baber/WOPTO huggingface dataset:
Patent GB-500269-A (GB)
Title: An improved refrigerating plant
IPC: F25B35/04
Filed: 1937-04-28
Abstract: 500,269. Refrigerating. POLLUX PATENT AKT.-GES: April 28, 1937, No. 12161. Void. Convention date, May 19, 1936. [Class 29] Absorption machines and systems.-A reversing machine particularly for a domestic refrigerator comprises an aircooled generator absorber i having a heating tube i<11> carrying spaced perforate discs between alternate pairs of which solid absorbent, e.g. calcium or strontium chloride, is packed, a condenser consisting of interconnected superposed finned cylinders a, b, a condensate reservoir ql, and an annular evaporator r disposed in a tank of brine. The machine is charged with liquid refrigerant, e.g. ammonia, through a connection h, and generator-absorber is provided with perforate vapour distribution tubes k, and has a cooling surface not exceeding 0À28 sq. m. per kg.-mol. of absorbent. The generator-absorber and the condenser are disposed in a compartment at the top of the cabinet having air inlet and outlet louvres c<11>, c<1> respectively, and are separated by a partition d preferably of heatreflecting sheet-metal.
Patent GB-1419598-A (GB)
Title: Preparing iron-containing powder
IPC: C21B13/00
Filed: 1973-03-14
Abstract: 1419598 Iron oxide composition PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 14 March 1973 [17 March 1972] 12243/73 Heading C1A [Also in Division C7] An acicular mixed oxide hydrate of Fe with a minor portion of at least one of Ni, Co, Ru, Pt, Pd and Sn is produced by forming a solution of salts of the desired metals, precipitating mixed hydroxides with NaOH, and oxidising the precipitate in a stream of air. The atomic ratio of the metal to Fe in the oxide hydrate is at least 0À003. The mixed oxide hydrates are subsequently reduced with H 2  at T<350 C. to form acicular powders of Fe containing, in examples, 3 at per cent Co; 3 at per cent Ni-1 at per cent Sn; and 3 at per cent Ru-1 at per cent Sn.
Patent GB-162619-A (GB)
Title: Sheet metal nuts
IPC: B60C29/00
Filed: 1920-02-25
Abstract: 162,619. Schrader's Son, Inc., A., (Assignees of Kraft, H. P.). March 21, 1919, [Convention date]. Dust-caps for tyre valves. -A sheet-metal nut for use as a rim-nut for tyre valves adapted to receive a dustcap is formed in two parts Y, Z, each of which is provided with a flange forming a recess and fitting one within the other. Cylindrical extensions Y<1>, Z<1> are threaded on the inner and outer sides respectively, the former engaging with the valve casing A, and the latter with a dust cap. The recessed flanges are hexagonal in shape, and are locked together by upsetting the inner edge of the outer one Y. A washer Y<2> is provided between the part Y and the rim B.
Patent GB-294305-A (GB)
Title: Improvements in or relating to terminals or couplings for electric wires
IPC: H01R4/48
Filed: 1927-05-09
Abstract: 294,305. Linsell, A. A. May 9, 1927. Binding-posts and terminals.-An ordinary binding-post is mounted on an insulating member which insulates the fixing means from the binding post. A member B, Fig. 1, of glass, ebonite, cement, &c. is cemented to the binding-post A and carries one or more spikes C, a screw, or other fixing means. The insulator may be of rubber and made in one with a suction cup C, Fig. 4, that constitutes the fixing or retaining member. A glass insulator B, Fig. 10, may be employed supporting a straight or curved helix A of resilient wire attached by one or both ends. A supporting plate D, Fig. 9, may be used with the helix A.
