baber/WOPTO huggingface dataset:
Patent GB-735770-A (GB)
Title: Improvements in methods of and apparatus for making shell moulds
Inventor: CHEYNE ROBERT DOUGLAS
IPC: B22C23/00
Filed: 1952-11-24
Abstract: 735,770. Moulding-processes. POLYGRAM CASTING CO., Ltd. Nov. 23, 1953 [Nov. 24, 1952], No. 29680/52. Drawings to Specification. Class 83 (1). In a shell moulding process, a frame is attached around and at or near the edges of the working face of the pattern plate so as to stand up therefrom, and after the frame has been disconnected from the pattern-plate the frame and the half-mould thereon are stripped from the pattern plate and pattern by applying a force tending to separate the frame from the pattern plate by means acting otherwise than through holes in the pattern plate. The frame, or lugs or projections thereon, may project beyond the edge of the pattern plate. The frame and mould are stripped from the pattern by exerting force on 'the projecting portions, e.g. by an ejector mechanism moving perpendicularly to the plane of the frame, while the pattern plate is held, or the projecting portions may be rested on a support, e.g. a number of spaced vertical posts, while the pattern and plate are caused to drop away by giving the mould a tap or by lifting the support carrying the assembly and dropping it on a solid surface. Alternatively wedges may be inserted between the frame and pattern plate. In a further modification the pattern plate is made of magnetic material and pulled away by magnetic means. Alternatively the pattern plate may project beyond the frame and the forces be applied to the projecting parts of the pattern plate. The cross-section of the frame members may be concave on the inside as described in Specification 716,251, which is referred to, or such as to enable the mould to be removed from the frame after moulding. The frame may be of aluminium or aluminium alloy with a base of stiffer material such as sheet steel, and the pattern plate may be of cast iron or aluminium. Half-patterns may be mounted on each side of the pattern plate and removable legs may be fitted to the plate so that they may be changed from one side to the other to keep the half-pattern mounted on the underside clear of the bench when that side is not in use.
Patent GB-935788-A (GB)
Title: Improvements in reciprocating pumps
IPC: F04B15/02
Filed: 1961-08-17
Abstract: 935,788. Reciprocating pumps. M. SEBASTIANI. Aug. 17, 1961, No. 29793/61. Class 102(1). The liquid chamber 28 between a reciprocating piston 15 and a pump diaphragm 27 is connected to an accumulator 3 the piston of which may be spring loaded or, as shown, pneumatically loaded. The pump is suitable for pumping mortar and may be connected to a plurality of valve controlled outlets.
Patent GB-1464982-A (GB)
Title: Scanning system
IPC: G06K7/10
Filed: 1974-07-05
Abstract: 1464982 Label reading system INTERNATIONAL BUSINESS MACHINES CORP 5 July 1974 [26 July 1973] 29801/74 Heading G4M A system for reading bar coded labels passed over a scanning area e.g. in a supermarket scans the labels with a beam of light reflected from two oscillating mirrors locked together in phase and oscillating at different frequencies. A signal from a crystal oscillator 101 is divided by flip-flops 102, 103, 105 and circuit 104 to produce a 600 Hz signal which is amplified and fed to magnet coils 22 of a torsional deflector 20 to oscillate mirror 21. The signal from flip-flop 103 is fed via AND gate 113 OR gate 115 and AND gate 116 to divider 117 and flip-flop 118 to supply a 3À2 KHz signal via amplifier 119 to coils 27 of torsional deflector 25 to oscillate mirror 26. The mirror systems 20, 25 contain transducers 23, 28 supplying signals representing the motion of the mirrors. These signals are fed to sine to square wave converters 111, 120 and dividers 112, 121 to produce signals of frequency 6À25 Hz which are fed to a phase discriminator which has outputs indicating whether the phase difference is to be increased 123 or decreased 124. The increase signal feeds AND gate 109 and one shot 108 to produce a pulse having a maximum duration determined by the one shot. The AND gate 109 enables AND gate 114 to feed a higher frequency signal to the mirror coils 27. The decrease signal inhibits AND gate 116 to prevent a signal being fed to the mirror coils 27. The amplitude of the signals is controlled by detector 90, 95 (Fig. 1), sensing the limits of the scanning waveform. The compressed parts of the signal 31, 32 may be expanded by reflection in mirrors and directed back into the scanning area 35 (Figs. 6, 7 not shown).
