baber/WOPTO huggingface dataset:
Patent GB-884560-A (GB)
Title: An improved means for forging bell or like ends on metal rod or tube members
Inventor: BURNELL IVOR HENRY
IPC: B21K1/76
Filed: 1958-09-22
Abstract: 884,560. Forging. ENGLISH STEEL CORPORATION Ltd. July 2, 1959 [Sept. 22, 1958], No. 30204/58. Class 83 (4). A bell or like hollow end is formed on a workpiece 3 by clamping it in a two-part die 2 with its end surrounded by a die cavity 4 and then upsetting the end to the shape of the cavity by a tool 6 having an intermediate collar 6a which abuts the face of the die 2 at the end of the working stroke. Workpiece 3 may be solid or tubular and is clamped in a two-part die 2 mounted in a housing 1, la. Tool 6 has a nose 6b for piercing solid workpieces and is mounted in a two-part housing 5, 5a. The upsetting may be performed in a crankshaft forging press of the kind described in Specification 757,526 but with the centre tool removed. The invention is used in the manufacture of pipe moulds.
Patent GB-1098858-A (GB)
Title: Circuit for producing direct current pulses through a load
Inventor: GURWICZ DAVID
IPC: H03K3/352
Filed: 1965-07-16
Abstract: 1,098,858. S.C.R. switching circuits. SEV. CON ENGINEERING Ltd. July 27, 1966 [July 16, 1965], No. 30292/65. Heading H3T. [Also in Division H2] A silicon controlled rectifier feeding a load is associated with two further S.C.R's. respectively for charging and discharging a commutating capacitor for the first mentioned S.C.R. and further capacitors are provided for commutating the further S.C.R's. When an ON pulse is received the inductive load L is energized through SCR1 and the commutating capacitor C1 is charged through SCR3 and SCR1. When an OFF pulse is received SCR2 is fired and extinguishes SCR1. In addition, SCR3 which has meanwhile been maintained conducting by the leakage current of the capacitor is extinguished by the action of capacitors C2 and C3. The power in the load may be varied by varying the duty cycle or the frequency of the conduction of SCR1.
Patent GB-1136988-A (GB)
Title: Improvements relating to cathode ray tubes and screens therefor
IPC: H01J29/14
Filed: 1966-07-06
Abstract: 1,136,988. Cathode-ray display tubes. INTERNATIONAL BUSINESS MACHINES CORP. 6 July, 1966 [6 July, 1965], No. 30293/66. Heading H1D. In a screen for an electron beam display device comprising a layer 36 of a single active material adhering to a substrate layer 34 and provided with means 38 for removing free electrons, flaking of the layer 36 due to heat is minimized by providing in the layer a predetermined pattern of discontinuities 42 extending substantially over the whole layer and being sufficiently fine to be normally visually unobservable. A dark trace screen is manufactured by the vapour deposition in vacuo through a 200-400 line/inch wire mesh of a layer 36 of KCl on to a mica substrate 34. A covering layer 38 of A1 is then provided.
Patent GB-1338884-A (GB)
Title: Containers for packaging
IPC: B29C48/08
Filed: 1972-06-28
Abstract: 1338884 Extruding sheets; oriented plastics laminates TETRA PAK DEVELOPPEMENT SA 28 June 1972 [8 July 1971] 30314/72 Headings B5A and B5N [Also in Division B8] A material which may comprise an extruded polystyrene foam web 30 having a layer of homogenous polystyrene film 32, or a layer of polyethylene or polypropylene has the layer molecularly orientated to facilitate tearing open a packet made therefrom. The orientation is accomplished by extruding the layer 32 on to the previously extruded web 30 and moving the web at a speed appreciably faster than the layer is extruded from the extruder 31. The material subsequently passes through cooled press rolls 28, 29. The web may be from 25 to 1À5 mm. in thickness and the layer between 0À02 and 0À2 mm. The other surface of the web may have a plastics layer coated thereon to enhance its appearance.
