baber/WOPTO huggingface dataset:
Patent GB-843024-A (GB)
Title: Improvements in and relating to crane structures
IPC: B66C13/18
Filed: 1957-09-27
Abstract: 843,024. Lever load-handling machines; jib cranes. BRITISH HOIST & CRANE CO. Ltd., and EVANS, P. N. Sept. 26, 1958 [Sept. 27, 1957], No. 30341/57. Classes 78 (3) and 78 (4). The telescopic jib 44, 45 of a mobile crane is luffed and slewed about a universal joint 42 by two independently-operable hydraulic rams 50, 51 pivoted between the jib and the chassis, the outer end of the jib being adjustable to any position within the limits shown in chain lines in Fig. 2. The jib section 45 is provided with a load hook H and is extended by means of an hydraulic ram (not shown) within the section 44. A second load hook 49 is supported by a cable 47 connected to an hydraulic winch 46.
Patent GB-1371966-A (GB)
Title: Method of controlling electronic xwitches in a c  measuring circuits and an ac bridge employing the method
IPC: G01R17/00
Filed: 1972-06-28
Abstract: 1371966 Gating circuits ORDENA LENINA INSTITUT PROBLEM UPRAVLENIA 28 June 1972 30342/72 Heading H3T [Also in Division G1] Leakage current through an A.C. electronic switch circuit when off is reduced by applying a voltage equal to that across the circuit to the input electrode of the switch, in the same phase. In the measuring bridge shown in Fig. 2 switching transistors 21 connect resistors 17, 18 between points a and c. The A.C. voltage across these points is applied via an emitter-follower 32 to the base electrode of the switching transistors so that when the transistors are biased off the base electrode potential varies with the A.C. voltage and leakage current is reduced. The bridge has diagonal terminals a, b, c, d and is arranged to measure digitally the capacitance, inductance or resistance of a device 9 connected between a, d. Arm b, d is for capacitance and resistance range switching and arms a, c and b, c are balancing arms in which respectively resistors 17, 18 &c. are selected by transistors 21 and capacitors 19, 20 &c. are selected by transistors 22. Inductance can also be measured. The unbalance of the bridge is amplified at 27 (top right) and fed to digital circuits 28 controlling the bridge arm switching and indicating circuits 29, 30, 31. Compensation is provided as follows:-(a) the leakage through transistors when "off" is reduced by emitter follower feedback as described above. Similar correction for resistors 36 in arm bd is provided by emitter-follower 32 from contact 46. (b) Resistors 47 and 48 in arm bc equalize the "on" resistance of the selected transistors and this resistance, together with the loss resistance of the capacitors, is compensated by feedback via resistor 49, one of the emitter followers 32 and transformer winding 41 or 43, the feedback effectively providing negative resistance. (c) Resistors 50, 51 in the range switching arm bd equalize the conducting resistance of the associated transistors and this resistance is compensated by feedback from arm be via one of the emitter followers, transformer winding 44 and capacitor 56, correction derived from arm bc being possible as the voltage across it at balance is the same as across arm bc. (d) Resistors 11, 12 in arm db equalize the loss resistance of the range switching arm capacitors 13, 14 and this is compensated by feedback via one of the emitter-followers, winding 45 and capaci - tors 52, 53. (e) The capacitance of the leads 10 to the unknown impedance 9 is compensated by feedback via one of the emitter-followers, transformer 40, 41 (or 42, 43) and capacitor 58.
Patent GB-697713-A (GB)
Title: New methylolamides of di- and trialkylated pyridine dicarboxylic acids and a processfor the production thereof
Filed: 1951-12-28
Abstract: The invention comprises compounds of the formula <FORM:0697713/IV (b)/1> wherein R1 and R2 represent alkyl, aryl, or aralkyl radicals, R3 is a hydrogen atom or an alkyl, aryl or aralkyl radical and X represents a N-hydroxymethyl-carbamido group or a carboxyl group, and, where X has the latter meaning, salts of the said compounds and their preparation by reacting formaldehyde, preferably in an alkaline medium, with a compound of the formula <FORM:0697713/IV (b)/2> wherein Y represents a carbamido or carboxyl group.  Examples are given of the preparation of products of the formula set out above in which R1 and R2 are methyl, R3 is hydrogen or methyl.  Specification 690,071 is referred to.
