baber/WOPTO huggingface dataset:
Patent GB-380325-A (GB)
Title: Improvements relating to the control of high frequency tuning apparatus
IPC: H03J1/10
Filed: 1931-12-31
Abstract: 380,325. Adjusting wireless apparatus. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. -(Assignees of Stephenson, H. M. ; 1002, Northwood Boulevard, Fort Wayne, Indiana, U.S.A.) Dec. 31, 1931, No. 36098. Convention date, Dec. 31, 1930. [Class 37.] The tuning element and volume control of a radio receiver are controlled by a single shaft having means for controlling each separately or both simultaneously ; extreme movement of the volume control adjustment actuates an on-off switch. The tuning condenser 1 is controlled by rotary movement of the shaft 8 and knob 9 by a cord drive 15 and spirallygrooved drums 12, 13. The shaft 8 is grooved as at 20, set-screws 21, 22 in the drums engaging in the groove so as to permit lateral movement of the shaft. Conversely, the toothed rack 23 is secured to the shaft 8 by set-screws 24 engaging in transverse slots so that the rack is unaffected by rotary motion of the knob but is displaced by longitudinal motion, thereby operating the volume control 4. Displacement of the rack 23 to its extreme positions switches the receiver on and off through a toggle switch 25 by engagement of studs 29, 30 with the arm 28. In the modification shown in Fig. 4, the rack 23 is formed as a worm wheel, the thread pitch being so graded that as the tuning is varied the volume control is also varied to give a constant output thus compensating for variation in overall amplification over the tuning range ; longitudinal movement of the shaft 8 provides rapid volume control and switching as before. A circuit diagram showing the arrangement of the volume control 4, condenser 1, and switch 25 is shown in Fig. 2. Specification 291,728, [Class 37, Electricity, Measuring &c.], is referred to.
Patent GB-1448928-A (GB)
Title: Polyol mixtures
IPC: C08K3/00
Filed: 1974-08-16
Abstract: 1448928 Polyol mixtures; polyurethanes BAYER AG 16 Aug 1974 [16 Aug 1973] 36148/74 Heading C3R Polyol mixtures suitable for use in the preparation of polyurethanes comprise (a) at least two polyols which are incompatible with each other and (b) 0À05 to 5% by weight, based on component (a) of an inert surface-active inorganic material having a specific surface of 10 to 800 m.<SP>2</SP>/g. Component (a) is suitably a mixture of a low molecular weight polyol of M.W. 62 to 500 and a high M.W. polyol of M.W. 1000 to 6000. In examples the low M.W. polyol is butane-1,4-diol or ethylene glycol and the high M.W. polyol is a polyether obtained by the addition of propylene oxide and ethylene oxide to trimethylolpropane. The inorganic material (b) is preferably a silicic acid agglomerate and may be a pyrogen, a precipitated or micronized silicic acid or a chrysotile asbestos.
Patent GB-758744-A (GB)
Title: New derivatives of 4, 4-diamino-diphenyl-sulphone and the process of preparing same
IPC: C09B35/227
Filed: 1953-12-30
Abstract: The invention comprises compounds of formula <FORM:0758744/IV(c)/1> where X is H, a monovalent metal or a basic radical of a polyvalent metal of formula Me(OH)m wherein Me is the metal and m is its valency minus 1.  They are used in the treatment of leprosy and tuberculosis. They are prepared by diazotizing 4:41 - diamino - diphenyl - sulphone, coupling the tetrazo compound in alkaline solution with thymol and if desired, salifying the phenolic groups.  In examples (1) 4:41-diamino-diphenyl-sulphone is suspended in aqueous hydrochloric acid, sodium nitrite is added and the resultant clear solution of tetrazo compound is added to a solution of thymol in caustic soda, the 4:41-bis (211methyl-411-hydroxy-511-isopropylphenylazo) diphenyl-sulphone being precipitated by the addition of nitric acid (2) the diargentic derivative of the compound from (1) is prepared by reacting the sodium salt thereof with silver nitrate, and a basic bismuth derivative, wherein the X groups of the formula are Bi (OH)2 groups, is obtained by a similar reaction using a solution of bismuth nitrate containing glycerine.
