baber/WOPTO huggingface dataset:
Patent GB-934699-A (GB)
Title: Improvements in analogue computers
IPC: G06G7/22
Filed: 1959-12-08
Abstract: 934,699. Electric analogue calculating systems. GENERAL PRECISION Inc. Dec. 8, 1959 [Dec. 12, 1958], No. 41714/59. Class 37. In a rectangular-to-polar coordinate conversion apparatus comprising two multiplying and dividing systems 110, 111, the outputs of which are added in a summing amplifier U102 to provide an output R representing the vector sum of two rectangular components X; Y, applied at terminals 101, 103, the output voltage R is fed back to the inputs of the two systems to produce at the output terminals 117, 119 voltages proportional to the square of the analogue inputs divided by the feedback voltage The analogue voltage X, and feed-back R are applied via scaling resistors B101, R102, to a D.C. amplifier U101, the output providing a D.C. bias for the secondary of a transformer T101 in the input to a blocking amplifier 105 to which sawtooth A.C. is also applied from a source 11. The amplifier 105 which is arranged to saturate when the input potential exceeds a few millivolts positively or negatively produces at terminal 120 a square wave of constant amplitude time modulated by X/R which is multiplied in a transistor switching circuit 113 by the input X to produce at terminal 117 a voltage   proportional to X<SP>2</SP>/R. A voltage proportional to Y<SP>2</SP>/R similarly produced on terminal 119 is added to X<SP>2</SP>/R in an adding feed-back amplifier U102 in which capacitor C102 serves to filter and average the pulse trains. A further polarity inverting unity gain feed-back amplifier U103 is provided. The feed-back from U102 to the input terminal 102 is fed via switching transistors 112 and filter 115, The time-modulated output from amplifier 105, the time modulation of which is propor- X tional to -, and thus sin 0 is applied to a further R pair of switching transistors 125 which can multiply a further function by sin # or, if equal and opposite constant voltages are applied to the collectors, can produce an output voltage which is solely a function of sin #. A voltage proportional to cos # may similarly be extracted from transistor 126. A protection circuit is X provided which continually monitors -.Y R Y and -.X to operate, in the event of unbalance, R a relay K to light an alarm lamp or switch in spare equipment. Specifications 908,518 and 934,698 are referred to.
Patent GB-1154003-A (GB)
Title: Electrical Switch
IPC: H01H13/28
Filed: 1966-09-19
Abstract: 1,154,003. Retractive switches. E. MARQUARDT, J. MARQUARDT, H. MARQUARDT and E. MARQUARDT [trading as J. & J. MARQUARDT]. 19 Sept., 1966 [23 Sept., 1965], No. 41737/66. Heading H1N. A microswitch has a contact arm n articulated to a lever k by a toggle link r. The lever k is pivoted at v to a terminal bracket member i having an aperture through which the contact arm n extends. When the switch is operated by depression of button l the aperture limits the movement of the contact arm so that the effective axis of the toggle link r does not pass the pivot point v and hence the tension spring m exerts a restoring couple on lever k making the switch inherently retractive. The pivotal movement of lever k provides some longitudinal sliding movement of arm n which serves to break any welding of the contacts.
Patent GB-422505-A (GB)
Abstract: 422,505. Covering-machines. LASTEX YARN & LACTRON THREAD, Ltd., 32, Osnaburgh Street, London, and HEALEY, J. G., Fort Dunlop, Birmingham. Oct. 27, 1933, No. 29917. [Class 109] [See also Groups VIII and IX] Comprises a device to control variations in the tension of elastic thread fed from a package to a covering &c. machine. An initially predetermined restraint imposed on the thread, when running free, is reduced in proportion to increases in tension imposed by e.g. the coils sticking together on the package. The thread passes through fixed eyes 2, 5, and an intermediate eye 3, on an arm 4 pivoted at 8. A bracket 24 carries a washer 20 threaded on a shaft 17 and floating between two springs 18, 19, the tension of which can be adjusted by a nut 21. The thread also passes between gates 10, 11, the gate 11 being pivoted at 13, 14 and carrying the shaft 17 on an extension 15. The arm 4 when drawn towards the frame 6 under tension opens the gates 10, 11 until the tension is relieved.
