baber/WOPTO huggingface dataset:
Patent GB-653177-A (GB)
Title: Improvements in or relating to jigs and methods for use in stitching fabric material
IPC: D05B39/00
Filed: 1948-03-01
Abstract: 653,177. Sewing-machines. GARDNER, B. March 1, 1948, No. 6484. [Class 112] A jig for sewing along a predetermined contour comprises sheets 10, 11 hinged at 12 and having guide slots 13 conforming to the contour. The jig is used in conjunction with a presser-foot haying a depending tubular projection which engages the slot. The inner surface of the lower plate 10 may be marked to facilitate placing of the material to be sewn. The upper plate may conform to the shape of the material and fit into a recess in a larger lower plate. The sheets 10, 11 may be laminated and the laminations may be of different materials.
Patent GB-174866-A (GB)
Title: Improvements in the construction of electric transformers
IPC: H01F27/30
Filed: 1921-02-26
Abstract: 174,866. Parry, W. Feb. 26, 1921. Transformers.-A clamping member for transformer coils comprises a screw-threaded plunger 2 adapted to follow up shrinkage cf the coils 6 by the action of a main spring 1, a nut 3 on the plunger being maintained in engagement with an abutment 5 by the action of a spring 4 or a weight in order to prevent return movement of the plunger.
Patent GB-344214-A (GB)
Title: Improvements in electrical relays
IPC: H01H50/46
Filed: 1930-02-27
Abstract: 344,214. Electromagnetic relays. GENERAL RAILWAY SIGNAL CO., Rochester, New York, U.S.A.-(Assignees of Field, 0. S.; 115, Elm Drive, Rochester, New York, U.S.A.) Feb. 27, 1930, No. 6554. Convention date, April 26, 1929. [Class 38 (v).] Relays for use in railway signalling circuits are provided with a variable magnetic bridge across the polepieces causing the relay to have a slow pick-up value. Copper washers may also be threaded on the core to similarly vary the releasing time. As shown applied to the relay described in Specification 275,170, [Class 38 (v), Electric switches &c.], a number of magnetic laminµ 16 of the type shown in Fig. 5 are threaded on the ends of the core members 10, Figs. 1 and 2, adjacent to the polepieces 9, so forming a magnetic shunt of restricted cross section. Thus on energization of the windings 12 the building-up of the fibre will first saturate the magnetic bridge 16 before the armature 7 is attracted and a slow pick-up is thereby attained. Copper or brass washers 15 may also be threaded on the cores to ensure a slow release. Variation of the pick-up and release times may be effected by adding or removing the magnetic laminµ or conducting washers, and the latter may be omitted if a quick-acting release coupled with a slow pick-up is desired.
Patent GB-123644-A (GB)
Title: Improved Apparatus for Making Relief Maps.
Inventor: ARMITAGE FRANCIS PAUL
IPC: G09B29/12
Filed: 1918-04-18
Abstract: 123,644. Armitage, F. P. April 18, 1918. Maps.-Relates to means for use in making relief maps. The map is built up on a glass plate a mounted in a frame having two upstanding fixed sides b, c, and two removable sides or panels. The plate is lined to form squares and the two fixed sides are lined with vertical lines d corresponding to the lines formed on the plate d, and with horizontal lines e. One of the removable panels h is formed by a glass plate lined to correspond with the lines on the sides b, c. A mirror f is mounted at 45 degrees in a detachable trough g. The operator is guided as to the height of the various points of the map by observing the horizontal lines of one of the sides, say c, and those of the glass panel h through the mirror. The trough may be attached to the frame on either of the adjacent sides provided with removable panels. A prism, Fig. 3, may be substituted for the mirror and glass panel h, in which case the lines on the sides b, c are omitted, corresponding lines being formed on the vertical and horizontal faces of the prism.
