baber/WOPTO huggingface dataset:
Patent GB-656887-A (GB)
Title: Improvements in or relating to aerials
IPC: H01Q7/00
Filed: 1948-01-22
Abstract: 656,887. Aerials. PHILIPS ELECTRICAL, Ltd. Jan. 22,1948, No. 1944. Convention date, Jan. 25, 1947. [Class 40 (vii)] An aerial system comprises a central loop which is surrounded by and coupled to a plurality of metallic plates forming effective short-circuited loops extending outwards from the periphery of the central loop aerial. By this means the effective area and the radiation resistance of the loop aerial is increased. In Fig. 1, which is stated to be a known form of aerial, the loop 1 is coupled at 2 to an axiallyextending transmission line and is surrounded by a slotted annular metal plate 3 lying in the plane of the loop. Owing to the skin-effect current flowing in the plate 3 is concentrated towards its periphery and consequently the plate behaves equivalently to a short-circuited loop. In this system the diameter of the plate is such that the current is not equally directed at all points on the outer periphery of the plate 3 and accordingly a radiation pattern as shown in Fig. 2 results. In Fig. 3, illustrating an embodiment of the invention, the single plate 3 is replaced by a plurality of sectors 6 which are so dimensioned that at any instant the current is equally directed at all points on the outer periphery of the system, thus resulting in a substantially uniform radiation pattern in the horizontal plane Fig. 8 (not shown) illustrates a modification wherein the plate 3 is divided circumferentially as well as radially. In satisfactory operation of the system very close coupling between the central loop and the metal plates is required and Fig. 7 shows a section through the system of Fig. 3 illustrating how this may be achieved. Neighbouring edges of the sectors may also be constructed to overlap one another. By making the circumferential lengths of the "loops" 6 equal to an odd number of quarter-wavelengths a very high effective radiation resistance may be achieved; however, the aerial then becomes very frequency-sensitive. This may be obviated by arranging that the circumferential lengths of the "loops" diverge in opposite directions (for example by 5 per cent) from the quarter-wavelength condition. Fig. 6 illustrates an arrangement having advantageous mechanical properties wherein the plates 6 are non-planar and are so arranged around the loop 1 so as to form a funnel-shaped surface. In the arrangements described the sectors are constructed of metal plates on which, if desired, a high - conductivity metallic layer may be deposited electrolytically. The sectors may be mounted on an insulating plate or they may be deposited chemically on to an insulating material. They may also be mounted at their centres on interconnected metal supports.
Patent GB-692058-A (GB)
Title: Rotary air or other gas pumps
Inventor: BOYCE GUY BARON
IPC: F04C29/02
Filed: 1951-01-26
Abstract: 692,058. Rotary pumps. HYDROVANE COMPRESSOR CO., Ltd. Jan. 2, 1952 [Jan. 26, 1951], No. 2023/51. Class 110(ii). An outwardly-sliding vane gas pump is supplied with liquid, for sealing and lubricating purposes, which flows from ducts h inwards and outwards along the vanes g. The liquid.flowing to slots i forces the vanes radially outwards, its pressure being controlled by a relief valve or counter pressure from the working chamber of the pump. Liquid is supplied from an inlet to annular ducts b, which communicate by way of rotor channels d. A relief valve k, Fig. 2 (not shown), opens when the pressure in the slots j and bore i exceeds a certain figure. Fig. 3 shows a modification in which pressure in the parts j, i, n, o, acts on the lefthand face of a piston q in opposition to a counterpressure, through a duct r from the working chamber. Liquid in a space p, under eccessive pressure, passes out through a passage s. In a further modification, the piston valve q is dispensed with and ducts o, r communicate with each other. The liquid may be separated from the discharged gas.
