baber/WOPTO huggingface dataset:
Patent GB-1533590-A (GB)
Title: Copolyimide foams and precursors therefor
IPC: C08J9/02
Filed: 1975-11-11
Abstract: 1533590 Copolyimide foams and precursors INTERNATIONAL HARVESTER CO 11 Nov 1975 [11 Nov 1974] 48099/77 Divided out of 1533589 Heading C3C A copolyimide foam precursor is obtained by combining one or more C 1-3  aliphatic di-esters of a tetracarboxylic acid with two or more diamines, one of which is heterocyclic and has nitrogen in the ring and all diamines are either the above heterocyclic amine or a p- or msubstituted aromatic diamine which is free of aliphatic groups and then mixing 0À1-10 parts by wt. of a surfactant/100 parts by wt. of the ester and diamine constituents. The precursors are made by dissolving a tetracarboxylic acid or anhydride in a C 1-3  alcohol to form the diesters and dissolving at least two of the above diamines in the product, in an amount such that the imide forming groups are equimolar, removing a portion of the excess of the alcohol and adding the surfactant in the above amount and removing further excess alcohol. Foams are made by heating the precursors. In the examples 3,3<SP>1</SP>,4,4<SP>1</SP>-benzophenonetetracarboxylic acid dianhydride or acid was reacted with ethanol to form the diethyl ester, mixed with 2,6-diamino pyridine and 4,4<SP>1</SP>- or 3,3<SP>1</SP>-diamino diphenylsulphone, m- or p-phenylene diamine or 4,4<SP>1</SP>- diamino diphenyl sulphide, excess ethanol removed, a silicone surfactant added and after further heating a residue was produced which was pulverized, heated to reduce its volatiles content and then further heated to cure and foam the resin.
Patent GB-1262599-A (GB)
Title: Tow-bar hitch
IPC: B60D1/40
Filed: 1970-10-12
Abstract: 1,262,599. Tow bar. GRASSLANDS PTY Ltd. 12 Oct., 1970 [12 Nov., 1969], No. 48336/70. Heading B7T.  A tow bar comprises a square section tubular bracket 3 adapted to be fixed to a towed vehicle and having flaired sides, a first circular section tubular member 6 pivoted within bracket 3 by pin 5 for side to side swinging movement, a second circular section tubular member 7 in telescopic relationship with member 6 and locked thereto by a pin 10, and a coupling half 8 fixed to the outer end of member 7 and adapted to co-act with a coupling half on a towing vehicle, and wherein a spring loaded bolt member 11 mounted on member 6 is adapted to co-operate with a latch member 13 mounted on bracket 3 for maintaining the member 6 and the bracket 3 in an aligned condition. A jack 15 may be fixed to the bracket 3.
Patent GB-1036340-A (GB)
Title: Multispeed transmission hub
IPC: B62M11/14
Filed: 1963-12-06
Abstract: 1,036,340. Variable-ratio gears. FICHTEL & SACHS A.G. Dec. 6, 1963 [Dec. 8, 1962], No. 48352/63. Heading F2D. A two-speed cycle or like hub has its ratio changed automatically in accordance with the output speed by centrifugal weights which are positioned at least partly outside the hub to permit large and heavy weights to be used in order to provide as large a force as possible. As shown, an input sprocket 3 is fast with a ring gear 2 meshing planets 6 mounted on a carrier 4 which is connected to the driven hub sleeve 15 by a free-wheel clutch 26. The planets are in constant mesh with a sun wheel 7 which can be shifted axially to selectively engage teeth 10 on a stationary member 9 and teeth 11 formed internally on the planet carrier. The sun 7 is shifted axially by centrifugal weights 20 positioned exteriorly of the hub sleeve 15 and fast with pins 16 radially slidable in the hub and which carry pins 17 co-operating with a conical ring 14 which is axially slidably mounted in the hub sleeve. The ring 14 is fast with a rod 13 operatively connected to the sun 7. The pin 17 has spring pressed ball 19 co-operating with annular grooves 25 formed in the conical ring 14 which define the end positions for the ring and the centrifugal weights and consequently the end positions of the sun gear 7, the depth of the grooves serving to prevent hunting. In the inmost position of the centrifugal weights 20 the ring 14 is in its right-hand position so that the sun gear 7 is stationed by engagement with the teeth 10 to give low ratio drive, in the outermost position of the weights the sun engages the teeth 11 to give direct drive.
