baber/WOPTO huggingface dataset:
Patent GB-876969-A (GB)
Title: Improvements in cord or chain operated electric pull switches
IPC: H01H17/16
Filed: 1958-11-26
Abstract: 876,969. Snap-action switches; retractive switches. SCHNEIDER, H. W. Nov. 12, 1959 [Nov. 26, 1958], No. 38165/58. Class 38 (5). A switch operated by a pull on a cord 6 comprises a base 1 carrying fixed contacts 2 in ratchet-like recesses and a cover 3 with tubular extension 11 housing a contact operating member 8 which has recesses to engage pawls 26 on a moving contact member 9. Spring arms 22 on member 9 alternately bridge and isolate contacts 2 as the member 9 is rotated in 90 degree steps by successive pulls on cord 6. The member 8 is rotatable on a ledge 18 in extension 11 and has slots 19 to accommodate arms 13 of a cord sleeve 7. Arms 13 are urged into engagement with helical faces 12 by a pre-stressed torsion spring 5 such that a pull on cord 6 causes the sleeve 7 to follow a helical path, thereby rotating member 8 and thus contact member 9. Multi-pole switches may be provided (Fig. 5, not shown) by adding bases 1 with associated contacts and coupled members 8. A retractive switch may be provided by bending the ends of fixed contacts 2 at right-angles and replacing moving contact member 9 by a simple metal bridge attached to member 8. Specification 644,265 is referred to.
Patent GB-1055744-A (GB)
Title: Improvements in radial arm drilling machines
IPC: B23Q1/40
Filed: 1963-09-27
Abstract: 1,055,744. Machine tool details. E. ARNDT, [trading as DONAU-WERKZEUGMASCHI NEN ERICH ARNDT]. Sept. 27, 1963 [Sept. 28, 1962], No. 38222/63. Headings B3B and B3C. The arm of a radial arm drilling machine is formed from two angle bars 1, 2 welded together at 3, and has rails 4 bolted thereon, the rails co-operating with ball bearings 5 for guiding the arm. Bearings 5 are supported in adjustable mounts and they are offset a distance X from the centre line of the side surfaces of the arm. The arm is arranged with the diagonal, of its cross-section lying vertically, or the arm and bearings may be turned through 90 degrees.
Patent GB-829645-A (GB)
Title: Sliver failure detection device for drawing frames for slivers of bast fibres
Inventor: FRASER HUGH
IPC: D01H13/16
Filed: 1956-12-15
Abstract: 829,645. Stop-motion for drawing frames. FRASER & SONS Ltd., D. Nov. 29, 1957 [Dec. 15, 1956], No. 38313/56. Class 120(2) A stop-motion for a drawing frame for slivers of bast, consists of forwarding rollers between the sliver roll and the main feed rollers of the drawing frame: the forwarding rollers are normally spaced apart by the sliver, are electrically conducting and are incorporated in a circuit with the operating mechanism of the frame, at least one of them being insulated from the frame. In Fig. 4 the forwarding rollers 6, 7 are in a secondary circuit supplied by a transformer: the roller 7 is insulated from the frame and the roller 6 and a relay coil 20 are earthed to it. When the sliver 4 breaks, the rollers contact and the coil is energized to open a contact 18 to stop the motor. Manual start and stop switches 21, 22 are provided. In Fig. 1, the sliver roll 1 is mounted on rollers 2, 3 and the sliver passes to feed rollers 5 over a guide 14 between the rollers 6, 7 and a plate 8. The roller 6 is driven and two of them may be carried by a common bracket: each co-operates with two rollers 7 each furnished with a guide 14 and both carried by a T-bracket pivoted so that they may be accommodated in a bracket. A second driven roller may be provided, acting with the other driven roller 6 as a cradle for the roller 7.
Patent GB-303369-A (GB)
IPC: H01J9/04
Filed: 1928-12-29
Abstract: 303,369. Soc. Anon. des Etablissements Industriels de E. C. Grammont et de A. Grammont. Dec. 31, 1927, [Convention date]. Vacuum tubes.-The cathode of an electron discharge device is provided with highly emissive material by first rendering it porous by heating in a gas, coating it with the emissive substance, such as barium, thorium, caesium or salts thereof, and then restoring it to its original condition, metals suitable for this purpose being those capable of occluding large quantities of gas, such as platinum or palladium. In the case of these metals, the porous condition is induced by the occlusion of hydrogen which occurs when a wire is heated, for example electrically, in an atmosphere of this gas, the filament being then coated by electrolysis, immersion &c. with an active material and afterwards heated in vacuo to a dull red heat. The cathode need not consist entirely of platinum or palladium but may be constituted by a tungsten base coated with either of these metals by electrolysis or wire drawing. After the deposition of the emissive material, expulsion of the occluded gas may be effected by laminating or wire drawing; this procedure may be repeated. As emissive materials, barium, thorium or caesium, their salts or a mixture of these may be employed. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the removal of the occluded gas by heating the metal in a gas capable of combining with that occluded. This subject-matter does not appear in the Specification as accepted.
