baber/WOPTO huggingface dataset:
Patent GB-864860-A (GB)
Title: Improvements in or relating to electrical apparatus for providing a measure of standing wave ratio in a high frequency electrical transmission means
Inventor: THOMASON JOHN AUSTIN
IPC: G01R27/06
Filed: 1956-04-24
Abstract: 864,860. Impedance measurement; voltage measurement. GENERAL ELECTRIC CO. Ltd. July 24, 1957 [April 24, 1956], No. 12606/56. Class 37. Apparatus for indicating the standing wave ratio in a high-frequency transmission system comprises means for deriving a first signal dependent on electromagnetic wave energy in one direction in the system and a second signal corresponding to the reflected energy and means arranged to vary the second signal in dependence upon the first signal but so that the second signal does not vary with variation in energy of the electromagnetic waves, the second signal as varied in dependence on the first signal being a measure of the standing wave ratio. In the embodiment shown, a klystron oscillator 2 modulated by pulses from a modulator 1, sends signals along a waveguide 4, the frequency of oscillation being varied by motor 3. The waveguide is provided with directional couples 9, 10, 11, variable attenuators 7, 8, and is connected to the waveguide 5 to be tested and is terminated by a matched load 6. An incident electromagnetic wave in the forward direction will be propagated in arm 9a to wavemeter 12, in arm 10a to probe 15, and hence to rectifier 16 and amplifier 18 to control the gain of amplifier 23, and be absorbed by a matched load 19 in arm 11a, the reflected wave together with the incident wave setting up standing waves in the waveguide 4. The reflected wave is propagated in arm 11b, to rectifier 21 amplifier 22 and input terminal 23a of amplifier 23, and is absorbed by matched loads 17, 14 in arms 10b, 9b. The signal applied at 23a is thus amplified in depence on that applied to control terminal 23b and the gain of the amplifier 23 is so controlled that the signal appearing at output terminal 23c is independent of the variation of energy of the electromagnetic wave in waveguide 4 in the forward direction and gives a direct indication of the reflection coefficient (and therefore of the modules of the standing wave ratio) of waveguide 5 and varies directly therewith. The output signal is applied to unit 24 e.g. an oscilloscope or meter. An absorption-type wavemeter may replace meter 12. A construction of a controlledgain amplifier is described in detail (Fig. 2, not shown).
Patent GB-918661-A (GB)
Title: Improvements in or relating to anti-vibration mountings
Inventor: AMES GERALD JAMES
IPC: F16F13/00
Filed: 1960-04-08
Abstract: 918,661. Resilient mountings. GENERAL ELECTRIC CO. Ltd. March 29, 1961 [April 8, 1960], No. 12670/60. Class 108(3). An anti-vibration mounting, e.g. for resiliently supporting electronic equipment components on a structure subject to vibration, comprises two parts 1, 2 the part 1 being resilient and adapted to absorb vibration frequencies outside the band of resonant frequencies of the equipment carried by the mounting and the part 2 being such that it will not transmit a force of more than a certain value so that if the structure vibrates at, or near, the said band of resonant frequencies the part 2 serves to reduce the forces which would otherwise be exerted on the equipment. As shown the part 1 comprises a block 3 of rubber or like resilient material which is connected between a flange 4 on which the equipment is to be mounted and an intermediate flange 5. The part 2 comprises two interfitting cylinders 6, 7 having their mutually contacting surfaces covered with frictional material 8, the inner cylinder 6 having a flange 9 which is bolted to the flange 5 and the outer cylinder 7 being attached to a flange 10 for connection to the structure. The limiting force required to produce relative sliding between the cylinders 6. 7 is made variable by providing the cylinder with a number of axially extending slots 11 and encircling it with three circumferentiallyadjustable bands 12.
