baber/WOPTO huggingface dataset:
Patent GB-692180-A (GB)
Title: Pulse generator
IPC: H02K3/00
Filed: 1947-12-11
Abstract: 692,180. Pulse circuits. HAZELTINE CORPORATION. Dec. 11, 1947 [Dec. 19, 1946], No. 32709/47. Class 40 (vi). In a circuit for generating a predetermined number of equal duration and equally-spaced pulses an input pulse produces a first pulse and a first control potential of longer duration than this first pulse and second control potentials are also produced at predetermined times and of shorter durations than the first control potential, the two control potentials generating a series of output pulses during their coincidence. Fig. 1 shows a circuit for radiating a train of pulsemodulated R.F. oscillations in response to an input pulse. The positive input pulse at 30 renders valve 31 conductive and the negative output pulse at its anode changes over the flip-flop comprising valves 19, 20 and produces a long positive pulse at its anode. This is differentiated by network 40, 41 and the positive pulse renders valve 39 conductive, the negative pulse at its anode triggering the blocking oscillator 12 which generates a positive going output pulse having a duration determined by twice the delay of the open-circuited line 13. The output pulse from the blocking oscillator is amplified by stage 17 and pulses the R.F. oscillator stage comprising valve 66 and is also applied to the delay line 43. Valve 51 which is normally cut-off is rendered conducting during the coincidence of the positive pulse from the flip-flop 19, 20 and the positive pulse from the delay line 43 to produce a negative pulse at its anode which triggers the blocking oscillator 12 to produce a further pulse. Thus a succession of pulses are produced, the duration of each being determined by the delay line 13, the interval between the leading edges and the overall period during which they persist being determined by the delay line 43 and the setting of capacitor 27 respectively.
Patent GB-1275217-A (GB)
Title: Process and apparatus for making carbon dioxide snow
Inventor: TYREE LEWIS JR
IPC: C01B32/55
Filed: 1970-07-07
Abstract: 1275217 Production of carbon dioxide snow L TYREE JNR 7 July 1970 [18 July 1969] 32825/70 Heading F4P Cold liquid carbon dioxide is expanded through a tangential nozzle 25 into the upper end of a vertical tube 45 thereby creating a mixture of snow and gas which is separated by centrifugal action; the gas being withdrawn through a coaxial tubular outlet 27 whilst the snow is accumulated at the lower closed and flared end of the tube 45, and is intermittently removed, e.g. by a ram 15 which in its retracted position closes the tube 45. The liquid feed delivered from a storage container is cooled by passage through a coil 65 surrounding tube 45 and is further cooled by an external refrigerator before being expanded at 25. Vent gas is recompressed and reliquefied and returned to the storage container.
Patent GB-1387557-A (GB)
Title: Die boxes for drawing and ironing dies
IPC: B21C3/02
Filed: 1973-07-10
Abstract: 1387557 Cupping NATIONAL CAN CORP 10 July 1973 [4 Aug 1972] 32870/73 Heading B3Q A die box comprises cradle members 38, 40 against which a drawing or ironing die 34 is secured by a clamp 36, means attached to both members 38, 40 and extending outside the box to move the members in tandem and further means extending outside the box for moving the members relatively to one another. A shaft 60 has screwthreads 56, 58 of opposite bands for respectively engaging the cradle members 38, 40 so that rotation of the shaft by a knob 32 increases or reduces their spacings and thus changes the vertical position of the die. The shaft is moved axially by turning an externally threaded knob 30 so as to change the lateral position of the members 38, 40. A number of dies having handles 52 may be clamped in the same block by pneumatically operated pistons 42. Location of the cradle members is facilitated by a dummy die ring (not shown) having apertures in its bore which are in separate communication with an air supply. With a punch on the bore, the bore is concentric with the punch when the flow through the apertures is equalized.
Patent GB-941670-A (GB)
Title: Improvements relating to fanlights
IPC: E05D15/52
Filed: 1960-09-26
Abstract: 941,670. Operating mechanism for fanlights. W. WEBER. Sept. 26, 1960 [Sept. 24, 1959], No. 33009/60. Addition to 931,713. Heading E2M. The opening and closing mechanism claimed in the parent Specification for a fanlight which can be tilted about its lower edge or pivoted about a side edge for cleaning purposes, is improved by the inclusion of means whereby the pushout arm which is connected between the wing of the window and the operating mechanism may be automatically disengaged from the mechanism in the closed but unlocked position of the window. A pin 88 on the end of pushout arm 83 engages between two pins 89, 90 on a member 91 which is attached by angular lugs 92 to a set of operating cables 93, 94 which run in recesses in the fixed frame to an operating handle 97. The path of travel of the pins is covered by a U-shaped guide casing 102 formed with a slot 103. In the closed but unlocked position of the widow pin 88 is positioned adjacent slot 103. In this position the window may be pivoted about its right side edge by release of the pin of hinge 4 and during this movement pin 81 moves out of engagement with pins 89, 90 of the operating mechanism. Buttons 104 attached to the operating cables engage locking clasps 105 in the closed and locked position of the mechanism.
