baber/WOPTO huggingface dataset:
Patent GB-1409284-A (GB)
Title: Conveyor chains and links therefor
Inventor: KRAMMER R
IPC: B61B10/00
Filed: 1972-12-06
Abstract: 1409284 Chains SEATECH ENG Inc 6 Dec 1972 [13 Dec 1971] 56377/72 Heading F2Q In a conveyer chain comprising a plurality of identical links articulated together, each link comprises a longitudinally extending body portion 12 having an opening 24 at one end and a pin 22 at the other end, and a plate member 14 secured to the body portion 12 in such a manner that it retains the pin 22 and opening 24 in an adjacent link in engagement when the longitudinal axes of the adjacent links are aligned, but permits disengagement when the axes are located at right-angles to each other. The chain may carry a plurality of drive dogs 25 and hold back dogs 28.
Patent GB-1450118-A (GB)
Title: Hybrid structures
IPC: H01P5/20
Filed: 1973-12-12
Abstract: 1450118 Hybrid-T structures THOMSONCSF 12 Dec 1973 [12 Dec 1972] 57637/73 Heading H1W Hybrid-T structures, having the same properties as those normally provided by known waveguide 4-port junctions, are formed on a ceramic substrate from symmetric and asymmetric transmissions lines forming shunt and series T-junctions. In particular, a symmetric or  asymmetric line forms the common arms of two T-junctions whose stems are formed by lines of opposite kinds, whereby one T-junction is a  series junction and the other a shunt junction. Thus, the upper, metallized surface of ceramic substrate 6, Fig. 5, is formed with a slotted (asymmetric) line 140 forming, on the one hand, a series junction with slotted (asymmetric) line 14 and, on the other hand, a shunt junction with the microstrip (symmetric) line 5. The latter is printed on the lower surface of the substrate 6 and overlaps the junction by a quarter wavelength at the mid-band frequency. Ports 1, 4 are mutually decoupled, an input at port 1 provides phase-opposed outputs at ports 2, 3 and an input at port 5 provides co-phasal outputs at ports 2, 3, when the ports are properly terminated. In the modification of Fig. 6, a slotted line 21 forms a series junction with slotted line 20 and a shunt junction with coplanar line 10, 11. The latter consists of an elongated planar conductor 11 arranged on the central axis of a non-conductive slot 10; it is electrically symmetrical. In a modification (Fig. 7, not shown), ports 2, 3 are provided by a microstrip line, port 1 by a further microstrip line, and port 4 by a slotted line. In a further modification (Fig. 8, not shown), ports 2, 3 are provided by a co-planar line, port 1 by a further co-planar line, and port 4 by a slotted line.
Patent GB-1362666-A (GB)
Title: Nonwoven textile fabrics and methods of making the same
IPC: D04H1/4258
Filed: 1971-12-13
Abstract: 1362666 Non-woven fabric JOHNSON & JOHNSON 13 Dec 1971 57788/71 Heading D2B A non-woven fabric 70 comprises a portion 72 comprising overlapping and intersecting fibres having an average length of at least a “ inch, and a portion 74 comprising fibres having an average length of at most 1/6 inch, the fibres in the portions being bonded together by discrete synthetic resin binder particles, and, in addition, fibres in portion 72 being bonded in areas 76 by an intermittent print pattern of discrete binder material. The fabric may be made by depositing one portion on the other by means of a wet-forming process, drying, applying the intermittent print pattern of binder material to the appropriate side, and drying. The fibres of portion 72 may be selected from cotton, regenerated cellulose, cellulose acetate and triacetate, polyamide, polyester, acrylic, modacrylic, polyolefin, spandex, and fluorocarbon fibres. The fibres of portion 74 may be selected from vegetable fibres such as bagasse, wood pulp, and rayon. The synthetic resin binder material may be selected from polymers and copolymers of vinyl ethers, vinyl halides, vinyl esters, acrylates, methacrylates, vinylidene chloride, olefins, acrylonitrile, acrylamide and methacrylamide, natural and synthetic rubbers, polyamides, polyesters, polyesters, and polystyrenes. The binder particles may be deposited with the aid of alum, cationic starch, polyethylene imine, polymeric amines and amides.
