baber/WOPTO huggingface dataset:
Patent GB-952115-A (GB)
Title: Improvements in mirrors and methods of manufacturing mirrors
Inventor: JEFFREE HERBERT
IPC: G02B5/08
Filed: 1961-07-31
Abstract: 952,115. Mirrors. VICKERS-ARMSTRONG (AIRCRAFT) Ltd. July 30, 1962 [July 31, 1961], No. 27726/61. Heading G2J. The mirror has a thin reflecting sheet stretched across a frame formed of two components, to one of which the sheet is attached and which can be extended by stretching, whilst the other component is more rigid and engages the first component when extended to hold it permanently in the extended condition. As shown in Fig. 1, a metallised transparent sheet 26 is attached as by adhesive to frame component 40 which has a groove 402 engaged by a flange 5021 on frame component 50, whereby the component 40 is held extended and sheet 26 stretched. The component 50 may, in other forms, comprise an annular plate or a tube of elliptical cross-section. In another alternative, Fig. 4, the sheet 26 is attached to a curved frame component 41 mounted on a tube 53. By pressing downwardly a clamping ring 60, the component 41 is held in extended condition with sheet 26 stretched. The sheet 26 may be associated with a transparent sheet as of polystyrene, an air bubble separating the sheets so that a concave or convex mirror may be formed. (Fig. 6 not shown.)
Patent GB-792655-A (GB)
Title: Improvements in or relating to electric lamp holders made of insulating material
IPC: H01R33/46
Filed: 1956-09-11
Abstract: 792,655. Lamps. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Sept. 11, 1956 [Sept. 14, 1955], No. 27755/56. Class 75(3) [Also in Group XXXVI] A lampholder (see Group XXXVI), particularly for use in irradiation apparatus and for high-powered lamps is pivoted on a stand 16 having a handle 19.
Patent GB-1472392-A (GB)
Title: Method for dynamic balancing
IPC: G01M1/22
Filed: 1975-07-02
Abstract: 1472392 Measuring rotary unbalance electrically AVERY DENISON Ltd 2 July 1975 [14 Dec 1974] 27813/75 Heading G1N In apparatus for determining rotary unbalance the instantaneous unbalance signals 2a, 2b Fig. 1 obtained in each of the measuring planes, taken at a pre-set number of intervals over one cycle, are converted at 7a, 7b into digital signals, a separate source 9 produces a series of values of sin u and cos u, where u has the same frequency as the rotating test rotor, digital values of sin u and cos u at the same instances as those used for the unbalance signals 2a, 2b are obtained at 10.1 and 10À2, and these four signals are multiplied together at 11 and averaged at 13 to obtain the two rectangular components of each of the unbalance masses in the measuring planes. The circuit includes attenuators 3a, 3b, automatically adjusted by units 4a, 4b to guard against overloading; filters 5a, 5b, with subsequent correction at 18 for the filter attenuation over the pass frequency range; conversion at 14 into components of unbalance in predetermined correction planes, with subsequent conversion to polar components at 17. The unit 18 may also introduce, from a store 19. corrections for errors of amplitude and phase angle dependent on the speed of rotation.
Patent GB-655032-A (GB)
Title: Improvements in or relating to the deposition of material according to a pattern
Inventor: SPENCER ROLF EDMUND
IPC: H01J9/227
Filed: 1946-09-18
Abstract: A method of depositing material in a finely-divided state on a continuous surface according to a pattern, comprises depositing on the surface as a pattern an electrically-conductive coating, and electrically charging the coating so that the material is deposited on the coating and to a lesser extent or not at all on other parts of the surface.  A fluorescent screen in a cathode-ray tube for use in colour television, is formed by depositing in turn on a support, by spraying or evaporation, a conducting layer, an insulating layer and through a stencil the pattern, for example in the form of two intermeshing zig-zags or combs.  The conducting layers may be of platinum and the insulating layer of lithium borate or quartz.  The insulating material exposed between the zig-zag patterns is then removed to expose underlying conducting layer.  A different fluorescent material is then deposited, by a settling process or by spraying, on each conducting layer, to form a three-colour strip screen.  The cathode-ray tube may be tilted to inhibit settling of the fluorescent material on the uncharged layers due to gravity.  The material to be deposited may be irradiated with ultra-violet light so as to enhance the attraction of the material to the conducting layer. The invention may be applied to the spraying of cellulose lacquers. Specifications 592,860, [Group XL], and 634,702, [Group XL (a)], are referred to.
