baber/WOPTO huggingface dataset:
Patent GB-1315315-A (GB)
Title: Vacuum cleaner
IPC: A47L9/00
Filed: 1970-05-11
Abstract: 1315315 Suction cleaners PROCTOR-SILEX INC 11 May 1970 [22 May 1969(2)] 22679/70 Heading A4F A suction cleaner has at least four releasably inter-connected components, including a power supply cable, so arranged that the cable must first be electrically disconnected from one of the other components before these can be disassembled. In the illustrated embodiment a fan and motor unit 2 is detachably mounted with its suction inlet 82 in alignment with an opening 37 in a partition 12 in a lower casing component 1 of the cleaner, by manually releasable quarter-turn fusteres 43. A dust collecting chamber 104 is releasably mounted in communication with the opening 37 and is secured to the casing component 1 by a pivoted latching member 44. A cord reel assembly 3 is releasably attached to the partition 12 by the engagement of tabs 48 thereon in openings 39 in the partition 12. The assembly 3 comprises a terminal box 58 connected to the cord 51 and by a lead 61a to a plug 61 fitting in a socket connected to the fan motor. A terminal box 201, Fig. 3, connected to a foot operated switch 154 has terminal pins201a which are engaged in a plug in the terminal box 58 to complete the electric circuit between the motor and the switch 154 when a latching bar 190 carrying the box 201 is moved to fasten an upper casing component 7 to an intermediate casing component 6, which is releasably fastened to the component by the engagement of tabs 141 thereon with flanges 18 on the component 1. Thus the electrical disconnection of the component 7 from the power supply cord component 3 is an essential prerequisite for the disassembly of the other components.
Patent GB-295836-A (GB)
Title: Improvements relating to reversing absorption refrigerating apparatus
IPC: F25B35/00
Filed: 1927-08-31
Abstract: 295,836. Boving, J. O. Aug. 31 1927. Thermally-actuated valves. - The air-release valve l of an air pressure lamp b employed for heating a generator a of an absorption refrigerating system is automatically opened to stop the heating period by a trip gear released by a fusible plug e in a pocket d. The gear may be the same as that described ir. Specification 271,958, [Class 29, Cooling &c.], comprising a rod f supported by a spring beneath a collar g, which is normlly held down by a spring arm i on a shaft j. When the plug fuses the arm i wipes past the collar g, and it or another arm on the same shaft engages the spindle l<1> of the air-release valve. The valve may be located as shown at the end of a pipe b' connected to the lamp reservoir, or may be on the reservoir and be actuated through linkwork.
Patent GB-900310-A (GB)
Title: Electroluminescent device
IPC: H05B33/14
Filed: 1958-07-16
Abstract: 900,310. Electroluminescence. SYLVANIA ELECTRIC PRODUCTS Inc. July 16, 1958 [July 16, 1957], No. 22893/58. Drawings to Specification. Class 39 (1). The voltage gradient across an electroluminescent cell is so related to the mean size of the phosphor particles as to give maximum luminescence. Examples are given of tests, carried out on suspensions of zinc sulphide activated by copper, chlorine, and lead, suspended in castor oil with mean particle size varying from 2-40 microns and voltage gradients of 12,000-200,000 volts/cm., the applied field having a frequency of 6000 c.p.s. Specifications 746,502 and 900,311 are referred to.
