baber/WOPTO huggingface dataset:
Patent GB-1186097-A (GB)
Title: Electronic Timer Circuit
IPC: H03K17/28
Filed: 1967-08-17
Abstract: 1,186,097. Timing circuits. E. W. BLISS CO. 17 Aug., 1967 [20 Sept., 1966], No. 37829/67. Heading H3T. A timing circuit comprises a first circuit for providing a reference voltage, a second circuit for producing a linearly time-varying voltage across a capacitance, means for initiating discharge of the capacitance, an output circuit for developing a signal when the outputs of the first and second circuits are equal, and means for visually displaying the elapsed and remaining times of the timing period. In Fig. 1, when switch C is closed capacitor 16 is charged up to the supply potential less the base-emitter drop in transistor 10, since transistor 14 is cut off. If C is now opened, increased conduction of transistor 12 causes 14 to conduct and raise the potential of the right-hand side of capacitor 16. This change is passed through the capacitor to lift the base potential of transistor 10 above the supply potential and cut off all three transistors. Capacitor 16 now discharges through resistors 18, 28, 24 until transistor 10 can conduct again and turn on the other two. This cycle is repeated until transistor 14 goes into saturation and the ramp voltage across resistor 18 has reached its maximum. A differential amplifier 60, 62 continually compares the voltage at point X with that set by the slider of potentiometer 88 and when the former becomes greater transistor 62 is cut off and 60 conducts to turn on transistor 90 and supply the load L. The latter may be energized by transistor 62 cutting off instead of 60 turning on. A microammeter E continually measures the difference between the inputs of the differential amplifier and hence shows how much time will elapse before the load is energized. Resistor 24 is chosen so that the voltage across it is large compared with the base emitter drop in transistor 10, thus compensating for temperature changes in 10 and 16. Resistor 26 sets the maximum timing available. Capacitors 36, 54 prevent self-oscillation. The reference potentiometer 88 may be replaced by another ramp-voltage generator to give a waveform moving in the opposite direction to that of circuit B (Fig. 2, not shown). The swtich C may be a relay or a transistor.
Patent GB-1009926-A (GB)
Title: Sealed semiconductor device
IPC: H01L23/10
Filed: 1963-09-26
Abstract: 1,009,926. Semi-conductor devices. WESTINGHOUSE ELECTRIC CORPORATION. Sept. 26, 1963 [Oct. 23, 1962], No. 37883/63. Heading H1K. A sealed semi-conductor device comprises a support, member having a flat supporting surface, a cylindrical member joined to the supporting member, a stack including a semiconductor wafer and springs disposed within the cylindrical member, and a member which screws into a thread at the top of the cylindrical member and compresses the springs to press the semi-conductor wafer against the supporting surface. This device is a modification of that disclosed in Specification 992,472. As shown, a conductive support member 12 comprises a support portion 14 and an annular flange 24 to which is joined a metal ring 26 provided with two circular projections 28, 30. A cylinder 32, internally threaded at its upper end, is welded to projection 28 by its flange 34, and a semiconductor unit 16, contact 22, conductors 23, 25, springs 40, 42 and washers 38, 39, 44 are arranged inside the cylinder and compressed by screwing an apertured plug 46 into the end of the cylinder. The spring pressure may be selected by the method described in the prior Specification. The device is sealed by welding flange 56 of a housing 50 to projection 30. Specification 910,016 is referred to.
Patent GB-335131-A (GB)
Title: Improvements in and relating to lamp shades, reflectors and like articles
IPC: F21V1/00
Filed: 1929-12-12
Abstract: 335,131. Ditisheim, M. March 28, 1929, [Convention date]. Lamps forming a line of light.-A line of light for illuminating a platform, shop-window, or the like is formed by means of a number of transparent or translucent glass tubes 1 fastened to a line of skeleton wire rigid rectangular or semi-circular supporting frames at or near both extremities of the tubes.
