baber/WOPTO huggingface dataset:
Patent GB-379572-A (GB)
Title: Improvements in or relating to the manufacture of pigments
IPC: C09C1/00
Filed: 1931-11-27
Abstract: Refractory, non-poisonous yellow pigments suitable for use in the ceramic and enamel industries are prepared by calcining at about 1100-1500 DEG  C., one or more refractory white oxides, serving as colour carriers and suitable as opacifying agents, such as stannic or zirconium oxides, with preferably small amounts of vanadium and/or molybdenum oxides or compounds yielding the same. The colour carriers may be mixed with preferably small quantities of one or more other white oxides which increase the refractory nature or influence the colour such as silica, alumina, or titanium dioxide, or colouring oxides, such as those of tungsten, uranium, iron, or manganese, for example in quantities of 1-2 per cent, before calcining.  Examples describe the manufacture of pigments for glazes and enamels by calcining stannic oxide with aluminium hydroxide and ammonium vanadate, or with aluminium hydroxide or silica and a mixture of ammonium vanadate and molybdate, and by calcining zirconium oxide with alumina or silica and ammonium vanadate.
Patent GB-670008-A (GB)
Title: Improvements relating to hydraulic follow-up systems
IPC: F15B9/12
Filed: 1948-12-21
Abstract: 670,008. Fluid-pressure servomotor-control systems. JENNINGS, H. W. K. (Electrol, Inc.). Dec. 21, 1948, No. 32981/48. Class 135. In a system for controlling the supply and exhaust of pressure liquid to a servomotor, the actuating member is pivotally mounted on a member connected with and movable by the servomotor and is connected to the operating rod of the servomotor control valve by a pivot which is freely movable along a guide in the same direction as the actuating member, the guide serving to limit the movement of the pivot. As shown, the actuating member comprises a forked lever 10, Fig. 1, pivotally mounted at its lower end on a rod 12 connected by a link 13 and a lever 19 to a double-acting servomotor 21 and secured intermediate its ends to a rod 22 freely guided in lost-motion slots 24, Fig. 3, provided in pillars 25 carried by the valve casing. The rod (22) is connected to valve operating rods 55, 67, slidably mounting inlet valves 50, 42 and exhaust valves 63, 64 respectively. The valves 50, 42 are mounted on the rod 55 with their heads 50c, 42c adjacent each other and urged apart and towards their seats by springs 72, 73 separated by a loose collar 74. The positions of the valves are adjustable by nuts 58, 59 so that both are seated when the lever 10 is in its neutral position. The valves 63, 64 are mounted on the rod 67 so that their heads 63c, 64c are remote from each other and urged towards their seats by springs 75, 76. The rod 67 is made in two parts screwed together and formed with shoulders 70, 71 so that the valves 63, 64 may be adjusted to their seated positions with the lever 10 neutral. On clockwise movement of the lever 10 limited by the slots 24 the operating rods 55, 67 unseat the valves 50, 63 to supply pressure liquid to the left end of the servomotor 21 through ports 32, 54 and exhaust liquid from its right end through ports 46, 34. Hence the piston 20 is moved to the right an amount corresponding to the movement of the lever 10 and in so doing rotates the lever 19 clockwise to move the link 13 to the left and return the rod 22 to its mid position with respect to the slots 24, on the knob 11 of the lever 10 being held stationary, whence the valves 50, 63 are closed. Anti-clockwise movement of the lever 10 unseats the valves 42, 64 to cause leftward movement of the piston 20 which again returns the rod 22 to its neutral position. Continuous movement of the piston 20 is possible by continued application of force on the knob 11.
