baber/WOPTO huggingface dataset:
Patent GB-419283-A (GB)
Title: Improvements in or relating to tap changing apparatus for electric transformers
IPC: H01H9/00
Filed: 1933-03-06
Abstract: 419,283. Transformers; automatic regulators ; regulating switches. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, WILSON, W., and GIBSON, J. W., c/o General Electric Co., Witton, Birmingham. March 6, 1933, No. 6797. [Classes 38 (ii) and 38 (iv).] In on-load tap changing apparatus for an electric transformer a movable contact device is arranged to effect tap changing by rolling over a fixed contact device and is associated with means for preventing short-circuiting of sections of the transformer windings. A torque motor may be provided to operate the movable contact device and produce automatic voltage regulation. A three phase star connected autotransformer is fed from the mains 1 and connected to the load bus-bars 16 through a tap changing apparatus which is operated automatically by a torque motor 8 connected to the mains 1. Each phase has a set of ten fixed insulated segments 3, each set being arranged in the form of an arc having the motor shaft 9 as centre and each segment being connected to an appropriate tapping point. A disc 11 is keyed onto the shaft 9 and carries three flat springs 12 anchored at their ends to the disc 11 and each having a sector 10 pivoted to its centre. Each sector 10 is provided with twenty insulated segments 4 of approximately half the width of the fixed segments 3, adjacent pairs of the segments 4 co-operating with each of the segments 3. The two sets of alternate segments 4 of each of the movable contact devices are respectively connected by lines 6 and 7 to opposite ends of choke coils 5 which prevents short circuiting of sections of the transformer winding when tap changing takes place. The load bus-bars 16 are connected to the lines 7 through lines 17 as shown. When the mains voltage rises the torque motor 8 which is controlled by the spring 14 rotates the disc 11 in an anticlockwise direction so that the movable contacts 4 roll over the fixed contacts 3 and tap changing takes place to reduce the number of secondary turns and maintain the voltage at the lines 16 approximately constant. Co-operating teeth may be provided to ensure that the fixed and movable contact devices remain in the correct spacial relationship. The torque motor may rotate the disc 11 through suitable gearing and may be fed from the bus-bars 16 the spring 14 being replaced by a gravity operated controlling means and damping means being provided to reduce hunting. The arrangement may be modified to employ a series boosting transformer in place of the autotransformer.
Patent GB-909805-A (GB)
Title: Improvements in or relating to dielectric heating apparatus
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05B6/62
Filed: 1960-02-26
Abstract: 909,805. Dielectric heating. RADYNE Ltd. Dec. 28, 1960 [Feb. 26, 1960], No. 6846/60. Class 39 (3). , Radio frequency dielectric heating apparatus comprises a live electrode 5 located in an oven and a conductive screen 15 surrounding the live electrode and extending, on all sides of the live electrode and in a direction substantially parallel to the direction of the electric field between the live electrode and a co-operating electrode 3, from the live electrode to the cooperating electrode, the screen being electrically insulated from the live electrode and the walls of the oven. A uniform heating effect is imparted to a block of material 1, e.g. rubber, butter, located on a conveyer 2 and the live electrode may consist of a number of pivoted electrodes which align themselves with the surface of the material being heated. Live electrode 5 is suspended by insulators 6 attached to a plate 7, the height of which is controlled by wires 8, 9 passing over pulleys 10, 11 to a motordriven drum 12.
Patent GB-841443-A (GB)
Title: A new or improved greetings card to contain seeds or other granular substances
IPC: B65D27/08
Filed: 1958-03-04
Abstract: 841,443. Envelopes greetings cards. MACKIRDY, L. D. March 4, 1958, No. 6868/58. Class 146(2). [Also in Group XVII] A greetings card comprises an envelope having one of its fixed flaps equal in size to its front so that it is apparently seamless. The envelope is folded on a line parallel to the open end or flap to form a greetings card having pages 1-4. A picture 5 is printed on one of the outwardly facing pages which (together with its border, if any) entirely fills the page and has its left-hand edge coinciding with the fold line.