Patent GB-436337-A (GB)
Title: An apparatus for cleaning the underwater portions of ships or vessels hulls whilst underway
IPC: B63B59/08
Filed: 1934-12-18
Abstract: 436,337. Cleaning ships' hulls. FULLER, S. R., H.M.S. Cardiff, H.M. Dockyard, Chatham. Dec. 18, 1934, No. 36218. [Class 113 (i)] Relates to arrangements for cleaning ships' hulls when the craft is under way comprising a plate A one side of which is provided with a brush C or other scouring device whilst the other side carries a vane J working about a pivot pin K at right angles to the plate. The motion of the water flowing past the vane causes the brush to travel downwards whilst pressing the brush against the plating. At the extremity of its downward travel, the vane is reversed by a trip line to bring it to the surface. According to the invention the leading part of the plate A is substantially flat the trailing part rising in an easy curve. The brush is provided with skids D to facilitate the passage of the device over the strakes.
Patent GB-1331676-A (GB)
Title: High-capacity above-ground storage tanks for inflammable liquids
IPC: B65D90/24
Filed: 1971-08-03
Abstract: 1331676 Collecting tubs for storage tanks VEREINIGTE OSTERREICHISCHE EISENUND STAHLWERKE AG 3 Aug 1971 [22 Sept 1970] 36365/71 Heading E1T The annular gap between a collecting tub 3 surrounding a high-capacity storage tank 4 is covered by a roof consisting of overlapping, trapezoidal plates of plastics material 8 which melts or burns with difficulty. The plates are provided with stiffening ribs 11 and are secured at one end to flanges 9 carried by the tank 1 and at their other end bear on the bottom of a gutter 6.
Patent GB-619424-A (GB)
Title: Improvements in or relating to submarine cable repeaters
IPC: H02G15/14
Filed: 1946-12-09
Abstract: 619,424. Cables. TELEGRAPH CONSTRUCTION & MAINTENANCE CO., Ltd., SMITH, E. W., and PRESSWELL, R. W. Dec. 9, 1946, No. 36378. [Class 36] A repeater housing for submarine cables comprises a metallic sheath built up of a series of annular elements 1 which nest one within the other and are capable of limited angular displacement. The housing is encased in armouring wires W overlying a layer F of water-resistant material and is provided with entry glands G, which may be packed with insulating material M around the conductor C, and which are connected to the end elements of the housing by spigoted bushes 13. Reinforcing wires 15 may be applied over the annular elements 1 and anchored at each end in a groove in the end elements by a clamp 16; a lead or copper sheath 17 may be extruded over the reinforcing wires. The water-resistant layer F may be of polythene which has been mixed with powder material to render it conductive for the repeater earthing wires. Specification 608,042 is referred to.
