baber/WOPTO huggingface dataset:
Patent GB-581218-A (GB)
Title: Improvements in electrical communication systems
IPC: H04B3/04
Filed: 1944-06-30
Abstract: 581,218. Two-way transmission. WESTERN ELECTRIC CO., Inc. June 30, 1944, No. 12547. Convention date, July 1, 1943. [Class 40 (iv)] [Also in Group XL] In an electrical communication system, harmonics produced by the limiting action of a volume limiting device are caused to control the effectiveness of a transmission element, such as the gain of an amplifier, associated with the system. Fig. 1 shows the invention applied to a diversity reception system. In the upper channel an antenna A feeds a high-frequency receiver REC and limiter VL the output from which feeds, through a low-pass filter LPF, a signal amplifying channel, and, through a high pass filter HPF, a control circuit. The signal channel includes a pentode amplifier PA and transformer T3 feeding a line L to subsequent stages. The control circuit fed by HPF comprises a full-wave rectifier R and smoothing network N. The lower channel is identical and also feeds into line L. Assuming that antenna A is receiving a signal strong enough to be subject to limiting in VL, the harmonics thus produced will be selected at HPF and rectified at R to produce at the upper terminal of N a negative bias which is applied at a1 to reduce the gain of pentode PA1 in the other channel, thus selecting the signal received on antenna A for feeding to line L. Also, since the screen grid SC2 of pentode PA receives its potential from point c1 of the anode circuit of PA1, the reduction in anode current in PA1 increases the screen potential and hence the gain of PA thus increasing the preponderance. Further the screen potential of PA1 is reduced due to the increased anode current in PA, as it is derived from point c. In a modification, Fig. 2 (not shown), the pentodes are replaced by triodes which are normally biassed to cut off, and are opened up by rectified harmonics from the respective limiters, the two channels operating independently of one another. Fig. 3 shows a gain control arrangement for a frequency modulation receiver. The output from limiter VL is fed through low pass filter LPF to the remaining signal stages. The limiter output is also fed to high pass filter HPF which selects the harmonics produced by the limiting action which are rectified at R and applied as A.V.C. bias to the last I.F. amplifier IFA. U.S.A. Specifications 2,309,258 and 2,047,312 are referred to.
Patent GB-747929-A (GB)
Title: Improvements in combustion apparatus of the kind including a cyclone furnace
IPC: F23C3/00
Filed: 1954-04-30
Abstract: 747,929. Cyclone furnaces. BABCOCK & WILCOX, Ltd. April 30, 1954 [May 2, 1953], No. 12601/54. Class 51(1). In combustion apparatus of the kind in which a cyclone furnace delivers to a secondary furnace chamber, a portion of the peripheral wall of the cyclone furnace provided with fluid heating tubes serves as a partition wall separating the two chambers. Figs. 1 and 2 show the invention applied to a vapour generating installation having two horizontal cyclone furnaces having slag discharge openings 12 and gas outlets 11 which discharge into a secondary furnace chamber 13, the arrangement being such that the parts 3 of the walls of the cyclone furnaces separate the latter from the secondary chamber. The lower part of the chamber 13 is formed as a hopper 18 leading to a slag-discharge shaft 19 which extends downwardly below the level of water in the casing of a scraper conveyer 20. The gases from the furnaces 1, after passing downwardly into the secondary chamber 13, ascend between the two furnaces 1 to pass over the slag screen 21 into the radiation chamber 22. In a modification a secondary chamber receives the gases from three cyclone furnaces in each of which a portion of the peripheral wall extending round the whole circumference serves as a partition wall separating the cyclone, furnace from the secondary chamber.
Patent GB-637737-A (GB)
Title: Improvements in/or relating to a process for preparing a polyvinyl acetal resin and the polyvinyl acetal resin resulting from the said process
IPC: C08F8/28
Filed: 1947-05-09
Abstract: A polyvinyl acetal resin is prepared by reacting a sulphuric acid hydrolysed polyvinyl ester with an aldehyde in the presence of a mixture of sulphuric acid and an alkanol containing from 1 to 8 carbon atoms until the hydroxy content of the product is substantially constant and thereafter maintaining the reaction conditions till the non-extractable sulphur content of the resin does not exceed 0.025 per cent by weight calculated as SO4, not over 1.3 per cent of SO4 groups calculated as H2SO4¦te being present based on the total charge and 250 to 1000 parts of the alkanol being present for every 100 parts of the hydrolysed polyvinyl ester.  The acetalization is usually complete in 1 to 3 hours, using heating and stirring, these conditions being continued for 3 to 5 hours to obtain the required minimum of non-extractable sulphur.  The polyvinyl esters specified are polyvinyl acetate, propionate and butyrate, while as aldehydes butyraldehyde, formaldehyde, acetaldehyde, propionaldehyde or valeraldehyde may be used.  Methanol, ethanol, propanol, butanol, hexanol and octanol are specified as alkanols. The acetal resin may be heat stabilized by treating with an alkali metal hydroxide or a salt thereof with a weak acid.  U.S.A. Specifications 2,258,410 and 2,282,057 are referred to.  The Specification as open to inspection under Sect. 91 comprises also using cyclohexanone in place of an aldehyde and using octadecanol, glycols, glycerine, pentacrythritol, sorbitol, mannitol and benzyl alcohol in place of the specified alkanols. This subject-matter does not appear in the Specification as accepted.