Patent GB-1369430-A (GB)
Title: Electro-precipitation
IPC: B03C3/41
Filed: 1971-12-03
Abstract: 1369430 Electrostatic precipitators LODGECOTTRELL Ltd 3 Dec 1971 [8 Dec 1970] 58209/70 Heading B2J Electro-precipitation apparatus comprises a plurality of parallel discharge electrodes 14 and a plurality of collector electrodes 4 which may be associated with rapping gear, each collector electrode being provided with a plurality of elongated corona concentration regions in the form of spaced ribs 20 which extend generally at right angles to the discharge electrodes. The arrangement is such that, in operation, corona discharge takes place between the discharge electrodes and the ribs 20, so that the usual discharge points on the discharge electrodes, may be eliminated.
Patent GB-1455010-A (GB)
Title: Height control position adjustment of an implement or other working unit displaceably mounted on an agricultural machine
IPC: A01D41/14
Filed: 1973-12-17
Abstract: 1455010 Automatic height control MASCHINENFABRIK FAHR AG 17 Dec 1973 [15 Dec 1972] 58388/73 Heading A1F An implement mounted on an agricultural machine 1 may be raised, lowered, or maintained at a fixed height relative to the machine or to the ground by means comprising a hydraulic ram 5 connected via a hydraulic line 10, one way valve 17 and spool valve 9 to a pump 7, spool valve 9 being operated by a solenoid 13 in circuit with a multi-position switch 14. When the switch is placed in position H (i.e. with the terminals designated H connected) the spool valve causes the ram to raise support 3, whilst placing the switch in position S causes the spool valve to release fluid from the ram thereby lowering support 3, the excess fluid draining into a reservoir 8. The switch in position L brings into operation a mechanism 21 which maintains the position of the support 3 relative to the machine frame, thereby enabling the support to be placed at a distance from the ground, pre-set by a lever 26. This mechanism, which is connected to the support 3 via a rod 24 comprises a semi-circular member 22 pivotally mounted on the machine frame, and switches 29, 30. With the support 3 above (below) the pre-set position, switch 30 (29) is engaged, this causes the spool valve to operate the ram 5 and thereby lower (raise) the member 3 to the preset position after which the switch is disengaged. A probe 35, brought into operation by switching to position T, engages the ground, as the machine advances, undulations in the ground cause the probe to operate one of two switches 36, 37 which in turn operates spool valve 9 thereby causing the ram to raise or lower the support 3 to follow the contour of the ground. In an alternative embodiment, the probe 35 is replaced by a pressure sensitive switch in circuit with the spool valve 9 and hydraulically connected to the ram 5 which is adjusted to partially support the weight of the agricultural implement, the latter therefore glides over the surface of the ground. Variations in surface contour resulting in a pressure change within the ram are detected by the pressure sensitive switch which in turn causes the spool valve to operate the ram thereby raising or lowering the support 3 and enabling the implement to follow the surface contour with no variation in surface pressure. The multi-position switch 14 is spring biased to a central position where all circuits are inoperative; in addition the biasing springs provide a toggle device whereby the switch is self holding in the T or L positions.
