baber/WOPTO huggingface dataset:
Patent GB-1337266-A (GB)
Title: Vulcanization retarders
IPC: C07C67/00
Filed: 1970-11-16
Abstract: 1337266 Vulcanization retarders BAYER AG 16 Nov 1970 [15 Nov 1969] 54385/70 Heading C3E [Also in Division C2] A vulcanization process comprises incorporating a substituted trihalomethyl sulphenyl sulphonamide of the formula  in which R represents an alkyl radical optionally substituted by chlorine, a cycloalkyl radical, an aryl radical optionally substituted by at least one alkyl group and/or chlorine atom, an aralkyl radical or a dialkylamino group, R 1  represents an aryl radical optionally substituted by at least one alkyl group and/or chlorine atom, and X represents chlorine or fluorine, as a vulcanization retarder, into a natural and/or synthetic rubber mixture. The vulcanization retarder may be incorporated in an amount 0À5-5%, in particular 0À1-1À5%, based on the weight of rubber. Examples refer to the use, as vulcanization retarders, of N-phenyl-N-(trichloromethylsulphenyl) - methylsulphonamide, N - phenyl - N - (trichloromethylsulphenyl)- chloromethylsulphonamide, N - phenyl - N- (trichloromethylsulphenyl) - benzenesulphonamide, N - o - tolyl - N - (trichloromethylsulphonyl) - dimethylsulphamide, N - phenyl- N - (fluorodichloromethylsulphenyl)- benzenesulphonamide.
Patent GB-1213475-A (GB)
Title: Storage of bulk materials
IPC: B65G69/10
Filed: 1967-11-30
Abstract: 1,213,475. Piling material. SOC. FIVES LILLE-CAIL. 30 Nov., 1967 [8 Dec., 1966], No. 54514/67. Heading B8E. To ensure that material recovered from a pile by a conventional inclined scraping device is homogenized the heap is formed of layers so that the materials of the different layers do not fall down over the lower layers at the heap end at which recovery is started but are caused to fall over the lower layers at the terminal end of the heap. The front end is formed by starting each successive layer further back in line with the inclined plane on which the recovery device operates while the terminal end is formed by progressively extending depositing in each layer or increasing the dwell of the depositing device at the terminal end in each successive layer.
Patent GB-1167256-A (GB)
Title: Improvements in or relating to Fire Curtain Hoists
Inventor: RAE R V
IPC: A63J1/02
Filed: 1967-12-01
Abstract: 1,167,256. Winch brakes. MOLE RICHARSON (ENGLAND) Ltd. 9 Oct., 1968 [1 Dec., 1967], No. 54759/67. Heading B8B. [Also in Division F2] A hoist for a fire curtain includes an hydraulic buffer arrangement (shown) for progressively braking the descent of the curtain once a hoist drum brake is released, but not braking the ascent of the curtain. A pump driven by the hoist drum supplies fluid to a bore 12 within a valve unit 10 which is mounted in a fluid supply tank 11, the fluid arriving from the pump through a conduit 9a and returning thereto through a conduit 9b during curtain descent, and in the reverse direction during curtain ascent. During ascent, the fluid passes from conduit 9b to conduit 9a via an aperture 13a in a rotatable arrester valve 13, the fluid also being allowed to flow through bores 14 into the tank 11 and from the tank through a non-return valve 21 into the bore 12 downstream of the aperture 13a. During descent of the curtain, the rotation of the arrester valve 13 via a nut and screw arrangement 17, 18 operated by a drive from the hoist drum causes fluid flow from conduit 9a to 9b to be increasingly restricted as the curtain lowers. Eventually the fluid flow from the bore 12 is governed only by an adjustable bleed valve 15 incorporating a pressure relief spring 16, whereupon the pump return conduit 9b, is supplied with fluid entirely from the tank via bores 14.