Patent GB-952298-A (GB)
Title: Improvements in or relating to pressure vessels
Inventor: OTTEN PHILIP SEITER
IPC: F16L39/00
Filed: 1962-10-09
Abstract: 952,298. Pipe couplings. BALDWIN-LIMAHAMILTON CORPORATION. Oct. 9, 1962, No. 38192/62. Heading F2G. [Also in Division F4] A heat exchanger (see Division F4) closure assembly comprises a tube sheet member 17 having a shoulder 40 at one end co-operating with a shoulder 15 of the shell member of the heat exchanger, a cover 19 for closing the other end of the member 17 and a pressure ring 18 received on the member 17, the members being maintained in fluid-tight relationship with one another by studs 20 which are connected between the ring 18 and the cover 19 and an end 14 on the shell member 4 and which are in compression between the ring and the shell member and in tension between the ring and the cover. The ends of tubes 2 are secured in a fluidtight manner such as by roller expanding tube ribs 24 into grooves 25 in the member 17. One of the fluids of the heat exchanger leaves or enters a plenum chamber 28 through a conduit 29 and circulates through the tubes 2. The other fluid enters or leaves the shell 4 through an inlet/outlet, not shown. The tube sheet member 17 is screw threaded at 34 and the ring 18 is screwed on it. The ring 18 has screw threaded holes for the studs 20 and the cover 19 has unthreaded holes 36 through which the studs 20 pass. A locknut 21 is threaded on each stud 20 and turned back to clear the end, and the stud is then turned till its end abuts the end 16 of the shell member 4. Thereafter nuts 22 are secured on the studs 20 to tighten the cover 19 against the end of the member 17, a gasket 37 being interposed. The jacknuts 21 are then screwed along the studs 20 and press on the end surface 16 until the shoulder 15, shown as conical in Fig. 4, bears against the shoulder 40 on the member 17. The angle of inclination of the outer conical shoulder 15 is preferably about 2 degrees steeper than that of the inner shoulder 40. In a modification, the jacknuts 21 are dispensed with and the studs 20 are turned, after tightening the nuts 22, flats being formed on their ends for the purpose. Another modification, Fig. 6, uses separate bolts 41 and studs 42. This construction requires a space between the ring 18 and the cover 19 for the bolt head 41 and a flange 45 projects from the cover 19 for this purpose. In a third modification the conical joint 15, 40 is replaced by square shoulders with a gasket between.
Patent GB-1526961-A (GB)
Title: Method and apparatus for manufacturing pressure sensitive copying sheet
IPC: B41M5/124
Filed: 1975-09-17
Abstract: 1526961 Calendering coated sheet KAN ZAKI PAPER MFG CO Ltd 17 Sept 1975 [17 Sept 1974 20 Sept 1974] 38265/75 Heading D1L In the manufacture of pressure sensitive copying sheet, the sheet is calendered between an elastic roll having a shore hardness of 65-90 and a metal roll following ironing between heated drums and a belt. As shown, paper sheet 11, unwound from roll 12, is coated in air-knife coater 13 with acceptor composition. Following drying in belt-supported tunnel dryer 30, moistening at 49, and ironing between rolls 41-43 and endless canvas belt 48, the coated sheet is calendered at 50 between metal rolls 52, 54 and elastic roll 53 of e.g. rubber, cotton, wool, paper or asbestos. The calendered sheet is then coated with colour former on the reverse side in second air-knife coater 60 and finally dried in second tunnel dryer 80 and heated roll assembly 90. Blade coaters and infra-red heaters may also be used.
