baber/WOPTO huggingface dataset:
Patent GB-847090-A (GB)
Title: Modified polyesters
IPC: C08G63/668
Filed: 1956-11-30
Abstract: Dye-receptive polymethylene terephthalates are made by effecting a polyesterification reaction between terephthalic acid or a dialkyl ester thereof and a polymethylene glycol of 2-10 carbon atoms in the presence of a chainterminating agent which is either (a) a monohydric polyether of formula: R-O[(CH2)mO]x(CH2)n-OH where R is an alkyl group containing 1-18 carbon atoms or an aryl group containing 6-10 carbon atoms, m and n are integers from 2-5 and x is a number sufficient to give the polyether a molecular weight of 500-5,000, or (b) a polyalkyl vinyl ether of molecular weight 500-5,000 with one terminal hydroxy group in which the alkyl group contains 1-4 carbon atoms.  The reaction mixture may also include a minor proportion of (c) sophthalic acid or a diester thereof, or (d) a chain-branching agent.  If reactant (d) is omitted, reactants (a) and (b) are used in an amount of 0,05 to 1,0 mole per cent. based on the dicarboxylic acid(s) or ester(s); otherwise the amount of reactant (d) may be increased up to 4,0 mole per cent.  Specified polyethers are polyethylene glycols, polypropylene glycols and polybutylene glycol, having one terminal methoxyethoxy, propoxy, butoxy or phenoxy group.  The polyalkyl vinyl ethers with a terminal hydroxyl group may be prepared by polymerization of the monomers in the presence of hydrogen peroxide.  The chain branching agent may be pentaerythritol; a polyhydric alcohol of formula :  R-(OH)n where R is a hydrocarbon group containing 3,6 carbon atoms and n is 3-6 (e.g. glycerol, sorbitol or hexanetriol); a polyhydric alcohol of formula : R-(CH2OH)3 where R is a hydrocarbon group containing 2-6 carbon atoms (e.g. trimethylol ethane or trimethylol propane); a polyhydric alcohol of formula :  <FORM:0847090/IV(a)/1> where n is 1-6 (e.g. trimethylol-, tripropylol- or tributylol benzene - 1.3.5); or a polyfunctional acid ester of formula :  <FORM:0847090/IV(a)/2> where n is 3-5 (e.g. the trimethyl or tetramethyl esters of trimsesic, pyromellitic, mellophanic, hemimellitic, trimellitic or prehenic acids).  Polyesterification is effected in the presence of a catalyst, e.g. p-toluene sulphonic acid, camphor sulphonic acid, antimony oxide, stannous formate, manganous formate, cobaltous acetate, zinc acetate, manganous acetate, zinc caproate, cadmium propionate, zinc propionate, zinc succinate, zinc adipate, zinc azelate or a mixture of manganous formate and antimony oxide. Examples describe the manufacture of modified polyethylene terephthalates by reacting dimethyl terephthalate with ethylene glycol in the presence of various of the monohydric reactants with or without chain-branching agents.
Patent GB-1404945-A (GB)
Title: Data display systems
IPC: G02F1/1335
Filed: 1972-08-07
Abstract: 1404945 Modulating light SIEMENS AG 7 Aug 1972 [28 Sept 1971] 36762/72 Heading H4F A controllable optical filter comprises an electrically controlled variably scattering (depolarising) or birefringent liquid crystal layer 4 deposed between a neutral polarizer 3 (i.e. it polarises all visible wavelengths equally) and an arrangement which polarises visible light in a manner dependent on its wavelength, e.g. a linear polarizer 2 which polarizes all colours except red, or the combination of a neutral polarizer and a birefringent plate. Polarizers 2 and 3 may be linear or circular polarizers and they may be interchanged. A ground glass screen 5 increases the angle of view. One electrode 11 may be reflective rather than transparent, Fig. 2 (not shown). In another embodiment, Fig. 3 (not shown), white light is initially filtered via a polarizer, 3#/2 plate and an analyser, and the coloured light passed through a 5#/2 plate, the liquid crystal layer, a further analyser and a ground glass screen. Further passive filter elements may be included, e.g. as a separate element, as a plate of the liquid crystal cell, or by using a coloured liquid crystal material. The electrodes 10 and 11 may cover the centre cell or be segmented to produce a display of white or coloured characters on a differently coloured background for example. When using a variably birefringent liquid crystal layer, electrodes 10 and 11 may undergo prior treatment whereby the liquid crystal molecules align either parallel or perpendicular to their surfaces. When using optical scattering, a mixture of cholesteric and nematic materials may be used to give a memory effect.
