baber/WOPTO huggingface dataset:
Patent GB-1378891-A (GB)
Title: Electroplating
IPC: D04B15/88
Filed: 1971-12-03
Abstract: 1378891 Bright zinc electo-plating baths F POPESCU 3 Dec 1971 [3 Dec 1970 11 March 1971] 56218/71 Heading C7B An aqueous electro-plating bath contains a zinc salt, a brightener comprising at least one acetal or ketal of an aromatic aldehyde or ketone with one or more acetylenic alcohols, and a non- ionic or anionic wetting agent, e.g. produced from ethylene oxide. The brightener has the formula:- in which R 1  may be an aryl or heterocyclic radical (e.g. furane) which may be substituted by alkyl, hydroxyl or alkoxy radicals; R2 may be a benzene nucleus, hydrogen atom or alkyl or aryl group which may be substituted as per R 1 ; and R 3  and R 4  are radicles originating from acetylenic alcohols. Various examples are given of suitable aldehydes, ketones and acetylenic alcohols. The bath may also contain a monobasic carboxylic acid or salt, e.g. benzoic, anisic, vanillic, piperonylic, resorcilic, furoic, nicotinic or picolinic acid; unreacted ketone or aldehyde; complexing agent, e.g. ammonium chloride or a polyhydroxycarboxylic compound, and a buffer, e.g. boric acid.
Patent GB-1209787-A (GB)
Title: Improvements in semiconductor device manufacture
Inventor: TIEMANN JEROME JOHNSON
IPC: H01L21/00
Filed: 1967-12-13
Abstract: 1,209,787. Etching. GENERAL ELECTRIC CO. 13 Dec., 1967 [30 Dec., 1966], No. 56700/67. Heading B6J. [Also in Division H1] A method of etching a desired pattern of removed portions in a layer of silicon nitride formed on a semi-conductor body using a predetermined etching solution comprises the steps of providing a "transfer layer" on the silicon nitride layer, the transfer layer having a substantially lower etch rate than the silicon nitride layer in the predetermined etching solution, providing a photoresist layer on the transfer layer, photolithographically producing a pattern of removed regions in the photoresist layer, etching to remove the portions of the transfer layer exposed by the pattern, and etching the portions of the silicon nitride layer exposed by the removal of the portions of the transfer layer using the predetermined etching solution. The semi-conductor body may consist of silicon or gallium arsenide and the transfer layer may comprise Mo, W, Mg, Ni and its Cu alloys, Si, Ge, Se, Te, Bi, Sb, Au, Ag, Pt, Ir or Os. The predetermined etching solution is preferably concentrated HF acid, and suitable etchants for the transfer layer include ferric chloride for nickel, dilute HF acid for magnesium, carbon disulphide for selenium, a ferricyanide etch comprising:- 92 grams K 3 Fe(CN) 6  20 " KOH 300 " H 2 O for molybdenum and tungsten, and "dim etch", comprising:- 2 parts concentrated HF acid 3 parts glacial acetic acid  5 parts nitric acid 0À7 grams/litre of iodine for silicon.
Patent GB-1181447-A (GB)
Title: Improved disk brake.
IPC: F16D55/224
Filed: 1967-12-13
Abstract: 1,181,447. Disc brakes. KELSEY-HAYES CO. 13 Dec., 1967 [6 Jan., 1967], No. 56710/67. Heading F2E. A caliper 51, Fig. 1, is supported at 51, 59 by a fixed torque plate 21, and the pads (103, 121, Fig. 2, not shown) have backing plates with ears 141, 143, Fig. 5, which engage axial flanges 31, 33 on the torque plate to prevent radially inward movement of the pads, the backing plates also having extensions 151 (153, Fig. 4, not shown) to locate against the caliper wall to prevent radially outward movement. The pads are actuated respectively by a piston 163 and a reaction portion (55) of the caliper, the caliper being mounted by flexible members 57, 59 on the torque plate. The torque on each pad is transmitted to the torque plate by the abutment of shoulders 143<SP>1</SP>, 145 near the ears of the pads, with the facing edges 35, 37 of the flanges 31, 33. A part of the brake torque on one pad 121, is carried by the reaction member 55 to which it is transmitted by pins 133, 135. Extensions 91, 93 on the caliper engage the inner edges or faces of the flanges 31, 33 to guide the caliper during axial movement, the flexible members 57, 59 prohibiting movement parallel to the plane of the disc. In the fluid pressure operating device (Fig. 2, not shown) fluid pressure is applied through an aperture (175), and is exhausted on brake release through an aperture (177). The piston carries the head (241) of a slidable sleeve having a threaded member (223) inside it, the latter having a head (221) which is slotted (at 215) to receive a hand-operated cam (201), and being spring-loaded (at 227) to the OFF position. Relative rotation of the threaded member (223) and the head (241) occurs as the head is carried leftwards by a ball race (244) on the piston when the latter is fluid actuated to the left, so that the wear of the pads is automatically compensated.
