baber/WOPTO huggingface dataset:
Patent GB-1454403-A (GB)
Title: Polyurethane sponges
IPC: C11D17/04
Filed: 1973-11-08
Abstract: 1454403 Sponges R L STRICKMAN and M B STRICKMAN 8 Nov 1973 [13 Nov 1972] 51897/73 Heading A4V [Also in Divisions C3 and C5] Dry resilient polyurethane sponge having closed cells within which is a soap and/or a detergent in an amount of at least 4 wt per cent of the sponge may be prepared by mixing the soap and/or detergent in a polyurethane foam-forming reaction mixture which is then allowed to foam. Abrasive scouring particles and/or a silicone oil may also be included in the reaction mixture, the silicon oil preferably being incorporated in a carrier which is suitably the soap and/or a solid detergent. In typical examples a dimethyl silicone is incorporated into coco-tallow soap as carrier and this combination is added to a polyurethane foam-forming reaction mixture along with an alkylaryl sulphonate detergent. When an abrasive is used it is suitably silica, aluminium oxide or metal particles. The soaps and/or detergents may also be incorporated in the force of microcapsules.
Patent GB-1080868-A (GB)
Title: Microwave oscillator having improved ring connection structure
Inventor: WARREN STANLEY FRANCIS
IPC: H03B5/18
Filed: 1964-12-23
Abstract: 1,080,868. Valve oscillating circuits. TRAK MICROWAVE CORPORATION. Dec. 23, 1964, No. 52334/64. Heading H3F. [Also in Divisions H1 and H2] A microwave oscillator comprises a conductive tubular casing 2 in which valve 4 is supported by means of a split washer 16A, 16B which engages a recessed conductive ring 12 integral with and connected to the cathode of the valve. Split washer 16A, 16B is held in a slightly tapered recess in casing 2, which terminates in a shoulder 20 towards which it is urged by means of insulating washers 22, 38 and snap ring 40. Connection is made to the valve heater pins 6, 8 by means of push-on connectors 30 which are retained by the washer 38. A half-wave grid line formed by a tubular conductive member 46 is split at one end to form spring fingers, projecting grid ring 14 on the valve being held in an internal groove in member 46, the other end of which is supported within the casing 2 by means of three bobbin-shaped insulators 52 (Fig. 3, not shown). Spaced at equal intervals around the member 46 are three tongue-shaped bimetallic strips 20 providing temperature compensation. The anode circuit comprises a threequarter-wavelength line formed by rod-shaped member 66, one end of which is enlarged to form a cup 68 which is slit so as to clip on to the anode 10 of the valve. The other end carries H.T. terminal 78 and is threaded to engage a supporting insulator 98 which is held in a recess in casing 2 by means of snap-ring 100. Tuning is effected by means of a cylindrical choke 82 which includes at one end a small-diameter extension 86 which is slit so as to slidably engage a slightly enlarged portion 72A of rod 66; the other end is supported by means of a tubular insulating sleeve 94. Choke 82 is covered by insulating sleeve 84 and can be adjusted by means of screw 114 which engages a threaded bush 108 in the choke. Energy is removed from the oscillator by means of a coupling loop 128 attached to concentric connector 124.
Patent GB-1456879-A (GB)
Title: Balancing machine for testing static and dynamic balance
IPC: G01M1/04
Filed: 1974-12-05
Abstract: 1456879 Testing static and dynamic unbalance CARL SCHENCK AG 5 Dec 1974 [11 Nov 1974] 52679/74 Heading G1X The static and dynamic balance of a body, e.g. vehicle wheel, is tested by a machine comprising a U-shaped frame 7 having a horizontal web 6 forming a torsion spring which carries a bearing for a spindle 2 supporting the test body, and limbs 8. The bearing is connected by two flexing springs 12 to the limbs 8. As described, two transducers 13, 15 are fixed to the bed-plate 9. The dimensioning of the frame 7 and springs 12 is so selected as to substantially equalize the resonance at bending and torque stresses. Springs 12 may be leaf-springs (as shown) with their broader sides disposed vertically and extending parallel to web 6, or comprise two pairs of parallel leaf-springs. Web 6 and limbs 8 may be in the form of leaf-springs. A plurality of U-shaped frames 7 may be combined to form a stack and the various members shown as flat leafsprings may be replaced by round bar or hollow springs. The machine, except for spindle 2 may be enclosed, and a protective hood may be pivotally connected to supports to enclose the test body when desired.
