baber/WOPTO huggingface dataset:
Patent GB-567370-A (GB)
Title: Improvements in or relating to methods of polishing articles
IPC: B01J31/12
Filed: 1943-02-23
Abstract: 567,370. Abrasive materials. BALZ, W. G., and DAVIDSON, L. R. Feb. 23, 1943, No. 2970. [Class 91] The materials of Specification 564,898 are used in the tumbling method of polishing articles. The method may include a preliminary roughening treatment.
Patent GB-1451133-A (GB)
Title: Method of open-end spinning yarn from staple fibres in a rotary  spinning chamber
IPC: D01H4/08
Filed: 1974-01-22
Abstract: 1451133 Open end spinning VYZKUMNY USTAV BAVLNARSKY 22 Jan 1974 [2 Feb 1973] 03015/74 Heading DID In a method of open-end spinning of staple fibre yarns in a spinning chamber rotating at an operational speed of more than 60,000 r.p.m., the yarn being withdrawn through a withdrawal channel, the max. radius r K  of a fibre collecting surface of the chamber is limited by the relation where and by the relation In these relations:-n K  is the chamber rotation speed; e is the base of natural logs; Á P  is the average yarn friction coefficient in the withdrawal channel; α c  is the total angle of arcuate contact of the yarn with a curved surface or surfaces in the withdrawal channel, measured about on axis or axes transversely of the yarn; R P  is the average tenacity of yarn made from a lowermost tenacity material which is still processable in the apparatus; S RP  is the standard tenacity elevation of the yarn; #= 5.73; H varies between 1.5 and 3.0; and l K  is the length of yarn laid before piecing on the collecting surface. The product Áp. αc may vary between 0.3 and 0.8, and the chamber may rotate from 70,000 to 110,000 r.p.m., where r K  varies from 13 to 19mm. During yarn piecing, the yarn reverse speed V z  is lower than the yarn withdrawal speed V r  and r K  has the relation where and varies between 0.1 and 0.5.
Patent GB-121856-A (GB)
Title: Improvements in the Production of Milling Cutters.
Inventor: HIGGINSON JOSEPH
IPC: B23P15/34
Filed: 1918-02-20
Abstract: 121,856. Higginson, J., and Arundel, H. Feb. 20, 1918. M i l l i n g screws; lathes.-Relates more particularly to the making of cutters for milling screw-threads in stages or cycles, and consists in means for feeding the blank between such stages or cycles, such means being arranged if neces. sary to compensate for variations in the cutter due to heat-treatment after being cut. The work is carried by a spindle a, which is rotated by worm gearing, and at the end of each revolution is fed axially to bring a fresh portion of the blank under the milling- cutter. On a reduced part of the spindle a is a screwed sleeve c engaging a fixed nut s and having secured to or made integral with it a disk h on which is mounted a pulley driven by a belt from a pulley connected to its driving shaft v by a slipping-clutch d. In a disk h is a notch g which engages a pawl f to hold the disk and sleeve c stationary except when raised at the end of each revolution of the worm wheel. The pawl is mounted on a spindle j having at its other end an arm i which is raised to disengage the pawl by a pin k in an arm m carried by the worm wheel. The arm m is held against a stop o by a spring and, when the pin engages the arm i, the arm m rotates until arrested by a stop p. The pin k then raises the arm i, whereupon the spring pulls the arm m against the pin o ready for the next movement. The movement of the disk h may be retarded before the pawl f acts, by a second pawl r which engages the notch g and is pulled round against the action of the spring t attached to one arm of a ring on which the pawl r is mounted. The pawl f can be set out at an angle to the disk by an adjusting-screw q so that the point at which the disk is stopped may be altered to allow for the heat treatment referred to above. As the disk and sleeve move endways a rod 2 which bears on the disk also is moved endways to bring a collar 4 in contact with a lever 5 when the blank is finished. This lever is thus actuated to free the drop worm-box 8 and start the machine. The knock-off gear may be similar to that described in Specification 104,281.
Patent GB-1144621-A (GB)
Title: Cleaner for threshed material
IPC: A01F12/44
Filed: 1968-01-19
Abstract: 1,144,621. Combine harvesters. GEBR. GLAAS. 19 Jan., 1968 [14 Feb., 1967], No. 3073/68. Heading A1F. A cleaner for threshed material comprises two screens 25, 26, a blower (24), Fig. 1 (not shown) for directing an air blast on to the undersides of the screens across their whole width, lengthwise upright walls 34, 35, 36, 37 attached to the screens and to the discharge floor 28 below and members 40, 41, 42, 43 for guiding the aid blast to the undersides of the screen. The guide members spaced at different levels are arranged behind each other in pairs below each screen. They have a flat rhomboid or drop shaped profile and slope upwards towards the undersides of the screens. The cleaner forms part of a combine harvester, the threshed material being fed to the cleaner from the discharge end of the preparation floor 22, Fig. 1 (not shown).
