baber/WOPTO huggingface dataset:
Patent GB-1491041-A (GB)
Title: Pipe bend
IPC: F16L43/00
Filed: 1974-10-21
Abstract: 1491041 Sheet forming HOECHST AG 21 Oct 1974 [24 Oct 1973] 45382/74 Heading B5A [Also in Division F2] A one-piece plastics pipe-bend 10<SP>1</SP> in the shape of a portion of a hollow ring is open or overlapping along its innermost arc, the pipe bend 10<SP>1</SP> having been formed by bending from an inherently dimensionally stable shell-type body 10 having no re-entrant curves, the pipe bend 10<SP>1</SP> also being inherently dimensionally stable in its bend conformation. Thus through the forms 10, 10<SP>1</SP> may be interconverted, neither form tends to change shape by itself. The shell-type body 10 is made from plastics film by deepdrawing or by blow moulding, the latter yielding a flask-like structure composed of two bodies 10 joined along edges 28. Sufficient stability is conferred upon the body in the bend state 10<SP>1</SP> by thermal treatment of the material in that conformation. Alternatively, a complete torus may be manufactured and then divided into segments 10<SP>1</SP>, which are opened out and heattreated in the shell-type form 10. To increase stability in the bend state 10<SP>1</SP>, a corrugation 14 may be provided to extend along the outermost arc of the ring in the bend conformation 10<SP>1</SP>, or the body 10 may be formed in such a shape that its corresponding bend state 10<SP>1</SP> has at least the mid-portions of its outermost and innermost arcs on different centres of curvature, preferably such that the radial distance between the arcs is less at the mid-portion of the bend than at the ends. Extended areas 12 of the body 10 provide for overlap along the innermost arc of the bend 10<SP>1</SP> where engaging means such as complementary notches or press studs may be utilized.
Patent GB-1243386-A (GB)
Title: Improvements in or relating to electrophotographic powder developers
Inventor: STEINER PETER
IPC: G03G9/087
Filed: 1968-09-24
Abstract: 1,243,386. Powder developer. GAF CORP. Sept.24, 1968 [Oct.6, 1967], No.45397/68. Heading G2H. A powder developer for electro-photography comprises a carrier e.g. iron particles, a toner which has been prepared by fusing a thermoplastic resin other than polystyrene and a coloring agent, cooling, adding a styrene monomer selected from styrene, alpha-, meta-, and para-methyl styrene, alpha-, meta- and para-halo styrenes, 1,1- diphenyl ethylene and cis and trans-stilbene, polymerizing the styrene and grinding the toner mixture to fine particles. The polystyrene amounts to 2 to 12% of the toner mix. The thermoplastic resin may be a hydrocarbon resin, shellac, rosin, a rosin ester, wood rosin or a terpene and the toner mix may comprise sulphur and zinc oxide.
