baber/WOPTO huggingface dataset:
Patent GB-1427491-A (GB)
Title: Process for producing cis-1,4-polyisoprene rubber
IPC: C08C19/28
Filed: 1974-06-27
Abstract: 1427491 Maleinized polyisoprene KURARAY CO Ltd 27 June 1974 [13 July 1973] 28616/74 Heading C3P High cis-1,4-polyisoprene is modified by reaction with maleic anhydride (or a derivative thereof) in a homogeneous solvent comprising 10-50 vol. per cent of an aromatic hydrocarbon dissolved in 90-50 vol. per cent of an aliphatic or alicyclic hydrocarbon. A radical initiator may be present. The starting material may be the product of a solution polymerization process conducted in an aliphatic or alicyclic hydrocarbon, to which aromatic hydrocarbon is added prior to the reaction. In examples the solvent mixture is n-hexane/toluene, n-butane/ xylene, isopentane/benzene or cyclohexane/ xylene, and the radical initiator is benzoyl peroxide, lauroyl peroxide or diisopropyl peroxydicarbonate.
Patent GB-308566-A (GB)
IPC: C01B25/30
Filed: 1928-10-05
Abstract: 308,566. Benckiser, T., Reimann, A., and Reimann, A., (trading as Benckiser, J.A.). March 23, 1928, [Convention date]. Grant of Patent refused. Disodium phosphate having two molecules of water of crystallization is obtained directly from a pure solution of the salt by crystallization above 50‹ C. The solution may be otained by neutralizing with soda or soda lye purified concentrated phosphoric acid containing 600-700 grms. P2O5 per litre; or a more, dilute solution may be, used and be evaporated under reduced pressure until crystals precipitate.
Patent GB-534750-A (GB)
Title: Improvements in or relating to frequency control circuits
IPC: H03L7/183
Filed: 1939-10-26
Abstract: 534,750. Measuring phase difference. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 26, 1939, No. 28781. Convention date, Oct. 26, 1938. [Class 37] [Also in Group XXXV] A voltage representative of the phase relation between two sources of voltage waves or impulses is developed in a condenser 22. The output from a frequency divider 16 producing a frequency derived from an oscillator 10 and equal to or in harmonic ratio to that of a reference source, such as a mains supply, is applied to homologous points of a bridge circuit of rectifiers 17 ... 21 through a transformer 23 and a resistance capacity circuit 26, 27 whereby a steady voltage is built up on the condenser 27 almost equal to the peak value of the impulses applied. Condenser 22 is connected in a circuit comprising the power line terminals and the other homologous points of the bridge. The impulses from the frequency divider 16 can only increase the normal charge of the condenser 22 when the phase relation between the two sources, which are effectively in series through the rectifiers during odd half waves, is such as to produce an impulse voltage exceeding that in condenser 27, and reduction of the charge of the condenser 22 will only occur when due to an opposite phase shift, this impulse voltage is less than the voltage of condenser 27. Any suitable bias voltage may replace the R.C. circuit 26, 27. In modifications using two rectifiers only in series an R.C. circuit is used in series with each rectifier and the mains supply circuit is taken through the centre tap of the secondary of the transformer supplied by the controlled frequency impulses. For ease of balancing the R.C. circuits are adjacent and comprise respective sections of a resistance with a movable centre tap forming the mains supply connection. Specification 458,161, [Group XXXV], is referred to.
Patent GB-913193-A (GB)
Title: Improvements in or relating to digging, shovelling and like apparatus
Inventor: HOWLETT CLAUDE WILLIAM
IPC: E02F5/02
Filed: 1960-08-19
Abstract: 913,193. Trench-excavating equipment. LEEFORD (LONDON) Ltd. Aug. 21, 1961 [Aug. 19, 1960], No. 28829/60. Class 68 (1). In a trench-excavating unit for attachment to a tractor material can be ejected by a plate 32 from either end of an open-ended scoop 31 as it is moved by a ram 26 in one direction or the other along a supporting beam 21, the plate 32 being rigidly secured to the underside of the beam 21. The beam extends substantially parallel to the direction of advance of the tractor and is so supported thereon that it can be pivoted laterally of and swung vertically of the tractor.