Patent GB-717578-A (GB)
Title: Improvements in and relating to suction cleaners
IPC: A47L5/24
Filed: 1951-05-30
Abstract: 717,578. Suction cleaners. FRANCE, A. May 29, 1952 [May 30, 1951], No. 12715/51. Classes 8 (1) and 8 (2). An electrically driven fan or blower suction cleaner held by a handgrip 2 has a detachable dust collecting receptacle 6 and a self-supporting flexible suction nozzle'having its stem 8 of relatively stiff construction terminating in a mouth 9 of greater flexibility or of thinner material and projecting from the fan or blower housing 1. The mouth 9 of the nozzle which is of rubber is adjustable relative to the housing 1 by means of a hand manipulated lever 13 pivoted to the grip 2. The motor may be reversed by a switch or the fan reversed by gearing to provide a reverse flow of air for cleaning the filter or blowing dust from the surface being cleaned e.g., an assortment of phials, bottles and jars.
Patent GB-1161368-A (GB)
Title: Process for the Production of Cross-Linked Synthetic Resins
Inventor: GROGLER GERHARD
IPC: C08G18/10
Filed: 1967-03-17
Abstract: 1,161,368. Coated sheet materials. FARBENFABRIKEN BAYER A.G. 17 March, 1967 [19 March, 1966], No. 12784/67. Heading B2E [Also in Division C3] Wood, leather, textiles, paper, cellulose, and metals may be coated with a solution in an inert organic solvent of a polymer prepared by reacting an isocyanate terminated prepolymer with an N-substituted ethylene imine, the N-substituent of whichcontains hydrogen atoms reactive with NCO groups, in an amount equivalent or slightly more than equivalent to the NCO groups and cross-linking this reaction product suitably by addition of an acid, an alkylating agent, a # - chloro ethyl urethane or simply by heating. In Examples (9 and 10), metal sheets are coated with a reaction product of prepolymer reacted with 1 -amino-3-ethyleneimino-propane in an organic solvent, which reaction product is cross-linked at 150 to 160C with simultaneous evaporation of the solvent.
Patent GB-794777-A (GB)
Title: Improvements in or relating to ferromagnetic ceramic materials
Inventor: GUILLAUD CHARLES LOUIS
IPC: C04B35/26
Filed: 1956-04-26
Abstract: 794,777. Magnetic compositions. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. April 26, 1956, No. 12795/56. Drawings to Specification. Class 38 (2). A ferromagnetic ceramic composition having a low temperature coefficient of initial permeability less than that of a manganese zinc ferrite of the same manganese content is made by compressing and sintering the mixture of ferric, manganese and zinc oxides, ferric oxide to the extent of 2.5 to 8 mol. per cent being replaced by chromium oxide. Suitable mol. proportions are ferric oxide 42-55¢, manganese oxide 21-38, chromium oxide 2.5-8 per cent, the remainder zinc oxide. The average temperature coefficient of initial permeability is not more than 0.1 per cent per degree C over the range - 40‹ to +80‹ C. for materials containing between 21 and 30 mol. per cent manganese oxide and not more than 0.2 per degree C over the range 0‹ to + 80‹ C. for materials containing 30-38 mol. per cent of manganese oxide. The compositions may be made by mixing together suitable proportions of oxides, or oxide-forming compounds, grinding in distilled water, for 24- 48 hours, drying, pressing at 5 metric tons/sq. cm., heating at 1250‹-1278‹ C. in nitrogen containing 1 per cent of oxygen. The ferrous oxide is obtained from some of the ferric oxide starting material during the process as explained in Specification 730,703. The initial permeability of compositions so obtained remains above 800 and the product QÁ above 80,000. The losses may be kept small by the presence of CaO which may be added as CaCO 3 , to the extent of 0.01 to 1 per cent by weight as explained in Specification 776,710. The production of material having properties inferior to the above, from the same starting materials, heated in air at 1350‹ C. for 2 hours, is described.