Patent GB-345238-A (GB)
Title: Improvements in and relating to processes for nitrogenising alloys of iron and steel
IPC: C23C8/26
Filed: 1929-12-16
Abstract: 345,238. Hardening by nitrogenization. KRUPP AKT. - GES., F., Essen, Germany. Dec. 16, 1929, No. 38477. Convention date, Dec. 20, 1928. [Class 72.] In the nitrogenization of iron and steel alloys a violent motion is imparted to the gas within the nitrogenization chamber. The objects may be placed in a container A inserted in a furnace B and the gas, introduced at C, is violently agitated by a propeller E mounted inside the container. In the modification shown in Fig. 2 the gas introduced through a tube F and nozzle G, draws the gas already in the container through orifices K and a pipe J, maintaining the gas in constant motion. The agitation may be produced by a pump or fan arranged outside the container. Specifications 243,613, 272,182, and 287,156, [all in Class 82 (i), Metals, Extracting &c.], are referred to.
Patent GB-1311297-A (GB)
Title: Precision variable-resistance high resistance devices for high frequency use
IPC: G01R27/26
Filed: 1970-08-11
Abstract: 1311297 Measuring dielectric constant TODAI MUSEN K K 11 Aug 1970 [15 Aug 1969 16 June 1970] 38668/70 Heading G1U [Also in Division H1] A capacitor and resistor assembly providing a standard variable high resistance suitable for use in measuring dielectric constant and loss angle of an insulator at high frequencies comprises two parallel plate capacitors of capacitance C 1  and C 2  the adjacent plates of the capacitors being constituted by metal layers on opposite surfaces of plate 2 of dielectric material, or alternatively by a single metal plate, Figs. 5A and 6A (not shown), plate 2 or the single plate being displaceable at right angles to the parallel electrode plates by measurable small distances, and a resistor R 5 , Figs.1B and 1C (not shown) and Fig. 4, being connected in parallel with capacitance C 2 . Preferably R 5  and C 2  are chosen so that (2#f)<SP>2</SP> C 2 <SP>2</SP> R 5 <SP>2</SP>  1 wherein f is frequency. As shown, the other plate of capacitance C 1  is common to a fixed capacitor comprising metal layers on plate 1 of dielectric material of dielectric constant # s , as is the material of dielectric plate 2. The other electrode of capacitance C 2  is a metal layer on dielectric disc E and is earthed. It is shown that for small displacements #t of plate 2, the capacitance between terminals T 1  and T 2  does not vary but the resistance Rpx between the terminals varies with the displacement according to the relationship:- wherein # 1  is the dielectric constant of the fluid dielectric of capacitors C 1  and C 2 , t s =t s1 +t s2 , the thicknesses of plates 1 and 2 respectively and t 1  and t 2  are the electrode spacings before displacement of capacitors C 1  and C 2  respectively. To measure the resistance R x  of a test substance of capacitance C x , Fig.4, the circuit is tuned with switch S open using capacitor C v , then tuned again with switch S closed. Plate 2 is now displaced until the current flowing in the detector circuit rises to the value it had at the first tuning. Then R x  is given by:- which may be simplified by making t 1  = t 2  and having air as the fluid dielectric. Minor variations of the capacitor-resistor assembly, Figs. 5A and 6A (not shown), and measuring circuit, Figs. 5B and 6B (not shown), are disclosed.
Patent GB-1349049-A (GB)
Title: Oscilloscope free running and triggered synchronization  sawtooth voltage control circuit system
IPC: G01R13/32
Filed: 1972-08-18
Abstract: 1349049 Sawtooth wave generators TESLA NARODNI PODNIK 18 Aug 1972 [10 Sept 1971] 38683/72 Heading H3P In a sawtooth generator of the type in which the input to bi-stable circuit 1 is supplied by an integrator 3 to effect switching thereof when the integrator output reaches a given value and in which the output of the bi-stable circuit controls the input of the integrator, operation in free running, synchronized free running and triggered modes is selected by a bias provided for a diode 2 at the input of the bi-stable circuit and derived from a potentiometer 23, 24. With a high negative bias the output from the differentiating capacitor S connected to the synchronizing pulse amplifier 5 is blocked and the circuit is free running and unsynchronized. With a much lower bias the bi-stable circuit is held in its quiescent state until a triggering pulse is received. At bias levels between these two the circuit is held quiescent, after completion of a cycle, for a time dependent upon a capacitor 23 or a capacitor 26.
