baber/WOPTO huggingface dataset:
Patent GB-1463867-A (GB)
Title: Scaffolding
IPC: E04G7/30
Filed: 1974-09-30
Abstract: 1463867 Scaffolding joints SGB GROUP Ltd 30 Sept 1974 [10 Oct 1973] 42411/74 Heading F2M A scaffolding joint for connecting a number of horizontal members 1 to a vertical member 2 comprises a fixed bush 10 secured as by welding to the member 2 and having conical and cylindrical parts 11, 12, respectively, to provide an upwardly facing tapering annular groove, plates 25 welded to the horizontal members each formed with upper and lower tongues 26, 27, respectively, of which the lower tongues 27 fit the groove in the bush 10, and a clamping bush 14 which is slidable on the member 2 and has a downwardly facing groove similar to the upwardly facing groove of the bush 10, for receiving the tongues 26, the bush 14 having a sloping cam surface 19 engageable with a lug 20 on the member 2 so that the plates 25 are clamped by rotation of the bush 14, the latter also having a slot 18 to allow movement of the bush 14 past the lug 20 to allow insertion and removal of the tongues. Apertures 50 in the bush 10 allow drainage of water from the joint. In Figs. 2 and 4 each tongue is curved to correspond with the circumference of the tubular member 2 and extends over a quarter of the circumference of the latter, so that up to four members 1 can be joined to a member 2. A larger number of members 1, e.g. eight as shown in Fig. 6, are joined to a single member 2 by flattening the ends of the members 1 and welding narrow plates 41, each having a pair of tongues as in the case of plates 25, to the flattened ends 40.
Patent GB-1448036-A (GB)
Title: Aerial towed target
IPC: F41J9/10
Filed: 1974-10-01
Abstract: 1448036 Towed aerial targets DORNIER SYSTEM GmbH 1 Oct 1974 [28 Nov 1973] 42489/74 Heading B7W In order to facilitate repair and re-use a towed flying target comprises a basic metal skeleton structure 1, which, forward, supports a housing 3 for electronic equipment and, aft, a hollow tail structure housing a recovery parachute 5. Hit indicator microphones 6, 6<SP>1</SP> are mounted laterally on housing 3 which at its forward end carries a guide 8 for a tow cable 7. The structure is enclosed by a faired casing 14 formed in two halves 14<SP>1</SP>, 1411 fitted on to the structure from front and rear thereof and having a tail opening 16 for ejection of the parachute, tail fins 17, 17<SP>1</SP> being mounted on opposite sides of the casing. Antennae 9 are mounted on the structure 1 which encloses buoyancy apparatus. In an alternative construction the outer casing is cylindrical and fitted on the structure from one end thereof.
Patent GB-1271000-A (GB)
Title: Process for the production of photographic films and foils
Inventor: SCHENK WERNER
IPC: G03C1/85
Filed: 1969-08-27
Abstract: 1,271,000. Subbed photographic film supports. FILMFABRIK WOLFEN VEB. Aug.27, 1969, No.42601/69. Heading G2C. Cellulose acetate films for photographic use are pre-treated before the application of lightsensitive emulsions by applying a solution or dispersion of a copolymer of at least one acrylic acid or methacrylic acid ester with at least one vinyl group containing compound in a solvent or solvent mixture containing methanol and/or acetone and/or methylene chloride at a temperature of 25-40‹C. and then drying the coated film at 60-120‹C. The vinyl component preferably forms 75-95% of the copolymer and the copolymer is suitably present in amounts of 1-25% wt. of the solution. 1-2 g/l of an electrolyte e.g. MgCl 2 , MgBr 2 , K 2 SO 4  or KCl may be added to the coating composition to prevent static charging of the substrate. Coating adhesion may be improved by including 1-10% wt. ethylene chlorhydrin. The coating is preferably applied as the film is removed from the drum of a casting machine. The treated film is coated with light-sensitive emulsions and/or silver free auxilary layers in which the gelatine may be partially or wholly replaced by synthetic resin.
Patent GB-982751-A (GB)
Title: Separation of dibasic acids
IPC: C07C51/48
Filed: 1963-10-29
Abstract: Aqueous mixtures of succinic, glutaric and adipic acids are separated by contacting the mixture with water-immiscible solvent to give a water to solvent ratio of 0.05 to 2.0, separating into two phases, and recovering adipic acid from the immiscible solvent phase and succinic and glutaric acid from the aqueous phase.  The aqueous mixture is particularly, the residue after the crystallization of adipic acid from the oxidation product of cycloparaffins in a two-stage process.  The solvents may be aliphatic alcohols with 4-15 carbon atoms and the esters thereof. The immiscible solvent phase is again washed and adipic acid fractionally crystallized from the aqueous stage while the mother liquor is returned to the original aqueous mixture. The succinic and glutaric acids may be recovered in combination from the original aqueous phase, or obtained individually by contacting with a water-immiscible solvent and recovering succinic acid from the resulting aqueous phase and glutaric acid from the solvent phase, preferably by a further extraction with water.
