baber/WOPTO huggingface dataset:
Patent GB-1307287-A (GB)
Title: Insecticidal and acaricidal preparations
IPC: A01N33/06
Filed: 1970-04-29
Abstract: 1307287 Chloroanilines CIBA-GEIGY AG 29 April 1970 [30 April 1969] 20537/70 Heading C2C [Also in Division A5] 4 - Chloro - 2 - methyl - N - ethylaniline is prepared by the consequential steps of (A) refluxing a mixture comprising para-toluenesulphochloride, 4 - chloro - 2 - methylaniline, triethylamine and toluene to yield N-4-chloro- 2 - methylphenyl - para - toluenesulphonamide which is (B) treated with sodium hydroxide and diethylsulphate in dioxan to form N-4-chloro- 2 - methylphenyl - N - ethyl - para - toluenesulphonamide which is (C) treated with sulphuric acid and basified to yield the desired product. 4 - Chloro - 2 - methyl - N - isobutylaniline is prepared by hydrogenating a mixture of 5- chloro-2-toluidine, isobutylaldehyde, sodium acetate and Raney nickel. 4 - Chloro - 2 - ethylaniline is prepared by refluxing 4-chloro-2-ethyl acetanilide, concentrated hydrochloric acid and isopropanol and basifying the product. The 4-chloro-2-ethyl acetanilide is prepared by treating orthoethylaniline with acetic anhydride and treating the product with sodium hydroxide and chlorine.
Patent GB-190776-A (GB)
Title: Improvements in and relating to multiple unit steam turbine installations
IPC: F01D15/02
Filed: 1921-09-21
Abstract: 190,776. Parsons, Sir C. A., and Anderson, E. H. B. Sept. 21, 1921. Motor power plant. - In installations of the kind described in Specification 7468/15 two or more propeller shafts are each driven through gearing by two or more turbines in series. The turbine sets are connected by valve-controlled pipes so that while at high powers steam is supplied direct to the high pressure turbine of each set, at low powers steam is supplied only to some of the high pressure turbines and passes through the initial stages thereof, and then with the aid of the pipes passes in parallel through the final stages of all the turbines. In one form, two sets of turbines are employed in which the high pressure turbines 1, 2, Fig. 1, have initial stages 3, 4 and final stages 5, 6 respectively. Astern stages 7, 8 may be provided. Pipes 11, 12 lead to the low pressure turbines 9, 10 and in the case of astern running pipes 13, 14 are used. A pipe 19 connects the high pressure turbines and a valve 20 in the pipe is normally shut for high power running, steam being supplied at both inlets 15, 16. At low powers steam is supplied at only one of the inlets 15, 16 and the valve 20 is opened so that the steam after passing through one only of the initial stages 3, 4 divides and passes through the stages 5, 6 and the low pressure turbines. In another form, a diaphragm 21. Fig. 3, with labyrinth packing 22 separates the stages 4, 6 of the high pressure turbine 2 and two valves 20, 23 are provided in the pipe 19. At high powers the valve 20 is shut and the valve 23 open so that steam passes from the inlet through the stages 4, 6 in turn but at lower powers when the stage 4 is inoperative the valve 23 is shut and the valve 20 opened to admit steam to the stage 6 from another high pressure turbine. A single two-way valve may replace the two valves 20, 23. The inoperative stage 4 may be connected to the condenser or to some point of low pressure in the turbine to minimize rotational losses.
