baber/WOPTO huggingface dataset:
Patent GB-1295739-A (GB)
IPC: H02P7/28
Filed: 1970-07-07
Abstract: 1295739 Control of DC motors GENERAL ELECTRIC CO 7 July 1970 [7 Aug 1969] 32806/70 Heading H2J A control system intended for controlling a D.C. motor in a crane hoist drive in which the motor is operated in its regenerative mode with its direction of rotation reversed to control the speed of lowering of the crane load includes controlled rectifiers supplying energy to the motor from an A.C. source. These rectifiers may comprise S.C.R.'s, ignitrons or thyratrons and protective circuits are provided responsive to critical conditions of the system to protect the rectifiers from failure when the system enters a coasting mode of operation. As shown in the block diagram of Fig. 1 an A.C. source 10 supplies energy to the drive motor 14 through a power amplifier 12 comprising controlled rectifiers 16, 18. The rectifiers 16, 18 are controlled by a command source 28 which determines the direction of rotation of the motor by operation of the appropriate rectifier. The source 28 also supplies a modulated signal to the junction 30 for controlling the motor speed, the desired speed being compared at the junction with the actual speed on a line 33 connected to a feedback signal source 22. The command signal to drive the motor in the required direction at the desired speed is generated in a preamp and power supply 36, this signal being applied to a forward direction amplifier 38 or reverse direction amplifier 40 which provide, respectively, firing signals for the. rectifier 16 or rectifier 18 through protective circuits 48 and firing control circuits 46. The command source 50 may also supply an "emergency stop" signal on a line 50. The protective circuits 48 function to protect the rectifiers 16, 18 by automatically retarding the occurrence of firing signals for the rectifiers when the coasting mode of operation is required. The coasting mode is entered automatically when an overcurrent condition is sensed by current transformers 52, 54 connected to lines 56, 58 constituting current feed-back circuits, and is also entered when an emergency stop signal is applied on line 50. The protective circuits also include means responsive to the level of current in lines 56, 58 to positively prevent elimination of the firing signals by a lockout circuit until the current flow between the A.C. supply 10 and motor 14 is below a preselected level. Once the circuits have retarded the firing of the rectifiers 16, 18 while allowing the current flow to decrease below the preselected level the firing signals are positively locked out so that the motor coasts to a stop and the drive system must be restarted before motor rotation can be resumed. The firing signals are retarded to occur at a position after the voltage on the controlled rectifier has crossed the zero axis and preferably the position is selected corresponding to a phase angle of 30 degrees occurring after the voltage has crossed that axis. Details of the control circuitry are described with reference to Fig. 4 (not shown).
Patent GB-1296340-A (GB)
IPC: A61K/
Filed: 1971-08-12
Abstract: 1296340 Preparation of 6-deoxytetracyclines ALFA FARMACEUTICI SpA 12 Aug 1971 [24 Feb 1971] 37846/71 Heading C2A A process for preparing a 6-deoxytetracycline or a salt thereof comprises hydrogenating a corresponding 6 - methylene - 6 - deoxytetracycline or a salt thereof in the presence of a nickel or cobalt catalyst, followed by salification if required. Raney nickel and Ranoy cobalt are suitable catalysts. In particular, a process for preparing a 6-deoxytetracycline of Formula I or a salt thereof comprises hydrogenating a corresponding 6 - methylene - 6 - deoxytetracycline of Formula II or III wherein R is hydrogen or hydroxyl and X is chlorine or bromine or a salt thereof in the presence of a nickel or cobalt catalyst, followed by salification if required. An example of a tetracycline which may be prepared according to this process is 6-α-deoxy-5-hydroxytetra. cycline. Examples of tetracyclines which may be hydrogenated according to this process are 11 - α - chloro - 6 - deoxy - 6 - methylene- 5- hydroxy-tetracycline or 6-deoxy-6-methylene- 5-hydroxytetracycline or a salt thereof. The weight of catalyst employed may be 1% to 30% of the weight of the tetracycline to be hydrogenated. The hydrogenation may be carried out in the presence of a catalyst promoter, e.g. a hydrosoluble salt of copper, zinc, chromium, molybdenum, cerium, platinum, palladium or rhodium. The weight of the promoter may be from 0À01% to 5% of the weight of the nickel or cobalt catalyst used.