Patent GB-1009561-A (GB)
Title: Steering apparatus for mobile units
IPC: B62D7/15
Filed: 1963-09-17
Abstract: 1,009,561. Steering vehicles. BARRETT ELECTRONICS CORPORATION. Sept. 17, 1963 [Sept.21, 1962], No. 36595/63. Heading B7H. Swivelling of two or more of the wheels 31-34 of a vehicle is controlled by steering handle 55 through individual synchro transmitter/receiver or other electrical links controlling wheel positioning means. The vehicle shown, Fig. 1, a side loading fork lift truck, has a pair of synchro transmitters 36, 37 (Fig. 7) connected to synchro receivers at the wheels 31, 34 and 32, 33 respectively for longitudinal vehicle movement and a pair 38, 39 (Figs. 4, 7) connected to synchro receivers at the wheels 33, 34 and 31, 32 respectively for movement transversely of the vehicle, movement of steering handle 55 moving all four synchro transmitters although only two are in circuit at a time. The synchro receiver 65 (Fig. 7) at wheel 31 is connected through amplifier 67 to electric motor 68 which rotates wheel spindle 76 by means of chain 70 and gears 74, 75 and gear 81 in the synchro receiver shaft to provide a feedback signal. On rotation of handle 55 (Fig. 4) synchro transmitters 36 and 38 are rotated in opposite directions by wheel 62 acting on sectors 44, 48 secured to the shafts 43 of the synchro transmitters 36, 38 and the transmitters 37, 39 are rotated by different amounts, to give differential steering, by arms 46, 50 connected by links 47, 51 to extensions 45, 49 of the sectors 44, 48. Adjustable stops 53 act on the links to prevent over-centre movement of the links and arms. The vehicle may be also arranged for crabwise motion or rotation about a point by connecting all the wheels to a single synchro transmitter or a pair, if the wheel arrangement is asymmetric, for rotation respectively in the same as or opposite direction from the neighbouring wheel. Alternatively the vehicle may be arranged for two-wheel steering about either a longitudinal or transverse vehicle axis. In these additional arrangements the original or additional servo transmitters may be used connected to handle 55. The vehicle is provided with jacks 85 and steering indicators 83. In a modification for automatic guidance the vehicle is provided, in order to sense the field of an electrically charged guide cable, with sensing coils connected to either the synchro transmitters or the synchro receivers which control the steering.
Patent GB-1433516-A (GB)
Title: Plug for manufacturing refrigerator components
IPC: B29C44/14
Filed: 1973-08-01
Abstract: 1433516 Formers for injection moulding KELVINATOR Ltd 22 July 1974 [1 Aug 1973] 36614/73 Heading B5A [Also in Division F4] A former 1 for use in manufacturing, e.g. refrigerators or freezers has short closely spaced resilient projections 32 (Fig. 7) extending outwardly from at least one surface thereof, the projections being highly resistant to axial compression but being easily bendable by forces applied parallel to said surface. In a preferred embodiment the former is as shown in Fig. 1, the end faces 5, 6 being covered by resilient rubber mats 31 (not shown in Fig. 1) having projections 32. Over the former 1 is placed a liner 33 for a freezer in contact with the projections 32. A freezer shell 34 is placed over the liner at a predetermined spacing, the assembly placed in a jig, and the components of a polyurethane foam injected into the space and allowed to set. The resilient projections 32 facilitate removal of the former from the finished article and this is further assisted by making the body of the former in two parts 10, 11 which are relatively slidable along a line 12 (see Fig. 2, not shown).
Patent GB-824077-A (GB)
Title: Improvements in or relating to root crop-harvesting machines
IPC: A01D15/04
Filed: 1957-11-26
Abstract: 824,077. Potato-diggers. BUCHER-GUYERA. G. Nov. 26, 1957 [Nov. 27, 1956], No. 36857/57. Class 6(3). A potato-digger comprises a digging share 13 and at least two transversely-oscillating sieves 8, 9 which are composed of longitudinal bars 12, the sieves overlapping in the direction of travel and being reciprocated in opposite phase. The machine comprises a frame 5 carried on the three-point linkage 2, 7 of a tractor 1. The frame is supported by laterally-spaced rollers 22, each separately adjustable for height but coupled together, for steering by a handle 27. Each sieve consists of bars 12 attached to a rectangular frame 11, the foremost frame being formed as a digging share 13. The frames are mounted on pivot-pins 10 and are linked together by rocking levers 19, 21 connected to a crank-disc 16 driven from the tractor power take-off 14. Three or more swing- ing sieves may be provided in series.
Patent GB-874257-A (GB)
Title: Improvements in or relating to circuit-breaker actuating mechanisms
Inventor: SOOS STEVEN W
IPC: C04B41/88
Filed: 1958-11-17
Abstract: 874,257. Stand-by supply arrangements. CONTROLLIX CORPORATION. Nov. 17, 1958, No. 36901/58. Drawings to Specification. Class 38 (4). [Also in Group XXXVII] An arrangement for automatically connecting an emergency supply on failure of a normal supply and reconnecting the lathe when it is restored comprises a motor-driven mechanism (see Group XXXVII) which opens one switch and closes another on such failure. Restoration of the supply causes the motor to rotate in its opposite direction to restore the switches to their original portions, the motor being automatically de-energized by operation of a further switch after the transfer has taken place.