Patent GB-577613-A (GB)
Title: Improvements in or relating to electric resonators
IPC: H01P7/04
Filed: 1944-02-18
Abstract: 577,613. Electric resonators. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING AKT.-GES. Feb. 18, 1944, No. 3082. Convention date, Feb. 18, 1943. [Class 40 (iii)] In a coaxial resonator, timing is effected by moving a rod 1 so as to vary the capacity between the flat parts and also the cylindrical parts of the condenser 6, 8, 9. The inductance of the rod 1 may be simultaneously varied by movement of a conductive sleeve 11, the screws 10, 12, having different pitches. The cylindrical web 8 may have a varying axial length, and two or more such webs having different ranges of length may be mounted on the flat plate 6, a corresponding number of folds being provided in the plate 9. The frequency limit may be preset by means of an adjustable capacitance, or of an adjustable inductance comprising a short-circuited ring of the kind described in Specification 513,970, or of movable end walls.
Patent GB-1380052-A (GB)
Title: Process for the application of a magnetic sound stripe to a motion picture film material
IPC: G11B5/702
Filed: 1971-01-25
Abstract: 1380052 Photographic film sound tracks AGFA-GEVAERT 10 Jan 1972 [25 Jan 1971] 3101/71 Heading G2E For the application of a magnetic sound track onto the anti-halation layer of a cine film, which is dispersed in an alkali-soluble binder, a coating composition of magnetizable material dispersed in an alkali-insoluble binder and a cross-linking agent for the anti-halation layer is used. (The use of polyazinidines, and mono-azinidine in combination with a cellulose ester support is disclaimed.) The cross-linking agents may include two or  more of the following groups (subject to the above disclaimer): azinidine, epoxide, aldehyde, acryloyl, methacrylol, soluble metal complexes, groups with reactive halogens (e.g. CH 2 Cl) and sulphofluorides. Specific compounds disclosed are: methacrylic and chromium chloride complex, m-benzenedisulphofluoride, octanedial.
Patent GB-1114978-A (GB)
Title: Improvements in the investigation of rock samples
IPC: G01N15/08
Filed: 1966-01-24
Abstract: 1, 114, 978. Investigating porosity. COMPAGNIE D'EXPLORATION PETROLIERE. Jan. 24, 1966 [Jan. 29, 1965], No. 3121/66. Heading G1S. A method of investigating the porosity characteristics of a rock sample for use in oil prospecting comprises saturating the sample with a first test liquid, subjecting the sample to conditions which simulate those of its natural environment, solidifying the first test liquid in the sample, saturating the sample with a second test liquid, solidifying the second test liquid and examining the distribution of the two solidified liquids in the sample. The first liquid such as a red resin is used to saturate the sample in a tube 3 mounted in a bucket 2 which is rotatable about axis 1. As centrifugal force is applied tc the bucket the first liquid is forced out of the sample through holes 5 to form a level H. The second liquid e. g. a blue resin is then applied to the sample and the process carried out as before. When the resins are set thin layers of the sample are cut off for microscopical examination.
Patent GB-507784-A (GB)
Title: Improved display stand
IPC: A47F7/17
Filed: 1938-02-02
Abstract: 507,784. Display stands. WHITBYS, Ltd., and SHIPWAY, S. P. Feb. 2, 1938, No. 3306. [Classes 52 (ii) and 52 (iii)] A display stand particularly for rolls of fabric &c. formed of metal tube comprises two V-shaped parts arranged to form the front and rear of the stand, with the upwardly extending limbs 1, 2 and 3, 4 connected together at their upper ends 5, and bracing members 9, 20 between both the front and rear and the ends of the stand, the junctures between the limbs 1 .. 4 and the cross pieces 6, 7 being shaped as curves 13 of substantial radius. The stand is built up of sections, the base comprising straight tubes 6, 7 the ends of which fit within T-pieces 8. for connection with the transverse braces 9 and the curved sections 13. Short lengths 10 of lining tube are fixed as by welding within laterally extending parts of the T-pieces and short wooden rods 12 driven into them before the application of the bracing tubes 9 over the lining tubes 10, and the parts are secured by a screw 21. The curved sections 13 have similar lining tubes 14 and wooden rods 15 for connection with the inverted V-shaped ends 1, 2 and 3, 4 and with the T-pieces. The upper parts 6 are connected to the bracing tube 20 by inwardlyextending liner tubes, and castors 17 are bolted through the T-pieces 8. Bearing supports for the rolled goods comprise lengths 22 of channel-section metal of which one or both side walls are formed with slots 23 and the bottom has lugs punched up upon which the rods 25 of the rolls rest. The channel walls converge inwardly to hold the rods 25 frictionally, and the channels are fixed to the uprights 1 .. 4 by wood-screws passed through holes in the uprights into the wooden rods 15 which extend to near the tops of the uprights. A shelf 28 in two hinged parts can be supported by hooks 29 from the slots 23.
