baber/WOPTO huggingface dataset:
Patent GB-1328450-A (GB)
Title: Apparatus for the vacuum packaging of articles in bags
IPC: B65B43/60
Filed: 1971-04-19
Abstract: 1328450 Vacuum packaging W R GRACE & CO 19 April 1971 [9 Feb 1970] 20818/71 Heading B8C Apparatus for vacuum packaging articles in bags comprises a rotatable carriage 53 having a plurality of vacuum nozzles 20-23 around which the bags are placed by an operator, nozzles then being clamped in slots 63 in the carriage 53 by clamps 47 and transported to a clipping section 13 where a clip is applied to the neck of the bag and the bag is severed above the clip and is allowed to fall on to a conveyer 12. Each nozzle 20-23 comprises an outer tubular body (72) having an opening (74) at its lower end and a rod valve control member (71) mounted for axial movement in the tubular body (72) to open and close the opening (74). The nozzles are each mounted on an arm 61 pivoted to a bracket 60 secured to the carriage 53, the arm 61 being raised in the vicinity of the clipping station 13 by means of a cam follower 66 co-operating with a stationary cam 70 to remove the nozzle from the region of the bag to be clipped. The clamps 47 each comprise a clamping head 55 having an opening 65 for the nozzle and two levers 50, 51 each pivotally mounted at one end on the head 55, lever 51 being pivotally mounted at its other end on the carriage 53 and lever 50 being rigidly mounted at its other end on the bracket 60 so that as the nozzle is moved into the slot 63, the clamp is drawn over the nozzle. The clamp 47 is released in the vicinity of the clipping station 13 by engagement of a projection (76) with a cam wheel (77) depending from the cam 70. The clipper comprises a throat 93 which receives the neck of the bag, this action causing slight backward movement of the clipper actuating an air jet mechanism to supply a U-shaped clip 132 through a feed track 94 and actuating a piston and cylinder device to drive a ram plate 212 towards the bag, causing grooves 136, 137 in pivoted fingers 122, 123 to engage the clip 132 and bend its legs inwardly. The neck of the bag is severed above the clip by a reciprocatable knife blade (151).
Patent GB-779243-A (GB)
Title: Improvements in or relating to dry lubrication methods
Inventor: FAIRWEATHER ALAN
IPC: H01H1/60
Filed: 1952-08-19
Abstract: 779,243. Lubricating. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 19, 1953 [Aug. 19, 1952], No. 20836/52. Class 12 (3). [Also in Groups XXXVII and XXXIX] A method of effecting dry lubrication between a sliding member and another member supported for sliding or relatively sliding engagement therewith, consists in transferring a dry lubricating medium to the mutually engaging surface of one of the members by rubbing action effected between the surface and the medium upon relative sliding movement of the members, the lubricating medium for example, polytetrafluorethylene, being of poor intrinsical electrical conductivity and having a coefficient of friction such that there is formed between the engaging surfaces of the members an electrically thin layer of the dry lubricating medium. In the construction shown in Fig. 1, a wiper switch comprising a wiper brush 4 and contact members 1 arranged between arcuate insulating strips 2, is provided with a wedgeshaped member 7 made of or coated with polytetrafluorethylene. The wiper brush 4 in passing over the contacts picks up the lubricant and deposits a film of it on the contacts. More than one member 7 may be interposed between the contact members. Fig. 2 shows a shaft 8 rotatably mounted in a bearing sleeve 9 and receiving solid lubricant from a block 13 pressed against the shaft by a spring 14. The block may be made of, or coated with, polytetrafluorethylene.
Patent GB-1262117-A (GB)
Title: A process for the production of synthetic rubber mixtures
IPC: C08L101/00
Filed: 1969-04-24
Abstract: 1,262,117. Block copolymer mixtures and preparation. FARBENFABRIKEN BAYER A.G. 24 April, 1969 [14 May, 1968], No. 20893/69. Heading C3P. A synthetic rubber mixture comprises, complementarily, 10 to 90% of two styrene/butadiene block copolymers having respective properties:-(a) molecular weight of 30,000 to 150,000, and 100,000 to 1,000,000, (b) a viscosity in toluene of 0À5 to 2 and 1À5 to 10 dl./g., and (c) a styrene content of 20 to 50% and up to 20%. The mixture may be obtained by simple mixing of the polymers in crumb form or in solution followed by crumb formation. Alternatively, the monomers may be polymerized by an organolithium compound, the product partially deactivated, e.g. with water, and thenfurther monomer(s) added and polymerized. The products may then be coupled, e.g. with SiCl 4  or divinyl benzene.
