baber/WOPTO huggingface dataset:
Patent GB-188517-A (GB)
Title: Improvements in apparatus for automatically regulating the draught in steam generator furnaces
IPC: F23N3/08
Filed: 1921-10-31
Abstract: 188,517. Dehn, F. B., (Thermogen Equipment Co., Inc.). Oct. 31, 1921. Switches, partly electromagnetic; pneumatic and other actuation.-Relates to automatic pressure-controlled switches for draught regulating in steam-generator furnaces. A rod 12 serves as an impelling device for a switch 20 of an electric blower 21, as shown in Fig. 1, or operates directly a damper 23 through a stiff spring 22<1>. The rod 12, guided by a sleeve 13 and rod 14, carries a screwed nut 16 rotated by a motor 19, controlled by a series of circuit-makers 82 and a reversing switch. These, in turn, are operated by the upper and lower ends of a pivoted lever 25, moved about its fulcrum in accordance with variations in steam-pressure in the boiler 10 by a diaphragm 34, lever 31 and rod 30. Motion of the rod 12 is completed in definite steps, circuit breakers 73 - - 79, adjustably arranged along a bar 80, being opened successively by the roller 81 mounted on the rod 12. As shown in Fig. 3, each circuit-maker 82 comprises a freely-mounted conducting rod 43 permanently in contact with a mercury-cup 44 and placed in contact with the cup 47 by one end or the other of a curved wire 46 as the finger 49 on the lever 25 engages a vertical pin 49 on the rod 43. The reversing switch, Fig. 4, comprises an insulated rod carrying at its ends plates 53, 60 connected respectively to wires 56, 57 and 63, 64. A quadrant 68 on the lower end of the lever 25 carries fingers 67 corresponding to the number of switches 82, and these successively engage the vertical pin 69 on the rod 52. Contact is thus made at one end of the rod between the cup 55 and one or the other of the cups 58, 59, and at the other between the cup 62 and one or the other of the cups 65, 66. The cups are connected in the circuit as shown in Fig. 2. The reversing switch is maintained closed by the electromagnets 71, 72 attracting an iron or steel piece 70 mounted on the underside of the rod 52. On the closing of a switch 82, current passes from the main 85 by the circuit 79, 71, 66, 62, armature 86, 87, starting resistance 88, 89, 90, 91, 82, 92, 76, 93, 55, 59, 94, 65, 95 to the main 85. This lowresistance current operates the temporary coil 90 of one of a series of relays 50 to close the maincurrent switch 96 and short-circuit the starting- resistance 88 and switch 82. By these means, arcing at the mercury cups on the opening of the circuit is prevented.
Patent GB-1432157-A (GB)
Title: Gypsum composition
IPC: C04B22/08
Filed: 1973-06-19
Abstract: 1432157 Plaster compositions JAPAN SYNTHETIC RUBBER CO Ltd 19 June 1973 [19 June 1972 4 Aug 1972 6 Nov 1972] 29031/73 Heading C1H Aqueous slurries of calcined gypsum also comprise a polyvinyl alcohol and an aqueous solution of a metal compound (other than calcium sulphate) of a metal of Group Ib, II, IIIa, IV, Vb, VIb, VIIb or VIII of the Periodic Table appearing in the "Handbook of Chemistry and Physics" 51st Edition, published by The Chemical Rubber Co., Ohio, U.S.A. The metal compounds used in the examples are copper acetate, molybdenum dissolved in ammonia, titanium sulphate, titanium sulphate + hydrochloric acid, zinc acetate + aqueous triethylene diamine, potassium bichromate, aluminium chloride + hydrochloric acid, stannous chloride + hydrochloric acid, vanadium pentoxide dissolved in hydrochloric acid, ferric chloride, and calcium acetate + aqueous ammonia. The polyvinyl alcohol can be a saponification product of a polyvinyl ester or of a copolymer or graft copolymer. The composition prepared in the examples also include ingredients such as glass fibre, polypropylene fibre, foamed polystyrene beads, volcanic glass, carboxylated SBR latex, urea-formaldehyde resin, melamineformaldehyde condensation products, and acrylonitrile-butadiene latex.
