baber/WOPTO huggingface dataset:
Patent GB-1377893-A (GB)
Title: Magnetron
IPC: H01J23/10
Filed: 1973-02-15
Abstract: 1377893 Magnetrons TOKYO SHIBAURA ELECTRIC CO Ltd 15 Feb 1973 [18 Feb 1972] 7398/73 Heading H1D In a multicavity magnetron having anode vanes 15, and an axially extending antenna 21, conduction of heat from the anode to the ferrite magnets 25, 26 is reduced by the use of magnetic shim plates 22 and 23 which contact the magnets only at the pointed projections 24, which may be 0À5 to 1 mm. high. Cooling air is blown through the radiator 16, the gaps between the shim plates and the magnets, and the perforated housing 32 for coil 30 and capacitor 31, provided to reduce leakage of radiation.
Patent GB-769363-A (GB)
Title: Improvements in devices for supplying water to the working faces of ploughs
IPC: A01B15/02
Filed: 1955-03-14
Abstract: 769,363. Agricultural implements. FORCE, S. March 14, 1955 [March 20, 1954], No. 7420/55. Class 6(1). The bolts 5 for connecting a plough share 2 and mouldboard 3 to a plough beam 4 are provided with a central conduit 8 connected to a water container for supplying water to the mouldboard to facilitate the action of the plough in heavy soils. As shown the bolt 5 is provided with a nut 7 to which is fixed a hollow connector 9 which is connected to a flexible hose 10. In a modification the connecter 9 is formed with a tapped hole for the reception of a short pipe which is connected to the hose 10. A small cavity shaped as a sector of a circle is formed in the head of the bolt 5 to prevent earth blocking the conduit 8.
Patent GB-699471-A (GB)
Title: Rocket apparatus
IPC: F02K9/48
Filed: 1951-03-30
Abstract: 699,471. Jet propulsion plant. SOC. D'ETUDE DE LA PROPULSION PAR REACTION. March 30, 1951 [May 13, 1950], No. 7478/51. Class 110(iii) A rocket, using non-hypergolic fuels which are supplied to the combustion chamber by pumps driven by a turbine, has an ignition chamber fed with hypergolic fuels which. is connected at one end through a passage of reduced cross-section to the combustion chamber and at its other end with the inlet to the turbine. The rocket combustion chamber 1 is connected through a neck 2 to a ignition chamber 3. A non-hypergolic combination of fuels is injected into the combustion chamber 1 through the openings 4, 5. These fuels are ignited by combustion gases generated in the ignition chamber 3 by the combustion of hypergolic fuels injected through the openings 6, 7. The chamber 3 is connected to the inlet of the turbine through a passage 8 having a restricted discharge opening. After starting, the supply of the hypergolic fuels is cut off and a part of the gases generated in the chamber 1 fed to the turbine through the passage 2, chamber 3 and passage 8. A liquid such as water may be injected into the gases flowing through the passage 8 to the turbine.
Patent GB-1175747-A (GB)
Title: Improvements relating to Intensifying Metallic Layers into Image Layers Comprising Semiconductor Material
IPC: H01L21/00
Filed: 1967-02-16
Abstract: 1,175,747. Intensification of metal particle images. PHILIPS GLOEILAMPEN FABRIEKEN N.V. Feb. 16, 1967 [Feb. 19, 1966], No.7527/67. Heading G2C. A layer of metal particles distributed in or on a support in the form of a latent or visible image is intensified so as to form a visible image of semi-conductive material by contacting the layer with an aqueous alkaline solution containing a salt of lead or cadmium, together with thiourea and/or selenourea and/or as N-substituted derivative of thiourea or selenourea egallyl thiourea.
