baber/WOPTO huggingface dataset:
Patent GB-673674-A (GB)
Title: Improvements in writing pads or tablets
IPC: B43L1/12
Filed: 1949-05-26
Abstract: 673,674. Writing pads. PRINTATOR (SALES), Ltd., and SPARKS, E. Aug. 28, 1950 [May 26, 1949], No. 14137/49. Class 146 (ii). A writing pad or tablet, of the type in which a semi-transparent sheet of paper 4 covered by a protective sheet such as transparent celluloid 3 is mounted within an aperture 2 in a casing 1 above a dark coloured adhesive layer such as paraffin wax 5 and in which the layer of wax 5 can be separated from the semi-transparent sheet 4 for obliterating any writing on the pad, comprises a semi-flexible carrier 6 for the layer 5 and means for bowing the carrier to separate the layer 5 and sheet 4. The celluloid 3 and the sheet 4 are fixed in a frame 8 having at its ends strips 9 attached by lugs 9x and formed to receive the ends of the semi-flexible carrier 6 with the layer 5. The frame 8 is assembled in the casing 1 by two L-shaped metal strips 10 having inwardly turned flanges 11 into which a springy bottom cover plate 7 engages. The semi-flexible carrier 6 has a lug 15 fixed to it centrally so that upon the depression of an arm 17 rotating a spindle 13 a cranked portion 14 thereof draws the lug 15, plate 6 and layer 5 downwardly away from the sheet 4. The spindle 13 is biased by a spring 16 to maintain contact between the layer 5 and sheet 4; to prevent accidental operation of the arm 17 a pin 18 normally obstructs its movement. For operation of the arm 17 the spindle 13 is moved axially by pressing the end 13a. Several interconnected cranked spindles 13 may be used to bow the plate 6. Specification 274,636, [Class 146 (ii)], is referred to in the Provisional Specification.
Patent GB-238980-A (GB)
Title: Improvements in or relating to carburetters
IPC: F02M9/08
Filed: 1924-06-11
Abstract: 238,980. Goddyn, J. June 11, 1924. Spray carburettors.-The manually rotatable valve 3, which controls simultaneously fuel, air, and mixture, surrounds the fuel nozzle 9, and is provided with a hole 4 controlling the air inlet 2 and with a straight or curved edge 5 controlling the mixture outlet 1, the arrangement being such that, as the valve is open, the mixture outlet is at first greater than the air inlet, the difference diminishing as the valve is further opened until, in the fully open position, the air inlet and mixture outlet are equal in size. The fuel nozzle comprises an adjustable slot 14 formed between a fixed part 21, carried by the cover 21a and provided with a fuel passage 13, and a part 9, slidable on a projection 28 on the part 21 by the rotation of a nut 18. The parts 21, 9 are surrounded by a sleeve 19 having an oval slot 20 adapted to register with the slot 14, an outer sleeve 10, provided with an annular passage 11 and with a slot 11<a> registering with the slot 20, surrounding the sleeve 19. The hollow centre 8 of the throttle valve 3 surrounds the sleeves, and is provided with a V-shaped opening 7 the point of which is situated adjacent the slot 11<a>. The throttle valve 3 and the sleeves 10, 19 are secured together for simultaneous operation, the sleeve 19 being set so that the oval slot 20 overlaps the slot 14 to a minimum extent when the throttle valve 3 is closed. The valve 3 is provided with an air inlet 24 and mixture passage 25 for slow running.. During normal running, fuel from the slot 14 passes through the slots 20, 11<a> and the V-shaped opening 7 into the main air stream passing from the inlet 2 to the outlet 1; during slow running, the air entering through the inlet 24 passes through the slot 11<a> and, together with fuel from the slot 20, passes through the passage 11 and 25 to the outlet 1. The fuel inlet 12 is carried by an eccentric 15 and is thus adjustable in height with respect to the nozzle.