Patent GB-1185913-A (GB)
Title: Improvements in or relating to Variable Speed Moving Pavements
Inventor: CUMBERBIRCH ALAN
IPC: B66B21/12
Filed: 1967-03-23
Abstract: 1,185,913. Variable speed moving pavements. A. CUMBERBIRCH. 21 June, 1968 [23 March, 1967; 13 April, 1967; 24 May, 1967; 11 July, 1967; 23 Dec., 1967], Nos. 13601/67; 17007/67; 24054/67; 31943/67 and 58584/67. Heading B7L. A transport apparatus comprises platforms 3 forming a continuous moving pavement, each end of each platform 3 carrying a depending pin 4 engaging a wheeled (or sliding) assembly running on an endless track rail 1 disposed in a vertical or horizontal plane, the separation of the rails varying along the track to cause the platforms to vary their alignment (i.e. rotate) so that the pavement moves at different speeds in the different zones A, B, C1, C2, but each platform remains in generally side-by-side relationship with adjacent platforms in all the zones. The gaps 5 in zones C1 and C2 are covered by overlapping the platforms 3, or by providing a further type of overlapping floating platform which is secured by springs to the platforms 3. Each platform 3 has two depending members 20, one of which is engaged by a lug on one of a number of endless drive belts or chains 1a or engages in a variable-pitch helical groove in a rotating drive drum 3a in zones C1 and C2. The motors driving the belts and drums are synchronized. When the rails 1 are in vertical planes the return side of the drive belts la propels the unused return part of the pavement and another drive drum is provided below each drum 3a to drive the unused platforms in zones C1 and C2. When the rails 1 are in a horizontal plane, a pillar 22 is attached to each end of each platform and has rotatable rings 23 to which are secured concertina screens 24 and telescopic handrails 25; the pillar 22 on every sixth platform X contains a slidable rod 27 secured to a cam follower 28 which is raised at each station B by a surface ,29 to contact a screen 24 by means of a lazy tongs 30. The gap between each platform X and its neighbours is bridged by longitudinal overlapping treads 21 pivoted thereto.
Patent GB-1274230-A (GB)
Title: Manufacture of hot pressed ceramic materials
Inventor: LUMBY ROLAND JOHN
IPC: C04B35/593
Filed: 1968-12-11
Abstract: 1,274,230. Hot pressing silicon nitride. JOSEPH LUCAS (INDUSTRIES)Ltd. Oct.20, 1969 [Dec. 11, 1968], No.58886/68. Heading C7D. Ceramics such as Si 3 N 4  optionally containing 1% MgO are hot pressed by increasing the pressure at a rate dependent on the rate of increase of temperature. As shown in the Figure the powder is heated by coil 11, temperature is sensed by pyrometer 13 which feeds a signal to controller 14 through saturable reactor 15 to control the power source 12 to increase the temperature at predetermined rate. Pyrometer 13 also feeds a signal to the rotary millivoltmeter 16 which controls a cam which controls resistance of transducer and the gain of amplifier 17 controlling hydraulic valve 18 for varying the pressure. Example-pressure 750 psi at 1300‹C., 1250 psi at 1400‹ C., 2200 psi at 1500‹ C., 3050 psi at 1600‹C. and 4000 psi at 1700‹C.
Patent GB-1193770-A (GB)
Title: Improvements in or relating to the Continuous Culture of Yeasts
Inventor: LAATSCH HANS-ULRICH
IPC: C12N1/16
Filed: 1968-12-12
Abstract: 1,193,770. Yeast. FORSCHUNGSINSTITUT FœR DIE G€RUNGSINDUSTRIE ENZYMOLOGIE und TECHNISCHE MIKROBIOLOGIE. Dec. 12, 1968 No. 59045/68. Heading C6F. The continuous culturing of yeast e.g. for use in the production of alcohol by fermentation, is effected in a two-stage culture system, the first stage of which operates aerobically with a mash supply of low extract content and, if desired, with filtered and sterilized distiller's spent wash (stillage), and the second stage operates anaerobically with a separate mash supply of high extract content and with discharge from the first stage, and at least a part of the discharge from the second stage is recycled to the first stage. The single second stage as such may be replaced by a plurality of anaerobic stages sequentially connected and a part of the discharge from one or more of these is recycled to the first stage. Of the discharge from the first stage, part is fed to the second stage and the remainder may be sent directly to a continuous alcoholic fermentation process.
