baber/WOPTO huggingface dataset:
Patent GB-119220-A (GB)
Title: Improvements in and relating to Method and Apparatus for Electric Heating by High Frequency Currents.
IPC: F27D11/06
Filed: 1918-03-19
Abstract: 119,220. Ajax Metal Co., (Assignees of Northrup, E. F.). Sept. 19, 1917, [Convention date]. Induction and resistance furnaces ; heating by electricity.-Electric induction heating is effected by the use of high-frequency currents maintained in amplitude. They may be impressed by a high-frequency generator on an approximately-tuned circuit containing the inducing coil. Frequencies at 12,600 and 20,400 have been found suitable. The power factor may be unity. The invention is applicable to the heating of metal blooms or billets, or thin metal shells, or local heating of bodies, but is described as applied to an electric furnace. A high-frequency dynamo H, Fig. 1, may be connected, directly or through a transformer, to a variable condenser C<2> shunting an inducing coil L'. A current much larger than that traversing the generator can then be produced in the circuit of the condenser and coil. A discharge gap may be added to this arrangement. In a vacuum furnace, a crucible 11, Fig. 5, may be supported by lion-conducting material 15 in an exhausted casing 12 surrounded by the inducing coil O. Either the crucible or the charge may act as the secondary circuit. In the latter case, electro-dynamic circulation is produced. Specification 111.844 is referred to. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the use of currents obtained by condenser discharge. Fig. 1 (cancelled) shows an inducing coil 0 connected to supply conductors A, A<1> through a condenser C in one lead and inductances L<1> - - L<4> in both leads. A spark-gap G shunts the leads between the two pairs of inductances. Alternatively, the inducing coil may be arranged in the shunt circuit containing the discharge gap. Instead of the inductances L<3>, L<4>, a blow-out device may be provided for preventing short-circuiting by the discharge. A step-up transformer is added if the supply pressure is too low, the two inductances L<3>, L<4> being in either the primary or secondary circuits. Fig. 3 (cancelled) shows two-phase transformers D, D<1> with condensers C, C<1> in the outer conductors of the secondary circuit and discharge gaps G, G<1> and inducing coils 0, O<1> connecting the outer and common conductors. A single inducing coil in the common conductor may, less advantageously, replace the two coils shown. Both inducing coils mav surround one crucible. Variable inductances may be placed in the primary circuits A, B for current regulation. This subject-matter does not appear in the Specification as accepted.
Patent GB-328708-A (GB)
Title: Photographic apparatus for developing sensitised strips
IPC: G03D13/14
Filed: 1929-02-14
Abstract: 328,708. Josepho, A. M., and Multipose Portable Cameras, Ltd. Feb. 14, 1929. Developing-apparatus for roll films.-In apparatus comprising a drum rotatable in a light-tight casing and adapted when rotated in one direction to wind the film and in the reverse direction to separate the convolutions of the film and permit free access of the treating liquid, the end of the film is passed through a passageway in the drum into a chamber adapted to receive the driving spindle, the latter gripping the end of the film. In an embodiment, a drum 10 is rotatably mounted in a cylindrical casing A having lighttight inlets 1 and 6 through which developing liquid may enter. The drum 10 has an angular central chamber. The film strip is passed into the chamber through a passageway 10<x> and gripped by an angular spindle 12 having a tapered end corresponding with the tapered wall of the drum chamber. Means for limiting the number of rotations of the drum in each direction comprises a timing screw 18 slidably mounted on the spindle 12. Pivotally mounted on the top of the casing A are two halves 14, 14<x>, Fig. 9, of a cam sleeve. The two halves are held together by a rubber ring 17 so that their inner walls form a threaded bore to engage the timing screw. The latter rotates with the spindle 12 and has an up and down motion limited by the engagement of a contact head 18x on the timing screw with projections 15x and the base 14, 14x of the cam sleeve. In operation, the halves of the cam sleeve are drawn apart. and the spindle 12 and timing screw 18 removed. The exposed strip is passed from a container E through a light-tight slot 22 in the casing A into the central aperture of the drum. The spindle 12 is reinserted and rotated by the thumb wheel 19, causing the timing screw to descend by engagement of its thread with the thread on the cam sleeve, the contact head 18<x> pushing aside the halves of the cam sleeve and passing below the projections 15<x>. The film is thus wound on the drum 10, the free end being gripped by a spring clasp. The developer may then be immersed in one of a. series of liquid-containing cups.
