baber/WOPTO huggingface dataset:
Patent GB-1069533-A (GB)
Title: 1-fluoroalkyl-2-pyrazoline-5- one colour couplers
Inventor: EYNDE HECTOR ALFONS VAN DEN
IPC: G03C7/384
Filed: 1964-07-24
Abstract: The invention comprises 2-pyrazoline-5-one compounds of the following general formula or bis (2-pyrazoline-5-one therefrom by linking the 2-pyrazoline-5-one nuclei in the 4-position by means of a -CH2-group <FORM:1069533/C2/1> wherein X represents a hydrogen or fluorine atom, R represents a hydrogen atom, an alkyl radical or an aryl radical, n is a positive integer from 1 to 10 inclusive and R1 represents an alkyl, aryl, -NH- aryl, -NHCO- aryl, -NHCO- alkyl, -NHCONH- alkyl or -NHCONH- aryl radical, which radicals may be further substituted and may contain a radical rendering the molecule fast to diffusion in an hydrophilic colloid medium.  The compounds wherein R1 is alkyl or aryl are prepared by condensation of the appropriate hydrazine with an appropriate keto compound of the acetoacetic acid type.  The compounds wherein R1 has the other meanings are prepared by condensation of the appropriate 1-fluoralkyl-3-amino - 2 - pyrazoline - 5 - one with an appropriate acid chloride, acid anhydride or isocyanate. The 1-fluoralkyl-3-amino-2-pyrazoline-5-one is prepared by condensation of a fluoroalkyl hydrazine with ethyl b -ethoxy-b -imino-propionate.  o - Hexadecyloxy - benzoic acid is prepared by reacting hexadecyl bromide with salicylaldehyde to give o-hexadecyloxy-benzaldehyde which is oxidized with KMnO4. 3-Sulpho-6-hexadecyloxybenzoi acid, 3 - chlorosulphonyl - 6-hexadecyloxybenzoic acid, 3 - fluorosulphonyl-6 - hexadecyloxybenzoic acid and 3 - fluorosulphonyl - 6 - hexadecyloxybenzoyl chloride are prepared by method analogous to those described in Specification 1,039,965.  p - Hexadecylthio - benzoic acid is prepared by reacting hexadecyl bromide with p-mer-captobenzoic acid.  On oxidation with H2O2 p-hexadecylsulphonyl-benzoic acid is formed which is reacted with thionyl chloride to give p-hexadecylsulphonyl-benzoyl chloride. p-Hexadecylsulphonylphenyl isocyanate is prepared by reacting p-hexadecylsulphonyl-aniline with phosgene.
Patent GB-486585-A (GB)
Title: Improvements in and relating to air conditioning machines
IPC: F24F8/133
Filed: 1936-11-02
Abstract: 486,585. Disinfecting air. DAWSON, W. Nov. 2, 1936, No. 29747. [Class 81 (i)] [Also in Group XII] Air-purifying apparatus comprises a container having a fan 6 drawing air upwardly through an inlet 9, with a baffle 7 directing it on to a preferably liquid cleansing agent, e.g. a perfumed viscous disinfectant, in the lower part of the container which has one or more vertical partitions 2 shown as cylindrical and apertured or terminating just above the surface of the agent to provide an air passage to an outlet 12 in the container wall. One or more upwardly extending partitions 10a may also be provided and vanes 4 may impart a circular motion to the air causing the disinfectant to splash. Or a mechanical stirrer may be employed. The container and partitions may be formed of two intor-engaging parts A, 13. In a modification a second fan draws in air through an upper aperture for introduction. into the other air passage at a point intermediate of its length. The apparatus may be combined with an electric light chandelier or heating appliance.
