baber/WOPTO huggingface dataset:
Patent GB-501071-A (GB)
Title: Improvements in the manufacture of butadiene
IPC: C07C5/44
Filed: 1937-09-01
Abstract: 501,071. Butadiene. JOHNSON, G. W. (I. G. Farbenindustrie Akt.-Ges.) Sept. 1, 1937, No. 23938. [Class 2 (iii)] Butadiene is prepared by bringing into contact one molecular proportion of butene with at most one molecular proportion of chlorine at above 500‹ C. in the presence of a solid catalyst capable of splitting off hydrogen chloride, e.g. active charcoal, silica gel, chamotte, polyvalent metal oxides such as magnesium oxide or titanium dioxide, and polyvalent metal halides such as calcium or barium chloride if desired on carriers. n Or iso-butenes or mixtures thereof may be used, obtained, for example, by dehydrating alcohols formed by treating butanebutene mixtures with sulphuric acid, if desired after removing isobutene by polymerization. The speed of flow of the reacting is preferably high, and may be increased by reduction of pressure or admixture of diluents such as nitrogen or steam. Reaction may be effected up to about 700‹ C. using a porous tube arranged in an outer tube of, e.g., quartz, the interspace being filled with the catalyst. One reactant is passed through each tube, the resulting mixture of butadiene and hydrogen chloride being cooled rapidly and washed to remove the latter. The butadiene may be purified by passage over lime before polymerizing to rubber. In an example, silica gel at 650‹ C. is used as catalyst, pressure being about 17 mm. The amount of chlorine may be less than the theoretical, the unconverted butene being separated and recycled.
Patent GB-804927-A (GB)
Title: Improvements relating to thread-control arrangements for sewing machines
IPC: D05B51/00
Filed: 1956-08-03
Abstract: 804,927. Sewing machines. PHOENIX NAHMASCHINEN AKTIENGESELLSCHAFT BAER & REMPEL. Aug. 3, 1956 [Aug. 10, 1955], No. 24034/56. Class 112 A rotary thread-control arrangement disposed on the head of a sewing machine and directly driven by the arm shaft thereof comprises two thread-controlling rotary members 13, 15 spaced at a distance axially with respect to the shaft and having respective thread-receiving control notches 20, respective thread-yielding control edges 18 which extend at the same distance apart and between which the thread extends substantially parallel to the axis of rotation, and respective thread-deflecting edges 21, 22 which, from the distance apart of the said control edges, are directed at an angle towards a thread-catching notch 24. The disc-like members 13, 15 are spaced apart by a block 16, disc 13 being spaced from a disc 10 by a block 14, and the discs being secured together by screws 17, and disc 10 being secured, in an angularly adjustable manner, to the end of the arm shaft. The aligned control edges 18 slope radially outward to end in projections 19, the inner ends of said edges being defined by shoulders 26. The discs rotate anticlockwise. From the position shown in Fig. 2, the thread travels outwardly along the edges 18 while it is being paid out to the needle, and is retained by the projections 19 until the aligned notches 20 engage the needle end of the thread, whereby continued rotation serves to draw the thread upwardly for setting the stitch. The thread then slides along the edges 21, 22, which are provided on discs 13 and 15 respectively and which extend from the notches 20 towards the notch 24 situated at the outer end of edge 21. The thread is temporarily retained by notch 24, while a guide finger 23 on disc 15 simultaneously guides the thread on the needle side of the device into engagement with the shoulders 26, to complete the cycle and to prevent the thread from winding around spacer 16, the thread at this phase being neither taken up nor given out. A cutter blade 29, mounted on disc 10 is provided for severing the thread in the event of the latter becoming slack. The amount of thread take-up can be varied by using spacers 16 of different thicknesses. A hinged cover 30 is provided for the mechanism.
Patent GB-713925-A (GB)
Title: Potato chip construction
IPC: A23L19/18
Filed: 1952-09-25
Abstract: 713,925. Potato crisps. STAHMER, B. Sept. 25, 1952, No. 24063/52. Class 49 A potato crisp, (Figs. 1, 2, 3 and 4) has alternate wide - base ridges 10 and furrows 12 extending across one face in parallel arcs and alternate wide - base ridges 14 and furrows 16 extending across the other face in parallel arcs, and the furrows on opposite faces intersect each other laterally to form perforations 18, preferably circular.
