baber/WOPTO huggingface dataset:
Patent GB-1449347-A (GB)
Title: Apparatus for the indirect heat treatment of liquids
IPC: B01D19/00
Filed: 1974-01-16
Abstract: 1449347 Rotary evaporators LIQUID PROCESSING AB 16 Jan 1974 [17 Jan 1973] 02117/74 Heading B1B [Also in Division F4] Apparatus for evaporating a liquid by indirect contact with a heating fluid comprises a frusto-conical rotor body 4 mounted on a central hub 5 for rotation in a vacuum-tight casing 1 via a shaft 6 driven by a motor 7. The rotor body 4 comprises a perforate partition 11 which together with inner and outer walls 12 and 15 define flow and return passages 16 and 13 for the heating fluid which may be a liquid. The upper ends of partition 11 and inner wall 12 are connected to the central hub 5 while the upper end of outer wall 15 is rotatably connected to the casing 1 by a ring seal 18. Flow agitating means in the form of vanes or helically wound wire can be arranged in the flow passage 13. Heating fluid enters the outer rotor passage 16 via a conduit 24 in a sationary connecting header 3 and, leaves the inner rotor passage 13 via a channel 21 in hub 5 and a conduit 19 in header 3. The liquid to be heat treated, e.g. concentrated, distilled or fractionally distilled, enters the casing 1 via an inlet conduit 26 and passes through a preheater coil 27 before being directed onto the upper end of the inner rotor wall 12 via a nozzle 28; the liquid then flows downwardly as a thin film along the wall 12, treated liquid product being collected in a gutter 29 at the lower end of the rotor body. A scoop pipe 31 connected to an outlet 32 removes heat treated liquid from the gutter 29. Vapour given off during heat treatment of the liquid is condensed by means of a cooler 33 in the form of a helically wound pipe. Condensate is collected at the bottom of the casing 1 in a trough 36 having an outlet 37. Vacuum is applied to the casing 1 via a conduit 40 connected to a vacuum pump. In an alternative embodiment (Fig. 2 not' shown) the frusto-conical rotor body is disposed with its apex pointing downwardly, the heat treated liquid in this case flowing upwardly along the inner wall (12) by centrifugal action. The heating fluid may be a vapour. The heat exchange surface (12) can be cleaned at the end of the treatment by introducing a washing and flushing liquid through the inlet (26).
Patent GB-1412386-A (GB)
Title: Portable telephone system having a battery saver feature
IPC: H04W52/02
Filed: 1974-01-17
Abstract: 1412386 Radio signalling MOTOROLA Inc 17 Jan 1974 [29 March 1973] 2161/74 Heading H4L In a radio communication system, a portable transmitter-receiver operates on different carrier frequencies in each direction to provide duplex speech communication via a base station which may be linked to a telephone exchange, the portable transmitter-receiver includes a detector coupled to the microphone circuit of the transmitter which renders said transmitter operative only in the presence of speech (or a calling signal) and at the base station the base station receiver is muted in the absence of received signals. The arrangement provides battery saving at the portable station. As described, the radio link uses frequency modulation. A plurality of push-buttons control corresponding oscillators to provide the calling signal.
Patent GB-759133-A (GB)
Title: Thread pack, and method of and means for preparing the same
IPC: B65H54/78
Filed: 1952-01-28
Abstract: 759,133. Winding thread; thread packages. BUDDECKE, H. Jan. 28, 1952, No. 2221/52. Classes 120 (2) and 120 (3). [Also in Group XVII] A thread package comprises a series of flat helically-wound layers of thread with separating leaves between each layer, adjacent convolutions of each layer overlapping. A thread pack comprises a series of layers 4 of flattened helically-wound thread or rope with adjacent convolutions overlapping, the threads being supported at opposite ends by two separating strips 5, successive layers and separating strips being positioned at right-angles, or at another angle, to one another with the ends of the superimposed strips 5 secured to one another at the corners of the pack. Distance strips 9, Fig. 5a, may be inserted alongside the ends of the thread layer under the outer edge of the separating strips 5. The pack, which is mounted on a baseplate, may have a transparent cover with a hole in the centre placed on top and be enclosed at the bottom and sides by a wrapper glued thereto. The pack may be enclosed in a box. The base of the pack may have retaining means, such as a drawing pin, secured thereto. The pack or its casing may be provided with a thread cutter. In an alternative arrangement, Fig. 9, the threads of all the layers are parallel and are held at one end only, by a separating leaf 21 folded zig-zag fashion. Apparatus for forming the pack includes a bobbin 32 and guides 33, 34 carried by a disc 35 rotated about a fixed member 37 in which are mounted the prongs 39 of a coiling mandrel, the guide 34 or the mandrel being moved axially during winding. Each prong 39 comprises two sector-sectioned segments 41, 42 which are moved longitudinally relative to one another, to cause the convolutions to overlap, while at the same time moving towards one another about their outer, contacting, edges so that the circumferential length of the convolutions remains unchanged. After the windings have been overlapped a table 45 is moved up to mandrel and a tongue 47 moved' on to the layer of wound thread. The segments 41, 42 of one or both prongs are then moved further towards each other about the contacting edge to loosen the layer and the mandrel is withdrawn. Separating strips 48 cut from a roll 49 are picked up by suction means 50 and pressed by a member 52, which may be cooled over opposite ends of the layer. The tongue 47 is withdrawn and an outer presser member 53, which may be heated, then moves down to press the outer parts of the strips, to the undersides of which an adhesive has been applied. The table 45 is then turned 90 degrees about its vertical axis and a further layer and strips placed on top. After the requisite number of layers has been built up the completed pack 60 is ejected along a guideway 61. A base frame 57 to start the pack is fed over a guide 59 to the table 45.