Patent GB-1447697-A (GB)
Title: Production of azonitriles
IPC: C07C255/65
Filed: 1974-10-21
Abstract: 1447697 Azonitriles; hydrazonitriles WAKO PURE CHEMICAL INDUSTRIES Ltd 21 Oct 1974 45413/74 Heading C2C Hydrazonitriles and azonitriles are obtained by reacting a ketazine of Formula II with HCN in the presence of as catalyst at least one salt of Zn, Sn, Fe, Cu, Al, Sb, Te, Bi and Ti to give the corresponding hydrazo compound of Formula III and then optionally oxidizing the latter to the corresponding azonitrile of Formula I wherein R<SP>1</SP> is C 1-6  alkyl, phenyl, optionally substituted benzyl, C 3-6  cycloalkyl, C 1-4  alkoxy- (C 1-4 )alkyl, or carboxy-(C 1-3 )alkyl and R<SP>2</SP> is C 1-4  alkyl or R<SP>1</SP>, R<SP>2</SP> and the common carbon atom form a cycloalkyl group. Specified catalysts are the sulphates, chlorides, bromides, acetates, nitrates and oxalates of the above metals (e.g. ZnCl 2 , AlCl 3 , AlBr 3 , FeCl 3 , SnCl 4 , SnCl 2 .2H 2 O, ZnAc 2 , TeCl 4 , BiCl 3 , SbCl 5 , TiCl 4 , ZnSO 4 .2H 2 O, Fe(C 2 O 4 ), Zn(NO 3 ) 2 , TeCl 3  and ZnBr 2 ). The hydrocyanation is preferably effected at 10-40‹ C. for 1-10 hours and under anhydrous conditions generally using 0À1-10 wt. per cent of catalyst based on the ketazine. The oxidation is preferably carried out using a halogen (e.g. Cl 2 , Br 2 ) at -20‹ to +40‹ C. The examples prepare azonitriles and the corresponding hydrazonitriles starting from methylisobutylketazine, methyl-2-methoxyiso - butylketazine, methylisoamylketazine, diisopropylketazine, cyclohexanoneazine, methylbenzylketazine and methyl-2-carboxyethylketazine. Other specified reactants (II) are those in which R<SP>2</SP> is CH 3  and R<SP>1</SP> is CH 3 , C 2 H 5 , n-C 3 H 7 , i-C 3 H 7 , neo-C 5 H 11 , cyclopropyl, cyclohexyl, phenyl, 4-chlorobenzyl or 4-nitrobenzyl; or R<SP>1</SP> and R<SP>2</SP> are both C 2 H 5 , n-C 4 H 9  or i-C 4 H 9 ; or R<SP>1</SP>R<SP>2</SP>C form a cycloheptyl group. The azonitriles of Formula I are polymerization initiators.
Patent GB-1162350-A (GB)
Title: Improvements in or relating to Sliding and Tiltable Hatch Covers
IPC: B63B19/18
Filed: 1967-10-06
Abstract: 1,162,350. Hatch covers. MACGREGOR COMARAIN. 6 Oct., 1967 [6 Oct., 1966; 24 Feb., 1967], No. 45663/67. Heading B7S. In a hatch cover comprising overlapping cover sections 7, 71, 7<SP>11</SP> the cover sections have two lateral pairs of longitudinally spaced bearing points 26, 17, each forward bearing point 26 respectively engaging runways 10 which are above the runways 9 respectively engaged by the rear bearing points 17. In another embodiment each forward bearing point is an intermediate tipping roller and each rear bearing point is a rear end wheel.
Patent GB-1451373-A (GB)
Title: Longwall roof support unit of the shield type
IPC: E21D23/00
Filed: 1973-10-03
Abstract: 1451373 Mine roof supports BOCHUMER EISENHUTTE HEINTZMANN & CO 3 Oct 1973 [16 Oct 1972] 46277/73 Heading E1P A mine roof support unit comprises an arcuate coving shield 7 articulated to a sloper and to a roof plate, the shield being supported by one or more struts 10 and having means 18 to close the gap 15 between adjacent units in a longwall system. The means 18 consists of side plates 14, 14a which are re-inforced as by plates 20, 20a; the plate 14 being fixed and the plate 14a being loaded as by a spring 17 or a hydraulic jack.