Patent GB-1131129-A (GB)
Title: Improvements in or relating to telecommunications exchange systems
IPC: H04Q3/00
Filed: 1966-09-26
Abstract: 1,131,129. Automatic exchange systems. SIEMENS A.G. 26 Sept., 1966 [30 Sept., 1965], No. 42807/66. Heading H4K. In an exchange system, particularly a PBX, having a switching network which is liable to internal blocking, means are provided for repeatedly attempting to complete a connection in the face of such blocking. The further attempts are made at intervals of a few seconds for the case of "equipment-engaged" conditions. In the case of called-subscriber-busy conditions, busy tone may be reverted whereby the caller can respond by operating an earthing key and hanging up whereafter repeated attempts at call completion are automatically made at intervals of a few minutes, the caller being rung when the called line tests free. If the called party remains busy the new call may be diverted to another subscriber (no details given). The facility for repeatedly trying to set up a connection may be reserved for priority calls, e.g. incoming from main exchange calls or calls to night service lines. Moreover the facility may only be brought into use if the caller actuates his earthing key. The nature of the switching network is not stated but the marker may be of the path search/memory map variety. The register utilizes relay chains for storing the digits pertaining to the called party.
Patent GB-1275438-A (GB)
Title: Improvements in and relating to hydraulic telescopic shock absorbers
Inventor: REICHELT JOHANNES
IPC: F16F9/348
Filed: 1969-08-29
Abstract: 1275438 Shock absorber piston valves BARKAS-WERKE VEB 29 Aug., 1969 43053/69 Heading F2S In a shock absorber piston valve having a spring loaded valve element 5 which co-operates with an annular collecting space 12 in which channels 3 terminate, a recessed annular disc 11 defines the inner edge of the space. The depth of the disc 11 may, as shown, equal that of the space. Alternatively, it may not, in which ease a permanently open passage through tne piston is formed in addition to this one-way valve, liquid flowing either through the middle of the valve elements (Fig.3, not shown) or round the outside (Fig. 4, not shown). Channels 4, an element 7, and a spring 8 constitute a conventional oneway valve through the piston in the opposite direction.
Patent GB-1535780-A (GB)
Title: 16-aryloxy-17,18,19,20-tetranoprostanoic acid and derivatives
IPC: C07C67/00
Filed: 1975-10-21
Abstract: 1535780 Silylated protaglandin intermediates AMERICAN CYANAMID CO 21 Oct 1975 [1 Nov 1974] 43213/75 Heading C3S [Also in Division C2] Trimethylsilyl 9 - oxo - 11#,15α - bis - (trimethylsilyloxy) - 16 - phenoxy - 17,18,19,20- tetranorprosta - cis - 5,trans - 13 - dienoate is prepared by oxidizing trimethylsilyl 9α- hydroxy - 11α,15α - bis - (trimethylsilyloxy) - 16- phenoxy - 17,18,19,20 - tetranorprosta - cis- 5,trans - 13 - dienoate, obtained by silylating 9α,11α,15α, - trihydroxy - 16 - phenoxy- 17,18,19,20 - tetranorprosta - cis - 5,trans - 13- dienoic acid.  Reference has been directed by the Comptroller to Specifications 1,350,971 and 1,409,841.
Patent GB-1106912-A (GB)
Title: Fluid-level detecting apparatus
IPC: G01F23/24
Filed: 1965-10-12
Abstract: 1,106,912. Liquid level indication. SCULLY SIGNAL CO. Oct. 12, 1965 [July 2, 1965], No.43281/65. Heading G1H. An adaptor for rendering a fluid sensor 1 draught and foam proof comprises a chamber 3, surrounding the sensor 1, provided with inlet and outlet apertures 5, 9" and an open-ended shield 9 surrounding and depending below the chamber 3 and provided with apertures 9' disposed above a predetermined level at which the sensor 1 is mounted within the chamber 3. The sensor 1 is connected in a bridge circuit to detect the fluid-level and relay means, responsive to a periodic signal are provided for alternatively checking whether the sensor 1 is within predetermined high or low values indicating the presence or absence of fluid.