Patent GB-1004244-A (GB)
Title: Electric switching means
Inventor: PEPPER EDWARD JOHN
IPC: G05F1/45
Filed: 1963-02-20
Abstract: 1,004,244. Switching circuits. ENGLISH ELECTRIC CO. Ltd. May 20, 1964 [Feb. 20, 1963], No. 6896/63. Heading H3T. [Also in Division H2] A " ringing choke " oscillator for supplying pulses to control the firing of a number of siliconcontrolled rectifiers 19, 20, 21 in an A.C. supply system comprises a transistor 41 having a primary winding 38 of a transformer 34 in its collector circuit, the transistor being non-conductive when the input signal to the base of the transistor from a signal source 52 is zero so that no pulses are developed in the secondary windings 31, 32, 33 of the transformer 34. When the signal from the source 52 changes to a negative value, the base of the transistor 41 becomes negative to the emitter and base current is drawn through a feed-back winding 39 on the transformer 34. As a consequence current begins to build up at a uniform rate in the collector circuit which includes the primary winding 38, the build-up being assisted by the induction between the windings 38, 39. When the emitter base conditions are such that the positive feed-back ceases the collector current falls rapidly so cutting off the transistor 41 and simultaneously inducing pulses in the secondary windings of the transformer 34. The frequency of these pulses is of the order of 2 kilocycles per second.
Patent GB-230849-A (GB)
IPC: G01S15/12
Filed: 1925-03-13
Abstract: 230,849. Signal Ges. March 13, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Determining distances acoustically. - The Specification as open to inspection under Sect. 91 (3) (a) comprises apparatus for sounding depths by timing echoes, in which sounds are emitted at regular intervals by the subaqeous transmitter 1 under the control of a continuously revolving commutator wheel 4. This has a conducting segment 15 which intermittently closes a circuit through the brush 9, subaqueous transmitter 1, and alternator 3 so long as the switch 24 is closed. The echo is received at 2 and communicated to a receiver 6 which is protected from the effect of the direct sound by a short circuit applied by the brush 18 and rotating conducting sector 19 or by a screen or a damper. At an instant which can be varied by moving the handle 11 over a scale the brush 12 fixed to the handle closes a circuit through the alternator 3 and receiver 5, the latter being shunted by an adjustable resistance 13. The brush 12 is adjusted until the sound thus produced in the receiver 5 is simultaneous with the echo heard in the receiver 6, the simultaneity being judged by means of the binaural effect. In modifications, the transmitter may be excited by a single impulse or by an electric oscillatory circuit and the commutator may be replaced by a pendulum contact. Instead of an alternator 3 a source of damped oscillations or of short electric impulses may be employed; for great depths the series of impulses may be broken up into groups by means of the switch 24, the first echo of a group being made to coincide with the first outgoing sound of the succeeding group; the receiver may be disconnected instead of being short-circuited, to shield it from the outgoing sound; and a single instrument may be used for emitting and detecting sounds. This subject-matter does not appear in the Specification as accepted.
Patent GB-1459292-A (GB)
Title: Ignition device for electric lamps
IPC: H05B41/06
Filed: 1974-02-15
Abstract: 1459292 Thermal switches ITT INDUSTRIES Inc 15 Feb 1974 [16 Feb 1973] 6944/74 Heading H1N An ignition device 15 for firing a sodium or mercury vapour lamp 2 comprises a thermal switch 3 having a bimetallic arm 7 fixed at one end and separable, when heated, from a fixed contact arm 6; a resistor 12 connected in series with the switch 3 for heating the movable arm 7 by radiation to cause the switch 3 to open and a voltage lamp ignition pulse to be generated across a ballast 5 connectible to the ignition device 15; and means 13 for fusing the resistor 12 if the switch 3 fails to open. When a switch I is closed, current from a power supply AB flows through the ballast 5, the switch 3 and resistor 12 until radiated heat from the resistor 12 causes the switch 3 to open. After the lamp 2 has been ignited by the induced voltage pulse across the ballast 5, the subsequent current flow through the lamp 2 maintains the switch arm 7 in the open position. If the switch 3 fails to open, a bimetallic strip 13 connected at one end to the fixed contact arm 6 continues to be heated and deformed by the resistor 12 until its free end 14 contacts the resistor 12. Part of the resistor 12 is thereby short circuited, excess current in the remainder of the resistor 12 causing the resistor 12 to fuse. The components of the device are enclosed in a casing 15 which is evacuated or filled with argon.
Patent GB-867197-A (GB)
Title: D(-)-1:2, 3:4-diepoxybutane and method for the production thereof
IPC: C07D301/26
Filed: 1959-02-27
Abstract: The invention comprises the compound D(-)-1:2, 3:4-diepoxybutane and the preparation thereof by treating L(-)-2,3-dichloro- or L(-)-2,3-dibromo-butane-1,4-diol or D(-)-1,4-dichloro- or D(-)-1,4-dibromo-butane-2,3-diol with a strong base.  The product is useful in counteracting the development of Hodgkin's disease and lymphoreticulo-sarcoma.  L(-)-2,3-Dichloro- and L(-)-2,3-dibromobutane-1,4-diol are obtained by fractional crystallization of the diastereoisomeric salts of yohimbine or apo-yohimbine with the dihemi-succinates of the corresponding racemic diols.  2,3-Dichloro- and 2,3-dibromo-butane-1,4-diol di-hemi-succinate are prepared from the corresponding diols with succinic anhydride.  D(-)-1,4-Dichloro- and D(-)-1,4-dibromobutane-2,3-diol are prepared by reacting D-threitol with hydrochloric acid or hydrobromic acid respectively.
