baber/WOPTO huggingface dataset:
Patent GB-1414732-A (GB)
Title: Method of and a dental tool for forming surface irregularities  on the plate of a dental prothesis
IPC: A61C13/38
Filed: 1973-03-27
Abstract: 1414732 Supply circuits for welding apparatus EURO-CERAM 27 March 1973 [28 March 1972] 14640/73 Heading H2H [Also in Division B3] Surface irregularities are formed on a dental plate, to facilitate the joining thereof to a ceramic or resin covering, by contacting the plate with an electrode connected to a circuit which produces voltage pulses having steep leading flanks. The surface irregularities on the plate may comprise protuberances formed by localized deposition of a consumable electrode or cavities formed by a non-consumable electrode. Gold may be electrolytically deposited on the plate after the desired number of protuberances has been formed. The electrode and plate are connected to the terminals of a secondary coil of a transformer T2 whose primary has several take-off points 3, 4, 5 enabling adjustment of the voltage at the secondary terminals 1, 2, e.g. 3-8 volts. The transformer T2 is connected to a bridge of rectifiers CR4- CR7 having terminals 6, 7 connected to an alternating voltage source U and terminals 8, 9 connected to a thyristor Q5. The gate of the tluzstor Q5 is controlled by a circuit comprising transistors TR1-TR4 connected via a rectifier circuit CR0-CR3 to a transformer T, which is connected to the voltage source U. When the voltage at a negative output, terminal 15 of the rectifier circuit is above a certain value, the transistor TR1 is turned on and a condenser C3 connected to the transistor TR3 is discharged. The transistor TR1 is blocked and the condenser C3 recharged when the voltage at the terminal 15 is below the positive voltage supplied to the transistor base via a resistor R2. When a variable voltage applied by a potentiometer P1 to the base of the transistor TR3 is lower than or equal to the voltage at the base of the transitor TR2, the latter is turned on whereby the transistor TR4 is made conductive which triggers the thyristor Q5 to produce an impulse at the electrode having a steep front flank 16 1 . A microammeter G1 is connected in the circuit.
Patent GB-412031-A (GB)
Title: Improvements in or relating to luminous electric discharge tubes
IPC: H01J61/54
Filed: 1933-05-22
Abstract: 412,031. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and RYDE, J. W., c/o General Electric Co., Wembley, Middlesex. May 22, 1933, No. 14760. [Class 39 (i).] Luminous tubes with a discharge in high-pressure metal vapour which arises from a body of metal strongly heated during the discharge but not forming an electrode are provided with one or more auxiliary electrodes facilitating starting of the discharge and each formed by a wire 5 sealed through the wall 1 of the tube and surrounded by a glass sheath 6. The sheath extends from the wall 1 to near that end 7 of the wire 5 adjoining the main thermionic electrode 2 and does not touch the wire 5 at the end 7. The wire 5 is connected to the other main electrode or another auxiliary electrode through a resistance of 50,000 ohms. Specification 384,119 is referred to.
Patent GB-845640-A (GB)
Title: An improved flower bloom support
IPC: A01G5/00
Filed: 1959-05-01
Abstract: 845,640. Attachments for flowers. SCHUMM, E. May 1, 1959 [Feb. 14, 1959], No. 14859/59. Class 6(2). A member for holding together a flower bloom comprises a ring 1 of resilient material, preferably a synthetic resin such as polystyrene, formed on its lower edge with inwardly projecting claws 3 for gripping the bloom. The ring may be split so that it can be introduced laterally on to the plant.
Patent GB-105203-A (GB)
Title: Improvements in Furnace Arches and Bricks therefor.
