baber/WOPTO huggingface dataset:
Patent GB-1229233-A (GB)
IPC: E02F3/64
Filed: 1968-04-26
Abstract: 1,229,233. Bowl type scrapers. L. R. SIMMONS. 26 April, 1968 [22 Nov., 1967], No. 16472/70. Divided out of 1,229,232. Heading E1F. Positioned across the mouth of a scraper bowl 10 is an elevator 22 that is suported on arms 11 through pivot means 42 and means, jack-actuated links 35 or jacks, that control pivoting of the elevator relative to the arms; the arms 11 in turn being swingable vertically about pivotal conections 31 with the sides of the bowl by an actuator or actuators 13. The actuator(s) 13 control the extent of the front opening of the bowl and the means control the angle of inclination of the elevator so that said angle may be adjusted to that most suitable for raking material into the bowl. Limited pivoting of the elevator relative to the arms against spring means may be permitted by lost motion connections between the elevator and the links 35. This limited pivoting prevents jamming of the elevator when large lumping material is entering the bowl. The floor construction of the bowl forms the subject matter of the referred to Specification 1,229,232.
Patent GB-1229474-A (GB)
IPC: H01L23/40
Filed: 1968-06-14
Abstract: 1,229,474. Semi-conductor devices. THEODOR KIEPE, ELEKTROTECHNISCHE FABRIK. 14 June, 1968 [16 June, 1967], No. 28602/68. Heading H1K. A heat sink for a semi-conductor element comprises a first part 1, to which a semi-conductor element 2 is fixed in electrical and thermal contact, and a second part 3 to which the first part 1 fixed in thermal but not in electrical contact, the second part having fins 3<SP>1</SP> to dissipate the heat generated by the semi-conductor element. The first part 1 of the heat sink is made of copper, coated with silver to resist corrosion, and the electrical insulation between the two parts of the heat sink is a mica sheet 4. The second part 3 may act as a base on which other devices, such as capacitors, &c., may be mounted.
Patent GB-1230855-A (GB)
IPC: H05B6/50
Filed: 1968-05-15
Abstract: 1,230,855. Valve oscillating circuits. D. RISCHE, R. HERFURTH and U.-W. RISCHE, [trading as HERFURTH G.m.b.H.]. 15 May, 1968, No. 23182/68. Heading H3F. [Also in Division G3] An apparatus for the high-frequency welding of plastics sheet material, the welding electrodes C are supplied with H.F. energy from an oscillator R by way of an inductor L2 and a variable reactance C2, the oscillator R including a frequency-determining circuit L1, C1 coupled to the inductor L2. A signal I, proportional either to the oscillator power, as shown, or the welding electrode voltage, is compared with a reference signal S and the difference is used to control a motor M which automatically adjusts the variable reactance C2 whereby the power delivered by the oscillator is caused to rise at the beginning of each welding operation to a predetermined value at which it remains. An electro-hydraulic system may replace the motor M, and the comparison circuit for deriving the control signal may include transistors (Fig. 4, not shown).
