baber/WOPTO huggingface dataset:
Patent GB-886505-A (GB)
Title: Tetra-substituted bridged diphosphines
IPC: C07F9/54
Filed: 1959-11-11
Abstract: The invention comprises an organophosphorus bridged diphosphine having the general formula <FORM:0886505/IV (b)/1> wherein n is 1, 2 or 3, Y is R1, R2-O-R3 or R2-S-R3 in which R1, R2 and R3 are substituted or unsubstituted branched or straight chain saturated or unsaturated alkylene groups having 2 to 20 carbon atoms, said substituted alkylene groups having their substituents on a carbon atom at least 3 carbon atoms removed from each phosphorus atom, all A groups when present are identical groups and are betasubstituted ethyl functional groups selected from NC-CH2-CH2, (R4)(R5)N.CO.CH2.CH2, and R6O.CO.CH2.CH2 in which R4 and R5 are H or C1-C6 alkyl and R6 is a C1-C6 alkyl group, said functional group being attached directly to phosphorus through its a -carbon atom, all B groups when present are identical groups and are substituted or unsubstituted saturated or unsaturated branched or straight chain aliphatic hydrocarbon groups having 1 to 20 carbon atoms, said substituted aliphatic hydrocarbon groups having their substituents on a carbon atom at least 3 carbon atoms removed from each phosphorus atom, with the proviso that when A is absent and Y is R1 the two phosphorus atoms are separated by a chain of at least 3 carbon atoms. They may be obtained by (a) reacting at least two moles of an organophosphorus compound of the formula (A)nP(B)3-n wherein n is from 1 to 3 with one mole of a compound X1-Y-X2 wherein X1 and X2 are halogen atoms to produce the corresponding diquaternary phosphonium halide having the formula <FORM:0886505/IV (b)/2> and (b) then reacting said diquaternary phosphonium halide with a strong base which may suitably be an alkali metal alkoxide, e.g. sodium, ethoxide, sodium cyanide or sodium amide.  The reaction (a) may be carried out at from 0 DEG C. to 150 DEG C., preferably 15 DEG C. to 115 DEG C. and may be effected in an inert solvent, e.g. glacial acetic acid, an alcohol, acetonitrile or acetone.  Reaction (b) is generally effected at from 5 DEG C. to 115 DEG C., preferably 20 DEG C. to 80 DEG C., and may be carried out in an inert organic solvent, e.g. an alcohol or liquid ammonia.  Either reaction (a) or (b) may be carried out at atmospheric subatmospheric or super-atmospheric pressure.  Specified substituents for the groups Y and B are phenyl, dialkylamino, nitro, nitrile, carbalkoxy, dialkylcarbamoyl, carbamoyl, alkyl or aryl ether or thioether, acetal, keto, fluoro, chloro and hydroxyl.  Examples are given for the production of tetra(2-cyanoethyl) ethylene diphosphine, tetra(2-cyanoethyl) trimethylene diphosphine, tetramethyltrimethylene diphosphine, tetra(2-carboethoxyethyl) ethylene diphosphine, tetra(2-cyanoethyl) 3-oxapentylene diphosphine, tetra(2-cyanoethyl) 2-butenylene diphosphine and tetranonyl 1,10-decylenediphosphine.  The products are useful as flotation agents and as chelating agents and the nickel carbonyl derivative of tetra(2-cyanoethyl) ethylene diphosphine may be used as a catalyst in the polymerisation of acetylene.
Patent GB-904565-A (GB)
Title: Fluid control valves
IPC: F16K7/20
Filed: 1958-11-27
Abstract: 904,565. Valves. NORDSTRANDSVENTILEN A.B. Nov. 27, 1958 [May 3, 1958], No. 38282/58. Class 135. In a valve of the kind wherein a resilient cup- or sleeve-shaped closure member 5, 6 co-operating with a seat 4 to control flow between an inlet 2 and outlet 3 is operated by a rotary actuating crank 12, 14 extending into the closure member, the wall thickness of that part of the closure member which is to engage with the seat is greater than that of the further part 6 of the closure member and this further part, which forms a collar 10 attached to the valve housing 1, is sufficiently flexible to bend during operation of the valve but without allowing rotation of the rest of the closure member 5 in relation to the housing. A rigid liner 16 in which the crank engages is of oval section. In a modification, the crank has two bearings at opposite ends of the closure member and the collar part is duplicated at the other end.