Patent GB-1173879-A (GB)
Title: Electrical Connectors
Inventor: WIELAND FRIEDRICH
IPC: H01R9/26
Filed: 1968-08-01
Abstract: 1,173,879. Terminal blocks. F. WIELAND. 1 Aug., 1968 [9 March, 1968], No. 36854/68. Heading H2E. A metal terminal block b is retained in an open-sided insulating housing a by its clamping screws d which pass through and are gripped by resilient webs g integral with the housing a and having screw apertures h which are initially of smaller diameter than the screws d. Each screw d may have a groove I to locate a slotted arm of a generally U-shaped retaining clip i. Another screw m, which retains an L-section metal strip n, for connecting to neighbouring connectors, may be screwed into the block b and through a web p integral with the housing a. Another web (not shown) extends from the base of the housing a into a central recess in the block b.
Patent GB-887434-A (GB)
Title: Improvements in refrigerator systems
IPC: F25D17/04
Filed: 1960-10-27
Abstract: 887,434. Refrigerating. GENERAL MOTORS CORPORATION. Oct. 27, 1960 [Nov. 16, 1959], No. 36895/60. Class 29 A refrigeration system has in the suction line and adjacent the evaporator outlet an accumulator 18 (Fig. 2) for liquid refrigerant on which is mounted a temperature sensing bulb 26 and bellows 24. Under normal working conditions the operation of the compressor 10 and blower motor 40 is controlled by a temperature responsive assembly 22. 20 mounted on the evaporator 16. Excessive accumulation of frost on the evaporator results in the spilling over of liquid refrigerant from the evaporator to the accumulator 18, the consequent reduction in the temperature of the latter initiating de-frosting of the evaporator by said control means 26, 24. The bellows 24 operate a switch 28 (Fig. 3) which switches off the compressor 10 and blower motor 40 and switches on an electric heater 30 located near the evaporator. This operation occurs at an accumulator temperature of -6‹F., the switch being returned to its normal (full-line) position at an accumulator temperature of 50‹F. As employed in the refrigerator cabinet of Fig. 1 (not shown) the fan 44 circulates air over the evaporator into freezer and cold storage compartments, the air being returned to the suction side of the said fan by means of vents in the said compartments. A damper operated by thermostatic control means regulates the flow of air into the cold storage compartment 6 in response to the temperature of the said compartment.
Patent GB-344391-A (GB)
Title: Springing for motor vehicles
IPC: B60G9/04
Filed: 1929-12-02
Abstract: 344,391. Road vehicle suspension systems. KRATKY, H., 11, T³rkenstrasse, Vienna. Dec. 2, 1929, No. 36921. Convention-date, Dec. 5, 1928. [Class 108 (ii).] The main frame and body of a vehicle are supported upon the axle through springs arranged above the centre of gravity of the sprung part so that the body does not tend to tilt outwardly when rounding corners. In the construction shown in Fig. 1, struts 8, 9 rigid with and projecting upwardly from the axle 3, support arms 5, 6, projecting from the main frame, by helical springs 10, 11. The ends of the arms 5, 6 are slidable vertically on the struts 8, 9. When the vehicle is rounding a curve, centrifugal force acting at the centre of gravity S tends to turn the frame and body about the virtual centre A thus producing a kind of banking effect. Side movement of the frame is controlled by coiled springs y. In a modification, Fig. 2, tension springs 21 are employed and lateral movement is restrained by light laminated springs 26 which also serve to prevent relative longitudinal movement of the axle and the frame.
