baber/WOPTO huggingface dataset:
Patent GB-789195-A (GB)
Title: Improvements relating to sound recording and reproducing apparatus
Inventor: EUDORE BRASSEUR
IPC: G11B21/02
Filed: 1955-12-08
Abstract: 789,195. Magnetic recording and reproducing apparatus. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. Dec. 8,1955 [Dec. 21, 1954], No. 35257/55. Class 40 (2). Mechanism for driving the sound head of a sound record apparatus in reverse directions generally transverse to the step-by-step movement of a record sheet comprises a reciprocating plunger or piston connected to the sound head. In the embodiments shown the plunger is a cylindrical armature oscillated by a solenoid or solenoids. Fig. 1 shows such an armature 12 which is coupled by a ball-ended shaft 52 under spring tension to an arm 51 on a rotary shaft 15 controlling the reciprocating motion of the sound head (not shown). The armature 12 is oscillated by the alternate connection of two solenoids 1 and 2. The movement of the armature 12 is damped and controlled by means of a fluid which flows backwards and forwards through a passage 7 in the armature 12 from a reservoir 17, the rate at which the armature oscillates being controlled by a needle valve screw 61 which opens or closes a port 62 leading to a chamber 64. The fluid is kept at atmopheric pressure by means of a flexible diaphragm 16 in the side of the reservoir 17. Leakage of fluid through the upper bearing of the shaft 15 is prevented by a gland 6, Fig. 8. The armature may be mounted on ball-bearings running in grooves in the armature or in the casing.
Patent GB-1326154-A (GB)
Title: Hydrodynamic torque converter
IPC: F16H41/26
Filed: 1971-07-27
Abstract: 1326154 Torque converters VOITH GETRIEBE KG 27 July 1971 [27 July 1970] 35287/71 Heading F2C In a hydrodynamic torque converter comprising an impeller 2 having blades 3, a turbine 5 with a blade ring 4 having blades 7 and a reaction member 10 with blades 11, the turbine outlet diameter D T  is 6 to 15% larger than the impeller outlet diameter D P  and the exit angle of the impeller blades is between 95 and 140 degrees. The flow through both impeller and turbine is centrifugal. The entry angle of the stator blades is preferably between 90 and 130%, and the entry edges of the impeller blades preferably have a curvature of less than 0À6% of the impeller outlet diameter. The torque converter may be incorporated in the transmission of a Diesel locomotive.
Patent GB-882141-A (GB)
Title: Maleimide polymers
IPC: C08G73/06
Filed: 1959-10-19
Abstract: Thermoplastic polymers, useful for the manufacture of films, are prepared by heating in an inert solvent at a temperature sufficient to initiate evolution of sulphur dioxide an N,N1-bis-maleimide having the general formula <FORM:0882141/IV (a)/1> wherein R represents a divalent hydrocarbon radical and a thiophene dioxide having the general formula <FORM:0882141/IV (a)/2> wherein R1, R2, R3 and R4 are hydrogen or monovalent hydrocarbon radicals having from 1 to 20 carbon atoms. Many divalent radicals R are mentioned.  The specified thiophene dioxides are the 2,5-dimethyl, 3,4-diphenyl, 3,4-ditolyl, 3,4-dimethyl and the 2,5-diphenyl derivatives.  The preferred inert solvents are halogenated organic compounds in which both the monomers and polymer are soluble, e.g. chloroform, 1,2-dichloroethane, bromobenzene, chloronaphthalene, chlorotoluene, bromotoluene and tetrachloroethane.  Other specified solvents for the polymers are dichlorobenzene, dibromobenzene, bromonaphthalene and dimethyl formamide.  In the examples the polymers are prepared from (1) 3,4-diphenylthiophene dioxide and N,N1-(4,41-diphenylmethane)-bis-maleimide and (2) 2,5-dimethylthiophene dioxide and N,N1-(4,41-diphenylmethane)-bis-maleimide.
Patent GB-407155-A (GB)
Title: Improvements in electric lighting units
IPC: F21S13/00
Filed: 1932-12-16
Abstract: 407,155. Floodlight &c. lamps. GENERAL ELECTRIC CO., Ltd., and DEBENHAM, W. F. S., Magnet House, Kingsway, London. Dec. 16, 1932, No. 35698. [Class 75 (iv).] In an electric floodlight or like lamp the reflector is provided with one or more small windows, each of which is associated with a focusing screen adapted to receive an image of the light source in such manner that the light source can be adjusted in more than one dimension and thereby correctly focused with respect to the reflector. In the form shown, the reflector 10 is provided with an axial window 13 and a lateral window 15, and each window is associated with a focusing device comprising a hollow body 18 with a pin-hole 19, or a lens, and an opal glass screen 20. By using a lens, only a single window is necessary.