Patent GB-629748-A (GB)
Title: Improvements in contact arrangements for air-break electric switches
IPC: H01H1/50
Filed: 1947-11-15
Abstract: 629,748. Air-break switches; switch contacts. PAROLLE ELECTRICAL PLANT CO., Ltd., and ANDERSON, E. Nov. 15, 1947, No. 30359. [Class 38(v)] An air-break isolating switch has a moving rocking contact member which cooperates with a dihedral member forming the stationary contact. The moving contact head 6 of the isolator is mounted on an insulator 5 forming part of a pivoted switch arm indicated at 3. Projecting from an opening in the contact head 6, is the rocking contact 7 which has a recess 7a engaging the end of a cantilever leaf spring 8, and abutments 7b, 7c engaging corresponding abutments 6a, 6b in the contact head when the switch is open. To close the switch.the arm 3 is swung downwards towards the dihedral contact member 2 and the end of the contact 7 at first engages the lower limb of the contact 2 as shown in Fig. 3. Further movement of the arm 3 causes the contact 7 to pivot about an axis formed between the abutments 7b, 6b, and the end of the contact 7 slides up the lower limb of the fixed contact 2 until it abuts the upper limb. When the switch is completely closed, Fig. 5, the lower end of the contact 7 is supported on the spring 8 only, the spring 8 being fully stressed. The movement of the contact arm 3 may be sufficient to carry the pivoting axis y of the contact 7 beyond the line x connecting the point of contact between the fixed and moving contacts and the pivoting axis of the arm 3, so that an overset toggle is formed which automatically holds the switch closed. Each limb of the contact 2 may be bifurcated. It is stated that the construction permits the use of a strong spring giving high contact pressure facilitating the shattering of ice formation.
Patent GB-1294494-A (GB)
Title: Lamp with spring biased contact
Inventor: DUPREE JAMES N
IPC: H01R33/46
Filed: 1970-06-23
Abstract: 1294494 Lampcaps and holders DUPREE Inc 23 June 1970 30426/70 Heading H2E A lamp comprises a glass or plastics bulb 10 secured by cement 24 in a metal shell 20 containing a plastics sleeve 22. A fixed member 26 in the sleeve 22 has one of the bulb terminals 34 soldered in a bore 27 therein, the other bulb terminal 28 being soldered to the metal shell 20 at 32. The member 26 is electrically and mechanically connected to a plunger 46 forming the central lamp contact by a spring 52. Bayonet pins 84 formed on the shell 20 fit in bayonet slots in the corresponding socket which has a metal shell 70 forming the outer contact, the shell being soldered at 80 to a contact plate 76 on the face of a panel 14 in which the socket is mounted. The central socket contact is a member 72 insulated from the shell 70 by an insulator 74, a bore 82 being provided for receiving a conductor. A throwaway filter or lens cap may be used to shield the bulb 16, this being attached to the lamp housing.
Patent GB-1420587-A (GB)
Title: Sliding -bolt fastening device for hinged side panels and  tailboards of utility fehicles
IPC: B62D33/037
Filed: 1974-07-09
Abstract: 1420587 Bolts F HESTERBERG & SOHNE 9 July 1974 [13 Dec 1973] 30432/74 Heading E2A A fastening device for a hinged side panel or tailboard of a vehicle comprises a fitting 3 having a channel for a bolt 4, a bolt operating 'handle which in use is manually pulled away from the panel or tailboard the sliding bolt being pivotably connected by a pivot pin 6 to a forward arm 5 of a toggle device, the pin guiding the bolt between side walls of the channel of the fitting 3 and limiting its movement, a rear end of a rear toggle arm 8 being pivotably connected to a rear end of the trough fitting 3, the arm 8 forming the operating handle. End portions of the pivot pin 6 extend into a slot 7 in each side wall of the fitting 3 to limit the movement of the bolt. A covered recess 11 in the bolt houses a helical spring 12 compressed between a projection 13 on a base of the fitting and a rear end of the recess to retain the bolt projected or withdrawn. A spring 15 projecting from the toggle arm 5 snap engages a projection 16 on the rear end of the bolt additionally to retain it projected. The forward end of the channel may have the form of a T shaped slot when loads on the bolt are high. Pressure on the toggle arms above a central pivot pin 9 projects the bolt. The fitting 3 may be secured to an upper corner of a bottom hinged side panel or to a tailboard of a vehicle.
