baber/WOPTO huggingface dataset:
Patent GB-1410545-A (GB)
Title: Internal combustion engines
IPC: F02D41/34
Filed: 1973-06-19
Abstract: 1410545 Automatic control of air/fuel ratio ROBERT BOSCH GmbH 19 June 1973 [20 June 1972] 29148/73 HeadingG3R [Also in Division F1] To vary the composition of exhaust gas of an internal combustion engine, the mass ratio of fuel/ air mixture to the engine is regulated according to the measured composition of the exhaust gas by a control system including a two state switch, that changes state when the measured gas composition passes through a threshold valve, and an integrating amplifier, that integrates in opposite directions for the two states of the switch and which has a ramp rate dependent upon an operating parameter of the engine. As shown, a signal from probe 14, dependent upon the oxygen content of the engine exhaust gas, passes through amplifier 15 and threshold switch 16 to turn on one of complementary transistors 27, 28 according to whether the oxygen content is high or low respectively. According to which transistor is conducting, switch 11 passes a signal at 13, dependent upon the quantity of air to the engine or the engine speed, either directly, or through inverter 12, to integrating operational amplifier 17. The output of amplifier 17 controls the fuel/air mixture to the engine by varying either the position of a flap in the engine air intake or varying the fuel injection to the engine using a monostable multi-vibrator.
Patent GB-1482619-A (GB)
Title: Battery
IPC: H01M6/36
Filed: 1971-06-22
Abstract: 1482619 Fuze compositions CATALYST RESEARCH CORP 22 June 1971 [10 July 1970] 29247/71 Heading C1D [Also in Divisions C5 and H1] For use in a heat activated primary battery (see Division H1) to ignite a combustible material, a fuze composition comprises a mixture of barium chromate and zirconium and a delay fuze composition comprises a mixture of silicon, lead oxide, and cuprous oxide.
Patent GB-1178276-A (GB)
Title: Machine Tool.
Inventor: HOFMANN WALTER ALBERT
IPC: B23G1/02
Filed: 1967-06-26
Abstract: 1,178,276. Screw cutting lathes. WARNER & SWASEY CO. 26 June, 1967 [15 Sept., 1966], No. 29278/67. Heading B3T. An automatic thread-cutting operation in a machine tool such as a lathe is effected by a tool 33 on an attachment 30 which is mounted on a cross-slide 20 of the machine tool, the attachment including a longitudinal slide 31 and a tool slide 32. The longitudinal slide is driven from the machine spindle 13 through gearing and clutch members 65, 66 to a lead-screw 50 on the slide 31, fluid means 80 being provided to operate a reversing clutch 72 to reverse the direction of rotation of the lead-screw 50 at the end of each work traverse of the slide 31. The infeed of the tool slide is effected by a cam 91, fluid means 93 being provided to hold the cam 91 in engagement with the cam follower 92 during operation. The cam 91 is indexable at the end of each working traverse of the slide 31 by pawl-and-ratchet mechanism 128a, 129a which is actuated by fluid means 126 and 133, respectively, the indexing of the cam effecting success steps in the infeed of the tool slide until the correct depth of thread has been cut. In operation the tool is positioned relative to the workpiece 17 and an initial infeed of the tool is effected, the drive to the lead-screw 50 of the longitudinal slide 31 is then actuated and the tool makes a cutting traverse along the surface of the workpiece. At the end of the work traverse a stop bar 101 on the slide 31 engages an abutment 100 on the machine frame which permits the withdrawal of the tool by the fluid means 93. The movement of the stop-bar 101 subsequently actuates a valve 120 which controls the fluid means 80 which actuates the reversing clutch 72 which reverses the direction of rotation of the lead-screw and thus effects the return movement of the tool slide. At the end of the return movement trip 121 on the slide 31 actuates a distributer valve 125 to actuate the ratchet mechanism to increase the infeed by indexing the cam member 91 and also actuate the fluid means 93 to effect the infeed movement of the tool slide, the movement of the tool slide actuated the valve 120 to effect the work traverse of the tool. The cycle of movement of the tool is continued until the required depth of thread has been cut, whereat the machine operation is terminated by abutment of the adjustable trip member 129 with means 130a which permits the slides and ratchet members to return to the initial positions ready for a further thread cutting operation.