Patent GB-1034344-A (GB)
Title: Improvements in or relating to glass-ceramics
Inventor: MCMILLAN PETER WILLIAM
IPC: C03C10/00
Filed: 1962-10-12
Abstract: In the method of forming a glass ceramic article as in Claim 1 of the parent Specification, the heat treatment comprises heating to a final crystallization temperature in the range 500 DEG  to 849 DEG  C., and not higher than that at which the lowest-melting-point phase begins to melt, for a period of at least one minute to form an article at least partially, but not predominantly, crystalline.  Reference has been directed by the Comptroller to Specifications 943,599 and 924,996.
Patent GB-1501245-A (GB)
Title: Gettering contaminants in monocrystalline silicon
IPC: H01L21/306
Filed: 1975-09-23
Abstract: 1501245 Semi-conductor device manufacture INTERNATIONAL BUSINESS MACHINES CORP 23 Sept 1975 [9 Dec 1974] 38901/75 Heading H1K The fast diffusing metal contaminants Au, Cu, Fe and Ni are gettered from a monocrystalline silicon body by anodically treating the body in an aqueous solution to form a region of porous silicon on at least one surface and then annealing in a non-oxidizing atmosphere to drive the contaminants to the porous region. Preferably the anodic treatment is in a 25% aqueous HF solution and produces a layer of 56% porosity 8 Á thick and the annealing effected by heating in nitrogen, argon, or helium, e.g. at 1000 C. for 1 hour. The gettering effect can be enhanced by introducing a dopant into the body via the porous layer to a concentration exceeding the solid solubility limit prior to annealing. After annealing the porous silicon is either covered with a layer of pyrolytic silica or removed by an HF etch containing a chelating agent. In one method the anodic treatment is restricted by oxide masking so that the porous silicon forms a pattern of closed figures. A silicon layer formed over the patterned surface after annealing and oxidation of the porous silicon thus has polycrystalline regions, in register with the porous regions, which are oxidized to mutually isolate devices formed in the remaining monocrystalline parts of the layers and to carry interconnecting layers of metallization.
Patent GB-1023054-A (GB)
Title: A speed-sensitive control system for a railway car retarder or the like
IPC: B61L17/02
Filed: 1963-10-03
Abstract: 1,023,054. Hump yard control systems. AMERICAN BRAKE SHOE CO. Oct. 3, 1963 [Oct. 3, 1962], No. 38970/63. Heading . B7N. [Also in Divisions G1 and H3] A railway car retarder comprising at least one pair of brake shoes 13 (Fig. 1) is operated by an electrical control system 18 which receives from a vibration-sensitive transducer 17A or 17B attached to the rail a signal whose frequency depends upon the speed with which a car wheel travels over a series of equally spaced discontinuities 16, such as notches, ridges or grooves in .the rail surface. An automatic switch circuit 21 selects the transducer giving the higher amplitude output and applies this to a compressor amplifier and clipper 22, 23 which supply to an adjustable filter 24 a varying frequency signal of substantially constant amplitude. The filter 24 may be set to have a frequency cut-off corresponding to any desired speed (e.g. 4 m.p.h.) and if the car is travelling faster than this the filter gives no brake inhibiting output to a driver amplifier 25. At the same time the output from the compressor amplifier also flows via the low and high-pass filters 28, 29 whose cut-off frequencies respectively determine the maximum and minimum car speeds to which the noise amplifier 31 will respond. An associated noise relay consequently operates the signal relay and control 26 and hence the brake relay 27 provided that a car is approaching within the limits of these speeds, e.g. 3 to 15 m.p.h. When the car is retarded to the required speed of, say, 4 m.p.h., the filter 24 provides a significant drive signal to the signal relay 26 and de-energizes the brake relay to allow the car to continue at that speed. The high pass filter 29 serves to remove the effect of extraneous low frequency signals arising for example from wheel flat spots, the car travelling over points &c. The low pass filter removes undesirable harmonics in the transducer signal, which could operate the brake with no car approaching, but it is shorted out by the signal relay 26, when this operates, in order to increase the holding signal supplied to the noise relay and thus to avoid relay chatter should the signal level momentarily drop. The automatic level' switch 21 also provides a safety output (91, Fig. 2, not shown) which operates the brake if a car travelling faster than 15 m.p.h., the limit of the low pass filter 28, should approach. In the slightly modified system of Fig. 6 (not shown), the adjustable filter 24 serves also as the low pass filter in the noise channel, and filter 28, Fig. 1, is dispensed with, the operation of this layout being otherwise substantially as above.