Patent GB-538935-A (GB)
Title: Deposition former and process for the production of rubber bathing suits
IPC: B29D99/00
Filed: 1940-04-29
Abstract: 538,935. Moulding rubber bathing-costumes by dipping. INTERNATIONAL LATEX PROCESSES, Ltd. April 29, 1940, No. 7636. Convention date, May 1, 1939. [Class 87(ii)] A deposition former for producing backless rubber bathing suits has one part A<SP>1</SP> substantially the shape of that portion of the human body lying between a section through the thighs and a section through the waist and another part B' the surface of which between the front waist line and back waist line of the first part conforms substantially to the surface of the human pectoral region from the front waist line to the neck. After deposition the rubber is cut along the lines C<SP>1</SP> to produce the shape shown in Fig 4, with no waste, straps D being attached.
Patent GB-801652-A (GB)
Title: Improvements in or relating to the manufacture of cement
Inventor: WALSH CONRAD LAWRENCE
IPC: C04B24/36
Filed: 1954-03-16
Abstract: Cement is made water-repellent during storage by the addition during or after the grinding stage of its manufacture, of a minor proportion of low temperature carbonaceous oil product derived from a waxy distillate of Middle Eastern crude oil, of boiling point 150 DEG -400 DEG C.  Preferred amount is 0,01 to 2 per cent.
Patent GB-280845-A (GB)
Title: Improvements in presses
IPC: B30B9/26
Filed: 1927-03-19
Abstract: 280,845. Andersen Co., V. D., (Assignees of Anderson, R. T.). Nov. 16, 1926, [Convention date]. Extrusion presses. - The shell of a press, which is formed in two sections of longitudinal bars 2 held in position by shoe-bars 6, 7 and keys 8 within recesses in transverse rib-like members 3, 3<a>, is supported on crossways 10, 10<a>, secured to the main frame, on which the end members 3, 3<a> rest. The two halves of the shell are drawn together by bolts 11, 12, intermediate the members 3, and which connect longitudinal bars 13 - - 16, engaging flat bearing faces at the upper and lower ends of the members 3. The shaft 19 extends beyond both ends of the shell. At the inlet end it is keyed to a sleeve 20 to which is fixed a driving-wheel 23 and a sprocket wheel 24 which may drive moving parts of apparatus for heating the material to be pressed. Keyed to the shaft 19 is also a sleeve 25 carrying a feed worm 26 beneath a supply hopper 18, sleeves for pressing-screws 30, and a sleeve 32, extending through the discharge opening the size of which can be regulated by radially adjustable jaws 33. The shaft also carries a sleeve 39 extending through a casting 38 to a hollow box 40, which serves as a drainage chamber for any fluid which may be forced along between the sleeves and the shaft. A collar formed by straps 60. which can be adjusted longitudinally, serves to break up the cake within the casting 38. Rollers 49, 52 form radial and thrust bearings respectively. With thrust bearings for the shaft at the outlet end the shaft is under tension and the press is stated to work more smoothly. The frame of the press is provided with a trough 63 having a channel 64 and a screw conveyer 65 which serves to mix together foots and liquid passing from the press.
Patent GB-559456-A (GB)
Title: Improvements in or relating to couplings
IPC: F16L37/107
Filed: 1942-06-06
Abstract: 559,456. Pipe couplings. THOMPSON PRODUCTS, Inc. June 6, 1942, No. 7741. Convention date, Jan. 9. [Class 99 (i)] Coupling members 11, 12 on the pipe ends carry sleeves 13, 14 which are rotated to couple the members together and open a passage through the joint, each member being closed by its sleeve when the coupling is disconnected. The sleeves have discs 13c, 14c with ports 31 which are out of register with inclined passages 21 in the coupling members when the sleeves are secured to the members by claws and lugs 25, 35. The sleeve 14 also has claws 42 which engage in slots 38 in the sleeve 13 and behind the lugs 25 to secure the coupling when the sleeves are rotated together to bring the ports 31 into register with the passages 21.
Patent GB-937039-A (GB)
Title: Asymmetrical photographic objective
IPC: G02B13/00
Filed: 1960-03-04
Abstract: 937,039. Optical objectives. CARL ZEISSSTIFTUNG, [trading as C.ZEISS, [Firm of]]. March 4, 1960 [March 11, 1959], No. 7805/60. Class 97 (1). A four component objective comprises two inner meniscus shaped components enclosing the diaphragm, these components being of positive power, the front component being of negative power and the rear outer component being of positive power, wherein Optical data are given for one example of the objective shown.
