baber/WOPTO huggingface dataset:
Patent GB-1282910-A (GB)
Title: Workpiece moving apparatus
Inventor: BLEWITT R
IPC: B65H1/14
Filed: 1969-11-18
Abstract: 1282910 Feeding sheets XEROX CORP 18 Nov 1969 [19 Nov 1968] 56394/69 Heading B8R [Also in Division H2] Apparatus for moving a workpiece, particularly for raising a stack of sheets or a table 20, Fig. 3, to a predetermined height by means of a motor drive, controlled by a device 44 sensing the height of the stack, comprises a motor control circuit having paths for delivering either alternating current to the motor for fast movement, e.g. raising of the table or half-wave rectified current for slow movement, e.g. raising of the table, the particular arrangement being such that the table is first raised at a fast speed, then at a lower speed as the stack top nears the predetermined position, and finally is stopped when the predetermined position is reached. As applied to an arrangement wherein the sheets are separated one by one from the top of the stack by suction devices 16 and fed forward by rollers 18, the table 20 is guided for vertical movement by rollers 22 situated in vertical channels 24. A cable 26 attached to the table 20 passes over a pulley 28 fixed to a shaft 32 driven by worm gearing 36, 38, Fig. 2, from a reversible motor 42. Initially the table is lowered by operation of a "down" switch which causes the motor to rotate in a direction to lower the table, a switch in the motor circuit being opened when the lowest position is reached. To raise the table an "up" switch is operated which causes rotation of the motor at a high speed in a reverse direction and opening of the down switch. At a certain point in the upward movement, the top sheet of the pile contacts a detector member 44 of generally U-shape in plan. The member 44 is fixed to a pivot shaft 48 to which is also fixed an arm 50, Fig. 2, urged by a spring 52 anticlockwise to a position where it closes two normally open switches 6LS, 10LS, and holds the member 44 in its lowest position. When the member 44 is raised by engagement therewith of the top of the stack, the arm 50 is pivoted clockwise, and first opens the switch 6LS which causes half-wave rectified current to be supplied to the motor so that it continues to raise the table but at a slow speed. After further clockwise movement of the arm 50, the switch 10LS is opened and raising of the table is stopped. As sheets are fed from the stack, the switch 10LS is actuated to keep the top of the stack at the required height. When the stack has been depleted, a switch (4LS, Fig. 5) is operated to lower the table without the necessity to operate the "down" switch. During actual feed of a sheet, a cam operates on the arm to raise the arm 50, open the contacts 6LS, 10LS, and move the member 44 temporarily out of contact with the pile.
Patent GB-1450697-A (GB)
Title: High voltage electrical insulator
IPC: H01B17/42
Filed: 1973-12-06
Abstract: 1450697 Electric insulators O NIGOL 6 Dec 1973 [8 Dec 1972] 56679/73 Heading H2C The body 10 of an insulator has its surfaces 17a, 17b entirely covered with a semiconductive layer, e.g. a glaze in accordance with Specification 1,408,210 and is such that the total of protected creepage distances KF is at least as great as the effective air clearance, namely the sum of distances AH, and the minimum air clearance AB is at least 3À5 inches, this distance being determined by the "splashing distance" of rain falling at 45 degrees to the axis of the insulator and the point K also being on a radius of 3À5 inches from point B. The surface resistively of the semiconductive layer should lie in the range of 5 to 200 megohms per square depending on system voltage in order that sufficient heat should be generated to inhibit moisture deposition. The electrical strength of the semiconductive layer in the protected areas is 10 kilovolts per inch. The semiconductive layers increase the capacitance of the insulator body as shown diagrammatically in Fig. 2. This results in an increase in the capacitive current which, flowing in the semiconductive layer, contributes to the surface heating. A string of six elements of the type shown in Fig. 1 having resistance values between 30 and 100 megohms give satisfactory performance on 230 kv A.C. lines. In further embodiments each insulator body comprises a plurality of downwardly depending bell-shaped portions (20<SP>1</SP>, 20<SP>11</SP>, 20<SP>111</SP>), Figs. 3-5, not shown); or a plurality of flared cones (30, Fig. 6, not shown) bonded together with conductive cement (31), which may alternate with bell-shaped spacers (34, Fig. 7, not shown). In still further embodiments (Figs. 8 and 9, not shown) the insulator body provides first one bell-shaped portion (35) with an upper terminal provided by a semi-conductive layer of relatively high conductivity (39, Fig. 8) or a metal cap (40, Fig. 9) and a lower terminal provided by a metal post (36, Figs. 8 and 37, Fig. 9) cemented into the insulator body by conductive cement grout 38.
