baber/WOPTO huggingface dataset:
Patent GB-645122-A (GB)
Title: Improvements in and relating to electric discharge devices
IPC: H01J61/073
Filed: 1945-09-07
Abstract: 645,122. Discharge lamps. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 7, 1945, No. 23132. Convention date, Sept. 11, 1944. [Class 39 (i)] A positive column discharge lamp comprises at least one electrode having front and rear members 8, 18, Fig. 2, of refractory sheet metal such as tantalum or tungsten, the front member 8 facing the discharge being disc-like, and the dished rear member 18 being electrically connected to the front member in such a way that heat conduction between the two members is restricted. In Fig. 2 the lead wire 9 is spotwelded to the centre of disc 8 which is also slightly dished, and the centrally apertured dished member 18 is carried by wire 19 from wire 9. The free end of lead 9 is spot-welded at 10 to the flattened side of the lead 6. In a modification, Fig. 3, the front member 8 is secured to the rear member 18 by a refractory wire 22 which is spot-welded in a diametrical position to front member 8 and has bent up ends spot-welded to the outside of the rear member 18. In this case the rear member 18 comprises a flat portion 21 and an annular portion 20. The electrode is carried by stout wire 9 from lead-in wire 6. The lamp may operate on A.C. or D.C. and may have one or two electrodes as shown in Figs. 2 or 3. In Fig. 1, the device has a borosilicate glass or quartz envelope 1, main electrodes 8, 8 and an auxiliary starting electrode 3. The filling is mercury and/or an inert rare gas such as argon, krypton, or xenon, and in operation the mercury vapour may be saturated or unsaturated. If argon is used it may have a pressure of 17 mm., and the mercury vapour may have a pressure of one or one and a half atmospheres, or more, so that the discharge is a constricted arc. The envelope 1 has reduced ends around the electrodes from which still further reduced necks 5 incorporating graded seals project. Member 18 has a smaller radius of curvature than member 8 ; they are both spherical segments. The lamp of Fig. 1 may be operated in any position from horizontal to vertical, but a modified form, Fig. 5 (not shown), must be operated in a vertical position. The lamp of Fig. 5 (not shown), is enclosed in an outer glass jacket filled with nitrogen at a pressure of half an atmosphere. In both embodiments the front disc 8 may be flat instead of dished, and is designed so as to obtain a uniform temperature distribution over its surface so as to avoid hot spots. The Specification as open to inspection under Sect 91 states that the front member 8 may be triangular, rectangular, or otherwise polygonal, need not be flat on either major face, and.may be used alone without the rear member 18. This subject-matter does not appear in the Specification as accepted.
Patent GB-167960-A (GB)
Title: Improvements in the take-up mechanism of looms for weaving
IPC: D03D49/20
Filed: 1920-08-07
Abstract: 167,960. Oldroyd & Sons, Ltd., M., and Beaumont, G. Aug. 7, 1920. Take-up motions.-The friction roll of a loom take-up mechanism is rotated alternatively " positively " or " negatively." In order to move the friction-roll positively, at one side of the loom, at the end of the shaft a<1> of the friction roll a, a worm-wheel g, Fig. 2, is connected detachably to the shaft a<1> by a spring plunger on a collar h, and the worm shaft l is similarly connected to a hand-wheel k by a plunger n. At the other side of the loom, the shaft a<1> carries a wheel o, Fig. 3, connected by gearing p, q, r to a ratchetwheel s; a part v is moved, for example, by an attachment to the lay sword, so as to move the catch t in a non-operative direction, and a spring w attached to the lever u moves it so as to rotate the wheel s, the friction roll a, and the cloth roll c, as in an ordinary negative take-up. When the positive take-up is in use, the catch t may be placed on a holder x; when the negative take-up is to be used, the catch t is removed from this holder, and the spring plunger is withdrawn from the worm-wheel g.