Patent GB-987511-A (GB)
Title: A combined mineral-cutting and loading machine
Inventor: DOPPE HANS
IPC: E21C27/22
Filed: 1963-02-19
Abstract: 987,511. Mineral-mining machines. BERGWERKSGESELLSCHAFT HIBERNIA A.G. Feb. 19, 1963, No. 6591/63. Heading E1F. About a frame 4, which is open on every side and is cantilevered out from the body 3 of a mineral-mining machine, circulate two cutter pick-armed chains 19, 19<SP>1</SP> inter-connected by scraper bars 22 by which cut mineral is conveyed transversely up on to a conveyer along which the machine is hauled.
Patent GB-457867-A (GB)
Title: Purse
IPC: A45C1/02
Filed: 1935-03-02
Abstract: 457,867. Purses. DELATTRE, G., 90, Avenue du Roi, Brussels. March 2, 1935, No. 6629. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 9, 1935]. [Class 18] A purse comprises a series of rigid cylindrical compartments 2 each holding a pile of coins which are pushed by a spring against a rim or stop 6 so that the coins must be slid sideways to insert or withdraw them. A disc is interposed between the spring and the bottom coin of a compartment, and the rims 6 which extend over only half the circumference of a coin are spaced a distance equal to the thickness of a coin from the upper edges of the compartments or the top of the purse. The purse consists of two planes joined by tubular members constituting the compartments or of a block of celluloid, steatite, &c., with the compartments hollowed out therein. A covering flap 10 of leather is hinged to the purse or provided with an extension which is adhesively secured to the back, bottom, and front thereof.
Patent GB-550171-A (GB)
Title: Circuit arrangements comprising at least one amplifier for amplitude modulated oscillations
IPC: H03C1/06
Filed: 1941-05-23
Abstract: 550,171. Valve amplifying circuits. PHILIPS LAMPS, Ltd. (Naamlooze Vennootschap Philips' Gloeilampenfabrieken). May 23, 1941, No. 6664. [Class 40 (v)] Negative feedback is provided in an amplitude modulated carrier frequency amplifier by supplying detected energy from the output. Both direct and alternating voltage components are supplied, if desired through an amplifier, to a diode connected in parallel to an oscillating circuit tuned to the carrier frequency and provided in the input to the amplifier. The direct voltage component is applied in such sense as to bias the diode positively with increase in carrier wave amplitude. Fig. 2 shows a transmitting amplifier 2 in which increasing positive bias is applied to the diode 9 with increase in output by the diode detector 5. Fig. 3 shows a receiver with the negative feedback applied to the intermediate frequency amplifier 22 and consisting of direct current from the second detector 23 and low frequency from the output, the two components of the feedback being separately controllable by potentiometers 28, 29.
Patent GB-963966-A (GB)
Title: Process for the production of mixed polyesters
IPC: C08G63/692
Filed: 1963-02-19
Abstract: A linear polyester, spinnable into fibres having a good dye absorption and a small tendency to pill is made by (a) condensing a di-(glycol)ester of an aromatic dicarboxylic acid without at least 2% by weight of phosphoric acid to form an initial polycondensate and (b) polycondensing a di-(glycol)ester of an aromatic bicarboxylic acid in the presence of the initial polycondensate to form a final polycondensate containing not more than 1% by weight of phosphoric acid.  Specified esters are the di-(ethylene glycol) esters and the di-(1:4-dimethylol cyclohexane) esters of terephthalic, naphthalene-2:6-dicarboxylic, diphenyl-4:41-dicarboxylic and diphenylmethane-4:41-dicarboxylic acids.  In the preparation of the initial polycondensate, there may be added an amount of alkali metal hydroxide sufficient to neutralise at most one hydrogen atom of the phosphoric acid.
