baber/WOPTO huggingface dataset:
Patent GB-538523-A (GB)
Abstract: 538,523. Schiff's bases. ALLEN & SONS, Ltd., S., and WEST, T. F. Feb. 1, 1940. No. 2005. [Class 2 (iii)] [Also in Group VI] Insecticidal preparations comprise a compound of the type of a Schiff's base and of the formula <SP>R1</SP> R2 # C = NR 3  in which R 1  and R  2  may be the same or different alkyl, cycloalkyl, alkenyl, aralkyl or aryl groups, or may form a closed methylene or polymethylene ring, and one but not both may be H, and R  3  may be an alkyl, cycloalkyl, alkenyl, aralkyl or aryl group or a substitution product thereof, together with a diluent. The said bases may be produced by the condensation of a long chain aliphatic terpenic aldehyde, e.g. citronellal or citral, with aniline, cyclohexylamine, monoethanolamine or other amine. An example describes the condensation of citronellal with aniline at a temperature not above 10‹ C. Other condensation products mentioned are those of isobutyraldehyde and cyclohexylamine, citral and monoethanolamine, citronellal and monoethanolamine, citronellal and cyclohexylamine. Specification 493,074 is referred to.
Patent GB-1127078-A (GB)
Title: Apparatus for electrolytically producing hydrogen and oxygen
Inventor: PROSKURYAKOV LEV MIKHAILOVICH
IPC: C25B9/17
Filed: 1965-12-21
Abstract: 1,127,078. Electrolytic production of oxygen and hydrogen. BASHKIRSKY NAUCHNO-ISSLEDOVATELSKY INSTITUT PO PERERABOTKI NEFTI Dec.21, 1965, No.54044/65. Heading C7B. An apparatus for producing hydrogen and oxygen by electrolysis of water comprises an electrolytic cell 1, the cell wall forming one electrode connected to a source of direct current; a bell-jar 3 arranged inside the cell wall, and communicating with an outlet 14 through a throttling device and, arranged inside said bell-jar a second electrode 5 and a float 10 which controls the operation of the throttling device to discharge gas from within the bell-jar when the pressure within the belljar exceeds the gas pressure in the space to which the bell-jar is connected via the outlet 14. In the form shown a reservoir of water 2 is situated above the cell, and connected thereto by a pipe 16. When the gas liberated at the electrode 1 reaches a pressure such as to lower the electrolyte below the lower end of the tube 16, gas will pass up and water down the tube, thus automatically maintaining the electrolyte at a given level in the cell. As the pressure of the gas, formed within the bell-jar increases the level of electrolyte drops lowering the float 10 to which is attached a needle 11, the raising and lowering of which closes and opens the opening 14 formed at the top of the tube 4, thereby opening the top of the tube 4, and allowing the gas within the bell-jar to be discharged, the pressure with the bell-jar then becoming lowered, the electrolyte level, and hence the float 10, and needle 11, rises and the needle 11 reseals the opening 14 in the tube 4, and pressure rebuilds up within the bell-jar. The cell may be surrounded by a heat-exchanger 23.