Patent GB-1479250-A (GB)
Title: Process for the prodcuction of carbamate derivatives
IPC: C07C239/00
Filed: 1975-07-11
Abstract: The compounds of the formula I which are defined in Claim 1 have a herbicidal activity. These active substances are prepared by reacting a compound of the formula III with a compound of the formula II in the presence of a base. <IMAGE>
Patent GB-1293102-A (GB)
Title: Improvements relating to gas stoves
IPC: F23Q/
Filed: 1971-06-22
Abstract: 1293102 Igniters for gas stoves ORBAICETA SA 22 June 1971 [2 Dec 1970] 29299/71 Headings F4F and F4T An ignition device for a gas stove indicated partially as a panel 5 comprises a burner 3 having a main flame aperture 7 to ignite the stove and a second aperture 9 to direct a flame on to the sensitive end of a thermocouple 4 which then at a predetermined temperature opens a gas valve supplying gas to the stove, and on ignition of the stove the heat therefrom maintains the gas valve open allowing the burner 3 to be extinguished. Should the stove be subsequently extinguished, the absence of heat from panel 5 will cause the thermocouple to close the gas valve for safety. The burner 3 has combustion air inlet vents 10 and the burner and thermocouple are both mounted on a bracket 2. The main flame aperture consists of two side apertures joined by a slit.
Patent GB-1194102-A (GB)
Title: Well Pipe or Casing Hanger
Inventor: PUTCH SAMUEL WILLIAM
IPC: E21B43/10
Filed: 1968-06-20
Abstract: 1,194,102. Wells &c. FMC CORP. 20 June, June, 1968 [16 Aug., 1967], No. 29327/68. Heading E1F. A well pipe hanger comprises a tubular body 12, a resilient ring 14 mounted on the body, and a shoulder 92 on the ring engagable with a support shoulder 94. When the weight oil the pipe 34 and hanger is taken on the shoulder 94, pins 18 holding a stop ring 16 shear and the hanger moves downwardly to prevent inward movement of the ring 14. The pipe and hanger may be withdrawn from the well, a boss 102 on the ring camming the ring inwardly and a flange 58 on the body preventing outward movement of the ring during withdrawal. The boss serves to prevent the shoulder 92 engaging shoulders other than the shoulder 94 during lowering of the hanger.
Patent GB-172187-A (GB)
Title: Improvement in electric indicator boards and the like
IPC: G08B5/28
Filed: 1920-10-18
Abstract: 172,187. Eriksson, E. G., and Jonasson, R. G. Oct. 18, 1920. Falling-flap indicators or annunciators.-In an indicator in which the drop-disc 10 is rotatably mounted on a shaft 9 at its upper edge in such a manner that in the horizontal position the opposite edge rests on the armature 5 of the magnet, the armature 5 is rotatable about its lower edge, for instance, by a pin 6 mounted in an iron stud 4, and the shaft 9 is on a level with the upper edge of the armature. A replacement rod 15 by means of a pin 14 and slotted. lever 13 rotatable on the shaft 9 causes a strap 12 to lift an arm 11 attached to the disc 10, thus re-setting the disc in its horizontal position.
Patent GB-1209535-A (GB)
Title: A linear induction motor
IPC: H02K41/025
Filed: 1968-06-20
Abstract: 1,209,535. Linear motors. LINEARA A.B. 20 June, 1968 [29 June, 1967], No. 29387/68. Heading H2A. A linear polyphase induction motor comprises a number of substantially identical, separate, ferro-magnetic, toothed primary member core parts, each part having disposed around its teeth the coils which together form one phase winding, the separate parts being mounted with their toothed surfaces adjacent one another, leaving an air gap in which a conductive secondary member is movably mounted, the teeth on the different primary member parts being out of alignment. The two-phase linear motor shown comprises separate ferromagnetic core parts 12A, 12B carrying coils 10A, 10B on individual teeth 13A, 13B, the coils on each core part being connected in series to a single phase source 7, the coils 6A being supplied through a phase splitting capacitor 9. A conductive, non-magnetic, e.g. copper or aluminium, secondary member 2 is mounted in the air gap between the parts 12A, 12B, and 12A is movable relative to the fixed part 12B by means of a nut and bolt arrangement, 19, 25, thus allowing relative displacement of the teeth on the two parts. The core slots are filled with an insulating compound and the core parts are mounted in a good thermally conductive, e.g. aluminium, casing 14A, 14B. A three-phase motor having three separate core parts displaced 120 degrees with respect to each other on the prmiary member and having a three-armed secondary member is described with reference to Fig. 3 (not shown).