Patent GB-1214366-A (GB)
Title: Process for the manufacture of packaging fillers made of foamed synthetic plastics
IPC: B29C44/56
Filed: 1968-07-26
Abstract: 1,214,366. Moulding foamed materials. ASAHI KASEI KOGYO K.K. 26 July, 1968 [27 July, 1967; 31 July, 1967; 1 Aug., 1967 (3)], No. 35760/68. Heading B5A. [Also in Divisions B8 and C3] Shock resistant packaging materials of foamed synthetic resin, e.g. polystyrene, or a copolymer thereof, polyesters or polyethers, are produced by mechanically compressing a rigid form of the material, e.g. to 33 to 66% of the original volume, to expel a substantial amount of gaseous foaming agent whereby the material is rendered pliable, and simultaneously or subsequently cutting the compressed foam into smaller pieces. The compressing and cutting may be performed simultaneously between a reciprocable upper die 10<SP>1</SP> and a stationary lower die 14<SP>1</SP>, respectively provided with a series of interengaging concentric cutting edges 13<SP>1</SP> and grooves 15<SP>1</SP> which do not close into contact, whereby the packaging is produced as a series of concentric rings which, by suitable local shallowing of alternate opposed pairs of the cutting edges and grooves, Figs. 9 and 10, not shown, may alternatively be interconnected. By suitably configuring the cutting edges and grooves, the rings may be serrated or undulated in the horizontal plane. Alternatively, a series of spirals may be formed between the dies and these may be undulated in a vertical plane or serrated in the horizontal plane. The upper and lower dies may respectively be provided each with a centrally disposed cylindrical locating recess and projection, the latter serving also to locate the used end pads from textile yarn packages when these are employed as the rigid form of material. When rigid foam sheets are employed, the recess and projection are dispensed with. The process may be effected continuously between rolls 21, 23, each respectively provided with a group of concentric cutting grooves 28, 29 and 30, 31 the working surfaces whereof are separated by a gap 27; separate or interconnected rings may be produced. A sheet may be precompressed by passage through opposed rolls, comprising interengaging ribs and grooves, to form continuous strips which may be further subdivided in length. The moulding rollers may be formed with tongues and grooves of varying depth whereby a strip of sinusoidal configuration is obtained. Foamed sheets may also be compressed by passage through two sets of rolls and then cut into continuous strips by passage between a stationary bed comprising a series of parallel grooves and a series of rotary cutter blades. The continuous strips may be subdivided in length by cutting rolls provided with axially extending cutting regions. Examples of suitable blowing agents are given (see Division C3).
Patent GB-796039-A (GB)
Title: Regulating device for roller grinding mills
IPC: B02C4/32
Filed: 1956-11-22
Abstract: 796,039. Loading machine rollers. BUHLER, GEB. Nov. 22, 1956 [Nov. 26, 1955], No. 35772/56. Class 69 (2). An hydraulic system for regulating the pressure applied to the rollers of a grinding mill comprises a pump 1 supplying liquid through a relief valve 4, a reversing valve 8, a reducing valve 11 and a check valve 21 to a cylinder 14 having a piston 13 loading the rollers. Liquid is supplied to an inlet chamber 16 of the reducing valve, and thence passes, around a stem of the valve spool, to an outlet chamber 18. Outlet chamber 18 communicates through a restricted passage in the valve spool with a chamber 29 closed by an adjustable ball valve 36. When the pressure in chamber 29 opens the ball valve the spool is raised so as to restrict passage of liquid to the outlet chamber 18. If the rollers are forced apart by hard fragments, or if the grinding pressure is reduced by adjusting the valve 36, liquid leaves the pressure cylinder 14 through a restricted passage 43 provided in the check valve 21. If the reversing valve 8 is actuated to unload the rollers by supplying liquid to the underside of the piston 13, the liquid above the piston passes through a check valve 46 to a reservoir.
Patent GB-1171032-A (GB)
Title: Method and Means for Strand Filament Dispersal.