Patent GB-873617-A (GB)
Title: Anthraquinone vat dyestuffs and process for their manufacture
IPC: C09B1/36
Filed: 1957-12-11
Abstract: The invention comprises vat dyestuffs of the formula:-A1-X-A2 wherein A1 and A2 are anthraquinonyl radicals or anthraquinone radicals containing a heterocyclic ring fused thereto in such a manner that both keto groups of the anthraquinone nucleus are still present, of which radicals at least one contains a hexahydrobenzoylamino group which may be nuclearly substituted, and X is a direct bond or an aromatic or heterocyclic radical.  The dyestuffs are made by acylation of the appropriate amino anthraquinone compounds or, to obtain dyestuffs of the above formula where X is an aromatic radical linked to A1 and A2 via -CONH-or -NH- groups, by reacting an aromatic compound containing two exchangeable halogen atoms with an appropriate amino anthraquinone or anthraquinones containing the desired hexahydrobenzoylamino p  group or groups.  The dyestuffs dye or print fibres of natural or regenerated cellulose and may be used as pigments. 1-Amino-4-hexahydrobenzoylaminoanthraquinone is made by acylating leuco-1 : 4-diaminoanthraquinone in the presence of nitrobenzene and diethylaniline with hexahydrobenzoyl chloride. 1-Amino-5-hexahydrobenzoylaminoanthraquinone is made by monoacylating 1 : 5-diaminoanthraquinone or by reacting 1-chloro-5-aminoanthraquinone with para-toluene sulphonamide, acylating the product with hexahydrobenzoyl chloride, and hydrolysing with sulphuric acid.
Patent GB-1439281-A (GB)
Title: Fluid flow isolation-regulation valve
IPC: F16K5/16
Filed: 1973-08-15
Abstract: 1439281 Valves FLAIR MFG CORP 15 Aug 1973 [31 Aug 1972] 38586/73 Heading F2V A rotary plug valve comprises a body member 12 having a frusto-conical seat 54 receiving a plug 14 with a central blade 66 the edges 72, 74 of which conform to seat 54. Plug 14 has a cylindrical head 58 engaging opening 50 in body 12, opening 50 having a shoulder 52 forming a continuation of seat 54. A lower frusto-conical portion 76 on plug 14 engages opening 56, a nut 88 on thread 86 locking the plug in position. 0-ring seals (65), 84 mounted in recesses in head 58 and spigot 80 prevent leakage. The inlet and outlet ports (30), 48 adjacent seat 54 are trapezoidal in transverse cross-section. The surfaces of plug 14 may be coated with a synthetic plastics, e.g. P.T.F.E. Other similar coatings are specified.
Patent GB-1086713-A (GB)
Title: Process for the preparation of cyclic ª‡-perfluoro-di-p-xylylenes
IPC: C07C23/02
Filed: 1964-09-22
Abstract: Cyclic (p-CF2-C6H4-CF2-)2 is made by forming the diradical .CF2-C6H4-CF2. by pyrolysing at 800-1000 DEG  C. a compound p-C6H4(CF2X)2(I), where is a halogen of lower bond strength than F, or one X may be H, and cooling and condensing the diradical in intimate mixture with a fluid medium containing an inert organic solvent and kept at above 50 DEG  C.  Starting materials I, where X is Cl or Br, are made by reacting the precursor (X=H) with Cl2 and N-bromosuccinimide, respectively.ALSO:The wet-strength of paper is increased by impregnation with vapour deposited poly (alpha-perfluoro-p-xylylene).
Patent GB-1432759-A (GB)
Title: Manufacutre of dinitriles
Filed: 1972-08-18
Abstract: 1432759 Dinitriles from mononitriles IMPERIAL CHEMICAL INDUSTRIES Ltd 9 Aug 1973 [18 Aug 1972] 38624/72 Heading C2C A process for the preparation of olefinically unsaturated dinitriles comprises heating an olefinically unsaturated starting material comprising unconjugated mononitrile and devoid of unsubstituted olefin in the presence of an olefin disproportionation catalyst. The catalyst is suitably an oxide or carbonyl of a transition metal such as tungsten, molybdenum or rhenium. The reaction may be carried out in the liquid or vapour phase. An example describes the conversion of 3-pentenenitrile to 1,4-dicyanobutenes.
Patent GB-805726-A (GB)
Title: Improvements in or relating to circuit arrangements for automatically regulating sidetone damping in telephone stations
IPC: H04M1/58
Filed: 1956-12-20
Abstract: 805,726. Anti-side-tone circuits. SIEMENS & HALSKE A.G. Dec. 20, 1956 [Dec. 30, 1955], No. 38867/56. Class 40 (4). In a time-balancing network, a complex impedance comprises merely a voltage-dependent resistance V connected in parallel with a condenser C1 with a resistor R1 in series with this parallel connection.