Patent GB-1435409-A (GB)
Title: Signalling apparatus for ships
IPC: B63B45/00
Filed: 1974-12-19
Abstract: 1435409 Signalling-apparatus KOCKUMS MEKANISKA VERKSTADS AB 19 Dec 1974 [4 Jan 1974] 54884/74 Heading G4F A known ship's signalling apparatus includes an audible and/or visual device 1, a current source 2, a relay OR, a relay HR, a motor M driving a cam-switch coder 6 and a switch device (5) Figs. 1 and 3 (neither shown) consisting of switches at suitable points throughout the switch for manual signalling and necessitating a three-wire line. According to the invention a two-wire line only is necessary if a switch device 13 and a third relay AR are provided. Further relays and switch devices may be added to permit operation of a device 1 which contains a group of several generators of differing characteristics, e.g. intensity and/or pitch, Fig. 6 (not shown).
Patent GB-1378599-A (GB)
Title: Polyurethane ureas
IPC: C07C67/00
Filed: 1972-12-05
Abstract: 1378599 Polyurethane ureas BAYER AG 5 Dec 1972 [7 Dec 1971] 54975/73 Divided out of 1378598 Heading C3R Polyurethane ureas are prepared by reacting a polyisocyanate, a compound containing active hydrogen atoms and a polyamine of the formula wherein B is either a hydrogen atom or a group of the formula R is a saturated or unsaturated C 1-18  aliphatic group, a C 3-10  cycloalkyl group, a C 7-11  aralkyl group, a C 6-10  aryl group or a group of formula -R 3 -O-B, R 1 , R 2  and R 3  which may be the same or different each represent a C 2-30  alkylene radical which may be interrupted by oxygen atoms and in which at least one of the B groups is not hydrogen. Cellular products may be prepared by incorporating a blowing agent in the reaction mixture. The polyamines may be prepared by reacting amino alcohols with an equivalent amount or less of isatoic acid anhydride. In examples the polyamines used are N-methyl-diethanolamine dianthranilate; triethanolamine trianthranilate; and a mixture of the previous two. Preferably the compound containing active hydrogen atoms is a polyether in which at least 10% of the hydroxyl groups present are primary OH groups. Conventional polyisocyanates may be used including solutions of polyisocyanates containing biuret, allophanate, urethane or isocyanurate groups in polyisocyanates free from such groups. Catalysts, emulsifiers and flame-retardants may also be included in the reaction mixture.
Patent GB-1275698-A (GB)
Title: Process for reducing the concentration of 2-chlorobutadiene-1(1,3) in 1,2-dichloroethane recovered in the incomplete thermal cracking into vinyl chloride
Inventor: WIRTZ PETER
IPC: C07C19/045
Filed: 1970-11-19
Abstract: 1275698 Purifying 1 ,2-dichloroethane KNAPSACK AG 19 Nov 1970 [26 Nov 1969] 55069/70 Heading C2C 1,2-Dichloroethane recovered in the incomplete thermal cracking of 1,2-dichloroethane into vinyl chloride and being contaminated with low boilers boiling below 83À7 C. (760 mm. Hg) and highboilers boiling higher than 83À7 C., has the concentration of 2-chlorobutadiene- (1,3) low boiler therein reduced, by transformation of the 2-chlorobutadiene-(1,3) into a high boiler contaminant by: distillatively freeing the 1,2-dichloroethane from the low boiler contaminants therein in a low boiler column; continuously withdrawing all or a portion of the low boiler contaminants concentrating near the head of said low boiler column; treating the low boiler concentrate withdrawn from the said low boiler column with gaseous chlorine at 10- 120 C. under 1-3 atmospheres absolute, with irradiation of U.V. and/or visible light in the absence of catalysts, and recycling the chlorinetreated low boiler concentrate to the said low boiler column; continuously delivering material accumulating in the base of the said low boiler column from the low boiler column to a high boiler column; and distilling off pure dichloroethane from the high boiler contaminants in the said high boiler column.