Patent GB-886879-A (GB)
Title: Textile-pressing machine
IPC: D06F71/34
Filed: 1958-05-02
Abstract: 886,879. Ironing presses. PAULSEN, G. May 2, 1958 [May 3, 1957], No. 14160/58. Class 138(2). A textile pressing machine, for pressing fabrics and the like, comprises upper and lower parts, one, or both, being provided with means for supplying steam thereto for dampening the fabric, and means for extracting the steam therefrom by suction, one of said parts being movably carried by a support for movement into and out of engagement with the other part, in which control means is provided and actuated by a programme switch for effecting automatically a selected one of a number of predetermined cycles of pressing operations. Any mechanical, fluid, or electrical system may operate the press and the switching system may be controlled mechanically, electrically or by photo-electric cells. The movement of the press head is arranged to operate the switching system automatically to control the durations of pressure application and steaming. As shown, a pair of trousers under the press may be steam pressed under the area indicated at 212A while at the same time, within the area 212B dry pressing a heated part is being effected. As shown in Fig. 1, a base part 2 has steam supplied to a chamber 8 and to a steam transfer chamber 9, by way of a valve 10. An air suction valve 11 leads to a suction outlet 16, the various valves being actuated by magnets.
Patent GB-867862-A (GB)
Title: Improvements in and relating to road working machines
Inventor: WEST FREDERICK CHARLES
IPC: E01C23/14
Filed: 1956-06-07
Abstract: 867,862. Road making machines. AMEY'S ASPHALT CO. Ltd. Sept. 6, 1957 [June 7, 1956; July 19, 1956; Nov. 26, 1956], Nos. 14180/56, 22399/56 and 36081/56. Class 107 A road heating machine comprises a cowl 11 (Fig. 2) equipped with burners and having at least one chimney 14 for the combustion products, the cowl being counterbalanced, e.g. by a spring 32 and resting on the ground 19 on skids 18. The cowl may rise over obstructions and a jack 31 may be used to lift it clear of the ground. The front and back plates of the cowl may have depending portions free to conform to the slope of the ground. In a modification (Fig. 6) the cowl 11 is pivoted at 47 on a vertical axis and the support 28 is pivoted at 42 so that the cowl may be offset parallel to the frame 41 of a road planing machine. Jacks 50 effect the slewing of support 28 and jacks 51 that of the cowl.
Patent GB-830839-A (GB)
Title: Apparatus for the reproduction of gramophone records
IPC: H04R19/06
Filed: 1957-05-03
Abstract: 830,839. Gramophones. MAURICE, D. M. April 25, 1955 [May 3, 1957], No. 14250/57. Class 40 (2). In an apparatus for the reproduction of gramophone records, a variable-capacitance type of pick-up modulates the output of an electronic oscillator having a frequency of not less than 50 megacycles per second, and electrical coupling between the pick-up arm and the fixed part of the pivot assembly is a reactive coupling without any mechanical continuous electrical conducting path. Fig. 2 shows an embodiment in which the coupling is inductive, while Fig. 1A illustrates a capacitive coupling. The pivotation of the pick-up arm 11 comprises a low-friction construction in which the arm 11 has a conical recess 14 and is supported thereby on a pivot pin 16. Optional circuits are shown, Figs. 1 and 4, and described for modulating, an oscillator circuit and rectifying for producing the signal output.
Patent GB-768350-A (GB)
Title: Improvements in the welded joints of angle-section purlins and like members
Inventor: FOWLER RICHARD JAMES
IPC: E04B1/58
Filed: 1953-05-21
Abstract: 768,350. Welding by fusion. OXLEY ENGINEERING CO., Ltd. May 20, 1954 [May 21, 1953], No. 14331/53. Class 83 (4). [Also in Group X] A roof structure includes a welded joint between two angle section purlins where they cross a support member or members and are welded to the latter, a gusset plate being welded to the purlins or a part welded thereto and to the support member or members and the purlins being straight or curved to form a ring segment. Two purlins 1, 2, Fig. 2, are each welded to a gusset plate 4 between their ends and to a bridge plate 9 welded to frame bars 10 to leave a parallel-sided space 3 between the ends which may be filled with weld metal. The gusset plate which is welded to the plate 9 may extend into the space and be welded to the base flanges of the purlins. The ends of the purlins may be cut away to form a V-shaped space therebetween. In a modification the purlin ends are butted, the vertical flanges being welded at 13, Fig. 4, and a gusset plate 4 is welded in line with the joint. Alternatively a strap 14, Fig. 5, may be welded across the butted and welded ends. A ring of purlins, e.g. for gasholder roof structures, may be formed which may be welded to single or back to back bars instead of to bridge plates and may be below rather than above them. According to the Provisional Specification the purlins may be in alignment.