Inventor: DEHN FRANK BERNHARD
IPC: F23M3/00
Filed: 1916-10-19
Abstract: 105,203. Dehn, F. B., (American Arch Co.). Oct. 19, 1916. Arches.-Furnace arches are built up of reversible bricks so formed that, when the bricks are all laid the same way up, the arch has a flat surface on one face and a corrugated one on the other, and when adjacent bricks are laid in reversed relation, channels are formed through the arch. In the case of a locomotive fire-box, the arch consists of three spans a, b, c of bricks f supported at both ends on water-tubes 7, and side wings d, e of bricks g supported at one end on the outer tubes 7 and resting at the other against the walls of the firebox. Each brick f has a pair of seatings 11, 12 at each end, so'that the brick can be laid either way up, and on one face portions 13 are cut away to leave a rounded ridge 14. The seatings 11 are somewhat flattened to allow the bricks to accommodate themselves to variations in distance between the water-tubes, and the seatings 12 are formed by end ridges, beween which the brick is cut away more deeply at 12<a>. One end of the brick may be corrugated, as shown in Fig. 8, and the formation is such that, when adjacent bricks are placed end to end in reversed positions, the corrugations will interfit. The wing bricks g are generally similar in form to the bricks f, but are tapered and have seatings at one end only. The opposite end is rounded to provide a single point of support against the side wall of the fire-box. The bricks may bo arranged all the way up, as shown at the right-hand side of Fig. 15, so that one surface of the arch is plane and the other corrugated, and either the plane or the corrugated surface may be uppermost; or, as shown at the left-hand side, adjacent bricks may be reversed, so that the cutaway portions 13 form channels h through the arch. The side wings may be of the same length as the middle spans, or may be shorter as shown in Fig. 3.
Patent GB-446313-A (GB)
Title: Improvements in or relating to cutting appliances for cloth and like materials
IPC: A41H9/00
Filed: 1935-05-22
Abstract: 446,313. Shaping the bottom of a garment. SEVILLA, A. E., 8, Harehills Avenue, Leeds. May 22, 1935, No. 14952. [Class 141] [See also Group XXV] A cutting-appliance for shaping the bottom of a garment consists of hand or electricallyoperated shears which are mounted for vertical adjustment on a stand or support. In the form shown, the pivot pin 3 of the hand shears 1 is extended and bears in a supporting arm 2 which is slidable on a vertical rod 13 provided with a base 14 and a pin tray 20. The pin 3 is screwed into the upper blade 5 of the shears until a shoulder thereon engages a countersunk recess in the lower blade 4 to hold the blades together ; a lock nut 8 is then screwed on. In modifications, the shears may be attached to the arm 2 by a ball joint ; the arm 2 may be vertical or the arm 2 and rod 13 may be telescopic. The appliance may be fixed adjacent a dummy carrying a garment and the dummy revolved, or the dummy may be fixed and the appliance moved round it either on runners or on an arm pivoted about the stem of the dummy. According to the Provisional Specification, the blades of the shears may be pressed together by a spring mounted on the pin 3 between the arm 2 and the lower blade 4 and adjustable by a collar slidable on the pin.
Patent GB-181234-A (GB)
Title: Oven wall construction
IPC: A21B1/00
Filed: 1921-05-30
Abstract: 181,234. Haller, F. C. May 30, 1921. Bakers' ovens.-The walls of bakers' and other ovens are formed of skeleton metal framework filled in with light heat-insulating material, preferably magnesia in the form of blocks 9, and the inner (and outer) surface is formed of asbestos or other heat-insulating cement 13 on a backing of metal lath material 12. The framework is composed of vertical channels 7 riveted together in pairs and connected by horizontal members. The blocks 9 are reinforced with heavy wire net and are of such a length that they can be inserted after the framework is built, the spaces at their ends being filled with heat-insulating packing 11. Specification 176,829 is referred to.
Patent GB-440239-A (GB)
Title: Improvements in and relating to the production of photographic sound records
IPC: G11B7/00
Filed: 1935-05-23
Abstract: 440,239. Optical sound recording and re-recording apparatus. KOLB, O. K., 39, Beverley Court, Wellesley Road, Chiswick, London. May 23, 1935, No. 15021. Addition to 439,631. [Class 40 (ii)] Relates to an optical sound recording or re-recording system as described in the parent Specification in which a single oscillograph 7 or like electrooptical instrument controls a plurality of beams from one or more light sources 1 so as to produce two or more substantially identical records of the variable area or variable density type on two or more separate or separable films 17, 18. According to the invention, a plurality of changeable primary masks 2, 3 are disposed so that any one of the apertures 2a-2e in mask 2 or 3a-3e in mask 3 can be brought into the path of the beams 4, 5, thus permitting selection of the type of record to be produced, i.e. variable area, multiple variable area or variable density type. The discs 2, 3 are mounted on spindles geared together and are provided with individual indexing means consisting of recessed discs 23, 24 co-operating with spring-controlled detent pawls 23a, 24a. When recording variable density records the discs 2, 3 are rotated so as to bring the rectangular apertures 2e, 3e into the path of the beams 4, 5 and a cam 19 on the spindle 2f is arranged to press on the tappet lever arm 20a so as to revolve spindle 20 against spring 20b and bring the cylindrical lenses 21, 22 into the path of the reflected beams 4a, 5a. Instead of rotatable discs as shown, the masks may be formed as slides adapted to be moved in a straight line across the light beams or each mask may be formed as a drum surrounding a light source and condensing optical system, the drum being formed of a hollow polyhedral or pyramidal shape or with a surface of revolution such as a cone, conoid or cylinder, the sides being perforated to form the mask apertures. Specification 428,623 is referred to.
