5a/4a/32a connected to the corresponding display diode 10a by an Au wire 15d, the collector region 32a being connected, via a diffused resistive region, to a conductive track 7 common to all the circuit means and connected to a potential source. A selected display element such as 10a is caused to luminesce by applying a signal to an input terminal connected to the base region 4a of the corresponding circuit means.
Patent GB-1247177-A (GB)
Title: Improvements in and relating to tubular heat-exchangers
IPC: F28F13/06
Filed: 1968-09-24
Abstract: 1,247,177. Tubular heat exchangers. DEGGENDORFER WERFT & EISENBAU, G.m.b.H. 24 Sept., 1968 [26 Sept., 1967], No. 45263/68. Heading F4S. A heat exchanger for heating or cooling a fluid circulated through reaction apparatus 14, comprises a hollow bundle of tubes 1 extending between a header 8 and an annular header 3 which encircles a fan impeller 6 for circulating the said fluid over the tubes, a deflector 9 being disposed within the tube bundle downstream of the impeller to direct the circulated fluid over the tubes. The deflector 9 extends alongside the tubes for the major portion of their length and is arranged to act as an additional heat exchange surface. As shown the deflector 9 is hollow, is included in the flow path of the tube-side fluid, and is traversed longitudinally by an open-ended tube 11 through which flows a portion of the circulated fluid. In a modification, Figs. 3 and 5 (not shown), a separate fluid flows inside the deflector. In Fig. 5, the deflector comprises a bank of closed-end return tubes (27, 28). In another form (Fig. 4) the deflector (24) contains a burner (26) for heating the circulated fluid e.g. when the reaction is endothermic. In another form (Fig. 6), the deflector consists of a central tube (32) encircled by a ring of tubes (31), replaceable electric elements being fitted in these tubes.
Patent GB-1150259-A (GB)
Title: Line Switching Apparatus.
IPC: H04L12/00
Filed: 1967-10-05
Abstract: 1,150,259. Data transmission systems. INTERNATIONAL STANDARD ELECTRIC CORP. 5 Oct., 1967 [25 Oct., 1966], No. 45393/67. Heading H4P. A circuit for use with a plurality of data lines, each having a corresponding service request line, comprises means providing the address of the line currently being serviced and the address of the next line, in cyclic sequence of lines, which is requesting service. The circuit includes a gating circuit, described below, which determines the address of the line next to be serviced and passes it to a code converter which feeds an address register. The register delivers the address of the line now being serviced to the output of the circuit and to a second code converter which feeds the gating arrangement, the latter also being fed by the service request lines. The gating arrangement comprises a plurality of stages, one for each service request line S, each stage having gates 21, 22, 23. Fig. 3 shows j stages which form one of a number of similar groups connected in series, gate 25 of the last group feeding gate 21 of the first. Suppose the address of the line being serviced, after conversion to one out of p code, is A i-1  and suppose that request line S i+j  is on, in addition to S i-1 . The signal on A i-1  will pass via gates 21, 23 of each stage in succession, gates 23 being enabled by the request complement lines S, until the gate 23 connected to S #i+j  (which may be in another group) is reached. This gate is inhibited but the gate 22 connected to S i+j  is enabled so a signal appears on line B i+j , this representing in 1/p code the address of the line next to be serviced. The signal passes to the first converter which passes the address to the register. The register can therefore supply this address immediately servicing of the present line ceases. Each group is provided with a by-pass gate 24 which is enabled if there is no stage in the group associated with an "on" request line S or with the line now being serviced, as determined by gate 27. Under such conditions the signal C i-1  from one stage by-passes the next stage and feeds the subsequent stage, so hastening the instant at which the address B appears after change of an address A.
