baber/WOPTO huggingface dataset:
Patent GB-1485289-A (GB)
Title: Method and apparatus for preventing voltage extremes in an electrolytic cell having automatic adjusting of the anode-cathode spacing
IPC: C25B1/36
Filed: 1974-12-16
Abstract: 1485289 Preventing voltage overload in electrolysis OLIN CORP 16 Dec 1974 [7 Jan 1974] 54285/74 Heading C7B An electrolytic cell, e.g. of the horizontal Hgcathode type, having an automatic anode-cathode spacing adjustment device, is protected from malfunction of the device by measuring the cell voltage and when this reaches a predetermined limit generating a signal which inactivates further automatic adjustment. A voltmeter having adjustable set limits (high and/or low) read by a contactless sensor, e.g. photo-electric, inductive or capacitive, may provide a signal via relays arranged to cut out the adjuster and/or to cut out any motor-driven anode raising/lowering device. An audible alarm coupled with visual indication of the faulty cell may be given. The automatic adjuster may be of the protective or operational (i.e. maintaining optimum working conditions) kind.
Patent GB-1166450-A (GB)
Title: Method and Apparatus for Welding Edging Bars on Grates
IPC: B23K11/00
Filed: 1967-12-01
Abstract: 1,166,450. Welding by fusion. LIGHT GITTER G.m.b.H. 1 Dec., 1967 [3 Dec., 1966], No. 54782/67. Heading B3R. A machine for welding an edge bar to a grating comprises means for locating and holding a grating B and an edge bar 51 in position to be welded and a gas-shielded welding head 49 movable along the edge bar 51 to weld it to the ends of members of the grating. The workbench A of the machine is provided at the welding area with spaced projecting bars 3 having an inverted V-section to enable welding dross to fall. A carrier 6 vertically slidable between rollers 9, 10 journalled in the frame 1 of the machine is raisable by a ram 18 actuating wedges 13, 14 engaging rollers 11, 12 on the carrier 6. An adjustable stop 22 determines the stroke of the ram 18. Cylinders 33 on the carrier 6 serve to move horizontally a stop 4 extending the length of the work-bench A and having slots to accommodate the bars 3. With the carrier 6 and so the stop 4 raised a grating is located against the stop 4 and is pressed flat by plates 35, 36 actuated by rams and adjustable along the work-bench A. After the stop has been moved away from the grating, an edge bar is positioned on lugs 25 pivoted to the work-bench A between the bars 3 and raised by an actuating ram 31. The stop 4 is returned to clamp the edge bar against the grating. The edge bar is welded to the abutting ends of the grating members by traversing a slide 39 carrying the gas shielded arc welding head 49 along the edge of the work-bench A. A feeler 41, mounted adjacent the welding head 49, engages each grating member in turn and stops the slide 39 for a predetermined time to effect each weld. The feeler 41 is raised by a ram 48 on the slide 39 to enable it to pass over each grating member when the individual weld is complete.
Patent GB-1332496-A (GB)
Title: Sewing machines
IPC: D05B29/00
Filed: 1970-11-19
Abstract: 1332496 Sewing machines UNION SPECIAL MACHINE CO 19 Nov 1970 [21 Nov 1969] 54945/70 Heading D1G A sewing machine presser mechanism cooperating with a drop feed mechanism 30 comprises a presser foot sole 60 and a shank 72 connected by link mechanism 65 hinged to the shank and the sole at an angle 'A' so that the sole moves in a work feeding direction and effects a faster feeding movement of that sole than that of the feed dog during the end of the feeding movement of the dog. The linkage 65 comprises a bell crank lever pivoted on a pin 70 which may be selectively positioned (to provide a chosen angle 'A') in arcuate slots 74 in arms 71 extending rearwardly from shank 72. One arm 66 of the lever is pivoted at 64 to the sole 62, the other arm is engaged by a loop 82 of a torsion spring 78 having its remote end 84 in engagement with a sleeve 86 adjustably secured to a sleeve 75 screwed on to a threaded extension of the pin 70. A stop plate 90 is provided on the shank 72. In a modification, (Figs. 10-13, not shown) the linkage comprises a single armed lever (110) engaged by a flat spring (107) the tension of which may be varied by a screw (108). In a further modification (Figs. 14-17, not shown) the linkage again comprises a bell crank lever, (142) the arm remote from the sole being urged upwardly by a compression spring (153). Presser bars, lifting. The presser bar 32, which is urged downwardly by a spring, is provided with an adjustable nut (38, Fig. 2 not shown) which determines the lowest position of the bar. The, presser bar may be lifted by a knee press (not shown) connected to the bar by lever and link mechanism (43-50). Thread cutting. The presser foot of the second embodiment (Fig. 11 not shown) is provided with a thread cutter (97).
