baber/WOPTO huggingface dataset:
Patent GB-1039500-A (GB)
Title: Electromagnetic device
IPC: H01F27/36
Filed: 1965-06-18
Abstract: 1,039,500. Transformers. INTERNATIONAL BUSINESS MACHINES CORPORATION. June 18, 1965 [July 1, 1964], No. 25823/65. Heading H1T. Substantial electric field coupling between the primary 10 and the bifilar secondaries 16, 18 of a wide-band transformer is prevented by a neutralizing winding 36 coextensive with the primary and wound so that voltages at adjacent points on the two windings are equal and of opposite sign. The core may be a ferrite toroid. Details of an exemplary transformer are given.
Patent GB-1285858-A (GB)
Title: Piperazine derivative
Inventor: HENDERSON EDWARD
IPC: C07D295/192
Filed: 1971-04-19
Abstract: 1285858 Piperazine derivatives E HENDERSON 19 April 1971 [23 Oct 1970] 25864/71 Heading C2C Novel compound (I) (including salts thereof) is made by reacting phthalic anhydride with piperazine at 0‹ to 50‹ C. The methyl ester of (I) is prepared by reacting it with diazomethane. Pharmaceutical preparations exhibiting anthelmintic action contain (I) and/or its salts as active ingredient; administration is orally.
Patent GB-243876-A (GB)
Title: Alumino-calcareous hydraulic cement
IPC: C04B7/32
Filed: 1924-10-30
Abstract: 243,876. Voisin, U. B. Oct. 30, 1924. Aluminous cements. - Alumino-calcareous cements are obtained by heating a mixture of bauxite and calcareous material during a long period (e.g. 9-12 hours) at a temperature well be low its melting point, suitable temperatures being 900-1100‹ C. The proportions of the ingredients are such that when the contents of lime, silica, and alumina are expressed as percentages of the whole, the expression Ca O- (2 Si O2 + ¢ Al2 O3,) is between + 15 and - 15, and is preferably zero.
Patent GB-1339512-A (GB)
Title: Swivelable jet nozzle
IPC: F02K1/00
Filed: 1971-04-19
Abstract: 1339512 Swivelable jet nozzle - GENERAL ELECTRIC CO 19 April 1971 [2 July 1970] 25927/71 Heading B7G A jet nozzle comprises duct sections 10, 12, 14 of elliptical cross-section serially and rotatably connected to one another in planes oblique to their longitudinal axes, and so arranged that duct 12 rotates in the opposite direction to ducts 10, 14 to effect nozzle deflection whereby the longitudinal axes of all the ducts remain coplanar. To effect deflection from the horizontal (Fig. 1) to the vertical (Fig. 2) mode, a motor 32 on supporting structure 22 causes a drive ring 24 to drive a speed reducer gear means 34 via gears 28, 38; a torque is then applied to duct 12 via gears 48, 36. Synchronized rotation of duct 10 is effected by a lightly loaded gear train 50 which engages a ring gear 60 fixedly carried by 22, and duct 14 is rotated at the same speed by means of ring gears 62, 66. The speed reduction between ring 24 and gear 36 is 28 : 1 so that torque is transmitted at high speed and low force to minimize the size and weight of the gears. The rotational axes of the speed reducer gears and of the lightly loaded gear train are disposed in the plane of the minor axis of the duct section ellipse in order to minimize the spatial envelope of the jet nozzle. The nozzle may comprise more than three sections to enable reverse thrust to be achieved.