Patent GB-1136879-A (GB)
Title: Cyclic positioning mechanism
IPC: B21J13/14
Filed: 1967-07-18
Abstract: 1,136,879. Linkwork. TEXTRON Inc. 18 July, 1967 [18 July, 1966], No. 33032/67. Heading F2K. [Also in Division B3] Apparatus for actuating a member 61, Fig. 3, such as an ejector pin in a heading machine, comprises a first lever 41 pivoted at one end 40 to a fixed frame 12 and whose other end 42 is adapted to actuate the member 61, a second lever 39 pivoted at one end 40 to the frame and whose other end 38 is engaged by driving means 37, and a third lever 53 pivoted at 52 to the frame and bearing at its ends 54, 55 upon the first and second levers thereby to transmit motion from the second to the first levers. The heading machine has a reciprocating gate G, Fig. 1, carrying one or more punches P for acting upon a workpiece in a die 62. After heading, the workpiece is ejected from the die by the pin 61 which is actuated without backlash by plunger 60, levers 41, 53, 39, adjustable tappet 36, 37, lever 26, Fig. 1, rod 21, lever 19 pivoted at 22, and a pair of cams 13, 14 on shaft 15. Lever 26 is in two parts 27, 28 interconnected by a bolt 34. Lever 53, Fig. 3, is pivoted at 52 on a slide 51 which is adjustable by a screw 48 for varying the stroke of the ejector pin 61. Slide 51 is locked in its adjusted position by nut 49. Lever 41 is biased to its inoperative position, limited by an adjustable stop 59 by a spring-loaded plunger 63. In another embodiment, Fig. 5 (not shown), the first and second levers (71), (76) are mounted on separate spaced pivots (75), (77); the lever 76 is actuated direct by cam (70) to retract the ejector pin and the latter is moved on its ejection stroke by a spring-loaded plunger 79.
Patent GB-1235405-A (GB)
Title: Photographic processing
IPC: G03D3/06
Filed: 1969-07-01
Abstract: 1,235,405. Photographic apparatus and processes. INTERNATIONAL BUSINESS MACHINES CORP. July 1, 1969 [July 12, 1968], No. 33050/69. Headings G2A and G2C. A photographic plate 14 is developed by immersion in a body of developer, an electrode 30 having a positive potential being located in the developer opposite the exposed surface of the plate so that negatively charged waste produced at the image areas of the plate are attracted to the electrode. A negative electrode 40 is spaced below the lower end of the plate 18 and has a raised ridge 44 from which bubbles of hydrogen are evolved by electrolysis, the bubbles flowing upwardly adjacent the face of the plate to scrub the emulsion surface and break loose or dislodge the negatively charged particles. The tank has three outlet conduits, one, 92, being shown, for developer, fixer and water, and three inlet conduits, the liquids being supplied from tanks under the action of pumps and a controller consisting of a cylindrical drum that is rotated at a constant speed to activate micro-switches. The tank may be cylindrical within which a spool having spiral grooves on the inner surfaces of its flanges may be placed, an electrode being mounted in one of a pair of parallel grooves.
Patent GB-1158471-A (GB)
Title: Embossed Thermoplastic Sheet Material
Inventor: DUERDEN ALAN
IPC: B29C59/02
Filed: 1966-07-22
Abstract: 1,158,471. Embossing. IMPERIAL CHEMICAL INDUSTRIES Ltd. 12 July, 1967 [22 July, 1966], No. 33069/66. Heading B6J. Suede-like material is produced by impressing a thermoplastic sheet material which has been heated to render the surface plastic, with an embossing surface having a multiplicity of surface indentations having a depth in excess of 0À002 inch and a surface density in excess of 400 indentations per square inch, the embossing surface being made of a silicone elastomer having a Young's Modulus selected from the range 250-1000 pounds per square inch, and separating the embossed sheet from the surface. The embossing surface may be a plate or roller, the embossing pressure may be 10-1000 pounds per square inch, and the embossing temperature (when treating vinyl polymers and copolymers e.g. plasticized P.V.C.) may be 80-200‹ C. The sheet material may be heated by infra-red radiation or by contact with a hot platen. The sheet material may be coated with a dissimilar thermoplastic material, e.g. a polymer of methyl methacrylate, before embossing.