Patent GB-1370997-A (GB)
Title: Methods of manufacturing brushes
IPC: B29C65/00
Filed: 1972-11-29
Abstract: 1370997 Brushes; cleaning pads W BLANKSCHEIN 29 Nov 1972 55038/72 Headings A4F and A4K [Also in Division B5] To produce a plurality of brushes each comprising an application head of foam plastics on a handle, a plurality of handles are laid in parallel in contact with a sheet 3 of foam plastics, a second sheet 4 of foam plastics is laid on top of the handles, and the brush heads are stamped simultaneously out of the sheets 3, 4 and welded around the edges to form brushes as in Fig.2. As shown in Fig.9, the handles 13 may be cut without waste from a sheet 10, remaining connected by a "holding portion" 11 to facilitate positioning of the handles in the stamping and welding tool. Alternatively, Fig.7 (not shown), the handles (6) may be injection moulded, Fig.7 (not shown), the sprue (5) providing the "holding portion" in this case. As shown in Fig.11, the handles 15 may be stamped out of a sheet together with a portion 19 which may be wrapped around the finished brushes to form a packing. Figs.12-19 (not shown), show examples of brushes which may be produced by the method.
Patent GB-1277429-A (GB)
Title: Improvements in or relating to static electricity discharger systems
Inventor: BRIGHT ALFRED WILLIAM
IPC: B64D45/02
Filed: 1968-12-03
Abstract: 1277429 Automatic control of static electricity discharge systems DEFENCE SECRETARY OF STATE FOR 1 Dec 1969 [3 Dec 1968 12 Nov 1969] 57433/68 Heading G3R [Also in Division H1] Build up of electrostatic charge on a structure is prevented by a discharge system comprising a transducer supplying a signal indicative of the magnitude and polarity of the electrostatic field gradient at the structure, means to inject electric charges into a stream of vapour-containing gas travelling at or near the speed of sound and means to make the stream expand sufficiently to cause condensation of vapour to form particles or droplets in the stream having greater inertia than ions of nitrogen in the atmosphere, the charge injection means being controlled by the transducer signal to eject charges from the structure into the stream to reduce the electrostatic field gradient. As applied to maintaining the field gradient at the surface of a helicopter 1 within tolerable limits, the transducer comprises a rotating-vane electro-meter 8 producing an A.C. signal of amplitude dependent on the field gradient, this signal being applied to a detector circuit 9 which derives a D.C. signal whose polarity and magnitude are dependent on that of the field gradient which may include a limiting or non-linear (e.g. logarithmic) amplifier, After passage through an amplifier 4, the D.C. signal is used to control charge dispersal apparatus 5 which receives gas from a gas turbine engine 6 and comprises a polytetrafluoroethylene tube 10 formed with a throat 11 and nozzle 12, the throat incorporating an annular metallic electrode 13 co-operating with a needle-like electrode 14 mounted on a support 15. Members 13, 15 receive the output of amplifier 4 so that a corona discharge occurs from the point of needle 14 and the ejected charges are swept away in the gas stream 17, whose condensation is produced by adiabatic cooling occurring in the expansion region beyond the throat 11. The gas flow reaches the speed of sound at the throat 11 and is supersonic between the throat 11 and nozzle 12. Charge carriers in the region of the electrode 14 are entrapped and swept away by the condensed particles due to the low mobilities of the latter. A discussion is given of the disposition of the electrode 14 relative to the throat 11 to maximize the removal of the charges. Mention is also made of increasing the humidity of the gas in the duct 7, or adding further quantities of vapour or particulate additives to it, or adjusting its temperature. Other modifications relate to the provision of automatic gain control for the amplifier 4 responsive to the discharge current sensed by a resistor in the line 19; to variation of the shape and number of the electrode(s) 14; and to duplication of the system to provide selective operation according to the polarity of the discharge required.