Patent GB-1305241-A (GB)
IPC: B65D88/72
Filed: 1970-04-21
Abstract: 1305241 Pneumatic conveyers; emptying containers R MURFITT Ltd 21 April 1970 19026/70 Addition to 1210225 Headings B8A and B8E The apparatus for discharging powdered material from a container as described in the parent Specification is modified in that the tippable container c is provided with a plurality of poppet valves 54 for the input of fluidizing air, and each poppet valve in the non-tippable chamber is situated vertically above the associated material discharge outlet, Fig. 3 (not shown). The plurality of valves 54 are each associated with an isolating valve in a branch supply line 56, 57, 58 coupling the valves 54 to a pipe-line 55 supplying air to the container material discharge nozzle N. In the embodiment of Fig. 3 (not shown) the valve head is provided with a conical shroud.
Patent GB-1309860-A (GB)
Title: Locating elongate magnetic-elements
IPC: H01F7/02
Filed: 1970-12-09
Abstract: 1309860 Making reed contacts PLESSEY CO Ltd 3 Dec 1971 [9 Dec 1970] 58425/70 Heading H1N [Also in Division B3] Apparatus for locating a series of reed contacts 15 in holes 2 in a V-shaped trough during manufacture of magnetic reed contact units includes means producing a rotating magnetic field below the trough. The field is produced by permanent magnets 4 mounted on opposite sides of a shaft 5 mounted in bearings 6 and rotatable by a belt 7 which may be driven by the same drive mechanism (not shown) as a belt 27 which drives a shaft 23 and arm 24. The arm 24 carries magnets 25 and a counterweight 26 and as it rotates surplus reeds 15 are attracted from the trough on to a drum 22 which rotates with the shaft 23 to deposit the surplus reeds in a shoot 29. The trough may be of chromium plated brass with sides at an angle of 120 degrees. One side may be removable.
Patent GB-1313751-A (GB)
Title: Golf clubs
IPC: A63B53/12
Filed: 1969-02-12
Abstract: 1313751 Golf club shaft J H ONIONS 11 May 1970 [12 Feb 1969 1 March 1969 4 March 1970 31 March 1970] 7466/69 11080/69 10309/70 and 15035/70 Heading A6D A flexible golf club shaft includes stiffening means inside and running the length of the shaft controlling the flexing of the shaft in a direction at right angles to the striking face of the club head. In the Figure, tubular shaft 6 has circular external cross-section and internal longitudinally extending thickened wall portions 9 at diametrically opposed positions. The club head is schematically indicated at 7 with striking face 8. Other embodiments provide radially inwardly directed longitudinally extending spines at each end of a diameter at right angles to the striking face, and a longitudinally extending stiffening internal strip across the interior of the shaft on a diameter at right angles to the striking face.
Patent GB-1317308-A (GB)
Title: Transparent plastic sheets
IPC: B32B15/02
Filed: 1970-08-27
Abstract: 1317308 Laminates IMPERIAL CHEMICAL INDUSTRIES Ltd 2 Aug 1971 [27 Aug 1970] 41244/70 Headings B5A and B5W A light transmitting plastics sheet contains therein at least one metallic wire mesh spaced from the light incident surface by a distance of at least twice the thickness of the wire, said mesh having an open area of between 25 and 75% and a wire spacing of at least 8 wires to a ecntimetre. The term " open area " is defined as being the proportion of the area occupied by the mesh which is not of mesh material. The term " metallic wire mesh " is defined as including a mesh in which the wires are made of suitably metallized inorganic or organic polymeric fibres or filaments. Specified materials for the mesh are galvanized mild steel, tinned mild steel, stainless steel, copper, aluminium, silver, nickel, tin and metallized polyester fibres. The plastics sheet may be of thermoplastic or thermosetting material, e.g. polymers and copolymers of vinyl chloride or methyl methacrylate and may contain plasticizers, fillers, impact improvers, processing aids or stabilizers. The mesh may be incorporated within the sheet by placing the mesh within an injection, compression or open mould and forming the sheet by injection or compression moulding or coating around the mesh or by co-extruding the sheet and the mesh; alternatively, the mesh may be pressed between foils of plastics material.
