baber/WOPTO huggingface dataset:
Patent GB-1073289-A (GB)
Title: A circuit for preoviding an output signal which reproduces the waveform of an input signal
IPC: H03F1/36
Filed: 1965-05-27
Abstract: 1,073,289. Amplifying circuits. ASSOCIATED RESEARCH LABORATORIES (PTY.) Ltd. May 27, 1965 [June 1, 1964], No. 22635/65. Heading H3T. [Also in Divisions G3 and H2] An arrangement for providing an output signal that reproduces the waveform of an input signal comprises a two-state level discriminator 12 which compares the input signal Si with a representative portion Sf of the output signal So; the output from the discriminator .12 causes alternatively two different voltages from a power supply 18 to be switched to a storage network 16, or it may switch a single voltage of a power supply 18 on and off by means of a switch 19. The output from the network 16 is applied to a load 14 and has a waveform the same as Si except for a superimposed perturbation which is dependent upon the switching frequency.
Patent GB-732066-A (GB)
Title: Improvement in method of making vitamin a aldehyde
Filed: 1952-09-10
Abstract: A hydroxy polyene acetal is converted to Vitamin A aldehyde by reacting with an ionizable acid, e.g. sulphuric, phosphoric, acetic, oxalic, hydriodic, hydrochloric or hydrobromic acid, and an organic base, e.g. pyridine, a -, b - or g -picoline, 1,2-, 1,3-, 2,4-, 2,6-, or 3,6-lutidine, aniline, quinoline, piperidine, aminopyridine, morpholine or dimethylamine.  The ionizable acid and organic base may be combined in the form of a salt, e.g. quinoline hydrobromide, quinoline hydrochloride, pyridine hydrobromide, pyridine hydrochloride or lutidine hydrochloride. The reaction may be effected at elevated temperature in a solvent such as an alkyl ketone.  As starting materials there may be used Vitamin A-3 : 7-diol acetals having the formula <FORM:0732066/IV (b)/1> wherein R is alkyl, the corresponding 3 : 6-and 3 : 5-diols, Vitamin A-3-hydroxy acetals having the formula <FORM:0732066/IV (b)/2> wherein R is alkyl, their 3-hydroxy desmotropic isomers and the corresponding 7-hydroxy compounds.  In examples the dimethyl acetals of the 3 : 7-diol and the 3-hydroxy compound are used as starting materials.  Vitamin A 3,7-diol acetals are obtained by condensing b -ionone with propargyl bromide, condensing the so-formed propinyl carbinol with a dialkyl acetal of b -ketobutyraldehyde and subjecting the resulting condensation product to hydrogenation to reduce the acetylenic linkage to an olefinic linkage.  Vitamin A 3,6-diol acetals are obtained by reacting a dialkyl acetal of b -ketobutyraldehyde with sodium acetylide, subjecting the resulting product to reaction with 4-(2,6,6-trimethyl cyclohexen - 1 - yl) - 2 - methyl - but-2-ene-1-al followed by hydrogenation.  Vitamin A 3,5-diol acetals are obtained by reacting b -ionylidene acetaldehyde with methyl magnesium bromide, oxidizing the carbinol thus formed, condensing the carbonyl compound with 4,4-dialkoxy-2-butanone and reducing the hydroxy keto Vitamin A acetal.  Vitamin A 3-hydroxy acetals are obtained by reacting b -ionylidene acetaldehyde with a dialkyl acetal of b -ketobutyraldehyde and reacting the resulting product with methyl magnesium bromide. Isomers of the formula <FORM:0732066/IV (b)/3> are obtained by reacting b -ionone with propargyl bromide, and dehydrating with hydrochloric acid the ethinyl carbinol thus formed. Vitamin A 7-hydroxy acetals are obtained by condensing propargyl bromide with a dialkyl acetal of b -ketobutyraldehyde, dehydrating, condensing the dehydration product with b -ionone and hydrogenating the acetylenic linkage.
