baber/WOPTO huggingface dataset:
Patent GB-174538-A (GB)
Title: Improvements in air admittance valves for internal combustion engines
IPC: F02D9/00
Filed: 1921-03-03
Abstract: 174,538. West, D. March 3, 1921. Check lift valves.-An extra air inlet device for internal-combustion engines comprises a casing 1 opening into the induction pipe at 2 and provided with a suctionactuated valve 5, the stem 6 of which projects from the casing and is surrounded by a closing- spring 8 situated between a fixed washer 7 and a cross-head 9, which is adjusted by a Bowden wire or other device 13, 15, within reach of the driver to vary the tension of the spring. The cross-head 9 is guided on rods 10 extending from the valve seat 4, and is operated by a cotter 11 which passes through slots 12 in the valve stem 6 and bears upon the face of the cross-head.
Patent GB-650478-A (GB)
Title: Improvements in or relating to electric arc welding
IPC: B23K9/20
Filed: 1948-03-08
Abstract: 650,478. Electric welding. PHILIPS ELECTRICAL, Ltd. March 8, 1948, No. 7066. Convention date, March 11, 1947. [Class 83 (iv)] [Also in Group II] In welding a stud &c, 1 to a plate &c. 4 a slag forming body 2 of low electrical conductivity supported by the plate carries a shoulder 3 on which the stud 1 is positioned and a recess 5 in which the arc is produced. Fusion of the wall 6 allows the stud to be moved towards the plate under spring pressure &c. The slag forming body may comprise by weight, calcium carbonate 15 per cent, calcium fluoride 13 per cent, bentonite 12 per cent, ferromanganese 2 per cent, ferrosilicon 3 per cent, ferrotitanium 2 per cent and powdered iron 53 per cent. The body may, before use, be heated in vacuo for 1 hour at 800‹ C. to expel gas.
Patent GB-1004245-A (GB)
Title: Improvements in or relating to processes for the removal of semiconductor material deposited on a support in epitaxy processes
IPC: H01L21/00
Filed: 1963-02-22
Abstract: Semi-conductor material deposited on a support is removed by heating in an atmosphere consisting of or containing a halogen or halogen compound which decomposes to give a halogen. At least the surface of the support is made of a material other than the deposited semi-conductor material and less susceptible to reaction with halogen or hydrogen halide than the deposited semi-conductor.  The semi-conductor deposit has formed during the deposition of layers of semi-conductor on semi-conductor members (e.g. discs) disposed on the heated support by thermal decomposition of a gaseous compound of the semi-conductor.  The support may be made of another semi-conductor material, e.g. Si, SiC, or graphite.  The semi-conductor deposit may be Ge, Si, AIIIBv or AIIBVI compounds.  The halogen compounds may be hydrogen halides, e.g. HCl possibly with H2, or halides or hydrohalides of the semi-conductor deposit, e.g. SiCl4, SiHCl3, possibly mixed with a rare gas.  Halogens specified are Cl2 and I2.
Patent GB-367581-A (GB)
Title: Improvement relating to pit props
IPC: E21D15/60
Filed: 1931-03-09
Abstract: 367,581. Mine props. BEDFORD, J. W., Burnaby, Westcommon Lane, Old Brumby, Scunthorpe, Lincolnshire. March 9, 1931, No. 7223. [Class 20 (ii).] A pit prop is formed with a head or foot connected to it by means of a knucklejbint, so that the prop can be easily removed by lateral pressure, the parts being locked in extended position by a sliding latch. The main prop 7 of section-metal is provided with a bearing-plate 10 curved to an arc with centre 13, the pivot on which the head portion 8 is supported, the bearing face 12 of the head portion being also curved. The other ends of the head portion and main prop are also curved. The pivot 13 is supported in side cheeks 11 fixed to the upper part of the main prop and the parts are locked in extended position by a sliding latch 14 which can be released by a pivoted lever 23 to which the hauling device is fixed. A removable stop 19 prevents movement of the latch in the engaged position. The head portion may be formed of section-metal and a two-part barrel 32 may be welded to it to form the bearing for the hinge pin 13, Fig. 4.
