baber/WOPTO huggingface dataset:
Patent GB-687937-A (GB)
Title: Improvements in or relating to extrusion presses for manufacturing tubing
IPC: B21C25/06
Filed: 1949-10-05
Abstract: 687,937. Extruding. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., and FRY, F. H. Jan. 4, 1951 [Oct. 5, 1949], No. 25617/49. Class 83 (iv). [Also in Group V] A press for extruding tubing such as electric cable sheathing, of metal or other material, has the die or hollow mandrel eccentrically mounted in a sleeve eccentrically mounted in the machine frame so that by rotation of the two parts the axes of the die and mandrel may be adjusted laterally to compensate for uneven pressures &c. and so maintain the inner and outer walls of the tube concentric. A cable is pulled through a hollow mandrel 1 in an extrusion press and covered with a fluid material from an annular space 2 surrounding the mandrel. The material is extruded on to he cable through an annular space 3 between the tip of the mandrel and the orifice of a die 4. The die holder 5 has a cylindrical peripheral surface which is eccentric to the die axis and is rotatable in a die holder ring 6. The external cylindrical surface of the ring 6 is eccentric with respect to its internal surface and is rotatable in a mounting unit 7 on the press frame. The die holder ring 6 and the die holder 5 are located axially by an annular shoulder 8 on the unit 7 and a sleeve 9. The die setting is adjusted by removing the sleeve 9 and rotating the die holder and the ring by inserting a tool in recesses (not shown). Alternatively, the holder and the ring may have sleeves with extending arms for making this adjustment. For forming tubing of non-circular cross section the die is arranged to turn with respect to the die holder so that, when the die axis is moved, the die may be retained in the same angular position about that axis.
Patent GB-750770-A (GB)
Title: Improvements in or relating to smokers' ash-trays
IPC: A24F19/04
Filed: 1954-09-03
Abstract: 750,770. Smokers' ash-trays. ERHARD & SOHNE GES. Sept. 3, 1954 [Sept. 3, 1953], No. 25619/54. Class 130. To allow initial opening movement without rotation of an ash-tray lid 8 which is operated by a screw 7 to rotate when a handle 6 is depressed to open the lid, the nut 9 in which the screw 7 works either has a limited sliding movement on axial flutes 11 or limited rotation relative to a stop co-acting with a cut-out in the nut. Cigar &c. rests are provided in a bridge piece 4 supporting the lid assembly.
Patent GB-518780-A (GB)
Title: Method for the recovery of a high-grade crude product from enriched benzole waste-oil
IPC: C10C1/10
Filed: 1938-09-02
Abstract: 518,780. Distilling wash oil. KOPPER'S INDUSTRIEELE MAATSCHAPPIJ N.V., H Sept. 2, 1938, No. 25746. Convention date, Sept. 2, 1937. [Class 32] In the distillation of wash oil used for washing coal gas to recover benzol therefrom, the wash oil is preheated to 130-140‹C. indirectly in a heat exchanger to remove low boiling constituents before passing to the main distilling column where it is distilled with steam. The crude oil is passed through a pipe 1 into a heat exchanger 2 heated by steam pipes 3 and then flows through pipe 8 into a still 9 heated directly by steam admitted through line 10. The vapours evolved in the heat exchanger 2 after passage through a dephlegmator 7 are mixed with the vapours passing from the still in a line 12 and the mixed vapours passed through a condenser 13, the condensate being collected in separator 15, where water is separated and discharged through pipe 16. The benzol is collected in a separator 18 from which a portion is recycled through lines 20, 22 to the still and dephlegmator as reflux.