Patent GB-1335834-A (GB)
Title: Display devices using liquid crystals
IPC: G02F1/139
Filed: 1970-11-17
Abstract: 1335834 Modulating light NIPPON ELECTRIC CO Ltd 17 Nov 1970 [29 Nov 1969] 54672/70 Heading H4F [Also in Division C4] It is stated that in known devices wherein an electric field is applied across a cholesteric liquid crystal layer to change its colour, the optic axis of the crystal and the field direction are in substantial parallel alignment. When using a cholesteric crystal having a parallel component of electric susceptibility (i.e. in the plane of the molecules and molecular layers) greater than the transverse component (normal to the plane of the molecules and layers), if a D.C. field greater than a predetermined value is initially applied across the crystal (for a time depending on the actual field strength), the optic axis becomes aligned substantially perpendicularly to the field direction. The layer may remain in this alignment for a considerable period after the field ceases, and shows a reduction in response time, e.g. from 10 milliseconds to 1 millisecond, on application of a variable electric field thereacross. The crystal selectively transmits light of a wavelength determined by Bragg reflection from the helically arranged molecular layers, application of the variable electric field varying the pitch of the helix. When the optic axis and field direction are mutually orthogonal, the light may be directed from behind an observer into the crystal and Bragg reflected back to the observer, e.g. after transmission through two transparent electrodes, or by transmission through one electrode and a further reflection at a second electrode to traverse the cholesteric layer twice. As particularly described a 6 Á layer consisting of 42% cholesteryl oleyl carbonate, 30% cholesteryl chloride and 28% cholesteryl nonanoate is disposed between a transparent tin oxide electrode supported on a glass plate, and a coloured aluminium oxide film on an aluminium plate electrode for reflection. 18 volts D.C. is applied across the layer for 3 minutes and subsequently a variable or pulsed signal is applied. The colour of the layer changes continuously with signal amplitude being blue at OV, red at 260 V and giving selective reflection in the infra-red at higher amplitudes. The electric field may be obtained by applying mechanical stress to a piezoelectric element connected to the electrodes.
Patent GB-1189729-A (GB)
Title: Improvements in or relating to Fenders for Damping Mooring Shocks.
IPC: F16F1/50
Filed: 1967-11-30
Abstract: 1,189,729. Fenders. PNEUMATIQUES, CAOUTCHOUC MANUFACTURE ET PLASTIQUES KLEBER-COLOMBES. 30 Nov., 1967 [30 Nov., 1966], No. 54687/67. Heading B7S. A fender on a landing stage comprises a movable slab 3 resting on resilient rubber sandwiches 4 distributed between the movable slab and the fixed base 2 so as to form a supporting polygon. The slab 3 moves horizontally under the effect of mooring shocks in the direction of either of the arrows F, the sandwiches then operating in shear between the slab 3 and fixed base 2, returning the slab to its initial position when the stress finishes. The sandwiches support the movable part 3 in a stable manner and are subjected only to a continuous stress when at rest.
Patent GB-547923-A (GB)
Abstract: 547,923. α-Hydroxy-##-dimethyl-γ-butyrolactone. HOFFMANN-LA ROCHE & CO. AKT.-GES., F. May 2, 1941, No. 5746. Convention date, April 24, 1940. [Class 2 (iii)] In the process of preparing α-hydroxy-##- dimethyl-γ-butyrolactone by acting on the bisulphite compound of formisobutyraldol with a cyanide followed by hydrolysis of the resulting cyanhydrin, the addition of the hydrocyanic acid is effected at temperatures between 30‹- 70‹C. In an example an aqueous solution of sodium cyanide is added directly to the bisulphite compound of formisobutyraldol without cooling, when the formation of the cyanhydrin takes place with rise of temperature. The cyanhydrin is then removed and hydrolyzed to the required α-hydroxy-##-dimethyl-γ-butyrolactone.
Patent GB-1488389-A (GB)
Title: Plugs
IPC: F16B5/12
Filed: 1974-12-19
Abstract: 1488389 Screw sockets NIFCO Inc 19 Dec 1974 [20 Dec 1973] 55062/74 Heading F2H A one-piece plastics screw socket has a shank 1 with a head 3 at one end, a pair of opposed side faces of the shank having respective protuberances each of which diverges from and then converges with the shank with increasing distance from the head to form a shoulder 4, with the divergent portion 4a of each protuberance starting where the shank meets the underside of the head, and a corresponding pair of opposed side edges of the head having respective flanges 6 hinged thereto at 5, each flange 6 having a flap 8 hinged thereto at 9, the length of each flange 6 equalling the distance between its hinge 5 and the adjacent juncture of the head with the shank, and the distance between the hinge 5 and the adjacent shoulder 4, such that when the flanges 6 are folded to lie against the undersurface of the head, the flaps 8 are caused to diverge outwardly from the shank in the direction away from the head by the support of the corresponding portion 4a of a protuberance. The head 3 and shank 1 are both of square cross-section. A bore 2 with longitudinal grooves 2<SP>1</SP> is provided to receive a fixing screw 11. The flaps 8 retain the socket in a panel aperture 9 into which it has been pushed, later insertion of the screw 11 expanding the shank radially to secure the socket more firmly.
