baber/WOPTO huggingface dataset:
Patent GB-1041867-A (GB)
Title: Pentalane derivatives and their production
IPC: C07F7/18
Filed: 1964-10-16
Abstract: Pentalane (i.e. bicyclo-[3.3.0]-octane) is prepared by reacting trimethylsilylpentalane with sodium hydroxide.ALSO:The invention comprises silyl pentalanes of formula <FORM:1041867/C3/1> wherein each R represents a halogen, hydrocarbon, hydrocarbonoxy or carboxylic acyloxy radical.  These are prepared by reacting cyclooctadiene-1,5 with silanes HSiR3, wherein R is as defined above, in the presence of a free-radical generating catalyst.  It is not known whether the silyl substituent is on the 2- or the 3-position of the pentalane ring.  Suitable free radical catalysts are organic peroxides, electromagnetic radiation, e.g. g -rays and U.V. light. The halogen atoms of compounds containing a halosilyl group may be replaced by hydrocarbon, hydrocarbonoxy or acyloxy groups, e.g. by reaction with Grignard reagents, alcohols, phenols or acid anhydrides.  The examples describe the preparation of pentalanes wherein the substituents are (1), (6) and (7) trichlorosilyl, (2) methyldichlorosilyl, (3) trimethyl silyl, (4) triacetoxysilyl, and (5) phenyl-dichlorosilyl.  In (7) trichloro-cyclooctene-5 is also obtained. Uses.-In organosilicon resin compositions, anti-thixotropizing agents for organosilicon elastomers, preparing pentalane.
Patent GB-1017349-A (GB)
Title: Improvements in or relating to electric circuits including electromagnetic relays
Inventor: SMITH MICHAEL CHARLES
IPC: H03K5/04
Filed: 1962-11-09
Abstract: 1,017,349. Transistor relay circuits. GENERAL ELECTRIC CO. Ltd. Oct. 11, 1963 [Nov. 9, 1962], No. 42420/62. Heading H3T. A relay is controlled by a circuit comprising a transistor connected in series or parallel therewith and change-over of the relay at the end of the control signal is delayed by a capacitor connected between base and collector of the transistor. In Fig. 1 the application of a negative input signal at terminal 2 causes the transistor to conduct whereby a relay 10 is operated and a capacitor 13 is discharged via a diode 16. When the signal is removed the capacitor re-charges through a path including a diode 15 and the base of the transistor, maintaining the transistor conducting for a short period and so delaying the release of the relay. The flow of charging current from resistor 2 may be prevented if the resistor 5 is replaced by a diode. In Fig. 2 a negative input signal at terminal 22 causes transistor 24 to conduct whereby a relay 30 is operated and a capacitor 38 is discharged. When the signal is removed capacitor 38 re-charges via the base of a transistor 33 causing transistor 33 to conduct and maintain the relay operated for a short period. In both circuits the relay may alternatively be connected across the transistor or transistors so that their operation instead of relase is delayed.  Reference has been directed by the Comptroller to Specification 930,115.
Patent GB-982689-A (GB)
Title: Tube drawing
Inventor: WILSON RICHMOND W
IPC: C03B17/04
Filed: 1962-11-09
Abstract: In a method for continuously drawing glass tubing from a body of molten glass, the glass is drawn through a cooled tubular die the entrance end of which is surrounded by a vacuum chamber. Molten glass 12 flows through an outlet 13 in a forehearth 11 over a tubular mandrel 15 including a bore-forming bell 18, and passes through a hole in a graphite or treated metal plate 21 as a molten stream of glass 19.  A die 22 is cooled by directing air on to its outer surface through openings 51 in annular tubes 50. Suction is applied to two chambers 23, 33 which connect with the top and bottom respectively of the die 22 and as the molten glass <PICT:0982689/C1/1> <PICT:0982689/C1/2> tube 19 passes through the die 22 it is expanded by the suction into contact with the upper walls of the die 22 which rapidly cool the glass tube 19 causing it to contract slightly away from the walls.  On reaching a two-piece plate 41, split at 36, the glass tube 19 laterally displaces the two halves of plate 41 and then passes through drawing rollers 20. In another embodiment, Fig. 3, a vacuum chamber 62 surrounds a die 60 which is provided with spiral slots 61. For producing tubing of other than round cross-section shape, e.g. oval, dies may be used. The mandrel 15 and plate 21 may be offset from the axis of the die 22 to produce tubing with opposite wall areas of different thickness.  The invention may also be used in apparatus for the upward drawing of tubing.  U.S.A. Specifications 2,009,793 and 2,085,245 are referred to.