Patent GB-1107723-A (GB)
Title: Improvements in or relating to yarn guiding means
Inventor: SCRAGG FREDERICK
IPC: B65H57/00
Filed: 1964-01-18
Abstract: 1,107,723. Yarn-guiding device. ERNEST SCRAGG & SONS Ltd. 13 April, 1965 [18 Jan., 1964], No. 2310/64. Heading DID. A yarn-guiding device comprises a body around which the yarn is to be guided provided with a slot to receive the yarn and from which air or other fluid can issue to support the yarn clear of the walls of the slot. The device shown guides two yarns in slots 12. Each. slot is formed between a member 21 and a member 23 each member being of circular cross-section, and comprises surfaces 16, 17 inclined at e.g. 20‹-30‹ to one another, and parallel surfaces 14, 15. The spacing of the parallel surfaces is adjustable to suit yarns of differing diameters; to this end the members 23 are received on threaded lateral extensions of the member 21 and are locked in adjusted positions by nuts 25. To support the yarns, air under pressure, or wet or dry steam, is passed through a threaded connector 29 to a duct 28 in the member 21, which communicates with the slots through passages 27 and 19. The latter are constituted by recesses each of a depth less than the diameter of the yarn and extending over an arc of 90‹ in the member 21. When the air &c. is cut off at 29 each yarn rests on a surface 18 at the base of the corresponding slot; when air &c. is admitted, the yarn is supported without friction and without change of tension or twist.
Patent GB-1080963-A (GB)
Title: Shelves and fixing devices suitable for the erection of shelves
IPC: A47B57/06
Filed: 1965-01-19
Abstract: 1,080,963. Shelves. J. A. LYONS. Jan. 14, 1966 [Jan. 19, 1965], No. 2346/65. Heading A4B. A shelf 40 is jammed between a pair of abutments, such as the walls of an alcove, by a screw device which includes a shelfsupporting platform 4, having a lipped bridge piece 6 and a depending support 5 having a threaded aperture engaged by a threaded rod 10 provided with an abutment-engaging head 13. The rod 10 has a blind bore 16 (Fig. 2, not shown) rotatably receiving a stem 15 integral with the head 13. A screw device may be provided at each end of the shelf to provide a pivoted shelf and in modifications a nut is mounted on the rod 10 to abut the support 5 which has an aperture of greater diameter than the rod, or the rod is fixed to the support 5 and a sleeve screwthreaded on the rod projects beyond the end thereof into engagement with the rear face of the head 13.
