baber/WOPTO huggingface dataset:
Patent GB-1372238-A (GB)
Title: Automatic washing of a number of samples
IPC: G01N1/34
Filed: 1971-09-20
Abstract: 1372238 Washing absorbent medium sheets M REUNANEN 20 Sept 1971 43799/71 Heading BIX [Also in Division G1] Apparatus suitable for use in washing absorbent medium sheets to remove undesired substances from samples absorbed on the sheets, the density of the washing liquid varying to increase at the beginning of the washing procedure and decrease during the terminal period of the washing procedure comprises washing tanks 6 containing the absorbent medium plates, a wash liquid tank 4 in part divided into several pairs of vessels, a connection for liquid flow between each pair of vessels, an automatically operating valve unit 5 for guiding wash liquid from each pair of vessels in turn into the washing tank, a thermostat unit 602 for controlling the temperature of the wash liquid and a control device 11 for controlling operating of the apparatus. The pairs of vessels contain liquid of different densities and liquid in the lower vessel of each pair is mixed by introduction of air bubbles through means 415 (Fig. 6). In the course of the procedure described, tank 6 is filled from the bottom with liquid of increasing density gradient, then with liquid (from vessel 431) having constant density. When vessel 431 is empty a contact at 436 is broken and control unit 11 releases the tank at 691 when it rotates 180‹ under the action of spring 692. The tank is then fed from above with liquid of decreasing density gradient.
Patent GB-1241432-A (GB)
Title: Threshold circuit for comparing variable amplitude voltages
Inventor: TALLEY JAMES REGGIE
IPC: G11C11/06
Filed: 1968-09-18
Abstract: 1,241,432. Transistor switching circuits; magnetic storage arrangements. TEXAS INSTRUMENTS Inc. 18 Sept., 1968 [18 Oct., 1967], No. 44379/68. Headings H3B and H3T. [Also in Division G3] A thresholding circuit suitable for use in the output of a core storage matrix comprises a differential reference voltage amplifier, shown as Q 1 , Q 2 , providing an output stabilized by a negative feedback amplifier, shown as Q 3 , Q 4  Q 5 , which output is used as the collector supply for a differential signal voltage amplifier, shown as Q 5 , Q 6 . The reference and input amplifiers shown are similar being formed as parts of an integrated circuit. Accordingly the outputs across R 1  and R 4 , when the signal is equal to the reference voltages, are equal and opposite and so cancel at the input of Q 7 . Any departure from equality drives the output of amplifier Ai to a " 0 " or " 1 " level. The feedback amplifier provides at the lower end of R 1  a stable voltage having a value independent of the reference or supply voltages. If the circuit is to detect departure from equality in both senses a further transistor is connected with its output in parallel with the output of Q 7  and its base connected to the collector of Q 6  (Fig. 3, not shown). In Fig. 6, not shown, a single reference amplifier serves two signal amplifiers and the output amplifiers are strobed by a pulse fed to one emitter of a multi-emitter transistor. The outputs are commoned through respective emitters of a multi-emitter T.T.L. circuit. It is explained that large core memory planes may be divided into sub-planes in more than one sense line per bit and the single circuit may be used for a plurality of lines since it will be retrieving only from cores from each bit in the memory word.
Patent GB-984410-A (GB)
Title: Telescopic system having two magnifications
Inventor: MANDLER WALTER
IPC: G02B15/00
Filed: 1963-11-11
Abstract: 984,410. Telescopes. ERNST-LEITZ . (CANADA) Ltd. Nov. 11, 1963, No. 44388/63. Heading G2J.  In a telescopic system having two objectives 11, 12 of different focal lengths, one eyepiece 10, and an erecting system (not shown), a rhomboidal prism 14, positioned adjacent the focal plane of the eyepiece, is shifted perpendicular to the optic axis (parallel arrow 16) to change from one objective to the other (see Figs 1a, 2a). The field of vision which at the lower magnification M 1  falls within a circle D engraved on the reticle of the eyepiece will fill the whole field of vision at the higher magnification M 2 . It is therefore possible to change magnification, gradually or in discrete steps,without loosing sight of the target. In another embodiment the prism 14 is replaced by two similar prisms rigidly connected along rhomboidal faces, the combination being shiftable to change magnifications.
