baber/WOPTO huggingface dataset:
Patent GB-1427400-A (GB)
Title: Compressed gas breathing apparatus
IPC: A62B7/02
Filed: 1973-07-26
Abstract: 1427400 Fluid-pressure servomotor systems MINE SAFETY APPLIANCES CO 26 July 1973 [25 Oct 1972] 35690/73 Heading G3P [Also in Divisions A5 and F2]  Breathing apparatus Fig. I, (not shown) wherein gas is normally provided to a facepiece (2) from a compressed gas source (1) via a conduit (4), pressure reducing valve (3), conduit (6), control valve 7, conduit (8), and demand valve (9), is arranged such that an emergency loss of pressure at the gas source 1 communicates via conduit (12) to close valve 7 and the user inhales through an alarm valve 30 which provides a pulse of gas when the gas pressure falls below the predetermined value to signal the user that the control valve has closed. The control valve, Fig. 2, includes a port 17 and seat 18 between the inlet and outlet 26 of the valve, a closure member 22 and closure spring 23, the supply pressure (1) actuating a piston 13 connected with said closure member 22 the spring force being adjustable to alter the critical pressure valve of the supply gas. A stem 15 fixed to the piston 13 and closure member 22 extends through the port 17 and is enclosed by spring 23 which is compressed between the closure member and a collar 24 threaded on to the stem. The alarm valve 30, Fig. 3, includes a valve seat and a valve outlet 36, a diaphragm 37 therebetween and held against the seat by the predetermined gas pressure, a check valve 51 and a seat 53 normally engaging with a flexible valve disc 54 and stem 55 plugged into the check-valve bore 52. Compressed between the front flange 43 of sleeve 42 and the rear wall of the chamber is a coil spring 56 urging sleeve and metal disc 39 to close the valve. When gas pressure falls below the critical value, control valve 7 closes, and inhalation reduces, the pressure in conduits (8) and (32) causing support diaphragm 37 and disc 39 to move rearwardly against the coil spring 56, moving check-valve seat 53, allowing the gas pressure behind diaphragm 45 to drop and admit gas from inlet 35 to the outlet 36.
Patent GB-356980-A (GB)
Abstract: 356,980. Electric signalling systems. ERICSSON TELEPHONES, Ltd., 67, Kingsway, London, and LIMB, F., Holmwood, Fellows Road, Beeston, Nottinghamshire. Oct. 23, 1930, No. 31799. [Class 40 (i).] In an electric totalizator discrimination between different classes or groups of bets is effected over the same line by varying the direction of current in the line. The variation may be effected by opposing one battery by a more powerful one, by the use of a reversing key, or by suppressing one or other of the half-cycles of an alternating current. Using batteries in opposition. Discrimination between win and place bets, for example, is brought about by use of the key WP in the usual manner. If a win bet is to be set up the horse key BKI is depressed and the key WP lowered to complete a circuit from earth and resistance r5, through the upper winding of a relay HR, the mechanical contacts m and the line 1 to the upper winding of the particular horse relay IW, a rectifier R1, the total relay TW and the battery b. The relays IW, TW alone operate at this time to effect the registration whereupon the revertive signal in the form of increased current in the line causes operation of relay HR and the consequent drive of the ticket machine. If the bet is for a place the key WP is raised and this throws in a more powerful battery B to send an impulse through the line in the reverse direction. This impulse cannot pass through the rectifier R1 but proceeds through a similar registering circuit including a reverse rectifier R2 to register the bet on the place counters. The win and place registering devices may be arranged in series instead of in parallel as shown, with polarized relays or with non-polarized relays shunted by rectifiers. Using opposite half-cycles of alternating current Fig. 2 shows diagrammatically such an arrangement, the key WP being adapted to connect the source G with either of two reversely arranged rectifiers R3, R4 and thence with the ticket and registering apparatus. Using a reversing-key. The source G, Fig. 3, of alternating current is converted into uni-direction current along two lines by means of the rectifiers R3 .. R6 and connection of the registering circuits with either of these lines is controlled by the key WP provided with the various contacts shown.
