baber/WOPTO huggingface dataset:
Patent GB-931026-A (GB)
Title: Improvements relating to frequency indicating apparatus
Inventor: BALL MAURICE ALVEY
IPC: G01R23/02
Filed: 1960-12-01
Abstract: 931,026. Frequency measuring. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 17, 1961 [Dec. 1, 1960], No. 41357/60. Class 40 (5). A frequency-indicating apparatus comprises a choke L1 the core of which saturates during each half-cycle of the voltage (whose frequency is to be measured) applied thereto via a transformer P1, S1. The voltage produced across said choke, which is proportional to the frequency of the applied voltage, is rectified at MR1 and indicated on a meter M. The rectifier output is preferably biased by an opposing stabilized D.C. voltage so that the meter M only indicates frequencies above a given value. This bias is derived from a further secondary winding S2 fed from the frequency source. The output of S2 is rectified at MR2, smoothed at L2 and stabilized by Zener diodes Z1, Z2, which present a very low impedance when the output voltage from MR2 exceeds a certain value. This voltage is applied to meter M in opposition to the voltage from R2. Thus the meter can be adjusted to read zero for any given input frequency, by variation of diodes Z1, Z2, and the tapping on resistor R2. The characteristics of the saturable choke L1 are such as to render the meter reading substantially independent of amplitude variations of the input to P1.
Patent GB-1324271-A (GB)
Title: Colour television image pickup apparatus
IPC: H04N9/07
Filed: 1970-08-28
Abstract: 1324271 Colour television camera TOKYO SHIBAURA ELECTRIC CO Ltd 28 Aug 1970 [30 Aug 1969 (4)] 41545/70 Heading H4F  Image light is projected on to the target of a pick-up tube 16, Fig. 11, via, a filter 24, Fig. 7, which has alternate transparent 24 1  and red light absorbing strips (cyan strips) 24 2  arranged perpendicularly to the horizontal line scan (i.e. vertical strips) and alternate transparent 24 3  and blue light absorbing strips (yellow strips) 24 4  arranged at an angle to the line scan, this angle and the pitch of the latter strips being so chosen that the resulting blue colour component carrier signal has a frequency equal to an odd multiple of half the horizontal scanning frequency and a phase difference of 180 degrees from line to line. As far as the scanning pick-up electron beam is concerned the blue light absorbing strips comprise effectively a mosaicilke pattern, the scan lines starting with a blocking filter and a transparent filter alternately (Fig. 8B, not shown). The pitch of the red light absorbing strips is such that the resulting carrier signal has a frequency equal to a multiple of the horizontal scanning frequency, and thus the harmonics of both carriers are interleaved which facilitates complete separation (the unmodulated (e.g. green) component signal being spaced from the red component carrier (Figs. 9 and 10, not shown). Separation of the component signals is effected by delaying the output signal of the pick-up tube 16 by one line period 18 and adding 19 and subtracting 20 the signals. From adding circuit 19 only harmonics of the horizontal scanning frequency are obtained and these are fed via filters 25 and 26 and demodulator 27 to derive the red signal R and the green signal G, the red signal and the blue signal (derived by demodulating the filtered output of subtractor 20 which comprises harmonics of an odd multiple of half the horizontal scanning frequency) being subtracted 22 from the output of low pass filter 25. While it is necessary that the low frequency green signal and the red signal do not interfere with each other the blue signal may interfere with the green signal or have a carrier frequency adjacent the red signal carrier frequency, separation being possible because they are frequency interleaved. Instead of an image pick-up tube a flying spot scanner may be employed.
Patent GB-1480817-A (GB)
Title: Oxide ceramic resistor
IPC: H01C7/04
Filed: 1974-09-26
Abstract: 1480817 NTC resistors ROBERT BOSCH GmbH 26 Sept 1974 [27 Sept 1973] 41846/74 Heading H1K An NTC oxide ceramic resistor for use above 400  C. comprises Fe 2 O 3 , Al 2 O 3  and MnO such that the resistor contains 30-100% by weight of Fe 2 O 3 , and the MnO concentration is proportional to the Fe 2 O 3  concentration raised to the power 1À6, with the proportionality constant being between 0À3 to 12. Methods of preparing the resistor are described and include grinding the oxides, followed by calcining, grinding,. binding with alcohol, pressing and sintering Au, Ag or Pt contacts may be soldered or welded to the resistance body, or Pt wires may be sintered into the body.