Patent GB-696570-A (GB)
Title: Improvements in and relating to resistance welding electrodes
IPC: B23K11/30
Filed: 1952-03-14
Abstract: 696,570. Making welding-electrodes. MALLORY METALLURGICAL PRODUCTS, Ltd. March 14, 1952 [June 1, 1951], No. 6699/52. Classes 83 (ii) and 83 (iv). A replaceable insert or cap for a resistance welding electrode comprises a nose portion 23, preferably of copper or copper alloy, having a welding face 40 and a hollow skirt 42 having means such as annular corrugations 43 to form an interlock with a socket at the end of the shank of the electrode. The corrugated skirt of the cap 23 is slightly tapered and has a Morse taper on the end of the outer face to facilitate its insertion into a tapered socket 25 formed in a tubular shank 13 which in turn is externally tapered for fitting within a tubular body 11 adapted to be clamped to an arm of a resistance welding machine and having a central pipe 17 for the supply of cooling liquid. On pressing the skirt 42 into the socket 25, the corrugations become distorted and form a liquid-tight seal. To facilitate cooling, the inner wall of the shank 13 is formed with radial splines 15. A worn-out electrode with an integral nose portion may be reconditioned by cutting off the worn end, counterboring the shank to form a socket and inserting a replaceable cap therein. The corrugations may be formed by placing the skirt over a corrugated steel arbor held in the chuck of a lathe and bringing into working contact with the outside of the skirt a corrugated roll mounted on the tool post.
Patent GB-367196-A (GB)
Title: Improvements in separating apparatus
IPC: B07B7/086
Filed: 1931-03-04
Abstract: 367,196. Centrifugal machines. SAINTJACQUES, E. C., 35, Rue LinnÚ, Paris. March 4, 1931, No. 6749. Convention date, Aug. 21, 1930. Addition to 367,194. [Class 23.] In a separator having a cylindrical part 1, an upper conical part 2 and a hopper 3 below the part 1 as described in the parent Specification, the air to supplement that drawn in through the feed pipe 6, is admitted at the neck of the hopper 3 which is open to the atmosphere. The admission may be varied by using interchangeable supplementary cones 3<1> of different apertures. In a modification only one supplementary cone is used, and it is provided with shutters to vary the admission of air.
Patent GB-870769-A (GB)
Title: Improvements relating to disc filters
Inventor: GASH FREDERICK
IPC: B01D29/00
Filed: 1959-02-27
Abstract: 870,769. Filters. AUTOMATIC COAL CLEANING CO. Ltd. Dec. 16. 1959 [Feb. 27, 1959], No. 6843/59. Class 46. A filter disc sector is provided, at its smaller end, with a removable end piece 7 which is secured to the sector frame 1 by bolts 10. The piece 7 may be made from any material and may be secured to the frame 1 by any suitable means.
Patent GB-651753-A (GB)
Title: Improvements in or relating to multiplex transmission arrangements for pulse-phase modulation transmission
IPC: H04J3/16
Filed: 1948-03-05
Abstract: 651,753. Multiplex pulse signalling systems. PHILIPS ELECTRICAL, Ltd. March 5,1948, No. 6861. Convention date, March 8, 1947. [Class 40 (v)] To reduce cross-talk in a phase-modulated pulse multiplex transmission system, one channel of which is used for synchronizing pulses of longer duration than the signal pulse, the synchronizing pulses occur during the latter half of the period allocated to the synchronizing channel. Gating pulses for each channel are derived from a chain of successively-operating pulse generators 41 ... 49 and are applied to pulse duration modulators 31 ... 39. To the modulators are also applied saw-tooth waves generated at 60 and amplified in each channel by amplifier 61 ... 69; and, except in the synchronizing channel, modulating signals amplified by channel amplifiers 82 ... 89. In all signal channels, e.g. the third, the gating pulses are applied to the second control grid 102 of a secondary emission valve, and modulating signals appearing across resistor 96 are added to the saw-tooth voltage across resistor 73 and applied to the first control grid 101. A negative bias is applied to the second grid 102 such that when a positive gating pulse is also applied to that grid, the valve remains cut-off until, in the absence of any modulating signal, the sawtooth voltage rises to half amplitude. The presence of a modulating signal varies the point at which conduction occurs, thereby modulating the duration of the anode current pulses. The outputs of all signal channels appear across the primary of a transformer 107, the differentiated output of which is clipped and amplified by valve 112 to produce a phasemodulated pulse train which is passed to the transmitter. In the synchronizing channel, there being no modulation, all the pulses are of equal duration and commence half-way through the channel gating period, i.e. when the saw-tooth wave reaches half amplitude. The synchronizing pulses are fed directly to the amplifier 112 and are therefore of the required longer duration than the differentiated signal pulses.
