baber/WOPTO huggingface dataset:
Patent GB-1002010-A (GB)
Title: Artificial stone building elements
IPC: E04C1/40
Filed: 1963-11-14
Abstract: Artificial stone building elements consist of a mixture of 60 to 75% by weight of one or more mineral fillers and a vinyl chloride polymer or copolymer free from plasticizer.  Specified fillers are quartz meal, terrazo flour, powdered marble, powdered slate, talc, kaolin, silica, titanium dioxide and carbon black. Specified elements are wall slabs, tiles, window sills, stairway risers and treads, gravestones and acid-resistant slabs for laboratory table tops, tanks and floors.
Patent GB-943954-A (GB)
Title: New steroid compounds, and processes for their preparation
IPC: C07J5/00
Filed: 1960-12-22
Abstract: The invention comprises 17b -hydroxy-18-nor-pregna-3, 11, 20-trione derivatives of the general formula: <FORM:0943954/C2/1> in which when the ring A is saturated the hydrogen atom at the 5-position is b -orientated and X represents a hydrogen atom and Y represents a bromine atom or alternatively X represents a bromine atom and Y represents a hydrogen atom, and when ring A is unsaturated there exists a double bond either between the 1, 2-positions and the hydrogen atom at the 5-position is b -orientated or the double bond exists between the 4, 5-positions, and processes for the preparation thereof by brominating 17b -hydroxy-18-nor-pregna-3, 11, 20-trione to yield a mixture of 2-bromo-17b -hydroxy - 18 - nor - pregna-3, 11, 20-trione and of the isomeric 4-bromo-17b -hydroxy-18-nor-pregna-3, 11, 20-trione, and subjecting the mixture thus obtained to dehydrobromination so as to form a dehydrobromination product containing a mixture of 17b -hydroxy-18-nor-pregn-1-ene-3, 11, 20-trione and the isomeric 17b -hydroxy -18-nor-pregn-4-ene-3,11,20-trione. The bromination step may be effected with bromine in the presence of hydrobromic acid, and the dehydrobromination step with lithium bromide/lithium carbonate in N,N-dimethylformamide. Specification 943,953 also is referred to.
Patent GB-1476444-A (GB)
Title: Non-woven sheet
IPC: D06M15/227
Filed: 1974-10-21
Abstract: 1476444 Non-woven polyolefin sheets E I DU PONT DE NEMOURS & CO 21 Oct 1974 [24 Oct 1973] 45478/74 Heading B2E [Also in Division D1] A non woven sheet suitable for use in making disposable garments, bags, dust cloths, tablecloths, drop cloths and draperies comprises film fibrils of a linear polyolefine, e.g. polyethylene, polypropylene or a copolymer of 97% ethylene and 3% octene-1 and one side of this sheet comprises a water-repellent continuous layer of fused film fibrils coated with a continuous layer of a hydrophobic polymer, e.g. styrene/butadiene copolymer or plasticised polyvinyl, chloride, while the other side of the sheet has areas of non fused film-fibril elements to which a wetting agent is adsorbed. Suitable wetting agents include alkyl aryl polyether alcohols, the diethylcyclohexylamine salt of lauryl sulphate monoester and quaternised alkylolamine esters. The styrene butadiene polymer may be carboxylated. Such a sheet may be prepared from a cold consolidated fibrous non woven sheet of film fibril elements by subjecting it to heat and pressure during passage between two rollers, preferably providing an embossed pattern on the surface. Usually one roller is heated and the other has a resilient surface and is not heated. This produces a sheet one side of which has film fibril elements fused together to form a continuous layer. The porous side of the sheet may be passed between embossing rollers under less severe conditions. The polymer coating is applied to the sheet, e.g. as an aqueous latex, the coating is dried and then the wetting agent is applied.