Patent GB-879261-A (GB)
Title: Printing machines
Inventor: LONGMAN HAROLD HUGH
IPC: B41L47/24
Filed: 1958-04-21
Abstract: 879,261. Printing-machines, feeding webs. UNILEVER Ltd. June 26, 1959 [April 21, 1958], No. 12619/58. Classes 100(1) and 100(2) A printing machine comprises a table 7 reciprocable in a direction parallel to the plane of the surface of the table, a printing head 3 movable towards and away from the table, paper moving means for moving a strip of paper 14 across the table to receive prints, the paper moving means including means for engaging the strip, and driving means for the paper moving means which are actuated by at least part of the movement of the table, the arrangement being such that the strip is advanced a predetermined distance upon each table reciprocation. As shown, the table 7 is mounted on rails 8 and carries feed rollers 15, 16, the roller 15 being driven by a one-way clutch by a pinion, not shown, engaging a rack 21, such that movement of the table in one direction causes the rollers 15, 16 to advance the strip 14 from a spool 13. Alternatively, the strip may be fed by one or more belts or pin wheels. A base printing plate 35 projects through an aperture 12 in the table 7 for co-operation with the head 3 carried by a pivotally mounted spring-urged frame 2, a printing plate carried by the head 3 being inked by a ribbon, not shown. Carbon paper 30 is fed through slots in the table 7 for co-operation with the head 3, with the table in its right hand position, for producing a carbon copy of matter printed on a sheet positioned against a guide 31.
Patent GB-694828-A (GB)
Title: Improvements in or relating to dispensing devices particularly for spraying liquefied aerosol compositions
Inventor: MARKES DOUGLAS HENRY
IPC: B65D83/16
Filed: 1951-05-29
Abstract: 694,828. Valves. METAL BOX CO., Ltd. March 10, 1952 [May 29, 1951], No. 12622/51. Class 135 A device for dispensing volatile products stored under pressure, e.g. liquefied aerosol compositions, consists of a rubber housing 2, Fig. 1, secured within a neck 15 of a container by a cannelure 18 and housing a spring-loaded ball valve 11 seating at 12 and actuating, through a plunger 4, by hand pressure applied to a diaphragm 3 which is integral with the housing 2. An outlet nozzle 8 extends from the housing 2. The valve spring 10 is housed in a metal body 9 from which depends a tube 14 extending into the container. In modifications, the diaphragm is separate from the housing 2 and the nozzle extends through the side wall of the neck 15 of the container. In a further modification, the nozzle is fitted in an extension 5b, Fig. 6, of the diaphragm 3c, the valve being opened by depression of the extension. Fig. 7 shows another modification in which the valve, in the form of a rubber disc 24, is housed in a body 9a which has an external, annular, sealing washer 2b. This embodiment may be modified by the provision of a hemispherical moulded rubber valve. In Fig. 9 is illustrated a device for attachment to a thin, e.g. tinplate, container 1a, the rubber housing 2c and diaphragm 3a being enclosed by a thin metal sleeve 26 and retained by a cannelure 18a within an inturned neck 15b of the container. In a modification of this arrangement, the rubber housing with which the diaphragm, having an extension carrying the nozzle as in Fig. 6, is integrally formed contains a metal insert which provides a seating for a hemispherical, moulded rubber valve.