Patent GB-1196599-A (GB)
Title: Polyacrylonitrile and carbon fibre production
Inventor: FURNESS VERA ISABELLA
IPC: D01F6/18
Filed: 1966-11-24
Abstract: 1,196,599. Polyacrylonitrile filaments. COURTAULDS Ltd. 23 Nov., 1967 [24 Nov., 1966; 14 Dec., 1966; 17 Jan., 1967], Nos. 52634/66, 55988/66 and 2371/67. Heading BSB. [Also in Division C1] Polyacrylonitrile fibres of improved tenacity are made by spinning a solution of polyacrylonitrile in an aqueous solution of an inorganic salt into a spin bath containing water or a more dilute solution of that inorganic salt, passing the resultant tow into at least one pre-heating bath containing heated water or a heated aqueous solution wherein the tow is stretched, and further stretching the tow in steam by from 6 to 24 times. Acrylonitrile homo-polymers or copolymers containing at least 80% by weight of acrylonitrile units may be used, e.g. copolymers with such other monomers as styrene, methylacrylate, itaconic acid, methallyl sulphonic acid and its salts, vinyl acetate and vinyl pyridine. Suitable spinning solvents include aqueous solutions of alkali metal and alkaline earth metal halides and of the halides of certain other metals, but the preferred solvent is an aqueous solution of an alkali metal thiocyanate especially sodium thiocyanate. After spinning, the tow may be stretched either in one preheating bath at a temperature of 10‹ to 80‹ C., or in at least two preheating baths the first of which is at a temperature of 10‹ to 80‹ C. and the second of which and any subsequent bath are at a higher temperature within the range from 40‹ to 90‹ C. The tow in the or each preheating bath is suitably stretched by up to 4 times. Such preheating bath may contain e.g. 1 to 10% by weight of sodium thiocyanate. The tow is then stretched in steam, by up to 16 times, or preferably in a mixture of steam and hot air (thus enabling temperatures greater than 100‹ C. to be employed), suitably from 1À5 to 12 times, the amount of stretch applied in the steam bath or steam and hot air bath being sufficient to bring the total stretch within the range of by from 6 to 24 times. When steam alone is used in this stretching stage the amount of stretch applied in the steam is preferably sufficient to bring the total stretch within the range from 12 to 22 times. After these treatments the fibres are washed, finished and dried in known manner. Fibres so made have a tenacity of 4 to 9 grams per denier, an extension of 20 to 30%, a crushing resistance greater than 90% and a drying contraction of from 10 to 20%. Fibres stretched in the second stage in steam alone have an initial modulus greater than 50 gpd. and a hot wet plasticity of from 10 to 20%, while those which have been stretched in a mixture of steam and hot air have initial moduli substantially greater than this, and still lower hot wet plasticities. Fibres having these properties are especially suitable for conversion into filamentary carbon. (For details, see Division Cl.)
Patent GB-811480-A (GB)
Title: Improvements in or relating to high-tension barrier layer rectification units
IPC: H01L25/03
Filed: 1957-01-23
Abstract: 811,480. Plate rectifier assemblies. SIEMENS-REINIGER-WERKE A.G. Jan. 23, 1957 [Jan. 23, 1956; Dec. 21, 1956], No. 2460/57. Class 37. A number of stacks of plate rectifiers are placed together with their first ends adjacent and their second ends adjacent and are connected such that the first end of one stack is in electrical contact with second end of the next stack and so on. Fig. 2 shows stacks of the type containing rectifying plates 7 inside insulated casings 4, 5 and 6 and sealed off by contact bodies 11-16. The cross-sections are rectangular and plates are pressed together by springs 8, 9 and 10. Contact strips 17 and 18 are placed between the stacks but separated from the stack by insulating plates 19, 20, 21 and 22. Contact springs 23-26 effect good contact between the bodies 11-16 and the strips 17 and 18. Contact bodies 11 and 16 are provided with protruding connections 27 and 28. An arrangement is shown in Fig. 3 whereby the insulating strips 19-22 are replaced by two insulating strips 29 and 30 and the contact strips 17 and 18 are passed half-way along one side of the insulating strips through holes 31 and 32 and then the rest of the way along the other sides of the insulating strips. The stacks may also be laid side by side as in Fig. 4 and the connections may be made by stiff wires 33 which are raised and do not touch the insulating bodies 4, 5, 6 except at specified contact points. A further example (Figs. 5, 6 and 7, not shown) is a device comprising a group of stacks similar to an arrangement shown in Figs. 3, 4 and 5 of Specification 811,479.
Patent GB-1028525-A (GB)
Title: A heater for a gaseous medium comprising pipe coils providing a convection zone and a radiation zone
IPC: F22B21/40
Filed: 1964-01-21
Abstract: 1,028,525. Gas heaters. INDUSTRIECOMPANIE KLEINEWEFERS KONSTRUKTIONS - UND HANDELS GESELLSCHAFT. Jan. 21, 1964 [March 15, 1963], No. 2557/64. Heading F4S. A heater for heating gaseous media comprises a radiation zone and a connection zone. The medium that is to be heated travels through helical pipe coils, in the connection zone (A) in countercurrent to, and in the radiation zone (B) in cocurrent with a heating gas which flows axially through the heater as shown by arrow P, P<SP>1</SP>. The heating gas may be introduced through the floor of the heater or, as shown, may be generated by a burner 8. The pipe coils of both zones A and B are formed by a plurality of separate helical pipe coils through which the heated medium is conducted in parallel. The several pipe coils 14 of the connection zone connect with two annular distributers 11, 12 which are fed from the inlet pipe 10. Said pipe coils also connect by means of vertical pipes 16<SP>1</SP>. 16<SP>11</SP> with a dewatering chamber 17 (optional), provided with a draining valve 18. The pipe coils 20 of the radiation zone are brought out at equally spaced intervals from the chamber 17 and are stacked in a selfsupporting manner between the two vertical sets of pipes 16<SP>1</SP>, 16<SP>11</SP>, the upper ends 21 of pipe coils 20 connecting with a collecting cylinder 22 which is connected to an outlet pipe 23, 24 extending through a displacement body 15.