Patent GB-1479617-A (GB)
Title: Apparatus for handling flexible tubular material
IPC: B65B61/00
Filed: 1975-10-22
Abstract: 1479617 Rollers A H MEAD 22 Oct 1975 [22 Oct 1974] 45717/74 Heading F2U [Also in Division B8] A roller for use in shirring a plastics net on to a former (see Division B8) comprises two end plates 4a and straps 13 of natural or synthetic rubber slightly stretched between the end plates. The ends of the strap 13 are bolted to the end plates. Each strap may be 1¢ inch wide, “ inch thick and 12 inches long with the end plates separated by 9 inches.
Patent GB-1242404-A (GB)
Title: Improved alarm device
Inventor: EVERITT KENNETH JOHN
IPC: G08B13/16
Filed: 1968-09-26
Abstract: 1,242,404. Automatic fire and burglar alarms. K. J. EVERITT, and D. P. WHITE. 22 Sept., 1969 [26 Sept., 1968], No. 45782/68. Heading G4N. [Also in Division H4] An intruder or fire alarm comprises a generator 4-6 of ultrasonic waves projected into an area 1 and a receiver unit 7-10 detecting a change in amplitude of reflected ultrasonic waves, due to the presence of an intruder or fire convection currents, to stop or start an oscillator 12 whose output is detected by a tuned circuit 14a to operate an alarm and/or recording device 16. The generator 4, 6, receiver unit 7-10, and oscillator 12 are disposed in a single housing connected to the mains supply. The receiver comprises a multistage, A.C. coupled tuned amplifier (Fig. 2, not shown), which amplifies the amplitude-modulated reflected waves and feeds them to an envelope detector comprising a capacitor and a transistor. The envelope, representing the changes in amplitude, is amplified further in a Darlington Pair and then rectified to operate a relay or transistor switch. The relay or transistor switches on or off the L-C oscillator whose output frequency of 100-260 Hz is transmitted across the mains supply to a detector unit, Fig. 3. In an arrangement where the oscillator is switched on by the changes in amplitude of the received signal, the detector unit comprises two amplifiers, one 14a tuned to the oscillator frequency, and the other 14b tuned to another frequency or to all frequencies except the oscillator frequency. Their outputs are rectified and fed in opposition to an alarm operating relay A2, thus ensuring that spurious signals, which will be detected in both amplifiers, are balanced out and cannot operate the alarm. A plurality of oscillators operating at different frequencies and associated with apparatus protecting different areas may be connected to a single alarm. In an arrangement where changes in amplitude of the received signal turn the oscillator off, amplifier 14b in the detector is removed, diode D is reversed, and a resistor R2 is inserted.
Patent GB-1204906-A (GB)
Title: Apparatus for use with a teaching program sheet
Inventor: KUNERT HEINZ
IPC: G09B3/04
Filed: 1967-10-06
Abstract: 1,204,906. Books, sheet holders; repeatedly usable writing surfaces. H. KUNERT. 6 Oct., 1967 [12 Oct., 1966], No. 45853/67. Headings B6A and B6P. [Also in Division G5] Apparatus, for use with a teaching programme sheet having questions and answers arranged in columns thereon, comprises an opaque slider having a cut-out or window through which a question can be viewed while the slider masks the corresponding answer, and a writing board from which writing can be repeatedly cancelled. As illustrated in Fig. 1 the slider 28 is mounted on a rail 26 attached to the writing board 22. One of a pad of programmed sheets is positioned between the slider and the board. The slider in use exposes questions in windows 32, 34 and the correct answer to one question in window 30. The slider may not have windows 30, 32, and may be extended as indicated by dashed lines. Movement of the slider back over a previously answered question will cause cancellation strip 38 to erase the associated answer previously entered on the board via an aperture 20 in the sheet. In an alternative apparatus (Fig. 5) a programme sheet 88 and writing board 94 are received in a support 80 on which the slider 102 is mounted. The cancelling strip 106 does not completely extend across the board and a separate cancelling device 96 is provided for columns 98. In a further embodiment (Fig. 3, not shown) the slider includes a cancelling strip which is movable in a direction transverse to the direction of movement of the slider. In this embodiment the slider is mounted on a rail attached to a cover of a book, a sheet being located between the rail and a further rail attached to the cover. The other cover is provided with a pocket for programmed sheets. A writing board from which markings can be erased by, for example, a chemically impregnated wiper may be used.
