baber/WOPTO huggingface dataset:
Patent GB-1404100-A (GB)
Title: Microwave transistor package having low parasitic inductance and capacitance
IPC: H01L23/12
Filed: 1973-10-19
Abstract: 1404100 Semi-conductor devices MOTOROLA Inc 19 Oct 1973 [3 Nov 1972] 48791/73 Heading H1K A low parasitic inductance and capacitance microwave transistor package 10 (Fig. 1) comprises a metal, e.g. silver header 14 from which rectangular bonding rails 22, 24 extend. An overlying ceramic, e.g. alumina insulator 18 attached, e.g. brazed thereto has a rectangular aperture 20 accommodating the rails, and a thermal conducting ceramic, e.g. berylliainsulator 26 is brazed to the header between the rails and given an exposed metal film 26 to which a transistor die 30 is bonded. Metal regions 32, 34 are deposited on insulator 18 on opposed sides of the aperture 20, to which laterally extending metal leads 36, 38 are formed. The header may be attached to a base 16 of different metal, e.g. copper drilled for fixing studs, or the base may be omitted; while the bonding rails may be carried from the header. Dual separate alumina insulators may be positioned adjacent the respective bonding rails. Plural parallel base connecting wires 42 are bonded between the base of the transistor 30 and the base lead 38, while other plural parallel wires 44 of minimum length are bonded between rails 22, 24 and the emitter of the transistor, and plural parallel collector connecting wires 40 are bonded to collector lead 36 and the collector bonding 28. A glass sealing ring 46 (Fig. 2) is fused to metal regions 32, 34; to leads 36, 38 and to insulator 18 while a second glass sealing ring 48 is fused to metal ring 50, to leads 36, 38 and to the lower glass ring 46. A metal lid is welded to metal ring 50. For common base utilization the base instead of the emitter of transistor 30 is bonded to rails 22, 24. Bonding of connecting wires may be stitch bonding in which the wire is consecutively bonded at three or more distinct points, and emitter bonding wires 44 (Fig. 1) are stitch bonded to form a dipole. The wire bonds between the leads and the simple electrode bonding pads of the transistor are proportional and positioned to give balanced feed with uniform microwave impedance from each terminal to all points of the corresponding transistor electrode. The microwave package 10 may also accommodate a FET wherein the bonding rails provide the ground connection.
Patent GB-1435215-A (GB)
Title: Hydraulic semi-rotary servo-actuator
IPC: F15B9/14
Filed: 1973-10-19
Abstract: 1435215 Semi-rotary hydraulic actuators MITSUBISHI KINZOKU KK 19 Oct 1973 [21 Oct 1972] 48825/73 Heading G3P An hydraulic semi-rotary actuator comprises a housing 1 in which is rotatably mounted an output shaft 2 integrally formed with a rotor 7 having vanes 7A, 7B which together with abutments 6A, 6B of the housing define working chambers 30-33 inclusive, an input shaft 3 rotatably and coaxially located within an axial bore 12 formed in the output shaft 2 and a valve 50 which closes prior to a valve 8 to prevent the vanes contacting the abutments 6A, 6B. Valve 8 is formed by a pair of arcuate grooves 9A, 9B which are in the surface of the bore 12 and respectively communicate with pairs of working chambers 30, 32 and 31, 33 and co-operating grooves 11A, 11B in the surface of the input shaft 3 which are connected to axial ducts 14, 13 respectively. The valve 50 comprises grooves 19, 20 which are located in the outer surface of the output shaft 2 so as to communicate with a fluid supply bore 15 and discharge bore 16 and which are connected respectively to radial bores 21, 22 in the output shaft 2 and co-operating grooves 23, 24 in the surface of the input shaft 3 and in which ducts 13 and 14 terminate.
