baber/WOPTO huggingface dataset:
Patent GB-1242311-A (GB)
Title: Improvements in inverter circuits
IPC: H02M7/515
Filed: 1969-01-13
Abstract: 1,242,311. Transistor pulse and switching Circuits. GENERAL ELECTRIC CO. 13 Jan., 1969 [18 Jan., 1968], No. 1920/69. Heading H3T. [Also in Division H2] A firing pulse circuit for an inverter, Fig. 2 (not shown)-see Heading H2F-includes a pulse distributer in the form of a ring counter 21 (Fig. 5) comprising three flip-flops 62, 63, 64, and also includes SCR gating circuits 22 connected respectively to the inverter main SCRs. Each gating circuit comprises an oscillator which provides a series of pulses whenever a respective flip-flop transistor 65 is conducting. Thus when Tr 65 of flip-flop 62 is conducting the base of a transistor 90 is clamped to near zero volts and Tr 90 is non-conductive so that current is not drawn away from the base of Tr 93. Thus Tr 93 turns ON creating a positive potential at the dot end of a transformer primary CTP which appears at the dot end of a secondary winding 3TS1 and is coupled via normal diode acting zener 91 to the base of Tr 93. This positive boost to the base of 93 causes it to regeneratively " snap ON " and drives the transistor harder until it saturates the transformer thereby demanding more collector current than can be supported by the base current, so that Tr 93 will turn OFF. Energy stored in the transformer is dissipated via winding 3TS1 which circulates current through a diode 92 and down through zener diode 91. As soon as the transformer is desaturated the transistor 93 is again forward biased via R95 and will turn ON producing a further pulse to the SCR gate and so on.
Patent GB-1089693-A (GB)
Title: Improvements in and relating to rotary cultivating machines
Inventor: HOWARD ARTHUR CLIFFORD
IPC: A01B9/00
Filed: 1964-01-16
Abstract: 1,089,693. Agricultural implements. ROTARY HOES Ltd. Jan. 14, 1965 [Jan. 16, 1964], No. 1953/64. Heading A1B. A rotary cultivating machine is provided with co-operating pairs of "L-shaped" blades 10 attached to radially extending flanges 9, and a stripper member 15 which extends between adjacent edges of the blades to engage sods 14. The stripper member is adjustably attached by means of sleeves 18, 18b and clamping screws 18a, 18c to a cross-bar 16 fixed relatively to the machine. The member has a plate 17 attached thereto, and is also supported from the machine by a vertically adjustable thrust rod 28. The "L-shaped" blades have flexible blades 12 attached to their trailing edges and the rotor axis is rotated in the direction in which it would roll due to the forward movement of the machine, but at a faster rate. The blades may alternatively be rigid and hingedly connected to the blades (Fig. 4, not shown). The blades may be "T-shaped, and arranged with the 'T' extending at an angle to the axial direction of the rotor axis.
Patent GB-784421-A (GB)
Title: Improvements in or relating to frames for motor scooters
IPC: B62K11/08
Filed: 1955-01-21
Abstract: 784,421. Motor-scooters. VICTORIAWERKE AKT.-GES. Jan. 21, 1955 [Feb. 25, 1954], No. 1954/55. Class 136(3) A motor-scooter frame assembly extends from the steering tube to a point beyond the rear wheel and comprises a front part and a rear part joined together at 3. The front fork tube 4 is moulded with the front part 1. The surface 6 for carrying the number plate and the tail light housing 5 are moulded with the components 2. Stiffened angle members 8 are arranged inside the casing in the region of the rear wheel and serve as anchorages for a rear wheel shock absorber. The components of the frame assembly may be of pressed sheet metal or they can be produced from light metal by a pressure casting process. Attachment means for the axle of the rear wheel, the engine and the tank are integrally cast with the components 2. Alternatively the frame assembly may be made from synthetic resin. A channel 7 is moulded in the components 1, 2 in the plane of symmetry of the vehicle. The channel takes the wiring and the control cables. Metal parts such as 9 (Fig. 8) for stiffening the components 1, 2 and attaching parts of the vehicle to the components are embedded in the synthetic resin material. If the frame assembly is produced from sheet metal pressings the channels 7 and the angle members 8 will be fitted subsequently. In an alternative construction the front and rear parts of the frame assembly are connected by a malleable casting 12 (Fig. 11). The front part of the frame assembly comprises a tube 13 connecting the member 12 and the steering head tube 14. Lugs 15, 16 serve for the attachment of the engine.