Patent GB-1433877-A (GB)
Title: Carpet yarn controlling jacquards
IPC: D05C15/00
Filed: 1972-09-26
Abstract: 1433877 Tufting machines JOHN T HARDAKER Ltd 19 April 1973 [26 Sept 1972] 44405/72 Heading D1G The Jacquard yarn tubes 2 arranged as in specification 1362893 have eyed pointed ends 4 to directly pierce and insert the yarn ends into a backing 22. The Jacquard firstly moves the selected tubes 2 to a forward position (Figure 4, not shown) where grippers 21 close on the tubes 2 and relative movement between the grippers 21 and backing 22 causes the piercing. The grippers 21 may be arranged so that the yarn ends are not in a straight row.
Patent GB-1440328-A (GB)
Title: Corrosion resistant aluminum-zinc coating and method of making
IPC: C23C2/12
Filed: 1973-09-21
Abstract: 1440328 Hot dipping in Al-Zn bath BETHLEHEM STEEL CORP 21 Sept 1973 44436/73 Heading C7F A ferrous substrate is hot-dipped in an Al-Zn- Si bath, and subsequently cooled at a rate of at least 20‹F/sec, the cooling being continued until such time that the residual heat in the substrate does not tend to remelt the coating. Ferrous sheet or strip 1 is cleaned, pre-heated to about 1200‹F in furnace 10, heated at 800‹-1200‹F in a reducing atmosphere (e.g. H 2 ) in chamber 11, fed into a bath 13 of 25-70 wt. per cent Al, balance Zn where Si is present in an amount not less than 0À5 wt. per cent of the Al. The emergent strip is wiped by heated air or steam at 17, and cooled in chamber 19 by jets of air or water to give the desired cooling rate.
Patent GB-1462849-A (GB)
Title: Primary cell
IPC: H01M6/50
Filed: 1975-10-29
Abstract: 1462849 Discharge indicators for primary cells SAFT-SOC DES ACCUMULATEURS FIXES ET DE TRACTION and COMPAGNIE INDUSTRIELLE DES PILES ELECTRIQUES 29 Oct 1975 [31 Oct 1974] 44708/75 Heading H1B A primary cell comprising a negative electrode 4 of powdered Zn, a positive electrode 3 of, e.g. steel and an electrolyte 6 of, e.g. a gelled solution of KOH has a perforated Cu or Cu alloy sheet 7 visible through a transparent part of the case 1 to act as a discharge indicator. In a modification, the cell may have a solid depolarizer of manganese dioxide.
Patent GB-1478863-A (GB)
Title: Construction of panel
IPC: E04C2/04
Filed: 1974-10-18
Abstract: 1478863 Tiling SOUTHERN CHEMICAL Ltd 18 Oct 1974 [23 Oct 1973] 45312/74 Heading E1B Bricks or tiles 23 are secured to walls by means of an intermediate sheet 20 of insulating material, e.g. foamed phenol formaldehyde, polystyrene or polyurethane, having ribs 21 defining elongate recesses into which the tiles can be inserted. The recesses have studs 22 which position the bricks or tiles at a spacing. The bricks or tiles are bonded in the recesses by adhesive and the joints may be pointed with plaster or cement. The height of the ribs is preferably half the thickness of a brick or tile.