Patent GB-1395786-A (GB)
Title: Low voltage dc supply circuit for a television receiver
IPC: H02M3/335
Filed: 1972-08-08
Abstract: 1395786 Automatic voltage control SONY CORP 8 Aug 1972 [13 Aug 1971] 36952/72 Heading G3R [Also in Division H2]  In television equipment of the type having means (such as the line time base 118) for generating alternating current and having a rectifier 120 for supplying direct current to said means, a starting circuit comprises a series arrangement of a capacitor 238 and a diode 240, a connection from the diode 240 providing a starting pulse for the means for generating the alternating current, a reverse diode 242 being provided for discharging capacitor 238. As shown, power for the line output stage 110 is obtained from the mains 200, 202 by means of a voltage-doubling rectifier 230, smoothing circuits 204, 217 and a chopper regulator 213. A voltage from the line output transformer 112 is rectified at 120 to provide low voltage D.C. for the line oscillator 118 and synchronizing circuit 126. Starting. A series circuit comprising capacitors 238, 148 and diode 240 provide a starting pulse for circuit 118 when the equipment is first switched on. Diode 240 prevents a ripple from the mains supply 230 from affecting the line oscillator 118 during normal operation. Diode 146 prevents the starting pulse being fed to the synchronizing circuit 126. Diode 242 allows capacitor 238 to be discharged when the circuit is switched off. Automatic voltage control. The main D.C. voltage at 209 is compared at 206 with a Zener diode 208 and the error used to control the pulse duration of a monostable multi-vibrator 205 (triggered by line pulses). Pulses from the multi-vibrator 205 are passed via an amplifier 207 and rectifier 219 to the base of a chopping transistor 213 so as to determine the mark/space ratio of the current through choke 217 and thus maintain constant voltage. Modification. In Fig. 3, (not shown) a diode bridge is used as the main rectifier, its output being controlled by a series transistor regulator.
Patent GB-810972-A (GB)
Title: Improvements in or relating to boxes
IPC: B65D5/62
Filed: 1954-12-21
Abstract: 810,972. Boxes. BREHMER FOLDING BOX CO. Ltd., and THOMPSON, H. H. Dec. 13, 1955 [Dec. 21, 1954; April 4, 1955 ; June 14, 1955], Nos. 36967/54, 9824/55 and 17125/55. Class 18. A box is made from a single blank 1 of corrugated paper board which is cut at 2, 3 to form flaps 4, 5, 6, 7 extending solely in two directly opposed directions from the uncut portion 8, 9 of the blank, flaps 5, 7 having scored lines 10, dividing them into panels 5a, 5b, 5c and 7a, 7b, 7c. The flaps 6, 7 are folded up at right angles to panel 9 and the portions 7b, 7c are bent round to form a tubular frame with the flaps 6, 7c abutting. This frame is then turned through 90 degrees, so that panel 8 forms a base ; as the frame is turned flap 4 is folded up inside the frame to lie adjacent portion 7c. Flap 5 is then folded up so that the portion 5a lies adjacent portion 7a to which it is secured by staples 12 and portion 5b forms a lid having a tuck-in flap 5c. In a modification, Figs. 3 and 4 of the first Provisional Specification, the blank has three flaps on each side, the flaps 6a, 6b, 9a, 9b being bent up to form the open-ended frame with the flaps 6b, 9b abutting, the frame being turned through 90 degrees to the position shown. The article or articles are then inserted in this open frame which is then turned through 90 degrees in a direction at right angles to the previous turn, the parts then being in the position shown in Fig. 4, after which the flaps 7a, 7b and 10 are folded to surround the frame. The frame is then folded forwardly about score line 15 and the flaps 8a, 8b, 8c and 11 are folded around the frame to form the completed box, which is sealed along one edge. Further flaps may be provided on the blank to reinforce the box. In a further modification. Fig. 2 of the second Provisional Specification intermediate flaps 6a, 9b form partitions within the box and are slotted at 16, 17. The frame is turned down through 90 degrees on to the portion 15 the parts 10a, 10b, 10c and 5a folded round the frame, and the flaps 5b, 10d tucked into the slots 16, 17 thus dividing the box into six compartments.