Patent GB-1322569-A (GB)
Title: Scraper-chain conveyors
IPC: B65G19/22
Filed: 1970-11-20
Abstract: 1322569 Scraper conveyers GEWERKSCHAFT EISENHUTTE WESTFALIA 20 Nov 1970 [27 June 1970] 55278/70 Heading B8A A scraper conveyer assembly comprises scraper elements 1 each having shaped recesses 22, 22<SP>1</SP> for receiving horizontal chain links 5 which are also engaged by depending lugs 4, 4<SP>1</SP> of the element 1. For supporting each element 1 on the base of a conveyer channel a bracket 6 is secured to the element by bolts 12, 12<SP>1</SP>. The lower portions 18 of the bracket form scraping edges which slide along the channel base.
Patent GB-1119140-A (GB)
Title: Improvements in thermoplastic photoconductors
Inventor: AFTERGUT SIEGFRIED
IPC: G03G5/07
Filed: 1965-09-22
Abstract: Photoconductive thermoplastic resins are prepared by reaction, at elevated temperature and in the absence of an epoxy resin hardener, between an epoxy resin and a hydroxy substituted quinone, e.g. alizarin or 2,5-dihydroxybenzoquinone. The epoxy resin is preferably solid having M.W. 2500-5000.
Patent GB-1496670-A (GB)
Title: Planing hulls
IPC: B63B1/08
Filed: 1974-12-23
Abstract: 1496670 Stern forms of planing hulls YAMAHA HATSUDOKI KK 23 Dec 1974 [29 Dec 1973 16 Oct 1974 (2)] 55412/74 Heading B7A To improve the water flow at the stern of a hull when planing and when travelling at lower speeds, a pair of recesses are provided one at each side of the hull above the bottom in the aft part of the hull. The recesses gradually come closer together towards the stern so that the submerged cross-sectional area of the hull decreases aftwards and in the region of the stern is less than 20% of the maximum between the fore and aft perpendiculars. In a preferred embodiment (Fig. 8) two recesses 51a, 51b have upper and lower surfaces 53a, 54a and 53b, 54b, the lower surfaces 54a, 54b terminating in an edge which is a continuation of the chine line of the hull 47a, 47b.
Patent GB-1497663-A (GB)
Title: Chemically modified clays and the production thereof
IPC: C09K3/00
Filed: 1974-12-23
Abstract: 1497663 Chemically modified clays H KOSCHE 23 Dec 1974 [22 Dec 1973]55457/74 Heading C1A [Also in Division D2] A clay, e.g. montmorillonite, is treated to improve its reactivity with chromogenous dyestuff precursors by subjecting it first to acid hydrolysis followed by washing to create vacant sites in its lattice structure and then treating it with a salt solution containing metal ions which are capable of forming intensely coloured complexes with nitrogen-containing dyestuff precursors to cause such ions to be introduced into the vacant sites. The metal ions used are preferably those having a specific weight exceeding 5, particularly transition metals or mixtures thereof. The most preferred metals are Cd, Zn, Ni, Co, Cr, Ag and Cu. Prolonged acid hydrolysis results in removal of aluminium which may be replaced by an element which is isomorphous with aluminium, e.g. chromium. The modified clay may be subjected to further treatment whereby hydrophobic and oleophilic groups are grafted into the lattice layers or on to the surface of the modified clay particles. The colourforming reaction may be performed by exposing the modified clay to a dye precursor, the dye being a chromogenic electron donor, in an oily solvent.