Patent GB-345654-A (GB)
Title: Improvements in the distillation of coal tar
IPC: C10C1/04
Filed: 1929-11-21
Abstract: <PICT:0345654/III/1> Tar is distilled to pitch by heating it in a coiled pipe still 6, flashing it into vapour in a vapour box 9 and simultaneously contacting the vapours, the pitch, and the residual tar with an inert gas introduced through a pipe 10.  The vapours pass off through a pipe 12 through a heat exchanger 14 where they are cooled by indirect contact with the tar supplied from a tank 19 through pipes 15, 16, and are condensed in a condenser 21 and collected in receivers 26.  The gases produced are separated in a separator 24 and may be used as the inert gases for the reaction by recirculating them through a compresser 28 to the pipe 10.  In a modification the inert gases are heated before being passed into the vapour box by heat exchange with the gases of combustion.  The pitch is withdrawn through the pipe 13.  Specification 158,852, [Class 32, Distilling &c.], is referred to.  Reference has been directed by the Comptroller to Specification 231,686, [Class 32, Distilling &c.].
Patent GB-1224264-A (GB)
Title: Radial ply pneumatic tire with high angle breaker assembly
IPC: B60C9/18
Filed: 1969-07-17
Abstract: 1,224,264. Radial ply tyres. GENERAL TIRE & RUBBER CO. 17 July, 1969 [24 July, 1968], No. 36108/69. Heading B7C. A radial ply tyre comprises a plurality of (e.g. 2, 4 or 6) endless breakers 20, 30, constructed of parallel cords 22, 32, respectively, disposed at an angle of between 25 degrees and 65 degrees to the mid-circumferential plane A of the tyre, embedded, together with uniformly dispersed oriented fibres, in an elastomeric compound. The cords and the fibres, which may be oriented parallel to the cords, are of nylon, rayon, polyester, cotton, glass, or metal. Different materials may be employed in successive breakers to give them different values of Young's modulus. Each breaker may have a mixture of fibres of different materials. The fibres may be oriented parallel to the cords by calendering a fibre-containing compound upon continuous cords. In order to make a breaker having fibres oriented at an angle to the cords, a fibre-containing compound is calendered separate from the cords to orient the fibres, and the cords are then coated with the compound, suitably oriented.
Patent GB-1489497-A (GB)
Title: Fuel supply system
IPC: G01F23/36
Filed: 1975-09-02
Abstract: 1489497 Reserve fuel supply for vehicles HONDA GIKEN KOGYO KK 2 Sept 1975 [3 Sept 1974] 36110/75 Heading B7H A fuel tank 2, particularly for a motorcycle is provided with an electrically operated fuel gauge 3 and an outlet cock 1 having on, off and reserve positions. When in the on position the cock is connected to a tube 4 which terminates above the tank bottom and the float 9 and electrical unit 10 are arranged to give an empty signal at the gauge when the fuel reaches the level of this tube. The reserve position is achieved manually or automatically and the cock is then connected to a further pipe which extends to the bottom of the tank. A warning light 11 is illuminated when the cock is changed to reserve. A filter 7 and fuel pump 8 are provided in the system.
Patent GB-959665-A (GB)
Title: Thermometer manufacture
Inventor: FREYNE EUDMON CANICE DE
IPC: C03B23/09
Filed: 1959-10-26
Abstract: <PICT:0959665/C1/1> <PICT:0959665/C1/2> <PICT:0959665/C1/3> <PICT:0959665/C1/4> Apparatus for forming a chamber on a thermometer stem comprises means for clamping the stem in a vertical position, means for heating around the lower end of the stem, means for forcing gas down the bore of the stem to form a chamber and gripping means mounted for vertical reciprocation below and in line with the stem for engaging the bottom end of the heated stem after formation of the chamber to draw out the chamber as the gripping means are lowered. The stem 59 is clamped on a hollow shaft 6 pivoting by means of a handle 13 through about 90 degrees so that the stem 59 lies either over a multi-jet gas burner 17 or gripping means 56. Rigidly fixed to shaft 6 is a stay 10 joined thereto by a yoke 11 and yoke 12 with a projection 14 from which a stud 16 projects to engage either one of two adjustable stops 15 secured on the main frame 1. The stem 59 is held in a clamp, Fig. 3, having a ceramic-lined fixed V-shaped jaw 35 and a movable jaw 36 mounted on an arm pivoted at 37 and actuated by a toggle link 38, lever 39 and spring 40.  The clamp is mounted on a slide 5, vertically adjustable on shaft 6 and locked by a screw 8, the slide having a fork 9 to engage the stay 10 to prevent rotation about the shaft 6. An upper slide 5 carries a mounting for an air connection including a hard rubber ring against which the stem 59 is pressed, air being supplied through pipes 46 and 51a under the control of a valve 53 actuated by a button 54 from a compressed air supply. The multijet burner 17, Fig. 2a, has tubular arms 18 passing into a mixing chamber 20 to which gas and air is supplied from a pipe 30 through a tube 19 and an eccentric pipe 23 which is rotatably held in a gas-tight joint 24 on the tube 19, the chamber 20 being rotated by handle 26 to centre the stem 59 and burners 17. The tube 19 is slidably mounted in bushes 25 in plates 1 and 25a and is held in its lower-most position by a spring 29, the movement being limited by adjustable stops 27.  The tube 19 is moved upwardly so that the burners 17 surround the lower end of the stem 59 by a lever 32 having a double fork end to engage ball races 34 on the tube 19.  After heating of the stem 59, air is passed into the bore of the stem to expand the glass to the shape shown in Fig. 7, the burners 17 being lowered and the shaft 6 provided so that the stem 59 is in line with the tongs 56 which engage the thick end of the stem by sliding rod 57 upwardly against the pressure of spring 58 which then pulls the stem downwardly to draw out the chamber. Later, the chamber is cut off to leave an open, wider bore which is joined to the bulb of the thermometer.