Patent GB-1231144-A (GB)
IPC: B29C48/08
Filed: 1969-01-16
Abstract: 1,231,144. Die for extruding films having zones differing in thickness; laminates. INTERNATIONAL PAPER CO. 16 Jan., 1969 [26 Jan., 1968], No. 2633/69. Headings B5B and B5N. As shown in Fig. 3, a die for melt extruding a film of thermoplastic material having predetermined zones differing from one another in thickness comprises a die body 18 (Fig. 3) comprised of two mated die parts or halves 21 and 22 provided with heating elements 23 and 24. The lower part of the die body is formed of opposable jaws 25 and 26 each having flat, parallel, internal surfaces which define lands 27 and 28 respectively defining a slot-shaped extrusion orifice 29 through which the thermoplastic material is extruded in the form of a molten flat film 30 (Fig. 2). Header 17 is a central cavity which extends the length of the die body 18 and communicates with an extrusion opening 31 the other end of which communicates with the extrusion orifice 29. The cross-sectional area of the extrusion opening 31 is greater than the cross-sectional area of the orifice 29. Each of the wall elements 32 and 33 of the opening 31 are provided with a longitudinally extending recess or groove of semicircular cross-section 34 and 35 defining a channel 36 of circular crosssection. The channel 36 accommodates a cylindrical flow regulating rod 37 divided into two or more threaded segments of the same outer diameter, each segment having threads of different depth, as shown in Fig. 4 illustrating a rod having three segments. As the molten plastic, after passing down the slot 31, passes between the various segments of the rod 37 and the walls of the channel 36, a profile of varying thickness is imparted to the film 30 by the various threaded segments, and as the profiled film flows past the threaded rod 37 and then down and through the orifice 29 the film retains this profile of varying thickness. After passing through a draw-down zone or air gap 38 (Fig. 2) the still molten film 30 contacts preselected areas of an advancing web of substrate material 39, which is carried on a clockwise rotating pressure roll 40, just prior to reaching nip 41, between pressure roll 40 and chill roll 42, whereby the substrate is coated with a solidified film of the thermoplastic material. The substrate 39 is preferably paperboard, but may be paper, glassine, regenerated cellulose film, polymeric films such as poleyster films, metal foil, cloth, or glass fibre cloth. The thermoplastic material used can be polyolefines, polystyrene, polyvinyl chloride, polyurethane, polymethyl methacrylate or nylon. Polyethylene is preferred.
Patent GB-1252893-A (GB)
IPC: B04B3/00
Filed: 1968-12-02
Abstract: 1,252,893. Centrifugal strainers. STORKWERKSPOOR-SUGAR N.V. 2 Dec., 1968 [2 Dec., 1967], No. 57131/68. Heading BID. A centrifugal strainer for separating solid material from liquids comprises a frusto-conical drum 4 having an inner filter wall 5, a hollow body 16 to which is attached at least one scraper 23 arranged to operate over substantially the entire height of the inner surface of wall 5, the drum 4 and the body 16 being arranged to rotate, on shafts I and 12 respectively, at slightly different speeds in the same direction; the axis of rotation making an angle α with the inner surface of wall 5, and the scraper having a cutting edge to dislodge solid filter cake from the inner surface of wall 5 on to inwardly facing. porous scraper-base 24. The angle between scraper-base 24 and the axis of rotation is also α. There. are preferably two diametrically disposed scrapers on body 16. The mixture to be filtered is fed through channel 38 to the portion 37 of. body 16, and flows through volute 18, chambers 19 and slots 20 to the filter wall 5. As the chambers 19 move slowly with respect to wall 5, the mixture is deposited thereon in the form of a layer. The liquid passes through the rotating filter wall 5, and then flows through openings 7 in drum 4 into channel 9 which has an outlet 11. The filter cake is lifted off the wall 5 to the base 24 by the scraper 23 situated diametrically opposite. A gas, e.g. air, is fed through hose 30 to chamber 28, flows through outlet 27 and passes through porous base 24. The dislodged solid slides down the base 24, and passes through an opening in the base plate 17 to discharge funnel 34. While on the filter wall, the filter cake may be washed with liquid distributed from sprays secured to body 16. The angle α is so selected for the particular solid material being filtered that the cake just continues to remain on the filter wall during the centrifuging process.