Patent GB-693769-A (GB)
Title: Improvements in or relating to carrier telegraph systems
IPC: H04L27/06
Filed: 1950-09-22
Abstract: 693,769. Receivers for carrier telegraph. systems. STANDARD TELEPHONES & CABLES, Ltd. Sept. 14, 1951 [Sept. 22, 1950], No. 23293/50. Class 40 (iii). In a receiving circuit for an amplitude modulated carrier telegraph system comprising means for deriving a biasing potential from the received signals to be combined therewith in order to maintain in the combined signal the correct instants of transition between marks and spaces, means are provided for deriving two sets of such biasing potentials utilized respectively for effecting the transition from space to mark and from mark to space. As indicated, the incoming wave-form. Fig. 1 (B) is reversed, advanced in phase, and modified in amplitude to produce a wave-form C1 whose amplitude at the changes from space to mark V is - -. Similarly a second wave-form c2 2  delayed in phase relative to the incoming wavev form has amplitude - - at the transitions from 2 mark to space. These wave-forms are combined to form a wave-form c3, indicated by the dotted line in Fig. 1 (C), having an amplitude equal to the greater of the amplitudes of the wave-forms c1, c2 at any particular point. Such wave-form is combined with the original wave-form, Fig. 1 (B), to produce a wave-form, Fig. 1 (D), whose instants of transit agree with those of the original square wave-form, Fig. 1 (A), produced at the transmitter. In the circuit arrangement, Fig. 2, the received waveform at terminals T1, T2 is applied to two delay networks L1, C1 and L2, C2 in series producing solely a phase change so that relative to the wave-form appearing at terminals T3, T4, the potentials appearing across potentiometers R1, R2 are advanced and retarded. With reversal and amplitude limitation these wave-forms provide the wave-forms c1 c2. Portions of the potential appearing across potentiometers R1, R2 are fed via rectifiers X1, X2 to the same electrode of a capacitor C3 with a shunt resistor R3 having a time constant such that the condenser remains charged up to the stronger bias wave at any instant, thus producing the wave-form c3 applied to the terminal T4 in combination with the original wave-form applied at terminals T3, T4. The second delay network L2, C2 may be omitted, the wave-form c2 following the wave at T3, T4 without delay and the condenser C3 being utilized to produce the mark to space bias and the time constant of the combination C3, R3 being adjusted to furnish the correct biasing potential at the signal instants. A single battery B1 applies a spring bias via rectifier X3 to terminal T4 in the absence of any other potential. Specification 683,612 is referred to.
Patent GB-745423-A (GB)
Title: Improvements in or relating to electric discharge lamps
IPC: H05B41/39
Filed: 1951-10-08
Abstract: 745,423. Automatic control systems. LOEWE OPTA AKT.-GES. Oct. 8, 1951 [Oct. 9, 1950], No. 23340/51. Class 38 (4). [Also in Groups XXXVI, XL (a) and XL (b)] A discharge lamp having a long after-glow luminescent coating on the inside or outside of the lamp tube is incorporated in a circuit for intermittent operation of the lamp, a photo-cell being provided near the luminescent coating, the circuit of which includes a relay effecting the switching-on of the discharge current when the luminous intensity of the coating has fallen below some limit. The photo-cell can be arranged in the lamp tube and can have a surface area of less than 1 sq. cm. Thyratrons or intermittently charged condensers can be used in the lamp circuit. The current source can be a battery such as a tablet-fed battery or a voltaic pile. After a period, fixed, e.g., by means of a time-relay, or after the luminescent coating has reached a definite luminous intensity, the discharge current is switched off, e.g. by means of the photo-cell referred to or by another photo-cell. The arrangement can be such that the ratio of the discharge current periods to the after-glow periods is smaller when the lamp is used in dark surroundings for current economy, whereas for advertizing on and off periods of one or some seconds duration can be used. The photo-cell can be provided with two light reception surfaces providing 'differential operation, one surface being irradiated by the luminescent coating of the lamp tube and the other by the surroundings of the lamps, e.g. the photo-cell can consist of a metallic base coated on each side with a lightsensitive semi-conductor layer, e.g. a layer of selenium or a selenium compound, each carrying a current collecting electrode. Ultra-violet light from the luminescent coating can excite phosphors on surfaces near the lamp.
Patent GB-717694-A (GB)
Title: Improvements relating to apparatus for conveying grain and like materials
IPC: B65G27/00
Filed: 1951-10-08
Abstract: 717,694. Sifting apparatus. PERRY, T. J. Oct. 8, 1952 [Oct. 8, 1951], No. 23380/51. Class 117 [ALso in Group XXX] In jigging :apparatus for conveying and sifting grain a light-weight trough 10, Fig. 1, is supported by saddle members 13, Fig. 5, attached to spindles 14 which project on each side thereof and engage bearings 20 secured to the lower ends of resilient leaves 18. These leaves are made preferably of synthetic resin impregnated ash wood and are suspended from brackets 16. The trough is connected by a link 29 to a pivoted slotted lever 26, Fig. 4, which is engaged by a ball race 32 mounted eccentrically on a rotary disc 21. The direction of conveying is reversed by attaching the link to the trough at the point 34 and reversing the direction of rotation of the disc. An open-topped casing 36 containing inclined screens 38, 39 of different meshes is mounted on the trough. Grain passes through these screens on to a fine mesh screen 42 forming the floor of the trough. Dust passes through the screen 42 into a casing 43 from which it is discharged through a shoot 44. Large size undesirable material is removed by the screen 38 and discharged through a shoot 40 while smaller particles of similar material are separated by the screen 39 and discharged by the shoot 41.
