baber/WOPTO huggingface dataset:
Patent GB-1274876-A (GB)
Title: Plasma arc heating apparatus
IPC: H05H1/36
Filed: 1969-06-19
Abstract: 1,274,876. Induction plasma apparatus; pulse generating circuits. CANADIAN TITANIUM PIGMENTS Ltd. 19 June, 1969 [2 Aug., 1968], No. 31004/69. Headings H3P and H5H. Induction plasma gas heating apparatus 10 has electrodes 38, 40, for ionizing the gas which is passed through and over the helical induction coil 11 mounted in a tubular chamber. The spacing between adjacent turns of the coil 11 is less at each end than in the middle portion of the coil, such that the plasma 55 is established in the middle of the coil. The conically tipped anode 38 has passageways 39 through which gas is injected into the space between the electrodes 38, 40, the cathode 40 being annular. A perforated metal neutralizer screen electrode 41, the electrodes 40, 41, being earthed at 42. Gas is also injected into the tubular chamber via nozzles 32, 33, between the electrodes and the coil. Unidirectional voltage pulses across electrodes 38, 40, are produced by capacitance discharge through a thyratron 65 from a series resonant circuit, 68-71, Fig. 2a, the thyratron 65 being triggered periodically by conventional means 185, 186, and the electrodes 38, 40, being transformer coupled to said discharge circuit. The correction 43 to the anode 38 is described in detail, Fig. 3, (not shown). When rectifier 73 is switched on, condensers 68, 69, charge up to a maximum at which a pulse driver unit 185 actuates a pulse control unit 186 to supply a short positive pulse to the thyratron grid 87a, condensers 68, 69, then discharge, and the process is repeated. The condenser discharge current pulses, in flowing through the primary winding P of the saturatable core transformer M, produce unidirectional voltage and current pulses in the secondary transformer winding S. This is because, as the pulse increases in P, it produces a voltage in S which rises almost instantaneously to a maximum, at which further voltage rise is cut off by saturation of the transformer core. When the current in P reaches its maximum value and then decreases to zero, no appreciable negative voltage is generated in S, since the transformer core has insufficient time to recover from its saturated state in this time interval. Hence there is impressed between the electrodes 38, 40, of the heater unit the series of unidirectional voltage pulses which produce bursts of ionized particles in the gas flow between these electrodes.
Patent GB-1277319-A (GB)
Title: Apparatus for determining the position of an object
IPC: G01B11/08
Filed: 1970-06-26
Abstract: 1277319 Photo-electric positioning ERNST LEITZ GmbH 26 June 1970 [3 July 1969] 31028/70 Heading G1A [Also in Divisions G2 and H4] A device for determining the position of an object 12, Fig.1, includes a projector 1 and a first concave reflector 7 forming a first image 9 on the object of a mark, a second concave reflector 6 forming a second image of the first image on a reference position 10 and wherein said two concave reflectors 6, 7 are coaxial and facing adjustment of a workpiece 12 until the image coincides with the reference mark on diaphragm 10 results in the correct positioning. In a second embodiment, Fig.2, the mark 20 is oscillated at frequency f 1  by an electromagnetic plunger 35 driven by oscillator 27. The image is focused on diaphragm 21 which is oscillated perpendicularly to the first oscillation at a frequency f 2  derived from oscillator 28. Photocell 22 receives the image and signals of components 3f 1 , 3f 2  are separated by band pass amplifiers 25, 26 and the displacement of the image measured by phase sensitive rectifiers 23, 24 which receive reference signals from the oscillators 27, 28. The resulting outputs indicative of the object displacement in x and y directions are displayed and the object moved manually or automatically. In further embodiment Figs.3, 5 (not shown), the mark is produced by a centrally apertured plate or a light emitting diode and the image is rotated by reflection through a rotating prism, reflection at an offset rotating mirror, or refraction through a rotating inclined glass plate or wedge. In a modification Fig.6 (not shown) the image is deflected away from the optical axis of the condenser lens by two plane mirrors and the lens-mirror combination is then rotated about the optical axis. In another embodiment Fig.7 (not shown), the light projector is mounted on a flexible bar which is caused to oscillate by a rotating magnetic field. Reference pulses for the rectifiers are provided by magnets mounted on the light projector energizing stationary magnets. In the rotating image embodiments the reference mark is provided by a cruciform slit or by a series of concentric rings. The former requires a 1:1 mark space ratio square wave output from the photo-cell to indicate correct positioning and the latter allows successive adjustments of increasing accuracy to be made. Infrared light may be used.