Patent GB-1147490-A (GB)
Title: A method of making etch-resistant masks
IPC: H01L21/00
Filed: 1967-10-05
Abstract: 1,147,490. Etching. INTERNATIONAL BUSINESS MACHINES CORP. 5 Oct., 1967 [13 Jan., 1967], No. 45428/67. Heading B6J. [Also in Division H5] An etch resistant mask is prepared by coating a substrate with a polymeric film, exposing selected portions of this film to electron beam radiation, the film and the exposure being such that the degree of polymerization of the whole of the thickness of the exposed areas is reduced and dissolving the exposed areas in a developing solution in which the unexposed areas are substantially insoluble. Preferably the thickness of the polymeric film is not greater than 25 microns and the charge density of the electron beam is in the range 10-<SP>5</SP> to 2 x 10-<SP>3</SP> coulomb/ cm<SP>2</SP> and the accelerating potential of the beam is in the range 5 to 30 kV. The developing solution may consist of a first liquid capable of dissolving the polymeric film whatever its degree of polymerization and a second liquid which is incapable of dissolving the polymeric film, the proportions of the two liquids being such that the mixture is just able to dissolve the exposed areas of film but is incapable of dissolving the unexposed areas. Preferred film forming materials are cellulose derivatives e.g. cellulose ether or ester, cellulose acetate, cellulose acetate-butyrate, or cellulose propionate; vinyl type polymers or copolymers in which one half of the carbon atoms are quaternary and wherein the repeat units of the polymer preferably have the formula where R 1  and R 2  can be any one of the groups CH 3 , C 6 H 5 , -COOCH 3 , and -COOÀC 2 H 4 ÀOH. Preferred polymers are given as polyisobutylene, poly(α-methylstyrene), methyl methacrylate, and a copolymer methyl methacrylate/2 hydroxy ethyl methacrylate. Particular solvent mixtures for the specified polymers are given in the Specification. The average molecular weight of the polymer used is given as 6,000 to 20,000. Prior to exposure to radiation the filmmay be baked e.g. at 150 C. to 180 C. for about 30 mins, to improve its adhesion to the substrate. After the exposed portions have been dissolved, the polymeric film may be baked e.g. at a temperature below the softening point of the film, to reduce or eliminate any undercutting of the etched pattern due to the lateral spread of the radiation during exposure. The width of the electron beam used is given as 2000 and the resolution obtained is 0À8 to 2À0 microns. The development time used in treating the irradiated film using the materials listed in the Specification never exceeds 1 min.
Patent GB-1360428-A (GB)
Title: Vacuum cleaner including a fan assembly
IPC: A47L5/22
Filed: 1971-09-30
Abstract: 1360428 Centrifugal fans PHILIPS GLOEILAMPENFABRIEKEN NV 30 Sept 1971 [3 Oct 1970] 45608/71 Heading F1C A vacuum cleaner for assembly comprises an impeller (not shown) surrounded by guide blades 8 constituting a radial diffuser, the guide blades being located in a diffuser housing 2 having ducts 10 for discharging the air exhausted from the guide blades. The ducts 10 are bounded by wall portions 9 which extend to the rear of the diffuser housing at an angle to a  plane transverse to the fan axis. A cover 11 having a central air inlet 12 is sealed to the diffuser housing 2 by a ring 13 which is preferably of soft rubber and which also serves to steady the vanes 8 against vibration. Additional guide blades may be provided in the region 17 to guide the air exhausting from the ducts 10. In a modification, the sloping wall portions 9 are omitted. The seal ring 13 is also omitted and its functions are performed by a raised portion on the inside surface of the cover which is shaped to fit into the spaces between the blades 8. In a multi-stage fan, the invention may be applied both at the fan discharge and between stages.
Patent GB-952239-A (GB)
Title: Filtering apparatus
IPC: B01D24/48
Filed: 1961-12-22
Abstract: 952,239. Filters for liquids. PFAUDLER PERMUTIT Inc. Dec. 22, 1961 [Jan. 4, 1961], No. 46022/61. Heading BID. The apparatus of Specification 858,609 is modified by making backwash pipe 40 of non - uniform crosssection: thus, the downwardly-extending portion 45 has an internal cross - sectional area equal to from 0À2 to 0.4% of the horizontal cross-sectional area of the filter compartment, and the upwardlyextending portion 42 has an internal crosssectional area at least 40% greater than that of the downwardlyextending portion. This construction reduces the "backwash - initiating" period, which extends from the occurrence of the first flow through ejector 60 to the time when backwash pipe 40 fills up and begins to act as a siphon. Deflector 70 and pipe 71 of the earlier Specification are dispensed with.