Patent GB-1512015-A (GB)
Title: Braided electrical tape
IPC: G02B6/44
Filed: 1974-07-05
Abstract: 1512015 Braid THOMAS FRENCH & SONS (ELECTRICAL) Ltd 2 July 1975 [5 July 1974] 29832/74 Heading D1K A flat braid is formed with insulated electrical conductors 12 or 17 (not shown) contained between the braided yarns which incorporate metallic filaments, means 13, 15 being provided by which these may be connected to an earth lead. The braid may be made from synthetic or regenerated material, yarns or narrow strips of plastics, foil or fibrous material. Conductors 12, 17 are respectively connected in series and in parallel.
Patent GB-850940-A (GB)
Title: Improvements in and relating to electrical control systems
IPC: G05D23/22
Filed: 1957-09-23
Abstract: 850,940. Automatic temperature control systems. LEEDS & NORTHRUP CO. Sept. 23, 1957 [Oct. 4, 1956], No. 29859/57. Class 38 (4). In an automatic proportional control system for maintaining constant the magnitude of a variable, and having a network unbalanced in response to a deviation of the controlled variable, the on-off time of the system is varied by applying heat to resistors of the network during a first proportional state so as to compensate for variation in load. The temperature of a furnace 10 is detected by a thermocouple 14 connected to a self-balancing potentiometer having a balancing motor 21. A slider 28a of a potentiometer 28, forming adjacent arms of a bridge 300, is mechanically coupled to the balancing motor. The bridge 300 is energised from a transformer 301 and the remaining pair of arms are formed by resistors 302-305. The bridge out-of-balance voltage is fed to a transformer 312. The resistors 302-305 have substantial temperature coefficients and are associated with heater elements 302a-305a. When continuously heated the assemblies reach the same limiting temperature at different rates; assembly 304-304a having a greater thermal inertia than the other assemblies. The out-ofbalance voltage is amplified in a circuit comprising a double-triode 315 and at a predetermined amplitude; representative of an excess temperature, a relay 43 is actuated. A relay contact 43c opens to de-energise a furnace element 12 and a contact 43b opens to deenergise heaters 302a-305a. The assembly 304, 304a cools at a slower rate than the other assemblies, so tending to reduce unbalance of the bridge 300 caused by movement of the slider 28a by reducing the " off " time of the relay 43 relative to the " on " time. Conversely, with a reduction in temperature the unbalance is increased. A thermal relay 326, in circuit with the heaters, is energised through the switch 43b and for " on " times in excess of a predetermined duration alters the current to heaters 302a, 304a by a switch 325 to reduce bridge unbalance. In a modification, Fig. 3 (not shown) an additional thermal relay is connected to the heater asemblies so as to reduce bridge unbalance when relay 43 is de-energised for longer than a predetermined time.
Patent GB-225700-A (GB)
Title: Improvements in or relating to water waste preventers
IPC: E03D5/092
Filed: 1923-11-28
Abstract: 225,700. Clark, R., and Knieling, H. Nov. 28, 1923. Siphon discharge waterwaste preventers of the type started by a moving piston or bell are provided with a pulllever D slotted at E to take over a cranked pivot-pin A, the ends of which are accommodated in slotted lugs C formed on the cistern cover or on the siphon.
Patent GB-1110131-A (GB)
Title: Etching bath for the electrolytic etching of aluminium foils
IPC: C25F3/08
Filed: 1965-07-15
Abstract: Aluminium foil for electrolytic condensers is prepared by electrolytic etching with a nonpulsating current in a neutral aqueous etching bath, e.g. sodium chloride solution, by causing the surface of the foil to be partially and temporarily coated with a hydroxide layer by the action of steam or hot water e.g. by passing the foil under nozzles fed with steam or hot water jets or by using a heated bath and screening the foil from the applied electric field by insulating strips arranged transversely of part of the path of the strip.  In a modification the nozzles are placed outside the etching bath, and after an initial etching the foil leaves the bath to be subjected to the jets from the nozzles and is then returned to the bath.
Patent GB-158756-A (GB)
Title: Improvements in or relating to resilient tyres for wheels of motor road and other vehicles
IPC: B60C27/16
Filed: 1919-12-02
Abstract: 158,756. Rapson, F. L. Dec. 2, 1919. Jackets and covers.-In tyres of the kind described in Specification 141,927, the deflector h, fitted between the air-tube and outer cover c, is formed with side-walls j having beaded or like rim-seating edges i which are embraced by the thin edge-portions of the cover. The tread is grooved as described in Specification 142,045. The side-walls and edges of the deflector may be reinforced with fabric.