Patent GB-989790-A (GB)
Title: Improvements in or relating to telegraph systems
Inventor: GREEN NORMAN GEORGE
IPC: H04L25/22
Filed: 1961-12-21
Abstract: 989,790. Telegraphy, transistor circuits. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Dec. 17, 1962 [Dec. 21, 1961], No. 45882/61. Headings H3T and H4P. A telegraph code converter for converting single current D.C. signals into double current signals, includes a magnetic amplifier the output of which is biased to give double current signals. As shown, a low power oscillator cooperates with a transistor T, to produce an alternating current in a coil C of the transformer constituting the amplifier. This produces a corresponding current in a coil B which, when rectified at MR2, produces a steady positive current in a resistance R1. Input signals, either a fixed positive signal or zero, are applied to inputs L1, L2, and these are rectified at MR1 and fed to a coil A of the transformer. The positive signal induces sufficient current in the coil A to saturate the transformer and thus block the output from the coil B. Thus positive and zero currents at the inputs L1, L2 produce zero and positive currents in the resistance R1. A negative bias is applied through resistances R2, R3 to convert this output to double current signals.
Patent GB-1196027-A (GB)
Title: Improved Patterning System for Circular Knitting Machine.
Inventor: SUTTON JACK
IPC: D04B15/66
Filed: 1967-10-07
Abstract: 1,196,027. Inert switches. STIBBE MACHINERY Ltd. 11 Sept., 1968 [7 Oct., 1967], No. 45974/67. Heading H1N. [Also in Divisions D1 and G3] In a multifeed circular Jacquerd knitting machine for knitting multi-coloured patterned fabric (see Division D1) a pattern matrix comprises multi-position switches comprising cubes 195 pivoted on pins 196 which can be turned to present distinguishable, e.g. differently coloured, faces to produce a pattern representing the pattern to be produced. The edges of the cubes parallel to pins 196 are bevelled except for one part of their length which differs axially for each edge, bevels 195a, 195b leaving projections 195e, 195g at opposite ends while bevels 195c, 195d have projections 195g 195h at differing locations intermediate their lengths. Projections 195e, 195f, 195g, 195h actuate different pairs of contacts 197, 198 carried by spring leaves 199, 200, in succession if the cube is rotated through 360 degrees, but normally it will be moved to and fro according to the pattern required.
Patent GB-1327504-A (GB)
Title: Internal shoe drum brake
IPC: F16D65/14
Filed: 1971-10-04
Abstract: 1327504 Internal drum brakes SA DBA 4 Oct 1971 [28 Oct 1970] 46019/71 Heading F2E An internal shoe drum brake comprises two shoes having between two adjacent ends an hydraulic cylinder unit actuator connected by a unidirectional wear adjuster, the unit being pivotally connected to the shoe ends, and the other ends resiliently held against an anchor fixed to a backing plate, further applying means being provided between the other ends. The wear adjuster comprises a threaded spindle 68 fixed to the cylinder 62 of the unit engaging a nut 70, abutting a single piston 66 in its retracted position by a spring 78 through a thrust bearing 76. When the piston 66 is actuated and moves leftwardly, a sleeve 82 is also moved and travels a distance "A" equivalent to a predetermined piston travel, until it abuts the thrust bearing 76 and pushes the nut 70 axially, causing the nut to rotate. Upon piston return, the nut 70 is held against rotation by contact with a sleeve 88 which is held against rotation by location of a lug 90 in a slot 83 of the sleeve 82. The piston 66 and cylinder 62 are floating to equalize braking torque of the shoes 12, 14. The other ends of the shoes 12, 14 are held against a projecting hub 44 of a central spider by spring 42 and are also mechanically actuated by a lever 48 operating, through a spindle in the hub, a cam 50 with a nose. The nose contacts a projecting portion of a disc 54 having diametrically opposite lugs 60 which in turn force apart the shoe ends. This causes the shoe 12, when the direction of drum rotation is anti-clockwise, to engage the drum, causing a subsequent similar action for the shoe 14, through the floating piston and cylinder. The hydraulic cylinder unit may comprise two pistons.
