baber/WOPTO huggingface dataset:
Patent GB-884395-A (GB)
Title: Improvements in or relating to electronic condition-responsive apparatus
Filed: 1958-01-21
Abstract: 884,395. Radiation detectors MINNEAPOLIS-HONEYWELL REGULATOR CO. Jan. 21, 1958 [Jan. 22, 1957], No. 2030/58. Class 40(3). Apparatus for detecting a condition manifested by the emission of light or like electromagnetic radiation, e.g. the presence of a flame at a burner, and operating indicator or control means in response to the detection, comprises a first transistor monostable circuit triggered by output pulses from a radiation sensitive device and an integrator, supplied with the output pulses of the monostable circuit, which produces a bias to hold a second transistor monostable circuit in its unstable condition in which it operates the indicator or control means. The presence of a flame at burner 10, Fig. 1, is detected by a photo-electric cell 11, which receives an alternating power supply from a secondary winding 20 of transformer 18, and each photo-cell output pulse increases the charge on condenser 24. When the voltage across the condenser reaches the firing voltage of gas tube 50, the tube fires discharging the condenser 24 and switching a monostable circuit comprising transistors 33 and 34 to its unstable state. This circuit switches back to its stable state after a time duration determined by condenser 48. The action is continuous and the output pulses of the monostable circuit, appearing across resistor 44, are integrated by resistor 16 and condenser 53 to provide a biasvoltage which maintains a second transistor monostable circuit comprising transistors 56 and 57 in its unstable state. A relay 59 in the collector circuit of transistor 57 is energised and operates indicator or control means. In a second arrangement, Fig. 2 (not shown), a Geiger counter, operating with a gas triode quenching circuit, detects the pressure of the flame.
Patent GB-232690-A (GB)
Title: Improvements in and connected with suspension chains for electroliers or the like
IPC: F16G13/16
Filed: 1924-01-25
Abstract: 232,690. Stevenson, J. H. Jan. 25, 1924. Hooks 5 for supporting chains 1 from which electroliers are suspended are made hollow to accommodate the electric wires 15 and have a hole at the, point where the first chain link rests to allow the wires to pass from the hook into the chain links, which are also hollow. The hooks may be of tubular or of channel section.
Patent GB-923258-A (GB)
Title: Improvements in and relating to nuclear fuel elements
Inventor: GASKELL BRIAN VERNON
IPC: G21C3/38
Filed: 1961-01-18
Abstract: 923,258. Fuel elements. GENERAL ELECTRIC CO. Ltd. Jan. 8, 1962 [Jan. 18, 1961], No. 2053/61. Class 39 (4). Support means for the longitudinally extending splitters 4 of a fuel element having heat exchange fins 6 comprise, in one embodiment (Fig. 1), keys 2 attached by means of legs 3 to the splitters 4 at 90 degrees intervals and slidable in grooves 5 formed in the inner wall of the tubular support sleeve 1. The ends of the splitters 4 are secured to the arms of a spider end member 7 which supports the fuel element by attachment to a beam 8 to which it is fixed by securing means 9 after the beam has been seated in its positioning groove 10. The edges of the splitters 4 may be provided with raised portions or castellations at the positions where the keys 2 are fitted so as to reduce the total coolant gas loading brought to bear on the keys 2. In another embodiment (Fig. 3), the splitters 4 are slotted, as at 11, and these slots engage keys 12 in the form of wires bent to the form shown and secured to the wall of the sleeve 1. Alternatively, the slots may be of dovetail shape and engage correspondingly shaped keys. In the first embodiment, the upper support spider has extensions (not shown) which engage the grooves 5 while in the second embodiment, extensions on the upper support member 15 engage grooves 16 on the inner wall of the sleeve 1. The arrangement shown in Fig. 7 is similar to that shown in Fig. 1, but here keys 17 are formed as castellations integral with the edges of the splitters 4.
Patent GB-907836-A (GB)
Title: Frication elements for brakes or clutches
Inventor: JENSEN WARREN ROSS
IPC: F16D69/02
Filed: 1960-01-20
Abstract: In a brake friction mechanism, a composition friction material consists of a hardened organic binder with fibre reinforcements and friction material filler, not more than 10% by volume of the liner components being harder than the metallic friction elements it engages which is composed primarily of relatively high heat p conductive silver, copper, or alloys of these metals having a melting point of at least 1500 DEG F. and a thermal conductivity equal to at least 40% of pure electrolytic copper.  The fibre content of the friction composition liner is preferably approximately 10% to 40% by volume of which at least 75% is composed of organic fibres. A typical composition is fibres 20,52%, binders 42,47% (Oil modified Phenolic Resin 21,4%, Phenolic Resin 7,7%, Rubber Latex Solids 10,33%, Sulphur 3,04%), Fillers 37,01% (20-mesh Cardolite 11,38%, Graphite 7,56%, Barytes powder 5,46%, 325-Mesh 18% Lead Litharge 6,8%, 40-Mesh Pyrites 4,71%, Plasticizer 1,10%).  The main characteristic of the invention lies in the replacements of the asbestos fibres, usually employed by cellulose fibres which were found to have unexpectedly good wear characteristic when used with liquid cooled metal friction members.  Specification 775,052 is referred to.