Patent GB-425523-A (GB)
Abstract: 425,523. Fuel pumps. BOUTILLON, H., 7, Rue de St. Cloud, Suresnes, Seine, France, July 31, 1934, No. 22321. Convention date. Aug. 1, 1933. [Class 102 (i)] [See also Groups XI and XXIX] Liquid fuel is supplied to a burner through an orifice which is regulated by a member sensitive to variations in the viscosity of the fuel. In the form shown, a fan 7, driven by a constant - speed electric motor 6 supplies air to a flared burner nozzle 10 and thereby induces a flow of liquid fuel through a nozzle 11 from a compartment 16 in a tank 14 to which the fuel is fed at a constant rate by a pump 8, also driven by the motor 6. The compartment 16 communicates with a compartment 17 through orifices 18, 19, the orifice 18 being below the fuel level and allowing the excess fuel to be returned past a float valve 20 to the suction side of the pump 8. The height to which the fuel rises in the compartment 16 will therefore vary in proportion to the viscosity of the fuel and, by regulating an orifice 24 having substantially parabolic sides by a valve 23 operated by a float 22, the flow of the fuel to the nozzle 11 may be rendered constant. The nozzle 11 may be rotated so as to improve the atomization of the fuel, In a modification, the fuel overflows from the tank 14 through an adjustable annular inlet to a compartment containing a small cylindrical vessel operating a rod carrying two valves, one valve placing the pump suction pipe in communication with the cylindrical vessel and the other with the main supply tank.
Patent GB-1437008-A (GB)
Title: Magnetic transducers
IPC: G11B5/03
Filed: 1973-09-11
Abstract: 1437008 Magnetoresistive transducer apparatus INTERNATIONAL BUSINESS MACHINES CORP 11 Sept 1973 [11 Oct 1972] 42652/73 Heading G5R To reduce output signal distortion from a self-biased magnetoresistive transducer, which has two two-layer transducer elements R1, R2, Fig. 3, with the first layer of each element being magnetoresistive and current through the second layers providing a bias magnetic field for the corresponding first layers, a current source + V, - V is connected to supply to each element a current to aid in identification of element resistance and to generate the bias field, the current for the elements having equal magnitude and opposite directions to one another, and a detector 22 is connected to the elements and current source and is operable to detect resistance changes in the elements and to generate an output signal or a summation thereof. The transducer elements are integrally formed as sections of a generally E-shaped structure connected via resistors 20, 21 to the current source, the outputs being summed in a differential amplifier 22 causing reduction of output signal distortion due to cancellation of the D.C. and even harmonic distortion components in the signals. The transducer is formed by sputtering an Al 2 O 3  layer 18, Fig. 2, over a ferrite substrate 16, vacuum depositing a layer 11 of titanium on layer 18, depositing a magnetoresistive nickel-iron alloy layer 10 on layer 11 and applying a 40 oersted field to give an easy axis as shown in Fig. 2, depositing copper 15 on to layer 10 and etching layers 11, 10, 15 to the required shape, sputtering a layer 19 of Al 2 O 3  on to layer 10, 15 and etching layer 19 away over copper pads 15 to allow bonding of wires 12, 13, 14 thereto, and adding a second ferrite block 17, parts 16, 17 forming pole pieces defining a complete magnetic path through a back gap. The Al 2 O 3  layers provide a wear resistant surface at the working face of the head and magnetically separate layers 10, 11 from pole pieces 16, 17. The layer 11 may alternatively be a second magnetoresistive layer.
Patent GB-1018899-A (GB)
Title: A cutter for palm wood
IPC: B23D61/02
Filed: 1962-11-16
Abstract: 1,018,899. Woodworking. T. GASKINS. Nov. 16, 1962 [Nov. 24, 1961], No. 43385/62. Heading B5L. A tool for cutting palm wood or the like comprises a blade 10, Figs. 1 and 2 (not shown), having a series of raker teeth 17 in a common plane, and edges 16 shaped to cut incisively in parallel planes positioned at opposite sides of, and equidistantly spaced from, the raker teeth. The blade may comprise plates 11, 12, 13 secured together by spot-welds 14, the centre plate being formed with the raker teeth 17, and the outer plates being formed with cutting edges 16. The blade may be reciprocated at about 6000 strokes per minute through a distance of two inches, the edges cutting the fibres of the wood and the teeth 17, which function in both directions, removing the severed pieces of fibre. In another embodiment, the tool is circular and the raker teeth 19, Fig. 4 (not shown), are formed with abrupt shoulders on the leading side. In a further embodiment, the blade comprises a single plate 32, Fig. 6 (not shown), having raker teeth 33 and a pair of oppositely offset cutting teeth 34, 35 between adjacent raker teeth. In yet another embodiment, the tool consists of a chain having alternate wide and narrow links, the links 24, Fig. 9 (not shown), being bridged by a structure carrying the raker teeth 26. The sides of the links carry plates 27 formed with cutting edges 28.
