baber/WOPTO huggingface dataset:
Patent GB-1155745-A (GB)
Title: Improvement in Electrophotographic Materials
IPC: G03G5/07
Filed: 1966-09-07
Abstract: 1,155,745. Polycondensing aromatic dialdehydes. SOC. PER AZIONI FERRANIA. 7 Sept., 1966 [13 Sept., 1965], No. 40050/66. Headings C3P and C3R. [Also in Division H1] Polyesters are prepared by the condensation of aromatic dialdehydes in the presence of aluminium alkoxides. In specific examples terephthalic dialdehyde, terephthalaldehyde, 2,5-dimethyl terephthalaldehyde and a mixture of terephthalaldehyde and 4,5-dimethyl-isophthalaldehyde are polymerized in the presence of aluminium ethoxide under a nitrogen atmosphere. Other dialdehydes specified are 4,4<SP>1</SP>- diformyldiphenyl; 6 - methoxy - isophthalaldehyde; 4,6 - dimethoxy - isophthalaldehyde; 2,5 - dimethoxyisophthalaldehyde; 4,6 - dimethylisophthalaldehyde; 2,4 - diformylmethyl - phenyl - thioether and 2,6 - pyridine dialdehyde. The condensation is preferably effected at a temperature 15‹ to 20‹ C. higher than the melting point of the dialdehyde. Either bulk or solution polymerization techniques may be used.
Patent GB-1131265-A (GB)
Title: Improvements in or relating to acoustic wave devices
Inventor: ASH ERIC ALBERT
IPC: H03H9/145
Filed: 1966-09-08
Abstract: 1,131,265. Acoustic wave devices. STANDARD TELEPHONES & CABLES Ltd. 1 Sept., 1967 [8 Sept., 1966; 11 May, 1967], Nos. 40130/66 and 21943/67. Heading H3U. An acoustic wave device for propagating surface waves, i.e. waves having both longitudinal and shear mode components, comprises a body 2 of propagating medium, e.g. yttrium aluminium garnet, having a surface discontinuity to produce reflection of the surface wave without introducing mode conversion. The discontinuity may take the form of one or more slots 1, Fig. 1a, filled with a material 3 of different acoustic impedance. In another embodiment (Fig. lb, not shown) the discontinuity is formed by a semi-circular groove and this groove may be filled with a material of different acoustic impedance (Fig. 1c, not shown). In other embodiments (Figs. 1d, 1e, not shown) the discontinuity is formed by raised lips on the surface of the body 2, which lips may be formed by the material of the body itself or by material of a different acoustic impedance. Applications of the device functioning as a resonator, a filter, a power divider and a directional coupler are described with reference to Figs. 2-5 (not shown). In a further embodiment shown in the drawing filed with Provisional Specification 21943/67, a surface wave transmission path 1 is formed by parallel grooves 3, 4 in a propagating medium 2. The groove 4 has a circular portion 4a with a concentric groove 5 forming a resonator, the circumferential length of the resonator being equal to an integral number of wavelengths of the acoustic surface wave so that a standing wave exists therein. A transducer for imparting surface waves to the propagating medium 2 is described with reference to Fig. 6 (not shown), this transducer comprising evaporated cadmium sulphide layers on the surface of the medium, the layers being arranged in two arrays, one array producing the longitudinal mode components and the other the shear mode components.
Patent GB-1092317-A (GB)
Title: Plastics wall plug
IPC: F16B13/10
Filed: 1965-09-22
Abstract: 1,092,317. Wall-plugs. A. FISCHER. Sept. 22, 1965 [Sept. 29, 1964], No. 40421/65. Heading F2H. An expandible plastics wall plug comprises a longitudinal slot 12 extending from the forward end to the vicinity of the head, and a frustoconical bore 4 widening from the forward end. The external surface comprises teeth 5 and tongues 7 or bridge-pieces 7a. The wall thickness of the plug decreases and the teeth increase in height towards the forward end.