Patent GB-1012031-A (GB)
Title: Improvements in or relating to display apparatus
Inventor: BARNES ARTHUR GEORGE
IPC: G01S7/22
Filed: 1962-08-30
Abstract: 1,012,031. Optical apparatus. ENGLISH ELECTRIC AVIATION Ltd. Aug. 26, 1963 [Aug. 30, 1962], No. 33364/62. Heading G2J. [Also in Divisions B7, H3 and H4] The pilot of a real or simulated aircraft views displays on cathode-ray tubes 10, 15 (see Division H3) through a collimating system including water-filled lenses 11, 12 and a semi-reflecting surface 13. A simulated windscreen frame 14 is also placed in the optical path.
Patent GB-1131538-A (GB)
Title: An electrical circuit for use in the measurement of acceleration
Inventor: HOLMES ROBERT THOMPSON
IPC: G01P15/16
Filed: 1967-07-20
Abstract: 1,131,538. Measuring speed. ROLLS - ROYCE Ltd. July 20,1967, No.33382/67. Heading G1N. [Also in Division G4] An arrangement for measuring the time taken for the speed of an engine shaft 10 to change from one value to another comprises means for generating pulses having a frequency dependent on the speed of the shaft, means for measuring the interval between consecutive pulses, means providing a first signal when the first speed has been reached and means for providing a second signal when the second speed has been reached and means measuring the time between these signals. The pulses may be generated by an apertured disc 16 and photo-cell 24 or by a magnetic arrangement. Alternate pulses set and reset flip-flop 40 the output of which is therefore a series of pulses each of which represents by its length the time between a consecutive pair of pulses. The pulses are applied to gate 50 to let 1Mc/s pulses pass to four-decade counter 64. The output of the four-decade stages are applied to number recognisers 82, 88 representing the higher speed and the lower speed respectively. As the shaft accelerates the unit 88 responds at the lower speed and sets flip-flop 96. When the higher speed is reached the unit 82 responds and the flip-flop 96 is reset. Gate 100, opened by the set output of flip-flop 96 passes 1Kc/s pulses to counter 110 which indicates in milliseconds the time taken to accelerate from the lower to the upper speed. Counters 64 and 110, and the digital units 82, 88 may be replaced by analogue circuits Specification 1, 096, 449 is referred to.
Patent GB-1374830-A (GB)
Title: Exhaust gas manifold for an internal combustion engine
IPC: F01N3/26
Filed: 1972-07-18
Abstract: 1374830 I C engine exhaust manifolds; purifying exhaust gases ARVIN INDUSTRIES Inc 18 July 1972 [3 Dec 1971] 33482/72 Heading F1B A shell 25 carried within a shell 10, e.g. of cast or sheet metal, has inlet conduits 56 and an outlet conduit 40 projecting outwardly into inlet conduits 16 and an outlet conduit 20 on the shell 10. A shell 45 or a part-annular baffle member (45'), Figs.3 and 4 (not shown), carried within the shell 25 directs flow from the conduits 56 to pass adjacent the ends 35 of the shell 25 to the conduit 40. The shells 25, 45 and baffle member (45') are formed of sections 26 to 29, 46 to 49 and (46' to 49') in relatively slidable engagement to permit thermal expansion. The conduits 56, 40 are slidable in the conduits 16, 20 and the shell sections 26 to 29 are slidably supported on arcuate brackets 37 mounted on the shell 10. Compressible thermal insulation material 60 is provided between the shells 10 and 25. Air may be introduced with exhaust gases at the conduits 16. Reference has been directed by the Comptroller to Specifications 1301377 and 1301378.