Patent GB-1256483-A (GB)
IPC: H01R13/64
Filed: 1970-03-11
Abstract: 1,256,483. Pipe &c. couplings. AMP Inc. 11 March, 1970 [14 March, 1969], No. 11634/70. Heading F2G. [Also in Divisions E2 and H2] A housing assembly EC comprises a body 11  containing latching arms 13 movable longitudinally in slots (14, Fig. 5, not shown) of the body by operation of a member OM external to the body, co-operating cams 16, 17 on the arms and body respectively causing the arm ends 15 to move either towards or away from the body axis. In the operation of mating the body H to a similar body or a further body- ECM, the member OM is rotated about disc portions 19 in apertures 18 of the body H such that eccentric bosses 21 on the discs move the arms to the position shown in Fig: 2 by sliding in slots 23 within the arm (Fig. 7). The two bodies are pushed together then the member OM is rotated to withdraw the arms into the body H, the arms also moving towards their respective side walls, as cams 16 and 17 slide against each other, so that apertures 15a in the arm ends surround projections 8 of a similar body or 8a of the body ECM and draw the-two bodies tightly together; Co-operating corners 4, 5 and 4a, 5a are provided on each body, each body being made of a material such as a polycarbonate or a metal.
Patent GB-1259506-A (GB)
IPC: G03C1/91
Filed: 1969-04-24
Abstract: 1,259,506. Coating photographic supports. EASTMAN KODAK CO. April 24, 1969 [April 26, 1968], No.21050/69. Heading G2C. A light-sensitive photographic silver halide material is made by activating the surface of a hydrophobic polymeric support by treatment with a corona discharge and, at least 30 minutes later, coating said surface with at least two photographic layers, at least one of said layers being a lightsensitive silver halide emulsion layer. The delay after activation, which may be up to 36 hours, allows the fogging effect of the activated surface to be dissipated before coating. The hydrophobic supports include those of polyethylene, polypropylene, linear polyesters, polyamides, cellulose esters, polyacrylonitrile and polycarbonates, and polyethylene coated paper. The support may have an internal antistatic layer containing sodium sulphate or an external antistatic layer comprising hydroxyethyl cellulose, colloidal silica and sodium p-( 1:1:3 :3 tetramethylbutyl) phenoxyethoxyethylsulphonate. The coated layers are preferably three silver halide emulsion layers sensitized to red, green and blue containing colour couplers to form colour negative or colour reversal materials.
Patent GB-1264905-A (GB)
IPC: C01B31/30
Filed: 1969-08-20
Abstract: 1,264,905. Coating with refractory metal or Si carbides. TEEG. RESEARCH Inc. Aug. 20, 1969 [Aug. 26, 1968], No. 41532/69. Heading C7F. Substrates of ferrous, non ferrous, carbon or quartz are coated with a carbide of at least one of Ti, W, Zr, Hf, Ta, Nb, V, Th and Si by heating the substrate above 1050 degrees in a gas mixture containing H 2  and more than x% volume of a hydrocarbon and y % volume of a halide of one of the above elements where y is at least equal to 0À02%x and x varies linearly from 3% at 1050C. to 0À5% at 1300C. and maintained at 0À5% above 1300 C., Fig. 6. The specified substrates are W, WC, Mo and Nb based alloys, (Registered Trade Mark) "Inconel", plain carbon, tool and stainless steels, graphite and quartz. Steel substrates are heated to 1100-1250C., graphite to 1200-1600C. and quartz 1300-1325C. As shown in Fig. 1 the substrate 88 is heated in reactor 10 connected to boiler 20 and purged with H 2  and A via line 82. Liquid TiCl 4  is fed into 20 via 24 and flowmeter 32 and H 2  and A via 36. After introduction of methane, deposition takes place 15-50 mils/hr. Ethane, propane, or benzene may replace methane. The coated products may be used for machine tool parts such as punches, dies, reamers, drills, end mills, cutting tools, wear pads for aircraft and motor brakes, dental burs and wear guides in textile, leather and synthetic fibre industries.
Patent GB-1288612-A (GB)
IPC: F16B25/10
Filed: 1969-10-23
Abstract: 1288612 Self-drilling screws BULTFABRIKS AB 23 Oct 1969 [23 Oct 1968 17 Oct 1969] 52043/69 Heading B3N A self-drilling screw has a spoon-like drilling end 1 with chip-surfaces 4 connecting the cutting edges 2 to a chip groove 6. The axis of the part conical end 1 may lie along the axis A of the screw, or it may lie along an axis B. The end 1 is connected to a semicircular portion 8, which in turn is connected to semicircular portions 9, 9<SP>1</SP>, whose radii may be struck from points above and below axis A. Part thread hobbing members 13-15 may be provided. The screw is manufactured by cold forming in a split mould, and then rolling the threads 16.