Patent GB-974840-A (GB)
Title: Static discharger apparatus
IPC: B64D45/02
Filed: 1962-06-13
Abstract: 974,840. Static dischargers for aircraft. GRANGER ASSOCIATES. June 13, 1962 [July 31, 1961], No. 22772/62. Addition to 971,544. Heading H1X. A static discharger for aircraft or other vehicles, arranged to reduce noise pick-up in a radio antenna, as described and claimed in the parent Specification, comprises a large area base 13, Fig. 3, fixedly and electrically-connected to the vehicle, an elongated, insulating member 21 having a resistive coating, and removably secured to the base 13, and a conductive discharge pin 23 on member 21, which is electrically-coupled by the resistive coating and base 13 to the aircraft. As shown, insulating member 21, Fig. 4, is of nylon and is secured in a nickel-plated aluminium sleeve 16, which is removably secured to nickel-plated aluminium base 13 by screw 19. Insulating member 21 has a resistive coating of an epoxy base containing lamp black and graphite, a tungsten discharge pin 23 embedded therein, and a plastic end cap 25. In an alternative arrangement, conductive sleeve 16 is omitted, an elongated, insulating member 26, Fig. 7 being directly secured to base 29 by removable screw 31. Discharger bases may be riveted or secured by conductive adhesive to the trailing edges and tips of aircraft wings and stabilizers. U.S.A. Specification 2,933,732 also is referred to.
Patent GB-465554-A (GB)
Title: Process for obtaining cellulose from liquified cellulosic matter
IPC: H01G4/224
Filed: 1936-08-19
Abstract: In a process for obtaining from lignified cellulosic matter a cellulose which can be bleached in an exceedingly easy manner, the matter is treated for 8--18 hours at 105--106 DEG  C. with a lye containing, with respect to its total quantity about 6 per cent free SO2 and sodium bisulphite corresponding to 0,13--0,15 per cent sodium oxide, is thereafter mechanically transformed into pulp and subjected, while circulating through the stamp mill at a density of 5--8 per cent, to a current of gaseous chlorine conveyed into the pulp at the point where the latter receives the thrust of the propeller, chlorine being introduced until it is no longer absorbed by the cellulosic matter.  The material in suitable size is introduced into an insulated lixiviator, preferably adapted for circulation, submitted to the action of a current of steam and then rapidly cooled by circulation of cold water.  The water is pumped off and lye introduced.  The lye contains about 9 per cent SO2 together with the necessary amount of sodium carbonate so that with the water in the material, a composition of 6 per cent SO2 and 0,13--0,15 per cent sodium oxide is attained. The temperature is maintained at 105--106 DEG  C., the pressure being then reduced, the SO2 being recovered.  The material after washing is reduced to pulp by usual mechanical treatment and treated at a density of 5--8 per cent while being circulated in a stamp mill with gaseous chlorine supplied by a blower within the pulp at the point where the latter receives the thrust of the propeller.  The product is washed in the stamp mill or washer, and heated for about 1 hour at 65--75 DEG  C., in a liquid containing sodium carbonate and sodium sulphite in a total concentration of about 0,25 per cent.  It is then washed until neutral and may be bleached with a hypochlorite.
Patent GB-297942-A (GB)
Title: Improvements relating to appliances for sharpening the detachable blades of razors or the like
IPC: B24D15/08
Filed: 1927-08-31
Abstract: 297,942. Irwine, H. G. Aug. 31, 1927. Stropping - apparatus. - A device for sharpening razor &c. blades consists of a sharpening - roller a mounted in a frame b and rotated by a handle a<2>, the blade being mounted upon a support c which is pressed to move the blade against the roller. The roller is concave longitudinally and the blade, on being pressed against the roller, is flexed longitudinally, either alone or with the support, so that the blade contacts with the roller along its entire edge; a support c<3> is provided for single-edged blades.
Patent GB-1002489-A (GB)
Title: Improvements in or relating to devices for the dispensing of finely divided condimentor other culinary material
IPC: A47J42/40
Filed: 1962-06-14
Abstract: 1,002,489. Condiment holders. DE VECHT N.V. June 14, 1962 [June 19, 1961; March 13, 1962], No. 22857/62. Heading B2F. A device for dispensing pepper or other condiment comprises a body shell of rigid material, such as pottery or wood, and an insert of synthetic plastics material comprising two parts fixedly secured relative to the body shell, the two parts being joined together within the body shell and forming a wall of a chamber for containing the condiment. The body of a pepper mill is in two parts 1, 2 of porcelain. In an alternative construction the material is wood. To allow for size variation an insert container for the peppercorns to be ground and dispensed is telescopic, in two parts 3, 4 of synthetic plastic material. The milling mechanism 7, of known construction, is housed in the lower part of the device and the mill rotor 10 is fixed to the bottom of a shaft 11. The upper end of the shaft rotates in a bearing 19, in a cross member 20, and is retained by a collar 21. A plate 23 is screwed to the underside of the top 2 and has a square hole which mates with a squared portion 22 on the shaft whereby rotation of the top 2 operates the mill. The milling mechanism 7 is adjusted by a nut 24 screwed to the top end of the shaft. Removal  of the nut 24 enables the top 2 to be removed for filling the container. The nut is housed in a recess 24<SP>1</SP> to prevent accidental loosening. Alternatively the mill may be operated by a hand crank 27, Fig. 5. In this embodiment the container is filled through an opening in a closure plate 25 normally closed by a slide 26 and the milling mechanism is adjusted by a spring-loaded screw 32. A similar construction of body and insert container is used in a shaker, wherein the closure plate has shaker openings and the milling mechanism is replaced by a screwed closure plug.