Patent GB-321773-A (GB)
Title: Method of and apparatus for conveying and delivering pulverised materials
IPC: B02C23/00
Filed: 1928-09-28
Abstract: 321,773. Loesche, E. C. Sept. 28, 1928. Fuel, feeding.-A method of grinding and delivering pulverized material such as coal, consists in utilizing one part of the same air draught for conveying and precipitating the pulverized coal whilst the other part is used for conveying the precipitated coal to the furnace. Coal to be crushed is conveyed by a pipe 13 to a mill 1 and the pulverized coal is carried by an air blast from a fan 3 into a separator 2 where it is deposited and the air is returned to the mill through pipes 5, 12. Branch pipes 6<a>, 6<b> are connected to outlets 4<a>, 4b from the hopper and to the air pipe 5, the volume of air passing through the pipes being controlled by valves 8<a>, 8b. Coal dust discharged through the outlets 4<a>, 4<b> is blown into a furnace 7. The air circulating in the system is controlled by a valve 10 whilst excess air is discharged through a pipe 11 or fresh air or preheated air or waste gases is admitted through pipe 12.
Patent GB-383370-A (GB)
Title: Improvements relating to detachable covers for manholes, inspection openings and thelike
IPC: F16J13/04
Filed: 1931-10-08
Abstract: 383,370. Manhole doors. VICTORY VALVES, Ltd. and GRAY, T. F., Adswood, Stockport. Oct. 8, 1931, No. 27952. [Class 123 (i).] A detachable cover for manholes or inspection openings is built up from a number of cover pieces of decreasing size and adapted to nest one within the other, each being held in position by separate securing means. The internal cover piece is made in two parts, an outer ring a seating on a boiler shell b, and an inner part c seating on the ring a. The outer ring a, which has a positioning strip d, is held by bolts and nuts f, g on bridge-pieces h extending across the opening, and the inner part c is held by bolts j secured to outer adjacent plates m, n arranged as described in Specification 373,376, [Group XXIX], and having a ridge o which enters a groove p in the shell b. A detachable ring k serves as a positioning means for the part c, and retains the heads of the bolts j. The internal pressure within the boiler ensures fluidtightness at the ring joints, and each part may be removed separately, and is of manageable weight.
Patent GB-381719-A (GB)
Title: Improvements in or relating to electrical indicating, controlling or repeating systems
Filed: 1931-10-08
Abstract: 381,719. Electric signalling systems. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and CHUBB, A. A., Telephone Works, Stoke, Coventry. Oct. 8, 1931, No. 27956; [Class 40 (i).] Movement of a pointer or the like affects the circuit of a discharge tube which is in the circuit of a second discharge tube, the frequency of oscillation of the second tube controlling the indications received at a remote point. The pointer 1 moves a shutter 2 to control the amount of light from a source 3 that reaches a selenium cell 4. The selenium cell is connected in circuit with the grid of the thermionic triode 8 and movement of the pointer thus affects the potential across the valve 8 which controls the rate of charging of the condenser 11 and consequently the frequency of the relaxation oscillations in the circuit of the neon tube 10. The arrangement is coupled to a frequency responsive device through transformer 15. A decoupler 14, comprising a resistance and two condensers arranged as shown, is preferably placed between the valve 8 and the tube 10. Instead of using the selenium cell system, the pointer may control the grid bias of the valve 8 by movement of a conductor in a bath of conducting liquid such as copper sulphate solution in water containing glycerine, and the valve 8 may itself be arranged as the impedance in series with the neon tube.
Patent GB-1084474-A (GB)
Title: A cyclonic separator
IPC: B04C5/22
Filed: 1966-06-22
Abstract: Parts of an apparatus coming in contact with molten oxide mixtures or glasses are made from an alloy consisting of RR 2-10% Pd 0.5-10%, Pt the remainder.  The alloy may also contain up to 2% of Os, Ir and/or Ru.  Apparatus exemplified includes spinnerets for making glass fibre and mineral wool and crucibles and tanks for melting glass.