Patent GB-232697-A (GB)
Title: Improvements in the process of stretching leather and in means for carrying out said process
IPC: C14B1/26
Filed: 1924-01-26
Abstract: 232,697. Walker & Sons, Ltd., W., and Fogg, R. C. Jan. 26, 1924. Stretching by tension. -Leather in full hides or in sides or butts is subjected to lateral stretching by screw action, and this lateral tension is maintained unaltered while the leather is being stretched longitudinally. The hide A to be stretched is placed in a stretching frame, Fig. 1, composed of end bars a, c and side bars b, d, the bar c being adapted to slide over the bars b, d and to be clamped thereto at its ends at d in any position, while the hollow bar a has a flange m, Fig. 7, adapted to be engaged by a jaw of a stretching machine. The shoulder end of the hide is clamped by bolts 7 between the bar c and a clamping jaw 5 carried thereby, while the other end of the hide is carried between the jaws 6 of gripping devices carried and tightened by bolts 8 adjustable in slots w in the end bar a. The sides of the butt are engaged by clamping devices 9, which are tightened by bolts 10 and are carried on bolts 11 passing through brackets 12 slidable along the side bars b, d. The butt is placed in the frame and secured at its sides and ends. Lateral tension is then applied by the devices 9 through the fly-nuts 11<a> and bolts 11. The stretching frame is then taken to a stretching machine, the jaws of which engage the end bars a, c, and when the desired longitudinal stretching is attained the end bar c is clamped to the side bars b, d to maintain the leather in stretched condition until it is dry.
Patent GB-1327534-A (GB)
Title: Pressure responsive valve for connecting a fluid supply to  a fluid pressure reservoir
IPC: F15B1/027
Filed: 1972-01-17
Abstract: 1327534 Valves WESTINGHOUSE BREMSEN-UND APPARATEBAU GmbH 17 Jan 1972 [27 Jan 1971] 2112/72 Heading F2V A valve assembly for connecting a fluid supply 1 with an accumulator 4 when the pressure in the latter is below a cut-off pressure and a re-connection pressure, comprises a main passage 2, 5 through which fluid flows to the accumulator, a passage 10, 15 through which fluid flows to a reservoir 7, and a main valve member 13 controlling fluid flow in the passage 10, 15. Pressure in the accumulator 4 acts on a surface 16, which at the cut off pressure causes rightward movement of the valve member 13 against springs 22, 23. Fluid is therefore directed to the reservoir 7 via the throttling passage 15. In addition fluid flows into passages 11, 21 and acts on a piston surface 17 causing further rightward movement of the valve member. User equipment causes the pressure to drop below the cut-off pressure in the accumulator, however the valve member 13 does not shift leftwards to charge the accumulator until a much lower reconnection pressure is attained, due to the pressure acting on piston 17. In an alternative embodiment (Fig. 3, not shown) the throttling passage 15 is replaced by a flow restriction valve (25) interconnected with valve member 13.
Patent GB-109387-A (GB)
Title: Improvements in Fly-killing Appliances.
Inventor: ATKINSON JAMES HENRY
IPC: A01M3/02
Filed: 1917-02-14
Abstract: 109,387. Atkinson, J. H. Feb. 14, 1917. Insects, destroying.-Relates to bats for destroying flies and like winged insects of the type in which a flexible beater is secured in a handle. The beater is formed of selvedged fabric B, and is doubled in half along the line D which forms the outer edge of the beater. The ends are doubled inwards at the corners as at E so as to form a tapered six-fold end which is secured in the handle A.
Patent GB-369701-A (GB)
Title: Improvements in fluid filters or strainers
IPC: B01D25/00
Filed: 1931-01-22
Abstract: 369,701. Filtering gases. LIGHTFOOT REFRIGERATION CO., Ltd. and SINCLAIR, W., Bush House, Aldwych, London. Jan. 22, 1931, No. 2210. [Class 8 (ii).] A filter, for use in combination with the cylinder distributer of compression refrigerating apparatus for separating grit, scale, &c. from the returning refrigerant, comprises a number of filter units 15, supported in a header 10 in a casing having an inlet 8 and outlets 3, 4 connected to the several cylinders. The filter units are formed by winding a wire or like member helically in a thr ad on the outside or inside of a ribbed or perforated tube. The helix may have a support both inside and outside. The header 10 is attached by pillars 13 to a cover-plate 11 and can be removed therewith for cleansing of the-filters. The plate 11 is dished so that drops of liquid refrigerant collect upon it, the drops subsequently dissipating by evaporation.