Patent GB-907875-A (GB)
Title: Printing elements and method of producing same
IPC: G03G9/00
Filed: 1958-12-16
Abstract: 907,875. Printing. AUSTRALIA, COMMONWEALTH OF. Dec. 16, 1958 [Dec. 17, 1957], No. 40588/58. Class 100 (2). [Also in Group XX]  A process for producing a printing element comprises treating the surface of one element 8 with a film of developer, forming an electrostatic image on a photo-conductive surface 2 of a second element 1, bringing the two surfaces into intimate contact to develop said electrostatic image by selectively transferring the developer from one surface to the other to produce respectively a positive image on one surface and a negative image on the other surface and then using either as a printing element or a resist. The printing element may be a block, an off-set plate or a stencil and the developer may comprise an oil or a resin suspended in a carrier liquid having a volume resistivity not less than 10<SP>10</SP> ohm-centimetre and a dielectric constant less than 3 and containing a pigment substance with a fixing agent to fix the pigment when the carrier liquid evaporates. Alternatively the carrier liquid contains a first pigment substance which has been precoated with a resin partly soluble in the carrier and second pigment substances also precoated to form a triggered developer, whereby on evaporation of the carrier, a pigment image, fixed by the resin, remains.
Patent GB-1326669-A (GB)
Title: Self-curing epoxy resins
IPC: C08G59/30
Filed: 1971-09-01
Abstract: 1326669 Epoxy resins containing urethane groups H KOELBEL 1 Sept 1971 [3 Sept 1970] 40823/71 Headings C3B and C3R Epoxy resins have the general formula in which R 1  represents the residue, after removal of two -NCO groups, of a diisocyanate and is inert towards epoxy groups, R 2  represents the residue, after removal of two -OH groups, of a dihydric phenol and is inert towards isocyanate and epoxy groups, R 3 , R 4 , X and Y represent radicals inert towards isocyanate and epoxy groups and X and Y may also represent valence bonds; n is > 0. The epoxy resins are prepared by reacting a dihydric phenol R 2 (OH) 2  with a diisocyanate R 1 (NCO) 2 . and an epoxy alcohol The molar ratio of dihydric phenol: diisocyanate: epoxy alcohol may be 1 : 2 : 2. In preferred materials R 3  may be H, methyl or phenyl, R 4  may be a bivalent aliphatic, cycloaliphatic or araliphatic radical, X may be a heteroatom, a valency bond or a hydrocarbon bridge optionally containing one or more heteroatoms or ester or urethane groups, Y may be a valence bond or a hydrocarbon bridge optionally containing one or more heteroatoms or ester or urethane groups and n may be > 5. A typical product may be obtained by reacting 2 moles of hexamethyleine diisocyanate with 1 mole of bisphenol A and 1 mole of epoxypropanol. The products may be cured by heating, e.g. at 80- 120‹ C. Uses.-Mouldings, coatings, impregnation. adhesives.
Patent GB-1073447-A (GB)
Title: Improvements in or relating to pyrido [4,3-b] indole derivatives
IPC: A61K31/00
Filed: 1964-10-07
Abstract: The invention comprises 6-methoxy-1-(3,4,5-trimethoxyphenyl) - 9H - pyrido [3,4-b] indole of the formula <FORM:1073447/C2/1> and acid addition salts thereof, and their preparation by reacting 5-methoxytryptamine with 3,4,5-trimethoxybenzoyl chloride to produce N - [2 - (5 - methoxyindol - 3 - yl) ethyl]- 3,4,5 - trimethoxybenzamide, cyclizing this in the presence of phosphorus pentoxide to give 3,4 - dihydro - 6 - methoxy - 1 - (3,4,5 - trimethoxyphenyl) - 9H - pyrido [3,4 - b] indole, dehydrogenating this at an elevated temperature in the presence of a palladium catalyst to produce 6 - methoxy - 1 - (3,4,5 - trimethoxyphenyl) - 9H - pyrido - [3,4 - b] - indole and, if desired, treating the free base with an acid to give the corresponding acid addition salt. Pharmaceutical compositions having depressant activity comprise a compound of the invention together with a pharmaceutically acceptable carrier.  The compositions may be formulated as tablets, capsules, elixirs and injectable solutions and suspensions.
