baber/WOPTO huggingface dataset:
Patent GB-1442448-A (GB)
Title: Tetrafluoroethylene copolymer moulding powders
IPC: C08F16/14
Filed: 1974-04-01
Abstract: 1442448 Fluorine-containing polymers E I DU PONT DE NEMOURS & CO 1 April 1974 [4 April 1973] 14328/74 Heading C3P A moulding powder of enhanced characteristies comprises a copolymer of tetrafluoroethylene with from 0À02 to 0À26% by weight of a perfluoro (alkyl vinyl ether) wherein the alkyl group contains from 1 to 5 carbon atoms, e.g. methyl or propyl, and the copolymer has a maximum amorphous content which is in any case less than 8% by weight. For copolymers containing less than 0À18% of the vinyl ether monomer, the maximum amorphous content is to be no greater than the value calculated by the equation: weight per cent amorphous content = (18À4 Î weight per cent vinyl ether) + 4À6%. The moulding powder is prepared by pressuring tetrafluoroethylene into an agitated aqueous medium containing a perfluoro (C 1-5  alkyl vinyl ether), dissolved free radical initiator and from 3 to 200 ppm. of a telogenically inactive fluorinated dispersing agent, preferably perfluoro- and omega-hydroperfluoroalkanoic acids of the formula B(CF 2 ) n .COOH wherein n is an integer of from 6 to 12 and B is H or F, and the alkali metal and ammonium salts thereof. Examples are directed to the copolymerization of tetrafluoroethylene with specified small amounts of perfluoro (propyl, or methyl, vinyl ether), employing ammonium carbonate buffer (optional), ammonium persulphate as initiator and ammonium perfluoro-octanoate, caprylate or caproate as dispersing agent. The copolymer may be compounded with glass fibre filler (Example 9). Graphite or bronze are also mentioned. The physical characteristics of the copolymers are compared with those of PTFE homopolymers and specified PTFE copolymers outside the scope of the invention.
Patent GB-517267-A (GB)
Title: Improvements in or relating to lighting fittings
IPC: F21V13/10
Filed: 1938-05-14
Abstract: 517,267. Lighting fittings. ELECTRICALS, Ltd., and McPETRIE, A. May 14, 1938, No. 14436. Drawings to Specification. [Class 75 (ii)] A lamp shade of inverted flower-pot shape and. of opal glass has the source mounted well within it and beneath a reflector so that the major part of the light is diffused or dispersed.
Patent GB-448737-A (GB)
Title: A method of and apparatus for navigating aircraft during landing
IPC: G01S1/02
Filed: 1935-05-17
Abstract: 448,737. Control indicators for aircraft. SIEMENS APPARATE UND MASCHINEN GES., 4, Askanischer Platz, Berlin. May 17, 1935, No. 14509. Convention date, May 19, 1934. [Class 4] [See also Group XXXVIII] In a system for navigating an aircraft during landing, the aircraft is controlled either manually or automatically down a predetermined curve, the starting point of which is ascertained in accordance with the existing wind velocity. The wind velocity is determined by timing the flight of the aircraft between two upwardly directed radio beams. As the aircraft flies through each beam a signal lamp 30 is operated and the time between the flashes produced is determined by a stop watch 23. As soon as the pilot has flown through the second beam, he allows a time to elapse which is governed by the actual wind velocity and then commences his landing glide. He then operates a switch 22 which starts a motor 20 adapted to drive the contact 17 of an impedance 16 which is arranged during the time of operation to vary the current in the circuit 15 of an instrument 2 in accordance with a predetermined altitude-time curve which is independent of wind velocity. A barometric device 1 also operates the instrument 2 and an indication is thereby given of the relation existing between the actual altitude of the aircraft and the desired altitude. The impedance 16 may consist of a resistance, condenser or an inductance. In a modification, the determination of the time at which the landing is to begin may be effected automatically.