Patent GB-274525-A (GB)
Title: A stand and support for telephone and telephone accessories
IPC: H04M1/215
Filed: 1926-01-26
Abstract: 274,525. Steuart, D. S. S. Jan. 26, 1926. Mouthpieces and attachments; desk and table sets.-A speaking-tube attachment for telephones comprises a mouthpiece connected to one end of a light flexible tubing the other end of which is connected to the telephone in place of the usual flared mouthpiece, the speaking tube being supported by an arm and linkage in such a way that the mouthpiece may be universally positioned according to the convenience of the user. A stand iis provided the circular base of which is inturned to receive the base of the ordinary table telephone, an upright being fitted with a recess against which the telephone column rests, the speaking tube attachment being supported by this upright in cases where attachment to the telephone itself is officially prohibited. In one form, Fig. 1, a length of flexible tube is secured at one end to the ferrule of the mouthpiece m<2> the other end being secured to a ferrule f which is screwed into the telephone. Attached to this ferrule is a forked rest c for the mouthpiece and a cup s for the ball end b of a tube t into which slides a rod r pivoted to a ring m<3> on the mouthpiece ferrule. The mouthpiece may thus be moved into any convenient position for the user and will stay so adjusted freeing his hands for use in making notes &c. In another form the rod r is rigid and passes through a rigid loop attached to the ferrule f about which loop the rod pivots, the lower end engaging, any of a series of stepped retaining recesses rigid with the ferrule. In another form two rods depend from the ferrule f and have surrounding them short sleeves to which are pivoted one pair of ends of a double linkage with stiffish joints, the other ends of which are pivoted to the mouthpiece ferrule.
Patent GB-1303783-A (GB)
IPC: G01N27/90
Filed: 1971-01-18
Abstract: 1303783 Eddy-current flaw testing ESSEM METOTEST AB 18 Jan 1971 [ 20 March 1970j 2304/71 Heading G1N Pipes are eddy-current tested for flaws by passing them axially through a pair of coils 11, 12 connected in a bridge circuit which responds to short flaws, a pair of differentially connected sensors 13,14 rotating around the pipe to detect long flaws. Sensors 13, 14 may be coils, Hall-effect elements, or magnetically sensitive resistors, diodes or transistors. Their differential output is amplified in an amplifier (41) rotating with them and is transferred via slip rings and brushes (42) to the rest of the circuit (43-47), Figs.7 and 8 (not shown). In another arrangement Fig.4 (not shown) a feed coil (17) surrounds two differentially connected measuring coils (18, 19).
Patent GB-1081070-A (GB)
Title: Improvements in or relating to snap action electric switches
Inventor: RUSSELL GROVER MCKEEL
IPC: H01H5/18
Filed: 1966-01-18
Abstract: 1,081,070. Snap-action switches; retractive switches. PENN CONTROLS Inc. Jan. 18, 1966, No. 2348/66. Heading H2B. A cantilever blade (21) carrying a moving contact at its free end has a slot (43) in its central portion and is buckled by a transverse clamp (40) adjustable by a screw (45) so as to provide stable upwardly or downwardly buckled positions and is snapped from one to the other by the application of torsional force to part of the blade near its fixed end. In the embodiment of Fig. 1 (not shown) an arm (50) is secured perpendicularly to the blade (21) such that a lateral thrust on the arm will actuate the switch, while in the embodiment of Fig. 2 (not shown), an arm (50a) is similarly secured to the blade but is cranked such that an axial thrust on the end of the arm will result in torsional force on the blade. By providing various lengths and shapes of arm the angle of application of the operating thrust and its force/movement relationship may be suited to requirements without introducing any additional friction to increase the work necessary to operate the switch.
Patent GB-111079-A (GB)
Title: Improvements in Carburetters for Internal Combustion Engines.
Inventor: DEBAUGE HENRY
IPC: F02M1/00
Filed: 1917-02-17
Abstract: 111,079. Debauge, H. Oct. 18, 1916, [Convention date]. Spray carburettors; vaporizers, external.- In an arrangement for supplying light and heavy fuels to a variable number of nozzles 8 in accordance with the working conditions of the motor, the fuels are supplied by a multi-way distributor 5 and are heated in passing around an annular chamber 3 containing a fusible alloy, through the inside of which the exhaust gases pass. The nozzles are controlled by a rotary valve 13 with ports 14 adapted to uncover, in front of each nozzle in action, an opening 12 through which the fuel is drawn mixed with air previously heated on its passage through an outer chamber 9 surounding the alloy chamber 3. The fuel disuributor 5 and valve 13 are connected by gearing The distributor is adapted to supply light fuel through passages a and conduits 6, 7 to one or more nozzles on starting the engine and then to stop the supply of fuel to these nozzles and simultaneously to open the supply of heavy fuel to one or more of the other nozzles. Finally, the remaining heavy fuel nozzles are supplied successively until they are all in operation. The rotary valve 13 uncovers the openings corresponding to tho nozzles to which fuel is being fed.