Patent GB-1120164-A (GB)
Title: Improvements relating to levelling devices
Inventor: BROCKLEBANK NORMAN
IPC: F16M11/18
Filed: 1965-11-01
Abstract: 1,120,164. Levelling mobile jib-cranes. PRIESTMAN BROS. Ltd. 20 Oct., 1966 [1 Nov., 1965; 14 March, 1966], Nos. 46099/65 and 11085/66. Heading B8B. A mobile jib-crane, Fig. 1B, is levelled by two wedge rings 21, 22 which are rotated in opposite directions until a bed-plate 16 is horizontal. The superstructure is first slewed through 90 degrees clockwise as seen in plan from the Fig. 1B position, this point being determined by a spirit level arranged longitudinally of the bed-plate. A leg 113 is then extended until a foot 121 contacts the ground. The wedge rings are unlocked from the superstructure and substructure and rotated together through 270 degrees anticlockwise by a pinion 134, Fig. 6. This position is signalled to the operator by a cam-operated light. A sector carrier 63, Fig. 6, is locked and the wedge rings remain unlocked. The upper wedge 22 is driven clockwise by the pinion 134 and the lower ring 21 is driven through the same angle in the opposite direction by sectors 68, Fig. 7. This rotation continues until a transverse spirit level on the bed-plate indicates that the latter is horizontal. The wedge ring locks are applied and the foot 121 raised out of engagement with the ground so that slewing can take place. The wedge ring locks comprise dogs 98, Fig. 7, which are moved into and out of engagement with teeth 99 on the rings by pneumatic rams 106 and spring-loaded toggle linkages 101,102.
Patent GB-1099295-A (GB)
Title: Control system for sub-sea apparatus
Inventor: HUBBY LAURENCE MEADE
IPC: F15B1/02
Filed: 1965-11-01
Abstract: 1,099,295. Wells. TEXACO DEVELOPMENT CORPORATION. Nov. 1, 1965 [Nov. 1, 1965], No. 46227/65. Heading E1F. [Also in Division Fl] Hydraulically actuated blow-out preventing devices 12, 13, for use at a well head on the sea bed are supplied from a submerged hydropneumatic accumulator 21 through a conduit 22 and four-way valves 23, 24 controlled from above sea level and the devices 12, 13 discharge through said valves 23, 24 and a duct 43 into a submerged sump 42 from which fluid is withdrawn through a conduit 52 into a tank 51 above sea level; the accumulator 21 being recharged through a valved duct 72 from a storage tank 62 above sea level and supplied by a pump 54. Valves 23, 24 are switched by submerged hydraulic piston and cylinder devices connected by flexible conduits to manually operated four-way valves 27, 28 above sea level which are in turn connected by a supply conduit 37 to a tank 41 and by a return conduit 35 to the tank 51. The supply tank 41 is connected to tank 62 by a duct 77 and a pressure reducing valve 78. Hydraulic fluid e.g. oil is forced from sump 42 by air from a compressor 95.
Patent GB-1357534-A (GB)
Title: Drive couplings
IPC: F16D3/10
Filed: 1970-09-30
Abstract: 1357534 Shaft coupling SIMMS GROUP RESEARCH & DEVELOPMENT Ltd 21 Sept 1971 [30 Sept 1970] 46409/70 Heading F2U A shaft coupling (e.g. in a fuel injection pump drive) comprises two members 10, 11a, one housing in a bore 17 a slidable piston 18 urgeable by fluid pressure to vary the relative angular position of the two members, against a resilient opposition 35, fluid pressure being supplied to the bore via a valve with an element 23 movable under centrifugal force against a spring 30 of which the force varies with the relative angular position of the members. The variation in the loading of the spring may be due to a cam 34 fixed to the member 10 causing radial movement of a roller 32 on a lever 33 pivoted on to the member 11a (e.g. by an eccentric pin). The valve element 23 may selectively connect the bores 17 via duets 20, 21 to a drain 26 and a supply duct 27, 28.
