baber/WOPTO huggingface dataset:
Patent GB-1159367-A (GB)
Title: Radio-Frequency Directive Quadrature Couplers
IPC: H03H7/18
Filed: 1966-08-11
Abstract: 1,159,367. Couplers. MERRIMAC RESEARCH & DEVELOPMENT CO. Inc. 11 Aug., 1966 [11 Aug., 1965; 15 Feb., 1966], No. 36076/66. Heading H1W. [Also in Division H3] A four-port directive quadrature coupler possessing electrical symmetry with respect to at least one axis, comprises a pair of magnetically coupled conductors which are substantially less than one quarter wavelength long at the centre of the operative frequency band and form a lumped constant element within said band having an inductance parameter L when excited in parallel with their ends joined, a capacity C in shunt with the pair of conductors, each end of the pair forming a port of the coupler, the normalized input impedance of the odd mode bi-section and the normalized input admittance of the even mode bi-section being substantially equal such that Z 0  = #L/C, where Z 0  is the characteristic impedance of the coupler. The mode of analysis applied to the coupler is explained in terms of the theoretical network of, Fig. 1, having two axes of symmetry and capable of excitation in an even mode, where voltages +¢v. and +¢V. are applied to the ports 1, 2 or in an odd mode, where voltages +¢V. and - ¢V. are applied to the same ports. The specification contains a detailed discussion of the derivation of a network fulfilling the prescribed conditions, e.g. the network shown in Fig. 7 which is symmetrical about both axes and comprises two bifilar inductances 21-1, 21-2. These may be wound on a toroidal core and the network 40 coupling the networks 20-1 and 20-2 may be replaced by a pair of transmission lines. The specification gives a complete analysis of this network and a list of suitable values for components. The shunt capacitance may consist of the interturn capacitance of the bifilar inductances and, to this end, the windings may be made from enamelled copper wires which are twisted together in such a way that l/c = Z<SP>2</SP> 0 , where l and c are respectively the inductance per unit length and the capacitance per unit length. The coupler may consist of a single such winding or two such windings coupled by an uncoupled pair of transmission lines of specified electrical length. Fig. 16 shows a single-winding coupler in which the bifilar winding is formed from the extended inner conductors of four co-axial transmission lines forming the ports 1, 2, 3, 4. The shunt capacitance of the coupler is adjusted by means of loops of wire 69 whose ends are connected to a conductive base-board 66.
Patent GB-970531-A (GB)
Title: Improved closure member for bottles
IPC: B65D41/18
Filed: 1963-09-13
Abstract: 970,531. Stoppers. W. HARTILL, P. G. SHEPARD, and D. B. MURRAY. Sept. 13, 1963, No. 36107/63. Heading B8T. A closure cap of resilient plastic material for beer bottles &c., has inner and outer skirts 8 and 2, the inner one being of uniform thickness and diverging towards its free end, and the central portion 11 of the cap within the inner skirt being thickened to withstand the pressure within the bottle. A short skirt 14 and annular V-shaped ribs 15 may be provided to contact the bottle mouth and rim respectively.
Patent GB-344012-A (GB)
Title: Improvements in the manufacture of bleaching powder
IPC: C01B11/06
Filed: 1929-11-26
Abstract: In the production of bleaching powder by circulating dilute chlorine in countercurrent to agitated slaked or partly chlorinated lime, for instance in a rotary tube, premature drying and consequent slowing-up of the reaction is prevented by adding liquid water.  Preferably a water spray is used as this assists cooling.  According to the Provisional Specifications, the water may be introduced as steam, or by using moist slaked lime.  The inlet gases may be dried, and when hot inlet gases are used, "tropical" bleaching powder of low moisture content may be obtained in a single operation.  Specification 242,805, [Class 1 (iii), Oxides &c., Metallic], is referred to.
