baber/WOPTO huggingface dataset:
Patent GB-753296-A (GB)
Title: Closure for openings
IPC: E05C9/06
Filed: 1954-11-17
Abstract: 753,296. Multiple fastenings. ENGWALL & CO. KOMMANDITBOLAG V.T. Nov. 17, 1954 [Nov. 17, 1953], No. 33289/54. Class 44. [Also in Group XVIII] In a closing device for a door or other closure for hermetically sealing an opening 21 in a pressure chamber, locking abutments 14, Fig. 3, spaced around the opening are adapted to be engaged by locking-bars 5, 5a on the door by the rotation of a hand wheel C which actuates intermediate spur gearing 8, 8a, 9 and 10. Gear-wheels 8, 8a have spiral grooves 7 therein engaged by projections 6 on plates 4 to which the locking-bars 5 are secured. Top and bottom locking-bars 5a also have projections 6 engaging the grooves 7. The outer faces of the locking-bars 5, 5a are bevelled to co-operate with correspondingly bevelled adjustable blocks disposed in the locking abutments 14. In a modification the spur gearing is replaced by worm gearing.
Patent GB-794802-A (GB)
Title: Molded pulp container with tear strip
IPC: B65D85/32
Filed: 1956-11-01
Abstract: 794,802. Egg cartons. KEYES FIBRE CO. Nov. 1, 1956 [Nov. 4, 1955], No. 33353/56. Class 18. A moulded egg carton consisting of three sections 12, 14, 16 has a tear strip 56 formed between the sections 14, 16, where by after the rim of the section 16 has been permanently secured to the superposed rims of the sections 12, 14 after filling, the carton may be opened by tearing off the strip 56.
Patent GB-425586-A (GB)
Title: Improvements relating to systems for electrically measuring the thickness of metallic walls, sheets and the like
IPC: G01N27/90
Filed: 1934-11-21
Abstract: 425,586. Linear dimension gauges. LOEWENSTEIN, A., Beth Perlmann, Kerem Awraham, Jerusalem. Nov. 21, 1934, No. 33466. [Class 106 (ii)] [See also Group XXXVI] An arrangement for measuring the thickness of metal sheets, detecting faults in metal walls and like purposes, comprises a coil 1 connected to a source of alternating current, and a coil 2 arranged on the same side of the sheet 3 or other article under examination, the coil 2 being connected to an electric measuring instrument and so dimensioned and arranged that it is only influenced by the flux which completely threads the sheet, whilst being free from influence by the stray flux. Mathematical formulµ are given for determining the dimensions of the coils in relation to the frequency of the current. An iron core 4 is preferably employed for directing and increasing the flux. The readings of the instrument connected to the coil 2 are dependent on the eddy current losses in the sheet, which are a fraction of the thickness of the sheet, a differential arrangement may be employed with two pairs of coils, the measuring coils of each pair being connected in opposition, one pair of coils being placed in proximity to a sheet of standard thickness and the other to a sheet under examination; this arrangement indicates any variations from the standard in the thickness of the sheet under examination. In the arrangement shown in Fig. 3, two sets of coils are placed against a pipe 3<1> at a suitable distance apart and the pipe is slowly rotated. If one set of coils encounters a faulty pipe section, an indication is given bythe measuring instrument.
Patent GB-1246020-A (GB)
Title: Process for purification of sodium silicofluoride
IPC: C01B33/10
Filed: 1969-07-03
Abstract: 1,246,020. Sodium silicofluoride. CENTRAL GLASS CO. Ltd. 3 July, 1969 [7 July, 1968], 33689/69. Heading C1A. Sodium silicofluoride containing gypsum and/or phosphate impurity is purified by forming a slurry by contacting sodium silicofluoride containing gypsum and/or phosphate impurities with an aqueous solution containing at least 0À5% by wt. of sodium chloride, agitating the slurry and separating the silicofluoride from the solution. The aqueous solution may also contain mineral acids, magnesium chloride and nitrate, ammonium chloride, sodium nitrate, carbonate and borofluoride and/or water soluble sodium salts of organic acids. The amount of aqueous solution may be from 10 to 350 litres per kilogram of sodium silicofluoride with agitation times of from 5 to 60 mins.