Patent GB-1098568-A (GB)
Title: Tufting machine and method for producing terry-like fabric and fabric produced thereby
IPC: D05C15/00
Filed: 1966-12-12
Abstract: 1,098,568. Tufting machines, tufted fabrics. SINGER CO. Dec. 12, 1966 [Dec. 23, 1965], No. 55469/66. Headings D1G and D1K. A tufted fabric is produced by projecting a loop of a first yarn through backing fabric from a first to a second side thereof, projecting a loop of a second yarn through the backing fabric from the first to the second side at a point closely adjacent the point of penetration of the first yarn, the second loop passing through the first loop, collapsing the first loop on to the second loop, maintaining the second loop, advancing the backing fabric to form back stitches of the first and second yarns, the first yarn back stitch preferably forming a loop, and repeating the foregoing sequence. The tufted fabric comprises parallel rows of stitched seams so formed. Backing fabric F is fed to an upwardlyinclined needle plate 70 by a pair of spaced driven let-off rolls (74), and after passing over a bar (85) descends to a pair of spaced feed rolls (86) driven from the rolls (74) at a slightly higher speed. A first inclined needle 39, carrying a first yarn 72, passes to one side of a yarn-supporting finger 95 before penetrating fabric F, and on commencing to rise throws a first loop L2. An oppositely-inclined second needle 25, carrying a second yarn Y1, then passes through fabric F and through the loop L2, thereby retaining the latter when needle 39 ascends. Needle 25 on commencing to rise throws a second loop L1 which is retained by an oscillating looper (100). When needle 25 has withdrawn from fabric F, a take-up acts on yarn Y2 to tighten loop L2 about loop L1. Fabric F is then fed to form back stitches B1 and B2 in yarns Yl and Y2 respectively. Finger 95 is also shifted laterally, whereby needle 39 in its next descent passes on the other side of finger 95 to lay the back stitch B2 thereover. Finger 95 is formed on its upper surface with a hump which serves to expand the looped back stitch B2 when the latter passes off finger 95, thereby further tightening loop L2.
Patent GB-1382119-A (GB)
Title: Hot fluid injection into hydrocarbon reservoirs
IPC: E21B36/00
Filed: 1972-12-01
Abstract: 1382119 Wells &c TEXACO DEVELOPMENT CORP 1 Dec 1972 [28 Feb 1972] 55577/72 Heading E1F In a method of secondary recovery of a hydrocarbon from a subterranean reservoir, fluid e.g. water is injected into a borehole where it contacts a conduit 10 containing hot fluid e.g. steam, the liquid in the borehole becomes heated as it travels down the borehole and is subsequently injected into the reservoir. The flow rates of the fluids are such that the fluid in the annular space 14 of the borehole is heated to a predetermined temperature at substantially the same time as it reaches the depth of the hydrocarbon reservoir, where high injection temperatures are required saturated steam at 300 psi may be injected into the annular space 14 in the borehole and this is superheated at the depth of the reservoir by saturated steam at 600 psi circulating through conduit 10. In an alternative embodiment, Fig. 1 (not shown), the conduit (10) is open at its lower end and the hot fluid mixes with the heated fluid in the borehole before injection into the reservoir. The injection of hot solvents is also referred to.
Patent GB-1192430-A (GB)
Title: A Two-Part Hob
IPC: B23F21/16
Filed: 1967-12-11
Abstract: 1,192,430. Gear-cutting. W. FERD. KLINGELNBERG SOHNE G.m.b.H. 11 Dec., 1967 [25 Feb., 1967], No. 56143/67. Heading B3K. A worm-gear or like hob comprises two body parts joined by an intermediate ring, the teeth of a gear being completely cut by the cutting edges 19, 20 adjacent the gap. As the hob is reduced by sharpening, the ring is reduced in thickness so that the tooth gap at the centre remains the same. The teeth are relieved helically on their front faces when the inter-tooth grooves are helical and are relieved radially on a logarithmic or archimedean spiral. The flank clearance angles may differ and may be up to 8 degrees and the tip clearance angles may be less than 10 degrees. A new hob cuts over-depth in order to permit several resharpenings to take place. For rough-cutting, the ring (16) is selected to cause the edges 21, 22 to take the main cut.
Patent GB-1438649-A (GB)
Title: Heat exchangers
IPC: F22B1/06
Filed: 1972-12-05
Abstract: 1438649 Tubular heat exchangers UNITED KINGDOM ATOMIC ENERGY AUTHORITY 19 Nov 1973 [5 Dec 1972] 56161/72 Heading F4A In a tube-in-shell heat exchanger 1 a bundle of heat exchange tubes 7 is connected with tube plates 2 and 3 at each end of the bundle and disposed within the shell to which the plates are sealingly secured, a first heat exchange fluid (e.g. liquid sodium) being fed from an inlet port 8 through the tubes 7 to an outlet port 9 and a second fluid (e.g. water) being arranged to flow through the shell through inlet and outlet ports 10, 11, respectively. A tube member 14 is closed to liquid sodium flow and has inlet and outlet ports 15, 16, respectively, for water flow.