Patent GB-790147-A (GB)
Title: Improvements relating to grinding wheels
Inventor: BLAKE ALBERT JAMES WILMOT
IPC: B24D7/16
Filed: 1955-10-12
Abstract: 790,147. Abrasive tools. FLEXTOL ENGINEERING CO., Ltd. Oct. 12, 1956 [Oct. 12, 1955], No. 29103/55. Class 60. A device for attaching a grinding wheel 13 to the flange 1 of a rotary tool comprises a circular plate 9 which is provided with a peripheral flange 8, a central dished portion, a central aperture and one or more eccentric holes in the dished portion for engagement with complementary eccentrically-arranged protrusions on the flange. The central aperture may be of triangular shape for engagement by three pins 3 on the flange 1, and when one eccentric hole is provided in the plate, this is engaged by a pin 6 on the flange. The flange 1 is mounted on the screw-threaded end of the tool shaft 2 which projects through the triangular aperture so as to permit the mounting of the plate 9 by means of a nut 11 and washer 12. The end of the shaft 2 and the back of the nut 11 do not project beyond the edge of the lip 8. The grinding wheel 13 is bonded to the shot-blasted face 7 of the plate 9 by adhesive under heat and pressure.
Patent GB-364055-A (GB)
Title: Secret combination keyless lock comprising a series of concentric cylinders
IPC: E05B37/02
Filed: 1930-09-29
Abstract: 364,055. Permutation locks. JENICOT, E. J., 55, Rue du Bailli, Brussels. Sept. 29, 1930, No. 29171. [Class 44.] The bolt C of a lock is shot or withdrawn by a follower I<1> on a spindle D rotatable by a knob or handle D<1>, and is locked in shot position by a number of sliding members H held raised in engagement with a recess in the bolt by corresponding springs G mounted on a member G<2>. The springs G may be individually depressed, to allow members H to fall clear of the bolt, by corresponding cams F<1> secured on the inner ends of sleeves E loosely mounted on spindle D, the outer ends of sleeves E being flanged to provide permutation members M, each bearing a series of letters &c. All the members M must be set to predetermined position to depress the springs G to withdraw all the members H in order to release the bolt, which can then be operated by rotation of knob D<1>. Each cam F<1> is formed on a ring F secured to its sleeve E by a screw K engaging one of a series of holes in the sleeve. Access may be had to the screws K through an aperture A2 in the lock casing, to alter the predetermined setting of members M by alteration of the angular positions of rings F on their sleeves E. Access to casing A can only be had from inside the drawer, door, &c. to which the lock is applied. For use on house &c. doors, the inner end of spindle D has an operating knob or handle (not shown) and member G<2> is formed as a spindle rotatable by a handle L (shown dotted) to depress all the springs G simultaneously and release the bolt for operation by the inside knob, without setting members M to the predetermined positions.
Patent GB-899971-A (GB)
Title: Device for supervising the concentration of radio-active substances contained in a medium
IPC: G01T7/04
Filed: 1959-08-26
Abstract: 899,971. Monitoring radio-activity. LANDIS & GYR A.G. Aug. 26, 1959 [Aug. 26, 1958], No. 29188759. Class 40(3). The invention relates to a device for continuously monitoring the concentration of radio-active substances contained in a media comprising a collecting strip 3 for receiving a deposit of the radio-active substances and which is moved at a constant speed past a collecting station 1 (e.g. a suction input aperture for air or liquid or a device employing electro-static deposition or sedimentation), and two radiation detectors, one (not illustrated) arranged in the direction of travel P of the strip at a distance from the collecting station sufficient to allow an adequate decay of the activity of relatively harmless substances having a short half line, and the other, detector II, arranged directly above the collecting station so as to give immediate warning of a high level of radio-activity. According to the invention there is provided at least one further detector III arranged at a distance b from the collecting station less than the length a of the collecting station so as to provide early warning of dangerous long-life activity the concentration of which is such that its presence is masked to detector II by the short-life activity. If desired a further detector may be arranged beyond detector III. The detectors may comprise Geiger or scintillation counters, pairs of detectors connected in an anti-coincident circuit being employed to suppress background activity. The collecting station is rectangular in shape with sides parallel to the direction of movement of strip 3 and the radiation detector 11 arranged directly above has a corresponding shape.