Patent GB-421457-A (GB)
Title: Improvements in rotary pressure devices and packing for the same
IPC: F01C19/02
Filed: 1934-08-08
Abstract: 421,457. Rotary pumps. GULF RESEARCH & DEVELOPMENT CORPORATION, Gulf Building, 7th Avenue, Pittsburg, U.S.A. Aug. 8, 1934, No. 22956. Convention date, Jan. 11. [Class 110 (ii)] In a rotary pump of the type in which meshing rotors have n and n + 1 lobes, a metallic packing strip 9 bears on the periphery of the rotor 4 in the neighbourhood of the outlet chamber 8, and means are supplied to reduce the pressure on the back of the strip 9 to below that existing in the outlet chamber 8. In one form a rubber filling 10 fits over the strip in the recesses provided in the casing 1. The area of the edge 13 of this filling, which is exposed to the delivery pressure, is less than the area of the back of the strip 9. A slot may be cut into the filling 13 extending part of the way across the strip 9. In another form a U-shaped metallic diaphragm is attached by brazing, or otherwise, to the casing and to the back of the strip 9. A further modification describes a flat, bent, metal strip which is attached to the casing and also bears upon part of the back of the strip. The strip may be made of nitrided steel, babbitt-faced steel, or a combination of graphite and brass. The invention is stated to be applicable to centrifugal pumps, turbines and hydraulic motors.
Patent GB-580591-A (GB)
Title: Improvements in spraying mixtures containing silver
IPC: H01G4/008
Filed: 1944-11-20
Abstract: A spraying mixture for use in coating non-metallic materials, particularly mica, with silver comprises a mixture of silver carbonate or other stable silver compound or silver powder, a low fusing flux and a dispersing agent suspended in a dilute solution of a cellulose ether or ester in a stable high-boiling organic solvent and a hydrocarbon or chlorinated hydrocarbon diluent. The composition may be used for coating mica for the production of electric condenser plates.  After the mixture has been sprayed on to the mica, the latter is fired at 450 DEG  to 600 DEG  C. to reduce the silver compound to metallic silver and cause it to adhere to the mica. Cellulose nitrate may be used as the cellulose derivative and the high-boiling solvent may be amyl or butyl lactate.  The diluent may be xylene or carbon tetrachloride.  An addition of up to 10 per cent of a low fusing lead borosilicate flux, based on the weight of silver or silver compound may be made to improve the adhesion of the fired silver film and the material.  Where a low power factor is desired, a flux having the composition: PbO from 40-55, B2O3 from 20 to 60, and SiO2 from 1 to 30 gram molecules per cent, is preferably used.  As dispersing agent, Bentonite or Vallender clay may be present.  In an example, the composition is sprayed at 65 DEG  C. on to a mica plate through a stencil.  The film of silver carbonate so formed is dried and then fired at 450-550 DEG  C. to give a silver film coating.ALSO:A spraying mixture for coating non-metallic materials, particularly mica, with silver comprises a mixture of silver carbonate or other stable silver compound or silver powder, a low-fusing flux, and a dispersing agent such as bentonite or Vallender clay, suspended in a dilute solution of a cellulose ether or ester in a stable high-boiling organic solvent and a hydrocarbon or chlorinated hydrocarbon diluent.  After the mixture has been sprayed on to the mica or other surface, the coating is fired at 450 DEG  to 600 DEG  C. to reduce the silver compound to metallic silver and cause it to adhere to the mica.  The flux may be a lead borosilicate.  Where a low power factor is desired as in the case of an electric condenser, a flux may be used having the composition:-PbO from 40 to 55, B2O3 from 20 to 60, and SiO2 from 1 to 30 gram molecules per cent.  In an example, the composition is sprayed at 65 DEG C. on to a mica plate through a stencil.  The film of silver carbonate so formed is dried and then fired at 450 DEG -550 DEG C. to give a silver film coating.
Patent GB-230164-A (GB)
Abstract: 230,164. Budge, H. S., and Knowlson, H. Dec. 4, 1923. Rotary distributors.-A loose eccentric contact ring is rotated within an annular distributor contact raceway by a rotating outwardly spring- pressed roller bearing on the inside of the ring. As shown in Figs. 1 and 2 a roller 10 carried by an arm 103 pivoted in a bracket 101 secured to the shaft 11 is pressed outwardly by a plate spring 106 and bears on the inner surface of a loose contact ring 12 so arranged that during rotation of the brush the outer surface of the ring engages successively fixed distributor contacts 81 - - 84 mounted in the insulating raceway 7. The ring 12 has an annular flange 121 at one end which by bearing between the rotating roller and a plate spring 13 prevents axial displacement of the contact ring 12.