Patent GB-1025206-A (GB)
Title: Method of and means for scraping rectangular tanks
Inventor: THATCHER HUBERT DOZELL
IPC: B01D21/18
Filed: 1962-07-06
Abstract: 1,025,206. Sludge removing scrapers. NORSTEL & TEMPLEWOOD HAWKSLEY Ltd. March 16, 1965, No. 26030/62. Heading B8E. Sludge is scraped into a well 50 of a settling tank 21 by a scraper 45 mounted on carriages reciprocated along the walls of the tank by chains 41 driven by sprockets 40. The arrangement is such that wheels 49 on arms 47 run on the bottom of the tank with the scraper engagement therewith during the operative stroke but the scraper mechanism is re-used by a cable 54, passing round a reeling drum, during the return stroke. A scumming board 60 is provided which is mounted on arms 64 in opposition to the arms 47 so as to skim the surface during the return stroke, while being spaced therefrom during the scraping stroke. In a modification, the arms 47 are mounted on a shaft which is counter-weighted, the raising and lowering being effected by a cam roller as the carriages are reciprocated. In another modification, the scumming board is lowered below the surface during the scraping stroke.
Patent GB-518294-A (GB)
Title: Apparatus for the injection moulding of thermo-setting plastic masses or compositions
IPC: B29C45/02
Filed: 1938-09-06
Abstract: 518,294. Injection-moulding thermo-setting material. KRAUSE GES. J. Sept. 6, 1938, No. 26042. Convention date. June 27, 1938. [Class 87 (ii)] In a press for the injection-moulding of thermo-setting plastic material, the material is forced by a piston 7 from a filling chamber 2 in a lower die-member la through nozzle ducts 3 at the joint between upper and lower diemembers, 1, la, into die-cavities 4. The die is held closed by a top piston 5 which develops, about twice the pressure of the lower charging piston 7. The lower die-member la is provided with means for heating the dies 4 and the chamber 2, so that the material being moulded is rendered plastic and then made to set. The dies 4 may be arranged concentrically around the chamber 2, the ducts 3 being radial channels in the member 1a. The piston 7 is connected to the lower press-piston 6.
Patent GB-702058-A (GB)
Title: Improvements in or relating to an impedance apparatus
IPC: H01F21/00
Filed: 1950-10-26
Abstract: 702,058. Valve generating circuits. CONSOLIDATED ELECTRIC CO. Oct. 26, 1950 [Nov. 3, 1949], No. 26120/50. Class 40 (6) The apparent impedance of a circuit element is altered by connecting in series with it a voltage whose magnitude is proportional to the voltage applied to the circuit element and which is obtained from a variable voltage ratio device fed through an isolating means from the applied voltage. The apparent impedance of an inductor 42 or of a capacitor or resistor connected in its place as measured between points 11 and 12 may be increased or decreased by feeding the voltage applied between the points to an amplifier valve 75 the output of which feeds a transformer 15 whose secondary winding 14 produces a voltage in series with the inductance. The magnitude and polarity of this voltage may be varied by rotating the secondary winding by means of a knob 30 and the transformer may be such that the voltage is linearly related to the angle of the coil. The transformer may alternatively be connected in the cathode circuit of the valve, Fig. 1 (not shown), or negative feedback may be applied through a resistor and capacitor in series, connected between the anode and grid, Fig. 2 (not shown), to linearise the amplification of the valve. The range of variation of the impedance may be altered by increasing or decreasing the gain of the valve for example by adjusting the cathode resistor 76 or an anode to grid feedback resistor. If required an additional amplifier may be included in the transformer circuit and the transformer may be of any type having a movable flux carrying member. The variable inductance circuit shown is connected in parallel with a capacitor 43 to form the frequency determining circuit of an oscillator the required positive feedback being applied through resistor 61 from an additional amplifier valve 64. The output from the oscillator is derived from a winding 72 on the transformer. The valve 64 is arranged to determine the amplitude of oscillation so that valve 75 always operates on the linear part of its characteristic and the apparent impedance of the inductor does not change with oscillation amplitude. It is stated that the apparatus may be used to change the phase angle of an impedance and that the primary of the transformer may be tuned by a capacitor 25.