Patent GB-184507-A (GB)
Title: An improved process and apparatus for recovering by-products from distillate gases
IPC: C10K1/04
Filed: 1921-02-12
Abstract: 184,507. Roberts, A. Feb. 12, 1921. Ammonium sulphate.-In a condensing plant for treating coke oven gases, the gases after condensation of heavier hydrocarbons are passed at a temperature sufficiently high to prevent condensation cf water through anammonium sulphate saturator having a series of baffles 50 extending nearly across alternately from opposite sides. A c i d is supplied through a pipe 52 and the gases are passed upwardly from the inlet 48 to the outlet 49, and the sulphate crystals collect in a hopper 53 from which they are withdrawn to be drained &c.
Patent GB-105125-A (GB)
Title: Improved Machine for Mixing Dough & other Substances.
Inventor: HALL JOHN
IPC: B01F7/00
Filed: 1916-04-07
Abstract: 105,125. Hall, J. April 7, 1916. Stationary batch-mixers with rotary stirrers.- In a machine fpr mixing dough &c., of the kind comprising a tiltable container with a revolving shaft carrying a series of beaters arranged angularly around the shaft, the beaters 6 consist of tapered radial stems 10 with teeth 11 at rightangles to the stems and inclined to the axis of the shaft 3, and means such as brackets or combs 7 are arranged between the beaters to drag the dough &c. off the beaters as they revolve. The combs 7 may have teeth or projections and are secured at one end to the container 1 and embrace the shaft 3 at the other end. Projections are provided on one side only of the end beaters 12, the stems of which are bevelled and work close against the ends of the container. Stops, consisting of pivoted catch-plates on the standards 5 adapted to engage projections on the ends of the container, are provided to hold the container stationary during the mixing process. The container has splayed sides and a rounded bottom 2.
Patent GB-1106781-A (GB)
Title: Improvements in or relating to recording and/or playback systems
IPC: G11B5/127
Filed: 1965-02-05
Abstract: 1,106,781. Magnetic heads. IIT RESEARCH INSTITUTE. 5 Feb., 1965 [11 Feb., 1964], No. 5182/65. Heading G5R. A playback head 150 has two output windings, the low-frequency winding 161 having more turns than the high-frequency winding 166. The low-frequency winding 161 may be provided with a partial magnetic shunt 170. The head may be used also for recording, the two windings being connected in series during playback and in parallel during recording. A longitudinal composite audio-video track (Fig. 1) is produced on a tape by means of a composite audio-video head (Fig. 2), the magnetic fields being longitudinal for the video track and transverse for the audio. Reference has been directed by the Comptroller to Specification 998,272.
Patent GB-1074702-A (GB)
Title: Improvements relating to controlled transformers
Inventor: HUTCHINS ROY
IPC: H01F29/14
Filed: 1964-02-07
Abstract: 1,074,702. Transformers. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 5, 1965 [Feb. 7, 1964], No. 5278/64. Heading H1T. [Also in Division H2] The output of secondaries S1, S2 (Fig. 2) is controlled by means of current in the control winding common to the two cores shown, the windings being so arranged that, if the control winding becomes short-circuited, opposing voltages develop therein due to linkage with the shunting core limbs E1F1, E2F2 and the primary flux passes through these shunt limbs by-passing the limbs carrying the secondary windings S1, S2. A modified arrangement is described (Fig. 5, not shown) incorporating two five-limbed cores with one of two common control windings supplemented by a further winding fed back through a rectifier bridge from series connected secondaries (see Division H2).
Patent GB-720586-A (GB)
Title: Improvements in or relating to the production of oxazolidones
Filed: 1953-02-25
Abstract: Oxazolidones-2 of the general formula <FORM:0720586/IV (b)/1> in which each of the symbols R and R1 represents hydrogen or a substituted or unsubstituted hydrocarbon radical are prepared by reacting an alkaline bicarbonate with an alkaline salt of an acid sulphuric ester of a substituted or unsubstituted ethanolamine.  The term "alkaline" here includes ammonium.  The salt of the acid sulphuric ester of ethanolamine may be formed in situ by neutralizing the acid ester with free alkali or an alkaline carbonate or bicarbonate.  The reaction takes place in aqueous solution by heating slowly, e.g. to 40 DEG  to 70 DEG  C., and maintaining this temperature for 12 to 24 hours.  Separation of the oxazolidone may be effected by filtering off the crystals of alkali sulphate which are formed, evaporating the solution to dryness and extracting with a solvent such as alcohol, benzene, dichlorethane or dichloroethylene. In examples (1) the acid sulphuric ester of ethanolamine dissolved in aqueous caustic soda is heated with sodium bicarbonate; (2) the acid sulphuric ester of ethanolamine is dissolved in aqueous ammonia and heated in a current of carbon dioxide; (3) the acid sulphuric ester of ethanolamine dissolved in water and potassium carbonate is heated with the addition of a supplementary addition of potassium bicarbonate; (4) the acid sulphuric ester of ethanolamine is heated with water and sodium bicarbonate; (5) the acid sulphuric ester of ethanolamine dissolved in sodium carbonate and water is heated with sodium bicarbonate; (6) the acid sulphuric ester of N-methylethanolamine is heated with water and sodium carbonate to give N-methyloxazolidone; (7) the sulphuric mono-ester of diethanolamine is dissolved in aqueous ammonia and carbon dioxide passed in while heating to give N-ethanoloxazolidone; and (8) the acid sulphuric ester of N-phenylethanolamine dissolved in soda lye is heated with sodium bicarbonate to yield N-phenyloxazolidone.
