baber/WOPTO huggingface dataset:
Patent GB-756899-A (GB)
Title: New phosphorus esters and processes for their preparation
IPC: C07F9/655
Filed: 1954-09-23
Abstract: The invention comprises phosphorus esters of kojic acid of the general formula <FORM:0756899/IV(a)/1> where X represents an oxygen atom or a sulphur atom and R1 and R2 are the same or different and are each a lower alkyl radical containing at most 4 carbon atoms, e.g. methyl or ethyl. The novel products may be obtained by reacting an acid chloride of the general formula <FORM:0756899/IV(a)/2> with an alkali metal salt of kojic acid.  The latter may be prepared by reacting an alkali metal alcoholate, e.g. sodium ethylate, with kojic acid in alcoholic solution.  The preparation of the novel products is preferably effected in alcoholic medium, e.g. in ethanol, and may take place at room temperature or elevated temperature, e.g. at the boiling temperature of the solvent.  According to examples, a mixture of kojic acid and ethanol is boiled with sodium ethylate to form the alkali salt of kojic acid which is then treated with (1) chlorodiethylthiaphosphate or (2) chlorodiethylphosphate, the mixture being agitated at room temperature then refluxed for 45 minutes, to give the diethylthiophosphate and diethylphosphate, respectively, of kojic acid.  The products are useful as insecticides (see Group VI).ALSO:A pesticidal composition comprises a phosphorus ester of kojic acid of the general formula:  <FORM:0756899/VI/1> where X is an oxygen or sulphur atom and R1 and R2 are the same or different and each represents an alkyl radical containing at most 4 carbon atoms, (see Group IV(b)) together with a solid or liquid inert diluent.  The phosphorus esters may be used as powders, sprays, aerosols, emulsions or solutions in organic or aqueous organic media.  An ionic or non-ionic dispensing or emulsifying agent may be added in the case of aqueous emulsions.  The composition may comprise a self-emulsifying concentrate containing the active substance dissolved in the dispensing agent or in a solvent compatible with the dispersing agent.  The phosphrous esters may also be used in admixture with other insecticides.
Patent GB-1094942-A (GB)
Title: Vane controlled headlighting system
Inventor: FINCH DAN MILTON
IPC: F21V14/08
Filed: 1966-06-21
Abstract: 1,094,942. Vehicle headlamps. J. P. HAYDEN. June 21, 1966, No. 27609/66. Heading F4R. [Also in Division G1] A lighting system for vehicle headlamps consists of two headlamps each having a substantially elliptical reflector, a light source and a lens to produce an illuminated area, and graded density filters intercepting light from each headlamp, the filter 42 having a fully light-transmitting area 43, a light intercepting area 45 and area of intermediate transmission 44 so arranged that the shadows blend without sharp boundaries. The filters are moved in synchronism, either automatically in response to the lights of an oncoming car or directly by the driver. In the former case, the filters are in the form of vanes interposed between the reflectors and the lenses, mounted to pivot about axes which may be inclined to the horizontal, preferably at an angle of 30 to 45 degrees, and operated by a motor controlled by a photo-electric cell receiving light from an oncoming car a vane also being moved by the motor in front of the cell.
Patent GB-1162511-A (GB)
Title: Improvements in, and relating to, Controllers for Machines Driven by Reversible Electric Motors.
Inventor: WAGNER STEPHEN LOUIS
IPC: B23Q15/007
Filed: 1965-06-30
Abstract: 1,162,511. Control of motors. FELLOWSSTRINGER Ltd. 30 Sept., 1966 [30 June, 1965], No. 27640/65. Heading H2J. An electric motor is driven reversibly between predetermined limits by means of forward and reverse contactors FC, RC. Closure of starter switch FS energizes coil FO through interlock R5, whereby contacts F1, F2 are closed and interlocks F3, F4, F5 are opened. Motorterminals A, B are then connected to supplylines L1, L2, through interlocks R3, R4. At the limit of forward movement, cam MC engages roller RL to lift the contactor RC, so de-energizing the contactor FC and stopping the motor. Contacts F3, F4 and R1, R2 may be closed simultaneously for a short period to provide reverse-current braking. Operation in the reverse direction is initiated by closing switch RS in circuit with coil RO and interlock F5.