Patent GB-1175949-A (GB)
Title: Servo Control System
Inventor: SMITH COLIN FRANCIS GREENING
IPC: G05D3/14
Filed: 1968-08-28
Abstract: 1,175,949. Automatic control of arcs. STANDARD TELEPHONES & CABLES Ltd. Aug. 28, 1968, No. 41145/68. Heading G3R. Apparatus for arc welding two edges of strip material together comprises a servomotor and amplifier controlled by signals developed in the welding circuit such that the standing, starting and running values of the weld current are controlled according to the type and thickness of the strip material being used. A resistance potentiometer 3, the slide of which is driven by a servomotor 2, is connected in the welding circuit to control the welding current and the physical characteristics of this potentiometer are individually designed to suit the strip material being welded. Before an arc is struck relay SR/1 and the relay controlling contacts RR/1; RR/2 are de-energized. A servo-amplifier 1 then receives a signal from a bias circuit B2 and the servomotor 2 operates to drive the slider of potentiometer 3 to the "low current" end. An arc is then struck by switching on the welding current source together with a high frequency starting circuit. When an arc is struck a photo-cell 4 sensitive to the presence of the arc causes energization of relay SR/1 which changes over contacts SR/1 so that the amplifier 1 now receives an input signal from a bias circuit B1 in opposition to that received from circuit B2 together with a voltage dependent upon the arc current which is developed across a resistor R17. The servomotor 2 then runs to position the slider of the potentiometer 3 until the input to the amplifier 1 becomes zero, velocity feedback being derived from a tachogenerator G. The high frequency starting supply is now switched off. Operation of a push button switch begins the welding process and also energizes a relay coil which operates contacts RR/1 and RR/2. Closure of RR/2 alters the bias supplied to the amplifier 1 from the circuit B1 whereupon the motor 2 drives the slider of the potentiometer 3 to a position to give the correct welding current value, the contacts RR/1 being optional so as to provide a large increase in the value of the welding current if desired. A tachogenerator 6 dependent on the speed of the welding operation provides a signal to make the welding current dependent on that speed and if desired a function generator 7 may be incorporated to provide any desired welding current function. When stopping the welding process the opposite sequence of events takes place.
Patent GB-836872-A (GB)
Title: Improvements in or relating to velocity modulation electron tubes
IPC: H01J25/12
Filed: 1956-06-12
Abstract: 836,872. Velocity modulated tubes. VARIAN ASSOCIATES. June 12, 1956 [June 14, 1955], No. 41159/58. Divided out of 836,871. Class 39(1). In a velocity modulation tube structure having a plurality of cavity resonators such as a cascade amplifier klystron used in radar, navigation beacons or in linear accelerator devices, the tubular structure of drift tubes 52 Fig. 2 and cavity resonators 2, 3 is provided with a plurality of transversely disposed strengthening plates 55 rigidly fixed thereto and a plurality of longitudinal strengthening rods 56 fixed to the plates 55 to provide a rigid integral structure. The plates 55 and rods 56 are of non magnetic stainless steel to prevent disturbance of the magnetic focusing field. Other aspects of the tube structure are described and claimed in Specifications 836,871 and 836,873.