Patent GB-433522-A (GB)
Title: An improved cleaning and/or dusting tool for suction cleaning apparatus
IPC: A47L9/02
Filed: 1935-03-06
Abstract: 433,522. Vacuum cleaner nozzles. REPLOGLE, D. B., 940, Arlington Avenue, Berkeley, California, U.S.A. March 6, 1935, No. 7046. [Class 8 (i)] A cleaning-nozzle comprises a rubber &c. elbow tube, one, oval, end 11 of which fits over the suction pipe, while the other end is grooved, having lips 16, 17 which receive a flange on a detachable cleaning tool. A longitudinal rib 15 prevents collapse, and by its shape forms a restricted throat. The cleaning tool may comprise a bell, Fig. 6, over which a gauze cover is drawn, or an annular brush, Fig. 10.
Patent GB-193294-A (GB)
Title: Improvements in field and garden rollers
IPC: A01B29/02
Filed: 1922-07-12
Abstract: 193,294. Southall, J. July 12, 1922. Rollers, land and garden.-The balance weight D is constructed in combination with a hollow casting E which is secured to the axle C of the roller and which may be filled with sand, water, or other cheap materials through openings closed by plates G. The ordinary roller barrels A, A, run on roller bearings B on the axle C.
Patent GB-454848-A (GB)
Title: Improvements in and relating to rotary deep boring devices
IPC: E21B3/04
Filed: 1935-03-06
Abstract: 454,848. Deep-boring. MULLER, F., 170, Lainzerstrasse, Vienna. March 6, 1935, No. 7083. Convention date, March 6, 1934. [Class 85] In a rotary deep-boring plant in which the rotary table is driven through one or more gear trains, all the gears are arranged in a closed casing and their shafts are journalled on both sides of the path of engagement of the gear teeth and supported in ball or roller bearings. In Fig. 1 the hollow sleeve 50 is driven through bevel gears 71, 66, and spur gears 52, 51, the gears 66, 52, being carried by a shaft 65 supported in bearings 67, 68, and the sleeve 50 being sealed in the housing by a stuffing box 57 and being supported in bearings 59, 60, of which the bearing 60 is adjusted by nuts 61, 62 ; the housing has an integral ledge 58 for support of the drill pipes &c. during assembly &c. The teeth of the gears 51, 52, may be skew, curved or herring bone form. The shaft of the bevel gear 71 is not arranged as shown but is inclined at right angles to the plane containing the axes of the shaft 65 and sleeve 50. Further, the bevel gears 71, 66, may be replaced by reversing bevel gear 80, 81, 82, Fig. 2, controlled by coil-spring clutches 86, 87. In another form, the bevel gearing is arranged below the derrick floor and drives the sleeve through spur gearing arranged above the floor. The Specification as open to inspection under Sect. 91 also describes the form shown in Fig. 1 (Cancelled) wherein the hollow spindle 1 rotates in a housing 2 in bearings 3, 5, between which is keyed a bevel gear 4 meshing with a bevel pinion 7 driven by sprocket 9 and carried by a shaft 8 supported on both sides of the pinion by roller &c. bearings 10, 11, 12; thrust bearings 13, 14, are also provided. The bearings 10.. 14, shaft 8 and pinion 7 are assembled in a body 16 which is then inserted in the housing 2. A sleeve 22 is fixed within the housing and is sealed at 25 against the spindle 1, the conical upper end of the sleeve serving for the support of drill pipes &c. during assembly &c. Supporting feet 38 are provided such that part of the housing 2 is below the derrick floor. It further states that the shaft 72, Fig. 1, may be arranged as shown or arranged at an angle other than a right angle to the plane containing the axes of the shaft 65, and sleeve 50, and the coil spring clutches 86, 87, Fig. 2 replaced by disc, electromagnet, hydraulic, claw, or combined claw and friction clutches ; also, drive bushings are held in the sleeve by means of arms pivoted to the sleeve. This subjectmatter does not appear in the Specification as accepted.