IPC: D04H3/03
Filed: 1967-02-28
Abstract: 1,171,032. Dispersing filaments of strands of a mat. OWENS CORNING FIBERGLAS CORP. 28 Feb., 1967 [4 March, 1966], No. 35998/68. Divided out of 1,171,031. Headings D1F and D1L. Filaments of strands of a mat are dispersed by flooding the mat with liquid from a weir 371, so as to overcome the forces holding the filaments together and collecting excess liquid in a tank 391. The mat is conveyed on a foraminous conveyor 361 through a body of liquid 375 fed from weir 371 such that the liquid 375 moves substantially at the same rate as the conveyor. A second stream of liquid 384 having a faster velocity is dispersed into the mat from weir 380 and has a component of velocity in the direction of movement of the conveyor. Excess liquid drains away into tank 391 under gravity and may be recirculated. Suction means 411 may be provided after the draining suction. The liquid may be water and may contain a binder.
Patent GB-900133-A (GB)
Title: Sulfapyridazines and process for preparation
IPC: C07D237/22
Filed: 1960-10-21
Abstract: The invention comprises compounds of the formula <FORM:0900133/IV (b)/1> wherein R is a hydrogen atom or a C1-6 alkyl or alkoxy group, e.g. CH3- or CH3O-, M is hydrogen or an alkali metal atom and the oxygen atom of the N-oxide is attached to the 1- or 2-position of the pyridazine ring, and mixtures of these N-oxides.  It comprises also the preparation of these compounds either by condensing a p-phenylsulphonic derivative A.C6H4.SO2X, wherein A is NH2 or a group convertible thereto by reduction or hydrolysis, with a pyridazine-N-oxide substituted in the 3- and 6-positions by substituents Y and R respectively, wherein one of the substituents X and Y is a halogen atom and the other is an -NH2 group; or by oxidising the corresponding 3 - benzenesulphonamido - pyridazine bearing a substituent A in the p-position, with a peroxide to form the desired N-oxide; and at any desired time in both these reaction sequences converting A into -NH2 if required and/or forming the alkali-metal salt.  Pyridazine - N - oxides used as starting materials, such as 6-methyl- and 6-methoxy-3-chloro-pyridazine-1-oxide and corresponding bromo-derivatives, are made by treating the appropriate pyridazine with hydrogen peroxide.
Patent GB-1446831-A (GB)
Title: Process for deodorization and steam refining of'fats and oils
IPC: C11B3/14
Filed: 1974-08-16
Abstract: 1446831 Deodorization and steam refining of fats and oils PARKSON CORP 16 Aug 1974 [4 Sept 1973] 36200/74 Heading C5C A process for deodorization and steam refining of glyceride fats and oils comprises the steps of mixing steam with the liquid glyceride; passing the steam-liquid mixture through a contactor comprising a confined tortuous flow path; controlling the temperature within the flow path so as to effect destruction and removal of any peroxides and to obtain an outlet temperature from the contactor of at least 350‹ F.; causing a pressure letdown within the contactor so as to cause the volatiles contained or formed by reaction within the liquid glyceride to vaporize in the contactor; and passing the resultant steam-liquid mixture into a separator and removing the deodorized and refined product. In the examples palm oil, coconut oil, an animal tallow, a grease, a blended oil containing refined and bleached soybean oil and cottonseed oils, a refined and bleached soybean oil feed, palm kernel oil and soybean oil are treated.
Patent GB-919571-A (GB)
Title: Improvements in or relating to transistors
Inventor: LYNTON DESMOND LAWRENCE
IPC: H01L23/66
Filed: 1960-10-21
Abstract: 919,571. Transistors; two-part couplings. GENERAL ELECTRIC CO. Ltd. Oct. 12, 1961 [Oct. 21, 1960], No. 36285/60. Classes 37 and 38 (1). A transistor which comprises a semi-conductor wafer 1 having in contact with one face thereof emitter and base electrodes and in contact with the other face a metal support 5 which forms the collector electrode, is housed in a hermetically sealed envelope consisting of two tubes of insulating refractory material 7, 8 between the ends of which is sealed an annular metal structure 9 having internally and externally projecting portions 11, 10 respectively, the end of the tube 7 adjacent the wafer having sealed thereto a further metallic member 17, portion 11 and member 17 being connected to the emitter and base electrodes (or vice versa). The transistor is sealed at one end by a copper block 21 which is electrically connected to member 17 and thus serves as the external base contact and at the other end by a block 12 which is soldered (16) to the nickel support rod so as to form the external collector contact. Structure 9 and member 17 are of silver-plated copper and are connected using a hot bonding process to their respective electrodes by gold wires 19, 20. The transistor (Fig. 1) is of the " mesa " type and comprises a wafer of p-type germanium a face of which has an n-type layer 0.0003 mm. thick obtained by diffusing antimony thereinto. Strips 2, 3 of gold and aluminium respectively are evaporated on to the n-type layer to a thickness of 0.0001 mm. and are then alloyed to the layer to a depth of 0.00008 mm. by heating the wafer to 500 C. followed by cooling. Part of the n-type layer is removed by etching to leave a " mesa " 4. An application of the device as an amplifier in a coaxial line transmission system is shown in Fig. 4. The contacts 14, 23 plug into recessed ends of inner conductors 37, 38 respectively, the walls of the recess being split so as to form a number of spring fingers 44. When member 32 is screwed into member 31 the emitter contact 10 is trapped between conducting washers 45, 46 which bear against the outer conductors of the cable.