Patent GB-949256-A (GB)
Title: Cholestane compounds
IPC: C07J75/00
Filed: 1961-11-17
Abstract: The invention comprises steroids of the formula: <FORM:0949256/C2/1> wherein R1 is an a - or b -OCO(CH2)nCOOM, -OCO(CH2)nNR2, -OCO(CH2)nNR2.HB, -OPO3M2, -OSO3M or -OCO(CH2)nX radical; R2 is a hydrogen atom; R3 is a =O; an a - or b -OH, an -OCOR or an -OCO(CH2)nX radical; n is 1, 2, 3, 4 or 5; R is hydrogen or C1-5 alkyl; X is halogen; M is a hydrogen atom, an alkali metal or one equivalent of an alkaline earth metal; and HB is a non-toxic mineral acid; with the proviso that R3 is not an acetate group when R1 is a chloroacetate group. Cholestane -3, 5, 6-triols and their esters can be prepared from cholesterol or its esters by oxidizing with a peracid or osmium tetroxide.  The oxidation product, if obtained in the form of an ester or of the 5, 6-epoxide, can be hydrolysed by an acid to give the 5, 6-glycol. The triols may be esterified by conventional methods.  Halo-acetic acid esters may be interconverted or may be converted to amino-acetic acid esters. Examples describe the preparation of the 3-hemisuccinate, 3-diethylaminoacetate, 3-chloroacetate, 3-iodoacetate, 3, 6-bis-chloroacetate, 3, 6-bis-iodoacetate, 3-hemisuccinate 6-formate, 3-hemisuccinate 6-acetate, 3-phosphate and 3-sulphate of cholestane -3b , 5a , 6b -triol, and alkali metal salts and acid-addition salts of some of these compounds. An intermediate in the preparation of the phosphate is the 3 b -phosphodichloride; and cholesterol 3-hemisuccinate is prepared from cholesterol and succinic anhydride. The preparation of other compounds of the above general formula, including ones where R1 may have the additional values of =O, a - or b -OH, -OCOR and OCOR4 (wherein R4 is C1-5 alkyl), R in -OCO(CH2)nNR2 may have the additional value of an acyl radical, R3 may have the additional values of -OCO(CH2)nNR2 (R having the extended definition given), -OCO(CH2)2NR2.HB, -OCO(CH2)nCOOM, -OSO3M and -OPO3M2; and R2 has the additional value of a C1-5 acyl radical, is also referred to.ALSO:Pharmaceutical compositions comprise a steroid of the formula <FORM:0949256/A5-A6/1> (wherein R1 and R3 represent = O or an a - or b -OH, -OCOR, -OCOOR4, -OCO(CH2)nX, -OCO(CH2)nNR52, -OCO(CH2)nNR2.HB, -OCO(CH2)nCOOM -OSO3M or -OPO3M2 radical, R is hydrogen or C1-5 alkyl, R4 is C1-5 alkyl, R5 is hydrogen, C1-5 alkyl or acyl, X is halogen, M is hydrogen, an alkali metal or one equivalent of an alkaline earth metal, HB is a non-toxic mineral acid, n is 1, 2, 3, 4 or 5 and R2 is hydrogen or an aliphatic acyl radical of at most 5 carbon atoms) and a solid pharmaceutical carrier or a sterile diluent.  They may be used for the treatment or prevention of atherosclerotic diseases.  Suitable forms include powders, tablets, pills, solutions, emulsions, injections and suspensions, which may contain emulsifying agents and flavouring agents.  A tablet containing cholestone-3b ,5a ,6b -triol 3,6-diformate is described.
Patent GB-1397600-A (GB)
Title: Method and briquette for nodulating cast iron
IPC: C21C1/10
Filed: 1972-09-07
Abstract: 1397600 Making S G iron R L RANKE 7 Sept 1972 [23 Sept 1971] 41529/72 Heading C7D Molten iron is poured into a container in which are ferruginous briquettes each weighing 2 to 10 oz. and containing 5 to 7 wt per cent Mg and 0À3 to 0À9% Ce, the balance preferably being finely divided iron, cast iron, or steel. The amount of briquettes should be such that the treated iron contains 0À03 to 0À07% Mg. In a preferred embodiment Ce is incorporated in the briquettes as oxyfluoride containing at least 37À5% CeO 2  and at least 22% fluoride. The briquettes may be held in position at the bottom of the treatment ladle by covering them with particulate steel.