Patent GB-728123-A (GB)
Title: Improvements in and relating to multiple axle drives of motor road vehicles
Inventor: WATTS LAURENCE DEREK
IPC: B60K17/36
Filed: 1950-09-20
Abstract: 728,123. Vehicle driving gear. SCAMMELL LORRIES, Ltd. Sept. 19, 1951 [Sept. 20, 1950], No. 23070/50. Classes 79(2) and 79(4). [Also in Group XXXII] In a motor vehicle having a pair of axles arranged one in front of the other the drive is transmitted to the axles through separate propeller shafts from a transposing gear box, universal joints are fitted to the ends of the propeller shafts and each axle is located by a torque member, one end of which is secured to the axle casing and the other end of which is pivoted to the vehicle frame midway between the universal joints of the appropriate propeller shaft, whereby the angles of the universal joints remain substantially equal at all times irrespective of the vertical movements of the axles. As shown a shaft 3 driven through the usual change-speed gear box 2 drives the transposing gear box 4, which may provide a two speed gear. The gear box 4 drives the rear driven axle through a two-part propeller shaft 5, 5a and drives the front driven axle through the propeller shaft 6, the axles being of the solid beam type and driven by bevel gears. The shaft parts 5, 5a are provided with universal joints 12, 13, 14, the middle one being supported in a housing 15 secured to a transverse frame member. The axles are secured in the fore and aft direction by torque arms 18 of triangular shape, the arms being bolted to the axle casings 9, 10 and having a ball-jointed connection with transverse frame nembers. The axles are mounted on the ends of leaf springs 29 (see Group XXXII) pivoted to the frame, the axles being located in the transverse direction by ball-jointed connections with panhard rods 23 similarly connected to the frame.
Patent GB-1309022-A (GB)
Title: Heating system
IPC: B29C35/00
Filed: 1971-04-19
Abstract: 1309022 Moulding tyres AMERICAN HYDROTHERM CORP 19 April 1971 [2 March 1970] 23091/71 Heading B5A [Also in Division F4] A tyre vulcanization press or similar equipment 15 is heated by high pressure liquid, e.g. water, from a storage and heating vessel 10 having a degasifying section 11, which liquid is passed through a conduit 16 including a pump 17 to the equipment which has an outlet connected by a conduit 19 to a gas-liquid separator 18. The separator has a conduit 22 with a flow restrictor 23 passing the liquid to the suction side of the conduit 16, and a further conduit 13 with a flow control valve 21 connected to the degasifying section 11. The proportions of liquid flow through the conduits 13, 22 are responsive to the temperature of the liquid supplied to the equipment as sensed by a temperature controller 24 which controls the valve 21 to increase or decrease the flow of liquid returning to the vessel 10 which flow displaces a corresponding amount of heated liquid to flow to the equipment. Make-up liquid is supplied to the vessel through a conduit 12, the liquid in the vessel is heated by high pressure steam, and an internal storage vessel communicating with the degasifier may be mounted within the vessel 10. Several presses or the like may be supplied simultaneously and flows at different temperatures to cure the rubber or like products may be obtained in alternative embodiments. The liquid may be supplied from the vessel 10 directly to the equipment for initially filling the presses and a conduit directly returns such liquid to the degasifier.
Patent GB-1182313-A (GB)
Title: An Electromagnetic Operating Device
IPC: H01H51/22
Filed: 1967-05-18
Abstract: 1,182,313. Electromagnetic switches. MITSUBISHI DENKI K.K. 18 May, 1967 [18 May, 1966], No. 23173/67. Heading H1N. A bi-stable electromagnet, which may be a current interrupter, has two coils 24, 26 each surrounding a respective remanent magnet 12, 14. The armature 16 which may control contacts 20, 22 is movable between the magnets 12, 14 as the coils 24, 26 are simultaneously energized to magnetize one remanent magnet and demagnetize the other and vice versa. Since the demagnetizing pulse must be less than the magnetizing pulse each coil is in series with a current limiting network (32) comprising a resistor and diode (Fig. 2, not shown) in a circuit providing capacitors charged to opposite polarities to provide the pulses for movement of the armature 16 in opposite directions.