Patent GB-293227-A (GB)
Title: Improvements relating to tensioning devices for chain driven mechanisms
IPC: F16H7/08
Filed: 1927-08-31
Abstract: 293,227. Morris Motors (1926), Ltd., Woollard, F. G., Pendrell, A. G., and Thomas, W. J. Aug. 31, 1927. Tension arrangements. - In chaintensioning devices for use with motorÀcycle engine chains &c., a tensioning-sprocket d rotates freely on a drum c carried eccentrically upon a stationary stud a to which it is connected by a torsion spring g, the tension being maintained by a ratchet detent, in which inclined teeth on the drum engage similar teeth i on a plate h splined on the stud a. Ratchet engagement is maintained by a spring j, which is of the torsion type if play is provided in the spline connection to permit the drum c to accommodate itself to irregularities in the working of the chain. In order to facilitate dismantling of the chain, a cam lever m is pivoted in a cap l secured to the plate h, so that the cam may be turned to abut upon the stud end and disengage the plate from the drum c. A removable cover-piece (not shown) for the lever m may be provided, the parts being so shaped that the cover-piece cannot be replaced unless the plate h is in active position. The ratchetreleasing device may be so modified as to move the drum c axially for disengagement.
Patent GB-919218-A (GB)
Title: A reciprocatory traverse mechanism
Inventor: JOULE RICHARD ANTHONY
IPC: F16H19/06
Filed: 1960-06-30
Abstract: 919,218. Converting rotary into reciprocating motion. FAN SYSTEMS Ltd. Oct. 2, 1961 [June 30, 1960], No. 22894/60. Class 80 (1). A fan unit 1, incorporating a fan 2 and motor 3, is supported on a cradle which is mounted on rollers 7 adapted to run along a monorail track 8, the drive being effected by a motor 11 mounted on the cradle and having a sprocket 13 which travels along first one side and then the other of a length of roller chain secured to the underside of the monorail. A frame 12, which supports the motor 11, is mounted between opposed springs 16, and spring-pressed V-shaped buffers may be located at the ends of the roller chain. The cradle is also guided by rollers 19, Fig. 4, mounted in adjustable eccentric bolts 18 and adapted to engage the edges of the monorail. In a modification, a friction drive is employed and comprises a friction roller 20, Fig. 8, made up of laminated discs 20a of friction material clamped between a hub 20b and a metal disc 20c, the roller engaging a friction strip 21 secured to a T-rail 22. In a further modification, the drive comprises an endless V-belt 23 (Fig. 10, not shown), engaged by a pulley 25. Specification 887,771 is referred to.
Patent GB-804490-A (GB)
Title: Improvements in refrigerators
IPC: F24F3/16
Filed: 1957-07-19
Abstract: The food storage compartment of a refrigerator is deodorized by an electric heater comprising a nickel chrome resistance wire coated with a layer of platinum, the platinum acting as a catalytic agent for the oxidation of odorous gases in the compartment.
Patent GB-225936-A (GB)
Title: Improvements in labyrinth gland packing
IPC: F16J15/447
Filed: 1923-09-12
Abstract: 225,936. Baumann, K., and Metropolitan-Vickers Electrical Co., Ltd. Sept. 12, 1923. Stuffing-boxes, substitutes for.-Packing for relatively rotating bodies comprises ribs relatively not liable to expansion on the one body co-operating with external cylindrical, conical, or partly cylindrical and partly conical members on the other body so arranged that if rubbing takes place the clearance is increased by expansion. The external flanges 3, Fig. 4, may be of angular section and may be secured in grooves 4 in the external part. Each flange 3 may be co-operate with a single rib 1 on the internal part and the latter may be of varying heights. Alternatively each flange 3, Fig. 6, may co-operate with two or more ribs 1 and may carry a flange 7 prujecting between the ribs 1. The flanges 3, Fig. 10, may be of U-section and may be arranged in pairs oppositely disposed. In a modification the flanges 3, Fig. 11, are formed on roots 8 slid into undercut grooves in the external part and may be conical, or of cylindrical form, as shown. Packing or springs may be placed in the recesses 10 at the back of the roots 8. Cylindrical parts 1, Fig. 19, carried by flanges 12 on the revolving part may co-operate with radial flanges 3 on the roots 8. Alternatively, conical ribs 1 on the flanges 12 may co-operate with the extremities of axial flanges 3 on the roots 8. The conical ribs 1 may be carried on conical faces of the flanges 12. The ribs 1 may be replaced by steps on the revolving part.