Patent GB-492944-A (GB)
Title: Improvements in and relating to gas blast electric circuit breakers
IPC: H01H33/16
Filed: 1937-12-30
Abstract: 492,944. Gas-blast switches. AKT.- GES. BROWN, BOVERI, & CIE. Dec. 30, 1937, No. 36132. Convention. date, Dec. 30, 1936. [Class 38 (v)] A switch having a fixed nozzle contact d and co-oper ating movable contact e witl reclosing-spring f acted upon by a gas-blast introduced at b, has a protective resistance bridging the contacts and ar ranged in series with a spark gap h in the gas-outflow pas sage. The spark over voltage of the gap h is less than thai of the contacts d, e in the quenching-position so that if after extinction of the are, the voltage-rise is steep, the gap breaks down and inserts the resistance which, by damping the voltage-rise, prevents backarcing. The resistance i is preferably of resorbite and cylindrical and is slipped over the chamber m containing the silencer n. Chamber m may be of insulation or metal and can be formed, with the resistance and spark-gap, as a unit applied to the breaker-casing, the electrode g, on to which the arc is blown, being then separate from the lower gap-electrode and disposed in the arc-chamber a.
Patent GB-368333-A (GB)
Title: Trap for wild animals
IPC: A01M23/26
Filed: 1930-12-01
Abstract: 368,333. Animal traps. KREBS, K., 79, K÷rnerstrasse, Hagen, Germany. Dec. 1, 1930, No. 36135. [Class 5 (i).] In a spring-jaw trap having a bottom bar to which is attached a spring, pressure on which effects the openof the jaws by means of inclined pins fixed thereon, a detent means being simultaneously automatically set, the said detent means comprises an arm coupled with the bait plate and engaging one of the jaws when the trap is set, the said arm having no rigid connection with the other working parts of the trap. In the trap shown in Figs. 2 and 3 depression of the jawspring e rotates pins p fixed to the jaws b so opening the latter, and at the same time rotates a lever q which raises the bait plate f pivoted at k to the horizontal position. One of the jaws in opening rotates the bow r causing the arm n thereof to engage a catch o on the bait plate. In a modification, Fig. 6, the detent means comprises a tapered latch 10, coacting with one of the jaws 2, the said latch being pivoted to an arm 6, pivoted at 7 and fixed to the bait plate 5 which is urged upwardly by a spring 8 : extra jaws 14 are rigidly connected to the jaws 2. In a further modification, Fig. 7, the bait plate 5 is attached to a bridge 18 pivoted at 16, a catch member 19 eccentrically pivoted at 17 being turned outwardly at its lower end to coact with a slot 22 in the bridge 18.
Patent GB-1125180-A (GB)
Title: Improvements in calcium halophosphate phosphors
IPC: C09K11/08
Filed: 1966-08-12
Abstract: 1,125,180. Luminescent materials. GENERAL ELECTRIC CO. 12 Aug., 1966 [16 Sept., 1965], No. 36143/66. Heading C4S. A calcium halophosphate phosphor comprises up to 0À35 mole per cent divalent Zn to improve light output maintenance and may contain Mn, Sb and Cd. In manufacture the ingredients are wet-milled in acetone and fired in N 2  or CO 2 , alternatively the ingredients are fired twice. Zn may be added as ZnNH 4 PO 4 , 7 nO.Sb 2 O 3  or Zn oxide, carbonate, phosphate, oxalate, acetate, hydroxide, halide or sulphate. Chlorine may be added as Mu or Ca chloroapatite. The phosphor is used in a 1.p. Hg arc lamp filled with A or A and N 2 .