Patent GB-160697-A (GB)
Title: Improvements in and relating to chairs and other seats for motor cars, ships, trains and the like
IPC: B60N2/14
Filed: 1920-06-02
Abstract: 160,697. Johnston, G. W. P. June 2, 1920. Seat adjustments; revolving seats; spring mountings for seats.-A vehicle seat comprises a post c adapted to slide along a guideway b, and means for yieldingly securing the post in any desired position on the guideway to enable the chair to be tilted. The spring-pressed rod f, within the post c, carries a toothed member h engaging a rack d on the underside of the guideway, and the members h, d can be disengaged by actuating the lever l. The seat proper p carries a socket u fitting over the post c, a rotating and sliding motion being allowed between these parts b the provision of a wide annular groove v and a set-screw t.
Patent GB-272500-A (GB)
Title: Improvements in and relating to methods of and apparatus for treating filaments for electric incandescent lamps or the like
IPC: H01K1/54
Filed: 1927-06-07
Abstract: 272,500. British Thomson-Houstom Co., Ltd., (Assignees of Inman, G. E.). June 9, 1926, [Convention date]. Residual gases.- Gettering material for lamps is coated upon coiled filaments by projecting them into a confined space by a blast containing the coating-material. A quantity of filaments 11 are placed in a hopper 10 above a spray nozzle 26 into which compressed air is fed by a pipe 27, causing the coating- material to be drawn up from a vessel 19 and blown with the filaments into a chamber 35. The needle of the spray nozzle continues into a wire 32 which is bent round and attached to an operating lever 33. The chamber 35 is carried by a pivoted arm 37 enabling it to be swung aside. A cover 41 is secured by set-screws 46 in the top of the chamber 35 so as to retain the filaments, while gases are allowed to escape through a gap around the cover. Specification 270,733 is referred to.
Patent GB-847442-A (GB)
Title: Improvements in percussive rock drills
Inventor: MORRISON WILLIAM ANDREW
IPC: E21B4/14
Filed: 1958-05-12
Abstract: 847,442. Percussive rock drills. INGERSOLLRAND CO. May 12, 1958, No. 15213/58. Class 85. In a percussive rock drill comprising a valve 14 for controlling the supply of pressure fluid to a piston 16 reciprocating in a housing, the housing is formed by a sleeve 12 slidably mounted within an outer casing 10 and held therein by retainers 22, 24. The valve 14 consists of ported cage members 34, 36 slidably fitted in the casing 10 and a valve member 48 mounted for rocking movement about a tube 50. The piston is retracted by air fed to its surface 78 through passages 42, 54, 56, 58 and 60 until communication is established with exhaust grooves 66. The valve member 48 is then actuated to reverse the supply of pressure fluid and drive the piston forwardly until it moves clear of the tube 50 and establishes communication with the exhaust passages 62, 64. The valve is held against rotation by a pin 51 but may be mounted for rotation relative to the sleeve by providing the valve with a groove to establish communication between the ports 54, 56, (see Fig. 4 not shown).
Patent GB-1510483-A (GB)
Title: Coated powders and electrostatic deposition thereof
IPC: C03C8/14
Filed: 1975-04-14
Abstract: 1510483 Coated frit particles FERRO CORP 14 April 1975 [6 May 1974] 15303/75 Heading C1M A powder for use in electrostatic deposition (e.g. on metal substrates) comprises vitreous enamel particles which have been coated with a liquid organopolysiloxane which has then been cured to solid form, the liquid organopolysiloxane having the formula where each R (which may be the same or different) is H or defined hydrocarbyl radicals of up to 10 carbon atoms, each R, is-R or -OH, and n is an integer (e.g. 5-30). The curing may comprise heating to 125-300C. for 1-20 minutes, but catalytic curing may be employed. Preferably, at least one in two of the substituents R are H, the balance being methyl. Preferably, the organopolysiloxane reacts with the vitreous particles. The coated particles preferably comprise 0À02-2% by weight of organopolysiloxane coating, and are preferably such that at least 85% by weight of the particles passes a 200 U.S. Standard Sieve. The coated particles are suitable for electrostatic deposition on to a metal substrate (e.g. iron, steel or aluminium), the particle-coated substrate then being fired (e.g. at 1150-1350F) to fuse the vitreous particles to a smooth coating, and drive off the organic constituents of the organopolysiloxane.