Patent GB-172251-A (GB)
Title: Washing liquor powder for making washing liquor
IPC: C11D9/10
Filed: 1921-03-08
Abstract: Saponaceous cleansing-compositions to be used in solution in water consist of 100 parts of soda crystals, 20 parts of sodium sulphate, 30 parts of soda ash, 20 parts of muriate of ammonia, and 18 parts of soap.
Patent GB-785297-A (GB)
Title: Improvements in or relating to continuous treatment apparatus
IPC: A22C11/00
Filed: 1954-03-11
Abstract: 785,297. Refrigerators. SEABROOK, J. A. E. June 10, 1955 [March 11, 1954], No. 7134/54. Class 29 [Also in Groups XXIII and XXX] In apparatus for the continuous treatment of articles which have to be cooled within a closed space, a work table forms the top of a processing chamber through which material is passed by a conveyer having an upper run which passes along and above the work table and a lower run passing through the chamber. The working table 1 forms the top of a cooling tunnel 5, the conveyer comprising two pairs of chains 20, 21, one for each side of the table. The chains pass round sprockets 9, 10 in housings 7, 8 at the ends of the table 1, the sprockets being driven by a chain or band and reduction gearing from a motor 11 or means for driving the gears may be provided at each end of the apparatus. Additional tables 43, 44 supported on legs or frames 45, 46 are provided at the ends of the apparatus. A subsidiary conveyer runs on the surface of the table 1, the conveyer comprising a pair of belts 36, 37 which extend into the working surfaces of the two end tables 44, 45 and which run in opposite directions to the chains 20, 21. The belts 36, 37 pass over rubber covered rollers 38, 39 mounted respectively at each end of the apparatus and driven by a mot- or 40, reduction gearing 40a and a chain 41 passing over a sprocket at one end of the roller 39. Carrier members 24 are located between each pair of chains 20, 21. Each carrier comprises a supporting bar 26, a holding member 27 swingably mounted on the bar, the member 27 carrying a plurality of hooks on which the material for processing e.g. sausages S are hung. The member 27 carries a pair of guide rods 29 the ends of which carry rollers 30 which run on guide rails 31. The Provisional Specification states that the two conveyers may be operated from the same prime moving source.
Patent GB-138748-A (GB)
Title: Improvements in mechanism for steering motor vehicles and like purposes
IPC: B62D3/02
Filed: 1919-03-22
Abstract: 138,748. Pugh, W. March 22, 1919. Non - reactive steering- mechanism. - In mechanism in which a spiral rib projects from the face of a plate which is rotated by hand, the rib B is engaged between two rollers E on the end of one arm F of a lever, the other arm of which is connected to the road-wheel steering linkwork. The rollers E are mounted on eccentric pins which may be adjusted to take up any play between the rollers and the rib. The line joining the centres of the rollers is arranged at such an angle to the arm F that it is approximately normal to the spiral rib.
Patent GB-250734-A (GB)
Title: Improved airship mooring mast
IPC: B64F1/14
Filed: 1925-03-17
Abstract: 250,734. Babcock & Wilcox, Ltd., and Hollick, F. W. March 17, 1925. No Patent granted (Sealing fee not paid). Anchoring.-Airship mooring masts comprise inner and outer telescoping tubes 1, 2 the outer of which is mounted on gimbals, a ram 8 which is over-counterbalanced by weights connected to the ram by springs and chains passing over pulleys journaled on the tube 1, motor operated mechanism for extending the inner tube, shockabsorbing means for controlling the lifting movements of the mast and motor operated means for restoring the mast to its vertical position. The two motors are mounted on a platform 19, the motor 20 acting through gearing 22 and pinions 23 on a rack on the inner tube 1. The means for controlling the tilting consists of a series of spring cushioned crossheads 26 disposed round the mast on vertical guides 27 ahd slung on ropes 29 passing over pulleys and connected at their ends to pairs of co-axial drums 30 connected to shafts 33. All the shafts carrying the drums are geared together and driven by a motor with a slipping clutch, and the weights co-act with springs 26 to cushion the movements of the mast. The ram 8, with a swivelling head 14, is connected to a heavy weight 9 by chains 10 passing over pulleys 11 and by springs 13. The hauling-in rope 16 passes into the tube 1 over a pulley 17 and up through the weight. The base of the tube 2 has a spring retracted pintle 36 engaging a socket 37 in the fixed structure 7 when the tube 1 is in its lowered position. According to the Provisional Specification the ram actuating weights rest on resilient supports in the extended position of the ram and the pintle locking the mast is carried by the inner tube 1.