Patent GB-106318-A (GB)
Title: Improvements in Coach and other Screws.
Inventor: MUNTZ WILLIAM EDGAR
IPC: F16B25/00
Filed: 1916-05-16
Abstract: 106,318. Muntz, W. E. May 16, 1916. Wood-screws.-The thread is of increasing depth from the point towards the head while the body or stem is cylindrical. As shown, the head may be attachable and screwed on to the body.
Patent GB-795351-A (GB)
Title: Improvements in or relating to gaseous electric discharge apparatus for controlling electromagnetic waves
IPC: H01J17/04
Filed: 1955-03-09
Abstract: 795,351. High-frequency discharge apparatus. TELEFONAKTIEBOLAGET L. M. ERICSSON. March 9, 1955 [March 9, 1954], No. 6993/55. Class 39(1). [Also in Groups XL(b) and XL(c)] An elongated gas discharge tube comprising a cathode 2 and anode 3 is arranged in a waveguide 4 at right angles to the electric field of an electromagnetic wave. The gas pressure in the tube is such that the collision frequency of the electrons therein is less than 1/10 of the frequency of the said electric field, and the tube is so dimensioned that the extension of the gas discharge in a direction parallel to the electric field is less than “ of the wavelength of the said electric field in vacuum. The discharge tube presents an impedance whose magnitude and phase angle vary with the electron density, and provides a virtual short circuit at the valve of electron density at which the plasma frequency corresponds to the frequency of the electric field. The electron density is varied by varying the current through the tube and the arrangement may be used as a TR switch or for amplitude or frequency modulation or for load matching (see Group XL(c)). The combination of the gas discharge tube and a circular waveguide may be used for varying the plane of polarization or for transforming the nature of the polarization of an electromagnetic wave (see Group XL(b)). The gas discharge tube may be placed in the cavity resonator of a reflex klystron, which is frequency modulated by applying a modulating voltage to the reflector electrode, to extend the frequency range over which the modulation is linear, or may be placed in the resonator of an ultra high frequency oscillator to provide automatic frequency control. Alternative switching or modulating arrangements are described in which an annular discharge tube or an elongated discharge tube bent into a circle surrounds the inner conductor of a coaxial line. Similarly, an annular or bent discharge tube may be placed around one or both of the conductors or a parallel wire line or a straight tube may be placed between the conductors perpendicular to the plane passing through the conductors. A magnetic field may be provided to maintain the discharge at a low gas pressure and the gas filling may be hydrogen with some water vapour. As an alternative to the gas discharge between two electrodes, the necessary electron density may be obtained by inducing an h.f. field or by injecting a beam of electrons into an electrodeless gas filled tube.