Patent GB-451756-A (GB)
Title: Apparatus for facilitating the action of a gas or a vapour on a liquid or a mixture of liquids
IPC: B01D47/06
Filed: 1936-01-21
Abstract: 451,756. Treating gases with liquids. ETABLISSEMENTS A. OLIER, Clermont- Ferrand, Puy-de-Dome, France. Jan. 21, 1936, No. 1960. Convention date, Jan. 21, 1935. [Class 55 (ii)] Apparatus for treating a liquid with a gas or vapour comprises a cylinder A with a heating coil H and a central open-ended tube C which carries at its base an injector E for a part of the gas, which circulates liquid in the base of the cylinder continuously through the tube and over a column B of stacked elements such as rings or coils through which rises the main portion of the gas admitted below liquid level at F, the gas passing out at the top of the cylinder. A funnel G receives liquid condensed at the top of the cylinder and discharges it laterally.
Patent GB-1207055-A (GB)
Title: Mattress
Inventor: ACKERMANN WILHELM PAUL
IPC: A47C27/12
Filed: 1968-01-12
Abstract: 1,207,055. Mattresses. W. P. ACKERMANN. 12 Jan., 1968 [9 Feb., 1967], No. 1962/68. Heading A4M. A mattress has a central region of adjustable hardness and comprises three layers a, b, c defining between them two pockets A, B into either of which is fitted a non-resilient plate 4, e.g. of cardboard, plywood or hard synthetic resin, the pockets A, B extending over the greater part of the width and substantially half the length of the mattress. The plate 4 may have a foamed rubber or plastics covering of different thickness or hardness on one or both faces. The plate 4 is shorter than the pockets A, B so that it is displaceable longitudinally of the mattress. The pockets A, B may be closed by a sliding clasp fastener at one side of the mattress. Alternatively, the pockets may be accessible through one or both major faces of the mattress, padded lids secured by sliding clasp fasteners being provided to close the pockets. An upwardly convex pad 7 may be disposed above the plate 4 and may be secured to it. The centre of the plate 4 may have an opening 5 which may be covered on both sides by an elastic membrane. The mattress padding may comprise horse hair which may be vulcanised, cotton, foamed rubber or foamed plastics.
Patent GB-241430-A (GB)
Title: Process for the production of disinfecting solutions, which are capable of being regenerated
IPC: A01N59/10
Filed: 1925-01-22
Abstract: Disinfecting solutions are produced by treating neutral or slightly alkaline solutions of chlorides capable of forming hypochlorites with ozone repeatedly in the course of several days. 1-10 per cent solutions of magnesium, calcium or sodium chloride may be treated in an absorption tower.  A hypochlorite is said to be formed, the reaction being assisted by the presence of metal oxides as iron, copper, nickel &c. oxide.  A hypochlorite solution is regenerated by diluting to less than 10 per cent chloride, mixing with a little iron oxide and saturating with ozone.