Patent GB-388900-A (GB)
Abstract: 388,900. Plugging blast-furnace tapholes. GIESE, A. F., 644, Grant Street, Gary, Indiana, U.S.A. Jan. 12, 1932, No. 948. [Class 51 (ii).] In a clay gun G, for plugging a blast-furnace taphole 43, having a piston 25 movable longitudinally within the clay cylinder 10, the piston-rod 26 is formed as a screw and is driven by a sleeve nut 20 rotated through worm gearing 22, 36 by an electric motor 31. The piston 25 is fitted with a washer 29 to prevent leakage of clay and is guided in the cylinder 10 by longitudinal bars 27 fitted in the wall thereof. The cylinder has two filling openings 37, 38 provided with closures 39, and its outer conical end 41 delivers to a nozzle 40 having its lower wall parallel to the axis of the cylinder and its upper wall downwardly inclined. A limit switch is provided in the circuit of the motor 31 so that the piston is stopped automatically when it reaches the fully extended and fullv retracted positions. To indicate, at any time during operation, the intermediate position of the piston, the rod 26 carries a pointer 104 projecting through a slot in the housing 106 and adapted to travel along a dial or scale 105. The latter may be fitted with contact strips C .. C<5> insulated from one another and adapted to be engaged successively by a contact 109 on the pointer 104 to complete the circuits to a series of signal lamps L .. L5. The walls 17, 18 carried by the gun G are secured to a carrier 58, Fig. 1, having two sets of rollers 62, 65 which engage in separate guide slots 56, 57 formed in the side walls of a gunsupporting carriage C which is secured to the outer end of a boom B rotatable about a fixed post by a belt 48. The slots 56, 57 are shaped as shown so that as the carrier 58 is operated by a fluid-pressure cylinder 69 to move the gun into plugging position, its nozzle is first tilted downwardly and then moved in a straight line into the taphole 43. The gun is rigidly locked in position during plugging by a U-shaped locking member 78, which secures the forward end 53 of the carriage C to a bar 76 carried by a framework 74 mounted on the furnace, and by a ratchet device 83, Fig. 8, having pawls 87 which are pressed inwardly by a weight 93 to grip securely a toothed lug 84 extending upwardly from the gun cylinder 10. The locking devices are released by cables 80, 94 respectively.
Patent GB-1056265-A (GB)
Title: Improvements in or relating to automatic gain control circuits
Inventor: RHODES JOHN GEORGE LAYCOCK
IPC: H03G3/30
Filed: 1962-10-15
Abstract: 1,056,265. Automatic volume control. SHIPTON ELECTRONICS Ltd. Oct. 15, 1963 [Oct. 15, 1962], No. 38937/62. Heading H4R. In an audio.frequency amplifier, particularly for feeding the recording head in a telephone answering machine, automatic gain control is provided by a transistor 6 whose emittercollector impedance is shunted across the amplifier input, which impedance is varied by the amplifier output which is rectified in bridge rectifier 7, smoothed in filter R6, C3 and R5, and applied to the base of transistor 6. The transistor bias being arranged so that the transistor is cut off until the amplifier output reaches a predetermined value, any further increase resulting in a reduction of the emittercollector impedance thus tending to maintain the output constant at the predetermined value.
Patent GB-1137002-A (GB)
Title: A dropper for use with wire fencing
Inventor: GOODALL CHARLES
IPC: E04H17/10
Filed: 1965-09-13
Abstract: 1,137,002. Wire fencing. SWYFTITE Ltd. 10 Nov., 1966 [13 Sept., 1965], No. 38967/65. Heading E1B. A dropper wire 10 holding fencing wires 14 in spaced relationship co-operates with a locking rod 13 and is undulated to provide V or U-shaped loops 11, 12, alternate loops 11 being aligned to lie in one plane while the remaining loops 12 are bent to lie in another plane, the two planes diverging at approximately 30 degrees. In a modification the aligned loops are curved rather than straight in plan view. In a further modification the two series of loops are formed by two wires secured (e.g. twisted) together to provide opposed pairs of angularly displaced loops.