Patent GB-564024-A (GB)
Title: Manufacture and use of tetrakisazo-dyestuffs
IPC: C09B35/50
Filed: 1942-09-02
Abstract: Tetrakisazo dyes are obtained by tetrazotising a diaminodisazo compound of the general formula <FORM:0564024/IV/1> wherein R represents a benzene or naphthalene residue, w represents a group NH2 (derived by reduction of a group NO2 or saponification of a group NHAcyl) in m- or p-position to the azo group, two x's represent H and the third represents a residue of the general formula <FORM:0564024/IV/2> wherein y represents H or alkoxy and one z represents H and the other H or SO3H, and coupling with resorcinol or m-aminophenol (2 mols.).  The products give on fibres of natural or regenerated cellulose dark dyeings of which the shades and the fastness to wet treatments may be improved by after-treatment with formaldehyde or with a diazo compound.  In some cases the dyeings are dischargeable.  Specified nitro and acylamino components are 3- and 4-nitroanilines and their 6-methyl and 6-methoxy derivatives, 3- and 4 - acetylaminoanilines, 4 - oxalylaminoaniline, 2-methyl-4-acetylaminoaniline, 2 : 5-dimethyl-4-acetylaminoaniline, 3-acetylamino-4-methoxyaniline and sulphonic acids thereof, and 1-amino-4 - nitro- or acetylamino - naphthalene - 6 or 7-sulphonic acids, and specified 1-aminonaphthalene components are 1-aminonaphthalene itself and its 2-methoxy- and 2-ethoxy derivatives and their 6- or 7 - sulphonic acids.  Examples relate to the production of the dyestuffs: (1) resorcinol or 3-aminophenol \sM 1 : 4 - diaminobenzene (from 4 - acetylaminoaniline) --> (alkaline) 1 : 5 : 7-, 2 : 5 : 7- or 2 : 8 : 6 - acid --> 1 - aminonaphthalene --> resorcinol or 3-aminophenol; the 1 : 4-diaminobenzene may be replaced by its 2-methyl- or 2 : 5-dimethyl-derivative (from the 4-acetylamino compound); (2) resorcinol \sM 1 : 4-diaminonaphthalene - 6 - sulphonic acid (from the 4-acetylamino compound) --> (alkaline) 2 : 5 : 7- or 2 : 8 : 6-acid --> 1-aminonaphthalene or its 2-methoxy- or 2-methoxy-6-sulphonic acid derivative --> resorcinol; (3) resorcinol \sM 1 : 4-diaminobenzene (from 4-oxalylaminoaniline) --> (alkaline) 2 : 5 : 7-acid --> 1 - amino - 2 - methoxynaphthalene or its 6-sulphonic acid --> resorcinol; (4) resorcinol \sM 1 : 4-diaminobenzene (from 4-acetylaminoaniline) --> (alkaline) 2 : 5 : 7-acid --> 1-aminonaphthalene-6-sulphonic acid --> resorcinol; (5) resorcinol \sM 1 : 3-diaminobenzene (from 3-oxalylaminoaniline) --> (alkaline) 1 : 5 : 7-, 2 : 5 : 7- or 2 : 8 : 6-acid --> 1-aminonaphthalene --> resorcinol.  Examples are also given of the dyeing process for cotton with (a) development with diazotised 4-nitroaniline, (b) development with aqueous formaldehyde.  2 : 5-Dimethyl-4-acetylaminoaniline is obtained by reducing the nitro group in the product of successive acetylation and nitration of 2 : 5-dimethylaniline.  3-Acetylamino-4-methoxyaniline is obtained by reducing the nitro group in the product of acetylation of 5-nitro-2-methoxyaniline.