Patent GB-486143-A (GB)
Title: Improvements in a machine for automatically manufacturing electric conductors havingair-space insulation and adapted for electrical communication
IPC: H01B13/06
Filed: 1937-02-05
Abstract: 486,143. Cables. YASUOKA, H. Feb. 5, 1937, No. 3451. [Class 36] Relates to a machine for making an air-space cable comprising a conductor 1, Fig. 1, carried centrally within a helical supporting member 2, which may be of bare or insulated wire, by an insulating string 3 which is wrapped around the conductor and the supporting member as shown. The machine comprises coaxial shafts 7, 23, 28, Figs. 3 and 5, mounted in bearings 8, 9 on a frame 35, the inner and outer shafts 7, 28 being driven in the same direction and at the same speed by pinions 10, 29, whilst the central shaft 23 is rotated in the opposite direction by a pinion 24. The conductor 1 is led through the inner shaft 28 and passes through the hollow bearing 40 of a rotary flyer 38 to a take-up drum, not shown. Rotatably mounted on the shaft 7, but acted upon by friction brakes 19, is a bobbin 6 carrying a supply of wire 45 from which the supporting member 2 is to be formed, the material passing over a pulley 17 carried by a frame 16 rigidly attached to the shaft 7 and being wound helically on the end portion 22 of the shaft 23 from which the helical member 2 so formed passes through a hole 32 in a guide plate 31 which is secured to and rotates with the inner shaft 28. The end portion 22 of the shaft 23 is surrounded for some distance by the reduced end portion 20 of the shaft 7 which is formed with a helical slot 21 for guiding the helical member 2 on the shaft 23. Rotation of the shafts 7, 23, 28 winds the material 45 into helical form whilst the guide 31 delivers the helical member from the end portion of the shaft 23. The flyer 38 carries a bobbin 44 of insulating thread 3 which is guided by a member 46 to a point adjacent the guide 31. The thread is tied to the end of the conductor projecting from the shaft 28 and the flyer rotated so that the thread is wound about the conductor and helical member 2, the thread being periodically deflected from one side to the other of the turns the helical member as the flyer rotates by a cam surface 33 on the guide 31.
Patent GB-876497-A (GB)
Title: Improvements relating to the stabilisation of developed silver halide photographic emulsions
IPC: G03C5/39
Filed: 1959-01-31
Abstract: 876,497. Photographic stabilizing processes and solutions. MASON & SONS Ltd., E. N. NORMAN, D. J., and LUNGLEY, P. G. Jan. 19, 1960 [Jan. 31, 1959], No. 3530/59. Class 98(2) A photographic process comprises the step of stabilizing a developed light-exposed silver halide photographic emulsion layer by treating it with a stabilizing solution containing both ammonium thiocyanate and ammonium chloride. The developed emulsion layer may be stabilized in the presence of, or when stabilized may be treated with an ascorbic acid (1- ascorbic acid or iso-ascorbic acid), or with a salt thereof, or with a mixture of said acids and/or salts, as described in Specification 875,878. The process may be used for the rapid stabilization immediately after development of photographic emulsions which contain a developing agent and are developable by the application of caustic soda.
