baber/WOPTO huggingface dataset:
Patent GB-422680-A (GB)
Title: Improvements in apparatus for grinding, refining and hydrating fibrous substances
IPC: D21B1/06
Filed: 1934-06-09
Abstract: 422,680. Mechanical treatment of paper pulp. ATELIERS NEYRET BEYLIER, La Croix-Rouge, Grenoble, IsÞre, France. June 9, 1934, No. 17147. Convention date, June 9, 1933. [Class 96] In an apparatus for grinding, refining, and hydrating fibres of wood, cotton, flax, alfa, hemp &c. for the manufacture of paper, cardboard &c., thick pulp is compressed repeatedly between two rollers rotating at high speed, the pulp being violently dried and dishevelled by the water driven through it by the rollers. The pulp, on entering a hopper 1, Fig. 1, may be diluted with water from a pipe 2 and is repeatedly raised by a cylinder 20, Figs. 1 and 3, and falls between the two rollers 3, 10 which may rotate at different speeds and which are adjustably pressed together by screws, levers, compressed air &c. The pulp is scraped at 23 from the rollers 3, 10, and is progressed towards the exit 25 by vanes 24, the inclination of which may be adjusted individually or collectively, or the cylinder 20 may be inclined. The cylinder 20, which may be of metal, and may be lined with cement or glazed tiles, is rotated by rollers 26 which may be toothed to vibrate the cylinder. The rollers 3, 10 may be smooth or toothed with crossed or parallel grooves, or have the first portion fluted, and may be fed by a travelling belt &c. instead of by the cylinder 20.
Patent GB-1581323-A (GB)
Title: Removing and cleaning of crockery
IPC: A47L15/24
Filed: 1978-05-02
Abstract: In order to guarantee sorting of the disposable items of crockery (2) placed among the reusable items of crockery (3) safely and reliably without manual intervention, both the reusable items of crockery (3) and the lighter disposable items of crockery (2) are freed from sticking remains of food and liquid by means of compressed air. The lighter disposable items of crockery (2) are then raised from the roller conveyor (1) likewise by means of compressed air, and simultaneously blown off to the side. On the way to the washing chamber, the roller conveyor (1) is assigned on the upper side a compressed-air nozzle system directed onto the crockery (2, 3), adjoining which compressed-air nozzle system there is an underside compressed-air nozzle system (5) serving for raising the disposable items of crockery and a lateral compressed-air nozzle system (6) serving for blowing the disposable items of crockery (2) away from the roller conveyor (1). <IMAGE>
Patent GB-863613-A (GB)
Title: Improvements in or relating to devices for producing an output signal proportional to the quotient of the amplitudes of two input signals
IPC: H04N5/202
Filed: 1957-05-30
Abstract: 863,613. Analogue electric calculating apparatus. PHILIPS ELECTRICAL INDUSTRIES Ltd. May 30, 1957 [June 2, 1956], No. 17205/57. Class 37. A device for producing an output signal proportional to the quotient of the instantaneous amplitudes of input signals A, B, comprises a generator 1 supplying carrier oscillations at frequency # to a 90-degree phase-shifting network 2 and a modulator 3 also receiving input signal A, the network 2 supplying a signal of frequency # + 90 degrees to a modulator 4 also supplied with input signal B, the two signals from modulators 3, 4 are vectorially summed in an adding means 5 to produce a signal C having a carrier oscillation of frequency # and phase angle α, A where tan a = -, A, B being the amplitudes of B signals A and B, the signal C being applied to a limiter 6 producing a signal C<SP>1</SP> of constant amplitude which is supplied to detector 7 synchronized to carrier oscillation # and serving to demodulate signal C<SP>1</SP>, the tangent of the phase angle between signal C<SP>1</SP> and signal from modulator 4 depending only on the ratios of the instantaneous amplitudes of signals A and B, so that the magnitude of the demodulated signal is approximately proportional to the quotient of the amplitudes of signals A, B. Attenuator 8 may proceed modulator 3 to reduce the amplitude of signal A at will, so that tan α is substantially the same as sin α. The output of detector 7, proportional to sin α, may be applied to a non-linear amplifier 9 having an amplification characteristic such as to produce a signal proportional to tan α. The carrier oscillation may be applied to detector 7 via a modulator 10 to which a third input signal F is applied, so that the resulting output of detector 7 is proportional to A x F / B In a detailed circuit diagram, Fig. 3, not shown, the synchronized detector 7 utilizes a junction transistor; and in the non-linear amplifier 9 two heptodes are bridge connected with a meter between the two anodes, the input grids of the first heptode being excited from sliders of parallel variable potentiometers energized from the output of detector 7. Attenuator 8 is switchably variable. Additional amplification stages are connected between modulator 3 and adding means 5, between means 5 and limiter 6, and between modulator 10 and detector 7. The device may be used in a colour television system for brightness correction or gamma correction of image signals to be transmitted.