Patent GB-1137795-A (GB)
Title: Apparatus for continuously subjecting elongated plastics material to a treatment in a treatment zone
IPC: B29C48/355
Filed: 1967-07-21
Abstract: 1,137,795. Treating sheet material; film treatment apparatus. INVENTA A. G. FUR FORSCHUNG UND PATENTVERWERTUNG. 21 July, 1967 [22 July, 1966], No. 33698/67. Headings B5A and B5B. [Also in Division B6] Apparatus for continuously passing elongated plastics material through a treating zone comprises a feed roll driven by a motor through an overrider clutch and a draw off roll driven by a separate motor at a higher speed than the speed at which the overrider clutch disengages the drive from the feed roll. In operation, with the material passing normally through the zone, the material is driven solely by the take-off roll since it moves the material at such a rate that the feed roll is rotated above the speed at which its drive is disengaged by the clutch. In the event of the material breaking in the zone, the leading portion of the sheet engaged by the feed roll will slow down thus causing the feed roll to slow until the speed is reached at which the drive is engaged by the clutch. The feed roll then drives the material through the zone until the leading edge of the material engages the take-off roll which once again takes over the drive thus causing the material to speed up and the clutch to cut out the drive to the feed roll. In the embodiment shown in the figure, material is extruded on to a drum 2, cooled thereon by spray nozzles 2a, drawn through a treatment zone by take-off rolls 5 and feed rolls 3 operating as described above, and finally cut into chips by a rotating blade 6.
Patent GB-1015359-A (GB)
Title: Telephone switching systems
IPC: H04Q3/62
Filed: 1962-09-04
Abstract: 1,015,359. Automatic exchange systems. WESTERN ELECTRIC COMPANY INCORPORATED. Sept. 4, 1962 [Sept. 5, 1962], No. 33807/62. Heading H4K. In a system in which a number of private branch exchanges located in the same building share switching equipment, the several incoming trunks assigned to each PBX terminate in incoming selectors over which calls are normally routed by way of an inward switching train to the required extensions, but if the incoming selector receives a particular digit, e.g. 0, the call is transferred over a link circuit to an attendant's position serving the PBX concerned. An outward switching train enables an extension to set up a call to the central office or over a link circuit to an appropriate attendant's position. Each link circuit comprises a trunk finder and a position finder in which the outlets of each level are assigned to the same PBX, the finders being set to the appropriate level under marking control from a call distribution circuit. The trunks may comprise two groups, e.g. an A group assigned to one PBX and an other group assigned to one or more different PBX's, five levels of the finders being allotted to one group and five to the other. First and second-choice finders may be employed to deal with the situation when the trunks of one or more PBX's become loaded more heavily than those of others. An attendant sets up incoming calls when requested by dialling or keying (with the aid of a registersender in the latter case) into the incoming selector, and provision is made inter alia for camping on a busy extension, for recalling the central office and for setting up a fresh connection while holding the incoming trunk. The incoming selectors are bidirectional, and normal post springs are actuated on the attendant level to effect transfer and also on a restricted service level to give a busy signal on calls dialled from the central office. Specification 917,939 is referred to.
Patent GB-640683-A (GB)
Title: Improvements in bicycle frames
IPC: B62M1/36
Filed: 1947-12-23
Abstract: 640,683. Cycle frames. OLDRIDGE, B. Dec. 23, 1947, No. 33916. [Classes 136 (ii) and 136 (iii)] In a bicycle frame in which each arm of the bottom frame member 11, adapted to support the axle of the rear wheel is provided with a separate bearing 11b for a crank shaft 12 for a chain drive sprocket 14, the arms of the member 11 are braced together by a cross-strut 38 only on that side of the bearings remote from the rear wheel axle. As shown in Fig. 4, the sprocket wheel 14 is keyed to the crank axle 12 at 15. A ratchet 16 is connected through a compression spring 21 to front and rear wheel brake wires 17, 18 so that by back pedalling both brakes are operated simultaneously. Fig. 5 shows a modification in which the sprocket wheel 14 is freely rotatable on the shaft 12 and the inner face 23 of its bearing 24 has teeth 25 engaging with teeth 26 on a clutch plate 27 splined at 28 to the crank shaft 12. The clutch is disengaged by a fork 29, mounted on a shaft 31 displaceable relative to a fixed sleeve 32 by means of a cable 34 connected to a control mounted on the handle bars. A rear wheel brake is actuated by means of a ratchet 36 and a connection 37.