Patent GB-1100780-A (GB)
Title: Improvements in or relating to the diffusion of doping substances into semiconductor crystals
IPC: H01L21/285
Filed: 1966-12-12
Abstract: 1,100,780. Semi-conductor devices. SIEMENS A.G. 12 Dec., 1966 [13 Dec., 1965], No. 55471/66. Heading HlK. A process for doping a semi-conductor crystal having an apertured masking layer thereon comprises the steps of depositing from the gas phase on to at least the part of the surface of the crystal which is exposed through the aperture a layer of semi-conductor material containing the doping substance, and thereafter causing the doping substance to diffuse into the exposed surface of the crystal. The deposited layer is preferably of the same material as the crystal. In the preferred embodiment an SiO 2  masking layer is grown by thermal oxidation on the surface of a silicon crystal, a window is etched in the layer, and a highly doped silicon layer is deposited from a reaction gas comprising SiHCl 3 , hydrogen and the doping substance, the latter being Ga, In, P, Sb, As or B. The doping substance is then diffused into the crystal through the window, the masking layer being at least ten times more effective in this process than when the impurity is diffused directly from the gas phase. The deposited silicon layer may be removed by etching with hydrogen and HCI, or left in place to provide a contact to the crystal. The crystal may alternatively consist of germanium.
Patent GB-1494640-A (GB)
Title: Image-forming on light-sensitive element containing a quinone diazide
IPC: G03F7/022
Filed: 1974-12-24
Abstract: 1494640 o-Quinone diazide-containing layers FUJI PHOTO FILM CO Ltd 24 Dec 1974 55829/74 Heading G2C A process of forming an image comprises (a) imagewise exposing to active radiation a lightsensitive element comprising a support having thereon a light-sensitive layer comprising (i) an o-quinone diazide compound and (ii) a hydroxy compound either with no binder or together with (iii) a binder consisting of a copolymer of styrene and maleic anhydride, of styrene and acrylic acid or of methacrylic acid and methyl methacrylate, (b) heating the light-sensitive layer simultaneously with or after the imagewise exposure so as to render insoluble in alkaline solution the exposed areas of the layer, (c) irradiating at least the imagewise unexposed areas of the light-sensitive layer with active radiation so as to render the unexposed areas alkali-soluble, and (d) developing the lightsensitive layer to remove the unexposed areas by treatment with an alkaline solution. The o-quinone diazide compound can be an ester of naphthoquinone-1,2-diazido-5-sulphonic acid with a polyhydroxy compound, including poly-(hydroxyphenyl) from acetone and pyrogallol. Suitable hydroxy compounds are phenol- and cresolformaldehyde novolak resins, shellac resins, bis-  phenol A, pyrogallol and triethanolamine. Pigments and dyes may also be present in the layer. If the heating step is omitted an image of the positive-positive type is produced (instead of the negative-positive type obtained by the method described) from the same type of light-sensitive element.
Patent GB-1194747-A (GB)
Title: Improvements in, and relating to a Heat Exchanger
IPC: F28F1/04
Filed: 1967-12-14
Abstract: 1,194,747. Tubular heat exchangers. STORK & CO'S APPARATENFABRIEK N.V. GEB. 14 Dec., 1967 [19 Dec., 1966], No. 56863/67. Heading F4S. In a variable capacity heat exchanger particularly for use in sterilizing or pasteurizing and comprising two concentric helically wound inner and outer tubes 2, 4 respectively, milk supplied to the lower end 1 of the inner tube 2 is heated by steam passed in counter flow downwardly through the outer tube 4. A by-pass 7 interconnects spaced points 8, 9 on the surface of the outer tube 4 with the steam discharge conduit 5. Valves 10, 11 are provided which when turned off isolate the outer tube sections 4<SP>1</SP>, 4<SP>11</SP> respectively so as to reduce the capacity of the heat exchanger as required; the sections 4<SP>1</SP>, 4<SP>11</SP> fill with condensate. A condenser 12 is provided in the discharge conduit 5. An alternative form of heat exchanger tube, shown in Fig. 2, is zig-zag in shape, extends in a single plane and has the fluid flow passages provided by two parallel hollow spaces 13, 14 separated by a wall 15.