Patent GB-1105257-A (GB)
Title: Material forming apparatus utilizing hydraulic pressure
IPC: B21D26/02
Filed: 1965-10-27
Abstract: 1,105,257. Hydraulic apparatus. TOKYO SHARYO SEIZO KABUSHIKI KAISHA. Oct. 27, 1965 [Dec. 7, 1964; Jan. 14, 1965; March 2, 1965], No.45576/65. Heading F1P. [Also in Division B3] An apparatus for producing an impulsive hydraulic pressure in a liquid filled chamber 22 comprises a hammer 3 arranged to be propelled along a cylinder 1 by compressed air into direct contact with liquid in the chamber 22 or into striking engagement with the end of a plunger 21 having the other end thereof protruding into the chamber 22. The impulsive hydraulic pressure generated in the chamber 22 is utilized to expand a material 35 into the shape of a die 30 (see Division B3). To enable the forming operation to be accomplished in steps the chamber 22 may be supplied with additional liquid through a non-return valve connected to a pump. The hammer 3 is normally locked in its retracted position by a pin 5 urged by a spring 6 into engagement with a groove 4 in the hammer 3. To operate the hammer a valve 17 is opened manually, mechanically, or electromagnetically to allow compressed air supplied from an inlet 11 to each end of a spool valve 10 to escape from the lower end thereof. Hence the valve 10 moves down and air passes through an automatic cut-off valve 9 to cause the hammer to accelerate along the cylinder 1 and in the arrangement shown, strike the plunger 21. When the valve 17 is released compressed air from the inlet 11 passes through a restriction 18 to return the valve spool 10 to its original position. The hammer is then returned by compressed air from a tank 15 admitted to the cylinder 1 through a pipe 14. In the alternative arrangement, Figs. 3-7 (not shown) the hammer 3 is arranged to move vertically downwards into direct contact with liquid in a bowl-shaped container having a central bore in communication with the chamber 22.
Patent GB-1410841-A (GB)
Title: Production of refractory material
IPC: C04B35/591
Filed: 1972-06-30
Abstract: 1410841 Foamed refractory material ADVANCED MATERIALS ENG Ltd 1 Oct 1973 [30 June 1972] 45782/73 Heading C1A Foamed refractory material is produced by mixing together precursors which react to give a foamable resin, a blowing agent for the resin and silicon, to form a green foam, debonding the green foam and heating the foam in an atmosphere of or containing nitrogen to convert the silicon to silicon nitride. The preferred precursors are such as to give a polyurethane or phenolic resin and may additionally contain bubble control agents (e.g. silicones) and a polymerization catalyst. The mixing of the silicon with the other ingredients is facilitated by incorporating a liquid diluent, e.g. methyl ethyl ketone, acetone, xylene or chlorinated hydrocarbon. The debonding step is preferably carried out by heating in air (e.g. at 350‹ C. for 24 hours). An electrically conducting refractory foam of silicon nitride is prepared by incorporating carbon in addition to silicon in the green foam mix and heating the green foam under conditions such that a material comprising silicon nitride containing an interconnecting network of silicon carbide is formed.
Patent GB-1516208-A (GB)
Title: Decaffeination process
IPC: A23F5/20
Filed: 1975-11-07
Abstract: 1516208 Decaffeination processes SOC DES PRODUITS NESTLE SA 7 Nov 1975 [27 Nov 1974 18 Aug 1975] 46175/75 Heading A2B Vegetable materials, especially tea and coffee, are decaffeinated by contacting the materials, themselves or aqueous extracts thereof, with a liquid, water-immiscible fatty material. When an aqueous extract of tea or roast coffee beans is treated, volatiles may be removed before contacting with the fatty material and recombined with the extract after removal of caffeine. When an extract of green coffee beans is treated, it may be recycled for further contact with the beans after contact with the fatty material. The aqueous extract may have a solids content of 2-60% and the contacting temperature may be 0-50C. When coffee beans are contacted directly they may have a moisture content of 20-60% and contacting is at 30-150C. The fatty material should contain an equilibrium moisture content, e.g. 0.9-1.2%. Contacting may be performed in a multistage counter-current process. The fatty material may be sunflower, soy bean, corn, peanut or coffee oil, triolein or lard.
Patent GB-1242218-A (GB)
Title: Improvements in or relating to proximity switches
Inventor: HILL MICHAEL LEO GEORGE
IPC: B61L1/16
Filed: 1967-10-10
Abstract: 1,242,218. Wheel detector. HAWKER SIDDELEY DYNAMICS Ltd. 8 Oct., 1968 [10 Oct., 1967], No. 46250/67. Heading B7N. A rail vehicle wheel detector comprises a permanent magnet 11, a first polepiece 12 which secures the magnet to rail web 13, a second polepiece 15 which with member 17 is tapered 26, 27 to form a gap 18 in which a magnetic flux dependent resistance or Hall voltage plate 23 is inserted and an extension 21 of the member 17 which lies immediately below the position occupied by a passing wheel flange. The gap 18 is filled with a plastics moulding compound 24. In a further arrangement, Figs. 4 and 5 (not shown), a single magnet is used with three detector elements spaced along the rail.