Patent GB-143712-A (GB)
Title: A new or improved memorandum tablet
IPC: B42D5/00
Filed: 1919-05-22
Abstract: 143,712. Crump, H. May 22, 1919. Attaching memorandum tablets to wearing-apparel. - A memorandum tablet 2 of leather, metal, or other suitable material is provided with grooved sides and bottom to receive a memorandum book, plate, cards or the like, and is attached to the inside of the sleeve of the user by elastic bands 3, loops on which are engaged over buttons 7 on a cloth strip 1 sewn inside the sleeve. The tablet is pulled down for use by a tab 5 and is held for writing thereon, and when released is returned by the bands. A pencil holder 4 may be attached.
Patent GB-1419011-A (GB)
Title: Control set for a current converter
IPC: H02M1/08
Filed: 1973-03-16
Abstract: 1419011 Sawtooth wave and pulse generators SIEMENS AG 16 March 1973 [16 March 1972] 12891/73 Heading H3T [Also in Division H2] In a control set, for a current converter, pulses for activating the rectifier elements of the current converter are derived, in dependence upon a controlled condition of the converter, from a sawtooth voltage, auxiliary pulses are generated in synchronism with the points of reversal of the sawtooth voltage and a logic circuit is provided responsive to the pulses for activating the rectifier elements and to the auxiliary pulses to ensure that only one pulse is present per cycle of the sawtooth voltage. As shown, the sawtooth voltage is generated by integrating at 18 the voltage at the slider of potentiometer 10 until a limit is reached, imposed by limit-value stages 22 or 23 the outputs of which change the state of a memory stage 26 so as to reverse the conductivity of FET switching transistors 12, 17 and thus change the direction of integration. The frequency of the sawtooth is adjustable by potentiometer 10 and the duration of the respective half cycles adjusted by potentiometer 29 or by further potentiometer (not shown) connected to the + input of limit-value stage 22. The frequency is made independent of the supply voltages by use of a common voltage-Ur for each potentiometer. An error voltage formed by comparing the output 1b of the bridge inverter 1 with a desired value, is fed to terminal 35 where it is amplified at 33. Potentiometers 38, 39 and diode 36, 37 provide upper and lower limits. The output of amplifier 33 is compared at 31 with the sawtooth and a rectangular wave is generated starting and finishing with the coincidence of the amplified error voltage Uv with respective half cycles of the sawtooth wave. This voltage is fed to NAND gates 8, 9, controlled by the output of memory 26 and arranged to set a further memory 5 so that only one pulse is supplied to the respective halves of the bridge inverter 1 per sawtooth cycle. This arrangement minimizes the possibility of production of spurious voltages due t'o sudden changes in error voltage during one half cycle of the sawtooth.
Patent GB-762065-A (GB)
Title: Child's push chair
IPC: A47D1/06
Filed: 1955-05-04
Abstract: 762,065. Push chairs. JENKINS, C. W. T., and JENKINS, T. H. May 4, 1955, No. 12900/55. Class 108(1). A push chair has a seat back 10 hinged to side frames 12 at points 11 which may be held in an inclined position, Fig. 1, by extended toggle links 14, 15. To raise the back from the inclined position the common pivot point 17 is first lifted to fold the links 14, 15, the back 10 is then moved forwardly to lie alongside the sides 12, and the folded links 14, 15 are then moved downwardly and backwardly to an overset locking position, Fig. 3, in which position the back is between the frames 12 and stops 18 on each link 14 engage the frames. Specification 762,047 is referred to.