Patent GB-473596-A (GB)
Title: Torsional shock-absorbers
IPC: F16D13/68
Filed: 1936-03-16
Abstract: 473,596. Flexible couplings. STANLEY, G. E. March 16, 1936, No. 7822. [Class 80 (ii)] A torsional shock-absorber comprises coacting inner and outer members, e.g. a hub 13 and a member 14 riveted to a clutch-plate 16, which members provide chambers receiving V-like springs 19, between the outwardly extending free ends of which are disposed initially cylindrical rubber blocks 21, which are compressed by the springs when relative angular movement between the hub and plate occurs. The chambers are closed at one side by the clutch-plate, and at the other by a plate 17, riveted at 18 to the clutch-plate and outer member 14. The Provisional Specification states also that the free ends of the springs may be inwardly curved around the blocks. Specification 417,629 is referred to.
Patent GB-101457-A (GB)
Title: Improvements in Cardboard or the like Boxes.
IPC: B65D5/66
Filed: 1916-06-05
Abstract: 101,457. Crawford, T. and Packer & Co., H. J. June 5, 1916. Addition to 11671/15. Lids and covers.-The box described in the parent Specification is modified by continuing the channel-like seating a of the front wall along the sides, and the rib b of the lid is continued along its side edges.
Patent GB-788099-A (GB)
Title: Improvements in and relating to hearing aids
Inventor: CARLING FRANCIS ROCK
IPC: H04R25/02
Filed: 1954-03-18
Abstract: 788,099. Delivering contents of containers. FORTIPHONE, Ltd. March 16, 1955 [March 18, 1954], No. 7967/54. Class 18. [Also in Groups XX, XXXIX and XL(c)] A container 22 for miniature electric batteries 18<SP>1</SP> comprises a spring 23 urging the batteries to one end and an ejector spring 25 for delivering them one at a time to a hearing aid 12 when the container and aid are brought together.
Patent GB-294091-A (GB)
Title: Improvements in and relating to pencil sharpening devices
IPC: B43L23/08
Filed: 1928-03-15
Abstract: 294,091. Steinbach, H. March 15, 1928. Pencil sharpeners.-In pencil sharpeners of the kind using a two-edged blade, more particularly a used safety-razor blade, the blade n is mounted upon a support g provided with a conical recess o into which one edge of the blade projects, while the ether edge protrudes through a slot in the flat upper surface of the support to enable the pencil to be trimmed upon it. The blade is held upon an inclined surface k by a plate secured by a nut m on a screw in the support. The device is preferably hingedly mounted upon a frame d secured within a box a provided with a hinged lid b, the upper edge e of the frame providing at one side a support for the pin upon which the member is hinged, and at the other side a seating for the member g. A chamber p for spare blades is provided in the body of the member g.