Patent GB-507417-A (GB)
Title: Improvements in or relating to radio receivers
IPC: H04B7/005
Filed: 1937-12-08
Abstract: 507,417. Wireless receiving systems. BLUMLEIN, A. D. Dec. 8, 1937, No. 33997. [Class 40 (v)] Distortion due to undesired signals which have the same wave form as the desired signals but are of smaller amplitude and are relatively displaced in time, and are generally produced by reflection from large objects near the receiving aerial, is reduced or eliminated by developing a neutralizing signal from the desired signals and mixing the neutralizing signal with the received signals so that the undesired signal is cancelled out. The neutralizing signals are obtained from points in a delay network fed with the received signals. If the output of the delay network is mixed with the original signals second order " ghost " signals are obtained which are in general not important, but complete neutralization of the undesired signals may be obtained if the output of the network is fed back into the input circuit of the network. Modulation frequency output of a receiver subjected to reflected ray interference is fed in at 1, amplified in valve 7 and passes through valve 12 which has unity amplification. A delay network 3 which may consist of a chain of series inductances and shunt condensers or may be formed of a long solenoid wound on an insulated earthed metal tube, is also fed from 1 over connection 2. Points on the delay network are connected to the control grids of valves 16, 21, 26, whose gains are variable by means of resistances 20, 25, 30, and whose outputs may be connected by switches 31 to the anode of valve 7 or valve 12 depending upon whether the signal to be neutralized is negative or positive. The outputs of valves 16, 21, 26 are utilized to neutralize separate undesired signals or secondary undesired signals produced by a first correction. The amplitude of the delayed signal may also be controlled by connecting the anodes 17, 22, 27 to tapping-points on resistances 10, 14. When a reflected wave is greater than the direct wave at the receiving aerial, the control grid of valve 7‹is connected to a point in the delay network such that one of the correcting signals derived from valves 16, 21, 26 is advanced in time and the direct signal is neutralized. In a modification of the circuit shown, the lead 2 connected to the input of the delay network is connected to the anode of valve 12 through a condenser, the other connections being as shown. This arrangement functions to produce neutralization of the undesired signals without the production of secondary undesired effects. In a modification, Fig. 2 (not shown), the gain controls in the cathode leads of valves 16, 21, 26 are dispensed with and a potentiometer is connected between the anodes of valves 7, 12. The anodes of valves 16, 21; 26 are connected to independently adjustable taps on the potentiometer, thus permitting all available magnitudes of correction from full positive to full negative. Although described with reference to modulation frequency, the corrections may be applied in carrier or intermediate frequency circuits.
Patent GB-1511899-A (GB)
Title: Television line deflection circuit
IPC: H04N3/237
Filed: 1975-08-15
Abstract: 1511899 Cathode-ray tube circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 15 Aug 1975 [19 Aug 1974] 34059/75 Heading H4T In a known line deflection circuit in which a linearity correction coil L (Fig. 1) having a biasmagnetized core is connected in series with the line deflection coil L and in which, in order to correct for EAST-WEST (i.e. pincushion) distortion a field frequency modulator M is connected into the circuit to modify the envelope of the line sawtooth currnt iy, the inductance of the linearity correction coil L is made independent of the field frequency by means of a compensating current produced in the linearity coil. This arrangement removes lack of linearity at the beginning of the trace (such as shown in Fig. 2) and discussed with reference to Fig. 3 (not shown) due to variation of the inductance of the linearity coil which results when a great depth of modulation of the line deflection is required to correct pincushion distortion as, e.g. with colour display tubes having a deflection angle of 110 degrees and a deflection field distribution which provides coincidence of the beam landing points without the need for a separate convergence device. Fig. 4 shows one embodiment in which the required compensation current i 2  is produced by amplitude modulating a line sawtooth waveform as a function of field frequency with the parabolic envelope of the latter of opposite curvature to that of the current i y  and introducing this current via a winding L 2  on the core of the linearity coil. In a second embodiment (Fig. 5, not shown) the winding L 2  is connected in the circuit of the modulator M of Fig. I, which includes a modulation source V m  supplying a field frequency parabolic voltage having a minimum at the middle of the field trace time. The arrangement may be modified (Fig. 6, not shown) by replacing the capacitive voltage divider of the second embodiment by an inductive voltage divider formed by a tapping on L, and feeding the output of the modulation source V m  to the. circuit via a choke coil. Other forms of EAST-WEST modulator may be employed and it is stated that the counteraction of the EAST-WEST modulation of the deflection current iy by the current is, in practice, slight. In a further embodiment (Fig. 7, not shown) the i 2  current source is connected in parallel with the linearity correction coil L and the EAST-WEST modulation effected by a field frequency parabolic voltage superimposed on the D.C. voltage supply V b .