Patent GB-1089470-A (GB)
Title: System for controlling hydraulic servo motors
Inventor: PFAFF KLAUS
IPC: B64C13/24
Filed: 1965-09-08
Abstract: 1,089,470. Fluid-pressure servomotor systems. DORNIER-WERKE G.m.b.H. Sept. 8, 1965 [Sept.18, 1964], No.38353/65. Heading G3P. A control surface of an aircraft is actuated by two servomotors 2, 3 Fig. 1 (not shown) connected in tandem and controlled by relay valves 7, 8 (Fig. 2) respectively, the spindles 13, 14 of the relay valves being interconnected by pivoted links 15, 16. Slidable on each of the spindles is a floating piston valve 36, the limits of sliding of the latter relative to the spindle being defined by stops 45, 46 on the spindle. Each relay valve is controlled by a polarized relay 30 receiving signals from an autopilot, the relay carrying a flapper 31 which co-operates with orifices 32, supplied from line 20 via restrictions 33, to vary the pressures in chambers 43, 44 of the relay valve, movement of the relay valve being fed back to the flapper via spring 34. Chambers 43, 44 are connected respectively to chambers 40, 39 at opposite ends of piston 36, these latter chambers containing springs 38 which urge the piston to a central position. When the relays 30 are energized, the respective relay valves 7, 8 are moved in opposite directions and the respective floating piston valves are moved in directions opposite to the directions of movement of the relay valves. If the power supply to one relay 30 should fail, the corresponding relay valve is moved by the movement of the other relay valve and causes the corresponding floating piston valve to move in the same direction as a result of chambers 43, 44 being connected to chambers 40, 39. Such movement of the floating piston valve vents a chamber 27 of a safety valve 26 thereby closing the latter to cut-off the fluid supply to the faulty electro-hydraulic relay 30.
Patent GB-1484478-A (GB)
Title: Shelf storage system
IPC: B62B3/04
Filed: 1974-09-03
Abstract: 1484478 Shelf storage systems H-R HALDIMANN [trading as HALDIMANN CONSULTANTS] 3 Sept 1974 [6 Sept 1973] 38354/74 Heading A4T A storage system comprises one or more shelves on which run one or more storage units each of which comprises a wheeled frame 10, 11 disposed below the rotational axes of the wheels and a second part, e.g. a pallet or box or hopper removably supported on the frame.
Patent GB-326584-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04M1/60
Filed: 1928-12-31
Abstract: 326,584. Cohen, B. S. Dec. 31, 1928. Sub-station circuits with amplifiers. - At the sub-stations of a public telephone system, a highquality and stable form of transmitter, e.g. electromagnetic, is employed, and its output is amplified before being connected to the line circuit. In the example shown a four electrode valve 3 is used, one grid 3<a> being connected to the output side of the transmitter transformer 2 whilst the space-charge grid 3<b> is connected to a point between the bell set 10 and condenser 11 bridged across the line. The amplified voice currents are connected to line through a transformer 4. The valve filament 6 is heated from the exchange battery through a resistance 8 and the plate voltage is received over the line 5 from the same source. Systems employing two-valve transfomer-coupled amplifiers in which triode valves derive both high and low voltage from the exchange battery are described. Specification 127,366 is referred to.