Patent GB-543983-A (GB)
Title: Improvements in or relating to failure indicating systems for voltage conversion apparatus
IPC: G08B13/00
Filed: 1940-09-18
Abstract: 543,983. Supply systems for electrostatic precipitators. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Sept. 18, 1940, No. 14334. Convention date, Sept. 20, 1939. [Class 38 (iv)] [Also in Group XL] High voltages are supplied to the electrodes of an electrostatic gas cleaning apparatus from alternating current mains 14, through a step-up transformer 15, rectifiers 31, 32, and smoothing condensers 33, 34 ; the magnetic circuit of the transformer has a primary portion 16, a secondary portion 17 and a leakage path 18, preferably with an air gap 19. An under-current relay 42 closes the circuit of a red lamp R when the load on the secondary side of the transformer falls due to some defect in the transmission or in the precipitator, and is protected from voltage surges by the intervention of the transformer. Overload conditions, due to a short-circuit in the apparatus, operate through a winding 26 on the secondary portion of the magnetic circuit, to cause an under-voltage relay 41 to open the circuit of a green lamp G and close that of the red lamp R.
Patent GB-846618-A (GB)
Title: Improvements in catalytic heating apparatus
IPC: F23D14/18
Filed: 1958-05-05
Abstract: 846,618. Catalytic burners. SOC. LYONNAISE DES RECHAUDS CATALYTIQUES. May 5, 1958 [May 21, 1957], No. 14364/58. Class 75(1). A catalytic burner comprises a catalytic sieve 1 supplied with gas by ignition jets 5a, 5b and by a U-shaped perforated tube 4, a thermostatic safety device 14 located adjacent the upper surface of the catalytic sieve and controlling a valve 13 adapted to cut off the supply of gas to the U-shaped tube 4 when the temperature of the sieve falls below a safe level and a starting device 7 for controlling the supply of gas to the ignition jets 5a, 5b. The supply of gas to the U-shaped tube 4 is regulated by a cock 9 on the starting device. To start the burner the stem 35 of a spring- closed valve 32, Fig. 4, is pulled out to allow gas to flow from a supply pipe 6 to pipes 10a, 10b supplying the ignition jets 5a, 5b, which are then lit by a flame. After a period of about one minute the thermostat 14 opens the valve 13 and gas is supplied to the U-shaped tube 4. The stem 35 is then released manually or by a time switch cut off the supply to the ignition jets. The ignition jet 5a opens into a perforated pipe 11. The thermostat 14 comprises a rod of low expansion coefficient secured to the valve 13 and disposed in a tube of high expansion coefficient screwed to a variable extent into the casing of the valve 13. A spring urges the valve 13 to open.