Patent GB-333376-A (GB)
Title: Improvements in hydraulic piston packing
IPC: F16J15/16
Filed: 1929-07-30
Abstract: 333,376. Scharnberg, H. J. B. July 30, 1929. Piston packing.-The angle of a cup-leather 3 for an hydraulic press is supported by a ring 18 of copper, brass, or other ductile metal, which has a concave face to fit the leather. The cupleather is expanded by a split ring 4, having overlapping ends and adjustable by means of a screw 11, which engages by means of collars 11<1>, 12 with a lug 9 at one end of the ring and screws into a lug 10 at the other end.
Patent GB-918242-A (GB)
Title: A connection between a tubular shaft and the fork member of a universal joint particularly for use in propeller shafts
IPC: F16D1/072
Filed: 1959-07-08
Abstract: 918,242. Securing universal joint members on Shafts. GELENKWELLENBAU G.m.b.H. July 8, 1959 [Jan. 27, 1959], No. 23431/59. Class 80 (2). A coupling between a tubular propeller shaft 1 and universal joint fork 5 comprises a flange 2 bent from the shaft 1 and clamped between a clamping member 3 and flange 4 of the fork 5 by bolts 6, the flange 2 or member 3 being serrated to increase the frictional grip. The bolts may pass through the flange 2 to provide a positive coupling. In Fig. 3 (not shown) the flange is formed on a separate tubular member which is welded to the propeller shaft. In Fig. 4 an inwardly-directed conical flange is bent from the shaft 1 and clamped between a clamping member 9 and coned surfaces of the fork 5 by a bolt 10. In Fig. 5 (not shown) the flange is conical and outwardly directed. In Fig. 7 (not shown) a sleeve is provided between the clamping member and flange. The universal joint fork member may be plastic.
Patent GB-1195928-A (GB)
Title: Conveyor Mechanism for Use in the Production of Wirebars.
IPC: B22D45/00
Filed: 1968-05-16
Abstract: 1,195,928. Endless conveyers. COPPER REFINERIES PTY., Ltd. 16 May, 1968 [5 June, 1967], No. 23457/68. Heading B8A. [Also in Division B3] Copper wirebars 12 are dumped from a mould 5 into a water-filled quenching pit 4 (Fig. 3) and fall on to an endless conveyer. The conveyer has three parallel adjacent flights 7, 8, 9 and is protected from the impact of the falling wirebars by a slab 13. After cooling in the quenching pit the wirebars are raised by the conveyer to an inspection station 17 at bench height. The outer conveyer flights 8, 9 end before the inspection station 17, so two slatted belts 21 are provided to push the wirebars on to the central flight 7. The slatted belts 21 are connected to the conveyer drive by a sprocket and chain 22, 23 and move at the same speed as the conveyer flights.
Patent GB-969936-A (GB)
Title: Process for the production of purified enzyme preparations
Inventor: ZIEGLER FRITZ
IPC: C12N9/00
Filed: 1962-06-19
Abstract: Purified enzyme preparations are obtained by treating a crude enzyme solution with tannin to precipitate the tannin-enzyme precipitate, as well as biologically-inert materials present in the original solution, separating and extracting said precipitate with an aqueous solution of a water-miscible organic solvent containing 20-80% water to recover a tannin-enzyme-containing extract therefrom, and precipitating the tannin-free enzyme from said extract by the addition thereto of a water-miscible alcohol or ketone. The precipitate may be water washed prior to extraction.  Specified water-miscible organic solvents are alcohols, glycols, glycolethers, ketones, hydroxy dialkyl ethers, dioxan, tetra-hydrofuran, lactic acid ethyl ester and formamide. Specified enzymes which are purified are lichenase, protease, amylase, mushroom protease and trypsin.
Patent GB-707204-A (GB)
Title: Improvements in or relating to magnetic cores for electrical inductance devices
IPC: H01F3/08
Filed: 1952-09-19
Abstract: 707,204. Magnetic cores. WESTERN ELECTRIC CO., Inc. Sept. 19, 1952 [Oct. 5, 1951], No. 23572/52. Class 38 (2) A core for electrical induction apparatus is in the form of a closed ring made from a single crystal of a cubic ferrite or other non-metallic ferromagnetic material. The core limbs lie along the directions of easy magnetization of the crystal. F:g. 2 shows a rhombic core cut from a crystal of Fe 3 O 4 , lying generally in a [110] plane with the limbs of rectangular cross-section extending in [111] directions. When unmagnetized, each limb is divided into two domains by Bloch walls extending as shown in Figs. 3A or 3B, magnetization causing one domain to grow in volume at the expense of the other. By chamfering the edges of the limbs, the position of the Bloch walls is made more stable.