Patent GB-453977-A (GB)
Title: Improvements in or relating to snaffles for horses and the like
IPC: B68B1/06
Filed: 1935-10-08
Abstract: 453,977. Bits for horses. CURSETJEE, H. J. M., Combined Military Hospital, Kohat, North West Frontier Province, India. Oct. 8, 1935, No. 27814. [Class 62] The mouthpiece 1 of a snaffle-bit is flat and arched as shown, and terminates in bosses 6 which receive the pivot pins 12 of the cheek-rings 8, the latter being preferably of oval cross-section.
Patent GB-1361004-A (GB)
Title: Ferrofluid compositions and method of controlling a petroleum oil  slick or spill
IPC: C10G33/02
Filed: 1971-06-14
Abstract: 1361004 Colloidal dispersion; removing oil from water AVCO CORP 14 June 1971 [15 June 1970 (2)] 27836/71 Headings C1A and C1C A ferrofluid composition comprises a stable dispersion of magnetic particles having a saturation magnetization at ambient temperature in excess of 1000 Gauss in a carrier comprising a C 9 -C 21  paraffinic hydrocarbon or a C 7 -C 18  naphthenic hydrocarbon, the composition being stabilized by a water-insoluble, hydrocarbon-soluble surfactant, and having a spreading coefficient (as defined) of less than 20 dynes/cm. measured at ambient temperature with distilled water. The magnetizable particles may be less than 300 Š diameter. Specified carriers are kerosene, methylcyclohexane, decahydronaphthalene and tetradecane. The surfactant may be a long-chain fatty acid, alcohol or ester. Specified magnetizable particles are Fe 3 O 4 , ferrites and magnetic metals, and their concentration in the carrier is preferably 3-10 wt. per cent. A petroleum oil slick or spill is controlled by applying magnetic forces to the slick or spill containing the above ferrofluid to attract the slick or spill away from a medium (e.g. water) which surrounds the spill and with which the fluid is less miscible than with the spill, the ferrofluid being miscible with petroleum oils and tar-like heavy hydrocarbons in the spill, and providing at most 4À0 vol. per cent of magnetizable particles in the slick or spill. The ferrofluid may be used to remove or contain oil slicks on contaminated open water. The fluid may be sprayed on to the oil slick, the magnetized slick then being picked up by rotating magnets. Alternatively, fluid may be added at the periphery of the slick, which is then contained by magnetic booms. In small-scale tests, ferrofluids are added to various oils floating on distilled water, tap water, sea-water and 10% NaCl solution. The ferrofluids may also be used in breaking oil/water emulsion (see Specification 1,361,003).
Patent GB-1517551-A (GB)
Title: Electric power distribution control system
IPC: H02H3/36
Filed: 1975-07-02
Abstract: 1517551 Recognizing fault currents HUGHES AIRCRAFT CO 2 July 1975 [15 July 1974] 27839/75 Heading H2K To ensure that faults on a line 32 are recognized within a fraction of a cycle, when the line current rises above a threshold level a reference fault current waveform is generated and compared with the actual current waveform for a predetermined period. If the latter exceeds the reference waveform, a fault is assumed to exist and a control signal 35a generated to initiate protective action. The reference waveform generator comprises a source Gs normally phase-locked to the line voltage and feeding an inductance and resistance L, R representing the normal impedance of the line and load. When a detector 38 signals (39) that the line current has exceeded a threshold for more than 50 Ás, however, a switch S is closed to place a fault-simulating resistance Rs across the resistance R. The resultant reference waveform, simulating a certain level of fault, is compared (D) with the actual current waveform. If the difference, integrated (35) over a short period, is positive the control signal 35a is produced. The circuit breaking arrangement comprises contacts 10 which are separated as soon as the current exceeds its threshold. If the condition is subsequently recognized as a fault, the current is transferred to a crossed-field switch 18, which is then turned off to transfer the current to a non-linear limiting resistance 22. The limited current is finally interrupted by a circuit breaker 26.