Patent GB-555587-A (GB)
Title: Improvements in or relating to the heat treatment of metals
IPC: C21D1/76
Filed: 1942-02-26
Abstract: 555,587. Heat treating metals. GREY, J. A., and ELLIS, E. H. Feb. 26, 1942, No. 2558. [Class 51 (ii)] A method of heat treating metals in a closed muffle furnace comprises passing carbon dioxide through a layer of carbon on the bottom of the muffle heated to a temperature sufficient both for the heat treatment and for carbon to react with carbon dioxide, the carbon dioxide employed being approximately equal to that required to form sufficient carbon monoxide to burn the oxygen in the muffle. The carbon dioxide may be introduced beneath the carbon from outside the muffle or generated from a layer of magnesium or calcium carbonate beneath the layer of carbon. Catalytic reagents may be used to accelerate the reaction between the carbon monoxide, and the oxygen in the muffle. Catalytic reagents such as mixtures of manganese dioxide with copper oxide or potassium permanganate or substances such as mercuric chromate or chromic acid or mixtures of these may be employed.
Patent GB-860469-A (GB)
Title: Improvements in or relating to dip-brazed heat exchange apparatus
Inventor: CLEWS KENNETH JAMES
IPC: C22C21/10
Filed: 1958-01-27
Abstract: A dip-brazed heat exchange apparatus is formed from an alloy comprising by weight:-  .Zn.4.5-5.5% .Mg.0.75-1.25% .Cu.0-0.5% .Mn.0-0.7% .Si.0-0.2% .Fe.0-0.25% .Ti.0-0.2% .Cr.0-0.2% Al remainder, except for ununavoidable impurities
Patent GB-719204-A (GB)
Title: Improvements in or relating to circular, independent needle, knitting machines
IPC: D04B35/10
Filed: 1953-01-30
Abstract: 719,204. Knitting-machines. HEMPHILL CO. Jan. 30, 1953 [Jan. 31, 1952], No. 2743/53. Class 74 (2). A stop-motion for a circular machine comprises a feeler 1 adapted to be positioned adjacent the needles and mounted on a retractable mounting 2 so as to be removable from its operative position. A switch 3 which controls energization of a solenoid 4 controlling the driving mechanism of the machine is also mounted on the mounting 2 and is maintained closed by a portion 12 of the feeler 1 engaging it. When the feeler is in its operative position and is engaged by a broken needle or accumulation of yarn on a needle, it is deflected so that a projection 7 at its end disengages a stud 8 and the feeler is withdrawn under the action of a spring 6 so that the switch 3 is broken and the machine stopped.
Patent GB-1033652-A (GB)
Title: Improvements relating to electrical control apparatus or control and indication apparatus
Inventor: BANGA JULIUS
IPC: F23N5/08
Filed: 1963-01-22
Abstract: 1,033,652. Automatic temperature control. ELECTROFLO METERS CO. Ltd. Oct. 13, 1963 [Jan. 22, 1963], No. 2749/63. Heading G3R. [Also in Division G1] An electrical control signal is derived by apparatus comprising a light obturator connected to an instrument responding to a variable and arranged to interrupt partially or completely a beam of light between a light source and a photocell, and a further photo-cell which is permanently illuminated from the same light source, the said cells being connected electrically in a bridge circuit including a variable, bridge-balancing, resistor. A vane 3 responsive to the temperature of a furnance varies the light intensity on a photoresistor 1. Photoresistor 1 is in a bridge circuit with a photoresistor 5 and the resistor 8 is adjusted until the bridge is balanced with 2/3 of cell 1 covered by obturator 3. The bridge resistors 6, 7 and 8 are of about 500 ohms each so that the resistance in the preset arms of the bridge is approximately equal to resistance of cell 1 fully illuminated. The bridge is fed by A.C. and the output at transformer 10 has an amplitude proportional to deviation from the control point and its phase indicates the sense of the deviation. The output is fed to a phase sensitive rectifier, the output of which is compared with a signal indicating the position of a fuel valve and any difference is used to control the fuel valve. A resistor 11 of resistance intermediate the illuminated and unilluminated values of cell 5 ensures that if lamp 2 fails, the fuel valve will tend to be closed.