Patent GB-738849-A (GB)
Title: Improvements relating to domestic fireplaces
Inventor: LATHE CYRIL
IPC: F24B1/189
Filed: 1953-02-09
Abstract: 738,849. Fireplaces. LATHE & CO., Ltd., C. Jan. 19, 1954 [Feb. 9, 1953], No. 3544/53. Class 126. A throat unit for a fireplace constructed of metal and having means for fitting the unit above a fireplace between the upper end of the fireplace and the lower end of the chimney is provided with a baffle adjustably mounted in the unit and capable of being retained in any one of a number of positions so as to vary the throat area. A metal throat unit comprises a flat back plate 11, a front plate 10 curved at the bottom and side plates 12 secured to lugs 15 on the back plate 11. A shelf 19 may be secured to the front plate to assist in building the surround, and horizontal plates are attached to flanges at the bottom of the side plates for building into the fireplace brickwork. The baffle plate 22 is carried. by pivot pins engaging open-topped trunnions formed in lugs 24 attached to the front plate. A lever 25, pivoted to a lug 26 on the baffle plate, is provided with a lug which engages notches 28 in a quadrant 29 formed on the front plate to hold the baffle in position. Stops 31 limit the closing movement of the baffle.
Patent GB-213067-A (GB)
Title: Improvements in collapsible seats
IPC: A45B5/00
Filed: 1923-02-07
Abstract: 213,067. Noirit, J. E. Feb. 7, 1923. Collapsable seats.-Relates to a method of connecting the seating fabric in seats of the type having two pivoted arms with flexible material extending between their free ends, and is shown applied to a stick seat. The pivoted arms 3 carry integral cross-bars 4 over which the reduced ends 14 of the flexible seating 5 are freely passed; these ends are fitted with rods 15 each carrying a stirrup 19 with a threaded nipple 22 engaging a screwed rod 18 pivoted to the stick head 2. A spring may be housed within the upper end of the stick to draw the centre of the seating fabric downwardly into its collapsed position. Specification 207,345 is referred to.
Patent GB-525874-A (GB)
Title: Improvements in and relating to colour forming developers and processes of colour development
IPC: G03C7/36
Filed: 1939-02-28
Abstract: 525,874. Photographic colour development. KODAK, Ltd. (Eastman Kodak Co.). Feb. 28, 1939, No. 3688/40. Divided out of 525,765. [Class 98 (ii)] A colour developer comprises an aromatic amino developing agent and a colour coup'er having the formula shown in Fig. 1, wherein C** represents a carbon atom in an aryl, aralkyl, or aryloyalkyl group, and C* represents a carbon atom in an alkyl group or in an aromatic nucleus. Examples of colour couplers are #- phenylacetylacetone, ethyl α-acetyl-γ-phenylacetoacetate, #-(phenacetyl)-acetophenone, 6- phenyl-n-hexanedione-2.4, 1:5-diphenyl-n-pentanedione-1:3, 1 - phenyl - 6 - methyl-n-heptanedione-3:5, and γ-phenoxybutyrylacetone. The reactive methylene group may have easily displaceable substituents such as halogen or carbalkoxy. The aromatic amino developing agents may be of the usual kind as specified in Specification 525,765. A suitable developing formula is given. The colour couplers may also be incorporated in the emulsion before or after exposure, and may be absorbed on the silver halide grains. The colour developer may be used in the formation of coloured images in plates, films, or papers having differently colour sensitized emulsions of the mixed-grain type or having differently colour sensitized emulsion layers superimposed on one or both sides of the support. Specifications 427,472, 427,516, 427,518, 427,520, 440,032, 440,089, and 447,092 also are referred to. The Provisional Specification describes also colour-couplers of the general formula in which Y may be aralkyl or alkoxy. An example given is 1-phenyl-4-ethoxy-n-butanedione 1:3. The colour coupler may also have the general formula where X is aryl substituted alkyl, aryl substituted alkyl or aryloxy substituted alkyl, and C+ is a carbon atom in an alkyl group or aromatic nucleus. X may be phenylmethyl, phenylethyl, phenoxymethyl, or phenoxypropyl. Additional examples given of colour couplers are 1-phenoxy-n-pentanedione-2:4, ethyl α-(phenoxyacetyl)-acetoacetate, 1-phenyln-hexene-1-dione-3:5, I-phenyl-n-hexanedione- 1:3, and 1-phenyl-n-pentanedione-2:4.
Patent GB-269828-A (GB)
Title: Improvements in the manufacture of electric incandescent lamps
IPC: H01K1/56
Filed: 1927-02-09
Abstract: 269,828. General Electric Co., Ltd., (Assignees of Patent-Treuhand-Ges. fiir Elektrische Gluhlampen). July 6, 1926, [Convention date]. Residual gases.-To facilitate the final evacuation of bulbs by strengthening the Edison effect in the ageing operation, an electron-emitting material, e.g. colloidal thorium oxide, is mixed with the usual "getter".
