baber/WOPTO huggingface dataset:
Patent GB-540549-A (GB)
Title: Improvements in or connected with brushes
IPC: A46D1/00
Filed: 1940-12-05
Abstract: 540,549. Brushes. COSBY, jun., E. L. H. Dec. 5, 1940, No. 17317. [Class 19] In brushes having bristles of artificial fibre, the bristles are of irregular shape in cross section to form a series of longitudinal edges or lines along the bristles. The free ends are more or less pointed and the outside surfaces roughened.
Patent GB-922390-A (GB)
Title: Improvements in setting devices for circular cutter knives in rewinding and strip cutting machines
IPC: B26D7/26
Filed: 1961-05-12
Abstract: 922,390. Cutting machines. MASCHINENFABRIKEN ZUM BRUDERHAUS G.m.b.H. May 12, 1961 [May 14, 1960], No. 17415/61. Class 31(1). In a device for setting circular cutter knives 1 in rewinding and strip cutting machines, the knives are non-yieldably connected to units which can be simultaneously swivelled about axes normal to the axes of revolution of the knives to present the knives to the cutting edges 14 of counter-knives 15. Knife 1, Figs. 1 and 2, is held in a holder 2 which is rotatably mounted in ball bearings 3 on a stub shaft 4, the stub shaft being secured at right angles to a swivel shaft 5. The knife is turned through 90 degrees out of and into engagement with its counterknife by pneumatic, hydraulic or electromagnetic means actuating a rack and pinion 9<SP>1</SP>, 10, the rack being connected to a piston or plunger 8 and the pinion to the swivel shaft 5. A handwheel 13 is provided for individual adjustment of the knife 1 of each swivelling unit. When the swivelling means are pneumatically or hydraulically operated all the knives are simultaneously moved into contact with their respective counterknives as soon as the pistons 8 are displaced by the pressurized fluid in lines 16, 16<SP>1</SP>, Fig. 5, and when the knives have made contact with the counterknives, the pressure in the cylinders continues to rise to a pre-set level until the resultant contact pressures reach a corresponding con trollable value. Regulating valves 1611 serve for adjusting any difference in contact pressure after the master valve 21 has been adjusted and change-over valve 18 directs the operating medium to the appropriate side of the pistons while draining the non-pressurized side through line 19. When the swivelling means are operated by magnetic fields then the knives will be moved into contact with their counter-knives as soon as the fields are established, and after the knives have made contact, the fields build up to full strength and thus provide the requisite contact pressure.
Patent GB-515801-A (GB)
Title: Improvements in or relating to television and like systems employing electronic scanning devices
IPC: H01J29/02
Filed: 1938-06-13
Abstract: 515,801. Cathode-ray tubes. BAIRD TELEVISION, Ltd., and JONES, V. A. June 13, 1938, No. 17509. [Class 39 (i)] In order to remove " tilt and bend " effects in a television device comprising a tube having a mosaic screen scanned by a cathode-ray and a signal electrode, an auxiliary photoelectric member is provided which is illuminated by light signals produced, for example, by means such as those described in Specification 462,110 and the electrons emitted employed to modify the signals derived from the signal electrode. In the arrangement shown a photo-electric mosaic screen 2, on which the image to be transmitted is focussed and which is scanned by a cathode-ray is backed by a signal plate 3 with a photo-electric surface. This surface is illuminated from a source 5, such as fluorescent screen bombarded by a grid controlled stream of electrons controlled by suitable signals, and the electrons emitted are collected by an electrode 7 connected to the signal electrode 3 through the load resistance 9. The mosaic 2 may consist merely of conducting elements and an electron image derived from a continuous photo-electric surface on which the image to be transmitted is projected or focussed on it. The correcting signals may be applied to an electrode of an electron multiplier made to amplify the signals.
Patent GB-129984-A (GB)
Title: Improvements in Metal Working Machinery, particularly for Forming Sheet Metal Tubes.