Patent GB-1527787-A (GB)
Title: Light generation by an electrodeless fluorescent lamp
IPC: H05B41/24
Filed: 1976-08-09
Abstract: 1527787 Metal vapour lamps D D HOLLISTER 9 Aug 1976 [13 Aug 1975] 33054/76 Heading H1D To operate an electrodeless discharge lamp an ionizable medium, e.g. Hg+1-5 torr Ar, is exposed to an RF field of 3-300 MHz, an electric field starting the lamp and the RF magnetic field maintaining the discharge; both fields may be produced by an RF coil near the envelope of the lamp; the frequency and field strength are chosen for maximum conversion efficiency (Figs. 5, 6, not shown) depending on the nature and pressure of the gas, by ensuring that free electrons reach ionizing velocity in travelling one mean free path in a time equal to a quarter period of the RF. The coil is wound on a non-magnetic insulating former, for example 18 inserted inside inner sleeve 11 of a double envelope 10, the conductor 20 from the top running back axially to the base 19 where a supply rectifier and RF oscillator (Fig. 3, not shown) convert A.C. applied to contacts 21, 22. By using a tapped coil and selected self capacitances of the transistor the circuit may be simplified (Fig. 4, not shown). The central sleeve 11 may carry a coating 12 reflective to UV and visible light, the entire envelope being subsequently internally coated with a phosphor 13, 14 to convert Hg emission of UV to white light. Tubular fluorescent lamps with failed heaters may be energized by coils round their tubes.
Patent GB-1507135-A (GB)
Title: Gas laser generator
IPC: H01S3/097
Filed: 1976-08-09
Abstract: 1507135 Gas lasers SOC GENERALE D'ELECTRICITE SA 9 Aug 1976 [21 Aug 1975] 33069/76 Heading H1C A gas laser has the active medium contained in a tube 11 between electrodes 12, 13 which are themselves located between two part-parabolic transmission lines 1, 2. Each pumping gas discharge is initiated by a voltage pulse applied at the common focus 20.
Patent GB-321559-A (GB)
Title: Improvements relating to racks or shelves for use with cooking apparatus
IPC: F24C15/12
Filed: 1928-11-12
Abstract: 321,559. Radiation, Ltd., Davis, H. N., and Twigg, W. R. Nov. 12, 1928. Folding bracks. - A hinged rack or shelf a for use on gas cookers or other cooking apparatus is provided at each end with cranked arms b each having an inward projection c engaging a vertical abutment f formed on the corresponding supporting standard d. When the shelf is horizontal, Fig. 2, it is supported by the projection c engaging the top of the abutment f, by one limb of the arm b resting on a horizontal ledge h, and by stops j which contact with the rear of the shelf. When the shelf is moved to the out-of-use position shown in Fig. 3 the projection c slides down the abutment f and finally engages in a recess g at the lower end, whilst the other limb of the arm b comes to rest on the ledge h. The projection c may be replaced by a rod joining the two arms b. When the part a is in the form of a rack a supplementary flat shelf k may be pivoted to it.
Patent GB-1404521-A (GB)
Title: Bulbous bow of a ship
IPC: B63B1/06
Filed: 1973-07-11
Abstract: 1404521 Bulbous bows STOCZNIA SZCZECINSKA IM ADOLFA WARSKIEGO 11 July 1973 [13 July 1972] 33100/73 Heading B7A The bulb of a ship's bulbous bow comprises a fixed part 1, a movable streamlined part 2 and power means 3 by which the part 2 is moved to alter the geometry of the bow to suit various draught and or speed conditions. The movable part 2 may comprise three interconnected components (Figs. 4 and 5, not shown).