Patent GB-149961-A (GB)
Title: Improvements in controlling means for valves
IPC: F16K31/12
Filed: 1920-08-05
Abstract: 149,961. Aktiebaloget Vaporackumulator. Aug. 21, 1919, [Convention date]. Valves controlled by pilot or relay valves. - A valve device actuated by two different impulses, as for instance the pressures in the main conduit on the inlet and outlet sides, is arranged so that each impulse acts on its own relay, which relays influence separate distributing devices for controlling the mechanism operating the main valve. In the form shown, the main valve 2 is loaded by a spring 3 and is actuated by a pair of pistons w, w' acting through a lever 7 under the control of auxiliary valves C, C<1> controlled by further auxiliary valves B, B'. The principal auxiliary valves comprise a pair of pistons i, i<2> actuated by a diaphragm l against the, action of a spring m to connect the port u leading to the actuating- conduit o either to an inlet conduit h or an outlet k. Inlet pressure is admitted to the chamber r beneath the diaphragm l through a passage s and flows away through a conduit f, the outlet from which is obstructed by a plate e adjusted by a bellows c subject to the pressure in tne main conduit a. An increase of pressure in the main conduit moves the plate e in the valve B away from the conduit f and in the valve B' towards the pipe f. In a modification, the two pistons are connected by chains to toothed wheels on the main valve spindle. A single piston controlled by the single auxiliary valve actuated by a pair of diaphragms may be employed. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which the main valve is actuated by a single piston under the control of two diaphragm actuated auxiliary valves arranged in series. This subject-matter does not appear in the Specification as accepted.
Patent GB-245387-A (GB)
Title: Improvements in and relating to braces for men's wear
IPC: A41F3/00
Filed: 1925-09-17
Abstract: 245,387. Morgan, E. B. Sept. 17, 1925. Braces. - Braces consist of a single strip of rubber 1 folded midway between its ends and provided with a central row of perforations 8, and three fittings 5, 6 for the tabs provided with loops 7 embracing the strip, the length of which is adjusted by means of double-headed studs 9 passed through the perforations. The strip is also preferably provided with side. rows of perforations 1, a stud 9<1> being passed through two of these as shown. The fittings may be detached and the strip used as a belt.
Patent GB-649210-A (GB)
Title: Improvements in means for feeding bags, envelopes and sheets of paper to machines
IPC: B65H3/08
Filed: 1948-09-02
Abstract: 649,210. Feeding sheets. STRACHAN & HENSHAW, Ltd., and WILLS, S. C. F. Sept. 2, 1948, No. 23190. [Class 100 (i)] Paper bags and other sheets are fed to packing &c. machines from a pile 18 contained in a magazine formed of a bottom 14, end-plate 15, and a side-plate 13 mounted on a vertical pin 16 and moved towards a side-plate 12 by a spring 17. The bags are placed on edge with their folded edges outwards fan-shaped, and means are provided for gripping the end bag of the pack and drawing it laterally from the hopper. This means comprises a suction head 19 mounted for oscillatory movement about a horizontal axis 20 in a plane parallel to the side 12. The suction head is formed with a pair of suction-boxes 21 which engage the corner edges of the front bag of the pile, and then are rotated so as to bend back these edges in the form of ears, and the corner edges of the bag below the one engaged by the boxes 21 are engaged by clamp members 36 mounted on a vertical shaft 37. As the bag is being withdrawn by oscillation of the switch head 19, a separating blade 39 is depressed between the bag being fed and the next one to prevent double feed, and during the withdrawal of the bag it is supported by a plate 38 secured to the head 19 and arranged adjacent to the hopper plate 12. In a modification, Fig. 7, a fixed suction-box 43 is mounted on the suction head, and a pivoted suction-box 44 is used to withdraw a portion of the foremost bag by pivoted action and another suction-box 46 engages the sheet next to that withdrawn by the box 44 and acts to clamp the sheets while the box 43 laterally withdraws the endmost sheet after the suction in block 44 is released.