Patent GB-466254-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J13/38
Filed: 1936-11-02
Abstract: 466,254. Metallic-vapour apparatus. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 2, 1936, No. 29772. Convention date, Nov. 1, 1935. Drawings to Specification. [Class 39 (i)] The starting electrode for pool-type discharge devices of the kind in which the starting electrode is permanently in contact with the cathode pool, comprises finely divided particles of boron carbide dispersed through and bonded in a fired ceramic insulating material. The binding material may be feldspar, talc or clay or combinations of these, and other insulating materials such as quartz and alumina may be added. In the preferred method of manufacture a mixture of carbide and clay is suspended in water and thoroughly mixed in a ball mill after which it is dried to a plastic condition and extruded in the form of rods which are ground or machined to the required shape, and then fired for half an hour to a temperature of about 900-1100‹ C. The proportion of clay is at least 10 per cent.
Patent GB-305284-A (GB)
Title: Improvements in or relating to electrical coupling circuits for transmitting voice and like complex-frequency currents
IPC: H01F19/06
Filed: 1927-11-07
Abstract: 305,284. Beatty, W. E. Nov. 7,1927. Transformers.-In coupling a line circuit by a transformer 12 to a secondary circuit having a capacity reactance (e.g. the grid circuit of a thermionic valve 13) a flat transmission characteristic over a wide band of frequencies (say from 20 cycles to 31000 cycles) is obtained by arranging that the leakage inductance of the transformer resonates with the said capacity near the upper limit of the frequency band, and by connecting resistances R1, R2 across both the primary and secondary coils. The resistances R1 R2 are preferably so proportioned with respect to the leakage reactance at the resonant frequency that the impedance, measured at the input side, of the primary winding and its shunt resistance, is equal to the line impedance at frequencies in the lower portion of the range. This matching of the impedance gives at the lower frequencies a step-up in voltage equal to half the turns ratio of the transformer; and it is found that by making the step-up of the same value at the upper resonant frequency a substantially flat characteristic is secured throughout the intermediate range. The Specification includes a mathematical analysis of the problem on these lines; and for a typical case having a given line impedance, a given transformer ratio, and a given leakage inductance, the values of R1 and R2 are cal culated. The closed transformer core may be of E and I-shaped laminations of a 78.5 per cent nickel-iron alloy. The primary and secondary coils are interleaved to cut down leakage. The output transformer in the plate circuit of the repeater valve may have a solid toroidal core of the same alloy; it has no resistance shunts, and is connected as a step-down transformer. A third winding traversed by direct current may be used to neutralize the flux due to the plate direct current in the primary coil.
Patent GB-314737-A (GB)
Title: Improvements in and relating to paper clips
IPC: B42F1/08
Filed: 1928-10-15
Abstract: 314,737. Siegfried, W. Oct. 15, 1928. Clips, spring-wire.-Paper clips with four limbs a - - extending substantially parallel, have a straight top e lying close to the ends f, g of the limbs d, a. The inner and outer loops at the opposite end may be angular.
Patent GB-1091847-A (GB)
Title: Improvements in or relating to the manufacture of valves
IPC: F01L3/14
Filed: 1965-07-14
Abstract: 1,091,847. Making valves. TEVES-THOMPSON & CO. G.m.b.H. July 14, 1965 [Oct. 6, 1964], No. 29833/65. Heading B3A. In the manufacture of sodium-filled poppetvalves, the completed valve is heat treated at temperatures above the boiling point of the sodium enclosed therein, preferably in the range 1000 to 1050 C.
Patent GB-1530559-A (GB)
Title: Moulding compositions comprising thermosetting resins and carbohydrates
IPC: C08L61/34
Filed: 1977-07-15
Abstract: 1530559 Novolak/starch/aminoplast moulding compositions CPC INTERNATIONAL Inc 15 July 1977 [22 July 1976] 29856/77 Heading C3R A solid moulding composition comprises (1) a phenol-formaldehyde novolak, (2) a starch, and (3) a starch-compatible aminoplast being a condensation product of urea or melamine with a C 1-3  aldehyde.