Patent GB-1176336-A (GB)
Title: Moderation of Ruthenium Catalyst
IPC: B01J23/58
Filed: 1966-12-21
Abstract: 1,176,336. Hydrogenation catalyste. E. I. DU PONT DE NEMOURS & CO. 21 Dec., 1966 [23 Dec., 1965 (3)], No. 57277/66. Heading B1E. [Also in Division C2] A process for preparing an alkali-moderated ruthenium metal catalyst supported on Al 2 O 3 , BaSO 4 , or Kieselguhr comprises mixing at least 1 % of a basic alkali metal compound with the Ru and heating at 40-300‹. The alkali metal compound may be an oxide, hydroxide, carbonate, bicarbonate or alkoxide of Na or K. The Ru source may be a compound in which Ru forms either anion or cation e.g. RuCl 2  or Na RuO 4 . The alkali metal may be added in aqueous or organic solvents.
Patent GB-1224176-A (GB)
Title: Improvements in or relating to fluid control switching arrangements
Inventor: WHEELER KENNETH JOHN
IPC: F15B13/043
Filed: 1967-12-19
Abstract: 1,224,176. Valves. NORCON (NORRIS) Ltd. 18 Dec., 1968 [19 Dec., 1967], No. 57492/67. Heading F2V. A bi-stable spool valve has pilot needles 27B which, when positioned as shown by solenoids 27<SP>1</SP>, 27<SP>11</SP>, open and close respectively outlets 27A from the right- and left-hand chambers of bore 25. Fluid flowing from inlet 22 to the left-hand chamber via restriction 32 thereby serves to shift spool 26 to the right. Upon de-energizing solenoid 27<SP>1</SP> and energizing solenoid 27<SP>11</SP>, the spool will shift to the left. The connections between the inlet and the pressure chambers may alternatively comprise grooves in lands 33. Grooves 35 in the spool ends prevent the latter from closing outlets 27A. The solenoids can be energized by A.C. or D.C. currents, and control may be via a transistorized logic air unit. In Fig. 1, not shown, a monostable spool (6) is positioned by pilot valve (7) to connect a work port (3) to inlet (2) or exhaust (4).
Patent GB-1384393-A (GB)
Title: Method for producing rubberized asphalt mixture
IPC: C08L23/00
Filed: 1971-12-16
Abstract: 1384393 Batch mixing SAKIMURA RESEARCH INSTITUTE INC 16 Dec 1971 [19 Dec 1970] 58392/71 Heading B1C [Also in Divisions C3 and El] A conventional asphalt mix plant including a kettle, an asphalt weigh-bucket and a mixer is modified to produce rubberised asphalt by means of a control device and a rubber solution measuring and feeding device. The required amount of rubber solution sufficient for the production of one batch of rubberised asphalt is measured and then fed into the molten asphalt in the asphalt weigh-bucket in synchronism with the cycle of the asphalt mix plant during the idle time existing between the termination of the feeding of molten asphalt into the asphalt weigh-bucket and the commencement of the removal of the molten asphalt out of the asphalt weigh-bucket, this feeding operation of the rubber solution into the asphalt weigh-bucket being started after the termination of the feeding of the straight asphalt into the asphalt weigh-bucket and being ended not later than the end of the idle time to produce one batch of rubberised asphalt binder. In one embodiment (Fig. 2) after an interval of 2-3 seconds after the end of the feeding of the molten asphalt into the weigh bucket 7 an output signal is issued to the solenoid valve 19 by the time limit circuit 16 of the control device whereby the operation of the pump 18 for feeding rubber solution into the asphalt weigh-bucket is started. This operation is terminated after 3-30 seconds and then after a further interval of, preferably, 2-3 seconds, an output signal is issued to the regulating valve 8 installed downstream of the spray pump 9 of the mix plant to open the said valve, whereby the rubberised asphalt is pumped into the mixer 11 for mixing with one batch of heated aggregate.