Patent GB-1328486-A (GB)
Title: Axial water flow machines
IPC: F03B13/10
Filed: 1971-02-04
Abstract: 1328486 Axial flow hydraulic pumps and turbines ENGLISH ELECTRIC CO Ltd 3 May 1972 [4 Feb 1971] 3970/71 Heading FIT F1C [Also in Division H2] An axial flow hydraulic turbine, pump or pump/ turbine having the rotor of an electrical generator or motor secured to the tips of runner vanes 20 includes feeding means for one or more rotor services connected between the rotor and a non-rotatable portion of the machine via hub 18. In one arrangement cooling water is supplied through a pipe 70 disposed in fixed stub shaft 10 and flows through duct 63 in a structure 36 supported by spider 82 so as to rotate with hub 18. The cooling water thence flows through pipes (not shown) to a chamber 66, Fig. 3 (not shown) at the base of one of the tie rods 68 extending through runner vanes 20. Rods 68 are hollow so that the water can flow therethrough and thence around the rotor windings 24, Fig. 1 (not shown) before returning through another rod 68 and chamber (66), duct 67 and a further pipe 70. Face seals 72 are provided between the ends of pipes 70 and ducts 63, 67 to prevent cooling water leakage during rotation. Excitation current is also supplied to the windings (24) via slip rings 74 and insulated copper conductors disposed in axial grooves in tube 60 and connected to leads passing through rods 68. The vanes 20 may be angularly adjustable, in which case an axially slidable valve 46, Fig. 2 (not shown) may be disposed within structure 36 to control oil distribution to a piston and cylinder pitch change mechanism (26, 28) contained within hub 18. A thrower (76) may be provided on tube 60 to prevent any water leaking past seals 72 from contacting slip rings 74. Reference has been directed by the Comptroller to Specifications 1290134, 1265151
Patent GB-1330164-A (GB)
Title: Additive compositions for concrete mortar and other prtland  cement materials
IPC: C04B28/04
Filed: 1970-09-04
Abstract: 1330164 Emulsions; concretes FATS & PROTEINS RESEARCH FOUNDATION Inc 4 Sept 1970 42423/70 Headings C1A and C1H An oil-in-water emulsion for use as a Portland cement additive comprises an oil phase including a mixture of biologically occurring glycerides and uncombined fatty acid, said fatty acid being in an amount no greater than 40% by weight of said mixture and a water phase dispersing a pulverulent mineral selected from silica flour, talc, powdered clays, mica dust and diatomaceous earth of fineness at least 140 mesh (Tyler) and when combined with the oil phase being present in an amount at least 35% by weight of the combination, hydrated lime in amount not exceeding 45% by weight of the oil phase and pulverulent mineral, and calcium chloride in an amount of at least 5% by weight on the same basis. Suitable fatty substances which include in themselves uncombined fatty acid are Choice White Grease, No. 1 Dark Tallow, No. 2 Dark Tallow and crude non- degummed soybean oil other oils specified are linseed, corn, codfish, herring and sperm whale oils. Hydrated dolomitic lime containing Mg(OH) 2  may be used in place of hydrated lime. Calcium carbonate or other alkali metal or alkaline earth metal carbonates may also be included as optional ingredients of the composition. The emulsion may be prepared by adding the calcium chloride and pulverulent material to water and after solution of the calcium chloride, adding the hydrated lime (and optionally calcium carbonate), mixing in a colloid mill and adding the fatty material until an emulsion is formed. Alternatively the fatty material may be dissolved in a solvent such as toluene or mineral spirits, the lime and pulverulent material added with mild agitation, and the water in which the calcium chloride has been dissolved added slowly to the organic mixture. The solvent may be present in the product in an amount approximating to 30% of the solids present. The additive confers water repellancy on a cement sand mixture.
Patent GB-1333784-A (GB)
Title: Treatment of waste gases
IPC: C01B17/04
Filed: 1971-10-27
Abstract: 1333784 Sulphur; treatment of waste gases BRITISH GAS CORP 27 Oct 1971 [27 Get 1970] 51062/70 Heading C1A Sulphur is produced from a gaseous mixture containing hydrogen sulphide and sulphur dioxide by reaction in the presence of a catalyst comprising oxides of nickel and uranium. Preferably the catalyst is supported on a carrier of active alumina, bauxite or corundum; silica, kaolin, powdered brick or an alkaline earth metal oxide or mixtures thereof may also be used. Nickel oxide may be present from 1 to 20%, and uranium oxide from 2 to 15% both by weight of the metal based on the total weight of the catalyst including carrier. Any carbon disulphide and/or carbon oxysulphide present in the gas stream may also be converted into hydrogen sulphide by reaction with steam which in turn is caused to react with the sulphur dioxide. Any traces of hydrogen sulphide in the effluent gas may be removed by a further desulphiding stage: any traces of sulphur dioxide may be washed out using sodium carbonate solution.