Patent GB-320899-A (GB)
Title: Improvements in and relating to lubricating oils
Filed: 1928-07-19
Abstract: 320,899. Wells, H. M., and Southcombe, J. E. July 19, 1928. Lubricants for machinery.-A lubricating oil is produced from synthetic hydrocarbons derived from the hydrogenation or destructive hydrogenation of carbonaceous material such as coal, wood, vegetable matter, oils, &c., by addition of orientable substances, namely natural or synthetic, saturated or unsaturated organic acids, preferably containing more than five carbon atoms, for example oleic acid. Alternatively the refining of synthetic hydrocarbons is controlled so as to retain in the oil any organic acids already present, for example by filtration through siliceous earths. Specifications 130,377 and 244,086 are referred to. According to the Provisional Specification oils known under the registered Trade Mark "Voltol" are included in the oils to be treated, and alcohols in the treating materials. Specifications 165,897 and 168,076 also are referred to.
Patent GB-472866-A (GB)
Title: Improvements in or relating to packing cases or crates
IPC: B65D6/16
Filed: 1936-07-29
Abstract: 472,866. Crates. CORBETT, GOODWIN, Ltd., and HALL, M. July 29, 1936, No. 20951. [Class 18] A packing case or crate for pottery and like fragile goods comprises skeleton sides, ends, and base, intermediate horizontal boards a<1>, a<2> extending around the outside, and top and bottom horizontal boards b<2> b3, h<2> extending along the sides on the inside, while top and bottom horizontal boards b<1>, h<1> are arranged on the outside. Battens b<2>, b<3>, h<2> abut against the inner faces of battens c<1> Angle brackets d, i are employed as shown, and may also be employed between battens a<1>, a<2>. The usual top cording may be threaded between battens b2, b3 in slot f, and through the usual holes j, but a separate cover may if desired be provided.
Patent GB-625501-A (GB)
Title: Electrical resistive elements and methods of making them
IPC: H01C7/04
Filed: 1947-08-01
Abstract: 625,501. Non-metal resistances; couplings. WESTERN ELECTRIC CO., Inc. Aug. 1, 1947, No. 20988. Convention date, Sept. 19, 1942. [Classes 37 and 38 (i)] In producing heat-treated mixtures of manganese and copper oxides as resistance elements the rate of cooling determines the specific resistivity of the finished product. The invention is particularly applicable in the manufacture of thermistor elements, Figs. 1, 2 and 3, which require a low resistivity and high resistance temperature coefficient. The rate of cooling is chosen according to the atomic ratio of copper to manganese and is slow for elements high in copper and rapid for elements in which manganese is predominant. The sintering temperature is preferably within the range 600‹ to 1450‹ C. and is high for manganese rich mixtures and low for copper rich mixtures; 1000‹ C. is chosen for mixtures in which there are approximately equal atomic proportions of each metal. The Specification includes mathematical and graphical analysis, Figs. 4 to 7 (not shown), to show that resistors according to the invention possess a high temperature dependent factor for a required value of resistivity at 0‹ C. and a satisfactory "figure of merit " b for example with b= - 3.0. The derivation of this term is given in the analysis. In Fig. 3, the rod-shaped element 30 may have caps 31 as electrodes, friction held or secured by conductive cement. In Figs. 1 and 2, a paste containing silver or silver compound, a fusible glass and an organic substance is spread over the surface of the elements 10, 20 and the organic substance removed by drying. The elements are then baked at, for example, 475‹ C., to fuse the glass and bind the silver to form adherent electrodes 11, 22.