Patent GB-477483-A (GB)
Title: Improvements in or relating to drawing or drafting apparatus for use in the manufacture of yarn
IPC: D01H5/28
Filed: 1936-10-23
Abstract: 477,483. Drawing or drafting apparatus. STEVENS, A. H. (Whitin Machine Works) Oct. 23, 1936, No. 28859. [Class 120 (ii)] Cotton yarn or roving is manufactured by continuously drafting sliver from a drawing frame in successive draft stages, applying the greater part of the draft at an early stage and the remainder at the later stage or stages and false twisting the material after the high draft stage. In a fly-frame for this purpose sliver is drawn by rollers A over a lifter roller 4 and through a guide trumpet 5 mounted on a traverse bar 6, high draft, e.g. according to the Casablancas system, is applied by belts B delivering to rollers C, the material then passing through a twisting head 7 to rollers D and thence to rollers E, F and a bobbin 1. The total draft, e.g. from 15 to 80, is divided in three main stages A-C, C-D, D-F, having drafts of 5-12, 1-2 and 3-6 respectively. The minor stages A-B, D-E have only a small draft of 1À1-1À5. Specification 185,733, [Class 120 (ii)], is referred to.
Patent GB-1180762-A (GB)
Title: Improvements in and relating to non-magnetic alloys and balance springs.
IPC: C22C38/40
Filed: 1967-06-22
Abstract: 1,180,762. Iron alloys. SOC. METALLURGIQUE D'IMPHY. June 22, 1967 [July 21, 1966], No.28899/67. Heading C7A. Non-magnetic alloys consist, by weight, of The alloy given by way of example consists of Ni 27À4%, Cr 5À7%, C 0À7%, Si 0À3%, Mn 1À9%, W 3‹5%, Fe remainder. Balance springs, particularly for electrically operated watches, may be made of the alloy.
Patent GB-882802-A (GB)
Title: Improvements in and relating to telescopic hydraulic pit-prop
Inventor: NOE OSKAR
IPC: E21D15/51
Filed: 1958-09-09
Abstract: 882,802. Mine roof supports. BWG BERWERK-UND WALZWERK-MASCHINENBAU G.m.b.H. Sept. 9, 1958, No. 28909/58. Class 20(2) [Also in Group XXIX] A telescopic hydraulic pit prop has two relief valves 9, 16 mounted on the head 4 of the inner prop part. A ball valve 16 controlling a small passage 15 yields under a small overload, while a spring-pressed valve 9 which controls a large passage 7 yields under a greater overload. The stem of the valve 9 carries a piston 10 which is balanced by pressure from the reservoir 2 against that from the pressure chamber of the outer prop part through a tube 3. A rotary cam member 21 is provided to open the valve 9 which then serves as a release valve. In a modification, the ball valve 6 is mounted within the valve 9. Specification 847,386 is referred to.
Patent GB-1364373-A (GB)
Title: Cylindrical magnetic domain display system
IPC: G09G3/34
Filed: 1972-06-21
Abstract: 1364373 Matrix displays INTERNATIONAL BUSINESS MACHINES CORP 21 June 1972 [30 June 1971] 28935/72 Heading G5C [Also in Divisions H3-H5] A flat display system uses a parallel line pattern of cylindrical magnetic domains which are developed in a magnetic sheet of orthoferrite or garnet and influence the transmission of polarized light, the pattern being formed by cyclically serially entering a column of domains from a domain generator and propagating the entered domains in parallel by a distance of one line spacing. A system is shown in outline in Fig. 1 in which a magnetic plate 10, biased by a magnetic field Hz, has a series of soft magnetic propagation elements 24 along which domains are propagated by an in-plane rotating magnetic field H from a source 26. A write pulse source 20 controls a domain generator 18 for entering domains into the sheet. When the full domain pattern is entered a control circuit 30 causes a light activation circuit to operate a light source 16 which may consist of one or more light emitting diodes. This light passes through the magnetic sheet after polarization by a polarizer 12 and the location of cylindrical domains is made apparent by an analyser 14. Preferably the domain locations are indicated by light areas on a dark background, but the converse is possible. Fig. 6 shows a domain propagation pattern of magnetically soft material elements 52, serial entry from a domain generator 18 in the X-shift direction being effected by an alternating polar pattern produced in the elements by an inplane rotating field H of given intensity. Each time a serial entry of domains 54 in the X-shift direction is completed, the in-plane rotating field H is raised in intensity for one complete cycle so as to enable a parallel shift by one line to take place along Y-direction propagation paths YSR-1 to YSR-N. Discrimination between X and Y domain movements is provided by the difference in shape between adjacent propagation elements in the two directions of shift and by their spacing. Alternatively the completed line of serial domains may be displaced in the Y direction by energizing a conductor loop parallel to the lines, Fig. 7 (not shown). Other propagating elements may be conductor hoops or wedge-shaped patterns etched in the sheet. The display system may form part of a wrist-worn television receiver which is described schematically with reference to Fig. 9 (not shown). Magnetic sheet materials of sufficiently high mobility to operate at commercial television data rates are Y 3 Fe 3À5 Ga 1À5 O 12 , Gd 1À5 Y 1À5 Fe 4À52 - Al 0À48 O 12  and Sm 0À37 Gd 2 Dy 0À63 Fe 5 O 12 .