Patent GB-299992-A (GB)
Title: Improvements in or relating to shirts and like garments
IPC: A41B1/10
Filed: 1927-10-20
Abstract: 299,992. Zeretsky, H. Oct. 20, 1927. Shirts; cuffs; collars, linen and like; draw tapes.-The button or stud fastenings in shirts, cuffs, and collars are replaced by tape and loop fastenings, the invention being applicable to fastening cuffs, collars, and vent openings of shirts, and to the attachment of cuffs and collars to the wristband or neckband respectively. As applied to the breast opening, loops 20, 23, Fig. 1, are provided on the two flaps and a tape 24 secured at one end 25 is passed through the lcops to draw the flaps together, the free end of the tape being provided with a threading element 26. One set of loops may be replaced by holes through which the loops are passed before threading the tape. For attaching the collar to the neckband, the shirt is provided with a tape 9, Fig. 2, and with loops 6, 7. These loops are passed through holes 29, Fig. 14, in the neckband of the collar and are then engaged by the tape 9. The tape is passed through the central hole at the back of the collar then through the loops 6, 7 which are previously drawn through the holes 29. A buckle 10 secures the end of the tape. A similar construction is used for securing cuffs.
Patent GB-1307237-A (GB)
Title: Projection apparatus for multiple-sector slide transparencies
IPC: G16H40/63
Filed: 1970-06-09
Abstract: 1307237 Slide projection apparatus SEARLE MEDIDATA Inc 9 June 1970 [10 June 19691 27854/70 Heading G2A [Also in Division G4] A question-and-answer system for use in medical diagnosis comprises a console 102 containing a set of slides 194, each divided into four image-bearing sectors, the slides being carried in the rotatable magazine of a slide projector for random selection and projection of a sector of any slide on to screen 114, and logic circuitry operable to control the sequence of slide and sector selection in response to patient answers recorded by selective operation of manually operable controls 118 as multiple-choice questions are shown on screen 114. A patient identity card is inserted in slot 112 to activate the console, and patient response data is fed to a remote data processor or computer via an acoustic coupler 106. The normal projection lens of the projector is replaced by a multiple lens and shutter assembly 120 comprising a separate projection lens, such as 172, 174, for each slide sector with masking apertures 176, 178. Sector selection is performed by a shutter device 132 having three shutter blades 156, 158, 160, each movable between two angular positions by rotary solenoids 144, 146, 148. The slides present questions with multiple answers in a sequence determined by the patient operation of buttons 118. Buttons 116 control slide change, re-projection, and erasure, all answers being recorded for subsequent printout.
Patent GB-1354365-A (GB)
Title: Quick-change clamping device for rotary machine tools
IPC: B23Q3/12
Filed: 1971-06-15
Abstract: 1354365 Chucks GEORG FISCHER AG 15 June 1971 [16 July 1970] 28056/71 Heading B3B A machine tool quick-change clamping device comprises flanges 2, 3 releasably clamped together by means of pins 4 each having a cutaway shank-portion which receives a co-operable portion of a clamping ring 7 which can be rotated between pin secure and release positions. As shown, the lathe spindle nose 1 has a frusto-conical shape upon which the flange plate 2 is centred and secured. The second flange plate 3, to which the work-unit 13 is secured, is clamped to the plate 2 by means of axial pins 4 and clamping ring 7. The latter has a radial rib 11 which engages in aligned grooves in the pins 4 and plate 2 and urges the pins 4 axially towards nose 1. Clamping ring 7 has recesses 21 (Fig. 2); the ring is rotatable between a release position in which each recess is aligned with a pin 4 to permit removal or insertion of the pins 4 and hence plate 3, and a clamping position in which the recesses are angularly offset from the pins and the non-recessed portions of the rib 11 engage in the grooves as aforesaid. The faces of ribs 11, and the grooves, remote from nose 1 are inclined so as to urge the clamping ring towards nose 1 as its radius is reduced by tightening of tangential bolts 10. Thus, the face of ribs 11 adjacent the nose 1 presses the pins 4 further towards nose 1. In a modification (Fig. 3, not shown), one of the bolts 10 is replaced by a hinge. In another modification (not shown) the pins 4 are retained in the plate 2, while the clamping ring 7 co-operates with a groove in a portion of plate 3. The operation is as with the above description.
Patent GB-1127097-A (GB)
Title: Process for the purification of organopolysiloxane oils
IPC: C08G77/00
Filed: 1967-06-19
Abstract: 1,127,097. Purifying liquid siloxanes. WACKER-CHEMIE G.m.b.H. 19 June, 1967 [27 June, 1966], No. 28076/67. Heading C3T. Siloxane oils, obtained by hydrolysis of organo-halogen-silanes or organosilane mixtures containing organo-halogen-silanes with not less than the stoichiometric amount of water, are purified by the simultaneous removal of hydrogen-halides, low-boiling siloxanes and/ or organic solvents, if present, by extraction with steam or the vapour of methanol or ethanol, the condensation of the acid vapour being avoided during the extraction. Steam is preferred and is generally used at 106‹ to 120‹ C. at normal pressure, though sub- and superatmospheric pressures may be used. The process may be executed batchwise or continuously in parallel or counterflow, but is preferably effected continuously in counterflow in a trickling column which is heated to prevent condensation of steam or acid vapour. Examples describe this process. The Specification also reviews the prior art processes of purifying siloxanes.