Patent GB-992980-A (GB)
Title: Cathode-ray tube fabrication
IPC: H01J29/87
Filed: 1962-10-11
Abstract: 992,980. Laminates and laminating. RADIO CORPORATION OF AMERICA. Oct. 11, 1962 [Nov. 13, 1961], No. 38638/62. Drawings to Specification. Heading B5N. [Also in Division H1] A polyethylene terephthalate or like film is bonded to a cathode-ray tube by softening it by infra-red heating while clamped over a chamber containing the tube, and applying it to the latter by suction within, or excess pressure outside, the chamber. Epoxy resin adhesive may be applied to the tube before or during the bonding operation. The film margins may be clamped around the tube by a steel or nylon strip and the surplus material trimmed away.
Patent GB-1243797-A (GB)
Title: Photographic contrast control
IPC: G03C5/26
Filed: 1968-08-14
Abstract: 1,243,797. Controlling contrast. ITEK CORP. Aug. 14, 1968 [Aug. 30, 1967], No. 38780/68. Headings G2C and G2H. The contrast in a photographic system in which the photo-sensitive material is a photo-conductor e.g. TiO 2  is controlled by (1) (a) uniformly heating during or after photoexposure of the imaging medium prior to development and optionally (b) uniformly allowing a period of time to elapse between formation of the latent image and its development and then (2) developing to form an image of decreased contrast. An image of increased or decreased contrast can be obtained by respectively heating either the unexposed or exposed areas by using an original with a heat absorbent image therein.
Patent GB-839043-A (GB)
Title: Improvements in or relating to drying and ironing machines
IPC: D06F67/00
Filed: 1956-12-20
Abstract: 839,043. Ironing machines. JESUS, H. L. L., and BLANCHISSERIES ET TEINTURERIES DE FRANCE. Dec. 20, 1956 [Dec. 23, 1955], No. 38829/56. Class 138 (2). In a laundry drying and ironing machine, comprising a rotary ironing roller and non- rotary heating units having concave working faces co-operating with the roller and also convex working faces, the non-rotary heating units are made up of a number of rectilinear single-piece elements 7 (Fig. 1) in juxtaposed relationship round the roller, each comprising at least one passageway 8 for passage of a heating fluid or for housing a heating device, the longitudinal sides of each element being channelshaped to define, between adjacent elements, a passageway 9c for connection, through suction port 10, to a suction device. The cylindrical wall 1 of the roller may have a stainless woven metal fabric 4 to which is attached a covering 6. As shown in Fig. 3, the metal fabric 4 and cover 6 may be separated from the wall of the roller by a series of springs each comprising several pairs of blade units 15a, 15b, the base of each spring being attached by rivets 16 to the roller, the outer part of the spring being attached to the cover 6 by fixing means 17a. The elements 7 are connected by plates 11 (Fig. 1) having suction ports aligned with passageways 9c, each plate being screwed by screws 12 in a recess in one element and merely bearing against the adjoining element. In the ironing machine shown in Fig. 7 the heating unit is in two parts 41a, 41b, the upper part together with the roller being pivoted, for movement away from the lower part, about a pivot o. Linen is introduced into the machine by a conveyer 47 which feeds the linen between the heating unit 41a and guide bands 44, rollers 43 acting as auxiliary ironing rolls engaging in part cylindrical recesses in the convex surface of the heating unit. The linen. then passes between lower heating unit 41b and felt band 48, its direction is reversed at 41b<SP>1</SP> where it passes between the heating units and the main ironing roller 42. The ironed linen is discharged by guide bands 55 on to the horizontal portion of felt band 48, passes between the felt band 48 and conveyer band 56 and leaves the machine at 60.