Patent GB-648581-A (GB)
Title: Device for repairing pipes
IPC: F16L55/17
Filed: 1948-11-10
Abstract: 648,581. Stopping leaks in pipes. CHEETHAM, E. Nov. 10, 1948, No. 29194. [Class 99 (ii)] A device for repairing a burst pipe c comprises a curved metal plate a having an internal coating or sheet d of sealing or packing material, the plate being secured on the pipe by a clip e passing under loops b and tightened by a worm drive. The sheet d may be of rubber or asbestos.
Patent GB-758077-A (GB)
Title: Improvements relating to energisable electric batteries
IPC: H01M6/46
Filed: 1954-10-11
Abstract: 758,077. Batteries. COMPAGNIE INDUSTRIELLE DES PILES ELECTRIQUES CIPEL. Oct. 11, 1954 [Feb. 3, 1954], No. 29244/54. Class 53. A stack of cells that are energized by immersion in water or electrolyte are bound together by bands or threads of a material that contracts when heated, polyvinyl chloride, for example. The heat may be provided by the chemical action of the cells, for example in cells employing a magnesium anode and a depolarizer of copper chloride, or by the passage of current through the cells or by the introduction into the cells of hot electrolyte. The bands or threads after being wound round the cells are secured by stitching, adhesion or welding by high-frequency current. Specification 755,994 is referred to.
Patent GB-1208548-A (GB)
Title: Solid state chopper for controlling load current
IPC: H02M3/135
Filed: 1969-06-10
Abstract: 1,208,548. Control of D.C. motors. WESTINGHOUSE ELECTRIC CORP. 10 June, 1969 [26 June, 1968], No. 29254/69. Heading H2J. [Also in Division H3] In a chopper circuit 15 supplying a traction motor 4, a turn-off charge is maintained on a commutating capacitor 6 regardless of the duration of the " on " periods of a main thyristor 3. The capacitor is charged initially by triggering thyristor 7. Thyristors 3, 9, are then triggered to energize the motor, the capacitor being discharged and recharged in the reverse direction, and the thyristor 7 being turned-off. When the capacitor is fully charged, thyristor 9 turns off. The charge on the capacitor remains substantially constant during the " on " periods of the thyristor 3 since current leakage through the thyristors 7, 9 is earthed through resistor 17. The charge potential on the capacitor 6 is applied to the thyristor 3, together with the potential of the D.C. source, when the turn-off thyristro 7 is triggered.
Patent GB-1059469-A (GB)
Title: Waterproof material
Inventor: GRANT JACK
IPC: D06N5/00
Filed: 1964-07-17
Abstract: 1,059,469. Coated sheet material. RUBEROID CO. Ltd. July 16, 1965 [July 17, 1964], No. 29261/64. Heading B2E. A waterproof sheet comprises a flexible, impermeable film or sheet of a non-expanded linear polyester resin, a reinforcing layer of glass fibres and a bituminous coating on each of the two major faces of the sheet. The sheet may comprise in succession from one major face of the sheet to the other: a bituminous coating, a flexible impermeable film or sheet of a non-expanded linear saturated polyester resin, a layer of bituminous material, a reinforcing layer of glass fibres and a bituminous coating. The polyester may be polyethylene terephthalate. The sheet may be produced by passing a continuous tissue or mat I of glass fibres through a bath 4 comprising a bituminous composition 5, bringing one face of the bitumencoated glass fibre tissue or mat 1a and a flexible impermeable film or sheet 9 of a non expanded linear saturated polyester resin into contact with one another, coating the composit article by passing it through a bath 8 containing a bituminous composition and passing the coated article through the nip of two rollers 13. The bituminous material may contain a finely divided mineral filler. A granular or finely divided mineral substance may be coated on to the two major faces of the bitumencoated article whilst the bitumen coating is tacky. The mineral substance may be sand, chalk or soapstone or a mixture of such substances. Preferably one surface is coated with powdered soapstone or talc and the other with sand.