Patent GB-1450701-A (GB)
Title: Radar antenna systems
IPC: G08B13/24
Filed: 1973-10-15
Abstract: 1450701 Aerials SIEMENS-ALBIS AG 15 Oct 1973 [17 Oct 1972] 48506/73 Heading H4A An omnidirectional antenna system for a radar device monitoring movement of an object in an area under surveillance comprises a dielectric rod projecting from a waveguide horn, the projecting end of the rod carrying a conical reflector whose tip is directed towards the horn, the edge of the horn having a flange at whose periphery there is a frusto-conical surface extending away from the reflector, the flange and surface forming part of the housing of the device. As described, a housing 4 is axially symmetrical about an axis A, and has at its centre a duplexing arrangement comprising a cavity 2 and a diode 10. A rectangular crosssection waveguide 11 leads from the cavity 2 to a horn 6, and contains a radiator 1 which comprises a dielectric material rod 3. Said rod is graduated in step-wise manner within the waveguide 11, to improve impedance matching, and extends out of the horn 6 in a portion which is of circular cross-section. At the free end of the rod there is a conical reflector 5. The housing 4 provides a transverse flange 7 around the edge of the horn 6, which is continued in a truncated conical surface 8, opposed to the conical reflector 5. The aerial radiates symmetrically about the axis A and, by suitable proportioning of cone angles and sizes of reflecting surfaces, with maximum effect transversely to said axis. The housing 4 may contain a transmitter and associated receiver together with means for producing Doppler-type output signals due to moving targets. The aerial system may be mounted on the roof of a car.
Patent GB-1332952-A (GB)
Title: Connecting sleeve for outlet pipe of water-closet
IPC: F16L47/26
Filed: 1971-10-19
Abstract: 1332952 Pipe couplings GUSTAVSBERGS FABRIKER AB 19 Oct 1971 [11 Dec 1970] 48527/71 Heading F2G A sleeve 2, for connecting the outlet pipe 1 of a water closet to a sewer pipe by means of an 0-ring seal 5, is spaced from the pipe 1 and sealed thereto by a sealing or filler 3, which retains its plastic consistency. The sealing 3 may be of adherent butyl tape. A rubber ring 4 supports the upper end of the sleeve 2.
Patent GB-1241423-A (GB)
Title: Apparatus for the treatment of vegetables
Inventor: TIEPEL ROBERT ERNST CARL HERBE
IPC: B07B13/00
Filed: 1968-10-15
Abstract: 1,241,423. Pneumatic separation. UNILEVER Ltd. 15 Oct., 1968 [16 Oct., 1967], No. 48728/68. Heading B2H. Apparatus for the treatment of vegetables comprises an inclined rotary drum 1 provided with a series of inwardly directed partitions 22 dividing the drum interior into a series of annular compartments which are provided with inwardly directed baffles 25 which carry the vegetables upwardly as the drum is rotated and allows them to fall into the next lower annular compartment, gas flow means being provided for blowing extranious matter from the vegetables as they proceed down the drum to a discharge chute 21 in a sleeve 15 which opens into the drum. The gas flow is provided by a fan 11 behind which is mounted an adjustable butterfly valve 12, a honeycomb 13 and a diffuser 14. The top end of the drum 1 is closed by a perforated plate 17 in a chamber 16 provided with an outlet 19.
Patent GB-1512900-A (GB)
Title: Transcriber system
IPC: G06F17/27
Filed: 1976-11-23
Abstract: 1512900 Transcribing and editing shorthand XEROX CORP 23 Nov 1976 [28 Nov 1975 (2)] 48783/76 Heading G4H A transcriber system for the rapid translation of shorthand notes, in the form of machinereadable outlines, into text words, comprises: a translator for receiving machine-readable outlines of shorthand notes from a shorthand machine, for locating text-word boundaries from the outlines, and for generating and storing text words corresponding to the outlines; a display for displaying the generated text words; and an editor for generating a cursor to identify and to be associated with one or more of the displayed words, and for enabling the cursoridentified word(s) to be edited. The components of the system are described in great detail.