Patent GB-1155590-A (GB)
Title: Improvements in or relating to Optical-Electronic Semiconductor Systems
IPC: H01L31/16
Filed: 1966-11-03
Abstract: 1,155,590. Electroluminescence. SIEMENS A.G. 3 Nov., 1966 [4 Nov., 1965; 30 Sept., 1966], No. 49316/66. Heading C4S. [Also in Division H1]  An optical-electronic system comprises a semi-conductor light transmitter and a semiconductor light receiver cemented together via an optical link of high resistance semi-conductor material with a refractive index lying within 20% of the refractive indices of the transmitter and receiver. Fig. 4 shows a gallium arsenide photo emissive diode with electrodes E 2 E 1  to N region N A  and P region P A  respectively the latter being formed by alloying a Zn-Sn pellet to the N-type body. The optical link L consists of chromium doped (10<SP>16</SP> atoms per c.c.) semi-insulating gallium arsenide (10<SP>8</SP> ohm cms.) cemented by a 1 Á thick low melting point glass layer K to a silicon photo sensitive diode B with electrodes E 3  and E 4  to the P and N regions. The glass layer may consist of arsenic selenide or arsenic sulphide glass to give a high refractive index or alternatively organic adhesives may be used. The band gap of the photo-emissive diode may be reduced by adding In 56, InAs, Ga 56 or InP and the band gap of the optical link material may be increased by adding AlP, AlAs, GaP or AlSb, and this layer may be produced by epitaxial deposition on the photo emissive body N A .
Patent GB-1273635-A (GB)
Title: Rotatable brushes
Inventor: SCOTT JOHN
IPC: B63B59/10
Filed: 1969-07-21
Abstract: 1,273,635. Removing incrustation from ship's hulls. ESSO RESEARCH & ENG. CO. 3 July, 1970 [21 July, 1969; 8 Oct., 1969], Nos. 36463/69 and 49501/69. Heading B7M. [Also in Division A4] In an apparatus for removing barnacles from ships hulls each brush comprises a shaft 161 to which is attached a metal disc 172 having secured thereto a circular, flexible, synthetic, rubber diaphragm 171 in the periphery of which is a metal ring 173 to which stainless steel or polypropylene bristles 160 are attached. When the brush is pressed against the surface to be cleaned the bristles are deflected (as shown in broken lines) so that in operation they are inclined at an angle of between 30 and 60 degrees to the surface and their tips perform a slicing and scything action. Three or four holes 180 may be made in the diaphragm said holes being disposed symmetrically about the shaft 161 and permitting water to flow from the hub through the bristles. The brush may be used in conjunction with the apparatus of U.K. Specification 1,203,836.
Patent GB-1364614-A (GB)
Title: Composite briquettes containing carbon and iron and method of producing them
Inventor: JOSEPH R T
IPC: C21B13/00
Filed: 1972-10-27
Abstract: 1364614 Producing iron FMC CORP 27 Oct 1972 [1 Nov 1971] 49750/72 Heading C7D  A method of producing carbonaceous ironbearing bricquettes comprises  (a) Preparing a reactive calcinate by heating coal particles at from 250 F to just below temperatures at which substantial amounts of tar-forming vapours are evolved, in the presence of oxygen.  (b) Shock-heating to tar producing temperatures to remove the tar-forming vapours. (c) Heating the resultant char to a higher temperature below 1800F to reduce volatiles to below 5% while retaining 1% at least of hydrogen in the material. (d) Mixing and bricquetting the calcinate with a bitumous binder and iron bearing particulate material. (e) Curving the bricquettes by heating for 80 to 180 minutes in a gas containing at least 5% oxygen to produce a temperature of 450 to 575 F in the interior of the bricquettes. (f) Further heating the bricquettes in the absence of oxygen to a temperature of between 1600 and 1800F for 10 to 180 minutes to simultaneously coke the bricquettes and reduce the iron bearing particulate material to at least 90% metallic iron.