Patent GB-1256062-A (GB)
Title: Improvements in or relating to loading mechanisms for guns
Inventor: BRINT N T
IPC: F41A9/32
Filed: 1967-08-25
Abstract: 1,256,062. Automatic guns. DEFENCE, SECRETARY OF STATE FOR. 20 Aug., 1968 [25 Aug., 1967], No. 39312/67. Heading F3C. An automatic gun having a barrel 1 and breech ring 2 on a mounting 5 comprises a feed tray 16 movable transversely of the gun axis above the path of movement of the breech ring to transport rounds of ammunition 19 to a loading position, these rounds being engaged by spring fingers 20 on the tray. The tray 16 is moved by a pinion 28 mounted for rotation about an axis fixed to the mounting 5, a roller 30 eccentrically secured to the pinion engaging a slot in the tray, this slot having a straight portion 22 parallel to the gun axis and a semicircular portion 24. The pinion 28 is engaged by a toothed rack 31 slidable in the mounting 5 and biased to the rearward position by a spring 33. During run-out of the gun the rack 31 is engaged by a spring-biased catch 34 movable with the breech ring 2 (described further with reference to Fig. 7, not shown) whereby the rack is moved to the forward position and the tray 16 is moved inwardly from the firing position shown in Figs. 2, 8(a) to the position shown in Fig. 5 in which a new round 19 is presented at the loading position. Owing to the semicircular slot portion 24 the tray 16 is not moved during the first 180 degrees of clockwise motion of the pinion 28, this pause being utilized for the operation of a synchronized extractor/rammer. At the completion of run-out the catch 34 releases the rack 31 which is retracted by the spring 33 and the tray is returned to the Fig. 2 position. The extractor/rammer is as disclosed in Specification 1,255,923 and comprises a claw 7 carried by an arm 8 radially extending from a sleeve 9 keyed to, and slidable on a guide tube 6 rotatably supported in the mounting 5, the sleeve also being secured to an inner tube 10 slidable within the tube 6, the inner tube being biased forwardly by a compression spring 11. The extractor/rammer engages the spent cartridge case 13 as the breech opens and the gun recoils after firing, whereafter the rammer is carried rearward by the recoiling breech ring 2, compressing the rammer spring 11. At the end of recoil the rammer is engaged by a spring catch (Figs. 3, 6, not shown) and retained, as the gun runs-out, to extract the cartridge case 13 from the breech. The arm 8 is rotated by a slide 15 having rack teeth 17 engaging a toothed segment 18 fixed to the tube 6, the slide 15 having a slot 21, 23 similar to that in the tray 16 and similarly operated by a roller 29 eccentrically secured to a pinion 27 engaging the rack 31.
Patent GB-995638-A (GB)
Title: Transporting arrangement for wrapping machines
IPC: B65B35/24
Filed: 1961-11-03
Abstract: 995,638. Endless conveyers; wrapping machines. O. NIEPMANN, and G. MONNING- HOFF, [trading as MASCHINENFABRIK FR. NIEPMANN & CO]. Nov. 3, 1961 [Feb. 22, 1961], No. 39391/61. Headings B8A and B8C. An endless conveyer 2 in a packing machine runs at slower speed at a wrapping station B and thereafter accelerates to a higher speed. Abutments 3 engage successive articles 1 from the base of a stack (right hand side of Figure). Wrapping material 4 is engaged and drawn into horizontal folds 4b. Between A and B the conveyer decelerates so that each article can be progressed by gripper jaws 8, 9. Each article is thus temporarily clear of its associated abutment 3 when folding members 6, 7 operate.