Patent GB-488282-A (GB)
Title: Improvements in or relating to steering gears
IPC: B62D3/10
Filed: 1936-12-02
Abstract: 488,282. Worm gearing. JACKSON, L. MELLERSH-. (Gemmer Manufacturing Co.) Dec. 2, 1936, No. 33105. [Class 80 (i)] In a steering-gear comprising a housing A carrying a rock-shaft C on which is a worm gear E engaging a worm F mounted on the steering stem B, means are provided for adjusting the worm relatively to the worm gear. The worm has conical extensions F<1>, F<2> forming the inner races of roller bearings G, the outer races being formed by bevelled portions of the inner surfaces of sleeves H the inner surfaces being eccentric to the outer surfaces which are rotatable in bearings I, I<1> in the housing A. Each sleeve has, formed on a portion of its outer surface, gear segments, with which engage pinions J, J<1> on a shaft K rotatable through a polygonal head L and provided with a lock nut N. A cap P closes an opening through which the worm and roller bearings are inserted, and another cap is provided on the side for insertion of the rock-shaft and worm gear.
Patent GB-1087178-A (GB)
Title: Method of and means for constructing manholes
IPC: B65D90/10
Filed: 1965-08-04
Abstract: 1,087,178. Lining manholes. A. J. BISHOP. May 18, 1966 [Aug. 4, 1965], No. 33287/65. Heading E1S.  Manholes are lined with concrete 2 by means of an inner complete removable shuttering A and an outer partial shuttering B, which is initially placed at the bottom of the manhole. Back-filling M is filled into the space between the shuttering B and the sides of the excavation and then concrete is filled into the space between the .shutterings A and B. The lining is completed by raising the shuttering B in a series of steps and filling in back-filling and concrete at each step. The upper part of the lining is tapered at one side by providing correspondingly tapered shuttering. The shuttering B has radial fingers to hold it at the correct distance from the shuttering A and handles . 'for lifting.
Patent GB-1241945-A (GB)
Title: Sealed, packed articles
Inventor: HOUGH GERALD WILLIAM
IPC: A61B19/02
Filed: 1967-07-20
Abstract: 1,241,945. Packaging. SMITH & NEPHEW RESEARCH Ltd. 19 July, 1968 [20 July, 19671, No. 33293/67. Heading B8C. An article is packaged by placing it inside or on a polyethylene bag 2, folding the bag about a line 7, and sealing the edges of the bag mouth 6 to each other and to the lower edge of the bag outside the bag lower seal 4. If the article is placed on the bag, side seals are also made. After the package has been opened, the bag 2 may be used for the disposal of the used article. The bag may, as illustrated, be formed of two sheets sealed together, or, where the article is to be placed in the bag, may be a tube sealed at one end. The bag may have an adhesive surface for suspending it while it is being used for disposal, and the package may include a length of wire for closing the bag after disposal. The article may be a hospital pack.
Patent GB-619507-A (GB)
Title: Improvements in and relating to the manufacture of products adapted for use in colour photography and of photographic images in colour
IPC: G03C7/36
Filed: 1945-12-11
Abstract: Bis - (isatin - b  - cyanacetylhydrazone-5) - methane is prepared by boiling together in aqueous solution chloral hydrate, sodium sulphate, p : p1-diaminodiphenylmethane, hydrochloric acid, and hydroxylamine hydrochloride, adding the reaction product slowly to concentrated sulphuric acid heated to 50 DEG  C. and pouring on to cracked ice, and reacting the product with cyanacetylhydrazide in alcohol containing concentrated sulphuric acid. Bis-(7-methylisatin-b -cyanacetylhydrazone-5)-methane is similarly prepared.  Similar derivatives may be obtained starting from p : p1-diaminodiphenyl ether, para-leucaniline, 4 : 41-diaminotriphenylmethane and p : p1-diaminodibenzyl ether.  p : p1-Diaminodibenzyl ether is prepared by heating p-nitrobenzyl alcohol with dilute sulphuric acid and reducing with tin and concentrated HC1.ALSO:Bis - (isatin - b  - (p - diethylaminoanil) - 5) - methane is prepared by boiling together in aqueous solution chloral hydrate, sodium sulphate, diaminodiphenylmethane, hydrochloric acid, and hydroxylamine hydrochloride, adding the reaction product slowly to concentrated hydrochloric acid heated to 50 DEG  C. and pouring in to cracked ice, and heating the product with a suspension of N : N-diethyl-p-phenylenediamine in alcohol, sodium acetate being added. Similar dyes may be obtained, starting from p : p1 - diaminodiphenylethane, p : p1-diaminodiphenylene oxide, ethylene p : p1-diaminodiphenyl ether, para-leucaniline, 4 : 41-diaminotriphenylmethane, and p : p1-diaminodibenzyl ether.