Patent GB-1478830-A (GB)
Title: Vacuum mixing of concrete
IPC: B01F29/60
Filed: 1976-04-28
Abstract: 1478830 Mixing concrete CATERPILLAR TRACTOR CO 28 April 1976 [28 Aug 1975] 17248/76 Heading B1C Concrete ingredients including water in excess of the stoichiometric amount are agitated under a reduced pressure which is applied until a predetermined amount of the excess water is removed by evaporation. An apparatus may consist of a vehicle mixer having a rotatable drum 10 with fixed internal agitating blades 14. The drum is closed by a cover 20 having a part 24 connected to a vacuum pump 30.
Patent GB-292147-A (GB)
Title: Improvements in process and apparatus for the lathe turning of pieces whose cross-section has the form of an archimedes' spiral
IPC: B23G1/04
Filed: 1928-06-14
Abstract: 292,147. Soc. Francaise de Filetage Indesserrable D. D. G. June 15, 1927, [Convention date]. Lathes.- In a process for turning work-pieces having in cross-section the form of an Archimedean spiral, the tool carrier is guided by a portion of a helical screw thread which is rotated on an axis perpendicular to the lathe axis, the ends of the helical thread being joined so as to form a continuous guiding surface. The workpiece m is rotated between centres n<1>, n<2> and the spindle is connected through gears a, b, c telescopic universal shaft i and bevel gearing k to the guide p which is engaged by the rear end of the tool-holder s. The ends of the surface p<1>, which may be accurately produced on a lathe, are joined by a smooth curve q<1>. The speed ratios between the work and guide may be varied according to the work to be performed. Thus if the work and guide rotate at the same speed and the tool edge t<1> is parallel to the lathe axis, a work-piece having a uniform section as shown in Fig. 5 will be produced. If the guide rotates at three times the speed of the work, the profile shown in Fig. 6, will be obtained. The tool edge may be inclined at a variagle angle # to the lathe axis and in this case helical bodies having an Archimedean spiral section may be produced, the helical pitch depending on the speed of traverse of the slide Formulae and examples are given in the Specification for the production of work-pieces of various forms. The workpieces obtained in the above-described manner may subsequently be used as guides for the production of other work-pieces of similar form. Specifications 239,486 and 241,211, [both in Class 89 (i), Bolts &c.], are referred to.