Patent GB-521446-A (GB)
Title: Improvements in and relating to cellulose derivatives and to a process for producingthe same
IPC: C08B11/193
Filed: 1938-10-20
Abstract: 521,446. Cellulose ethers. REICHEL, F. H., and CORNWELL, R. T. K. Oct. 20, 938, No. 30417. [Class 2 (ii)] Cellulosic material dispersed or dissolved in an aqueous alkaline solution is etherified by adding to the dispersion or solution an etherifying agent and controlling the temperature so that it does not exceed 70‹C., the reaction being continued until a cellulose ether which is soluble at 0‹C. in aqueous sodium hydroxide solutions of 3 per cent. or less alkali concentration is obtained. The cellulosic material may be alkali cellulose or a low-etherified alkali-soluble cellulose ether which is soluble in sodium hydroxide solutions of more than 3 per cent. alkali concentration, e.g., 5 or 10 per cent. It may be a hydroxy alkyl cellulose ether. The starting material may be dispersed or dissolved in aqueous alkali solution of 5 to 10 per cent. strength. The alkali cellulose may be obtained from any natural form of cellulose or from a cellulose conversion product. It may be dissolved in 18 per cent. caustic soda by freezing and then thawing the mixture. The low-etherified cellulose ether may be an alkyl, hydroxy-alkyl, or mixed ether. The etherifying agent may be dimethyl sulphate, methyl sodium sulphate, ethyl chloride or bromide, an alkylene oxide or a halohydrin. The alkali may be sodium or potassium hydroxide, or an organic base such as dimethylamine or tri-benzyl methyl ammonium hydroxide. The etherifying agent may be added in solution or liquid form, and it may be added in small quantities over a period of several hours. The reaction should be stopped before the product is substantially soluble in water. Alkyl groups to the extent of 0.2 or hydroxyalkyl groups to the extent of 0.1 for each cellulose unit may be introduced. The products may be used in the production of artificial filaments, films, tubes, and other articles, or of adhesives, coatings, or sizes for textiles or paper, or as thickening. agents for pigments. They may be mixed with viscose, cuprammonium cellulose solutions, rubber latex, resins, gelatine, waxes, fats, or oils. Specifications 203,347 and 231,807, [both in Class 2 (ii)], are referred to.
Patent GB-1533945-A (GB)
Title: Method of attaching a separable bottom end stop to a pair of sliding clasp fastener stringers
IPC: A44B19/60
Filed: 1977-07-20
Abstract: 1533945 Sliding clasp fasteners YOSHIDA KOGYO KK 20 July 1977 [27 July 1976] 30437/77 Heading E2S In a method of attaching a separable bottom end stop 24 with pin 25 and box 27 to a pair of stringers with continuous filament elements 14, with filler cords 15, elements are removed from portions 29 of the tapes 11, 12 and these portions are then pressed and bent into contact with the exposed portions 30 of the cords by means of heated dies, the portions 30 being kept in alignment with the rest of the cords. The pin and box members 25, 27 are clamped over the compressed portions 29 such that the overall thickness of the end stop 24 is the same as the rest of the stringers.
Patent GB-1040907-A (GB)
Title: Improved self-sustaining switch circuit
IPC: H03K17/72
Filed: 1963-08-01
Abstract: 1,040,907. Semi-conductor pulse-generating circuits. SPERRY RAND CORPORATION. Aug. 1, 1963 [Aug. 10, 1962], No. 30495/63. Addition to 985,580. Heading H3T. In a circuit for energizing an inductive load by discharging a capacitor connected in a series circuit with a silicon-controlled rectifier and the inductive load through the load when the S.C.R. is fired, as described in the parent Specification the reversal of current flow in the inductor after one half-cycle of the discharge current switching the S.C.R. off to reset the circuit, a further inductor less-heavily damped than the inductive load is connected in parallel with the load so as to ensure an adequate overshoot to effect extinction of the S.C.R.
Patent GB-1034974-A (GB)
Title: Internally cooled welding dam and method of welding therewith
IPC: B23K9/038
Filed: 1964-08-04
Abstract: 1,034,974. Welding by fusion. AIR REDUCTION CO. Inc. Aug. 4, 1964 [July 19, 1963], No. 30495/64. Heading B3R. A melt retaining pad for use in vertical welding comprises a support 45 fastened to a melt engaging shoe 24, a broad cavity 25 between the support 45 and the shoe 24, sealing means 38 for sealing the cavity 25 and connections 40, 49 for passing coolant through the cavity. Projections 32 on the shoe 24 or support 45 prevent collapse of the cavity 25. The shoe 24 has a weld shaping recess 21, and is interchangeable with shoes having recesses 21 of various shapes. The pad is supported by castors to leave a space between the shoe 24 and the workpieces 76, 78 being welded. The support 26 is mounted on a vertical pivot 34 connected by a horizontal pivot 42 to arms 44 moved upwardly during welding.