Patent GB-452347-A (GB)
Title: Improvements in or relating to the cutting of fabrics made up of or containing yarns of thermoplastic materials
IPC: B26F3/06
Filed: 1935-09-09
Abstract: 452,347. Cutting fabrics. BRITISH CELANESE, Ltd., 22, Hanover Square, London. Sept. 9, 1935, No. 25105. Convention date, Sept. 7, 1934. [Class 31 (i)] A fabric made of or containing yarns of thermoplastic material is cut by a knife element extending through the fabric and maintained above the temperature of fusion of the material, and the cut edges are held apart during cutting so as to allow them to cool before permitting them to contact with each other or any other portion of the fabric. As shown, fabric 12 from a roll 11 on an adjustable carriage 6 passes through a tensioning device 41, over a guide roll 39 to bars 45, 46 between which it is cut into ribbons by a number of stationary knives 55; the ribbons pass together over a guide roll 40 round a driven friction drum 28 to a receiving roll 31. The rolls 39, 40, bars 45, 46 and tensioning device 41 are carried by a vertically movable carriage 34. The knives 55 of triangular section to separate the cut edges are secured to a tube 48 provided with a heating element 47 and surrounded by asbestos 60 and an outer tube 57. The bar 46 preferably is hollow and cooling water circulates through it ; asbestos powder may be placed between the bars 45, 46.
Patent GB-1408553-A (GB)
Title: Deburring device
IPC: B25D15/00
Filed: 1974-06-06
Abstract: 1408553 Deburring H L NEILSEN 6 June 1974 [14 June 1973] 25258/74 Headings B3D and B3X A deburring device for edges e, Fig. 2, of sheet material w comprises an annular peening- element container 36 coaxially fixed upon a rotatable shaft 30, plural peening elements 38 loosely retained in the containers and capable of radially outward displacement arising from centrifugal force developed by rotation of the device, the container having a continuous circumferential slot 35 providing an area for deburring interengagement between the peening elements and a workpiece edge. In one embodiment, the container is formed by a pair of cups 31 which are spaced apart by a sleeve 32 and clamped against a flange 33 on the shaft 30 by a nut 34. The peening elements consist of steel balls 38 which may be coated with abrasive and, during rotation of the device, are thrown centrifugally outwards to deburr the edge of a workpiece passed through the slot 35 between the cups. In another embodiment, the peening elements consist of rollers 46, Fig. 5, located in opposed cavities 45 in carriers 41 which are received within cups 40 and mounted on the shaft 30. The rollers have grooves 47 which may have an abrasive surface. During rotation of the device, the rollers are urged outwardly centrifugally to deburr the edge e of the workpiece w. In a further embodiment, the peening-elements 53, Fig. 9, are in the form of rollers which are generally radially disposed in cavities 51, 52 in retainers 49 spaced apart by a sleeve 50 on a rotatable shaft. The cavities 51 are larger than the cavities 52 and alternate in the retainers, the arrangement being such that a large cavity in one retainer is opposite a small cavity in the other retainer. The outer ends 51 of the rollers are hemispherical so that, in use, the centrifugal force causes pivoting of the rollers into engagement with the edge of the workpiece. In a fourth embodiment, the peening elements 54, Fig. 13, are in the form of grooved rollers having trunnions 60 retained in radial slots 63 in a guide 56 by shallow cups 55. In a fifth embodiment, the peening elements 69, Fig. 17, are located in an annular space 68 between a member 64 and the rims 67 of shallow cups 65. In a similar embodiment, the peening elements are located in annular grooves 75, Fig. 20, in members 72 secured face-to-face on the shaft 30.
Patent GB-317762-A (GB)
Title: Improvements in or relating to loom shuttles
IPC: D03J5/00
Filed: 1929-08-20
Abstract: 317,762. Maschinenfabrik R³ti vorm. C. Honegger. Aug. 21, 1928, [Convention date]. Shuttles; shuttle boxes.- The front lower edge of a shuttle 1 is provided with a longitudinal groove 2 for the reception of the weft thread 3. The shuttle box 4, stated in the Specification as open to inspection under Sect. 91 (3) (a.) as having a longitudinal groove 5 in its front wall corresponding to the groove in the shuttle, is not shown on the drawings or referred to in the Specification as accepted.