Patent GB-798859-A (GB)
Title: Protecting liquids in storage from deterioration by contact with air
Inventor: GRIFFITHS JAMES HAROLD
IPC: B67D1/08
Filed: 1954-10-20
Abstract: 798,859. Portable containers; emptying tanks. CLARK & CO., Ltd., T. & C. Oct. 20, 1955 [Oct. 20, 1954], No. 30172/54. Classes 66 and 21. [Also in Group XXIX] To prevent beer 6, Fig. 2, or other beverages containing alcohol from contacting the air that is admitted into a container therefor when some of the contents are drawn off, the container is provided with a float 5 substantially covering the liquid surface and projecting appreciably above said surface, the clearance space between the float and the container serving as a space for carbon dioxide gas. The carbon dioxide may be produced by the liquid itself or a small quantity of the gas may be supplied to the container via a suitable valve. The carbon dioxide, being heavier than air, accumulates in the narrow clearance gap between the float 5 and the container 4 to protect the liquid 6 from the air above it. The float has a concave under surface 17 and the upper surface 18 may be convex (as shown) or concave, the cover 19 of the vessel being domed outwardly or inwardly to match the upper surface of the float. When the upper surface is convex as shown, a hollow 22 is formed in the float below a venting device 21 to prevent disturbances of the gas blanket by the entering air. In both constructions of the flats a central pipe 23 joins the upper and under surfaces for the return of any liquid collecting in the hollow portion of the upper face. The base 24 of the vessel slopes slightly to one side. Projecting upwardly into the vessel from the lowest point in the base is a stand-pipe 25 shown in greater detail in Fig. 3. The pipe 25 is connected to a draw-off cock 26. The upper end of the stand-pipe 25 is closed but a large number of small holes 27 are formed in the pipe near its upper end. The stand-pipes 25 passes out of the vessel through a gland 28 and a threaded sleeve 29 rotatable about a pipe 25 but anchored to it against relative axial movement. The sleeve 29 is rotatable by a hand wheel 30 and engages a tapped bush 31 supported by a bracket 32. The pipe 25 can be raised or lowered by appropriate rotation of the hand wheel 30 affording limited adjustment of the height of the standpipe. Normally the stand-pipe is kept at its highest point but when the liquid level is low the stand pipe can be lowered to draw off more liquid. For cleaning out the vessel the whole stand-pipe assembly is removed. The container may be a casting of any suitable metal or it may be built up by welding. It may be lined with suitable materials for the product to be stored or it may be of stainless steel. The float is preferably made of sheet metal which may be stainless steel or some other ferrous or a non- ferrous metal protected by a plastic or other coating.
Patent GB-286012-A (GB)
Title: Improved manufacture of imitations of frosted glass, glass stainings and the like
IPC: B44F1/06
Filed: 1926-11-29
Abstract: 286,012. Goldscheider, R., and Tuschinsky, I. Nov. 29, 1926. Ornamenting.-Imitations of frosted or stained glass or the like are produced by impregnating a fabric with lacquer, and applying a layer of granulated glass or glass-beads to both sides of the fabric, or, alternatively, by mechanically working the surface of the lacquer on both sides, so as to produce a dense mass of small protuberances thereon. The lacquers used are preferably those known under the registered Trade- Mark " Schellan," and consisting of condensation products of urea and formaldehyde. The glass granules may be covered with a second layer of lacquer. The mechanical working of the surface mav be effected by means of rollers, or by projecting sand against it. The fabric may consist of wire gauze, the meshes of which are filled with lacquer, and decalcomania pictures or the like may be applied to the surface. Pattern effects resembling bead embroidery can be obtained by printing or painting the fabric after its impregnation with the lacquer, or by applying decalcomania pictures thereto.
Patent GB-847218-A (GB)
Title: Improvements in and relating to heat exchangers
Inventor: RITZ HUGO HEINRICH LUDOLF
IPC: F28F1/36
Filed: 1956-10-04
Abstract: 847,218. Tubular heat exchangers. PARSONS & CO. Ltd., C. A. Oct. 30, 1957 [Oct. 4, 1956], No. 30256/56. Class 64(3) In a heat exchanger comprising a plurality of tubular elements e.g. 1a-1d, each having external helical fins thereon channels between which are interrupted by axially extending baffles 3, e.g. as described in Specification 847,214, the baffles 3 of adjacent tubes are disposed so that they form the walls of a series of enclosed channels for the passage of a heat exchange fluid flowing over the finned outer surface of the tubes. In the form shown the latter channels are square in cross-section but triangular or other polygonal cross-sections may be utlized. When the channels so formed have an even number of sides, the helical fins on the tubes (e.g. 1a, lc), at the ends of one diagonal may be of opposite hand to those of the tubes (e.g. 1b, 1d), at the ends of the other diagonal.