Patent GB-1030556-A (GB)
Title: A clip holder and applicator
IPC: A61B17/10
Filed: 1964-08-17
Abstract: 1,030,556. Clip applicators. M. E. BROWN. Aug. 17,1964, No. 33511/64. Heading A5R. A clip holder and applicator 30 comprises arms 32, 34 joined by deformable bail 36, and has grooves 38 and abutments 40 for retaining the clip in position. The holder is also provided with abutments 46 and 48 for limiting the displacement of arms 32, 34 when they are pressed together to force the clip arms together and thus join the tissue intended to be joined. The applicator may be made of polyacrylate, polystyrene, cellulose acetate, cellulose acetate-butyrate, polyvinyl chloride or polyvinyl acetate.
Patent GB-983546-A (GB)
Title: Control system for automatic electric apparatus
IPC: H02P7/00
Filed: 1961-09-19
Abstract: 983,546. Switching systems; control of A.C. motors. TELEMECANIQUE ELECTRIQUE. Sept. 19, 1961 [Oct. 12, 1960], No. 33572/61. Headings H2H and H2J. An arrangement for performing a switching sequence by static elements comprises a plurality of monostable flip-flops, operating as relays having two outputs alternatively energizable and one input, also And-circuits having two inputs and one output, the And-circuits and flipflops being connected to give the switching operation required. The And-circuits and flip-flops may be arranged for individual removal from a switchboard. In an arrangement for starting a synchronous motor by means of an autotransformer in which contacts C 1  are first closed to connect the part T 1 -T 3  as a choke, contacts C 2  are then closed giving a reduced supply voltage, contacts C 2  are then opened, C 3  closed, and C 1  opened, the switching and interlocking are performed by Andcircuits E and flip-flops B controlling the relays C 1 -C 3  through amplifiers A 1 -A 3 . The And-circuits may be provided with test points 30, 31 and the flip-flops may comprise a pair of asymmetrically connected transistors.
Patent GB-879316-A (GB)
Title: Improvements in and relating to apparatus for the thermal decomposition of sawdust
Inventor: NICOL DONALD LAURENCE
IPC: F24B13/02
Filed: 1957-10-29
Abstract: 879,316. Apparatus for producing smoke from sawdust. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 10, 1958 [Oct. 29, 1957], No. 33737/57. Addition to 781,591. Class 81 (1). In an apparatus for producing smoke from sawdust according to the parent Specification, the sawdust is maintained as a fluidized bed at the base of a diverging chamber by means of a gas, e.g. air which is supplied through one or more openings in the chamber wall at the lower end. The chamber may be of the forms shown in Figs. 1 and 2, i.e. it may be an inverted, truncated cone with an angle of divergence of about 11 degrees or it may diverge more rapidly, e.g. at about 20 degrees at the lower end where the bed is maintained and the angle decreased further up to about 5 degrees. The lower end may include an escape pipe 15 and 15a for particles too heavy to be fluidized and an additional gas supply tube 16 and 16a may be incorporated within it. The gas enters through one or more openings 14 and 14a in the chamber wall or preferably through an annular port which may be adjustable as shown in Fig. 3. The gas may be pre-heated by passing through a heating chamber 31 in Fig. 1 fitted with baffles 28 and a heater 29, the chamber being disposed about the part of the decomposition chamber 12 and 12a which holds the bed, the whole being lagged. The sawdust may be introduced through the side of the decomposition chamber or preferably may be introduced in the gas stream through the pipe 26 in Fig. 3. Specification 862,837 also is referred to.
Patent GB-341597-A (GB)
Title: Improvements in forging machines
IPC: B21J9/06
Filed: 1929-11-06
Abstract: 341,597. Forging-machines. JOHN, F., 5, Lohengrinstrasse, Oberkassel, D³sseldorf, Germany. Nov. 6, 1929, No. 33858. Convention date, Nov. 16, 1928. [Class 83 (iv).] The header slide s of a horizontal forging machine has the slipper m extended rearwardly and downwardly to a position under the crank shaft q to counteract the couple set up by the pressing operation which tends to deflect the slide and cause jamming. The gripping die slides a, b have the upper slippers g extended beyond the body cheeks and the slide a is actuated by toggle levers c, d, the end of the lever c which embraces the end of the lever d being formed so as to extend above, below and on both sides beyond the thin return link f, and the depth of the contacting surfaces being equal to that of the lever d to ensure low working pressure intensity. The other die slide b is actuated by an eccentric e and link t having a head with a large contacting surface bearing directly against the slide.