Inventor: STOLP FRANK HERMAN
IPC: B21C37/10
Filed: 1919-07-14
Abstract: 129,984. Stolp, F. H. May 12, 1917, [Convention date]. T·bes.-Apparatus for making tubes comprises a shouldered mandrel which pushes a metal strip along a guide way so that adjacent dies progressively shape the projecting edges of the strip. In the machine shown, a flat strip 12, Fig. 7, is placed on the inclined faces 10, 11 of side plates 7, 8 and then forced between them and against a die 9 by a former 13, Fig. 1. The former is then raised and a mandrel 16 advanced by a slide 2 through a guide into the channelled blank which it engages by means of a shoulder 23. The latch 24 is then lifted to allow the mandrel to push the blank past the dies 25 - - 29 which bend and interlock the edges as shown in Figs. 8, 9, 10, and 11. When the mandrel is withdrawn it collapses, the wedge 22, Fig. 5, remaining stationary till engaged by the pin 30. Rods and bars.-The Specitication as open to inspection under Sect. 91 (3) (a) stated also that the apparatus was applicable for making sheet metal mouldings. This subject-matter does not appear in the Specification as accepted.
Patent GB-1100500-A (GB)
Title: Production of sawtooth shaped waves for use in deflection systems of cathode-ray tubes
IPC: H03K4/34
Filed: 1966-04-22
Abstract: 1,100,500. Sawtooth generating circuits. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 22 April, 1966 [22 April, 1965], No. 17685/66. Headings H3P and H3T. In a deflection oscillator for a cathode-ray tube, the waveform is arranged to rise linearly or more rapidly than linearly by using a voltagedependent capacitance charged or discharged via resistance. As shown in Fig. 4, a field time base for a television receiver comprises a voltagedependent capacitance 1, repetitively charged from supply 4 via resistor 3 and discharged by a blocking oscillator 2. The waveform is amplified by a pentode 16 feeding deflection coils 20 via a transformer 19. Alternatively the transformer 19 may be replaced by a resistive load so as to provide a voltage feeding an electrostatic cathode-ray tube. The capacitance 1 may be of barium titanate, a variable-capacitance diode or a reverse-biased selenium rectifier, the capacitance of which is inversely dependent upon the applied voltage. The waveform across capacitance 1 may be arranged to rise more rapidly than linearly so as to provide a parabolic component required for electromagnetic deflection. The wave shape may be adjusted by a variable resistor 6 decoupled by a capacitor 7 which adjusts the biasing point on the characteristic of capacitance 1. Alternatively in Fig. 3 (not shown), the wave shape may be adjusted by shunting capacitance 1 by a series combination of a manually variable capacitor and variable resistor. The frequency is adjustable by resistor 13. Valves 10, 16 may be replaced by transistors. A plurality of voltage dependent capacitances having different time constants may be provided.
Patent GB-1469217-A (GB)
Title: Spring-loaded valve with a lifter mecahanism
IPC: F01L9/20
Filed: 1975-04-29
Abstract: 1469217 Valves; linkwork NISSAN MOTOR CO Ltd 29 April 1975 [11 May 1974] 17733/75 Headings F2V and F2K A lift valve 16, 18 held open by a compression spring 26, is closed by a mechanism which consists of a link 30 extending axially from the stem 18, a second link 36 pivoted at one of its ends 38 to the link 30 and to the end of a third link 40 at a point 44 in its length, the third link being pivoted to a shaft 42 fixed to the housing 34, and there being actuating means (e.g. rod 50) connected to the other end of the second link. The actuating rod 50 may be operated by a line or actuator 28 and may intersect the axis of the first link at right angles passing through shaft 42 which passes through the guide slot 54. The length of the third link may be equal to the distance of its pivot point from the pivoted end of the second link.