Patent GB-896952-A (GB)
Title: Improvements in and relating to measuring instruments
IPC: G01N9/18
Filed: 1959-06-19
Abstract: 896,952. Magnetic couplings. POTTER, D. M. June 19, 1959, No. 21169/59. Class 35. [Also in Groups XIX, XX and XXXVIII] An instrument comprises a pivoted senser 40 which assumes an angular position which is a function of a property or condition to be measured, and is provided with a radiallydisposed soft iron polepiece 52 of high permeability, a shaft 82, carrying a radiallydisposed armature 86, axially-aligned with the axis of sensor 40, and a coil 62 surrounding the shaft and energized intermittently to provide bursts of flux which draw the shaft 82 step-bystep into coincidence with the sensor. The coil 62 may be connected with a half-wave rectifier of 60 c/s. current, and the arrangement may be applied to an aneroid barometer. As shown applied to a meter for measuring the specific gravity of a liquid flowing through chamber 16 from inlet 15 to outlet 23, a float 40 assumes an angular position which is a function of the specific gravity. A permanent magnet 50 on the float 40 provides a loose magnetic coupling and the coil 62 a strong magnetic coupling between the float 40 and shaft 82 so that the arm 84 of a potentiometer 68 moves in correspondence with the float 40. The casing 66 of the potentiometer 68 is carried by a sleeve 58 rotatably mounted by ball-bearings 63, 64, the casing 66 being adjustably secured by screws 79 to a pendulum 72. The potentiometer winding may form two arms of a D.C. Wheatstone bridge circuit, a voltmeter across the circuit being graduated directly in terms of specific gravity. In a modification, Fig. 5, a device S provides a D.C. voltage proportional to the volumetric rate of flow of a liquid and this is balanced against a reference voltage from source 138. Any unbalance causes direct current to flow between slide 156 and point 152 and this is converted by a vibratory reed 160, polarizing winding 162, energized by 60 c/s. current and transformer 168 into an alternating current which is fed through amplifiers 170, 172 to a motor 178. A mechanical drive 180 connected to motor 178 positions slide 156 to rebalance the potentiometer 148 and actuate the indicator 182 which is calibrated directly in liquid flow in pounds per hour. The arm 84 of a potentiometer is positioned by an instrument as in Fig. 2 to provide a specific gravity correction automatically.
Patent GB-603246-A (GB)
Title: An improved spool-changing mechanism for looms
IPC: D03D45/20
Filed: 1945-11-20
Abstract: 603,246. Automatic bobbin changing in looms. BARRERA, J. M. Aug. 20, 1945, No. 21230. Convention date, Aug. 19, 1944. [Class 142(iii)] When weft replenishment is initiated, a spool is deposited on top of the shuttle whilst the slay is at rear centre and is gradually pressed into the shuttle (by a hammer pivoted on the slay) as the slay moves forward. During normal weaving, a pin 27 on the slay passes ineffectively through a hole 26<SP>11</SP> in a lever 23, but when a feeler at the other end of the loom detects substantial weft exhaustion, a member 26 is swung to mask the hole. On the forward stroke of the slay, a shaft 20 is turned by the'levers 23, 29, 31 to the position shown, where it is retained by the lever 29 snapping into a notch 32; the movement of the shaft brings a rod 38 into the path of a lug 60 on a transfer hammer 53. so that on the ensuing rearward stroke of the slay the rod rocks the feeder 55 of a magazine 14, whereupon a spool 15 drops on to the shuttle. Meanwhile, a member 42 (loose on the shaft 20) which, during the rearward stroke of the slay was held down against a spring 43 by the lug 60, rises to the position shown; on the succeeding forward stroke of the slay, the lug 60 encounters a roller 41 whereby the hammer 53 is turned to press the spool 15 into the shuttle, the empty spool being ejected through the bottom of the shuttle box. As the slay nears front centre, the lug 60 rides under the roller 41 and, in doing so, lifts the member 42, thereby turning the shaft 20 slightly and releasing the notch 32 from the lever 29, whereupon the shaft resumes its normal position under the influence of a spring 34. Positioning shuttle: As the slay moves forwardly on the transfer stroke, the upper end of a lever 68 rides against the divergent edge of a plate 35 fixed on the shaft 20, so that its lower end pushes the shuttle 61 fully into the shuttle box.