Patent GB-581255-A (GB)
Title: Improvements relating to synthetic resins
IPC: C08F18/12
Filed: 1944-08-11
Abstract: Copolymerizing isopropenyl acetate with a vinyl ester Preferred vinyl esters are those of monocarboxylic acids which do not contain an ethylenic double bond.  Specified are vinyl acetate, propionate, n-butyrate, benzoate and chloracetate.  It is preferred to use equimolecular proportions although a ratio of 1 : 4 of isopropenyl ester : vinyl ester may be employed.  The copolymers may be produced by bulk, solvent or emulsion polymerization with or without dispersing agents.  Catalysts such as organic peroxides (e.g. benzoyl, acetyl or lauroyl peroxide), hydrogen peroxide, a perborate (e.g. an alkali metal perborate), or a persulphate (e.g. an alkali metal persulphate), may be employed.  Films and coating solutions may be prepared from the copolymers.  The copolymers may be de-esterified and the de-esterified products condensed with aldehydes.  In examples, benzoyl peroxide was used as catalyst for producing (1), (2), (3) vinyl acetate/isopropenyl acetate copolymers, (4), (5) vinyl propionate/isopropenyl acetate copolymers, (6) vinyl benzoate/isopropenyl acetate copolymer.  In example (7), an isopropenyl acetate/vinyl acetate copolymer in methyl alcohol was treated with sodium hydroxide in methyl alcohol to give a de-esterified product.  The product was condensed with (8) acetaldehyde and hydrochloric acid and (9) n-butyraldehyde and hydrochloric acid.
Patent GB-164333-A (GB)
Title: Improvements in or relating to the pneumatic suspension of vehicles or the like
IPC: B60G11/27
Filed: 1921-06-02
Abstract: 164,333. Mercier, H. June 2, 1920, [Convention date]. Pneumatic springs. - Consists of an improved construction of pneumatic suspension for vehicles and the like, of the type having one or more auxiliary chambers the communication of which with the casing is controlled by the movement of the device, such as is described in Specification 27988/08. The auxiliary chamber 3, Fig. 1, communicates with the upper chamber 6 of the casing cylinder 2 through a conduit 5 in the piston 1, thus giving maximum resiliency when the conduit registers with the opening 4 to the chamber 3, the communication between the chambers being first closed, then opened, then closed again during each stroke of the piston. Alternatively, the piston may be made hollow and act as the auxiliary chamber, a fixed guide 9, Fig. 4, closing the piston orifice 10 except when the reduced part 9<1> of the guide registers therewith. Or a conduit may connect to the cylinder at two different levels and establish communication only when a side orifice in the piston registers with the lower opening. A regulating leak 7 is provided in each form of apparatus.
Patent GB-119127-A (GB)
Title: Sighting-apparatus for use in Dropping Bombs from Aircraft.
Inventor: COX FREDERICK JOHN
Filed: 1917-10-23
Abstract: 119,127. Cox, r. J. Oct. 23, 1917. Sights and methods of sighting. - Consists in a bomb-dropping sight whereby the sighting angle is determined by observat i o n s taken when a trial bomb is dropped. The apparatus comprises a sighting-telescope pivoted near the top to a hanging frame and connected at the bottom to a slide adjustable horizontally in a second slide which itself is adjustable horizontally in the frame. In the construction shown, the telescope 8 is pivoted at 9 to a frame 10, and is also connected to a slide 14 mounted horizontally in a second slide 15 which slides horizontally in the frame 10. In use, the parts are first adjusted, as shown in Fig. 1, with the telescope vertical and the. two slides 14, 15 in the zero position. When the aeroplane 27, Fig. 7, is vertically over the target 28 a bomb is dropped, and the telescope is turned to keep it on the target by actuating the slide 15 which carries with it the inner slide 14, as shown in Fig. 4. As soon as the bomb reaches the ground, the telescope is turned on to the burst 29 by operating the inner slide 14 only. The outer slide 15 is then returned to its zero position, whereby the telescope is set at the correct angle for bomb dropping.