Patent GB-463339-A (GB)
IPC: A61B7/02
Abstract: 463,339. Acoustic diagnosing-apparatus. ROOSEN, R. Dec. 14, 1935, No. 34774. Convention date, Jan. 8. [Class 81 (ii)] An apparatus for generating acoustic waves within the abdominal and pelvic cavities for diagnostic purposes comprises an electric sound producer 1 inclosed in a casing 2 which is connected to and communicates with a tube 3 adapted to be inserted into the rectum. Preferably, the casing is maintained in a vacuum space 4 by a second casing 5 which surrounds it. The Specification as open to inspection under Sect. 91 comprises also a modification consisting of a casing which contains an electric sound producer and which is adapted to be inserted into the rectum. This subject-matter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 19583/91, 11341/02, and 8210/08, [all in Class 81].
Patent GB-968286-A (GB)
Title: Improvements in or relating to garment covers
Inventor: PRESTON ARTHUR
IPC: A47G25/54
Filed: 1961-12-28
Abstract: 968,286. Bags. BIBBY & BARON Ltd. Dec. 20, 1962 [Dec. 28, 1961], No. 46385/61. Heading B8K. The hole 5 in a garment bag 4 is adjacent the fold and has rounded ends 6 to obviate tearing.
Patent GB-950996-A (GB)
Title: Devices for dispensing articles
Inventor: TYTE ERNEST HENRY
IPC: A47F1/08
Filed: 1961-12-28
Abstract: 950,996. Dispensing articles. GILLETTE INDUSTRIES Ltd. Dec. 18, 1962 [Dec. 28, 1961], No. 46417/61. Heading A4T. An article dispenser comprises a stack of packets B dropping in side guide channels 10 towards a retrieval platform 1, in which after leaving the guides the lowest packet contacts the edges 12 of oppositely directed deflectors 11 whereby the packet is twisted about the stack axis to facilitate withdrawal from the rear. Packets for replenishing the magazines 10 are stored in rear compartments 16, 17. A transparent cover 20 is secured to the front of the dispenser.
Patent GB-1437096-A (GB)
Title: Drive arrangement for the rolls of a rolling mill
IPC: B21B37/46
Filed: 1973-10-04
Abstract: 1437096 Automatic control of roll torque DAVY-LOEWY Ltd 4 Oct 1974 [4 Oct 1973] 46496/73 Heading G3R The distribution of torque between the driven rolls 9 of a rolling mill is controlled by a system in which the arc of contact between a workpiece and at least one roll is adjusted in response to a measurement of the torque transmitted by each of the rolls. The torque may be measured by electrical strain gauges on the driving shafts Fig. 2 (not shown) or placed between bearing chocks and supports to respond to lateral deflection (25), Fig. 3 (not shown). The signals are applied to a differential amplifier 16; as shown, the output of this controls a hydraulic valve 19 to adjust the height of a deflector roll 14 at entry to the stand, with position feedback to a second amplifier 17. Alternatively, a similar roll 14 on the exit side may be so controlled,'the whole mill stack may be raised or lowered relative to fixed deflector rolls, or the axis of one of the driven rolls 9 may be displaced horrizontally relative to the other.