Patent GB-497198-A (GB)
Title: Improvements in secret telephone communication systems
IPC: H04K1/02
Filed: 1938-04-27
Abstract: 497,198. Secret transmission. STANDARD TELEPHONES & CABLES, Ltd. April 27, 1938, No. 12512. Convention date, May 15, 1937. [Class 40 (iv)] In a telephone system, pauses in speech are occupied by noise or by portions of a recorded speech, reproduced at a normal or an abnormally slow rate, which are prevented, under control of a pilot current, from reaching the subscribers. The pilot may be a complex current the frequency components of which are periodically varied under the control of a tape transmitter. These arrangements may be combined with scrambling arrangements of known kind, e.g. those described in British Specification 366,921 or with arrangements as disclosed in U.S.A. Specification 1,981,114 for transmitting message elements in jumbled order. Systems using a single-frequency pilot current. In the system shown in Fig. 4, when neither party is talking, pilot 'current of frequency f 1 is sent out from an oscillator 342 together with speech currents reproduced from a record 322, and pilot current of frequency f2 is received together with speech currents from the distant record, and the latter are recorded on a blank 373. The receiving path beyond the recording apparatus is disabled by relay 378. When subscriber 281 speaks, 293 removes a disablement from the sending path and 298 disables the receiving path. 296 cuts off the pilot current and 297 stops the reproducing gramophone. When the distant party speaks, the pilot current f2 is no longer received and 377, 378 are released to stop the recording phonograph and remove a disabling shunt from the receiving path. The transmitting path is disabled by 383. Additional privacy circuits are provided at 299, 349. In a simpler arrangement, Figs. 1 and 2 (not shown), the gramophone is used merely to provide interfering signals and accordingly is run continuously, no record being made at the other end. System with complex pilot, Fig. 3. The condition of relays 171 .. 177 is governed by a perforated tape 186 driven step-by-step by a magnet 188. Relays 231 .. 237 at the receiving end are kept in the same condition as the relays 171 .. 177 by an identical tape driven synchronously with the tape 186. When subscriber 182 is silent, a combination of frequencies corresponding to the energized relays is sent out and these frequencies are separated by filters and fed to detectors 222 .. 228, but since the corresponding relays at the receiving end are energized, no effect is produced. When the subscriber speaks however, control relays at 268, 271 cause the frequencies corresponding to the de-energized relays to be sent out, and these after rectification exercise control over wire 276 to complete the circuit to the subscriber 266.
Patent GB-514112-A (GB)
Title: Improvements in or relating to weather boarding
IPC: E04F13/10
Filed: 1938-04-27
Abstract: 514,112. Walls. PALMER. W. April 27, 1938. No. 12553. [Class 20 (iv)] A wall comprises an assembly of interengaged wooden weather boards 1 each of which is of substantially rectangular cross-section and is provided along its two longitudinal edges with a tongue and groove respectively; each board is also cut on its external face to form along one marginal edge a longitudinal recess 2 and also to form a plurality of longitudinally-spaced vertical grooves 3 which are staggered relatively to the vertical grooves of adjoining boards. The assembly presents the appearance of brickwork or stonework and the grooves 3 serve as water conductors for conducting accumulated rainwater away from the junctions of the boards.
Patent GB-1082701-A (GB)
Title: Improvements in or relating to liquid metering devices
Inventor: MURRAY ROBERT WILLIAM
IPC: F16K21/18
Filed: 1966-03-22
Abstract: 1,082,701. Regulating fluid flow. AMERICAN NATIONAL VALVE CORPORATION. March 22, 1966, No. 12640/66. Heading G3H. [Also in Division F2] Hand control of a liquid-dispensing device is effected by turning a control knob 52, so that a pin 59 prevents operation of a movable closuremember 42. A pump then urges liquid past an adjustable flap or butterfly valve (28), Fig.2 (not shown) and through channels (26, 27) to an outlet (36) connected to a nozzle. To dispense a given quantity of liquid just short of the desired quantity the knob 52 is positioned to withdraw pin 59 and place the appropriate one of three variably-restricted passages 58 between channel (27) and the space behind a spring-loaded piston 22. Liquid from the pump passes to the outlet (36), a portion of which passes a spring-arm check-valve 63 and fills the space behind the piston 22. The valve (28) restricts the flow to the outlet (36) and causes a pressure to act on the front of piston 22 which is urged rightwards at a speed dependent upon the rate at which liquid is urged from the space behind the piston into the channel (27) via the restricted passage 58. As the piston ends its stroke it closes the member 42 to prevent further liquid discharge. The quantity of liquid discharged thus depends upon the speed of movement of the piston and hence upon the particular restricted passage 58 in use. The flow area of each of the latter may be varied by a screw (66), Fig. 8 (not shown). The closure member 42 may be opened manually by the knob 52 through pin 59. An additional passage 105 of variable crosssection may be disposed between the channel (27) and the space behind the piston 22.