Patent GB-856205-A (GB)
Title: Automatically lubricant-sealed gate valves
IPC: F16K3/36
Filed: 1957-07-22
Abstract: 856,205. Force-feed lubricating. VOLPIN, A. S. July 22,1957 [Feb. 7,1957],no. 23178/57. Class 12 (3). [Also in Group XXIX] In a lubricant sealed gate-valve, Fig. 1, having a closure member of two parts 17, 17 spring-urged apart between seats 15, 16 under the control of hand wheel 23 and screwed spindle 21, each seat has an annular groove 24 which communicates with axially-spaced points of the lubricant reservoir 36, Fig. 2, on either side of a piston 47 via passages 26, 28, 31a, 45 or 26, 28, 30, 46 when the valve is closed; the recesses 26 in the gate members moving out of communication when the valve is opened. The downstream or low-pressure end of the reservoir, at least, is charged with lubricant through an appropriate connection 35 or 35a and passages 31 or 31a, so that when the valve is closed the upstream or high pressure displaces the upstream part 17 of the gate against its springs and via passages 28, 30, 46 or 28, 30, 31a, 45 acts on and displaces the piston 47, which in turn forces lubricant into the groove 24 of the downstream valve seat to form a seal. To quicken the automatic sealing action the pressure-drop across the valve seat may be increased by providing a leak, e.g. by slightly off-setting the inner annular part 50 of the seat. A detachable valve seat for fitting into a counterbore in the casing is also described. Specifications 651,474, 700,848, 718,324 and 719,001 are referred to.
Patent GB-1041696-A (GB)
Title: Manufacture of benzo[a]quinolizines
IPC: C07D455/06
Filed: 1964-06-05
Abstract: The invention comprises (1) compounds of formula <FORM:1041696/C2/1> in which R is an alkyl group having 1-4 carbon atoms, R1, R2, R3 and R4 represent methoxy or ethoxy group, and Ra is present and represents an alkenyl group having 2-7 carbon atoms, and (2) the preparation of compounds of the formula given above in which R, R1, R2, R3, R4 are as defined above, and R is an aralkyl group in which the alkyl portion has 1-4 carbon atoms, an alkyl group having 1-7 carbon atoms or an alkenyl group having 2-7 carbon atoms, and in which the broken line denotes that the substituents attached thereby are optional, and acid addition salts thereof, which comprises condensing a 6,7-dihydro-benzo[a]quinolizinium salt having a cation of formula <FORM:1041696/C2/2> with a 3,4-dihydroisoquinolinium salt having a cation of formula <FORM:1041696/C2/3> to give a tetrahydroisoquinolinyl-methyl -dihydrobenzo[a]quinolizinium salt and either first hydrogenating the heterocyclic aromatic ring of this compound and then dearalkylating or reducing, if desired, the hydrogenated product to remove any N-aralkyl group or reduce any N-alkenyl group to an N-alkyl group, or first carrying out the dearalkylation or reduction and then hydrogenating the dearalkylation or reduction product, and in either case if desired converting the product to an acid addition salt. The reaction between the benzo[a]quinolizinium salts and isoquinolinium salts of Formulae II and III is preferably carried out in a basic medium at a temperature within the approximate range of - 10 DEG  C. to + 70 DEG  C. The hydrogenation of the aromatic heterocyclic ring of the condensation product is conveniently effected using a metal hydride in an aqueous or alkanolic solution.  The dearalkylation of any N-aralkyl condensation product or the reduction of any N-alkenyl condensation product can conveniently be effected by catalytic hydrogenation.