Patent GB-1364195-A (GB)
Title: Acetals and ketals of 20 21-dihydroxy-prgnane compounds
IPC: C07J5/00
Filed: 1972-04-17
Abstract: 1364195 Acetals and ketals of 20,21- dihydrosypregnane compounds UPJOHN CO 17 April 1972 [23 April 1971] 42364/73 Divided out of 1364193 Heading C2U Novel steroids of the Formula (IV) are prepared as follows wherein R 1  and R 2  are each H, C 1 -C 8  alkyl, C 7 -C 13  aralkyl or C 6 -C 12  aryl or R 1  and R 2  together with the adjacent carbon atom are C 3 -C 8  cycloalkylidene. The starting materials are subjected to a photo-sensitized oxygenation, the resulting 20-hydroperoxides, which need not be isolated, are reduced with a tri-alkyl phosphite, and the resulting 20-ols are reacted with an appropriate aldehyde or ketone R 1 R 2 CO. The novel steroids are starting materials in the preparation of known anti-inflammatory steroids. See Specification 1,364,193.
Patent GB-1025247-A (GB)
Title: Supporting device for telephone handset
IPC: H04M1/05
Filed: 1963-10-29
Abstract: 1,025,247. Supporting telephone handsets, H. L. NEILSON. Oct. 29, 1963 [Nov. 6, 1962.] No. 42624/63. Heading H4J. A supporting device for a telephone handset 20 (Fig. 1) comprises a mounting element 16, a resilient fastener 22 for securing the device to the handset 20 and an arm 12 which may be rested close to the handset 20 or may be swung outwards (Fig. 2, not shown), a cam portion of the mounting element being adapted to slide on an adjacent portion of the handset 20 and to hold the mounting element with the arm 12 in either position, and the arm 12 also being pivotable to the left or right of the handset (Fig. 5, not shown). The resilient fastener 22 comprises a rubber band or coil spring looped on to integral lugs 24 on opposite sides of element 16. Arm 12 has a high-friction coating 28 of soft rubber, knurled or roughened, for engagement with the shoulder of a user's garment. The mounting element 16 comprises a top plate 30 (Fig. 6, not shown) and two integral side wings 32 which extend on opposite sides of neck 18. Element 16 is formed with a camming web 34 between and integral with wings 32. The free edge 36 of web 34 is slightly curved to conform to the adjacent surface of neck 18. The arm 12, when swung outwards against the resilience of fastener 22, is held in position by a back edge 38 (Fig. 7, not shown) of top plate 30 and by the web edge 36 and is stabilized by the side wings 32. The limit of sideways movement (left or right) of arm 12 is determined by an arcuate channel 44, in arm 12, which co-operates with a stud 42 on a plate 30. Arm 12 is held either centrally or at the left or right extent of its sideways movement by a stud 46 engaging in one of three pockets in the underside of arm 12. The arm 12 and/or the mounting element 16 may be of resilient plastics of resilient metal which enables stud 46 to enter and leave the pockets. Alternatively the arm 12 and mounting element 16 may be yieldably connected by providing a resilient spring 54. Arm 12 may be strengthened by reinforcing ribs (Fig. 8, not shown), these ribs being covered by layer 28. An adaptor 58 (Fig. 13) for enabling the supporting device to be used with a handset neck of different crosssection is of plastics material and is of symmetrical form except for a recess 60 which provides clearance for the swaged inner end of a pivot pin 14. The camming web 34 slides into a slot 66 so that web edge 36 engages the neck surface. Arch portions 68 act to stabilize the adaptor 58 relative to the neck. In utilizing either arrangement the user swings the arm 12 outwards and sideways and rests it upon his shoulder. The weight of the handset may suffice to cause arm 12 to yield upwardly in which case the arm 12 and handset operate as jaws which grip the user's shoulder.