Patent GB-1347895-A (GB)
Title: Electrolytic timers
IPC: G07C3/02
Filed: 1971-04-19
Abstract: 1347895 Elapsed time indicators JAPAN RADIO CO Ltd 19 April 1971 [31 March 1970 9 Nov 1970] 25791/71 Heading G3T An electrolytic elapsed time indicator comprises an anode formed by welding together metallic elements 2 and 1, and a cathode 4 housed in an envelope 5 (of glass or an organic macro-molecular material e.g. polyethylene) containing an electrolytic solution. The electrolysis of the anode element 2 precedes that of anode element 1. Thus when the electrolysis of element 2 is completed at the end of a predetermined elapsed time, electrolysis of element 1 begins and produces a colour change in the electrolyte and proceeds until the electrolyte is saturated with colour changing metal complex ions. The electrolyte may contain a ligand in the form of a salt of the metal of element 2 to produce a deep colouring of the elctrolyte by reacting with metal ions produced in the electrolyte during the electrolysis of the colour changing anode element 1. Alternatively, in a 2nd embodiment, the main constituent of the electrolyte is a salt of the metal of element 2 e.g. zinc sulphate and a discolouring agent (e.g. salicylic acid or nitrose-R-salt) may be added, which agent reacts with the metal ions of the colouring anode element 1.  A bubble 9 of air at 1 atm. or gas such as nitrogen, or foamed polystyrene, serves to inhibit increase in internal pressure of the envelope. Constituents of 1st embodiment: - Anode element 2 - cadmium, " " 1 - cobalt, Cathode element 4 - silver plated nickel wire, Electrolyte - ammonium thiocynate, cadmium oxide, water and auxochromic agent such as acetone, methanol, ethanol or ether to promote colouring. Constituents of 2nd embodiment: - Anode element 2 - zinc " " 1 - cobalt Cathode element 4 - nickel Electrolyte - zinc sulphate, magnesium sulphate, aluminium sulphate, boric acid, water & discolouring agent nitrose R salt. The time measuring anode element 2 may alternatively be of tin, iron, nickel or copper and the colouring anode element 1 may be copper, silver iron or manganese.
Patent GB-932767-A (GB)
Title: Improvements in or relating to apparatus for effecting safety measures in the event of fire or other emergency
Inventor: HOAR ROGER CARL
IPC: H01H37/76
Filed: 1960-07-25
Abstract: 932,767. Fire alarms. R. F. LANDON & PARTNERS Ltd. June 13,1961 [July 25, 1960], No. 25834/60. Class 118. [Also in Group XXI] Apparatus for effecting safety measures in the event of fire or other emergency occurring in the region of an installation having supplies of fluid fuel and electricity comprises actuating means adapted to respond to the occurrence of fire or other emergency to switch-off the electricity and fuel supplies simultaneously. A spring or weight-loaded shut-off valve provided in the fuel supply pipe of an oil fired boiler is connected by means of a heat-fusible link to the end of a pin 12 slidable in a plunger 11 and biased to the left of Fig. 1 by a spring 15. The plunger 11 is held in place in a casing 10, as shown, by a blade 16 which is rigid with a spring-loaded button .19 and has a pearshaped aperture therethrough the smaller end of which engages within a groove 18 in the plunger. In the event of fire the heat-fusible link melts which allows the valve to close and stop the supply of fuel and also allows the pin 12 to move to the left under the influence of spring 15 so as to depress the button 22 of micro switch 21 switching off the electricity supply. The actuating means may be operated manually by pressing the button 19 which allows the plunger 11 to slide out of the casing 10 so that the shut-off valve may close, a second blade 16a depressing the button 22. The electricity supply may be restored by a re-set button 23. Two or more micro switches may be operated simultaneously to switch-off a corresponding number of separate electrical supply circuits to perform some other function e.g. to operate an alarm.
Patent GB-677991-A (GB)
Title: Improvements in electronic discharge tubes
IPC: C01G49/06
Filed: 1948-10-04
Abstract: 677,991. Travelling-wave tubes. PHILCO CORPORATION. Oct. 4, 1948 [Jan. 28, 1948], No. 25848/48. Class 39 (i). [Also in Group XL (b)] A mixer has a number of input helical waveguides 31, 32 and an output helical waveguide 33 spaced further along the beam. As shown, the waveguides are all channel-shaped and wound helicoidally with their open sides directed towards the beam; the pitch and dimensions of each guide are adjusted to suit the frequency of wave which it is to propagate. The relative pitch of the input helices is also varied so that the axial component velocities of the two frequencies to be mixed differ slightly, for more efficient bunching. The output frequency may be the difference of the input frequencies, as well as the sum as shown. One input frequency may be self-generated by arranging reflection feed-back. Otherwise reflection is prevented by tapered terminating blocks of lossy material at each end of each guide. Lossy material may also be inserted in the inter-turn spaces of the helices. Specifications 677,986 and 677,990 are referred to.
Patent GB-535618-A (GB)
Title: Improvements relating to arrangements for repeater stations in electric communication systems
IPC: H04B3/44
Filed: 1939-09-15
Abstract: 535,618. Repeaters. SIEMENS BROS. & CO., Ltd., and MOLE, J. H. Sept. 15, 1939, No. 25904. [Class 40 (iv)] A submerged or other unattended repeater is fed with anode current from the attended station on one side and heater current from that on the other. The anode current is preferably supplied from the more remote of the two stations. As shown, a relay A, over back contacts of which the repeater is byepassed when not in use, is energized by the charging current of a condenser C when the anode supply is switched on at the station connected to CAB, and locks up in series with.a resistance. Contacts a3 and a4, which change over in succession after the other contacts, connect ground temporarily to the central conductor to prevent singing. Contactor a1 .. a3 may be controlled by one of two series connected relays and a4 by the other. Terminals LT, HT are the low and high tension supply terminals for the repeater.