Patent GB-597410-A (GB)
Title: Improvements in or relating to variable inductances and to electrical apparatus embodying the same
IPC: H01F29/14
Filed: 1945-03-22
Abstract: 597,410. Electric control systems. ELLIOTT BROS. (LONDON), Ltd., and HAWKES, H. D. March 22, 1945, No. 7278. [Class 40 (i)] [Also in Groups XXXV and XXXVI] Apparatus in which A.C. is phase displaced in a direction determined by the polarity of an out-of-balance D.C. comprises four similar chokes connected in a bridge with the input and output A.C. terminals connected across the opposite diagonals, each choke having first D.C. windings connected to a single source of supply and at least two chokes having second D.C. windings through which flows the same current from the out-of-balance D.C. source to unbalance the bridge. Each of four similar such chokes a, b, c, d have cores with a centre limb bearing an A.C. winding such as a<1> and two outer limbs each bearing halves of the two D.C. windings a<2>, a<3>. The four coils a<1>, b<1>, c<1>, d<1> are connected to form a bridge, supplied across one diagonal with A.C. from terminals e, e. D.C. from supply f passes through coils a2, b<2>, c<2>, d<2> and magnetically biasses the cores to reduce the inductance values of the chokes, which, however, remain equal so that the bridge is balanced. The second D.C. windings a3, b<3>, c<3>, d<3> are all connected in series andso wound that a current in one direction produces flux in cores of chokes a, d assisting the flux of windings a<2>, d<2>, thereby reducing the inductance values and in the cores of b, c opposing the flux of windings b<2>, c<2>, thereby increasing the inductance values thus unbalancing the bridge. This unbalance results in the appearance across the bridge diagonal opposite to that across which the A.C. input is connected, of a voltage phase displaced at about 90 degrees from the input. Reversal of the D.C. in a<3>, b<3>, c<3>, d<3> reverses the direction of the unbalance voltage. In the application of the bridge to the measurement of the P.D. of a thermocouple p, shown in Fig. 2, this P.D. is balanced against that between points'h, h of a potentiometer l, which has a rotating arm n sliding along a wire o. Any difference between these P.D.'s results in D.C. passing through windings a<3>, b<3>, c<3>, d<3> of the bridge A and the P.D. resulting from its unbalance is applied through an amplifier B to one winding i of an A.C. motor j, the other winding k of which is connected to the supply terminals e, e. The motor rotates in one direction or the other according as to the direction to which the bridge is unbalanced and is so connected to the slider arm n as always to bring it back to the point at which the P.D.'s of potentiometer and thermocouple are equal. In a modification, Fig. 3 (not shown), windings c<3>, d<3> are omitted. Windings a<2>, b<2> are adjusted to balance out the double frequency effect in the D.C. windings a<3>, b<3> and windings c<2>, d<2> are then adjusted to ensure inductive balance of the bridge.
Patent GB-956664-A (GB)
Title: Apparatus for aligning cards in a stack
IPC: G06K13/14
Filed: 1963-02-25
Abstract: 956,664. Feeding sheets. SIEMENS & HALSKE A.G. Feb. 25, 1963 [Feb. 28, 1962], No. 7402/63. Heading B6B. Apparatus for aligning cards in a stack comprises a roller rotating about an eccentric axis extending in a direction normal to the planes in which the cards lie when stacked, which engages one edge of each card entering the stacking compartment and moves the card to bring its opposite and/or an adjacent edge into contact with a card-aligning surface or surfaces extending in a plane or planes perpendicular to the planes of the stacked cards. The cards 2 are fed downwardly one at a time to a compartment 8 having walls 4 along two adjacent sides and aligned with the stack of sheets already positioned in the compartment by rotating rollers 3 located at the other two adjacent sides. The rollers are circular in crosssection and rotated about eccentric axes. The upper ends 3a of the rollers are cone-shaped to guide the cards into the compartment. The roller bearings 9 are of resilient construction.