Patent GB-1207361-A (GB)
Title: Imaging system
IPC: G03G15/04
Filed: 1967-09-22
Abstract: 1,207,361. Electro-photographic processes. RANK XEROX Ltd. Sept.22, 1967 [Sept.20,  1966], No.43296/67. Heading G2H. A method of forming an electrostatic latent . image which comprises applying an electrostatic charge to the surface of a non-electrically conductive and non photo-conductive material 15 selectively exposing the charged surface to high intensity electro-magnetic radiation source of at least 200 joules to produce the latent image. The radiation source may be flash lamps containing xenon, krypton, helium, neon and/or argon having a flash duration of from about 0 to 140 micro seconds Examples of insulating materials are:- (Registered Trade Mark), "Staybelite", polyethylene terephthalate ethyl cellulose, cellulose acetate, poly carbonates, polyethylene, polypropylene, chlorinated natural rubber, vinyl chloride-acetate, polyvinyl chloride the material 15 is coated on a substrate 16. Aqueous based or polar liquid developers may be used in addition to toners dispersed in insulating liquids. Metal complexes or compounds, e.g., cuprous tetramine complex, chromium salts, and potassium chromate may also be used.
Patent GB-1477835-A (GB)
Title: Heat-sensitive recording material
IPC: C09B55/00
Filed: 1973-09-14
Abstract: 1477835 Imines AGFA-GEVAERT 7 Aug 1974 [14 Sept 1973] 43337/73 Heading C2C [Also in Divisions B2 and G2] A dye precursor of the general formula X-Ar-CH=N-R 1  wherein Ar represents a bivalent aromatic hydrocarbon group, R 1  represents an aryl or substituted aryl and X represents a -NR 2 R 3  group wherein R 2  and R 3  are alkyl, cycloalkyl, aralkyl or aryl or together close a ring (e.g. of piperidine, pyrrolidine or morpholine), is prepared by reacting X-Ar-CHO and H 2 NR 1 . In specific compounds described R 2  and R 3  are variously methyl, ethyl, #-chlorethyl, #-cyanoethyl, and the substituents on R 1  (when phenyl) are selected from methoxy, -OC 2 H 4 O.C 6 H 5 , -O-CH 2 ) 10 COOC 2 H 5 , C 6 H 5 , bromo, C 6 H 5 NHCOCH 2 O-, CH 3 S-, A compound where Ar is naphthyl and R 2  and R 3  are ClC 2 H 4 - and a bis-compound are also given.
Patent GB-1115783-A (GB)
Title: Organosilicon binders
Inventor: BONITZ ECKHARD
IPC: C07F7/18
Filed: 1965-10-13
Abstract: Organosilicon binders are prepared by mixing organosilanols or condensation products or reaction products thereof containing either hydroxyl or alkoxy groups with either an organometallic silanolate or organometallic siloxanate containing Ca, Al, Fe or Mg; the examples relate to organometallic compounds of Ca.  The binder may also contain a filler. This may react with the system, e.g. cement or may be a passive filler.  The latter may, e.g. be metal oxides, glass, asbestos, ceramic materials, cellulosic materials.  Other polymers, e.g. condensation polymers: polyesters, polyamides, polycarbonates, phenoplasts or aminoplasts or addition polymers of: olefins, styrene, vinyl chloride, acrylic acids and esters may be used.
Patent GB-1176729-A (GB)
Title: Purge Arrangement for Absorption Refrigeration Systems.
Inventor: OSBORNE WILLIAM THORNTON
IPC: F25B43/04
Filed: 1967-09-25
Abstract: 1,176,729. Refrigerating. CARRIER CORP. 25 Sept., 1967, No. 43564/67. Heading P4H. Part of the solution from the discharge side of the solution circulating pump in an absorption refrigeration system is discharged into a purge line so as to draw non-condensible gases from the absorber. As shown, the inlet of the purge line 24 is located beneath the tube bundle 13 in the absorber 12 and solution from pump 32 is discharged into the inlet through line 55. The solution and entrained non-condensibles pass into a separator 60, the non-condensibles rising, through a check-valve 72, into a chamber 65 and the solution returning through line 61 to the absorber. A valve 67 is periodically opened to admit solution from pump 32 to chamber 65 to expel the non-condensibles therein to atmosphere via relief valve 70. The solution passing through line 55 is cooled in heat exchanger 57 to reduce its vapour pressure. Line 55 may be arranged to discharge solution into line 24 at any point along the vertical extent of the latter.
Patent GB-1528598-A (GB)
Title: Method of producing sheet metal springs and disc springs produced by the said method
IPC: F16D13/58
Filed: 1975-10-23
Abstract: 1528598 Springs LUK LAMELLEN UND KUPPLUNGSBAU GmbH 23 Oct 1975 [23 Oct 1974] 43663/75 Heading F2S [Also in Division B3] A disc spring of the form shown has its surface treated by blasting, e.g. shot peening, followed by smoothing to remove roughness caused by the blasting and irregularities caused by stamping out the blank.