Patent GB-472014-A (GB)
Title: Improvements in means for producing helical flow of gases, in the smoke tubes of steam boilers
IPC: F23M9/00
Filed: 1936-11-09
Abstract: 472,014. Tube scrapers. CLARKE, CHAPMAN, & CO., Ltd., WOODESON, W. A., and KUHLMANN, A. Nov. 9, 1936, No. 30481. [Class 99 (ii)] [Also in Group XII] Smoke-tube baffles consist of a short helical member 2 from which extends a rod 4 centrally arranged within the tube 1 and terminating at the smoke box end in bent portions 6, 7, 8 adapted to engage with the tube end and smoke box door to prevent longitudinal movement of the baffle and to prevent the member 2 being blown into the smoke box during cleaning operations. The member 2 also terminates in a tray or scraper 9 for collecting and removing soot. Specification 390,347 is referred to.
Patent GB-1263537-A (GB)
Title: Method and apparatus for monitoring a gaseous atmosphere for radioactive isotopes of iodine present as organic iodine compounds
IPC: G21F9/02
Filed: 1969-06-17
Abstract: 1,263,537. Monitoring air for radioiodine. ATOMIC ENERGY OF CANADA Ltd. 17 June, 1969 [19 Aug., 1968], No. 30593/69. Heading B1L. Air in the region of a nuclear reactor is monitored for the presence of radioiodine present in the form of organic iodine compounds by taking a sidestream of the air sample flowing in line 14, causing the sidestream to entrain a proportion of fluorine, chlorine, or (as shown) bromine vapour by passage over liquid bromine in vessel 1, recombining the two streams and passing the recombined stream through charcoal loaded filter paper 2 previously impregnated with the same halogen as that entrained. The radioiodine is displaced from the organic iodine compound by the entrained halogen, and is then adsorbed by the charcoal in filter paper 2. The radioactive iodine so trapped is continuously monitored by scintillation counter 3. Excess halogen passing through filter 2 is removed by steel wool filter 39, or activated charcoal filter 40.
Patent GB-1234935-A (GB)
Title: Piperazine derivatives
Inventor: CREIGHTON ANDREW MALCOLM
IPC: C07D241/08
Filed: 1967-07-03
Abstract: 1,234,935. Piperazine derivatives. NATIONAL RESEARCH DEVELOPMENT CORP. 2 Oct., 1968 [3 July, 1967], No. 30617/67. Heading C2C. [Also in Division A5] Compounds I (including optical isomers and salts thereof), some of which are novel, wherein R 1  and R 2  signify H or Me, or together constitute an ethylene bridging group, subject to the proviso that where R 1  and R 2  are both Me, the Me groups are in the meso relationship, are obtained: (a) by the interaction of the appropriate tetra-acetic acid and formamide, or (b) by cyclizing the appropriate N,N,N<SP>1</SP>,N<SP>1</SP>- tetracarbamoylmethyl - 1,2 - diamino - alkane utilizing polyphosphoric acid or phenol. The compounds I have activity in relation to certain forms of cancer. meso - 2,3 - Diaminobutane tetra-acetic acid dihydrate and trans - 1,2 - diaminocyclobutane tetra-acetic acid monohydrate are prepared similarly to the procedure of Dwyer and Garvan J. Amer. Chem. Soc., 1959, 81, 2956. N,N,N<SP>1</SP>N<SP>1</SP> - Tetracarbamoylmethyl - 1,2 - diaminopropane is prepared similarly to the procedure of Badinard et al., Bull. Soc. Chim., 1960, 382. meso - 2,3 - Diaminobutane is prepared by lithium aluminium hydride reduction of the dibenzyl ether of dimethyl glyoxime and is isolated as the dihydrochloride.