Patent GB-399943-A (GB)
Title: Improvements in electrical contact pieces
IPC: H01M50/50
Filed: 1932-06-23
Abstract: 399,943. Couplings. KLEINMANN, E. and MENDEL, A., 21, Wilhelmstrasse, Lichtenberg, Berlin. June 23, 1932, No. 17751. [Class 38 (i).] A contact forming the terminal of an electric battery comprises a bridge-piece of thin sheet metal stiffened by corrugation or convexity. The central contact surface 1 has two parallel corrugations 6, 7 near its edges, extending partly along the sloping supports 2 which may also or instead be made convex. The free end portion 4 may be curved and the end 5 is provided with a curved tag 8 for soldering to the case of the battery. In stamping the contacts from sheet metal the tag 8 is cut from the adjacent strip leaving a recess 9.
Patent GB-654153-A (GB)
Title: Preparation of phenol by distillation of products of hydrolysis of monochlorobenzene
IPC: C07C37/02
Filed: 1947-07-04
Abstract: <PICT:0654153/III/1> In the preparation of phenol by hydrolysis of chlorobenzene in the presence of cuprous chloride as catalyst, the reaction products comprising phenol, hydrogen chloride and unchanged chlorobenzene and water, are introduced into a distillation column together with further quantities of chlorobenzene and water, the amount of water and conditions of the column being such that vapours of both the binary azeotrope C6H5Cl/H2O and the ternary azeotrope C6H5Cl/H2O/HCl are given off from the top of the column; these vapours are returned to the hydrolyser, preferably after passing through molten cuprous chloride, while phenol and hydrochloric acid are withdrawn from the base of the column.  In the example the head of distillation column 2 is maintained at 97 DEG  C. and the overhead vapours contain chlorobenzene (13290 grm.), water (5180 grm.) and hydrogen chloride (22 grm.).  These vapours are bubbled through molten cuprous chloride in bath 7 and are then introduced into hydrolyser 1 which contains a metal silicate impregnated with cuprous chloride and is maintained at 450 DEG  C.  Chlorobenzene (1329 grm.) and water (213 grm.) are added at a and b to the vapours leaving the hydrolyzer, and the mixture is then introduced into column 2 which also receives 1769 grm. of water at c.  The mixture withdrawn from the base of the column contains phenol (1000 grm.), hydrogen chloride (431 grm.) and water (1768 grm.).  This mixture is cooled to atmospheric temperature in decanter 3 where it separates into two layers.  The upper layer is introduced into column 4 and the lower layer into column 5; the top of each column being maintained at 107 DEG  C.  The condensed distillates from columns 4 and 5, which both contain phenol, hydrogen chloride and water, are brought together in decanter 6 where they divide into two layers: the upper layer is refluxed to column 4 and the lower layer to column 5.  Phenol is withdrawn from the base of column 4, and hydrochloric acid from the base of column 5.  In a second example, decanter 6 is dispensed with, and the distillates from columns 4 and 5 are passed to decanter 3.
Patent GB-221907-A (GB)
Title: Improvements in furniture castors
IPC: B60B33/00
Filed: 1923-07-10
Abstract: 221,907. Lyons & Co., Ltd., J., and Archer, C. F. July 10, 1923. Castors. - A furniture castor has two supporting wheels 2 fixed one at each end of a horizontal axle 4 rotating in a lug or projection 5 on the sleeve or bearing 6 of a pin 7 secured to the fixing plate or socket of the castor. Ball bearings are provided at the central portions of the axle of the wheels and at each end of the sleeve, the balls at the lower end of the latter being between and below the centres of the wheels, which carry rubber tyres 10 held in place by flanges 11.
Patent GB-1569532-A (GB)
Title: Suction device for attachment to a motor-driven hand tool
IPC: E21B21/015
Filed: 1978-05-05
Abstract: An appliance for extracting drillings knocked off by the tool of a powered hand tool is described which has a collecting device (25) which is connected to a suction line (22, 24) which is run past an extractor fan (12). The appliance is designed as a unit which can be separately attached to the powered hand tool. The extractor fan together with the drive motor (13) is arranged in the interior of an auxiliary handle (14) releasably fastened to the powered hand tool. <IMAGE>
Patent GB-127490-A (GB)
Title: Improvements in Automatic Valves for Discharging Sediment from Steam-boilers and for like purposes.
