baber/WOPTO huggingface dataset:
Patent GB-1086050-A (GB)
Title: Method and system for detecting and locating pipe line leakage
IPC: G01M3/22
Filed: 1966-07-04
Abstract: 1,086,050. Testing pipes for leaks. C.O. BUNN. July 4, 1966, No. 29924/66. Heading G1S. In a pipe line installation, a pipe 10 is enclosed by a casing 11, the intermediate space 12 being partially filled with insulating material. Sumps 14 are positioned at intervals along the pipe and spaced covered stand pipes 15-17 extend from the space 12 to the ground level. A compressed air supply is connected through a flow-indicator 37 and pressure reducing valve 38 to the space 12. Each sump 14 has a drain 41 which is provided with valve control means which allows fluid to be drawn from the space 12 without change in air pressure. When fluid from the pipe 10 leaks into the space 12 an appropriate vapour sensitive switch 21-23 is energized to cause subsequent actuation of a corresponding indicator light 24-26 and a master indicator light 50 (see Fig. 2, not shown). Simultaneously a by-pass valve 40 is opened to supply full air pressure to the space 12, thus opening a pressure relief valve 48 to clear any fluid collected in the sump. To indicate a leak in the casing, the air flows into the surrounding earth and a further master indicator light 51 (see Fig. 2, not shown) is illuminated, in which case the position of the leak may be ascertained by tracer tests. Audible alarms may be provided.
Patent GB-898185-A (GB)
Title: Telescoping loading and unloading structure for aircraft vehicles
IPC: B64F1/305
Filed: 1960-08-31
Abstract: 898,185. Gangways. TRIGGS, W. W. (Stanray Corporation). Aug. 31, 1960, No. 29979/60. Class 113. A loading and unloading gangway for vehicles e.g. aircraft, comprises telescoping sections 26, 28 and 30 which are supported at the terminal building 10 by a pedestal 56 and at the outer section by a steerable self-propelled supporting structure 48. The gangway is mounted for universal movement about the pivot 60 and shaft 58 by the structure 48. An inflatable vehicle engaging box piece 126 is provided at the outer end pivotably mounted at 118. A foyer 53 is provided to connect the pier end of the gangway with the building 10 which is provided with curtains 57 that wind on to reels 55 as the gangway swings horizontally to maintain a weather proof connection between the building and gangway.
Patent GB-157620-A (GB)
Title: Securing handles (or hafts) of celluloid, or similar material, to the tangs of table cutlery and the like
IPC: B26B3/02
Filed: 1919-12-02
Abstract: 157,620. Littler, T. Dec. 2, 1919. Fixing by screwed tangs.-A handle of celluloid or like material is secured to the tang of a knife, fork, &c. by forming a part at the outer end of the tang with a screw-thread having two opposite flats. Alternatively, the screwed part with flats may be formed at the bolster end by increasing the diameter. The tang is driven into the bore of the handle at right-angles to its proper position and the blade and tang are then rotated through a quarter turn to the proper position, and the threads are thereby forced through the material and the handle drawn tight against the bolster.
Patent GB-873926-A (GB)
Title: Improvements in or relating to electric pulse code systems of communications
Inventor: JACOBSEN BENT BULOW
IPC: H04B14/04
Filed: 1959-09-03
Abstract: 873,926. Pulse code modulation systems. STANDARD TELEPHONES & CABLES Ltd. Sept. 3, 1959, No. 30036/59. Class 40(5) In a transmitter for a pulse code modulation system, means are provided for adding a band of "white noise" to the signal before quantising in order to reduce the noise due to quantizing errors. In a multichannel system in which a number of channel frequency bands are arranged on a frequency division basis and transmitted over a pulse code modulation system the quantizing errors arising when only one or two channels are busy are reduced. The added noise removes the discontinuity which exists when the signal amplitude is comparable with but not equal to a quantizing step. As shown, a conventional channelling equipment 1 includes modulators for producing a group frequency band comprising a number of channel frequency bands arranged side-by-side. A filter 3 selects from a noise generator 2 a band of "white noise" which is combined with the group frequency band at 4 and the combined wave is supplied to a conventional pulse coder 6. In Fig. 2 line 7 represents the zero axis of signal amplitude, 5 being the voltage difference between adjacent levels. If the signal amplitude lies anywhere between the values 0 and + 5, then after quantizing it will appear as the amplitude S/2 which is the nearest step. Assuming that the signal has a constant amplitude (1+a) S/2 line 8, in a conventional system, this amplitude would be coded as S/2 for any value of a between +1 and -1, but as 3S/2 for any value of a between +1 and +2. When the noise wave is applied the effective signal waveform 9 will have a relatively large proportion of samples with quantized levels zero and and a few with levels such as 3S/2 and - S/2 When the root mean square value of the amplitude of the added noise wave is at least S/2 the proportion of the various quantized levels will be such that the average quantized level is approximately (1+a) S/2 for all values of a. A similar advantage is obtained with a signal of variable amplitude. If the added noise is confined to a frequency band lying between the maximum signal frequency and a frequency equal to the difference between the sampling frequency and the maximum signal frequency, no noise will be added to the wanted received frequency band.