Patent GB-669086-A (GB)
Title: Improvements in the manufacture of hosiery
IPC: D04B11/00
Filed: 1948-05-11
Abstract: 669,086. Knitting-machines. TECHNICAL TEXTILE. May 11, 1948 [May 14, 1947], No. 12947/48. Class 74 (ii). The cam 14 effecting the presser movements of the needles of a straight-bar machine is eccentrically mounted so that during couliering from one selvedge to the other the needles of the machine move towards and away from the throats of the jack sinkers so that the loop length of a stocking is longer at the selvedge than at the centre. Friction between the yarn and the needles and sinkers prevents removal of the unevenness of the loop length when the dividing sinkers are inserted, any undue tension merely flexing the needles. The splicing cam is similarly eccentrically mounted to provide variation in loop length during the knitting of the spliced area. The Specification as open to inspection under Sect. 91 comprises also an arrangement of curving the verge plate of a straight-bar machine thereby causing the sinkers to project on a curve so as to enable the variation in loop length to be achieved. Alternatively the needle bar may be curved. Also disclosed is an arrangement for raising and lowering the needle cylinder of a circular machine as it is rotated to enable the loop length to be varied. An outwardly stepped or tapered roller for taking up the fabric having longer loops at the selvedge than at the centre is also disclosed. This subject-matter does not appear in the Specification as accepted.
Patent GB-131634-A (GB)
IPC: B62B5/06
Abstract: 131,634. Jones, T. A., Baber, H., and Baber, W. June 28, 1918. Hand-trucks.-A truck for transporting bricks comprises a back board 4 mounted on a wheel axle 5 and pivoted to a frame 1 having handles 3 and legs 2. Bars 7 project from the back 4 and are adapted upon first lifting and then lowering the handles 3 to be engaged beneath and pick up a board 8 slightly raised from the ground and on which the bricks are placed. The inclination of the back 4 can be adjusted according to the person using the truck by bars 9 having holes 11 for a pin 10 which engages also in the frame 1.
Patent GB-404848-A (GB)
Title: Improved apparatus for inserting the drawer into the box shell in cigarette packing machines
IPC: B65B19/18
Filed: 1933-05-05
Abstract: 404,848. Picketing - machines. UNIVERSELLE CIGARETTENMASCHINENFABRIK J. C. MULLER & CO., 48, Zwickauer Strasse, Dresden, Germany. May 5, 1933, No. 13174. Convention date, May 6, 1932. [Class 94 (i).] A cigarette-packeting machine, in which a drawer is inserted into a shell, is arranged with a plurality of inserting devices adapted to act at different stages during the travel of the drawer and shell through the machine, and to insert the drawer by a considerable and substantially equal amount each time. An open drawer 1, Fig. 1, charged with cigarettes, is fed by pushers 4 on an endless chain 2 past a folder 3 which turns down the open tab. It is brought to rest at position 1a by a guide 7 in front of a shell H which has been forced on to spring guides 15-18 by a pusher 9 on a chain 8. A plunger 22 forces the drawer partly into the shell and the guides are withdrawn. In order to effect this, the springs 17, 18, Fig. 3, are mounted on a frame 13 on a slide 19 movable in guides 19a away from the shell, and the springs 15, 16 are carried by a slide 12 vertically movable in the frame 13 to permit further movement of the shell with the drawer partially inserted therein. Pushers 27 on a chain 26 now move the shell along guides 50 into position between plates 28, which move towards each other and complete the insertion. The completed packet passes away between guides 58. The number of operations may be increased, e.g. the drawer may be only one-third inserted by the plunger 22 and completion may take place in two further stages.
Patent GB-684176-A (GB)
Title: Driving arrangement for ships
IPC: B63H11/04
Filed: 1950-05-25
Abstract: 684,176. Propelling ships. LANG, T. May 25, 1950. No. 13719/50. Class 114. A ship is propelled by water jets from pipes 6, 7, the water for these being drawn from an inlet 5 by pumps 3, 4 each driven by separate turbines 2, 2a. Branch pipes 10, 11, controlled by valves 8, 9 are provided for steering, and forwardly directed pipes 13, 14 for going astern.