Patent GB-699725-A (GB)
Title: Improvements in or relating to the heat-treatment of tobacco
IPC: A24B3/18
Filed: 1951-12-28
Abstract: 699,725. Treating tobacco. AMER - TUPAKKA OY. Dec. 28, 1951 [Sept. 12, 1951], No. 30263/51. Class 130. For high-frequency heat-treatment by, e.g. five, electrode pairs 32 connected to one or more electric generators (not shown), tobacco is conveyed by endless belts 3, 4 through a tunnel 1 of non-conducting and non-porous material such as glazed earthenware or synthetic resin and of square or rectangular cross-section, the discharge end only of which is shown. A shaft 25, powered through coned-pulley belt gearing from an electric motor, drives the belts 3, 4 at each end of the tunnel 1 by similar worm gearing 27, 20 and belts 15, 17. A discharge tray 29 may have mixing and, additionally, cooling means, and has a vapour vent 31. An entry tray (not shown) has tobacco discharged thereon by conveyer means and manually or mechanically fed therefrom between the belts 3, 4.
Patent GB-1408666-A (GB)
Title: Apparatus for controlling an element of a machine
IPC: G05B19/42
Filed: 1973-06-26
Abstract: 1408666 Automatic control of movement CINCINNATI MILACRON Inc 26 June 1973 [26 June 1972 31 May 1973] 30285/73 Heading G3N An apparatus controls an element of a machine during movement between two predetermined points in space, while maintaining a predetermined orientation, by responding to signals in a first coordinate system which are transformed to output signals, for controlling the machine element, defined in a co-ordinate system related to the geometric configuration of the machine. An automaton is controlled by specifying a desired position and orientation of a hand in rectangular co-ordinates, having an origin at the intersection of the axes of rotation of the base and shoulder joint, with position defined by x, y and z values and orientation by angles with respect to these axes. The values are transformed into a generalized system of co-ordinates related to the angular movements at the joints of the automaton and the lengths of segments between joints. The derived signals are used to control phase-modulated velocity servos of known type. As shown, actuators 56 of an automaton 58 are retroactively controlled by servo drive and interpolating circuit 64 responsive to feedback from a device 65. A control console comprises a device 44 which allows an operator to operate the automaton and a device 46 whereby the operator teaches a workcycle, in terms of position velocity and orientation, to the automaton; the work-cycle being held in a data store 47. A device 48 relates to functions of the automaton operation and a device 49 integrates the automaton to the process of which it is a part. The devices are interfaced through a unit 50 to a central processing unit 52. The CPU operates with programs stored in a unit 54 to command the operations of the actuator mechanisms 56. The program store unit 54 operates in conjunction with a first program 60 to provide, by the stated routines, command signals representing movements in the first co-ordinate system, and in conjunction with a second program 62 to provide command signals representing movements in the generalized co-ordinate system.
Patent GB-943385-A (GB)
Title: Vehicle door latches
IPC: E05B65/32
Filed: 1962-08-08
Abstract: 943,385. Latches. GENERAL MOTORS CORPORATION. Aug. 8, 1962 [Aug. 8, 1961], No. 30307/62. Heading E2A. A vehicle door latch comprises a pivoted bolt 106 for engagement with a striker, a movable detent 114 to hold the bolt in latching position, a movable time member 130 arranged to contact and be moved by the striker prior to engagement of the striker by the bolt as the door closes, and a connection between the timer member 130 and the detent, whereby, as the door closes, the detent is moved by the timer out of engagement with the bolt before the bolt engages the striker. As shown, the door latch comprises two assemblies, a latch operating assembly 56 secured to the jamb of the door and a latching assembly 58. Assembly 56 comprises a spring-loaded pushbutton lever 62, operable by pushbutton 36, bearing a stud 80 engageable in a slot 82 of a link 84 movable by a control rod 48 through a bell crank lever 86. A spring-loaded locking lever 90 pivoted at 92 to the door frame 60 terminates in an arm 94 movable by the inside handle. Lever 90 is connected by pin and slot means 76, 100 to a link 70 connected to link 68 overlying the lever 62. Assembly 58 comprises a bolt 106 mounted at 108 in a housing 104 having a latching nose 110 and formed with a slot 112. A pivoted detent 114 bears a blocking arm 118 which holds the bolt 106 against movement, an