Patent GB-1439471-A (GB)
Title: Cameras
IPC: G03B7/083
Filed: 1973-06-25
Abstract: 1439471 Cameras AGFA-GEVAERT AG 25 June 1973 [23 June 1972] 30051/73 Heading G2A A camera exposure control circuit has a transistor switching arrangement for switching a photo-resistor 5 between a low light indicator 21 and an integrating capacitor 7 connected to a shutter controlling trigger circuit 1. In Fig. 1, during the first part of shutter release a switch 3 is closed to turn on transistors 8 and 17 which respectively short out capacitor 7 and connect photo-resistor 5 through a threshold switching transistor 19 to a luminous diode 21. During the second part of shutter release a switch 9 is opened to switch off transistors 8 and 17 and to switch on a transistor 6 which connects photoresistor 5 to capacitor 7. Fig. 2 (not shown) shows an alternative circuit wherein a switch (61) firstly switches on a capacitor shorting transistor (58) and secondly switches on an indicator shorting transistor (60). By covering the photo-resistor, the indicator can be used to indicate battery state.
Patent GB-787147-A (GB)
Title: Method and apparatus for briquetting fine-grained caking fuels
IPC: C10L5/04
Filed: 1955-10-21
Abstract: 787,147. Fuel. COLLIN AKT.-GES., F. J. Oct. 21, 1955 [Dec. 9, 1954], No. 30144/55. Class 50. Caking fuel, of a small grain size, preferably less than 5 mm., is made plastic for briquetting by entraining it in a heating gas and repeatedly removing it from, and re-mixing it with, the gas in a system including a series of cyclones, the general flow of the fuel being in the opposite direction to the flow of the gas. The heating gas is the combustion product of a furnace 1, no free oxygen being present. The fine grain fuel is supplied by a hopper 6 to a conduit leading to a cyclone 5 which discharges the separated fuel into a conduit leading to the cyclone 4, and the gas, through a fan 14, partly to a filter 15 for venting to atmosphere and partly back to the furnace 1. The fuel thus passes successively through the cyclones 5, 4, 3, 2 whilst the gas passes through the cyclones in the reverse order 2, 3, 4, 5. The cyclone 2 has a stirrer 11 and a worm 12 feeding the briquetting press 13.
Patent GB-985059-A (GB)
Title: Improvements in and relating to shock absorbers
IPC: F16F9/30
Filed: 1962-08-07
Abstract: 985,059. Shock-absorbers. SOC. D'EXPLOITATION DES RESSORTS AUTOAMARTISSEURS JARRET. Aug. 7, 1962 [Aug. 7, 1961], No. 30166/62. Heading F2S. [Also in Division B7] A shock-absorber spring, e.g. for use as a towbar and comprising a rigid casing 1 entirely filled with an elastomer or a compressible liquid 3 and having two parts of different section, and a differential piston 2a, 2b, 2c which serves to vary the volume of the elastomer or liquid, and which is in sealing tight engagement between the ends of the casing is characterized in that the casing 1 is closed at one of its ends by a ring 5 which is slidable along the part of small section 2b of the piston when the larger part 2a enters the cylinder and which is fast therewith during movement of the piston in the opposite sense F<SP>1</SP>, seals 4b, 4c being provided between the ring 5 and the piston part 2b and the casing wall respectively so that the ring 5 acts as a piston when the piston 2a, 2b, 2c moves in the opposite sense F<SP>1</SP>. The ring 5, which normally rests against the adjacent end of the casing 1, has an annular cross-sectional area larger than the difference between the cross-sectional areas of the piston parts 2a, 2b so that the spring also acts in compression when a force is applied in the direction F<SP>1</SP>. The piston part 2a passes out of the casing through a seal 4a fast with the cylinder 1 which is keyed, at 6, to a coupling head 7 the part 2c of the piston being connected to a ring 8. The head 2 of the piston serves to limit its stroke. Specification 871,847 is referred to.
