baber/WOPTO huggingface dataset:
Patent GB-330743-A (GB)
Title: Wire baking pans
IPC: A21B3/15
Filed: 1929-05-23
Abstract: 330,743. Nilles Stamping Co., (Assignees of Baumann, W. D.). March 9, 1929, [Convention date]. Baking and like tins of pans.-The baking surface of a baking pan or tray consists of wire mesh suitably supported, exposed from edge to edge, guard means projecting laterally beyond the edges of the baking surface being provided to protect it from damage. Fig. 3 shows one form of construction in which the mesh surface A is bent over the edge of the upper flange B<2> of a channelled frame or edging, the lower flange B' of which projects outwardly to form a protecting means for the mesh. The flanges may be pressed together to lock the mesh in position. Fig. 5 shows a form in which the mesh is held in place by indentations C<2> punched in the lower flange of the frame. Fig. 7 shows a form in which the frame is composed of upper and lower members D', D, which are connected together by rivets D<2> serving also to hold the mesh surface in position.
Patent GB-739556-A (GB)
Title: Process for purifying glass
IPC: C03B5/225
Filed: 1954-05-31
Abstract: 739,556. Purifying glass. ZEISS-STIFTUNG, C., [trading as JANAER GLASWERK SCHOTT & GEN.]. May 31, 1954 [June 10, 1953], No. 15998/54. Class 56. In the purification of molten glass a vacuum is created above the melt and at the same time an electric current is passed through the melt by means of electrodes. The purification may take place in an electrically conductive crucible, e.g. of platinum, which serves as an electrode, and the melt may be additionally heated from the outside.
Patent GB-547627-A (GB)
Title: Improvements in or relating to vehicle bodies
IPC: B62D31/02
Filed: 1940-11-01
Abstract: 547,627. Vehicle bodies. BUDD MANUFACTURING CO., E. G. Nov. 1, 1940, 60.16005. Convention date, Dec. 1. 1939. [Class 108 (i)] A vehicle body comprises main longitudinal load-carrying members, including, as shown in Fig. 6 (which is a transverse vertical section of a vehicle of the 'bus type extending beyond its centre line) side walls, which may consist of corrugated sheeting carried on posts 40, extending below the body flooring, inwardly disposed spaced vertically deep beams 10, all these longitudinal members extending between and beyond the front and rear wheels, floor sheeting 22 connecting the walls to the beams 10, and spaced transverse bulkheads below the flooring connecting the flooring, side walls and beams 10; an additional longitudinal structure consists of a wide and deep channel 13 providing a central depressed aisle section of the flooring.
Patent GB-1083247-A (GB)
Title: Transmission belt and method of manufacture
IPC: B29D29/08
Filed: 1966-04-12
Abstract: 1,083,247. Laminating; moulding belts. DAYCO CORPORATION. April 12, 1966 [June 29, 1965], No. 16005/66. Headings B5A and B5N. [Also in Division F2] A toothed V-belt of natural or synthetic rubber having longitudinal reinforcing cords 22 comprises a longitudinally undulating layer 16 of soft rubber between layers of a harder rubber. The inner and outer surfaces of the belt have rubber impregnated fabric facings 14, 27. In manufacture, rectangular section strips (15) of hard rubber are laid along parallel grooves formed by a sheet of fabric (14) closely laid over the surface of a grooved steel plate (11) (Fig. 1, not shown) and soft and hard rubber layers (16, 17) laid across the strips. The assembly is wrapped round a mandrel (18) having a longitudinally grooved cured rubber matrix (19) therearound (Figs. 2-5, not shown), reinforcing cord (22) is wound on to the layer (17), and a hard rubber outer layer (23) and the outer fabric (27) are added. The assembly is cured under pressure, the layers deforming so that the layer (16) becomes undulated. The cured sleeve is stripped from the mandrel and cut into individual belts.