Patent GB-471274-A (GB)
Title: An improved method of manufacture of boots and shoes
IPC: A43B13/41
Filed: 1936-05-05
Abstract: 471,274. Insoles for boots and shoes. PARKER, E. A. May 5, 1936, No. 12642. [Class 17 (ii)] An insole has an integral projecting portion 7 at its forepart, formed by splitting the insole and skiving the margin of the underflap, to serve as bottom filler. A metal shank stiffener 10 and insertions of sheet material 5 such as vulcanite or vulcanized board between flaps formed by splitting the toe and heel ends are also provided. The projecting portion 7 may be slashed, as shown, for flexibility. A coating of adhesive or a strip of fabric coated on both sides with adhesive is applied around the forepart and waist of the insole, the adhesive surface being covered with a removable layer of " Cellophane " (Registered Trade Mark) or grease-proof paper which is removed during the making of the shoe, for the attachment of the lasted upper. The upper is adapted to extend over the adhesive coated margin of the insole and is secured direct thereto by hammering it against the insole, the lining being cut so as to extend only a very small distance beyond the edge of the insole. Specification 417,421 is referred to.
Patent GB-381120-A (GB)
Title: Improvements in and relating to metal vapour rectifiers
IPC: H01J13/20
Filed: 1932-05-02
Abstract: 381,120. Metallic-vapour rectifiers. AKT.-GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. May 2, 1932, No. 12649. Convention date, May 4, 1931. [Class 39 (i).] A grid e is suspended within an anode shield d by a tungsten or molybdenum pin f over which are placed an insulating thimble g having a closed end, and a metallic cap h which is screwed into the shield. The pin is secured to the grid through a screw or nut, and a fluted insulating disc i is slipped over the thimble g.
Patent GB-1479277-A (GB)
Title: Process for imparting antistatic properties to plastics
IPC: C09K3/16
Filed: 1976-03-30
Abstract: 1479277 Antistatic plastics materials HOECHST AG 30 March 1976 [10 April 1975] 12743/76 Heading C3P Antistatic properties are imparted to plastics by blending pulverulent plastics materials with 4 to 12 weight per cent of conductive carbon black having a water absorption stiffness (AS) of 15 to 35, a specific resistance of 10-1 to 10<SP>-3</SP> ohms cm. under a moulding pressure of 100 to 180 atmospheres absolute, a bulk density of 100 to 180 g./litre and a BET surface area of 100 to 1,000 m.<SP>2</SP>/g., and prepared by a process wherein an aqueous suspension of carbon black having an AS number above 15 and obtained by subjecting normally liquid hydrocarbons to thermal conversion at 1200 to 2000 C. and 1 to 80 atmospheres absolute in the presence of oxygen and water scrubbing the resulting carbon black-containing reaction gas, is blended at 5 to 120 C. and 1 to 20 atmospheres absolute in a liquid phase at pH 7 to 10 for 1 to 20 minutes with vaporizable liquid aliphatic or cycloaliphatic hydrocarbons, the carbon black is separated from the liquid matter, freed from water and hydrocarbons by heating, and annealed at 200 to 2200 C. for 20 to 30 minutes. The polymer may be polyethylene, polyproylene, polystyrene or polyvinyl chloride, and the compositions may also contain stabilizers, softeners and lubricants.
Patent GB-238624-A (GB)
Title: Improved brooder, rearer, and perching house for poultry
IPC: A01K31/22
Filed: 1924-05-24
Abstract: 238,624. Valley Poultry Farm, Ltd., and Boyden, H. H. May 24, 1924. Poultry houses; rearing-appliances.-A perching house is converted into a brooder or rearer by the insertion of a removable vertical panel extending the whole width of the house bat only part of the height, the compartment thus formed being furnished with heating-apparatus and with a removable cover provided with ventilating means and a transparent inspection window. The house may be made of metal and wood compoboarding and the brooding or rearing compartment lined with asbestos-cement composition. The removable panel consists of a sliding door 8 of non-conducting material provided with a small exit opening which is closed by a swivelling metal cover having a grip formed by turning back one corner of it. Hinged to the loose metal cover 9 is an arched top 13 provided with ventilation holes 14 and having secured to it a perforated baffle plate 15 and a heat deflector plate 18, both made of asbestos cement. In the cover 9 is a glass plate 12, and above it is a hinged window or door 11. A tube 20 containing a thermometer is secured in the cover 9 by means of a cork or a shaped piece of wood. Within the brooding chamber is a lamp 10. The hinged end 4 of the poultry house is provided with an upper window 26 covered with wire gauze and a lower aperture 27 covered by a gauze flap 28 adapted to be fastened down or up by turn-buttons 30, 31. A sliding shutter 32 carries a swivelling stirrup 34 having a number of cross-bars to engage a knob 36. When the shutter 32 is in its lowest position with a bent-over part 37 resting on a stop 38 the swivelling stirrup engages a knob 39 on a lower shutter 33. The sides of the poultry house may each be provided with an inspection window and with a small closable opening for the use of the young chickens. The opening is closed by a door hinged at the bottom and adapted to form a bridge or ladder, being provided with steps or cross-pieces. Sheet-metal brackets 44 are provided to receive perches.