Patent GB-1288914-A (GB)
IPC: H05H1/32
Filed: 1969-10-22
Abstract: 1288914 Electric heating UNITED STATES BORAX & CHEMICAL CORP 22 Oct 1970 [22 Oct 1969 20 May 1970] 51869/69 and 24495/70 Heading H5H A plasma torch for use in carrying out chemical reactions has the gas supply means and reactant feed means at opposite ends of a quartz tube, in which the plasma is formed, and they are made of relatively high strength material to avoid breakage. The plasma is formed in a quartz tube 14 which is surrounded by a quartz cooling jacket 17 and an induction coil 19. A cylindrical baffle 13 directs water over the length of the tube 14 as it flows from inlet 16 to outlet 18. The gas admission head 20 is made of brass and is secured to the upper end of the tube 14 together with a sealing ring 53. It is formed as a cylinder, closed at its upper end and having a cooling jacket 30 and means for admitting gas comprising a duct 28, communicating space 29 and apertures 24. The reactant feeding means is also made of brass and comprises one or more annular members 38, 47. These may be provided with coolant passages 41, gas supply ducts 36 having outlets 39, 40 directed upwardly into the plasma flame and inlets 50 for solid materials. The parts are assembled with the interposition of sealing gaskets 51, 52 and the whole assembly may be mounted on a further tube, which may be of glass, in which the reaction is completed.
Patent GB-1289197-A (GB)
IPC: C07D333/48
Filed: 1970-07-21
Abstract: 1289197 A hexachloro-dihydrothiophene-1,1- dioxide STAUFFER CHEMICAL CO 21 July 1970 [2 Oct 1969] 35182/70 Heading C2C The invention comprises 2,2 3,4,5,5-hexachloro - 2,5 - dihydrothiophene - 1,1 - dioxide. It may be obtained by oxidizing 2,2,3,4,5,5- hexachloro - 3,4 - dihydrothiophene with chromium trioxide. An example is given for the preparation of the compound. It is useful as a bactericide or a fungicide and may be applied to materials liable to infection by bacteria or fungi, e.g. soap.
Patent GB-1289345-A (GB)
IPC: B65D5/00
Filed: 1969-04-08
Abstract: 1289345 Cartons REED INTERNATIONAL Ltd 19 Jan 1970 [8 April 1969] 17950/69 Heading B8P A cardboard blank for forming an open topped box has its side panels 2 surmounted by strips 4 which extend beyond the ends of the side panels so that by folding the extensions 5 on to end panels 3, the main parts 6 of the strips 4 are folded to form inwardly directed flanges at the top of the box. Locking panels 8-11 are folded over the end panels 3 and the extensions 5 to hold the box in its erected condition. The locking panels 8 and 11 have tabs 12 and 13 which engage in slots 14 and 15 in the box base 1. The panels 10 lie across the corners of the box. Gussets 16 connect the extensions 5 and the main strip parts 6.