Patent GB-610335-A (GB)
Title: Improvements in and relating to equipment for the drying of clothes and other articles
IPC: A47G25/06
Filed: 1945-12-11
Abstract: 610,335. Clothes airers. SUTHERLAND, B. A. Dec. 11, 1945, No. 33482. [Class 52(v)] A clothes airer or drier comprises a main supporting rack 2 carried by and adapted to fold about a horizontal axis adjacent one edge of a support 1 fixed to the wall or the like and to be enclosed by a cover 9 also hinged to the support. Two auxiliary racks 6, 7 hinged one at each side of the main rack carry laterally projecting supports 8. The rack 2 is provided with spiral or plain wire " lines " 4, or rods, on which pegs 5 may be mounted.
Patent GB-390885-A (GB)
Title: Improvements in or relating to induction electricity meters
IPC: G01R11/185
Filed: 1931-12-04
Abstract: 390,885. Compensating meters for temperature errors. FERRANTI, Ltd. and CLIFFORD, C. F., Hollinwood, Lancashire. Dec. 4, 1931, No. 33649. [Class 37.] An induction-type electricity meter is compensated for temperature errors by incorporating in the series magnet core, parts e formed of magnetically conductive material having a high negative permeability-temperature coefficient and constituting part of the cross section of a considerable length'of the series magnet core limb, a portion of both the driving shunt 'and series fluxes traversing the parts e. The other portion of the driving fluxes traverses integral inverted' L-shape parts d of the normal core-material. The parts e are moulded into the insulation of the current winding spools.
Patent GB-427458-A (GB)
Title: Improvements in processes for the electrolytic deposition of cobalt
IPC: C25D3/12
Filed: 1934-11-23
Abstract: 427,458. Electrodeposition of cobalt. BERGER, H. M. J., 8, Rue Petit, Clichy, Seine, France. Nov. 23, 1934, No. 33697. [Class 41] A cobalt-plating bath contains cobalt chloride, alkali metal or ammonium bifluoride and an alkali metal or ammonium chloride. Cobalt acetate may also be present. A suitable composition is crystallised cobalt chloride 40-150 gms., alkali metal or ammonium bifluoride 10-40 gms., ammonium chloride 15-60 gms. and cobalt acetate 15-60 gms. to 1 litre of water. Boric acid and the usual " glossing agents " may be added.
Patent GB-393595-A (GB)
Title: Improvements in or relating to radio direction finding apparatus
IPC: F42B19/10
Filed: 1931-12-04
Abstract: 393,595. Directive wireless signalling. HARDY, R. J. and SOC. DES ETABLISSEMENTS H. LEPAUTE, 19, Rue Desnouettes, Paris. Dec. 4, 1931, No. 33707. Convention date, Dec. 4, 1930. [Class 40 (v).] Relates to direction-finding apparatus of the kind in which a stroboscopic device rotates synchronously with a group of two mutually perpendicular frame aerials or goniometer coils, the stroboscopic device being illuminated by the amplified current therefrom and comprises controlling two lamps, one of which indicates the direction of the transmitting station and the other of which removes the 180 ambiguity. As described, two mutually perpendicular loop aerials 1, 2, Fig. 6, earthed at their centre points feed mutually perpendicular coils 71, 72 the circuits being tuned by ganger condensers 60, 70. Inside the coils 71, 72 is arranged a pair of mutually perpendicular coils 73 arranged for rotation about a shaft 74 and tuned by a double condenser arrangement 82 whose centre point is connected through a condenser 83 to earth, the centre point of the coils 73 being earthed through a variable resistance 81. The coils are connected differentially to the input of a superheterodyne receiver comprising H.F. amplifiers 85, 86, local oscillator 88, frequencychanger 91 comprising three grids, one a space charge grid, the others receiving the signals and local oscillations respectively, and I.F. amplifiers 95, 96, 97 followed by two output valves 100, 105. In the grid circuit of valve 100 is a rectifier 101 and in the plate circuit a neon tube 77 which lights only in the absence of any rectified potentials on the grid. The valve 105 is arranged as a rectifier and a neon tube 78 connected by leads 108 in its plate circuit lights up only if the amplitude of the grid potentials is above a predetermined value. The neon tubes either illuminate a pointer 75 attached to and rotating with the shaft 74 and co-operating with a fixed scale 76 or are attached to the shaft and arranged to rotate under a fixed transparent scale, Fig. 3 (not shown). The tube 77 indicates the direction 131, Fig. 9, of the incoming signals, with an ambiguity of 180 by flashing for a short period at positions 154 and 155, Fig. 9, during rotation of the search coils. The tube 78 removes the ambiguity by flashing for longer periods at positions 156, 157, thus showing which of the positions 154, 155 is the true bearing.