Patent GB-918153-A (GB)
Title: Process for polymerizing fluorine-containing olefines
IPC: C08F2/18
Filed: 1959-02-16
Abstract: The suspension polymerization of fluorine containing olefines is carried out in the absence of oxygen and in the presence of 0,004 to 0,0001% by weight of the liquor of at least one anionic surface-active perfluoro- or perfluorochlorocarboxylic acid and/or a water-soluble salt or mixture thereof.  The process is applicable to the homopolymerization of tetrafluoroethylene or trifluorochloroethylene and to their copolymerization with each other or with vinylidene fluoride and may be effected continuously or discontinuously.  The final ratio of liquor to polymer is preferably between 1 and 6 to 1.  The pH of the liquor may be between 2,5 and 12, preferably just over 7, and may be adjusted by ammonia, a phosphate or borax as buffer.  Suitable catalysts are organic and inorganic peroxidic compounds, e.g. persulphates, percarbonate, perborates, hydroperoxides such as t-butyl or t-aryl-hydroperoxide, or peracteates such as butyl peracetate in amounts of 0,001 to 5 wt. per cent of the monomer; redox catalysts such as bisulphites and thiosulphates; and multivalent metals, e.g. iron or copper or their water-soluble salts, e.g. iron sulphate, citrate or tartate and copper sulphate or chloride. Preferred reaction conditions are 2 to 100 atmospheres gauge and 10 DEG  to 150 DEG C.  Specification 795,513 is referred to.
Patent GB-1095236-A (GB)
Title: N-carboxyalkyl-(2-methylene alkanoyl) aniline derivatives
Filed: 1965-02-08
Abstract: Novel compounds of the formula <FORM:1095236/C2/1> wherein R is C1- 5 alkyl, cyclo-alkyl, trihalo-methyl-C1- 4 alkyl or a phenyl or phenyl-C1- 5-alkyl group optionally bearing halogen or C1- 5 alkyl or alkoxy substituents on the phenyl ring; R1 is H, C1- 5 alkyl or C1- 6 alkanoyl; X is H, halogen or C1- 5 alkyl or two X radicals on adjacent atoms of the benzene ring may together form a divalent 4 carbon atom hydrocarbon radical, e.g. -CH=CH-CH=CH-, m=1-3 and n=1-5, and salts, esters and amides of these compounds are made by reacting a Mannich base of the formula <FORM:1095236/C2/2> wherein R2 and R3 are C1- 5 alkyl groups or NR2R3 forms a heterocyclic ring and HA represents an acid capable of forming salts with amines, with a base, e.g. aqueous NaHCO3, and, if required, esterifying, e.g. by reacting with an alcohol or by forming the acid halide and reacting with an alcohol, or converting to the amide by reacting the acid halide or an ester with ammonia or an amine.  Preferred products comprise N - 4 - (2 - alkylacryloyl) phenyl - glycines and N - 4 - (2 - alkylacryloyl) phenyl - alanines optionally bearing halogen or alkyl substituents on the phenyl nucleus.  Mannich compounds of Formula II are made by condensing the appropriate N-carboxy-alkyl - 4 - C2- 7 alkanoyl - aniline or its N-acyl derivative, with formaldehyde or paraformaldehyde and the acid addition salt of a secondary amine.  N - Carboxyalkyl - 4 - C2- 7 alkanoyl anilines are made by reacting an N-alkanoyl aniline, optionally bearing substituents corresponding to X1, with an alkanoyl halide R.CH2COHal. in the presence of AlCl3 to give a 4-alkanoyl-acylanilide hydrolysing to form a 4-alkanoyl aniline, reacting with a haloalkanoyl ester Hal.CnH2n.COOAlkyl and hydrolysing the resulting N-carboxyalkyl-4-alkanoylaniline ester.