Patent GB-246755-A (GB)
Title: Improvements in a current motor
IPC: F03B17/06
Filed: 1925-09-18
Abstract: 246,755. Tydings, J. Sept. 18, 1925. Current motors.-A paddle wheel 10 mounted between parallel walls is driven by water from a weir having converging walls 2, 3 and a protective grating 11, the wall 3 having an overflow 6. The wheel 10 drives through worm-gear 15, 16 machinery mounted on a platform 14 supported on the walls of the weir.
Patent GB-930385-A (GB)
Title: Method for the preparation of 2, 2-dinitro-1, 3-propanediol and 2, 2-dimethyl-5, 5-dinitro-1, 3-dioxane
Inventor: KLAGER KARL
IPC: C07C205/15
Filed: 1960-07-04
Abstract: 2,2-Dinitro-1,3-propanediol is prepared by reacting 2,2- dimethyl- 5- hydroxymethyl- 5-nitro-1,3-dioxane with an alkali or alkaline earth metal hydroxide (preferably in the presence of ammonium hydroxide) to form the corresponding metal nitronate salt, subsequently reacting said salt with an alkali or alkaline earth metal nitrite in the presence of silver nitrate to yield 2,2-dimethyl-5,5-dinitro-1,3-dioxane and finally subjecting the latter compound to acid hydrolysis.
Patent GB-944089-A (GB)
Title: Polymerisation of vinyl-tertiary-butyl ether
IPC: C08F16/12
Filed: 1962-06-18
Abstract: Stereoregular isotactic vinyl tert. butylether polymers which are crystalline under X-ray examination are made by polymerizing the monomeric ether in the presence of a boron compound of the general formula BF2R, wherein R is an alkyl, aryl, or alkoxy radical. The polymerization temperature is preferably -30 to -80 DEG C., and the reaction is preferably effected in an inert hydrocarbon diluent such as toluene, pentane, liquified propylene, and mixtures. Specified catalysts are mono-n-propyl, mono-ethyl, mono-isopropyl, mono-n-butyl and mono-n-amyl boron difluoride, monophenyl boron difluoride, boron monoethylate difluoride, boron mono-isobutylate difluoride, and boron mono-n-butylate difluoride.
Patent GB-583736-A (GB)
Title: Improvements in coin-freed door locks
IPC: G07F17/14
Filed: 1944-11-24
Abstract: 583,736. Coin-freed door locks. NEWMAN & SONS, Ltd., W., and SHEAD, H. C. Nov. 24, 1944, No. 23432. [Class 27] Coin-slit closing-devices; indicators.-A coinslot closing member operable by the inside handle of a lavatory door lock, comprises a block 36 with a coin passage 37 mounted to slide upwardly and rearwardly between inclined guides 40 and a sloping upper portion 3 of the front casing. In the particular construction shown, the block also serves as an indicator, the passage 37 normally (Fig. 1) registering with the coin slot 2 to permit insertion of a coin for operating the lock, and "vacant" on the front of the block registering with a slight aperture 4 in the casing. The block has a cam slot 42, Fig. 6, engaged by a pin 41 on an arm 29 fast with the engaged by a pin 41 on an arm 29 fast with the inside handle 34. On turning the handle clockwise from its normal position, the pin 41 travels over the right-hand part of the cam slot, and raises the block up the inclined guides to bring the coin passage 37 out of register with the slot 2 which is thus blocked against the insertion of a further coin so that the lock cannot be opened from outside. "Engaged" is then displayed through the sight aperture 4. To unlock the door from the inside the handle is turned anti-clockwise from its normal position, the arm 29 engaging a shoulder 35 on the lock bolt 19 and retracting it against a spring, whilst the pin 41 travels idly in the left-hand part of the cam slot 42. Coin action mechanical-connection ; coin-discharging mechanism.-The lock is opened from the outside by means of a slide 5 with an external finger-piece 6, the inserted coin being received between abutments 24 and 23 on the slide and bolt and coupling them together. The momentary retraction of the bolt on closing the door withdraws the abutment 23 and releases the coin to the till. The lock may also be operated from outside by means of a key inserted through a keyhole 47 to engage a pin 46 on the boss of the lever 29. Specification 498,547 is referred to.