Patent GB-1268494-A (GB)
Title: Tape applicator and method of applying adhesive tape by means of said applicator
IPC: C09J7/35
Filed: 1969-05-10
Abstract: 1,268,494. Tape applicators. SESAME INDUSTRIES Ltd. 10 May, 1969 [10 May, 1968], No. 59310/68. Heading B8F. A tape applicator for applying adhesive tape to a surface comprises a frame 14 mounted for adjustable sliding movement by means of guide 15 on rail 16, using hand wheel 20. A plate 21 fixed to guide 15 carries a pivoted arm 23 to the free end of which is fixed spindle 24 on which is journalled free-running roller 25, which is heated at the periphery by suitable means. This may comprise element 27, supplied by power cable 30, connector 31, brushes 32 and contact rings 33. Roller 25 may be arranged to rest on a surface 35 which is moved past the roller, the pressure on which is adjusted by counterweight 37. A length of hot melt adhesive tape 10 is fed from a source so that it is in contact with the heated surface, superficially melted and thence applied to surface 35.
Patent GB-1328649-A (GB)
Title: Method of generating spontaneous elastic-spin oscillations in ferromagnetopiezoelectric semiconductor circuits
IPC: H01L29/84
Filed: 1970-12-14
Abstract: 1328649 Solid state devices WOJSKOWA AKADEMIA TECHHICZNA IM JAROSLAWA DABROWSKIEGO 14 Dec 1970 [13 Dec 1969] 59383/70 Heading H1K A device using electron-phenon interaction to obtain spontaneous elastic-spin oscillations comprises a layer 2 of piezoelectric semiconductor material having two ohmic electrodes 3, on a slab 1 of ferromagnetic material. The Specification states that elastic-spin surface oscillations generated in the ferromagnetic slab 1 due to thermal fluctuations give rise to elastic oscillations in the semi-conductor layer 2. The interaction of the piezoelectric field associated with the elastic oscillations and an electron current generated by a direct voltage applied across the electrodes 3 causes the elastic oscillations to be amplified, and this in turn amplifies the elastic oscillations in the ferromagnetic slab 1. A constant applied magnetic field produces a spin-acoustic resonant condition in the slab 1 and results in a multiplication of spin oscillations. A multilayer structure of alternating ferromagnetic and piezoelectric semiconductor layers may be provided, in which case transverse oscillations are obtained. The semiconductor layer 2 may be of CdS while the ferromagnetic slab 1 may be of yttrium-irongarnet.
Patent GB-1275415-A (GB)
Title: Preparation of n-vinyl carbazole
Inventor: BIGGINS ROBERT
IPC: C07D209/86
Filed: 1968-12-16
Abstract: 1275415 N-vinyl carbazole BRITISH OXYGEN CO Ltd 5 Dec 1969 [16 Dec 1968] 59698/68 Heading C2C N-vinyl carbazole is obtained by reacting a solution of carbazole in 2-pyrrolidone with acetylene at a temperature between 120‹ and 180‹ C., a pressure between 10 and 20 atmos. and in the presence of a metal salt of carbazole or pyrrolidone or mixture thereof, the metal being an alkali or alkaline earth metal. N-vinyl 2- pyrrolidone is also obtained by this process. An example is given which illustrates this process.
Patent GB-1410365-A (GB)
Title: Aerosol dispenser for fluid products comprising a piston pump assembly for generating compressed air serving as propellant and a product metering device
IPC: B05B11/00
Filed: 1972-12-28
Abstract: 1410365 Spray producers CIBA-GEIGY AG 28 Dec 1972 [28 Dec 1971] 59887/72 Heading B2F An aerosol dispenser comprises a piston pump 1, 2 for producing compressed air to aspirate fluid product, the piston having a compressed - air duct 14 therethrough and a valve 5 therein,- a spray nozzel 6 mounted in the piston, a product metering device 28 mounted on the piston, a reservoir 16 for the product surrounding the cylinder 1 of the piston pump, and a product flow path 27 extending from the reservoir to the metering device via a part of the piston. Metering device 28 comprises a chamber in communication with the product reservoir via apertures 28b, the chamber being refilled after use by inversion of the dispenser. The outlet from the metering device is normally closed by a flexible diaphragm 32 having a slit therein. At the end of a compression stroke valve 5 is opened by an abutment 18 on the cylinder 1 and compressed air flowing through Venturi nozzle 6 aspirates product from the metering device 28. In an alternative embodiment, Figure 4 (not shown), the product valve (41) in the metering device outlet is opened mechanically by a rod (44) on the movable valve member of the compressed-air valve 5.