Patent GB-1422148-A (GB)
Title: Magnetically codable material
IPC: G11B5/735
Filed: 1972-06-28
Abstract: 1422148 Magnetic materials DRG PACKAGING Ltd 21 June 1973 [28 June 1972] 30346/72 Heading B2E A magnetically codable sheet material comprises a base substrate of resilient plastics film, having on one surface a magnetisable coating material, the other surface being rendered absorbent for the reception of oil-based printing ink. The printable surface preferably has a print-receptive absorbent coating such as clay dispersed in a suitable binder. The magnetisable material may be magnetic iron oxide dispersed in a binder. Either or both coatings may be applied as an aqueous dispersion. In the Examples the film is of unplasticised polyvinyl chloride having a coating applied from an aqueous dispersion of iron oxide in an acrylic binder, the ratio by weight of oxide to acrylic material being 1:1. The iron oxide coating was given a protective overcoating of solvent-based waterproof shellac. The other surface was then knife-coated with a composition of 76 parts clay, 60 parts binder 2 parts dispersing agent and 62 parts water. In the other Example the unplasticised polyvinyl chloride film was primed with an acrylic resin in solvent dispersion before being air-knife-coated with an aqueous dispersion of magnetic iron oxide in the polyvinylidene chloride binder, the weight ratio of each being 1:1. A wax emulsion/polyvinylidene chloride dispersion was then applied to provide water-resistance and abrasion-resistance. The other surface was coated with a composition comprising 27.5 parts calcium carbonate, 22.5 parts acrylic binder and 15 parts solvent. The product may be used to prepare railway tickets which need to be repeatedly flexed in feeding in decoding apparatus.
Patent GB-1156955-A (GB)
Title: Electrolytic Hydrodimerisation
Inventor: BIZOT JEAN
IPC: C25B3/29
Filed: 1967-06-30
Abstract: 1,156,955. Electrolytic hydrodimerisation of compounds. RHONE-POULENC S.A. June 30, 1967 [June 30, 1966], No. 30370/67. Heading C7B. A process for the hydrodimerisation of ethylenically unsaturated monomers of the general formula: where R 1 , R 2  and R 3  represent a hydrogen atom or hydrocarbon radical and Z represents a ketone, ester, nitrile, amide or aldehyde group, e.g. of acrylonitrile to form adiponitrile, comprises electrolyzing a mixture of (a) the monomer; (b) water, the ratio of monomer/water being from 15/85 to 75/25 by weight; and (c) 10 to 30% by weight of (a), (b) and (c) of (c) a buffer containing at least one quaternary ammonium salt of an oxygen-containing inorganic acid having a pK in water of 5-11, the components of the buffer being in such ratio that the pH of their aqueous solution is 6-10. The buffers used may comprise alkyl quaternary ammonium salts of weak acids such as borates, carbanates, bicarbonates and orthophosphates, e.g. a tetra-(n-butyl) amminium salt. The process may be carried out in a diaphragm or single compartment cell. The cathode used may comprise mercury, graphite, lead, lead/ mercury alloy or Darcet alloy (Bi-Sn-Pb). The anode may be formed of lead or nickel, the surface of which may be oxidized, platinum deposited on to graphite, gold or stainless steel. The interelectrode gap may be 1-15mm.
Patent GB-777138-A (GB)
Title: A process for the manufacture of hydrogen peroxide
Inventor: LEFEUVRE CHARLES WILLIAM
IPC: C01B15/023
Filed: 1954-10-21
Abstract: Hydrogen peroxide is produced by the successive reduction and reoxidation of an anthraquinone, e.g. 2-ethyl anthraquinone, in a solvent medium consisting of cyclohexanyl or an alkyl cyclohexanyl acetate or propionate or a mixture of two or more of these esters. The alkyl group or groups of the alkyl cyclohexanyl ester preferably contain a total of not more than 8 carbon atoms, methyl cyclohexanyl acetate being specified.  In the example hydrogenation was carried out in the presence of a suspended catalyst consisting of palladium supported on activated alumina. Specification 747,190 is referred to in Provisional Specification.
Patent GB-685175-A (GB)
Title: Improvements in or relating to apparatus for towing ships and boats
IPC: B63B21/56
Filed: 1950-12-13
Abstract: 685,175. Towing ships and boats. CLARKE, CHAPMAN & CO., Ltd., and SANDERS, R. E. Oct. 4, 1951. [Dec. 13, 1950] No. 30451/50. Class 114. In towing apparatus for ships and boats a flexible sheath 15 for the towing rope 1 is provided on the towing vessel and extends over the taff-rail 8 from near the point of tow so that no part of the towing rope comes into direct contact with the deck superstructure and chafing of the rope is thereby reduced. The sheathis formed as a helical coil of spring steel wire and is connected through a bearing enclosed in a housing 20, and a yoke 22 with a vertical pivot 25 on the deck. A lead-in ferrule 16 is provided. The ferrule and housing are readily detachable form the sheath so that the latter may be reversed.