Patent GB-711983-A (GB)
Title: Improvements in and relating to electromagnetic switches
Inventor: COSIER JOHN EDWARD GEORGE
IPC: H01H50/20
Filed: 1951-12-20
Abstract: 711,983. Electromagnetic switches. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Dec. 20,1951, No. 29862/51. Class 38(5) A switch enabling a high-frequency generator to serve one or other of two positions at will, comprises a hollow water-cooled copper arm 3 pivoted by means of a conducting bellows 6 to a rigid copper union 5 and carrying two laminated contacts 15 adapted to engage respectively fixed contacts 2 on either side according to which of two electromagnets 4 is energized. Preferably there are two arms 3 arranged one behind the other and the armatures 19 of the electromagnets are connected to the arms 3 by toggles 20, 21, and the cooling water flows down one arm 3, through a flexible rubber tube connected to a union 10 and up through the other arm 3. The fixed contacts 2 are also cooled by water flowing through tubes 17. Aluminium screens 27 screen the solenoids 4 from the rest of the switch and a projection 28 on each toggle mechanism co-operates with a lug 18 to earth that outlet of the switch not in use.
Patent GB-409027-A (GB)
Title: An improved method of and means for transmitting indications to a distance
Filed: 1932-10-26
Abstract: 409,027. Electric signalling systems. HOLMES, E. L., 25, Ranelagh Gardens, Ilford, Essex, HUGHES & SON, Ltd., H., 59, Fenchurch Street, London, and HUGHES, A. J., Hainault Hall, Chigwell Row, Essex. Oct. 26, 1932, No. 29971. [Class 40 (i).] In a system for transmitting indications to a distance, the transmitter comprises electrodes relatively rotatable in an electrolyte and arranged to provide two circuits through the electrolyte, the resistance of one circuit being maintained constant while that of the other circuit is varied in accordance with the signals to be transmitted. The transmitter is supplied with alternating current, and the output is rectified so as to operate a differential indicating instrument. As shown in Figs. 1 and 2, the system comprises a glass bowl a having a cover b fitting with a ground-in joint c rendered leakproof by sealing material d. The cover b has a neck e which accommodates a bottle f fitted with a vented stopper i. The bottom k of the bottle has a hole l through which fluid may flow without transmitting wave motion to the liquid in the bowl a. Magnets b<1>, b<1> are supported in the liquid by a pivoted frame x, y which also carries arc-shaped wires c<1>, d<1>. The wire c<1> acts as a movable electrode cooperating with fixed electrodes p, q, the arrangement being such that upon movement of the magnets relatively to the bowl a, as in a compass, the resistance of the electrolyte between the electrode c<1> and one of the electrodes p, q remains constant while the other resistance varies in accordance with the movement. The input circuits to the electrolyte are supplied by an alternating current generator g<1> and the output circuits from the electrodes p, q include rectifying equipments 11, 18 which supply the differential indicating instrument f<1>. Follow-up mechanism may be associated with the bowl a and the apparatus used as a master compass.
Patent GB-1360494-A (GB)
Title: Apparatus for selectively supplying materials having different characteristics to an outlet
IPC: B29C48/06
Filed: 1971-06-25
Abstract: 1360494 Pneumatic conveyers J GROLLET 25 June 1971 29986/71 Heading B8A [Also in Divisions F2 and B5] Material of different characteristics is stored in respective containers 14 1 -14 n  according to the individual characteristic, e.g. different colour plastics material, each container being connected via pipes 25 1 -25 n  to a selector device 12 coupled by a single pipe 26 to for example an extruding machine 10. The selector device 12 comprises a plate 50 with a series of apertures 51 to which respective ones of the pipes 25 1 -25 n  are coupled. A toothed wheel 54 is axially slidably mounted in the plate 50 and mounts one end of a tube 53 rotatably supported for axial movement at its other end in an adaptor plate 67 to which the pipe 26 is connected. A drive motor 62 is adapted to rotate the wheel 54 and an actuator 80 is adapted to move said wheel 54 axially, such that on selection of an appropriate material for the extrudate 7 the wheel 54 is moved away from the plate and is then rotated by the motor 62 until the pipe 53 is in alignment with the appropriate aperture 51 whereupon the wheel is returned to its position against the plate 50. Movement of the materials along the appropriate pipes is achieved by a pump 30 mounted above the extruder. The outlet end of the pipe 26 discharges the material into a hopper 31 movable from a position over the inlet to the extruder to a position over a container 39 into which material can be discharged during periods of change over from one material to another. A compartment 44 in the hopper contains material of different characteristics to either the initial or new material to be supplied to the extruder and is emptied during the return movement of the hopper to provide a clear indication of the change over. The apparatus is said to enable a wire coating extruding machine to operate continuously. A control system, Fig. 6 (not shown), for the selector device and the hopper is described.