Patent GB-583036-A (GB)
Title: Improvements in and relating to detecting and range finding systems employing radio pulses
IPC: H03G5/26
Filed: 1943-09-30
Abstract: 583,036. Radiolocation. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Sept. 30, 1943, No. 16086. [Class 40 (v)] In a radiolocation system employing radio pulses projected to and reflected from distant objects, the gain of the receiver increases progressively with time, so that the weaker pulses reflected from more distant objects receive greater amplification, and at the same time, the band width decreases progressively. In the system shown, the valves of the I.F. amplifier include bias input. or discharge circuits comprising condensers 35 and resistances 36. A part of each pulse radiated by the transmitting aerial 11 is picked up directly by the receiving aerial 13 and this overloads each stage of the amplifier producing a high negative bias on the control grids. At the end of the transmitted pulse, the bias circuits begin to discharge and the receiver begins to recover sensitivity, the time constant of the circuits being chosen so that maximum sensitivity is regained towards the end of the reflection period. Decrease in the band width during the reflection period is effected by the use of unbyepassed cathode resistances 25 of different values producing symmetrical detuning of the amplifier, the valves being of the high-mutual-conductance type in which the input capacity varies with grid bias. Where the receiver is rendered inoperative during the transmitting period, the biassing potential may be obtained from another part of the circuit.
Patent GB-1346742-A (GB)
Title: Flame detectors
IPC: G08B17/12
Filed: 1972-04-07
Abstract: 1346742 Fire alarms CERBERUS AG 7 April 1972 [8 April 1971] 16169/72 Heading G4N [Also in Division G1] In a flame detector including a photo-cell arrangement 1, 2 producing an output in response to flame radiation, circuitry is provided to select two distinct frequency ranges of the photo-cell output and provide corresponding processed signals to a threshold arrangement which produces an alarm signal only if each processed signal exceeds a pre-set level. Photoresistors, photodiodes or phototransistors 1, 2 may have red and blue filters 3, 4 respectively. Amplifiers 5, 6 are tuned to the respective frequency ranges required. After a delay, an audible or visible alarm, e.g. an indicator lamp is actuated if both thresholds at 9, 10 are exceeded. The delay ensures that transient conditions do not produce an alarm. The photo-cells 1, 2 may be replaced by a single photo-cell. A plurality of flame detectors (D) may be connected to a signal centre (S) which indicates which of the detectors has sounded the alarm, Fig. 4 (not shown). Alternatively a plurality of photo-cell arrangements may be connected to a signal centre which also includes circuitry for the photo-cells, Fig. 5 (not shown).
Patent GB-791615-A (GB)
Title: Improvements in or relating to deep sea trawling with the aid of electronic echo-sounding equipment
IPC: G01S1/72
Filed: 1955-06-06
Abstract: 791,615. Echo-sounding. BURNEY, Sir C. D. Jan. 31, 1956 [June 6, 1955; June 11, 1955], Nos. 16191/55 and 16860/55. Class 118(2). A device for carrying underwater electronic apparatus for detecting fish shoals or plankton comprises a casing containing the electronic apparatus which is towed astern of the ship, or is towed by a trawler in the vicinity of a trawl net in advance of the net mouth, combined with means for controlling the depth at which the casing travels below water when it is towed at a given speed. The device may be in the form of a "porpoise" P which is towed on its own or in conjunction with a trawl net, or in the form of an "otter" 0 serving to hold the mouth of the trawl net open. In the case of the "porpoise" (Fig. 1) the electronic apparatus 3 is carried in a compartment 1 having an aperture 2 to permit free entry of water into the casing 1. A conical weight 5 forms the nose of the device and stabilizing vanes 8 and 9 are provided at the tail. Wings or vanes 11 are set at a suitable angle to cause the porpoise to run at the required level. Flexible conductors 16 for the electronic apparatus are embodied as a core in cable 14 which, when the porpoise is used in conjunction with a trawl net, is passed through a shackle S travelling on the net towing cable W, down which the porpoise is lowered to the positions indicated in Fig. 7. In the case of the "otter" (Fig. 4) a hollow cylindrical boom 19 and a bottom stay-bar 28 space two curved deflector boards 17 and 18 which provide lateral force on the otter, and a watertight chamber 21 forming the rear of the boom 19 produces a measure of buoyancy which with a curved reinforcing weight bar 27 causes the otter to travel at the required depth. Electronic apparatus 25 is carried in a compartment 20 of the boom 19. The core of towing cable 24 consists of electrical conductors which leave the cable in the form of a flexible connection to the electronic apparatus 25.
Patent GB-660940-A (GB)
Title: Method of copolymerising vinylidene chloride and vinyl chloride
IPC: C08F214/08
Filed: 1949-06-17
Abstract: Interpolymers are prepared by interpolymerizing 50 to 90 per cent vinylidene chloride and 50 to 10 per cent vinyl chloride at a constant temperature at which the system has a substantial vapour pressure, in aqueous suspension, with agitation, bleeding monomer vapour rich in vinyl chloride from the system during the polymerization reaction just sufficiently to prevent the pressure therein from exceeding a value corresponding to that of the selected mixture of monomers at the said constant temperature, until the internal pressure in the system spontaneously decreases and thereafter recovering the resultant interpolymer.  Benzoyl peroxide is a specified catalyst.  Specifications 467,084 and 532,697 are referred to.