Patent GB-1424889-A (GB)
Title: Compositions for use in agriculture
IPC: A01N57/00
Filed: 1973-06-21
Abstract: 1424889 Fungicide/plant growth regulant compositions BADISCHE ANILIN-& SODAFABRIK AG 21 June 1973 [22 June 1972] 29428/73 Heading A5E [Also in Division Cl] An agricultural composition comprises 2- chloroethyl-trimethyl-ammonium chloride as plant growth regulant and a fungicide selected from carbendazim and its salts, 1, 2-bis-(3- methoxycarbonyl-2-thioureido)-benzene, and 1, 2-bis-(3-ethoxycarbonyl-2-thioureido) - benzene. The compositions find application in the treatment of barley, wheat, rye and oats.
Patent GB-310980-A (GB)
Title: Improvements in means for the preservation of grain, flour and bran of cereals
IPC: A23B9/30
Filed: 1927-11-05
Abstract: 310,980. Legendre, R. A. Nov. 5, 1927. Treating with air and gases; treating with solid substances; treatment by damping. - Grain. flour, or bran is exposed to the action of at least one salt of weak acid and a strong base-preferably a sodium or calcium salt-or to the action of at least one sufficiently strong non-toxic base to increase the pH value of its diastase cells, preferably to more than 7. In specific examples (i) the material is sprayed with water in which is dissolved or suspended a mixture of equal parts or lime, carbonate of lime and carbonate of soda; (ii) the material is intimately mixed with a. pulverized mixture of the lime and carbonates: (iii) the material is treated with ammonia gas. Sea salt or phosphates may in addition be added to the material undergoing treatment when such material is intended for feeding animals. Specifications 13135/08 and 28375/12 are referred to.
Patent GB-654803-A (GB)
Title: Manufacture of metallic powder
IPC: B22F9/12
Filed: 1948-11-16
Abstract: A method of obtaining powder alloys or metallic complex mixtures consists in melting and progressively vaporizing, in an atmosphere which may be non-oxidizing, a metallic complex body containing side by side and/or in alloyed state the metals intended to enter into the composition of the proposed powdered alloy by heating the said body to a sufficiently high temperature to obtain transformation of all the metals together into a gaseous phase, after which the gaseous phase is stirred and cooled down by blowing it as its formation proceeds by a high pressure gas flow and the fine alloy droplets resulting from the cooling of the gas are collected in the dispersed state after cooling to complete solidification.  The complex body may be a compound wire comprising either coaxial layers of the metals or a tubular envelope formed of at least one layer of at least one of the metals inside which is a powder of the other metal or metals. Alternatively, a cable comprising several strands, each of which is constituted by at least one of the metals, may be used.  The melting, vaporization of the metals and the stirring and cooling of the gaseous phase produced may be performed by a metallization spray gun heated in the usual manner.  The sprayed alloy may be projected into a cooled atmosphere or into a liquid such as water or oil.  The powder produced may be used alone or mixed with other materials for obtaining articles or coatings by powder metallurgical methods.  The production of powdered alloys of Cu and Pb, Cu and Sn or Fe and Pb is referred to, e.g. Cu with 7 per cent Sn, 33 per cent Sn or 30 per cent Pb.
Patent GB-639163-A (GB)
Title: Improvements in reaping and threshing machines
IPC: A01F7/00
Filed: 1947-11-07
Abstract: 639,163. Combine-harvesters. TRIER, L. P. Nov. 7, 1947, No. 29769. Convention date, June 18, 1946. [Class 6 (iii)] A combine harvester, of the type which includes a reaping unit a, a beater d disposed approximately longitudinally of the direction of travel, and a transverse endless-band elevator c connecting the reaper and beater, is characterized in that the beater is forwardly and downwardly inclined by approximately 5-10 degrees so as to lie parallel to the operative position of the reaping unit. The reaping unit a is mounted on a longitudinal pivot i about which it can be raised for transport. The elevator roller adjacent to the beater runs in a fixed mounting, but the lower roller is adjustable with the reaper by movement of the handle n.
Patent GB-533669-A (GB)
Title: Improvements in conversion products of rubber
IPC: C08C19/18
Filed: 1939-11-10
Abstract: 533,669. Conversion products of indiarubber. UNITED STATES RUBBBER CO. Nov. 10, 1939, No. 29797. Convention date, Dec. 29, 1938. [Class 70] Hardened conversion products of raw or vulcanized indiarubber are produced by heating the rubber to a temperature of from 70‹C. to 170‹C. in the presence of a volatile aliphatic halide such as methyl iodide, ethyl iodide, normal butyl iodide, isobutyl iodide, isoamyl iodide, t-amyl chloride, isopropyl bromide, or, for vulcanized rubber only at elevated temperatures, butyl chloride, isoamyl chloride, and normal propyl bromide. In the case of raw rubber a weak brown or black product, insolable in usual rubber solvents is obtained. Vulcanized rubber is first converted to a thermo-plastic substance resembling vulcanized balata and on continued heating or heating to a higher temperature, to a brittle shellac-like material.