Patent GB-391173-A (GB)
Abstract: 391,173. Charging batteries; switching systems. A K.T.-G E S. BROWN, BOVERI, ET CIE, Baden, Switzerland, Oct. 12, 1931, No. 28324. Convention date, June 1. [Class 38 (iv).] In a relay arrangement sensitive to current direction of the type in which electric valves which allow current to pass in one direction only are connected in series with electromagnetic relays of known construction, two relays each associated with a valve are employed connected between two voltage points and are so connected to resistances that the voltage at the responding and at the blocking valve is less than the network voltage. In the form shown in Fig. 2, two parallelconnected relay valve. combinations c1, d1 and c2, d2 are connected across lines a, b in series with a resistance e, the valves being oppositelyarranged so that one or other of the relays is operated in accordance with the polarity across a, b. The resistance e prevents the full supply voltage being connected across the valves. The arrangement shown in Fig. 2 may be modified, Fig. 4, to control the charging circuit of a battery i from the lines a, b, the battery being connected in series with 'the variable resistance h across the lines a, b in the appropriate direction under the control of the contacts operated -by relays c1, c2. A further application of the arrangement shown in Fig. 2 the control of the earthing circuit of a trolley omnibus is shown in Fig. 5, wherein a double relay valve combination is employed to ensure that the earthed overhead conductor l is always in connection with the frame of the bus, so preventing the frame from becoming dangerously charged by being inadvertently connected to the live conductor k. The Specification as open to inspection under Sect. 91 describes also an arrangement similar to that shown in Fig. 4, but employing only one relay-valve combination. This subjectmatter does not appear in the Specification as accepted.
Patent GB-1133832-A (GB)
Title: Frequency discriminator
Inventor: WELSH MICHAEL WILLIAM
IPC: H03D13/00
Filed: 1964-09-28
Abstract: 1,133,832. Frequency discriminators. EPSYLON RESEARCH & DEVELOPMENT CO. Ltd. 22 Nov., 1965 [28 Sept., 1964], No. 39483/64. Heading H3A. A frequency discriminator responsive to the ratio of two input frequencies comprises means whereby during each period of the lower frequency a gate is either opened or closed for the duration of one pulse of the higher frequency, the pulses of higher frequency passing through the gate being integrated to provide an output voltage. It is shown that if the gate is opened for one pulse the output is proportional to # 2 /# 1  where # 2  is the lower frequency and # 1  the higher frequency; and if the gate is closed for   one pulse, the output is proportional to (1 f 2 /f 1 ).   In Fig. 1 the inputs # 1  and # 2  are shaped and divided by two by respective Schmitt trigger circuits PSA and bi-stable circuits FFA. The outputs of the bi-stables feed a logic circuit comprising two bi-stables, FFB3 and FFB4, an inverter IAA/1, an AND gate GA/2, a Schmitt trigger PSA/4, and a unit EFA/1 which provides the same delay as the inverter IAA/1. The effect of these circuits is that FFB/3 produces at its Q output one pulse per cycle of the # 2 /2 input, and the complementary waveform at its Q output. One or other of these outputs is fed to gate GB/1 to allow the # 1 /2 pulses from FFA/2 to pass to a Schmitt trigger PSB/3 feeding an integrating circuit 11 which provides the output voltage at 12. The system may be duplicated (Fig. 4, not shown) so that an output is produced from one gate (GB/1) or the other (GB/4) according to which input has the higher frequency, the two outputs forming the inputs to a differential amplifier which provides a final output having a polarity in accordance with which input has the higher frequency.
Patent GB-933607-A (GB)
Title: Telomeric organo-fluorine compounds
Inventor: CASE JOHN REGINALD
IPC: C08L23/28
Filed: 1960-11-17
Abstract: The invention comprises the telomers of formulae CF3O(C3F6)nOCF3, SF5O(C3F6)nOSF5 and SF5O(C3F6)nF where n is an integer of two or more; the preparation of the first by reacting C3F6 with CF3OOCF3 and of the second by reacting C3F6 with SF5OOSF5, pre ferably under autogenous pressure at 100-300 DEG C,; and the preparation of the second and third simultaneously by reacting C3F6 with SF5OF at from 20 DEG C. to -40 DEG C. in an inert liquid reaction medium such as CFCl3.  The Provisional Specification refers generally to products RO(C3F6)nOR, where R is SF5 or a fully fluorinated alkyl group.