Patent GB-510333-A (GB)
Title: Apparatus for playing a game
IPC: A63F7/24
Filed: 1938-01-29
Abstract: 510,333. Table games. WALLACE, W. F., PRITCHARD, H. A., and PRITCHARD, J. A. Jan. 29, 1938, No. 2850. [Class 132 (ii)] Apparatus for playing a table ball or like game comprises a bat or club 4 pivotally mounted in the end of a handle 1 and adapted to be actuated by a knob 7 and flexible shaft 6 or by a rigid shaft and universal coupling. The striker or club head may be detachably secured by means of a tongue and slot, bayonet joint or the like to the spindle or a member attached thereto. The spindle may also be detachably coupled to the shaft 6. The table may simulate a golf course or playing field and have roughened surfaces and hazards. Where holes are provided, a false bottom adapted to be raised by a lever &c. to eject the ball is provided and formed with a curved or inclined surface so that the ball will roll off. The movable mechanism may be weighted or otherwise damped to lessen the force of impact.
Patent GB-870142-A (GB)
Title: Improvements in or relating to photographic cameras
IPC: G03B7/085
Filed: 1957-09-16
Abstract: 870,142. Photo-electric exposure control. BELL & HOWELL CO. Sept. 16, 1957 [Aug. 13, 1957], No. 2877/60. Divided out of 870,139. Class 40(3) [Also in Group XX] A photographic camera includes the combination comprising a viewfinder, an adjustable diaphragm for varying the exposure of the camera, a photo-electric cell, a galvanometer having a pivoted spring biased circuit coil connected in circuit with said cell, means directly coupling said coil to said diaphragm whereby the diaphragm is adjusted by movement of said coil to decrease and increase the diaphragm aperture respectively with increase and decrease in light impinging on said cell, means generally laterally spaced from said viewfinder providing a tortuous light transmitting path from the exterior of said camera rearwardly to said viewfinder, and a light modifying member laterally spaced from said viewfinder connected for movement in response to movement of said diaphragm into and out of a position intercepting the transmission of light through said light transmitting means in response to movement of said diaphragm into and out of its maximum aperture position. As shown, said tortuous light path to the viewfinder 72 is provided by a "light pipe" 73 consisting preferably of a solid plastic material with suitably inclined internal reflecting surfaces 84 and 83 and a tinted rear surface 82. A light blocking member 85 is carried by an arm 64 mounted for rotation with the galvanometer coil 20 of an automatic diaphragm actuating mechanism as described in Specification 870,139, has a forwardly extending portion 65 visible through transparent hood 67 for indicating the diaphragm setting against a scale marked on the said hood, and in its end position corresponding to maximum diaphragm aperture obstructs light from entering opening 76 of the "light pipe" 73, thereby indicating in the viewfinder 72 that the ambient light is insufficient for proper exposure. Arm 64 and the diaphragm mechanism coupled thereto may alternatively be manually actuated by means described in Specification 870,141. Specification 870,140 also is referred to.
Patent GB-639433-A (GB)
Title: Improved flow control device for oil wells and other sources of fluid under pressure
IPC: E21B34/02
Filed: 1948-01-30
Abstract: 639,433. Borehole apparatus. MERCER, R. (Cameron Iron Works). Jan. 30, 1948, No. 2895. [Class 85] [Also in Group XXIX] A flow control device for oil wells comprising a casing with an inlet and an outlet for the fluid and containing a removable choke, a valve which, when closed on its seat, seals off the choke from the fluid pressure, and a removable retainer for holding the choke in place, is characterized by the valve, when open, preventing the removal of the retainer and choke from the casing. In an embodiment, a casing is provided with an inlet 2 and an outlet 3, the latter constituting a separate member screwed into the casing so as to hold a valve seating member 7 up against a shoulder in the casing. The valve 19 is a tubular member provided with a hexagonal surface 22 by which it can be screwed down on to the seat 7, and the contacting surfaces of the valve and seat are faced with wear-resisting material. Positioned inside the valve and screwed into the outlet 3 is a retainer 25 serving to hold a flow bean 31 in position, the latter being held between shoulders on the member 25 and outlet 3. The fluid flows into the interior of the member 25 through apertures 36 and its flow into the bean 31 is further controlled bv a needle valve 35 screwing into the member 25. The position occupied by the needle valve is shown by means of a groove 41 on its stem co-operating with a scale 40 on a tube 38 surrounding the stem. In a modification, the needle valve is omitted, and any pressure existing in the outlet after the valve 19 has been closed down is relieved through a drain valve member screwed into the upper end of member 25.