Patent GB-1163788-A (GB)
Title: Driver-Sense Circuit Arrangements in Memory Systems
IPC: H03K3/356
Filed: 1966-12-21
Abstract: 1,163,788. Matrix stores. RADIO CORPORATION OF AMERICA. 21 Dec., 1966 [30 Dec., 1965], No. 57216/66. Heading G4C. [Also in Division H3] A bi-stable circuit suitable for a storage matrix has a common input output line with gating means to direct the input and output signals and a complementary transistor inputoutput circuit. The Specification describes a bi-stable circuit and a storage matrix of such circuits, substantially the same as that described with reference to Figs. 1 and 2 of Specification 1,163,789, except that the output amplifier is replaced by one using two complementary transistors having their emitters connected in common to the digit line.
Patent GB-1362107-A (GB)
Title: Rotary cutting tool holders
IPC: B23Q1/70
Filed: 1972-12-13
Abstract: 1362107 Rotary tool holders GATCO ROTARY BUSHING CO 13 Dec 1972 57605/72 Heading B3C A rotary tool holder comprises a body member 9 with an extension portion 15 at one end for engagement in the driven spindle 7 of a machine tool, such as a lathe, a thin walled cylindrical sleeve 9A located on and coaxial with the body member and at least one thrust bearing 30 and a plurality of needle roller bearing elements 26 located between the shell and the body member to permit relative rotation therebetween during operation of the tool, a morse tapered socket 10 being provided for the reception of a tool in the other end of the body member. In operation, the cutting tool is located in the socket and the extension engaged in the spindle thereby effecting rotation of the tool and the sleeve is supported in a rest 8 on the machine frame which supports the tool holder radially and permits axial movement therethrough to feed the the tool into a workpiece.
Patent GB-1332462-A (GB)
Title: Electroluminescent p-n junction device
IPC: H05B33/00
Filed: 1970-12-04
Abstract: 1332462 Electroluminescence RCA CORPORATION 4 Dec 1970 [12 Dec 1969] 57842/70 Heading C4S An electroluminescent device 10 for emitting radiation outside the visible spectrum comprises PN EL semi conductor element 14 emitting radiation outside the visible spectrum, encapsulant 30 transparent to the radiation from the s/c. element and to radiation within the visible spectrum and means, comprising phosphor particles 32 converting a small portion of the non-visible radiation to visible radiation as an indication that the device is emitting non- visible radiation. Phosphor 32 may emit visible light by a two or three photon absorption process and the particles may be in amount 0À5 to 1% or more by wt, of the particle plus encapsulant mixture. The encapsulant may be a hollow dome with the phosphor on its interiorsurface or dispersed within the non-visible radiation in the infra-red region and emitted by a PN-injection type s/c. element. Support 12 is a flat metal disc, soldered s/c. element 14 may be GaAs, InP or an InAs-GaAs mix. Washer 24 is an insulator such as glass or ceramic, dome 30 preferably has a high refractive index and may be of plastics e.g. epoxy, acrylic, polyester, or glycol phthalate plastics and low m.p. glasses. Phosphor 32 may include ions of rare earth crystals, e.g. Yb and Er or Yb and Ho in a host such as LaF 3 , Y 3 OCl 7 , BaYF 5  or BaLuF 5 .
Patent GB-1444247-A (GB)
Title: Apparatus for classifying sheet-like written material
IPC: B07C3/00
Filed: 1973-12-18
Abstract: 1444247 Document sorter TOKYO SHIBAURA ELECTRIC CO Ltd 18 Dec 1973 58469/73 Addition to 1443229 Heading G4M Data on a document such as a letter is read and supplied to a memory look up decoder (Figs. 5, 6, not shown) to produce an address of a sorting pocket which is stored in a memory 28 in a location having a "0" in a busy/not busy bit location BU. There are at least as many memory locations as there are documents in transport positions between a pocket and a supply hopper. The memory locations are read cyclically under the control of a counter 30, the required pocket address is stored in section 28b and the BU location is set to store a "1". A section 28c receives the address of a first photoelectric document detector P1 and a section 28d receives a zero time count signal. The address counter is then incremented. Each time a location with BU= 1 is addressed the value in section 28d is fed to a Time Counter 60 and is incremented by 1 and fed back to the section. At each detector the pocket designating code in section 28b is compared with the current position code in section 28c using comparator 18. If coincidence occurs the document is situated at the detector before the required pocket and the time count is compared with a preset value T3 in unit 58 to cause the appropriate gate to open. If comparator 18 indicates inequality the time count value is examined to see if it lies between preset times T 2  and T 1 . If it does not and is greater than a time T 5  then there has been a jam somewhere. If the value is between T 2  and T 1  and a "Next Position On" signal exists then section 28d is returned to zero and the position of the next detector is stored in section 28a. The "Next Position On" signal will occur when the document being examined is beginning to cross the detector following that of its current position.