Patent GB-476641-A (GB)
Title: Improvements in or relating to lids or closures for boxes, cartons and like containers of cardboard or other material
IPC: B65D43/02
Filed: 1936-06-10
Abstract: 476,641. Lids for cartons. HOSKING, H. G. W., and SPICER, J. L. June 10, 1936, No. 16259. [Class 125 (iii)] A push-on lid for a carton &c. comprises a cap-like member c having an inwardly extending flange e, and a ring of cardboard f over which a transparency is stretched so that the contents of the carton may be viewed therethrough. The downwardly extending flange is knarled or milled. The transparency may be secured by adhesive. The part c may be of synthetic resin or metal. A bayonet-joint connection may be employed with the cap.
Patent GB-452335-A (GB)
Title: Manufacture of alkylated phenols
IPC: C07C37/14
Filed: 1935-06-05
Abstract: Phenols are alkylated by reacting them with a tertiary olefine in the presence of a trace of an acid or an anhydride or halide thereof, or of a salt thereof with a weak base, or iodine. Suitable phenols include phenol, cresols, naphthols, resorcinol, pyrocatechol, guaiacol, hydroquinone, nitrophenols, chlororesorcinol, chlorphenols, phenylphenols, benzylphenols and tertiary amylphenol.  Suitable olefines include di- and tri-iso-butylene, tri- and tetramethyl-ethylene, methyl- and dimethylcyclohexene, pinene, and mixture obtained from cracked petroleum fractions.  Suitable catalysts include sulphuric acid, iodine, alkyl sulphuric acids, sulphonic acids obtained by the sulphonation of benzene, toluene, phenol, cresols, naphthols, salts of weak bases such as urea or aniline with sulphuric acid or sulphonic acids, phosphoric acid, phosphorus pentoxide, phosphorus trichloride, thionyl chloride, sulphur trioxide, easily hydrolyzed metal salts such as zinc and aluminium chloride, hydrobromic acid, hydrochloric acid and addition products of olefine and hydrohalic acids.  The products may be used as germicides, bactericides, in the manufacture of oil-soluble phenol-aldehyde resins and, in the form of their sulphonic acid salts, as detergents.  Halogenated derivatives of the alkyl phenols are valuable germicides and disinfectants and the higher alkylated phenols such as amyl, octyl, decyl, and dodecyl phenols yield valuable wetting agents when monosulphonated and neutralized to form sodium or other metal salts.  In examples: (1) phenol is treated with di-iso-butylene in the presence of sulphuric acid or iodine to yield o- or p-isobutylphenol or tertiary butylphenol; (2) phenol is treated with methylcyclohexene in the presence of sulphuric acid to yield o- and p-(methylcyclohexyl)-phenol; (3) phenol or p-tertiary amylphenol is treated with trimethylethylene in the presence of sulphuric acid to obtain amylphenol and di-amylphenol; (5) phenol is treated with di- or tri-iso-butylene or tetramethylethylene in the presence of hydrochloric acid, hydrobromic acid, zinc chloride or aluminium chloride; (7) resorcinol, in solution in ethyl ether and iso-propyl ether is treated with di-iso-butylene in the presence of a reaction product of di-iso-butylene and hydrogen chloride. Specification 409,111 is referred to.