Inventor: DEXTER FRANK ROBERSON
IPC: F22B37/54
Filed: 1918-11-04
Abstract: 127,490. Dexter, F. R. Nov. 4, 1918. Blow-down apparatus; emptying.-Apparatus for blowing down sediment from a steam boiler or for like purposes comprises a piston valve 24 which is oscillated automatically by the boiler pressure, and a chamber 20 opening into the side of the valve casing, so that on the backward stroke of the valve, sediment is drawn through a pipe 13 opening into one end of the valve casing into the chamber, and on the forward stroke the sediment in the chamber is discharged through a pipe 17 at the other end of the casing. The valve is operated by a piston 25 in a cylinder 12 connected by a pipe 28 to the boiler steam-space, the cylinder having a larger cross sectional area than the valve casing. A valve 31 in the piston 25 has projecting ends which contact at the ends of the stroke with cylinder ends. At the end of the forward stroke, the valve opens and allows the boiler steam to pass through the piston to the outlet 18. The piston is returned by the pressure on the valve 24, the valve 31 being again closed by abutment against the cylinder cover. The boiler may be emptied by placing it in direct communication with the discharge by opening a valve 21 in a by-pass 16.
Patent GB-231728-A (GB)
Title: Improvements in connection with hydraulic and like power storage systems
IPC: F15D1/00
Filed: 1924-07-28
Abstract: 231,728. Renouf, S. W. B., Lloyd C. G., and Green, A. L. July 28, 1924. Fluids, regulating volume of flow or pressure of; check lift valves.-Means are described for permitting fluid, preferably a mixture of oil and compressed air, to pass from a chamber at lower pressure into a chamber at higher pressure, and increase the pressure in the latter chamber. The form shown in Fig. 1 comprises pear or heart shaped chambers communicating through minute openings 2 disposed in upstanding pips. In a modification, the fluid passes through one or more spiral grooves 4, Fig. 2, of diminishing depth formed either in a conical member 3 or in the chamber walls. Another form comprises a spinning and vibrating valve having a head 8, Fig. 3, with a knife edge 14 co-operating with a fixed knife-edge 15, the valve being caused to spin by the fluid passing through inclined grooves 12 in a nut on the valve spindle, and helical grooves 10 of diminishing depth being provided on the valve spindle or in the bore in which the spindle works. The fluid is given a whirling motion by spiral grooves 17 surrounding a fixed jet tube 20, spins a sleeve 25, and passes through a chamber 26 and the jet tube to the valve. In a modified form, the valve spindle projects through a casing 30, Fig. 6, to which the fluid obtains access through spiral grooves 32.