Patent GB-249536-A (GB)
IPC: F28F9/00
Filed: 1925-03-19
Abstract: 249,536. Chavanne, L. March 19, 1924, [Convention date]. Air and gases heating furnaces.-In continuous heat-exchange, apparatus for fluids such as air, gas &c. in which a thin separating partition for the two fluids is employed and one or both of the fluids is sandwiched between the partition and refractory material, e.g. as described in Specification 231,186, a plurality of flues connecting two end chambers for one fluid is enclosed in an intermediate chamber provided for the other fluid having narrow elongated inlet and outlet ports in orderto equalize the distribution of the heat. The width of the ports may be adjustable at different points along the length. The heat exchanger 35 has a vertical slot-like port 15 giving good distribution parallel to the axis and a horizontal port 17 serving a large part of the periphery. Figs. 7 and 8 show a gas-filled heater having a long narrow vertical slot 15<a> supplied with air and gas from ports 36, 37, the supply being. regulated by a series of sliding dampers 38, 39.- These dampers may comprise refractory bricksmounted for movement by means of rollers 42, 43 running in channels 44, 45. For heating with waste gases one of the ports 36, 37 is dispensed with. The slot 15a may be horizontal, the dampers being then maintained in position by counterweights. The apparatus may embody any of the features included in Specifications 249,534 and 249,535.
Patent GB-401700-A (GB)
Title: Improvements in or relating to rear projection screens
IPC: G03B21/62
Filed: 1932-03-14
Abstract: A rear projection screen comprises a sheet-like body of cellulose-acetate material having incorporated therein an agent such as triphenyl phosphate to impart flexibility and having light-diffusing means associated with or formed thereon.  In one form, the screen is formed by casting a composition comprising cellulose-acetate dissolved in a mixture of acetone and ethyl lactate, together with triphenyl phosphate and light-diffusing and light-filtering agents consisting respectively of zinc oxide and cobalt blue.  Castor oil may be employed in place of triphenyl phosphate.  Other suitable light-diffusing agents are antimony oxide, barium sulphate, titanium oxide; and other suitable light-filtering agents are dyes such as victoria blue, erioglaucine blue and oil soluble alizarin blue.  Reference has been directed by the Comptroller to Specifications 139,815 and 141,669, [both in Class 97 (i), Optical systems &c.].
Patent GB-1031800-A (GB)
Title: Gearing for representing planetary and satellite movements
IPC: G09B27/02
Filed: 1963-02-25
Abstract: 1,031,800. Toothed gearing. CARL-ZEISS-STIFTUNG, [trading as CARL-ZEISS]. Feb. 25, 1963 [Feb. 26, 1962], No. 7527/63. Heading F2Q. [Also in Division G5] Rolling gear for representing the movement of planets or satellites in a projection planetarium consists of two intermeshing gear-wheels with fixed axial spacing and in which the radius r 1  of the driving wheel and r 2  of the driven wheel, with reference to their axes of rotation, are defined by the equations:- in which # is the numerical eccentricity of the elliptical orbit of the planet or satellite, # = #1-#<SP>2</SP>/#<SP>2</SP>, and E is the eccentric anomally of the planet or satellite in the orbit to be represented and a is the fixed axial spacing of the wheels. Each gear-wheel consists of an eccentrically mounted plate 5 carrying screws 7, 7<SP>1</SP>, 11 and 11<SP>1</SP> adjustable in threaded bores 6, 6<SP>1</SP>, 12 and 12<SP>1</SP>, respectively. The screws are supported by brackets 8, 8<SP>1</SP>, 13, 13<SP>1</SP> which are connected to a gear-ring 9 by pins. By adjusting the screws 7, 7<SP>1</SP>, 11 and 11<SP>1</SP> the major and minor axes of the ring can be varied. Alternatively, the adjusting screws 11, 11<SP>1</SP> are set at an angle to the minor axis, Fig. 4 (not shown).