Patent GB-468337-A (GB)
Title: Improvements in process and apparatus for the electro-deposition of metals
IPC: C25C7/00
Filed: 1936-12-11
Abstract: 468,337. Electrolysis. CREMER, A. Dec. 11, 1936, Nos. 34134 and 34135. Convention dates, Dec. 12, 1935 and Nov. 21, 1936. [Class 41] In apparatus for the electrodeposition of metals comprising closely spaced parallel electrodes 3, 4 a portion of the electrolyte is withdrawn by a pump 29 and delivered through a pipe 30 to injectors 27 from which it is projected between the electrodes carrying with it the general body of the electrolyte in a regular stream which returns by a lower channel 19. A number of such circulating arrangements may be spaced along a trough-like cell, a part of the electrolyte passing in succession between each group of electrodes. The anodes are constituted by lead sheet coverings 4 on partitions 2 mounted on the base 16 ; the partitions are formed to provide a converging and diverging passage 26 near the injectors. Starting sheets 5 to receive the deposit are mounted over the cathodes 3 and fastened at 6. The cathodes are supported by a dished cover 13 having ribs 23 engaging grooves in porcelain blocks 25 to form a water seal. The cathodes are connected by a conductor 11, the end of which rests on a bus-bar section 7. The anodes are connected to a successive bus-bar section and thence to the anodes of the next group. The bus-bar sections may be bridged so as to short-circuit any group by keys 37. In a modification, a partition is arranged across the cell on the up-stream side of each group of electrodes and is provided with a single passage bounded by converging and diverging walls into which the injectors project. Specification 187,607, [Class 41], is referred to.
Patent GB-1512685-A (GB)
Title: Capillary vessel for collecting blood
IPC: G09F15/00
Filed: 1975-08-15
Abstract: 1512685 Blood sampling apparatus W SARSTEDT [trading as WALTER SARSTEDT KUNSTSTOFF - SPRITZ - GUSSWERK] 15 Aug 1975 [16 Aug 1974] 34144/75 Heading A5R [Also in Divisions B2 and G1] A capillary vessel 2 for extracting and containing approximately 300 microlitres of blood from a puncture or cut comprises a capillory nozzle 4 having a length of from 2 to 5 mm, a substantially cylindrical widened portion 6, a funnelled end 8 and a nozzle closure cap 10, whereby after filling of the vessel the cap 10 may be placed over the end of the nozzle and a micropipette inserted through end 8 to remove the blood or, alternatively the vessel may be centrifuged to separate the blood contents prior to their removal. An outer vessel 14 may be provided for use during transport or centrifuging and comprises a generally cylindrical casing having a closed and an open end and having a receiving pocket 22 formed in the closed end to receive the nozzle end of the capillary vessel sealed by the cap, and a press-in cover 24 for sealing the open end of the outer vessel 14 having a central protruding portion for sealing funnel end 8 of the capillary vessel. The nozzle cap 10 and cover 24 may be injection moulded integrally with the outer vessel 14 and removed therefrom by breaking frangible portions. An alternative form of outer vessel 14 disperses with a separate nozzle cap 10, the receiving pocket for the nozzle in the outer vessel acting to seal the nozzle.