Patent GB-396689-A (GB)
Title: Improvements in or connected with packing cases or containers
IPC: B65D85/672
Filed: 1931-10-29
Abstract: 396,689. Containers for rolls of insulating-tape &c. WILLIAMS, H. R., Roby, Carr Wood Road, Bramhall, Stockport. Oct. 29, 1931, No. 29956. [Classes 18 and 94 (i).] Coils or rolls of electric insulating - tape &c. are packed in packing cases or other containers by means of one or more trays or partitions 6 of wood, cardboard, sheet metal, &c. and of triangular, round, oval, or other shape, each having a boss or projection 7 of wood, cardboard, &c. secured by gluing, nailing, &c. on which a coil or roll is positioned so that it is prevented from projecting beyond the edges of the tray or partition and coming into contact with the container walls. More than one coil may be held on one projection, and the tray or partition may have a number of projections each carrying a coil. The trays may be arranged one above the other, each tray resting on the coil carried by the tray below. Reference has been directed by the Comptroller to Specifications 178,268, [Class 94 (i) Packing, &c.], and 265,106, [Class 18, Boxes &c.].
Patent GB-649767-A (GB)
Title: Improvements relating to the impregnation of paper felt with hot tar
Filed: 1946-10-08
Abstract: 649,767. Removing dust in industrial processes. KOPPERS CO., Inc. Oct. 8, 1946, No. 30021. Convention date. Dec. 20, 1945. [Class 8(ii)] [Also in Group VIII] In a process for impregnating a web of paper felt with coke oven tar under conditions wherein the temperature of the ambient atmosphere is below 60‹F.-the sublimation temperature of naphthalene-the felt is passed through and withdrawn from a bath of hot tar within an enclosure whose temperature is maintained above 60‹F. by continuously exhausting the atmosphere from the enclosure and replacing it by air at above 60‹F. The felt is taken over a dry looper 4 from a reel 2, passed through a tar bath 6, over a weighing device 8 and over a wet looper 10 to a winder 12. The tar bath 6, weighing device 8, and part of the wet looper 10 are enclosed by a hood 14 provided with an inspection opening 26 constituting a warm air intake. Adjustment of the flow of air through the intake is provided by sliding doors 28, 29. Atmosphere from the hood 14 is exhausted through ports 60 by a fan 66 dampers 64 being provided. A second enclosure 34 completely encloses the hood 14 and is provided with a number of forced draught fans 70 for blowing air into the enclosure 34 through heater units 68. The fans 70 and heater units 68 are regulated to maintain the air flowing through the intake 26 at above 60‹F. and to avoid the formation of reduced pressure within the enclosure 34. Automatic sprinklers 71 are provided in the hood 14 and are correlated with the fans 70 through temperature responsive mechanism such that in the event of fire the fans 70 are shut off and the sprinklers actuated. Instead of the hcod 14 and enclosure 34 enclosing part of. the wet looper 10, only a small projection 72 of the hood may do so, enclosing only so much of the wet looper as gives off objectional vapours.
Patent GB-778137-A (GB)
Title: Improvements in and relating to machmes for cutting or shearing sheets or plates
IPC: B23D15/14
Filed: 1954-10-19
Abstract: 778,137. Shearing. RHODES, C. J., and RIDGWAY, H. Oct. 7, 1955 [Oct. 19, 1954], No. 30052/54. Class 83 (4). In an hydraulically actuated guillotine, the drop in pressure in the hydraulic system when the work is completely sheared is used to actuate a control arrangement that returns the shear blade to its initial position. In a guillotine similar to that described in Specification 556,836 in which a blade-carrying beam 1 is reciprocated by two sets of links 3 actuated by a double-acting hydraulic piston 6, the working stroke is initiated by the raising of a latch 11 by a foot-pedal whereupon an arm 14 engaging a notch 34 in the latch 11 actuates the control valve 15 to supply liquid under pressure to the piston 6. A fixed stop 36 engages a notch 35 in the latch 11 to hold it in the operated position.. The cylinder 7 containing the piston 6 is connected to the inlet 28 of a cylinder 22 so that as the pressure increases as shearing is effected a plunger 23 is moved to allow a pivoted member 32 resting on a projection 33 secured to the latch 11 to drop into line with the projection 33. The drop in pressure occurring when shearing is completed permits the plunger 23 to be returned by a spring 24 to cause the pivoted member 32 to release the latch 11 from the stop 36, and the return of the latch 11 actuates the arm 14 to cause the control valve 15 to effect the return of the beam 1. An overload device 19 similar to that described in Specification 706,320 trips the latch 11 should the operating pressure be excessive. An hydraulic hold-down 20 is provided.