Patent GB-1532622-A (GB)
Title: Composite instrument usable principally as a protractor for map reading and cartography
IPC: G01B3/56
Filed: 1975-10-02
Abstract: 1532622 Protractors C A WILLIS 2 Oct 1975 [5 July 1974] 30018/74 Heading G1X A protractor, principally for use with maps, comprises a transparent or translucent plate-like member having degree markings, one or more grid squares and an elongate aperture. The three grid squares are equal in size to those commonly used on maps and are positioned with the base and top lines of the centre square aligned with the base lines of the other two. Inch and centimetre scales are along opposed sides of the aperture and compass markings supplement the degree markings. A hole (not shown), at the centre may be provided for use in indicating the sun's shadow or as a clinometer.
Patent GB-800447-A (GB)
Title: Propylene polymerization
IPC: C08F110/06
Filed: 1956-10-03
Abstract: A catalyst suitable for polymerizing propylene is made by mixing, in an inert diluent at a temperature of 25 DEG  to 50 DEG  C. for 1/4 to 1 hour, compounds of the formula AlR1R11R111, AlR1 R11X and TiCl4, where R1, R11 and R111 are C2-C4 alkyl groups and X is halogen and the molar ratio of aluminium to titanium is in the range 1 : 1 to 12 : 1 and the molar ratio of the aluminium trialkyl compound to the aluminium dialkyl compound is in the range of 1 : 19 to 19 : 1. Specified aluminium trialkyls are aluminium triethyl, tripropyl, tributyl, diethyl propyl, and ethyl dibutyl.  The aluminium dialkyl halide may be aluminium diethyl chloride, bromide, or iodide, aluminium dibutyl chloride, or aluminium ethyl butyl chloride. Diluents mentioned are pentane, hexane, heptane, octane, nonane and decane.ALSO:Propylene is polymerized at a pressure in the range of 100 to 2000 lbs./sq. inch in the presence of a catalyst obtained by mixing compounds of the formula AlR1R11R111, AlR1R11X an TiCl4, where R1, R11 and R111 are C2-C4 alkyl groups and X is halogen and the molar ratio of the aluminium trialkyl compound to the aluminium dialkyl halide compound is in the range of 1:19 to 19:1 and the molar ratio of aluminium to titanium is in the range 1:1 to 12:1.  The polymerization is preferably effected in an inert liquid diluent which is generally the same diluent as is employed in the preparation of the catalyst.  Specified aluminium trialkyls are aluminium triethyl, tripropyl, tributyl, diethyl propyl, and ethyl dibutyl. The aluminium dialkyl halide may be aluminium diethyl chloride, bromide, or iodide, aluminium dibutyl chloride, or aluminium ethyl butyl chloride.  Diluents mentioned are pentane, hexane, heptane, octane, nonane, and decane.  The catalyst is generally made by mixing the three compounds in a diluent at a temperature of 25 DEG  to 50 DEG  C. for 0.25 to 1 hour. After the polymerization is complete the catalyst is deactivated by treating with an alcohol such as methyl, ethyl, isopropyl, or n-butyl.  The polypropylene has an intrinsic viscosity within the range of 0.2 to 6.0 and may be prepared in two forms, i.e. amorphous or crystalline.  The formation of the amorphous polymer is promoted by (1) employing high molar ratios of aluminium trialkyl to dialkyl aluminium halide, (2) employing relatively low molar ratios of aluminium to titanium and (3) low polymerization temperatures.  The formation of the crystalline polymer is promoted by low molar ratios of (1), high molar ratios of (2), and a high polymerization temperature.  The polymerization may be effected in a reaction vessel constructed of alloy steel essentially free of the elements nickel, lead, platinum, palladium, or cobalt.  The polymer may be used as a lubricating oil additive, in coating compositions, and in the manufacture of extruded sheets, tubes, and moulded articles.
