baber/WOPTO huggingface dataset:
Patent GB-554353-A (GB)
Title: Improvements in or relating to portable motor driven power hammers, and elastic links or yokes suitable for use in such portable motor driven power hammers
IPC: B25D11/12
Filed: 1942-03-18
Abstract: 554,353. Rubber tension-springs. STEVENS, A. H. (Independent Pneumatic Tool Co.). March 18, 1942, No. 3629. [Class 108 (iii)] [Also in Groups XXIII and XXIV] In a portable motor driven power hammer an elastic yoke 7 engages rounded ends 8a, 8b of a passage 8 in an impact piston 4 and extends through parallel slots 6 in the cylinder 5, the ends a of the yoke 7 engaging revolvable bushings 11 of studs 10 on a cross-head 9 which is reciprocated on parallel guide rods 12 by means of a crank-pin 18 on a gear wheel 13 driven by a pinion 15 on the shaft 14 of an electric motor 3 which is controlled by a switch 20. The gears 13, 15 are provided with a grease enclosure by means of a wall 25 and cover plates 27, 28. The yoke 7 is of constant thickness but the looped ends increase uniformly in width from both sides c to the central portion b, whilst the centre of the arm portions d may be widened as at e where they pass through the passage 8. The openings f of the looped ends are larger than the bushes 11 so as normally to provide contact over about 120 degrees. The end of the cylinder 5 is closed by a wall 44 and as the piston 4 passes beyond the slots 6 the air trapped in the cylinder is compressed and slows down the piston. Momentum of the piston extends the yoke 7 beyond the cross-head 9 and the yoke then causes the piston to strike a rapid and powerful blow on the drill steel 37. The ends of the guide rods 12 are slit at 47, 55 and securely held in position by screwed taper plugs 50, 57. Lubricating oil supplied at a passage 61 passes through a port 60 in each guide rod 12 to a wick 64 which supplies outlet ports 66.
Patent GB-435731-A (GB)
Title: A process for refining auriferous material
IPC: C25C1/20
Filed: 1935-02-04
Abstract: 435,731. Refining gold by electrolysis. DEUTSCHE GOLD-UND SILBERSCHEIDEANSTALT VORM. ROESSLER, 7, Weissfrauenstrasse, Frankfort - on - Main, Germany. Feb. 4, 1935, No. 3634. Convention date, Feb. 6, 1934. [Class 41] Material rich in gold but free from, or poor in, platinum is treated as anode in an electrolyte containing hydrochloric acid and, if desired, non-precious metal chlorides, but free from precious metal chlorides, using a current density of about 1200 amps. per sq. metre or higher. Chloride or other halide of copper is preferably present in the electrolyte. Gold and copper together with silver chloride are deposited at the cathode as a sludge. Copper may be removed by treatment with acid. Silver chloride may be removed by treatment with a solvent such as a thiosulphate or ammonia ; alternatively, it may be reduced, for example, by zinc and acid, and the silver dissolved by boiling with concentrated sulphuric acid. Alternatively, the sludge may first be chlorinated either dry or in a suspension ; the chlorides of the base metals are then dissolved out in water or dilute hydrochloric acid. The chlorine may be generated by addition of potassium chlorate and hydrochloric acid to the sludge. The electrolysis may be carried out at 70‹ C. using crude hydrochloric acid of concentration 100 gms. per litre as electrolyte with or without diaphragms. Anode residues are separated from the sludge deposit by sieving or screening.
Patent GB-843033-A (GB)
Title: Improvements in or relating to fluorescent screens for x-ray apparatus and operativecombinations comprising such screens and such apparatus
IPC: G03B42/02
Filed: 1958-02-04
Abstract: 843,033. X-ray apparatus. SIEMENSREINIGER-WERKE A. G. Feb. 4, 1958 [Feb. 16, 1957; Sept. 17, 1957], No. 3664/58. Class 98(1) A fluorescent screen for X-ray apparatus comprises a substantially flat container having one of the broad sides thereof open and composed of a material of low X-ray absorption, a fluorescent layer, a lead glass cover disposed in the opening in the container and means within the container providing water-proofed airproof sealing of the fluorescent layer. As shown, a container 11 of aluminium includes a light permeable plate 14, an opaque layer 15, a layer 17 carrying a fluorescent surface 18 and a lead glass plate 19 in that order in the direction of the X-ray beam. Air and moisture-proof resin material 20 surrounds the peripheries of layers 15, 17, 18, and 19, but is spaced therefrom by protective strips 21. Alternatively, the fluorescent layer may be encased in synthetic material such as polyvinyl chloride. Marks 23 in the layer 15 show up only when a lamp opposite a slot 22 is lit such that the size of the X-ray image may be adapted-by means of an adjustable diaphragm in association with the X-ray tube-to the required size with respect to these markings. A switch may be provided in conjunction with the screen which in one operative position lights the lamp adjacenf the slot 22 and cause a motor to actuate the diaphragm to continuously increase the image size, whilst in the second operative position the switch causes the lamp to light and the diahragm to continuously decrease the image size. Specification 706,378 is referred to.