Patent GB-1290707-A (GB)
IPC: C09J175/00
Filed: 1969-11-06
Abstract: 1290707 Laminated products BOSTIK Ltd 6 Nov 1969 [7 Nov 1968] 54383/69 Addition to 1236043 Heading B5N [Also in Division B2] A surface of a body of synthetic polymeric material, the molecules of which have at least one hydrogen atom in a repeating unit of a carbon-carbon chain of the polymer molecule, is prepared for adhesive bonding by applying photo-sensitizer material and organic isocyanate material to a surface of the polymer and then irradiating the surface with ultra-violet radiation whilst photo-sensitizer material and organic isocyanate material are present on the surface. The polymers which may be treated are those having a critical surface tension of wetting of 35 dynes per centimetre or less as determined by contact angle measurements, e.g. polyethylene, polypropylene, copolymers of ethylene and propylene alone or with a minor amount of a non-conjugated diene, e.g. hexadiene, and fluorine-containing polymer such as polyvinyl fluoride and polyvinylidene fluoride. The isocyanate may be triphenylmethane triisocyanate, polyarylene polyisocyanate, tolylene diisocyanate, methylene bis - 4 - phenyl isocvanate, phenyl isocyanate applied in organic solvent solution. The photo-sensitizers may be halogenated hydrocarbons, e.g. methylene chloride, trichloroethylene, chloroform, ketones, e.g. benzophenone, acetophenone, benzoin, 2-acetonaphthone, acenaphthene and fluorene. It is stated that the photo-sensitizers interact with the resin substrate producing groups which will react with isocyanate groups. The isocyanate and photo-sensitizer may be applied separately, or together, e.g. in solution in a common solvent or as a solution of the isocyanate in the photosensitizer. The isocyanate and photosensitizer may be included in an adhesive composition or a photo-sensitized material may be admixed with an adhesive which includes a compound, e.g. a polyurethane having active isocyanate groups. The adhesive may be linear polyether glycol urethanes, linear polyester glycol urethanes, adhesives based on natural rubber, synthetic rubber such as neoprene and butadiene-acrylonitrile copolymers especially adhesives containing heat advancing phenolic resins and magnesium reacted heat advancing alkyl constituted phenolic resins, curing type epoxy resins and resinous polyesters. The adhesive composition must be applied in liquid form when the photosensitizer and -free isocyanate or an adhesive component providing -NCO groups are included, but otherwise may be applied as solution, preformed film, powder, melt. The examples relate to the bonding together of two strips of polyethylene, polypropylene, ethylenepropylene - diene terpolymer, ethylene - propylene-diene terpolymer coated polyester fibre fabric, or vinyl fluoride polymer and the bonding of a rubber heel to a polyethylene heel rise element subjected to roughening.
Patent GB-1290735-A (GB)
IPC: C07F7/18
Filed: 1969-12-31
Abstract: 1290735 Silicon chelates; curing silanolterminated polysiloxanes GENERAL ELECTRIC CO 31 Dec 1969 [3 Jan 1969] 63562/69 Headings C3S and C3T Novel silicon chelates of the formula wherein each R denotes C 1-6  alkyl, C 1-6  alkoxy or phenyl, R<SP>1</SP> denotes the radical n denotes 0, 1 or 2, X denotes a halogen atom or an acyloxy radical containing not more than 8 carbon atoms, Y denotes phenyl or C 1-6  alkyl, and a denotes 2 or 3, are prepared by reacting a diketone R-CO-R<SP>11</SP>-CO-R (wherein R<SP>11</SP> represents a straight chain C 1-3  alkylene radical) with an organosilane Y 3-a SiX a+1 . Uses.-As low temperature curing agents for fluid silanol-terminated organopolysiloxanes, to which conventional fillers and organic acid metal salt catalysts may be added as optional ingredients.