Patent GB-722751-A (GB)
Title: Improvements in or relating to bending and cutting devices
IPC: B21F3/06
Filed: 1953-07-06
Abstract: 722,751. Shearing. DILNOT, H. S. July 6, 1953 [July 9, 1952], No. 17325/52. Class 83(4). A bending and cutting device for cutting lengths of spiral wire or strip stock includes a clamping means and a knife member movably mounted with respect to said clamping means, the arrangement being such that when a convolution of a spiral strip is located in the clamping means and the knife member is moved relatively to the clamping means, the knife member can first cut through the convolution and then bend over the end of that part of the convolution gripped in the clamping means. The device includes a body 1 in which is secured a block 6 formed with holding jaws 11, 12, and having secured therein an anvil member 13 spaced from the jaws. A shaft 9 carrying a knife 10 is rotatably mounted in a bore in the block. In operation a spiral 17 is arranged on an adjustable support 22 with a convolution thereof held between the jaws 11, 12, the shaft 9 is then rotated by a handle 16 to move the knife 10 to co-operate with the anvil 13 to cut the convolution and then to bend the cut end over the jaw 11. To facilitate bending and cutting the convolution may be heated by heating the block 6 or by blowing hot air near the jaws. According to the Provisional Specification a similar device may in addition be arranged to cut the other end of the spiral.
Patent GB-309340-A (GB)
Title: Artificial silk-yarn mixtures
IPC: D02G3/04
Filed: 1928-06-15
Abstract: 309,340. Dietrich, G. June 15,1928. Yarns.-Fibres of artificial silk waste and staple fibres thereof are mixed with African wild silk, particularly the anaphe kinds, and from the mixture a yarn is spun which is of increased strength both dry and wet, has a soft feel, can be dyed, and has high fulling power.
Patent GB-576566-A (GB)
Title: Improvements in and relating to electrical contacts
IPC: H01H1/0237
Filed: 1943-10-23
Abstract: A non-sticking, non-welding electrical contact is composed of a metal of high conductivity selected from the group consisting of copper, silver, gold and alloys in which these metals predominate, and, interspersed with such metal, kaolin or an oxide of one of the metals selected from the group consisting of beryllium, magnesium, calcium, strontium and barium and having a m. pt. exceeding 1800 DEG  C., the oxide being preferably in the proportion of 1-10 per cent of the mixture.  Particles of the metal may be mixed with the oxide, pieces of the desired porosity pressed from the mixture and the pieces sintered by heat; a mixture of the finely-divided metal and oxide may be pressed to porous bars and the bars impregnated by heating them together with more of the metal at a temperature above the m. pt. of the metal but lower than that of the oxide; the oxide may be stirred uniformly into molten metal and the mixture cast in chill moulds; a mixture of the oxide and powdered metal may be hot pressed at a temperature sufficiently high to effect bonding.  1-2 per cent of a cementing agent, e.g. sodium silicate, may be added.  Specifications 214,580, 270,300, [both in Class 70], and 523,318 are referred to.
Patent GB-1104555-A (GB)
Title: Welding timers
IPC: G05B19/10
Filed: 1966-04-21
Abstract: 1,104,555. Resistance welding systems. SIEMENS-SCHUCKERTWERKE A.G. 21 April, 1966 [28 April, 1965], No. 17602/66. Heading H2H. A timing and sequencing arrangement for a resistance welder comprises a plurality of bi-stable trigger stages 1-3 each having complementary outputs Al, Al, a triggering input S1 and a cancelling input L1 each supplied from AND circuits 15 etc. one input of which is derived from a unit 7 providing three 180 degrees long pulses displaced by 72 degrees, 325 degrees and 355 degrees per mains cycle to prevent spurious operation of the arrangement. Stage 1 is triggered through AND gate 15 when a switch 10 is momentarily closed, and the pulse generator 7 supplies a 325 degrees pulse. The inlet valve for actuation of the electrodes is then opened. Triggering of stage 1 also resets a counter 5 by an output signal A1. At a time set by a switch 214 an input signal on stage 2 together with an Al signal from stage 1 and an A3 from stage 3 triggers this stage which increases the electrode pressure. At the triggering of stage 2 counter 5 is reset by the OR gate 81 and device 82. The next count commences with the end of the next 355 degrees pulse and at the next 355 degrees pulse which triggers stage 3 it resets counter 5 which operates from the end of this pulse. After expiry of the count set by unit 224 all inputs at present at AND 222 and stage 2 its reset leaving stages 1 and 3 which initiates welding current flow of the duration of which is set by a switch 14, after which stage 1 in counter 5 is reset. A further period is set by switch 215 at the end of which time stage 1 is reset through AND 213. A change over switch 151 provides one shot or a series of operatons. The AND/OR gates may be of dynamic type.