Patent GB-992409-A (GB)
Title: A method of and electro-magnetic actuating apparatus for controlling fuel burners
IPC: F23N5/20
Filed: 1961-12-27
Abstract: 992,409. Controlling burners. LA TELEMECANIQUE ELECTRIQUE. Dec. 27, 1961 [Dec. 26, 1960], No. 46281/61. Heading F4T. [Also in Division G1] A safety control device for a burner comprises a photo-resistance device 5 responsive to the burner flame, a time delay device 3, a call electromagnet A adapted to close contacts C 1 , C 2  for an igniter 2 and contacts M 1 , M 2 , M 3  for a fuel supply motor 1 and a holding electromagnet M adapted to hold closed the contacts M 1 , M 2 , M 3  and to open contacts 23 to de-energize the call electromagnet A. On a demand for heat a thermostat 4 closes to energize the call electromagnet A from an A.C. source 6. The armature 10 of the call electromagnet then closes contacts C 1 , C 2  supplying a spark gap 2 and moves the armature 11 of the holding electromagnet M to a position just short of the end of its travel to close the motor contacts M 1 , M 2 , M 3  and open contacts 22 bridging the coil of the holding electromagnet M. The call electromagnet also raises a slide 17 and a stirrup 16 against the action of a spring 18 to allow a diaphragm 14 of the time delay device 3 to relax as air is drawn in through a regulable throttling valve 19. The diaphragm displaces a push-member 15 which at a certain position actuates quick break contacts 9 to de-energize the system and energize a warning device 7. If ignition occurs the photo-resistance 5 allows energization of the holding electromagnet M and the armature 11 is attracted to the end of its travel and opens the contacts 23 to de-energize the call electromagnet A. The armature 10 is thus released and opens the spark gap contacts C 1 , C 2  and allows the spring 18 to return the diaphragm 14 of the time delay device to its initial position. In a modification, Fig. 3, a relay having two contra-directed windings RA 1 , RA 2  is adapted to control contacts RA energizing the call contactor A. The windings RA 1 , RA 2  are supplied by a bridge rectifier 27. When the thermostat 4 closes, the winding RA 1  is energized and closes contacts RA to energize the call electromagnet A which, as in the first embodiment, operates the delay device 9 and energizes the fuel supply motor 1 and the spark gap 2. If ignition occurs a current flows through the second winding RA 2  and the relay contacts RA open since the windings RA 1  and RA 2  oppose each other. The call electromagnet A is thus de-energized and the holding electromagnet M is energized to maintain the energization of the fuel supply motor 1.
Patent GB-1513938-A (GB)
Title: Determination of the concentration ratio between two components of a mixture of substances
IPC: G01J3/433
Filed: 1975-11-11
Abstract: 1513938 Mixture analysis by spectral absorption BALZERS PATENT-UND BETEILIGUNGS-AG 11 Nov 1975 [20 Nov 1974] 46469/75 Heading G1A In a method of photo-electrically determining the ratio of the concentrations of two components of a mixture, absorption measurements are made in a portion of the spectrum which lies between the absorption maxima of the components and in which the mixture absorption exhibits a minimum. This produces a result which is largely independent of the absolute values of the concentrations. In Fig. 2 the transmission of two components A, B is plotted against wavelength; the transmission of the mixture is shown by a solid line, and there is a point of minimum absorption at M. Absorption measurements are made in the region of M by one of two methods. First method: the absorption is measured at three wavelengths indicated by vertical dashed lines in Fig. 2, the intensity of transmission at these wavelengths being I 1 , I 2 , I 3  from left to right. The concentration ratio is determined from I 3 -I 1 /(I 3 -I 2 )-(I 2 -I 1 ). The exact wavelengths used are preferably chosen so that at a particular concentration ratio where the maximum accuracy of measurement is desired, I 3 =I 1 . Second method: the wavelength of the radiation used to illuminate the mixture is swept through a spectral region including the absorption minimum and the first and second derivatives of transmitted intensity with respect to wavelength are found. The ratio of these derivatives corresponds to the concentration ratio. As in the first method the spectrum is chosen so that at a concentration ratio where maximum sensitivity is desired, the first derivative is zero. An apparatus for effecting the second method using a pivoted interference filter to scan the wavelength, and having synchronous detectors to produce the derivatives, is described, Fig. 6 (not shown). Both methods are applicable to solid, liquid or gas mixtures, and produce results independent of temperature or pressure. The results are also largely independent of source intensity variations and the presence of other components in the mixture. Vehicle exhaust gases can thus be tested by passing light directly behind the exhaust pipe.