Patent GB-1458008-A (GB)
Title: Vehicle guidance
IPC: G05D1/02
Filed: 1972-12-29
Abstract: 1458008 Automatic control ELECTRICAL RESEARCH ASSOCIATION 19 Dec 1973 [29 Dec 1972] 59997/72 Heading G3N [Also in Division H2]  A method of laying a guidance conductor for vehicles comprises first laying a short length of the conductor accurately, energizing the conductor and laying the remaining length using a wire-laying vehicle having a guidance system including a sensing head on the vehicle providing signals sensing the energized conductor already laid. As shown in Fig. 1 the wire-laying vehicle is an agricultural tractor 10 carrying a mole plough 12, the insulated conductor 14 being carried on a drum 13 and laid behind the vehicle as it moves forward. A power supply on the vehicle is connected to the end of the cable on the drum via a slip ring, an earth return being provided. The sensing head 16 is mounted on a boom 16 extending rearwardly of the vehicle and a gimbal mechanism may be provided to keep the head vertically disposed. The sensing head provides an output in which the level and polarity varies as  the head moves laterally relative to the conductor. This output is compared with a reference signal and any difference is applied to a further comparator receiving also a signal indicating the angular position of the steered wheels of the vehicle, the difference signal operating a steering unit. By adjusting the reference voltage or displacing the sensing head laterally on the boom the vehicle may be arranged to follow a curved path. The sensing head may be used to sense the depth of the cable.
Patent GB-1381651-A (GB)
Title: Machine cloth for the paper or cellulose industries and a method of manufacturing said cloth
IPC: D21F1/00
Filed: 1971-12-23
Abstract: 1381651 Tubular fabrics; seaming nonmetallic sheet material NORDISKI MASKIN-FILT AB 23 Dec 1971 [31 Dec 1970] 60074/71 Heading B5K [Also in Divisions B5 and D1] A fabric for a dewatering cloth or felt is woven with a continuous weft 11 extending in a double ply and forming rows of loops 12 around an edge warp-thread 19 which is later removed after heat setting the fabric so that the fabric can be laid out flat to provide weft loop 3 by which the fabric may be joined into a belt by a thread 19. The loops may be formed alternately on two abutting edges of the fabric along which the thread 19 extends and which may be at one or both edges of the tube or in the centre of the warp as the fabric is woven.
Patent GB-1315645-A (GB)
Title: Photoflash lamps
IPC: G03B15/04
Filed: 1971-12-29
Abstract: 1315645 Flash bulbs GTE SYLVANIA Inc 29 Dec 1971 [28 Dec 1970] 60513/71 Heading G2L A percussively ignitable flash-bulb of the type in which the primer comprises a metal tube 10 containing an anvil wire 12 bearing a mass of fulminating material 14 has a metallic deflector 24 disposed inside the envelope 2 between the mouth of the tube 10 and the bulk of the filamentary combustible material 16. The deflector is preferably secured to the anvil wire and consists of a metal washer or wire ring which is placed around the anvil wire and compressed between a pair of dies (32, 34), Fig. 5 (not shown), to shape it and clinch it to the anvil.