Patent GB-781152-A (GB)
Title: Improvements in rubber treatment
IPC: C08L9/00
Filed: 1955-12-28
Abstract: A water-free coprecipated mixture of a synthetic rubber containing at least 25 per cent combined aliphatic conjugated diolefin and lignin and from 0.5 to 15 parts (per 100 of rubber) of a normally liquid aldehyde or solid aldehyde polymer, said aldehyde having a boiling-point or sublimation point above 175 DEG  F. is heat treated at at least 300 DEG  F., the resultant mixture masticated, vulcanizing and other compounding agents added, and the mixture shaped and vulcanized.  Specified synthetic rubbers are polymers or copolymers of butadiene with styrene, methyl styrene, acrylonitrile, methacrylonitrile, methylacrylate, ethyl acrylate, methyl methacrylate, and vinyl pyridine and terpolymers of butadiene, styrene and vinyl pyridine.  Specified aldehydes are paraformaldehyde, trioxane, paraldehyde, furfural and dichloroacetaldehyde.  An acidic catalyst capable of catalysing the condensation of phenol with formaldehyde, e.g. zinc chloride or p-toluene-sulphonic acid, may also be present.  Specification 781,019 is referred to.
Patent GB-1075935-A (GB)
Title: Improvements relating to moulding apparatus and processes
Inventor: BECKHOVEN JOSEPHUS ANTONIUS VA
IPC: B22C13/02
Filed: 1964-09-10
Abstract: 1,075,935. Moulding processes and machines; making cores and patterns. LIPS N.V. Sept. 10, 1965 [Sept. 10, 1964], No. 37119/64. Heading B3F. In making a mould, pattern or core of intricate shape, e.g. a mould or pattern for a ship's propeller or blade, points on a required surface are established in a mass of moulding material, e.g. sand and binder in a box 13, by the insertion of a pin 11 to positions determined by a measuring device (1-10), Fig. 1 (not shown), which may be programme-controlled. A wiper is then guided by hand to remove superfluous material to expose the points and thus produce the required surface. The points are marked by balls 16 dropped into the impressions left by the pin 11 or released from the pin; they may be marked by ink, by a heated pin or marker acting on a thermosetting binder or by CO 2  acting on a waterglass binder. A surface 15 may be exposed with marker balls 16 and then further material is heaped on it on a layer of separating material and the process repeated with marker balls 18 to produce a solid pattern, e.g. of a single propeller blade. A cope may be formed above the pattern in situ to form a mould, or the pattern may be removed for this purpose or used to make a mould for casting a further pattern.
Patent GB-976672-A (GB)
Title: Sewing machines
IPC: D05B69/24
Filed: 1962-10-02
Abstract: 976,672. Sewing machines. N. CORAH (ST. MARGARET) Ltd., E. W. FREEMAN, and T. HARRIS. April 29, 1963 [Oct. 2, 1962; Nov. 22, 1962], Nos. 37232/62 and 44129/62. Heading D1G. In a sewing machine driven through a clutch which is operable through a linkage by a hand- or foot-operated means, an electromagnetic device is incorporated directly in said linkage, and a photo-electric device, arranged to detect the presence of work adjacent the stitching pint, is responsive to the absence of such work to operate the electromagnetic device for disengaging the clutch irrespective of the status of the hand- or foot-operated means. A sewing machine 1, driven by a motor 4 via a friction clutch 5 controlled by treadle 6, is provided in immediate advance of the stitching point with a lamp 26 shining downwardly through a hole in the stitch plate on to a photo-electric cell 27, the arrangement being such that, when cell 27 is covered by work, a solenoid 25 is energized to attract its armature 24 for coupling the treadle 6 rigidly to a bell crank lever 21 controlling the clutch 5. When cell 27 is uncovered on completion of a workpiece, solenoid 25 is deenergized to break the coupling to the treadle to effect automatic disengagement of clutch 5. A rheostat control 34 is provided to vary the sensitivity of the photo-electric cell. A further rheostat control 35 provides an adjustable time delay between uncovering of cell 27 and deenergizing of solenoid 25.