Patent GB-1236602-A (GB)
Title: Phosphoric, phosphonic, thiono-phosphoric and thiono-phosphonic acid esters
Inventor: SCHRADER GERHARD
IPC: C07F9/18
Filed: 1968-09-04
Abstract: 1,236,602. Phosphorus-containing esters and phenolic intermediates therefor. FARBENFABRIKEN BAYER A.G. 4 Sept., 1968 [9 Sept., 1967], No. 42047/68. Heading C2C. The invention comprises phosphorus-containing esters of the formula wherein R 1  is a C 1 -C 6  alkyl or alkoxy radical or is phenyl, R 2  and R 3  are C 1 -C 6  alkyl radicals and X is an O or S atom. They may be obtained by reacting a compound (R 1 )P(X)(Hal)(OR 2 ) wherein Hal is halogen, with a compound of the formula in the form of a salt or in the presence of an acid-binding agent, the reaction being preferably carried out at 20‹ to 70‹ C. in the presence of a solvent or diluent, e.g. a lowboiling aliphatic ketone, a nitrile or a hydrocarbon or chlorinated hydrocarbon. Water can also be used as a solvent. The products (I) have insecticidal, acaricidal and nematocidal properties. The phenolic compounds (II) may be obtained by reacting appropriate α-halo-α- alkyl - mercaptoacetonitriles with thiohydroquinone in a solvent, e.g. acetonitrile in the presence of an acid acceptor and examples are given for the production of such compounds in which R 3  is methyl and isopropyl respectively.
Patent GB-1170697-A (GB)
Title: Improvements in and relating to Practice Golf Clubs
Inventor: WHITING FRANCIS JOHN
IPC: A63B69/36
Filed: 1967-09-18
Abstract: 1,170,697. Golf club head provided with level checking means. F. J. WHITING. 17 Sept., 1968 [18 Sept., 1967], No. 42349/67. Heading A6D. As shown in the Figure, a golf club head e.g. of a putter is provided with level checking means e.g. a spirit level 5 housed in a recess in the upper surface of the club-head 3.
Patent GB-1314237-A (GB)
Title: Apparatus for coating travelling webs
IPC: B05C11/06
Filed: 1970-09-04
Abstract: 1314237 Coating webs KOHLER COATING MACHINERY CORP 4 Sept 1970 [8 Sept 1969] 42405/70 Heading D1L In a paper coater which applies a coating to one surface of a travelling web, the web moves around a back-up roll while an air knife directs an air jet at an angle against an upwardly moving previously coated web surface. The coater apparatus includes a blow-off box comprising a suction chamber, a coating material collector chamber within the suction-chamber, suction means communicating with a suction chamber passage formed by walls of the suction and collector chambers, and a spoiler blade mounted within the blow-off box, spaced from the back-up roll and extending parallel to the axis of the back-up roll and transversely of the openings of the suction and collector chambers, the spoiler blade having a flat surface which blocks the flow of a major portion of air discharged from the air knife and entrained mist hugging the coated surface of the web and directs the air and mist into the collector chamber. In the figure, air knife 9 directs air on to coated surface 4. The air discharged hugs the coated surface and entrains a mist of excess coating. The flow of the mist is mainly blocked by a spoiler blade 62 but mist clinging to the blade by the 'Coanda effect' and mist still clinging to the back-up roll is directed into the collector chamber C by secondary spoiler blade 64. Vortex suppressor baffles are provided at 49, 57 and 54a. Liquid coating collects in sump 53 to be returned to a circulating tank and re-used.
Patent GB-1298899-A (GB)
Title: Process for producing tempered glass sheet
IPC: C03B27/044
Filed: 1970-09-04
Abstract: 1298899 Tempering glass sheets NIPPON SHEET GLASS CO Ltd 4 Sept 1970 [4 Sept 1969] 42560/70 Heading C1M To shatter during the tempering process those glass sheets that would otherwise spontaneously shatter when in use, glass sheets immediately before or after tempering are heat treated by heating for a period of time, the temperature during at least part of that period being between 100‹ and 380‹ C., the time H, for which the temperature T is between 100‹ and 380‹ C. being determined from the formula where a = 250 if the treatment is carried out after tempering and a = 540 when carried out before tempering. When the treatment is carried out after tempering H is more than five minutes, when carried out before tempering H is more than 60 minutes. The tempered and heat treated glass may be rapidly heated to a temperature of 300 to 950‹ C. for 10 to 300 seconds. Treatment after rapid air cooling tempering may be carried out on a glass sheet 6 in an air heated furnace 3 in which air is taken in through an inlet 10 the furnace base heated by a burner 9 and fed into a heating chamber 11 via a passage 7<SP>1</SP>. Treatment prior to tempering is carried out in a divided furnace 21 consisting of three heating chambers 26 each heated by circulating hot air through passages 23, 23<SP>1</SP> in the bottom wall of the furnace provided with a burner 24. After treatment, the glass sheet is passed to a temporing furnace for heating to a temperature in the vicinity of the softening point and cooling by blowing air.
