baber/WOPTO huggingface dataset:
Patent GB-650885-A (GB)
Title: Improvements in domestic heating and ventilating systems
Inventor: HAGLEY JOHN HERBERT
IPC: F24H3/06
Filed: 1947-12-18
Abstract: 650,885. Heating air hot-water boilers. THERMOJOY, Ltd. Dec. 18,1947, No. 33467. Addition to 588,625. [Classes 64(i) and 64(iii)] [Also in Group XI] In the domestic heating and ventilating system of the parent Specification, the air flowing through the air space of the heat exchanger travels upwards over part of the heating surface and then downwards over another part of that surface to an outlet at or near the bottom of the space. The air space, which is formed between a cylindrical outer wall 64 and the heating wall 57, which is of rectangular cross-section, is divided by a pair of vertical partitions 74 into two parts intercommunicating at the top, the inlet 50 from a fan 28 being at the bottom of one part, and the outlet 63 near the bottom of the other. The heating wall 57, which is of rectangular cross-section, has external sinuous fins 60, 61 and internal horizontal fins 56, 58 which rest on fins 59, 55 on the cylindrical byepass flue 54. The combustion chamber, formed by an openended box-like casting 8, is surrounded on three sides by a boiler 2. An apertured hollow cylindrical valve 10, rotatable in an apertured housing 9, controls the flow of hot gases to the boiler 2 and to the byepass flue 54 and the heating flue 57. The supply of air from the fan for combustion through the pipe 31 is controlled by a valve 34 which is closed by rotation of an arm 36 to allow the fire door to be opened (see Group XI). A gas burner 20 is provided for temporary alternative use. According to the Provisional Specification the air space in the heat-exchanger surrounds the flue on three sides only and is separated therefrom by a corrugated wall, the byepass flue has double walls enclosing an air space for heat insulation, and the damper 10 is replaced by a pair of horizontal slidable dampers arranged one above the other in a short vertical flue divided into two by a vertical baffle.
Patent GB-762112-A (GB)
Title: Improvements in or relating to variable resistors
Inventor: BELL HAROLD BENSON LESLIE GORD
IPC: H01C10/32
Filed: 1953-12-02
Abstract: 762,112. Variable resistors. BRITISH INSULATED CALLENDER'S CABLES, Ltd. Dec. 1, 1954 [Dec. 2, 1953], No. 33485/53. Class 37. In a variable resistor comprising a discshaped rotor carrying a conducting ribbon on its periphery and two fixed contact members making contact with the conducting ribbon at angularly spaced points with respect to the rotor, each contact member comprises a metal ribbon of good conductivity which is so supported at its ends that it is maintained under tension while an intermediate portion thereof makes contact with the rotor, the contacts being so disposed with respect to the rotor that each makes contact therewith over a small arc. The rotor 2 is provided with three grooves 7, 7<SP>1</SP> into which clamping pieces 8, 8<SP>1</SP> are screwed. The conducting ribbon 10 on the periphery of the rotor 2 is in two portions. One portion, clamped between the member 8 and one of the members 8<SP>1</SP> is of high-resistance material, while the other portion which is clamped between the member 8 and the other of the members 8<SP>1</SP> consists of a ribbon of a good conductor, for example, silver. Each contact comprises a ribbon 13 of a good conducting material, for example, silver, supported between a fixed member 14 and a movable member 15 which movable member may be clamped in place by means of clamping screw 18. In order to maintain the contact ribbon 13 under tension, a bow-spring 22 is provided, the end portion of the spring fitting into slots in the support members 14 and 15. As can be seen in Fig. 1, the casing 11 of the variable resistor is cut away to provide room for the springs 22 and to permit access to the support members 14, 15 and clamping screw 18. On account of the constant spacing between the points where the contact member 13 touch the ribbon conductor 10, the variable resistor is of a constant inductance type.