Patent GB-493992-A (GB)
Title: Improvements relating to the recovery of naphthalene
IPC: B01D9/00
Filed: 1938-01-21
Abstract: Apparatus for recovery of naphthalene from oil containing it comprises a cooled mixer 3 in which liquid oil and naphthalene are cooled to form a paste, a heated press 7 in which the paste is treated to expel the oil, a crystallizer 12 in which this oil is further cooled to crystallize naphthalene still in solution, and a reservoir 10 between the press and crystallizer for storing the oil. The crystallizer may also be connected to the initial feed 2 and be of sufficient capacity to store <PICT:0493992/IV/1> the crude oil when the press is idle.  The oil is cooled in mixer 3 to 40-50 DEG C., and the oil leaving press 7 is at 50-60 DEG  C.  The reservoir 10 has a capacity sufficient to store this oil while crystallization is in progress or the crystallizer is being emptied or cleaned.  After cooling in crystallizer 12, residual oil passes to a reservoir 14, and the separated naphthalene is re-liquefied.  The crystallizer is fitted for this purpose with tubes 13 connectable to a source of heating or cooling medium. The liquefied naphthalene is then run into mixer 3.  A branch 23 of the feed pipe 2 allows the crystallizer to be used as a reservoir for crude oil.  Several crystallizers may be provided.
Patent GB-673733-A (GB)
Title: Method and machine for twisting or spinning textile yarns
IPC: D01H1/02
Filed: 1948-01-23
Abstract: 673,733. Spinning or twisting textile yarns. SACO-LOWELL SHOPS. Jan. 23, 1948 [Jan. 29, 1947], No. 2109/48. Class 120 (ii) The ngure of revolution formed by a yarn between an apex, which may be provided by delivery rollers, and a generator, such as a traveller, rotating cap, or flyer, which figure in its natural form assumes an exteriorly concave necked configuration, Fig. 1A, is stabilized to outward convexity by applying encircling means simultaneously at several different levels, Fig. 4A. In one form of apparatus, the yarn extending between a pair of rollers 54, 55. Fig. 7, and a spinning ring 50 is constrained by rings 35, 70, 71 mounted on traverse rails 65, 72, 73 movable in synchronism with, though with a shorter traverse than the ring rail 51. The rails 51, 65, 72, 73 are actuated by a common bell crank 58 associated with a conventional builder motion. The bottom ring 35 is of greater diameter than the middle ring 70 and the ring 70 greater than the top ring 71. A speed of 5,280 feet per minute or. higher is preferred for the traveller, which rotates on a path of at least 2 inches diameter and has a traverse of 9 inches. The Specification as open to inspection under Sec. 91, comprises also the application of the invention to devices in which yarn is led from a generator to an apex, as in two-for-one uptwisting. This subjectmatter does not appear in the Specification. as accepted.
Patent GB-711174-A (GB)
Title: Improvements in or relating to the preparation of alkali metal borohydrides
IPC: C01B6/00
Filed: 1952-01-25
Abstract: Alkali metal borohydrides are prepared by introducing into a pressure vessel, an alkali metal hydride suspended in ether together with a boron halide or an ether complex of a boron halide dissolved in ether and heating the resultant mixture in the pressure vessel to produce a reaction between the alkali metal hydride and the boron halide.  In the example an absolute ether suspension of lithium hydride is mixed with an ether complex of boron trifluoride diluted with absolute ether and the mixture heated in a pressure vessel for 24 hours at 125 DEG  C.  The product is extracted with absolute ether and filtered to remove excess lithium hydride.  The ether extract is concentrated and the lithium borohydride is precipitated on cooling as colourless needles.