Patent GB-1127352-A (GB)
Title: Computing machine
Inventor: CROWTHER GERALD OFFLEY
IPC: G06F7/48
Filed: 1966-05-31
Abstract: 1,127,352. Electronic calculators. MULLARD Ltd. 31 May, 1966, No. 24221/66. Heading G4A. A computing machine has a number of registers each comprising a chain of digit storing cold-cathode decade stepping tube stages, one stage at the end of each chain storing a digit indicating the position of the decimal point in the corresponding stored number. In the embodiment described the machine has an input register and two output registers, the decimal point stage of the former being stepped by a control circuit which supplies a pulse from a cold cathode tube (V5, Fig. 2, not shown) via OR gate (OG4) to the decimal point stage each time a digit key is pressed to insert a number into the input register. When the decimal point position is to be recorded in this register an inhibit signal from a key DP inhibits the V5 pulses while the remaining digits of the number are recorded in the input register. Two further control circuits, Input and Output Control, are also provided to control decimal point positioning during Add, Subtract, Multiply and division operations, these circuits each comprising a ring counter of twelve cold cathode trigger tubes, the particular tube ignited determining the decimal point position of the number in the register at present controlled by the corresponding circuit. During an addition or subtraction between a number in an accumulator register and the input register, the Input and Output counters store the decimal point positions of the two numbers, and operate gates to ensure that the correct digits of the two numbers are added. During a multiplication operation the two decimal point digits of the input and accumulator registers are added by the decimal point control circuit to register a digit position corresponding to the product number, whilst during a division process, the decimal point digit of the dividend is added to the " nines " complement of the decimal point digit of the divisor and " tens " in the sum ignored, whereby the decimal point digit indicates the position of the decimal point in the quotient. The machine also incorporates reset circuits for zeroizing the registers and their corresponding decimal point stages.
Patent GB-1502427-A (GB)
Title: Nuclear reactor coolant channels
IPC: G21C3/34
Filed: 1974-06-03
Abstract: 1502427 Cooling nuclear reactors; fuel assemblies UNITED KINGDOM ATOMIC ENERGY AUTHORITY 23 May 1975 [3 June 1974] 24424/74 Heading G6C  A nuclear reactor coolant channel comprises a plurality of elongate, heat emitting nuclear fuel rods supported in parallel relation in concentric rows, there being an odd number of rods occupying the outermost row. The fuel rods may be supported within a pressure tube or the shroud of a fuel rod bundle assembly. The arrangement is said to provide for asymmetrical coolant flow patterns, eliminating the possibility of oscillation of coolant between alternative flow paths over the rods. Improved heat transmission from the rods to a liquid coolant passing through the channel is thereby achieved. The rods may be arranged in concentric circles (Figs. 2, 6 and 8, not shown) or in a concentric arrangement in a polygonal sided (especially triangular) flow channel (Fig. 7, not shown). A nuclear fuel rod assembly constructed as above may include fuel rods disposed about one or more central sparge pipes for supply of auxiliary coolant to the assembly.
Patent GB-776965-A (GB)
Title: Insulating arrangement for attachment to line supports for electric overhead lines
IPC: H01B17/16
Filed: 1955-08-25
Abstract: 776,965. Insulators. ROSENTHAL -ISOLATOREN GES. Aug. 25, 1955 [Sept. 1, 1954], No. 24445/55. Class 36. The pin 3 of a pintype insulator 1 carries a metal mounting plate 7 on which the lowest petticoat 6 of the insulator rests and the upper end 15 of the pin is level with the centre line a-a of another petticoat 9. The pin passes through a central aperture in the plate and may be welded or screwed thereto. Alternatively, the pin may be formed with a shoulder or conicallyshaped portion on which the plate rests.