Patent GB-408961-A (GB)
Title: Improvements in circuits for the operation of electrical relays
IPC: H01J17/04
Filed: 1932-10-17
Abstract: 408,961. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c/o General Electric Co., Wembley, Middlesex. Oct. 17, 1932, No. 28957. [Classes 40 (iii) and 40 (v).] A relay for use in A.C. or D.C. telegraphy or for like purposes is fed by a gas-filled valve and shunted by a condenser in order that the anode current may be started and stopped at approximately' equal values of grid-potential. The gas-filled valve V has a characteristic such that when the grid-potential is becoming positive and reaches the striking potential, anode-current begins to flow and reaches saturation ahnost at once. When the gridpotential is becoming negative, however, anodecurrent would continue to flow, in the absence of the condenser C, until a cut-off potential much lower than the striking potential is reached, so that the operation of the relay, which forms part of the resistance R, would be prolonged and distortion of signals would result. According to the invention the condenser C is made large enough to raise the cutoff value of the grid voltage to a value nearly equal to the striking potential, and also to prevent the valve from cutting off during the negative half-waves of an alternating signal. A low resistance r is included for the protection of the valve against an unduly large rush of current when the valve strikes. Specification 373,383 is referred to.
Patent GB-990997-A (GB)
Title: Support roll arrangement for backed-up roller levellers
IPC: B21D1/02
Filed: 1961-08-11
Abstract: 990,997. Straightening. F. K. MAUST. Aug. 11, 1961 [Aug. 15, 1960], No. 29072/61. Heading B3E. A roller type sheet-metal straightening machine has short back up rolls 44 positioned longitudinally of the work rolls of the first line such that they are in line with the space between any two adjacent short back-up rolls 74 of the second line of work rolls. Intermediate rolls 41, 66 may be provided between the work rolls and back-up rolls. As seen in Fig. 2, the machine is of the double tilt type, the upper and lower banks each being divided to form three sections 54, 26, 55, and may be used in conjunction with power wind-on and braked wind-off drums to provide tension on the workpiece.
Patent GB-720188-A (GB)
Title: Improvements in or relating to a carry circuit for a parallel accumulator
IPC: G06F7/50
Filed: 1951-12-12
Abstract: 720,188. Digital electric calculating apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Dec. 12, 1951 [Dec. 28, 1950], No. 29092/51. Class 106 (1). In an electronic accumulator comprising, in each order, digit read-in means and a multielectrode gas-discharge tube of the glow transfer type with ten digit-representing cathodes arranged in a closed glow transfer path and a transfer cathode interposed between each pair, carry circuits between successive orders each include a carry storage trigger circuit connected to the digit cathode representing the digit 9 so that when a glow discharge leaves that cathode the trigger circuit is switched to a predetermined condition which effects transfer to the next higher order. At the beginning of a read-in cycle a negative pulse applied at a terminal 15 flips a trigger 10 into the LH conducting condition so that the voltage on the first grid of a valve 26 is raised and each subsequent input pulse at the third grid causes the valve to conduct, lowering the potential on the transfer cathode 33 of the multicathode gas discharge tube 30 and causing the glow to be stepped on to the next digit cathode 35. The timing of a negative, trigger-restoring pulse on a terminal 14 determines the magnitude of the digit. When the glow is stepped on from the cathode 37 representing the digit 9 to the " O " cathode 40 a negative pulse appearing on a connection 19 flips a carry storage trigger 11 to its L.H. conducting condition and the rise in potential on the R.H. anode is communicated to the terminal 49 of the next higher order. When therefore a " carry gate " pulse is applied to all the terminals 51 after the entry period those valves 28 having a positive " carry " voltage applied to their first grids will conduct and cause the carry pulses to step on the associated multicathode tubes 30. The duration of the " carry gate " pulse is long enough to allow for the operation of a carry produced by a carry from a lower order to proceed through all orders of the accumulator. In an alternative arrangement the twin-valve trigger circuits are replaced by single-valve trigger circuits of the secondary emission type as described in Specification 720,179 and the multigrid tubes are replaced by rectifier coincidence gates operating the counter tube through a triode driver.
