baber/WOPTO huggingface dataset:
Patent GB-1082707-A (GB)
Title: Improvements in or relating to ice detection apparatus
Inventor: RICHARD JOSEPH DONAT
IPC: B64D15/20
Filed: 1966-07-27
Abstract: 1,082,707. Detecting ice formation electrically; detecting icing conditions. ROSEMOUNT ENGINEERING CO. July 27, 1966, No.33817/66. Headings G1N and G1X. The approach of icing conditions is detected by exposing a thermally conductive element 5, Fig. 6, to the atmosphere, generating by means of a Peltier effect heat pump a temperature gradient along the element, one end 27 thereof being maintained below the ambient temperature of the atmosphere, and detecting non-linearity of the temperature gradient due to ice formation on the sub-zero portion of the element. Thermocouples TC1, TC2 measure the temperature gradient in the colder half of the element, and thermocouples TC3, TC4, the gradient in the warmer half, any difference being measured by a differential amplifier 23 and indicated on a scale 24 calibrated in percentage ice coverage of the element. The difference signal may be used to control de-icing apparatus on an aircraft. In a non-electrical temperature measuring arrangement Fig. 16 (not shown), bores (67) in one edge of the cold half of the element communicate with a first input of a differential pressure sensitive device (71), and further bores (68) in the warmer half of the element communicate with the second input of the device (71). Icing of the colder half is detected by a measured difference in the two pressure signals. The element 5 may be arranged on the leading edge of a body 1, Figs. 1 to 5 (not shown), from which it is thermally insulated by a layer (26) one heat pump (10) being arranged to heat the lower end (28) of the element, and a second heat pump (9) being arranged to cool the upper end (27). The heat pumps (9, 10) are generally similar and are connected to the ends (27, 28) of the element 5 by heat shunts (11, 12), and to an outer casing (2, 3) exposed to the atmosphere, by heat shunts (22, 21). The element, alternatively may be U-shaped Figs. 8, 9, and Figs. 13, 14 (not shown), a single heat pump (31) being arranged to contact the ends of the U, and the thermocouples TC1-4, Figs. 8, 9 (not shown) being situated in axial bores (42) in the element. In a further embodiment Figs. 20-23 (not shown) a linear element (82) is used, and has a single heat pump (88) at one end (85), the thermal connection to the opposite end being made via an elongated heat shunt (81). The temperature gradient is measured by thermistors (91, 92) arranged in a bridge circuit R1, R2, Figs. 24, 25 (not shown) which operates a measuring device (101) or a control circuit (107), Fig. 26 (not shown).
Patent GB-634541-A (GB)
Title: Improvements in grid plates for electric accumulators of the lead-sulphuric acid type
IPC: H01M4/14
Filed: 1947-12-22
Abstract: 634,541. Batteries. AKTIEBOLAGET TUDOR. Dec. 22, 1947, No. 33839. Convention date, Dec. 21, 1946. [Class 53] The bars 2 of a lead accumulator grid are made in pairs, the slot 5 between each pair being filled with a fillet 6 of polyvinyl chloride or other non-conducting synthetic material which is shaped to embrace three sides of each bar, as shown in Fig. 4. Both the vertical and horizontal bars may be made in this way. The grid is filled with active paste 7 which is covered with glass wool or other insulating material 8 and the whole enclosed in an insulating perforated or slotted envelope 9 which may be made of polyvinyl chloride. The faces of the envelope may be corrugated, the corrugations being filled with the active material and glass wool 8. The troughs of the corrugations may be fixed to the fillets 6.
Patent GB-194785-A (GB)
Title: Improvements in devices for engaging and disengaging the screws of lathes
IPC: B23Q5/40
Filed: 1921-12-16
Abstract: 194,785. Smith, A. Dec. 16, 1921. Driving machines.-In a split-nut controller for the feed mechanism of lathes, the halves a, b of the nut are actuated by eccentrics a<1>, b<1> on a shaft k retained by a screw r in bearings p, the positions of the shaft k being determined by a spring-pressed ball coacting with recesses in a sleeve m. When the halves of the nut are fully engaged with the screw c the stops f, g come into contact and prevent further movement.