Patent GB-1449143-A (GB)
Title: Pluralservice hydraulic system
IPC: B60T13/14
Filed: 1973-05-31
Abstract: 1449143 Hydraulically-assisted steering mechanism CAM GEARS Ltd 21 May 1974 [31 May 1973] 25981/73 Heading B7H [Also in Divisions F1 and F2] A valve 10, Fig. 2, connected between an accumulator 5 and a number of services 15, 15A, 15B such as the braking, steering and selflevelling systems of a vehicle is displaced against a spring 11 by fluid-pressure from the accumulator or from a pump 2 supplying the accumulator so that it interrupts the supply to the least important services first as the pressure falls. The line 20 is omitted and a space 18 connected to a line 7 when the valve is operated by accumulator pressure. In Fig. 3, a spring strut 39 loads the valve which controls a service line 33. Leakage past the valve is returned by line 34 to the pump 2.
Patent GB-719603-A (GB)
Title: Fluorescent screens
IPC: G21K4/00
Filed: 1952-10-16
Abstract: A fluorescent screen having a matt surface comprises a sheet support, a layer thereon of particles of a fluorescent material dispersed in a binding medium of mixed cellulose nitrate and an acrylic acid ester polymer and, superimposed on the fluorescent layer, a thin layer of a hydrophobic cellulose carboxylic acid ester of which the ester groups are predominently acetate.  The fluorescent material may be calcium tungstate, barium lead sulphate mixed crystals, zinc sulphide, zinc cadmium sulphide mixed crystals, magnesium tungstate and zinc silicate.  The ratio of mixture of binding agents to fluorescent material can be from 1:10 to 1:50 by weight, the ratio of cellulose nitrate to acrylic acid ester polymer can be 0.4-8:1 and the thickness of the cellulose ester coating can be 0.002-0.05 mm.  The acrylic acid ester polymer can be an alkyl methacrylate polymer of which the alkyl groups contain 1 to 4 carbon atoms as methyl methacrylate polymer-many examples are given.  The sheet support may be cardboard to which a solution of cellulose nitrate in ester or ketone solvents, e.g. methyl acetate, ethyl acetate or acetone, can be applied.  The cardboard support can be replaced by other flexible or stiff supports such as plastics, e.g. cellulose derivatives; super polymers, e.g. polyvinyl chloride, polyamides, e.g. nylon and polyesters, e.g. polyethylene terephthalate; aluminium and aluminium alloys.  The sheet support when composed of plastic materials may contain pigments such as TiO2, ZnO, ZnS and ZrO2, or dyes (list given) in order to make them opaque to light.  A backing coat may be applied to the fluorescent layer and serve as an adhesive layer for the card or plastic sheet support and may contain any of the foregoing pigments to modify the reflection of the fluorescent light. Suitable adhesive layers are polyvinyl acetate and magnesium oxide-pigmented cellulose nitrate or ethyl cellulose.  The various layers are superimposed on a smooth surface such as a glass plate, the fluorescent material layer including a high boiling point solvent for cellulose acetate and the adherent layers are then stripped from the surface.  Several high boiling point solvents for cellulose acetate are referred to, the one preferred being the methyl ether of ethylene glycol monoacetate.  Specifications 538,178, [Group XL], and 623,386, [Group XL (a)], are referred to.