Patent GB-1261510-A (GB)
Title: Improvements relating to paint storage tanks
IPC: B05C11/11
Filed: 1970-10-20
Abstract: 1,261,510. Cleaning tanks. VALSPAR CORP. Oct.20, 1970 [Dec.29, 1969], No.49819/70. Heading A4F. A method of maintaining the interior surface of the side wall of an enclosed paint tank substantially free of paint residue above the paint level comprises vaporizing a liquid thinner for the paint and conducting it into the head space of the tank, and maintaining the side wall surrounding the head space of the tank at a temperature such that the thinner will condense on the inner surface of the side wall and rinse it. If the tank contains latex paint the thinner may be water. If the thinner is inflammable there is also fed into the head space of the paint tank a gas which does not support combustion, e. g. carbon dioxide. Apparatus is described and illustrated comprising two paint tanks connected to an electrically heated vaporizer for the paint thinner.
Patent GB-1120259-A (GB)
Title: Improvements in and relating to flame resistant cellular plastics
IPC: C08J9/40
Filed: 1965-11-24
Abstract: A resilient cellular plastics material is impregnated with a liquid composition comprising a paraffin chloride and trichlorethylene at a temperature of 60 DEG C and the trichlorethylene evaporated.  The composition may also contain antimony trioxide.  Impregnation may be effected in vacuo.  The material may be dried and degassed before impregnation.  The plastics material may be of natural or synthetic rubber.
Patent GB-1165713-A (GB)
Title: Improvements in and relating to Vehicle Seats
Inventor: LOWE CHARLES BERTIE
IPC: F16F1/16
Filed: 1965-11-24
Abstract: 1,165,713. Resiliently mounted seats. VOP BOSTROM (U.K.) Ltd. 22 Nov., 1966 [24 Nov., 1965], No. 49920/65. Heading A4U. [Also in Division F2] A vehicle seat comprises a seat part 10 supported for upward and downward movement relative to a base part 14 and is biased upwardly by a torsion bar 21 having a torsion-varying member movable longitudinally of the bar to vary the length of the effective part of the bar and simultaneously to vary the twist per unit length of the said effective part of the bar in response to said movement. The torsion bar 21, made of three laminae bonded together and given an initial twist e.g. of 24 degrees, is anchored at one end in a fixed tube 20 and at the other end to a relatively rotatably mounted tube 18 which has fixed thereto a seat support arm 11 the torsion of the bar 21 being variable by means of a block 25 which has a diametral rectangular opening 25a through which the rectangular-section bar 21 extends, a flat surface 25b which is parallel to the opening 25a and which is adapted to slide axially along the co-operating surface of a block 26 fixed, e.g. by welding, to the tube 18, and which is axially movable by means of a lead screw 27. The latter, which engages in a threaded bore in the block 25, has a flange 27a which, with spacing washers 29, is located between an end plate 22, which secures the adjacent end of the bar 21 to the outer end of the tube 18, and an end cap 28 which is secured by screws to the tube 18. The torsion bar assembly is mounted in the spaced side arms 15, 16 of a channel-shaped support column 13, Fig. 1, for a seat 10, the tube 18 being mounted for rotation in a bearing 19 in the arm 16 and one in the adjacent end of the tube 20 which has its other end crimped on to the corresponding end of the torsion bar 21. The outer end of the lead screw 27 has a cup-shaped regulating handle 30.
Patent GB-1191060-A (GB)
Title: Synergistic Herbicidal Composition
IPC: A01N41/10
Filed: 1968-10-22
Abstract: 1,191,060. Synergistic herbicidal compositions. UNIROYAL Inc. 22 Oct., 1968 [7 Nov., 1967] No. 49958/68. Heading A5E. A herbicidal composition comprises an admixture of an N-aryl phthalamic acid or an ester or salt thereof, and a 4-(methylsulfonyl)- 2, 6-dinitro-N,N-disubstituted aniline, e.g. a mixture of wherein R is H or alkyl (or an ester or salt thereof) and wherein R' and R" are alkyl or alkenyl of at least two carbon atoms.