Patent GB-1140126-A (GB)
Title: Improvements in or relating to lifting apparatus
IPC: B66C1/24
Filed: 1966-04-01
Abstract: 1,140,126. Lifting cradles; counterweights. DELPHI HOLDING CO. Inc. 1 April, 1966 [2 April, 1965; 25 Nov., 1965; 18 Feb., 1966], No. 14557/66. Headings B8B and B8H. Lifting apparatus as shown in Fig. 1, incorporating an L-shaped lifting fork for suspension from the end of a cable comprises a pair of substantially horizontal parallel arms 1, (2), Fig. 3 (not shown), each similarly arranged. The arm 1 is integral with an upright 4.1 of an upright carrier frame 3 co-operating with a system of rods formed by a tie and a link 16.1, 17.1, respectively, and an upright 7.1 to constitute a deformable quadrilateral. The upright 7.1 forms part of a suspension frame 7 lifted by a hook 14. The link 16.1 is pivoted between the upright 4.1 and the upright 7.1 at 18 and 19: the link 17.1 is similarly pivoted at 20 and 21 and is extended to support a counterweight 23. When the apparatus is unloaded, as shown, the counterweight 23 is adjacent the arms 1, (2) which are horizontal or slightly descending. When loaded by a load (24), Fig. 2 (not shown), the quadrilateral is deformed so that the counterweight 23 swings out and the arms 1, (2) maintained horizontal or slightly ascending. Two counterweights (26), (27), Fig. 5 (not shown), moving differentially may be employed. The lowermost part of the deformable quadrilateral may be constituted by a cam 30.], Fig. 6, on a lever 29.1. In a variant of this last embodiment, Fig. 9, a roller 36 may engage the cam 30.1 and a balance weight 31 may be replaced by, or combined with a traction spring 38 and/or a compression spring 39. An adjustable flexible tie constituted by a chain (40), Fig. 2 (not shown), inserted between the frame (3) and the suspension frame (7) may be used to obtain perfect horizontality of the arms (1), (2) whether the load (24) be heavy or light. The various counterweights may be fixed both in weight and position or adjustable in various ways.
Patent GB-1187165-A (GB)
Title: Variable Capacity Centrifugal Pump.
IPC: F04D29/24
Filed: 1968-03-27
Abstract: 1,187,165. Centrifugal pumps. BORGWARNER CORP. March 27, 1968 [April 14, 1967], No.14680/68. Heading F1C. A variable capacity centrifugal pump has an impeller formed in two relatively movable sections 42, 45. The impeller vanes 61 are carried by movable section 45, and have inclined peripheral edges 69 so that the effective diameter of the impeller as well as the flow area therethrough can be varied by axial movement of the section 45. The rearword edges 67 of the vanes are received in grooves or slots 62 in the section 42. The section 45 is moved axially by introducing pressure fluid through a bore 58 into a chamber 80 wherein it acts on the exposed end of the impeller shaft 48 and a nut 53 screwed thereon. The vanes 61 may be planer or curved, and have peripheral edges of convex or concave form instead of linear form as shown. Instead of the vane-receiving grooves or slots 62, the section 42 may be provided with a number of vane masking fins on its front face 63, the vanes 61 then being received in the spaces between the fins. Moreover, the peripheral edges of the vanes and of the fins are inclined in opposite directions.
Patent GB-260897-A (GB)
Title: Improvements in hand bags
IPC: A45C3/00
Filed: 1926-06-11
Abstract: 260,897. Chapman, D. G. June 11, 1926. Hand-bags.-A hand-bag has attached to the back a foldable member 14 forming a book-holder. The ends of the part 14 are provided with pocketlike recesses to hold the covers of the book formed either by the attachment thereto of parts 15 sewn to the sides 16, 17, or by folding over the ends as shown in Fig. 3 and partly securing them to the sides, leaving flap portions 27. An additional holding means, comprising a strap 18, secured fixedly at one end and detachably at the other to the holder, is shown as provided, or a book-marker may be provided in place of or in addition to the strap. The book-holder is held closed by fasteners on a tab 21, co-operating with a fastener on the back, and carries at its free end one loop of the handle of the bag.