Patent GB-368334-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K27/02
Filed: 1930-12-01
Abstract: 368,334. Alternating current commutator machines. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Alexanderson, E. F. W.; 8, Adams Road, Schenectady, New York, U.S.A.) Dec. 1, 1930, No. 36186. Convention date, Nov. 30, 1929. [Class 35.] Brushes, commutators.-In order to reduce sparking by short-circuiting one coil of a lap-winding while the adjacent coil is undergoing commutation without causing overheating when the motor is at rest by short-circuiting more than one coil at a time the brushes are made of such width that they cannot make contact with more than two commutator-bars at once and are unevenly spaced. In the arrangement shown the brushes 17 are shortcircuiting the coils 23, 24 while the coils 20, 26 are undergoing commutation by the brushes 16, and it will be seen that these coils lie in adjacent slots. The spaces between the brushes are of the width of 18¢ and 19¢ commutator bars alternately as shown. It is stated that if the armature voltage per coil while the motor is at rest does not exceed four volts overheating at the brushes will not take place.
Patent GB-1106480-A (GB)
Title: Process for the production of a semi-conductor arrangement
IPC: H01L21/00
Filed: 1965-08-25
Abstract: 1,106,480. Semi-conductor device. ROBERT BOSCH G.m.b.H. 25 Aug., 1965 [25 Aug., 1964], No. 36434/65. Heading H1K. A semi-conductor arrangement is produced from a mono-crystalline semi-conductor body having a surface layer of a metal semi-conductor eutectic by activating the eutectic layer with an aqueous solution containing nickel and fluoride ions and reducing the nickel salt to form an electrode using sodium hypophosphite. A Si disc 1 having a PN junction therein formed by diffusion of B and P, is etched with HF saturated with K 2 G 2 O 7  and then with a mixture of NaOH and KOH with or without sodium citrate or tartrate or EDTA. After washing and drying, the disc is metallized in vacuo with Ag or Au and annealed at 900‹ C. in H 2  to give eutectic layers 2. The body is then treated with an aqueous solution of NiCl 2  or NiSO 4  and NH 4 F and subsequently with sodium hypophosphite to give Ni layers 3.
Patent GB-842231-A (GB)
Title: Improvements in or relating to refrigerating apparatus for foodstuffs
Inventor: CUDDON WILLIAM GEORGE GORTON
IPC: A23B4/07
Filed: 1957-11-23
Abstract: 842,231. Cooling fish etc.; refrigerating. CUDDON, W. G. G. Aug. 13, 1958 [Nov. 23, 1957], No. 36575/57. Class 29 In a plate-type fish &c. freezer having a plurality of banks of plates each bank being cooled by a set of evaporators G, a selected set of evaporators G can be defrosted to free the frozen fish by the means described below while the rest of the sets are still refrigerating. The evaporators G are connected by suction pipes H to a common header/heat exchanger C heated by liquid refrigerant flowing through pipe B from the condenser/receivers A to the branch pipes D feeding the expansion valves F and evaporators G. Header C is connected to compressors L by pipes K and common pipes M join the compressors to the units A. Each pipe H includes a modulating valve J which is wide open during refrigeration. To defrost one set of evaporators G, valve E in the appropriate branch D is closed and the compressors exhaust residual liquid refrigerant from the evaporators. Then valves P are opened and hot gas flows through pipe N from the compressors into the evaporators to defrost them and, through a pipe Q to a space beneath piston J<SP>1</SP> in valve J to move the valve to constricting position thus raising the evaporator pressure. During defrosting, refrigerant condenses in the evaporators and then passes through valve J into header C where it is evaporated by the hot liquid refrigerant in pipe B flowing to the other sets of evaporators.