Patent GB-1356712-A (GB)
Title: Collating machines
IPC: B42C9/00
Filed: 1972-08-26
Abstract: 1356712 Collating sheets GEORGE HARTLEY & SONS Ltd 25 Sept 1972 [26 Aug 1972] 39917/72 Heading B8R Sheets are separated from a plurality of piles 2a and fed to stations 1a of a conveyer 1 or on to sheets already at said stations, sheets being advanced from station to station by fingers projecting through spaces between slats of the conveyer 1. The sheet or sheets at each station are moved to the next station in the time interval between consecutive sheet separating operations, so that at the end of the conveyer each stack will consist of a set of one sheet from each pile. A line of glue is deposited along the upper front edge of the top sheet at each station by means of nozzles 3, above and out of contact with the sheets connected to a glue reservoir 4, the glue being expelled by a pump 5 or piston and cylinder, through a valve arrangement 6 controlled in synchronism with the conveyer drive so as to apply glue only while a sheet is passing. When glue is not being applied, it is withdrawn into the nozzle so as not to form a blob, by gravity as the reservoir is vented to atmosphere, the period of venting being limited by a timer.
Patent GB-1204852-A (GB)
Title: Improvements in and relating to tills and like currency-storing receptacles
Inventor: MCMANUS ROBERT DAVID
IPC: E05G5/00
Filed: 1966-09-08
Abstract: 1,204,852. Till. CHUBB & SONS LOCK & SAFE CO. Ltd. 29 Aug., 1967 [8 Sept., 1966], No. 40208/66. Heading A4T. [Also in Division E2] The hopper or drawer of a till &c. is rapidly closed in an emergency by a ram operated by gas from a capsule. A switch 27 closes a circuit through a solenoid 26 which operates a plunger to pierce a capsule 21 to release gas to cause the piston of the pneumatic ram 17 to force rod 19 and fork 20 axially outwards from the cylinder, moving rod 18 which runs between the hopper sides in the path of the fork round the pivot axis 11 of the hopper to close the hopper. Switch 27 may be heat sensitive to close the till in case of fire. The chamber 22 may have a release valve for resetting. The end of the hopper's closing is damped by dash pot 29. The till may be locked at 40 to cross-bar 39 and its supports 38. Wheels 41, a brake and lockable drawer 2 may also be provided.
Patent GB-873831-A (GB)
Title: Process for preparing highly crystalline high molecular weight polymers of ethylene and catalysts therefor
IPC: C08F110/02
Filed: 1957-12-30
Abstract: Linear, high molecular weight polyethylenes are produced from ethylene in presence of a solvent (e.g. heptane) and a catalyst which is prepared by contacting (a) a crystalline compound MXn(RCOO)v-n wherein M is a Group IV(a), V(a), or VI(a) metal, X is halogen, R is alkyl or aryl, possibly halogen-substituted, v is the maximum valency of the metal and n is from 1 to v-1 with (b) an organo-metallic compound of Group II or III, preferably an Al or Zn alkyl compound, AlEt3 and Et2AlCl being specified.  Componen (a) is preferably TiCl2(RCOO)2 wherein R is an alkyl group of not more than 4 carbon atoms or an aryl group; the trichloride monobenzoate, dichloride diacetate and dichloride dipropionate of Ti are particularly preferred.  Also specified as a component (a) is a compound TiCln(CCl3COO)4-n in which the exact value of n (between 1 and 3) is not known.  The components (a) are in general prepared by reacting halides such as TiCl4 with a measured amount of the appropriate acid and/or anhydride.  Specification 851,051 is referred to.ALSO:A compound MXn(RCOO)v-n wheren M is a Group IVa, Va, or VIa metal, X is halogen, R is alkyl or aryl, possibly halogensubstituted, v is the maximum valency of the metal and n is from 1 to v-1 may be prepared by reacting a halide such as TiCl4 with a measured amount of the appropriate acid and/or anhydride.  Specified compounds are the trichloride monobenzoate, dichloride diacetate and dichloride dipropionate of Ti and a compound TiCln(CCl3COO)4-n in which the exact value of n (between 1 and 3) is not known.  Specification 851,051 is referred to.ALSO:Linear, high molecular weight polyethylenes are produced from ethylene in presence of a solvent (e.g. heptane) and a catalyst which is prepared by contacting (a) a crystalline compound MXn(RCOO)v-n, wherein M is a Group IVA, VA or VIA metal, X is halogen, R is alkyl or aryl, possibly halogen-substituted, v is the maximum valency of the metal and n is from 1 to v-1, with (b) an organo-metallic compound of Group II or III, preferably an Al or Zn alkyl compound, AlEt3 and Et2AlCl being specified.  Component (a) is preferably TiCl2(RCOO)2 wherein R is an alkyl group of not more than 4 carbon atoms or an aryl group; the trichloride monobenzoate, dichloride diacetate and dichloride dipropionate of Ti are particularly preferred.  Also specified as a component (a) is a compound TiCln (CCl3COO)4-n in which the exact value of n (between 1 and 3) is not known.  The components (a) are in general prepared by reacting halides such as TiCl4 with a measured amount of the appropriate acid and/or anhydride.  Specification 851,051 is referred to.