Patent GB-465229-A (GB)
Title: Improvements in wiring ducts for multicellular building structures
IPC: E04B5/48
Filed: 1936-05-26
Abstract: 465,229. Service conduits in floors. YOUNG, J. H., WIESMANN, J. W., and ROBERTSON CO., H. H. May 26, 1936, No. 14809. [Class 20 (ii)] Multicellular floor constructions of the type described in Specifications 400,924 and 420,062, wherein the cellular structure forms parts of the supporting structure and is carried on the main supporting beams, the structure providing hollow spaces through which the service wiring is conducted, are provided with transverse built-up cross-over ducts communicating with the hollow spaces and accessable from the floor level. The cell structure 14, 15 is supported by the main beams 16, and the upper corrugated sheets 12 forming the cells are shortened at one beam to allow of the interposition of the duct. The duct is formed of interchangeable units 18, 20 open at their ends to form overlapping joints 44, 27, Fig. 8, some of the units 18 being provided with upper and lower apertures 25, 26. The lower apertures are adapted to allow connection from points 54 through the cell structure to the duct while the upper apertures are accessable from the floor level 41 through adjustable cover-plates 35 supported on the upper portions of the duct units 18. Fire-stop or heat-insulating plugs 60 may be carried within the duct units 20.
Patent GB-108591-A (GB)
Title: Improvements in and relating to Water Coolers.
Inventor: WEAVER HENRY WILLIAM
IPC: F25D3/02
Filed: 1916-10-19
Abstract: 108,591. Weaver, H. W. Oct 19, 1916. Cooling water for drinking purposes. - The apparatus comprises an ice-chamber 2, of rectangular form with a rounded front, fitted with a funnel 15 into which is tightly fitted a water supply vessel 1, a tank 19 or a coil being connected to the funnel 15 by a pipe 17 and to an external draw-off tap 20 by a sinuous tube 21. A vertically adjustable waste pipe 22 bent over at the top and dipping into a well 14 drains the melted ice into a receptacle 5, which also receives waste from the tap 20. The ice-chamber is fitted with a removable metal lining 10 having a sloping bottom 11, and with a hinged door 9 in a removable top 7. The ice rests upon the tank 19 or upon the coil.
Patent GB-378950-A (GB)
Title: Improvements in or relating to low frequency amplifiers
IPC: H03G1/00
Filed: 1931-05-20
Abstract: 378,950. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and TURNER, P, K., 1, Osborne Terrace, Windsor. May 20, 1931, No. 14904. [Class 40 (v).] In an audio-frequency amplifier, one or more pentode valves are used in the preliminary stages, and volume is controlled by varying the voltage of the screening grids. The pentode valve V1 has its screen grid 2 connected through a choke L to a variable tapping P on a potentiometer R3 connected across part of the supply battery B1. A large condenser C connects the screen grid to the cathode. The anode resistance R2 is low, and coupling to the next valve V2 is effected by a small condenser 5 and leak resistance R4. Clicks arising during adjustment of the tapping P are minimized by the filter effect of the choke L and condenser C. and by designing the coupling members 5 and R4 so as to transmit such low frequencies inefficiently. The three wires to the potentiometer may be formed as a flexible cable to permit control from a distant point.