Patent GB-855439-A (GB)
Title: Improvements in or relating to pneumatic conveying apparatus for granular or pulverulent material
IPC: B65G53/66
Filed: 1958-09-25
Abstract: 855,439. Pneumatic conveyers. MARTIN, J. J. Sept. 25, 1958 [Sept. 27, 1957], No. 30626/58. Class 78 (1). The lower end of the feeding hopper 3 opens into the conveying conduit 1 at a point where the cross-sectional area is reduced and where a pivoted flap valve 2, serving for the guidance of the conveying air, is situated. The flap can be rotated about an axis 4 by turning a nut 7 situated outside the conduit. A part of the conveying air passes through a restricted aperture H and exerts a loosening action on the material as well as a cleaning action on the upper side of the valve 2. The material may be broken up by swinging a hook 5 from position 5a to position 5b. The hook is mounted on a rod 10 which is movable longitudinally and rotatably from outside the conveyer. The hook lies in a laterally-arranged recess 9 when not in use.
Patent GB-789255-A (GB)
Title: An adjustable reclining chair
IPC: A47C1/0355
Filed: 1955-10-26
Abstract: 789,255. Adjustable chairs. LORENZ, A. Oct. 26, 1955 [Nov. 8, 1954], No. 30668/55. Addition to 789,138. Class 52(2) The mechanism for actuating the headrest of the parent Specification includes a double - arm lever pivoted directly to the frame of the chair and having its arms connected respectively to the head-rest and the back rest. As shown in Fig. 2, the back rest 24 is pivoted to the frame 20 at 30 and a double-arm lever 40 is pivoted to the frame at 41. One arm of the lever is connected by a pivoted link 42 to a downward extension 52 of the back rest and the other arm is connected directly to the rod 36 actuating the head-rest 34. As the back rest is pivoted rearwardly, the extension 52 swings the lever 40 anticlockwise so that the head-rest is extended to the position shown. Alternatively link 42 can connect one arm of lever 40 to the control lever 50 by which movement of the back rest actuates the leg rest 46 and the seat 28. As shown in Fig. 8, the back rest 326 and seat 328 form an integral unit pivoted at 330 to the frame 320 and movement of this unit actuates the leg rest 346 through a link 353, a ball crank 350 pivoted to the frame at 349 and a control lever 351. A link 342 connects the lever 351 to one arm of the double arm lever 340 actuating the head rest 334. As shown in Fig. 10, the seat and back unit is pivoted to the frame at 430 and bears on an abutment 452 of a bell-crank 450 to move it and so actuate the leg rest 446, one arm of the doublearm lever 440 for actuating head-rest 434 being pivoted to one arm 453 of the bellcrank. As shown in Fig. 11, the back and seat unit, when tilted back, bears on end 552 of lever 550 to swing it counter clockwise about its pivot 549. An arm 553 rigid with lever 550 moves double-arm lever 540 through a link 542 to extend the headrest 534.