Patent GB-1291110-A (GB)
Title: Improvement in or relating to methods of remedying leaks in thermal insulation systems
Inventor: PHILLIPPS RONALD ARTHUR
IPC: F17C13/12
Filed: 1969-12-31
Abstract: 1291110 Storing liquefied gases CONCH INTERNATIONAL METHANE Ltd 14 Dec 1970 [31 Dec 1969] 63510/69 Heading F4P  Leaks in the thermal insulation of a liquefied gas storage tank or reservoir are remedied by injecting into the insulation in the vicinity of the leak, a mixture of two gases, one of which solidifies from the mixture as the latter cools, the other remaining gaseous. The temperature at which solidification commences may be varied by varying the proportions of the gases, the mixture however remaining flowable below this temperature thus ensuring a penetrating repair. The gases are stored in separate tanks connected to a common line via a pressure reducing valve, heater, thermometer and non- return valve. The method may be applied to inground storage tanks comprising a cavity surrounded by a layer of soil frozen by means of freeze tubes and covered by roof. Leakage through the soil may be repaired by injecting the gas mixture through one of the freeze tubes or through a separately bored hole. Examples of gas mixtures are CO 2  and nitrogen, or, when the tank or reservoir contains LNG, n-butane mixed with nitrogen, methane helium or argon.
Patent GB-671344-A (GB)
IPC: H04N3/233
Abstract: 671,344. Cathode-ray tubes. CATHODEON, Ltd., and WHITING, K. W. Dec. 15, 1949 [Dec. 17, 1948], No. 32764/48. Class 39 (i). [Also in Group XL (b)] Spiral distortion in a television picture signal generating tube caused by electron optical aberrations in the image focus coil is corrected by applying a compensating waveform to the deflecting circuits of the tube. When the degree of spiral distortion is small the compensating waveform may be a sine wave instead of a wave which follows a third-power law. In the described embodiment, the correction is effected by applying to the frame and/or line scanning circuits a correcting sine wave derived from the line and/or frame scanning circuits respectively so that a similar spiral (" S ") distortion is produced in the scanning raster. The arrangement for correcting for the distortion in the horizontal (i.e. line) scanning direction is shown in Fig. 1 and comprises a filter network including the elements R1, C1 ... C3, which converts the square-wave voltage pulses occurring at the anode of the line output valve V1, firstly, into a saw-tooth wave, at the point A, and, secondly, into a sine wave at the point B. A predetermined fraction of this sine wave, the phase of which may be varied by means of R 2  so that the " S " distortion it produces is similar to that to be corrected, is combined with the frame scanning waveform, via valve V2 and transformer T3. A somewhat similar arrangement for correcting for " S " distortion in the vertical (i.e. frame) scanning direction is described with reference to Fig. 2 (not shown).
Patent GB-690769-A (GB)
Abstract: 690,769. Press-button retractive switches. DAIMLER-BENZ AKT.-GES. Jan. 23, 1951 [Jan. 23, 1950], No. 1758/51. Class 38 (v) [Also in Group XXXI] In an actuating arrangement for an engine starter and start-assisting means (see Group XXXI) the means for controlling the starter motor of the vehicle engine comprises a push button 21 arranged within a recess 20 in a button 5 controlling the start-assisting means. The button 21 is connected by a rod 19 to a member 18 slidably mounted in a housing part 6. A bridge shaped contact piece 22 with contacts 23, 24 is axially displaceable in the member 18, springs 25, 26 being arranged between the piece 22 and the member 18. Springs 27, 28 are arranged between the piece 22 and an insulating bushing 11 mounted in another housing part 7. The bushing 11 carries plates 12, 13 havingcontacts 16,17, the plates being connected to conductors 14,15. Movement of the button 21 to the right relative to the button 5, and irrespective of the position of the button 5 relative to a mounting 3, in a panel 1, closes the contacts 16, 23 and 17, 24 against the action of the springs 27, 28, thus connecting a battery 29 to the usual magnetic switch 33 to operate the switch through the conductors 14, 15 and thus to connect the battery 29 to the starter motor 31.