Patent GB-432677-A (GB)
Title: Improvements in or relating to apparatus for concentrating or separating gold or gold ore from pulp
IPC: B03B5/06
Filed: 1934-11-26
Abstract: 432,677. Concentrating ores. KNAPP, E. A., and BATES, W. R., 813, Salisbury House, London Wall, London. Nov. 26, 1934, No. 33963. [Class 82 (ii)] Gold or gold ore is concentrated by causing the pulp to flow down a stationary inclined table or strake which is adjustable between two limiting inclined positions in one of which it communicates with a tailings launder and in the other with a concentrates launder, the upper surface of the table or strake being covered by a detachably mounted blanket consisting of a sheet of rubber having a riffled, undulating, pitted, or other iregular surface affording grooves or recesses for the deposited particles. The upper end of the strake 1 is pivotally mounted on a shaft 2 carried by a framework comprising a base 3, uprights 4, and an inclined member 5, and the lower end can be raised or lowered by means of a hand wheel 16 acting through a worm 15, a worm wheel 14, gear wheels 10, and vertically movable racks to which are connected links 8 pivoted at their upper ends to the underside of the strake. The bottom of the strake is covered by a rubber blanket having a riffled, undulating, or other irregular surface which is preferably secured at the top by a clip, at the sides by hinged channel irons, and at the bottom by wedges driven between the blanket and a pair of lugs 20. The pulp is fed to the strake by means of a distributer 22 mounted on the member 5, the distributer being covered with a thin sheet of rubber 23 having a plurality of sets of tapering ribs 24 to effect the distribution of the pulp. After a period of concentration the flow of pulp is diverted and the strake is tilted so that its end is positioned over the launder 33, the blanket is loosened and shaken, and the concentrates washed into the launder 33 by jets of water.
Patent GB-1301159-A (GB)
Title: Improvements in or relating to deformable metallic static seals and load elements
IPC: F16J15/08
Filed: 1970-07-14
Abstract: 1301159 Joint-making packing; bellows for end face seals; valves; springs TEMPER CORP 14 July 1970 [14 July 1969] 34059/70 Headings F2B F2S and F2V [Also in Division F1] An axially-deformable tubular element for sealing exerting a load between a pair of members and having at least one radially inwardly concave convolution and at least one radially outwardly concave convolution between its ends is made from a strip of metallic material which work hardens when stressed to beyond its elastic limit when compressed between the members. The element may be made of austenitic stainless steel or an alloy of nickel, chromium and iron. In Fig. 1 it provides a packing between a cylinder 12 and a cover 10 and may be circular or elliptical. The packing is compressed to stress it beyond its elastic limit, each end of the packing being flat as shown or conical so as to form a sharp sealing edge which is pressed into the surface of the member being sealed. The element may be coated or the sealing edge only covered with silicone rubber, P.T.F.E. or silver. For high pressure applications, the central convolution may be supported by a shrunk-on ring or split ring (106), Fig. 14 (not shown). In Fig. 15, the element 108 forms the secondary seal and loading spring of an end face seal, the element being initially compressed to stress it beyond its elastic limit as specified. In Fig. 12, the element 58 is used as a relief valve and is compressed to close an inlet 54 in a valve body 52; if desired the interior of the element may be in communication with fluid pressure to preload the valve and in a modification, a valve member is interposed between the closed end of the element and the inlet 54. In Fig. 11 (not shown), the wall (50) closing the end of the element may be made to a different thickness to that of the tubular wall for use in pressure actuated switches or calibrated bursting diaphragms.
Patent GB-859907-A (GB)
Title: Apparatus for preheating cement powder or similar materials
Inventor: HELMING BERND
IPC: F27B7/20
Filed: 1959-10-08
Abstract: 859,907. Preheating cement. POLYSIUS G.m.b.H. Oct. 8, 1959, No. 34191/59. Class 51(2). Cement raw materials are preheated in a number of cyclones 3, 4 arranged one above the other and connected to a main shaft 2 receiving waste gas from the kiln 1. The dust outlet pipes 7 of the upper cyclones 4 lead into the main shaft 2 above the gas outlets 9 of the lower cyclones 3, which enter the shaft tangentially. Below the pipes 9 a funnel-shaped partition 10 with a valve directs the waste gas from the kiln into the gas inlets 5. The lower cyclones deliver dust into the kiln 1. The powdered raw materials are delivered, preferably pneumatically, through a pipe 16 surrounded by an adjustable sleeve 16a to regulate the position of the feed, and is distributed by a cone 16b. In a modification, Fig. 2, the plant is divided into sub-assemblies, each comprising a main shaft part 20, and a platform 24, which also forms a partition for the main shaft. Two or more cyclones 26 are arranged at each level, and the dust outlets 31 of the cyclones at each level lead into the gas inlets 29 of the cyclones of the next lower level. Each cyclone may be shut off for cleaning without interrupting the operation of the others. The cyclones may be arranged in two diametrically opposed rows, one above the other, four cyclones at each level may be arranged in four spirals round the main shaft, or they may be offset. The axis of each cyclone may be inclined so that all the gas inlets and outlets and dust outlets can be short straight pipes.