Patent GB-300730-A (GB)
Title: Improvements relating to coal and like cutting machines
IPC: E21C35/04
Filed: 1927-09-08
Abstract: 300,730. Anderson, A., and Anderson, Boyes, & Co., Ltd. Sept. 8, 1927. Coal-cutting machines.-A coal-cutting machine of the chain type is provided with a scraper 4 of less depth than the cut and approximately as long as the jib 2, whereby a heap of cuttings is maintained in the cut adjacent to the jib to form a blanket enclosing the zone in which cutting is being effected, so as to lessen the risk, or prevent the spread, of explosions originating at the cutters. Reference has been directed by the Comptroller to Specifications 116,231 and 116,744.
Patent GB-1491284-A (GB)
Title: Preparation of dimethyl terephthalate
IPC: C07C51/265
Filed: 1975-05-30
Abstract: 1491284 Preparation of dimethylterephthalate TEIJIN HERCULES CHEMICAL CO Ltd 30 May 1975 23681/75 Heading C2C A process for preparing dimethyl terephthalate comprises oxidizing p-xylene and/or methyl p-toluate with molecular oxygen or a molecular oxygen-containing gas in the presence of a heavy metal catalyst, esterifying the resulting oxidation reaction mixture with methanol, followed by submitting the resulting esterification reaction mixture to distillation to separate dimethyl terephthalate and fractions of lower boiling point than dimethyl terephthalate, and then recycling to said oxidation step (A) a distillation residue containing said heavy metal catalyst and/or (B) an extract portion containing said heavy metal catalyst obtained by an extraction treatment of said distillation residue (A), the distillation residue (A) or said extract (B) having been treated with methanol prior to recycling same.
Patent GB-651784-A (GB)
Title: Apparatus for producing a gaseous drying medium
IPC: F26B21/00
Filed: 1947-08-27
Abstract: 651,784. Furnaces for supplying hot gases for drying. SIMONSEN, C. U. Aug. 27, 1947, No. 23685. [Class 64(i)] A combustion chamber 10 is formed with a lining of refractory material 12 and a thickened bed 32. The flame from a downwardly inclined burner is directed on to the inclined face of the bed 32 and the gases issue through a port 30, offset upwardly from the axis of the burner, into a conical nozzle 20. The duct 28 is connected to a suction fan so that a flow of cooling air passes between the chamber and a surrounding casing 24 and mixes with the combustion products in the duct and air is drawn into the burner through holes 44. Fuel oil is pre-heated in a coil 48 which may be swung into the duct 28. The cooling air space is provided with a plurality of dampers arranged in two groups for simultaneous operation by hand-wheels.
Patent GB-500808-A (GB)
Title: Improved tackles for sheeting sails
IPC: B63H9/10
Filed: 1937-08-30
Abstract: 500,808. Sails. ANDRESEN, H. Aug. 30, 1937, No. 23707. Convention date, Aug. 28, 1936. [Class 116] The loech of a sail is provided with several sheeting lines 1, 2, 3 at different heights and these are connected to the main sheet by a system of blocks a, b, c. Various systems of blocks so that each line carries different proportions of the total load are described..