Patent GB-757610-A (GB)
Title: Manufacture of fluoroacetamide and of potassium and sodium fluoroacetates therefrom
Inventor: CHAPMAN CYRIL
IPC: C07C233/01
Filed: 1953-10-30
Abstract: The invention comprises a process for the manufacture of fluoracetamide by the action of at least 3 mols. of potassium fluoride on chloroacetamide in an inert solvent at 100 DEG -150 DEG C. In examples, chloroacetamide is heated in xylene or tetrachloroethylene with 3 or 4 mols. of KF and the fluoracetamide separated by distillation.  The invention also comprises the conversion of the product made by the process described into sodium or potassium fluoroacetate by hydrolysis with caustic alkali, an example of preparation of the sodium compound being given.
Patent GB-283700-A (GB)
Title: Means of recording, and amplifying the record of, the presence of electric charges orof any objects
IPC: G01R29/24
Filed: 1926-11-29
Abstract: 283,700. Boyd, W. E., and Stewart, T. Nov. 29,1926. Thermionic valve circuits. - The invention relates to means for detecting and recording the presence of minute static electric charges and also the presence or movement of animal, vegetable, or mineral objects, whether electrically charged or not, and consists in apparatus including one or more thermionic valves, the grid of the first of which constitutes one end of a free or floating grid system, the other end of which is not connected to earth in any way and is not connected to a condenser as a necessity for the fundamental operation of the apparatus, which depends for its operation on variation of the distribution of the static charge in the free grid system caused by the approximation to its free end of the charged source or of objects being examined. The circuit includes a series of valves having grids G1, G2 - - Gn, Fig. 2, anodes A1, A2 - - An, and filaments F1, F2 - - Fn. The anode of each valve is connected to the grid of the subsequent valve through high-tension batteries HT1 - - HT5. The anode An of the last valve is connected to a galvonometer G which is also connected to one pole of the battery HTn. Grid leaks L2 - - Ln are fitted to all valves except the first. The valve system is enclosed in a metal gauze or other solid, perforated, interlaced, or liquid screen S connected to earth..The connections with the tappings of the high-tension batteries HT1 - - HTn are provided with regulating rheostats (not shown). The filament resistances R2 - - Rn are initially adjusted and left set, the final adjustment being obtained on the filament resistance R1 of the first valve. The free grid system of which the grid G1 forms part may comprise a straight wire 1, Fig. 2, or a plate 4, Fig. 3, connected by a straight wire 5 to the grid G1. Alternatively, a fixed curved wire 6, Fig. 4, may be arranged in series with the plate 4 and grid G1. In another form the plate 4 is connected to a continuously-tapped straight or curved wire 7, Fig. 5. The plate 4 may be omitted. A variable condenser or combinations of capacity in series and parallel may be connected between the grid and the straight or curved wire. The object to be examined is mounted on a carrier which can be moved towards or away from the plate 4, the carrier being enclosed within a screen into which the plate 4 projects without being electrically connected thereto.
Patent GB-897585-A (GB)
Title: Means and method for cutting rotating rolls of sheet material
IPC: B26D3/16
Filed: 1960-09-01
Abstract: 897,585. Milling. LEVER BIAS MACHINE CORPORATION. Sept. 1, 1960 [April 21, 1960], No. 30129/60. Class 83 (3). [Also in Groups VIII and XXIII] Means for slitting rotating rolls 14 of sheet material comprise a pair of rotary cutters 10, 12, the cutter 12 being driven from an electric motor 40, and means for simultaneously advancing the cutters into the roll 14, the cutter 10 having a pair of axially-spaced circular smooth cutting-edges 54, 56, Fig. 3, which are arranged to straddle the zone of the roll 14 which is engaged by the teeth 58 of cutter 12. The cutters are pivotally supported with respect to a carriage 22 traversable on rails 20 and are advanced into the roll, e.g. by means of interconnected piston-and-cylinder assemblies 46, 76, the supply of fluid to which is controlled by an electrically-operable valve 50. When the knife 10 is retracted, a microswitch 90 is operated to index the carriage 22. Specifications 863,518 and 865,176 are referred to.