Patent GB-931247-A (GB)
Title: Adjustable connection unit for joining right-angularly disposed structural members
IPC: F16B12/32
Filed: 1961-09-25
Abstract: 931,247. Bracket connection for structure members. V.R.P. SAXE. Sept. 25, 1961, No. 34216/61. Classes 20 (2) and 20 (4). An angle bracket 5 is secured to a girder 6 for relative movement thereto by means of a block 14 which can slide in the flange 10 of the bracket and is welded to the girder by a plug weld 14<SP>1</SP>. The flange 10 is apertured and contains the block 14 by an inwardly-projecting rib 12 in sliding engagement with a peripheral groove 13 in the block. A yoke 8 secured to a member 9 receives the other flange 7 of the bracket.
Patent GB-1411974-A (GB)
Title: Analogue-to-digital converters
IPC: H03M1/00
Filed: 1972-07-21
Abstract: 1411974 Logarithmic analogue to digital converter WANDEL U GOLTERMANN 21 July 1972 [5 Aug 1971] 34352/72 Heading H3H In an analogue to digital converter of the dual ramp type in which the digital output is the logorithm of the analogue input voltage, the frequency of the timing pulses varies in a stepwise approximation to a hyperbolic function. The ratio of adjacent timing pulse frequencies is 1 : 2<1>/n and in the example is 1 : #2 (i.e. n=2). As described on unknown voltage UM and a standard voltage Uo can be applied to resistor R and the input of the integrator comprising operational amp 2 and capacitor 3. The inte. grated output is fed to comparator 5 which compares it with either Uo or earth. The comparator output is passed to timer 6 which initiates programme controller 11 and opens gate 8 to allow clock pulses from clock 7 to be fed through divider chain 14 and one of dividers 16 to counter 10. The output of the divider chain is also fed to a 30 : 1 divider 12, the output of which steps the programme controller 11 which operates shooting switches 13 and change over switch 15. Two methods of operation are described. 1. Uo greater than UM.-The integrator output is raised to Uo. UM is applied to comparator 5 and - Uo to the integrator. The clock is run and the division factor reduced i.e. the frequency increased while the integrated voltage drops from Uo to UM, the count registered in counter 10 being the lagorithmic value of UM. The division and control section works as follows. Initially all switches 13 are open, i.e. all 2 : 1 dividers 14 are in circuit and switch 15 selects the 7 : 1 divider. After 30 pulses have been counted by 30 : 1 divider 12, controller 11 switches switch 15 to the 5 : 1 divider. After another 30 pulses switch 15 is switched back to the 7 : 1 divider and one 2 : 1 divider 14 is switched out. The process is similarly repeated giving division factors of 56, 40, 28, 20, 14, 10, 7, 5 each corresponding to a frequency increase by a factor of #2. 2. UM greater than Uo.-With the integrator output initially at zero, UM is applied to the input for a predetermined time resulting in an integrated voltage Ux. A voltage - Uo is then applied to the input the integrated voltage is reduced back to zero. The clock is started at time To (defined later) after the application of voltage - Uo and continues until the integrated voltage reaches zero. The division factor is increased so that the clock frequency decreases hyperbolically. To is the time to reduce the integrated voltage Ux to zero with an input - Uo when UM=Uo. The theory of operation is given in the Specification. The counter may be initially set to a negative value for the second embodiment so that the period To can be allowed for and a direct reading obtained.
Patent GB-855033-A (GB)
Title: Improvements in and relating to heating appliances
IPC: F24C11/00
Filed: 1958-10-27
Abstract: 855,033. Cookers combined with fires. BUDWORTH, M. B. S. July 31,1959 [Oct. 27, 1958], No. 34361/58. Class 126. A combined gas or electric fire and cooker unit comprising a fire c, an oven d and boiling rings (not shown) has a top cover e forming a working surface and hinged to it by a double pivot hinge i, j a flap f which conceals the oven door. To use the cooker, the flap f is folded back on the cover e and both are raised to a vertical position about a pivot k, the cover e forming a splash back and preferably having a shelf w pivoted to it.