Patent GB-982346-A (GB)
Title: Electrically-operated wagon tilting apparatus
IPC: H02P3/04
Filed: 1962-12-10
Abstract: 982,346. Rotary tipplers. SIEMAG MASCHINEN-UND STAHLBAU NETPHEN G.m.b.H. Dec. 10, 1962 [Dec. 18, 1961], No. 46488/62. Heading B8E. [Also in Division H2] A wagon tilting apparatus comprises tilter receptacle 1 driven by electric motor 5 associated with coupling 7 and reduction gear 10, the coupling being combined with a brake having jaws 8 and electro-hydraulic actuator 9. The output drive of the reduction gear is connected through coupling 11 to shaft 12 having pinion 15 which engages driving ring 16. A controller 19 for the motor is also driven from shaft 12. The receptacle 1 is adapted to be driven through one revolution, and, when it is returned to its original position, a hydraulicallyoperated bolt actuates limit switch 25 to prevent automatic initiation of another operating sequence. At the same time, the bolt releases the wagons within the receptacle. The motor has high and low-speed windings, changeover to the low-speed winding being effected by the controller 19 as the tilter approaches an end-position.
Patent GB-1135460-A (GB)
Title: Photoconductive device and method
IPC: C23C14/24
Filed: 1966-10-18
Abstract: 1,135,460. Image pick-up tubes; photoconductive elements. RADIO CORPORATION OF AMERICA. 18 Oct., 1966 [15 Nov., 1966], No. 46631/66. Headings H1D and H1K. [Also in Division C7] In a photo-conductive element, such as a target for a pick-up tube, comprising an electrode associated with a photo-conductive layer consisting primarily of selenium and tellurium, the tellurium content decreases uniformly from the electrode face to the opposite face. Typically the electrode is a tin oxide or rhodium deposit on a glass face plate and the photo-conductive layer, which preferably contains arsenic, abuts it. Alternatively, a layer of low work function material such as pure selenium, or caesium or cerium as metal, oxide or selenide is provided between the electrode and the photo-conductor and forms a PN junction with the latter. The vitreous structure of the layer may be stabilized by a layer of suitable material at one or both faces. Gold, silver, palladium, iridium, antimony, germanium, gallium and the oxides of gallium and germanium may be used for this purpose on the electrode side and germanium, germanium oxide and antimony trioxide or trisulphide on the other. The target may be made by vapour depositing the layers in sequence on the glass face plate, the layer thicknesses being continuously monitored. Grading of the photo-conductive layer is achieved by introducing pellets of a selenium-telluriumarsenic mixture into a heated evaporation boat at a varying rate so that initially each pellet is completely evaporated before the next is introduced. Later, the rate is increased so that the composition of the layer is then determined to any increasing extent by the greater volatility of the selenium. Grading the tellurium content gives the layer as a whole a panchromatic response without sacrificing the high overall dark-resistivity and good resolution characteristic of a selenium layer.
Patent GB-1285914-A (GB)
Title: Four-axis milling machine, in particular for identical or symmetrical pieces such for example as moulds
IPC: B23Q1/62
Filed: 1969-09-23
Abstract: 1285914 Milling machines INDUSTRIE PIRELLI SpA 23 Sept 1969 [25 Sept 1968] 46697/69 Heading B3K  A milling machine comprises at least one rotary or slidable workable, a vertically movable slide 17 carrying a horizontally displaceable slide 6 which pivotally supports a tool-carrying arm 7 for pivotal movement about a horizontal axis XX, the tool or tools being mounted at the end(s) of the arm so that the tool tip lies on the axis XX. Rotary work-table 4 is mounted for vertical adjustment by means of a screw threaded sleeve 14 so that the workpieces on both tables 4, 5 can be bought to the same level and both work-tables have self centring jaws 8 thereon. Pivotal motion of the tool carrying arm 7 is effected by screw-actuated displacement of a further slide 27 mounted on the slide 6 and connected to a sector of the arm 7 by crossed tapes and/or gear teeth. Hydraulic motors power the tools and slide movements. The arm 7 is displaceable from the vertical to a position 45 degrees on either side and the tools may be mounted with their axes horizontal or vertical thereby extending the effective range of angular movement of the tool spindles to 180 degrees. The tool may be controlled numerically, by punched or magnetic type or by copying means co-operating with a template.