Patent GB-1370789-A (GB)
Title: Four-stroke internal combustion engines
IPC: F02B3/00
Filed: 1971-12-08
Abstract: 1370789 I C engine valve timing L ELSBETT 8 Dec 1971 [10 Dec 1970] 56901/71 Heading F1B A multi-cylinder four-stroke air compressing engine has the inlet passages 7, which induce swirl in the air in the cylinders, connected in groups of at least three passages to a common intake pipe 10 and the inlet and exhaust valves of each cylinder are operated such that both valves are closed at T.D.C. of the respective piston and the exhaust valve, which is open on the exhaust stroke, is also opened before the end of the induction stroke with the inlet valve open and closed with the inlet valve. The pistons have combustion chambers in the form of bodies of revolution and the induction periods of the cylinders 1, 2, 3 and 4, 5, 6 connected to a common pipe 10 do not overlap, e.g. a firing interval of 240 degrees crank angle is provided. The common pipes 10 may be connected by a pressure equalizing chamber 11 which is connected by a pipe 12 to an air filter. The cylinder groups may have their exhaust passages 9 connected to respective common exhaust pipes 13 leading to a pressure equalizing chamber 14 or respective pressure equalizing chambers. The intake pipe 10 may have a diameter to length ratio of 1:8 to 1:10 and it may be provided with a throttle valve 26 which is manually or automatically operated on engine idling to reduce the swirl in the engine cylinders and cause exhaust gas to flow back into the cylinder on the induction stroke through the open exhaust valve. Respective valves 26 may be arranged in the inlet passages 7. The inlet valve of each cylinder opens about 20 degrees crank angle after T.D.C. when the pressures in the intake system and cylinder are equal and the exhaust valve opens on the induction stroke when the pressures in the intake and exhaust systems are equal, both valves closing approximately 20 to 40 degrees after B.D.C. before the intake system pressure falls below the exhaust system pressure. The exhaust valve opens before B.D.C. and closes approximately 20 to 30 degrees crank angle before T.D.C. on the exhaust stroke.
Patent GB-1366635-A (GB)
Title: Elevating platform
IPC: B66F11/04
Filed: 1970-12-02
Abstract: 1366635 Luffing boom apparatus for supporting workmen J M HARRISON 2 March 1972 [2 Dec 1970] 57172/70 Heading B8H A workman's cage 1 is maintained upright at the outer end of a luffing boom, consisting of a telescopic portion 4 pivotally mounted on a portion 2, by means of an hydraulic system. As shown, double-acting hydraulically-interconnected rams 21, 22 are pivotally connected between the boom section 4 and a pivoted double-arm lever 19 and the cage 1, respectively. Similarly, interconnected rams 26, 27 are pivoted between the boom section 2 and the lever 19 and the base 3, respectively. The arrangement is such that on luffing either or both boom sections, by means of further rams (not shown), the rams maintain the cage upright.  The boom assembly may be slewably mounted on the roof of a van, Fig. 2 (not shown), or on the back of a lorry, Fig. 3 (not shown). The boom section 2 may be luffed beyond the upright position to allow the section 4 to extend downwardly to a position below the base 3.
Patent GB-1450059-A (GB)
Title: Prepayment time switches
IPC: G07F9/10
Filed: 1972-12-12
Abstract: 1450059 Solenoid-controlled lock UNITED GAS INDUSTRIES LTD 4 Dec 1973 [12 Dec 1972] 57302/72 Heading E2A [Also in Division G4] A prepayment meter 10 is connected in circuit with a solenoid-controlled lock to control access to the interior of a deep freeze cabinet, refrigerator, or drinks cooler. The prepayment meter operates a solenoid 23 to withdraw armature 22 whereby a manuallyoperable push button 20 may be depressed to release pivoted latch 14 so that the lid 13 of the cabinet may be opened. In a second embodiment, the push button closes an electric switch in series with the prepayment meter and solenoid, and the armature 22 directly engages the latch to pivot it from locking engagement with the lid.