Patent GB-1249821-A (GB)
Title: Improvements relating to scaffold clamps
Inventor: LOWE JACK GRAHAM
IPC: E04G7/24
Filed: 1969-07-23
Abstract: 1,249,821. Clamps. BURTON DELINGPOLE & CO. Ltd. 30 June, 1970 [23 July, 1969], No. 36931/69. Heading E2B.  A three-way scaffold clamp comprises a body 10 having three seat portions 11, 14 and 17 fixed in relation to the body 10 and cap members 12, 15 hingedly connected to the body, about mutually transverse axes and co-operating with seat portions 11, 14 to clamp scaffold tubes 13, 16 together in mutually transverse relationship, the seat portion 17 being positioned so that the scaffold tube 18 can be held in mutually transverse relation to the tubes 13, 16 by being clamped between the portion 17 and the tube 13. The body 10 has an apertured lug 23 which pivotally supports the cap member 12, has an apertured lug 23 which pivotally supports a bolt 25 which is connectable with the cap member 12 to clamp the tube 13 against the seat portion 11, has an apertured lug 28 which pivotally supports the cap member 15, and has a portion thereof 33 which is slotted at 34 to receive a 'T'-heated bolt 32 therein, the latter being connectable with the. cap member 1,5 to clamp the tube 16 against the seat portion 14.
Patent GB-1453677-A (GB)
Title: Antibacterial cyanoquinoxaline 1,4-dioxides
IPC: C07D241/52
Filed: 1974-08-22
Abstract: 1453677 Cyano - quinoxaline 1,4 - dioxides PFIZER Inc 22 Aug 1974 [7 Jan 1974] 37032/74 Heading C2C Novel compounds of the Formula I wherein the cyano substituent is at the 6 or 7 position and each of R<SP>1</SP> and R<SP>2</SP> is hydrogen, C 1-4  alkyl, 2-hydroxyethyl, 3-hydroxypropyl, CH 2 CH 2 NR<SP>3</SP>R<SP>4</SP> or CH 2 CH 2 CH 2 NR<SP>3</SP>R<SP>4</SP> in which R<SP>3</SP> and R<SP>4</SP> are C 1-3  alkyl and, where applicable, acid-addition salts thereof may be prepared by reacting 5- or 6-cyanobenzofurazan 1-oxide with an acetoacetamide of the formula in the presence of a basic catalyst. The acetoacetamide may be prepared in situ by reacting diketene with an amine R<SP>1</SP>R<SP>2</SP>NH. 5- and 6-Cyanobenzofurazan are claimed in copending Application 24469/76. Pharmaceutical compositions of the compounds of the Formula I with the usual excipients show antibacterial activity when administered orally, parenterally or topically. The compounds may also be used as animal growth promotants when admixed with an animal feed. The compounds may also be used as industrial antimicrobials, for example, in the treatment of water, in slime control and paint and wood preservation and as disinfectants.
Patent GB-820332-A (GB)
Title: A turntable fitting for the mounting of cabinets and other articles
IPC: B60B33/00
Filed: 1956-12-05
Abstract: 820,332. Turntables for furniture. GREENMAN, C. Dec. 2, 1957 [Dec. 5, 1956] No. 37177/56. Addition to 793,880. Class 52(3) The hub of the turntable of the parent Specification holds the plates 5 together and is formed by passing an upset flange 8 of the lower through a central aperture of the upper and then upsetting it outwardly to form a retaining flange 9.
Patent GB-1322433-A (GB)
Title: Radio interference suppression devices
IPC: H01F27/34
Filed: 1971-08-09
Abstract: 1322433 Inductors SIEMENS AG 9 Aug 1971 [13 Oct 1970] 37261/71 Heading HIT In a radio interference suppressing device comprising a "current compensated" choke wherein at least two coils are wound on a ferromagnetic e.g. high permeability ferrite ring-core, a predetermined value of stray inductance is achieved by enclosing the wound core in a casing of electrically and/or magnetically conducting material by selecting before manufacture or adjusting during manufacture the form, material and disposition of the coils and casing. In the embodiment a ring-core 11 with two windings 9 and 10 with their clearances filled with ferromagnetic material and an unwound ferromagnetic ring-core 8 are potted in a casing 1. The potting compound comprises 40% ground quartz in aliphatic epoxy resins, a ring-core with four interleaved windings is described. The casing may be tapered and the position of the choke adjusted by the use of shims. A desired spacing between the windings and the core may be obtained by means of insulating layers applied to the core by fluidized sintering.