Patent GB-536100-A (GB)
Title: Improvements in or relating to facsimile receivers
IPC: H04N1/00
Filed: 1939-11-01
Abstract: 536,100. Facsimile receivers. STANDARD TELEPHONES & CABLES, Ltd., (Deakin, G.). Nov. 1 1939, No. 29147. [Class 40 (iii)] A facsimile receiver is provided with a supply roll PR of prepared paper and a feed roller FR for automatically rewinding a sheet round the receiver drum RD after the used sheet has been unwound therefrom. In the arrangement shown in Figs. 1 and 2, the drum RD and the feed roll FR are driven from a common shaft S' through clutches of the kind described in Specification 201,256, [Class 80 (ii)]. When a record has been completed on the drum RD an electromagnet MS is automatically energized and operates the clutch driving the drum. As soon as the drum begins to rotate an insulated stud thereon closes contacts CS<SP>1</SP> to cause circuit of electromagnet MS to be held closed through contacts K<SP>1</SP>. The recorded sheet is unwound from the drum and stripped off by an arm RA. A spring SG then makes contact with the drum thereby operating a relay R which causes electromagnet MP to be energized to operate the clutch driving the feed roller FR. The fresh paper is fed through a chute PC to the drum RD whereon it is gripped by teeth SW. When the winding is completed, contacts CS<SP>11</SP> in circuit of electromagnet MC are closed by stud CS, thereby operating knife K to cut the paper and opening contacts K<SP>1</SP> in holding on circuit of electromagnet MS, causing rotation of drum RD to stop. Also, contact between spring SG and drum RD is again broken by the intervening paper, and relay R is switched off causing the drive of feed roller FR to stop. In a modification, the circuit includes contacts controlled by a stud on the feed roller FR.
Patent GB-353776-A (GB)
Title: Improvements in or relating to the control of doors
IPC: E05F15/20
Filed: 1930-09-30
Abstract: 353,776. Operating doors electrically. LYONS & CO., Ltd., J., Cadby Hall, DOUG. LASS, P. G., 12, Auriol Man. sions, both in Kensington, and PASSMORE, C. R., Ardneil, Oakleigh Park, Whetstone, both in London. Sept. 30, 1930, No. 29249. [Class 65 (i).] An electrically operated door is opened in response to the interruption of a beam of light falling on a light-sensitive cell, caused by a person approaching the door. The door remains open for a predetermined interval after the interruption of the light or after any subsequent interrup. tion during this interval. When light from a lamp 2 is momentarily cut off from the light-sensitive cell 3, the variation in the current in the cell, amplified by the thermionic valve 23, energizes a pilot relay 4 to close a contact 4b for a moment. The closing of this contact completes a circuit from mains L to a coil 5a, which closes a contact 5b. This contact completes the circuit for a relay 15, and through the contact of a relay 6 to a time relay 19. Relay 15 energizes a solenoid 1, which opens the door against the action of a spring. After a predetermined interval, the contact of relay 19 closes and energizes a coil 5d, which attracts the armature 5c and opens contact 5b, thus de-energizing relay 15 ; the solenoid 1 is therefore de-energized, and the door closes ; relay 19 is also de-energized, and returns immediately to its initial position. The closing of contact 4b will also momentarily energize the relay 6, and the contact of this relay will open for a moment; this has no effect on the operation described, but if the beam of light is interrupted a second time during the operation, the relay 6 will again be energized momentarily and will break the circuit of the time relay 19 ; the relay 19 will therefore drop, and will not close its contact until the correct time has elapsed after the second interruption of the light. The door will therefore remain open for a number of persons following one another. The coil 5a is made stronger than 5d, so that in case of simultaneous energization of these two coils the armature 5c will remain against contact 5b.
Patent GB-309385-A (GB)
Title: Improvements in advertising signs and the like
IPC: G09F13/14
Filed: 1927-11-02
Abstract: 309,385. Bridgman, V. Nov. 2, 1927. Signs.-In advertising signs and the like of the kind described and claimed in Specification 279,521, a stationary piece or strips 5 of coloured glass &c. are located above or below the stencil 1 so that the reflected image is coloured in a way that changes as either the sign or the observer moves. The stencil 1 is covered by a sheet of glass 2 which may be fluted, corrugated, or prismatic, and the strips 5 may be angular to produce prismatic colour effects.