Patent GB-1139143-A (GB)
Title: Magnetic devices including a contact unit
IPC: H01H36/00
Filed: 1966-09-26
Abstract: 1,139,143. Magnetic switches. G. B. JEFFERY. 9 Oct., 1967 [26 Sept., 1966], No. 42938/66. Heading H1N. A movable magnet switch such as that described in Specification 1,115,966, has its movable magnet member arranged so as to actuate magnetic contacts to their closed position and during subsequent movement, provide a reduced magnetic field to retain the contacts closed. In Fig. 1, the contact reeds 2 are not magnetized when the surface 9 of the magnet 3 is adjacent the reeds but are magnetized to close the contacts when passed by a magnet projection 7 or 8, in accordance with the direction of rotation of the disc magnet 3. The surface 4 of the disc 3 between projections 7 and 8 is sufficiently near to the reeds 2 to provide a contact holding flux. The contact reeds are enclosed in glass envelopes (not shown) and the magnet disc passes adjacent the reeds, and not merely the envelope thereof. A rotary switch having six reed contact units as shown may act as a three phase stepping switch.
Patent GB-1161443-A (GB)
Title: Improvements in Vacuum Type Circuit Interrupters
IPC: H01H33/662
Filed: 1967-09-21
Abstract: 1,161,443. Vacuum switches. GENERAL ELECTRIC CO. 21 Sept., 1967 [3 Oct., 1966], No. 43014/67. Heading H1N. The envelope of a vacuum switch is provided with a main shield 50 preventing deposition of metal particles on the insulating wall 11 and two pairs of auxiliary shields 54, 56 overlapping but spaced internally and externally of the ends of the main shield 50. The auxiliary shields prevent particles by-passing the main shield and also provide voltage grading capacitances, being connected to the metal end plates 12, 13 of the switch. An additional shield 58 protects the bellows 20. The contacts are constructed as described in Specification 1,161,442.
Patent GB-1220714-A (GB)
Title: Improvements in or relating to a method for the production of vinyl chloride copolymers
IPC: C08F214/06
Filed: 1968-09-10
Abstract: 1,220,714. Vinyl chloride-olefin copolymers. TENNECO CHEMICALS Inc. 10 Sept., 1968 [15 Sept., 1967], No. 43030/68. Heading C3P. Vinyl chloride is polymerized at 30-70‹ C. in the presence of 0À1-5% by wt. of total monomers of a C 10 -C 22  alpha-olefin added prior to the start of the reaction. Suspension or emulsion technique is used. The addition of the olefin causes polymerization to proceed at a uniform rate.
Patent GB-1106049-A (GB)
Title: Bipolar electrolytic cell and use thereof
IPC: C25B9/17
Filed: 1965-10-11
Abstract: 1,106,049. Bi-polar electrodes. HOOKER CHEMICAL CORPORATION. Oct. 11, 1965, [Oct. 12, 1964], No.43090/65. Heading C7B. An electrolytic cell, particularly for producing alkali metal chlorates or perchlorates from brine or chlorate solutions, comprises a container 11 having therein at least one non-porous internally cooled bi-polar electrode 12 interposed between two terminal monopolar electrodes Fig. 1 (not shown) connected to a D. C. source. Each bipolar electrode may have an anode 22 of Pt coated over Ti or Ta backing 23, and a cathode 24 the same or of Cu, Ni, steel, Ag or alloys thereof, and may be held rigidly spaced from one another by spacers 14. Internal ribs 26 of Ti, Ta, Cu, Ni, Ag, steel or alloys thereof, may be positioned to provide support, electrical connection and to channel cooling liquid e. g. water throughout the interior of each bi-polar electrode, the liquid circulating from inlet 28 to outlet 30. Using such internally cooled electrodes, the electrolyte temperature may be maintained in the range 20-80C. For producing sodium perchlorate, an electrolyte containing 650 g/1 sodium chlorate and 1 g/l sodium dichromate may be fed to a cell assembly composed of 45 bi-polar cells. Spent electrolyte passed from the evaporator and crystallizer, after removal of sodium perchlorate crystals, may be recycled to the cell assembly. The cell may be also applied for producing per-iodic acid and regenerating chromic acid.