Patent GB-438521-A (GB)
Title: Improvements in means for automatic regulation of the voltage of electric load circuits
IPC: G05F1/52
Filed: 1934-05-14
Abstract: 438,521. Automatic regulation; converting. NAAMLOOZE VENNOOTSCHAP STABILOVOLT, 77, Zwarteweg, The Hague. May 14, 1934, No. 14530. Convention date, May 13, 1933. [Classes 38 (ii) and 38 (iv)] A constant voltage is obtained across a circuit K1, K2, notwithstanding load fluctuations, by means of a discharge tube R connected in series with the load circuit and a second discharge tube N serving as a source of constant reference voltage. The second tube is associated with a series circuit comprising a potentiometer V connected in parallel with the load circuit in which a voltage is derived which is proportional to the difference between the instantaneous voltage of the load circuit and the constant reference voltage, and the series discharge tube R has a grid supplied from this series voltage. The series tube may be a rectifier if the supply source G is A.C. It may be gas filled and have an indirectly heated cathode. An auxiliary source of A.C. including a phase shifter may be included in the grid control circuit for the timing of the control impulses. The discharge tube N may be excited from the load circuit as shown in the Figure, but in a modification, Fig. 3, (not shown), the tube is excited from an independent source and a potentiometer in parallel with a portion of its discharge path provides the reference voltage in the aforesaid series circuit. The tube N may have additional electrodes giving subdivided voltages for another purpose.
Patent GB-705892-A (GB)
Title: Improvements in preparation of synthetic rubber latices
IPC: C08F36/04
Filed: 1952-06-10
Abstract: A synthetic rubber latex is produced by polymerizing an aqueous emulsion of butadiene-1:3 hydrocarbons or mixtures thereof with compounds containing a CH2=C<1 group and stopping the reaction by adding to the emulsion 0.05-1 part of the reaction product of an alkylene polyamine with sulphur per 100 parts of monomer initially present.  It is preferred that the reaction is stopped at from 45-90 per cent. conversion.  Specified polyamines are ethylene diamine, 1:2 propylene diamine, 1:2-, 1:3- or 1:4-butylene diamine, diethylene triamine, triethylene tetramine or tetraethylene pentamine and it is preferred that 100 parts of the polyamine are reacted with 15 to 100 parts of sulphur. Specified hydrocarbons are butadiene 1:3, isoprene, piperylene, 2, 3-dimethylbutadiene - 1:3, and they may be copolymerized with styrene, vinyl naphthalene, acrylic acid, methyl acrylate, methyl methacrylate, acrylonitrile, methacrylamide, methyl vinyl ether, methyl vinyl ketone and vinylidene chloride.  Specified catalysts are alkali persulphates, perborates percarbonates, hydrogen peroxide, diacetyl, dibenzoyl or acetyl benzoyl peroxide, tertiary butyl or cumene hydroperoxide, a -a 1-azobis-isobutyronitrile and p-methoxy benzene diazo-thio 2-naphthyl ether.  Redox catalysts may be used.  Other materials specified as being present during the polymerization are mixed tertiary C12, C14 and C16 mercaptans, tertiary dodecyl mercaptan, the potassium salt of disproportionated rosin acids, potassium pyrophosphate, chloride, sulphate, bisulphite and hydroxide, the sodium salt of naphthalene sulphonic acid condensed with formaldehyde, diethylene triamine and trisodium phosphate.
Patent GB-1532466-A (GB)
Title: Locks
IPC: E05C9/04
Filed: 1976-04-09
Abstract: 1532466 Multiple fastenings VIRO INNOCENTI SpA 9 April 1976 [1 Dec 1975] 14602/76 Heading E2A A two bolt lock for a door &c comprises a channel-shaped casing 1, which is substantially as long as the door is wide, in which are guided longitudinally the bolts 6 and 7 which in the locking position project from the casing to engage keepers in the door surround. The bolts are moved by pinion 12 engaging racks 106, 107 on the bolt ends and the pinion is itself operated by the rotor 23 of a cylinder lock 10 on the outside of the door and, optionally, by lock 11 on the inside. The rotor 23 is keyed to the pinion by rod 24 which is pushed by the key C into eccentrically sited hole 25 in the pinion against the bias of spring 39 acting on rod 38 which tends to push rod 24 away from the pinion and also serves to key cylinder 37 of lock 11 to the pinion. Lock 10 is protected against drilling by hard sleeve 29 and disc 31 surrounding it. The casing 1 may be telescopic so that doors of different width can be accommodated. An arrangement (Fig. 11) suitable for double doors, of which door P' is only rarely used, is also described. The main door P is provided with the double bolt lock S, one bolt of which engages casing 57 on door P'. Casing 57 guides only one bolt which may engage keeper 53 and which can be held in either the fastening or the unfastening position by means of screw 54. In the former case only door P is used, in the latter operation of the main lock permits both doors to open.