Patent GB-906839-A (GB)
Title: Wrench means
Inventor: BERGERE EMRIC WILLIAM
IPC: B25B15/00
Filed: 1960-03-03
Abstract: 906,839. Wrenches. KAYNAR MFG. CO. Inc. May 1, 1961 [March 3, 1960; Nov. 15, 1960], Nos 7624/60 and 39166/60. Class 61. A wrench for applying torque to a nut &c. which has flat wrenching surfaces arranged in a polygon comprises an annular wall having a number of circumferentially spaced longitudinal splines of rounded cross-section protruding therefrom, the material of the annular wall being of a hardness of at least 50 Rockwell " C." The splines 14 protrude radially inwards from the annular internal wall of the socket portion 12. In a modification the splines protrude radially outwards from the external annular wall of a tool adapted to fit into a socketed head nut. The splines 14 are each in the form of an arc of a circle separated from one another by relatively flat areas 18 in the form of arcs of a circle having its centre at the centre of the wrench. The splines are arranged to engage the flat wrenching surfaces of a polygonal nut at locations other than at the corners of the polygon, whereby said wrenching surfaces are, in use, slightly deformed and hardened at said locations.
Patent GB-179024-A (GB)
Title: Improvements in or relating to drum brakes
IPC: F16D65/14
Filed: 1921-03-10
Abstract: 179,024. Mitchell, L. J. March 10, 1921. Blocks acting on drums; compensating for wear.-The shoes b of a drum brake are adjusted to compensate for wear by the winged head d<1> of a stud d lying between the ends of the shoes and screwing into a boss e<1> on the fixed plate c. The stud can be turned to effect the adjustment by a key engaging the squared end d<2>, and is locked by a nut f with or without the aid of a washer interposed between the nut and the boss e<1>. The blocks are actuated to engage the drum by the cam c.
Patent GB-896025-A (GB)
Title: Improvements in or relating to valve-operating buttons for use on aerosol containers
IPC: B65D83/16
Filed: 1961-03-02
Abstract: 896,025. Dispensing liquids by gaseous pressure. PRECISION VALVE CORPORATION. March 2, 1961 [March 18, 1960], No. 7657/61. Class 102(2). [Also in Group XVIII] An aerosol valve comprises a rigid button 10 with a measuring chamber 11 having a valve seat 12 and a diaphragm 15 which tightly embraces the button at 17 and has a hub 18 slidable in a recess 13 in the button. In the normal position, flexing of the diaphragm holds the seat 12 above the hub but, when the button is depressed, the seat engages the hub to isolate the measuring chamber 11 from a nozzle 14 and then the valve stem 6 moves down until a lateral part 7 moves below a flexible seal 4 and allows the chamber to fill. On release of pressure on the botton, a spring 8 raises the valve stem and the flexing of the diaphragm raises the seat 12 above the hub so that the contents of the measuring chamber discharge through the nozzle.
Patent GB-565609-A (GB)
Title: Improvements in or relating to thermionic valve circuits
IPC: H03H7/01
Filed: 1943-05-14
Abstract: 565,609. Non-contact-making relays. STANDARD TELEPHONES & CABLES, Ltd., CHATTERJEA, P. K., and SCULLY, C. T. May 14, 1943, No. 7710. [Class 40 (iv)] [Also in Group XL] An intervalve coupling network adapted to transmit direct current comprises a linear and a non-linear resistance having a continuous resistance characteristic so arranged that the proportion of the anode voltage variation transferred is greater than the proportion of mean anode voltage transferred. Fig. 1 shows an intervalve coupling consisting of resistance R1, R2 and a non-linear resistance R comprising a negative temperature coefficient thermistor a voltage dependant resistance of the carborundum type. The operating point is preferably arranged to lie on a flat portion of the combined characteristic, Fig. 2 (not shown), and may be so chosen as to have a negative slope causing a voltage amplification. An indirectly heated thermistor may be used and the heating current varied to obtain the desired characteristic. If the mean anode voltage cannot be stepped down sufficiently in one stage, two stages may be used as shown in Fig. 3.