Patent GB-184732-A (GB)
Title: Improvements in or relating to guards for fire grates or the like
IPC: F24B1/192
Filed: 1922-03-20
Abstract: 184,732. Cullinane, W. March 20, 1922. Fire-guards.--In a fire-guard of the kind which slides vertically on runners in a dust-guard, the runners f extend above the dust-guard to obtain an increased range of adjustment. The frame h of the guard n is provided with members g which engage in the guides or runners f. A hingeplate q maintains the guard in the fully-raised position..
Patent GB-469924-A (GB)
Title: Improvements in or relating to edging strips
IPC: A47B95/04
Filed: 1936-11-13
Abstract: 469,924. Upholstery trimmings. SOC. ANON. VIRALU. Nov. 13, 1936, No. 31102. Convention date, Nov. 14, 1935. [Class 141] An edging strip for use in connection with upholstery or the like includes a strip of flexible material such as passe-menterie, artificial leather, natural leather, waxed cloth, linen fabric, or the like, the edge portions of which are folded to form the finished strip, one or both of said edge portions being formed with recesses, apertures, serrations, or the like along the whole length of the strip. The strip 1, formed with serrations 2 along the whole of one edge, is coated on one face with an adhesive 5 and the edges are folded over reinforcing elements 3, formed, for example, of paper, cotton, hemp, rubber, wires, or the like to form the edging shown in Fig. 3. The serrations allow the two exterior layers of the strip to be secured directly to each other. In a modification, the adhesive is applied only to the margins of the strip, both edges of which are serrated, the width of each band of adhesive being preferably one-third of the width of the strip. The marginal portions are then folded over reinforcing strips 3, Fig. 7, after which they are folded again to form the strip shown in Fig. 10. An auxiliary filling strip 4, Fig. 12, of suitable material may be interposed between the folds, or both the strip 4 and the reinforcing strips 3 may be dispensed with. The serrations, recesses, or apertures in the edge of the strip may be cut out, or the strip may be made, as for example by weaving, so that the serrations &c. are present.
Patent GB-800098-A (GB)
Title: Improvements in or relating to multi-stage axial-flow compressors
Inventor: HART RAYMOND
IPC: F01D9/04
Filed: 1955-10-31
Abstract: 800,098. Axial-flow compressor bladed stator casing. ROLLS-ROYCE, Ltd. Oct. 18, 1956 [Oct. 31, 1955], No. 31125/55. Classes 110 (1) and 110 (3). A stator for a multi-stage axial-flow compressor comprises a fully tubular thin-walled casing 12 and within the casing an assembly of axially-spaced rows of stator blades 13 and spacer rings 14 between the rows of blades, the blades having axially- and circumferentiallyextending root portions 16 which interlock at their axially-spaced edges with the spacer rings so as to retain the blades in position axially and radially, each of the spacer rings having at its axially-spaced edges flange portions 18 which extend axially over the blade roots 16 and in contact with the casing, means which co-operate with the flanges 18 being provided so as to secure each spacer ring to the casing. The stator casing comprises an end ring 10 having a flange 10a which is secured by bolts 15 to a pair of flanges 12a of the casing 12, the bolts passing through tapered bushes secured in the flanges 12a. The spacer rings 14 are of channel section, the side walls 14a of which are recessed so as to receive flanges 17 formed at the sides of the blade roots 16. The side walls 14a of the spacer rings are also formed with axially- and circumferentially-extending flanges 18 which are of scalloped form and are disposed adjacent the inner surface of the casing 12, the flanges 18 extending over the blade roots 16. Holes 20 are formed in the portions of the flanges 18 which are not cut-away and bolts 22 extend through the holes 20 and aligned holes in the casing 12 and engage square nuts 23 which are disposed between the flanges 18 and the blades' roots 16. Certain of the non-cut-away portions of the flanges 18 have two holes 20, 21 formed therein, and the corresponding nuts 23 are circumferentially-extended and are each provided with a plain bore 24 as well as with a screwed hole. Dowel pins 28 pass through the holes 21, corresponding holes in the casing 12 and into the bores 24, the dowel pins having flanged heads 28a which are secured by the adjacent bolts 22. The extended nuts 23 are formed with radially-inwardly-projecting lugs 27 which engage between pairs of blade. root portions 16. Some of the nuts 23 may also be provided with axially-projecting dogs which engage recesses formed in the spacer ring 14 lying adjacent the spacer ring which is secured by the nut 23. The end spacer ring 14 has a plain flange 14b which is secured between the flanges 10a, 12a. The non-cut-away portions of the flanges 18 of adjacent spacer rings are angularly displaced with respect to each other. Specification 622,895 is referred to.