Patent GB-992655-A (GB)
Title: Catalyst preparation
Inventor: ROWBOTTOM JACK
IPC: B01J37/32
Filed: 1962-10-16
Abstract: Improved catalysts are made by impregnating a porous solid with a solution of a soluble material and subjecting the impregnated solid to a freeze-drying operation.  Porous solids mentioned are Al2O3, SiO2-Al2O3, silicas, firebrick, pumice, MgO, TiO2, SiC, diatomaceous earths, carbon and active charcoal.  Impregnants may be solutions of Cu, V, Cr, Mo, Pt, Ni, and Co-Th combined.  Freeze drying consists of removal of the solution under cold low pressure conditions. U.S.A. Specification 3,033,800 is referred to.
Patent GB-619472-A (GB)
Title: Improvements in the construction of internal-grinding spindles
IPC: B24B41/04
Filed: 1946-12-12
Abstract: 619,472. Internal - grinding spindles. CHURCHILL MACHINE TOOL CO., Ltd., and ASBRIDGE, G. H. Dec. 12, 1946, No. 36698. [Class 60] In an internal-grinding spindle construction comprising a barrel and a spindle journalled in bearings in the barrel, the barrel portion is in two parts a, b with the joint at the radial end face c of the larger diameter portion of the barrel; the part a, which has a bearing d for the outer end of the spindle e, is threaded at f on to the exterior of the part b, cylindrical portions g, h being provided to ensure axial alignment. Ball bearings i, j for the spindle are provided at both ends of the portion b of the barrel. The spindle is in two parts e, k, the joint being at m towards the end of the larger diameter portion of the spindle; the outer part e of the spindle plugs into the end of the inner part of the spindle and there are relatively long cylindrical surfaces on the plug n and the socket into which it fits to ensure axial alignment; the plug and socket are threaded at o and there are radial faces at m on the two parts which are aligned and which are tightened by the screwed parts o.
Patent GB-1177775-A (GB)
Title: Means for the Control of Electric Motors
Inventor: HAMMANT FREDERICK ALFRED
IPC: H02P7/00
Filed: 1967-08-10
Abstract: 1,177,775. Control of D.C. motors. HAM MANT & MORGAN Ltd. 12 Aug., 1968 [10 Aug., 1967], No. 36866/67. Heading H2J. To ensure reliability of operation of a D.C. motor at low speeds pulses are superimposed on the output supply 4 to the motor (not shown), the control system comprising a rectifier arrangement R from which a substantially direct current is taken between points 1, 2, to supply the motor through the collector-emitter path of a transistor VT1, a potential divider RV1 across points 1, 2 providing the speed control, and a unidirectional pulsating current from the point 3 being supplied to the base of the transistor. A second transistor VT2 acts as an amplifier, the base of VT1 being connected to the supply 2 via the collector-emitter path of VT2 and a resistor R5. The base of VT2 is connected to the sliding contact of RV1 via fixed resistors R1, R2 and R3. A polarity reversing switch SW3 is coupled to variable resistor RV1 such that reversal can only be carried out: when RV1 is at a minimum. A capacitor C3 is switched into the base circuit of VT2 to form a time constant circuit with R 1 and R2 by which any sudden alteration of RV1 causes a gradual change in VT2 base voltage, load current and motor speed. The time constant is reduced by shorting out R1 by SW1. Resistor R6 discharges capacitor C3 when the delay is not required. The pulsating voltage is applied to the base of VT2 via capacitor C2 and resistor R4. The full-wave rectified voltage is smoothed by capacitor Cl.