Patent GB-1185565-A (GB)
Title: Improvements relating to Perfluorinated Acyl Fluorides
Inventor: PATTISON DEXTER BRAYTON
IPC: C07C51/58
Filed: 1968-03-06
Abstract: 1,185,565. Perfluorinated acyl fluorides. E. I. DU PONT DE NEMOURS & CO. 6 March, 1968, No. 57374/68. Divided out of 1,185,563. Heading C2C. The invention, comprises compounds of the general formula where n represents 0, 1 or 2. They may be prepared by reacting caesium perfluorophenoxide or potassium perfluorophenoxide with hexafluoropropylene epoxide in an inert polar solvent.
Patent GB-1278118-A (GB)
Title: Devices for hanging articles from doors
Inventor: POUPARD MAURICE ALBERT
IPC: A47G25/06
Filed: 1969-11-28
Abstract: 1278118 Hooks D E E DOWLING K L DOWLING and B W DOWLING [trading as H W DOWLING & SONS] 15 Dec 1970 [28 Nov 1969] 58289/69 Heading E2A A device for hanging articles from a door has a rectangular flat portion 10, having countersunk holes 11 therein, a tapering flat portion 12 which is at right angles to the flat portion 10, and has a hook portion 13 formed at an end of the flat portion 12. The device, which may be a single metal stamping, is secured to the doors by means of screws or nails. (For Figures see next page)
Patent GB-1155700-A (GB)
Title: Rotary-Molecular Vacuum Pump
IPC: F04D19/04
Filed: 1967-12-29
Abstract: 1,155,700. Making bladed rotors and stators. ARTHUR PFEIFFER HOCHVAKUUMTECHNIK G.m.b.H. 29 Dec., 1967 [30 Dec., 1966], No. 59149/67. Heading B3A. [Also in Division F1] In making a rotor or stator disc for a molecular vacuum pump, each blade is formed from a sheet metal blank, Fig. 4, by bending the blank at right angles along lines A, B, C, D and F and by twisting along line E. Thus, the root portion 7 assumes a generally U-shaped configuration, and the tip of the blade is formed with an integral shroud section which on assembly of the blade to the rotor ring 2, 3, Fig. 1, or to the stator ring 14, 15, extends circumferentially of the ring into overlapping relationship with a corresponding shroud section of an adjacent blade for subsequent spot welding thereto. The U-shaped root portion is sandwiched between the parts 2, 3 of the rotor ring or the parts 14, 15 of the stator ring, the parts 3, 15 being secured to the parts 2, 14 by swaged or beaded flanges 11, 16.