Patent GB-1007555-A (GB)
Title: Semiconductor material
IPC: C30B25/14
Filed: 1961-12-04
Abstract: A single crystal silicon semi-conductor having layers of single crystal silicon separated by a transition region is formed by heating the crystal, which has at least one surface conforming to Miller indices 110, 111 or 211, to at least 1150  DEG C. in a vapour including hydrogen, a chloride of silicon, and active impurities which impart the required conductivity to the silicon deposited on the growth plane.  In an example a p-type Si crystal is etched in KOH, heated to 1150  DEG C. in a quartz reaction chamber in an atmosphere of SiHCl3 or SiCl4 and PCl3 and H2 to form a P-N type semi-conductor. Other active impurities which may be used are Sb, As, B, Ga, Al and In.ALSO:A single crystal silicon semi-conductor having layers of single crystal silicon separated by a transition region is formed by heating the crystal, which has at least one surface conforming to Miller indices 110, 111 or 211, to at least 1150 DEG C. in a vapour including hydrogen, a chloride of silicon, and active impurities which impart the required conductivity to the silicon deposited on the growth plane.  In an example a P-type Si crystal is etched in KOH, heated to 1150 DEG  C. in a quartz reaction chamber in an atmosphere of SiHCl3 or SiCl4 and PCl3 and H2 to form a P-N type semi-conductor.  Other active impurities which may be used are Sb, As, B, Ga, Al and In.
Patent GB-1318385-A (GB)
Title: Spring anchorage for the leaf springs of vehicles
IPC: B60G11/12
Filed: 1970-09-10
Abstract: 1318385 Leaf spring shackles KLOCKNERHUMBOLDT-DEUTZ AG 10 Sept 1970 [11 Sept 1969] 43359/70 Heading F2S The eye 10 of a leaf spring in a vehicle suspension is supported on a pin 11 whose ends are inserted in eyes 14 in a shackle 8 which is, in turn, supported, by eye 7, on a pin 4 whose ends are inserted in eyes 3 in a bracket 1 which is secured to the vehicle frame 2. The ends of the pins are required to be rotatably fast in bushes 5, 12 in the eyes 3 and 14, and located axially by end members 9, 15. The bushes 5, 12 are supported in needle bearings 13, and may be a press-fit on the pins, or have a splined connection (Fig. 3, not shown).
Patent GB-1271670-A (GB)
Title: Benzene diazonium compounds and diazotype material containing the same
IPC: G03C1/54
Filed: 1969-09-02
Abstract: 1,271,670. Diazonium compounds. KALLE A.G. 2 Sept., 1969 [3 Sept., 1968], No. 43403/69. Heading C2C. [Also in Division G2] The invention comprises diazonium compounds of the formula in which R 1  and R 2 , which may be the same or different, denote alkyl, aralkyl or cycloalkyl groups or form a heterocyclic ring with the nitrogen atom to which they are linked, R 3  denotes a halogenalkyl group containing at least one fluorine atom, R 4  denotes hydrogen or halogen or an alkyl, alkoxy or dialkylamino group and X denotes an anion The products are obtainable from 2,5-dichloronitrobenzene by processes generally known and not described in detail but including the etherification of a substituted o-nitrophenol by addition of a 1,1- difluoroalkene-(1). Specific products are listed. The compounds are useful in diazotype photgraphy (see Division G2). The preparation of the following intermediates is described. 4 - Dimethylamino - 2 - hydroxy - 5 - (4 - chlorophenoxy) nitrobenzene is obtainable by heating 4 - dimethylamino - 2 - chloro - 5 - (4 - chlorophenoxy) nitrobenzene with potassium hydroxide in glycol monomethyl ether. 4 - Dimethylamino - 2 - (1,1 - difluoro - 2,2- dichloroethoxy) - 5 - (4 - chlorophenoxy) nitrobenzene is obtainable by heating the intermediate specified above with 1,1-difluoro-2,2- dichloroethylene in the presence of potassium hydroxide. Analogous compounds are obtainable from 1,1,2-trifluoro-2-chloroethylene and tetrafluoroethylene.