Patent GB-1451293-A (GB)
Title: Process for producing dodecanedioic acid dimethyl esters
IPC: C07B61/00
Filed: 1974-12-23
Abstract: 1451293 Dimethyl ester of dodecanedioic acid OKAMURA OIL MILL Ltd and S TSUTSUMI 23 Dec 1974 [24 Dec 1974] 55591/74 Heading C2C Dodecanedioic dimethyl ester is prepared by reacting cyclohexanone with methanol and hydrogen peroxide in the presence of an acid catalyst and water, dimerising the resultant methoxycyclohexyl peroxide in the presence of a ferrous salt and methanol, and separating the ester. 15 to 36 moles of methanol and 0À5 to 1À5 moles of hydrogen peroxide per mole of cyclohexanone are used in the first stage and at least 25 moles of methanol per mole of cyclohexanone are used in the second stage.
Patent GB-1097870-A (GB)
Title: Packing tray for bottles or like objects
Inventor: BAUNGAARD MOGENS
IPC: B65D81/133
Filed: 1966-12-13
Abstract: 1,097,870. Packing trays. M. B. PACKAGING A.S. Dec. 13, 1966, No. 55672/66. Heading B8P. Packing trays for bottles &c. have depressions 4 whose height is at least 1/7 of the diameter of the depression at the bottom thereof and the sides of each depression over the greater part 5 of their height are inclined at an angle of 15-75 with the plane of the tray, and the lower portions of said sides are substantially at right angles to the said plane. The trays may be of foam plastic and used in cartons &c. to support the ends of the bottles &c., or without cartons, the trays being held together with the bottles between them by string &c. The depressions may be bottomless and the sides may be a continuous curve 8 as shown dotted.
Patent GB-556804-A (GB)
Abstract: 556,804. Acetals. DU PONT DE NEMOURS & CO., E. I. Feb. 23, 1942, No. 2355. Convention date, Feb. 25, 1941. [Class 2 (iii)] Unsymmetrical acetals are produced by reacting an acetal with a glycol or monoalkyl or monoaryl ether thereof in the presence of an acid catalyst, then neutralising the catalyst the residue after separation of the unsymmetrical acetal being acidified and treated with acid catalyst to make the acidity equal to that in original reaction mixture, adding additional acetal and glycol or glycol ether, and repeating the reaction. Suitable initial materials are the acetals derived from formaldehyde, acetaldehyde, propionaldehyde, benzaldehyde and chloral with methyl, ethyl, propyl, butyl and isobutyl alcohols. In examples the initial materials are (1). and (2) glycol, formaldehyde and methanol with sulphuric acid, (3) glycol, methylal azeotrope with methanol with sulphuric acid, and (4) as in (3) but with copper sulphate as well as sulphuric acid. Specification 543,030 is referred to.
Patent GB-1448005-A (GB)
Title: Regenerative cycle differential output lamp
IPC: H01K1/14
Filed: 1973-12-04
Abstract: 1448005 Electric incandescent lamps GENERAL ELECTRIC CO 4 Dec 1973 [4 Dec 1972] 56147/73 Heading H1F A halogen cycle differential output lamp of the short-circuited connector type comprises an elongated envelope containing an axially extending differential output filament having separate and distinct segments, some of which are lit more brilliantly than others, and connector sections which do not themselves incandesce, and a filling consisting of an inert gas together with hydrogen and chlorine, the hydrogen being present in an amount which varies between up to 1À4 Î 10<SP>-7</SP> gram atoms per cc. of bulb volume for the minimum amount of chlorine and up to 7À0 x 10<SP>-7</SP> gram atoms per cc. for the maximum amount of chlorine and the chlorine being present in an amount which varies between a maximum of 13À5 Î 10<SP>-7</SP> gram atoms per cc. and a minimum which depends on the intended duty cycle of the lamp, the ratio in gram atoms of hydrogen to chlorine being less than or equal to 1. In a lamp intended to be operated in a duty cycle having an "off" time between 0 and 10 seconds the minimum amount of chlorine present is 2À7 Î 10<SP>-7</SP> gram atoms per cc. whereas in a lamp intended to be operated in a duty cycle having an "off" time between 10 and 28 seconds the minimum amount of chlorine is 5À4 x 10<SP>-7</SP> gram atoms per cc. The chlorine is preferably added in the form of carbon tetrachloride.