Patent GB-660140-A (GB)
Title: Improvements in operating circuits for electric discharge lamps
IPC: H05B41/24
Filed: 1948-10-07
Abstract: 660,140. Supply systems for discharge tubes. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 7, 1948 [Oct. 10, 1947], No. 26178/48. Class 38 (iv). A supply system for a discharge tube 1, such as a fluorescent lamp, for use on a motor vehicle, comprises a variable speed alternator 8, which may be driven by the motor 9 of the vehicle, provided with automatic voltage control and feeding the tube through a ballast consisting of a choke 10 and resistor 11 in series. The resistor may be tungsten filament lamp. The nominal frequency of the alternator may be 450 cycles per second, being variable over the range of 80-700. To facilitate striking of the tube an external starting strip 5 may be provided, with or without a condenser 14 for effecting a " resonant " start at any desired frequency. The condenser may be disconnected by a glow discharge switch 13 when the tube strikes.
Patent GB-484277-A (GB)
Title: Improvements in dividing-machines for marking graduations
Filed: 1937-09-28
Abstract: 484,277. Photo - electric control of dividing-engines for marking graduations. SCHMIDT, K. Sept. 28, 1937, No. 26227. Convention date, Oct. 6, 1936. [Class 40 (iii)] [Also in Group XX] A dividing-machine, for marking graduations on dials, rules and the like, comprises means for optically scanning a templet which bears a pattern (enlarged or reduced if necessary) of the graduations to be inscribed and which is moved synchronously with the work, starting and stopping of the work being controlled by the scanning light beams through a photoelectric cell and relay, to allow the scribing tools to operate on the work at the required intervals. In the apparatus shown, dial plates 1 to be graduated are rotated by gearing from a shaft 4 which is driven by a motor 11 through a clutch 10. A shaft 7 driven by 4 through gearing 5, 6 carries a support 8 for a templet 9 representing the graduations to be marked. Geared directly to the motor is a third shaft 14, which actuates scribing tools 16 through cams 15. The templet as shown has alternate reflecting and non-reflecting portions, and as it moves it is scanned by light from a source 17. When a reflecting part of the templet enters the light beam, the reflected beam acts on a photoelectric cell 18, and the resulting current impulse actuates a relay 20 which disengages the clutch 10. Thus the dials 1 and the templet are stopped, and the continuing rotation of the shaft 14 subsequently causes the graving tools to operate. After the tools have been raised out of contact with the dials, a cam 21 operates a lever to cause the clutch 10 to be re-engaged, and the sequence of movements is repeated. A switch 32 in the clutch circuit may be operatively combined with the clutch-operating lever. Various modifications are described, according to which : (1) the templet may be made with slits, or with alternate transparent and opaque portions to control the light beam by transmission instead of reflection, in which case it may be in the form of an endless film, (2) separate motors may be provided for the shafts 4 and 14, (3) instead of operating a clutch, the relay 20 may control a cut-off switch for the motor driving the shaft 4 ; in this case an electromagnetic band brake may operate automatically to stop the motor as soon as its circuit is broken, (4) instead of providing a cam 21 for restarting the shaft 4, this operation may be effected by control of the photo-electric cell by means of a separate light beam transmitted when required through a screen on the toolactuating shaft 14.