Patent GB-1268460-A (GB)
Title: Polyimide grinding wheels
Inventor: BRUSCHEK DIETER KLAUS
IPC: B24D3/28
Filed: 1970-03-26
Abstract: 1,268,460. Abrasive wheels. E. I. DU PONT DE NEMOURS & CO. 26 March, 1970 [26 March, 1969], No. 14821/70. Heading B3D. [Also in Divisions C3 and C4] An abrasive wheel is obtained by forming a rim comprising 6-35 vol. per cent of 50-200 Tyler grit size synthetic diamonds, which are coated with a barbed metal coating of average thickness 10-15% of the average linear dimension of the diamonds, the barbs being 0À3- 30 microns high and 0À3-30 microns wide at the base, the metal coating comprising 3 to 17À5 vol. per cent of the rim and 47-91 vol. per cent of a phase, at 50% of which is a coalesced aromatic polyimide of inherent viscosity at least 0À1, and then mounting the rim on a core, preferably of aluminium or aluminium-filled phenolformaldehyde resin.
Patent GB-745073-A (GB)
Title: Improvements in or relating to rotors for axial-flow compressors and like machines
Inventor: MCLEAN DONALD
IPC: F01D5/30
Filed: 1953-05-27
Abstract: 745,073. Axial-flow compressors. ROLLSROYCE, Ltd. May 17, 1954 [May 27, 1953], No. 14825/53. Class 110(3) In a rotor for an axial-flow compressor in which the rotor blades are pivotally mounted on the periphery of a disc or drum, a pivot pin for a blade is restrained against displacement axially of itself by a plate member which engages a circumferentially-extending groove on the pivot pin, means being provided to locate the plate member against displacement relative to the disc or drum. A multi-stage axial-flow compressor rotor comprises a number of discs 10, mounted on a common shaft and spaced apart by for instance, flanges 21. The rotor blades 12 are pivoted 'at their roots 14 between annular flanges 11a, 11b by means of pivot pins 15. Plate - members 16 have semi-circular notches 18 which engage annular grooves 17 on the pivot pins 15; each member 16 co-operates with, say, five or, as shown, three pivot 'pins 15. Each plate member 16 engages 'at its outer periphery in a channel 22 and is restrained against circumferential displacement by the engagement of bent lugs 23 with notches formed in an annular rib 25, and against radial displacement by a springy tongue 24 of less thickness than the remainder of the member 16 and having a rib 27 which engages in an annular channel 26.
Patent GB-940109-A (GB)
Title: Electric circuit breakers
IPC: H01H73/04
Filed: 1962-04-17
Abstract: 940,109. Electrically released switches; snap action switches; contact members for switches. WESTINGHOUSE ELECTRIC CORPORATION. April 17, 1962 [May 19, 1961], No. 14828/62. Heading H2B. The subject-matter of this Specification is identical with that of Specification 940,108 [Division H2] but the claims are concerned with the contact assembly. Two contact arms 27, carrying contacts 25 at one end, support, at the other end, a rod 31. Slots 36 in the arms 27 engage a shaft 33 about which the arms pivot and a spring 29 between shaft 33 and rod 31 biases the shaft 33 towards the bottom of the slots. When the arms 27 are moved into the closed position by members 38 spring 29 is strained and exerts a closing force on the contacts.