Patent GB-745764-A (GB)
Title: Improvements in or relating to process of separating mixtures of solids
IPC: B03B5/44
Filed: 1953-10-14
Abstract: Iodomethyl mercury iodide is prepared by the catalysed photochemical reaction between metallic mercury and methylene iodide.  Some H2C(HgI)2 and traces of HC(HgI)3 are present as impurities.ALSO:A sink-and-float separation of mixtures of solids, particularly for the recovery of diamonds and diamond dust, uses as parting liquid a solution of iodomethyl mercury iodide in methylene iodide.  A preliminary separation step may be carried out if desired using methylene iodide, parting S.G. 3,325.  The separated portions may be washed with methylene iodide to remove the parting liquid and then further washed with hot monohydric lower aliphatic alcohol e.g. methanol preferably, ethanol or isopropanol.  The parting liquid can be recovered from the washing liquids, or in the case of methylene iodide it can be concentrated to form new parting liquid.  The separation may be effected with the aid of centrifugal force.  More than two fractions may be obtained by choice of suitable S.G. of the parting liquids.
Patent GB-427030-A (GB)
Title: Improvements in or relating to the storage of granular materials in bunkers or the like
IPC: B66B17/26
Filed: 1933-10-13
Abstract: 427,030. Guided skip hoists; bunkers. MITCHELL, F. G., Albyns, near Romford, Essex. Oct. 13, 1933, Nos. 28404/33 and 32628 /34. [Class 78 (iii)] [See also Group X] A storage bunker 10 is provided with a vertically movable shoot 14 which rests on top of the material 24 in the bunker and ensures discharge thereof into the bunker at the lowest possible level to minimize breakage. A hopper 18, receiving material from a source 17, is raised vertically by a cable 22 under the control of wheels 19 and guides 20, and on reaching the shoot 14 lifts same to the top of the bunker and while rising automatically discharges its contents down the shoot, which is left in position on top of the material 24 when the hopper descends. The hopper 18 may have two compartments, each with an outlet closed by a hinged door 27, 28. These doors are held closed by toggle-links 29, 30, the toggle being broken by the abutment of a pivoted arm 36 against stops 38 on the shoot 14. The arm 36 is pivoted to a link 37 which can be turned to remove the arm 36 out of the path of the stop 38 and so prevent opening of one or both doors 27, 28. Curved rails 39, 40 located near the bottom of the guides 20 effect closing of the doors by engaging contact rollers 31, 41 on the toggle links 30. The shoot 14 is guided in a slot extending between the points 12 and 13 in a substantially vertical side of the bunker 10, and the shoot carries hexagonal wheels 15 over which rides a curtain 16 fixed at 55 and, if desired, weighted at its free end 61. The curtain is built up of linked plates each having its upper end turned away from the bunker, and serves to close the slot 12, 13 gradually as the bunker becomes filled. An abutment on the vertically sliding frame carrying the shoot 14 bears against the outer face of the curtain 16 to hold it up against the pressure of the material 24. Specification 397,173 is referred to.