Patent GB-599413-A (GB)
Title: Improvements relating to skirts
IPC: A41D1/14
Filed: 1945-10-24
Abstract: 599,413. Skirts. FRIEDLAND, A. Oct. 24, 1945, No. 27998. [Class 141] To prevent sagging at the seat portion, a skirt is provided with a yieldable lining strip, of sufficient width to overlie the seat portion, secured to the skirt at the waist and hem and unattached at all points between the upper and lower secured edges. The lining strip may be cut from a single piece of material or, as shown in Fig. 3, may be in three separate pieces 14a - 14c, cut on the bias in different directions and secured to one another at inclined seams 15 and 16, the strip being attached to the waist and lower edges of the skirt 10 by means of lines of stitching 19 and 20 and having its lateral edges turned in and stitched at 17 and 18. In modifications, the lining is fastened to the skirt by means of buttons and buttonholes or by a plurality of hooks adapted to engage the waist and bottom hems. In a further modification, Fig. 11, a lining strip 27 composed of members 27a and 27b cut in different directions of the bias, terminates above the lower edge of the skirt and is secured at the waist by a line of stitching 29, the lower edge of the lining 27 being provided with bands 30-32 which are fastened at their lower edges to the hem of the skirt 10.
Patent GB-703733-A (GB)
Title: Improvements in or relating to electronic musical instruments
IPC: G10H5/00
Filed: 1951-11-29
Abstract: 703,733. Electrophonic musical instruments. JENNY, G. Nov. 29, 1951, No. 28066/51. Drawings to Specification. Class 88 (2). To increase the realism of an imitation of wind or stringed instruments by an electro- .phonic instrument, blowing, bowing, or plucking effects may be added to the output. This is achieved by means of some form of transducer, such as a piezo-electric crystal which is blown upon by the player or by the bellows of an accordion or is secured to a rod or string or the like which is bowed or plucked by the player. The resulting current is used to control the volume of the sound produced by the instrument.
Patent GB-156961-A (GB)
Title: Improvements in or relating to devices for exploding mines
IPC: F42D1/05
Filed: 1919-11-12
Abstract: 156,961. Barthelemy, R. Nov. 12, 1919. Addition to 143,488. Electromagnetic switches.-Relates to apparatus for firing a number of fuses a in series, comprising an electric generator b with an electromagnet h and a capacity g in shunt adapted to resonate when the generator is rotated up to a certain speed in order to attract an armature c and thereby to close a switch c, d in the main circuit, as described in the parent Specification. According to the invention there is added to the electromagnet h a winding i in series with the main circuit so arranged as to prevent accidental re-opening of the circuit.
Patent GB-1092706-A (GB)
Title: Improvements in or relating to mechanical joint constructions
IPC: B62D7/16
Filed: 1966-06-23
Abstract: 1,092,706. Joint constructions. COLUMBUS AUTO PARTS CO. June 23, 1966 [June 24, 1965], No. 28099/66. Heading E2F. A joint construction 10 comprises a housing 20 having a central cavity 22 which has an opening 26 at one end; a stud member 38 extending through the opening and having a head section 40 disposed Within the cavity, said head section having a frusto-conical portion 46 and a hemispherical portion 42, first 60 and second 62 seat members disposed with in the cavity for supporting the head section of the stud member, the first seat member being engaged with the hemispherical portion of the head section for limiting axial and angular movements of the stud member relative to the housing; and closure means 90 closing the cavity in the housing, means being provided compressed within the cavity for urging the first seat member into engagement with the hemispherical portion of the head section of the stud. As shown in Fig. 2, the means compressed into the cavity comprises an axially extending resilient portion of the first seat member. In another embodiment, an annular ramp portion projects upwardly from the top of the first seat member. The top of the seat member 60 is formed with an upwardly projecting ramp which is compressed by the closure means. The seat member 60 may be constructed of a synthetic rubber material, e.g. urethane, and the seat member 62 of synthetic polymer bearing material, e.g. Delrin (trade mark) or nylon. The first seat member may have a plurality of lubricant-retaining grooves adjacent to the head section of the stud member.