Patent GB-992255-A (GB)
Title: Improvements in or relating to jet producing units
IPC: F02K7/00
Filed: 1961-12-05
Abstract: 992,255. Jet propulsion plant. A. R. HIGGIN. Dec. 4, 1962 [Dec. 5, 1961], No. 43405/61. Heading F1J. [Also in Divisions F4 and H5] A jet propulsion unit comprises a high frequency electric heating coil disposed around a carbon rod so as to define a chamber therebetween, a series of water inlet nozzles being disposed at one end of the chamber through which water may be discharged into the chamber, the water being vaporized as it flows through the chamber, the steam so produced discharging through an opening at the other end of the chamber. The unit shown comprises an electric heating coil 12 disposed within an asbestos cylinder 15, a carbon rod 13 being located within the cylinder so as to define an annular chamber 22 therebetween. The assembly is contained within a casing 19 having an end wall 18, the end wall co-operating with a member 16 which is adapted to support the carbon rod. Water supply nozzles 23 extend through the end walls 18, 16 so that water supplied through pipes 14 discharges into the annular chamber 22 where it is immediately vaporized by the incandescent carbon rod. The resulting steam discharges through an outlet 24. In the embodiment shown a heat exchanger 11 is disposed adjacent the outlet 24, the steam discharging through the central duct 27 of the heat exchanger and serving to generate steam which may be utilized in a steam turbine which drives an electric generator, the current so produced serving to energize the coil 12, also to drive water supply pumps. The unit would be started by means of electric current supplied from an external source.
Patent GB-1016610-A (GB)
Title: A backing for a surface structure such as a floor
IPC: C08L95/00
Filed: 1962-11-16
Abstract: A backing material to provide a level and sound and heat insulating layer supporting a bitumen or plastics tile floor on an uneven foundation such as concrete is formed by coating or impregnating loose, large-surface, flowable substances, such as hemp chaff, crushed husks, chip-wood waste &c., with a thermoplastic binder which does not become adhesive until heated to 60-150 DEG  C.  The binder, e.g. bitumen, is applied either as small lumps, in which case it is thoroughly mixed while warmed by a blast of warm air sufficient to cause it to adhere to the filler materials but not to cause them to bond together, or as a solution, the solvent being evaporated while the material is agitated to prevent sticking.  Waterrepellent and antiseptic substances, e.g. calcium or zinc stearate, copper naphthenate, sorbic acid, or sorbitol can be added.  In use, the material is laid, levelled, and then heated to cause the individual particles to stick together. The heat may be supplied by the hot, final surface material; alternatively, if desired, the under layer can be insulated by a sheet of paper or corrugated cardboard.
Patent GB-1483683-A (GB)
Title: Method of preparing hollow glass products by press moulding
IPC: C03B11/16
Filed: 1975-10-22
Abstract: 1483683 Press moulding glass articles ASAHI GLASS CO Ltd 22 Oct 1975 [22 Oct 1974] 43466/75 Heading C1M In a method of press-moulding a hollow glass product the pressure exerted on the plunger during a dwelling step, during which the plunger presses the glass until it is sufficiently hardened to be removed, is lower than that during the initial pressing step for which the time is adjusted so as not to produce under- or overfilling of the mould. The transition between the two pressures may be substantially instantaneous or gradual. The apparatus disclosed comprises means for automatically maintaining the required pressure for the required time.. The product may be the panel or funnel of a television tube.