Patent GB-1438977-A (GB)
Title: Endless loop record tape transducer system
IPC: G11B15/43
Filed: 1973-06-01
Abstract: 1438977 Tape cartridges IIT RESEARCH INSTITUTE 1 June 1973 26308/73 Heading B8M [Also in Division G5] An endless loop magnetic tape cartridge 11 has a tape coil 128 wound around a hub 125, 126 and supported by a flange 127 and extends from the inner turn of the coil around a non-rotary guide 130, between drag elements 94, 96, around pins 137, 138 on pivoting arms 132, 133, around a pin 140 and thence around a spring-biased tension arm 143 to the outer turn of coil 128. Arms 132, 133 are spring biased to the position of Fig. 2 to provide a taut tape part 25, when the cartridge is not in use, adjacent a front pressure roller-receiving opening and adjacent a bottom capstan-receiving opening 156. A further bottom opening 29 receiver a photo-electric sensor to detect a reflective part on the tape. The drag elements which tension the tape on the inlet side to a capstan drive (14), Figs. 1, 3 (not shown), comprise a stationary part 96 on one side of the tape and a part 94 on the other side of the tape on an arm 151 biased by a spring 150 to urge a pad 94a against part 96. Arm 151 is engageable by a pin on a capstan and transducer head carrying carriage (70) of the tape deck so that when the cartidge is loaded thereon pad 94a is released from part 96 being reengaged therewith on moving carriage (70) to an operative position. In alternative forms, one or both of drag elements 94, 96 are provided on the tape deck. A brake pad 92 on a spring biased arm 153 is operable on the periphery of flange 127 to brake the tape coil 128. A cover 720, Fig. 28, carries an interrupted annular member 731 lying over coil 128 and acting with a lower surface of guide 130 to limit upward movement of the coil 128. Sliders 173, 174, Fig. 2, act via a linkage, Fig. 30 (not shown), to pivot arms 132, 133 inwardly to loop tape part 25 around capstan (14) when the sliders 173, 174 are engaged by rollers (171), (172), Fig. 1, on moving the tape deck carriage (70) to its operative position. Recesses (755), (756), Fig. 29 (not shown), in the cartridge bottom receive fingers (15a), (16a), Fig. 3 (not shown), on the tape deck to allow a downward pivoting movement of the cartridge thereabout to a loaded position on the tape deck. The tape may be “ inch wide carrying 40 or 60 longitudinal tracks recorded with multiplexed video and audio signals and providing about one hour playing time at 120 inches/sec, tape speed. The cartridge may alternatively contain a coil-less short loop, e.g. extending directly from arm 143 to guide 130, each track of which carries one, or a small number, of fields or frames.
Patent GB-827869-A (GB)
Title: A device for holding towels and the like
Inventor: BLAKE HAROLD
IPC: A47K10/14
Filed: 1956-08-29
Abstract: 827,869. Clamps. GARRICK ENGINEERING CO. Ltd. Nov. 25, 1957 [Aug. 29, 1956], No. 26351/56. Class 44 A device for holding towels or the like comprises a base element 10 adapted to be secured to a wall 13 and having a protrusion 15, the element 10 providing a mounting for an inverted hook or V-shaped arm 11 pivoted above and overhanging the protrusion so as to engage thereagainst, the surface of the arm 11 confronting the protrusion being provided with a serrated or otherwise treated surface 21 so that it will grip an article such as a towel between itself and the protrusion 15.
Patent GB-1003535-A (GB)
Title: Preparation of amine oxides
IPC: C07C291/04
Filed: 1964-06-25
Abstract: Amine oxides of tertiary aliphatic amines of the formula NR1R2R3, wherein each of R1 an R2 is a methyl or ethyl radical and R3 is a C10- 20 alkyl radical, are prepared by reacting aqueous hydrogen peroxide with the said tertiary aliphatic amine in the presence of a chelating agent comprising diethylenetriamine penta-acetic acid or an alkali metal or ammonium salt thereof.  Specification 989,420 is referred to.
Patent GB-590991-A (GB)
Title: Preparation of a starch substitute
IPC: C08B37/12
Filed: 1947-05-23
Abstract: A size is obtained by heating seaweed in water to 200 DEG F., filtering, concentrating the solution to 6 per cent by weight of solid matter, and then adding 94 parts by volume of water to 6 parts of the concentrate.