Patent GB-980515-A (GB)
Title: 7-substituted pyrrolo[2,3-d]pyrimidines
IPC: C07D487/04
Filed: 1962-03-01
Abstract: The invention comprises 7-substituted-4-chloropyrrolo[2,3-d]pyrimidines in which the 7-substituent is 2-cyanoethyl or 2-alkoxycarbonylethyl and in which there may be a 2-alkyl group, the alkoxy and alkyl groups having 1-4 carbon atoms; and their preparation by an addition reaction under conditions of basic catalysis between the corresponding 7-unsubstituted compound and acrylonitrile or an alkyl acrylate. The preparation of the compounds and derivatives thereof is illustrated in the following reaction scheme, where R is hydrogen or alkyl (e.g.) methyl), R1 is alkyl (e.g. ethyl) and R11 is alkyl or aralkyl (e.g. benzyl):  <FORM:0980515/C2/1> 7 - (2 - Carboxyethyl) - 4 - dimethylamino - 2 - methyl - pyrrolo [2,3-d] pyrimidine is prepared from the 4-chloro-compound and dimethylamine.  7 - (2 - Carboxyethyl) - 4 - mercapto - 2 - methyl - pyrrolo [2,3-d] pyrimidine is prepared by reacting the ethyl ester of the 4-chloro-compound with thiourea and hydrolysing the mercaptoester.  7 - (2 - Cyanoethyl) - 2 - methyl - 4 - (4 - methylpiperazino) - pyrrolo [2,3-d] pyrimidine is prepared from the 4-chloro-compound and 1-methylpiperazine. Its dihydrochloride is described.  7 - (2 - Carbamoylethyl) - 4 - benzylamino - 2 - methyl - pyrrolo [2,3-d] pyrimidine is prepared by alkaline hydrolysis of the 7-cyanoethyl-compound, and yields the acid.  7 - (2 - Carboxyethyl) - 4 - dimethylamino - pyrrolo [2,3-d] pyrimidine is prepared from the ethyl ester of the 4-chloro-compound by reaction with dimethylamine and acidification.  Specifications 812,366 and 915,304 are referred to.
Patent GB-1117345-A (GB)
Title: Ultra-sensitive photo-electric contour probing device
IPC: G01B11/00
Filed: 1966-02-23
Abstract: 1,117,345. Photo-electric contour sensing. W.H. FENGLER. Feb.23, 1966 [ March 8, 1965], No. 8028/66. Heading G1A. [ Also in Divisions G2 and G3] A probing device for contour sensing comprises a casing containing a fixed reflector, a moving reflector tiltable by a probe member extending out of the casing and a collimator directing a beam of light via the reflectors to at least two photocells, one of the reflectors dividing the beam so that in the zero position of the probe member the photo-cells are equally illuminated. In an embodiment where the probe is fed along one co-ordinate and follows the model transverse to that coordinate, the probe 56, Fig. 3, which contacts the model, rotates the mirror 70 about an axis 64 by means of a rack and pinion. Light from a collimator 132, Fig. 2 (not shown) is reflected by mirror 70 and divided by a prism 94 having silvered or aluminised surfaces 96-98 to fall on two photo-electric cells 144, 146. When displacement of the beam 102 by mirror 70 reduces the illumination on one of the cells 144, 146, a corresponding thyratron or solid state equivalent 208, 219 Fig. 5 fires, drawing current in pulses from a frequency converter 203 through a stepping motor 211 or 215. These motors drive the probe in opposite senses to follow the surface of the model, and at the same time slave motors 196, 197 drive a drafting machine or a slave mill to follow the movements of the probe. If the beam 102 deviates too much, one or other of photo-resistors 148, 150 is energized to pass a signal through a corresponding AND gate 224, 226 to reduce the feed speed and so allow the transverse movements of the probe to catch up. If the beam deviates further so that it misses the beam divider altogether, neither 144 nor 146 is illuminated and the probe is stopped. A swinging arm feeler may be used in place of the reciprocating feeler 56 Fig. 4 (not shown). In an embodiment for following a model in two coordinates, Fig. 6, the feeler is in a universal mounting, and coupled to a conical mirror 299 which acts as the beam divider. Light reflected from mirror 299 is directed by an annular reflecting prism 300 on to four photo-electric cells 301, 303 &c. Opposite pairs of cells are in circuits similar to that of Fig. 5. The slowing down and stopping of the apparatus is effected by a ring of 8 photo-resistors 333, 338 &c. and an associated logic network.