Patent GB-1351790-A (GB)
Title: Lifting yoke for ships cranes
IPC: B66C1/10
Filed: 1971-09-08
Abstract: 1351790 Load lifting spreader bars HAGGLUND & SONER AB 8 Sept 1971 [10 Sept 1970] 41787/71 Heading B8H A spreader bar for use with a ship's crane consists of a body 5 telescopically supporting arms 6, 7 and provided with a runway 11 for at least one crab 12. Each arm 6, 7 and crab 12 is provided with a spreader bar 10 which is rotatable about a vertical axis and which is adapted to support a load engaging device, e.g. a gripper device for engaging paper rolls. The arms 6, 7 and the spreader bars 10 are lockable in their selected positions.
Patent GB-1121224-A (GB)
Title: Examination light
IPC: F21S2/00
Filed: 1966-09-19
Abstract: 1,121,224. Examination light. SUNBEAM LIGHTING CO. 19 Sept., 1966 [15 Oct.. 1965], No. 41792/66. Heading F4R. The light consists of a box-like housing 21 of moulded synthetic resin, closed at the front by a frame 22 having an opening with a protective guard 24 behind which is a window 23 of heat absorbing glass mounted on the front of a reflector 54 carried by fins 50 extending from a frame 41 mounted in the housing so as to provide cooling air spaces between the frame and the housing, and a high intensity lamp 43 carried by the frame. The frame has further fins, some of which (49) also serve to secure the frame to the walls of the housing. Louvres for the entry and escape of air are provided at the rear of the housing and around the frame 22. The reflector consists of three frusto-conical surfaces 56, 57, 58 of increasing angle, the smaller edges of the surfaces 56 and 57 being joined to the larger edges of the surfaces 57 and 58. An auxiliary reflector 62 having a surface generated by the arc of a circle, may be provided behind the reflector 58.
Patent GB-1486781-A (GB)
Title: Raw pneumatic tyre carcass and method of fabricating same
IPC: B29C48/12
Filed: 1974-09-26
Abstract: 1486781 Moulding tyres UNIROYAL 26 Sept 1974 [5 Oct 1973 28 Feb 1974] 41899/74 Heading B5A A raw tyre carcass to be shaped and vulcanized in a mould includes an uncured airimpervious liner 1 of thermoplastic material attached to the inner surface of the carcass and extending from bead to bead; parallel ribs 2 on the inner surface of the liner extend obliquely from bead to bead and provide passageways for the venting of fluid from between the liner and an inflatable bladder during the curing in the mould, the ribs being flattened by the smooth outer surface of the bladder to provide the liner with a smooth interior surface. The uncured liner may be thicker at the midcircumferential plane of the carcass to provide a cured liner of substantially uniform thickness. Such a liner may be produced by a pair of rolls, one smooth and the other having appropriately formed grooves in its periphery.
Patent GB-419693-A (GB)
Abstract: 419,693. Securing and retaining articles on shafts; shaft collars. AKT.- GES. VORM. SEIDEL & NAUMANN, 19, Hamburgerstrasse, Dresden, Germany. Dec. 28, 1933, No. 36492. Convention date, Jan. 10. [Class 80 (ii).] Axial, and if desired, rotary, movement of articles on shafts is prevented by a spring disc a which is received by an annular groove on the shaft. The width of the slot c is slightly less than the root diameter of the groove, and the elasticity of the disc is increased by slots k, l. For positively preventing relative rotary movement, the tongue i may be extended to engage a radial recess in the shaft and a pin m engages the disc and the article secured.
Patent GB-879633-A (GB)
Title: Improved ice-block release apparatus
IPC: B65H75/10
Filed: 1959-12-11
Abstract: 879,633. Ice making. GENERAL MOTORS CORPORATION. Dec. 11, 1959 [Jan. 8, 1959], No. 42175/59. Addition to 798,433. Class 29 The transverse walls 44 of the ice-tray of the parent Specification are extended above the rim 37 of the tray so that, when the tray rests inverted with its rim on supports formed on the side-walls of an ice-receiving receptacle, 65, the extensions of the transverse walls lie between abutments 71 formed in the supports and, when the receptacle cover 72 is swung down, a bar 77 thereon engages the inclined end 34 of the tray to move it along the supports so that the abutments 71 move the walls 44 to upright position to free the iceblocks which fall into the receptacle. The spacing of the abutments is greater than that of the walls 44 so that the latter are moved in succession to free the blocks in succession.