Patent GB-685940-A (GB)
Title: Improvements in or relating to change-speed control mechanisms for motor vehicles
IPC: G05G5/02
Filed: 1950-05-20
Abstract: 685,940. Change-speed control. NAYLOR, J. T., and ATKINSON LORRIES (1933), Ltd. June 22, 1951 [May 20, 1950], No. 12675/50. Class 80 (ii). A forward control gear-shift lever 9 on a commercial vehicle slides and turns a gear-actuating shaft 7 by engagement of its flattened lower end 9 in an axia slot 10 in the shaft. The lever fulcrums between hardened transverse pins 8 in an oil-filled casing 5 and its lower extremity 9a moves over a fixed base plate 11 having a stepped rib 22, 23 over which the lever 9 must be lifted to different levels before the lever can be moved laterally into the channel for selecting low (position B) or reverse (C), such lift being opposed by a tension spring 20 biasing the lever downwards and also laterally to neutral (A). Three other forward speeds (axial positions D, E) are reached without lifting. Outward pull on the lever 9 is limited by abutment against the fulcrum pins 8 of sideplates 16 bolted to the lever and carrying rattlepreventing resilient pads 18. Hardened transverse pins 12 form the axial boundaries of the shaft slot 10.
Patent GB-1535229-A (GB)
Title: Plastics moulded containers
IPC: B65D1/24
Filed: 1977-01-19
Abstract: 1535229 Bottle crates G P G HOLDINGS Ltd 19 Jan 1977 [30 March 1976] 12715/76 Heading B8P [Also in Division B5] An injection moulded bottle crate having  partitions 4, 5, 6 crossing other partitions 7, 8, 9 has thickened handle portions 19, 20 on partition 4 and apertures 21, 22 in the base beneath the portions 19, 20 to allow parts of the mould that form the handle to be withdrawn downwardly through the bottom of the crate.
Patent GB-391609-A (GB)
Title: Improvements in or relating to apparatus for treating materials such as stone, gravel and the like to remove particles adhering to the surfaces thereof
IPC: B03B5/48
Filed: 1932-05-04
Abstract: 391,609. Disintegrating, sifting, and washing gravel &c. WETTLAUFER, W. L., 40, Pearl Street, Buffalo, New York, U.S.A. May 4, 1932, No. 12848. [Classes 59, 82 (ii) and 117.] Material adhering to stone, gravel, &c. is broken away by being thrown across the walls of a pocket where it is scoured and subjected to a jet of water. As shown in Fig. 11, gravel from a hopper 69 falls on to a rotating drum 66, provided with rubber &c. projections, and is thrown into a recess 68 from which it falls on to a sieve 72 and descends on to a similar drum for further projection. A deflector 71 is provided in the recess 68 to guide the material on to the sieve and a water jet 70 may wash the material. Stones &c. which do not reach the recess 68 fall on to a conveyer 75 and are discharged on to the sieve. Grit &c. passing through the sieves is discharged through an outlet 73 and the finished material is collected at an outlet 74. The throwing drums and conveyers may be arranged in a spiral around an annular square or triangular tower so that the finished material is discharged from the top of the tower to sifting screens or for loading into receptacles. The material at each stage of the projection may be provided with two screens of varying mesh and the material collected from either. The screens 47, 48, Fig. 8, may be supported by a bracket 57 at one end resting on springs 59 and by a crank 55 under the screens which provides a jigging motion thereto. The material is washed by a water jet 50 and falls on to a drum 45 by which it is thrown to the next higher row of sieves, any heavy material not reaching the sieve being conveyed thereto by a band 44a. The apparatus may be used solely to grade the material when disintegration or washing is not required.