Patent GB-1357524-A (GB)
Title: Apparatus for detecting objects
IPC: G01N21/55
Filed: 1970-06-10
Abstract: 1357524 Photo-electric detection of plants NATIONAL RESEARCH DEVELOPMENT CORP 9 Sept 1971 [10 June 1970 (2)] 28132/70 and 28133/70 Heading G1A Plants to be treated e.g. thinned out, fertilised, sprayed for pest or disease control, or watered, are detected by photo-electric apparatus which scans back and forth across a row of plants as the machine moves along it, plants being differentiated from the ground by measurement of reflected intensities in two different wavelength regions. In Fig 1, light from a lamp 11 and lens 12 is reflected from a first mirror on oscillating spindle 14 as a patch of light of the same order of area as that of the smallest leaf to be detected on to the ground. Reflected light from the ground (or leaf) is directed by a second mirror 15 on the spindle to a dichroic mirror 16, which transmits wavelengths less than 700 mm. to a first photo-cell 21 and reflects wavelengths above 700 mm. to a second photocell 22. Alternatively filters may be used and restricted wavelength ranges e.g. 620-640 mm. and 770-790 mm. used. The photo-cells used are arranged in a circuit so as to provide a ratio of the intensities in the two wavelength ranges, which ratio is higher for leaves than for soil. The detectors 21, 22 are integrating devices each based on a combination of a planar photodiode and metal-oxide-silicon transistors. One diode 21 is operated in a closed-loop mode in which its output is fed to a level detector 26 which senses each time the diode charge drops to a predetermined level due to the incident light intensity causing discharge of the device, and results in a generator producing a pulse which is fed back to recharge the photo-diode 21. The frequency of generation of these pulses is proportional to the intensity incident on diode 21. The pulses are therefore also fed to diode 22, as charging pulses, this device operating in an open loop mode, in which the device is recharged by, regular external pulses; in this case from the generator 26. The amplitude change of this device is thus representative of the ratio of the intensities incident on the two diodes. An amplitude discriminator 28 detects if the ratio is above the highest level likely for soil and triggers the treating mechanism accordingly. The gain of the amplifier 25 associated with the diode 21 is reduced when high levels of ambient light are detected by a photo-conductive device so as to prevent malfunction of the photo-diode circuit.
Patent GB-545801-A (GB)
Title: Improvements in and relating to high-vacuum hot-cathode tubes
IPC: H01J19/02
Filed: 1939-10-19
Abstract: 545,801. Thermionic valves. AKT.-GES. BROWN. BOVERI & CIE. Oct. 19, 1939, No. 28248. Convention date, Oct. 19, 1938. [Class 39 (i)] In a dismountable sealed-off high-vacuum thermionic valve more particularly for high power transmission at high frequencies, the anode 6 is cooled by being swept over by water traversing helical paths at high velocity and the valve is closed at the cathode end by an extension 2 sealed to a cathode terminal ring 1 ; if the cathode becomes useless the extension is cut off and the cathode with its supports 9 withdrawn the seating 11 in the second ring 3 being of less diameter than the extension 2. If desired the grid 12 and other electrodes may be similarly removed and new parts reinstated after which a fresh extension is sealed to the ring 1, the tube evacuated and fettered, this being effected with the use of the tube 7 on the extension detachable cooling jackets surround rings. The Specification as open to inspection under Sect. 91 also describes a construction for cooling the anode by liquid flowing over its outer surface. This path may be formed by a helical partition 2, Fig. 1 (Cancelled) in a jacket surrounding the anode 1; the jacket is divided by a longitudinal partition 3 and the liquid passes out through the outer compartments. The grid 14 may also be supported on a V-shaped tube 12 through which cooling-liquid flows, the cathode 3 being attached to a hook 15 on an insulating sleeve 16 on the tube 12. The various leads are connected to discs 18, 21 mounted at the upper end of the tube by insulating sleeves 19 secured by cement. Cooling- liquid may flow through passages in these discs. A hood with an exhaust-pipe, sealed off after exhaustion, may be attached to the uppermost disc. In a modification the anode is formed by a helical tube, the coils of which are in metallic connection, the inlet and outlet pipes being unitd along one side. The pipes may also be employed as leads. This subject-matter does not appear in the Specification as accepted.
Patent GB-806588-A (GB)
Title: Resolution of dl-lysine with d-camphoric acid
Filed: 1957-09-06
Abstract: L-Lysine is recovered from DL-lysine by reacting in an aqueous medium between 0.2 and 0.35 mol. of D-camphoric acid with one mol. of DL-lysine, precipitating the resulting di-L-lysine.D-camphorate with a C1-3 monohydric alcohol, decomposing the separated di-L-lysine.D-camphorate and recovering L-lysine therefrom.  The by-product D-lysine may be racemized, e.g. by heating with NaOH solution, and recycled to the process.  The precipitated di-L-lysine.D-camphorate may be dissolved in water and the L-lysine recovered therefrom either by passing the aqueous solution through a cation exchange resin followed by elution with ammonia, or by treatment with concentrated HCl or equivalent acid, separation of the D-camphoric acid, neutralizing with e.g. concentrated ammonia solution to a pH of 5 and precipitating the lysine as the hydrochloride by addition of acetone or a C1-3 monohydric alcohol. The precipitating alcohol is preferably methanol and is preferably added in such quantities as to form a medium containing 60 to 90 parts by weight of alcohol to 40 to 5 parts by weight of water.