Patent GB-733128-A (GB)
Title: Spraying apparatus
IPC: A01M7/00
Filed: 1953-09-15
Abstract: 733,128. Crop sprayers. FOOD MACHINERY & CHEMICAL CORPORATION. Sept. 15, 1953 [Sept. 30, 1952], No. 25438/53. Class 69 (3). A machine of the type comprising an axial flow fan 15 which blows air radially outwardly from an air tunnel 12 to entrain liquid insecticide fed from nozzles 18, includes a grill 20 comprising a frame 25 with spaced baffles 22 mounted between the ground and the fan inlet screen 17. The grill prevents the clogging of the screen with leaves, twigs, &c. which otherwise would be drawn up from the ground. Specification 661,712 is referred to.
Patent GB-389470-A (GB)
Title: Improvements in dry rectifiers for alternating current
IPC: H01L21/00
Filed: 1931-09-10
Abstract: 389,470. Static contact rectifiers. JONES, R. J. ELSOME-, 5, Clifton Gardens, Golders Green, London. Sept. 10, 1931, Nos. 25445, and 32815, (Divided application). [Class 37.] In order to prevent destructive electrochemical action occurring between the electrodes of a dry surface rectifier, an intermediate relatively inert layer of a metallic derivative other than a derivative of the elements of the anode or cathode, e.g. an oxide of barium, thorium, uranium, lithium or cobalt), is interposed between the electrodes of each couple. Any appropriate materials may form the electrodes, and the intermediate layer may be applied to the anode as a solution which is subsequently evaporated. By way of example, an eight couple assembly arranged for full-wave rectification is described. Couples comprising brass plates 22 painted with cathode paste 23, containing e.g. copper sulphide and selenium, and anodes 24 separated therefrom by the intermediate layer 27, which is preferably of such thickness, e.g. .005", that no appreciable potential drop occurs, are arranged in pairs between fire radiating and terminal plates 18, 14, 12, 15, 19, so as to be symmetrical about the central plate 15. Rectangular metal endplates 3, 4 are clamped against metal washers 25, 26 exterior to the plates 18, 19 by four tie bolts 5 .. 8 which surround the couples and have threaded ends screwing into the plate 3, but passing freely through holes in the plate 4 so that adjustment of pressure can be made by nuts 10 bearing against the outer face of plate 4. Insulating sleeves 11 surrounding the tie bolts prevent contact with couples or radiating plates. A.C. input terminals are mounted on extensions of the plates 14, 15, whilst posicive and negative output terminals are similarly mounted in the plates 12 and 18 or 19 respectively. Specification 360,960 is referred to.
Patent GB-462696-A (GB)
Title: Improvements in or relating to the manufacture of abrasive coated fabric
IPC: C08L61/10
Filed: 1935-09-13
Abstract: In making abrasive-coated fabric or paper, the abrasive grains are secured to the backing by means of an adhesive comprising an aqueous alkaline solution of a resin.  The resins may be natural resins such as copal or synthetic resins such as phenolic condensation products, urea-formaldehyde resins or alkyd resins. Neutral or alkaline aqueous solutions of glue, casein, drying oils, gums or starches may be added.  Alkyd resins may be solubilized by ammonia, borax or triethanolamine.  In examples, glycerol-phthalic anhydride resins modified or not with glycol, succinic acid or adipic acid, dissolved in aqueous ammonia, or a mixed ester of glycerol phthalate and glycol succinate dissolved in aqueous ammonia containing glue are used.  The artificial resin may be used also for the sizing coating.ALSO:In making abrasive-coated fabric or paper, the abrasive grains are secured to the backing by means of an adhesive comprising an aqueous alkaline solution of a resin.  The resins may be natural resins such as copal or synthetic resins such as phenolic condensation products, urea-formaldehyde resins or alkyd resins. Neutral or alkaline aqueous solutions of glue, casein, drying oils, gums or starches may be added.  Alkyd resins may be solubilized by ammonia, borax or triethanolamine.  In examples, glycerol-phthalic anhydride resins modified or not with glycol, succinic acid or adipic acid dissolved in aqueous ammonia or a mixed ester of glycerol phthalate and glycol succinate dissolved in aqueous ammonia containing glue are used.  The artificial resins may be hardened by heating at about 300 DEG  F. The adhesive may be used also for the sizing coating.