Patent GB-287842-A (GB)
Title: Improvements in and relating to roller weirs
IPC: E02B7/32
Filed: 1928-02-06
Abstract: 287,842. Maschinenfabrik Augsburg- N³rnberg Akt.-Ges. March 26, 1927, [Convention date]. Movable weirs. - A roller weir is made so that its moment of inertia is greatest when subjected to its greatest stresses, ior instance, the parts a, c are made of thicker plating than the parts b, d. In a modification, the roller is of metal of uniform thickness, the parts corresponding to the parts a, c being reinforced internally.
Patent GB-621233-A (GB)
Title: Improvements relating to annealing treatment of metal strip and wire
IPC: C21D9/56
Filed: 1947-02-07
Abstract: 621,233. Annealing. LUDLOW, J. H., and METROPOLITAN - VICKERS ELECTRICAL CO., Ltd. Feb. 7, 1947, No. 3740. [Class 72] In the continuous annealing of small section strip or wire the strip material is passed through a passage surrounded by an induction heating coil and thereafter through a cooling duct to a quenching bath, the passage being closed from the inlet end to a point below the surface of the quenching liquid and neutral or reducing gas being supplied or generated in the passage, the strip being cooled sufficiently in the duct to avoid hardening on.quenching. As shown, the strip passes into a refractory tube 4 surrounded by an induction coil 5, through a cooling duct 6 which may be jacketed into a quenching tank 9 and finally to a roll-up coil 17. Hydrogen or other gas may enter the duct through the tube 14 or a coating on the strip may be burned off to provide a protective atmosphere, the exhaust gas being burned or extracted by a fan.
Patent GB-576639-A (GB)
Title: Improvements in or relating to circuits for measuring electrical resistances in strain gauges
IPC: G01L1/22
Filed: 1944-02-29
Abstract: 576,639. Strain-gauges. AUGHTIE, F. Feb. 29, 1944, No. 3747. [Class 40 (i)] [Also in Group XXXVI] In an apparatus for remote indication of the change of value of a resistance, or of change of relation between two resistances, which may be an element or elements in a strain gauge, the variable controls the phase of an alternating output voltage with respect to a reference voltage, the change of phase being used as the indicator. A change in resistance R1, Fig 1a, causes the voltages across the resistance and condenser to change, thus altering the phase of the output 1 relative to output 2. The transformer shown may be replaced by a valve. Where the change of two resistances is to be measured, the resistances constitute two limbs of a circuit such as a bridge circuit, Fig. 2a, or a TT or T circuit or a bridged T or parallel T circuit. In the modification, Fig. 3 (not shown), the output from the bridge network is fed through an amplifier and a phase shifting circuit to the input, so that the apparatus forms an oscillator whose frequency is dependent upon changes of phase in the bridge circuit. The impedances in the bridge are so chosen that the feedback does not vary greatly, is sufficient to ensure oscillation, and is negative to minimise harmonics in the waveform. The frequency change produced can be altered by frequency conversion and multiplication and the outputs from a number of bridge circuits may be summed algebraically to a function, which may be non-linear and represents the several variable quantities. A series of variables may be transmitted through the same channel by multiway switching means. Specifications 560,260, and 565,462, [both in Group XXXVI], are referred to.
Patent GB-909254-A (GB)
Title: Dog engagement control mechanism
IPC: F16H3/12
Filed: 1959-02-03
Abstract: 909,254. Friction brakes. REGIE NATIONALE DES USINES RENAULT. Feb. 3, 1959 [Feb. 10, 1958], No. 3794/59. Class 103 (1). [Also in Group XXIV] A double dog clutch sleeve 25 in a forward- and-reverse gear is splined on a driving shaft 26 which on initiation of a shift is first arrested and then given a reverse rotation which results in the shifting of the clutch sleeve. On closing a switch to initiate a shift, a clutch 22 is disengaged and a brake 23, an electromagneticallyoperated valve is actuated, admitting pneumatic or hydraulic pressure to a servomotor 4 applying, the brake shoes 2, 3 of which are pivoted on a rocking plate 5 normally held by a spring 10 against a stop 9. The motion of shaft 26 rocks plate 5 against a stop 8, and after shaft 26 has been arrested, spring 10 returns the plate to its initial position, moving shaft 26 in reverse and, through a pawl 13, rotating a cam 14, thus closing electric contacts 16, 17 and thereby energizing an electromagnetic valve controlling a fluid-pressure servomotor effecting the required shift of the clutch sleeve.