Patent GB-1305748-A (GB)
IPC: H01B1/08
Filed: 1970-09-10
Abstract: 1305748 Electrodes for semi-conductor devices DANFOSS AS 10 Sept 1970 [20 Sept 1969] 43409/70 Heading H1K An electrode 3 for a semiconductor device is formed by mixing silver, preferably in paste form, with a readily-oxidizable metal and an activator which, when the mixture is applied to the device and fused, reduces the oxide of the readily-oxidizable metal, such reduction occuring at a temperature lower than that at which fusion is carried out. The readily-oxidizable metal, which may be zinc, lead, tin, indium, aluminium or 25% indium/75% lead, serves to suppress the formation of a deleterious oxide blocking layer during electrode fusion, while the activator, e.g. titanium hydride or zirconium hydride, reduces the oxide skin on the readilyoxidizable metal, thus facilitating the process. In the embodiment the semi-conductor device is BaTiO 3  positive - temperature - coefficient resistor 1. The readily-oxidizable metal and the activator are both preferably in powdered, e.g. colloidal, form when mixed with the silver paste. Preferred compositions and fusion parameters are specified. Finally a wire 4 is soldered to the electrode 3.
Patent GB-1397728-A (GB)
Title: Disperse dyes
IPC: C09B5/02
Filed: 1971-09-17
Abstract: 1397728 Disperse dyes YORKSHIRE CHEMICALS Ltd 14 Sept 1972 [17 Sept 1971] 43412/71 Heading C4P The invention comprises disperse dyes of Formulae I, II, and III  where R is CH 3  or C 2 H 5  and rings A and B are optionally substituted but not by CO 2 H or SO 3 H groups. The dyes may be prepared by reacting 1 mole of a compound of formula with 1 mole of an anthranilic acid of the general formula  when both R<SP>2</SP>s are H or with 2 moles of the anthranilic acid.when one R<SP>2</SP> is H and the other -NHCOCH 2 R<SP>1</SP>. The anthraquinone compound of Formula IV may be prepared in situ from the corresponding aminoanthraquinone and propionic- or butyric acid anhydride. The reaction takes place at 50-250‹ C. preferably in a melt with the anhydride and a dehydrating agent. The dyes may be used for dyeing or printing hydrophobic fibres, e.g. of cellulose acetate, polyamides, polyacrylonitrile and polyesters in yellow, orange, red and violet shades.
Patent GB-1504268-A (GB)
Title: Drain and overflow fitting including a bowden control cable for a basin sink bath or like article of sanitary equipment
IPC: E03C1/232
Filed: 1976-10-20
Abstract: The discharge and overflow fitting has an overflow housing (1), a telescopic overflow pipe (2) and a valve housing (3). A closure stopper (7) is arranged in the valve housing (3). The closure stopper (7) is opened and closed by means of a Bowden cable (23) which can be actuated via a turning rosette (28). The upper end of the core of the Bowden cable (23) is fastened on a rack (24) which is slidably mounted in or on the overflow housing (1). The rack (24) is in engagement with a pinion (26) which is fastened on a shaft (27) on which the turning rosette (28) is fixed. The pinion (26), via which the core of the Bowden cable (23) is adjusted in conjunction with the rack (24), is actuated via the turning rosette (28) and the shaft (27). The fitting permits changes in length by displacing the pipes (4, 5) without having to re-adjust the Bowden cable (23). <IMAGE>
Patent GB-1382695-A (GB)
Title: Differential amplifier
IPC: H03F3/45
Filed: 1972-09-20
Abstract: 1382695 Transistor amplifying circuits; CRT deflection circuits LITTON INDUSTRIES Inc 20 Sept 1972 [29 Sept 1971] 43629/72 Heading H3T  In a multistage differential amplifier for controlling the currents through two deflection coils of a CRT, a correction signal dependent upon the lesser of the currents in the coils is generated and compared with a reference voltage to produce a control signal which is applied to one of the amplifier stages so as to cause flow of current through each of the deflection coils having a predetermined minimum value determined by the reference voltage. Deflection signals are applied at terminals 10, 11 to a directcoupled amplifier to drive a first