Patent GB-305707-A (GB)
Title: Improvements in and relating to flame controlled oil burners, oil burning furnaces and apparatus connected therewith
IPC: F23N5/00
Filed: 1927-11-10
Abstract: 305,707. Rose, S. A. M. Nov. 10, 1927. Light radiations, controlling apparatus by.-On the accidental extinction of the burners of oilburning furnaces, a selenium or photo-electric cell operates after a predetermined period through one or more electrical relays acoustic or optical signals, valves to shut off the oil supply, and means for stopping other furnace apparatus. Fig. 1 shows an oil-burning furnace in which the light from the burner flame g passes through glass or mica heat-resisting shields h arranged in an opaque tube e attached to the furnace door b and impinges on a selenium cell f arranged in the circuit of a relay i and battery j. The movable arm i<1> of the relay i is adapted to engage contacts i<2>, i<3> and complete the circuit from a battery l through one of the two windings of a polarized relay k. When the burner is alight, the arm i<1> rests against the contact i<2> except during momentary obscurations of the flame by smoke clouds, when the arm vibrates without engaging the contact i<3>. When the burner is extinguished the arm i<1> moves into engagement with the contact i<3>, thereby causing the movable arm k<1> of the relay k to engage a contact k<3> and complete the circuit from a battery m through an electromagnet n. The core n<1> of the electromagnet then rises slowly against the resistance of an oil-filled dash-pot o and a double contact arm n<2> carried by the core n' bridges in turn contacts 1 - - 6. The contacts 1 - - 6 may be in the circuits respectively of a single stroke bell, a permanently ringing bell, an indicating-lamp, an electromagnetically-operated valve in the fuel pipe d, electrically-operated valves on the fuel tank, and switch-operating means for the fan motor. A modification of the apparatus is described in which the current for operating the relays, valves &c. is obtained from potential dividers connected across D.C. mains. The first Provisional Specification states that a light-regulating shutter may be interposed in the path of the luminous rays falling on the selenium cell.
Patent GB-450950-A (GB)
Title: Type for imitating printed text and the like
IPC: G09F7/02
Filed: 1934-10-22
Abstract: 450,950. Signs. ADVERTISING SERVICE CORPORATION AKTIEBOLAGET, 4B, Kungsgatan, Stockholm.-(Assignees of Schaub, A., and AndrÞn, E. ; Stockholm) Oct. 22, 1934, Nos. 30191 and 30192. Void [Abridged as open to inspection under Sect. 91 of the Acts, April 23, 1935]. [Class 3 (ii)] Signs, notices, and the like are built up of strips of thin material each bearing a character which is so located with respect to the edges of the strip that when assembled, the strips simulate a single printed text. The strips may be rectangular or trapezoidal, and adjacent strips may have progressively decreasing dimensions as shown in the Figure. When italic characters are used, the edges of the strips lie parallel with the principal axis of the characters.