Patent GB-1218268-A (GB)
Title: Rigid article
IPC: C08L61/10
Filed: 1968-10-23
Abstract: 1,218,268. Laminates. SOC. RHODIACETA. 23 Oct., 1968 [25 Oct., 1967; 3 Sept., 1968], No. 50299/68. Heading B5N. [Also in Division D2] A method of making a rigid and compact laminate comprises mixing a thermosetting resin e.g. a phenolic resin with solid particles having a maximum dimension of from 0À1 to 10 mm., said particles having no definite shape and consisting of felted unoriented fibrils of a thermoplastic synthetic polymer having an ultimate tensile strength of at least 0À9 gm. per denier, forming the resultant mass into a plurality of sheets, stacking the sheets and hot pressing the resultant laminate. In a preferred embodiment, the sheets in the assembly are alternated with a plurality of webs of a textile material impregnated with at least 50% by weight of a thermosetting resin. Specified polymers are polyamides e.g. polyhexamethylene adipamide, polyesters e.g. polyethylene terephthalate, vinyl polymers and acrylonitrile polymers. The particles may be admixed with fibres e.g. of staple viscose or glass. The textile material may be woven, knitted or non- woven and is preferably formed from crimped synthetic filaments e.g. of polyethylene terephthalate or polyhexamethylene adipamide. The products of the invention may be used as substitutes for wood.
Patent GB-1318800-A (GB)
Title: Diesel engines
IPC: F02B37/04
Filed: 1970-10-22
Abstract: 1318800 Charging I. C. engines SOC ANON DE VEHICULES INDUSTRIELS ET EQUIPEMENTS MECANIQUES 22 Oct 1970 [31 Oct 1969] 50303/70 Heading F1B A diesel engine has an exhaust driven turbine 3 driving a compressor 4 which supplies air to a compressor 10 driven from the engine crankshaft 13 at a speed ratio which increases as the pressure delivered by compressor 4 diminishes. A heat exchanger 6 between the compressors allows heat exchange with the engine cooling liquid, and heat and sound insulation material is provided where shown by hatching. Variation of the speed ratio is obtained by an expansible pulley 12 with displaceable flanges, the position of the pulley being varied according to the pressure in cylinder 16. A branch circuit recycles liquid fuel from the inlet manifold to a point upstream of compressor 10 and a partition (20) Fig. 3 (not shown) in the manifold assists in separating the liquid fuel.
Patent GB-1157160-A (GB)
Title: Hydraulic Control Valves
IPC: F15B13/04
Filed: 1967-11-06
Abstract: 1,157,160. Fluid-pressure braking systems; clutch control; valves. U.S. INDUSTRIES, Inc. 6 Nov., 1967 [8 March, 1967], No. 50437/67. Headings F2F, F2L and F2V. [Also in Division F1] A valve 9, Fig. 1, for connecting a pressure line to a single acting hydraulic piston and cylinder device 1, e.g. for brake and/or clutch actuation, and for connecting the latter to a tank line 11 comprises a pair of simultaneously axially movable spool valve members 18, Fig. 4, located in parallel bores within a single housing 12 having a pressure inlet opening 34, a combined motor supply and exhaust opening 35 and an opening 36 connected to tank, and each bore has vertically spaced annular chambers 23, 22, 21 which are connected to the corresponding chambers in the other bore by lateral passages 39, 42, 45 and also connected to the openings 34, 35, 36 whereby the main valve spools 18 are connected in parallel so that failure, e.g. sticking of one or other members 18, would result in the pressure inlet opening 34 being automatically connected to the tank opening 36 thereby preventing an unsafe pressure rise in the motor. Each spool member 18 is controlled by a solenoid operated pilot valve 48, 49, Fig. 3, having a passage 50a which when the associated solenoid is de-energized and the spool members 18 are