Patent GB-326211-A (GB)
Title: Improvements in or relating to telephone instruments
IPC: H04M1/18
Filed: 1928-12-07
Abstract: 326,211. Automatic Telephone Manufacturing Co., Ltd., and Smith, S. R. Dec. 7, 1928. Impulse transmitters for automatic exchange systems, particularly for use in mines and other places of poor illumination, are set by the operation of a key a number of times equal to the number of impulses in a series, the actual transmission of the impulses being initiated by the operation of a second key. In the apparatus shown, a dial 10 of known type but having the finger disc replaced by a ratchet wheel 11 is used. Each depression of the impulse key 19 causes the L-shaped member 24, Fig. 2, on the shaft 17 to advance the ratchet wheel 11 one step by means of pawl 25. The rounded end of member 24 also lifts the cranked arm of a spring. catch 27 so that the holding pawl 29 is released to engage the ratchet wheel. When the second key 20 is depressed the end 39 of a bent member 37 carried on the shaft 18 engages a pin 40 on the locking pawl 29 so that the latter is withdrawn to release the wheel 11 and the impulsemechanism. The portion 36 of the wheel, which is longer than the normal space between two teeth, prevents the setting of the ratchet wheel by more than ten steps. The shaft 42 of the receiver hook is connected by linkage 44 - - 46 to a shaft 48 carrying a trip member 52 which so controls the locking pawl 29 that the operation of the impulse key 19 is ineffective when the receiver is on the hook. If more than one digit is to be transmitted, the key 19 is locked during the transmission of each series of impulses.
Patent GB-508787-A (GB)
Title: Improvements relating to electric converting arrangements
IPC: H02M1/00
Filed: 1937-12-31
Abstract: 508,787. Converting. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET. Dec. 31, 1937, No. 36264. Convention date, Jan. 2. Addition to 407,589. [Class 38 (ii)] Relates to a converting arrangement comprising a grid controlled discharge device 13, Fig. 1, in which, in order to permit forced commutation to take place, a transition anode 4 supplied from a charged condenser 7 is provided to which the arc is temporarily transferred, and consists in blocking the anode to which the arc is being transferred for a time after current flow in the transition anode circuit has commenced sufficient to enable the condenser to charge in the reverse direction to a charge valve adequate for the next commutation operation. In the form shown in Fig. 1, an inductance 10 is connected either in parallel with the condenser or between the transition anode and some point in the D.C. circuit and has such a value that the charge on the condenser is reversed in the interval between two commutation operations, in order to bring the charge on the condenser to the correct polarity for each commutation. In a modification of this the inductance 10 is connected between the transition anode and the cathode in series with a grid controlled valve. A polyphase arrangement provided with an interphase choke is described and in this two transition anodes are provided and connected to the ends of the interphase choke through opposed windings of a transformer to the third winding of which the condenser is connected. In this arrangement the condenser reverses polarity for each successive commutation and no means for restoring its polarity are therefore provided. Fig. 5 shows a frequency changing arrangement in which each of the two three-phase groups is provided with a transition anode 53 or 54 in series with a condenser 55, or 56. The Specification as open to inspection under Sect. 91 comprised also the subject matter of Fig. 1 (Cancelled) in which a source of potential 3 is provided for effecting commutation before the normal moment to enable in a rectifying arrangement a leading P.F. to be obtained. This subject-matter does not appear in the Specification as accepted.
Patent GB-178892-A (GB)
Title: Plate holder for photographic cameras
IPC: G03B17/26
Filed: 1920-12-24
Abstract: 178,892. Eason, H. R. Dec. 24, 1920. Dark slides.-In a dark slide more particularly adapted for use in connection with colour printing, springs are arranged to bear on two adjacent edges of the sensitive plate so that the latter is forced into the opposite corner of the holder. If the corners of the plate are accurately ground to right-angles, all plates exposed under the same conditions will register. The dark slide 1 is fitted with side members 2 notched to receive an adjustable bar 3, which supports the plate-holder 6 and an upper sliding bar 3<a>. The plate holder is positioned on the bar 3 by pegs 4, and is fitted with blade springs 7 on two adjacent edges, finger openings 10, and supporting-tongues 9 for the plate.