Patent GB-732818-A (GB)
Title: Improvements in or relating to the production of oxygen or oxygen-enriched air
Inventor: BINGHAM CHARLES HENRY
IPC: C01B13/02
Filed: 1953-08-27
Abstract: In the production of oxygen or oxygen-enriched air by contacting air under pressure with a solvent such as water which preferentially absorbs the oxygen, nitrogen-enriched air is discharged, then the pressure on the solvent is released to evolve oxygen-enriched air, and <PICT:0732818/III/1> the reduction in temperature during expansion of the oxygen-enriched air and/or the nitrogen-enriched air is used to cool the solvent in order to increase its solvent capacity.  As shown, air enters through valve B and is pumped by compressor E1 via valve F to thermostatically-controlled valve T1 from which part of the air passes directly into the solvent in vessel B1 via valve FAA and the remainder is cooled by flowing through coils FSS, FS to expansion valve FX and cone FC into the solvent. Nitrogen-enriched air together with any excess air escapes at NV1 to thermostatically-controlled valve T2, part passing to expansion engine EE and the remainder through expansion valve NX1 and cone NC1 to waste. The valves are then adjusted and oxygen-enriched air is pumped out at vessel B1 via valve G1, cone AC, and compressor E1 to thermostatically-controlled valve T3, entering the second vessel F1 partly through valve DBB and partly via coils DSS, DS to expansion valve DX and cone DC.  The nitrogen-enriched air is removed in a similar manner to that obtained from vessel B1 and then the valves are again altered and air further enriched in oxygen is pumped out via valve H1 and cone CC for use or storage.  The vessels are maintained at an equal temperature, which may be below atmospheric, by means of liquid circulated through cooling jackets J1 by pump K1. There is only a very small free gas space in vessels B1, F1 and the level of liquid in these vessels is maintained constant by means of heat-insulated closed chambers L1, L2 which are partially filled with liquid.  The vessels B1, F1 may contain bubble-cap plates or agitators.  The various valves are operated by a hydraulically-operated valve controller A1.  In a modification (Fig. 3, not shown), the free gas space at the top of the vessels is eliminated altogether, the nitrogen-enriched and oxygen-enriched air being withdrawn through separate containers arranged at the top of each vessel.  In simplified apparatus (Figs. 2, 4, not shown) (a) a single cooling bath is provided surrounding both vessels and the cones for gas expansion are arranged in the cooling bath; (b) coils FSS, FS, cone FC, valves T1, T2, and the corresponding parts associated with vessel F1, are omitted, all the air and oxygen-enriched air being introduced into the solvent at the bottom of the vessels. Suitable solvents apart from water are paraffin, white spirit, and iso-propyl alcohol.  Before treatment the air may be freed from dust, carbon dioxide, and moisture.  The power derived from expansion engines EE may be used for example to drive the compressor E1.
Patent GB-938477-A (GB)
Title: Improvements in or relating to magnetic core memory circuits
IPC: G11C11/06
Filed: 1960-07-07
Abstract: 938,477. Circuits employing bi-stable magnetic elements. ATVIDABERGS INDUSTRIER A.B. July 7, 1960 [July 10, 1959], No. 23794/60. Class 40 (9). A magnetic core memory circuit, Fig. 1, includes a plurality of magnetic cores arranged in sets (cores C11, C12, C1n comprise one set, cores C21, C22, C2n comprise a second set and cores Cn1, Cn2 and Cnn comprise a third set) and each set has a drive winding X1, X2 or X3 connected in series with a normally non-conductive selecting transistor switch Tx1, Tx2 or Txn to constitute a drive path. The drive paths at their one ends are connected together to one pole of a first drive transistor switch Txs and at their other ends are connected together and to one pole of a second drive transistor switch Txr. The drive transistor switches Txs and Txr are normally conductive and have their other poles connected together. An address register ASx is connected to the base electrodes of the selecting transistor switches Tx1, Tx2, Txn and is capable of rendering any of such switches conductive, as desired. A reading pulse genertor LPG and a writing pulse generator SPG are connected to the base electrodes of switches Txr and Txs respectively. The circuit operates on the coincidence principle and further drive paths are provided each consisting of a transistor switch Ty1, Ty2 or Tyn in series with a winding Y1, Y2 or Yn. The further drive paths are connected to drive transistor switches Tyr and Tys and to address register ASy, which operate in a similar manner to switches Txr, Txs and register ASx. Operation.-If core C21 is selected, address registers ASx, ASy render transistors Tx2, Ty1 conductive for a period of time t2 to t7, Fig. 2. At time t3, Fig. 4, a reading pulse from generator LPG is applied to transistor switches Txr, Tyr to block such switches. Current flows from earth, through transistor Txs winding X2 transistor Tx2 and resistor R to a negative source - E2. Current simultaneously flows from earth, through transistor Tys, winding Y1, transistor Ty1 and resistor R to negative source - E2. The sum Ir, Fig. 3, of the ampere-turns at core C21 due to the two currents provides a reading pulse sufficient to reverse the polarity of core C21 and also to induce a voltage pulse in a read-out winding (not shown). After passage of the reading pulse a writing pulse is generated during time t5 to t6 by the application of a pulse from generator SPG to the bases of transistor switches Txs, Tys. The writing pulse resets the core. Surge protection for the transistors is provided by diodes D connected to a source - E1 the voltage of which is higher than the highest possible voltage which may be induced in the windings. Spurious outputs due to capacitive coupling between the read-out winding and unselected windings are prevented by the earth connection over transistors Txs, Tys.