Patent GB-1443448-A (GB)
Title: Lubricated bearings
IPC: F16C33/10
Filed: 1973-06-04
Abstract: 1443448 Bearings BRITISH GAS CORP 4 June 1974 [4 June 1973] 26472/73 Heading F2A A bearing assembly comprises a rotary member consisting of a housing 1 with an opening 3 at one end and a bearing cup 4 fixed in the housing with its mouth directed towards the opening, and a stationary member 6 having a bearing part 7 which engages the bearing cup, and another part 8 extending from the bearing part through the opening in the housing. The housing is so shaped as to provide a lubricant space extending on both sides of a plane defined by the rim of the bearing cup. Means are provided for preventing the escape of lubricant through the opening as the housing rotates. The engaging surfaces of the cup and/or the stationary member may be provided with grooves 9 to pump lubricant between the surfaces when the housing rotates. An aperture 10 may be provided in the base of the cup to allow lubricant to recirculate. The two members may be biased towards one another by spring or gravitational loading. The housing is filled with such a quantity of lubricant that, on rotation of the housing, when the lubricant is thrown centrifugally outwards, lubricant is still able to enter the clearance between the bearing surfaces. Lubricant is retained in the housing by a cover 2 or other type of oil seal. The bearing cup may be part spherical or conical or frusto-conical. One or both of the bearing surfaces may be coated with PTFE.
Patent GB-241929-A (GB)
Title: Improvements in and relating to percussion fuses for projectiles
IPC: F42C15/22
Filed: 1925-05-06
Abstract: 241,929. Pantoflicek, B. May 6, 1924, [Convention date]. Projectile fuzes. Anti - friction devices such as balls 7, Fig. 2, or pivoted weighted levers 10, Fig. 3, are eccentrically arranged to help the striker 5 on impact by the combined action of inertia and centrifugal force. The balls 7 are maintained in a cylindrical or conical recess 8 during flight, but on impact pass into a widening conical chamber 3, where the radial movement of the balls under centrifugal force helps the forward movement of the striker 5. The pivoted levers 10 are similarly maintained in the .safe position shown during flight, but on impact pass their dead centres and swing out under centrifugal force, helping the striker 5. These pivoted levers may be replaced by weighted spring blades.
Patent GB-788287-A (GB)
Title: Improvements in or relating to electrical component strip assemblies
Inventor: BRUFORD ALBERT
IPC: H04Q1/14
Filed: 1956-08-30
Abstract: 788,287. Two-part couplings ; terminal boards. STANDARD TELEPHONES & CABLES Ltd. Aug. 30 1956 No. 26520/56. Class 38 (1). In a component-or as shown a plug-strip the components or plugs 11 are retained in slots 2, 10 in and by two resilient plastic strips 1, 9 respectively the retainer strip 9 having cam shoulders 12, 13 which snap into slots 7, 8 in strip 1 as the strip 9 is pushed into a recess in strip 1 and over the plugs assembled in the slots 2 in the latter strip.
Patent GB-191166-A (GB)
Title: Improvements in or relating to means for stretching and pressing trousers and the like
IPC: A47G25/68
Filed: 1921-10-08
Abstract: 191,166. Robarts, G. C. Oct. 8, 1921. Combined presser and stretchers; trouser stretchers.-In a toggle type of stretcher the top members A, a are pivoted to side arms B, F, the bottom members are pivoted to side arms C, E and slotted connections at G and J respectively alllow of the top and bottom pair of members pivoting on one another. A plate H attached to the arm C serves as a stop. The top and bottom boards may be extended to form a press or loose boards may be used.
Patent GB-225026-A (GB)
Title: Improvements in water tube steam boilers
IPC: F22B21/12
Filed: 1923-10-25
Abstract: 225,026. Evans, C. Oct. 25, 1923. Water-tube boilers. - A boiler has two lower drums 3, 4 and two upper drums 1, 2 connected together by straight tubes and arranged in such a manner that the tubes connecting the front upper with the two lower drums enclose between them the primary combustion chamber 9, and the tubes connecting the back lower drum with the two upper drums enclose between them a secondary combustion chamber 10. The upper drums are directly connected by straight tubes 12. A third upper drum arranged beyond the drum 2 may be so connected by straight tubes to the lower drum 4 as to form a further secondarv combustion chamber. Specification 8215/04 is referred to.