Patent GB-1254065-A (GB)
Title: Production of olefin oxides and also of isopropanol and acetone
IPC: C07C29/50
Filed: 1969-03-12
Abstract: 1,254,065. Production of olefin oxides, isopropanol and acetone. BADISCHE ANILIN- & SODA-FABRIK A.G. 12 March, 1969 [13 March, 1968], No. 12893/69. Heading C2C. A process for the production of olefin oxides, isopropanol and acetone comprises reacting an olefinically unsaturated compound having at least three carbon atoms in the carbon chain and isobutyraldehyde with molecular oxygen or a molecular oxygen-containing gas in the liquid phase at a temperature of from 40‹ to 250‹ C.
Patent GB-945055-A (GB)
Title: Improvements in or relating to locks
IPC: E02C1/00
Filed: 1960-04-11
Abstract: 945,055. Locks. G. M. PHILLIPS. July 10, 1961 [April 11, 1960], No. 12900/60. Heading B7S. [Also in Division F3] In a lock for raising and lowering waterborne vessels between two different water levels comprising a lock basin 1 in communication with the lower water level, a floating lock structure 5 mounted on trunnions movable in arcuate rails on the walls of the basin, the lock structure having a channel 11 capable of communicating at one end with the upper water level when the structure is in a horizontal position, and a guillotine gate 18 for sealing the upper from the lower water level, the structure is tiltable so that the other end thereof communicates with the lower level, the arrangement being such that when the lock structure is horizontal a vessel can proceed from the upper water level into the structure and when the structure has been tilted the vessel can then proceed to the lower water level. The basin contains safety booms 3 and 4, each comprising two arcuate members upstanding from the water level, spaced apart a width equal to the width of the lock, and mounted on a turntable.
Patent GB-1081505-A (GB)
Title: Primer for internal combustion engine
IPC: F02N99/00
Filed: 1966-03-23
Abstract: 1,081,505. Spray carburetters. CLINTON ENGINES CORPORATION. March 23, 1966 [June 14, 1965], No. 12908/66. Heading F1B. Fuel from the float chamber passes through passages 46 to an annular chamber 48 and then through orifices 62 to a passage 60 in a needle valve 42, which control the fuel nozzle 40. The passage 60 communicates via a pipe 68 with a tube 70, which fills with fuel up to the level 22 maintained in the float chamber. For priming the engine at starting, manual operation of a bellows 72 forces this fuel through the passage 60 and the fuel nozzle 40 into the fuel-air mixture passage 14. The orifices 62 are small so that the tube 70 is refilled slowly, thus ensuring that repeated operation of the bellows does not flood the engine.
Patent GB-253341-A (GB)
Title: Improvements in or relating to saws
IPC: B23D61/12
Filed: 1925-05-18
Abstract: 253,341. Smith, W. D. May 18, 1925. Saws.-Narrow saw teeth which are staggered on the edge of the blade are formed in a sinuous line by bevelling each side of the blade alternately. In the example shown, each bevel c covers six teeth, so that the width of the point of each-tooth b is one-sixth of the width of the blade. Clearance may be provided by bevelling the teeth separately as at d.
Patent GB-128985-A (GB)
Title: Improvements relating to Ignition Apparatus for Internal Combustion Engines.