Patent GB-380691-A (GB)
Title: Magazine pencil
IPC: B43K21/22
Filed: 1932-01-22
Abstract: 380,691. Pencil holders. ROGERS, F. H., 181, Queen Victoria Street, London.- (Rodi & Wienenberger Akt.-Ges. f³r Bijouterie & Kettenfabrikation ; 58, Bleichstrasse, Pforzheim, Germany.) Jan. 22, 1932, No. 2015. [Class 146 (iii).] In a pencil holder of the type in which the lead-feed pin is gripped by balls or cheeks, the clamping-elements completely surround the feed-pin, and springs are provided between the feed-sleeve and the clamping-sleeve, and the clamping- sleeve and a rigid bottom, and an abutment-sleeve is provided at a distance from the clamping- sleeve. In the form shown in Fig. 1, a guidecasing 6, with a gripping-nose 8, is mounted in the pencil casing 1, fitted with a cap 3, through which an operating-button 22 protrudes. A pressure tube 20, surrounding a lead-feed rod 7, is operated by the button 22, an abutment sleeve 10 and spring 11 are mounted in the sleeve 6, and the spring 11 supports a ball-bearing sleeve 13 with balls 14 about the rod 7. A closing sleeve 16 surrounds the sleeve 13 and its conical lower bore 15 engages the balls 14. The sleeve 16 is depressed through a spring 18 by a collar 19 on the tube 20. In the inoperative position, there is an interval between the tube 20 and sleeve 13, and between the sleeves 16 and 10. When the tube 20 is depressed, the cone 15 is forced down on to the balls 14, thus gripping and advancing the rod 7, until the sleeve 16 engages the sleeve 10 and the tube 20 the sleeve 13, when the sleeve 13 only is advanced and the clamping action is released. On releasing the button 23 the rod 7 is held in place by the nose 8 and the other members return to their original positions. In modifications the sleeve 13 and balls 14 are replaced by conical gripping- cheeks or a combination of conical cheeks and a conical sleeve with ball-bearings may be used. In the form shown in Fig. 4, the roller 19 and sleeve 16 are held apart by a leaf-spring 25, mounted on sleeve 16 and engaging the collar 19. A nose 26 normally lying in an aperture 27 in the tube 6 is provided on the spring 25, and the collar 19 is pierced with a slot 29. At the same time as the sleeves 16, 10 come into contact, the nose 26 passes out of the aperture 27, thus forcing the spring inwards so that its upper end enters the slit 29 and permits the collar 19 to advance farther, thus releasing the clamping action. In the form shown in Fig. 5, two ball-clamping devices are provided, the lower of which takes the place of the nose 8 in Figs. 1 and 4. The clamping-sleeve 16 is advanced by the action of a lever 31, pivoted to the tube 6 and pressed down by the tube 20. At first the lever only engages the sleeve 16 at the short radius 33, but later on, the sleeve 13 is engaged at 34 and thereafter advances faster than the sleeve 10 owing to the larger radius of action.
Patent GB-547068-A (GB)
Title: Improvements in articulated structures such as conveyors, chain grates, elevators or the like
IPC: B65G17/38
Filed: 1941-02-14
Abstract: 547,068. Driving chains. ELLIOTT, J. W. Feb. 14, 1941, No. 2020. [Class 24] [Also in Groups XXX .and XII] In a locking device to prevent axial movement of the pins of chains for conveyers, furnace grates and other purposes the pin 10 is provided with a projection 12, Figs. 3 and .4, or 17, Figs. 6 and 7, on its periphery near the end, and a washer 13 having an opening larger than the cross-section of the pin adjacent the inner side of the projection is placed over the end of the pin and over the projection and engages the pin on the inner side of the projection where it hangs freely from the upper surface of the pin adjacent the inner side of the projection. In the construction shown in Figs. 3 and 4 the projection is formed by the reduced end 12 of the pin in conjunction with a groove 11. The end 12 is formed with flats 15 and the hole 14 in the washer has corresponding flats 16. In a modification, Figs. 1 and 2 (not shown), the projection 12 is the full diameter of the pin and is circular, and the hole in the washer is also circular. In the construction shown in Figs. 6 and 7 the projections are formed by the ends of a peg 17 and the washer has one or two notches 19 to enable it to be passed over the projections one at a time by tilting the washer. In a modification, Figs. 9 and 10 (not shown), of the arrangement shown in Figs. 3 and 4 the head 12 of the pin has two diametrically opposed notches and the washer has two corresponding notches.