Patent GB-1067224-A (GB)
Title: Improvements in or relating to electrostatic coating methods and apparatus
IPC: B05B5/04
Filed: 1964-06-12
Abstract: Electrostatic spray-coating appratus includes means for directing air with entrained coating powder on to and along an insulating surface which is moved to discharge the powder into an electrostatic field maintained between the article to be coated and a position adjacent to the insulating surface.  An electrostatic spray coating gun (Fig. 4a, not shown) comprises a rotatable tube (39) through which air with entrained powder coating material may be delivered to a nozzle having apertures (53) and thereby to the insulating surface (59) of a rotating bell member (58), from the outer edge (59a) of which the powder is discharged into an electrostatic field which is maintained between a conductor (61) on the outer surface of the bell and the article to be coated.  An air motor (31), (Fig. 2, not shown) mounted in the body of the gun rotates the tube (39) through a gear connection (44, 43) and the tube (39) is provided with a mechanical seal connection (47) to the powder and air supply tube (46) having ceramic and carbon rubbing faces.  A high-voltage lead (17a) makes contact with the conductor 61 to maintain it at high potential with respect to the article to be coated.  Powder is supplied from a fluidised bed by means of an air injector device (Fig. 5 not shown) which is immersed in the bed.  The gun may be provided with an earthed handle for use as a portable appliance (Fig. 3 not shown) or may be mounted on a stand for coating a succession of articles suspended from an earthed conveyor (Fig. 1 not shown).  In a modified form the nozzle cap and hub on which the bell is supported are of conducting material and are maintained at high potential (Fig. 4b not shown). Reference is made to the coating of steel wires with vinyl plastics material and to the coating of steel sheets with epoxy resins.  The articles to be coated may be heated before or after spraying to effect coalescence and, if necessary, cure of the coating material.  Pre-heating is also referred to as allowing the deposition of thicker coatings.
Patent GB-472089-A (GB)
Title: Improvements in or relating to smoke bombs or projectiles
IPC: F42B12/48
Filed: 1936-09-10
Abstract: Chromyl chloride is produced in a smoke bomb by reaction of calcium dichromate, fuming sulphuric acid and common salt, or of ammonium dichromate and chlorosulphonic acid.
Patent GB-1343153-A (GB)
Title: Information handling apparatus
IPC: G11B20/14
Filed: 1971-04-19
Abstract: 1343153 Data storage HONEYWELL INFORMATION SYSTEMS Inc 19 April 1971 [27 April 1970] 24715/71 Heading G4C Binary digital data is recorded using a ternary representation and a read/write system therefor is described. The data is recorded in octal cells of three bits, each cell having four possible transition points, there being transitions at two or more of these (Fig. 1). The data is read from a recording medium (e.g. magnetic or thermoplastic tapes, magnetic discs or drums, cores or thin films, punched cards, documents bearing magnetic ink imprints, optically recognizable imprints, machine or hand recorded marks) and appears as an analog electrical signal (Fig. 3, not shown). The signal passes to a delay line 160 where it is sampled at the four transition points. The sampled signals are passed simultaneously to a correlation network 166 where the sampled waveforms are multiplied respectively by weighting factors - 1, + 1, - 1, + 1 and the products summed to give a correlation sum. Each cell bit configuration will give a different correlation sum (Figure 1). The sum is then passed to quantisers 90-97 (e.g. Schmidt triggers), each quantiser compares it with a different sum range (e.g. from +2 to +3 &c.), and the quantizer within whose range the sum lies signals an encoding matrix 100 (Fig. 8, not shown) which produces the three corresponding bits for the cell. The apparatus is stated to reduce errors from interference signals. A device for converting three bits to a ternary code for writing is also described (Fig. 6, not shown).
Patent GB-1065344-A (GB)
Title: Improvements in resilient couplings
IPC: F16D3/76
Filed: 1963-06-21
Abstract: 1,065,344. Flexible couplings. L. G. DAVIES. June 8, 1964 [June 21, 1963], No. 24765/63. Heading F2U. A hub member 4 is connected to a shaft 3 by the frictional force of a series of circular or elliptical section resilient rings 6 compressed axially between flanged end collars 7 drawn together by axial bolts 8. The collars are a close fit in the ends of the hub bore to trap the air between the individual rings, or these spaces may be filled with lubricating and protective liquid, end sealing washers being fitted in this case.