Patent GB-661616-A (GB)
Title: Winding former for winding the stators of electric machines by mechanical means
IPC: H02K15/085
Filed: 1949-06-03
Abstract: 661,616. Coil making apparatus. MICAFIL SOC. ANON. June 3, 1949 [July 16, 1948], No. 14931/49. Class 35. A winding former for winding a stator includes two pivotally-joined levers 1, 2, one being joined at the middle to one end of the other lever. These levers can be aligned and secured in this position by a locking device, e.g. a pivoted wedge 3 carried by the member 1 in such a way that the wedge can swivel and lock both levers 1, 2 when these are in a straight line. When the levers are aligned, they lie axially over an empty slot 5 between the two slots 16 which are to be wound. At each end of the winding former, there are transverse elements 6 with two beak-shaped corner-pieces 7, 8 in order to prevent the wire from moving out of position. The links 10 of the hinged links 10, 12 operated by a lever 13 serve to grip the rods 9 fitted between the pieces 7, 8 so that the winding former can be pressed against the stator core. After a coil 14 has been wound, the winding former is removed by first disengaging the links 10 from the rods and then by freeing the members 1, 2 by withdrawing the wedge 3.
Patent GB-1137765-A (GB)
Title: Polyethers containing aldehyde groups and process for preparing them
IPC: C08G65/22
Filed: 1966-04-04
Abstract: 1,137,765. Polyethers containing aldehyde groups. FARBWERKE HOECHST A.G. 4 April, 1966 [3 April, 1965], No. 14960/66. Heading C3R. Polyethers containing aldehyde groups are prepared by polymerizing one or more epoxides of the general formula wherein n is 0 to 10 and R is an aliphatic radical containing 1 to 5 carbon atoms, or by copolymerizing said epoxide(s) with at least one epoxide containing no acetal groups, in the presence of an anionic catalyst, and hydrolysing the polymer obtained. Suitable monomers are for example, 2,3-epoxy-propionaldehyde-diethyl acetal, 3,4 - epoxy - butyraldehyde - diethyl acetal and 10,11-epoxy-undecanyl-diethyl acetal. The copolymerizable epoxide containing no acetal groups, may be present in an amount of from 50% to 95% of the total weight of the comonomers and may be a saturated alkylene oxide, a substituted alkylene oxide, a cycloaliphatic epoxide, an epoxy ether or an unsaturated alkylene oxide. Suitable catalysts are, for example, the organo-metal compounds of aluminium and zinc, which may also have been reacted with dialkyl ethers, chelate forming agents, or with alcohols, amines and water. The polymerization can be carried out in bulk, in dispersion or in solution. The polyethers containing acetal groups may be hydrolysed by treating the polymer in an aromatic hydrocarbon with an aqueous mineral acid. The products can be reacted with hydroxylamine or phenyl hydrazine and with compounds containing two functional groups to produce cross-linked insoluble products. Uses: films, fibres and other shaped structures.
Patent GB-716554-A (GB)
Title: Improvements in anodising aluminium and its alloys
IPC: C25D11/04
Filed: 1951-06-25
Abstract: 716,554. Anodising aluminium and aluminium alloys. CAMPBELL, W. J. Sept. 2, 1952, [June 25, 1951; Aug. 20, 1951; Aug. 20, 1951; Oct. 16, 1951; March 3, 1952.] Nos. 14975/51; 19540/51; 19541/51; 24165/51 and 5451/52. Class 41. A process of anodising aluminium and aluminium alloys to form ultra-hard surfaces thereon consists in increasing the applied voltage continuously so as to maintain a steady current density at the surface being treated during the major part of the process period, maintaining the temperature of the electrolyte below 10‹C. and causing relative movement between the electrolyte and the treated surface at a rate greater than 10 feet per minute for each foot of the surface measured in the direction of movement. Preferably combined alternating and direct currents are used. For pure aluminium and alloys containing less than i per cent of any other constituent a combination of A.C. and D.C. in the proportion of 1 volt A.C. to 0.5-6.0 volts D.C. may be used. For alloys with a copper or nickel or manganese content of from 1 to 15 per cent or silicon from i to 25 per cent A.C. alone may be used throughout or A.C. initially followed by combined pressures in -the proportion of i volt C.D. to 0.5 to 6 volts A.C. Alloys containing 1 to 15 per cent magnesium may be treated with pressures in the. proportion of 6 volts D.C. to i to 24 volts A.C., while alloys containing i to 15 per cent zinc may be treated with pressures in the proportion of o to 1 volts A.C. to 1 volt D.C.; or these alloys may be treated with D.C. only. The current density may be over 50 amps per square foot, and may be reduced toward the end of the process. The voltages may be regulated automatically to preselected values over the time of treatment by cams arranged to rotate and operate voltage regulators. The electrolyte may be sulphuric acid, preferably 10 to 20 per cent, or oxalic acid, preferably 3 to 8 per cent, or a 1/1 mixture of both acids; 2 to 5 per cent magnesium sulphate or oxalate may be added. The temperature is preferably at 0‹C. to 2‹C. The relative movement between the surface and the electrolyte is preferably greater than 70 feet per minute per foot of surface measured in the direction of movement. A rapid reciprocatory or rotatory movement may be imparted to the article being anodised, or the electrolyte may be rapidly agitated, or both. A reciprocating movement of 15 to 8o feet per minute, with a stroke greater than half of the dimension across the direction of flow, may be given to the article. The electrolyte may be agitated by injected air, paddles, propellers, turbines or pumps. The electrolyte may be cooled by pumping it through a refrigerating unit, and mixed at the same time. Specification 701,390 is referred to.