Patent GB-610025-A (GB)
Title: Improvements in and relating to luminescent materials
IPC: C09K11/08
Filed: 1945-03-29
Abstract: A halogen phosphate of one or more bivalent metals used as a luminescent material has at least half of the metal atoms of barium and at least half of the halogen atoms of fluorine or chlorine or a mixture of fluorine and chlorine.  Examples described are barium fluoro-phosphate in which the barium fluoride may be partially or completely replaced by barium chloride, barium-strontium fluoro-chloro-phosphate and barium-calcium fluoro-chloro-phosphate. Methods of preparing the constituent materials are described.  In order to prepare barium fluoride 244 grams of barium chloride are dissolved in 1 litre of hot distilled water to form solution A.  100 grams of ammonium fluoride are dissolved in 250 mls. of hot distilled water to form solution B.  10 mls. of solution A are added to solution B, and 10 mls. of solution B are added to solution A.  The resulting liquids are filtered and the filtrates are mixed.  The precipitate is separated by filtration, washed six times with hot distilled water, dried at 160 DEG  C. and ground.  Strontium fluoride may be prepared in an analogous manner.  To prepare barium phosphate 1180 grams of barium carbonate are mixed into a slurry with 1500 mls. of cold distilled water to form C.  255 mls. of ortho-phosphoric acid are diluted to 500 mls. with cold distilled water to form solution D. C is added to solution D slowly and with constant stirring.  When effervescence has ceased, the liquid is filtered, the precipitate is dried at 160 DEG  C. and ground.  Strontium phosphate can be similarly prepared.  Manganese phosphate can be prepared by dissolving 396 grams of di-ammonium hydrogen phosphate in two litres of boiling distilled water to form solution E.  594 grams of manganese chloride are dissolved in 3 litres of distilled water to form solution F.  10 mls. of solution E are added to solution F and 10 mls. of solution F to solution E; the resulting liquids are filtered and the filtrates mixed.  The precipitate is separated by filtration, washed with boiling distilled water, and dried at 160 DEG C.  The dried product is ground.  Calcium phosphate and fluoride may be prepared as described in Specification 578,192, [Group XL]. Specification 580,363, [Group XL], also is referred to.
Patent GB-637349-A (GB)
Title: Improvements in optical projection apparatus
IPC: G03B21/26
Filed: 1948-03-18
Abstract: 637,349. Optical - projection apparatus. KONIG, J. F. March 18, 1948, No. 8100. [Class 97 (i)] In a portable projector for still pictures in the form of transparencies which comprises a lantern casing embodying an optical projection. system and provided with a handle to enable the casing to be carried in one hand, the optical projecting system includes an objective lens and a condensing lens arrangement which comprises two spaced lens components and is held between the objective lens and an electric lamp, and the walls of the casing are provided with aligned slots and/or guides at right angles to a vertical plane containing the optical axis of the projection system and of a form to receive a transparency either with or without a carrier therefor and to enable the transparency to be moved between the condensing lens components whereby projection may be effected. In the form shown, the projector comprises a frusto-conical casing 1 and a semispherical casing 2 removably attached to the casing 1 at 6. The casing 1 carries a tube 5, in which frictionally fits a holder 4 for an objective lens 3 and also carries a sub-frame 24 which supports one end of the tube 5 and also supports the spaced condensing lenses 9 between which is mounted a channel-shaped guide through which a transparency may be moved, this guide being aligned with slots 25 on either side of the casing 1 whereby the transparency is introduced into the guide. The casing 2 is in the form of a reflector and carries a bracket 8a in which a lamp bulb 7 may be screwed. Bracket 8a also carries electrical terminals 10, 11 of which terminal 10 is connected to the casing 2, while terminal 11 contacts the terminal 12 of a battery 13 which is disposed in a hollow handle 14 forming a rigid projection from the casing. Terminal 12 projects through apertures in an insulating plate 16 and a wall 17 of the casing 1. Riveted to the plate 16 is a terminal 19 of a switch, the other terminal 20 of which is riveted to the handle at 21 and is adapted to be pressed into engagement with terminal 19, which is also connected to the terminal 18 of the battery 13, by movement of a projection 22 on the terminal when the handle 14 is gripped. Other forms are described wherein the handle is collapsable into or on to the casing and wherein the bulb is energized from an external supply connected with the lamp bulb through the bracket 8a and the terminal 10. Also, a friction roller may be provided adjacent one of the slots 25 in the casing 1 so as to receive the transparency or to assist the passage thereof through the channel-shaped guide.