Patent GB-419578-A (GB)
Title: An improved package and a machine for and method of producing same
IPC: B65B9/213
Filed: 1934-03-12
Abstract: 419,578. Bundling and cutting machines. SHEPHARD, S., Manor House, East Bridgford, near Bingham, Nottinghamshire. March 12, 1934, No. 7771. [Class 94 (i).] Wool and like yarns are assembled and made up into packages as shown in Fig. 16, in which cut yarn portions of equal lengths are parallely disposed in a closely packed bunch encircled by an open-ended tubular sheath 19, the overlapping edges of which are secured by an adhesive band 31. The several yarns 1 are led between vertical guide rollers 3, Fig. 3, horizontal rollers 4 to collect them together, and pass to a tubular guide 14 with a flared mouth. Paper is drawn from a roll 19 and passes through a curved slot 21 in a plate 15, which commences the formation of the web into a tube. A second slot in a plate 22, Fig. 1, continues the process, and the paper and wool next pass through a boss 26 in a plate 25. The paper is now completely formed into a tube and surrounds the wool, being fed forward in a doublewalled tube 27, Fig. 11. A strip 31 of adhesive paper is fed from a roll 30, Fig. 13, and passes over a moistening roll 34 and through a slot 32 in the guide 33 through which the tube and yarns are being traversed. The tube is moved forwards intermittently by jaws 35, 35<a> on arms 55 on a frame mounted for longitudinal reciprocation on rods 51. At the forward end of the stroke, which is transmitted by a slide bar 43, rollers 57 on the lower ends of the arms 55 engage cam surfaces on rods 58, and rock the arms about their pivots 54 to open the jaws. Pins 65 on the arms enter notches 64 on a resiliently mounted cross-bar 62, and the jaws are held open during their return stroke until released by a catch, when they close upon the tube for the next stop. The tube is severed while at rest by a cutting device comprising a rotating disc 38, Fig. 14, driven from a motor 67 and mounted on a carriage 68. The carriage is moved to the right by the engagement of an interrupted gear wheel 77 with a rack 76 on the carriage. The shaft 83 carrying the gear rotates continuously, and, when the rack 76 is not engaged, the carriage is returned to the left by a spring 71. Specification 410,902 is referred to.
Patent GB-1236675-A (GB)
Title: Tablet dispensing device
IPC: B65D83/04
Filed: 1969-02-13
Abstract: 1,236,675. Tablet dispenser; packages. ORTHO PHARMACEUTICAL CORP. 13 Feb., 1969 [8 March, 1968], No. 7782/69. Headings B8C and B8P. A tablet dispenser 100 comprises a base 102a, 102b containing a plurality of columns of tablet locations, the number of columns being equal to the number of medicament doses to be taken in a given cycle of time and an indicia 106 of time representing a point of time within the cycle of time at which medication is to be taken being associated with each of the columns of tablet locations, the series of indicia so formed being arranged sequentially with respect to time and located on a movable member. The movable member is a flexible strip 108 of, for example, paperboard slidably mounted in the base 102a adjacent the top of the columns of tablet locations, indicia representing each dosage time in the cycle of time being printed sequentially with respect to time on a visible surface of the strip 108 at equidistantly spaced locations, the number of such indicia being greater than or equal to one less than the number of columns of tablet locations. In the construction shown the tablets are contained in a press-out laminate 111, the tablet locations comprising apertures 104 through which tablets pass after being pressed out of the laminate 111.