Patent GB-1110577-A (GB)
Title: Dyes
IPC: G03C1/83
Filed: 1965-09-01
Abstract: The invention relates to methine dyes of the formulae <FORM:1110577/C4-C5/1> <FORM:1110577/C4-C5/2> wherein p is 0 or 1, R is alkyl or substituted alkyl having up to 18C; Z represents the atoms required to complete a heterocyclic nucleus containing 5 or 6 atoms in the heterocyclic ring and containing at least one sulpho or sulphophenyl group attached directly to a nuclear carbon atom, said heterocyclic nucleus being a thiazole, benzothiazole, naphthothiazole, thianaphtheno-71,61,4,5-thiazole, oxazole, benzoxazole, naphthoxazole, selenazole, benzoselenazole, napththoselenazole, thiazoline, 2-quinoline, 4-quinoline, 1-isoquinoline, 3-isoquinoline, imidazole, benzimidazole, naphthimidazole, 2-pyridine or 4-pyridine nucleus; Q is as for Z or a 3,3-dialkylindolenine nucleus containing at least one sulpho group attached directly to a nuclear carbon atom; A is a hydroxyl group, alkoxy or -NR1R2 wherein R1 and R2 are alkyl or substituted alkyl of up to 12C; and W is <FORM:1110577/C4-C5/3> or <FORM:1110577/C4-C5/4> wherein n and q are 2 or 3.  The dyes may be in the anhydro or alkali metal salt form.  The dyes are prepared by condensing an aldehyde of formula <FORM:1110577/C4-C5/5> or <FORM:1110577/C4-C5/6> where m = 0 or 1 with an appropriate methyl substituted cyclic quaternary ammonium salt. Where the dyes contain a sulpho alkyl group on an N atom these may be prepared by reacting the dye base with an alkane sultone.ALSO:2-Methyl-4-p-sulphophenyl thiazole is prepared by treating 2-methyl-4-phenyl thiazole with conc.sulphuric acid or oleum. 2-Methyl-6-sulpho - benzothiazole, 2 - methyl - 6 - sulpho benzoxazole and monosulphonated 3,3,2-trimethyl-3H-benz[e]indole are obtained similarly. 2 - Methyl - 8 - sulphonaphth[1,2-d]oxazole is prepared by heating 1-amino-2-naphthol-4-sulphonic acid with acetic anhydride. 2-Methyl-5-sulphobenzoxazole is obtained similarly. 2,3 - Dimethyl - 8 - sulpho naphth[1,2-d]-oxazolium p-toluene sulphonate and 3-ethyl-2-methyl - 5 - sulphobenzoxazolium p - toluene sulphonate are prepared by treating the free base with an alkyl p-toluene sulphonate.
Patent GB-1018129-A (GB)
Title: Loudspeaker assemblies
IPC: H04R1/28
Filed: 1963-09-23
Abstract: 1,018,129. Loud-speaker enclosures. A. M. QUENNELL. Sept. 15, 1964 [Sept. 23, 1963], No. 37399/63. Headings H4J and H4X. A loud-speaker enclosure comprises two chambers 12, 13 (Fig. 1) interconnected by a duct 15 in a partition wall 11. A loudspeaker 14 is mounted in an aperture in the larger chamber 12. An hermetically sealed combination is thereby provided in which the air space within the chamber 12 has a volume substantially twice that of the chamber 13. The volume of the chamber 13 and the dimensions of the duct 15 are so chosen as to afford to the chamber 13 a resonant frequency at least as low as the lower limit of audibility (which may be taken as 30 c/s.). The resonant frequency of the assembly substantially equals the resonant frequency of the chamber 13 and the response curve of the assembly exhibits a rising characteristic to the lower limit of audibility. By choice of the cross-sectional area or length of the duct 15, the response of the assembly can be spread over a wide or narrow range of frequencies. The duct is of rectangular or circular cross-section. The resonant frequency of the assembly is preferably below the resonant frequency of the loudspeaker 14. The chambers 12, 13 contain damping material. The loudspeaker 14 may be mounted in the upper wall of the enclosure (Fig. 2, not shown).