Patent GB-732905-A (GB)
Title: Improvements in and relating to heating units for use in space heating installations
IPC: F24C7/06
Filed: 1951-10-23
Abstract: 732,905. Electric heating panels. OAKLEY, J. L. D. (Dole Refrigerating Co.). Sept. 26, 1952 [Oct. 23, 1951; March 20, 1952], Nos. 24773/51 and 7241/52. Class 39 (3). [Also in Group XIII] In a heating unit, two metal walls 1, 2 sealed around their edges form a hollow plate containing a heat conductive substance 15 and having a valve for the maintenance of a sub-atmospheric pressure within the plate, one or more electric resistances 9, with an electrically insulating jacket 10, being in heat exchange contact with at least one wall. The units may be nested in walls, ceilings or floors, e.g. as a skirting board, or be located in ducts or as part of ducts for heating air for heating a room. The heat conductive material may be a liquid or eutectic mixture, such as Wood's metal, Safalloy or Lipowitz alloy, which melts when heated in the plate, or may be paraffin wax, acetaldehyde, cresol, cyclohexane, phenyl-cyclohexane, silico-iodoform, ethylene diamine, nitrostyrene or undecyl alcohol. Each heater 9, 10 is contained in a tube 8 which passes through openings in the edge 4. The units may be finned or one wall corrugated., Fig. 13. Fins may be provided by securing, individually, angle-section strips 32 by bolting or welding the ends to the units as in Fig. 8 or by securing a grating formed by attaching strips 32 to end strips 34a, Fig. 11. The main portion of each strip 32 is curved, Fig. 9, so that, when the ends are secured, the strip is maintained in close contact with the unit surface. The units are thermostatically-controlled individually or in groups and are connected in series, parallel or both. The Provisional Specifications describe also the units having walls of curved and other shapes and used as hot plates. They may be heated by steam or hot water tubes so that the heat conductive substance vaporizes. Spacing elements may separate heating wires and keep them from contact with the walls. According to the first Provisional Specification, the units may stand on feet and be horizontal and contain pentadecane. According to the second Provisional Specification, the tubes may be rectangular in cross-section and the units may contain oil.
Patent GB-317377-A (GB)
Title: Improvements in fuel feeding devices for internal combustion engines
IPC: F02M57/02
Filed: 1929-08-14
Abstract: 317,377. Minola, A. Aug. 14, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Pumps, regulating delivery by opening byepasses.-Fuel is supplied to a valve-controlled injector 12 by a pump 3 provided with inlet and delivery valves 2, 4, the fuel delivery being controlled by a bye-pass valve 6 situated between the pump delivery valve 4 and the injector. The valve 6 is opened, to terminate the delivery of fuel, by a projection 10 on the cam-operated lever 8 actuating the fuel pump, the time at which the valve is opened being varied by displacing the fulcrum 9 of the lever 8 either manually or by a controlling device.
Patent GB-1188931-A (GB)
Title: Printing Machine for Cylindrical Bodies.
Inventor: O'CONNELL ANTHONY JAMES
IPC: B41F17/22
Filed: 1966-06-03
Abstract: 1,188,931. Printing curved surfaces. IMPERIAL CHEMICAL INDUSTRIES Ltd. 4 Sept., 1967 [3 June, 1966], No. 24853/66. Heading B6C. An apparatus for marking the curved surface of a cylindrical, conical, or frusto-conical body comprises transfer means to simultaneously rotate the body about its longitudinal axis and continuously feed the body through the apparatus in a plane substantially at right angles to the axis, the transfer means being linked with a sensing means, e.g. photo-electric cell or mechanical cam, which co-operates with a marking means to register a marking on the curved body at the desired position. The apparatus marks a series of the bodies and the path of the rotating bodies may describe an arc of a circle. The marking means may comprise rotating cylinders and the rotation of each body may be effected by rolling the body along a curved upright wall.
Patent GB-745472-A (GB)
Title: Process of water-washing or comminuting explosive organic nitro-compounds
IPC: C06B21/00
Filed: 1953-09-08
Abstract: Crystalline, molten, or liquid explosive organic nitro-compounds, e.g. cyclo-trimethylene trinitramine, trinitrotoluene, or nitroglycerine, are washed and stabilized, or crystalline nitro compounds, are comminuted, by forming the compound into a slurry or dispersion in water and forcing the slurry or dispersion through one or more injectors operated by steam or by hot or cold water under pressure.  After each passage through an injector the water may be separated, e.g. by cyclone, and renewed.