Patent GB-411129-A (GB)
Title: Improvements in and relating to coin-freed delivery machines
IPC: G07F11/54
Filed: 1932-11-30
Abstract: 411,129. Coin-freed article-delivery apparatus. FULLER, M. W., Mehalah, Alderton Hill, Loughton, Essex. Nov. 30, 1932, No. 33885. [Class 27.] Articles stored in compartments of rotary drums.- Articles, such as cigarettes 15, Figs. 3 and 6, are stored singly in grooves 14 on the outside of a rotary drum 13 which is provided on its interior surface with teeth 22. In the hollow interior of the drum is arranged a main frame 10 on which is mounted the entire mechanism for effecting a step-by-step rotation of the drum when desired, and also the entire manipulating mechanism, rendered operative by the insertion of a coin, for effecting delivery of an article. The frame has bolted thereto top and bottom plates 12, 9 which hold in position a glass cylinder 11 surrounding the drum. In the construction shown in Figs. 3 and 6, the articles are brought in succession over a delivery opening 24 in the base plate 9, the stepwise rotation of the drum being effected by an operating knob after insertion of a coin. Backward rotation of the drum is prevented by a pawl 31 engaging teeth 33. In a modified construction, Figs. 8 and 9, suitable for bending packets of medicinal tablets the drum is rotated stepwise by an operating knob to bring a selected packet over a delivering opening 240 normally closed by a pivoted slide 46, which is rocked to allow the packets to drop after the insertion of a coin and the depression of a button 51. The spindle of the operating knob has an arm 34 with a spring-pressed pawl 35 which engages notches 36 on the interior surface of the drums. The arm 34 works between stops 37, and a pawl 38 prevents backward rotation of the drum. The machine may carry two or more articles arranged one above the other in each compartment. Coin action, mechanical-connection.-In the construction shown in Figs. 3 and 6, the coin inserted through a slot 20 in the top plate 12 couples a forked arm 18 on the spindle 16 of the operating knob with the teeth 22 on the drum. The arm works between two stops 26, 29 and the coin rests initially on a support 21. When the arm 18 is actuated to move the drum through the space of the tooth, the coin drops off the support and the arm is returned by a spring 28. In the modified construction, the coin 41, inserted in a shoot 39, rests against a pin on a lever 43 connected by a link 45 to the slide 46. By depressing the button 51, a lever 48 presses the coin downwards moving the lever 43 aside to withdraw the slide 46. The lever is held in this position by a pawl 52 engaging a pin 53 until the next stepwise rotation of the drum, when a pin 54 on the spindle of the operating knob releases the pawl. Coin-slit closing-devices.-The drum may operate a star-wheel which actuates a coin-slit closing-plate when the machine is empty.
Patent GB-1400179-A (GB)
Title: Process for the preparation of fluorocarbon waxes
IPC: C08F8/50
Filed: 1972-07-20
Abstract: 1400179 Degradation of perfluorocarbon polymers HOECHST AG 20 July 1972 [22 July 1971] 33964/72 Addition to 1357380 Heading C3P A fluorocarbon wax is prepared by thermal cracking of a perfluorocarbon polymer at a high temperature and a partial pressure of the degradation products of 5-100 atmospheres gauge with shearing and frictional force applied to the reactants. Optionally the cracking may be carried out in the presence of an inert gas and with a catalyst. In examples polytetrafluoroethylene waste is cracked by heating in a kneader or kneader extruder either in batches or by a continuous process, under nitrogen.