Patent GB-756945-A (GB)
Title: Improvements relating to electric heating of fluids
IPC: F24H1/10
Filed: 1953-06-25
Abstract: 756,945. Heating fluids by electricity. FISHER, A. A. June 25, 1954 [June 25, 1953], No. 17630/53. Class 39(3). A pipe P of mild steel or stainless nickel chrome steel extending from a funnel F and feeding chocolate to a mixer M constitutes a resistance element and heats the chocolate therein. The pipe is supplied with power from a transformer T and connectors L<SP>1</SP>, L<SP>11</SP>, and the connector L<SP>11</SP> is of insulated copper rod. If the pipe is of mild steel the connector L<SP>11</SP> causes some induction heating of the pipe. The temperature of the chocolate may be thermostatically controlled.
Patent GB-965295-A (GB)
Title: Tear-open packages
IPC: B65D75/66
Filed: 1961-05-16
Abstract: 965,295. Tear tapes for packages. H. J. FROHLING. May 16, 1961 [May 31, 1960], No. 17781/61. Heading B8C. A tear tape comprises a number of threads loosely cemented together and to the wrapping material. They may be covered with a strip of tissue paper &c. secured on either side to the package, which provides a weak joint between the package parts when the tape is torn out.
Patent GB-145617-A (GB)
Title: Improvements in or relating to carburettors
IPC: F02M7/02
Filed: 1920-06-29
Abstract: 145,617. Cozette, R. Oct. 25, 1915, [Convention date]. Spray carburettors.-Two concentric nozzles 1, 2 are provided, the main nozzle 2 communicating with the float chamber 5 through a passage 4 and a restricted orifice 11, and the auxiliary nozzle I being fed from a chamber 7 communicating with the passage 4 through a tube 8 provided with holes 9. At high speeds, the chamber 7 empties and fuel is supplied by the nozzle 2 only; as the speed, and therefore the suction in the mixing chamber 3, decreases, the chamber 7 gradually fills and the reduced feed from the main nozzle 2 is compensated by fuel supplied by the auxiliary nozzle 1. According to the Specification as open to inspection under Sect. 91 (3) (a) the nozzles need not be concentric, 'but may be parallel or convergent. This subject-matter does not appear in the Specification as accepted.
Patent GB-716677-A (GB)
Title: Improvements in or relating to magnetrons
IPC: H01J23/207
Filed: 1952-07-15
Abstract: 716,677. Magnetrons. M-O VALVE CO., Ltd., and WINDSOR, L. R. E. July 15, 1953 [July 15, 1952], No. 17868/52. Class 39(1) In a multi-cavity magnetron in which tuning is effected by a metal slug 4 movable into or out of one of the cavities, the slug is mechanically coupled to a member 6 of magnetic material which is rotatable about a fixed axis under the influence of a magnet 8 disposed outside the envelope of the magnetron, rotation of the member 6 causing it to move axially with consequent movement of the slug 4. The member 6 has offset from the axis, a projection 11, and is biased by gravity into contact with a spiral ramp 12 formed on the end of a fixed member t3. According to the Provisional Specification the . member 6 may be biased by means of a spring.