Patent GB-1057837-A (GB)
Title: Improvements relating to locking arrangements for slidable seats
IPC: B60N2/07
Filed: 1964-06-19
Abstract: 1,057,837. Adjustable seats. DAIMLERBENZ A.G. June 19, 1964 [July 2, 1963], No. 25538/64. Heading A4J. A slidable seat has a locking bar 2 rockably connected to the rear part of the base 1 of the seat by a leaf spring 5. The bar 2 has at least one pawl tooth engageable between the teeth of a rack 3 which is secured to a floor of e.g. a vehicle body. Alternatively, the bar 2 may be provided with a rack engageable by one or more teeth on the part 3. The leaf spring 5 has two arms 7, 8. The arm 7 is bent downwardly and the arm 8 is clamped between the seat base 1 and the upper part of a guide rail (9), Fig 3 (not shown). The flanks of the rack teeth are inclined forwardly and the coacting flank of the or each pawl tooth is inclined rearwardly to suit the curved path of movement of the pawl tooth. The tops of the rack teeth are bevelled downwardly towards the rear.
Patent GB-1019302-A (GB)
Title: Circuit arrangements for varying the delay of electrical signals
Inventor: BALDWIN JOHN LEWIS EDWIN
IPC: H03H11/26
Filed: 1961-07-14
Abstract: 1,019,302. Gating and delaying circuits; variable delay lines. RANK-BUSH MURPHY Ltd. July 16, 1962 [July 14, 1961], No. 25578/61. Headings H3P, H3T and H3U. A variable delay line has a number of tappings controlled by selectively-operable electronic valves (including transistors and other semi-conductor devices). The delay line 1 (capacitors not shown) is connected at intervals to the anodes of valves 4-8 and the input signal is fed to the common cathode line 24. With one valve fully operative and the rest beyond cut-off a delay corresponding to the position of the associative tapping is obtained. To obtain delays intermediate those provided by the individual valves, the signal may be divided between two or three adjacent valves. However, if the delay between adjacent tappings approaches 180 degrees the frequency-response of the circuit deteriorates. In order to avoid this and to obtain a frequency response which is constant for all values of delay it is arranged that a group of adjacent valves is always operative even when the delay required exactly corresponds to one of the tappings. At least two and at most three valves are required to operate for any given delay (see Fig. 4, not shown). The variation of bias potentials on valves 4-8 is obtained by a network comprising resistors 31-39, together with a pair of valves 40, 41 having a common cathode resistor 42, two voltage reference tubes 43, 44 and ten diodes 45-54. The grid of valve 41 receives from a device 28 a bias voltage which varies with the amount of delay required. Thus, for maximum delay, valve 41 is fully conductive and valve 40 cut off. Under these conditions, the variation in voltage along resistor chains 36, 37 is given by lines 51, 52, Fig. 6. As the delay required becomes less, valve 40 passes more current and the bias-voltage variation approximates lines 51, 52 and finally, for minimum delay, lines 55, 56 (valve 41 cut off). The grid potential of each valve 4-8 is governed by the associated diode whose cathode is returned to the lower potential and a valve will become conductive only when the potentials at the relevant tappings approach sufficiently close to the potential appearing on the common cathode line. Normally, the signal to be delayed is fed from input 9 via valves 21, 21<SP>1</SP> to the common cathode line 24. When a delay greater than the total available from line 1 is required, device 28 causes valve 26 to become conductive whereby the input signal is fed to the cathode line via the valves 23, 23<SP>1</SP> and the extra delay line 22.