Patent GB-1293031-A (GB)
Title: Lead alloys having improved corrosion resistance
IPC: C22C11/00
Filed: 1970-03-19
Abstract: 1293031 Lead based alloys BADISCHE ANILIN & SODA FABRIK A G 19 March 1970 [20 March 1969] 13221/70 Heading C7A A lead base alloy consists of 0À05-0À2% by weight palladium, one or more incidental elements known when used in lead alloys to reduce grain size, assist the formation of a protective layer, and/or increase creep resistance, said incidental element(s) being present in minor amounts known to be effective in lead alloys for the said purpose, the balance of the alloy being lead. Said element(s) may be in per cent by weight: Cu 0À05-0À15 or Cu 0À05-0À15 plus Sn 0À1-0À15 or Ni 0À05-0À15 plus Sn 0À1-0À15 or Te 0À05-0À15 plus Sn 0À1-0À15 The alloys may be used to construct chemical apparatus and are particularly resistant to boiling sulphuric acid.
Patent GB-1489174-A (GB)
Title: Process for preparing tetra-fluoroethylene hexafluoropropylene copolymer blends
IPC: B29B15/00
Filed: 1976-04-01
Abstract: 1489174 Fluoropolymer blends E I DU POND DE NEMOURS & CO 1 April 1976 [3 April 1975] 13270/76 Heading C3P A blend of copolymers of tetrafluoroethylene with 6À75-27% wt. hexafluoropropylene is obtained by separately treating in air containing 3-20% wt. water at 340-380‹ C. to remove volatiles (a) at least one copolymer of melt viscosity at 372‹ C. 13 x 10<SP>4</SP>-50 Î 10<SP>4</SP> poises, (b) at least one copolymer of melt viscosity 1 x 10<SP>4</SP>-5 Î 10<SP>4</SP> poises and optionally at least one copolymer of melt viscosity 5 Î 10<SP>4</SP>- 13 Î 10<SP>4</SP> poises and thereafter blending (a), (b) and optionally (c) to obtain a blend of melt viscosity 5 Î 10<SP>4</SP>-13 x 10<SP>4</SP> poises.
Patent GB-133181-A (GB)
IPC: H01J21/02
Abstract: 133,181. Edison Swan Electric Co., and Hiatt, C. E. Oct. 14, 1918. Vacuum tubes.-The grid 5 and anode 6 of a vacuum tube for use in wireless systems consist of wires stretched across the tube and anchored into the wall by fusion of the glass. The filament 2 is sup ported on arms 3 mounted in a stem 4.
Patent GB-1391795-A (GB)
Title: Random access data stores
IPC: G11C11/06
Filed: 1972-03-22
Abstract: 1391795 Store selector circuit monitoring SIEMENS AG 22 March 1972 [30 March 1971] 13322/72 Addition to 1309576 Heading G4C The arrangement of the parent Specification 1,309,576 is modified in that the store selector circuits are arranged in rows and columns in a matrix, and that a monitoring circuit is provided for each row and column, a row and column monitoring circuit SG being selected in each operating cycle of the store in accordance with the selected selector circuit. Each monitoring circuit is as described in the parent Specification 1,309,576. If in operation a single selector circuit is continuously called by address signals E1-E4, a corresponding row and column monitoring circuit is selected by address decoders DNp, DNg. Eventually both monitoring circuits will produce an output indicating overload and AND gate UG will produce an output blocking further access unless a different selector circuit is addressed.
Patent GB-1256202-A (GB)
Title: A method of producing alkyladamantanes
IPC: C07C5/29
Filed: 1970-03-19
Abstract: 1,256,202. Alkyl adamantanes. INSTITUT NEFTEKHIMICHESKOGO SINTEZA IMENI A.V. TOPCHIEVA AKADEMII NAUK. 19 March, 1970, No. 13387/70. Heading C5E. Alkyladamantanes are produced by isomerizing a tricyclic saturated condensed hydrocarbon of more than 10 carbon atoms at 180-320‹ C. with a solid catalyst comprising an oxide of Group III or IV element treated with a mineral acid or with a catalyst comprising an aluminium silicate. The preferred catalysts are Al 2 O 3  or SiO 2  treated with H 2 SO 4  or HF. Examples describe the preparation of dimethyl- and ethyl-adamantanes from perhydro-acenaphthene; tri-methyl- and ethyl, methyl adamantanes from perhydrofluorene; and tetramethyl- and ethyl, dimethyl adamantanes from perhydroanthracene.