Patent GB-1148360-A (GB)
Title: Method for preparing hydroxamoyl chlorides
IPC: C07C259/02
Filed: 1967-12-13
Abstract: 1,148,360. Method of preparing hydroxamoyl chlorides. E. I. DU PONT DE NEMOURS & CO. 13 Dec., 1967 [16 Dec., 1966], No. 56713/67. Heading C2C. Hydroxamoyl chlorides of general formula where R is methyl, ethyl or methoxymethyl, are prepared by direct chlorination of an aqueous solution containing 1 to 13% by weight of the corresponding aldoxime at a temperature between 25 and - 15 C.
Patent GB-1495701-A (GB)
Title: Industrial disc brakes
Inventor: STEWART J
IPC: F16D65/18
Filed: 1973-12-07
Abstract: 1495701 Spot-type disc brakes; fluid pressure braking systems TWIFLEX COUPLINGS Ltd and J STEWART 4 Dec 1974 [7 Dec 1973] 56890/73 Headings F2E and F2F A disc brake for a marine or industrial shaft with end float has a pad 5 movable by a first pneumatic piston-and-cylinder actuator into contact with a disc and then a main hydraulic piston-and-cylinder brake actuator is energized to brake the disc. As shown the first actuator is a double-acting pneumatic cylinder 12 with a piston 13 connected by a rod 14 to a coaxial hydraulically operated piston 8 in a cylinder assembly 1 mounted between frame plates 2. In use air pressure is supplied to port 15 to apply the pad to the disc by a 3-position valve 36 and then hydraulic pressure, from a booster 34 which may include a spring for actuating the brake on fluid pressure failure, to port 11 to brake the disc. The delay between the application of pneumatic and hydraulic pressure is produced by pneumatic logic circuitry shown in Fig. 5. Air supplied to port 16 (Fig. 2) retracts the pad. Retracted pad clearance is maintained constant by a washer 17 which is urged to a tilted position on the shaft by a spring 18 to stop the shaft on retraction when the tilted washer abuts an abutment 19.
Patent GB-1314288-A (GB)
Title: Catalyst its preparation and its use in the hydrogenation  of unsaturated hydrocarbons
IPC: B01J37/20
Filed: 1971-12-14
Abstract: 1314288 Hydrogenation catalyst INSTITUT FRANCAISE DU PETROLE DES CARBURANTS ET LUBRIFIANTS 14 Dec 1971 [16 Dec 1970] 58093/71 Heading B1E [Also in Division C5] A process for manufacturing a catalyst comprises (a) impregnating an alumina carrier having a surface area of from 120 to 500 m<SP>2</SP>/g and a porous volume of from 0.2 to 0.9cc/g by means of a solution of a cobalt or nickel salt and drying and calcining the resulting product in the presence of air, (b) incorporating into the final product of step (a) a compound of a Group VIA metal and a nickel or cobalt compound and drying and then calcining the resulting product and (c) treating the final product of step (b) with a gas stream containing hydrogen sulphide. The Group VIA metal may be Mo or W. The calcination in step (a) may be at 700 to 850‹C, and in step (b) may be at 400 to 600‹C; the H 2 S treatment may be at 200 to 500‹C.
Patent GB-1309306-A (GB)
Title: Agricultural harvesting machines
IPC: A01D41/16
Filed: 1970-12-11
Abstract: 1309306 Combine harvesters INTERNATIONAL HARVESTER CO 11 Dec 1970 [12 Dec 1969] 58956/70 Heading A1F In a combine harvester the harvesting platform 20 is pivotally and releasably mounted to the feeder housing 30 at the top and bottom and the attitude of the platform and hence the height of the cutter bar above the ground is adjustable by changing the position of attachment of part of the top mounting. In the embodiment the support bar 42 of the platform is fixed in the required position by its end plates 43 being bolted in holes 46 or 47. Feeder housing 30 pivoted to the main body of the combine is positioned so that on raising the front end 61 by rams 14 the cradles 60 engage under the ends 48 of bar 42. As the platform 20 is raised it pivots about bar 42 until the arcuate surfaces of its abutments 72 meet the co-operating surfaces of abutments 91 on the feeder housing. The abutments are secured together by U-shaped links (74, not shown) encompassing them, the links being retained by wedges passing through their ends. Each end of bar 42 is secured by a plate (81) having holes fitting over the bar and a stub 84 on the feeder housing and fastened by a pin through the stub.