Patent GB-880125-A (GB)
Title: Improvements in or relating to granite substitutes
IPC: D21F3/08
Filed: 1959-07-07
Abstract: 880,125. Granite substitutes; plastic compositions. WALMSLEYS (BURY) Ltd., and OWEN, E. April 7, 1960 [July 7, 1959], No. 23238/59. Classes 22 and 87(2). [Also in Group VIII] Granite substitute is made by cold casting under pressure a setting mixture composed of natural granite particles and a synthetic resin cement. In particular a granite press roll for paper making machinery may be made by casting such a mixture on to a central core or roll former or existing rolls having cracks or worn portions may be repaired by casting a layer of the mixture over their damaged surfaces. Apparatus for this purpose is shown in Fig. 1, in a horizontal position, and comprises a roll former 10, to be mounted vertically during the casting operation in a stand (not shown) by the journal 11, and a base plate 12 from which extend guide members in the form of threaded shafts 13. The upper ends of these shafts 13 are received in the flange of collar 14 and held there by nuts 17 while studs 15 extending through the collar engage in tapped bores 16 in the end face of the former 10. An annular mould chamber 18, having an inner diameter corresponding to the desired outer diameter of the finished roll, has an outwardly directed flange 19 provided with clearance holes through which pass the shafts 13 so that the mould chamber 18 may slide along the shafts and be located in any desired position by suitable adjustment of nuts 21 and lock nuts 22. A compacting member 23 is also slidable along the shafts 13, nuts 24 being screwed down, once the annular portion of the compacting member comes into contact with the mixture in the mould chamber 18, so as to consolidate it and place it under considerable pressure, this pressure being maintained for sufficient time to enable the mixture to harden. The mixture preferably consists of a dry mixture of granite dust and acrylic resin powder to which a hardening agent is added. Once the first section of the roll is cast and set, an adhesive or jointing solution is applied to its exposed end face, the mould chamber 18 and compacting member 23 moved forward and the casting operation repeated. After the end section has been applied and set, the elements 12 to 23 are removed and the roll is dressed with a tungsten carbide tool and finished with coarse and fine grinding wheels.
Patent GB-1075261-A (GB)
Title: Vibration damper for machine tools
IPC: B23Q11/00
Filed: 1964-06-05
Abstract: 1,075,261. Machine tool damping. GIDDINGS & LEWIS MACHINE TOOL CO. June 5, 1964 [June 7, 1963], No. 23359/64. Heading B3B. In a machine tool such as a milling or boring machine 60 having a base 61 and a support 64A which includes a headstock 64 with a tool spindle 68, underarm spindle support members 69 and 70, a ram 67 for axially moving the tool spindle, a vibration damper 71 is positioned in the support member 69 which is substantially adjacent to the point of maximum deflection of the support due to vibrations set up when the machine is in operation. The damper includes an inertia member 42<SP>1</SP> carried on a rod 76 which is mounted by a resilient member 70 to the support 69. The inertia member which comprises a plurality of masses 72 is movable by screw means 84 so that its position can be adjusted and the natural frequency of vibration of the damper may be tuned to damp the vibrations set up in the machine support during the operation of the machine. In an alternative arrangement the damper is mounted in vertically extending rams (103), Fig. 3 (not shown), on a vertical boring mill (90) the inertia member being displaceable therein by a wire and ratchet mechanism, Fig. 5 (not shown), so that the frequency of vibration of the damper may be tuned to damp the vibrations set up in the machine during its operation.
Patent GB-1466673-A (GB)
Title: Heat-sealing superimposed layers of sheet material
IPC: B29C65/10
Filed: 1973-05-16
Abstract: 1466673 Seaming non-metallic sheet material WHITEHALL MACHINERY Ltd 14 May 1974 [16 May 1973] 23438/73 Heading B5K [Also in Division B8] The open mouth of containers such as bags or sacks 32 are closed by gripping the containers adjacent their mouths by co-operating endless chains 10, 12 and passing the containers through a first station at which the mouths are opened by external vacuum plate 14, a second station at which a nozzle 18 supplied with heated air is swung into the open mouth to heat soften the internal surface of the mouth and a third station at which the mouths pass between a pair of pressure rolls 24 which effect the sealing. At the second station the mouths are externally supported by support plate 16. Movement of the nozzle into and out of each mouth is controlled by a pair of switches one of which is actuated by the leading edge of the container and one of which is actuated by its trailing edge. The nozzle is provided at least on its leading and trailing faces with apertures so that gas is directed into the folded leading and trailing ends of each container as the nozzle is inserted and withdrawn, thus ensuring adequate heating and thus adequate sealing of those regions. The nozzle may include a central region having lateral vacuum apertures intended to remove any particulate matter and to enhance hot air circulation. Cooling devices may be provided to ensure rapid cooling of the sealed areas.