Patent GB-601317-A (GB)
Title: Improved process for the production of rubber-like copolymers
IPC: C08F220/14
Filed: 1945-05-29
Abstract: Inert rubbery materials are obtained by copolymerizing a major proportion of methyl acrylate with a minor proportion, preferably below 20 per cent, of a hydrocarbon or substituted hydrocarbon containing at least two aliphatic double bonds at elevated temperatures in the presence of an oxygen-yielding catalyst and heating the copolymer formed with a curing agent, preferably sulphur. Specified unsaturated compounds are diallyl benzene, allyl acetal, dimethallyl, allyl acrylate, allyl maleate and 2.3-dichlorbutadiene-1.3.  Preferably copolymerization is carried out at 100 DEG  C. and in aqueous emulsion.  Specified catalysts are benzoyl peroxide and ammonium persulphate.  Preferably, the copolymer is hot-milled before incorporation of the curing agent. Whilst sulphur is the preferred curing agent (employed together with tetramethyl thiuram disulphide with or without fillers, e.g. carbon black, zinc oxide) other curing agents listed include sulphur halides, p-quinone dioxime and aromatic nitroso compounds.
Patent GB-349983-A (GB)
Title: Improvements in photographic printing apparatus
IPC: G03B27/80
Filed: 1930-01-25
Abstract: 349,983. Photographic printing apparatus; photometric apparatus. HILGER, Ltd., A., TWYMAN, F., SMITH, C. F., 24, Rochester Place, Camden Road, and FOLLETT. D. H., 35, Dorset Road, Merton Park, both in London. Jan. 25, 1930, Nos. 13489 /31 and 13490/31. Divided on 349,907. [Classes 97 (i) and 98 (i).] Photographic printing apparatus in which automatic means are provided to terminate the exposure when a definite quantum of light has passed through the negative, has means for feeding a fresh printing surface into position each time the exposure of the previous surface is completed. The exposure terminating means may be of the form described in Specification 344,900, in which a light-sensitive cell is arranged in circuit with a condenser and a relay. In the form of machine shown, sensitive paper is drawn from a roll 46 across an exposure opening 48 by driving rollers 52, 53. The rollers are driven by a gear 54 on which a ratchet 56 is mounted which is engaged by a pawl 58 on a lever 59 intermittently reciprocated by a rocker arm 62 operated by a cam 64 on the shaft 66. This shaft is driven through a clutch 69, closed by an electromagnet 72, from a continuously running motor 71. The lever 59 is adjustable in a slot 63 in the rocker arm 62. The negative is held in a gate 21 in a diffusing box 18, light passing through the negative being reflected from a mirror 23, through a lens 24 and shutter 25 to the sensitive surface. The light-sensitive cell (not shown) is illuminated by diffused light from the negative, a compensating cell 12 being also provided, directly illuminated by the source of light. In operation contacts 87, 88 are closed by the shaft 66, energizing an electromagnet 31, Fig. 3, which opens the shutter 25 and breaks a contact 42 in the circuit of the electromagnet 72 causing the clutch 69 to open and stopping the shaft 66. A contact 40 is also opened starting the exposure timing device which at the end of the exposure operates a relay energizing the electromagnet 92 which closes the shutter 25 and the contact 42, clutch 69 being thereby reengaged. In a modification the light source, lens and sensitive surface are arranged on a vertical axis. One form of circuit of the electric timing means suitable for use with direct current mains is shown in Fig. 7. Specification 349,907 also is referred to.