Patent GB-899568-A (GB)
Title: A parallel pushpull hybrid circuit
IPC: H03F3/22
Filed: 1961-01-20
Abstract: 899,568. R.F. couplings; valve amplifying circuits. NIPPON ELECTRIC CO. Ltd. Jan. 20, 1961 [Jan. 22, 1960], No. 2398/61. Classes 40(6) and 40(7). [Also in Group XL(b)] A parallel push-pull hybrid circuit consists of a first terminal 15, a pair of second terminals 16, 20 separated by a quarter wavelength from the first terminal, a pair of third terminals 17, 19 separated by a quarter wavelength from the second terminals and a fourth terminal 18 resistively terminated and located a quarter and threequarters wavelength from the third terminals respectively; all terminals being connected to a ring circuit comprising a coaxial tube, Lecher line or a waveguide. With an input at 15, output is obtained at 16, 20 in one phase and at 17, 19 in the opposite phase, or with inputs at 16, 20 in one phase and at 17, 19 in the opposite phase, a combined output is obtained at 15. A parallel push-pull amplifier circuit using a parallel push-pull hybrid circuit comprises, Fig. 4, a signal input terminal 22, a signal output terminal 23, terminating resistors 24, 25 and vacuum type amplifiers 26, 27, 28, 29 operated in the grounded grid mode, and connected by resonant lengths of a coaxial tube, Lecher line or waveguide in ring circuits 30, 31.
Patent GB-563504-A (GB)
Title: Improvements in telephone or like systems
IPC: H04Q3/00
Filed: 1943-02-13
Abstract: 563,504. Automatic and semi-automatic exchange systems. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd., GILLINGS, C., and BEALE, C. E. Feb. 13, 1943, No. 2401. [Class 40 (iv)] In a mixed system, of the kind described in Specifications 560,794 and 561,155 in which some junctions are equipped for voice frequency signalling and some for direct current signalling, the VF junctions being provided at either end with converting relay sets, in order to reduce the number of conversions in a connection over several junctions in tandem, each incoming relay set sends forward after each train of direct current impulses a voice frequency testing signal to determine whether continued conversion is necessary, and each outgoing relay set on receiving such a signal immediately after seizure sends back a direct current signal, the effect of the two signals being to provide a straightthrough path for subsequent voice frequency signals. In the system shown in Fig. 1, in which a call between exchanges A and D is set up from a manual board MB over two V.F. junctions VFT1, VFT2 with an intermediate D.C. junction DCT, the first digit sent in V.F. form from ORS1 is converted at 1RS1 to D.C. form to the selector 1S1 at exchange B and the second digit is similarly converted and repeated over DCT to set the selector 1S2 at exchange C. The testing signal following the first digit is without effect, but that following the second digit is received at OPS2, where switch-through takes place and a signal comprising a reversal of line current is returned to bring about switch-through at 1RS1. Subsequent dialling and supervisory signals therefore pass directly between ORS1 and IRS2. The operator's clearing signal, which consists of frequency X for at least 2 seconds followed by frequency Y, takes effect at both IRS1 and IRS2. It will be noted that if the outgoing repeater of the junction DCT includes an impulse regenerator, the testing signal will not reach ORS2 and the switch-through mentioned above will not take place. In this case, the supervisory signals are transmitted in cascade, passing between ORS2 and IRS1 in D.C. form, and the V.F. signals arriving at ORS2 are prevented from reaching the junction DCT. The outgoing and incoming relay sets described with reference to Figs. 2-5 and 7, 8 (not shown) are similar to those of the prior Specifications apart from modifications concerned with the features stated above. In a further modification, Figs. 9, 10 (not shown), the reply signal is transmitted in cascade when an impulse regenerator has been used in setting up the connection, but the X frequency acknowledgment signal from ORS1 takes effect in succession at 1RS1 and ORS2 to condition the circuits for end-to-end transmission, so that the release signal may pass directly without conversion.