Patent GB-966979-A (GB)
Title: Improvements relating to suction floor washing apparatus
IPC: A47L11/30
Filed: 1960-12-13
Abstract: 966,979. Suction floor washing apparatus. HOOVER Ltd. Dec. 13, 1960 [Dec. 14, 1959], No. 42897/60. Heading A4F. A dirty water collecting bag assembly for use with a floor washer, in which suction is applied to the interior of the bag when water is picked up from the floor comprises a flexible bag 31 secured between an outer resilient ring 33 and a rigid reinforcing ring 32 having a grid structure 35 extending across the bag 31. Baffles 37 extend from the grid towards the bottom of the bag to prevent it from being pulled through the rings when suction is applied. The bag assembly may be incorporated in a suction floor washing appliance as described in Specification 928,046.
Patent GB-975114-A (GB)
Title: Improvements in and relating to heatable press plates for repairing conveyor belts or the like
Inventor: LUDWIG GEORG
IPC: B30B15/06
Filed: 1961-12-01
Abstract: 975,114. Repairing conveyer belts. I. LUDWIG, [trading as WAGENER & CO. MASCHINENFABRIK]. Dec. 1, 1961, No. 43032/61. Heading B5A. The ends of a thermoplastic conveyer belt 6 are joined or repaired by passing the belt between heating plates 1, 2 furnished with marginal cooling ledges 8, 9 which are separated by inserts 11 of low heat conductivity, or slots forming air gaps (see Fig. 3, not shown), which inserts 11 or slots extend right through the plates to the surfaces thereof in contact with the belt 6. The plates 1, 2 are heated electrically or by passing hot water through pipes 3 and the coolant is passed along rectangular pipes 10. The upper plate 1 is forced against the belt 6 by beams 5 adjusted by spindles. Specification 810,320 is referred to.
Patent GB-1434848-A (GB)
Title: Method fo hydrostatic extrusion
IPC: B21C23/00
Filed: 1973-09-13
Abstract: 1434848 Extruding ALLMANNA SVENSKA ELEKTRISKA AB 13 Sept 1973 [14 Sept 1972] 43071/73 Heading B3P In a method of hydrostatic extrusion a billet 8 is used which has a cavity 11 at its rear end, the cavity being filled with hydrostatic extrusion fluid or other material and near the end of the extrusion process being isolated from the extrusion chamber. The isolation of the cavity as the billet rear part enters the die 3 causes a pressure build up in the cavity which expands axially of the billet, Fig. 8. In the die orifice the pressure may sever the billet from its rear part, Fig. 10. The cavity may be defined by a radial hole 11 or the billet may have several cavities each defined by a radial hole which may meet each other, Fig. 3 (not shown). Alternatively the cavity may be defined by an annular groove (21), Figs. 4 and 5 (not shown). The pressure of the hydrostatic fluid drops when the cavity reaches the die and this drop may be detected and used to control the extrusion process. When the cavity is exposed downstream of the die a bang is produced which may also be used for control. The cavity may be filled with material which has a smaller deformation resistance than the billet. Plugs of plastics or metal may be used for the holes 11. The process can be used for tubular billets, Figs. 12-15 (not shown).
Patent GB-940601-A (GB)
Title: Process and device for producing protective coatings
IPC: B05D7/22
Filed: 1961-12-01
Abstract: 940,601. Coating tubular articles. KNAPSACK-GRIESHEIM A.G. Dec. 1, 1961 [Dec. 17, 1960], No. 43147/61. Heading B2B. Tubular articles, e.g. pipes, are coated internally and externally by supporting the articles in an inclined position with respect to the horizontal and allowing powdered coating material to trickle from above down the rotating heated articles. The coating material may be polyethylene, polypropylene, polyamide, cellulose esters, polyvinyl chloride, epoxy resins, chlorinated polyethers, fluorocarbon polymers and polycarbonates. The articles may be heated before and/or during and optionally after coating. As shown, a suitable device for supporting the article 11 to be coated comprises a pivot mounting 2 pivoted at 3 on base support 1 and held by support 4 adjustable in length, a variable drive comprising motor 5 and gears 6 and 7, which motor 5 drives shaft 8 provided with runners 10, and series of burners 12 disposed along the wall of the article 11 to be coated. The shaft 8 is coupled with a non- driven shaft (not shown) provided with runners and the trough formed by the two sets of runners supports the article 11. The two sets of runners are displaceable with respect to each other to allow for articles of different diameter. Several series or lines of burners may be disposed circumferentially along the wall of the article. The burners of one series or line are designed so as to be disconnectable individually or in combination and the burners are adjustable individually or in combination with respect to their distance from the tubular article.