Patent GB-1415043-A (GB)
Title: Production of cross linked polymer films
IPC: C08K5/41
Filed: 1973-01-16
Abstract: 1415043 Cross-linked polymer films GULF OIL CANADA Ltd 16 Jan 1973 [17 Jan 1972] 2164/73 Heading C3P A cross-linked polymer film is prepared from an aqueous polymer emulsion containing a cross-linkable system incorporating N-methylolamide groups, the components of the system comprising the polymer which is film-forming at ambient room temperature and optionally a cross-linking agent, by adding to the emulsion a water-soluble compound containing a sulphamate group as cross-linking catalyst, the emulsion being adjusted to acidic pH with sulphamic acid or nitric acid, casting a film from the emulsion, and drying the film. In the examples vinyl acetate/acrylamide copolymers and vinyl acetate/n-butyl acrylate/acrylamide terpolymers are treated with formaldehyde, tetramethylol acetylenediurea, sodium silicate, alum, p-toluene sulphonic acid, Zn(NO 3 ) 2 , nitric acid, ammonium sulphamate and sulphamic acid, cast into a film and dried.
Patent GB-1382801-A (GB)
Title: Electrostatic spray coating
IPC: B05B5/04
Filed: 1972-01-17
Abstract: 1382801 Electrostatic spraying NAUCHNO-ISSLEDOVATELSKY INSTITUT SANITARNOI TEKHNIKI MINISTERSTVA PROMYSHLENNOSTI STROITELNYKH MATERIALOV SSSR 17 Jan 1972 2181/72 Headings B2F and B2L In electrostatic spraying a finely dispersed charged aerosol cloud 7, Fig. 1 is enveloped by a sheath 8 of ionised gas to assist its movement towards an earthed article 1 being sprayed and allow even coating of concavities thereof. The sheath is produced in the outer region of a corona discharge initiated by needle electrodes 9 electrified by an H.T. rectifier 5 the gas e.g. air being supplied through fish-tail nozzles 10 alternating the electrodes in a circumferential ring. The spray gun comprises a rotary head 3, Fig. 2, having helically-arranged nozzles 6, to abrasion resistant tips 17 of which spray material is supplied through a copper tube 4, also electrified by the rectifier 5, and in which it is charged by contact therewith. Air, supplied through a chamber 13 in which it is ionised by electrodes 12 on the tube 4, entrains and atomises the spray material as the air flows around the tips 17. In a modification, Fig. 3 (not shown), the gun has a hemispherical front end surface with which the tips (17a) are flush. The gun is mounted on rails 33, Fig. 4, and its movement is controlled by limit switches 36/5, 36/6, whilst the article 1 to be sprayed is under the control of limit switches 36/1 to 36/4 on an earthed conveyer 11. Remote or automatic control can be effected by an electrical system described in detail (Figs. 5, 6, not shown). The spray material is supplied from a container 24 mounted on H.T. insulators 26 and electrified from the rectifier 5 via a line 23, the container being pressurised by an air hose 28/1 and supplying the spray head 3 or 3a through a line 29 incorporating a metering device 27 under the control of the electrical system. Air hoses 28/2, 28/3 supply the head 3 or 3a and the nozzles 10 respectively. The head 3 or 3a is rotated by a drive mechanism 21, also controlled by the electrical system.
Patent GB-1444337-A (GB)
Title: X-ray voltage controll apparatus
IPC: H05G1/64
Filed: 1975-01-17
Abstract: 1444337 X-ray apparatus SIEMENS AG 17 Jan 1975 [22 Jan 1974] 2240/75 Heading H2H A X-ray voltage control apparatus provides an adjustable X-ray voltage for X-ray fluoroscopy in a first condition, and an X-ray tube voltage for preparing a radiogram in a second condition, and comprises a function generator 14 arranged to receive an input corresponding in value to the adjustable X-ray voltage provided by the apparatus when in the first condition and to supply an output signal which varies with the input according to a predetermined and selectable programme, the apparatus including voltage setting means 21, 13 to set automatically in dependence on the output signal the X-ray voltage provided by the apparatus on switching from the first to the second conditions to a value determined by the output signal and an indicator 17 controlled by the output signal to indicate the value of the X-ray tube voltage that would be provided on switching. The indicator may be arranged to continue display after switching has taken place. An A/D converter 18, 19 receives the output signal from generator 14 and this signal is taken via various digital devices 24-29 to be displayed on numeral devices 30-32. The X-ray machine itself comprises a source 1 to X-ray a patient 2, an image intensiffer 3 and a photographic and TV camera arrangement 5, 6. Part of the resultant X-ray signal is deflected by mirror 7 to a photo-multiplier 8. A switch 9 enables the first and second apparatus conditions to be selected. In the first condition the switch 9 is as depicted and connects the photomultiplier 8 to a dosage control 10 which serves to maintain the brightness of the output screen of intensifier 3 constant. This in turn controls voltage setting means 13. When the switch 9 is in its alternate position, device 11 controls radiogram exposure time, the device 13 being controlled at 21.