Patent GB-336765-A (GB)
Title: Improved synchronising apparatus for television and picture-transmitting purposes
IPC: H04N5/06
Filed: 1929-09-27
Abstract: 336,765. Telehor Akt.-Ges. Aug. 29, 1929, [Convention date]. Television. - In apparatus in which synchronizing impulses are obtained by illuminating the light - sensitive cell with light from an additional source between the scanning of individual picture lines, the additional source illuminates one or more edges of the picture. The edges of the image of a picture projected by a. lens b on to a scanning disc a are illuminated by sources of light, h, i. Screens, e, f may be used to confine the area illuminated by the sources h, i, or this may be attained by the use of lenses, prisms or mirrors. Reflectors k, m may be used to concentrate the light. Light from the sources h, i is thus thrown into the lightcell c between the scanning of each picture line and the synchronizing impulses are maintained even when no picture is being transmitted.
Patent GB-1390365-A (GB)
Title: Abrasive tools
IPC: B24D5/02
Filed: 1971-06-22
Abstract: 1390365 Abrasive tools TECHNICAL DENTAL DEVELOPMENTS (LONDON) Ltd 16 June 1972 [22 June 1971 14 Oct 1971] 29308/71 and 47937/71 Heading B3D [Also in Division C4] An abrasive tool, e.g. for dental use, comprises a mass of abrasive particles bonded in an agent 2 to form a coherent body, the bonding agent having a lower thermal conductivity and melting point then the particles whereby when an abrasive particle at the surface of the body wears down during use of the tool and produces greater frictional heat, the heat transfer to the adjacent bonding agent causes the latter to soften and/or disintegrate and release the particle. The bonding agent may be a self-curing polyester resin made from esterification of saturated dibasic acid, such as phthalic anhydride, and an unsaturated acid, such as maleic anhydride, and a glycol, such as propylene glycol dissolved in styrene monomer and polymerized with an organic peroxide, such as benzoyl peroxide, and initiator, such as dimethyl aniline. The agent and particles, such as diamond dust, aluminium oxide or silica carbide of 100 mesh size, are moulded on to a shaft 6, Fig. 3. In another embodiment, the tool is detachably mounted on a shaft 9, Fig. 4, the shaft having a half-section removed from an end portion 8 so as to have an axial flat 10, the tool being moulded with a complementary hole 11 with recesses 12 at each end whereby the tool may be reversed on the shaft when one end of the tool has been worn. During use of the tool, when a particle is released from the tool, the bonding agent has a polishing effect until a new particle is exposed.