Patent GB-1396782-A (GB)
Title: Production of thin films
IPC: D06G1/00
Filed: 1972-05-08
Abstract: 1396782 Thin polymer films YARSLEY RESEARCH LABORATORIES Ltd 4 May 1973 [8 May 1972] 21365/72 Heading B5B A continuous support web 17 used in the preparation of thin polymer films is cleaned by passage between at least one pair of dry wipes 15, 16, one wiper of the pair bearing against one surface of the support web and the other wiper bearing against the other surface, the wipers being formed of a non-dusting, non-linting flexible polyurethane foam, suitably of nominal density 2 lbs./cu. ft. at a rate of at least 15 feet per minute, preferably at least 20 feet per min. As shown the wiper is in the form of a strip, a free edge of which bears against the support web, and the portion of each wiper adjacent the support web makes an acute angle, e.g. 30 degrees, with the support web pointing in the direction of travel of the support web, and each pair of wipers is clamped in a metal frame which is earthed. Four pairs of wipers, 20, 21, 23 and 26 may be used as shown. In this way dust may be completely removed from the support web, and the production of pin-hole free films of 0À5 to 6 microns thick by subsequent solution casting of cellulose esters and ethers, polystyrene, polyurethane, polysulphones and polycarbonates is ensured.
Patent GB-696121-A (GB)
Title: Improvements in or relating to television and like receivers
Inventor: BEDFORD LESLIE HERBERT
IPC: H04N5/18
Filed: 1948-08-13
Abstract: 696,121. Television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 29, 1949 [Aug. 13, 1948], No. 21483/48. Class 40 (iii). The D.C. restoration circuit in a television receiver is rendered inoperative during the occurrence of synchronizing signals, so that the " black " level of the signals coincides with the " cut-off" " point of the picture reproducing cathode-ray tube for all settings of the receiver gain control, by applying to the said circuit pulses coincident with the synchronizing pulses derived from the part of the signal circuit between the last amplifier and the cathode-ray tube. As shown, negatively-going synchronizing pulses, separated from the composite signal at the anode of the last video amplifier V by means of a diode D<SP>3</SP>, are applied to the anode of the D.C.-restoring diode D<SP>2</SP> to render it non- conducting during the synchronizing periods so that the circuit comprising the elements C<SP>1</SP>, D<SP>2</SP> and R<SP>4</SP> operates to restore the " black " level at the control grid CG of the picture reproducing tube with reference to " back porch " or black level, which occurs for a very short period after the termination of a synchronizing pulse, and not with reference to the peaks of the synchronizing pulses. Diode D<SP>1</SP> biased by means of resistance R<SP>3</SP> operates as a peak " white " limiter.
Patent GB-1027057-A (GB)
Title: Improvements in and relating to the manufacture of rigid polyurethane foams
IPC: C08G18/38
Filed: 1964-05-25
Abstract: A process for the production of a rigid polyurethane foam free from burnout comprises reacting together a polyol and an organic polyisocyanate in the presence of a blowing agent and of an organic phosphorus-containing compound, the proportions and nature of the polyol, polyisocyanate and blowing agent and the conditions of the reaction being such that, in the absence of the phosphorus-containing compound, burnout would occur, and the amount of phosphorus-containing compound being sufficient to prevent burnout but insufficient to confer self-extinguishing properties on the resulting rigid foam.  The phosphorus-containing compound can contain hydroxyl groups which react with the polyisocyanate.  Suitable non-reactive phosphorus-containing compounds are triethyl phosphate, tripropyl phosphate and dimethyl ethyl phosphate.  Generally, the phosphorus-containing compound is used in a quantity of from 1.25 to 3% by weight of the combined weight of polyol and organic polyisocyanate. Polyisocyanates and polyols are those generally used in polyurethane foam formation.
Patent GB-1492227-A (GB)
Title: Mooring system for use in deep waters
IPC: B66D1/00
Filed: 1975-05-20
Abstract: 1492227 Mooring lines OCEAN DRILLING & EXPLORATION CO 20 May 1975 [31 May 1974] 21586/75 Heading B7S A mooring system comprises a leading chain 18 connected to a cable 16, a wildcat 28 for paying out the chain, a drum 22 for paying out the cable, and drive means 40 for driving the wildcat drum together or independently. In operation, a mooring device, e.g. an anchor, is connected to the chain 18 which is payed out by the wildcat until the chain is fully payed out, whereupon the drum 22 continues the paying out with the wildcat acting as a fairlead sheave. A locker 26 is disposed below the drum 22, and a sheave 36 ensures that during winding in the cable pulls the chain until the chain is moved into the locker by its own weight. A fairlead 32 is disposed on the outside of the locker housing. The sheave 36 can be disposed within the locker 26 or below it.