Patent GB-743963-A (GB)
Title: Improvements in or relating to cargo stowage devices in sea-going vessels carrying bulk cargo
IPC: B63B25/04
Filed: 1953-12-08
Abstract: 743,963. Carrying bulk cargo. BIBOLINI, G. B. Dec. 8, 1953 [July 24, 1953], No. 34172/53. Class 113. In an arrangement of cargo stowage devices provided in sea-going cargo vessels for dry cargoes in bulk comprising a plurality of plate elements a hingedly secured to the upper plating d of the double bottom of the vessel, the plate elements form partial bulkheads in their raised position and serve to concentrate the cargo at the centre of the vessel and locate it approximately under the hatches. The plate elements are manoeuvred by chains or cables e and gears and shafts f. Longitudinal walls G, G<SP>1</SP> pro. vided in the upper part of each side of the hold h are inclined at the angle of rest generally assumed by the cargo to allow complete filling of the hold without the necessity of levelling. The walls form with the deck, bulkheads and sides of the vessel spaces g, g<SP>1</SP> which may be used for carrying ballast or additional cargo.
Patent GB-748108-A (GB)
Title: Automatic pilots for ships
IPC: G05D1/02
Filed: 1953-12-09
Abstract: 748,108. Automatic steering control systems. SPERRY CORPORATION. Dec. 9, 1953 (Jan. 7, 1963], No. 34265/53. Class 38 (4). When a hand-operated lever 47, Fig. 4, is moved about a horizontal pivot axis 61 into the " Auto Pilot " position, switches 70, 73 are closed and relays 75, 77 energized so that a gyro-compass 1 controls a rudder 19 to maintain a ship on a set course. Under these conditions a D.C. step-by-step transmitter 5 associated with the phantom ring of the gyro-compass is connected to a repeater motor 7 geared to a potentiometer 13. Potentiometer 13 is associated with a rudderoperated potentiometer 17 to form a bridge circuit, output from which, on course deviation, operates relays 25, 29 through a magnetic amplifier 21 to start a motor 27 in the appropriate direction to correct course by rudder adjustment. Overall sensitivity is adjustable by rheostats 39, 39<SP>1</SP>, 43 and the amount of rudder correction corresponding to a given course deviation is adjustable by potentiometers 33, 331 in the bridge circuit. A generator 15 coupled to the transmitter 5 produces a component dependent on rate of change of course which is applied to the magnetic amplifier. The magnitude of this component is adjustable by rheostat 41. Slight adjustments of course to be maintained by the auto pilot may be effected by knob 87 adjusting repeater motor 7. For larger course adjustments lever 47 is temporarily moved to the " large course adjustment " position thereby de-energizing relay 75 and disconnecting repeater motor 7 from transmitter 5. It is then possible, owing to deenergization of repeater motor 7, to move lever 47 about a vertical axis 65 to operate potentiometer 13 manually. If lever 47 is moved to the " hand electric " position shown, relay 75 is de-energized to disconnect repeater motor 7 and permit manual control of steering motor 27 by movement of lever 47 about axis 65, and relay 77 is de-energized so that a rheostat 45 is substituted for rheostat 43 as sensitivity control, rheostats 33, 33<SP>1</SP> are shorted out, and feedback from generator 15 is disconnected. The mechanical arrangement of lever 47 is such that its movement between the " hand electric " and " auto pilot " positions is only possible if it is first centralized with respect to vertical axis 65. To prevent sudden change of course, closing of a main supply switch 97 is not effective to energize the apparatus until lever 47 is centralized to close a switch 97 and energize a self-holding relay 99. The construction of a steering stand incorporating lever 47, repeater motor 7, potentiometer 13, switches 70, 73, 97 relays 75, 77 and knob 87 is described. Specifications 154,618, [Class 38 (iv)], 669,696 and 727,673 are referred to.