Patent GB-1453410-A (GB)
Title: Papermaking machines
IPC: D21F1/48
Filed: 1975-09-23
Abstract: 1453410 Paper-making apparatus ESCHER WYSS GmbH 23 Sept 1975 [2 Oct 1974] 38978/75 Heading D2A In a paper-making machine, such as the cylinder machine shown, having a stock inlet 1 and a tank 30 for collecting stock overflowing from the wire or screen at the inlet, the tank having a return line 26, the pressure in a vacuum box 11 is controlled in accordance with the level of stock in the tank 30 whereby the web forming on the wire or screen is uniformly dewatered. As shown the level is sensed by a pressure sensor 23 whose output is compared at 21 with a reference value and used to control a valve 18 in the vacuum line 17 to the vacuum box 11. The output of the senser 23 may also be used on line 22' to control the action of a refiner and drier. The volume flow rate of stock to the inlet 1 is maintained constant by a senser 8 whose output controls the speed of a motor 6 for a pump 5 in the stock supply line.
Patent GB-884469-A (GB)
Title: Improvements in light polarisers and methods of making them
IPC: G02B5/30
Filed: 1959-11-17
Abstract: 884,469. Laminates. AMERICAN OPTICAL CO. Nov. 17, 1959 [Dec. 18, 1958], No. 38998/59. Class 140. [Also in Group XX] A stretched polarizing film comprising a polymer containing free hydroxyl groups such as polyvinyl alcohol, polyvinyl butyral or surface hydrolysed cellulose acetate which has been dyed or stained to make it light polarizing is immersed in a solution of silicic acid in water and alcohol for a few seconds and the stretched film is then applied to a glass surface, e.g. a lens surface. As shown in Fig. 7, the film 11 is placed over a glass article 10 supported on a web 29 and a vacuum is created in the cavity 28 of the holder 25, which is provided with a pipeline 33 for this purpose, so that the film is drawn against article 10. During this time, hot, dry air at approximately 150‹ F. is blown through a nozzle 34 on to the film so that the film is dried and adheres to article 10. The assembly is then placed in an oven 36, Fig. 8, which is heated by electrical heating coils 38, 39 to a temperature of about 175‹ F. to ensure strong adhesion of the film 11 to the article 10.
Patent GB-346335-A (GB)
Title: Improvements in illuminated signs for advertisement, traffic guidance and like purposes
IPC: E01F9/08
Filed: 1929-12-20
Abstract: 346,335. Pavement lights. CROXFORD, G. R., 36, Nightingale Road, Hampton-on-Thames. Dec. 20, 1929, No. 39035. Drawings to Specification. [Class 20 (iii).] A traffic guide line or sign is formed of a number of independent units embedded at spaced intervals in a road or other exposed surface, each unit comprising a small transparent or translucent slab secured in ' a watertight manner above a lamp container. Each unit is rendered watertight by washers of pitch, wax, rubber &c., which are inserted between its component parts, undercut grooves being provided if necessary to ensure complete sealing ; the edge of the translucent slab, which may have a curved or ribbed upper surface and may incorporate a metal grating, is preferably protected by an upstanding rubber washer surrounding it. The units may be mounted flush with the road surface by means of pitch, &c., the intervening space being painted white or filled with opaque blocks or aluminium strips. Specification 266,394, [Class 3 (ii), Advertising &c. other than by moving &c.], is referred to.
Patent GB-1429059-A (GB)
Title: Bottom dump vessels
IPC: B63B35/30
Filed: 1973-08-17
Abstract: 1429059 Hopper barges BAGGERMAATSCHAPPIJ BOS & KALIS BV 17 Aug 1973 [21 Aug 1972] 39084/73 Heading B7A The two halves 1, 2 of a hopper barge are moved about a hinge 6 between an open and a closed position by a screw or hydraulic jack 8 and a lever system comprising levers 11, 14 connected to pivots 10, 13 on the jack and 12, 15 on the halves 1, 2 respectively and a third member interconnecting the levers 11 and 14. The third member may comprise either a connecting rod having pivots 19, 20 at respectibe ends which are connected to the levers 11, 14 either directly or indirectly by way of arms fixed on levers 11, 14, or two rods fixed to levers 11, 14 respectively and pivotally interconnected in the vertical plane containing the barge's centre line. A second oblique connecting rod 18 may interconnect the levers 11, 14.