Patent GB-1278185-A (GB)
Title: Improvements in or relating to delay lines
Inventor: MADER HEINZ BERNARD
IPC: H03H19/00
Filed: 1970-12-17
Abstract: 1278185 Active delay networks; transistor gating circuits STANDARD TELEPHONES & CABLES Ltd 17 Dec 1970 59922/70 Headings H3T and H3U An analogue delay network in which the signal to be delayed is sampled 2n times in a predetermined period comprises: two sets of n capacitive storage elements to which odd and even samples are fed respectively by respective gates controlled by "1" and "0" outputs from a shift register; and further gates, also controlled by the shift register, for extracting the delayed outputs and feeding them to a common buffer amplifier. As described, the delay comprises two n-path networks with their inputs and outputs connected in parallel, Fig. 1 (not shown),  the switching signals for the second network running half a step behind those applied to the first. Each path, Fig. 2, includes an input gate T1 through which the input signal is fed to a shunt storage capacitor C1, a buffer amplifier T2, T3 and an output gate T4, T5 which reads out the voltage stored on the capacitor after the required delay interval. The necessary control signals for both n-path networks are derived from a common shift register, Fig. 4 (not shown) each stage of which provided two time displaced outputs. When the first output goes to its "1" gate T1 of an associated path of the first n-path network is opened to allow the storage capacitor to charge. After half-a-step delay, the second output goes to its "1" state to open the corresponding T1 gate of the other n-path network. After a delay of one step, the first output goes to its "0" state closing gate T1 and opening gate T4, T4 of the first mentioned path. At the same time the first output of the next stage is switched to its "1" state to open the T1 of the next path in the first network. Half-a-step later a similar sequence occurs in the other network. The outputs from each path in each network are then combined to give two signals, one from each network, which are then themselves combined to produce a single output. The whole unit may thus be considered as comprising a number of basic blocks, each consisting of two signal path  of the type shown in Fig. 2, one in each of the two networks, and the shift register stage which provides the necessary gate control signals. In integrated circuit form, the basic blocks are arranged in four groups of eighteen, Fig. 5 (not shown) each group having an output NOR gate which combines the outputs of the associated paths of the two networks respectively to provide two output signals. The first and second outputs of each group are then applied to respective NOR gates (A, B) and the outputs from these two gates subsequently summed. The NOR gates, Fig. 3 (not shown), comprise a number of F.E.T.'s connected in parallel, with a further F.E.T. connected as a load.
Patent GB-1358710-A (GB)
Title: Method for manufacturing foamed mouldings of polystyrene-series  resins
IPC: B29C33/04
Filed: 1971-12-29
Abstract: 1358710 Moulding foamed styrene resin articles DENKI KAGAKU KOGYO KK 29 Dec 1971 [29 Dec 1970] 60424/71 Heading B5A In a method of producing foamed styrene resin articles, a two part rotatable mould is used which has an interstice, at the joint of the two parts, allowing passage therethrough of water and air but not of the resin : in use the filled mould is immersed and rotated in heated water, the water flowing into the mould to heat and expand the resin to form the article. Articles mentioned are a picture frame and a chair. The resin may be polystyrene, styrene-methyl methacrylate copolymer, or acrylonitrile-butadiene-styrene terpolymer. The temperature of the water is varied depending on the polymer used, and if necessary a salt may be added to elevate its boiling point. The inclination of the axis of rotation is varied between horizontal and vertical to ensure that no air pockets exist in the mould.
Patent GB-1361688-A (GB)
Title: Electrophotographic process
IPC: G03G15/05
Filed: 1971-12-29
Abstract: 1361688 Electro-photographic processes MITA INDUSTRIAL CO Ltd 29 Dec 1971 [29 Dec 1970] 60529/71 Heading G2H [Also in Division H1] An electro-photographic process utilizes a member comprising a conductive base, a photoconductive layer and a surface insulating layer (optionally with an intermediate insulating layer disposed within the photo-conductive layer or between the photo-conductive layer and the conductive base) and comprises: (a) uniformly electrostatically charging the surface insulating layer using a D. C. corona discharge (b) imagewise exposing the surface and simultaneously (or immediately thereafter) uniformly electrostatically charging the surface with an A. C. corona discharge of asymmetric waveform, the major component of the waveform being of the opposite polarity to that of the D. C. discharge (c) dissipating the electrostatic charge remaining at the interface between the surface insulating layer and the photo-conductive layer, by uniformly exposing the surface or by allowing sufficient time to elapse before developing. This produces an electrostatic latent image in which the non-imagewise exposed areas D bear charge 6' of the same polarity as that of the D. C. discharge and the exposed areas L bear charge 6" of the opposite polarity. This latent image may be developed with toner 6' t  charged to either polarity to produce a background-free positive or negative copy. Circuits for producing the asymmetric discharge are described Figs. 5-8 (not shown).