Patent GB-1479658-A (GB)
Title: Polyurethane foams
IPC: C08G18/76
Filed: 1975-04-02
Abstract: 1479658 Polyurethane foams IMPERIAL CHEMICAL INDUSTRIES Ltd 2 April 1975 [24 April 1974] 18085/74 Headings C3R and C3C A flexible polyurethane foam is prepared by reacting a diphenylmethane diisocyanate composition containing at least 15% wt. of 2,4<SP>1</SP>- diphenylmethane diisocyanate with a modified polyether polyol prepared by the free radical polymerization of one or more ethylenically unsaturated monomers in situ in a polyether polyol having a molecular weight of from 1000 to 10,000, the amount of monomer(s) used generally being from 1-75% wt. based on the weight of the polyol. The modified polyether polyols are believed to be dispersions of polymers and copolymers of ethylenically unsaturated monomers in unchanged polyether polyol together with various graft copolymers formed by the grafting of polymer and copolymer chains of ethylenically unsaturated monomers on to the polyether polyol. Suitable polyols are obtained by the reaction of alkylene oxides or substituted alkylene oxides with a compound containing a plurality of active hydrogen atoms and are preferably polyoxypropylene and poly- (oxypropylene-oxyethylene) diols and triols. The modified polyether polyol may be used in admixture with unmodified polyether polyols or polyester polyols. Suitable monomers include styrene, α-methylstyrene, ethers and esters of vinyl achohol, acrylonitrile, methacrylonitrile, esters of acrylic and methacrylic acid and mixtures thereof. The preferred diphenylmethane diisocyanate composition contains 20-80% wt. of the 2,41-isomer, the remainder being the 4,4<SP>1</SP>-isomer with small amounts of the 2,2<SP>1</SP>- isomer. Other isocyanates, e.g. tolylene diisocyanate may additionally be present in the reaction mixture, as well as conventional ingredients such as blowing agents, catalysts, surfactants, crosslinkers, flame-retardants and fillers. The density of the foam may be modified by overpacking. In the examples flexible foams are prepared from a formulation comprising pure diphenylmethane diisocyanate containing 60% wt. of the 2,4<SP>1</SP>-isomer and 40% wt. of the 4,4<SP>1</SP>-isomer, a silicone surfactant, stannous octoate, bis(dimethylaminopropyl)urea, water, and a modified polyether polyol mixture which has been prepared either (1) by polymerizing a 50/50 wt. mixture of acrylonitrile and methylmethacrylate in the presence of an ethylene oxide tipped polyoxypropylene diol of M. Wt. 3500, and mixing the product with an equal weight of an equimolar mixture of an ethylene oxide tipped oxypropylated glycerol (M. Wt. 6000) and an ethylene oxide tipped oxypropylated diethylene glycol (M. Wt. 4000); or (2) by polymerizing acrylonitrile and methylmethacrylate (50/50 mixture) in the presence of an ethylene oxide tipped oxypropylated glycerol (M. Wt. 5300), the polymerization in each case being carried out in the presence of azobisisobutyronitrile as catalyst.
Patent GB-611596-A (GB)
Title: Improvements in cigarette and like cases
IPC: A24F15/12
Filed: 1946-06-18
Abstract: 611,596. Cigarette cases. TRURO, J. June 18, 1946, No. 18199. [Class 18] A cigarette case has channel sectioned end closure members 2 pivoted at 4 to the sides 1 and pivotally connected at 7 to hinged lids 5 so that on inward pressure on members 2 the lids are swung to open position. The members 2 are returned to normal position by springs 10 disposed in grooves 9 in the side walls 1 and anchored to a central partition 8. Transverse coil springs 11 on the pivot pins 6 of the lid maintain the lids and case in close fitting contact.
Patent GB-756252-A (GB)
Title: Improvements in or relating to the preparation and spinning of textile fibers
IPC: D01H4/00
Filed: 1954-06-22
Abstract: 756,252. Producing fibrous strands and yarns. KEELER, L. M., and STRANG, P. M. June 22, 1954, No. 18279/54. Classes 120 (2) and 120 (3). Fibres are arranged in parallel form in preparation for spinning by adding them to a liquid which is passed through a tube wherein the velocity gradient is such as to cause the fibres to migrate towards the axis of the tube, the liquid stream having a discharge velocity of at least one foot per second. A portion of the tube at the exit end may be rotated to twist the fibres by rotation of the liquid in the end portion. Fibres may be suspended in water in a receptacle 5a provided with a pipe 9a that has a terminal - portion 18 which is rotatable and formed with apertures for the centrifugal discharge of liquid. By reason of the velocity gradient within the pipe 9a, the fibres migrate to the axis of the pipe and due to rotation of the portion 18 twist is inserted and the yarn Y is wound at M. In another form of apparatus, the fibre-carrying stream is allowed to deposit the fibres on a foraminous belt without twist being inserted; the fibres are taken from the belt in the form of a strand and twisted on conventional apparatus. More than one liquid receptacle may discharge fibre-carrying streams and fibres of different kinds may be contained in separate receptacles, the several pipes combining to form one stream in which the fibres intermingle. Optimum results are obtained with pipes of # inch diameter and preferably lined with glass or porcelain.