Patent GB-1064646-A (GB)
Title: Improvements in or relating to electromechanical transducers
IPC: G01H1/00
Filed: 1964-08-04
Abstract: 1,064,646. Semi-conductor pressure transducers. SIEMENS & HALSKE A.G. Aug. 4, 1964 [July 23, 1963], No. 30698/64. Heading H1K. [Also in Divisions G1 and H4] A semi-conductor electromechanical transducer consists of a junction transistor having a pressure-transmitting needle bearing on the emitter electrode or emitter zone of the transistor whose design is such that the current density in the vicinity of the needle is greater than that in any adjacent surface region. The embodiment shown in Fig. 3 is an oxide-protected NPN silicon planar transistor having a drop-shaped emitter zone 13 formed by diffusion into the base zone 12. The aluminium emitter electrode 14 is similar in shape to the emitter region and its pointed end faces a similarly shaped base electrode 15 to provide a region of maximum current density between the electrodes. The needle is so placed that its axis intersects the line between the tips of the electrodes. Placing the point of the needle in a region of highcurrent density compensates for the loss of sensitivity arising from the use of a blunted needle to avoid damage to the semi-conductor surface. The needle is preferably made of sapphire, ruby, or boron carbide, but may possibly be made of the softer molybdenum. The pressure sensitivity of the transistor varies with its collector current. A suitable direct current bias may be applied to the unstressed transistor so that the transistor may be operated in an area of high-pressure sensitivity. To avoid the use of pressures sufficient to give non- elastic deformation of the semi-conductor this means that the transistor should be operated with the lowest standing collector current consistent with a reasonable current gain. To assist in operating the transistor in the chosen area a mechanical bias may be applied to the needle. To obtain high sensitivity the junctions should be very close to the surface of the transistor provided that they are not so close as to be damaged by the needle. This is essential only in the region of the needle and localized etching may be used so that the needle may be placed near the junction. Many uses of the transducer are suggested-an aircraft variometer is described. The Specification gives the relationship between the collector current of a conventional planar transistor with a horseshoe-shaped base electrode and the position of a needle applied at constant pressure to points across the emitter, base, and collector of the transistor.
Patent GB-840735-A (GB)
Title: Improvements in or relating to fluorine-containing polymers
IPC: C08F214/18
Filed: 1956-10-09
Abstract: Ethylenically unsaturated monomers are polymerized in a system comprising water, an oxidant and, as an emulsifier, a compound of the formula X1(CF2-CFCl)nCF2(CH2)mR, in which X1 is fluorine, chlorine or bromine or a perhalomethyl radical containing fluorine, chlorine or bromine, n is an integer of 2 to 9, R is an hydrophilic group and m is 0 or 1 and is O only when R contains a <FORM:0840735/IV(a)/1> group; the resulting latex is then coagulated, and the polymer separated and dried.  Monomers specified are perfluoropropene, tetrafluoroethylene, chlortrifluoroethylene, trifluoroethylene, vinylidene fluoride, vinyl fluoride, difluorodichloroethylene, alphamethyl phenyl difluoroethylene and perfluoroacrylonitrile which may be polymerized alone or in admixture with one another or with other monomers such as vinyl or vinylidene chloride.  The emulsifiers used may be those disclosed in Specifications 784,727 and 795,513. Oxidants specified are potassium persulphate and the other oxidants disclosed in Specification 795,513, which may be used in conjunction with the sodium salts of sulphur containing reducing acids and a small quantity of iron.  The pH of the reaction mixture may be between 3 and 13 and is preferably between 6 and 10.  The polymer latex may be coagulated by freezing and the separated polymer washed first with water and then with an organic solvent.  Reference has been directed by the Comptroller to Specification 795,513.
Patent GB-446511-A (GB)
Title: Improvements in or relating to circular knitting machines
IPC: D04B13/00
Filed: 1934-10-26
Abstract: 446,511. Knitting-machines. BRITISH CELANESE, Ltd., 22, Hanover Square. London, and WINTER, A. S., and JACKSON, T., c/o British Celanese, Ltd., Spondon, near Derby. Oct. 26, 1934, No. 30734. [Class 74 (ii)] A holding-down wheel 9 for pushing the fabric loops down the movable needles of a circular knitting-machine is provided on the rim with projections or ribs 10 which engage between the needles, and is mounted on a sliding member 6, so that on encountering slubs or other obstructions it can slide toward the centre of the needle cylinder against the action of a spring 14, so avoiding damage to the needles 1, or the ribs 10 of the holding- down wheel. A stop 12 working in a slot 11 limits the travel of the sliding member. The wheel may be arranged to pivot towards the centre. The movement of the wheel may be arranged to actuate the stop-mechanism of the machine.