Patent GB-634754-A (GB)
Title: Improvements in or relating to water heating apparatus
IPC: F24D17/00
Filed: 1947-11-26
Abstract: 634,754. Inducing draught ; controlling gas burners. WHITAKER, A. Nov. 26, 1947, No. 31298. [Classes 75 (i) and 126] [Also in Groups XIII and XXXVII] A draught-inducing fan 7 is located in the flue of a water heater with a gas burner 1. The difference in pressures produced on opposite sides of a diaphragm 13 when sufficient water flows to the heater through a supply pipe containing a venturi 10, moves the diaphragm and closes the switch 15 to energize the fan motor 8. The resultant reduction in pressure in the flue 6 is transmitted through a tube 16 to one side of the diaphragm 18 the other side of which is subject, through the tube 17, to atmospheric pressure. The gas valve 20 is thus opened, and the burner 1 is ignited by a pilot burner 23 with which is associated a safety valve operated by a bimetallic element 24 heated by the burner 23.
Patent GB-424706-A (GB)
Title: Improvements in direction-indicators, or light-directing means, for motor cars and like vehicles
IPC: B60Q1/34
Filed: 1933-11-10
Abstract: 424,706. Mechanical switches without quick action. WILCOX, E., 44, Heyes Lane, Timperley, Cheshire. Nov. 10, 1933, No. 31317. [Class 38 (v)] [See also Groups XXXVIII and XI] A ball - mounted switch for selectively lighting pairs of lamps in a direction indicator comprises a spherical member 29 carrying a hemispherical conducting plate 29<x> which is moved to complete the circuits between pairs of the leads 32-35 to the lamps and the lead 37 to the battery. The switch is controlled by the handle 30 which is moved along the slots shown in the plate 31.
Patent GB-992701-A (GB)
Title: A circuit arrangement for the delayed transmission of electrical pulses
IPC: G07F9/10
Filed: 1961-08-31
Abstract: 992,701. Pulse delaying circuits. TELEFUNKEN PATENTVERWERTUNGSG.m.b.H. Aug. 31, 1961 [Sept. 3, 1960], No. 31360/61. Heading H3T. A pulse delaying circuit comprises a capacitor 3 charged from the signal source 9 via diode 8 and discharged by the rear flank of a synchronizing pulse fed via diode 6, through a load circuit 11. As described, the potential at point 7 is normally clamped by diode 8. Capacitor 3 charges via diode 8 when a negative clock pulse is applied to terminal 5 and a negative signal pulse simultaneously applied to terminal 1. Diode 6 becomes conductive during the rear flank of the clock pulse at terminal 5 rendering diode 8 non-conductive and discharging capacitor 3 through diode 4 and transistor 14 in the load circuit. Fig. 4 shows the invention applied to a bi-stable circuit. The state of the circuit is changed when the rear flank of clock pulses at terminals 5 coincide with a signal pulse from a diode network 9. The diodes 15 reduce the loading on the diode network 9.