Patent GB-393216-A (GB)
Title: Improvements in and relating to centrifuges
IPC: B04B9/12
Filed: 1932-12-23
Abstract: 393,216. Centrifugal machines. KRAUSS, F. E., Schwarzenberg, Saxony, Germany. Dec. 23, 1932, Nos. 36435 and 36436. Convention dates, Jan. 12 and April 28. [Class 23.] The shaft of a centrifuge can oscillate about a point at its foot and is supported in a neck bearing which is transversely resilient. The lower end of the shaft c has a ball c<1> supported in a footstep bearing b covered by a yielding plate b<11> to protect the bearing from dirt. The neck bearing e is supported by a bush e<1> of yielding material in a sleeve f the lower end of which carries a flange supported between springs g, g<1> in fixed extensions of the casing. The pulley h on the drum shaft has a conical part h<1> so that the rim carrying the driving belt from the motor i is in a plane passing through the ball journal c<1>. When the oscillations become too large a brake in the cone h<1> comes into action. The brake ring k is supported by the spring l so that it is capable of yielding downwards in a resilient manner. The driving pulley h may be held on the shaft by friction only. In a modification the slevee f carrying the neck bearing is supported by a helical spring clamped to an arm of the casing, or by a volute or spiral spring.
Patent GB-522459-A (GB)
Title: Improvements in or relating to collapsible awnings, canopies, sunblinds and the like
IPC: E04F10/04
Filed: 1938-12-15
Abstract: 522,459. Sun blinds. MARQUEES, Ltd., and ZONNEVELD, L. J. VAN. Dec. 15, 1938, No. 36522. [Class 20 (iii)] Collapsable sun blinds or awnings comprise side members constructed as described in Specification 498,185, the upper ends of the side members being interconnected by fixed frame member loops formed in hinged sections, and the side members attached by universal joints. The hoops 8-11 are each formed of central portions 1x increasing in length slightly from the rear 8, and the upper ends of the side members 5x are hinged to the ends of these central portions at 12. The lower ends of the side members are hinged together at 18, 19, 20 while the jib 13 on each side is hinged at one end to the rear hoop 8 and at the other end has a universal joint connection 14 with the upright 5 of .the fixed frame 1, 2. The jib at each side is supported by a strut 22 coacting with stops carried by lower side bars 15 formed in hinged portions, and hinged at 17 to the lower end of the jib. The hoops are interconnected by straps 25 to prevent strain on the covering material, and the hood is collapsed by means of cords 27, 28 passing from the ends of lower side bars through eyelets ,31, 33 to a securing device. A wall box or cover is provided into which the awning is collapsed.
Patent GB-1319908-A (GB)
Title: Shelving installation
IPC: E04H5/02
Filed: 1971-08-04
Abstract: 1319908 Shelving FRITZ SCHAFER GmbH 4 Aug 1971 [5 Aug 1970 10 April 1971 7 July 1971] 36659/71 Heading A4B [Also in Division E1] A shelving rack 1a comprises spaced rectangular frames 2 including hollow posts 13 defining therebetween a longitudinal passage through the rack, bearer strips 3 for shelves or the like extending longitudinally of the rack and releasably secured by a non-bolted connection to the posts 13, and in which, at intermediate posts 13, some of the strips 3 are secured to the post to extend continuously across it and some of the strips 13 are disposed end to end at their junction with the post 13. The strips 3 may have tabs 43, Fig.4, engaging apertures 19 in the posts 13. Alternatively, Fig. 16, tabs 80c, 80d pressed out of the posts 13 may engage apertures 86, 87 in the strips 3. Several similar racks may form a part of a building provided with ventilation ducts. Rails 23 may be fitted at the floor of the passage. For figures see next page.