Patent GB-847347-A (GB)
Title: Improvements in or relating to magnetic recording media
IPC: G11B5/702
Filed: 1958-12-16
Abstract: 847,347. Magnetic recording tapes. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 16, 1958 [Dec. 19, 1957], No. 40541/58. Class 140. [Also in Group XXXV] A magnetic recording medium comprises a non-magnetic backing coated with'a dispersion of magnetic material in a binder which consists of a cured blend of 90-30 parts of an elastomeric copolymer including 55-85 parts butadiene and 45-15 parts of acrylonitrile, and 10-70 parts of an uncured thermosetting resinous condensate of an aldehyde and a phenol. In one example a freshly prepared copolymer of butadiene and acrylonitrile including modifying agents is blended with the phenolic resin materials and a ketone as solvent, added to an attritor with solvent and the magnetic material and attrited till the latter has a size of 1-2 Á. Curing agents and antioxidants are added, the dispersion is filtered, applied to a non-magnetic tape and cured between 200-350‹ F. The phenolic material may be prepared from specified aldehydes and phenols with basic or acidic catalysts. An agent for improving the compatability of the rubber and phenolic resins such as raw cashew nut shell liquid or compounds of this with phenols may be added, and these and other agents such as phenols or isocyanate substituted phenols maybe included for keying the binder to the tape. The tape may be cellulose acetate or a polyester film of the terephthalic acid-ethylene glycol type, thin paper, or fibrous material. The magnetic material may be γFe 2 O 3 , Fe 3 O 4  or natural magnetite and the weight ratio of this to binder may be between 2: 1 and 6: 1. The application of the dispersion to the tape may be by spraying, roll coating or brushing.
Patent GB-933879-A (GB)
Title: Lathe tool holder
IPC: B23B27/16
Filed: 1960-11-25
Abstract: 933,879. Tool holders; cutting tools. R. BREUNING. Nov. 25, 1960 [July 16, 1960; Aug. 20, 1960], No. 40549/60. Class 83 (3). A lathe tool holder 20, Figs. 3 and 4, is provided with an interchangeable hexagonal flat bit 28 fixed by means of a screw 16. The tool holder has a recess for the bit with a seating surface 40 inclined downwardly in the direction of the operative cutting edge 31. The bit is arranged with side faces at right angles to the upper and lower surfaces and has countersunk recesses 14 on both surfaces for the head of the fixing screw 15. Chip-guiding steps 29 are provided adjacent each cutting edge which give a positive rake angle. An intermediate plate 8, which may be of high speed steel, is advantageously interposed between the bit and its seating. The hexagonal bit 28, Fig. 3, is shaped from two equilateral triangles rotated relatively about a common centre by 25 degrees. This bit bears against the shoulders of the holder on three sides 41, 42, and 43 and clearance spaces 26 are provided at the corners of the shoulders. The chip-guiding steps are provided on three edges of the top face and on the three alternate edges of the lower face.