Patent GB-750968-A (GB)
Title: Capacitor unit
Inventor: FOSTER JAMES HOWARD
IPC: H01G4/30
Filed: 1954-05-04
Abstract: 750,968. Inductors. ERIE RESISTOR CORPORATION. May 4, 1954, No. 12913/54. Class 38 (2). [Also in Groups XXXVI and XL (c)] A variable capacitor comprising at least one metal foil electrode moulded into the surface of an insulating sheet may be provided with stator electrodes coupled together electrostatically by the rotor electrode and interconnected conductively by metal strips serving as inductor members. Fig. 1 shows a section through a variable capacitor, in this case not provided with inductor members, and comprising a rotor 1 and stator 2, the rotor 1 being keyed to a pin 3 having a screwdriver slot to facilitate adjustment. The rotor and stator are maintained in alignment by means of a groove 6 in the rotor 1 which co-operates with a complementary ridge 7 in the stator 2. Fig. 9 shows an alternative form of stator comprising electrodes 20a, 21a and terminals 22a, 23a, the electrodes being connected by arcuate metal pieces 26 behaving as inductor elements; thus when assembled with the rotor element shown in Fig. 1 the arrangement behaves as a tunable resonant circuit. Either electrode member may be replaced by a metal plate. Thus Fig. 8 shows a rotor which may replace the rotor 1, Fig. 1. Alternatively the stator of Fig. 9 may be replaced by a metal plate stator, Fig. 11.
Patent GB-579581-A (GB)
Title: Improvement in snap ring assembling tools
IPC: B25B27/20
Filed: 1944-07-06
Abstract: 579,581. Holding-tools. JACK & HEINTZ RESEARCH CORPORATION. July 6, 1944, No. 12944. Convention date, July 1. 1943. [Class 61 (ii)] A device for inserting a spring ring 6 into its recess 7 in the housing 1 consists of a barrel 9 with internal splines 12 parallel for the upper part of their length and tapering inwardly at the lower part 13 and a splined plunger 11 of uniform diameter shaped at the end 14 to push the ring through the contracting lower part of the barrel whereupon it springs open into the recess 7.
Patent GB-109618-A (GB)
IPC: A01B59/042
Filed: 1917-09-10
Abstract: 109,618. Blancke, A. C. Sept. 8, 1913, [Convention date]. Hooks, spring.-The connexion between a shareframe and a tractor is formed by a coupling comprising a hook s sliding between two fish-plates and carrying transverse members w provided with hooked links y between which and similarly hooked links y<1> mounted on the main part of the coupling compression springs z are interposed.
Patent GB-1169757-A (GB)
Title: Copolymers, and a process for their manufacture
IPC: C08F210/00
Filed: 1967-03-20
Abstract: 1,169,757. Copolymerizing ethylene, propylene and a norbornene derivative. FARBWERKE HOECHST A.G. 20 March, 1967 [19 March, 1966], No. 12964/67. Heading C3P. A process for the manufacture of a vulcanizable copolymer comprises copolymerizing by a low-pressure process a monomer mixture containing at least 20% of ethylene, at least 20% of propylene, and between 2% and 4À7% of a 5 - (2<SP>1</SP> - methylbut - 2<SP>1 </SP>- enyl) norbornene - (2) and/or 5-(3<SP>1</SP>-methylbut-2<SP>1</SP>-enyl)norbornene-(2), in the presence of a catalyst comprising (a) a vanadium compound soluble in an inert dispersing agent or solvent; and (b) an organoaluminium compound of formula R 3 Al 2 Cl 3  or RAlCl 2 , or a mixture thereof, in which R is an alkyl radical of 1 to 6 carbon atoms. Optionally a third catalyst component may be present e.g. thionyl chloride, hexachloropentadiene, hexachlorocyclopentanone, or an ester of trichloroacetic acid. The process may be performed in the presence of an inert dispersing agent or liquid propylene. Vanadium compounds specified are VOCl 3 , VCl 4 , VO(OC 2 H 5 )Cl 2  and VO(OC 2 H 5 ) 2 Cl. Comparative experiments in which the third monomers are the 5-methylene,- 5 - vinyl -, 5 - (but - 3<SP>1 </SP>- enyl) - and 5 - (cyclohex - 3<SP>1</SP> - enyl) - norbornenes, dicyclopentadiene, cis - and transhexadiene - 1,4, 4 - methyl - cis- 1,4 - hexadiene, 5,7 - dimethyl - 1,6 - octadiene, 1,3 - butadiene, 5 - (2<SP>1 </SP>- butenyl) - and 5- (3<SP>1</SP>,5<SP>1</SP> - dimethyl - 4<SP>1</SP> - hexenyl) - norbornenes, and endo-dicyclopentadiene, or in which the component (b) is (C 2 H 5 ) 3 Al, (i-C4H 9 ) 3  Al or (C 2 H 5 ) 2 AlCl are also described. The copolymers may be vulcanized using conventional techniques.