Patent GB-1261039-A (GB)
Title: Improvements relating to printed circuit assemblies
Inventor: BOND JAMES
IPC: H05K3/32
Filed: 1968-10-02
Abstract: 1,261,039. Printed circuit assembly. ELLIOTT BROS. (LONDON) Ltd. 26 Sept., 1969 [2 Oct., 1968], No. 46773/68. Heading H1R. In a multilayer printed circuit assembly the copper conductive layers 3, mounted on epoxyglass layers 4, the whole being bounded by further epoxy glass layers 5, 6 project into holes 7, 8 in the assembly, Fig. 7 (not shown), and are bent towards a surface 12 of the assembly where they are interconnected by copper pads 13, 14 with a layer 15 of gold on it. A circuit component, such as an integrated circuit 9, potted in a silicone compound 18 may also be fitted with its leads 10, 11 passing through the holes 7, 8 and connected to the pads 13, 11. An epoxy resin potting compound 17 fills the holes 7, 8, and a layer 16 of lacquer is applied over the pads and the surface 12. Both the substrate 4 and the copper layer 3 of each printed circuit layer 1, 2 are formed by etching after forming the patterns of holes and circuit lines respectively with negative-working photo resist material (20) the substrate being etched first by alternate dips in sulphuric and hydrofluoric acid solutions, and protected with a layer (16) of lacquer when the copper layer is etched with ferric chloride solution, Figs. 2-5 (not shown), the lacquer and photo-resist subsequently being removed to leave the printed circuit layer, Figs. 6, 7 (not shown). To form the assembly, the leads 10, 11, of component 9 are bent in a jig and the component is mounted against the layer 5, see Fig. 8 (not shown). The further layers of circuit boards are mounted with their holes in registration, and a punch and die (26, 28) bends the conductive layers, see Fig. 9 (not shown), and the device is assembled as shown in Fig. 10 registration being obtained by two pins in the jig (22) passing through all layers. The epoxy potting compound 17 is applied via holes in the layer 6 to fill the spaces in the assembly, aided by evacuation of the spaces, and the pressure plate (29) Fig. 10 (not shown). Heating cures the resin, and the device is subsequently ground to the level of layer 6, Fig. 11 (not shown), and the surface 12 is sand-blasted. Electroless copper is applied to the surface 12, and electroplated with a layer (31) of copper and a photo-resist technique leaves bare those areas where pads are required, Fig. 12 (not shown). The latter areas are plated with gold 15, Fig. 13 (not shown) and the copper layer (31) remaining unplated is etched away with ferric chloride, and the layer 16 of lacquer applied. The gold layer may be dispensed with and the pattern of pads etched using a photoresist material, or the thin layer of electroless copper may be masked with photo-resist and exposed to leave the pad areas bare, followed by application of a thicker layer of copper, removal of the photo-resist, and brief etching away of the thin electroless copper layer with little effect on the thicker pad areas.
Patent GB-1276658-A (GB)
Title: Improvements in or relating to means for directing or manoeuvring mineral working or like equipment in relation to a mineral face or terrain to be mined or worked with the aid of such equipment
Inventor: GASKELL JOSEPH
IPC: E21D23/00
Filed: 1968-10-03
Abstract: 1276658 Rock drill GULLICK DOBSON Ltd 12 Sept 1969 [3 Oct 1968] 46880/68 Heading B3C [Also in Divisions B4 and E1] A device comprises two units 10, 11, at least one of which is adapted to carry a mineral working tool, each unit having opposed jacks 20, 20a or 21, 22 for engaging a floor and a roof so as to secure the unit, and the units being pivotally interconnected by rams 12, 13 so that by operation of the jacks and the rams either of the units can be moved relative to the other unit. The jacks 20 ... 22 are formed by hydraulic rams and each ram 12, 13 has connected thereto steering rams such as 14, 17. In a second embodiment, Fig. 5 (not shown), one unit slidably receives a member pivoted to the other unit, the member being extensible by an hydraulic ram.
Patent GB-1066196-A (GB)
Title: Prestressed structures
IPC: E04C5/08
Filed: 1962-12-12
Abstract: 1,066,196. Reinforced concrete. E. R. M. HART. Nov. 15, 1963 [Dec. 12, 1962], No. 46900/62. Heading E1W. A method of prestressing a structure comprises applying a tension force to a pipe of a prestressing unit and preventing it from contracting by a locking means, e.g. a rod 2, of the unit (by deformation of the pipe 1 on to the rod 2 at X-X), placing the prestressing unit in a desired position in the structure, and freeing the rod 2 from the pipe (by cutting) so that the pipe 1 induces a compression stress in the structure. The rod 2 is then removed. The prestressing unit may be cast into concrete, which is allowed to attain the requisite strength before the rod 2 is cut, so that the surrounding concrete is placed under compression. The unit is positioned so that at least one end of it projects outwardly, the end or each end being cut as at Y-Y. At least one gap may be left in the concrete, whereby the pipe 1 may be cut. In Fig. 2 the ends of the pipe are deformed to axially engage the rod 2 and are turned inwardly, and may be belled in doing so. The rod 2 may then include wedges 5 at the ends engaged by the pipe ends. The pipe 1 may have an outer form to grip the concrete upon contraction. It could be axially bent or of a circular form when the rod 2 is in lengths with rounded ends or is replaced by steel balls. Instead of rods 2 tubes may be used, and either may be accompanied by end plugs 3. The rod 2 may be wholly or partly lubricated for easy withdrawal.