Patent GB-445332-A (GB)
Title: Improvements in and relating to thermal insulations
IPC: F25D23/06
Filed: 1935-01-30
Abstract: 445,332. Nonconducting coverings for heat. NAAMLOOZE VENNOOTSCHAP INTERNATIONALE ALFOL-MAATSCHAPPIJ, 117, Keizergracht, Amsterdam. Jan. 30, 1935, No. 30470. Convention date, Feb. 2, 1934. Divided out of and addition to 442,396. [Class 64 (ii)] In the apparatus described in the parent Specification in which the heat flow through a plurality of gas layers is regulated by moving one or more of the separating partitions, one or both of the boundary surfaces are also moved.
Patent GB-787566-A (GB)
Title: Air distributing apparatus
IPC: F24D5/02
Filed: 1955-03-16
Abstract: 787,566. Floors. ROBERTSON THAIN, Ltd. (Robertson Co., H. H.). March 16, 1955, No. 30471/56. Divided out of 787,565. Class 20(4) A metal floor comprises cellular units 102 in longitudinal aligned relation with the joint sealed as at 116 and with the ends sealed as by plates 120 welded to the upper faces of both the upper and lower members forming the units, the upper members being somewhat shorter than the lower members. Two slightly different forms are shown in the two Figures; in one the upper member fits within and is welded to the lower member which carries the lip and channel 103, 104 for engaging adjacent units; in the other these engaging members are carried by the upper member. These units may alternate with the cellular units described in Specification 420,062 and they may form part of the air distributing means of the complete air conditioning system of Specification 787,565.
Patent GB-391510-A (GB)
Title: Improved submarine cable insulating materials
IPC: H01B7/14
Filed: 1931-11-04
Abstract: Thermoplastic unvulcanized insulating compounds suitable for deep-sea cables, containing rubber, gutta, balata and a plasticizer such as wax, are preserved by the addition of small quantities of an aryl substituted b  naphthylamine, e.g. phenyl b  naphthylamine, aldol a -naphthylamine (Age Rite Resin), sym di-b -naphthyl p-phenylene diamine (Age Rite White), diphenyl ethylene diamine (Stabilite), acetaldehyde ethylene diamine (V.G.B.), or an aryl substituted a -naphthylamine, e.g. phenyl-a -naphthylamine.  Other antioxidants conferring inferior electrical properties, but suitable for use in the air, are a mixture of organic bases and b -naphthol (Albasan), and diamino diphenyl amine (Oxynone).
Patent GB-520487-A (GB)
Title: Improvements in or relating to the control of battery-charging generators for use invehicle installations
IPC: H02J7/22
Filed: 1938-10-24
Abstract: 520,487. Charging and discharging batteries; automatic control systems. BOSCH GES., R. Oct. 24, 1938, No. 30631. Convention date, Oct. 23, 1937. [Class 38 (iv)] Electromotive force. - A variable-speed generator 1 charging a battery 5 in a vehicle installation is provided with a cut-out 4 and has an automatic voltage regulator 2 the setting of which is adjusted by a temperature-responsive switch 3 so as to reduce the generator voltage when the temperature of the battery exceeds a predetermined value, the change-over .to lower voltage taking place at a substantially higher temperature than that at which change-over in the reverse direction occurs. In Fig 1 the regulator 2 is of the vibratory type periodically short-circuiting a resistance 7 in series with the generator shunt field 6. A main shunt winding 8 on the regulator is opposed by an auxiliary shunt winding 9 the excitation of which is controlled by contacts 15, 16 on the temperatureresponsive switch 3. The switch 3 has a bimetallic strip 13 arranged to move a snap spring 14 to the left at a temperature substantially higher than that at which it moves it to the right. The spring 14 carries the contact 15 which in the right hand low temperature position co-operates with the fixed contact 16 to energize winding 9 and raise the voltage setting of the regulator. In alternative arrangements switch 3 may influence a part of winding 8, a resistance in series with winding 8, or a shunt winding on the regulator assisting winding 8; to alter the regulator setting. The regulator may also be provided with a current coil. In Fig 2. (not shown) a resistance fitted in series with the lighting section of the load to protect it against excessive voltage is short-circuited by another pair of contacts on switch 3 when the latter is in the high temperature low voltage position.