Patent GB-1075728-A (GB)
Title: Improvements in or relating to solar stills
IPC: C02F1/14
Filed: 1965-08-25
Abstract: 1,075,728. Portable solar stills for distilling sea water. AQUADOR PLASTICS, Inc. Aug. 25, 1965 [Sept. 21, 1964], No. 36510/65. Heading B1B. In a portable solar still for distilling sea water contamination of the distilled water with sea water is prevented by a separator ring 40, of minimum diameter greater than the maximum diameter of the evaporator surface 19, disposed adjacent the bottom of the evaporator surface so that sea water, even when the still is floating on rough seas, is thrown onto the sea water side 42 of the ring for passage through loose joint 45 into compartment 15, while distilled water which has condensed on the inner surface of flexible, heat transmitting bag 11 is deflected by surface 46 through openings 47 into a compartment 16. A sea water reservoir 60 is positioned at the top of the still, details illustrated on Fig. 2, not shown, a distributing surface 77 being positioned beneath the reservoir which is served with sea water through a feed hole which is kept free of scale by a pendulum device 82. Compartments 15 and 16 are defined by a conical separator member 13 and each have valved tubes 49, 17 for withdrawal of water. A ring shaped stabilizer tube 20 filled with sea water causes the bag to float with its conical upper section extending upwardly.
Patent GB-638746-A (GB)
Title: Improvements in or relating to automatic stoking apparatus for furnaces
IPC: F23K3/00
Filed: 1946-12-11
Abstract: 638,746. Feeding fuel to brick kilns &c. RICHARDS, J. Dec. 11, 1946, No. 36553. [Class 51 (ii)] Also in Group XXX] In apparatus for feeding fuel to brick kilns or other furnaces, consisting of a rotary table 3 disposed at the base of a hopper 1 and co-operating with a fixed scraper 17 to feed fuel to a delivery shoot 20, said shoot is divided by a hinged door 21 mounted on a spindle 33 carrying a lever 32 which is actuated to open said door once ,for revolution of another contacting lever 31 fixed to a spindle 25 carrying a ratchet wheel 24 rotated intermittently by a pawl 30 on an oscillating lever 26 driven by a connecting rod 29. Movement of the door 21 releases fuel accumulated in the trap 22, said door being returned by a balance weight 36 which also acts to hold a locking pawl 37 on the ratchet wheel 24 during idle strokes of the operating pawl 30. The operating mechanism may be housed in a compartment 38 separated from the vent 23 which is fitted with an inspection cover 39. The feed table 3 is rotated step by step at constant speed by way of a ratchet wheel 13, shaft 11, pinion 10, crown wheel 9 and a shaft 4 operated by a connecting rod similar to the rod 29.