Patent GB-248480-A (GB)
Title: Improvements in and relating to surface traversers for railways and the like
IPC: B61J1/10
Filed: 1924-12-06
Abstract: 248,480. Ransomes & Rapier, Ltd., and Bowtell, W. J. Dec. 6. 1924. Drawings to Specification. Traversers.-Surface railway traversers have at each end one or more ramps additional to the usual end ramps so that the bogies of vehicles are lifted through the full height in two or more easy stages. The end ramps are connected to the traverser by springs. To reduce the amount of lift, the ends of the traverser are formed of plates.
Patent GB-1192937-A (GB)
Title: Process for Producing Collagenase
Inventor: CHIULLI ANGELO JOSEPH
IPC: A61K9/00
Filed: 1967-06-26
Abstract: 1,192,937. Medicines comprising enzymes. AGRICULTURAL BIOLOGICALS CORP. 26 June, 1967 [8 July, 1966], No. 29324/67. Heading A5B. [Also in Division C3] An enzyme composition having proteolytic and collagenase activity (see Division C3) has medical applications for debridement of necrotic and moribund tissue. Examples are given of ointments containing 99.5% petrolatum and 0.5% of enzyme, and 98.5% petrolatum, 1 % of a stneptomycin/penicillin mixture and 0.5% of enzyme. The enzyme may also be injected as a 0.2 to 5% solution in physiological saline.
Patent GB-872299-A (GB)
Title: Improvements in or relating to valves for controlling fluid
IPC: F16K3/26
Filed: 1957-09-18
Abstract: 872,299. Valves. RAY GLASS Ltd. Sept. 18,1957, No. 29351/57. Class 135. A valve comprises a circular valve body 1 having transverse and coaxially aligned ports 22, 23 controlled by a plunger 18 having an annular peripheral groove 20. The plunger is screw-threaded and coacts with a nut 7 secured to the valve body by cement filling in grooves 6. The body may have several sets of transverse and coaxially aligned ports arranged parallel to each other, each set being associated with a groove so that fluid may be controlled in several pipe-lines simultaneously. The body and plunger may be made of non-corrosive materials, e.g. glass, plastics or metal having a non-corrosive coating. The plunger is coated with a suitable lubricant such as a colloidal graphite and/or a silicone oil before insertion in the valve body.
Patent GB-892051-A (GB)
Title: Improvements relating to the manufacture of iced lollipops
Inventor: MIDGLEY TERENCE
IPC: A23G9/32
Filed: 1957-09-18
Abstract: 892,051. Ice lollies. TREAT PRODUCTS Ltd. Sept. 18, 1958 [Sept. 18, 1957], No. 29355/57. Class 28 (1). Sugar or chocolate confectionery 1 is moulded around a stick 3, or with a groove to receive a stick, which can hold it in an ice mixture 5, e.g. of fruit juice which is then frozen round it. The centre may be moulded with figures on its outer surface.
Patent GB-398659-A (GB)
Title: Manufacture of tertiary organic phosphates
IPC: C07F9/12
Filed: 1932-10-21
Abstract: Tertiary organic phosphates, i.e. triaryl, trialkyl and mixed tertiary organic phosphates, are manufactured by oxidizing the corresponding tertiary phosphites.  Suitable oxidizing agents are those which can be converted into a lower state of oxidation by the loss of oxygen, e.g. arsenic pentoxide, sulphuric anhydride, sulphuric acid, fuming sulphuric acid or vanadic anhydride, also oxides of nitrogen, peroxides such as hydrogen peroxide or barium peroxide and per-acids such as persulphuric acid.  The reaction may be conducted with cooling, and if required in the presence of an indifferent solvent.  Examples describe the production, by the action of gas containing sulphur trioxide, of: (1) triphenyl phosphate from triphenyl phosphite; (2) tributyl phosphate from tributyl phosphite. Samples have been furnished under Sect. 2 (5) of: (I) diphenyl-o-cresyl phosphate, produced by the action of sulphuric acid contact furnace gases on diphenyl-o-cresyl phosphite (obtainable by the action of o-cresol on diphenylphosphorous acid chloride); (II) monophenyldibutyl phosphate produced by the process of example (1) from monophenyldibutyl phosphite (obtainable by treating phosphorus trichloride with excess of butyl alcohol and reacting the dibutylphosphorous acid chloride so formed with sodium phenate).