Patent GB-343881-A (GB)
Title: Improved process of pyrolysis of hydrocarbons
IPC: C07C2/76
Filed: 1929-11-12
Abstract: The production of acetylene and other unsaturated hydrocarbons by the pyrolysis of normally gaseous hydrocarbons, especially methane and its next higher homologues, is effected at a temperature above 1000 DEG  C. and at a high space velocity in the presence of at least an equal volume of a gaseous or vaporized water-soluble diluent, other than steam.  Hydrogen chloride is the preferred diluent, and when this is used at relatively high temperatures, chlorinated hydrocarbons may also be obtained.  An example is given in which a mixture of equal volumes of methane and hydrogen chloride is treated.
Patent GB-832997-A (GB)
Title: Improvements in or relating to frequency converters
IPC: H02M5/00
Filed: 1956-11-12
Abstract: 832,997. Oscillating machines. PHILIPS ELECTRICAL INDUSTRIES Ltd. Nov. 12, 1956 [Nov. 15, 1955], No. 34523/56. Class 35. A frequency converter comprises input and output gapped magnetic circuits 8, 9 each having a winding 10, 11 and an armature 1 ... 3 mounted for reciprocation transversely of the gaps, the armature having respective rows of permanent magnet poles 4, 5 and 6, 7 arranged to co-operate with a corresponding number of poles 12 and 13 disposed in the circuits 8, 9 and transversely of the gaps, the number of poles 12, 13 differing from each other. The armature comprises permanent magnet bars 2, 3 and a non-ferromagnet body 1 having a shaft 14 resiliently suspended by slotted diaphragms 15, 16 from a fixed support 19, and may oscillate at the natural frequency.
Patent GB-605364-A (GB)
Title: Concrete distributing machines
IPC: E01C19/47
Filed: 1945-12-20
Abstract: 605,364. Concrete distributers. WITHERS, J. S. (Koehring Co.). Dec 20, 1945. No. 34554. [Class 107] In a concrete distributer comprising a portable base C, a concrete mixing drum A mounted thereon, a materials discharge device G, a boom and tandem buckets distributor unit, and a rotary distributor 9 intermediate the discharge device and said buckets, means are provided to move the buckets 21, 22 separately outwardly, along the boom 24, 25, and together inwardly by engagement of the outer with the inner bucket after discharge. Rotation of the mixing drum A drives the shaft 8 and distributor 9 via gears B, 1 shaft 2, sprockets 6, 7 and bevelled gears 7b, 7c; simultaneously, through gears 8a, 8b, shaft 8c, sprockets 10, 11, and bevelled gear 12, the gears 13, 14 are rotated in opposite directions. Material from the drum A is led via the chute G to the rotary distributor 9 and thence to the buckets 21, 22. Movement of the lever 67 to the lower "out" position causes the counter clockwise motion of the gear 13 to be transmitted to the shaft 16 and drums 17, 18 via the arm 69, shaft 71, arm 74, sleeve 75, lever 76 and clutch 15a; the cable 40 attached to the arm 42 thus pulls the outer bucket 21 outwardly along the boom 25, where it is discharged on reversing the motion of the shaft 16 by moving the lever 67 to the " in " position momentarily. This releases the clutch 15a and causes the clutch 20a via the arm 70, sleeves 72, 75 and lever 77 to engage the shaft t 16 with the sleeve 19 on which is mounted the gear 14. The bracket arm 42 now pulls inwardly on the levers 45, 46 causing the latter to engage the arm 47, which through the agency of the rod 50 opens the base 21a of the bucket. The lever 67 is then moved through neutral to the upper " out " position, causing the clutch 23a to engage the drum 23 on which is wound the cable 37 which, attached to the inner bucket 22, pulls it outwardly along the boom. When adjacent the bucket 21, its arm 32 on striking the member 33 is swung over to open its discharge door 22a and at the same time to contact the lever 34 which raises the bar 35 to tilt the bracket 27, so rocking the shaft 26 (see Fig. 8, not shown) and actuating the levers 30, 31 to throw out the clutch 23a and stop the bucket. Finally, moving the level 67 into the " in " position throws the clutch 20a into engagement again to return the bucket 21 pushing the bucket 22 before it. The boom part 25 is hinged at I to the inner part 24 and may be raised by the cable 55 which passes to the drum 59 driven through the gears 5 and shaft 60. The latter can also be used, via gear 61, worm 63 and swing bracket 65, to rotate the whole boom about the shaft 8 as axis in the horizontal plane; whilst the mounting of the boom bracket 80 on pivot pins at 80a, 80b allows of tilting to the horizontal. U.S.A. Specifications 1,141,470 and 1,824,580 are referred to.