Patent GB-606836-A (GB)
Title: Improvements in or relating to incubators
IPC: A01K41/00
Filed: 1946-01-21
Abstract: 606,836. Incubators. PAPWORTH VILLAGE SETTLEMENT, (trading as PAPWORTH INDUSTRIES), and MARSHALL, W. Jan. 21, 1946, No. 2021. [Class 5(ii)] An incubator comprises a variable number of setting and hatching compartments and air-conditioning plant disposed externally of such compartments, with ducts whereby the air circulated may be returned wholly or in part for reconditioning. In the form shown the incubator is divided into at least four compartments, the end compartments 3, containing air conditioning plants, and the setting and hatching compartments 5, 6 in the middle. In the compartment 3 the air having passed over an electric heater and a water vaporising device 8 is forced by a fan 9 into the ducts 12 to the hatching compartment 5 and returns through an outlet duct 13. To eliminate risk of bacterial infection the air is also passed over the mercury vapour lamps 22. Thermostats are used to control the temperature and any suitable arrangement is ued to control the humidity.
Patent GB-524048-A (GB)
Title: Improvements in or relating to the manufacture of sliding friction bearings
IPC: B29C43/02
Filed: 1939-01-20
Abstract: 524,048. Moulding bearings. ELECTROLUX, Ltd. Jan 20, 1939, No. 2031. Convention date, Jan. 25, 1938. [Class 87 (ii)] [Also in Group XXXIV] In constructing bearings by moulding one bearing element against the bearing surface of another or a matrix of corresponding shape, clearance between the bearing surfaces is produced during the moulding by relative movement imparted to the elements. One element may have a rotary, eccentric or planetary motion and the other be stationary or vibrate radially or radially and axially. In Fig. 10, the base of an electrically heated mould 28 is shown constituted by a rotatable shaft 29.having an eccentrically disposed crank 34 fixable in different positions in a bore 33 of the shaft to adjust the degree of eccentricity in the mould of the crankpin 36 and bearing element on it. When moulding pressure is applied through the stamp 32 the shaft 29 is rotated. A layer of oil applied to the forming element increases the clearance. The said element may be provided with radial recesses or lugs so that the bearing produced forms a single unit, or layers of paper may be used in the mould along which the formed element can be divided after moulding. In Fig. 2 oil retaining chambers 15 closed by metal plates 17 and lubricating channels 16 are formed as shown in a spherical outer element, a circulation of oil being produced as indicated by arrows through the bearing surface. Solid outer elements may be made of porous oil retaining material to permit the same circulation of oil therein. The forming element may be given a non-circular shape, e.g. be bevelled at the circumference, to produce the Michell effect. With a plurality of different moulds the elements therein receive movement from a common drive. The mouldable material may be synthetic resin, babbitt metal or sintered metal powder.
Patent GB-261578-A (GB)
Title: Improvements in machines for forming glassware
IPC: C03B9/44
Filed: 1926-01-23
Abstract: 261,578. Dicker, S. G. S., (Owens Bottle Co.). Jan. 23, 1926. Blowing. - The finishing moulds of a rotary machine have bottoms which tilt to discharge the finished articles, and each bottom is mounted on a frame slidable verticallv on the mould carriage, the tilting movement being controlled by a cam on the carriage. The mould bottom consists of a plate 10, Fig. 4, having a. cylindrical extension 14 which slides into a cylindrical part of a carrier 12. It is held in place by a spring detent 15 and can thus be replaced quickly. The carrier 12 is mounted on a horizontal rocking-shaft 13 carried by a frame 18 which slides vertically in guides 19, Fig. 2, on the usual rotary mould carriage. The frame-18 is periodically moved up and down by a roll 22 which runs on a stationary cam track. The tilting of the bottom is controlled. by a cam 27 secured to the frame of the mould carriage. A roll 28 which runs on this cam is carried by an arm fixed to the shaft 13. A yoke 30 also fixed to the shaft provides a support for the carrier 12. Air for cooling the bottom enters the carrier 12 through a port 33 and escapes through openings 34 in the extension 14. The flow of air is controlled by a damper 35. The bottom plate 10 may be formed with a central projection when making " pushed" " bottles.