Patent GB-1479677-A (GB)
Title: Preparation of orthosilicic acid esters
IPC: C07F7/04
Filed: 1974-09-27
Abstract: 1479677 Orthosilicates of ether alcohols DYNAMIT NOBEL AG 27 Sept 1974 [2 Nov 1973] 42220/74 Heading C3S An ether-alcohol orthosilicate is prepared by reaction of particulate silicon, iron silicide, ferrosilicon, and/or any other silicon alloy containing at least 50 wt. per cent Si with the ether alcohol at 125-250 C. in the presence of an alkali metal salt of the ether alcohol and an amount of the ether-alcohol orthosilicate product of over 70 wt. per cent of the total liquid in the reaction mixture. The reaction rate is controllable by the rate of addition of the ether alcohol to the mixture. Preferably silicon is used, of at least 98% purity and particle size less than 50 Á, and the alkali metal alcoholate is 2-5 wt. per cent of the reaction mixture and formed in situ. In the examples, ca. 1 kg. of ether alcohol is added to 250 g. of 10 Á, 98% Si and 5-9 g. of sodium in 500 g. of the desired orthosilicate (obtained by transesterification) at 150-230 C. The ether alcohols used are the methyl, ethyl and butyl monoethers of ethylene glycol and the monoethyl ether of diethylene glycol.
Patent GB-1436125-A (GB)
Title: Floatable structure for use in fish farming
IPC: A01K61/60
Filed: 1972-09-12
Abstract: 1436125 Floating structure for fish farming R M BARGE 10 Sept 1973 [12 Sept 1972] 42252/72 Heading A1A A rectangular, square, hexagonal or circular floating structure for fish farming comprises imperforate walls and two opposed apertures adjacent each of which are provided two spaced channels for accommodating respective mesh screens each of which is independently capable of preventing fish from escaping from the associated aperture. The rectangular form shown comprises imperforate side and bottom walls formed from a single piece of plastics and suspended from bars 4. End frames 8 are each divided into two sections 12, 13 by a respective bar 11 and each section 12, 13 has parallel channels 14 to accommodate a respective mesh screen. Each end frame 8 comprises adjustably pivoted side walls 9, a bottom wall 10 to a top wall 12a and the dividing bar 11. The bars 4 are connected to beams 16 by upper and lower slats 7 which provide a walkway and a space for buoyant material or air filled pipes. Connections 20 between the bars 4 and beams 16 allow movement with the water. The structure is moored by ropes 22, many have end weed deflectors, be covered by a net and may be used in series.
Patent GB-1079990-A (GB)
Title: Improvements in and relating to macromolecular organic compounds
IPC: C08K5/3445
Filed: 1965-10-07
Abstract: Compositions comprise an organic macromolecular compound and as antistatic agent a minor proportion of at least one imidazoline compound of formula <FORM:1079990/C3/1> where R1 is C3- 26 alkyl. Specified macromolecular compounds are polymers of butadiene, vinyl acetate, olefinically unsaturated hydrocarbons, acrylic and methacrylic esters, acrylonitrile, vinyl acetals, vinyl carbazole and vinyl chloride; polyoxymethylene; polyterephthalates; polycarbonates; polyamides; polyurethanes and cellulose derivatives.  The imidazoline compound may be pentyl, octyl, decyl, undecyl, pentadecyl or heptadecyl imidazoline. The compositions may be used in the manufacture of shaped articles and coating composition, and examples describe compositions comprising polyethylene and (1) butyl and (5) undecyl imidazoline; (2) a polylactam and pentyl imidazoline; (3) polypropylene and octyl imidazoline; (4) a butadiene/styrene copolymer and decyl imidazoline; (6) polystyrene and pentadecyl imidazoline; (7) polyvinyl acetate and heptadecyl imidazoline; and (8) a polyoxymethylene resin and octadecyl imidazoline.