positioned as shown in Fig. 4, connect a port 50 which is constantly open to supply pressure with a port 51 connected to an upper end main valve chamber 33 through passages 52, 53, an annular chamber 54 and a port 55, whilst a lower end chamber 26 is then connected to the tank outlet 36 through a port 60, an annular chamber 59, a vertical passage 57, ports 56, 61 which are connected by the pilot valve, a vertical passage 62, and an inclined passage 63 leading to the return chamber 21. On energizing both pilot valves port 50 becomes connected to port 56 thereby supplying pressure fluid down passage 57 to the lower end chamber 26, whilst port 51 becomes connected to port 61 thereby connecting the upper end chamber 33 to the return outlet 36 whereupon both spools 18 are lifted to the operative position shown in Fig. 7. Assuming both solenoid valves to be de-energized but that the right hand valve member 18 sticks in the operative, Fig. 7 position, inlet pressure fluid will continue to gain access to the motor supply opening 35 but since the left hand valve member 18 is in the inoperative position shown in Fig. 4 the inlet pressure fluid is diverted through the return outlet 36 back to tank. The vertical dimensions of annular spool-engaging ribs 15, 16 projecting from the wall of each valve bore are such that the valve spool when being moved to the operative position cuts off connection between openings 35, 36 before connecting the pressure inlet opening 34 to the motor supply opening 35 thereby preventing loss of pressure fluid.
Patent GB-981025-A (GB)
Title: Improvements in or relating to the kilning of cement
Inventor: BADE ERICH
IPC: C04B7/60
Filed: 1963-12-23
Abstract: <PICT:0981025/C1/1> The alkalies are removed from cement raw material prior to kilning by passing the exhaust gases from rotary kiln 1 one or more times through a bed of raw material on travelling grate preheater 4, removing the dusts from the gases after the or each passage through the bed by means of separators 6 and 10, mixing the dusts with water in tank 13 to form a suspension, allowing the suspension to settle in tank 17 to form a strong alkali brine and an alkali poor sludge which is pumped to a granulating pan 21 where it is used to granulate fresh material to be kilned.  The brine may be passed from tank 17 to a tank 26 containing a stirrer with a hollow shaft 27 through which kiln exhaust gases are passed to neutralize the brine which is then discharged via 30.
Patent GB-1128245-A (GB)
Title: Sterilising method and apparatus therefor
IPC: C09K3/30
Filed: 1966-11-14
Abstract: 1,128,245. Sterilizing. K. G. E. ROSDAHL; C. G. D. ENGSTROM and P. HERZOG. 14 Nov., 1966 [18 Nov., 1965], No. 50932/66. Heading A5G. [Also in Division B2] Apparatus for sterilizing articles comprises an ultrasonic atomizer wherein a liquid disinfectant, e.g. aqueous ethanol or a solution of a disinfectant, is atomized by means of ultrasonic vibrations and dispersed thereby in a carrier gas to form an aerosol which is contacted with the articles to be sterilized. Optionally, the apparatus may comprise means whereby the carrier gas (which may be heated) may be passed over the articles after treatment to facilitate drying. A suitable atomizer is shown in Fig. 3, wherein liquid disinfectant from the reservoir bottle 80 is introduced at a controlled rate on to the ultra sonic vibrator plate 73 in the chamber 68 whilst a carrier gas, e.g. air or nitrogen, is passed into the chamber via conduit 69 and the aerosol leaves via conduit 70. The carrier gas may be supplied by a high pressure source or a blower and the apparatus may incorporate a heater which allows heated gas to be passed through the apparatus when the liquid supply is turned off, to dry the disinfected articles.