Patent GB-348164-A (GB)
Title: Improvements in means for delivering or feeding eyelets in eyeleting machines
IPC: A43D100/02
Filed: 1929-12-03
Abstract: 348,164. Setting eyelets. THOMPSON, S. and THOMPSON, F. S., 26, Buxton Street, London Road, Manchester. Dec. 3, 1929, No. 36946. [Class 43.] In eyelet-feeding devices of the kind comprising a box provided in one of its walls with a slot or slots into or through which the shanks of the eyelets are projected, the eyelets then sliding or their flanges along the slots to a delivery shoot or shoots, a guard is adjustably mounted in front of the slot or slots so that it can be positioned to permit the shanks of eyelets of length longer than the width of the slot or slots to project into or through the slot or slots to their full extent, or positioned in such proximity to the slot or slots that while permitting the projection into or through the slot or slots of the shanks of eyelets of a length less than the width of the slot or slots, it will prevent such eyelets from falling out edgewise through the slot or slots. The eyelets are contained in a circular box 10 mounted on a horizontal axis and are agitated by an oscillating or rotary brush 11 and/or by rocking or vibrating the box. The box is provided with a filling-opening 10a covered by a hinged lid 12 secured by a clip 13. A plurality of slots 14 are provided in the circumferential wall of the box, the wall being cut away at 15 at the bottom of the slots to accommodate the upper end of a delivery shoot 16. The shoot 16 is provided with grooves 17 of T-section which align with the slots 14 and may lead to a single delivery shoot 18. The interior surface of the wall of the box is preferably formed with V-shaped ribs which direct the eyelets into the slots 14. A guard 21 is adjustably mounted in front of the slots 14 by means of slotted lugs 22 and screws 22a, and an adjustable guard 23 is also provided where the grooves 17 open into the delivery shoot 18. In a modification, the delivery shoot is arranged tangentially to the box, so that the eyelets are delivered with their flanged ends uppermost.
Patent GB-822129-A (GB)
Title: Improvements in or relating to tooth formation on toothed flexible belts
IPC: F16H7/02
Filed: 1957-11-28
Abstract: 822,129. Positive driving belts. CONTINENTAL GUMMI-WERKE A.G. Nov. 28, 1957 [Dec. 17, 1956], No. 37076/57. Class 80 (1). In a positive driving belt 2 having teeth 3 engaging in gaps 7 of a co-operating wheel 1 the teeth 3 are of trapezoidal form and the flanks 14 are formed as chords of a semi-circle 16, or lines parallel thereto, the diameter of which is equal to or slightly greater than the root width B of the teeth. The diameter of the circle is preferably co-incident with the centre line of the reinforcement 5 of the belt and the said chords pass through the ends of the diameter. The corners of the teeth are preferably chamfered and the gaps 7 in the wheel 1 are correspondingly shaped.
Patent GB-1140326-A (GB)
Title: Improvements in or relating to the continuous casting of metals
IPC: B22D11/128
Filed: 1967-08-11
Abstract: 1,140,326. Continuous casting. A. WERTLI. 11 Aug., 1967 [3 Sept., 1966], No. 37089/67. Heading B3F. An increased rate of intermittent withdrawal of a continuously cast strand 6 (from at least one mould 2 connected to a furnace 1 and surrounded by a cooler 3) by pairs of gripping rollers 8, 9, is said to be achieved, by employing an hydraulic motor 15 (having an intermittently operated valve 19 in its pressure-medium feed circuit 12, 14) to rotate at least one roller. Metal of fine structure is said to be thus produced. The valve 19 may be a magnetic valve operated by a pulse generator but as shown it is a valve operated by a cam 21 driven through a variable speed gear to vary the length of the cycle. A regulator 20 controls the quantity of medium fed to the motor 15. As shown the upper rollers 8 are releasably pressed against the strand 6 and the lower rollers 9 are all driven via a gear 13, a shaft 11 and an endless chain 10. Both sets of rollers may be pressed against the strand and one or several lower rollers 9 may be driven, each by its own hydraulic motor. One or more of the upper rollers 8 also may be drivable.
Patent GB-1250450-A (GB)
IPC: H01G4/32
Filed: 1970-07-31
Abstract: 1,250,450. Capacitors. HERCULES Inc. 31 July, 1970 [31 July, 1969], No. 37119/70. Addition to 1,171,560. Heading H1M. The dielectric separating the electrodes in a wound capacitor is a biaxially oriented film of an isotactic polymer of propylene, the film having a residual shrinkage at 120‹ C. of less than 3% in the machine direction and less than 1% in the transverse direction and having a roughness formed by projections of the polymer on at least one surface to aid impregnation. Film having the required properties may be obtained by contacting the biaxially oriented film with a heated roller at 135‹ C. for about 0À5 secs., then embossing it or forming ribs with a shaped heated roller. The thickness of the film is preferably 0À20 to 1À50 mils and the embossed depth 0À02 to 0À40 mils. The film may be polypropylene or a copolymer of propylene with, e.g., ethylene. Impregnants specified include pentachloronitrodiphenyl and chlorinated diphenyl ketones.