Patent GB-1311741-A (GB)
Title: Paper feed arrangement
IPC: G03G15/00
Filed: 1970-05-05
Abstract: 1311741 Feeding sheets SCM CORP 5 May 1970 [5 May 1969(2)] 21639/70 Heading B8R A paper feed tray 47, e.g. in a duplicating machine 11, comprises a floor 45 for supporting a stack 21 of sheets, a member being provided to lift a portion of the stack to an operative position, e.g. against corner abutments 109, 111 vertically spaced above the floor 45, from which the sheets may be advanced, e.g. by rollers 23, 25. The member may be a plate 77 pivotally mounted on said floor 45 for supporting the portions of the stack above the corner abutments 109, 111 and rollers 23, 25 which cause each sheet in turn to buckle against the abutments 109, 111 and then flip over the abutments to be fed via a guideway 29 to rollers 31, 33. The tray 47 may be located by a rectangular guide member 57 and by abutments (209), (211), (215), Fig. 9 (not shown), in position on a shelf 53 which slides laterally on rails 67, 69 into the duplicating machine 11 through a loading hatch 17 covered by a door 19. The shelf may have vinyl plastics bearings 75. The plate 77 is pivoted upwardly about its pivot 81 to urge the stack against the corner abutments 109, 111 and rollers 23, 25, by two fingers 93, (95) which pass through apertures in the shelf 53 and tray floor 45 and which are secured on an arm 79 rotatable in an arm 89 which is biased upwardly by a torsion spring (105). This arm 89, which. may have a nylon sleeve, passes through a cam plate (119), Fig. 3 (not shown), connected via arm (121) to the door 19 and having a cam surface (129) such that the arm 89 is forced downwardly when the door is opened causing the plate to lower. The shelf 53 is urged towards the hatch 17 by a spring (153), Fig. 5 (not shown), but is held in position in the machine by a latch (155). This latch is disengaged by opening the door 19 further, causing a stud 177 on arm (165) to move over flange (167) depressing momentarilly the lever (163) and, thereby, the latch (155), allowing the shelf 53 and tray 47 to be ejected through the latch 17 by spring (153) for replenishment. The tray may be of plastics or aluminium and the floor 47 may have frictional cork pads (117]. A smaller tray may be located on the shelf 53 by an alternative abutment (217).
Patent GB-1471792-A (GB)
Title: Identification and location of defective fuel rods of a watercooled nuclear reactor
IPC: H02J7/34
Filed: 1975-05-20
Abstract: 1471792 Location of defective fuel rods BABCOCK BROWN BOVERI REACTOR GmbH 20 May 1975 [20 May 1974] 21662/75 Heading G6C A method of locating defective fuel rods in a fuel element of a water-cooled nuclear reactor, without removing the fuel rods from the fuel element, is characterized in that after insertion of the fuel element 5 into a test container 3 mounted within a water tank 1, the upper end piece of the fuel element 5 is removed, a cover member 7 is lowered to enclose the upper end of the test container 3, the water present in the cover member 7 is expelled by a stream of pressurized gas from sockets 9 and is held at a level N, the water contained in the test container 3 is heated to 100 C., the ends 4 of the fuel rods projecting above the level N are cooled by the gas stream so as to effect condensation of water vapour present in the ends of defective fuel rods, the latent heat of vaporization being given up inter alia to the end faces of the defective fuel rods, and the higher temperatures of the defective fuel rods are detected by a measuring instrument 15. The water in the test container 3 is heated by the after-heat of the fuel rods and is maintained at a temperature of 100 C. by means of heating or cooling devices 11. The level N of the water should preferably lie above the upper ends of the columns of fuel pellets within the fuel rods. The measuring device 15, responsive for example to infra-red radiation, is fixed in a gas-tight manner in the upper portion of the cover member 7 and transmits signals corresponding to the temperatures of the ends of the fuel rods through a connecting cable 16 to a monitoring unit 17. In modifications (Figs. 3 and 4, not shown), specially shaped cover members are provided with mirrors to deflect infra-red radiation away from the straight line path of γ-radiation from the fission products in the fuel rods, thus facilitating infra-red temperature measurement. In Fig. 4 (not shown), the temperature measuring device 15 is located below the water level and is protected from the γ-radiation by a screening element.