Patent GB-1378799-A (GB)
Title: Air separators
IPC: B07B4/02
Filed: 1972-12-20
Abstract: 1378799 Air classifier ZANASI NIGRIS SpA 20 Dec 1972 [20 Dec 1971] 58843/72 Headings B2H and B2P  An air separator for sorting material consisting of particles or objects of approximately similar shape and size but of different weight comprises a vertical hollow sorting shaft 4 having an annular sorting chamber formed therein by means of a central column 6 and having its lower end 104 connected to a fan 1, for producing an ascending sorting current of air which is whirled, e.g. by means of a ring of guide vanes 5, and to an outlet 13 for the heavier particles- or objects, the upper end of the shaft being connected to a feeding appliance 11 for the material to be sorted, which terminates centrally at a distance above a rebound surface 106 on the upper end of the column 6, and to a separating device 8 for separating the sorting air from the lighter particles or objects. The separator may be used for sorting gelatine capsules C into heavier capsules filled with a pulverulent and/or granular filling material ormedicament and lighter empty and/or insufficiently filled capsules. The air supply may be adjusted byuncovering suction openings 101 of the fan 1 by a regulator flap and the degree of whirling of the ascending air current may be controlled by vanes of adjustable pitch or By having interchangeable vane rings. The guide vanes are radial and inclined to the horizontal to provide a rotating helical air current. The rebound surface 106 is in the form of a circular disc preferably provided with an impact-absorbing lining of foam rubber or foam plastics. The separating device 8 is in the form of a cyclonic chamber bounded by an air-permeable, e.g. wire-mesh, wall and having a generally tangential outlet 12 for the lighter capsules. The feeding appliance 11 consists of an inclined chute 111 formed at least by a sieve and terminating into a vertical drop tube 10. The capsules 10 to be sorted are fed on to the chute 111 where part of the loose pulverulent and/or granular filling and fine materials adhered to the capsules falls through the sieve. The capsules drop from the tube 10 on to the rebound plate 106 and thence enter the annular sorting chamber in the shaft 4 horizontally where they then fall vertically against the ascending whirling air current which cleans the capsules of the remaining fine particles adhering whereto and carry these and the empty and insufficiently filled capsules into the cyclonic chamber 8 where the air and the entrained fine particles are centrifuged through the wire-mesh wall of the chamber into a surrounding dust filter 14 which retains the particles. The lighter capsules are discharged through the generally tangential outlet 12 while the heavier capsules, which fall against the ascending air current, are discharged at the bottom of the shaft through the outlet 13 which is also generally tangential.
Patent GB-1454556-A (GB)
Title: Ice-cream making appliance
IPC: A23G9/12
Filed: 1973-12-21
Abstract: 1454556 Mixing apparatus ETUD SA 21 Dec 1973 [4 Jan 1973] 59378/73 Heading B1C [Also in Divisions F4 and H1] In an appliance for making ice cream etc which includes means responsive to the viscosity of the ice cream mix to retract mixing blades from the tank containing the mix, see for example U.K. Specification 1375457, the appliance also includes means responsive to the retraction of the mixing blades to disconnect the motor driving the blades and actuate an alarm device. The motor has a winding 77 and drives a shaft head 7' and a toothed gear wheel 78. The mixer blades are mounted on the shaft head 7'. The wheel 78 meshes with a combined pinion 79 and gearwheel 80 rotatable about a shaft 81. the combination being urged upwardly by a spring 82. One end of a bimetallic strip 76 is in contact with the winding 77 and the other is attached to a snap-action microswitch 75. In operation of the appliance, the bimetallic strip 76 becomes heated and bends inwardly. As the preparation thickens and sets, the drive force required increases causing the gearwheel 80 to be progressively lowered. When the mixer blades are automatically removed, the gearwheel 80 under the action of the spring 82 rises and pushes the mobile armature 84 of the microswitch upwardly, thus stopping the motor and actuating the alarm. After a cooling period, the strip 76 assumes its original straight form (see Fig. 2). A pushbutton 83 is used to reset the armature 84.
Patent GB-1324487-A (GB)
IPC: B60T15/18
Filed: 1971-12-29
Abstract: 1324487 Brakes ROBERT BOSCH GmbH 29 Dec 1971 [28 Dec 1970] 60357/71 Heading F2F A coupling member 10 for use in the brakeline 5 of a vehicle semi-trailer braking system which has separate air and braking lines 5, 6, each with a connector 8, 9 and 7, 10, respectively, has a closure valve 16 which cuts off the air supply and vents the brake system to apply the automatic brake when the brake connector 7 is not in place. In this condition, the sleeve 14 is held down by spring-pressure so that spring- loaded valve 16 closes on seat 13 to cut off the air supply at 11, 12 from line 6, and to vent the trailer braking system of air via the space 17 and tube 14, and via tube 25, space 23, both through the unconnected opening 22. Insertion of coupling member 7 to connect the brake line 5, closes valve 14, 16 and opens 13, 16 to feed air over line 19 to regulator 20 and reservoir 21 in the normal way, brake control pressure also being applied at line 24, 25.