Patent GB-1450400-A (GB)
Title: Pumping device and processes
IPC: F04B9/04
Filed: 1973-09-17
Abstract: 1450400 Reciprocating pumps ICI AUSTRALIA Ltd 17 Sept 1973 [22 Sept 1972 8 June 1973] 43475/73 Heading F1A A pump for supplying a liquid or gas at a constant flow-rate, e.g. for chromatographic apparatus, or metering liquid additive into a molten polymer stream for welt spinning fibres, comprises two pumps 28, 29 operating out of phase one pump performing its suction stroke and then operating at constant pressure against a closed delivery valve while the other pump effects its delivery stroke through an open delivery valve, the delivery valve of the one pump then being opened as the delivery valve of the other pump is closed, to provide a continuous pulse-less delivery, part of the force effecting the piston delivery stroke being provided by a fluid drive, e.g. a pneumatic piston motor 34, 35, and the remainder of the force being provided by a mechanical drive, e.g. a variable-speed electric motor-driven cam 26, 27 acting via the piston motor piston-rod, the suction strokes of the pump pistons being effected by the piston motors. Distributing valves 36, 37 for the piston motors are operated by a cam 38 driven by the pump cam electric motor. The pumps alternatively may be ram, diaphragm or bellows types, and may be hydraulically actuated.
Patent GB-951347-A (GB)
Title: Method of and apparatus for marking metal strip
IPC: C25F3/14
Filed: 1961-12-05
Abstract: <PICT:0951347/C3/1> Metal strip is marked, e.g. with a pattern, by passing the strip over the insulated cover perforated to form a pattern, which surrounds a hollow cylindrical roll, supplied with an electrolyte which seeps through feed channels to the outer surface of the roll and cover by capillary action, the strip being the anode and the roll the cathode.  The surface of the roll shown has perforations 40 through which electrolyte flows to circumferential grooves 42 formed on the face of the roll in each of which resides a ring of felt 44 acting as a "wick", through which electrolyte percolates to the perforated plastic sleeve 46 on which the strip is pressed. Electrolyte is fed through a hollow axle into the roll body, which may be mounted over a pickling tank through which the strip passes over sink rolls.  The patterned strip may then be tin-plated, with subsequent removal of the plate over the pattern, and lacquered.
Patent GB-1195072-A (GB)
Title: Cyclone Apparatus.
IPC: B04C5/081
Filed: 1967-09-25
Abstract: 1,195,072. Cyclone separators. CANADIAN PATENTS & DEVELOPMENT Ltd. 25 Sept., 1967 [14 Oct., 1966], No. 43576/67. Heading B2P. A cyclone, Fig. 1, for removing fine solids from a liquid suspension and discharging them as compact bodies or slugs 27 comprises a minor cylindrical section 11 and a major conical section 12, a vortex finder 13 defining with the wall of the cylindrical section 11 an annular chamber 21 into which a feed pipe 23 opens tangentially, and a tubular member 18 mounted on the conical section 12 and having an outwardly diverging bore 19 in communication with an orifice 15 at the apex of the conical section. The cyclone may be of metal or plastics and the member 18 may be of metal or ceramic material. The vortex finder opens into an overflow chamber provided with a clear liquid discharge pipe 24. A valve 25 serves to regulate the vacuum in the cyclone so as to maintain a balance between the slugs 27 discharging from, and air entering through the bore 19 of the member 18. Figs. 5 and 6 show two arrangements of a pair of cyclones operating in series. Fig. 7 shows a cluster arrangement of cyclones 38 suspended from a common support plate 39 and fed from a central pipe 40 through side branches. The vortex finders 42 extend into a common overflow chamber 43 defined between the plate 39 and a housing member 44, and communicating with a chamber 49 through openings 50 in housing member 44. A valve 51 controls the pressure in the cyclones and the chambers 43, 49.
Patent GB-1067611-A (GB)
Title: Improvements relating to agents suitable for hardening epoxy resins and to epoxy resins
IPC: C08L63/00
Filed: 1963-11-07
Abstract: Diamidopolyamines are made by reacting 1 mol. of biuret with at least 2 mols. of a polyamine. Specified polyamines are ethylene diamine, diethylene triamine, triethylene tetramine and phenylene diamine.ALSO:An epoxy resin is hardened in the presence of a diamidopolyamine hardening agent comprising the reaction product of 1 mol biuret with at least 2 mols of a polyamine having at least 2 primary amino groups.  Specified polyamines are ethylenediamine, diethylenetriamine, triethylenetetramine and phenylenediamine.  The exemplified epoxy resin is derived from p : p1-dihydroxydiphenylmethane and epichlorohydrin. Fusible but thermosetting partially cured epoxy resins may be obtained by reaction with the diamidopolyamines which may be ground to fine powders. Such powders from solid diamidopolyamines and mixtures of liquid resins and liquid diamidopolyamines may be mixed with solid epoxy resins and prehardened to give strips or rods of organic "solder."