Patent GB-155060-A (GB)
Title: Rotary tray for use in public bars, restaurants and hotels
IPC: B67D1/06
Filed: 1919-09-25
Abstract: 155,060. Dawe, E. L. Sept. 25, 1919. Dispensing liquids.-A tray for use in bars, restaurants, and hotels is provided with castors c, and with a depending handle d by which it may be revolubly supported in a stand f to facilitate the filling of glasses A from a tap l. The handle and stand are hollow to allow spilt liquid to drain to a waste trough h, a spring-controlled valve m being automatically opened when the tray handle is inserted in the stand.
Patent GB-720438-A (GB)
Title: Improvements relating to curtain suspension devices
Inventor: HANKIN ROBERT WILLIAM
IPC: A47H1/142
Filed: 1952-09-20
Abstract: 720,438. Suspending curtains. HANKIN, R. W., and OSBORNE, H. G. Sept. 23, 1953 [Sept. 20, 1952], No. 23638/52. Class 52 (5). A valance rail bracket 10 is provided with rearwardly-extending arms 104 formed with end portions 105 of reduced dimension and of substantially T-shape in cross-section to engage in grooves 121 provided in a curtain rail supporting bracket 12. The valance bracket is provided with projections 107 which engage in a groove 131 in the head of the curtain rail 13. Rounded portions 106 on upstanding jaw portions 101 at the end of the valance bracket engage shoulders 112 provided on the valance rail 11. The rails and brackets may be formed of synthetic plastic materials. In a modified construction for use with T- or L- shaped curtain rails the projections 107 are replaced by a jawed section which embraces the head of the web of the curtain rail. Specifications 715,118 and 715,150 are referred to.
Patent GB-955282-A (GB)
Title: Improvements in or relating to derivatives of 4-oxo-2,3-dihydro (benzo-1,3-oxazine)
Inventor: TEOTINO UBERTO MARIA
Filed: 1961-06-30
Abstract: The invention comprises (a) compounds of the general formula (I) <FORM:0955282/C2/1> (wherein R is an alkyl, aralkyl or aryl group and n is 1 or 2) and their preparation by reacting salicylamide with a thioether-aldehyde of the general formula RS(CH2)n CHO or thioetheracetal of the general formula RS(CH2)nCH (OAlkyl)2 in a non-polar solvent at a temperature within the range of 30 DEG  to 70 DEG C. while bubbling a stream of a hydrogen halide through the solvent; (b) compounds of the general formula: <FORM:0955282/C2/2> and their preparation by (i) reacting a compound of formula (I) with an active oxygen-yielding compound in an alcoholic solvent at a temperature within the range of 20 DEG  to 100 DEG C., or (ii) reacting salicylamide with a sulphoxide-acetal of the general formula: <FORM:0955282/C2/3> in a non-polar solvent at a temperature within the range of 30 DEG  to 70 DEG C. while bubbling a stream of a hydrogen halide through the solvent; and (c) compounds of the general formula: <FORM:0955282/C2/4> and their preparation by (i) reacting a compound of formula (I) with an active oxygen-yielding compound in acetic acid and in the presence of acetic anhydride at a temperature within the range of 20 DEG  to 100 DEG C., or (ii) reacting salicylamide with a sulphone-acetal of the general formula: <FORM:0955282/C2/5> in a non-polar solvent at a temperature within the range of 30 DEG  to 70 DEG C. while bubbling a stream of a hydrogen halide through the solvent.  b -Phenylsulphoxypropionaldehyde diethyl acetal is prepared by oxidising b -phenylthiopropionaldehyde diethyl acetal with aqueous hydrogen peroxide in ethanol.