Patent GB-841513-A (GB)
Title: Improvements in and relating to apparatus for launching mechanical vibrations
Inventor: BRADFIELD GEOFFREY
IPC: G01N29/24
Filed: 1954-03-04
Abstract: 841,513. Ultrasonic inspection devices. NATIONAL RESEARCH DEVELOPMENT CORPORATION. June 6, 1955 [March 4, 1954], No. 3667/57. Divided out of 841,511. Class 40(7). A piezo-electric transducer assembly for launching ultrasonic waves into a cylindrical specimen, e.g. for flaw detection, comprises a plurality, e.g. five, of spaced parallel long narrow bars 61 of piezoelectric material cemented to a common flexible metal diaphragm 62 having a corrugation 63 parallel to and between each two adjacent bars. The bars 61 carry backings 64 which are surmounted by additional piezo-electric bars 65 for evaluation of contact quality as described in Specification 841,511 and each backing 64 (or bar 61) is pivoted at 66 to interconnecting links 74 and to a thrust member 68 slidable against a spring 72 in a guide member 71. The central pair of guide members are fast to a common support plate 73 and the others are pivoted to the plate so that when pressure is applied to the plate all the bars 61 will be pressed against the specimen walls of flexible material, e.g. neoprene, may be attached to the plate 73, to the side of the backings 64 or bars 62 and to the ends of the diaphragm 62 to exclude coupling fluid. The piezo-electric material may comprise barium titanate with or without admixtures such as lead or calcium titanate or zirconates; an advantageous material is stabilized titanate such as barium (84%)-lead (8%)-calcium (8%)- titanate. Suitable dimensions are given.
Patent GB-490288-A (GB)
Title: Improved apparatus for drying by air circulation
IPC: A47K10/48
Filed: 1937-02-08
Abstract: 490,288. Hair, hand, and like drying apparatus. MARTIN BROS. ELECTRIC CO. Feb. 8, 1937, No. 3670. Convention date, May 6, 1936. [Class 81 (ii)] [Also in Group XI] In apparatus for drying the hair, hands, or the like by air circulation comprising outer and inner shells 7, 15, enclosing an annular passage 17 through which air is forced by a circulator such as a centrifugal fan 23, the inner shell 15 is formed in its upper part with one or more apertures 16 provided on one side with longitudinal and substantially radial baffles 27, and at the forward end with transverse baffles 28, whereby air is deflected into the inner shell and recirculated by the fan. Additional baffles 27 are spaced around the passage 17, those on the side where the fan blades are moving upwardly having a greater length than those on the other side in order to compensate for irregular air distribution. Partial recirculation is effected by a conical ring 11 on shell 7 and cool external air is drawn in at E by the action of the baffles 28. A framework 20 within shell 15 supports a gauze 22 and an electrically heated coil 18. The fan 23 has two sets of blades 24, 25, drawing air respectively through the shell 15 and a casing 6 for the fan motor 2. The shell 7 is connected to a two-part casing 4, 3 which encloses the fan and the motor casing 6 respectively, and is connected by screws 5 with a spider 1 supporting the whole apparatus on a stand. The coil 18 has in series with it two additional coils, one or both of which may be short circuited, to increase the heat output, by a contact arm which also controls the motor 2. The contact arm is mounted in a casing connected to one side of the forward end of shell 7, a diametrically opposite casing, containing a reading lamp with a separate switch, being provided.