Patent GB-1247200-A (GB)
Title: A method of making a moulded refractory article
IPC: C10C1/19
Filed: 1968-12-30
Abstract: 1,247,200. Mouldings incorporating pitch or tar. KUREHA KAGAKU KOGYO K.K., and K. UMEYA. 30 Dec., 1968 [29 Dec., 1967], No. 61713/68. Heading B5A. [Also in Divisions C1, C3 and C5] An article, e.g. a firebrick or an electrode, is made by compression moulding a mixture of a pitch obtained by heating a liquid hydrocarbon and a powdered refractory material, e.g. dolomite, magnesia, calcium oxide, thoria, chromium oxide, yttria, alumina, silica, mullite, carbon, silicon carbide, silicon boride, or silicon nitride. The pitch may be pulverized and mixed with the refractory powder at a temperature below the softening point of the pitch, the mixture kneaded with a coal tar fraction or a petroleum fraction, and then moulded, or the heated pitch may be flowed on to the heated refractory powder, and the mixture kneaded, and charged to a mould.
Patent GB-2004072-A (GB)
Title: Rail profile gauge
IPC: G01B5/14
Filed: 1978-09-06
Abstract: The invention relates to a method of and apparatus for measuring the variation in profile along rails or bearing races. Machinery such as earth moving equipment frequently has to move across uneven surfaces, the result of which is that an uneven load distribution is created in a roller or rolling bearing element supporting an upper body part from a lower body part, and which frequently results in premature failure of the rolling bearing element. The object of the invention is to provide relatively simple, reliable method and means for measuring trueness of a rail or face around large bearings. This is achieved by attaching a support frame 18 to a cage assembly of a roller or rolling bearing, supporting sensing means 26 on the support frame to monitor the variation in distance, in the direction of applied load between the support frame and a bearing rail 29 locating the roller or rolling bearings 13, and recording the variation in rail profile during rotation of the upper body part of the machinery with respect to the lower part. The invention thereby provided very early warning of rail or bearing profile distortion in a manner that can be performed on site very quickly so that down time of the machinery is significantly reduced. <IMAGE>
Patent GB-2003814-A (GB)
Title: Roller conveyor and drive means therefor
IPC: B65G13/02
Filed: 1978-09-08
Abstract: Drive means for a powered roller, accumulating conveyors incorporates a friction wheel drive (42, 60) for transmitting driving forces to any given zone of the conveyor, independently of all other zones, from a single powered endless belt (26, 28) in a first embodiment and from chain driven sprockets in second and third embodiments. In the first embodiment a pressure roller (42) is pivoted longitudinally and downwardly to a position in which it is wedged between the lower course (28) of a belt and the friction wheel (60) to transmit drive forces from the former to the latter and thus to the load carrying rollers (16), and in the second and third embodiments a chain driven pressure roller is pivoted longitudinally and downwardly into driving engagement with a friction wheel. <IMAGE>
Patent GB-2032371-A (GB)
Title: A wind propelled propulsion unit
IPC: B63H13/00
Filed: 1978-11-23
Abstract: A wind propelled propulsion unit for a water-borne craft comprises a rotatably mounted vertical mast which drives centrifugal vanes enabling propulsion of the craft through water on rotation of the mast due to the unequal resistance to wind of two wind vanes which are fixedly attached to the mast and which are adjustable in configuration according to the wind direction. These vanes comprise flexible sheet material stretched over a framework to produce part-cylindrical vanes and the adjustability of configuration is achieved by a cantilever arrangement whereby the curvature of the vanes can be reversed allowing continued propulsion of the craft in the event of reversed wind direction. Alternatively the wind vanes may be rotatable about a horizontal axis through their centres so that their configuration can be reversed by a 180 DEG  rotation, about this axis. <IMAGE>
Patent GB-2013170-A (GB)
Title: Anaerobic treatment of waste to produce methane
IPC: C05F3/06
Filed: 1978-12-20
Abstract: The invention relates to a method for treating waste products in particular animal manure slurries to produce methane. In the method of the invention acidification and methanogenesis is carried out in two separate stages and in separate containers. The slurry is first held in a holding tank to allow acidification to occur and a liquid fraction comprising the volatile acids produced is separated from a solids fraction. The liquid fraction is then passed to an anaerobic digester in which the methane bacteria is supported by a holding matrix. The invention also includes apparatus for use in the method comprising a holding tank in which acidification of the slurry occurs, means for separating the liquid and solids fractions of the slurry, means for feeding the liquid fraction to the digester which contains the holding matrix, and means for removing methane and residual effluent from the digester.