Patent GB-613183-A (GB)
Title: Improvements relating to electrode holders
IPC: B23K9/28
Filed: 1946-06-14
Abstract: 613,183. Holders for arc-welding electrodes. MIDDLETON, A. June 14, 1946, Nos. 17930 and 27393. [Class 39 (iii)] A hollow arc welding electrode holder b, Fig. 3, is surrounded by an insulating sheath, split longitudinally into two or more sections p<1> p<2>, and an outer metal sheath r. The electrode holder b is provided with a transverse hole c in which an electrode a is held by a clamping plunger e slidable within the holder b but prevented from rotating within the latter by a locating screw K threaded through the holder b and projecting into an elongated slot in the plunger e. Two of the insulating sections are provided with half a hole each for accommodating the locating screw K. An additional hole w, Fig. 5, may be provided in the electrode holder b, the hole w making an angle of about 25‹ with the latter, the plunger e being bevelled at e<1> parallel to the hole w. Specification 584,753 is referred to.
Patent GB-1261728-A (GB)
Title: Improvements in or relating to fish tanks
Inventor: JARMAN JOHN FRANCIS
IPC: A01K63/00
Filed: 1968-04-16
Abstract: 1,261,728. Aquaria. J. F. JARMAN and T. J. KELLY. 15 April, 1969 [16 April, 1968], No. 17979/68. Heading A1A. An aquarium is formed from two shaped sections 14 and 15 of synthetic plastics material defining a bowl shaped vessel with a top opening, the two sections being joined together around a flanged seam on a vertical or inclined plane, the edge of the flanged seam, 18 at the bottom part of the vessel providing a support, at least one of the sections being formed of a transparent material. A bracket for lighting, heating and aerating apparatus may be provided.
Patent GB-872502-A (GB)
Title: Mixing apparatus
Inventor: KNOWLES ALBERT FRANCIS
IPC: B01F5/00
Filed: 1959-05-27
Abstract: <PICT:0872502/III/1> <PICT:0872502/III/2> A mixer and reactor for use in the preparation of polyurethane foamed plastics as described in the parent Specification is designed so that mixing of the ingredients occurs during radial flow between the periphery and the centre of the mixing chamber. The apparatus may comprise a mixing chamber B separated by a weir C from an annular feeding reservoir A into which depends a circular baffle K having slots L, Fig. 3.  The stirrer has pegs I which intermesh with fixed pegs J.  Polyester is fed to port M; polyisocyanate to port O and thence to small feed holes P in the reservoir A; and activator to ports Q and thence to a circular groove R supplying feed holes S in the selected hollow fixed pegs J.  The foam forming material is discharged from a central exit port N.  The flow rates of the reactants are regulated so that there is no tendency for reaction mixture to flow back from the mixing chamber over the weir C.
Patent GB-1388692-A (GB)
Title: Multiple-image mecrorecords and reading devices therefor
IPC: G06K17/00
Filed: 1972-04-19
Abstract: 1388692 Optical projection apparatus; cinematography A WALY 19 April 1972 [21 April 1971] 18096/72 Headings G2E and G2J A micro-film or micro-fiche carries a plurality of images, each image being dissected into discrete characters which together define a character pattern and whose characters are spaced in both vertical and horizontal directions; the character patterns of the images are interlaced such that each pattern occupies a distinct position on the film/ fiche. A reader for such fiche/film includes a lens matrix made up of miniature lenses, the film/fiche being placed parallel to the matrix whose lenses are arranged in the matrix to conform with the character pattern. Images are selected by orthogonal movement of the film/fiche. As shown in Fig.2 the fiche R includes 25 images each made up by nine dissected characters forming matrix M. The corresponding reader would have a 3x3 matrix of miniature lenses. The reader's light source may be a lamp arranged for diascopic or episcopic projection. In Fig. 10 a light pipe directs light to each character from a source which could be ambient light collection. Fig. 10 also shows the constructions used for individual miniature lenses, the lens matrix may be integrally formed in acrylic sheet. Whilst the characters may be formed in a rectangular matrix (Fig.2) they may alternatively be formed as parallelograms, circles or spirals. Adjacent images on the film/fiche may differ slightly from each other so that movement of the film/fiche produces animation.