Patent GB-1357887-A (GB)
Title: Fuel injection system for an internal combustion engine
IPC: F02M25/022
Filed: 1970-11-05
Abstract: 1357887 I C engine fuel injection systems; reciprocating pumps CAV Ltd 25 Oct 1971 [5 Nov 1970] 52703/70 Headings F1A and F1B A spring - biased piston 14a is subjected at one end to the high-pressure of fuel supplied by a pump 10 to a fuel injector 12 and displaces water or other fluid, admitted through a valve 16 to the cylinder 13 at the other end of the piston, to the fuel injector, to a separate injector (30), Fig. 3 (not shown), or through a passage 18, Fig. 1 (not shown), in the piston to the fuel line 11 connecting the pump and fuel injector.
Patent GB-1490706-A (GB)
Title: Liquid crystal display systems
IPC: G02F1/137
Filed: 1974-12-06
Abstract: 1490706 Matrix displays SIEMENS AG 6 Dec 1974 [10 Dec 1973] 52769/74 Heading G5C [Also in Division G2] In a matrix-addressed electro-optic display device in which a layer of cholesteric liquid crystal material with positive dielectric anisotropy is disposed between electrode-bearing substrates having mutually crossed polarizers on their outer surfaces and is homotropically aligned adjacent each substrate, regions in the light scattering andde polarizing focal ionic state may be converted to the transparent homotropic nematic state by application of a voltage pulse U 3  of sufficient amplitude and duration, the reverse charge may be effected at selected points by reducing the voltage sufficiently (U 1 ) and for a sufficient time, and either state may be maintained on application of an intermediate holding voltage U 2 . The voltage U 2  is preferably 0À8 to 0À9 times the threshold value dÀE<SP>b</SP> c  for the cholesteric to nematic transmission. As particularly described in relation to a device with X and Y addressing electrode strips U 1  = 0, and the whole layer is initially rendered transparent and nematic. Subsequently, addressed rowand column conductors have an applied potential of + U 2 , and unaddressed rows and columns have potentials of 0 and -U 2  respectively. The liquid crystal material may be a mixture of nematic material with positive dielectric anisotropy and cholesteric material, and layers of lecithin are provided to induce homotropic alignment.
Patent GB-1360817-A (GB)
Title: Continuous manufacture of propylene oxide from propylene chlorohydrin
IPC: C07D301/26
Filed: 1971-11-15
Abstract: 1360817 Propylene oxide BADISCHE ANILIN- & SODA-FABRIK AG 15 Nov 1971 [16 Nov 1970] 52849/71 Heading C2C A process for the continuous production of propylene oxide comprises the steps of: (a) mixing propylene chlorohydrin with an aqueous alkali at 70-150 C. in a mixing time of 0À1-4 secs.; (b) mixing the produced liquid mixture with steam in a weight ratio of steam : chlorohydrin of at least 0À5 : 1 such that at least one of the two phases is finely distributed in the other; (c) passing the resulting steam/liquid mist or foam through a reaction zone at 70- 150 C. in a residence time of 0À1 to 1 sec.; (d) separating the liquid phase from the propylene oxide laden steam phase; (e) partially condensing the steam phase from step (d) and separating the condensate from uncondensed material; (f) stripping the liquid phase from (d) and the condensate from (e) with steam on at least one column plate or equivalent thereof, the stripping steam being subjected to partial condensation according to step (e), and (g) recovering propylene oxide from the uncondensed material downstream of (e). The preferred aqueous alkali is caustic soda optionally also containing sodium chlodide (i.e. a cell liquor) and the mixing is preferably achieved in step (a) by turbulent jet mixing.