Patent GB-498428-A (GB)
Title: Improvements in or relating to teleprinter exchange systems
IPC: H04L12/00
Filed: 1937-07-09
Abstract: 498,428. Telegraph exchange systems. STANDARD TELEPHONES & CABLES, Ltd., and HYDE, G. A. M. July 9, 1937, No. 2409/38. 'Divided out of 498,416. Drawings to Specification. [Class 40 (iii)] In an automatic teleprinter exchange system, release of an established connection is effected by the transmission from either substation of a long spacing signal which is not however effective until a predetermined time after marking conditions have been restored so that if the signal is repeated after a short marking period release is prevented and an operator is called in to the connection. The invention is described with reference to a system which is substantially identical with part of the system described in Specification 498,416. Specification 389,922 also is referred to.
Patent GB-1002363-A (GB)
Title: Pyridine-3-carboxylate of 3,4,5-trimethoxybenzoyl methyl reserpate, its obtention and its therapeutic applications
Inventor: RIERA JUAN COLOME
IPC: C07D459/00
Filed: 1963-01-19
Abstract: The invention comprises the pyridine-3-carboxylic acid salt of methyl 3,4,5-trimethoxybenzoyl-reserpate and its preparation by direct reaction of pyridine-3-carboxylic acid with methyl 3,4,5-trimethoxybenzoyl reserpate in a non-polar common solvent or mixture of solvents, e.g. dioxane.  Preferably the reactants are present in equimolecular proportions and the product is separated by vacuum evaporation of the solvent, while sheltered from light, in an inert atmosphere, at a temperature between room temperature and 45 DEG  C.  The latter stages of the vacuum evaporation may be facilitated by adding a solvent of higher volatility to diminish the boiling-point of the mixture; alternatively the product may be precipitated from the partially evaporated solution by addition of a solvent of lower polarity, such as an ether.  Pharmaceutical preparations for the treatment of hypertension comprise the above salt and a diluent or carrier.
Patent GB-667870-A (GB)
Title: Process for the preparation of hydroxylamine
IPC: C01B21/14
Filed: 1950-01-31
Abstract: Hydroxylamine is prepared by hydrogenating nitric oxide in the presence of a platinium catalyst and in an acidic medium, the pH being preferably below 2.50, at a temperature between the free-lying point of the reaction mixture and 40 DEG C. preferably from 0 DEG -10 DEG C. and the molar ratio of nitric oxide to hydrogen being less than 1 preferably 1:1.5 to 1:6.  The process may be continuous, nitric oxide and hydrogen being passed into a solution of a strong mineral acid containing the platinium catalyst, a pH less than 2.25 being maintained by adding fresh acid and simultaneously withdrawing a portion of the reaction mixture whilst keeping the temperature between -5 DEG C. and 30 DEG C.  The preferred acids are hydrochloric, nitric, sulphuric or phosphoric but dilute acetic may also be employed and the reaction may be carried out at increased pressures.  The acidic hydroxylamine solution may be purified to yield hydrolylamine salts of the acid used, or neutralized to give pure hydroxylamine.
Patent GB-1068171-A (GB)
Title: Improvements relating to radiation sensitive devices
Inventor: WARDLEY JOHN
IPC: H01J29/45
Filed: 1963-01-19
Abstract: 1,068,171. Photo-electric devices. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 20, 1964 [Jan. 19, 1963], No. 2452/63. Heading H1K. A radiation-sensitive target includes antimony triselenide with an excess of antimony above the stoichiometric proportion. The target, which may include also antimony trisulphide with a stoichiometric excess of antimony, is produced by vapour deposition.
Patent GB-1442532-A (GB)
Title: Magnetic brush developing apparatus
IPC: G03G15/09
Filed: 1974-01-18
Abstract: 1442532 Developing electrostatic images MINOLTA CAMERA KK 18 Jan 1974 [25 Jan 1973] 02452/74 Heading G2H Magnetic brush developing roller 1 is both fed with powder developer and stripped of excess developer by vaned developer-mixing agitator 14, which is located above the roller 1 and is so constructed and rotated that the buckets between its vanes, transport and mix the developer. Fresh toner is added by dispenser 11. Two developing rollers may be used with one agitator, which may be located above one roller or above both.