Patent GB-176001-A (GB)
Title: Method of assembling, securing and fastening by means of screws and nuts
IPC: F16J1/00
Filed: 1922-02-24
Abstract: 176,001. Soc. Alsacienne de Constructions MÚcaniques. Feb. 28, 1921, [Convention date]. Screws, inserting.-A nut for securing pistons, cylinder covers, parts of hydraulic presses, &c. to screw-threaded rods &c. is locked by a number of screws F disposed around the central hole. In cases where the work is difficult of access, a detachable collar H, having holes corresponding with those for the screws F, may be provided to centre a screw-driver J.
Patent GB-1059035-A (GB)
Title: Breathing apparatus for submarine diving
IPC: B63C11/24
Filed: 1964-02-11
Abstract: 1,059,035. Breathing apparatus. B. PALANDRI. Feb. 11, 1964 [Feb. 11, 1963], No. 5572/64. Heading A5T. A breathing apparatus for submarine diving, comprises a mask 12 and a lung bag 10 which receives breathing mixture from cylinder 11 via control means, and exhaled gas via conduit 13, and which contains means 15 for removing carbon dioxide from the exhaled gas, and device 17 which meters oxygen supplied by cylinder 18, into the bag and mixes it with the breathing mixture and exhaled air, the oxygen containing mixture being inhailed via conduit 16. The device 17 meters the oxygen into the bag in a quantity corresponding to the intensity and frequency of the breathing functions. The supply of oxygen to the device 17 is controlled to correspond with the various conditions met in diving procedures. In one embodiment the oxygen is supplied from cylinder 18 to jacket 22 forming a second lung bag, which is connected to device 17 by duct 24. A valve 23 controls the passage vent of duct 24 to change the oxygen flow therethrough depending on the diving depth. In another embodiment (Fig. 2, not shown), the oxygen is supplied to device (17) via an equalising and metering device (220) which acts by varying the pressure of the oxygen delivered from the cylinder (18) in such a way that the oxygen pressure downstream of the equaliser is equal to the gas pressure of the lung bag (10). The supply of mixture from cylinder (11) to bag (10) may be controlled by a device sensitive to the barometric pressure. The bag 10 may provided with valves 27, 28 to vent the bag.
Patent GB-548976-A (GB)
Title: An improved check-freed cabinet for dispensing oil or other liquids
IPC: G07F13/00
Filed: 1941-04-30
Abstract: 548,976. Check-freed vending machines. LOWE, A. M. April 30, 1941, No. 5590. [Class 27] Relates to a cabinet for storing and vending oil and other liquids as described in Specification 500,744, in which oil is delivered by a pump 18 from a tank 19 through key-controlled taps 15 to various-sized measures A .. F, each measure being enclosed in a separate compartment 5 closed by a sliding door 11. According to the present invention each door 11 is normally locked but is freed when a coin or check is inserted in a corresponding slot 27, a separate slot and shoot 30 being provided for each compartment 5, and each check after freeing its door passing down its shoot to the corresponding compartment of a till or drawer 37. Thus, the checks found in the till constitute a reward of each oil measure sold, i.e. so many pints, quarts, &c. of each grade of oil. Each check, as it passes down its shoot actuates a corresponding lever 36 which releases a cam 35 and allows a spring to lift a detent 34 and release a door catch 33 to allow the door 11 to be raised. When the measure has been emptied and replaced the door is automatically relocked until released by another check or coin. The keys for opening the oil taps 14 are inserted through keyholes 12 and can only be inserted when the doors are closed. Coin-slit closing devices.-A sliding shutter 28 controlled by a lock 32 is arranged behind the coin slots 27 and is formed with one slot for each coin slot, so that when the shutter is in one position all the coin slots are open and when in another position they are all closed.
Patent GB-395987-A (GB)
Title: Improvements in or relating to heel treads for boots and shoes
IPC: A43C13/02
Filed: 1933-02-23
Abstract: 395,987. Heel tips. STœBBE, F., Vlotho-on-Weser, Germany. Feb. 23, 1933, No. 5597. Convention date, June 17, 1932. [Class 17 (iii).] A heel tip a of rubber has a flat integral tongue c of the same shape as the heel and with the lateral edges bevelled to diminish in thickness outwardly to be engaged and concealed by correspondingly bevelled edges on a tread of rubber, wood, leather, &c. which is applied over it. The bevelled edge on the tread may be formed by securing a bevelled strip on its inner face around the back and sides. The abutting side of the tread and heel tip are of corrugated form, as shown, to avoid acute angles where the tread is greatest.