Patent GB-1279716-A (GB)
Title: Photoconductive compositions and materials
Inventor: MERRILL STEWART HENRY
IPC: G03G5/05
Filed: 1969-10-30
Abstract: 1279716 Polyesters EASTMAN KODAK CO 30 Oct 1969 [31 Oct 1968 (2); 26 Nov 1968] 53256/69 Heading C3R [Also in Divisions C2 and H1] Linear polyesters comprising alkylidenebisaryloxyalkyl repeating units and repeating units of specified formulµ which contain arylene moieties, are made by melt condensation of a bishydroxyalkyl aryl ether with an alkylene glycol and a dialkylene arylate. In a specific embodiment poly-(4,4<SP>1</SP>-isopropylidene-bisphenoxyethyl-co-ethylene isophthalate) is prepared by the reaction of 4,4<SP>1</SP>-isopropylidenebisphenoxyethanol with dimethyl isophthalate and ethylene glycol in the presence of tetrabutyl orthotitanate. In other embodiments ethylene glycol may be replaced by tetramethylene glycol or trimethylene glycol whilst dimethyl isophthalate may be replaced by dimethyl terephthalate. Many linear polyesters are listed.
Patent GB-1223306-A (GB)
Title: A bimetallic thermostat
Inventor: BROETTO DANILO
IPC: H01H37/00
Filed: 1968-11-12
Abstract: 1,223,306. Thermal switches. ELETTROTECNICA VEBE S.p.A. 12 Nov., 1968, No. 53561/68. Heading HlN. The spring contact strips 3A, Figs. 1, 2 of three independently operated bi-metallic switches are arranged in an equilateral triangle within a cylindrical housing A and are actuated by snap-acting bi-metal discs 1A engaging slidable pins 2A. The spring contacts 3A are fixed to terminal member 4A or 11 projecting from the casing and interconnected by a starshaped spider S. The three fixed contacts 51A are mounted on terminals 6A projecting from the housing. Seatings Se and Se<SP>1</SP> of the terminal 4A, 6A are separated by a rib N of the casing.
Patent GB-1142697-A (GB)
Title: Photographic silver halide material
Inventor: OEHLSCHLAEGER HANS
IPC: C09B23/04
Filed: 1966-11-30
Abstract: 1,142,697. Bis - methylthiobenzaldehyde. AGFA-GEVAERT A.G. 30 Nov., 1966 [10 Dec., 1965], No. 53624/66. Heading C2C. [Also in Divisions C4 and G2] 2: 4-Bis-methylthiobenzaldehyde is made by adding benzene-1: 3-bis-methyl ether to a mixture of phosphorus oxychloride and N-methyl formanilide and heating.
Patent GB-1184960-A (GB)
Title: Apparatus for Providing a Stepped Series of Precise Direct Current or Voltage Levels
IPC: G01R1/28
Filed: 1967-11-24
Abstract: 1,184,960. Regulating electric currents. CANADIAN PATENTS & DEVELOPMENT Ltd. 24 Nov., 1967 [6 Jan., 1967], No.53645/67. Heading G4H. Apparatus for providing a stepped series of precise direct current values comprises a direct current comparator 1, Fig. 1, having primary and secondary windings 3, 4 wound on a magnetic core 2 and means 7 for detecting zero flux in the core, current tapping positions at predetermined points on at least one of the windings to change the effective turns ratio between the windings, a source 6 of constant direct current connected to the primary windings, and means 8 controlled by the zero flux detector for causing a current to flow in the secondary winding such that the ampere-turns balance .in the comparator. The secondary winding current is then directly related to the current on the primary winding in proportion to the effective turns. The current in the secondary may be passed through a constant resistance to obtain a series of precise voltages. Instead of using separate primary and secondary windings, a single winding may be used, as in an auto-transformer. The zero flux detector comprises a pair of detector windings each wound on a separate core, the two cores together forming the comparator core. The two detector windings are supplied with square-wave A.C. current in opposite phase and connected so that if the flux is zero the two windings develop equal and opposite signals which cancel. If there is a flux in the cores, an output is produced, which after demodulation is applied to control the amplifier supplying current to the secondary winding. Fig. 5 shows the construction of the comparator, the primary and secondary windings 3 and 4 surrounding a magnetic shield 15. The detector windings 13, 14 each on a separate core 11, 12 are positioned in the centre and protected by an electrostatic shield 19. The secondary winding may also have tapping points for changing the turns-ratio and for correcting errors.