Patent GB-1098958-A (GB)
Title: Improvements relating to electrical insulators
Inventor: VINCE PATRICK MICHAEL
IPC: H01B1/14
Filed: 1965-11-02
Abstract: A semi-conducting glaze for coating electrical insulators is composed of 74% calcium-alumino-silicate glaze base having as constituents Cornish stone, Feldspar, Ball clay, Quartz, Whiting, Barytes and Zinc Oxide, and 26% of a mixture of tin oxide containing 2 1/2 % antimony pentoxide, the whole being adjusted to a concentration of 32 ounces per pint for coating. The firing temperature is in the range 1050 DEG to 1300 DEG  C.  The molar proportions of antimony oxide to tin oxide in the glazing suspensions may suitably be 1 : 99 to 5 : 95 respectively, and the total weight of these oxides may suitably be 15% to 45% of the total weight of the solids in the glazing suspension.
Patent GB-1045793-A (GB)
Title: Improvements relating to electric power supply units especially for mains/battery operation
Inventor: WILSON JOHN FERGUS GRAHAM
IPC: H02M7/797
Filed: 1961-12-28
Abstract: 1,045,793. Transistor inverter oscillators. ELECTRIC & MUSICAL INDUSTRIES Ltd. Dec. 13, 1962 [Dec. 28, 1961], No. 46369/61. Heading H3T. [Also in Division H2] A power supply unit capable of providing a 300-0-300 volt output at terminals 8, 9, when energized either from a 12-volt D.C. supply at terminals 10, 13, or from a mains A.C. supply at 6, 7, comprises a push-pull transistor oscillator formed by a transformer 5 and transistors TR1, TR2 and including ganged switches S1 S2. With a D.C. input at 10, 13, and the switches in the position shown the transistors operate as active elements in the transistor oscillator. A.C. is derived across windings 1 and 5, that across the latter being rectified by diodes D1, D2, to give the 300-0-300 output. With an A.C. input at 6, 7, the switches are moved to their lower positions effecting shortcircuits across the emitter-base paths of the transistors. These then act as rectifiers providing a low direct voltage at 10, 13 in addition to the main output at 8, 9.
Patent GB-956345-A (GB)
Title: Cup dispensing mechanism
IPC: G07F13/10
Filed: 1962-12-12
Abstract: 956,345. Cup dispensers. INTERNATIONAL VENDING MACHINES Inc. Dec. 12, 1962 [Dec. 15, 1961], No. 46862/62. Heading B8S. FIG 1 Stacks of cups are housed in magazines 23 carried by turret 21 mounted on shaft 8 rotated by motor M. The stacks of cartons are thus circulated continuously whilst being held in magazines 23 which serve to keep the stacks upright but do not take part in the discharge operation. The bottommost cup of a stack is discharged by the co-ordination of rotating wheel I, fixed wheel O and pivoted levers 40. The moving ring I has four external threads 34, 35, 36 and 37 and carries the levers 40 each pivoted at 41. Levers 40 are influenced by springs 50 and carry followers 44 which engage stationary cam 17 to allow a bottom cup at the appropriate moment to fall under gravity. Stationary ring O carries a single internal thread 29. Turret 21 is removable for the insertion of fresh cartons and after insertion is slid back on to shaft 8 and makes engagement therewith at 27. Operation.-Magazines 23 are rotating; ring I is rotating; and ring O is stationary. The bottommost carton of a stack is therefore supported at both its edges externally by the thread of ring O and internally by the edge of a lever 40. The stack moves round urged by rotating magazine 23 so that the bottom carton rotates bodily between the two sets of threads. At the appropriate moment, the respective lever 40 is operated by its follower 44 to permit the bottom cup to fall between the two threads and be conducted downwards thereby to the discharge point. Thus every time that a follower 44 meets the cam 17 a bottom carton of the respective magazine is released for discharge. As the cup is discharged, it operates a switch to stop motor M.