Patent GB-1152474-A (GB)
Title: Process For The Manufacture Of Alkyl Tin Compounds
IPC: C07F7/22
Filed: 1966-07-26
Abstract: 1,152,474. Dialkyl tin-dichloride-organic amine derivatives; dialkyl tin derivatives. SCHERING A.G. 26 July, 1966 [5 Aug., 1965], No. 33503/66. Heading C2J. Dialkyl tin mercaptides or acylates are prepared by dissolving a dialkyl tin halide which may be contaminated with trialkyl tin halide in an inert solvent (a hydrocarbon or an ether) and heating with an amine (which may be primary, secondary or tertiary, aromatic, cycloaliphatic, aliphatic or heterocyclic) to a temperature between 20‹ and 100‹ C. The dialkyl tin amine complex precipitates and is filtered off, any trialkyl tin compound remaining in solution. The dialkyl tin amine complex is then dissolved in an inert solvent, and a mercapto compound (which may be a mercaptan, mercapto alcohol or ester thereof or mercapto acid or ester thereof) or a mono or dicarboxylic acid is added and the mixture heated. The solvent is then extracted under vacuum to leave the required product. In the examples, dialkyl tin dichloride-amine complexes are formed with aniline (I), quinoline (II), pyridine (XVI), propylene diamine (III), ethylene diamine (VII), isophoronediamine (XV) and one of dimethyl, di-n-butyl and di-n-octyl tin dichloride.
Patent GB-1390705-A (GB)
Title: Centrifugal separator
IPC: B01D45/14
Filed: 1973-07-13
Abstract: 1390705 Centrifugal separator BRONSWERK APPARATENBOUW BV 13 July 1973 [13 July 1972] 33601/73 Heading B2P A centrifugal separator for removing solid particles from a gas comprises a housing 1, 4 having an upper wall 3, a tangential inlet channel 2 for the gas to be purified at its upper end and a discharge opening 5 for the removed particles at its lower end; a rotor 6 centrally disposed with respect to the housing and including a gas permeable cage 9 in the housing spaced below the wall 3 thereof and a ventilator blade wheel 14 associated with an outlet channel 16 for the purified gas above the wall 3; means, e.g. a motor, for driving the rotor; guide means, e.g. a helical guiding plate 20, in the housing, associated with the inlet channel 2 and causing incoming gas to flow in a helical path to the zone of the housing interior containing the cage 9 so that gas enters the rotor through the cage and purified gas flows through the rotor to the outlet channel 16; and a cylindrical partition 18 disposed coaxially with the rotor between the upper end of the cage and the upper wall 3 of the housing and having a diameter of at least 1.15 times the outer diameter of the cage. The cage 9 consisting of a plurality of circumferentially spaced rods is closed at its bottom by an end plate 10 and is provided at its top with a ring 11 to which radially extending baffles 12 are attached. The baffles extend through an opening 13 in the upper wall 3 of the housing and are enlarged above this opening to form the ventilator blade wheel 14. In operation a portion of the solid particles is removed by centrifugal force as the gas is deflected in a helical path by the plate 20 and the remainder of the particles is separated as the gas enters the cage 9.
Patent GB-174326-A (GB)
Title: Improvements in and relating to incandescent lamps
IPC: H01K3/02
Filed: 1921-12-14
Abstract: 174,326. British Thomson - Houston Co., Ltd., (General Electric Co.). Jan. 18, 1921, [Convention date]. Void [Published under Sect. 91 of the Act]. Drawings to Specification. Alloys.-Electric lamp filaments are composed of tungsten containing a small percentage of boron, the alloy having a lower vapour pressure than tungsten, a lower temperature coefficient of resistance than tungsten, and at high temperatures a specific resistance substantially equal to that of tungsten. Less than one per cent of boron, or of a decomposable boron compound, for example the nitride, may be aded to tungsten powder, and the mixture pressed, treated, and swaged.
Patent GB-994430-A (GB)
Title: Amplifying circuit including gated demodulator apparatus
IPC: H03F3/387
Filed: 1961-09-20
Abstract: 994,430. Transistor amplifying; switching circuits. ENDEVCO CORPORATION. Sept. 20, 1961 [May 24, 1961], No. 33742/61. Heading H3T. In a chopper type amplifier in which a signal to be amplified is modulated by a chopper modulator, supplied with square waves derived from an alternating electrical wave, amplified and then demodulated by a balanced demodulator, the demodulator is gated into operation for only the duration of each alternation of a rectangular waveform derived from the alternating electrical wave, each alternation of the rectangular waveform having a duration less than the duration of each alternation of the square waveform. As shown in Figs. 1 and 2, sine wave oscillator 2 comprising transistor 24 and feedback windings 22, 26 of transformer 21 feeds both a push-pull gate 7 and a square-wave former 3 comprising two overdriven transistor amplifiers 35, 37 connected in cascade. The square-wave form from transistor 37 is fed via amplifier 43 to transistors 61, 62 forming the chopper 1 to input terminals 65, 67 of which the D.C. signal to be amplified is applied. The modulated output signal from the chopper is amplified by 5 and fed over transformer 71 to demodulator 6 comprising transistors 72, 73 and 74, 75 connected as a voltage doubler. The output from push-pull gate 7 is also impressed on the demodulator such that an output from the latter is only obtained across output terminals 110, 111 when the waveform from amplifier 5 and the waveform from gate 7 arrive at the demodulator at the same time. Push-pull gate 7 comprises transistors 82, 83, 91, 92, transistors 82, 83 having their bases connected to the extremities of winding 32 of transformer 20 in the oscillator circuit and being heavily reverse-biased so that only the peaks of the sine waveform from winding 32 drive the transistors into conduction, with the result that the output pulses applied over transformers 97, 98 to the demodulator have a duration of one-fourth that of the square waveform from the squarer 3, Fig. 3 (not shown). Thus only the central part of the signal waveform from the amplifier 5 is passed through the demodulator and if there are spurious transients at the beginning of each alternation of the waveform of amplifier 5 these transients will not be effective in forming the demodulated output.