Patent GB-772353-A (GB)
Title: Improvements in or relating to steam boiler installations
Inventor: TONGUE HAROLD
IPC: F22B1/18
Filed: 1951-05-31
Abstract: 772,353. Forced-flow steam boilers; tubular heat exchangers. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Aug. 22, 1952 [May 31, 1951], No. 12984/51. Classes 64(3), 123(2) and 123(3) A forced-flow steam generator heated by a hot radioactive gas, e.g. the coolant gas from a nuclear reactor, comprises a row of four vertically disposed evaporator units 1 on each side of which are horizontally mounted two similarly constructed units constituting respectively a superheater 9 and an economizer 10. Each unit consists of a cylindrical jacket 4 with water or steam tubes 5 extending parallel to the axis of the unit between headers 6, Fig. 3, the tubes 5 being externally grooved as shown at 8 and mounted coaxially in and in contact with outer tubes 2 as described in Specification 703,081, 'the tubes 2 terminating in a tube plate 3 spaced inwardly from the header 6, the spaces 7 between the tube plates 3 and the headers 6 at each end of the unit forming leakage headers whence sampling tubes 23 lead to respective monitoring devices sensitive to radioactivity so that leakage in any unit of the system may be instantly detected. The hot gas from the reactor is fed through pipes 12 to the superheaters 9, flows around the tubes therein and passes through pipes 13 to the inlet headers 6 of the evaporators 1. After passing through the evaporator tubes the gas is fed by pipes 14 to the outer jackets of the economizers 10 and after flowing around the tubes therein passes back through pipes 15 to the reactor. Feed water is supplied to the economizers by pipes 21 and flows therefrom through pipes 22 to a vertical steam and water drum 11. A circulating pump 16 draws water from the bottom of the drum 11 and feeds it through pipes 18 to the bottom of the evaporators, the steam-water mixture flowing through pipes 17 into the drum 11 wherein it is separated, the steam passing through pipes 19 to the superheater units 9 and out through pipes 20 to the point of use.
Patent GB-109316-A (GB)
Title: Improvements in Semi-rotary Wing Pumps.
IPC: F04C9/00
Filed: 1916-09-14
Abstract: 109,316. Matterson, H u x l e y , & Watson, and Bullock, R. C. Sept. 14, 1916. Oscillating-vane type; mounting and supporting; packing vanes. - The pump body A has front and back plates bolted to its flanges, the back plate being provided with attachment lugs D. The edges of the oscillating vane E are fitted with packing-pieces H, I, J bevelled at the ends, the piece J being divided into two portions having adjacent bevelled ends thrust apart by a spring- pressed ball K.
Patent GB-1319722-A (GB)
Title: Weighing apparatus for belt conveyor
IPC: G01G11/00
Filed: 1971-05-04
Abstract: 1319722 Endless conveyers FMC CORP 4 May 1971 [18 May 1970] 13050/71 Heading B8A [Also in Division G1] In an arrangement for measuring the mass on a belt conveyer (see Division G1) a belt 14 is supported by a flexible member 40 comprising a square-woven nylon fabric core 42 with integral resilient neoprene rubber rollers 44, the ends being journalled in bearings 46 for free rotation.
Patent GB-312906-A (GB)
Title: Improvements in presses for extracting liquids from solid materials
IPC: B30B9/20
Filed: 1929-04-27
Abstract: 312,906. Villez, P. A. H. June 2, 1928, [Convention date]. Roller presses.-Apparatus for extracting liquid from solid materials comprises two rollers a, a<1>, rotating at a slow speed on stationary supporting shafts o, o'. The material is fed to the nip of the rollers through a tapering nozzle d by a screw f. The screw is of small diameter relative to that of the rollers. It is rectangular in crosssection beneath a hopper c but circular at the forward end so as to engage with circular projections on a rotating disc g, which prevents the material from travedling backwards along the screw. The rollers, the disc g, and the screw are driven by spur and bevel gearing, elements of which can he changed to alter the speed of the screw and disc relatively to that of the rollers. The compression due to the screw is sufficiently high to prevent the material slipping over the rollers.