Patent GB-876897-A (GB)
Title: Fluid flow rate measuring device
IPC: A61M39/28
Filed: 1959-11-19
Abstract: 876,897. Surgical injection apparatus. GALASYN Inc. Nov. 19, 1959 [Nov. 21, 1958], No. 39302/59. Class 81 (2). [Also in Group XXIX] A flow meter (see Group XXIX) is included in an intravenous injector unit. The intake fitting 26 of the flow meter is attached to an intravenous bottle 12 and a flexible discharge tube 50 carries an injection needle 70. A flow control clamp 84 is provided.
Patent GB-919621-A (GB)
Title: An electro-hydraulic valve controlled actuating device
IPC: F16K31/42
Filed: 1959-11-23
Abstract: 919,621. Valves. LICENTIA PATENTVERWALTUNGS-G.m.b.H. Nov. 23, 1959 [Nov. 25, 1958], No. 39649/59. Class 135. In a pilot-operated hydraulic valve assembly for controlling a piston 1, the spring-loaded main valve 2 controls the supply and exhaust ports 3, 20 of the piston and is integral with a piston 9 which controls throttling orifices 7 in the flow path of the pressure oil from a duct 4. The pressure oil normally leaks-off via the partially open orifices 7, the annular passage 8 in the piston 9, the orifices 10, the bore 11, the throttling orifice 12 and the solenoid-operated leak-off needle valve 5, 14. On energization of the solenoid 15 the leak-off valve 5, 14 is closed and the consequent build-up of pressure causes the pistons 2 and 9 to move to the left. During this movement the orifices 7 are gradually fully opened before the inlet ports 3 are opened, then the orifices 7 are gradually closed to the initial extent. This ensures that the pistons 2, 9 start and end their movement slowly, the piston-rod 21 eventually abutting the stop 24. The stepped diameter needle valve 14 may be replaced by a cylindrical pin-like needle valve.
Patent GB-1203656-A (GB)
Title: Reacting or drying apparatus
Inventor: KUEHNE HEINZ
IPC: B01F27/93
Filed: 1967-08-31
Abstract: 1,203,656. Chemical reaction apparatus; mixing apparatus. VICKERS-ZIMMER A.G.- PLANUNG UND BAU VON INDUSTRIEANLAGAN. 31 Aug., 1967 [24 Sept., 1966], No. 39810/67. Headings B1X, B1C and B1F. [Also in Division F4] Chemical reaction (e.g. polycondensation) apparatus comprises jacketed container 2 having cover and bottom portions, supply connection 14 and extraction connection 15 as shown, rotatably mounted shaft 3 on which are disposed alternately and coaxially flat rings 4 and discs 5, each disc having a diameter at least equal to the inner diameter of a ring and less than the outer diameter of a ring, and non-rotatable stripper means for the rings (21 in Fig. 2 not shown), and for the discs (32 in Fig. 3, not shown). The apparatus shown includes for each ring or disc non- rotatable vertically adjustable distributor means (20, 28 in Figs. 2, and 3), non-rotatable mixing combs 17, and guide rings 18, 19 either welded to the ring or disc or secured to the stripper, distributor and mixing combs for the ring or disc. In use, a mass undergoing reaction is moved by the strippers inwardly off each ring and outwardly off each disc. The bottom surfaces of the rings and discs may be provided with heat exchange chambers communicating with ducts in shaft 3, and a gaseous heat carrier may be fed through the container countercurrent to the mass flow.
Patent GB-1217255-A (GB)
Title: Improvements relating to weighing scales
IPC: G01G21/28
Filed: 1968-08-20
Abstract: 1,217,255. Weighing apparatus. WESTDEUTSCHE WAAGENFABRIK FREUDEWALD & SCHMITT. Aug.20, 1968 [Feb.16, 1968], No.39839/68. Heading G1W. Weighing apparatus intended for wall mounting comprises a vertically movable carrier frame 7 which extends downwardly from a housing 4 and in which free ends of an upwardly hingeable carrier bracket 9 supporting a scale pan 14 engage in a resilient manner, the carrier bracket being arranged to define an opening in which the bottom of the pan can be removably located. As shown, the carrier bracket 9 is generally in the form of an open loop having a pair of longitudinal side portions connected to rear end portions (12) Fig.1 (not shown) and by oblique portions 13 to a front portion 11, the rear end portions being supported in aligned holes of a U-shaped member defining the carrier frame 7. The carrier frame 7 is provided with stops 18 and 20 against which the bracket 9 abuts when located respectively in its open position in which the scale pan extends at right angles to the housing 4 for weighing purposes and in its closed position in which the scale pan lies flush with a transparent wall 6 of the housing. A dial and pointer is visible through the wall 6 during weighing operations.