Patent GB-1155301-A (GB)
Title: A Furnace for Sintering Metallo-Ceramic Products.
Inventor: LAVRUKHIN GRIGORY MIKHAILOVICH
IPC: B22F3/14
Filed: 1966-08-19
Abstract: 1,155,301. Heat treatment furnaces. NAUCHNO-ISSLEDOVATELSKY AVTOMOBILNY I AVTOMOTORNY INSTITUT. 19 Aug., 1966, No. 37267/66. Heading F4B. A furnace for sintering metallo-ceramic products, e.g. friction discs, comprises a cylindrical body incorporating resistance heating elements 31, a roof 2 slidable on guides 7 by a rod 9 from a pneumatic motor and a base 3 slidable on guides 8 by a rod 10 from an hydraulic motor. The roof 2 and base 3 are associated with the body by sand seals. The roof incorporates a cylinder 11 with ribs 12 engaging a plate 13 and the base a cylinder 18 with ribs 19 engaging a plate 20. Pressure is exerted through plates 13 and 20 on the workpieces in a container.
Patent GB-1003312-A (GB)
Title: Improvements in variable speed electric drives
Inventor: RYDER ANTHONY DAVID
IPC: H02P7/34
Filed: 1960-10-31
Abstract: 1,003,312. Control of D.C. motors. W. M. WADSWORTH & SONS Ltd. Sept. 18 1961 [Oct. 31 1960] No. 37279/60. Heading H2J. [Also in Division G3] In a Ward-Leonard system generator G has a main field winding MF and a correction winding CF which is energized in accordance with the error between the desired and actual speeds of motor M the motor speed being detected by tachometer generator TG or by means of a bridge circuit including the motor armature. The voltage developed across resistor R4 is fed back to amplifier B which supplies booster winding BF to compensate for resistive losses in the armature circuit. The voltage proportional to motor speed is differentiated and the rate-ofchange voltage fed back to amplifier C or to a separate amplifier to counteract any tendency to hunting. The voltage representing the desired speed may be obtained from a resistor in series with winding MF and a regulator resistance. Alternatively the reference voltage may be derived partly from said resistor and partly from a potentiometer across the regulating resistance. The field windings CF or BF may be centre-tapped and supplied from pushpull amplifiers. In another arrangement, the motor is supplied from two or more generators with their armatures connected in series. One main generator may carry the main field winding, a smaller generator carrying the auxiliary field windings. Specification 847,647 is referred to.
Patent GB-329359-A (GB)
Title: Improvements in, and relating to, the manufacture of hollow metal bodies
IPC: B21K1/24
Filed: 1928-12-17
Abstract: 329,359. Turton, Platts & Co., Ltd., G., and Fitzjohn, A. P. Dec. 17, 1928. Valves; shafts and shafting.-Valve-bodies, motor car axle-housings, and other hollow metal bodies are made by placing a heated billet a in a die b of the desired form and arranged to accommodate shaping mandrels f, g, h, Fig. 2, in which are arranged piercing mandrels i, j, k, displacing the metal to fill the die by advancing mandrels f, i and then piercing by advancing the mandrels i, j, k simultaneously or successively. During the last operation the mandrels f, g, h are withdrawn to allow room for the surplus metal, which may then be pressed to form flanges s, t, u, Fig. 4. The walls x are removed by further piercing, machining, &c. The mandrels may be of any desired size and be arranged at any desired angle.