Patent GB-690436-A (GB)
Title: Improvements relating to magnetic amplifiers and to automatic voltage regulating arrangements employing such amplifiers
IPC: H03F9/02
Filed: 1950-06-30
Abstract: 690,436. Automatic voltage control systems. SIEMENS BROS. & CO., Ltd., and DOUBLE, H. S. June 29, 1951 [June 30, 1950], No. 16431/50. Class 38 (iv). [Also in Group XXXIX] In a rectifying system in which automatic regulation of the D.C. load voltage is effected by saturable reactors in the A.C. circuit, the control current of the reactors is derived from two magnetic amplifiers connected in cascade, each amplifier being arranged to give an increased D.C. output in response to a decrease in its D.C. input or an increase in the A.C. energizing voltage. The D.C. input to the first amplifying stage is obtained from a bridge circuit which gives an increased output as the D.C. load voltage falls, while the two amplifying stages are selected such that their combined characteristics cause the change in the control current of the reactors for a given change in the A.C. supply voltage to have a greater degree of variation when the A.C. voltage is at A low limit than when it is at an upper limit. As shown, the rectifying system comprises a threephase star-delta transformer TR and a full-wave dry rectifier MR, the load windings I of saturable reactors CHA, CHB and CHC being connected between the transformer primary windings and the star point. The D.C. load voltage is obtained between terminals TL after smoothing by chokes CHS, CHSS and condenser Q. The saturable reactors are controlled by cumulatively acting D.C. current and voltage windings II, III and opposed bias windings IV. Variation of the D.C. load voltage is detected over terminals BB by a bridge circuit VSN comprising barretters or other non-linear resistors BRX, BRY and fixed and adjustable resistors YXA, YYA and YXB, YXB respectively, the output of the bridge being applied to the control windings V of a magnetic amplifier comprising reactors CHK, CHL and constituting the first amplifying stage. This amplifier has A.C. windings VI and a D.C. current feed-back winding VII which is energized over a full wave rectifier ARB and acts in opposition to the control winding. The amplifier is energized from the A.C. supply over a transformer TRB and its output is applied over a potentiometer PR to the control winding of a similar amplifier CHE, CHF which constitutes the final amplifying stage and supplies the voltage windings III of reactors CHA, CHB, CHC. In operation, a fall in the D.C. load voltage causes a rise in the output of the bridge VSN and consequently a fall in the output of the first amplifying stage and a rise in the final stage output. The ampere-turns of the voltage windings of the reactors are thus increased and effect an increase in the D.C. load voltage. If the A.C. supply voltage rises, the cumulative effects of the two amplifiers cause a reduction in the voltage winding current of the saturable reactors with a consequent rise in the impedance of the load windings and stabilization of the D.C. load voltage.
Patent GB-272966-A (GB)
IPC: D21D1/02
Filed: 1927-06-21
Abstract: 272,966. Wolff & Sohne Ges., P. J., and Mallickh, H. June 21, 1926, [Convention date]. Pulping - engines. - To make possible the use of a grinding cylinder having a width greater than its diameter and to overcome the difficulty caused by the greater difference between the outside and inside travel of the stream of pulp and its consequent unequal pulping, the tail-race c is made two - thirds of the width of the grinding cylinder as shown and the hood is constructed as at f to direct the remaining one-third of the stream over the top of the cylinder and discharge it into the main stream at the head race end, which is widened for that purpose. A guide plate g pivoted at h and yieldingly held to the cylinder by springs m prevents the formation of eddies in the hood.
Patent GB-961857-A (GB)
Title: Pn-type junction semiconductor devices and method of making them
IPC: H01L21/316
Filed: 1961-05-05
Abstract: 961,857. Semi-conductor devices. HEWLETT-PACKARD CO. May 5, 1961 [May 9, 1960], No. 16479/61. Drawings to Specification. Heading H1K. A PN junction is produced in an impuritydoped semi-conductor body having two planeparallel surfaces by depositing upon one such surface donor atoms and upon the other such surface acceptor atoms and diffusing the atoms into the body so that they meet in a plane substantially parallel to the said surfaces. This produces steep impurity concentration gradients between the PN junction so formed and the said surfaces. Preferably the thickness of the body between the said surfaces is less than 3 mils, e.g. about 2 mils. In an example, a wafer cut from very pure P-type monocrystalline Si is surface ground to a thickness of approximately 0.004 inch, washed, and polished, after which donor atoms, e.g. P atoms, are deposited on the surfaces of the wafer from a compound such as PO 5  in an inert atmosphere at 1080‹ C. The wafer is then etched in HF acid, rinsed, dried, and plated with Ni. The P atoms are diffused into the wafer from both surfaces to a depth of about 0.00088 inch in an oxidizing atmosphere at 1300‹ C. for about 1 hour. The wafer is then lapped to remove the diffused zone from one side and to reduce the wafer thickness to about 0.0015 inch. After further cleaning &c. acceptor atoms, e.g. B atoms, derived from a compound such as BCl 3 , are deposited upon the lapped surface, and upon the unlapped surface which is, however, protected against B diffusion by an oxide film. The P and B atoms are then diffused into the wafer for about 1 hour at 1270‹ C. so that they meet in a plane substantially parallel to the wafer surfaces. Alternatively, acceptor and donor atoms may be deposited on opposite surfaces of the wafer and diffused into the wafer simultaneously. The wafer may be divided into a plurality of bodies, each of which is provided with an electrode on each surface to form a diode. Other impurities mentioned are As, Sb; Al, In.