Patent GB-801586-A (GB)
Title: Improvements in operating circuits for electric discharge lamps
Inventor: MANDL ARTHUR
IPC: H05B41/04
Filed: 1954-10-22
Abstract: 801,586. Supply systems for space-discharge lamps. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 13, 1955 [Oct. 22, 1954], No. 30538/54. Class 38 (4). In a circuit arrangement for starting and operating a C.P. fluorescent discharge lamp 2 in which a D.C. source 1 provides the lamp operating potential and an alternating potential pre-heats one electrode 5 of the lamp, the preheating circuit includes inductance 10 and capacitance 8 of such reactions as to be substantially resonant at the alternating potential frequency and the inductance 10 furthermore is series connected with the D.C. source 1 and lamp-discharge space so that, during starting, the potential drop created across the inductance by the flow of alternating current is added to the D.C. source potential to produce a lamp discharge initiating voltage. As shown the lamp is ballasted by a resistor 6, and there is operated in parallel with it one or more lamps 2, each having individual ballasting resistor 6<SP>1</SP> and pre-heating circuit components 8<SP>1</SP>, 10<SP>1</SP>. The inductance may form the primary winding of a transformer, the secondary winding 13 of which pre-heats during starting the other lamp electrode 41 which during operation is an anode. The source 7 of alternating potential may be a vibrator or a small alternator, and when the invention is used for traction vehicle lighting the D.C. source may be a battery or a motor generator set. The pre-heating circuits are controlled by normally open switches 9, 9<SP>1</SP>, shown as manually operable. Individual normannly closed switches 11, 11<SP>1</SP> permit interrupting the lamp discharges but if all the lamps are to be switched off simultaneously these switches may be replaced by a single switch, not shown, connected in either of the D.C. source leads 3, 3<SP>1</SP>. The Provisional Specification states that the alternating potential may be an intermittant potential.
Patent GB-1019710-A (GB)
Title: A microwave branching filter
IPC: H01P1/39
Filed: 1964-08-04
Abstract: 1,019,710. Circulators and filters. STANDARD TELEPHONES & CABLES Ltd. Aug. 4, 1964 [July 19, 1963], No. 30564/64. Heading H1W. A microwave channel-branching filter comprises a Y-circulator having a band-pass filter in the branch between the input and output branches. The circulator may comprise a Y- or (as shown) a T-junction and includes a ferrite disc 12 subject to the field of a permanent or electromagnet 25. The disc is preferably half the height of the guides forming the junction. Input energy from branch 14 within the passband of filter 16 is transmitted to the port 15<SP>1</SP> and energy outside this pass-band is transmitted to the port 19<SP>1</SP>. The filter comprises a number of sections each formed by two rows 17 of three posts, each section having a tuning screw 18. The Specification includes a discussion of the design requirements of the apparatus.
Patent GB-1483541-A (GB)
Title: Method of producing seamless steel tube
IPC: B21B23/00
Filed: 1975-07-22
Abstract: 1483541 Rolling tubes NIPPON STEEL CORP 22 July 1975 [23 July 1974 28 Dec 1974] 30588/75 Heading B3M In the production of seamless steel tubing from a billet 3-1, Fig. 5, of square or rectangular cross-section, the billet is initially guided by rollers 15-1 and 15-2 towards a pair of grooved work rolls 4 which roll the billet to round tubular form over a piercing plug 7. The workpiece may then be further reduced in plug mills 24, 25 and 26, Figs. 12b-12d. To ensure a uniform wall thickness of the tube during piercing, the positions of the guide rolls are controlled according to the sensed thickness of the tube in a horizontal and vertical plane. The thickness can be measured by measuring the temperature at different points around the tube, by using a radio-active isotope in the plug 7 and spaced Geiger counters, or by sensing the roll force or roll torque.
Patent GB-795032-A (GB)
Title: A process for the production of waterproof concrete, or cement-mortar, products
IPC: C04B28/02
Filed: 1954-10-25
Abstract: Cementitious products are waterproofed by adding water-soluble materials, which form insoluble compounds with the lime present, containing alkali metal hydroxide equal to the solids content of the soluble material, and sufficient of a soluble calcium compound to flocculate part of the soluble material.  Preferred hydroxide is that of potassium while the calcium compound is the chloride. This partly flocculated product can be dried and ground to powder, for convenience, and when required for use, is made into a paste and added to the cementitious material.  Specified materials for the additive and alkali silicates, aluminates and alkali metal soap solutions singly or in admixture, which may also contain fatty acids, alkali metal compounds of such acids or aluminium compounds. Accelerators may also be present.