IPC: H02K19/22
Filed: 1917-09-10
Abstract: 128,985. Watson, E. A., and M-L Magneto Syndicate. Sept. 10, 1917. Rotary machines; cores and yokes.-In an induction-coil ignition system, magnetism is separately induced in the core of the induction coil by means of an electro-magnet during the intervals when the primary circuit is open, in order to ensure satisfactory working at high speeds. In the apparatus shown, for igniting in a twelve-cylinder engine, the rotary electromagnet a comprises a pair of disks with projecting pole-pieces b, the poles of one disk lying alternately with those of the other. The induction coil f has a laminated core e and laminated limbs d so placed that the pole-pieces b intermittently magnetize the core, e in alternate directions. The spindle of the electro-magnet a is driven from the engine and carries an interrupter, a distributor, and a slip ring, which supplies current to the winding of the electro-magnet, either from the same source as that supplying the primary of the induction coil, or from a separate source.
Patent GB-607207-A (GB)
Title: Ceramic articles such as artificial teeth and material and method for colouring or shading the same
IPC: A61C13/083
Filed: 1945-05-24
Abstract: 607,207. Artificial teeth. MERCER, R. (Dental Research Corporation). May 24, 1945, No. 13015. [Class 81 (ii)] [Also in Groups V and X] A method of forming an artificial tooth, having different colours or shades along different parts thereof, comprises mixing particles 10, 11, 12 of ceramic material, e.g. nepheline syenite, of different colours and sizes, all the particles of one size being of the same colour, in predetermined quantities with a binder such as distilled water, filling the cavity of a mould 14 and vibrating the mould to settle the larger particles to the bottom, the finer to the middle and the finest to the top of the mould. The finer particles fill in the spaces between the adjacent larger particles to produce a uniform blending between colours. The particles of any one size may include some uncoloured particles.
Patent GB-258316-A (GB)
Title: Improvements relating to the construction of rigid airships
IPC: B64B1/00
Filed: 1925-05-20
Abstract: 258,316. Richmond, V. C., and Scott, G. H. May 20, 1925. Aerostats.-The transverse frames m of a rigid airship are unequally spaced apart for the purpose of avoiding excessively large gas bags in the centre or excessively small bags at the ends, or for the purpose of being best adapted to carry the loads. Preferably the spacing is such that distance between successive frames increases progressively towards the ends. The gondolas or cabins such as c are located directly below a frame which may be slightly displaced as at s to meet local requirements. One or more regularly or irregularly spaced intermediate frames i may be used in some or all of the bays.
Patent GB-776097-A (GB)
Title: Rotary fluid compressor
IPC: F04B39/16
Filed: 1955-05-06
Abstract: 776,097. Rotary compressors. CHICAGO PNEUMATIC TOOL CO. May 6, 1955 [May 11, 1954], No. 13181/55. Class 110 (2). [Also in Group XXIV] A machine for compressing fluids comprises in combination an engine 31, a rotary compressor 32 including axially disposed low- and high-pressure rotors 59, 61 of the outwardly sliding vane type, shaft means for said rotors, an oil pump 104 directly connected to said shaft means for delivering oil to the compressor for reducing the compression temperature therein and for sealing the compression chambers against fluid leakage about the shaft means, a receiver 42 connected to the air exhaust chamber formed in the highpressure stage and an oil separator 44 which is mounted on the receiver and includes a removable filter adapted to remove oil from the fluid passing therethrough. The compressor portions are interconnected by a coupling 74 and are connected to the engine by a clutch 82, bearings 94, 96 and packing means 101 being arranged as shown. The inlet of the compressor 59 is provided with a valve 127 and a screen 128 whilst the outlet of the compressor 61 is provided with a valve 137. The gear type oil pump 104 incorporates a relief valve 108 and circulates oil through conduits 114, 118, 115, 117, 120, 125, 130 as shown. The machine also includes an air cleaner 33 and a radiator 38 for the engine, an oil cooler 39, an oil filter 41 and an air cleaner 36 for the compressor, a throttle control 49, a relay valve 51, a pressure transformer 52 and additional oil and air filters 53, 55 for details of which members the Specification should be referred to.