Patent GB-1062593-A (GB)
Title: Improvements relating to electrolytic machining
Inventor: WILSON JOHN FRANCIS
IPC: B23H3/00
Filed: 1962-10-04
Abstract: A method of electrolytic machining comprises forcing an electrolyte flow through a restricting electrode gap between end faces of a tool and a workpiece connected respectively to opposite poles of a direct current source, applying a substantially constant bias force which tends to reduce the electrode gap size, while maintaining constant the mass flow rate of the electrolyte to suit an actual machining operation.  Thereby the size of the electrode gap is maintained constant during machining.  Fig. 1 shows a workpiece component 2 with a cylinder 3 mounted on it in which a piston 4 carries a hollow electrode tool 5.  The tool comprises a brass or stainless steel tube 14 electrically insulated at 15.  A pump 17 circulates electrolyte upwardly at a constant mass flow rate through the tool.  Hydraulic fluid, such as oil, is supplied under pressure at the upper side of the piston 4 by a pump 19.  Instead of the hydraulic arrangement, the piston may be connected to a spring mechanism.  An electrically insulating resilient pad 24 beneath the workpiece 2 makes it possible to machine right through the work.  Fig. 2 (not shown) illustrates apparatus for simultaneously machining both sides of a workpiece <PICT:1062593/C6-C7/1> <PICT:1062593/C6-C7/2> component (32), e.g. a turbine blade.  Tools (36, 37) are carried by pistons (34, 35) and electrolyte is supplied and exhausted through ducts (38, 39) at constant mass flow.  Oil is supplied to the ends of a cylinder (33) from a pump (43).  A mechanical linkage (44) links the pistons (34, 35) so that they move equally in opposite directions. In a modification the pistons (34, 35) are moved by connecting rods from pistons in cylinders remote from the cylinder (33) and the linkage between the pistons (34, 35) is hydraulic.  Also the movement of the pistons (34, 35) may alternatively be controlled by a spring movement.  A sodium chloride electrolyte, tools e.g. of austenitic steel, brass and mild steel, and workgaps of 0.003-0.005 inch are specified.  Fig. 3 illustrates apparatus embodying a servomechanism. A hollow tool 53 is moved relative to a workpiece 52 by a hydraulically operated piston 84.  Electrolyte is circulated at constant mass flow between a reservoir 63 and the tool 53 by a pump 64 via a filter 65.  Hydraulic fluid, e.g. oil, is supplied under pressure to both sides of the piston 84 from a supply 81.  88 is a variable restriction.  A servo control valve 75 compares the pressures in the electrolyte and hydraulic systems and effects controls to maintain the tool-workpiece gap constant.  The apparatus could be used to control two or more tools.
Patent GB-1305838-A (GB)
IPC: A44B19/40
Filed: 1971-08-13
Abstract: 1305838 Attaching fastener elements to tapes TEXTRON Inc 13 Aug 1971 [17 Aug 1970] 38045/71 Heading E2S A stitchless slide fastener chain half 10 comprises carrier tape 12 and filamentary meandertype stringer 14 wherein the tape edge portion extends partially into the interstices of the stringer 14 and each of first and second heel members 18, 20 are firmly secured on the tape by stitchless bonding means. As shown in Figs. 1, 2 the heel members are bonded solely to the tape which may be formed of thermoplastic material and woven. Alternatively the heel members are bonded together through the tape material or through holes 131 (Fig. 5). Various types of bonding are described e.g. adhesive, ultrasonic welding.