Patent GB-427980-A (GB)
Title: Improvements in or relating to vacuum tube bases and pins therefor
IPC: H01R13/04
Filed: 1933-11-04
Abstract: 427,980. Making electric fittings. MINER, A. W., 21, Frederick Street, Waterbury, Connecticut, U.S.A. Nov. 4, 1933, No. 30712. [Classes 83 (ii) and 83 (iv)] [See also Group XL] Flanging.-A contact pin for vacuum tube bases is drawn from a flat metal blank as a rigid seamless tubular member with continuous unbroken side walls and having an outwardly extending integral upset bead around its outer wall. Fig. 9 shows a die for producing the bead. The blank 23 is confined by the rod 27 and the blocks 24, 25. When pressure is applied to the plunger 28 the tube is forced into the recesses 26. The bead may be at one end or at any intermediate point on the tube. The opening at the lower end may have a rounded or bevelled edge or may be turned in to form a smaller opening than the bore of the tube. The upper end may be open or closed by a thin wall. In the latter case the upper end of the pin may be pierced by suitably shaped plungers 42, Fig. 17, during the process of moulding the base, when a tapered opening 43, Fig. 1, is formed in the upper end.
Patent GB-481764-A (GB)
Title: Improvements in electric regulating switches
IPC: H01H19/56
Filed: 1936-11-11
Abstract: 481,764. Regulating switches. ENGLISH ELECTRIC CO.. Ltd., and BOURNE, C. A. Nov. 11, 1936, No. 30802. [Classes 38 (iii) and 38 (v)] An electric regulating switch has a contact brush which can be moved from one stationary contact to another, co-operation between the brush and a contact, of which one is a yielding spring-pressed member, moving the latter to effect separation of the contacts in a direction transverse to that in which the brush moves from contact to contact. Fig. 1 shows a number of contact studs 4 mounted on a face-plate 3 from which a pivot 2 projects. On pivot 2 is mounted an arm 1 with which are integral four lugs 1c which provide a means of fixing a handle for rotating the lever, and a lug 1b which forms an anchorage for one end of a spring 8. The spring 8, being under tension holds a renewable contact 6 against a contact stud 4 by attempting to rotate a lever 5 which lies in a fork in the arm 1 about a pivot 7 located in a V-notch in the prongs of the fork. A pair of insulated rollers 9 are also mounted on the same end of arm 5 as the contact 6, in such a manner that when the arm 1 is rotated about pivot 2 the contact 6 first slides circumferentially relative to a stud 4, and then breaks the connection by a radial movement when the rollers 9 engage with the stud. Contact 6 then connects with the next stud with a radial motion, followed bv a circumferential movement as the rollers 9 leave engagement with the stud. The Specification describes various relative dispositions of contact 6, and rollers 9, including one which permits of rotation of the arm 1 in one direction only, and also further types of contact 6 such as notched and rolling.
Patent GB-1467361-A (GB)
Title: Radiographic techniques
IPC: A61B6/02
Filed: 1975-06-23
Abstract: 1467361 Radiographic apparatus EMI Ltd 23 June 1975 [12 July 1974] 30886/74 Heading H4F The internal structure of an opaque body 1, e.g. a mine resting on the sea bed or an oil or gas carrying pipe on or set into the sea bed, is investigated by scanning both angularly and translationally in a plane relative to the body a source 3 emitting a pencil like beam of X- or γ-radiation and a detector 4 (e.g. an annular detector) which detects radiation scattered from the body, signals indicative of the absorption suffered by the radiation with the beam in each of the plurality of different positions in the plane relative to the body being derived from the resulting detector output signals obtained during the scanning and utilized to provide a representation of the internal structure of the body. The arrangement and method of operation is similar to that described in Specification 1,283,915, scattered instead of transmitted radiation being detected. The detector 4 may comprise several detectors distributed around the accessible side of the object. If the object has a metal case it is preferable to focus the detector at the interior of the side of the casing remote from the source, e.g. using collimators. As shown the source/detector combination is moved parallel to a diameter of a ring member 5 by reversible motor 6. The ring member is supported on legs 10, 11 and manually rotatable through bearing surfaces 14, 15 by hand wheel 16, the angle of inclination of rod 9 being indicated on a dial in gear-box 18. In operation the ring member 5 is indexed through for example 2 degrees between each transverse scan of the source/detector combination, the output signals and positional information being recorded 20. To analyse other planes of the body 1, e.g. oblique planes, the ring member is tilted about a central axis lying in the plane of the drawing.