Patent GB-1444229-A (GB)
Title: Tleecommunication cables
IPC: H01B7/285
Filed: 1972-10-09
Abstract: 1444229 Electric cables BICC Ltd 9 Oct 1973 [9 Oct 1972] 46413/72 Heading H1A A fully-filled telecommunications cable in which deterioration of olefine polymeric insulation or sheath material due to the presence of the water impermeable filling medium is said to be avoided by the use of special stabilizers in the insulation or sheath compounds. The stabilizer is a phosphorus acid derivative of the formula in which: R is an aliphatic, cycloaliphatic, or aromatic radical of I to 12 carbon atoms; R 1  and R 2  are aliphatic or cycloaliphatic radicals of up to 12 carbon atoms; x is 1 to 4. The water impermeable filling medium consists of polyisobutylene, polybutene, a polyisobutylene-based mixture, a polybutene-based mixture, a highly refined petroleum jelly, or a mixture containing a major proportion of highly refined petroleum jelly, which filling medium will not drain under the influence of gravity or such hydrostatic pressure as may arise in the event of damage to the cable sheath but which will permit relative sliding movement of the conductors over one another during any bending of the cable.
Patent GB-1201351-A (GB)
Title: Installation for exchanging the rolls of a rolling mill
Inventor: DEHAINE GEORGES
IPC: B21B31/10
Filed: 1967-10-11
Abstract: 1,201,351. Roll charging apparatus. SOC. LORRAINE DE LAMINAGE CONTINU. 11 Oct., 1967 [26 Dec., 1966], No. 46433/67. Heading B3M. Roll changing apparatus for a mill stand inludes a manipulating mechanism, which when not in use, Fig. 2, provides an upper surface flush with the mill floor 7, and a supporting carriage 46 which is movable parallel to the mill rolling line and carries replacement rolls. The manipulating mechanism includes a frame 12 which is attached to the rod 39 of a jack 38, for movement towards and away from the stand. Pivoted at 13 to the end of the frame are plates 14 which carry roll contacting sleeves 19 and 20, a jack 17 controlling the movement of the plates. In operation, the plates 14 are raised and the sleeves aligned with the end of the work rolls 2 and 3 by means of a sliding or pivotal connection between the sleeves and plates. The frame 12 is moved towards the stand until the sleeves support or clamp the roll ends and the frame is withdrawn, together with the rolls. The surface 30 of the mechanism is retracted by a jack 35 to permit such withdrawal. The carriage 46, Fig. 3, is moved into the path of the frame to receive the rolls, and is then further moved until a replacement set of rolls on the carriage are aligned with the stand. The new rolls are inserted in the mill by the manipulating mechanism after the carriage has been moved clear of the mechanism. Backing rolls 4 and 5 of the stand can be replaced, if desired, after withdrawal of the working rolls. A hook 40 on the end of the rod 39 contacts a hook 41 on a base 42 which supports the roll assemblies, and the assemblies are withdrawn. A travelling bridge replaces the assemblies with new ones and after their insertion in the stand, the working rolls can be replaced as before. Similar apparatus is suitably provided for each of a number of stands in tandem (Fig. 1, not shown), the carriages 46 being linked together for common movement. Each carriage can have separate, spaced, supporting surfaces for new and used roll assemblies, instead of adjacent surfaces.