Patent GB-1057993-A (GB)
Title: Improvement in tractor mounted implements
IPC: A01B21/08
Filed: 1965-06-11
Abstract: 1,057,993. Agricultural implements. KVERNELANDS FABRIKK A.S. June 11, 1965 [June 12, 1964], No. 24890/65. Heading A1B. A disc harrow is provided with two pivoted sections 3, 4 which are raised and lowered by means of a hydraulic cylinder 5. The sections 3, 4 are provided with feet 11, 12 for parking which are so arranged that the weight of the sections causes them to swing inwards when the harrow is parked so that the supply to the cylinder may be disconnected.
Patent GB-349853-A (GB)
Title: Method of and means for synchronising electric remote indicating systems
IPC: G08B25/00
Filed: 1930-08-21
Abstract: 349,853. Electric signalling systems. GES. FUR ELEKTRISCHE APPARATE, Marienfelde, Berlin. Aug. 21, 1930, No. 25059. Convention date, Aug. 22, 1929. [Class 40 (i).] In a remote indicating system, the transmitter and receiver may be synchronized whilst readings are being taken, the synchronizing being effected by the transmission of impulses of the same type as those used for transmitting readings. By means of the wheel 1, which may be replaced by an automatic drive, the transmitter indicator 3 is moved to a position representing the reading required. This movement is repeated, through differential gear 7, to either shaft 10 or 10<1>, depending on the direction of rotation of 1. If the hand-wheel 1 is moved in a clockwise direction, shaft 10 rotates moving wiper 13 over contacts 16. As each contact is reached 23 pulls up and magnet 27 energizes, stepping forward the shaft 31, the movement being communicated to pointer 39 through differential gear 34. If the movement of 1 is anticlockwise, magnet 271 responds and pointer 39 is moved in the reverse direction. To synchronize the system hand-wheel 41 is moved until pointer 44 coincides with 45. Shafts 10 and 10<1> now move as a solid shaft sending a similar number of impulses to 27 and 27<1>. Shafts 31 and 31<1> are thus driven at the same rate and indicator 39 is not affected. When 44 and 45 coincide, wiper 14 is vertically down and then contacts 25 change over allowing interrupter 46 to send a train of impulses to 27. This train drives shaft 31 only setting wiper 21 and pointer 39. When 21 is vertically downwards resistance 48 enters the circuit of 23 and this relay relapses preventing further movement. Handle 41<1> is now turned until 44<1> and 45<1> coincide in which position 141 is vertically downwards and 251 changes over to enable 21<1> to take up a vertically down position. The angle between 14 and 14<1> is now equal to that between 21 and 21<1> and therefore 39 must coincide with the reading of 3. The synchronizing may take place automatically at definite time intervals. The magnets 27 and 27<1> may be energized from a local current source or the shafts 31 and 31<1> may be driven by coupling to a continuously rotating shaft.
Patent GB-197253-A (GB)
Title: Improvements in apparatus for automatically operating electric switches of electrically-driven pumps
IPC: G05D16/20
Filed: 1922-09-16
Abstract: 197,253. Buckley, E. W., and Mather & Platt, Ltd. Sept. 16, 1922. Controllers, actuating.-Relates to automatic controlling apparatus for electrically-driven pumps of the kind described in Specification 10597/07. The fall of a plunger d in a cylinder b due to diminution of pressure in a system of water mains q closes stator and rotor switches of an alternating current motor which drives centrifugal or other pumps until the pressure in the mains is restored. According to the invention, the cylinder lining c is pierced with a ring of holes t to allow water to escape and the plunger to move quickly during the first part of its fall. The quick motion is transmitted through a belt f, a pulley g, a spindle h, and an attached arm 9<1> to pins 9 and 10 adapted respectively to close and open the stator switch 2. After the stator switch has been closed, the remainder of the fall of the plunger takes place slowly, the continued movement of the spindle h gradually closing a water rheostat j in the rotor circuit. When fully closed, the rheostat arm is held on by a no-voltage release magnet k<1>. The device for starting the fall of the plunger comprises a diaphragm n acting against a helical spring r to keep a supporting latch s is engagement under the bottom edge of a blade spring 13, which is attached to the plunger rod e and is bent into crank form at the bottom. To keep the stator switch secure in its closed position, the actuating arm 9<1> is provided with an attachment 9<11>, the end of which backs up the closed switch blade 2.