Patent GB-1247778-A (GB)
Title: Improvements in or relating to silicon-containing iron
IPC: C25D15/02
Filed: 1969-08-06
Abstract: 1,247,778. Fe-Si and its electro-deposition. SIEMENS-AG. Aug.6, 1969 [Aug. 7, 1968], No.39445/69. Headings C7A and C7B. Si-containing Fe suitable for electrical engineering applications is composed of a dispersion in Fe of a Si-containing powder having a grain size of 0À1-1 Ám, the Si having a concentration of 1-5% by weight of the Si-containing Fe. The powder may be of pure Si or FeSi. The material may be made by electro-deposition on to one or both sides of sheet Fe from an agitated bath containing emmulsified Si powder of the specified size. In the examples the baths also contain (i) FeCl 2  and MnCl 2  (pH 1À5-2, temperature 90‹C., current density 2A/dm<SP>2</SP>), and (2) Fe (II) fluoborate and NaCl (pH 1-3, temperature 60‹C., current density 2A/dm<SP>2</SP>). The coatings may be allowed to remain on the sheet Fe or may be stripped off.
Patent GB-1484964-A (GB)
Title: Frame members and frames constructed therefrom
IPC: G09F13/04
Filed: 1975-09-26
Abstract: 1484964 Light-box frames JC McNEIL 26 Sept 1975 [26 Sept 1974] 39534/75  Heading A4X A light-box for displaying a picture or the like comprises a frame 5 with a slot for slidably receiving and holding the picture and a backing structure 13 accommodating a light fitting 15. The frame 5 is made by bending a one piece elongate member suitably notched to provide frame corners and having the cross-section of Fig. 2 such that the picture may be held in groove 8 and the edges of the structure 3 in groove 27, 28. The box may be of any desired shape the one piece member being appropriately formed and bent.
Patent GB-977984-A (GB)
Title: Separation of methanol and methyl acetate
Inventor: HALPERN BENJAMIN D
IPC: C07C31/04
Filed: 1961-11-06
Abstract: 977,984. Separating methyl acetate from methanol by distillation. BORDEN CO. Nov. 6, 1961, No. 39673/61. Heading BIB. In a process for separating methyl acetate from a methanol/methyl acetate mixture, the mixture is distilled in fractionating column 16, and water is introduced into the column at a level where the concentration of methyl acetate in the mixture is at-least 70%, the proportion of water added being 100-600 parts by weight per 100 parts by weight of methanol in the vapours in the column at the level of the waterinlet. The azeotrope of methyl acetate and water distils over into condenser 24 and the condensate flows into receiver 32, where part of it is returned to column 16 as reflux and the remainder is passed into column 22, wherein the methyl acetate/water azeotrope is contacted with n-pentane vapour, and the water is entrained by the pentane. The pentane/water vapour is condensed in condenser 30 and the condensate flows into a gravity separator 38. The pentane recovered from separator 38 passes back into column 22 and the water is rejected as effluent. Dehydrated methyl acetate is withdrawn continuously from the base of column 22. A dilute mixture of methanol in water, plus traces of methyl acetate, passes from the reboiler 40 of column 16 into column 18, where it is fractionated to remove the remaining methyl acetate. The distillate comprises a ternary azeotrope of methyl acetate, methanol and water, and is recirculated into the feed to column 16. A mixture of methanol and water passes from the reboiler 42 of column 18 into column 20, where it is fractionated to produce methanol as the overhead distillate, the water plus traces of methanol being discharged as effluent from reboiler 44. Instead of pentane, the following liquids may be employed for dehydrating methyl acetate: hexane, cyclopentane, methylene chloride, and mono-bromoethane.
Patent GB-1529090-A (GB)
Title: Dispensing container for small tools
IPC: B25H3/00
Filed: 1976-09-24
Abstract: 1529090 Containers for drills and the like V LONGARETTI 24 Sept 1976 39719/76 Heading B8P A container, which may be moulded from a plastic, for holding drills or like shaped tools has recesses A<SP>1</SP>, A<SP>11</SP> for the drills in a body portion 10 and a rotatable cover 16 having one hole F<SP>1</SP> and one hole F<SP>11</SP> that can be brought to coincide with the recesses A<SP>1</SP>, A<SP>11</SP>. The holes F<SP>1</SP>, F<SP>11</SP> are so positioned that only one recess is uncovered at a time. An indented edge 32 facilitates manipulation of the cover and windows 26, 28 enable identifying notations to be viewed.