Patent GB-1074717-A (GB)
Title: Detergent compositions
IPC: C11D1/28
Filed: 1965-11-17
Abstract: A built detergent composition comprising:  (a)  From 80-10% by weight of an organic detergent mixture consisting of from 20-100% by weight of an alkali metal salt of a methyl or ethyl ester of an alpha-sulphonated fatty acid having 10-20 carbon atoms in the acyl group, from 0-80% by weight of an alkali metal salt of an alkyl sulphuric acid having 14-20 carbon atoms in the alkyl group and from 0-80% by weight of a dialkali metal salt of an alpha-sulphonated fatty acid having from 14-20 carbon atoms in the acyl group; and  (b) from 20-90% by weight of a water-soluble alkaline builder salt.  An exhaustive list of builder salts is given and the usual additives such as optical brighteners and soil suspending agents may be added.
Patent GB-1455875-A (GB)
Title: Electric control circuits
IPC: H05B39/08
Filed: 1973-12-20
Abstract: 1455875 Lighting control systems GEORGE H SCHOLES & CO Ltd 14 Feb 1975 [20 Dec 1973] 48879/73 Heading H2H A lighting control unit 12 comprises a panel 13 upon which are mounted the elements for controlling the current in the circuit connected to terminals of the unit, the elements including a triac T1, a manually variable resistor VR 1 and a photosensitive resistor PR1 which responds to ambient light. Terminals 10, 11 are connected to an A.C. supply and an incandescent lamp such that the current in the lamp is controllable by the setting of the resistor VR1 which determines the charging rate of a capacitor C1 which in turn determines the point in the A.C. cycle at which a diac D1 breaks down and the triac T1 fired. The photosensitive resistor PR1 controls the charging rate of a capacitor C2 thereby also controlling the breakdown of the diac D1 and the firing of the triac T1 thus providing further control of the lamp current. A capacitor C3 and an inductor L1 form a filter to reduce interference being transmitted into the mains and, if desired, the resistors R1, VR1 may be shunted by a resistor R4 and a presettable variable resistor VR2 in series. The variable resistor VR1 mounted in the panel 13 is operable by means of a knob 14 and the knob is provided with a skirt having an opening 17 which cooperates with an opening 16 in the unit 12 behind which opening the photo-sensitive resistor PR1 is disposed. Thus when the openings 16, 17 are aligned the lamp is controlled by the photosensitive resistor PR1 in accordance with the ambient light and when the openings 16, 17 are misaligned the lamp is controlled by means of the variable resistor VR1, The photosensitive resistor PR1 is of the type which is insensitive to the spectral light distribution of an incandescent lamp. The lamp may alternatively be of the fluorescent type.
Patent GB-1022371-A (GB)
Title: Change speed gear
IPC: B60K17/08
Filed: 1962-12-28
Abstract: 1,022,371. Transmission gearing for tractors. KLOCKNER - HUMBOLDT - DEUTZ - A.G. Dec. 28, 1962 [Dec. 30, 1961], No. 48957/62. Heading B7H. [Also in Division F2] In a change-speed gear, for a tractor, comprising a driving wheel 9 freely mounted on a driving shaft 6, a plurality of gears 11, 12, 13, 14 carried by a coaxial driven shaft 7 and a countershaft having a set of mating gears 16, 17, 18, 19, 20, a double clutch 8 between the driving wheel 9 and the first driven shaft gear 11 provides two gear ranges forwards or in conjunction with a reversing gear 21, engageable with the gears 9 and 16, provides an equal number of forward and reverse ratios. The gears 11, 12 and 13, 14 may be selectively coupled to the driven shaft 7 by double dog clutches 32, 33 while the double clutch 8 is a friction clutch. The gears 21, 16 are arranged to move towards each other for reverse engagement by axial movement of shiftrods 22, 23 actuated by a lever 25 having a pin 27 engaging slots 29, 28 in the shift rods. A power take-off shaft 5 passing through the driven shaft may be engaged by a main clutch 2. In a second embodiment, the clutch 8 may be replaced by a double dog clutch actuated in conjunction with a friction main clutch 2 and the power-take-off shaft is coaxial with the countershaft, being driven by a separate gear pair from the friction clutch 2.