Patent GB-1437124-A (GB)
Title: Weft thread insertion mechanisms for gripper shuttle looms
IPC: D03D47/24
Filed: 1973-08-13
Abstract: 1437124 Presenting; clamping and cutting weft; gripper shuttles ALFA-LAVAL BERGEDORFER EISENWERKE GmbH 13 Aug 1973 [11 Aug 1972 8 May 1973] 38258/73 Heading D1E In a gripper shuttle loom a device 2, 3 for cutting and clamping the weft end from a stationary yarn package, a member 25 for opening the grippers of the shuttle, and a device for holding the end of the pick together with actuating mechanisms for these motions are all mounted on a plate 12 which is mounted adjustably weftwise on the sley. Gripper shuttles Figs. 1 and 10. A double acting gripper shuttle 11 has two gripper arms 18, 19 pivoted respectively at 21 and 20, both being biassed shut by a spring 22 and mutually connected by a bolt 24 carrying a member 23 which is acted on by a roller 29 of a stationary member 25 as the shuttle enters its box, to open the grippers. Member 25 is pivotable clockwise against a spring 27 so that member 25 pivots out of the way when the shuttle leaves its box, without opening the grippers. In an alternative embodiment each gripper is on an arm 18, 19 pivoted on the shuttle at 34 and pivoted at 32 to a further arm 30 which is itself pivoted at 33 to the shuttle, biassed by a spring 22 to force the gripper shut and having an opener member 31 to cooperate with member 25. The shuttle also has a plate bearing a guide surface 35 for the weft yarn. Weft, guiding, cutting, clamping and presenting, figures 1 and 3. Weft cutting blades 2a, 2b and clamping jaws 3a, 3b at the inserted pick and clamp the end leading to the package as the sley moves backwards after beat-up. The blades and jaws are mounted on a slide 9 movable in the warpwise direction, and are movable vertically by a cranked arm 7 to seat in a recess 42 in the sley to allow the shuttle to pass and to present the weft, extending from a guide 1, to the shuttle. The clamp and cutters are closed automatically by a roller follow 4a sliding in a slot 4b in a plate 8 as they descend into recess 42. The weft guide 1 is adjustable transversely to the weft direction. Holding end of pick Figures 1 and 10. The pick end may be held by a pair of clamp cheeks 46a, 46b Figure I biassed together by a spring, and which are moved out of the path of the shuttle by a pneumatic piston Alternatively, polyamide brushes may be used to prevent the yarn end springing back, or an end catcher as in Figure 10, comprising a pivoted plate sector 53 having a weft holding edge 55 in a recess thereof, against which the weft is held by a spring 57. An arcuate edge 56 is provided on the plate 53 acts on the opener member 31 of the shuttle to release the weft. The plate is pivoted out of the path of the shuttle by a pneumatic cylinder, (Fig. 11, not shown) or by an arm 70 attached to slide 9. The clamping, cutting and weft end catching devices are provided on both sides of the loom, and may be controlled by cams on a half speed shaft, or alternatively by cams on the crank shaft, in which case the device make one redundant movement every other pick.
Patent GB-1190377-A (GB)
Title: Electrical Connector
Inventor: HOLLANDER BETTY RUTH GRODBERG
IPC: H01R24/06
Filed: 1966-08-26
Abstract: 1,190,377. Two-part couplings. OMEGA ENG. Inc. 22 Aug., 1967 [26 Aug., 1966] No. 38315/66. Heading H2E. A connector comprises a socket assembly having a body formed of portions 1a 1b having separate contacts 8, 16, the latter having a resilient arm 18 to grip a pin of a plug assembly 20. The pin may have a circumferential groove to improve the contact. The contact 8 may be a tubular socket 8 having slots 15 into one of which the arm 18 projects. The body portions la, 1b may be identical or one may be in two parts (Fig. 5, not shown) which are together identical to the other portion. The body may be of plastics or ceramic material. The connector may be polarized by socket contacts of different sizes. In another embodiment (Fig. 9, not shown) the contacts of each socket are a strip (35) and a member 43 with a resilient arm 44 which accommodate flat pin contacts between them. Registering lugs (29a) and recesses are provided on the body portions.