Patent GB-1522036-A (GB)
Title: High pressure electric discharge lamps
IPC: H01J61/073
Filed: 1976-11-11
Abstract: 1522036 Metal vapour lamps GENERAL ELECTRIC CO Ltd 11 Nov 1976 [12 Nov 1975] 46699/75 Heading H1D In a h.p. discharge lamp with Hg, rare gas and one or more volatile metal halides, working at a total pressure of at least one atmosphere, with a tubular discharge envelope, e.g. of fixed silica, running horizontally, to improve temperature distribution and arc stability a W wire electrode at each end supported by a sealed-in lead 3, e.g. a Mo foil pinch, comprises outer 5, central 6, and inner 7 section with the outer 5 attached to the lead 3, the central section 6 running inclined to the axis towards some part of the cylindrical wall, and the inner section 7 extending into the discharge envelope so that it lies between the said part of the cylindrical wall and the axis, and the discharge path between the free ends lies parallel to the axis. Any of the sections of each electrode may include or be formed of a coil of wire 8 or the three sections may each be straight with a coil supported on one of them; an emissive material may be contained in a coil or coiled part of the electrode, in which case an outer coil may surround it. The lamp mounting should ensure that the inner ends of the electrodes lie at the lowermost position in the envelope. The end pinch seals of the electrodes should preferably be above the axis to avoid liquid halide attack on the sealed leads; an auxiliary electrode may also be fitted in the same pinch. A suitable lamp contains Hg, Xe or Ar, NaI, ScI 3 , and may be mounted in a glass outer envelope, which may contain N 2  and may be coated with an IR reflective coating of, e.g. SnO 2  or In 2 O 3 .
Patent GB-1517839-A (GB)
Title: Processes for embossing machinereadable information onto a document
IPC: B29C59/02
Filed: 1976-11-10
Abstract: 1517839 Embossing security documents and the like LGZ LANDIS & GYR ZUG AG 10 Nov 1976 [17 Nov 1975] 46790/76 Headings B6A and B6J  A hot embossing die is used to transfer a thermoplastic layer from an embossing foil to a document and to simultaneously emboss both the said layer and the document with machine readable optical markings having a light modifying relief structure. The thermoplastic layer enables finer markings to be embossed on the document than would be possible on a paper or cardboard document alone. The thermoplastic layer may have a reflective coating, and may be coloured or printed.
Patent GB-1278568-A (GB)
Title: Radio transmission control arrangements
IPC: H04B7/26
Filed: 1970-10-05
Abstract: 1278568 Radio signalling CIT COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS 5 Oct 1970 [3 Oct 1969] 47162/70 Heading H4L An arrangement for controlling the transmitted power of a transmitter-receiver (for example to minimize consumed power or reduce the chance of detection) comprises an attenuator in the drive to the power circuit controlled in accordance with received pilot-tone signals representing the signal strength at a remote location. As described each of a pair of transmitter-receivers in mutual communication has, as shown, an attentuator 16 (between modulator 14 and RF power amplifier 17) which is controlled by pilot-tones F 1 , F 2  ... in for example the band 200-300 Hz. One of these tones is generated at the remote location by a circuit 30 responsive to received signal strength and controlling oscillators in a unit 19. The circuit 30 contains a number of threshold circuits S 1  ... S n  whose outputs are supplied to a logic circuit 31. The received tones are filtered in unit 26 and control via a logic circuit 27 a digital-toanalog arrangement for providing a control voltage for varicap diodes in the attenuator 16. Fig. 3 (not shown) illustrates the circuit in more detail, particularly the logic circuits 27 and 31.
Patent GB-1136368-A (GB)
Title: An electrical resistance heating element
Inventor: WRINGER PETRUS H J DE
IPC: H05B3/10
Filed: 1967-10-17
Abstract: 1,136,368. Electric resistance heaters. REACTOR CENTRUM NEDERLAND. 17 Oct., 1967 [20 Oct., 1966], No. 47286/67. Heading H5H. A heater comprises on outer jacket 3 of molybdenum, tantalum, niobium or an alloy thereof shrunk around a cylinder 2 of electrically insulating material, either boron nitride or beryllium oxide, which is subsequently drilled out and lightly shrunk around the resistance conductor 1 of molybdenum, tantalum, niobium or an alloy thereof. The central resistance conductor 1 may be a cylindrical jacket enclosing a cylinder (4) containing other components such as channels for conductors or a fluid, (Fig. 2, not shown). The heater is used, e.g. for heating liquid sodium, potassium or lithium.