Patent GB-1366918-A (GB)
Title: Lifting device
IPC: B66F3/24
Filed: 1971-09-20
Abstract: 1366918 Jacks for aircraft Y DUCUING 20 Sept 1971 43745/71 Heading B8T [Also in Division F1] A lifting slide 2 on a column 1, shown inclined, includes a load hook 3 to engage an aircraft undercarriage. The slide 2 is raised by a central screw (52), Fig. 2 (not shown), threaded in a nut (51) attached to the slide 2 by arms 5 engaging in two diametrically opposed grooves (53) in the column 1. The screw (52) is rotated through planet-wheel gearing (not shown) by a spanner 6 fitted with a handle 7 with a reversing ratchet. This manual drive may be replaced by various motors (not shown). The column 1 is mounted on a carriage 8 with a set of four wheels 11 and a pair of wheels 12. A strut 9 supports the column 1 at an angle of about 10 degrees to the vertical. The wheels 11, 12 run in a U- shaped cross-section rail 13 which distributes the load over the ground and allows the device to follow movements of the aircraft. An adjustable brake (55), Fig. 3 (not shown), is fitted to prevent unintentional lowering of the load, the screw (52) being mounted on a roller bearing. Figure 4 (not shown), illustrates an alternative embodiment wherein the aircraft is lifted by a spherical seating (111) engaging a supporting ball (112) on the aircraft. The seating (11) is carried by a pair of arms (109) mounted on rollers (119), (119<SP>1</SP>) running on opposite sides of a column (101) and connected through balance beam (113) and rod (114). The arms (109) are lifted by an hydraulic ram (120), (121).
Patent GB-1394690-A (GB)
Title: Optical system for capsule inspection
IPC: A61J3/07
Filed: 1972-09-22
Abstract: 1394690 Photo-electric inspection of capsules ELI LILLY & CO 22 Sept 1972 [23 Sept 1971] 44046/72 Heading G1A Medicinal capsules are inspected photoelectrically by rotating each capsule about its own axis and detecting light-reflected from the side and at least one end. Illumination. The optical system for illuminating a capsule 25, held by suction against rollers 26, comprises in the arrangement of Figs. 2 and 17, a filament lamp 70 just off one focus F1 of strip section ellipsoidal mirror 72. The capsule is just off the other focus F2 of the elliptical mirror and the effect is to produce a glare line illumination generally parallel with the axis of the capsule, which wraps around the top and bottom ends thereof. Alternative illumination systems comprise: an elongated source e.g. a filament or fluorescent lamp, curved or straight; separate elongated sources to illuminate ends and sides of capsule; row of separate sources; fibre optic guides may also be utilized. Photo-electric viewing. As indicated in Fig. 7, three optical systems are used; one views directly the side of a capsule; and the other two use mirrors 104, 108 to reflect light from the ends of the capsule. In the side viewing system, light specularly reflected (the glare line) from a spinning capsule is normally focused on to a mask 16<SP>1</SP>, Fig. 14b, at a central obturating portion. 'However, the presence of a bulge or bubble in the capsule surface, causes deviation of the beam to detector 165. Further, a split or crack will cause scattering of light and this is detected by further detector 170. A row of four pairs of detectors may be provided to cover the length of the capsule Figs. 15, 16 (not shown). The end viewing systems are provided with Y-shaped apertures on the masks, the normal position of the image of a glare line being central between the arms of the Y. The detector is located behind one arm of the Y. Detectors are suitably edge-contact silicon photo-voltaic cells. Operation. Capsules delivered from a hopper 10 are delivered in cap down position from buckets 15 to the step-motion wheel arrangement at LOAD station. Each capsule is spun a number of times at the fixed inspection position and is reject or accept by air pressure at the appropriate location in dependence on the evaluation of the photodetector outputs.