Patent GB-964615-A (GB)
Title: Improvements in and relating to the ventilation of saloon motor cars
Inventor: PETHER ALAN FRANK
IPC: B60H1/24
Filed: 1962-07-11
Abstract: 964,615. Vehicle roofs. PRESSED STEEL CO. Ltd. July 10, 1963 [July 11, 1962], No. 26669/62. Heading B7B. An opening closable by a pivoted cover 17 is formed in a reduced pressure part of a vehicle roof and communicates with a trough 13 having an opening 14 so that when the vehicle is in motion air is extracted from the interior of the vehicle. External openings may be provided in the rear quarter pillars and communicate with nozzles to direct air to rear seat passengers or to demist the rear window.
Patent GB-430133-A (GB)
Title: Improvements in and relating to welding apparatus
IPC: B23K9/028
Filed: 1934-09-17
Abstract: 430,133. Uniting by fusion. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Sept. 17, 1934, No. 26689. Convention date, Sept. 19, 1933. [Class 83 (iv)] The curved nozzle 21 of an electric arc or gas &c. welder carries guide wheels 20, 31 pressed together by spring 35 to grip and move along a guide track 12 of approximately the same shape as the seam to be welded so that the nozzle follows the seam, while to keep the inclination of the nozzle to the seam constant, even after turning a corner, the guide wheel 31 is anchored by links 32, 33 and set-screw 34 to the nozzle to turn it. The guide frame 27 is curved at the corners to the radius of the wheel 20 to keep the nozzle on the line of the seam. The guide wheel 20 is rotated by a worm 23 driven by a rod 25, gearing 26 and a motor with control 29. 11 is the work. The welding-head is mounted on a carriage 14 adjustable along an overhung frame 28 pivoted on a pillar 16. The frame 28 is adjusted for height on the pillar by balance weights inside the pillar, supporting the weight of the frame by chain and pulley 18, 19. The inclination of the nozzle is adjustable by a screw 39. Specification 431,747 is referred to.
Patent GB-689127-A (GB)
Title: Improvements in or relating to collapsible struts for supporting pictures, showcards, calendars and the like
IPC: A47G1/14
Filed: 1950-11-02
Abstract: 689,127. Struts for picture frames &c. JOHNS. SON & WATTS, Ltd., [trading as FORDHAM & CO.], and HUBBARD, R. H. Nov. 2. 1950, No. 26733/50. Class 52(iii) A collapsable strut arrangement comprises a member 1 with creased hinges 2, 3 which is secured to the picture or the like between the creases the upper part being bent about the hinge 2 to form the strut and having a slot 5 to slidably receive the lower tab which forms a locking member. A central tongue 6 in the slot 5 engages a slot 9 in the locking member to hold the strut. Cuts 7, 8 at the end of the slot 5 permit the desired flexibility to allow easy collapsing of the device. Modified forms of engaging means between the strut and locking member are described.
Patent GB-1435784-A (GB)
Title: Catalyst material for the preparation of saturated ketones from olefins
IPC: C07B61/00
Filed: 1973-06-05
Abstract: 1435784 Ketones STAMICARBON BV 5 June 1973 [12 June 1972] 26771/73 Heading C2C [Also in Division B1] Saturated ketones are prepared by contacting a mixture of an olefin, steam and optionally oxygen with a supported catalyst consisting of tin oxide, molybdenum oxide and at least one alkali metal compound or alkaline earth metal compound on a support, the catalyst containing 0À5 to 2-5% wt. alkali or alkaline earth metal based on the catalyst support. The specified conversions are propylene to acetone and butylene to methyl ethyl ketone and pentene, cyclohexene, cyclo-octene and cyclododecene are also mentioned as feeds. The examples describe conversions carried out at 250 C. with an olefin to steam volume ratio of 1 : 2 to 1 : 2À5.