Patent GB-1483642-A (GB)
Title: Interlocking track circuits
IPC: B61L1/18
Filed: 1974-07-31
Abstract: 1483642 Track circuits with cab signalling GENERAL SIGNAL CORP 31 July 1974 [7 Sept 1973] 33803/74 Heading B7N In a track circuit and cab signalling arrangement at a cross-over between main lines 15 and 16 the use of A.C. track circuits without insulating joints within the arrangement permits the use of the rails of the main line for cab signalling and traction current return. The arrangement which is within the insulating joints 17, 17<SP>1</SP> and 18, 18<SP>1</SP> online 15 and within joints 19, 19<SP>1</SP> and 20, 20<SP>1</SP> on line 16, includes, associated with line 15, a pair of track circuits having a common bond and receiver 48 responsive to signals at one frequency injected into the first circuit via coil 40 and shorting bar 50 and signals at a second frequency injected into the second circuit via coil 43 and shorting bar 52. These circuits are also provided with cab signalling current using coils 41, 42. A similar arrangement is provided for line 16 and the cross over lines 21, 22 are formed as a single track circuit insulated by joints from the main lines and are provided with track side loops with terminals 1B and 3R for cab signalling purposes. The shorting bars 50-53 are coupled to cross bonds 54-57 to distribute the return traction current evenly between the main line rails.
Patent GB-960882-A (GB)
Title: Apparatus for separating mixed solid materials
Inventor: HILLYAR-RUSS GEOFFREY
IPC: B03B5/42
Filed: 1959-10-06
Abstract: 960,882. Mashing granular materials. COAL INDUSTRY (PATENTS) Ltd. Oct. 6, 1960 [Oct. 6, 1959], No. 33827/59. Heading B2H. A sink and float apparatus comprises a rotary drum 1 rotating about a horizontal axis, an inlet feed shoot 2 at one end of the drum, a float discharge c-d at the other end, and a sinks discharge formed by at least one arcuate passage 9 which extends around at least a part of the drum circumference and communicates at one end with the drum interior and at the other end with the drum exterior, the sinks being discharged by rotation of the drum. The length of the discharge passage is such that at no time during revolution of the drum is the liquid in the drum free to flow unrestrictedly out of the drum. The walls of the drum are formed by two scroll-shaped members 4 and 5 which with the end plates 6 and 7 form curved ducts 8 and 9. Side plates 11 and 12 confine the floats to the centre of the drum and on rotation of the drum (Fig. 4) the sinks are discharged via duct 9 on to screen 13. In a modification the discharge duct extends over only a part of the length of the drum in which case the sinks are directed into the duct by sloping walls of the drum or by helical guides set in the wall of the drum (Figs. 5 and 6, not shown). The drum may also be provided with two or more parts with one or more discharge ducts, the parts being separated by a wall with an aperture coaxial with the drum axis and larger than the feed inlet diameter.
Patent GB-900054-A (GB)
Title: Method for welding cast iron
IPC: B23K35/00
Filed: 1960-10-03
Abstract: An electrode or filler rod for welding cast iron to cast iron or steel has any of the following approximate compositions:- .(1).Nickel.-.-.-.-.95-99% ..Chromium..-.-.-.0.2-1% ..Manganese..-.-.-.0.35-1.5% ..Carbon.-.-.-.-.0.4-0.9% .(2).Nickel.-.-.-.-.48-60% ..Iron.-.-.-.-.40-52% ..Manganese..-.-.-.0.35-1.5% ..Carbon.-.-.-.-.0.4-0.9% ..or..... .(3).Nickel.-.-.-.-.58-65% ..Copper.-.-.-.-.35-42% ..Manganese..-.-.-.0.35-1.5% ..Chromium..-.-.-.0.4-0.9% and may be bare or flux coated.  A suitable coating flux is formed by mixing:- <TABS:0900054/II/1> A further flux composition is in parts by weight: <TABS:0900054/II/2> together with an alkali-metal silicate solution, a wetting agent and an anti-foaming agent.