Patent GB-1421561-A (GB)
Title: Pesticidal thiophosphoric acid esters
IPC: A01N57/14
Filed: 1973-01-25
Abstract: 1421561 Pesticidal thiophosphoric acid esters CIBA-GEIGY AG 25 Jan 1973 [26 Jan 1972 5 Oct 1972 20 Dec 1972] 3799/73 Heading C2P Novel compounds of Formula I where R is methyl or ethyl, R 1  is C 3-5  alkyl, R 2  is C 1-4  alkyl-Z-CH 2 -, where Z is -S-, -SO- or -SO 2 -; -A(CH 2 ) m CN; where R 3  is C 1-4  alkyl, R 4  and R 5  are H or C 1-4  alkyl, m is 1 or 2 and A is -S- or -SO-, n is 0, 1 or 2 and x is halogen or C 1-4  alkyl may be prepared according to one of the following equations where Me is alkali metal, ammonium or alkylammonium, R<SP>1</SP> 3  is H or C 1-4  alkyl and Hal is halogen. In an example the compound (O-ethyl-S-npropyl-O-(4-methylthiophenyl)thiophosphate is prepared by reacting 4-methylthiophenol with O-ethyl-S-n-propyl thiophosphorochloridate. The compounds of Formula I have insecticidal and acaricidal properties and may be used as the active ingredients in conventional pesticidal compositions.
Patent GB-1527651-A (GB)
Title: Preparation of moulds and cores
IPC: B22C9/00
Filed: 1976-01-30
Abstract: 1527651 Shell moulds H G EMBLEM and R D SHAW 25 Jan 1977 [30 Jan 1976] 03807/76 Heading B5A A method of preparing a mould 'or core for casting molten metals comprises coating a destructible or non-destructible pattern 6 with a slurry made up of two liquid components and st least one refractory powder, each liquid component of which is stable but which components when mixed together form a rigid coherent gel 9, wherein each liquid component is discharged towards the pattern as a stream, the two streams 2 and 3 converging adjacent to or on the pattern to mix the liquid components and wherein at least one of the streams includes a refractory powder. A large number of liquid compositions are exemplified and optional additives like gellationdelaying agents are mentioned.
Patent GB-1131841-A (GB)
Title: Improvements relating to electric cable terminations
Inventor: HARDY BERTRAM NIXSON
IPC: H02G15/06
Filed: 1965-01-28
Abstract: 1,131,841. Cable terminations. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. 18 Jan., 1966 [28 Jan., 1965], No. 3817/65. Addition to 940,148. Heading H2E. The cable termination of Specification 940,148 in which a hollow conductive terminating structure 6 is secured to a bared end portion of a fluid cooled cable conductor 1 is modified in that the coolant ducting is constituted by a hollow insulating member 20 surrounding a bared length of the cable coolant retaining layer 3, the duct being closed about said layer at the end of the termination remote from the structure 6. As shown, the end of the cable conductor 1 is squeezed between an insert 5 and the terminating structure 6 which is sealingly secured to a conductive end-housing 9 by means of studs 12 and a co-operating plate 11 and seal 10. Ports 7 in the structure 6 interconnect the cable coolant channel 2 with a duct A connected to a coolant supply pipe 23 fixed in a chamber 22 sealingly secured to the cable coolant retaining layer 3 by means of a collar 24 integral with the layer 3. The chamber 22 is electrically connected 28 to the cable screen 4 which may be of metallic and/or graphited tapes. An alternative seal between the structure 6 and housing 9 provides for thermal expansion (Fig. 2, not shown). An alternative seal between the cable layer 3 and chamber 22 includes a split sleeve (42) (Fig. 3, not shown) clamped by a flange to the chamber, wire (45) and epoxide glass bandaging (43) being wrapped around the cable shield (4) and sleeve (42) respectively.
Patent GB-541712-A (GB)
Title: Improvements in ganged electric condensers
Filed: 1941-03-21
Abstract: 541,712. Variable condensers. GENERAL ELECTRIC CO., Ltd., FOOT, J. B. L., and TURNER. W. B. March 21, 1941, No. 3879. [Class 37] Variable condensers, of the type in which an inner electrode is slidden axially through two cylindrical outer electrodes to vary the total capacity between the outer electrodes, are ganged by mounting all the outers on one member in fixed relation, and all the inners on another. In the example, showing a pair of condensers, the electrodes A<1>, C<1> and A<2>, C2, of the pair, are secured to an insulating base 1. The cylindrical parts are in the form of clips embracing a glass tube 2 within which slides an insulating member 3 bearing the inner cylindrical electrodes B<1>, B<2>. The capacity of each condenser is adjusted by longitudinal adjustment of the carrier bar 3 within the tube.