Patent GB-1525407-A (GB)
Title: Piston and slipper arrangement and flow restricting insert therefor
IPC: F04B1/12
Filed: 1975-11-17
Abstract: 1525407 Fluid regulation DEERE & CO 17 Nov 1975 [25 Nov 1974] 47218/75 Heading G3H [Also in Division F2] A flow restricting insert 56 for use in a walled fluid flow passage has, or is adapted to form with the wall 54 of the passage, a fluid passage which includes a plurality of spaced cylindrical pockets 76 and a restrictive channel 78 between successive pockets 76, successive channels 78 being off-set from each other and each channel 78 being tangential to the pockets 76 it connects. The insert 56 is said to restrict fluid flow without the possibility of blockage by virtue of vortex flow conditions in the pockets 76.
Patent GB-1093522-A (GB)
Title: Burner system
IPC: G01N21/72
Filed: 1964-11-23
Abstract: 1,093,522. Spectral analysis apparatus. BECKMAN INSTRUMENTS Inc. Nov. 23, 1964 [Jan.21, 1964], No.47512/64. Heading G2J. In a burner system for spectroscopic analysis a solution of sample dissolved in a solvent is sprayed at 12 into a chamber 10 having a heating section for evaporating the solvent into a vapour and transforming the sample into an aerosol, and a condenser section 16 for condensing the major portion of the vapour so that a large concentration of sample aerosol is delivered to the burner 18. The sample dissolved in a solvent is supplied through duct 26 to the sprayer 12 and entrained in oxygen or air supplied at 27. The chamber 10 may be heated by an infrared heater 14 and the condenser section 16 cooled by water or other liquid passing through a surrounding coil 52 and a central cylinder 58. To allow the burner to be used with different fuels it may be constructed as in Specification 1, 093, 523. In a modification, Fig. 5 (not shown) the burner is lower so that the spectrometer does not need to be raised into alignment with windows 86 in the chimney 84.
Patent GB-1511519-A (GB)
Title: Apparatus for electrically monitoring closure of a lock
IPC: E05B45/08
Filed: 1975-11-19
Abstract: 1511519 Locks W JANK 19 Nov 1975 [20 Nov 1974] 47699/75 Heading E2A A switch 21 for indicating when a bolt 12 is shot is mounted behind the bolt keeper plate 16 and is operated by a lever 22 which is tilted by the bolt, Fig. 5, to lift a switch tripping pin 39 through a pivoted follower 37. The lever 22 may be modified to suit circumstances.