Patent GB-1434682-A (GB)
Title: Driving circuit for a stepping motor of a timepiece
IPC: G04C3/16
Filed: 1974-02-22
Abstract: 1434682 Electronic watches DAINI SEIKOSHA K K 22 Feb 1974 [7 March 1973] 8235/74 Heading G3T [Also in Division H2]  A circuit for driving a timepiece stepping motor M by pulses which are derived from a clockpulse generator CP comprises means for detecting the end of each rotary step of the motor and feeding a corresponding signal E back into the circuit to  terminate the respective pulse applied to the motor and thus conserve battery energy, and means for placing a low impedance across the motor terminals between steps to provide a holding torque. As shown the coil of motor M is in a bridge circuit using complementary F.E.T.s and connected across supply V DD -V SS  in series with a resistor R. The gates of the F.E.T.s are connected to respective outputs Q 1 , Q 2  of flip-flops F 1 , F 2  which receive antiphase timing pulses A, B e.g. of 1 Hz from the last divider stage of the generator CP. The current drawn by the motor through resistor R produces a voltage impulse C which is amplified and differentiated to give signal D. This is inverted giving a signal E at each instant (P1) Fig. 2, (not shown) when the motor completes a step, this signal being applied to reset terminals Rt of F  1  and F 2  which therefore produce abbreviated pulse outputs F, G and the motor receives an alternating pulsed voltage H. When the rotor of the motor is stationary, the coil M is short-circuited through the F.E.T.s.
Patent GB-1357472-A (GB)
Title: Ultrasonic welding
IPC: B23K20/10
Filed: 1972-02-23
Abstract: 1357472 Seaming non-metallic sheet material GENECO Inc 23 Feb 1972 [9 March 1971 25 Aug 1971] 8293/72 Heading B5K [Also in Division B8] Apparatus for ultrasonically welding the ends of synthetic plastics tubes comprises an ultrasonically vibratable tool 1 having protuberances 2; a block 3 having grooves 4 of complementary shape to the protuberances 2, the profile of the protuberances 2 and the grooves 4 being such that, by the welding operation, the ends of the tubes are given a V-section 5 which is inscribed in the initial outer circumference of the tubes; and a guide 6 spaced from the block 3 and having grooves 7 aligned with the grooves 4 so that the tubes may be correctly aligned with the block 3. In one embodiment, Fig. 1, tubes, filled with an animal seminal fluid, are disposed along the grooves 4, 7 with the ends to be welded flush with the outer surface of the block 3. The tool 1 and a pressure member 8 having a rubber cushion 9 are lowered so that the cushion 9 presses the tubes into the grooves 7 and the tool 1 effects welding, the guide 6 preventing propagation of the ultrasonic vibrations along the tubes. An adjustable spring may urge the tool 1 downwardly. A cam operated switch may be provided to adjust the time of production of the vibrations whilst the tool 1 is in the lower position. In another embodiment, Fig. 3, the apparatus comprises rotatable cylinders 17, 18 carrying four rubber belts 19 having grooves 21 and ribs 22. The grooves 21 of the four belts are aligned by a fluted driving drum which is driven intermittently. Tubes 14 are fed singly down a tray 11 and drop into temporarily "opened" grooves 21 as they pass around the cylinder 17. As the belts 19 pass along the rectilinear part of their upper run, the tubes 14 are squeezed between adjacent ribs 22. At filling and suction stations 12, 13, respectively, needles 23, 24 penetrate into the ends of the tubes. The needles 23 are connected to a liquid source to fill the tubes and, simultaneously, the needles 24 are connected to a suction source. At the same time, two already filled tubes are disposed beneath an ultrasonic welding tool 15. The tool 15 moves down and a complementary-shaped block 16 moves upwardly to effect welding, the ribs 22 preventing propagation of vibrations along the tubes. In a modification (not shown), both ends of each tube are welded simultaneously.