Patent GB-2014149-A (GB)
Title: Maltulose-containing syrups and process for making same
IPC: C13K13/00
Filed: 1979-01-22
Abstract: Sweet, non-crystallizing (at concentrations of 75% solids or above) syrups have the following saccharide composition: dextrose, from 20% to 40%; levulose, from 20% to 40%, maltulose, from 10% to 60%, total ketose composition (principally levulose and maltulose), 40% to 80% (percentages by weight dry basis.) Optionally, the syrups may contain up to 25% maltose and/or up to 20% higher saccharides (i.e. having degrees of polymerization of greater than 2.) The syrups are prepared by first subjecting a starch hydrolyzate, containing at least 40% maltose and not more than 5% dextrose, to an alkaline isomerization treatment to isomerize a portion of the maltose to maltulose, the isomerization being conducted until the resulting hydrolyzate contains between 10% and 60% maltulose; then treating the resulting product with glucoamylase to saccharify at least a portion of the remaining maltose (as well as higher saccharides, if present) to dextrose, and finally, subjecting that hydrolyzate to an isomerization reaction to isomerize up to 50% of the dextrose to levulose.
Patent GB-2048062-A (GB)
Title: Operating Head for Fire Extinguisher
IPC: A62C13/64
Filed: 1979-03-19
Abstract: A fire extinguisher cylinder 10 has a neck ring 12 formed with an axially directed outlet hole or pipe 14 for pressurised fire fighting medium. The outlet hole is sealed by means of a thin metal disc 16. A firing head 19 has an axially slidable piston 26 which actuates a piercing member 21 and is held in its rest position by means of a locking pin, which fits into bores 30 of the firing head. When the pin is removed, a coil spring 27 forces the piston 26 downwardly so that the piercing member 21 penetrates through the disc 16 to permit the fire fighting medium to escape through flow space 20 and passage 35. The firing head is of simple construction and easy to operate and is suitable for operation manually by removal of the pin or remotely by means of a cartridge actuator 37 and associated firing pin. <IMAGE>
Patent GB-2016934-A (GB)
Title: Exercising Apparatus
IPC: A63B24/00
Filed: 1979-04-10
Abstract: A stand (1,7,13) for a bicycle (9) holds it with the rear wheel engaging a roller (22) and the user pedals against the resistance of a roller (22) governed to offer different levels of resistance at different stages in the programme. A variable power electric motor (21) may attempt to drive the roller against the drive from the bicycle and a counter (24) can register the roller revolutions to determine, by reference to a replaceable programme control element (25) what stage has been reached and hence the power to the motor. The same principles can be applied to other exercise machines not using bicycles or pedals. <IMAGE>
Patent GB-2028885-A (GB)
Title: String Construction and Method of Making Same
IPC: A63B51/02
Filed: 1979-05-21
Abstract: An integrated string primarily for use in connection with athletic rackets, such as tennis, badminton, squash and the like, but also usable for fishing line, musical strings, etc., comprises high melting point and low melting point thermoplastic materials integrated by melting of the low melting point material, one embodiment comprising a thermoplastic core having a thermoplastic sheath, and a second embodiment consisting of a braided sheath with no inner core, said sheath comprising thermoplastic strands having substantially different melting points.
Patent GB-2025543-A (GB)
Title: Clutch diaphragm springs
IPC: F16D13/58
Filed: 1979-07-05
Abstract: A diaphragm spring (14) for use in a motor vehicle clutch has the ends (18) of the spring fingers shaped to present a generally conical face for centering a co-operating release bearing (16), such face presenting an increasing self centering effect as the spring (14) is deflected to release the clutch driven plate (11). In one embodiment the release bearing (16) is resiliently held for limited radial movement on the diaphragm spring (14) by a collar (23, 24) embracing the spring finger ends (18) and co-operating with at least three offset diaphragm spring fingers. <IMAGE>