Patent GB-1079216-A (GB)
Title: Ylenals and process for their production
Inventor: FREYSCHLAG HERWIG
IPC: C07F9/535
Filed: 1964-11-27
Abstract: The invention comprises ylenals, (i.e. compounds which in the same molecule contain a phosphorylene group and an aldehyde group in conjunction) of the formula <FORM:1079216/C2/1> where Ar is an aryl radical which may be substituted by alkyl or alkoxy groups; R1, R2 and R3 are H or alkyl groups and n is an integer from 1 to 6.  They may be obtained by reacting a proton acceptor in liquid phase with a quaternary phosphonium salt of the formula <FORM:1079216/C2/2> where X(-) is a monovalent anion.  Suitable proton acceptors are bases having a pK value below or about 9 such as alcoholates, ammonia, amines, e.g. alkylamines or heterocyclic amines, or aqueous alkali. Suitable solvents are water, dimethyl-formamide or sulphoxide, acetonitrile, alcohol, hydrocarbons, halogenated hydrocarbons or mixtures thereof.  Specified products are triphenylphosphine-2-formylpropen-1-yl-1-methylene, triphenylphosphine-3-formylpropen-(2)-yl-2-methylene, triphenylphosphine-2 - methyl - 4 - formylbutadien - (1,3) - yl - 1 - methylene, triphenylphosphine-1-methyl-4-formylbutadiene - (1,3) - yl - 1 - methylene, and triphenylphosphine - 2,6 - dimethyl - 6 - formylhexatrien - (1,3,5) - yl - 1 - methylene. Examples are given for the preparation of triphenylphosphine - 2 - formylpropen - 1 - yl-methylene. The products are intermediates for the synthesis of dyes, pharmaceuticals, plant protection agents, food dyes and carolenoids.  The phosphonium salts of Formula I may be obtained by reacting a suitable halogen compound with a triarylphosphine in an organic solvent.
Patent GB-1091837-A (GB)
Title: Improvements in and relating to container caps
IPC: B65D39/00
Filed: 1966-10-27
Abstract: 1,091,837. Stoppers. A. R. RAUSING. Oct. 27, 1966 [Nov. 9, 1965], No. 48301/66. Heading B8T. A stopper having inner and outer concentric tubular portions 3b, 5 is pushed into the mouth of a plastics bottle (1), Fig. 2 (not shown), having a reinforced lip (40) which in one form compresses the outer tubular portion 5, closing a ring-shaped gap 43 between the two portions to prevent diffusion of gases through a thin tear-line 12 of the stopper. When inserted into the plastics bottle (1), a lip 23 around the tubular portion 5 seats under the bottle mouth lip (40), a sealing protrusion 30 engages against the bottle mouth inner surface, and a flange 10 seats against an upper inclined surface (6) of the bottle. If the pressure in the bottle is above atmospheric, the concave centre 3a of the inner portion 3b is biased outwardly to increase the pressure closing the gap 43. The stopper is opened by pulling a tab 43 to break the tear line 12 and remove the inner part 3b of the stopper, leaving the outer tubular portion 5 retained in the bottle mouth. The inner tubular portion 3b can be re-used by pushing it back into the outer portion 5, where it is retained by friction. In a modification, the inner tubular portion 3b has a relatively flat central area (3a<SP>1</SP>), Fig. 3 (not shown), and contains a plastics, metal &c. disc (51) biasing its cylindrical walls towards the outer tubular portion 5.
Patent GB-1156546-A (GB)
Title: Reinforced Type Cathode Ray Tube and the manufacturing method thereof
IPC: H01J29/87
Filed: 1966-10-31
Abstract: 1,156,546. Cathode-ray tubes. MATSUSHITA ELECTRONICS CORP. 31 Oct., 1966 [10 Nov., 1965], No. 48744/66. Heading HID. A reinforced type cathode-ray tube comprises a face panel 1, a reinforcing frame 6 and a filler composed of a layer 10 closer to, and at least one layer 9 remote from the front surface of the tube, the former being of a resin of much higher thixotrophy than the latter. Sealing resin 10 may be a thermosetting epoxy resin for example, with an additive such as fine powder silicic acid or calcium carbonate (particle diameter not larger than 4 microns) and of a curing time longer than that of layer 9. In assembly, resin 10 applied at the inwardly flexed front end portion of the reinforcing frame remains in position due to its high thixotropy allowing assembly in a jig arrangement; fitting of frame 6 and subsequent pressure on resin 10 causes it to fill gap 7<SP>1</SP> allowing resin 9, the matrix of which may be of the same type as that of resin 10, to fill the remaining gap. On removal of the tube from the jig, cured resin 9 ensures a rigid assembly while uncured resin 10 forced out on to the face panel may be easily removed.