Patent GB-1248574-A (GB)
Title: Improvements in or relating to furnace linings
Inventor: CARLSEN JON ERIK MARIUS
IPC: F27D1/00
Filed: 1967-12-22
Abstract: 1,248,574. Furnace linings. DIMO Ltd. 25 Feb., 1969 [22 Dec., 1967], No. 58485/67. Heading F4B. [Also in Division H5] A cylindrical furnace lining 9 comprises a plurality of Gilliminite bricks 11 formed with inwardly facing slots or recesses 20 for receiving. a support arrangement 28 for mounting and locating furnace electrical resistance heating elements 44. The support arrangement 28 comprises a plurality of vertically spaced rows of alternately arranged bricks 31, 33 each having an outer portion engaging within a respective slot 20. Each of the bricks 33 is held in position by gravity by the engagement of a nose 35 with a shoulder 25. A block 18 located in the furnace lining houses a pyrometer. Grooves (14, Fig. 4) are provided in the upper surface of some of the bricks 11 for the passage of electrical leads.
Patent GB-1418628-A (GB)
Title: Internal shoe drum brakes
IPC: F16D65/22
Filed: 1971-12-16
Abstract: 1418628 Internal shoe drum brakes AUTOMOTIVE PRODUCTS Ltd 6 Dec 1972 [16 Dec 1971] 58497/71 Heading F2E Brake shoes 19, 20 are applied by hydraulic pistons 13, 14 when liquid pressure is applied in space 16, and also by a wedge 26A applied by a parking-brake spring 44 which is normally lifted by pneumatic or hydraulic piston 41, the volume enclosed between pistons 13, 14 and a piston 47 connected to the wedge being arranged to be constant during downward movement of the wedge under the action of the spring. Because the cylinder 12 is single acting, in rotational direction A, both shoes are selfenergizing, but in the reverse direction, only shoe 19 is self-energizing. Lateral movement of the shoes is prevented by steady pins (69, Fig. 3B, not shown) having adjustable swivelable seatings at each end and carrying a compression spring. As shown in Fig. 2, manual slack take-up is achieved by a bolt 65, located by a detent spring 68 engaging notches 67 in a carrier sleeve 66. In an alternative form, Fig. 4, the bolt head is serrated and engages in a circular serrated spring 88 carried by the shoe-end. A bolt (60, Fig. 3A, not shown) is provided for manual release of the brake if the fluid pressure fails to lift the wedge.
Patent GB-1217859-A (GB)
Title: Electromechanical transducer and tool assembly
IPC: B06B3/00
Filed: 1967-12-27
Abstract: 1,217,859. Transducer and tool or fastener assembly. OHIO STATE UNIVERSITY. 27 Dec., 1967 [28 Dec., 1966], No. 58672/67. Heading B4C. An assembly comprises an element in the form of either a tool or a fastener and a resonant electromechanical transducer for impacting the element, and one of the transducer and element includes means for receiving a portion of the other such that the transducer and element are relatively movable. As illustrated in Fig. 1 the transducer 5 includes a horn 5 and a sleeve 7 in threaded engagement with the free end on the horn. The sleeve may be shrink or press fitted on the horn. A tool or fastener 6 is received in the recess defined by the horn and the sleeve for axial movement. Vibratory motion of the transducer, during use, inpacts the tool or fastener. In the embodiment of Fig. 2a, the tool includes a head 11c which engages with shoulder 7a to restrict axial movement. The shoulder may be provided by a rubber grommet (7d), (Fig. 2b, not shown) to permit removal and insertion of a tool without removing the sleeve. The means may be provided by a recess (12) (Fig. 3) not shown) in the tip of the horn or in a half-wave extension (15), (Fig. 3a, not shown). Fig. 4 shows the tip of the horn being received in a recess in a tool 16.