Patent GB-356805-A (GB)
Title: Process for the manufacture of leuco sulphuric acid esters or ester salts of the ureas of leuco-ª‰-aminoanthraquinone and nuclear substitution products thereof
IPC: C07C305/22
Filed: 1930-06-12
Abstract: Sulphuric esters of ureas of 2-aminoanthrahydroquinones are obtained by causing 2-aminoanthrahydroquinone disulphuric ester or salts thereof, or nuclear substitution products of these bodies, to react with phosgene in the presence of an acid-binding agent.  The parent esters may be obtained by esterifying 2-acetylaminoanthrahydroquinones and saponifying the products.  In an example, phosgene is passed into an alkaline aqueous solution of the potassium salt of 2-aminoanthrahydroquinone-9 : 10-disulphuric ester until the presence of the amino group can no longer be detected; the product can be developed on textile fabrics to give yellow dyeings. Similar products are obtained from the disulphuric esters of 2-amino-3-brom- and 1-chlor-6-amino-anthrahydroquinones. 1-Chlor-6-aminoanthraquinone is made by nitrating anthraquinone-1-sulphonic acid, treating the mixture of mononitro derivative thus obtained with sodium chlorate and hydrochloric acid, reducing, benzoylating the mixture of 1-chlor-monobenzoylaminoanthraquinones, and separating the latter into 1-chlor-6- and -8-benzoylaminoanthraquinones by means of alcoholic potassium carbonate solution.  The 1-chlor-6-aminoanthraquinone is obtained by saponification of the corresponding benzoylamino derivative.
Patent GB-544961-A (GB)
Title: Electric connector means
Filed: 1940-12-30
Abstract: 544,961. Contact members for switches. O'BRIEN, J. F. Dec. 30, 1940, No. 18218. [A Specification was laid open to inspection under Sect. 91 of the Acts, June 30, 1941.1 [Class 38 (v)] [Also in Group XXXVI] Spring contacts 28 are formed from a metal stamping having a hemi-cylindrical body part 30, fitting loosely round the supply conductor 22, spring blades 34, and end portions 32 bent to form split collars sufficiently remote from the spring, blades 34 to prevent heating thereof when the collars are soldered or brazed to the conductor 22. The blades 34 are curved outwards and downwards to form abutments 36 to increase the pressure on the co-operating inserted contact.
Patent GB-146299-A (GB)
Title: Improvements in apparatus for opening canisters
IPC: B67B7/70
Filed: 1920-07-02
Abstract: 146,299. Wolff, E. Oct. 26, 1917, [Convention date]. Stoppering.-A device for opening receptacles made from tin-plate, cardboard, &c. comprises a cutter w mounted upon a lever t, the canister &c. operated upon being turned bv toothed wheels m<1> m<2>, h<1> h<2> mounted on shafts i, g<1> driven from a hand-wheel i<3>. When the lever t is turned into a vertical position, a toothed wheel l moves into engagement with a rack on a standard b, and rotation of the hand-wheel i<3> then causes vertical movement of a slide c carrving the lever t and most of the driving-mechanism. In a modification, the cutter w, instead of being mounted on the lever t, is secured directly to the shaft i. The Specification as open to inspection under Sect. 91 (3) (a) states that the apparatus may be used for securing covers of pastel-board &c. to receptacles, the knife w being arranged to press the cover down into the mouth of the receptacle and to produce in the rim of the receptacle a slight recess into which the edge of the cover is forced. This subject-matter does not appear in the Specification as accepted.
Patent GB-672511-A (GB)
Title: A process for the preparation of resorcinol
IPC: C07C37/04
Filed: 1950-07-21
Abstract: Resorcinol is obtained by a process of alkalifusion of benzene m-disulphonic acid in which only 4 moles. alkali per mole. of disulphonate (the theoretical quantity), with no additional substances other than a current of inert gas, are used.  The reactants may also be maintained in the "fluidized" state, by a current of inert gas.  In examples, the mixture is heated to various temperatures in presence of nitrogen.  Specification 559,642 is referred to.