Patent GB-1403763-A (GB)
Title: Packaging article
IPC: B65D30/02
Filed: 1972-10-25
Abstract: 1403763 Bags R C BAKER 25 Oct 1972 [26 Oct 1971] 49269/72 Heading B8K [Also in Division B5] A packaging article is in the form of a disposable flexible envelope-like container having opposing walls, the internal surface of the walls being of fusible thermoplastic material and a part of the peripheral region of one wall of the envelope being folded inwards and united to the non-folded part of the same wall and also united to the opposite wall to form a releasable seal. In the preferred article, the sheet material forming each opposing wall 16 and 17 extends beyond releasable seal 24 to form a pair of flaps 25 and 26 for gripping, the material of flap 25 being folded back upon itself to extend as a partition 27 into the cavity of the envelope and form a rupturable seal. The envelope is sealed at its lateral ends by permanent seal structures (20, 21) whereby a pocket formed by rupture of the temporary seal can be turned inside out to enable direct application of the packaged product to a surface. The sheet material of the walls may comprise a polyester resin backing layer 23, a layer 22 of thermoplastic film or fibres and a layer of polyester fibres adhered to the layer 22 and becoming submerged therein on sealing. The sheet material may also include a barrier film, a priming layer, a vapour-deposited metal layer or a "recess-containing" layer of foam, fibrous web or flock material.
Patent GB-1028148-A (GB)
Title: The manufacture of an electric cable
Inventor: CORNISH ERIC HAYDN
IPC: B29C71/04
Filed: 1963-12-13
Abstract: 1,028.148. Irradiating cables. STANDARD TELEPHONES & CABLES Ltd. Dec. 11, 1964 [Dec. 13, 1963], No. 49430/63. Heading H5R. [Also in Division H1] A cable is provided with an oscillating rotary motion about its longitudinal axis as it passes through an irradiation zone so that any inhomogeneity in the irradiation of the cable is minimized. The oscillating motion is transmitted to the cable by spring-pressed rubber rollers R which are mounted on a carrier E which oscillates with the cable through 180 degrees. This angle can be reduced by providing a number of electron radiator sources positioned around the cable. The focused beam of the radiator sources is arranged to oscillate both transversely and longitudinally with respect to the cable axis over the irradiation zone as the cable is passed.
Patent GB-1104631-A (GB)
Title: Improvements in or relating to nuclear reactor fuel element assemblies
IPC: G21C3/348
Filed: 1963-12-16
Abstract: 1,104,631. Fuel assemblies. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 20 Nov., 1964 [16 Dec., 1963], No. 49662/63. Heading G6C. A nuclear fuel assembly in the form of a cluster of elongate parallel rods is provided with spacing means intermediate its ends, comprising resilient spacer members placed between adjacent rods and carried by a supporting grid which cages the spacers but which allows them to move freely within limits in a direction parallel to the rods. Thus all spacing and location is effected without the use of the grid which merely limits the spacer freedom. All parts are preferably of stainless steel, and may be welded or brazed. The caging grid is made in two halves 9, 10 joined together by spot-welded bridge pieces 14. The apertures 19 formed by joining the two grid halves provide limited vertical and horizontal freedom. Fig. 6 illustrates the principle of operation on a section through the assembly, the centre rods being at a higher temperature than the outer rods; absolute thermal expansion is accommodated by axial displacement of the spacers 6, and relative thermal expansion by tilting of the spacers. The spacers 6 may also be of square, triangular, rectangular, polygonal, elliptical or trefoil cross-section.
Patent GB-1408733-A (GB)
Title: Wire twisting machine
IPC: D07B3/02
Filed: 1973-10-25
Abstract: 1408733 Twisting wires together JAMES SMITH & SON Inc 25 Oct 1973 49735/73 Heading B3E A wire twisting machine includes paths for individual wires to a twisting die, two axially spaced flier arms located at opposite ends of a creel supporting spools of individual wires, and a path for the twisted wires from the die and over the arms.  In Fig. 1, shafts 14, 16 rotate flier arms in the form of discs 18, 20 at the same speed. Depending pivoted arms 22, 24 are connected by a longitudinal 26 having a vertical slot into which fits a flat spool support 30, being fastened at 70. Each spool is provided with snubbing apparatus 36. At each end of support 30 is a disc 38, 40, the latter having sheaves 42 at its periphery and sheaves 48 inwardly thereof, the sheaves guiding individual wires from the spools to a twisting die 50. The twisted wires are led over sheave 60, sheaves 62, 64 on the flier arms, and sheave 66 to a take-up reel 68.