Patent GB-437554-A (GB)
Title: Improvements in or relating to embroidery and embroidered articles
IPC: D05C17/00
Filed: 1934-10-25
Abstract: 437,554. Embroidery. FALK, L., 45a, Basinghall Street, London. Oct. 25, 1934, No. 30667. [Class 112] Pieces of embroidery or embroidered articles have applied to their underface an adhesive which in the normal cold condition does not present a sticky surface, but which becomes sticky if heated. By this means, ready-made embroidery is attached to plain fabrics. The adhesive may be a latex composition which is only sticky when hot.
Patent GB-416882-A (GB)
Title: Apparatus for dispensing, freeing from gas and filtering liquids
IPC: B01D19/00
Filed: 1933-11-06
Abstract: 416,882. Dispensing liquids. TECALEMIT, Ltd., Great West Road, Brentford, Middlesex. Nov. 6, 1933, No. 30844. Convention date, Nov. 4, 1932. [Class 102 (i).] In apparatus for dispensing petrol or other liquids, of the type in which a meter 6 is arranged at the suction side of the pump 1, a byepass 7 controlled by a float 28 is arranged between the suction pipe and the pump, in order to prevent passage of air through the meter. The suction pipe 16 discharges into a hollow bolt 12 and through perforations 27 into a chamber 11. The latter is secured to the float chamber 9 by the bolt 12. The liquid passes through filters 21, 22, held by a spring 26, and through the chamber 9 to the pipe 10 leading to the meter 6, while air escapes from the top of the chamber 9 by the passage 7. The openings of the pipes 7 and 10 are controlled by the float 28. Water passes through a filter 34 to a lateral chamber 32 and is drawn off through a passage 34A controlled by a cock 33 and a float 35 which sinks in petrol.
Patent GB-208172-A (GB)
Title: Method and apparatus for feeding glass
IPC: C03B7/08
Filed: 1923-12-10
Abstract: 208,172. Tucker, O. M., Reeves, W. A., and Beatty, J. M. Dec. 9, 1922, [Convention date]. Delivering molten metal.-A device for feeding charges of glass to a forming-machine comprises a forehearth having a delivery aperture in its base, a shearing-device beneath the aperture, an enclosed combustion cup for covering the, aperture after each cutting operation, and a reciprocating plunger for assisting the extrusion of the charge at the proper time, means being provided for adjusting independently the operating-period of each element in order to regulate the weight and shape of the charges. The feeder is shown in end elevation in Fig. 1, and comprises a forehearth 1 in the floor of which the delivery aperture is formed, a removable bushing being fitted to control the size and shape of the aperture. The plunger 6, which accelerates the extrusion of the metal through the aperture, is reciprocated vertically above the aperture by a piston in a cylinder 56, the plunger being carried by an arm 14 on a rod 21 which is secured to the piston. A coldischarging-aperture and consists of blades which are operated by a compressed-air cylinder. There is also mounted beneath the aperture a cup 177 to which a combustible mixture is introduced in the manner described in Specification 121,971. This mixture burns under pressure for a predetermined time after each severing-operation, and serves to cap the aperture and support the stub end of the glass by the pressure of the burning gas. The cup is moved vertically and horizontally to clear the aperture when a charge of glass is being extruded, and is operated in proper timed relation by a compressed-air cylinder. The timing mechanism, which controls the supply of compressed air to the various operating-cylinders and the supply of gas and air to the combustion cup, is contained in a box-like casing 180 and comprises a shaft 191 driven by a motor 192. Secured to the shaft are cam plates 194, Fig. 3, and with each is associated another cam-plate 195 that is mounted loosely on the shaft 191. Bevel wheels 196 are secured to each plate, and the wheels of each pair are connected by a bevel pinion 197 lar 7 enables the plunger to be centred in relation to the aperture. A hand wheel 42 regulates the depth to which the plunger descends in the metal in the forehearth, and a nut 51 regulates the length of the stroke of the piston and the plunger. The shearing-device 175 is situated immediately beneath the which is carried by a block 199 loosely mounted on the shaft 191. The block 199, and therefore the pinion 197, can be turned about the shaft by means of a hand-wheel 200, so that the disc 195 can be advanced or retarded with respect to the disc 194 by turning the hand-wheel. Rollers 201 secured to the plates operate poppet valves contained in casings 202, 203, 223, 206. These valves control the admission and exhaust of compressed air to and from the different operating- cylinders, so that the timing of the various operations can be regulated, while the feeder is working, by means of the hand-wheels.