Patent GB-568104-A (GB)
Abstract: 568,104. Gas igniters. ROBINSON, G. July 26, 1944, No. 12125/43. [Class 75 (iii)] A pyrophoric igniter for gas burners comprises a steel 4 carried by a member 6 movable in a tubular casing 1 by a thumbpiece 7 against the resistance of a floating coil spring 8 so as when released to produce sparks at a spring-pressed flint 12 mounted in a tube 13 secured to the casing 1. The spring 8 is arranged in a recess in the member 6, the rear end of the spring resting against a stop 10 fixed to the casing 1. Two small holes 19 in the handle end of the casing form a gauge for the flint.
Patent GB-1334887-A (GB)
Title: Method of and apparatus for connecting parts of corrugated cardboard
IPC: B65B51/00
Filed: 1971-12-08
Abstract: 1334887 Riveting W BAHMULLER 8 Dec 1971 [11 Dec 1970] 57089/71 Heading B3U [Also in Division B5] Overlaid cardboard parts, e.g. 8, 9, are connected together by forcing a flowable plastics material through the overlaid parts to form a stem 12 having portions 14 extending laterally between the outer surfaces of the parts. In operation the parts 8, 9 are placed on a support 2 having an annular bulge 4 and a nozzle holder 1 having an annular bulge 3 is lowered on to the parts so as to depress an area 5 defined by the bulges 3 and 4. A spray nozzle 6, which is biased towards the parts, is then operated to force flowable plastics material through the parts to form the stem 12 having disc or bowl shaped portions 14 and head portions 13. A needle 15 may be provided in the nozzle to prepunch a hole in the parts. The cross-section of the stem 12 may be any desired shape, e.g. circular, cruciform or rectangular, depending on the shape of the nozzle. The plastics material may also be injected from both sides of the parts. Also two laterally spaced nozzles 6 can be provided with a support having an elongate bulge so that a single lengthened head portion 13 is formed between the two stems. Preferably the plastics material is a thermoplastic material which may be cooled by an air jet.
Patent GB-1202220-A (GB)
Title: Modular circuit package
IPC: H05K5/00
Filed: 1967-12-18
Abstract: 1,202,220. Circuit assemblies. POWERCUBE CORP. 18 Dec., 1967 [15 Feb., 1967], No. 57349/67. Heading H1R. [Also in Division H2] Electrical components are mounted on the walls of a housing, which walls are electrically and thermally conductive and electrically separated from one another except in the case where a component is connected therebetween. The modular housing 11 for a D.C.-A.C. converter, Fig. 5 (not shown), comprises trapezoidal side wall members 12-15 brazed to a baseplate 17 and provided with cooling fins 23. The vertical edge surfaces of the walls are bevelled e.g. 12a, 12b, 12c, 12d so that the edge surfaces of adjacent side walls lie in spaced parallel relationship and the wall units are joined together by thermally conductive, electrically insulating corner blocks 25 shaped as shown in Fig. 2. The lower central portion of the hollow housing is occupied by transformer T, the core sections 47, 48 of which are in surface contact with the inner surfaces of side walls 13, 15 for transferring heat to the side walls and dissipation therefrom. Transistors Q, Q 2  are positioned in internal recesses 12a and 14e in side walls 12, 14 and their housings are brazed or soldered to the walls to form an electrical connection thereto. Zener diodes Z1, Z2, each confined between a pair of cylindrical conductive metal terminals 55, are secured between stepped edge surfaces 12d, 15c of side walls 12, 15 and stepped edge surfaces 14c, 15d of side walls 14, 15 respectively. Resistor R 2  is soldered to stepped edge surface 13c of side wall 13. Other components such as diodes D 1 , D 2 , capacitors C 1 , C 2  and resistor R 1  are connected by their leads to the appropriate junctions in the circuit and the side walls 12-15 thus form part of the circuit connections. An insulating cover plate 16 is provided with openings for the passage of leads 21 which are soldered to grooves 22 of the side walls. The housing may be filled with epoxy resin. The side walls of the housing may be made of metal or of thermally conductive ceramic such as beryllia or alumina, coated with an electrically conductive metal film. If it is desired to use large semi-conductor components a hole may be bored completely through a side wall in which a component is mounted. If the base and cover plates are omitted cooling may be achieved by convection. The corner blocks 25 may be omitted and the housing held together by the electronic components mounted across the corners.