Patent GB-1201376-A (GB)
Title: Method and apparatus of visual comparison of information
IPC: H05B33/12
Filed: 1967-09-28
Abstract: 1,201,376. Electroluminescence. XEROX CORP. 28 Sept., 1967 [29 Sept., 1966], No. 44130/67. Heading C4S. An imaging system comprises a display panel 20 including a plurality of spaced electrodes 22, a layer of electroluminescent material 24 and a layer of variable impedance material 25, means 28 for producing a first image for storage on the panel and means. 29 for superimposing a non- stored image on the panel without affecting the first image so that the two images can be viewed simultaneously. The panel may be transparent to allow viewing from either side and electroluminescent material may cover only the electrodes. The variable impedance layer may be a field effect semi-conductor on which a charge pattern is placed; alternatively the layer is uniformly charged and the pattern produced by removing charge, for example with a light beam if the material is also photoconductive. To ensure that a charge pattern is retained an insulating layer may be deposited over layer 25 or the material may be doped to provide a PN junction. When layer 25 is photoconductive its impedance is varied by incident radiation and the pattern is retained for a time dependent on the decay properties of the material. When layer 25 is ferroelectric a plurality of electrodes are disposed on its outer surface and D.C. voltage applied by an electron gun or corona discharge to vary its impedance. The second image is optically projected on to the screen. The first image may be viewed and modified and then stored. The electroluminescent material is Mn or Cu activated ZnS mixed with an epoxy or P.V.C. resin binder. The transparent substrate 23 is of glass or plastics material upon which transparent SnO electrodes are deposited from the reaction of stannic acid, water and methanol through a mask. The field effect semi-conductor may be Zn, Pb or Cd oxide or CdS, the ZnO may be dye sensitized with Rose Bengal, Eosin Y, Erythrosin or Fluorescein. Ferro-electric Rochelle salt and photoconductive CdSe, Se and Se alloys containing As or Te are referred to. The variable impedance material may contain dyes, sensitizers and activators.
Patent GB-1009081-A (GB)
Title: Improvements in or relating to electric pulse counting circuits
Inventor: LESLIE WILLIAM HENDERSON PATER
IPC: H03K21/00
Filed: 1960-12-23
Abstract: 1,009,081. Counters; electric selective signalling. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Dec. 21, 1961 [Dec. 23, 1960], No. 44220/60. Headings G4A and G4H. An electric pulse counter with the two inputs for receiving simultaneously applied pulse trains includes means for examining the time relationship between pulses on the two said inputs and means for modifying the corresponding signal input if two of said pulses are closer than a predetermined minimum. Simultaneous add and subtract inputs, Fig. 1.-The add and subtract pulses are applied respectively at A and B and are normally applied over leads a 2 , b 2  to opposite sides of the first stage of a binary or binarycoded decimal cascade counter. If, however, two pulses coincide or are very closely spaced then pulse coincidence circuit PCC suppresses them. PCC comprises add and subtract gates WGA, WGB, Fig. 2, which pass add and subtract pulses with appropriate delay at DRA, DRB, to gates IGA, IGB and so to the add and subtract sides of the counter. WGA, WGB also feed coincidence gate CTG which responds to overlapping or too-close a spacing to cause IWG to close gates IGA, IGB so catching and suppressing the pair of pulses. Counter, Fig. 3.-The add and subtract pulses on leads a2, b2 each reverse the first stage BU1. They also feed appropriate carryforward gates CFG/A1 and CFG/B1 controlled respectively by the 1 and 0 outputs from the first stage. Similar arrangements exist for subsequent stages. Pulse delays PD ensure that the associated carry-forward gates are not altered until the applied add or subtract pulse has ended. Decade control circuit DCC, Figs. 1 and 4.- The decimal counter operates in excess-3 code, forward resetting and carry being effected through gate AGA and over lead a3, reverse resetting and carry through AGB and b3. Counter-empty control circuit CEC, Fig. 1, senses the simultaneous presence of zero from each decade stage of the counter to inhibit IGB, Fig. 2, to suppress further subtract pulses. Similarly counter-full control CFC senses nines from all stages to suppress add pulses. Binary-analogue circuit.-Each binary stage is connected through a weighted resistor and a Zener diode to the base of transistor T15 feeding an emitter-follower T16.
Patent GB-1440565-A (GB)
Title: Subermsible pump installations
IPC: F04D29/60
Filed: 1972-09-26
Abstract: 1440565 Centrifugal pumps CLAESSEN & CO Ltd 25 Sept 1973 [26 Sept 1972] 44468/72 Heading F1C A submersible pump installation comprises a tubular casing 1 fixed to the bottom of a sump, a discharge tube connected to a peripheral outlet 2 of the casing, a centrifugal pump unit having a motor 25, impeller 26 and resilient seals 30, 34 the unit being movable into the casing 1 along a pair of tubular rails (4), 5 so that when the pump is in its lowermost (i.e. operating) position liquid is drawn in from the bottom of the sump through an opening 28 to a chamber 36 formed by the casing 1 and the resilient seals 30, 34, and discharges into the discharge tube. The pump unit is raised and lowered by a winch 13, Fig. 2 (not shown). The guide rails may be extended by telescopic tubes (8, 9) and locked by a strut (10).