Patent GB-1448727-A (GB)
Title: Methods of and apparatus for the screened reproduction of coloured continuous-tone pictures in single or multicolour printing
IPC: G03F5/00
Filed: 1973-12-20
Abstract: 1448727 Copying by scanning DR ING RUDOLF HELL GmbH 20 Dec 1973 [22 Dec 1972] 59236/73 Heading H4F In a method for the screened reproduction of continuous-tone pictures the printing surface is divided into a plurality of areas each of which is divided into four sub-divisions A, B, C, D, each subdisivision having alloted to it the signal derived from signals produced from a scanned master (5, Fig. 8, not shown) during one quantizing interval; the printing area in each area is formed as a continuous dot up to a tonal value for which the dot area (4% cover, Fig. 1) is equal to the area of the smallest printable point; the area of this dot is increased (7%) as the tonal value increases, and when its area becomes approximately twice that of the smallest printable point a division of the dot takes place within the area into two dot-areas (8%); as the tonal value continues to increase the dots increase in area and subsequently divide (11%, 12%, 15%, 16%); after a predetermined tonal value (16%) further division does not take place and the unoccupied areas are each reduced in area, as the tonal value increases further to the smallest area capable of not being printed, and as the tonal value increases further the number of unoccupied areas is reduced. The signals derived from the scanned master may be used to address a store which contains data for producing the correct printing areas in the respective sub-divisions, the master and printing surface being scanned in columns, so that the sub-divisions are scanned in the order A, C, A, C ... B, D, B, D .... The printing surface is exposed to the light from a cathoderay tube which provides either two-dimensional scanning, or, if the printing surface is mounted on a rotating drum, one-dimensional scaning, the printing areas in each sub-division being formed of a plurality of line scans. The signals derived from the scanned master, in binary form, may alternatively be fed to a matrix (41, Fig. 9, not shown), each "1" bit in the respective signal producing preselected printing areas (Figs. 3, 4, 10, not shown). A row of lamps (55-58, Fig. 9, not shown) may be used to expose the printing surface. A printing surface may be produced for each of three colours (magenta, yellow, cyan).
Patent GB-1485770-A (GB)
Title: Illuminated electric switch
IPC: H01H23/02
Filed: 1974-12-17
Abstract: 1485770 Inductors for switches BONNELLA SWITCHES Ltd 17 Dec 1974 [21 Dec 1973] 59569/73 Heading H1N In an electric switch having an illuminated, substantially opaque, manually operable switch member 18 which is movable in an opening 13 in a housing 12 between different switch positions, the switch member 18 has a light transmitting panel 30 so positioned that it is obscured to different degrees by the housing 12 in different switch positions. In one embodiment, the switch for a motor vehicle includes a plastics rocker 18 which is pivotable about an axis 20 for operating the movable contacts of the switch. The rocker 18 includes a panel 28 having translucent letters or symbols for indicating the function of the switch when a bulb 15 is illuminated, and a transparent or translucent plastics panel 30 which is fully obscured by the housing 12 when the switch is off. In two on positions of the switch, the panel 30 is either half visible (lower dotted line position) or fully visible (upper dotted line position) so as to provide an indication that the switch is on.
Patent GB-1380938-A (GB)
Title: Process for producing citric acid by fermentation
IPC: C12P7/48
Filed: 1971-12-22
Abstract: 1380938 Citric acid HITACHI CHEMICAL CO Ltd 22 Dec 1971 [25 Dec 1970] 59683/71 Heading C2C Citric acid is prepared by cultivating Candida tropicalis (Ferm P. 266, ATCC 20345) and Candida lipolytica (Ferm P269, ATCC 20346, Ferm P 267 or Ferm P 268), in a nutrient medium comprising a carbon source including at least one n-paraffinic hydrocarbon (10-18 C) or a sugar, glycerine, ethanol, acetic acid, butyric acid or animal or vegetable fats or oils, a nitrogen source, inorganic salts and nutrients at pH 1À5 to 3À5 under aerobic conditions. The culture broth is centrifuged and the effluent mixed with calcium carbonate or hydroxide to form calcium citrate from which citric acid is isolated.
Patent GB-1396180-A (GB)
Title: Blister package
IPC: B65D75/32
Filed: 1972-12-29
Abstract: 1396180 Blister packages CIBA-GEIGY AG 29 Dec 1972 [30 Dec 1971] 60177/72 Heading B8C A blister package comprises a double blister consisting of two halves 1a, 1b each with a securing flange 3, 4 and foldable along a common folding edge and a display card 7 provided with an opening 6 into which the double blister fits, the securing flange 3 of the one half of the blister being wider than that 4 of the other half such that in use both flanges of the closed blister rest on the same surface 7a of the card and the wider flange covers the narrower flange and is secured to the card. The surface 7a of the card may be covered with a synthetic resin film.