Patent GB-797002-A (GB)
Title: Improvements in handbrakes for power-driven vehicles
IPC: B60T7/08
Filed: 1955-03-10
Abstract: 797,002. Vehicle hand brake mechanism. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.-GES. March 10, 1955 [March 19, 1954], No. 7037/55. Class 103 (1). In a hand brake mechanism for powerdriven vehicles, in which the hand brake lever applies the brake with one or more pulls, the idle motion in the linkwork to the brakes is taken up at the beginning of the first pull by a string storage brake cylinder which acts befor the hand brake force, characterized by transmission means between the hand brake lever and the working linkage to provide a locking action securing the brake mechanism in any operative position into which it has been moved. In the hand brake mechanism illustrated, a hand brake lever 1 is shown in its released position wherein the hand brake lever 1 and the toothed segment 2 are mounted independently on a shaft 3. In this position the hand brake lever 1 abuts the resilient stop 18 fixed to the chassis 16 and the projection 15 of the lever 1 contacts the arm 13 of a spring- actuated detent 14 which is pivoted about a fixed pin 10 to release the detent 14 from the toothed segment 2. In addition, the spring- actuated pawl 4 pivoted to the hand brake lever 1 is released from the toothed segment 2 by means of the limb 8 of stop member 9 contacting the arm 7 of pawl 4. When hand brake lever 1 is moved in the direction of the arrow 39 to effect braking, the pawl 4 and stop pawl or detent 14 are released from their stops 8 and 15 and engage the toothed segment 2. The pawl 4 carries the toothed segment 2 with it in the same rotational sense, whilst stop pawl 14 slips over the teeth of the toothed segment 2. Rotary motion of the latter first causes a brake valve 28 to be reversed through linkage 20-23 such that the air present in pipes 29 and the pipe leading to trailer braking system 31 and spring accumulator brake cylinder 30 are evacuated to atmosphere and the piston-rod 32 of the brake accumulator brake cylinder acts directly on the lever 33 of the brake shaft 34 to take up the slack in the link work and to turn toothed segment 2 in the direction of the arrow 39 under the pawl 4 and stop pawl 14 such that when all the clearance has been taken up, the toothed segment 2 is held in the new position and the hand brake lever 1 may then be moved to effect braking action. Release of the brakes is effected when hand brake lever 1 is moved in an anti-clockwise direction and strikes the resilient stop 18 such that when the lever 1 is pressed firmly against the resilient stop 18 the projection 15 will strike the stop pawl 14 and the arm 7 of the pawl 4 against stop 8 to release stop pawl 14 and pawl 4 so that the toothed segment 2 is returned to the position illustrated in Fig. 1, wherein the brake cylinder 30 is supplied with compressed air and its spring is stressed to release brakes.
Patent GB-233829-A (GB)
Title: Improvements in internal feed-water heaters for steam boilers
IPC: F22D1/30
Filed: 1924-03-20
Abstract: 233,829. Stephenson, B., and Holden & Brooke, Ltd. March 20, 1924. Feed-water, heating. - A feed-water heater placed in the steam space of a boiler has a central inlet tube B formed with a number of surrounding annular flanged trays F and with a number of V-shaped water outlet apertures h at its upper end. The tube is enclosed by a casing D formed of two longitudinal parts bolted together and having a number of annular flanged trays G projecting between the trays F. The feed-water flows downwards over the trays and is heated by contact with boiler steam admitted through apertures d in the casing. The casing is closed by a cover C having apertures through which air and gases escape. The heated water flows through a passage a<1> in the base A to a pipe leading to the bottom of the boiler.
Patent GB-1414918-A (GB)
Title: Treatment of water to prevent the deposition of scale
IPC: C02F5/08
Filed: 1973-02-14
Abstract: 1414918 Sequestering agents CIBA-GEIGY (UK) Ltd 4 Feb 1974 [14 Feb 1973] 7181/73 Heading C1C [Also in Division C7] Water is treated to inhibit scale deposition by addition thereto of a hydrolysed copolymer of maleic anhydride with a mono-ethylenically unsaturated monomer or monomer mixture, the molar ratio maleic anhydride : other monomers being from 2À5 : 1 to 100 : 1 and the copolymer M.W. being up to 1000. Said monomer may be acrylic acid, methacrylic acid, crotonic acid, itaconic acid, aconitic acid (esters), itaconic anhydride ethyl acrylate, methyl methacrylate, acrylonitrile, acrylamide, vinyl acetate, styrene, α-methyl styrene, methyl vinyl ketone, acrolein, ethylene, and/or propylene. The polymer may be hydrolyzed by water, acid or alkali; 0À1- 100 p.p.m. is added to water in a boiler or seawater evaporator, e.g. of metal such as A1 or brass. A dispersing or threshold agent may be added, e.g. polyacrylic acid (salt), hydrolysed polyacrylonitrile, polymethacrylic acid, polyacrylamide or its acrylic or methacrylic copolymers, lignin sulphonic acid, tannin, naphthalene sulphonic acid/HCHO, starch, or carboxymethylcellulose, polymaleic acid, alkyl- or amino alkyl-phosphonic acid or alkali metal phosphate. There may also be added a precipitating agent, e.g. alkali metal orthophosphate, carbonate, hydroxide, oxygen-scavengers. such as a.m. sulphite or N 2 H 4 , sequestering agents such as NTA or EDTA, corrosion inhibitors such as cyclohexylamine, morpholine, distearylamine/ethylene oxide, stearylamine, Na 2 SO 4 , MgSO 4 , or antifoaming agents, e.g. distearyl sebacamide, or adipamide, fatty alcohols or their ethylene oxide condensates.