Patent GB-1254037-A (GB)
Title: Ultrasonic transducer employing suspended piezoelectric plate
IPC: H03H9/05
Filed: 1969-10-16
Abstract: 1,254,037. Piezoelectric transducers; electromechanical filters. EUPHONICS CORP. 16 Oct., 1969 [30 Oct., 1968], No. 50932/69. Headings H3U and H4J. [Also in Division H1] An ultrasonic transducer comprises a flat piezoelectric bender 50 having electrodes 56, 58, 60. Stiff wires 61, 62, 63, 64 are connected near the edges of the bender 50 and support it without tension a fixed distance from a cup-shaped base-plate 22 (Fig. 3). In use the bender 50 is actuated by ultrasonic compression waves or by electrical oscillations at a fixed frequency such that the wires 61, 62, 63, 64 are located at nodal points of vibration of the bender 50 and so that a central portion of the bender 50 is free to vibrate. The bender 50 is spaced from the baseplate 22 so that the compressional waves are reflected to the bender 50 for reinforcing its vibrations. Likewise a disc 29 is so spaced from the bender 50 to maximize and focus the compressional waves impinging on the bender 50. The bender 50 comprises two wafers 52, 54. Wires 61, 62, 64 are current conductors and are soldered to electrodes 58, 60, 56 respectively. Plastics cement covers each joint for reinforcement and effectively prevents vibration of the wires. Wire 63 is likewise soldered and covered. A notch 76 in piezoelectric wafer 54 exposes the electrode 56 to permit soldering of the wire 64. Four posts 27 integral with the base-plate 22 are spaced apart by 90 degrees and have apertured pegs 28. The wires 61, 62, 63, 64 pass through the pegs 28 and are attached thereto by cement 88. The wires 61, 62, 64 continue to terminals 86 to which they are soldered. The disc 29 is integral with four spokes 31, 32, 39, 34 of a circular member 30, Fig. 8. The pegs 28 engage in apertures 40 in the spokes. The transducer is encased in a cylindrical casing 12 having an open top covered by a mesh screen 16. The piezoelectric material is lead zirconate or lead titanate. The transducer may be a compressional wave transmitter or receiver in which case wires 61, 62 are current conductors, or in an oscillator or filter circuit in which case wires 61, 62, 64 are current conductors.
Patent GB-1155646-A (GB)
Title: Fuse Connector
Inventor: SEAGRAVE JAMES
IPC: H01R13/68
Filed: 1966-11-15
Abstract: 1,155,646. Fuses; fuse holders. AMP Inc. 3 Oct., 1967 [15 Nov., 1966], No. 51030/66. Headings H2E and H2G. A fuse connector comprises a block 1 of insulating material formed with a cavity 2 for receiving a cartridge fuse, a pair of contacts 4 mounted in the block and having portions 6 disposed in the cavity for receiving respective ends of the cartridge fuse, the block being formed with a slot 9 for slidably receiving a strip carrying alternative fuse elements (11) (Fig. 2, not shown), raised portions (10) of the contacts being arranged to frictionally engage terminal portions of the strip fuse elements when inserted in the slot. A further fuse element 7 associated with each cavity may be located in contact with turned out portions of the contacts 6. Several cavities provided side-by-side in the block 1 are linked by a slot 9 and printed fuse elements (12, 13) on the carrier strip may be provided such that on failure of one fuse element (12) the strip can be repositioned to bring the other element (13) into the operative position. Fuse elements may also be formed on the reverse side of the carrier strip.
Patent GB-511040-A (GB)
Abstract: 511,040. Melting-furnaces. STEIN & ATKINSON, Ltd., and BOOTH, T. A. Feb. 8, 1938, No. 3945. [Class 51 (ii)] A furnace for melting aluminium comprises a hearth or receptacle 7 with immersed heat radiating tubes 2 e.g. of the kind described in Specifications 452,204, 469,114, 487,764 and 488,101 each tube being fired at one end by a burner, such e.g. as the burner described in Specification 452,204, which produces a long flame by delaying the mixing of the gas and air, and the products of combustion being exhausted at the other end of the tube after traversing it once only. The lower tubes are of " hairpin " form, and the upper one is a triple tube with the burner delivering into the middle limb and exhausters at the en d of the outer limbs. The tubes may have varying cross sections at different parts of their lengths, and they are sealed to the furnace wall in a bushing 5 of rammed refractory material. The furnace shown is tiltably mounted on rollers 9.