Patent GB-1517490-A (GB)
Title: Photographic cameras
IPC: G03B3/02
Filed: 1976-10-25
Abstract: 1517490 Focusing mechanism BALDA-WERKE PHOTOGRAPHISCHE GERATE UND KUNSTSTOFF GmbH & CO KG 25 Oct 1976 [17 July 1976 16 Aug 1976] 44194/76 Heading G2A A lens focusing mechanism comprises a slide movable transverse to the optical axis, the slide having two inclined cam surfaces camming in opposite directions, each with a spring-urged cam follower, the arrangement being such that the components of the pressure on the cam surfaces acting along the displacement direction balance each other out. As shown, the slide 3 can be moved in its longitudinal direction by means of an operating member 13 which engages the slide. The lens housing 2 is urged in the direction of the optical axis by a spring 11 acting on a lug 4 on the housing. The lug 4 also engages an inclined cam surface 8 on the slide, urging it against a fixed bearing point 5. At the other end of the slide, on the other side, and being inclined in the same direction as cam surface 8, is another cam surface 9. A lever 15 on a pivot 12, and biased clockwise by a spring 10, has a lug 7 which bears against cam 9, so urging the slide against another fixed bearing point 6. When, by means of member 13, the slide is moved in either direction 22, so moving the lens housing 2 along the optical axis, components of the force exerted from the springs 10 and 11 along the length of the slide act in opposite directions, so cancelling each other out. Thus the slide 3 is in equilibrium in any position. The lever 15 may also be used to control another camera function, e.g. a rangefinder.
Patent GB-1097916-A (GB)
Title: Photographic materials
Inventor: STEVENS GUY WILLIAM WILLIS
IPC: G03C1/825
Filed: 1965-10-19
Abstract: 1,097,916. Antihalation layers. KODAK Ltd. Oct. 13, 1966 [Oct. 19, 1965], No. 44276/65. Heading G2C. A light sensitive silver halide material comprises a light absorbing backing layer containing carbon black, a binder and colloidal silver. The silver may be in a separate overcoat for the lightabsorbing layer. The binder may be cellulose acetate phthalate, polyvinyl phthalate, polyvinyl hexahydro phthalate, or cellulose acetate hexahydrophthalate.
Patent GB-1093344-A (GB)
Title: Process for preparing block copolymers
Inventor: ALDERSON GEOFFREY WINTON
IPC: C08F297/08
Filed: 1965-10-20
Abstract: A substantially crystalline block copolymer, comprising a minor proportion of a block or blocks of a rubbery copolymer containing a minor proportion of a branched chain a -olefin of formula CH2=CH.R, wherein R is a branched chain alkyl group, containing 3-10 carbon atoms and a major proportion of a normal a -olefin and a major proportion of a block or blocks of a crystalline polymer of the branched a -olefin, is prepared by copolymerizing the branched a -olefin with the normal a -olefin to form a first living polymer and subsequently polymerizing further branched a -olefin in the absence of the normal a -olefin, both stages being effected in the presence of a catalyst comprising (a) a solid crystalline compound of a metal of Groups IV, V, VI, VII or VIII, the metal being in a valency state lower than its maximum, and (b) an organometallic compound of a metal of Groups I, II or III, or of tin, or a hydride of a metal of Groups I, II or III, all groups being those of the Mendeleef Periodic Table. Diluents may be used, those specified being heptane, octane, benzene, toluene and xylene.  In Example 1, 4-methylpentene-1 is copolymerized with hexene-1 using n-heptane as solvent, TiCl3 and Al(C2H5)2Cl as a catalyst and under a blanket of nitrogen in a first stage, followed by the homopolymerization of 4-methylpentene-1 with the addition of 25% of hydrogen in the atmosphere of nitrogen (to act as a molecular weight regulator).  In a comparative example (Example 2), a random copolymer of 4-methyl-pentene-1 and hexene-1 is formed using the same catalyst, solvent and nitrogen atmosphere followed by hydrogen/nitrogen atmosphere.
Patent GB-1048208-A (GB)
Title: Baby's feeding bottle
IPC: A61J9/04
Filed: 1965-10-20
Abstract: 1,048,208. Feeding bottles. F. M. DUERME. Oct. 20, 1965, No. 44432/65. Heading A5X. A feeding bottle comprises an open-ended shell and two end-caps, one of the end caps bearing a teat and the other end cap bearing a collapsible air pouch disposed within the shell, the interior of the pouch being in communication with the atmosphere. The invention may be illustrated with reference to Fig. 4 wherein the air pouch 8, which may be made of thin rubber, is in the form of a bellows and is in communication with the atmosphere via the air hole 23.