Patent GB-890512-A (GB)
Title: Improvements in or relating to internal combustion engines
IPC: F02B75/04
Filed: 1958-09-30
Abstract: 890,512. Two-stroke and four-stroke engines; driving-gear; spray carburetters; starting. GARCIA DE LA PARA, G.J.M.G. Sept. 30, 1958 [Oct. 1, 1957], No. 31228/58. Classes 7(2), 7(3) and 7(5). To give two crank-shaft revolutions for every complete piston reciprocation, connecting rods 21, 7, Fig. 1, on the working piston 20 and crank-shaft 8 are interconnected by a fixedly fulcrumed rocker 24 which swings to either side of the line connecting the rocker and crank-shaft axes. The firing (and, in the four-stroke engine shown, induction) strokes thus take more than a crank-shaft revolution and so are longer in duration than the compression (and exhaust) strokes. To assist the rocker 24 to leave the dead centre A in the correct direction on starting, it is acted on through buffer springs (not shown) by an arm 29 connected via a link 25 to a crank disc 26 driven at twice crank-shaft speed from a camshaft 28; alternatively or additionally a free or resiliently loaded eccentric pin connection may be used between the rocker 24 and the rod 21 or 7. Instead of the arm 29 the link 25 or disc 26 may have spring means, or friction means may be used. In a two-cylinder four-stroke engine, the rods 21, Fig. 14, may be connected as shown. Fig. 15 shows a twostroke engine having a pump piston 10 supplying air to two working cylinders one only of which is shown; a carburetter preceded by a one-way valve may be incorporated in the transfer passage 57. In Fig. 17 (not shown) opposed pistons of a two-stroke fuel-injection engine are connected in the manner of the invention to individual crank-shafts which are intergeared.
Patent GB-842579-A (GB)
Title: Improvements in or relating to level indicator devices
Inventor: JAMES ERNEST CONACHER STANLEY
IPC: G01F23/18
Filed: 1957-10-07
Abstract: 842,579. Indicating and controlling liquid levels. BLAW KNOX Ltd. Oct. 2, 1958 [Oct. 7, 1957], No. 31299/57. Class 123(1) [Also in Group XXX] A high level indicating and controlling device for bulk storage tanks for liquids in which a pressure is set up, for example due to aeration or processing of the contents or during the supply of the liquid by an air blower, comprises two flexible diaphragms 14, 15 mounted one above the other in a casting 10 secured in an aperture in the wall 11 of the tank so that the diaphragms face inwardly with the lower one at the level to be indicated. At the respective rear faces of the diaphragms 14, 15 are plates 18, 19 carried by rods 20, 21 which are coupled together by links 22, 26. The link 22 is pivotally connected to the rods 20, 21 at 24, 25 and is pivotally mounted at its mid-point on a fixed pin 23 whilst the link 26 is pivotally connected to the rods at 28, 29 and is pivotally mounted at its mid-point on a fixed pin 27. The respective lower ends of the links 22, 26 carry a member 33 adapted to actuate a micro-switch 35 and a return spring 31. Whilst the liquid is at a level below that of the diaphragm 15 any pressure set up in the container acts equally on both diaphragms 14, 15 and the linkage is maintained in the balanced position shown. When the liquid reaches the lower diaphragm it exerts an additional pressure thereon and, since there is no corresponding pressure on the upper diaphragm, the linkage is displaced with consequent operation of the micro-switch. The switch is effective to actuate an alarm signal and/or to cut off the supply of liquid to the tank. When the level falls below the diaphragm 15 the spring 31 resets the linkage to its balanced position.
Patent GB-1069696-A (GB)
Title: Process for the manufacture of drawn synthetic filaments
IPC: D02J1/22
Filed: 1964-08-04
Abstract: 1,069,696. Melt spinning and drawing synthetic filaments. TOYO RAYON KABUSHIKI KAISHA. Aug. 4, 1964 [July 31, 1963], No. 31303/64. Heading B5B. In a continuous process for melt spinning and drawing synthetic filaments they are drawn immediately after they have been melt-spun and have been caused to solidify and harden by cooling to such an extent that their tenacity at ordinary atmospheric temperature is above 0À8 gram per denier. An oil preparation which is free from water or contains water in a proportion of up to 10% by weight of the oil and dispersed in the oil is applied to the hardened filaments as they pass from the spinning zone to the drawing zone. The oil present in the oil preparation may be a fatty oil or a mineral lubricating oil of the spindle oil type having a Redwood viscosity in the range 40-300 seconds at 70‹ F. with a small proportion of a nonionic surface active compound. The drawn filaments are continuously wound up on a collecting means such as a spool and during the passage from the drawing zone to the wind-up means may have applied to them an oil preparation containing 50 to 75% by weight of water.