Patent GB-1253523-A (GB)
Title: Sealing of flexible package casings
Inventor: SCHROEDER PAUL GEORGE KARL
IPC: A22C11/12
Filed: 1968-11-12
Abstract: 1,253,523. Sealing flexible food casings. P. G. K. SCHROEDER. 12 Nov., 1968, No. 53714/68. Heading B8C. [Also in Divisions B2, D1, E1 and H1] A flexible sausage, poultry or meat casing, which may enclose a vacuum, is sealed by staples the legs whereof are bent towards each other over the casing end and which are made from an extruded wire 8, e.g. of aluminium or copper, having an undulated periphery coated with plastics 10, e.g. polyvinyl chloride, polyvinyl acetate, polyethylene, polypropylene or butadiene copolymer, the undulations comprising at least ten around the periphery and the convoluted length being 135% to 170% that of the periphery of the base circle 11 or section. The convolutions serve to minimize cold flow of the coating 10 to avoid leakage of the easing. The convolutions may be of different height.
Patent GB-1368343-A (GB)
Title: Controlled polymerization of hexachlorophosphazene
IPC: C01B21/098
Filed: 1972-11-23
Abstract: 1368343 Polymerization of hexachlorocyclotriphosphazene HORIZONS RESEARCH Inc 23 Nov 1972 [23 Nov 1971] 54154/72 Heading C1A (NPCl2)n is prepared by polymerizing a mixture of (NPCl2)3 and (NPCl2)4, wherein the amount of (NPCl2)4 present is in the range 20- 75% by wt. based on the combined wt. of trimer and tetramer, thereby avoiding the formation of a gel. The process may be carried out by heating the mixture at a temp. of 250-300‹ C. at a pressure of approx. 1 mm. Hg.
Patent GB-1077168-A (GB)
Title: Apparatus for the semi-automatic testing of camshafts
Inventor: LESER HEINZ
IPC: G01B5/20
Filed: 1965-12-22
Abstract: 1,077,168. Testing cam-shafts. FEINMESSZEUGFABRIK SUHL, VEB. Dec. 22, 1965, No. 54358/65. Heading G1M. In an apparatus for testing cam-shafts in which the cam-shaft to be tested is compared with a master cam, the apparatus comprises a rotatable main shaft 3 having centring devices at its ends, and bearing blocks carrying further centring devices, the main shaft 3 and the bearing blocks being so arranged that a cam-shaft being tested and a master cam are both arranged in alignment with the main shaft between the centring devices and thus have a common axis of rotation. The main shaft 3 is supported in a main bearing 2 and mounts rotatable centring devices 5, 6. A master cam 9 is positioned between centring device 5 and a further centring device 7. The master cam 9 and the cam-shaft 10 are connected through drivers 11 and 12 to the main shaft 3. Parallel to the shaft 3 is a further shaft 13, incorporating a copying head 14, measuring head 15 and bearing blocks 34, 35. Feelers are provided at both the copying head 14 and measuring head 15 to trace the shape of the cams, deviations between the shape of the cams being recorded electrically on a dial 23. Screw means are provided for aligning the cams on the cam-shaft 10 before testing.