Patent GB-840151-A (GB)
Title: A multiple centralized telegraph transmitting device
IPC: H04L25/42
Filed: 1958-09-12
Abstract: 840,151. Printing-telegraph transmitters. SOC. SINTELCO. Sept. 12, 1958 [Sept. 12, 1957], No. 29316/58. Class 40 (3). Start-stop telegraph signals set up on two transmitter devices 2, 2<SP>1</SP> are simultaneously passed to respective outgoing lines 7, 7<SP>1</SP>, by a single distributer arrangement comprising five cams closing five pairs of contacts 1a and 1b ... li and 1l, the contacts of a pair being closed simultaneously, and the interval between the closures of the contact pairs being 20 m.secs. Start contacts In are closed 20 m.secs. before the contact pair 1a, 1b and a sixth cam closes contacts 1m at 120 m.secs. after the closure of contacts In to inaugurate the stop element. The cams of the distributer are on a constantly rotating shaft which completes one revolution in 150 m.secs. The signals to be transmitted to the lines 7, 7<SP>1</SP> are selectively set up on the contacts 2a . . . 2e of the transmitter devices 2 and 2<SP>1</SP>, and control pulses to commence transmission passed over the inputs 6, 61 and operate associated relays 8 when the cam which operates contacts 1m subsequently closes contacts 1p in the interval between 120 m.secs. and 150 m.secs. measured from the closure of contacts In which connect negative polarity for the start element to the windings 4l of the transmitter relays 4, 4<SP>1</SP>, to operate the contacts 4c, 4<SP>1</SP>c, to pass the start element to each of the lines 7, 7<SP>1</SP>. On the simultaneous closure of the contacts 1a, 1b a positive pulse will be sent via contacts 8a of relay 8 to winding 4a of relay 4 if the contact 2a is in the left-hand position, and via contact 8b and winding 4b of relay 4 if the contact 2a of the transmitter 2 is in the right-handl position. The closure of contacts 1a, 1b wil simultaneously and independently operate relay 41 to send to the line 7<SP>1</SP> the code element set up on the contact 2a of the transmitter device 2<SP>1</SP>. Rectifier devices 9a, 9b, and 9a<SP>1</SP>, 9b<SP>1</SP> are included in the transmitters 2, 2<SP>1</SP> to prevent interaction between the pulses produced from the separate transmitters 2, 2<SP>1</SP> when the pairs of contacts 1a and 1b 1c and 1d . . . 1i and 1l are simultaneously closed. The relay 8 when operated locks up over its grounded contact 8c and the transmitter devices 2, 2<SP>1</SP> are arranged to be operated to apply the successive code combinations to position the contacts 2a . . . 2e during the period between the beginning of the stop element and the end of the immediately following start element.
Patent GB-678125-A (GB)
Title: Novel isothiocyanates and process for the manufacture thereof
IPC: C07C331/28
Filed: 1950-12-01
Abstract: The invention comprises compounds of the formula <FORM:0678125/IV (b)/1> where R is a saturated or unsaturated aliphatic radical of 3-4 carbon atoms, other than allyl for which see Specifications 673,346 and 673,798.  These compounds are made from m-aminophenol by converting the amino group into an isothiocyanate group by known methods and alkylating the hydroxy group, these steps being carried out in either order.  The amino group is preferably acylated before the alkylation step, the acylamino group being hydrolysed before conversion into the isothiocyanate group.  The hydroxyl group is converted into its alkali salt before alkylation, or else an acid-binding agent is used.  Suitable alkylating agents are propyl, isopropyl, butyl, isobutyl, butenyl, methallyl and propinyl halides. The isothiocyanate group may be formed as follows: (1) m - aminophenol or m - alkoxyaniline is reacted with carbon disulphide and a base to give m-hydroxy- or alkoxy-phenyl dithiocarbamate, which yields the isothiocyanate by treatment with phosgene; (2) m-aminophenol or m-alkoxyaniline is reacted with thiophosgene in water or other inert solvent; (3) m-alkoxyphenyl dithiocarbamate prepared as above is reacted with chloroformic ester and the condensation product decomposed by heat.  Examples show the production of (1) m-(b -methylallyloxy) - phenyl isothiocyanate via m-hydroxyphenyl isothiocyanate; (2) m-butyloxyphenyl isothiocyanate via the hydroxy compound, obtained through ammonium m-hydroxyphenyl dithiocarbamate; (3) m-propyloxyphenyl isothiocyanate from the dithiocarbamate (from m-propyloxyaniline) and ethyl chloroformate; (4) m-isopropyloxyphenyl isothiocyanate from m-isopropyloxyaniline; (5) m - butyloxyphenyl isothiocyanate from m-butyloxyaniline via the dithiocarbamate.  In a further example, m-acetylaminophenol is converted successively into m-(b -methylallyloxy) - acetanilide, m - (b  - methylallyloxy)-aniline and m-(b -methylallyloxy)-phenyl isothiocyanate.