Patent GB-922117-A (GB)
Title: Improvements in adustable electric resistance devices
IPC: H01C10/24
Filed: 1959-08-19
Abstract: 922,117. Variable resistors. HOWELL INSTRUMENTS Inc. Aug. 19, 1959 [Oct. 29, 1958], No. 28406/59. Class 37. A variable resistor comprises an elongated resistance element 10 carrying engageable indicia (such as the holes 62) previously positioned in accordance with progressive electrical measurements along the element, the element arranged to be wound between two reels having a common axis, a contact (such as 40) being provided, capable of relative movement along the element and indicia engaging means( such as the sprocket 58) for locating the position of the contact relative to particular indicia. As shown, a moulded insulating body 16 has a cylindrical portion 20 carrying two discs 42, 44 and a sprocket 58. A resistive tape 10 of the type described in Specifications 833,347 and 833,351 is previously perforated in accordance with progressive electrical measurement along its length. One end of the tape 10 is fixed to the cylinder 20 near the left-hand end and wound on the reel formed by the space between the disc 42 and the left-hand end of the casing 72. The tape 10 is then carried over guide arms 36, 38 of a cage-like member 32 attached to the shaft 26. The tape is retained on sprocket 58 by an arm 34 which also carries a sliding contact 40. The other end of the tape is secured to the right-hand end of cylinder 20 and wound on the reel formed at the right-hand side of disc 44. The contact 40 is connected to a yoke 40a which rotates against a slip ring 64 connected to a terminal 68. When shaft 26 is rotated, the guide arms 34, 36 wind the tape 10 from one reel to the other, the tape moving around the sprocket 58 so that the contact 40 travels from one end of the tape to the other. The shaft 26 may alternatively be fixed and the body 16 rotated. Figs. 11, 12 (not shown) relate to a slidable mounting of the arm 34 on the disc 32 to facilitate assembly. Specification 857,597 also is referred to.
Patent GB-285155-A (GB)
Title: Improvements in means for taking up and paying out flexible electric cables supplying power to moving machines
IPC: H02G11/00
Filed: 1926-11-12
Abstract: 285,155. Eley, C., V. A. Nov. 12. 1926. Supporting arrangements for collectors. - In apparatus for paying out and taking up the slack of flexible electric cables supplying power to moving machines such as are used in agriculture and horticulture, the cable 4, Fig. 1, is carried to the machine 3 from a switch 18 through a tubular arm 1 which is mounted for universal movement on a post 13 and is counterbalanced by weights 6 or a spring. The machine has a bridge member 21 with a swivelling guide pulley 25 and a cable drum 26 which may be provided with a spring to assist in the take up. The swinging arm may be mounted on a stationary support or on the machine and may coact with a spring-drum.
Patent GB-758635-A (GB)
Title: Improvements in or relating to the sorting of articles
IPC: B07C5/342
Filed: 1952-11-12
Abstract: 758,635. Electrostatic separators. BAIGENT, G. M. Nov. 9, 1953 [Nov. 12, 1952], No. 28533/52. Class 117. [Also in Group XL(b)] In a method of sorting, all the articles to be sorted are given an initial charge which is subsequently removed to an extent dependent on the light reflectance of each article so that when the articles fall between charged plates they are deflected to an extent depending on their remaining charge. The removal of the charge is controlled by a photo-electric cell receiving light reflected from the object. As shown articles are fed singly by a feeder mechanism which may be as described in Specification 709,473 [Group XXX] to position 2 where they are examined by a photo-electric cell 6. The articles are charged from a device which may be connected to the feeder 1 by means of a brush connection. The photoelectric scanning arrangement may be as described in Specification 712,113 [Group XL(b)] in which when an article having a surface blemish passes through the receiving device a signal is produced in the photo-sensitive element 6 which produces a discharge between electrodes 8 and 9 and the article falls between them. Thus the charge on the article is removed and it falls undeflected between charged plates 3, 10 into the left hand side of a container 4. Articles free from blemishes retain their charge and fall into the right hand compartment of the container. Specifications 617,276, 642,283, 642,284 and 652,782 [all in Group XL(b)] also are referred to.
Patent GB-948350-A (GB)
Title: Improvements in or relating to cyclometer registers
IPC: G06M1/14
Filed: 1960-08-18
Abstract: 948,350. Counting apparatus. DENIS FERRANTI METERS Ltd., and R. H. WOLFENDEN. Aug. 8, 1961 [Aug. 18, 1960], No. 28622/60. Heading G4D. In a cyclometer-type counter magnetic means serve to advance one or more of the rollers through the last division of each revolution. Each of the rollers 4, except the units one 4a, is driven by the adjacent roller of lower order through a Geneva-type mechanism. Driven roller 4a has an eccentrically mounted pin 11 which projects through an arcuate slot 12 in a driving wheel. A permanent magnet 14 is fixed to the frame 3, and a permanent magnet 15 is fitted radially within each roller 4a, 4b, 4c . . . in such a position that either attraction or repulsion of the magnets will advance by one unit a particular roller when the numeral '9' appears at a window 10. Magnets 14,15 may be made from bonded barium ferrite.