Patent GB-1195538-A (GB)
Title: Rear Suspension Systems for Road Vehicles
Inventor: JENKINSON JEREMY MARK
IPC: B60G17/00
Filed: 1966-12-09
Abstract: 1,195,538. Vehicle suspensions. JOSEPH LUCAS (INDUSTRIES) Ltd. 22 Nov., 1967 [9 Dec., 1966], No. 55176/66. Heading B7D. [Also in Division F2] A motor vehicle front or rear suspension comprises a linkage between which and the vehicle frame is included a screw jack for adjusting the vehicle height, the screw jack being operated from a reversible electric motor through an epicyclic gearing which incorporates internal annular gears each comprising an internal toothed annulus 13c, a fixed outer steel annulus 13a and a middle annular member 13b formed of rubber.
Patent GB-1458481-A (GB)
Title: Damping the movement of a hammer piston
IPC: B25D9/10
Filed: 1974-12-20
Abstract: 1458481 Percussive drill ATLAS COPCO AB 20 Dec 1974 [31 Dec 1973] 55221/74 Heading B4C A hammer drill comprises a housing 17, a driving piston 2, a hammer piston 3 driven by a cushion of air between the two pistons there being an annular damping space 10 around the hammer piston and a duct 11 branched at 12 to provide damping of the hammer piston when it exceeds its working stroke, the duct 12 providing even weaker damping so that the hammer piston can be held in its forward position during no-load operation. Flushing air passes through a duct 14 and in the no-load position constant flushing can be provided. In operation air is drawn between the pistons through inlet 21 during the forward stroke of piston 2 and compressed forcing piston 3 forwards until piston 3 uncovers flushing air outlet 16 and hammer piston 3 strikes the drill steel. As piston 3 returns air passes out from above it through the upper part of duct 11 and around the piston at 10. Final damping is via annular gap 10 only. At its most forward position piston 3 uncovers both ducts 11, 12 and minimum damping is provided.
Patent GB-1486950-A (GB)
Title: Current collector for a rail-bound vehicle
IPC: B60L5/22
Filed: 1974-12-23
Abstract: 1486950 Current collectors ASEA AB 23 Dec 1974 [28 Dec 1973] 55395/74 Heading B7L A current collector for a rail vehicle comprises a vertically movable carrying assembly 15 which is connected to a pair of parallel plate springs 20 by a structure 21 including brackets 24 and 25 interconnected by an elastic element 26, the ends of each spring 20 at 30 being received on mountings which are connected in pairs by links 35, contact bows 17 for collecting current from a conductor 18 when assembly 15 is upwardly extended being supported by holders 37 carried by the links 35. The spring ends at 30 may each terminate in a ring surrounding a cylindrical member (33), Fig. 4 (not shown), which is connected to the link 35, the ring- shaped spring end 30 and the cylindrical member (33) being mounted for movement relative to one another by means of a cylindrical rubber element (34) disposed therebetween. Disposed between the springs 20 are a spacing element 27 and rubber elements 44 for damping movement of the contact bows 17, from which current is transmitted to the vehicle via conductors 39.
Patent GB-1269843-A (GB)
Title: Improvements in joints between building units
Inventor: KETHERINGHAM EDWARD JOHN
IPC: E04B1/68
Filed: 1969-11-12
Abstract: 1,269,843. Building joints. MARLEY BUILDINGS Ltd. 3 Nov., 1970 [12 Nov., 1969], No. 55424/69. Heading E1B. A drainage channel 6 formed between concrete slabs 1 and 2 held together by bolts passing through holes 5, houses a sealing strip 9 of plasticized P.V.C. having a pair of fins which are more resilient than the body portion, and the shape and size of the strip is such that the fins abut the elements throughout their length. Mastic sealing compound may be included between surfaces 12 and 13 and 15 and 16. Alternatively the strip may have a central protrusion which is squeezed between surfaces 15 and 16.