Patent GB-1494987-A (GB)
Title: Magnetic record disc assembly
IPC: B30B11/20
Filed: 1976-08-17
Abstract: 1494987 Jackets for magnetic record discs INTERNATIONAL BUSINESS MACHINES CORP 17 Aug 1976 [23 Sept 1975] 34144/76 Heading G5R A jacket 22 of electrically insulating material containing a magnetic record disc 20 carries a layer 35 of electrically conducting material, e.g. conductive ink, for draining away electrostatic charges. The conductive layer 35 may be disposed between the inner surface of the jacket 22 and a record-wiping layer 34.
Patent GB-795437-A (GB)
Title: Improvements in or relating to vibrators for consolidating concrete and similar operations
IPC: B06B1/16
Filed: 1956-11-09
Abstract: 795,437. Vibrators for concrete, &c. AKTIEBOLAGET VIBRO-VERKEN. Nov. 9, 1956 [Nov. 11, 1955], No. 34240/56. Class 86 [Also in Group XXIV] A vibrator for consolidating concrete, &c. comprises an outer casing 1 which encloses an electric motor 3, 4 coupled by interengaging shafts 6, 8 to a vibration generator in the form of a bowl-shaped member 10 which locates a heavy ball 11 adapted to roll on a circular track 12 rigidly connected to the said casing and is provided with adjustable eccentric weights 13, 13 as shown. The stator 3 of the driving motor is also, rigidly connected to the casing 1, and the rotor 4 has an eccentric centre of gravity which is preferably produced by adjustable eccentric weights 15, 16 at the ends of the shaft 6 thereof, the displacement of the rotor being such that it will be caused to vibrate substantially synchronously with the stator.
Patent GB-675263-A (GB)
Title: Improvements in or relating to photographic apparatus for recording or optically copying on a support
IPC: G03B15/00
Filed: 1946-11-19
Abstract: 675,263. Photographic cameras. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Nov. 19, 1946 [May 22, 1943], No. 34311/46. Class 98 (i). A photographic camera or copying apparatus, in which an image is formed by a lens system on a glossy-surfaced photographic emulsion carried on a flexible support, and in which the emulsion surface is located in relation to the image surface of the lens system by being pressed against the surface of a flat transparent plate, is characterized in that the surface of the plate in contact with the emulsion is lightly frosted to prevent the formation of Newton's rings and is located at the image surface of the lens system.
Patent GB-1060676-A (GB)
Title: Improvements relating to the feeding of granular material from a storage bin to a delvery point
IPC: C03B3/00
Filed: 1964-08-21
Abstract: 1,060,676. Average-discharge mixing apparatus. CORNING GLASS WORKS. Aug. 21, 1964 [Aug. 21, 1963], No. 34325/64. Heading BIC. [Also in Division B8] A device for blending granular material having various particle sizes comprises a cylindrical storage bin 10 having a bottom discharge outlet 13, a box 15 having a top opening 22, Fig. 2 and two side openings 18, Fig. 3, therein and a pair of inclined pipes 23 communicating with the openings 18 and upwardly extending to positions adjacent the side wall 11 of the bin. In operation granular material is withdrawn simultaneously from both the central and edge portions of the material in the bin. The material may be that used for making glass, viz sand, fluorspar, alumina, borax, boric acid, sodium nitrate and arsenic, and may be discharged through a delivery tube 14 to a furnace. Flow of material is normally effected by gravity but may be assisted by vibratory means (not shown).
Patent GB-774470-A (GB)
Title: Improvements relating to hydraulic pit-props
IPC: E21D15/46
Filed: 1955-11-30
Abstract: 774,470. Pit-props. BECORIT GRUBENAUSBAU GES. Nov. 30, 1955 [Nov. 19, 1955]. No. 34352/55. Class 20(2) A hydraulic pitprop having a tubular upper prop member 2 telescoping within a lower prop member 1, the member 2 being openended at its lower end, has an annular member 8, flared upwardly, provided at the lower end of the member 2 and a hydraulic - liquid release valve 13 operable by a pivoted link 16 and draw bolt 17, at the upper end of the member 2. The upper and lower prop members are of relatively light gauge metal to assist scaling by expansion under pressure of the part of the member 2 above the annular member 8. A guard casing 3 is provided. Vents 22 limit the upward movement of the member 2 under pressure, the liquid passing into the guard casing and thence through a vent 23. The prop is charged through aperture 21 and liquid is discharged through vents 19 and 15, upon operation of the valve 13 to collapse the prop.