stage comprising transistors Q1, Q2 having as common emitter impedance current source 12. The first stage drives a second stage comprising transistors Q3, Q4 having as common emitter impedance the comparator circuit 17. The second stage drives an output stage comprising transistors Q5, Q6 in whose common emitter circuit is Zener diode 21 in series with resistor R7. The deflection coils 13, 14 are driven via diodes D1, D2, respectively and the currents in them produce corresponding voltages across resistors R3, R4 respectively: overall feedback is applied by means of resistors R5, R6. At the common point A of the diodes D6, D7 there occurs a voltage dependent upon the lesser of the currents in the coils 13, 14 and this is applied to one input of the comparator 17, which produces the difference between it and the reference voltage applied to terminal 16. The output from comparator 17 so biases the the transistor Q3, Q4 and thence the output transistors Q5, Q6 that the latter are biased in class B for small signals, but in class A for larger signals (Fig. 2, not shown). When the emitter potential of transistors Q5, Q6 reaches a predetermined value, Zener diode 21 becomes conductive and the resultant voltage across resistor R7 biases transistors Q8, Q9 conductive thereby shunting inductors 13, 14.
Patent GB-934348-A (GB)
Title: Improvements in and relating to the manufacture of beverages and the like
Inventor: GLUCKSTEIN LEONARD
IPC: B30B9/12
Filed: 1959-12-23
Abstract: A citrus fruit product, e.g. orange juice, is produced by comminuting whole fruit by a cutting action by which fruit sacs and oil cells are ruptured, separating the liquids and solids produced as a result of the comminution by subjecting the solids and liquids to gradually increasing pressures, free from high or pulsating pressures, and adding sugar syrup to the liquids obtained by the separation; the separation may be made by a screw feed member moving within a screen wherein the effective space between them progressively decreases along the length of the member, Fig. 4 (not shown: see Group I), by a centrifugal type separator, or by a pair of converging conveyer belts.  The fruits are first pre-heated by water at 170 DEG  F. for a short time to produce a temperature of the skin of the fruit on comminution of about 80 DEG  F.; the comminution, which should be effected whilst maintaining the comminuted fruit out of contact with air, as by immersion in liquid or in an atmosphere of carbon dioxide or nitrogen, may be effected by rotary cutting discs employing the apparatus illustrated in Figs. 1 to 3 (not shown), forming an embodiment of the invention described and claimed in Specification 934,347, or by hammer milling.  A proportion of sugar syrup may be added before, during or shortly after the comminution.
Patent GB-1399704-A (GB)
Title: Helicopter rotor blade support mountings
IPC: B64C27/32
Filed: 1972-09-21
Abstract: 1399704 Helicopter rotor MESSERSCHMITT-BOLKOW-BLOHM GmbH 21 Sept 1972 [12 Oct 1971] 43752/72 Heading B7W A helicopter rotor comprises a hub 1 and blades 8 interconnected by laminated ties 11 which are attached to a central body 15 on the hub having a peripheral band 20. Each blade is fixed by a pin 24 in an eye 25 of a sleeve 7 carried by roller bearings 4 and 6 in a sleeve 4 on the hub. Each tie 11 is an endless band around a pin 13 carried in an eye 14 in a member 9 bearing on an abutment 10 on the sleeve 7 and around a pin 16 in an eye 17 in the central body 15. The peripheral band 20, of fibrereinforced plastics material or of wire, prevents the body coming apart in the event of a breakage, although resultant rotor imbalance gives warning of failure; the band is protected by a further band of elastomer. The body 15 has peripheral axial recesses 22, Fig. 3, which ensure that any rupture such as 23 will run to a recess, so that there are no sharp edges to damage the band 20. Each eye 25 of a shank 7 is surrounded by a rim 26 secured by a sleeve 27, and is also provided with axially-extending recesses (28), Fig. 4 (not shown), to prevent damage to the rims 26.