Patent GB-227780-A (GB)
Title: Improvements in or relating to carburetors for automobile and other engines
IPC: F02M1/16
Filed: 1924-06-25
Abstract: 227,780. Stapelle, J. Jan. 15, 1924, [Convention date]. Spray carburettors.-The main nozzle a is located in a choke tube f forming an integral part of, or rotatably adjustable within, the mixture conduit e. Primary air in adjustable quantity is admitted through an inlet c, and secondary air, also adjustable, through an inlet h leading to a chamber g which surrounds the conduit e and communicates therewith through apertures i, j situated in the neighbourhood of the nozzle outlet b. These apertures may deliver the air at right angles to the nozzle or obliquely above it. The fuel conduit k feeds also an auxiliary nozzle m located in the chamber g and surrounded by a sleeve n having air inlet apertures at o, r. The mixture from the sleeve n is conducted' to a point above the throttle p by an adjustable tube q. The outlets of the main and auxiliary nozzles may be enlarged to retain fuel to facilitate starting. The apertures i, j and r may be at different levels and the choke tube f may be surrounded by an adjustable sleeve to control the apertures i, j. When the choke tube is rotatable the wall of the conduit e has ports corresponding to i, j. The chambers e, g may be supplied with heated compressed air.
Patent GB-269010-A (GB)
Title: Improvements in or relating to show cards
IPC: G09F1/08
Filed: 1926-06-18
Abstract: 269,010. Forbes, W. J. Lindsay-, and O'Kelly, E. A. June 18, 1926. Cards for displaying. - Boxes or cartons used for packing goods are attached to show-cards by a dummy filling D of wood of rectangular cross-section. The filling D is fitted lengthwise in the carton, and is attached to the card A by screws or nails F passing through the carton. The lid C of each carton may also be nailed to the wood filling D. Additional means for attaching the cartons to the card may be employed, such as paper-fasteners, staples, sewing or adhesive.
Patent GB-874046-A (GB)
Title: Photographic transfer processes and products for use in such processes
IPC: G03C8/30
Filed: 1959-05-05
Abstract: 874,046. Photographic image-transfer processes. INTERNATIONAL POLAROID CORPORATION. May 5, 1959 [May 12, 1958], No. 15398/59. Drawings to Specification. Class 98(2) An exposed silver halide emulsion layer is processed between two image-receiving layers to form reversed transfer images in both of them, the images being silver, monochrome by diffusion from a dye or dye intermediate, subtractive multicolour by use of an emulsion layer comprising a plurality of light sensitive portions for the appropriate colours in the form of a screen; or additive by exposure through colour filter screens for this. Drawings (not shown) illustrate these features, there being a container for the processing fluid usually adjacent to the emulsion layer surrounded by the image-receiving layers and supports for these, one of which may be opaque. Separation after exposure and processing, usually with removal of the emulsion layer from the receiving layer on which it was originally coated reveals the images, and numerous variations and operational procedures are described. Six examples concern silver images production and two are directed to monochrome in cyan and yellow respectively, but none of the examples make direct reference to the processing fluid container; thus in Example 1 which follows a description of a silver and silica containing image-receiving layer and a transferdeveloper solution, a wax and silica containing stripping layer is applied to a receiving element and overcoated with a silver iodobromide emulsion, exposed and processed in superposition with another receiving element for two minutes, when separation reveals the two images, that from the backward diffusion having slightly less density than the other one. Specifications 684,591, 684,592, 703,231, 714,412, 730,722, 776,634, 804,972, 804,973, 811,579, 853,480 and 858,673 are referred to.
Patent GB-774453-A (GB)
Title: Improvements in and relating to dynamo-electric machines
IPC: H02K1/26
Filed: 1955-05-27
Abstract: 774,453. Dynamo-electric machines. GENERAL ELECTRIC CO. May 27, 1955 [May 27, 1954], No. 15401/55. Class 35. A rotor for a dynamo-electric machine has closed slots 2 having the walls 7 near the rotor periphery shaped like an inverted V with the legs 7 diverging from the rotor periphery as shown in Fig. 1. The top or radially outward end of each slot has a curved closing portion 6. The angle at which the walls 7 slant away from the peripheral edge is such that for a given air gap flux density a constant flux density is obtained at a given point in the slot teeth. The slot 2 has a narrow neck 3 and a somewhat triangular bottom portion 5 but, if desired, the parts 3 and 5 may continue straight down from part 4 terminating without any variations in dimensions. The entire slot is filled with cast aluas effective conductors or it may be provided with a wound winding or separate bars. Specifications 243,717 and 247,232, [both in Class 35], are referred to.