Patent GB-1380747-A (GB)
Title: Miniaturised potentiometers
IPC: H01C10/00
Filed: 1972-08-04
Abstract: 1380747 Potentiometers SOC FRANCAISE DE L'ELECTRO-RESISTANCE 4 Aug 1972 [31 Aug 1971] 36601/72 Heading HIS A rotary-contact potentiometer for use in miniaturized hybrid electric circuits comprises a metallic casing 1 containing a rotary slider 4 and its actuating member 3, and a resistor track 6 deposited on an insulating (alumina ceramic) support 5. The casing is provided with a hole 2 on one face to accept the slider-actuating member, and the opposite face is the external face of the insulating support which carries three separate metallized zones forming electrical connections and fixing the potentiometer into position. As shown, the member 3 is made by die-stamping from a sheet of, e.g. berylliumbronze coated with a noble metal and has a circular projection 19 engaging with the opening 2. A resilient tongue 28 abuts against shoulder 29 on casing 1 to prevent the control from being turned too far. The tongue yields if too much force is applied, to prevent damage. Lugs 20, 21 and 22 engage with slots 26 and 27 in the slider 4 and are bent back to hold the two pieces together. The slider 4 is larger than opening 2 so that it bears on the internal edges of the opening. It may be made of noble metal-coated beryllium bronze which after cutting-out and bending is heat treated to yield a Vickers hardness number of about 380. Support 5 has a resistor track of palladium-gold alloy screen printed on to it and tinned metallic areas 14 and 15. The external side has weldable metallic areas (7, 8, 9, Fig. 11, not shown) on it; areas (8 and 9) being contacted by terminal clips (16, 17, Figs. 8 and 9, not shown). The casing, which is of, e.g. nickel silver or gold-coated beryllium bronze, has lugs (10-13, Fig. 5, not shown) one of which bears on the internal face of the support while the others bear against metallic zone (7). The potentiometer is fixed by a remelting operation which welds the terminal clips to the support and circuit, and the support to casing and circuit. The circuit element is then ultrasonically cleaned The potentiometer is adjusted by using an insulated screwdriver in slot 23 or by means of an insulated knob added to member 3, and is then covered with an elastomeric cap.
Patent GB-828612-A (GB)
Title: Blade construction for rotary-wing aircraft
IPC: B64C27/473
Filed: 1955-12-21
Abstract: 828,612. Aircraft rotor blades. AEROTECNICA S. A. Dec. 21, 1955 [May 4, 1955], No. 36669/55. Class 4. An aircraft rotor blade comprises a streamlined leading edge and counterweight A of heavy metal, a front spar of light metal, preferably in two portions B, C, bolted or riveted as at 1 and 7 to the leading edge member, a narrow light metal spar E at the trailing edge, ribs D of light metal connecting the spars, metal fairing at each end of the blade, and a light non- metallic filler in the spaces between the spars and ribs. The spar portions B, C symmetrical about the horizontal plane through the blade chord, and are riveted or bolted together at 2, and the ribs D are likewise connected at 3, 3<SP>1</SP> and 4 to the spars. The ribs D are of V-shape, Fig, 2, with the edges flanged, Fig. 1. A V-shaped brace R is provided near the root to take centrifugal forces on the spar E. One arm of the brace is of X-section and the other of I-section. Holes 5, 6 are provided for pinning to a rotor head arm, The filler may be a fibrous material in sheet form. A layer of mastic or synthetic resin is spread over the filler, and the whole blade enclosed in a fabric cover.
Patent GB-1144991-A (GB)
Title: Automatic control of polymerization viscosity
IPC: B29C48/92
Filed: 1967-08-10
Abstract: 1,144,991. Automatic viscosity control. E.I. DU PONT DE NEMOURS & CO. Aug. 10, 1967 [Aug. 11, 1966], No.36804/67. Heading G3R. In a system in which polymer passes from a polymerization vessel through a hold-up chamber to a spinneret, viscosity is maintained constant in the latter by automatically controlling pressure in the vessel in dependence on deviations of viscosity at the input to the hold-up chamber from a reference value which is, in turn, controlled by a temperature-compensated measurement of viscosity at the output of the hold-up chamber. As shown, low molecular weight polymer is fed through an inlet 2 to a by-product separator 1 which is maintained at sub-atmospheric pressure by a steam jet 17 associated with a vent 3. Volatile by-product is discharged through vent 3 and the processed polymer passed through a hold-up chamber 4 in which viscosity increases until equilibrium conditions are reached by the time the polymer enters a spinneret 5 which extrudes it to form multi-filament yarn. Pressure within vessel 1, detected at 15, is compared with a pressure reference value in a recorder-controller unit 11 which corrects any difference by adjusting a valve 16 controlling the effect of jet 17. The pressure reference value is controlled by deviations of viscosity measured electrically by periodic vibration at 6, amplified at 8, converted to pneumatic form at 9, and compared with a viscosity reference value in a recorder-controller unit 10. The viscosity reference value is controlled by deviations of viscosity measured electrically at 7, amplified at 13, corrected for temperature by a resistance thermometer 12, and converted to pneumatic form at 14. The viscosity measurement at 6 may also be temperature compensated. Upper and lower limit relays (not shown) between units 10 and 11 prevent undue variations resulting from failure of the viscosity measuring apparatus.