Patent GB-504554-A (GB)
Title: Improvements in and connected with reciprocating pumps, applicable also for motors
IPC: F01B3/00
Filed: 1937-09-22
Abstract: 504,554. Revolving - cylinder pumps, compressors, and engines. ZIMMERMANN, H. J., and DUINER, J. A. Sept. 22, 1937, No. 25669. [Classes 8 (i) and 102 (i)] [Also in Group XXIX] A revolving-cylinder pump, compressor, or engine comprises a rotor 8 having bores containing stepped pistons 22 forming pumping chambers 7. The pistons are arranged so that alternately they face opposite directions so that the forces acting on the rotor are balanced. The ends of the pistons engage swash plates 4 which may be adjusted manually or by means of piston 16 exposed to delivery pressure and engaging a projection 18 and acting against a spring 19 which may be adjustable. The inlet and delivery ports 25, 26 are carried by the stationary member 24.
Patent GB-831750-A (GB)
Title: Improvements in or relating to dental forceps
IPC: A61C3/14
Filed: 1957-08-14
Abstract: 831,750. Dental forceps. DRENDEL, H., and DRENDEL, H. J., [trading as DENTAL MANUFACTURING PASCHWITZ & CO.]. Aug. 14, 1957 [Aug. 17, 1956; Aug. 23, 1956], No. 25675/57. Class 81 (2). Dental forceps have the teeth-engaging surfaces 7, 8 of the jaws coated with wearresistant material such as diamond crystals or hard metal particles. The surfaces may be partially or wholly covered.
Patent GB-1535623-A (GB)
Title: Multi-mode radar system
IPC: G01S7/34
Filed: 1977-06-20
Abstract: 1535623 Radar BENDIX CORP 20 June 1977 [3 Sept 1976] 25709/77 Heading H4D An airborne pulse radar system transmits pulses at 9375 MHz and receives weather echo returns at this frequency and in addition twin pulse replies from ground beacons interrogated by this carrier frequency, but at 9310 MHz. The radar receiver circuits comprise pre-amp 26, Fig. 2, which feeds the I.F. signal from mixer 24 to switch 32 which controls the radar to receive in the weather radar mode, the mixed down I.F. signal from weather returns at 26À6 MHz in tuned amp 28, or, in the beacon mode the mixed down beacon frequency signal at 91À6 MHz in tuned amp 30. The gain of these I.F. circuits, 40 in Fig. 3 is controlled by A.G.C. 42 which is gated on by side step generator 44 towards the end of each p.r.p. corresponding to ranges not of interest wherein to prevent echoes still coming in preventing proper A.G.C. action, the L.O. frequency 22 is side stepped or detuned to disable the I.F. circuit input.
Patent GB-781531-A (GB)
Title: Crushing means for use with conveying devices
Inventor: SEILER SIEGMUND
IPC: E21F13/00
Filed: 1955-09-08
Abstract: 781,531. Jaw crushers. BOCHUMER EISENHUTTE HEINTZMAN & CO. GES. Sept. 8, 1955, No. 25773/55. Class 59  A jaw crusher adapted to be used in combination with an underground conveyer 2 comprises a fixed jaw 4, Fig. 1, and a cooperating oscillatable jaw 6 which is driven from a motor 17 through the intermediary of a flywheel 15. The jaw 6 is oscillated by means of a connecting rod 9 and an eccentric 11 mounted on the shaft 10 carrying the flywheel. In a modification, Fig. 2, the crusher comprises a fixed jaw 26 and a rotatable wheel 20 which has internal teeth 21 meshing with a pinion 23 mounted on a shaft 22 which also carries a flywheel 24 driven by a motor 25. The movable crusher jaw may be driven by the motor driving the conveyer. The crusher may be mounted between two conveyers or form a component part of the stationary frame of one of the conveyers.