Patent GB-194784-A (GB)
Title: Improvements in means for securing the bearings for the change-wheels of lathes
IPC: B23Q5/14
Filed: 1921-12-16
Abstract: 194,784. Smith, A. Dec. 16, 1921. Driving machines. - The quadrant plate b for supporting the change wheels of lathes is clamped by a nut c against a spacing sleeve 3 secured to the frame at 4 and fitting over the hexagonal portion g of the usual fixed stud 2.
Patent GB-1031447-A (GB)
Title: Improvement in and relating to signal amplifiers
IPC: H03F3/32
Filed: 1964-08-19
Abstract: 1,031,447. Paraphase amplifiers. TEKTRONIX Inc. Aug. 19, 1964 [Aug. 19, 1963], No. 33899/64. Headings H3T and H3W. A paraphase amplifier giving a push-pull output from a single input by means of two transistors or tubes connected by a variable resistance between their emitters or cathodes has the range of gain control without unbalance increased by shunting the base/collector or grid/anode of the input transistor or tube with a resistance approximately equal to its emitter or cathode bias resistance. In Fig. 1, a paraphase amplifier has gain control effective by altering the resistance between the emitters of the two transistors, the range of control being increased by the addition of resistor 42. This resistor is of approximately the same value as the emitter bias resistance 30 and is adjusted so that when the network 14 is open-circuited the output at 38 is zero for all values of the input at 36. The operating points of the two transistors are preferably balanced by including a further resistor 44 equal to the emitter bias resistor 32; this may or may not be equal to resistor 30. A single variable resistor may be used to couple the emitters instead of the network 14. The load resistors 26, 28 should be lower in value than the shunt resistors 42, 44. The two transistors can have different supply voltages. Fig. 2 (not shown) describes an equivalent circuit using triode tubes.
Patent GB-491953-A (GB)
Title: Improvements in the method of and apparatus for refuelling aircraft in the air
IPC: B64D39/06
Filed: 1936-12-10
Abstract: 491,953. Refuelling aircraft in flight. COBHAM, SIR A.J., JOHNSON,H.C., ALLISON, P. R., and FLIGHT REFUELLING, Ltd. Dec. 10, 1936, Nos. 33975/36, 9493/37, and 22737 /37. [Class 4] [Also in Group XXVIII] A refuelling hose 11 depending from a tanker aircraft is connected to the fuel tank of a receiving aircraft by a ball-and-socket coupling, the component parts 13, 17 of which are clamped together by a device which is manually releasable and is also adapted readily to yield and permit release and separation of the coupling parts when an abnormal pull is exerted by the hose in an axial direction or in any direction inclined thereto within a substantial range of inclination. Fig. 1 shows the socket part 13 on the receiving aircraft and the ball part 17 on the hose 11, the socket being provided with a rubber ring 35 for securing fluid-tightness in the coupling and with a plurality of clamping rollers &c. 24 for engagement with a cam surface 25 on the ball, and the ball locating a spring-pressed valve 18 provided with a stem 16 having a head 23 for engagement by a cable 10 in the receiving aircraft by which the hose is pulled across from the tanker.- The rollers 24, which are normally retained in a retracted position by springs 26, are adapted to be forced inwardly by bell-crank levers 33, upon actuation of a lever 27 which is connected thereto by cables 32, and to be locked in this position by the engagement of an extension 29 of the lever 27 with a spring-pressed stop 28, the spring 40 of the latter permitting release of the lever 27 and the clamping rollers should there be a sudden pull on the hose. The construction is such that, upon pulling the cable 10, the ball will be forced into the socket until the head 23 of the valve stem 16 engages the centre boss 14 of a spider in the latter, whereupon the lever 27 is actuated to effect engagement of the rollers 24 with the cam surface 25 and cause the ball to be pressed into fluid-tight engagement with the socket, simultaneously opening the valve 18. The cable 10 mav be attached to a short length of cable secured to a spider (not shown) on the hose side of the ball spider 20, so that the ball will be drawn by the cable into complete engagement with the socket, the rollers acting as mere locking members ; further, the valve 18 may be dispensed with. In a modification, Fig. 3, the ball is made in two parts 41, 47 with interposed springs 42, in which case the front part 41 is drawn by the cable 10 fully home into the socket and the clamping rollers are then actuated to force the rear part 47 forwardly relatively to the valve 18 and the front part, thereby compressing the springs 42 and opening said valve 18. Fig. 7 shows a further construction in which the ball part is located on the receiving aircraft, and the socket part, which is provided with a thin metallic cup 57, on the hose. Modified clamping devices are also described in the Specification. Specifications 369,228 and 432,908 are referred to.