Patent GB-980955-A (GB)
Title: Transistor relaxation oscillator
IPC: H03K3/30
Filed: 1962-01-23
Abstract: 980,955. Transistor multivibrator circuits; pulse modulation. NEDERLANDSE ORGANISATIE VOOR TOEGEPAST-NATUURWETENSCHAPPELIJK ONDERZOEK TEN BEHOEVE VAN NYVERHEID, HANDEL EN VERKEER. Jan. 23, 1962 [Jan. 25, 1961], No. 2426/62. Headings H3T and H4L. In a transistor multivibrator oscillator part of the base bias is derived from the oscillator output such that when the circuit is not oscillating the transistors are not saturated and self-starting is facilitated. The multivibrator shown has an external bias derived from a source 16 such that when the circuit is not oscillating the transistors conduct but are not saturated. The transistors accordingly have sufficient gain for oscillations to start spontaneously. A further bias derived by a rectifier system 18, 22, 23 from the output circuit when oscillation has started ensures that when each transistor conducts it is saturated. The variable voltage 16, which may be derived from a transducer, varies the frequency of oscillation. In an alternative circuit (Fig. 4, not shown) the variable voltage is applied between the centre tap of the transformer and the negative terminal of supply Ec, and the oscillator output is derived from an additional winding on the transformer.
Patent GB-709767-A (GB)
Title: Improvements in and relating to electric circuit breakers
Inventor: INGWERSEN RICHARD CASTLE
IPC: H01H73/30
Filed: 1952-01-29
Abstract: 709,767. Automatic circuit-breakers. MECHANICAL PRODUCTS, Inc. Jan. 29, 1952, No. 2442/52. Class 38(5) In a circuit-breaker embodying the essential features of that disclosed in Specification 669,656, a U-shaped bimetal latch 21 is connected by transverse portions 18 to a pair of guide fingers 32, the portions 18 abutting ear portions 22a on a rectangular section extension 22 of an insulating push-button 41. The button 41 is slidable within a fixed insulating block structure 28 carrying a phosphor-bronze plate 38 for engagement with the end of the latch 21, a side surface 28c of the block slidably engaging the guide fingers 32. On overload the latch 21 disengages the plate 38 and springs 24 connected to contact carrying arms 16 open the contacts 14, 12, the latch 21 and fingers 32 sliding over opposite side surfaces 28c of the block 28 and the push-button 41 being moved outwardly due to the engagement between the portions 18, 22a. The fingers 32 may be connected by an insulating plate 34. Specification 709,717 also is referred to.
Patent GB-137623-A (GB)
Title: Improvements in or relating to electric fusible cut-outs
IPC: H01H85/143
Filed: 1919-01-31
Abstract: 137,623. Joyce, V. E., and Park Royal Engineering Works, Ltd. Jan. 31, 1919. Fusible cut-outs.-A fusible cut-out of the bridge carrier type has self-alining contacts 7 capable of rocking and rotary movement. The enlarged head 11 of a projection 10 on, or secured to, the contact is retained in a recess 12 on the inner face of the holders 3 by a plurality of plates 13 secured to the face of the holder. A compression spring 19 is placed between the head 11 and the bottom of the recess 12. The plates 13 may be secured by screws passing into a plate 17 arranged in a transverse slot 18 on the holder.
Patent GB-210787-A (GB)
Title: Improvements in and relating to acetylene gas generators
IPC: A62C4/02
Filed: 1923-06-19
Abstract: 210,787. Naamlooze Vennootschap Werktuigenfabriek Rotator, (Assignees of Filarski, J. D.). Jan. 6, 1923, [Convention date]. Pressure - regulating valves.-A device to relieve excess pressure n the outlet system of an acetylene generator comprises a vessel y containing liquid and suspended by counterbalance levers x; the outlet pipe q<3> from the generator depends in the liquid and is provided at the upper end with an outlet valve z, the stem of which passes through the tube and rests on the base of the vessel y; the outlet pipe q' carries also a fitting consisting of inner and outer tubes q<2>, q<1> connected at their lower ends by a conical portion q<4>, and the arrangement is such that gas passing through the outlet valve z down the pipe q<3> collects in this conical space and passes away to the outlet connection o through the annular space between the tubes q<2>, q<3>. On increase of pressure due to a backflow of oxygen from an oxy-acetylene burner, or to an explosion, the vessel y immediately falls, and thereupon the valve z closes. The device is shown fitted to the carbide-to-water acetylene generator described in Specification 209,383, [Class 54, Gas distribution], in which the supply of carbide is controlled by the movements of the gas-holder actuating a pocketted drum arranged beneath the carbide hopper.