Patent GB-1389610-A (GB)
Title: Surfacewave devices
IPC: H03H9/05
Filed: 1972-10-11
Abstract: 1389610 Acoustic surface wave devices MARCONI CO Ltd 31 Aug 1973 [11 Oct 1972] 46752/72 Heading H3U An acoustic surface wave device, e.g. a delay line or a frequency or pulse compression filter, comprises a body 10 of piezoeleetrio material with transducers on its surface 18, the body forming one wall of a gas-tight enclosure around the transducers. As shown the transducers are of comb form with bus-bars 20, 21 extending outside the enclosure for connection, and the enclosure is evacuated or filled with an inert gas. The enclosure side walls 14 are of epoxy resin or polyethylene and cover 12 is of the same material as the body 10, e.g. quartz, to minimize thermal expansion problems. The inner surface 16 of the cover has a conductive coating to confine the magnetic field and reduce crosstalk. The cover overhangs the walls 14 (Fig. 3, not shown) so that connection may be made to the coating.
Patent GB-1403388-A (GB)
Title: Method of manufacturing soluble copolyers of polyhydric alcohol methacrylates and acrylates
IPC: C08F2/14
Filed: 1972-10-11
Abstract: 1403388 Soluble copolymers of polyhydric alcohol (meth)acrylates CESKOSLOVENSKA AKADEMIE VED 11 Oct 1972 [14 Oct 1971] 46789/72 Heading C3P Soluble copolymers of polyhydric alcohol mono(meth)acrylates (the term "soluble" is used to mean that the copolymers are soluble, at least, in methanol) are prepared by forming a polymerization solution in a solvent of a polyhydric alcohol monomethacrylate and/or monoacrylate and more than zero but less than 0À02% by volume (based on the total volume of the polymerization solution) of a corresponding polymethacrylate or polyacrylate as crosslinking agent, effecting free radical precipitation polymerization of the monomer solution, and separating out discrete particles of polymer from the polymerization product, the solvent used being such as to dissolve all the monomer components used but neither dissolving nor substantially swelling the polymer produced, and the concentration of the crosslinking monomer in the solvent being below the critical concentration (as defined in the Specification). Preferably, the desired concentration of crosslinking monomer is maintained by adding the monomers continuously or incrementally to the polymerization mixture, at a rate less than the rate of polymer precipitation. The polyhydric alcohol from which the monomers are derived may be, for example, ethylene glycol, diethylene glycol, triethylene glycol and higher polyethylene glycols, 1,2-propylene glycol, 1,4-butylene glycol, glycerol, pentaerythritol, mannitol or sorbitol. Other monomers may optionally be copolymerized with the polyhydric alcohol (meth)acrylates, e.g. (meth)acrylic acid and amides and esters thereof, itaconic acid, citraconic acid, N-vinyl pyrrolidone and derivatives thereof, (meth)acrylonitrile, styrene, vinyl acetate and maleic anhydride. Suitable solvents for use in the invention include aromatic hydrocarbons, halogenated aromatic or non-aromatic hydrocarbons, esters of aliphatic or aromatic carboxylic acids, ethers and cyclo-ethers, ketones and cycloketones, tetraethyl silicon and silicone oils; a proportion of aliphatic or cycloaliphatic hydrocarbons may optionally be included. Initiators which may be used in the polymerization process include benzoyl peroxide, azobisisobutyronitrile, diisopropyl percarbonate, cumene hydroperoxide and t-butyl peroctoate.
Patent GB-1167014-A (GB)
Title: Improvements in and relating to Pneumatic Tyres.