Patent GB-310437-A (GB)
Title: Improvements in the manufacture and production of reduction products of vat dyestuffs and other reducible organic compounds
IPC: C09B9/00
Filed: 1928-01-21
Abstract: 310,437. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Jan. 21, 1928. Addition to 299,899. Reduction products; vat dyes, esters of leuco compounds of.-The reduction of vat dyes or of other organic compounds containing reducible carbonyl or quinone groups is effected by means of sulphur dioxide and metals in the presence of organic bases and in the absence of any considerable quantities of water, the reduction products being subsequently acylated, if desired. As metals, copper, zinc, iron, aluminium, or metallic mixtures, such as Devarda's alloy, may be used, and pyridine, aniline, dimethylaniline, and trietha.nolamine, or mixtures thereof, are specified as organic bases. In examples : (1) 5: 5<1> : 7 : 7'- tetrabromindigo is treated with sulphur dioxide in the presence of pyridine and copper powder or zinc dust, the mixture is stirred in an atmosphere of inert gas, such as coal gas or carbon dioxide, and the leuco compound obtained is esterified by treating with acetic anhydride or chlorsulphonic acid; and (2) dimethoxydibenzanthrone is reduced to the leuco compound in a similar manner and acetylated by treating the solution with acetic anhydride. Other vat dyes, such as indigo and thioindigo, or other compounds containing carbonyl or quinone groups, such as arylidoquinones and phenanthrenequinone, may be reduced in a similar manner.
Patent GB-547231-A (GB)
Title: Improvements relating to apparatus for handling frequency or phase modulated electrical oscillations
IPC: H03G11/06
Filed: 1941-02-18
Abstract: 547,231. Frequency and phase modulation. COSSOR, Ltd., A. C. Feb. 18, 1941, No. 2212. [Class 40 (v)] Amplitude modulation is removed from a frequency or phase modulated wave by heterodyning the wave in a linear rectifier with a wave of constant frequency, the amplitude of which is less than that of the modulated wave. The receiving circuit shown in Fig. 1 comprises a normal frequency-changing stage 3, 4 and amplifier 5 with a tuned output circuit 6 feeding a linear diode rectifier 10 in series with a coupled source 7 of constant frequency, and of low amplitude compared with the wave from circuit 6. Under these conditions the resultant wave of the difference frequency in the tuned circuit 11 is of substantially constant amplitude, and is passed through amplifiers and frequency-modulation detectors to the instrument 16. One branch of the circuit 11 may form a series-resonant short circuit at the frequency of the circuit 6. In Fig. 2 the heat-frequency wave is passed directly to a frequency discriminator comprising off-tune circuits 17, 18 and rectifiers 19, 20. Condensers 37, 38 together with the inductance of circuits 17, 18 form series-resonant short circuits at the frequency of the circuit 6. These condensers are shunted by high resistances to provide a D.C. path. Two diodes balanced with respect to earth, and with divided input from circuits 6 and 7, may be used (Fig. 3, not shown). When using a transmitting circuit, the input from the source 7 may be regulated by a potentiometer, and the output taken from the circuit 11 may be varied in steps by a switch arm and an attenuator network.