Patent GB-1011661-A (GB)
Title: Door furniture
IPC: C08G69/28
Filed: 1962-02-24
Abstract: 1,011,661. Turn buttons. E. F. MALINS. May 13, 1963 [Feb. 24, 1962], No. 7279/62. Heading E2A. Door furniture for a right- or left-hand opening door comprises a plate or housing 10, Fig. 1 and a fastening member 14 turnable relative thereto and having a portion adapted to project from the edge of the door into a slot 161 and a catch plate 16 on the door jamb, the catch plate being provided with a pair of convergent surfaces 162 such that as the fastening member 14 is turned to its fastening position, it exerts a camming action on the surfaces 162 of the catch plate to force the door on to its seating. The fastening member 14 which is combined with a knob and rotatably secured by a self-locking washer 15 in the plate or housing 10 is so shaped that in the unfastened position thereof a straight edge of the member lies flush with the edge of a door 12. Rotation of the member 14 is limited by a spring loaded ball 17 and recess 106 on the member 14 and plate respectively. In another arrangement, Fig. 6, a cam member is rotatably mounted within a housing 20 for co-operation with a latch plate 23, the cam member being operable by a handle 204 against a spring pressed ball and being reversible on its spindle according to whether or not the housing 20 is to be fitted to a door which opens inwardly or to one which opens outwardly.
Patent GB-297310-A (GB)
Title: Improvements relating to motor-driven tree cutting saws
IPC: B27B17/08
Filed: 1928-03-08
Abstract: 297,310. Ural-Maschinen- Vertriebsges. Sept. 17, 1927, [Convention date]. Stuffing-boxes, substitutes for.-In a fan-cooled internal-combustion engine for driving a treefelling saw, the crank casing is packed by discs 19 pressed by springs 25 against the casing and provided with oil holes 23.
Patent GB-662136-A (GB)
Title: Improvements in or relating to aeronautical propellers and pitch-changing mechanism
IPC: B64C11/42
Filed: 1944-01-14
Abstract: 662,136. Fluid-pressure servomotor control systems; safety valves. UNITED AIRCRAFT CORPORATION, Jan. 14, 1944 [April 8, 1943]. No. 7291/47. Divided out of 752/44. Class 135. An hydraulically actuated variable pitch propeller comprises a hub which encloses a space serving as a fluid reservoir and is provided with sockets in each of which is mounted a propellor blade, and a control valve positioned within the hub and controlling the flow of fluid between the pitch-changing motor and a source of pressure-fluid and also between the motor and the reservoir. As shown, each blade is rotatably mounted in a boss on the hub and has secured to its root a vane motor 38, supplied with pressure fluid from a pump 86 and controlled by a valve 104. A rack 158 is actuated by pitch control mechanism which may be of the character described in Specification 560,522, [Group XXXVII], and, in this case, the rack is actuated by a servomotor. The rack, which may also act on a generator 166 of a pitch indicating device, rotates a screwed sleeve 154 which is thus moved axially to adjust the control valve 104. The latter slides axially within a sleeve valve 102 and relative rotary movement between the two is prevented by a pin 155 in the sleeve engaging a slot 157 in the valve. Pressure fluid is supplied by the pump through pipe 168, and, after passing through the control valve, passes through passages 62, 64 to the motors 38. Each blade is fitted with a gear sector 74 that transmits rotation through a bevel gear 72 and idler 132 to a pinion 134 formed on a sleeve 145 provided with helical grooves 143 in which is engaged the ends of a pin 146 fixed to the sleeve valve 102 and guided in slots 147 in a cap 15 1, secured to the hub. Movement of the blade causes follow-up movement of the sleeve valve 102 to counteract the movement of the control valve 104. The cap 151 can be rotated to vary the initial setting of the sleeve valve. The lands of the control valve are provided with negative lap to unload the pumps when the pitch changing motors are not operating and also maintain equal pressures on each side of the motors. The pump is described in Specification 614,453 [Group XIII] and the pressure side between the pump and the control valve is connected to a pressure relief valve comprising a cylindrical member 202, Fig. 3, reduced in diameter at 207, loaded by a spring 204, and having an axial bore 211. Excess pressure lifts the valve and permits flow through the port 216 to the inside of the hub. The motor also exhausts to the inside of the hub and a pressure relief valve 220 is also fitted to allow fluid to pass to the suction chamber 96 of the pump. An electric motor 242 is provided to rotate the actuating mechanism of the pump when the propeller is not rotating. Specifications 605,045, [Group XXXIII], and 605,063, [Group XXVI], also are referred to.