Patent GB-1322420-A (GB)
Title: Dry cell
IPC: H01M2/08
Filed: 1971-06-17
Abstract: 1322420 Dry cells MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 17 June 1971 [19 June 1970] 28415/71 Heading H1B The upper and lower ends 5, 11 of the metal outer jacket 4 of a dry cell are bent over to embrace, respectively, the upper protrusion 25 of an upper plastics ring 24 and the lower protusion 26<SP>1</SP> of a lower plastics ring 24<SP>1</SP>. The jacket 4 is formed into a cylinder from a metal sheet, the opposing sheet edges abutting each other in a "jointless" manner, expansion of the cylinder being prevented by the engagement of the ends 5, 11 with the protrusions. The cell also includes a zinc can 15 containing a separator 20, depolarizer 19, carbon rod 18 surmounted by a cathode cap 7, and upper and lower insulators 22, 21. The can 15 is surrounded by a resin tube 6 having its top end bent over the upper surface of a seating bush 10. The cap 7 extends through the upper ring 24, a flange 8 of the cap being clamped between the underside of the ring and the bent-over top of the tube 6. The protrusion 26 prevents the flange 8 from touching the can 15. The bottom of the can is engaged by an anode terminal plate 12 extending through the ring 24<SP>1</SP>, a seal ring 23 being interposed between the flange of the plate 12 and the inwardly bent lower end of the tube 6.
Patent GB-533255-A (GB)
Title: Improvements in or relating to audio-frequency amplifiers with inverse feedback
IPC: H03G9/08
Filed: 1939-10-23
Abstract: 533,255. Valve circuits for wireless reception. PHILIPS LAMPS, Ltd. Oct. 23, 1939, No. 28511. Convention date, Oct. 26, 1938. [Class 40 (v)] High frequency oscillations are fed to diode-anode 2 and the rectified signal is taken from a tapping on resistance 4 to a grid 7 when it is amplified and fed through output transformer 8 to loudspeaker 9. Negative feed-back is supplied by coils 10, 11 on the transformer core connected through a small condenser 13 to the lower end of resistance 4. Coil 11 is bridged by a potentiometer 12 the sliding contact of which is connected through a small condenser 16 to a point on a leakage resistance 6. Negative feed-back of the high tones takes place through condenser 13 independently of the position of the slider on 12, movement of which varies the feed-back on the low tones. The connection of a condenser 15 to the anode causes an increase in feed-back of the high tones when the slider is moved upwards to increase the low tone feed-back. The condenser 16 gives a sharp cut-off at the upper end of the tone register at maximum volume.
Patent GB-726171-A (GB)
Title: Improvements in or relating to electric insulators
IPC: H01B17/20
Filed: 1953-10-16
Abstract: 726,171. Insulators. FIORAVANTI, J. Oct. 16, 1953, No. 28627/53. Class 36. An insulator made of flexible material comprises a bell C having at its narrow end a transverse groove R which narrows towards its base and then widens into a channel L into which a conductor F is forced. The insulator is provided with a stem S which may be integral with the bell and which fits over a support member D.
Patent GB-156379-A (GB)
Title: Improvements in means or appliances for use in connection with pudding basins and the like
IPC: A47J43/20
Filed: 1919-11-19
Abstract: 156,379. Gartside, A. Nov. 19, 1919. Lids and covers. - The covering cloth or cover of a pudding or like basin is secured by a resilient metal or other ring a divided at one point, the free ends being turned outwards. Hooked arms c are provided for engagement with the rim of the basin. In a modification, the hooks are not integral with the ring, and the free ends do not overlap and are not turned outwards.
Patent GB-1115484-A (GB)
Title: Direct-current step difference potentiometer
IPC: G01R1/28
Filed: 1965-07-06
Abstract: 1,115,484. Selective signalling. SIEMENS A.G. 6 July, 1965 [7 July, 1964], No. 28684/65. Heading G4H. In a digital-to-analogue converter, switch 26, Fig. 1, selected constant reference currents, produced by transformers 4, 5, ... 10, having their primary windings series connected to a constant current source 1, are applied to precision resistors R1<SP>1</SP>, R2<SP>1</SP>, ... R7<SP>1</SP>, to develop a corresponding output voltage across terminals 27, 28. When the switches 26 are in their normal positions, as shown, the constant reference currents pass through resistors R1, R2, ... R7, nominally the same value as resistors R1<SP>1</SP>, R2<SP>1</SP>, ... R7<SP>1</SP>. In a second embodiment (Fig. 2, not shown) transformers having tapped primaries series-connected via 10:1 auto-transformers are used.