undogging arm 124, and an actuating arm 126 bearing a pin 128. The timer lever 130, biased by a spring 138, also mounted on the stud 108, extends partially through slot 104a of the housing and is formed with arms 124, 136 straddling pin 122 of the detent, which engages in the slot 112 of the bolt. To open the door from the inside:-depression of pushbutton 54 rotates lever 62 clockwise moving nose 74 of the link 70 to contact the actuating pin 128 of detent 114, thus raising the pin 122 along the length of slot 112 of the bolt to move the timer lever upwardly. When the pin 128 reaches the end of the slot 112 the bolt is swung out of the operative position. Upon release of the pushbutton 54 the members return to their initial positions by spring means. The door is unlatched from the inside through movement of a handle 44 (not shown) and bell crank 86 to actuate the pushbutton lever 62. On slamming the door-the foot 132 of the timer lever 130 engages the striker ahead of the bolt moving the detent lever blocking shoulder 118 free of the bolt. To lock the door from the outside-by keymeans rotation of cylinder 38 moves pin 77 of the locking lever 90 up the slot 100, so that the link 70 is in an idling position rendering movement of the lever 62 ineffective to actuate the bolt. "Keyless" locking is achieved by holding the outside pushbutton depressed while the door is slammed, thus moving pin 76 away from the undogging arm 124 of the detent. The striker 142 bears teeth 144,146 engageable respectively by the timer foot 132 and the bolt 106. A spring-pressed shoe 148 abuts the top surface of the housing 104 in the latched position.
Patent GB-967878-A (GB)
Title: Method of preparing oxidation catalyists
IPC: B01J37/00
Filed: 1962-08-08
Abstract: Acrylonitrile is prepared from ammonia, propylene and oxygen in a fixed bed reactor containing a Mo, Bi and Si catalyst, the latter having been prepared by forming a homogeneous solution of ammonium molybdate, a bismuth salt, silicic acid sel and a mineral acid, preferably nitric acid, in the absence of phosphonic acid and/or phosphates, and if desired in the presence of one or more compounds of Be, Ca, Sn, Ba, Zn, Cd, Li, Na and/or Ag and drying and calcining the homogeneous acid solution by spraying it on to a hot solid medium of aluminium alicate, corundum, quartz, magnesium aluminate, feldspar and granite. Examples are given. Specification 967,877 is referred to.ALSO:An oxidation catalyst containing Mo, Bi and Si is prepared by forming a homogeneous acid solution of ammonium molybdate, a bismuth salt, silicic acid sol and a mineral acid, preferably HNO3, in the absence of phosphoric acid and/or phosphates but in the presence of, if desired, one or more compounds of Be, Ca, Sr, Ba, Zn, Cd, Li, Na and/or Ag and drying and calcining the homogeneous acid solution by spraying it on to a hot solid medium, e.g. aluminium silicate, corundum, quartz, magnesium aluminate, feldspar and granite. Examples are given.  Specification 967,877 is referred to.
Patent GB-181748-A (GB)
Title: Improvements in and appertaining to burners for incandescent gas lighting
IPC: F23D14/12
Filed: 1921-08-29
Abstract: 181,748. Sutton, C. J. Aug. 29, 1921. Incandescent gas burners. - A gas nipple c is provided with an integral diaphragm e, having a. small aperture e<1> for the passage of gas, an air inlet a<1>, which may be adjusted by a clip h, and with two internal threads or with one internal thread and a, plain cup for connecting to a gas supply pipe d and a burner tube a.
Patent GB-211193-A (GB)
Title: Improvements relating to knock-off means for looms for weaving
IPC: D03D51/00
Filed: 1923-07-11
Abstract: 211,193. Ross, H. R., and Cunning- ham, R. July 11, 1923. Stop-motions, shuttle and like. - In a stop motion wherein the stop block 5 acts upon the starting and stopping handle 3 through an intermediate lever 1, the lever 1 is kept in contact with the block 5 by means such as a spring 7.
Patent GB-717339-A (GB)
Title: Improvements in studs for football boots
IPC: A43C15/16
Filed: 1951-12-31
Abstract: 717,339. Football studs. WOOD, A. Dec. 31, 1952 [Dec. 31, 1951], No. 30418/51. Class 17(3) A football stud of aluminium alloy or similar cast metal has a conical part 1 and a base 2 slightly concave on its underside 3 which also has a cavity 5. A downwardly extending annular projection 6 is provided near the periphery of the stud which cuts into the sole when the stud is attached by nails passing through holes in the base 2. In modifications, the projection 6 may not be continuous or projections in the form of spikes may be provided near the periphery of the stud. The size and shape of the cavity 5 may be varied from that shown.