Patent GB-1049126-A (GB)
Title: Improvements in or relating to foamed plastics
Inventor: BERNSTEIN CARL
IPC: C08G18/48
Filed: 1963-08-08
Abstract: Polyesters are prepared by esterifying (1) an adduct of a polyhydric alcohol having at least 3 OH groups with ethylene oxide or with ethylene oxide and propylene or butylene oxide, with (2) a polycarboxylic or water-immiscible higher molecular weight monocarboxylic acid, the adduct having 10 to 22 milli-equivalent of OH groups per gram and the polyester having an OH number of 280-800. Mixtures of similar esters having lower OH numbers with polyhydric alcohols having 3-6 OH groups may also be used for preparing polyurethane foams. Suitable polyhydric alcohols are glycerol, trimethylol propane, triethylol propane, trimethylolethane, triethanolamine, hexanetrols, pentaerythritol, dipentaerythritol, polyglycerols, sorbitol and mannitol.  Specified acids are adipic, phtallic, ter- and iso-phthallic, trimellitic, chlorendic, naphthalene dicarboxylic, lauric, myristic, palmitic, oleic, tall oil, linoleic and ricinolic acids.  In the examples the polyesters prepared are (A) phthallic acid ester of trimethylol propane/ethylene oxide adduct, and (c) phthallic acid/tall oil fatty acid ester of glycerol/pentaerythritol/ethylene oxide adduct.ALSO:Polyesters suitable for preparing poly-urethane foams are prepared by esterifying (1) an adduct of a polyhydric alcohol having at least 3 OH groups with ethylene oxide or with ethylene oxide and propylene or butylene oxide, with (2) a polycarboxylic or water-immiscible higher molecular weight monocarboxylic acid, the adduct having 10 to 22 milli-equivalent of OH groups per gram and the polyester having an OH number of 280-800.  Mixtures of similar esters having lower OH numbers with polyhydric alcohols having 3-6 OH groups may also be used for preparing polyurethane foams. Suitable polyhydric alcohols are glycerol, trimethylol propane, triethylol propane, trimethylolethane, triethanolamine, hexanetrols, pentaerythritol, dipentaerythritol, polyglycerols, sorbitol and mannitol.  Specified acids are adipic, phthallic, ter- and iso-phthalic, trimellitic, chlorendic, naphthalene dicarboxylic, lauric, myristic, palmitic, oleic, tall oil, linoleic and ricinolic acids.  Suitable isocyanates, blowing agents, catalysts and emulsifying agents for polyurethane foam are listed. In the examples the polyesters prepared and converted into polyurethanes are (A) phthalic acid ester of trimethylol propane/ethylene oxide adduct, and (c) phthallic acid/tall oil fatty acid ester of glycerol/pentaerythritol/ ethylene oxide adduct.
Patent GB-299786-A (GB)
Title: Improved device for controlling and actuating the delivery doors of silos
IPC: B65D90/58
Filed: 1928-10-30
Abstract: 299,786. Servo-Frein Dewandre Soc. Anon. Oct. 31, 1927, [Convention date]. Operating doors pneumatically.-Silo doors 16, actuated through rods 16<b> from a shaft 15 rocked by the movement of a piston in a cylinder 2 supplied with fluid through a valve chamber 1 from a supply pipe 3, are adjusted by a hand control 18. The control 18 is connected to a lever 7 mounted on a pivot 11 projecting from a bell-crank 10 pivoted on a pin 12 and connected by a link 13 to an arm 14 projecting from the shaft 15. The other end of the lever 7, which is formed as an eye through which the pin 12 passes, is connected by a link 8 to a lever 6 actuating the supply valve. This valve, Fig. 3, has a member 4 normally closing the supply passage and a member 5 that closes the outlet. A spring 20 normally maintains the hand control in its highest position. On moving the control downwards to a desired position the levers 7 and 6 are rocked about their pivots and the valve 5 closed and the valve 4 opened; fluid passes into the cylinder and causes the shaft 15 to be rocked and the silo doors opened; the arm 14 is raised and the bell-crank member 10 rocked through its connection therewith by the link 13. As the point 17 of the lever 7 is held stationary by the hand control 18 the lever 7 is caused to rock about this point actuating the valve through the lever 6 to close the 'supply member 4. The piston then remains stationary in the cylinder with the door open the required amount. When the hand control is allowed to return to its original position under the action of the spring 20 the lever 7 swings about its pivot 11 and the outlet valve 5 is actuated permitting the piston to fall in the cylinder 2 and the door of the silo to close. Specifications 232,738 and 256,560, [both in Class 103 (i), Brakes &c.], are referred to.
Patent GB-511006-A (GB)
Title: Weighing scales for compounding formulas
IPC: G01G1/36
Filed: 1938-11-01
Abstract: 511,006. Weighing-apparatus. QUIDAS, F. W. Nov. 1, 1938, No. 31570. Convention date, Nov. 16, 1937. [Class 143] In a weighing scale for weighing the ingredients of a mixture, a scale beam 13 mounted on a pedestal 11 carries a removable scale pan 17 on one arm and, on the other arm, carries a removable elongated notched plate 24 on which slides a poise weight 25 having means 28 to engage the notches. the notches being spaced to correspond to the weights of the various. ingredients to be compounded. The names of the ingredients are inscribed below the notches which are numbered to indicate the sequence in which the ingredients should be weighed and compounded. The plate 24 may also bear notches on the lower edge for use with a second formula imprinted on the back of the plate. The plate may be replaced by similar plates for other formulae. The notches on opposite edges may correspond to different systems of weight. In a modified construction, the upper notched part of the plate is slidable' on the lower part to permit of increase in the amount of material which may, be weighed. The sliding poise weight 25 has its centre of gravity located directly over its detent 28.