Patent GB-954738-A (GB)
Title: Improvements in jibs
Inventor: MOSKOPF PETER FRANZISKUS
IPC: B60P1/54
Filed: 1962-09-27
Abstract: 954,738. Luffing arm apparatus on vehicles. P. F. MOSKOPF. Sept. 27, 1962, No. 36670/62. Headings B8E and B8H. The telescopic jib of a loadhandling vehicle 1 comprises an arm 9 slidable under the action of hydraulic rams within an arm 4, both arms having a substantially rectangular cross-section. The arm 9 is provided with rollers 14 running on ledges 13 mounted within the arm 4. Hydraulic ram cylinders 16, 17 are supported by a carriage 15 provided at one end with rollers 18 running on the ledges 13 and at its other end with rollers 19 running on the reinforced base 20 of the arm 9. The piston-rods of the cylinders 16, 17 are secured to a bracket 23 at the inner end of the jib and to a wall 24 in the arm 9, respectively. The arm 4 has an open or slotted underside to allow the passage of a carrier member 10 mounted at the outer end of the arm 9 and supporting a gripper device 11. At 4a, 4b guide members on the arm 9 engage the inside of the arm 4. In a modification, Fig. 5 (not shown), the ledges 13 overlie the arm 9 which is supported by depending members provided with rollers running on the ledges and which is guided inside the arm 4 by direct sliding contact with the walls of the arm 4.
Patent GB-1321810-A (GB)
Title: Process for capturing metal ions
IPC: C02F1/52
Filed: 1971-08-04
Abstract: 1321810 Removing metal coins from solutions AJINOMOTO CO Inc 4 Aug 1971 [10 Aug 1970 26 Oct 1970] 36690/71 Heading C1C [Also in Division C2] Metals (other than alkali metals) are removed from aqueous solutions by treating with at least one agent selected from N-higher aliphatic acyl amino acids and water soluble salts thereof. "Higher aliphatic acyl" is defined as being derived from a saturated or unsaturated fatty acid having 8-26 carbon atoms. Water soluble salts include the sodium potassium, lithium, and ammonium salts, and also salts of organic bases such as triethylamine, diethylamine, and triethanolamine. Additional materials selected from compounds having at least 2 OH groups, compounds having at least 2 ether linkages, alkali metal silicates or alkali metal borates may also be added to enhance the capturing effect. Preferred conditions are room temperature and pH greater than 4.
Patent GB-1481515-A (GB)
Title: Apparatus for moving matter in and/or on the ground
IPC: E02F3/815
Filed: 1974-08-01
Abstract: 1481515 Blade assembly AUTOMOTIVE PRODUCTS Ltd 1 Aug 1974 [2 Aug 1973] 36769/73 Heading E1F A blade assembly for attachment to a selfpropelled vehicle comprises: a blade 18 have a detachable working surface 19, a hydraulic linkage for pivotal attachment to a vehicle and pivotally mounted on the rear of the blade, and an electro-hydraulic pack 22 mounted within the blade and including a motor pump unit, control valves, relief valves, non- return valves, a non-vented reservoir, and single and double acting solenoid valves; the pack being designed to be powered by an electrical supply fed from the vehicle and having control means operable from the vehicle. The space within the blade is enclosed but is provided with a hinged access cover 25.
Patent GB-392484-A (GB)
Title: Improvements in presses for moulding stereotype matrices
IPC: B41D1/00
Filed: 1932-12-29
Abstract: 392,484. Mechanical presses. MASCHINENFABRIK WINKLER, FALLERT, & CO. AKT.-GES., 35, Wylerringstrasse, Berne, Switzerland. Dec. 29, 1932, No. 36778. Convention date, Feb. 11. [Class 87 (ii).] In a press for moulding stereotype matrices, the movable press-head o is guided in the main frame p by side-plates q and is operated by links m, n situated within the plates q and pivoted to a lever a oscillated by a connecting- rod c, crank-disc d, and gearing e .. i.