IPC: B60C9/26
Filed: 1966-10-19
Abstract: 1,167,014. Pneumatic tyres. MICHELIN & CIE (Compagnie Generale des Etablissements Michelin). 19 Oct., 1966 [19 Oct., 1965], No. 46843/66. Heading B7C. Tyre wear is reduced by fitting, coaxially on a vehicle, a pair of tyres having superimposed cord plies in their crowns and of identical size and construction except that the cords in corresponding plies are orientated oppositely in the two tyres, the cords 6 of the radially outermost ply of the right-hand tyre 1, Fig. 3, being orientated to the left, and the cords 6 of the corresponding ply of the left-hand tyre 1, Fig. 2, being orientated to the right. The need to manufacture different tyres is avoided by using tyre 1, Fig. 6, which has a full-width ply 8 and half plies 7, 9 respectively below and above ply 8. Two such tyres are mounted coaxially on a vehicle with ply 9 inboard on the right-hand tyre and outboard on the left-hand tyre.
Patent GB-1027731-A (GB)
Title: A burner for liquid fuel
IPC: C21B7/16
Filed: 1962-12-12
Abstract: 1,027,731. Liquid fuel burners. MOBIL OIL FRANCAISE S.A. Dec. 12, 1962 [Dec. 22, 1961], No. 46929/62. Heading F4T. A liquid fuel burner, Fig. 1 (not shown), especially for mounting in the airstream f1 flowing in a blast furnace tuyere, comprises a liquid cooled fuel pipe 1 having a discharge nozzle 3 surrounded by a coaxial air baffle 4 which intercepts a portion of the airstream and deflects it past the nozzle 3 to atomize the fuel discharged therefrom. The baffle 4 is keyed on to the pipe 1 and may have the shape of a hollow convergent truncated cone or pyramids, or of a convergent-divergent tube, Fig. 2 (not shown). A swirling motion may be imparted to the air stream passing the nozzle 3 by fins on the inner surface of the baffle 4 or by helical vanes on the outer surface of the pipe 1. The pipe is cooled by water flowing through a double-walled cooling jacket 6, 6a surrounding the pipe and having an inlet 7 and an outlet 8. The outer cooling jacket wall 6 is connected by ribs 9 to the baffle 4.
Patent GB-1129157-A (GB)
Title: A rotor for a rotary wing aircraft
IPC: B64C27/35
Filed: 1966-10-20
Abstract: 1,129,157. Resilient mountings. BOEING CO. 20 Oct., 1966 [20 Oct., 1965], No. 47003/66. Heading F2S. [Also in Division B7] A resilient mounting attaching a helicopter rotor blade 15, Figs. 2, 3, to the rotor hub is subjected to both axial and shear loading. The mounting may comprise two parts 22, 23, each made up of alternately resilient layers 24 (e.g. of rubber) and rigid plates 25 (e.g. of metal). The innermost plate 25a may carry a stud 31 which acts as a pivot in the spherical part 18 of a pin 16 on which the blade is mounted, however cyclical relative movement about these studs 31 is caused by links 32, 27. The part 23 may be omitted. In an alternative embodiment, Fig. 5, the blade 41 is carried by a one-piece resilient mounting 54, there being a conical or pyramid-shaped part 60 which can be moved into a mating hole 55 to unload the bearing.
Patent GB-1197928-A (GB)
Title: High Power Electric Torch
Inventor: WORTH THE RIGHT HONOURABLE DAV
IPC: F21V17/00
Filed: 1967-10-17
Abstract: 1,197,928. Hand lamps. D. B. POLLOCK, VISCOUNT HANWORTH. 16 Jan., 1969 [17 Oct., 1967], No. 47155/67. Heading F4R. A hand lamp comprises a housing 1 containing a high-power lamp bulb 13, a reflector 7 and a switch 5 for connecting the bulb to a source of power, one or more passageways being provided through the lamp for the forced circulation of cooling air. The bulb may be of the quartz iodine type and the source of power may be external to the housing, e.g. a vehicle battery, or within the housing, e.g. a small rechargeable battery. The reflector 7 and a lens 2 are held by an annular member 8 having gaps (12, not shown) through which air can be drawn into the housing, the forced circulation being caused by a fan 22 driven by a motor 21 connected in parallel with the bulb. Holes 28 at the bottom of the housing allow the air to escape. In a modification the forced circulation is caused by external means, e.g. the suction provided by an internal combustion engine. An additional lowpower bulb may be provided in the housing for use independently of the bulb 13.