Patent GB-1333934-A (GB)
Title: Mineral mining equipment
IPC: E21C35/19
Filed: 1971-09-29
Abstract: 1333934 Mineral-mining pick assemblies MATTHIAS SPENCER & SONS Ltd 29 Sept 1971 [16 Oct 1970] 49231/70 Heading E1F A pick-pick box assembly comprises a box 10 having an elongated slot 11 aligned with the intended cutting direction of the assembly and having at least one end open for the endwise insertion or withdrawal of a portion of the shank of a pick, the slot and the shank being of complementary cross section and in the case of the slot of a cross section having a reduced width portion 12 disposed between an inner part cylindrical portion 13 and an outer portion with outwardly diverging flanks 14.
Patent GB-1344252-A (GB)
Title: Electrical measuring or indicating instruments
IPC: G01R5/04
Filed: 1970-01-21
Abstract: 1344252 Electric meters TAYLOR ELECTRICAL INSTRUMENTS Ltd 19 April 1971 [21 Jan 1970] 3028/70 Heading G1Q Each bearing 21, Fig. 4 of an electric meter screws into an expansible bush 30 which is thereby held tightly in an aperture 10n of a frame. The bush may also secure a control-spring anchor/ zero adjuster 25 to the frame. In the moving coil instrument shown Fig. 2 the internal permanent magnet core is fitted with upper and lower end plates 15, each of which has a pair of two-pronged projections 14a, b slotted over receiving portions 10j, 10k of the sheetlike metal frame 10a, b. Recesses 10e-h in the frame below the receiving portions allow easy removal of the core by shifting it axially. The upper and lower parts 10c, d of the frame are bent over to act as bearing supports. The frame itself slides into slots 40c, d in the annular yoke 40 and is retained in position by a spring clip 42 which fits into slots 10p, q in the frame. A pointer stop 43 is clamped between the upper part of the yoke 40 and a projection 10γ or s of the frame. The yoke has mounting extensions 40a, b.
Patent GB-1344408-A (GB)
Title: Packaging
IPC: B65D75/30
Filed: 1972-10-24
Abstract: 1344408 Packages PRATT MFG CORP 24 Oct 1972 48860/72 Heading B8C A package comprises a pair of superimposed panels 12, 14 enclosing a flat article 11 and secured together by a surrounding seal pattern 16, 16<SP>1</SP>, the panels extending outwardly from the seal 16<SP>1</SP> at one edge of the package to form a pair of dust flaps which are folded on to the panel 12 with only the inner flap being sealed to the panel. The panels may be composed of white sulphite or bleached kraft and sealed together by a heat-sealable or pressure sensitive adhesive. Alternatively one or both panels may comprise a heat-sealable film. The articles 11 may be fed on a conveyer 10 inbetween two endless webs which are sealed together by a sealer 18 and then severed by a knife 20. The severed packages fall on to a conveyer 22 where a plough 25 folds the dust flaps over and a sealing and creasing wheel 29 rolls the flaps down.
Patent GB-1353111-A (GB)
Title: Flow control assemblies
IPC: F15B15/14
Filed: 1972-01-26
Abstract: 1353111 Valves APV CO Ltd 10 Jan 1973 3646/72 and 3647/72 Heading F2V The flow control assembly of Specification 1,289,998 is modified in that the gasket is dispensed with and the control arrangement has a base 13 with two locations 31, 32 for mounting solenoid-operated pilot valves. First location 31 has an opening 33 communicating with a pressure line inlet 36, an opening 34 communicating with a connection 39 to the remote end of the actuating cylinder and an opening 26 communicating directly with the near end of the cylinder. The second location has an opening 44 communicating with a connection 45 to the remote end of the cylinder and an exhaust slot 46. A connection 42 communicating with the inlet 36 can be closed or connected to the top end of a solenoid pilot valve mounted at the second location. According to how the pilot valve is mounted at the first location the cylinder is single-acting in one or other direction and if a second pilot valve is mounted at the second location the cylinder is made double-acting.