Patent GB-373558-A (GB)
Title: An improved process for producing white and coloured reserves under aniline black
Filed: 1931-12-07
Abstract: White and coloured reserves under aniline black are produced by printing goods prepared with an aniline black solution with a reserve containing a sparingly volatile, strongly basic organic derivative of ammonia, either alone or in admixture with a suitable vat dyestuff, an alkali carbonate and the reducing agent necessary for fixing the vat dyestuff.  Organic derivatives of ammonia specified are: piperazine, diethylethylenediamine and triethanolamine.  In examples: (1) a white fabric impregnated with a solution of sodium chloride, sodium ferrocyanide and aniline hydrochloride is printed with a reserve consisting of British gum powder, water and triethanolamine, and is then steamed, oxidized, washed and dried, yielding a white effect on a black ground; (2) the reserve contains in addition Ciba Blue 2BD paste, potassium carbonate and sodium formaldehyde sulphoxylate, whereby a blue effect on a black ground is obtained. Specifications 285,041 and 302,252, [both in Class 15 (ii), Dyeing, Processes &c. for], are referred to.
Patent GB-1435081-A (GB)
Title: Hold-open deives
IPC: E05F3/22
Filed: 1972-07-20
Abstract: 1435081 Stay devices; door closers M D BROWN P E BROWN and P E BROWN [trading as J & E BROWN] 24 Aug 1973 [20 July 1972] 34003/72 Headings E2F and E2M A stay device, preferably for use in conjunction with a door closer mechanism 13, comprises a mounting 18 for attachment to a door frame and pivotally linked to a block 29 (by a bolt 17 which engages in bore 30), a stay arm 15 one end portion 20, of which slidably receives the block 29 and which carries an abutment 25, a spring loaded element 36 which biasses portion 20 toward the pivot, and a keeper 24 secured in a fixed position relative to the mounting 18 and having jaws 26, 27 defining an opening into which abutment 25 can latch (against the bias of element 36). The angular position of keeper 24 is adjustable and portion 20 is telescopically adjustable in stay arm 15. The bolt 17 engages in an internally threaded member 33 which can be rotated from below via opening 31.
Patent GB-1347636-A (GB)
Title: Printers having an ink ribbon attachment
IPC: B41J32/02
Filed: 1972-07-20
Abstract: 1347636 Ink ribbon mechanisms SIEMENS AG 20 July 1972 [22 July 1971 30 Sept 1971] 34006/72 Heading B6F An ink ribbon feed arrangement in a printer comprises a cassette 1 receiving folded convolutions of ribbon 2 and associated with drive rollers 3, 4 and a tensioning spring 5 mounted on the printer, the drive rollers engaging the ribbon in use through apertures in the cassette, one of the rollers being pivotable between operative and inoperative positions. The length of ribbon held by the cassette is endless. The cassette may be tilted with respect to the print line for maximum wear of the ribbon.
Patent GB-1444587-A (GB)
Title: Electronically controlled exhaust gas pruifying system
IPC: F01N3/22
Filed: 1973-07-17
Abstract: 1444587 Treating exhaust gases NISSAN MOTOR CO Ltd 17 July 1973 [19 July 1972 (2)] 34036/73 Heading B1W [Also in: Division F1 and F4] A combination of an electronically controlled exhaust gas purifying system and an I.C. engine 1 comprises a thermal reaction 16 upstream of a catalytic converter 10 in the engine exhaust system; an air supply system 12 to supply air to the exhaust system upstream of the thermal reactor 16 and electronic control means to prevent the supply of air when the temperature of either the thermal reactor or the catalytic converter is above a respective predetermined value or when the the engine is being cranked. During cranking the output of a generator 22 driven by the engine is sufficient to energise a relay 23 and a solenoid 35 is energised by battery 29 so that a valve 33 prevents air flow to the exhaust system. When the engine runs at normal speed, the relay 23 connects electronic computing circuit 36 to the battery, the computing circuit giving an output signal S1 to close valve 33 only when one or both of the converter 10 and reactor 16 exceed their respective predetermined temperatures and otherwise allowing air to reach the exhaust system. A signal S2 is emitted by circuit 36 when the reactor 16 falls below the reaction commencement temperature (lower than the previously mentioned predetermined value) to energise relay 51 and thereby connect a second contact break of mechanism 39 having contacts which open after those of contact breaker 38 thereby retarding ignition. This causes the exhaust gases emitted by the engine to be hotter, so raising the temperature of the reactor 16 again. The signal S2 goes by way of an engine temperature responive switch 56 which is closed when the engine temperature is low. The signal S2 is not produced if the rate of temperature rise of the reactor 16 is greater than a preset value, unless the reactor temperature is 'below a predetermined value lower than the reaction commencement temperature.