Patent GB-1142820-A (GB)
Title: Improvements in face milling cutters
Inventor: ASHLEY JOHN PERCIVAL
IPC: B23C5/20
Filed: 1966-10-20
Abstract: 1,142,820. Milling cutters. CHARLES CHURCHILL Ltd. 15 Sept., 1967 [20 Oct., 1966], No. 46940/66. Headings B3B and B3K. A face milling cutter comprises a cutter head 10 which carries a number of triangular throwaway cutting inserts 11 each insert having six cutting edges formed by the junctions of its triangular end faces with its side faces and having at each corner two facets a, b, c &c., each associated with a particular cutting edge. Each insert is positioned in the cutter head so as to have a positive axial rake and a negative radial rake, the facets provide a clearance angle to the workpiece.
Patent GB-1185478-A (GB)
Title: Winding Drum.
Inventor: UPEX JAMES THOMAS
IPC: E02F3/58
Filed: 1966-10-20
Abstract: 1,185,478. Winding drums. THOMAS SMITH & SONS (RODLEY) Ltd. 19 Oct., 1967 [20 Oct., 1966], No. 46956/66. Heading B8M. A winding drum for the reception of rope or twisted wire used in cranes or excavators is characterized by having between the drum flanges a first substantially cylindrical end zone 10, an opposite substantially cylindrical end zone 12 of greater diameter than the first, and an intermediate zone 14 of varying angle tapering section. The zone 14 preferably consists of two substantially equal widths of different taper, the steeper taper portion lying adjacent the first end zone 10. Examples of angles of taper and widths of zones are given in the Specification.
Patent GB-1410238-A (GB)
Title: Hydraulic dampers assembly
IPC: B60R19/32
Filed: 1972-10-12
Abstract: 1410238 Bumpers GENERAL MOTORS CORP 12 Oct 1972 [5 Nov 1971] 47096/72 Heading B7J [Also in Division F2] A bumper 14 is mounted on a vehicle frame 16 by two shock-absorbers 10, 12. Each shockabsorber comprises a cylinder 20 having mounted within it a cylinder 30 having an apertured end 34 and containing a floating piston 38 urged towards the end by a resilient means (gas) 44, an axial limit stop 46 and a seal 52 between the cylinders, the damper being assembled by putting the floating piston into the inner cylinder and applying the resilient loading, placing a quantity of liquid in the outer cylinder and inserting the inner cylinder therein causing the floating piston to be forced back against the resilient loading. When liquid has filled the space 66 between the cylinder walls (by flowing past a bearing ring 54), the ends 72 of the cylinder 20 are crimped over the stop 46. A ball 60 is welded into the mounting bracket 56 to seal the gas charge at 132 p.s.i. in the cylinder 30. A metering pin 68 is resistance-welded to the end cap 67 of the cylinder 20. The liquid in the space 42 acts to compensate for liquid loss and temperature fluctuations. The gas spring may be replaced by coil spring. Reference has been directed by the Comptroller to Specification 1,336,470.
Patent GB-1518695-A (GB)
Title: Methods of testing electrical components
IPC: G01R31/00
Filed: 1976-11-10
Abstract: 1518695 Testing electrical components POST OFFICE 10 Nov 1976 [14 Nov 1975] 47130/75 Heading G1U An electrical component used at a normal value of an environmental condition (temperature, humidity, voltage) is tested by measuring the times taken for the performance of the component to deteriorate from a first level to a second level at several values of the condition which impose more stress than the normal value, while allowing the performance to recover to the first value between measurements. The method is applied to sample testing of microcircuit operational amplifiers at elevated temperatures and it is shown that these devices can recover at the elevated temperatures, and that the performance at these temperatures enables a faster prediction of incipient failure than the prior art testing at normal temperatures.