Patent GB-283098-A (GB)
Title: Improvements in or relating to toothed wheels
IPC: F16H55/08
Filed: 1927-11-24
Abstract: 283,098. Read, W. G., Barnes, J., and Kermode, G. N. Nov. 24, 1927. Toothed wheels. - A geometrical method of ascertaining the form of the identical faces and flanks of the teeth of gearing of the kind in which an inner wheel gyrates or rotates in mesh with a larger outer wheel is described. The pitch lines b, d, contacting in the point f, of the two wheels, on centres c, e respectively, are drawn and pitch distances b<3>, d<3> are set out thereupon. Straight lines j join the corresponding points b<3>, d<3>. A third circle g midway between band d and contacting therewith at the point f is drawn. From the centre e, radial lines d<4> are drawn through the points d<3>. A transparent strip k, Fig. 4, is pivoted about the point e and a line k<1> radial to the centre is drawn upon it. This line is then registered successively with each of the lines d<4> and in each position the point at which the line j intersects the circle g is marked upon the strip. A curve n is thus produced, which is used in the manner indicated in Fig. 4 to determine the flanks and faces of the wheels in both gear-wheels. The cutter for producing the teeth is based upon the curve n in the usual manner. A constructional form of the gearing is shown in which the inner wheel is carried loosely on an eccentric on the driving. shaft and is permitted to gyrate by stationary pins engaging circular holes therein, so that the outer wheel is driven at reduced speed.
Patent GB-1072120-A (GB)
Title: Light fixture shield
IPC: F21V17/10
Filed: 1964-08-04
Abstract: 1,072,120. Lighting fittings. SMITHCRAFT CORPORATION. Aug. 4, 1964 [Jan. 31, 1964], No. 31614/64. Heading F4R. A light diffusing shield 10 of the type adapted to be inserted from below into the rectangular opening of a housing 20 and supported by two opposite side edges 12 on ledges 23 of the housing has projecting end tabs 15 which overlie end support surfaces 22 on the housing to prevent the end portions of the shield intermediate the sides from sagging, the shield being of such dimensions that when it is grasped at the middle of one side edge 12 and the other side edge is inserted into the housing and supported on the corresponding ledge 23 the sagging of the ends of the shield is sufficient to draw the projecting tabs 15 towards one another to clear the ends of the housing and allow the shield to be inserted fully into the housing, subsequent lowering of the first side edge 12 on to its ledge 23 reducing the sag so that the tabs move apart to rest on the surfaces 22. The shield is made of plastic material by extrusion moulding, the end members 13 being manufactured separately and cemented into position.
Patent GB-814381-A (GB)
Title: Flue systems for closed heating appliances
Inventor: CARNE JOHN BRITTON
IPC: F24C15/00
Filed: 1955-11-04
Abstract: 814,381. Chimneys. GAS COUNCIL. Oct. 24, 1956 [Nov. 4, 1955], No. 31643/55. Class 25 In a building, e.g. a block of flats, closed heating appliances such as space heaters 2A, multi-point water heaters 2B, closed drying cabinets 2C and circulator water heaters 2D are connected by fresh air inlet and vitiated air outlet ducts 9 to a flue 1 having air inlets 5 at its base. The air inlet and outlet ducts 9 of the drying cabinet have valves 17, 18 connected by linkage to the door of the cabinet so that when the door is opened the valves are closed. Specification 814,382 [Group XIII] is referred to.
Patent GB-1314756-A (GB)
Title: Apparatus for the transloading of floating containers
IPC: B63B27/16
Filed: 1971-07-06
Abstract: 1314756 Loading floating containers on to ships FRIED KRUPP GmbH 6 July 1971 [7 July 1970] 31723/71 Heading B8Q Floating containers 3 are lifted out of the water by a fixed hoist 6 and a spreader 7 and are deposited on a movable platform 16. The latter is now moved longitudinally of the ship to the position shown and the container 3 is removed from the platform for transport to a storage location by a travelling crane 10. The platform 16 is driven by cables. A hatch 19 is provided so that containers may be loaded directly on to the platform from a crane on the quay.