Patent GB-228102-A (GB)
Title: Sound-reproducing instruments
IPC: H04R7/12
Filed: 1924-07-31
Abstract: 228,102. British Thomson-Houston Co., Ltd., (Assignees of Hibacsko, G.). Jan. 25, 1924, [Convention date]. Magnetic instruments; loud-speakers; diaphragms.-A sound reproducing instrument comprises a hollow rigid diaphragm supported solely by a vibratory member. In the loud-speaking telephone shown, the diaphragm comprises two conical members 12, 13 of aluminium secured together at their bases, and is entirely supported on armature 5 of the receiving electromagnet 4. A housing 17, supported on posts 20 and carrying a horn 16, closely surrounds the diaphragm without touching it. The armature 5 is pivoted on a roller 6, and is attached to a flexible member 8 adjustable by a screw nut 11. The Specification as open to inspection under Sect. 91 (3) (a) states that the device may be used as a transmitter. This subject-matter does not appear in the Specification as accepted.
Patent GB-939020-A (GB)
Title: Improvements in or relating to synchronous rotary electric machines
Inventor: RAWCLIFFE GORDON HINDLE
IPC: H02K19/32
Filed: 1959-05-29
Abstract: 939,020. Winding layouts for dynamo-electric machines. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Nov. 27, 1959 [May 29, 1959], No. 18411/59. Class 35. In a pole-changing synchronous machine in which the D.C. excited pole-member has polechanging by the phantom pole method, the amplitude of the poles at the end of each halfwinding is reduced, e.g. to one fifth to one third of full value, in the reduced pole-number to reduce sub-harmonics. Thus, the 10-pole field shown in Fig. 1A is modified to 8-poles, not by the conventional phantom-pole method shown in Fig. 1B, but by reducing the amplitude of poles 1, 5, 6, 10 (instead of eliminating poles 5 and 10), and reversing half the winding in the usual way. Various connections of rotor field windings, using coil elimination and coil neutralisation, are shown. The A.C. winding may be as described in Specification 900,600.
Patent GB-265541-A (GB)
Title: Method of preparing pigment-oil compositions
IPC: C09C3/00
Filed: 1926-07-23
Abstract: 265,541. Acheson, G. W. Feb. 5, 1926, [Convention date]. Incorporating paint ingredients. - Pigmentoil compositions are made by forming a pasty pigment-oil-water emulsion, the oil being the dispersed phase, and adding oil gradually at a rate not substantially greater than that at which oil is absorbed, and working the mixture until separation of water occurs. Pigments in finely subdivided form are first incorporated with water and a small proportion of oil added. " Deflocculated " pigments such as are obtained by working pigments with tannin, starchy materials &c. and water may be used. The balance of the oil in the final paste is then gradually added. The paste may be compounded with oils or other vehicles to produce paints &e. or may be dried by the method described in U.S. Specification 1,431,079. The term " oil " includes neutral solvents or diluents, immiscible with water, commonly used in paints &c. and among suitable pigments are the carbon blacks and chrome yellow. Reference has been directed by the Comptroller to Specification 27312/07.
Patent GB-244014-A (GB)
Title: Beet lifter
IPC: A01D25/02
Filed: 1925-07-20
Abstract: 244,014. Christensen, K. O., and Helt, F. L. July 20, 1925. Crops, root, digging- machines for. - A beetlifting attachment for a plough beam consists of a J-shaped arm a with forwardly directed knife-edge c; the outer part of the J carries an inclined c.hiselshaped or knife-shaped cutter f, which lifts the beets, forcing them over the rear part h.