Patent GB-1419487-A (GB)
Title: Friction clutches
IPC: F16D13/50
Filed: 1974-07-03
Abstract: 1419487 Clutch-brake combinations; friction clutches LIPE-ROLLWAY CORP 3 July 1974 29497/74 Headings F2C and F2L In a clutch-brake combination for a motor vehicle wherein a driven hub 14 carries friction discs 15, 16 which are normally clamped between a driving flywheel 30, intermediate disc 36 and presser plate 38 by springs 44 and are disengaged by radial release levers 48, the assembly is housed within a liquid-tight casing 32, 34 and the hub 14 carries a friction surface 23 which is engaged by an axially slidable non-rotatable brake disc 20 during clutch disengagement. The brake disc 20 is fast with a sleeve 18 which slides on the outer surface of the hub 14 and is moved axially by the housing 24 of a clutch release bearing when the latter effects clutch disengagement. The clutch release bearing 70 acts through wear adjusting screws 66 and plungers 64 on the inner end 58 of the radial release levers 48. During clutch engagement the plungers 64 are held in contact with the inner ends of the release levers by springs 62.
Patent GB-1102230-A (GB)
Title: Method and means for the pneumatic conveying of bulky material in ducts
IPC: B65G53/52
Filed: 1965-07-12
Abstract: 1,102,230. Pneumatic conveying apparatus. K. I. HURTIG. 12 July, 1965 [14 July, 1964], No. 29503/65. Heading B8A. A pneumatic conveying system for bulky material comprises a duct 2 having an intake station 1 and a delivery station 19, and pneumatically operated shut-off valves 5, 9, 16, arranged along the duct 2 to divide the same into a series of compartments A, B, C, D. Valves 6, 11, 15 are provided for controlling the supply of compressed air for conveying purposes to the said compartments and a pressure transducer 3, 8, 13, 18 in each compartment is provided for operating the shut-off valve at the entry to a compartment and the air supply valve for that compartment, the transducer being controlled by the air pressure in the preceding compartment. Material flows through the duct 2 in the direction M until the pressure in compartment A exceeds that at which the transducer 3 is set whence a signal is passed to solenoid-operated valves 4, 6 in branch air lines 23, 24 and shut-off valve 5 is closed and air is admitted to fluidizing cells 7 in the succeeding compartment B. Once the pressure in compartment B exceeds the setting on transducer 8, signals are passed therefrom, causing the shut-off valve 9 to close, air to be fed to the cells 12, shut-off valve 5 to be opened and air to be shut off from the fluidizing cells 7. A like operation is set off between compartments along the whole length of the duct. Reducing valves 20, 21, 22 are set in the air lines to the fluidizing cells so that the fed air pressure can be matched with that of the transducer settings.
Patent GB-1217277-A (GB)
Title: Improvements in or relating to timekeeping systems with a radioactive timekeeping standard
Inventor: KOEHLER DALE ROLAND
IPC: G04C10/02
Filed: 1968-06-20
Abstract: 1,217,277. Utilizing energy of radiations. D. R. KOEHLER, and J. T. GRISSOM. 20 June, 1968, No. 29556/68. Heading G6P. In a radioactive time standard, the radioactive mass 14 is mounted on the face of the solid state detector 15, the output of which is applied through the amplifier and sealer, 11 and 12, to the register 13. Plutonium 242, uranium 233, peptonium 237 or protactinium 231 may be used for 14 and the detector may be of the diffused junction or transistor counter type. To compensate for the continuous nature of the beta particle spectrum, the sealer operates only at energies above a predetermined level. In a modification, a scintillator is interposed between the radioactive material and the detector. The radioactive source may be dissolved in a liquid scintillator or dispersed in plastic or a crystal scintillator.