Patent GB-581129-A (GB)
Title: Improvements in or relating to chemical immersion heaters
IPC: A47J36/30
Filed: 1942-03-24
Abstract: 581,129. Heating by chemical action. IMPERIAL CHEMICAL INDUSTRIES, Ltd., and CALDWELL, W. A. March 24, 1942, No. 3889. [Class 64 (ii)] A gas-permeable filter 13 of asbestos or glass wool for use with a chemical immersion heater of the kind described in Specifications 572,573 and 579,046, which may form part of the structure of a food can 1. is spaced away from the priming charge 6 by means of a thin sheet metal spacer 9. A fuse 7 and matchhead 8 are provided. The heating composition 5 may be calcium silicide with red lead or iron oxide, and china clay as a diluent and the priming composition may be calcium silicide and red lead less diluted. Both compositions form a liquid slag. Specification 575,475 also is referred to.
Patent GB-748602-A (GB)
Title: Improvements in or relating to demountable couplings for piping
Inventor: BARTON DONALD MOORE
IPC: F16L19/02
Filed: 1953-02-11
Abstract: 748,602. Nuts; circlips. EDWARDS & CO. (LONDON), Ltd., W. March 19, 1954 [Feb. 11, 1953], No. 3899/53. Classes 89 (1) and 89 (2). [Also in Group XXVIII] A nut 5, Figs. 1-3, for coupling pipes 1, 2, is releasably held to a union 3 on pipe 1 by a split, flat circlip 9 lying in a groove 8 of the nut. A modified circlip 9a, Figs. 1 and 4, has a hookshaped end 13 to facilitate removal by pliers. The ring 9 of Fig. 2 may be removed by tools inserted in radial grooves provided in a modified nut 5a (Fig. 5, not shown).
Patent GB-1417207-A (GB)
Title: Coke oven doors
IPC: C10B25/16
Filed: 1973-01-25
Abstract: 1417207 Coke oven doors KOPPERS CO Inc 25 Jan 1973 [1 Feb 1972] 3945/73 Heading C5E A coke oven door having a door frame 11 that has a knife edge sealing strip 21 peripherally surrounding the door frame for engaging a door jamb and means for holding the sealing strip against the door frame, comprises a plurality of interengaging levers pivotally mounted on external side surfaces of the door frame for engaging and urging the sealing strip into sealing engagement with the door jamb when the door is latched closed. A plurality of first levers 13 and second levers 15 and the sealing knife edge may be arranged such that when the door is in the closed position the first levers exert a force on the second levers, which second levers each exert a uniform force on the sealing knife edge to urge the sealing knife edge against the door jamb of the door opening. The first and second levers may be triangular in shape, with the second levers having rounded apices. The first and second levers are mounted by means of bolts 17, 19 each extending through an oval hole in the respective lever, whereby the lever can move towards and away from the sealing knife edge within limits defined by the size of the oval hole. The first levers 13 and second levers 15 may be arranged with the end portion of each second lever disposed to engage an end portion of an adjacent first lever; with each second lever being movable in a plane vertically disposed toward the door jamb and into engagement with the knife edge sealing strip whereby, when the coke oven door is latched closed, the first levers coact with the second levers which coact with the sealing strip thereby urging it into intimate sealing relation with the door jamb. A pair of stops are mounted externally on the door frame adjacent to each corner thereof in such a way that the stops coact with and keep the knife edge sealing strip in a preselected attitude. Each first lever may be triangular in shape with one apex thereof coacting with the door frame and the other apices each coacting with a second lever and each second lever is triangular in shape with one apex thereof coacting with the sealing strip and the other apices each coacting with a first lever. First traingular levers are mounted with one apex of each lever coacting with the door frame; the second triangular levers are mounted with one apex disposed to engage the sealing strip and with the other two apices disposed to engage apices of adjacent first levers; and stop means are mounted adjacent each corner of the door frame to coact with the sealing strip to keep the strip in a preselected attitude.