Patent GB-1085741-A (GB)
Title: Safety closure for containers
IPC: B65D50/06
Filed: 1966-02-22
Abstract: 1,085,741. Caps for bottles &c. W. J. H. LAW. Feb. 22, 1966 [March 2, 1965], No. 7793/66. Heading B8T. To prevent rapid opening of a glass bottle &c. 22 its closure cap 10 is provided with threads 16 of one hand inside the conventional cap skirt 15 for engagement with external threads 25 around the bottle &c. neck, and is also provided with external threads 20 of the opposite hand around the end of a spigot 18 formed in the cap to project into the bottle, the spigot threads 20 being engageable with threads 27 inside the bottle neck. The cap is taken off the bottle by first unscrewing it in one direction, until the skirt threads 16, 25 have separated, and continuing by unscrewing in the opposite direction, so that the spigot threads 20 pass out through the threads 27 inside the bottle &c. neck. The cap 10 may be made from plastics, metal &c.
Patent GB-258795-A (GB)
Title: Improvements in or relating to anti-corrosive preparations
IPC: C09D191/00
Filed: 1925-03-24
Abstract: 258,795. Fowler, S., and Edser, E. March 24, 1925. Lubricants for machinery.-An anticorrosive coating preparation for metallic surfaces, which also acts as a lubricant, comprises neutral soapfree wool-fat (adeps lanµ) and a non-volatile thinning agent, such as a lubricating oil or a mineral grease such as petroleum jelly. Fure wool-fat, prepared as described in Specification 253,955, is especially suitable. Specification 163,474 also is referred to.
Patent GB-609414-A (GB)
Title: Improvements in control circuits for x-ray apparatus
IPC: H05G1/58
Filed: 1946-03-13
Abstract: 609,414. Control systems for X-ray apparatus. PHILIPS LAMPS, Ltd. March 13, 1946, No. 7868. Convention date, March 15, 1945. [Class 38 (iv)] [Also in Group XXXVII] In X-ray apparatus having separate controls for adjusting the tube loading for screening and photographing, respectively, a further control is provided whereby, during screening, the tube loading may be increased for a limited period which is preferably dependent on the initial screening current. As shown in Fig. 1, the filament heating transformer 1 for a tube 2 includes in its primary circuit a tapped resistor 3, a portion of which may temporarily be short-circuited by a mercury switch 4 to increase the tube loading. Switch 4 (see Group XXXVII) is tilted from its normal position, in which its contacts are open, by electromagnetic actuating mechanism 14, 15 upon closure of a button 16. Release of the button returns the switch to its initial position, the mercury flowing back over a different path and closing the switch contacts whilst doing so. In the arrangement shown in Fig..3, the switch 4 is controlled by a valve 17 and condenser 20, the valve being normally biassed back by a battery 23 so that the switch-operating coil 18 in the anode circuit of the valve is de-energized. Closure of button 19 shorts the biassing circuit so that the valve conducts and the switch coil is energized. Auxiliary contacts 21 break the short-circuit and the bias voltage again builds upon on the grid of the valve at a rate determined by the values of a resistor 22 and capacitor 20. A portion of resistor 22 is constituted by a rheostat which is ganged with another rheostat 25 controlling the normal screening current, so that the period of closure of switch 4 is determined by the normal screening current. Switch 30 provides an independent control of normal screening current. Ganged change-over switches 26-29 are thrown to alter the tube supply circuits for radiography, the loading then being controlled by switches 31, 32.
Patent GB-1269740-A (GB)
Title: Anti-static polyester compositions
IPC: C08K5/42
Filed: 1970-02-19
Abstract: 1,269,740. Dyeing polyesters. FARBWERKE HOECHST A.G. 19 Feb., 1970 [19 Feb., 1969], No. 8013/70. Heading D1B. [Also in Division C3] Polyester fibres containing 1-15% of at least one alkali metal paraffin sulphonate of 8-30 carbon atoms are dyed with various cationic and disperse dyestuffs by immersion in a bath containing water, the dyestuff an acid (acetic or sulphuric), 2-methyl naphthalene and optionally a dispersing agent based on alkyl benzene sulphonate.