Patent GB-1491562-A (GB)
Title: Weighing machine
IPC: G01G1/18
Filed: 1975-04-10
Abstract: 1491562 Linkwork CARL SCHENCK AG 10 April 1975 [5 Oct 1974] 14835/75 Heading F2K [Also in Division G1] A mechanism for transforming an input movement into an output movement comprises two Watt straight line linkages A, B, one arm 1, 10 of each linkage being provided by a common lever. The arms provided by the lever may be separate arms at 90 degrees, Fig. 1, or 180 degrees Fig. 2 (not shown). Alternatively, the arms may be provided by a single armed lever 63, 73, Fig. 3. The mechanism may increase or decrease the magnitude of the movement.
Patent GB-1462557-A (GB)
Title: Metnod of producing mineral binder
IPC: C04B7/44
Filed: 1975-04-10
Abstract: 1462557 Producing hydraulic mineral binder GOSUDARST VSES PROEKT I NI INST TSEMENT PROMYSHLEN 10 April 1975 14848/75 Heading C1H Hydraulic mineral binder is produced by exposing an initial stock mixture therefor to an ionizing radiation in such a manner that the absorbed radiation dose is at least 1 Mrad/s. The ionizing radiation may be gamma rays or accelerated electrons. In an apparatus for manufacturing the binder, initial stock is charged at 2 into a working chamber 1 in which a vacuum is maintained, passed by conveyer 4 under means 6 and 7 for maintaining a uniform thickness of material, under ionizing source 5 and discharged at 3. Binders include Portland cement, alumina cement, plaster, calcareous binder, magnesia and dolomite.
Patent GB-527614-A (GB)
Title: Improvements in or relating to interlocking concrete building blocks
IPC: E04B2/56
Filed: 1939-05-18
Abstract: 527,614. Bricks &c. DAVIES, W. R. May 18, 1939, No. 14858. [Class 87 (i)] Interlocking concrete building blocks are adapted for external coverings for buildings, especially military ones as they are water, fire and splinter proof. The blocks do not need cementing, but can be fixed to walls by nailing or screwing after the manner of roofing tiles. The blocks, Figs. 1, 3, are formed at top and bottom with a known rebate 4, 5, in reversed relationship and a similar rebate 6, 8, at each end. In the invention a tongue 7 is formed in the rebate 6 to engage a complementary groove similar to 9 in the adjacent block. This tongue and groove affords a passage for rain preventing it getting behind the blocks. The lower rebate 5 has a groove 12 for engagement with a tongue on an adjacent block. Fixing holes 13 are provided in the rebates 4, 6. The blocks may be made in various thicknesses, reinforced with wire and made in any colour.
Patent GB-438526-A (GB)
Title: Improvements in or relating to door-stops
IPC: E05C17/14
Filed: 1934-05-17
Abstract: 438,526. Stays. ROBERTSHAW, E. G. F., 13, Lower Green, Baildon, Yorkshire. May 17, 1934, No. 14879. [Class 65 (i)] A door stay comprises a bar slidable through a socket and having a lug to limit opening of the door by engaging an abutment on the socket, the socket having deflecting means for tilting or angularly displacing the lug as it reaches the socket and before it engages the abutment to enable the lug to pass a second abutment behind which it engages, on return to its normal position, to hold the door open. In the form shown, the bar 20 has one end down-turned to pivot and rock in a bracket 23 on the door, this end being provided with a weighted handle which keeps it vertical, while the other end, which slides through an aperture 30 in a socket 25 fixed to the lintel, has a horizontal lug 21 which engages an abutment surface 29 on the socket to limit opening of the door. An abutment 26 projects above the floor 27 at the front of the socket, and has an inclined surface 33 whereby the lug is tilted about its end, on reaching the socket, so that it can pass through an inclined slot above the abutment 26 and then drop behind this abutment, on resuming the horizontal position owing to the weight of the handle at the other end of the stay, to rest on the floor 27. In order to allow the door to close, the stay must be rocked by means of its handle to bring the lug into alignment with the slot in the front of the socket. A modified form of socket formed of sheet metal is described. In a further modification the lug 21 is bent slightly upwards, the floor or the socket being correspondingly inclined while the slot in the front of the socket is horizontal, with a forwardly-bevelled upper surface.