Patent GB-1125733-A (GB)
Title: Method of and apparatus for measuring lengths
Inventor: HARVEY PETER
IPC: G01B5/04
Filed: 1966-08-18
Abstract: 1,125,733. Measuring continuous lengths. BRITISH INSULATED CALLENDER'S CABLES Ltd. Aug. 17, 1967 [Aug. 18 1966] No. 37064/66 Heading G1M. In a method of measuring the length of a moving surface, e.g. a cable 6, a tape 8 is fed from a motor driven supply roll 10 via a capstan 11, pulleys 12-15 and a pivotally mounted pressure member 5 to move both in synchronism and in contact with the cable 6. The pulley 12 is a dancer pulley incorporating a device to measure the tension of the tape 8, so as to actuate control of the drive mechanism to maintain constant the tension of the tape 8. A mechanical or electro-magnetic counter is coupled to the capstan 11 to indicate the cable length. An audible or visual signal may indicate when a predetermined length of tape has passed over the capstan 11.
Patent GB-1194231-A (GB)
Title: Strain Gauge Unit and Method of Applying the Gauge.
IPC: G01L1/22
Filed: 1967-08-11
Abstract: 1,194,231. Measuring strain electrically. AUTOMATION INDUSTRIES Inc. Aug. 11, 1967 [Aug.29, 1966], No.37080/67. Heading G1N. A strain gauge unit, before it is put in use, comprises an active grid portion 20, Fig. 5 suspended in an aperture 36 of a frame 35 so that both sides of the grid are exposed, by extended end terminal portions 26 and tab leads 30, which are attached to the frame. The strain gauge is formed by a micro-photo etching process on a carrier sheet (21), Fig. 1 (not shown), to which it is adhesively secured. Part of this sheet is subsequently removed and tab leads 30 welded to the gauge terminals (25). The frame 35, consisting of two layers, one (37), Fig.3 (not shown), of thin transparent paper provided with adhesive on its inner side and a second backing sheet (39), Fig. 3 (not shown) of paper or plastics, a section of the latter being removed at one end at an area 42 to expose the adhesive, is then placed over the strain gauge with the area 42 in contact with the terminal portions 26, the tab leads being secured to the frame by adhesive tapes 43, 44. Finally the carrier sheet (21) is removed. For transport the unit may be enclosed in a protective envelope. In use, the backing sheet (39) is removed and the adhesived side of the sheet (37) applied to the surface whose strain is to be measured, a base coating (47), Figs.8-12 (not shown), of electrically insulating material having first been applied to the surface. An adhesive bonding material is then applied to the grid portion 20 of the unit whereby it is bonded to the coating 47. The frame together with the terminal portions 26 are then removed, apertures 27 assisting in the removal of the latter, and the gauge is ready for use.
Patent GB-337253-A (GB)
Title: Apparatus for automatically setting upright and supplying the work-pieces to a chocolate coating or similar machine
IPC: A23G3/20
Filed: 1929-12-04
Abstract: 337,253. Winkler, A., and D³nnebier, M. Oct. 2, 1929, [Convention date.] Addition to 302,641. Feeding articles from shoots.-The slide 87 of the parent Specification is rapidly shaken to prevent sticking of the confections and thus to ensure easy passage of the confections to the conveyer 46. The slide 87 is pivotally connected at a to the sides 3 and the underside is provided with a slotted member b to which a rod d is adjustably secured. The rod d has a member f adjustably secured to its lower end between nuts e, the, member being forked to engage the sides of a shaft g carrying a toothed wheel which engages a pawl i carried by the member f and adjustable by a screw l. The slope of the slide 87 and the amplitude of its vibrations can be regulated by adjustment of the rod d in the slot b, and of the nuts e and pawl i.
Patent GB-374861-A (GB)
Abstract: 374,861. Impedance networks. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London, and COE, R. T., Brandreth, Dunchurch Road, Rugby. Jan. 10, 1931, No. 912. Drawings to Specification. [Class 40 (iii).] Undesired harmonics are filtered out of a three-phase supply by means of acceptor circuits arranged in star or delta connection. These are coupled to the mains through transformer windings, the transformer leakage reactances serving as the tuning inductances for the acceptor circuits. The connections to the transformer may be variable tappings. The voltage may be stepped down to a value suitable to the condensers.