Patent GB-916067-A (GB)
Title: Radar-reflective towed target
Inventor: POWELL FORBES RUSSELL
IPC: F41J2/00
Filed: 1961-07-18
Abstract: 916,067. Radio reflectors. DEL MAR ENGINEERING LABORATORIES. July 18, 1961, No. 26037/61. Class 40 (7). [Also in Group XXXIII] A radar-reflective towed target has a hollow stream-lined body adapted to rotate continuously in flight, and forward end, rearward end and intermediate reflector assemblies provided within the body, the forward and rearward end assemblies comprising forwardly and rearwardly directed corner assemblies respectively and the intermediate assembly comprising four reflecting surfaces 90 degrees apart extending longitudinally of the said body and transverse reflecting surfaces at the two ends of the said four surfaces forming first and second sets of circumferentially spaced corner reflectors with axes of symmetry inclined forwardly and rearwardly respectively at angles to the said longitudinal axis. The target comprises a body 10 divided into sections 10a, 10b 10c and 10d, the nose section 10a carrying a balance weight 14 and a swivel 12 for a towing cable 13 whereby the body may be free to rotate continuously by the action of airflow on bent tips 16 to fins 15. Faired casings 18 support flares ignited by remote control and the body is divided by panels 25, 40 and 40 to form compartments for radar reflective panel assemblies and radio equipment, as shown in Fig. 2. The forward assembly A comprises three intersecting panels 28, 30, 32 mounted on panel 25 and profiled to the nose shape of the body. The central assembly comprises four longitudinal panels 38 mutually at 90 degrees and the rear assembly and the rear assembly panels 48, 50, 52 mutually at 90 degrees and meeting at a common point on the longitudinal axis adjacent panel 42. All panels may be foam plastic coated with metal foil and the compartment between panels 25 and 40 houses a power pack 22 and radio receiver 24, dipole antennµ being positioned between panels 38. The end reflector assemblies may be reversed and the body 10 is constructed of moulded paper impregnated with a waterproofing agent.
Patent GB-1133582-A (GB)
Title: Improvements in or relating to headsets
Inventor: MOORCROFT JOHN
IPC: H04M1/05
Filed: 1965-06-21
Abstract: 1,133,582. Headsets. DENIS FERRANTI METERS Ltd. 23 May, 1966 [21 June, 1965], No. 26083/65. Heading H4J. In a combined headset and boom microphone, the boom is supported for slidable and rotatable movement on one of the earpieces, whereby the positioning of the microphone relative to the user's mouth can be adjusted. The boom is in the form of a rectangular wire frame 23 which is frictionally supported on a rotatable button 22 that in turn is frictionally supported by an earpiece.
Patent GB-862446-A (GB)
Title: Improvements in or relating to optical sighting apparatus
IPC: G02B27/64
Filed: 1957-08-19
Abstract: 862,446. Sighting instruments; levels; TSUBOKAWA, I. Aug. 19, 1957 [Aug. 21, 1956], No. 26159/57. Classes 97(1) and 97(2) An optical system for establishing a horizontal line of sight includes an objective lens with a reference element located at the position of a vertical image of the image-side nodal point thereof and reflecting means adapted to return to said position all rays which are incident horizontally on the lens and pass through the object side nodal point thereof. As shown, the system comprises an objective O<SP>1</SP> having at the position of the vertical image of its image-side nodal point K (the image being formed by a prism P), a cross-wire R, and a vertical mirror M suspended at A. Thus, even though the system axis may be inclined, horizontal rays passing through the nodal point K will be reflected back by mirror M. Prism P is so placed that an image of the cross-wire R can be viewed through an eyepiece E at the same time as the image of an object formed by lens O<SP>1</SP> Mirror M may be horizontal in which case a pentaprism is provided to direct incident horizontal rays vertically into the lens O<SP>1</SP>.
Patent GB-1299432-A (GB)
Title: Remote control apparatus
Inventor: TRACEY PETER MARTIN
IPC: F15B7/00
Filed: 1968-11-29
Abstract: 1299432 Telemotor systems HERGA ELECTRIC Ltd 1 Dec 1969 [29 Nov 1968] 26160/72 Divided out of 1299431 Headings F1P and FIX [Also in Division H1] A telemotor system consists of a bi-stable remote control apparatus for displacing a mechanism between first and second positions and maintaining the mechanism stable in either position, the apparatus comprising a master fluid actuator 2 connected to a slave fluid actuator 2<SP>1</SP> by a conduit 34, each said actuator comprising means defining a chamber for containing working fluid, and a member 22 or 22<SP>1</SP> displaceable between first and second positions to change the volume available for said working fluid within said chamber, said member being resiliently biased into a first position when at one side of an intermediate position, Fig.2 (not shown), and into a second position when at the opposite side of said intermediate position, said resilient biasing rendering the member stable in both first and second positions and unstable therebetween, the member 22 of the master actuator being movable in response to external pressure, for example on a button 20 attached to member 22, and the member of the slave actuator being movable in response to changes in the pressure exerted by the working fluid caused by movement of the member of the master actuator. The biasing is caused by resilience of a flexible tubular member connecting the member 22 or 22<SP>1</SP> with a base 4 or 4<SP>1</SP> having a bore 14 or 14<SP>1</SP> and forming part of the chamber defining means. Each actuator includes a spindle 18 or 18<SP>1</SP> which is a loose fit in a sleeve 6 or 6<SP>1</SP> formed in the base 4 or 4<SP>1</SP> to guide the member 22 or 22<SP>1</SP>. In a modified form, Figs. 5 and 6 (not shown), the master actuator is encased and the member is moved by a switch rocker, the slave member having a conducting strip which, in one position, bridges a pair of electrical contacts, thereby forming a remotely controlled electric switch (see Div.H1). The member of each actuator may comprise a plate spring, Fig. 3 (not shown) which moves by snap action and forms part of the chamber defining means, or a chamber in the form of bellows, Fig.4 (not shown), attached to such a plate spring may be provided. The systems need not be fluid-tight. Specification 1299431 is referred to.