Patent GB-1364449-A (GB)
Title: Apparatus for checking the contents of a digitaldata store
IPC: G06F11/08
Filed: 1970-11-25
Abstract: 1364449 Data stores JOSEPH LUCAS (INDUSTRIES) Ltd 5 Nov 1971 [25 Nov 1970] 56017/70 Heading G4A Apparatus for checking the contents of a data store 20 comprises a bi-stable device 10 having two inputs 11, and 12, and two corresponding outputs 13, and 14, a counter 17 and an associated switching means 15, 16 adapted in response to a first output from the bi-stable to supply clock pulses to the counter, a logic circuit 18 operable in response to the first bistable output to place the store under the control of the counter whereby successive store locations are read out to an accumulating adder 22, 23, and means 28 responsive to a predetermined count in the counter to produce the second input to the bi-stable whereby the latter produces its second output. As described clock pulses from the computer are supplied to AND gates 15 and 16 one of which is enabled by a respective output 13, 14 of the bi-stable. In normal operation the clock pulses are fed via gate 16 to the computer whose store 20 is accessed under control of address register 30 via logic unit 18 due to the presence of the output 14 from the bi-stable 10. When the input 11 to the bi-stable goes high output 13 also goes high and AND gates 32 and 16 are blocked releasing the store from the computer. Simultaneously AND gate 15 is enabled and the clock pulses are fed to counter 17. The contents of the counter 17 via AND gate 31 in logic circuit 18 access the store, the contents of the addressed locations being accumulated in register 23 by means of adder 22. When the count reaches a predetermined value, determined by comparator 28 a signal is supplied to input 12 of the bi-stable returning the store to computer control, the counter being reset by the absence of the bi-stable output 13. The computer accesses the accumulated result in register 23 by means of a program generated signal, which, via AND gate 32 in logic unit 18 enables AND gate 26. The result is then transferred to the computer via its normal store access line 25 for comparison with a fixed value.
Patent GB-1323446-A (GB)
Title: Data communication system
IPC: H04L27/02
Filed: 1970-11-26
Abstract: 1323446 Automatic phase control INTERNATIONAL BUSINESS MACHINES CORP 26 Nov 1970 [15 Dec 1969] 56356/70 Heading H3A A data communication system including signal sampling means is characterized in that the sampling time is controlled by a circuit which includes means for differentiating an input to the sampling means and means for combining the differentiated signal with the output from the sampling means to produce the sample time control signal. Amplitude modulated data signals from input 21 are fed to demodulators 25, 49 together with in-phase and quadrature carrier signals from local carrier source 47. The two demodulated signals are sampled and the resulting sampled signals are fed to a comparator 53 to produce an error signal for controlling the phase of the carrier source 47. The signal from demodulator 25 is also fed to a second comparator 55, the other input of which is derived from the differentiated and sampled output from the demodulator 25. The resulting output from the comparator 55 provides a control signal for correcting the sampling time. This signal is fed to a further comparator (85, Fig. 3, not shown) where it is compared with a ramp signal to produce a sampling pulse whenever the amplitudes of the ramp and error signal are equal.
Patent GB-1220069-A (GB)
Title: Improvements in or relating to a hydrophilic gel
Inventor: AKRONGLOD HAROLD SAMUEL
IPC: C11D3/37
Filed: 1967-12-12
Abstract: 1,220,069. Polyamide gels. H. S. AKRONGOLD, and R. AKRONGOLD. 12 Dec., 1967 [13 Dec., 1966], No. 56364/67. Heading C3R. [Also in Division C5] A hydrophilic gel consists essentially of 5 to 95 wt. per cent of a solid polyamide of a polymeric fatty acid and a polyamine and 1 to 95 wt. per cent of a diethanolamide of a C 6-12  fatty acid and may additionally include 5 to 75 wt. per cent of a surfactant, a minor proportion of a metal soap, 1 to 10 wt. per cent of iodine or bromine, 0-1 to 20 wt. per cent of a dimerized fatty acid, and a perfume, dye or antiperspirant. The polyamide may be pretreated with polyvinyl pyrrolidone, methyl cellulose, an acrylamideacrylic acid copolymer, triethanolamine, sulphuric acid or hydrogen peroxide. The gel may be in the form of a transparent washing bar (soap) or soft gel and may have a polyurethane sponge, steel wool, or a non-woven fabric embedded in it. The invention claimed in Specification 1,117,129 is disclaimed.