Patent GB-1401315-A (GB)
Title: Mirror adjusting devices
IPC: G01C15/00
Filed: 1972-09-19
Abstract: 1401315 Displacement indicating apparatus SIEMENS AG 19 Sept 1972 [28 Sept 1971 17 April 1972] 43303/72 Heading G2J The inclinations of a mirror 2 about its axis is measured by a linear device e.g. clock 12 by a linear system which gives linear motion corresponding to the tangent of double the angle of displacement of the mirror 70 to this end, the terminal point of the lever 5 is constituted by a roller 9 running on a curved surface 10 having an appropriate profile. The lever shown is telescopic, but (in Fig.2), the roller is carried on a radius cam (24) and runs on a projection of lever 5, thus giving the same conversion.
Patent GB-1287114-A (GB)
Title: Method and apparatus for thermally examining fluid passages in a body
Inventor: PARKER HARRY
IPC: G01N25/72
Filed: 1969-09-02
Abstract: 1287114 Measuring temperature electrically H PARKER 2 Sept 1969 [4 Sept 1968] 43435/69 Heading G1N To detect undesired deviations 11, Fig.4, of thickness of the walls defining passages 7, 8, 9, for cooling fluid, in a turbine blade 1, a fluid from a source 22 having a predetermined temperature different from that of the blade is caused to flow momentarily through one or more of the passages so as to cause changes of temperature at the external surface of the blade, which temperature changes are detected. In a first embodiment, Fig.1, a flow of fluid is induced simultaneously in the blade and through a standard tube 24 of constant bore having walls of predetermined thicknesses 28-32, that 29 being similar to the thickness of the walls adjacent the blade base, 10, and that 32 being similar to the walls at the other end of the blade. The tube is of the same metal as the blade and is arranged to have the same thermal emissivity. The changes of temperature on the blade and the tube are detected by an infrared  scanner 36 supplying electric signals to a C.R.O. 37 and camera 38. Fig. 7 shows the resulting 'thermographs' in which a discontinuity 11<SP>1</SP> indicates the undesired deviation 11 of wall thickness. It is stated that comparisons of the densities of shading of the images 5<SP>1</SP> and 24<SP>1</SP> give quantitative measurements of the blade wall thicknesses. Figs.8-12 (not shown) illustrate the detection of an obstruction (64) in a different form of turbine blade (51) having a central passage (52) with tangential exits (53) and a plurality of passages (54) of lesser bore than that of the central passage disposed in a ring about it. An alternative embodiment using thermocouples is shown in Fig.13, wherein a pair of thermocouples T1, T2 are disposed on opposed walls of nominally equal thicknesses defining a passage 72 in a blade 71. Trigger circuits 73, 74 are each arranged to give a voltage pulse when a predetermined temperature between that of the fluid and the initial temperature of the blade is reached. The pulses are applied to a bi-stable circuit 76 connected to a clock 78 so that the first pulse starts the clock and the second pulse stops it, the time interval being proportional to the difference in wall thickness either side of the passage. In another embodiment, Fig.14 (not shown) a blade (81) has a plurality of passages (82), pairs of thermocouples e.g. (T1-T2) and (T3-T4) being disposed on opposed adjacent walls. Voltages from each pair are fed to a different one of a plurality of differential amplifiers (84). When a selected one of the thermocouples reaches a predetermined value it fires a trigger circuit which actuates a recorder (87) to scan the outputs (86) of the differential amplifiers and record the difference temperatures which are indicative of differences in wall thicknesses.