Patent GB-396077-A (GB)
Title: The manufacture of aminohalogen-anthraquinone sulphonic acids
IPC: C09B1/24
Filed: 1932-01-28
Abstract: Aminohalogenanthraquinones.--1 : 4-Diamino-2 : 3-dihalogenanthraquinones are sulphonated, advantageously in the presence of boric acid, to give sulphonic acid derivatives without splitting off either halogen atom.  For the sulphonation compounds containing, or capable of yielding sulphur trioxide, such as fuming sulphuric acid, chlorsulphonic acid, sulphuric acid monohydrate are employed, and reaction temperatures ranging between 110-160 DEG  C. are generally necessary.  The products dye wool in fast clear shades which are not changed by afterchroming. In examples 1 : 4-diamino-2 : 3-dichloranthraquinone is heated with chlorsulphonic acid, fuming sulphuric acid and boric acid at 145-150 DEG  C.; it dyes wool violet shades.  Fuming sulphuric acid and boric acid may be used alternatively at about 120-125 DEG .  1 : 4-Diamino-2 : 3-dibromanthraquinone and 1 : 4-diamino-2-chloro-3-bromanthraquinone (prepared by chlorinating 1 : 4-diamino-3-bromanthraquinone) may similarly be treated to give acid wool dyestuffs.  Specifications 5018/99 and 21571/99, [both in Class 2, Acids and salts, Organic &c.], are referred to.  The Specification as open to inspection under Sect. 91 relates to the sulphonation as described above of such derivatives of a -aminoanthraquinone or of 1 : 4-diaminoanthraquinone as contain a halogen in o-position to the amino group, and which may contain further substituents such as amino or hydroxy groups. Further examples are given wherein (a) 1 : 4-diamino - 2 - brom-(or 2-chloro-) - anthraquinone (prepared from 1-amino-2 : 4-dibromanthraquinone and p-toluenesulphonamide) is treated with monohydrate, fuming sulphuric and boric acid (dyes violet); (b) 1-amino-2-bromo-4-hydroxyanthraquinone (prepared from 1-amino-2 : 4-dibromoanthraquinone by treatment with sulphuric acid in presence of boric acid) is treated with fuming sulphuric and boric acid; similar treatment is also applied to 1-amino-4-hydroxy-2 : 3-dichloranthraquinone (prepared from 1 : 4-diamino-2 : 3-dichloroanthraquinone by way of the monodiazo compound); (c) 1-amino-2-bromanthraquinone is treated with fuming sulphuric acid (dyes wool brown shades).  This subject-matter does not appear in the Specification as accepted.
Patent GB-692827-A (GB)
Title: Process for removal of impurities from dicyanobutene
Filed: 1951-02-02
Abstract: A process for separating copper compounds from mixtures containing such compounds dissolved in 1,4-dicyano-2-butene, said compounds being the copper-containing products which are formed by reaction of hydrogen cyanide with dichlorobutene under aqueous acidic conditions in the liquid phase in the presence of a dissolved copper-containing catalyst, preferably consisting of CuCN dissolved in NaCN in proportions represented by Na3Cu(CN)4 comprises extracting the said compounds from the said 1,4-dicyano-2-butene with hydrogen cyanide at a pH within the range of 4.0 to 7.0.  Diluents which may be used include benzene, toluene, xylene, carbon tetrachloride cyclohexane, liquid alkanes, kerosene and liquid alkenes. Ordinary and elevated temperatures and pressure may be used, temperatures high enough to break emulsions which are sometimes formed being advantageous, e.g. when using benzene as diluent. The pH of the solution may be adjusted by, e.g., dilute hydrochloric acid and dilute sodium cyanide or a suitable buffer. In the example a mixture of 3,4-dichloro-1-butene and 1,4-dichloro-2-butene is added to a hot solution of hydrochloric acid, cupric chloride and sodium cyanide and further sodium cyanide is added to maintain a pH of 48-55.  The organic layer is decanted and mixed with a benzene extract of the aqueous layer, the benzene layer being then extracted with aqueous hydrogen cyanide at room temperature using various conditions of pH.  Iron compounds also present are stated to be removed.  The process is p  effective when the copper-containing cyanation catalyst is introduced into the reaction mixture in the form of an inorganic or organic salt of copper.  Further acidification of the aqueous phase from the crude products obtained in the preparation of 1,4-dicyano-2-butene is stated to produce a precipitate which on boiling with hydrochloric acid yields cuprous cyanide and b -dihydro muconic acid. Specification 639,438 is referred to.