Patent GB-705328-A (GB)
Title: Improvements in or relating to apparatus for transmitting rotary movement
Inventor: ATTON ALFRED MONTAGUE
IPC: F16H37/00
Filed: 1951-11-08
Abstract: 705,328. Control of two motors. SAVAGE & PARSONS, Ltd. Nov. 4, 1952 [Nov. 8, 1951], No. 26167/51. Class 38(3) [Also in Groups XXI, XXIV, XXXVIII and XL(c)] A radar scanner, wherein the aerial reflector 1 and associated primary element are rotatable about two axes in planes at right angles to each other includes two reversible motors 2 each driving, through suitable gearing, pinions 11 rotatable about the same axis and being in engagement with a third pinion arranged between them and rigidly attached to the aerial unit. The motors 2 may be arranged to drive shafts 4 through reduction gearing 3. Bevel gears 6 on the end of shafts 4 each mesh with a gear 7 integral with a pinion 11 and free to rotate about the same shaft 8. Shaft 8 is bushed centrally to receive cross shaft 9 which carries pinions 12 completing the differential. One of the pinions 12 is secured to the shaft 9 as shown and the shaft itself has the support arms 10 for the aerial system keyed to its ends. Rotation of both pinions 11 in the same direction at the same speed rotates the aerial system about the axis of shaft 8 and rotation in opposite directions at the same speed rotate the aerial about the axis of shaft 9. To control the movement of the scanner an elevation position potentiometer 21 and an azimuth position potentiometer 22 are actuated by the aerial movement to give slider output potentials corresponding to the angular position of the scanner. These output potentials are compared with control signals, derived from movement of potentiometers 28 and 29 as shown or from wave-form generators giving a desired scan pattern or from an autofollow arrangement, in the high resistance bridge network ABCD. Error signals for azimuth control are applied between points B and D of the network and the elevation control error signals between A and C. One motor 2 is controlled by a control amplifier 27 according to the potential difference between the points X and Z at the mid-points of opposite sides of the network and the other motor similarly controlled according to the potential difference between W and Y at the mid-points of the other two sides. The motor control is such as to energize the motors to rotate to reduce the error signals. Velocity feed-back for damping or for velocity control may be effected by tachometer generators coupled to the gear trains 3 and having outputs fed through a resolving network before being added to the error signals.
Patent GB-172423-A (GB)
Title: Improvements in or relating to liquid fuel heating and pumping apparatus
IPC: F23K5/20
Filed: 1920-09-13
Abstract: 172,423. McKean, J. G., and Jones, R. F. Sept. 13, 1920. Machinery beds and frames.-In a combined pumping and heating apparatus for supplying liquid fuel to burners &c. the feet of the pump a and heater b are secured to the bed plate c by similar bolts g arranged in positions equidistant from and symmetrically disposed in respect to the longitudinal vertical centre planes of the pump and heater so that the pump and heater may be transposed to form a right or left handed unit. The bed plate forms a drip-tray for the completeunit.
Patent GB-660283-A (GB)
Title: An appliance for stimulating the process of lactation
IPC: A61M1/00
Filed: 1948-10-08
Abstract: 660,283. Breast pumps. GASCOIGNES (READING), Ltd., and GASCOIGNE, G. H. Oct. 10, 1949 [Oct. 8, 1948], No. 26271/48. Class 81 (ii). [Also in Group I] An appliance for drawing off milk comprises a hollow body 1 divided by a slightly flexible wall 10 into inner and outer concentric chambers, the outer chamber having a flexible wall 18 for application to the surface of the breast around the nipple and the inner one having a flexible wall 20 for surrounding the nipple itself. Pneumatic pulsations of alternate pressure and vacuum are applied to the two chambers alternately to cause the flexible walls to simulate the natural movements during sucking. An intermittent suction is applied through the tube 40 and central duct 19 so that milk drawn off can pass into the container 37, this suction being applied at the same time as the existence of a vacuum in the inner of the two chambers.