Patent GB-525386-A (GB)
Title: An improved beacon system
IPC: E01F9/619
Filed: 1939-02-20
Abstract: 525,386. Electric incandescent lamps. HOLOPHANE, Ltd., and ENGLISH, S. Feb. 20, 1939, Nos. 5619 and 19447. [Class 39 (ii)] [Also in Group XL] One or a number of lenses 1 have a backing 3 of luminescent material responsive to ultraviolet rays, the light obtained being visible substantially only along the line of the incident rays. The U.V. rays may be obtained from a discharge tube or a lamp using light-filters such as Woods glass. With an incandescent lamp a compound filter is used made of a weak Woods glass filter and coloured blue green glasses containing copper oxide or copper and cobalt oxides. One part of this filter may form the envelope of the lamp, the other being a separate glass; the Woods glass filter may be dispensed with if a little light other than U.V. is permissible from the lamp. The system is of use as (1) a direction indicator (2) a landing light in aerodromes (3) on ships docks or sides to be picked up by lights on other ships and (4) for gun sighting. Messages or signs may be given by means of 'the luminescent material. Reference has been directed by the Comptroller to Specification 519,901, [Group XL]
Patent GB-856836-A (GB)
Title: Improvements in or relating to fire extinguishing powders
IPC: A62D1/00
Filed: 1958-02-21
Abstract: A dry fire-extinguishing powder consists predominantly of sodium bicarbonate capable of passing 200 mesh and up to 10% by weight thereof of an organic wax which is a synthetic condensation product having a molecular weight of about 650 and which is capable of passing 400 mesh.  The organic wax preferably has the composition 78.75% carbon; 11.78% hydrogen; 5.0% oxygen and 4.47% nitrogen.  The powder may also include 0.5-4.5% by weight of the bicarbonate of silica aerogel or calcium phosphate capable of passing 200 mesh, in which event adhesion of the wax to the bicarbonate is enhanced by milling these substances together before addition of the silica or calcium phosphate to the mixture.
Patent GB-248398-A (GB)
Title: Improvements in and relating to electrical condensers
IPC: H01G4/255
Filed: 1926-03-01
Abstract: 248,398. Dubilier Condenser Co. (1925), Ltd., (Assignees of Deventer, H. R. van). Feb. 28, 1925, [Convention date]. Condensers of the fixed type are made so that their capacity is adjusted to the right setting preparatory to leaving the factory and, when once set, is not intended to be changed. The circular plate 1 is apertured centrally at 2 and radially at 3 at an equal distance from the centre and at an equal distance apart. The periphery is slitted and the sections are bent alternately from side to side to form flanges 5, 6, one of which has an elongation 7 serving as a terminal. The flanges locate and protect the dielectric discs 9 having a central aperture 10 registering with the aperture 2. Bearing against the discs 9 are concave plates 11 having apertures 12, 13 corresponding with those 2, 3 and the whole is secured by a rivet 14 carrying a washer 15, the rivet 14 being turned over a terminal 16 so as to compress the concave plates. Maximum capacity is obtained when the apertures 3, 13 are in alignment, and other settings are obtained by more or less misaligning them by inserting a tool in the open. ings 13 of one or both plates 11 and turning them to the required extent.
Patent GB-384287-A (GB)
Title: Method of producing vitamin-containing beverages, in particular vitamin-containing beers
IPC: C12C5/02
Filed: 1931-02-24
Abstract: A beer which conditions rapidly and keeps well is obtained by adding vitamines to the beer during the secondary fermentation. Yeast is ground in a colloid mill so that the yeast cells are destroyed or separated and this ground yeast or the sap separated therefrom is added to the beer.  Specifications 367,909 and 368,919 are referred to.
Patent GB-1535618-A (GB)
Title: Electromagnetic relays
IPC: H01H50/30
Filed: 1977-02-11
Abstract: 1535618 Relay armature control SIEMENS AG 11 Feb 1977 [31 March 1976] 05811/77 Heading H1N An arrangement for limiting the vibration of an armature 9 on relay de-energization has a back-stop formed as a flexible strip 1 arranged to flex as the armature extensions 10 engage sides 2, 3 of the strip and also provide frictional damping as projections 6 rub on ceramic bars 4 on which tongues 5, 5 of the strip 1 engage. An extension 8 is secured to the armature and acts as its biasing spring.