Patent GB-557761-A (GB)
Title: Improvements in or relating to the production of condensation products of beta-alanine with lactones
Filed: 1942-05-29
Abstract: 557,761. Pantothenic acid and its homologues. NATIONAL OIL PRODUCTS CO. May 29, 1942, No. 7294. Convention date, June 6, 1941. [Class 2 (iii)] Condensation products of the character of pantothenic acid are prepared by reacting a salt of #-alanine with a lactone of an α-hydroxy fatty acid containing more than four carbon atoms or a hydroxy fatty acid which lactonizes spontaneously into such a lactone, the condensation being carried out in the presence of a substantially anhydrous organic solvent. Solvents used must contain less than 1 per cent. of water, those mentioned including methanol, ethanol, n-propanol, isopropanol, butanol, isobutanol, petroleum ether and heptane. Lactones mentioned include α-hydroxy-##-dimethyl butyrolactone, α-hydroxy-n-valerolactone, and α-bydroxy-#-methyl-butyrolactone. The preferred salt forming metals are sodium, potassium and calcium. In examples, (1) the sodium salt of #-alanine is suspended in absolute ethanol and reacted with (dl - - α - hydroxy - ## dimethyl - γ - butyrolactone ; (2) as in example (1) using isopropanol ; (3) as in example (1) using methanol ; (4) as in example (3) using the calcium salt of #-alanine; (5) as in example (4) using l - α - hydroxy - ## - dimethyl - y - butyrolactone; (6) as in example (5) except that the calcium #-alaninate was added in batches, the reaction mixture being refluxed between the addition of each batch. Reference has been directed by the Comptroller to Specification 552,036.
Patent GB-750048-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H01Q7/00
Filed: 1954-03-12
Abstract: 750,048. Transformers. PHILIPS ELECTRICAL INDUSTRIES, Ltd. March 12, 1954 [March 17, 1953], No. 7296/54. Class 38 (2). [Also in Group XL (c)] A mains transformer in a radio receiver including built-in frame aerials 2, 3 is surrounded by a copper strip 8 forming a shortcircuited turn whereby interference due to high-frequency currents generated in the transformer is reduced.
Patent GB-330585-A (GB)
Title: Improvements in and relating to advertising and display apparatus
IPC: G09F21/10
Filed: 1929-03-06
Abstract: 330,585. Small, F. G. March 6, 1929. Electric collectors. - A suspended mobile body provided with a self-propelling device of the kind described in Specification 275,564, is driven by a motor, and illuminated by lamps fed with current from a cable connected through the swivelling coupling shown in Fig. 3. The coupling, Fig. 3, is suspended by a stirrup 25 from the rope 22, and comprises an outer sleeve 26 within which is a hollow flanged rod 28 supported by ball bearings 29, 30 and connected to the structure at 3. The electric conductors of a cable 24 are attached to lugs 31 connected to brushes 32 bearing on slip rings 34.