Patent GB-1240141-A (GB)
Title: Heat exchanger
Inventor: WETCH JOSEPH RONALD
IPC: F28F9/04
Filed: 1968-06-25
Abstract: 1,240,141. Heating and cooling liquids in bulk; heat exchanger tubes. NORTH AMERICAN ROCKWELL CORP. 25 June, 1968 [26 June, 1967], No. 30301/68. Heading F4S. Heat exchanger tube banks, e.g. 70, 72, 74, Fig. 4, extending between headers 44, 60, Fig. 1, and carrying a fluid under pressure, are each made from two sheets of plastics film material (such as P.V.C.) seamed together at intervals (e.g. along spaced-apart parallel lines 88, 90, 92, Fig. 3) to form the tubes 56 of the bank, each tube having anti-buoyancy means therein adapted in use when the tube banks are immersed in a fluid in a tank 16, to provide neutral buoyancy. The anti-buoyancy means may comprise wires 76, 78, 80 inserted in selected tubes of each bank and connected at their ends to the headers. The tank shown includes inlet and outlet chambers 32, 62 respectively for the tube-side fluid, and the headers 44, 60 which may be of flexible material and in the form of multiple header units (Fig. 2) interconnect these chambers with the tubes. Fluid flow through the tubes may be regulated by valves 52 in the header 44. In use, raw sea water on its way to a distillation plant is preheated as it gravitates through the tank 16 by fresh water passing out of the plant.
Patent GB-1113411-A (GB)
Title: Method and apparatus for rapidly establishing a current in a coil
Inventor: COUANAULT GEORGES
IPC: H02M3/10
Filed: 1965-07-16
Abstract: 1,113,411. Transistor switching circuits for inductive loads. SOCIETE ALSACIENNE DE CONSTRUCTIONS ATOMIQUES DE TELECOMMUNICATIONS ET D'ELECTRONIQUE " ALCATEL." 16 July. 1965 [17 July, 1964], No. 30330/65. Heading H3T. [Also in Division H2] Rapid energization of a coil is effected by connecting one end of the coil through a first switch to a potential source to provide the build-up of current and through a second switch to a lower potential to provide a maintaining current. The inductive load L, Fig. 9, is rapidly energized by applying voltages to AB and MN to render transistors Q 2 , Q 4  and Q 3  conductive. Transistor Q 3  applies a high voltage to inductor L to rapidly establish the energizing current therein after which it becomes non-conducting and the current is maintained through transistor Q 3  from a lower voltage source E 2 . The voltage for rendering Q 2  non-conductive may be derived from across a series resistor such as R (Fig. 5, not shown). Q 2  may be replaced by a semi-conductor rectifier fed from a capacitor so that when the capacitor has discharged into the inductor the voltage across the thyristor is insufficient to maintain conduction. The capacitor is recharged from the high-voltage source through a resistor or resonantly through an inductor (Figs. 11 and 13, not shown). Transistor Q 3  may also be replaced by a thyristor preferably having a turn-off electrode as well as a normal gate (Fig. 13, not shown). Where energization in either of two polarities is required, two similar circuits one comprising transistors complementary to the other may be connected across the load to operate alternatively (Fig. 14, not shown), or two similar circuits may be connected to oppositely poled windings (Fig. 16, not shown). It is also possible to utilize a permanent current source of one polarity and two sources of the opposite polarity connected in accordance with the invention (Figs. 15 and 17, not shown). In Fig. 9 a diode D 1  protects transistor Q 3  against over-voltage during energization and a Zener diode D 2  affords protection during de-energization.
Patent GB-804110-A (GB)
Title: Improvements in drilling bits
IPC: E21B10/54
Filed: 1953-11-03
Abstract: 804,110. Drilling-bits. FREEMAN, H. K. Jan. 21, 1955 [Nov. 3, 1953], No. 30374/53. Class 83 (3). An asymmetric, rotary drilling-bit comprises two legs c, d, having cutting faces of equal width which cut concentric, but discrete, paths f1, f2. The cutting edge may be straight, angular or arcuate and the shank b is of circular or polygonal section. The legs may be shaped so that they both make contact with the wall of the hole, or of the core. In modifications, the cutting faces are formed so that either no core is left, or a thin annular core is left between the paths of the faces.