Patent GB-1114128-A (GB)
Title: The production of dried granular solid chemical products
IPC: B01J8/24
Filed: 1965-08-09
Abstract: Granular products are obtained by injecting the appropriate reactants, at least one of which is liquid, solution, slurry, or paste, in an atomized state upwardly into a circulating fluidized bed of growing granules having its cross-section increasing with height, so that material is deposited on the granules (before, during, or after reaction) and any liquid evaporates, the product granules being removed from the top of the bed to keep it level. The reactants may be introduced separately through concentric nozzles, or may be premixed: gases may be introduced at a velocity greater than that of the fluidizing gas (30-100 m./sec.) or may be mixed with it; and liquids may be injected by means of compressed air. The fluidizing gas may be heated, and is introduced at such a rate that the granules are projected upwards in the central zone to form a jet, and then fall back down the side, larger granules tending to remain on top. Inlet gas temperatures of 280-600 DEG  C. are referred to. The exhaust gases are treated to recover dust (which is returned), heat, unreacted gases and gaseous products.  The product may be screened to obtain granules 0.5-8 mm. in diameter, and fines recycled.  The reactor may be cylindrical with a conical lower end of angle 55-65 degrees, the top of the bed being 20-70 cm. above the top of the cone.  The reactions listed are:  (1) Ammonium phosphate from dil. H3PO4 and gaseous NH3 (Example 1).  (2) Na phosphate from dil. H3PO4 and NaOH.  (3) Triplesuperphosphate from dil. H3PO4 and pebble phosphorite (Example 2).  (4) (NH4)2SO4 from NH3 and H2SO4.  (5) Ammonium sulphonitrate from NH3 and (NH4)2SO4, NH4NO3, HNO3 and/or H3PO4.  (6) Na or K carbonate from CO2 and dil. NaOH or KOH.  (7) AlF3 from gaseous or aqueous HF and Al(OH)3 slurry.  (8) Complex fertilizers from HNO3, H3PO4, NH4NO3, gaseous NH3, and K salts, e.g. K2SO4 or KCl, N/P2O5/K2O ratios of 16/16/16, 8/24/24, 18/16/32, 11/22/22 and 12/24/12 may be obtained (Example 3).
Patent GB-1392957-A (GB)
Title: Covers for manholes pits catches and the like
IPC: E02D29/14
Filed: 1972-07-21
Abstract: 1392957 Making manhole covers FREDERICK JONES & SON (OSWESTRY) Ltd 28 Feb 1973 [21 July 1972] 34172/72 Heading B3A [Also in Division E1] A non-slip manhole cover is made from flat sheet steel by (a) pressing a pattern comprising rows of ribs or projections on one face with corresponding indentations on the opposite face, the material being of substantially constant thickness across any one projection, and (b) forming depending side flanges either by bending the marginal areas of the sheet or by welding metal sections thereto. The pattern is formed over the whole of the sheet apart from its marginal areas.
Patent GB-434067-A (GB)
Title: Improvements in exercising devices
IPC: A63B21/055
Filed: 1934-11-28
Abstract: 434,067. Exercising - apparatus. THOMAS, J., (trading as GASTON & ANDREE), 12, Bruton Street, New Bond Street, London. Nov. 28, 1934, No. 34177. [Class 132 (i)] An exercising-device comprises a spring or springs secured at one end to one or more loops or straps adapted to be passed around the neck or shoulders of the user and at the other end to one or more loops or straps adapted to receive the user's feet or legs, the device being so dimensioned that when adjusted upon a user sitting with his legs extended, the spring is just tensioned. As shown in Fig. 1, a spiral spring 1 is secured to a padded neck loop 2 and to foot loops 3 having elastic heel elements 4. In Fig. 2, the foot loops are connected to separate springs 1 attached by straps 7 adapted to pass over the shoulder to a belt 5. The foot loops may be replaced by garter straps adapted to be secured to the legs just below the knee.