Patent GB-1522341-A (GB)
Title: Copolymer and adhesive film prepared therefrom
IPC: C09J7/10
Filed: 1975-06-17
Abstract: 1522341 Adhesive coated films TH GOLDSCHMIDT AG 17 June 1975 [19 June 1974] 25788/75 Heading B2E [Also in Divisions B5 and C3] Substrates, which may be in the form of a thermoplastic film, are coated with a film of a copolymer consisting of a) 1-60% by weight of an acrylonitrile and/or methacrylonitrile, b) 30-95% by weight of an acrylic acid alkyl (C 1-12 ) ester, c) 1-15% by weight of acrylic acid, methacrylic acid and/or itaconic acid and d) 0.1-20% by weight of a N-alkoxyalkylamide of acrylic acid and/or methacrylic acid which may be in admixture with up to 25% by weight of an extraneous cross-linking substance, e.g. an epoxy resin or an aminoplast or phenoplast resin precondensate, or up to 25% by weight of a polyamide. Conversely a film of the above specified copolymer may be coated with a layer of a thermoplastic material. The specific Examples describe the coating of a copolymer of acrylonitrile ethyl acrylate, acrylic acid, N-methoxymethylmethacrylamide onto:- PTFE coated metal (1); a copolymer film of methyl methacrylate, nbutyl methacrylate, methyl acrylate, N-methoxymethylmethacrylamide, methacrylamide hydroxyethyl methacrylate and stearyl methacrylate which may be pigmented with TiO, (4) (5); pigmented with CdSe onto a film of a graft polymer, the substrate being formed from n-butyl acrylate, hydroxyethylmethacrylate, allyl methacrylate and ethyleneglycol dimethacrylate and the graft portion from methyl methacrylate, styrene, acrylonitrile, nbutyl methacrylate, methyl acrylate, N-methoxymethylmethacrylamide, methacrylamide, hydroxyethyl methacrylate and stearyl methacrylate (7); pigmented with green chromium oxide onto a film of a graft polymer, the substrate being formed from n-butyl acrylate, hydroxyethylmethacrylate and allyl methacrylate and the graft portion from n-butyl methacrylate, N-methoxymethylmethacrylamide, methacrylamide, hydroxyethylmethacrylamide and stearyl methacrylate (8); pigmented with green chromium oxide onto a copolymer film of methyl methacrylate, styrene, n-butyl acrylate, acrylonitrile, glycidyl methacrylate, and acrylic acid (9); and unpigmented onto a film of polyvinyl fluoride (10). In further Examples a copolymer of acrylonitrile, nbutyl acrylate, itaconic acid and N-methoxymethylmethacrylamide is coated onto PTFE coated rollers (3); and a copolymer of methyl methacrylate, n-butyl methacrylate, methyl acrylate, N-methoxymethylmethacrylamide, methacrylamide hydroxyethylmethacrylate and stearyl methacrylate onto a copolymer film of acrylonitrile, ethyl acrylate, acrylic acid and N-methoxymethylmethacrylamide pigmented with CdSe (6).
Patent GB-206313-A (GB)
Title: Improvements in or relating to carburetters for internal-combustion engines
IPC: F02M9/02
Filed: 1922-09-25
Abstract: 206,313. Brown & Barlow, Ltd., and Brown, C. Sept. 25, 1922. Spray carburettors having a slide or slides c adapted to move transversely across a straightthrough induction passage a, are provided with a conduit d in parallel with the main passage and situated immediately above the nozzle e, the conduit being provided at one end with an inlet b<1> for air and at the other end with an outlet b<2> for rich mixture.
Patent GB-364525-A (GB)
Title: An improved method and apparatus for edge rolling of crepe paper and the like
IPC: B31F1/00
Filed: 1931-09-15
Abstract: 364,525. Rolling edges of paper &c. FRIBERG, K. A., 6, Amalsgatan, Malm÷, Sweden. Sept. 5, 1931, No. 25834. Convention date, Sept. 24, 1930. [Class 42 (i).] Crepe paper &c., the edge of which is to be rolled, is pressed against a resilient surface 1, 11 by a blade 5, 15 which is moved away from the edge of the paper causing is to roll up after the blade. As shown in Fig. 1, the surface 1 is moved intermittently by a ratchet 3 and lever 2 which presses the blade 5 against the paper 9. As shown in Fig. 2, the blade 15 is at a small angle to the edge of the paper which is moved endwise, the rolling process being continuous.