Patent GB-221145-A (GB)
Title: Improvements relating to arrangements for indicating the presence of conducting bodies
IPC: G01V3/10
Filed: 1924-01-28
Abstract: 221,145. Geffcken, R. H. H., Richter, R. H., Wetzel, M. H., and Wetzel, M. K. Jan. 28, 1924. Locating conductors.-The presence of conducting bodies is indicated by the variation in the natural frequency of closed oscillatory systems. The closed systems I, II, Fig. 2, consist of inductances L<1>, L<2>, capacities C<1>, C<2> and are tuned to the frequency of a generator G which excites the circuits I II, by means of a coupling-coil N. The circuits I, II are coupled to an indicating-circuit III containing an inductance L<3>, a detector D, and an indicating instrument such as a pointer galvanometer. Normally the circuits. I, II produce equal and opposite effects on the circuit III and no indication is given. Approach of persons or conductors to the circuits I, II varies the capacites C<1>, C<2> or the inductances L', L<2>, and therefore the natural frequencies of the circuits. The phases of the currents induced therein are therefore altered and their actions on the circuit III no longer counterbalance, an indication being given. In a modification, Fg. 4, the circuit I is excited at its natural frequency from the generator G and the circuit II at its natural frequency by the circuit 1. The circuit III is coupled both with the generator circuit. G and with the oscillating circuit II, and may contain a detector as in the arrangement shown in Fig. 2, or a thermionic valve R connected as shown in Fig. 4. Displacement of phase causes variation of the anode current which operates an indicator or alarm.
Patent GB-739708-A (GB)
Title: Improvements in hydraulic drive devices for shaping machines, planing machines or the like
IPC: F15B11/048
Filed: 1952-01-28
Abstract: 739,708. Hydraulic motors. ELLIOTT & CO., Ltd., B., SELBY, J., and FRYE, C. H. April 20, 1953 [Jan. 28, 1952], No. 2284/52. Class 69 (2). [Also in Groups XXII and XXVIII] In a piston and cylinder device, such as the ram of a shaping machine, supplied with liquid from a pump and in which the piston is automatically reversed at a given point, the output of the pump is automatically reduced just prior to the reversal of the piston. The piston and cylinder motor is controlled by a reversing valve in turn controlled by a rotary pilot valve actuated by control elements 18, 19 engaged by dogs actuated by the piston at the ends of its stroke, the elements having rack teeth engaging a pinion 22 connected to the rotary valve. The pump comprises a piston 1, a cylinder 2, a rotary cam 3 driving the piston through a cam follower lever 4 and a follower lever 5 which is adjusted by means of a knob 14 to vary the piston stroke. A cam cut-off element 46 is rotatably mounted on the cam shaft and is geared to a pinion 42 rotatable on a shaft 43 and having a lug 41 which when the element 19 is depressed to cause the motor to be reversed is engaged by a member 40 carried on an extension 39 of the element 19. The cam cut-off element 46 is thus rotated and a portion 52 thereof lifts the cam follower lever 4 from the cam which is rendered ineffective over the major portion of its revolution. When the element 19 is released on reversal it is returned by a spring 52<SP>1</SP> allowing the full stroke of the pump and returning the pilot valve to cut-off position, the reversing valve being locked in position. The element 18 reverses the piston at the other end of the stroke without affecting the pump stroke. A plurality of pump cylinders, cut-off elements, &c., are normally provided, with simultaneous control.
Patent GB-1533521-A (GB)
Title: Filter bag
IPC: A47J31/08
Filed: 1977-01-20
Abstract: 1533521 Filter bag TEAFILTER INTERNATIONAL AS 20 Jan 1977 [26 Jan 1976] 02289/77 Heading A4E [Also in  Divisions B 1 and B8] A filter bag for making tea or coffee has a closed bottom 8 side seams 5, 6, and an open top 7, the side seams increasing in width towards the bottom. As shown, the bag is formed from two superimposed blanks 2, 3 of a non-woven filter paper and the closed bottom is provided by a bottom seam 4 so that, in plan, the bag interior is rectangular. In embodiments the bag interior tapers, Fig. 2, (not shown) and the bag exterior may be rectangular, Fig. 3 (not shown). Alternatively, Fig. 4 (not shown) the bag interior has a curved outline.