Patent GB-1468456-A (GB)
Title: Pipe disconnecting apparatus
IPC: F16L37/00
Filed: 1974-10-08
Abstract: 1468456 Unscrewing and screwing-up pipe joints CAMERON IRON WORKS Inc 8 Oct 1974 [6 May 1974] 43599/74 Heading B3N [Also in Division E1] Apparatus for disconnecting the threaded joint 27 between two sections 28 of a pipe string at a subaqueous wellhead, the lower section of pipe being held against movement, includes a housing 21 which is connected as part of the wellhead and has a bore 22 (aligned with the wellhead bore) and guideways 31 opening into the bore 22, and a pair of rams 32 in the guideways 31 having movable jaws 34 which engage the upper section of pipe as the rams 32 move within the guideways (Fig. 4) and which exert a force on the upper section tending to rotate it about its axis in response to further longitudinal movement of the rams 32 (Fig. 5). As described each jaw 34 has gripping teeth on its front face and has an inclined rear face 43 which can slide along an inclined face 41 on the ram body 33. Each jaw is guided by a rod 47 and is biassed towards the position shown in Fig 4 by a spring. The rams 32 are moved inwardly by piston and cylinder devices (not shown) so that the jaws 34 rotate the upper section of the pipe joint as shown in Figs. 4, 5 to break the joint. After the joint has been broken the upper section can be completely unscrewed from the lower section by rotating means on board the drilling vessel (not shown). The housing 21 also includes a pair of rams 54 which support and hold the lower section of pipe against movement and also seal off the well bore around the pipe. A pair of blind rams 90 seal off the upper end of the bore 22 after the upper section of pipe has been removed. If the weight of the lower pipe section resting on the rams 54 is insufficient to prevent rotation of the lower section of pipe, the rams 54 may be provided with gripping means, e.g. gripping teeth (not shown) on the rams 54 where they engage the shoulder 56 of the lower pipe section or a one-way clutch means (not shown) in the form of a finger pivotally mounted on the ram and having a sharp point projecting into the recess of the front face of the ram and which digs into the pipe 28.
Patent GB-1435579-A (GB)
Title: Emulsion polymers of vinyl chloride having thermal stability
IPC: C08K5/098
Filed: 1973-09-18
Abstract: 1435579 Stabilized vinyl chloride polymers BASF AG 18 Sept 1973 [19 Sept 1972] 43638/73 Heading C3P A thermoplastic moulding material comprises an emulsion polymer of vinyl chloride, 0À05 to 1 % of calcium magnesium or zinc formate, and a known stabilizer against heat and light. The formate may be added to the polymer emulsion as an aqueous solution or by spraying a solution on to the polymer during the drying process. In examples the polymer is polyvinyl chloride, the stabilizer is dioctyl tin thioglycollic acid ester, a lead stabilizer, cadmium/zinc or barium/ cadmium stabilizer, amino crotonic acid ester or diphenyl thio urea. Other additives include sodium carbonate, montan wax, hydrocarbon wax, dicarboxylic ester, dioctyl phthalate, epoxy plasticizer and calcium stearate.
Patent GB-1426008-A (GB)
Title: Separation and collection of egg components
IPC: A47J43/14
Filed: 1973-09-19
Abstract: 1426008 Separation of egg components C S KHENG 19 Sept 1973 44050/73 Heading A4D A method of separating the components of eggs e.g. for micro-biological use comprises freezing the eggs and cutting the eggs each into two or more parts while they are still substantially solid, and separating and collecting the components of the eggs as they thaw. The contents may be separated and collected as they thaw, either on a sieve or by removing the solid or semi-solid components with forceps. The eggs may be cut by the sterile blade of a saw. The surfaces may be disinfected before cutting.
Patent GB-922766-A (GB)
Title: Improvements in or relating to spark erosion machines
Inventor: DIVERS SYDNEY VALENTINE
IPC: B23H1/02
Filed: 1959-12-29
Abstract: 922,766. Cutting by spark discharge. LINDERFORT Ltd. Dec. 21, 1960 [Dec. 29, 1959], No. 44059/59. Class 83 (4). In a spark erosion apparatus in which an alternator in series with a rectifier supplies the discharge gap, means are provided for stabilizing the current output of the alternator. For fine machining a pulse relaxation type circuit is connected in place of the rectifier. Actuation of a start button 47 energizes a relay 46 to start a motor 14 driving a pump 13 which circulates paraffin from a tank 12 through a bath 10 containing the work 15 and back through a filter. When the paraffin in the bath 10 reaches working level, a float switch 58 starts a motor 24 driving single-phase alternator 20 provided with a carbon pile or transistorized current controller 27. The output of the alternator 20 is fed by a relay 30 through a half wave rectifier 23 consisting of a bank of silicon rectifier elements cooled by a fan 29 to the electrode 16. A feed motor 17 controlled by an amplifier 48 in accordance with the gap voltage lowers the electrode. When the required depth of work 15 has been eroded, an adjustable limit switch 19 operates, stops the pump 13 allowing the float switch 58 to open, stops the motor 24 and actuates a relay 50 to retract the electrode 16 until an upper limit switch 18 is actuated. For fine machining a switch 33 is rotated so that relay 32 comes up instead of relay 30 to connect the alternator 20 through a full-wave rectifier 37 to one of a number of condensers 39 of different capacity which are in parallel with the spark gap. Any condenser 39 is selected by a selector 38 coupled to a switch 41 which shunts the condensers 39 through a condenser 43 during the changeover. Specification 922,767 is referred to.