Patent GB-1370809-A (GB)
Title: Method of and apparatus for vacuum packaging
IPC: B65B31/02
Filed: 1971-12-10
Abstract: 1370809 Packaging machines W R GRACE & CO 10 Dec 1971 [14 Dec 1970] 57522/71 Heading B8C In a packaging machine, a bag 56 containing an article, e.g. a fowl 61, is evacuated in a vacuum chamber 39 part of the wall of which comprises a diaphragm 24 which, on evacuation of the chamber 39, distends into the chamber to engage the bagged fowl 61 to expel air from the bag 56 and to shape the fowl 61. The diaphragm 24 is carried by a hood (12, Fig. 1) lowered by piston and cylinder assemblies 19, 20 on to an endless conveyer 13 to form the chamber 39. The diaphragm 24 also forms one wall of a second chamber 25 connected to the chamber 39 by a restricted bleed line 27 containing a valve 28 which can be adjusted to control the pressure difference between the chambers 25, 39. Bag supports 15 are carried by the conveyer 13 and have slotted end pieces 117, 118 which receive the gathered neck 54 of the bag. In operation, a striker 10 carried on the support 15 engages a switch 23 which operates a valve 40 to vent the cylinders 20 so that the hood (12) slowly drops. The striker 10 then engages a second switch 41 to engage a brake 100 and disengage a clutch 31 connecting a drive motor 30 to the conveyer 13. The conveyer 13 thus stops so that two supports 15 are below the descending hood (12). As the hood descends an actuator 35 thereon engages a switch 42 to deenergize the motor 30, and when fully descended an actuator 36 engages a switch 45 so that a valve 46 in a line 16 is opened so as to evacuate the chamber 39 via a manifold 37 and an opening 21 in the conveyer 13. When the pressure in the chamber 39 drops to a predetermined level, a switch 48 causes a valve 51 to connect an assembly 11 to a compressed air line 52 so that the assembly 11 operates to place a clip around the bag neck 54. When the pressure in the assembly 11 reaches a predetermined value (indicating that the clip has been applied), a switch 57 causes the valve 51 to connect the assembly 11 to a vacuum line 26, and the valve 46 to vent the chamber 39. On the chamber 39 reaching atmospheric pressure, a switch 49 causes the valve 40 to connect the cylinders 19 to a pressure source to raise the hood (11). This thus raising causing the switch 42 to re-energize the motor 30 and a switch 60 to disengage the brake 100 and engage the clutch 31. The assembly 11 is carried by the hood and comprises a punch 62 connected to a piston 61 acted on by the pressure in a chamber 120 connected to the valve 51. A pivotable arm 71 carries an anvil 63 for closing the clip about a bag neck. As the hood is lowered, the neck 54 of the bag enters a slot 66 in the assembly 11 and a reciprocable rod 33 engages a stop 55 on the conveyer 13 to cause the arm 71 to pivot and close the end of the slot 66. When the hood is reused a spring 70 extends the rod 33 and thus pivots the arm 71 to open the end of the slot 66. Clips 72, are supplied to the slot 66 from a cylinder (80, Figs. 6 and 7) via a channel member (85). Alternatively (Fig. 9) the arm 71 is pivoted by a cylinder (121).