Patent GB-1042587-A (GB)
Title: Method of making latex-bonded sheet
IPC: C08K7/12
Filed: 1963-09-02
Abstract: A sheet is made by adding to a slurry in water of fibrous material that consists of or includes asbestos a latex comprising a mixture of a rubbery butadiene-styrene copolymer, butadiene-acrylonitrile copolymer or neoprene and a carboxylated rubbery polymer, and dewatering the slurry.  The carboxylated polymer may be a terpolymer of styrene, butadiene and itaconic, maleic or methacrylic acid.  The asbestos fibres may first be beaten in water, and the latex added to the beater, the stock chest or immediately before the fan pump of the paper machine. The latex may also contain emulsifiers or antioxidant. A precipitating agent such as calcium chloride or aluminium sulphate may be added before or after the latex, but is not needed if the proportion of carboxylated polymer is less than 15% of the total solids in the latex.
Patent GB-1424279-A (GB)
Title: Cathode ray storage tube including a microchannel electron  multiplier plate
IPC: H01J43/24
Filed: 1973-07-20
Abstract: 1424279 Cathode-ray storage tubes PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 20 July 1973 [24 July 1972] 34654/73 Heading H1D A cathode-ray storage tube comprises a microchannel electron multiplier plate 14, guns on opposed sides producing reading and writing beams, and collector electrode 31 for intercepting electrons emitted and/or reflected from the plate. The writing beam causes local saturation of plate 14, resulting electrons being collected by electrode 31 to leave positive charges at the output of the plate. The positive charges are only removed by conduction in the plate which requires several millisecs. The modulated collector current is recorded in memory 37 and may be reproduced when desired by a display device.
Patent GB-467211-A (GB)
Title: Improvements in or relating to electric circuit-breakers
IPC: H01H33/75
Filed: 1935-12-14
Abstract: 467,211. Liquid-break switches ; arcrupturing in switches. REYROLLE & CO., Ltd., A., LEESON, B. H., and WILD, R. W. Dec. 14, 1935, No. 34735. Drawings to Specification. [Class 38 (v)] In a liquid-break alternating-current circuitbreaker of the kind having an arc-control device comprising an enclosure of insulating material provided with a series of aligned vents on one side, the moving contact member being disposed in close proximity to the vents so as substantially to close some or all of them when the contact member is in its normal closed position, the moving contact member is provided with one or more ducts through which the pressure set up by the arc within the enclosure causes liquid to be ejected through some or all of the vents before the arc is drawn past such vents. The arrangements described for carrying out the invention are identical with those described in Specification 467,210. Specifications 435,250 and 435,308 also are referred to.
Patent GB-1548868-A (GB)
Title: Interface detection by neutron scatterng
IPC: G01T1/167
Filed: 1975-08-21
Abstract: In order to detect the interface, a californium-252 neutron source (2) is employed, the scattered neutrons being observed by means of a helium-3 detector (1). Said detector is connected to a preamplifier (3) of a high-voltage source (4) for the bias, an analysing amplifier (5) and a digital counter (6). The detector system is arranged in a shield (7) which consists of a graphite reflector (8), a paraffin moderator (9) and a cadmium layer (10). In order to detect an interface of materials having different hydrogen content in a steel vessel, there is arranged on the outside thereof a neutron source and a detector, which are at a mutual distance of at most 50 cm. Such an arrangement of detector and source is permissible, because the detector is considerably more sensitive to the neutrons scattered by hydrogen nuclei than to neutrons radiated by the source. <IMAGE>
Patent GB-367785-A (GB)
Title: Improvements in high voltage direct current systems
IPC: H02M7/10
Filed: 1930-11-19
Abstract: 367,785. Vacuum or low pressure apparatus. COCKCROFT, J. D., 31, Sedley Taylor Road, Cambridge. Nov. 19, 1930, No. 34871. Drawings to Specification. [Class 39 (i).] The rectifiers employed in an arrangement for producing high-tension D.C. from an A.C. source may be of the gaseous discharge or thermionic type and are preferably operated under continuously maintained vacuum conditions, the string of rectifiers being mounted in end-to-end relationship with their envelopes in communication with each other and with a pump. Where used for supplying an X-ray tube, the tube may also be arranged in communication with the rectifier envelopes so as to be evacuated by the same pump. Specification 366,561 is referred to.