Patent GB-1476390-A (GB)
Title: Worm drive units
IPC: F16D3/12
Filed: 1974-11-18
Abstract: A controlled member is movable between two end positions defined by respective first and second stops, particularly a flap-type valve member located in the exhaust gas conduit of an internal combustion engine movable between first and second end positions in which the valve member comes into abutment with respective first and second seating surfaces of the conduit. An arrangement for positioning the controlled member includes a drive motor having a motor shaft, a worm screw connected to and driven by the motor shaft, a worm gear meshing with and driven by the worm screw, a positioning-arrangement output shaft coupled to and driving the controlled member, a claw coupling having a first part coupled to and driving the output shaft and a second part coupled to and driven by the worm gear, a unit automatically operative for turning off the drive motor when the controlled member is moved into one of the end positions thereof, and a damping spring arrangement intermediate the two parts of the claw coupling and operative upon drive motor turn-off for absorbing the kinetic energy present in the moving parts of the positioning arrangement to effect braking of such moving parts and so dimensioned as not to be deformed during such absorbing beyond a predetermined maximum permissible extent.
Patent GB-1484129-A (GB)
Title: Settable joints for human or animal figures or other mechanical functions
IPC: A63H17/273
Filed: 1973-10-25
Abstract: 1484129 Adjustable joints LESNEY PRODUCTS & CO Ltd 18 Oct 1974 [25 Oct 1973] 49856/73 Heading E2F In an adjustable joint, two co-operating elongated plastics portions 1, 2 comprise parts establishing a pivotal connection therebetween and that any chosen one of a plurality of different angular settings may be provided relative to one another about the axis of the pivotal connection. A boss 3 is formed on one portion 1, the boss 3 being provided with resilient teeth which co-operate with a toothed hole 8 in the other portion 2. When the boss 3 and an elongated stop 4 thereon are passed through the hole 8 and the opening 9 in the portion 2, the co-operating resilient teeth of the boss 3 and the hole 8 permit the teeth to ride over one another such that the two portions 1, 2 will remain in any angular position desired. The joint may be used in doll's limbs or in garden or beach furniture.
Patent GB-1047078-A (GB)
Title: Apparatus for producing ultrasonic oscillations
IPC: B06B1/02
Filed: 1964-12-08
Abstract: 1, 047, 078. Automatic control of ultrasonic generators. GREINER ELECTRONIC A.G. Dec. 8, 1964 [March 28, 1964, No. 49923/64. Heading G3R. A plurality of magnetostrictive ultrasonic generators are supplied from a frequency-modulated oscillator through a common amplifier the gain of which is automatically varied in dependence on the output of piezo-electric detectors associated with the ultrasonic generators to prevent excessive amplitude of any one of them. A high frequency oscillator 11 is modulated at low frequency by a motor-driven condenser 14 and the resulting signal amplified by tuned amplifiers 21, 33 before application through a transformer 36 to parallel-connected windings 55, 65 of magneto-strictive ultrasonic generators 50, 60 comprising ferrite limbs separated by permanent magnets. Piezo-electric detectors 56, 66 produce outputs dependent on the amplitudes of vibration which are applied through rectifiers 59, 69 and a common amplifier 72 so that a resistance-capacity network 75, 76 is periodically charged to a voltage dependent on the maximum amplitude of the several generators. The timeconstant of the resistance-capacity network is comparable with the frequency of oscillator 11 and is connected to control, through an amplifier 24, the bias of an amplifier 21 so that the maximum amplitude of the several generators is maintained constant. Application to ultrasonic generators having limbs of different resonant frequencies, each provided with two amplitude detectors, is referred to. Use of a reference voltage source associated with amplifier 72 is also referred to.
Patent GB-1508672-A (GB)
Title: Damp proof sheets
IPC: C09K3/10
Filed: 1975-12-05
Abstract: 1508672 Damp-proof sheets COAL INDUSTRY (PATENTS) Ltd 2 Nov 1976 [5 Dec 1975] 49991/75 Headings C3N and C3V Water-proof sheets are made of compositions comprising (1) at least 5% polychloroprene rubber, (2) up to 45% pitch and (3) at least 5% filler. The compositions may comprise fibrous and/or particulate fillers, carbon black, supplementary polymers and processing aids. Examples describe compositions comprising polychloroprene, coal tar pitch and carbon black together with (1) nitrile rubber, polyvinyl chloride, cotton/terylene fibres, whiting and polyethylene wax, (2) chlorinated polyethylene, cotton/nylon fibres, china clay and epoxidized soya bean oil, (3) nitrile rubber, chlorosulphonated polyethylene, polyvinyl chloride, terylene fibre, whiting and chlorinated paraffin, and (4) chlorinated polyethylene, nitrile rubber, chopped PVC conveyer belting, china clay or whiting, epoxidized soya bean oil and stearic acid.