Patent GB-1305047-A (GB)
IPC: B23K1/012
Filed: 1970-12-11
Abstract: 1305047 Soldering PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 11 Dec 1970 [16 Dec 1969] 58943/70 Heading B3R A hot gas soldering device comprises a tube 1 having a supply member 3 for a gas, a nozzle 2 for directing the gas on to workpieces, an electric heating coil 5 in the tube 1 for heating the gas, a valve 7 outside the tube 1 in a conduit 6 connected to the tube via the supply member 3 for controlling the gas supply to the tube 1 and a duct 13 extending from the tube 1 at a point between the outlet end 18 of the nozzle and the adjacent end of the heating coil 5. The quartz glass tube 1 houses a quartz glass support 4 on which the coil 5 is wound with its terminals sealed in a spring urged stopper 25 and connected to a voltage source. The valve 7 is electromagnetic and the nozzle end of the tube is mounted in an asbestos cement block 8 secured in a holder 9 by a plate 10. The other end of the tube passes through an asbestos cement block 23 and a spring 24 connected between the stopper 25 and the holder 9 urges the tube against the plate 10. The duct 13 is provided in the block 8 to communicate at one end with the tube 1 and at the other end with a duct 14 in the holder 9 connected to a tube 16 in a support plate 15. The tube 16 communicates with an electromagnetic valve 17 connected to a source of reduced pressure. In operation one of the members to be soldered, e.g. a semi-conductor circuit element is laid on the flat end surface of the nozzle which is provided with radially extending grooves and the valve 17 is opened to hold the element against the nozzle, the tube 1 is adjusted on the plate 15 to align the crystal with conductors on a synthetic resin substrate, the substrate is urged against the crystal, the valve 17 is closed and valve 7 is opened to supply gas heated by the coil 5 to heat the crystal and melt solder between the crystal and conductors. Valve 7 is then closed and valve 17 opened to draw cooling air across the crystal.
Patent GB-1284440-A (GB)
Title: Improvements in or relating to gas turbine engines
Inventor: CARLISLE DENIS RICHARD
IPC: F23R3/36
Filed: 1969-12-09
Abstract: 1284440 Spray burners ROLLS ROYCE Ltd 9 Dec 1969 60035/69 Heading F4T The subject matter is substantially identical with that of Specification 1284439 but the claims are directed to the fact that one nozzle can be connected selectively to a fuel or air supply.
Patent GB-1325500-A (GB)
Title: Thiadiazolidinedione
IPC: A01N47/22
Filed: 1970-12-18
Abstract: 1325500 Thiazolidinediones BADISCHE ANILIN- & SODA-FABRIK AG 18 Dec 1970 [19 Dec 1969] 60139/70 Heading C2C Thiazolidinediones of general formula wherein R 1 , R 2  and R 3  each independently denote H or alkyl which may be substituted by halogen, may be prepared by reacting an appropriate urea derivative with an appropriate halocarbonylsulphenyl chloride. The compounds are useful as herbicides.
Patent GB-1385020-A (GB)
Title: Solidified silica foam product and process
IPC: C04B28/00
Filed: 1971-12-29
Abstract: 1385020 Solidified silica foam products FIBERGLAS CANADA Ltd 29 Dec 1971 [29 Dec 1970 12 Nov 1971] 60538/71 Heading C1A [Also in Division C3] A solidified silica foam product is prepared from an aqueous solution of a sodium and/or potassium silicate containing a surface-tension depressant and optionally a filler, by foaming the solution by gas entrainment, e.g. with air, introducing into the solution before or after foaming a silicon dioxide polymer forming agent (as defined below) to make the foam rigid and water-resistant, shaping the foamed material and then hardening the shaped product in a polymerization zone under a high relative humidity of at least 80% and under conditions of temperature and, if necessary, pressure or physical containment whereby the shaped product hardens substantially free of damaging contraction or expansion. The required humidity during hardening may be provided by affecting hardening while passing the foamed material through a curing tunnel filled with saturated steam or by hardening in a mold which is either completely filled with foam material so that no moisture can escape or is only partially filled with foam material having an appropriately humidified atmosphere thereon. Contraction during hardening is avoided by maintaining the material at a temperature not more than 10‹ F. below its temperature at the entry to the polymerization zone. Expansion is avoided by use of a temperature not more than 5‹ F. above the entry temperature or by hardening in a mold which is either partially filled with foam and then pressurized or is completely filled. The silica polymer forming agents are alkali metal fluorosilicates; potassium fluoborate; calcium fluoroborate or fluorotitanate; dimetallic inorganic salts, e.g. sodium calcium borates or lithium calcium borates; alcoholates and carboxylic acid salts of polyvalent metals, e.g. tetra alkyl titanates; zinc oxide; magnesium or zinc carbonate; and generally, poly valent metal salts of weak acids having a pk A  of at least 1À3, examples being calcium aluminate, tellurite, fluoride, phosphate, pyrophosphate, borate, tungstate, fumarate, maleate, malonate or succinate, magnesium phosphate, barium hypophosphate, aluminium acetate, copper acetate, cadmium tungstate and zinc, aluminium, cobalt or iron borate. Numerous surface tension depressants are given and gelling agents, e.g. triacetin, glycol, alcohols and ketones may be present. Suitable fillers, present preferably in amounts of up to 10% by weight of the final product, are carbon black, titania, diatomaceous earth, silica, burned magnesia, powdered ceramic, and fibres of glass, asbestos or magnesium silicate. The products normally have a dry density of not more than 25 lbs/cu. ft. Reference has been directed by the Comptroller to Specifications 1,334,681 and 1,334,076.