Patent GB-469059-A (GB)
Title: Improvements in and relating to nozzles for atomizing liquids
IPC: F23D11/38
Filed: 1936-05-27
Abstract: 469,059. Atomizers. BRITISH THOMSON-HOUSTON CO., Ltd. May 27, 1936, No. 15008. Convention date, May 29, 1935. [Class 69 (iii)] [Also in Group XI] An atomizing nozzle for liquids, especially suitable for use in an oil burner having a viscosity-compensated control as described in Specification 468,985, comprises inner and outer tubular conduits 10, 11 for liquid and expansible fluid respectively and a tip 20 formed with a substantially cylindrical chamber 22 which terminates in a discharge orifice 23 and to which the liquid is admitted through a sharp-edged orifice 25 in a thin diaphragm 24 and the air or other expansible fluid through a tangential inlet port 26. The tip 20 is threaded on the conduit 10 and is sealed in relation to the conduit 11 by a compression gland 28 and gasket 27. The orifices 23, 25 and port 26 are calibrated for preselected flows at predetermined pressures. By removing the gland 28 and unscrewing the tip 20 by means of a wrench inserted in sockets 38 the tip and diaphragm may be replaced by others having different flow characteristics. The liquid flow may be controlled by a cut-off valve 13 which may be operated electromagnetically. The oil and air are preferably supplied to the nozzle under equalized pressure by the pumping mechanism described in Specification 450,197, [Group XXVI].
Patent GB-569757-A (GB)
Title: An improvement in or relating to stop motions for knitting machines
IPC: D04B35/10
Filed: 1943-09-14
Abstract: 569,757. Knitting-machines. REHAK, K. Sept. 14, 1943, No. 15042. [Class 74 (ii)] A warp knitting- machine is provided with a stop-motion comprising a series of spring fingers 5 extending the width of the fabric and carried by the sinker bar 2 so as to be pressed against the fabric passing to the back of the needle bed 11. If a fault has occurred, one or more fingers can engage the needle bed and close an electric circuit to bring about stoppage of the machine. The fingers 5 are brought into contact with the fabric each time the sinker bar 2 is moved towards the needle bed. The fingers may be formed by dividing one edge of a spring plate.
Patent GB-794738-A (GB)
Title: Recovery of tetracycline from fermentation broths
Filed: 1955-05-25
Abstract: Aqueous solutions of tetracycline for oral and parenteral use having a pH 3.5 to 9, and containing excess of 20 mgm./ml. tetracycline are prepared by mixing tetracycline, a non-toxic heavy metal salt, e.g. aluminium sulphate and tartaric acid or similar non-toxic sequestering agents such as citric acid, ethylene diamine, tetra-acetic acid, gluconic acid and phylic acid.  Alternatively, a heavy metal salt of tetracycline may be mixed with the non-toxic sequestering agent.  By heavy metal is meant any metal other than the alkali metals.  Specification 770,065, [Group IV (b)], is referred to.