Patent GB-642251-A (GB)
Title: Improved thread-furnishing mechanism for winding and other textile machines
IPC: B65H67/02
Filed: 1947-06-23
Abstract: 642,251. Thread-furnishing mechanism for winding &c. machines. MASCHINENFABRIK SCHWEITER AKT.-GES. June 23, 1947, No. 16510. Convention date, June 29, 1946. [Class 120(ii)] In a thread-furnishing mechanism for winding &c. machines of the kind comprising a turntable adapted to carry several spare spools, the turntable having a thread guide through which the threads are drawn and clamped, and in which a feeler contacting the supply spool is provided for controlling the stoppage of the winding apparatus, the rotation of the turntable and the knotting together of the ends of thread, as the supply spool nears exhaustion, thread ends 34 (see Fig. 11) from the reserve supply spools 32 are each led through a slot 33 in the plate 30 of the rotary creel and clamped beneath a spring 36. The thread 98 from the spool 65 being unwound is led through its slot 33, over guides 99, 90, Fig. 11, and through the traverse guide 84 to the winding-on package 83 rotated by a drum 82. When only a small quantity of thread remains on the package 65, the feeler 59 effects contact between elements to energize two electromagnets. One electromagnet, 64, moves a locking lever 89 to allow the driving control lever 85 to move under the influence of a spring 86 to disconnect the drive to the drum 82 so to bring it to rest. The other electromagnet moves an arm to rotate, partly, a shaft 14 to remove a locking pawl to allow a driving pawl to move under spring pressure to connect a constantly driven pulley 9 with a control shaft 2. The rotation of this shaft, through a cam drum 3, swings a lever 18 to rotate the plate 29 through an angle to bring the next spool 32 into supply position and by moving the feeler 59 de-energize the two electromagnets. The thread 102 from the exhausting spool is retained, during this motion by a catch hook 40, and the thread 103 of the fresh spool 32 is brought into position for knotting thereto. A cam disc 4 on the shaft 2 swings an arm 44 to bring the knotter 45 into position to catch the threads 102, 103, the knotter being operated, to effect tying and to sever the end portions, by the cam drum 3. A cam disc 5, also on the shaft 2, now moves the lever 71 which, through a link 74, moves the starting lever 85 and resets the catch 89 to allow winding to continue. After one revolution, the driving pawl of the control shaft 2 contacts the locking pawl on the shaft 14 to bring the shaft 2 to rest. Upon failure of thread, the guide 90 falls to effect release of the lever 85 to stop winding. In a modification, instead of the feeler 59 operating through electromagnets, it is fitted to operate through mechanical linkages.
Patent GB-586573-A (GB)
Title: Improvements in or relating to internal combustion turbine plant
IPC: F04D27/02
Filed: 1943-10-11
Abstract: 586,573. Air compressors. SMITH. D. M., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Oct. 11, 1943, No. 16656. [Class 110 (i)] Air which is blown off from an axial-flow compressor, to avoid stalling at low speeds, is discharged through convergent-divergent nozzles whereby the fraction of the total air which is blown off decreases rapidly with increase in the pressure ratio of the compressor. Two nozzles 1a, 2a, discharging from spaced points in a compressor may be arranged in series, as shown in Fig. 3. In this arrangement, discharge from the lower pressure point ceases when the pressure ratio rises sufficiently. In Fig. 4, the nozzle 1b is situated axially and air vented out of the compressor at 7 passes through a bladed rotor 8 on its way to the nozzle. Air from the nozzle, as well as from the rotor 8, may be used for cooling purposes. Specification 586,565 is referred to.
Patent GB-142355-A (GB)
Title: Improvements in or relating to the shells of bottom brackets for the frames of cycles, motor cycles and the like
IPC: B62K19/00
Filed: 1919-07-04
Abstract: 142,355. Micklewright, B. July 4, 1919. No Parent granted (Sealing fee not paid). Crank - axle brackets for cycles, motor-cycles, &c. are made from two or more distanced and co-axially arranged pieces of steel tube, both or all of the tubular pieces being perforated at right-angles to their axis for the reception of the end of each frame tube to be connected to the bracket. For maintaining the tubes in distanced relationship, internally screw-threaded end-pieces may be employed, or the ends of the outer tube may be closed in upon the inner tube, or, as shown in Fig. 7, when three tubes Q, S, T are used, the ends of the innermost tube may be opened out, and those of the outer tube closed in, to engage with the middle tube, the joints V, W being welded.