Patent GB-1291482-A (GB)
Title: Reinforcing member for ceiling tiles
IPC: E04B9/04
Filed: 1969-12-12
Abstract: 1291482 Reinforcing splines for ceiling tiles CANADIAN INTERNATIONAL PAPER CO 12 Dec 1969 [14 Feb 1969] 60714/69 Heading E1W Ceiling tiles are strengthened by elongate W- section members with outer flanges 36 inclined at an obtuse angle to each other. Splines 46 engage in slots 32 punched from the flanges 36 and have barbs 48 to engage the body of a tile so anchoring the strengthening member to the back of the tile. The centre, channel section 38, may be rectangular or hemispherical in section instead of V-shaped. The panels may be supported at their edges on a framework of T-section framing members.
Patent GB-1280554-A (GB)
Title: Two-component diazotype material
IPC: G03C1/56
Filed: 1969-12-23
Abstract: 1280554 Photo-sensitive materials KALLE A G 23 Dec 1969 [30 Dec 1968] 62611/69 Heading G2C A two-component diazotype material comprises a diazosulphonate, a coupler and a polyalkylene glycol of which the alkylene group contains 2 to 4 carbon atoms which acts as a stabilizer. The materials may also contain caffeine, triethanolamine, the sodium salt of benzaldehyde-2-sulphonic acid or an amide and be coated on a paper support subbed with casein and silica. After imagewise exposure the image is fixed by applying aqueous citric acid solution.
Patent GB-2002045-A (GB)
Title: Electrographic recording
IPC: B41M5/20
Filed: 1978-08-01
Abstract: An electrographic recording device comprises a combination of a source of silver ions (such as a silver- containing electrode) and a recording material comprising an electrically conductive base having thereon a recording layer comprising a binder having dispersed therein a reducing agent which can reduce silver ions to silver. An electric field is applied across the recording layer using a pattern- reproducing electrode, whereby silver is caused to migrate into the recording layer. Dry electrographic recording apparatus comprises recording material 23 of the kind specified above, means 24, 25 for moving the recording material at a constant rate, a plurality of electrodes 22 (at least one comprising silver) adapted to bear on the recording material, switching circuits 26 for directing electrical signals to the electrodes and an external electrical connection between the electrodes and the conductive base. <IMAGE>
Patent GB-2004213-A (GB)
Title: Hand tool
IPC: B24B23/04
Filed: 1978-09-04
Abstract: A hand tool comprising two moving parts; a rotating (2) and a reciprocating (3) part. The reciprocating part (3), carrying a machining tool, is imparted its movement from the rotating part (2) via a crank mechanism (11, 12) with variable excentricity for adjusting the reciprocating part's length of stroke. A crank pin (11) in said mechanism is therefore excentrically disposed on a rotatable, lockable slide (9) excentrically journalled in a rotatable holder (7) obtaining rotary movement from the drive means of the hand tool. Counter weights (25, 26) in the slide and its holder together counterbalance the movements of the reciprocating part corresponding to the varying lengths of stroke. Upon setting of the crank mechanism to the desired length of stroke, the counterweights are arranged to either work in conjunction or in opposition and are therefore rotatable relative each other to an extent corresponding to the relative movements of the slide and slide holder. <IMAGE>
Patent GB-2008051-A (GB)
Title: Self-stabilising multi-column floating tower
IPC: B63B35/44
Filed: 1978-09-22
Abstract: An offshore floating tower comprises a cylindrical cap 4 at its upper end connected by columns 2, 3 to a ring of buoyancy tanks 5 having the same external diameter as the cap. These buoyancy tanks enclose a bell-shaped chamber which is particularly filled with air and produces pneumatic damping of vertical movement of the floating tower caused by movement of the surface of the sea. The floating tower is ballasted at its lower end. <IMAGE>