Patent GB-1047823-A (GB)
Title: Improvements in or relating to optical masers
IPC: H01S3/101
Filed: 1964-09-29
Abstract: 1,047,823. Lasers. WESTERN ELECTRIC CO. Inc. Jan. 30, 1964 [Feb. 1, 1963], No. 3950/64. Heading H3B. In a laser at least one of the reflecting surfaces of the optical resonant cavity is made so as to be of non-uniform reflectivity so that a unique set of output beam directions is obtained in dependence upon the non-uniformity of the reflectivity. In the embodiment of Fig. 4 particular directional modes of the beams 16 are selected by varying the effective reflectivity of the surface 12 by interposing elements 15 between the surface 12 and the active medium which elements are adapted to produce light transmission patterns of the desired pattern and may employ Kerr cells or Pockels effect cells. The active medium may be a polished ruby rod of rectangular cross-section having reflective coatings applied to its end surfaces. It is shown mathematically that oscillation in any mode or group of modes commences when the reflectivity of the cavity walls becomes sufficiently non-uniform so that at a particular point the cavity abruptly ceases to oscillate in the priorly prevailing mode and oscillates in the selected mode. Figs. 7B to 12B (not shown) indicate far field emission pictures in accordance with particular reflectivity patterns, Figs. 7A to 12A (not shown), on the end surfaces. In a second embodiment the reflectivity pattern remains constant while the pump power applied to the active medium is varied, Fig. 13. Mode selection is accomplished by controlling the intensity of the pump power 22 supplied via lamp 21 to the active medium. As the pump level is increased from zero it first exceeds the critical value for oscillation in the mode of lowest threshold. Further increase of the pump power increases the population of the excited states in other portions of the cavity until the threshold of another mode is reached when the set of output beam directions undergoes an abrupt change between first and second angular positions. The reflecting surfaces may be curved. The arrangement may be used as a switching system in which energization of particular circuits is made to correspond to particular modes and may also be used as an amplifier. Mode selection may also be accomplished by producing a non-uniform spatial distribution of excited particles of the active medium or by introducing non-uniform spatially distributed losses.
Patent GB-639911-A (GB)
Title: Improvements relating to the trimming of motor vehicle roofs
Inventor: ISSIGONIS ALEXANDER ARNOLD
IPC: B60R13/02
Filed: 1948-02-12
Abstract: 639,911. Vehicle roof trim. MORRIS MOTORS, Ltd. Feb. 12, 1948, No. 4107. [Class 20 (iv)] The trim for the roof of a motor vehicle comprises prefabricated panels a, b, c of pliable board materials, and resilient metal strips g are arranged to be compressed longitudinally into arched formation to establish and maintain bending stresses in the panels to force the panels against the roof panels f and to retain them in place. The side panels a, c fit at the front and outerside into the slot d between the cantrail e and the roof panel f, while the centre panel b fits into this groove at the front and is overlapped at the side edges by the side panels. Two spring steel battens g are riveted to the upper face of panel b near and parallel to the side edges, and at the rear ends are fitted with short rods h which are rounded at the end and fit into recesses in the heads of bolts i which screw into tubes j and serve as turnbuckles. The battens are not riveted to the panel b at the rear so that the panel may be adjusted to arch the battens. The rear part of the panel is then pressed into place and its edge clamped by the rear window moulding m. In another embodiment the battens are not attached to the trim panel but are placed below it for the greater part of their length and at the rear pass through slots in the panel to the turnbuckles. The panels a, b, c and the battens, if exposed, are covered with decorative material, and the panels may butt.
Patent GB-967615-A (GB)
Title: Artificial candle
IPC: F23D3/16
Filed: 1963-01-31
Abstract: 967,615. Artificial candles. K. G. RUTESIC. June 26, 1963 [Jan. 31, 1963], No. 4110/63. Heading F4T. An artificial candle comprises an elongated enamelled copper cylinder 10 containing paraffin 15 and a copper or brass wick tube 13 disposed within the cylinder 10 and brazed to an upper portion 12 which screws into the top of the cylinder, the upper end of the wick tube projecting beyond the upper portion 12 and having four apertures 17 therein. The wick tube is slotted longitudinally. The cylinder 10 has a cylindrical base 20 which fits into a standard candlestick, and a flange 21 which abuts the candlestick. A closure cap may be screwed on to the upper end of the wick tube 13. A polythene washer 22 is disposed between the upper portion 12 and the top of the cylinder 10. The wick is made from fibreglass.
Patent GB-286686-A (GB)
Title: Device for securing a member on a cylindrical shaft
IPC: F16D1/08
Filed: 1928-02-09
Abstract: 286,686. Anger, J. R. March 9, 1927, [Convention date]. Clutches, ratchet; securing sleeves on shafts. -Slightly bent plate springs 4 are inserted in recesses 3 in a sleeve 2 so that their outer ends bear into angles of the recesses, their inner ends bear upon the shaft surface or engage shallow saw-cuts or recesses 6 therein and adjacent to such inner ends they bear against the edges 5 of the recesses. The inclination of the spring to the shaft surface at the points of contact is approximately 45. This device effects a oneway drive. Two such devices acting in opposite directions, as shown, may be used to inhibit free rotation in both directions, and the oppositelyacting springs may be arranged abutting together at their outer ends in a single recess or may be replaced by a U-shaped spring serving the same purpose. The recesses may be so shaped that they limit the buckling of the springs under stress. To facilitate insertion of the springs into the recesses, pincers, Fig. 3, with a recess in one jaw are employed to grip and bend the springs.