Patent GB-165317-A (GB)
Title: Improvements in or relating to coiled springs
IPC: A47C23/043
Filed: 1920-06-04
Abstract: 165,317. Heal, H. June 4, 1920. No Patent granted (Sealing fee not paid). Helical springs.-To prevent the ends of upholstery and like springs from slipping round the coils to which they are attached, a single kink d is formed in the coil b at one side of the knot a, or a kink at each side of the knot, as shown on the lower coil c. Similar kinks are formed in the spring coils at the points of attachment of lateral interconnecting members. Reference has been directed by the Comptroller to Specifications 1929/83, [Class 52, Furniture &c.], 2592/09, and 15941/10.
Patent GB-253918-A (GB)
Title: A process for the production of disinfecting agents
IPC: A01N37/36
Filed: 1926-06-16
Abstract: 253,918. Boehringer, A., (trading as Boehringer S÷hn. C. H.). June 20, 1925, [Convention date']. Disinfectants and antiseptics; bacteria, cultivating; medicinal preparations.-Disinfectants, stated to counteract the development. of harmful bacteria such as thrive in alkaline media but not to inhibit the growth of lactic acid bacteria, consist of solutions of lactic acid which have been brought to a hydrogen ion concentration between PH3.2 and PH4.2 with the aid of salts such as lactates. The solutions may be prepared by partial neutralization of lactic acid solution by hydroxides, carbonates, or bicarbonates, of alkali or alkaline earth metals, or by a salt of a weaker acid such as acetic acid, and by diluting or con-. centrating the solution obtained. The solutions may also be prepared by the addition of alkali or alkaline-earth lactates to lactic acid, or by partial decomposition of a salt of lactic acid such as calcium lactate by means of a stronger acid such as sulphuric acid and removal of the salt of the stronger acid so produced. To the resulting solutions may be added bacteriological nutrients such as albumens, peptone, glycoyen, milk sugar, and glucose, odoriferous substances such as oil or neroli and oil of pine, and suspensions of lactic acid bacteria. The preparations may be put up as liquids, or in capsules, or may be dried on an inert powder such as bolus. The Specification as open to inspection under Sect. 91 (3) (a) contains also the following matter :-The salt of a weaker acid may be a borate. In order to obtain a solution of stable PH value the lactic acid used may be of a concentration not exceeding 50 per cent, and containing relatively little lactylolactic acid, or solutions prepared from concentrated acid may be heated so as quickly to arrive at a. stable PH value. Other acids, or mixtures thereof, may be used in place of or in addition to lactic acid, for instance tartaric, citric, acetic and its homologues, oxalic, malic, pyroracemic, and amino acids, with or without the addition of inorganic or strong organic acids. Other ingredients which may be added are disinfectants such as silver or mercury salts, fluorides, phenols, cresols, and disinfectant colouring matters. The preparation may be rendered semi-solid by the addition of gelatine. This subject-matter does not appear in the Specification as accepted.
Patent GB-1039266-A (GB)
Title: Electrochemical cell
IPC: H01M4/04
Filed: 1963-04-17
Abstract: An electrochemical cell comprises a porous sintered electrode which is made by sintering or hot pressing powders comprising a core of a ceramic, glass, quartz, the intermetallic compound AlNi, or a brittle telluride, phosphide or selenide of a metal and a metal coating such as Ni, Co, Cu or Ag.  The powder cores are coated by hot dipping vacuum deposition, decomposition of gaseous organic or inorganic metal compounds, electroless deposition or electrolytic deposition. In examples quartz powder 50-130 microns in size is vacuum deposited with Ag and the powder hot pressed in an inert atmosphere at 400 DEG C.; powder of the intermetallic compound AlNi particle size 100-150 microns is coated with Ni by decomposition of the carbonyl and then sintered.