Patent GB-264293-A (GB)
Title: Improvements in or relating to brackets
IPC: A47B96/06
Filed: 1926-09-06
Abstract: 264,293. Rignold, H. R. Sept. 6, 1926. Brackets.-A shelf bracket of the kind in which a pair of lugs 5 slidably embrace an upright support provided with holes selectively engaged by a hooked projection 6 on the bracket is formed of three stampings 1, 3, 4. The stamping 1 is provided with projections 2 which engage apertures in a right angle table member 3 and a plate 4 provided with the embracing lugs 5. The hook 6 is riveted at the foot of the bracket. A set screw to adjust the bracket angularly may be provided in addition to or instead of the hook 6. In the latter case, the tip of the screw may be reduced in diameter to enter one of the holes in the upright support. The lugs 5 are inclined as shown to allow tilting of the bracket.
Patent GB-398670-A (GB)
Title: Combination furniture
IPC: A47C17/32
Filed: 1932-11-01
Abstract: 398,670. Beds. ABRAMS, T., 8903, 97th Street, Woodhaven, New York, U.S.A. Nov. 1, 1932, No. 30767. Convention date, June 16. [Class 52 (ii).] A bed comprises independent self-supported nestable frames, interengageable means on the frames functioning to shift the frames automatically to an unnested relation and manually releasable means for retaining the frames in nested relation. As shown in Figs. 1 and 2, the bed comprises a movable frame A and a fixed frame B provided with interengageable hooks 22, 23. To the legs 19 of the frame B are connected springs 25 fixed to a plate 28 having arms 29 apertured for sliding on wires 39 extending between the front and back of frame B. A bar 31 fixed at 32 to the frame A and provided at 33 with a leg terminates in a hook 38. To the spring-pressed bolt 35, Fig. 3, is attached a cable 41 dividing into branches 42, 43 carrying rings 46. Inward movement of the frame A moves the plate 28 against the tension of springs 25 until the bolt 35 engages the hook 38. Release of the bolt 35 by pulling on the rings 46 allows the springs 25 to move the frame A to unnested position. In a modification the movable frame carries a spring tensioned provided with a ring engaged by a projection on the fixed frame, the frames being held in nested relationship by a spring latch engaging the inner rail of the movable frame and releasable by rotation of a shaft carrying a lever having a pin-and-slot connection with the latch. In a further modification a leaf spring fixed to one frame is compressed when the frames are in nested position. In a still further modification, one frame carries a pair of springs carrying plates projecting into the path of movement of the other frame. In the latter two modifications the latching means may comprise a shaft journalled in one frame and provided with notched latch arms engaging latch elements on the other frame under spring pressure. Rotation of the shaft by operation of foot pedals releases the latches to permit the frames to move to unnested position.
Patent GB-446288-A (GB)
Title: Improvements in or relating to traffic control signals
IPC: G08G1/082
Filed: 1934-10-26
Abstract: 446,288. Road signals for controlling traffic. AUTOMATIC ELECTRIC CO., Ltd., Strowger Works, Liverpool, RENSHAW, A. P. B., Brookwood, Dickerage Road, Kingston Hill, Surrey, and BOTCHERBY, P. B., 157, King Henry's Road, Hampstead, London. Oct. 26, 1934, No. 30826. [Class 118 (ii)] In a traffic control system for an installation at a number of succeeding intersections, the operation of a pad initiates transfer of right of way at more than one of the intersections. As shown, signals at three intersections A, B, C are normally controlled respectively by pads a, b, and c. When pad a is operated relay X energizes and relay D pulls up to control apparatus at intersection A. Relay E is also operated to control apparatus at intersection B. Similarly, when a vehicle operates pad b relays E and F at intersections B and C respectively are energized. In an alternative form relay X operates relay Y and not relay E so that pad a controls signals at all three intersections. The passing forward of the pad operation may be made effective only if the main road has right of way by putting cam contacts in the "passing forward" circuit. Specification 432,114 is referred-to.