Patent GB-1290869-A (GB)
IPC: H04M1/60
Filed: 1969-10-01
Abstract: 1290869 Automatic volume control; substation circuits WESTERN ELECTRIC CO Inc 1 Oct 1969 [1 Oct 1968] 48219/69 Headings H4K and H4R  An amplifier, particularly for signals from an operator's telephone set, has an arrangement for increasing the gain, by change of feedback, on an input signal exceeding a predetermined level; for changing the gain with change in line current; and for changing the bias on the amplifier transistors with change in line current. Line current is used as an indication of whether the set is connected to a PBX with an amplifier or to an operator's cord circuit and to provide an appropriate change in gain. Fig. 2 shows the amplifier A H , which has a negative feedback loop including resistors R 13 , R 2 , and R 1 , and has supply current derived from the line circuit, via the polarity guard 3, and resistor R 11  in parallel with the base emitter path of transistor Q6. The voltage dropped across R 11  is used to derive the bias for transistors Q 1  to Q 5  and Q 7  to maintain the linearity of the amplifier. In addition the emitter collector path of Q 6  is connected, in series with R 14  and R 15 , from the negative feedback line, at the junction of R 13  'and R 2 , to the common line and provides a shunt on the feedback line to reduce the feedback and provide high amplifier gain when the line current is high, i.e. when the amplifier is connected to an operator's cord circuit rather than to a PBX including an amplifier. A further shunt to the common line is provided on the feedback line, from the junction of R 1  and R 2 , by transistor Q 10  and R 24 , the impedance of Q 10  being controlled by the signal level at the microphone amplifier output to reduce the gain during intervals in speech, to suppress noise. In order to provide the same voice switching level regardless of the condition of the line current gain switching circuit the operating signal for the control of Q 10  is derived from the junction of resistors R 14  and R 15  in the feedback circuit, the level at this point remaining substantially constant regardless of the switching condition of Q 6 .
Patent GB-1296064-A (GB)
IPC: B61L27/00
Filed: 1969-08-27
Abstract: 1296064 Selective signalling WESTING- HOUSE ELECTRIC CORP 27 Aug 1969 [26 Sept 1968] 42704/69 Heading G4H A synchronization waveform 5A1, Fig. 5, is supplied over line 14 to counters 18 at remote stations, the waveform containing a pulse in as many time slots as there are stations and an empty, synchronizing time slot which is detected at 24 to reset the counters 18. Information 5A3 transmitted over line 16 is sampled and held by a bi-stable circuit 22 at each station which is enabled by counter 18 and gate 20 during the corresponding time slot, each time slot including an information bit pertaining to the enabled station. The information is preferably in a "comma-free" code so that if the reset of a counter fails the counter will precess and the resulting randomized data sampled will be indicative of a loss of synchronism. Alternatively, if speech is transmitted in time division multiplex, loss of synchronism will be indicated by an unintelligible output. The reset circuit includes an AND gate which receives inputs from the synchronization waveform and from a circuit tuned to that waveform frequency, the inputs being similar only during the synchronizing time slot.
Patent GB-1296298-A (GB)
IPC: H01P1/08
Filed: 1971-06-30
Abstract: 1296298 Aerials HOLLANDSE SIGNAALAPPARATEN NV 30 June 1971 [2 July 1970] 30697/71 Heading H4A A procedure for sealing a radiating waveguide aperture is to provide a piece of polytetrafluoroethylene (P.T.F.E.) whose dimensions correspond with those of the aperture, and whose edges have a film of solderable material, and to solder it over the aperture. The film may be constituted by a copper layer over which a leadtin layer is deposited by electro-plating. If the waveguide is made of aluminium, the edges of the aperture may be bronzed and then provided with an electro-plated lead-tin layer.
Patent GB-1297729-A (GB)
IPC: G02B27/64
Filed: 1971-04-19
Abstract: 1297729 Stabilized optical systems FRANCE ARMED FORCES, MINISTER OF 19 April 1971 [19 Feb 1970] 21753/71 Heading G2J A sighting device for use in, e.g. a helicopter, has a mirror 2 that is stabilized in azimuth and elevation by a gyro which also stabilizes a prism 4 about the axis XX to prevent tilting of the image. The mirror 2 views through windows 8 in caps 3, 5, the cap 5 being resiliently mounted in the helicopter and the image is reflected from the mirror 2 through a Galilean telescope 6, the prism 4 and astronomical telescope 7 that may pivot about the axis XX. The observer may be replaced by a television or film camera and, if a television camera is used, the prism 4 could be replaced by electronic means for effectively rotating the scanning axis of the camera in dependance upon rotation of the azimuth of the gyro.