Patent GB-1353586-A (GB)
Title: Processing machines
IPC: G03D3/13
Filed: 1970-03-13
Abstract: 1353586 Feeding webs DEBRIE-LAWLEY Ltd 19 April 1971 [13 March 1970] 12336/70 Heading B8R [Also in Division G2] A web 10, e.g. a cine-film, is guided in a serpentine path through a series of processing compartments 3, 4 by means of banks 14 of rollers 17, 19 arranged in upper and lower rows as shown. The upper rollers 17, except for the inlet roller to the first compartment 3, are mounted on shafts 21 each of which co-operates with a pivotally mounted driving roller 73 itself co-operating with a roller associated with a sprocket wheel 65 engaging an endless chain 55 driven by a motor 49, the inlet roller being positively driven from the chain 55 by means of a further chain and sprocket 69. The lower rollers 19 are mounted in saddles (29) Fig. 2 (not shown) which can move vertically under the pull of the web, this movement being communicated to the driving rollers 73 by way of a linkage including a connecting rod 35. The web is withdrawn from the processing apparatus by a take-up motor 35 at the same rate as it is fed into the apparatus by the positively driven roller 17, and each cradle 29 normally remains near the bottom of its compartment 3 or 4. However, should the length of web within a bank 14 decrease during operation of the apparatus, the relative cradle (29) will lift and urge its associated roller 73 upwardly, thus reducing or disengaging the drive from sprocket 65 to the co-operating upper roller 17, whereby the rate at which web is drawn from the bank 14 decreases and the cradle 29 moves down to its initial position. Should the length of web within a bank increase, the loops become loose and the positive drive into the bank is reduced to restore the position. Thus the arrangement tends to drive the web through a compartment at a constant speed with a constant length of web in the compartment throughout processing.
Patent ID-28404-A (ID)
Inventor: CONNER WILLIAM A
IPC: G02C1/02
Filed: 1999-10-21
Abstract: Attachment of a bridge (18) and temple hinge (32) to the lens (12) of eye glasses. The attachment is accomplished by providing a pair of apertures (30) of a selected configuration in each lens adjacent to the outer and inner surface of the lens, a bushing (24) conforming to the lens apertures with a tapered aperture through the center thereof from front to back and tapering the distal ends of the bridge and temple hinges. This combination when in place in the lenses apertures provides a friction lock between the lens and the bridge and temple hinge. The taper can be in the range of 1 to 45 degrees. In another embodiment the lens can also have a tapered aperture either convergent from the front to the back of the lens or divergent from the front to the back of the lens. Ideally a taper of 4.5 degrees in the bushing is preferable with less taper in the lens apertures when tapered lens apertures are utilized. The taper can take the form of a frusto conic section, a cylinder, a rectangular or triangular in cross section. The distal ends of the bridge and temple hinge can be inserted either from the front of the lens toward the back or from the back toward the front. The distal ends of the temple hinge can be inserted directly into the aperture within the bushing for attachment or can additionally be bent formed to provide a bias between the outer surface of the lens adjacent the aperture for non rotational support. In some applications a notch is provided at the outer lens surface and the bent formed portion of the temple hinge is nested therein for additional mechanical support and to increase the resistance of relative rotation of the bridge or temple hinge.
Patent IL-104647-A (IL)
Title: Medical probe device
IPC: A61F7/00
Filed: 1993-02-08
Abstract: A medical probe device comprises a catheter (48) having a stylet guide housing (50) with one or more stylet ports (140) in a side wall thereof and a stylet guide (16) for directing a flexible stylet (17) outward through the stylet port and through intervening tissue at a preselected adjustable angle to a target tissue. The total catheter assembly includes a stylet guide lumen (61) communicating with the stylet port and a stylet positioned in said stylet guide lumen for longitudinal movement from the port through intervening tissue to a target tissue. The stylet can be an electrical conductor enclosed within a non-conductive layer (60), the electrical conductor being a radiofrequency electrode. <IMAGE>
Patent IL-120587-A (IL)
Title: Reagent test strip for determination of blood glucose
IPC: G01N33/66
Filed: 1997-04-01
Abstract: A reagent test strip is adapted for use in a blood glucose meter. A sample of whole blood is applied to one surface of a matrix on the strip and the meter measures the reflectance of the opposite surface of the matrix at about 635 nm and 700 nm and calculates from the reflectance the concentration of glucose in the sample. The portion of the applied sample that penetrates the matrix and is visible from the testing surface does not absorb to any appreciable extent at 700 nm. Nevertheless, the glucose-containing sample interacts with the components of the reagent-containing matrix to cause a change in reflectance at 700 nm that simulates the effect of the blood color. As a result, the strip can be used in meters that measure glucose concentration in whole blood samples in the presence of optically visible hemoglobin. <IMAGE>