baber/WOPTO huggingface dataset:
Patent GB-1360621-A (GB)
Title: Control apparatus for and method of controlling electron beam welding  machines
IPC: H01J37/304
Filed: 1971-06-19
Abstract: 1360621 Automatic control of electron beam welding ROLLS ROYCE (1971) Ltd 19 June 1971 28880/71 Heading G3R [Also in Divisions B3 and H1] In butt welding of varying thickness workpieces 20 by electron beam, wherein the workpieces are mounted in a vacuum chamber 19 and moved, during welding, in a direction 30 past a fixed gun 10, a beam sensitive, electrically conducting plate 24, mounted beneath the workpieces, generates a signal which is dependent on the strength of the beam emerging from the workpieces and is fed back to the gun to vary gun beam intensity in accordance with workpiece thickness so as to produce a constant width and full depth weld. The plate 24 is connected, via an amplifier 28, to a mark space pulse generator 16 having at its output a gallium arsenide light source which, through a fibre optical light pipe 14, actuates a gun-  connected light-operated switch 12 rapidly OFF and ON. The heat at the joint is thereby varied by variation of the OFF/ON ratio at the switch 12, the ON beam intensity being constant. The generator 16 and switch 12 are described in Specification 1331113. In operation, initially the beam intensity is set low for alignment and is thereafter increased to commence welding, the workpiece then being set in motion. On passing through the workpieces the beam strikes the plate to start the OFF/ON intensity control via the generator 16.
Patent GB-1500169-A (GB)
Title: Wireless paging system
IPC: H04W84/02
Filed: 1975-07-09
Abstract: 1500169 Paging systems HASLER AG 9 July 1975 [11 July 1974] 28980/75 Heading G4H A paging system comprises a transmitter Fig. 1, and a plurality of receivers, Fig. 2, which can be called individually, the transmitter comprising a carrier frequency generator 1, for, e.g. 30-60 kHz, including means for frequency or phase modulation by a call signal generator 8, a call signal being composed of code words each containing the same number of signal elements, and capable of calling at least one receiver, and each receiver including a demodulator 26, a call signal detector, and an audio frequency signal generator 34 connected to an acoustic generator 36 and activated by the call signal detector, the transmitter and each receiver including a frequency divider 6, 30 respectively for the carrier frequency to provide timing signals. In an embodiment the transmitter further comprises an induction loop 5, and a key sender 9 for setting up the call signal, and the receiver comprises a phaselocked loop demodulator 26 feeding a decoder 33. A call signal commences with a 10 bit synchronization signal (13), Fig. 3 (not shown) and is followed by a 2-bit message (14) and then by the call address (15) consisting of five 4-bit words selected from the following five code words: A=0011, B=0110, C=1100, D=1001, E = 0101. The word E in an address stands for any of the other words A-D, so that group calls may be produced, the address EEEEE calling all receivers. The address is followed by a parity word (16). The phase-locked loop demodulator 26 provides as inputs to the decoder 33 the carrier frequency on 27, the data on 28 and a control signal on 29. The decoder 33 comprises a signal element counter (mod 4) (51), Fig. 4 (not shown), which generates (on 52) a code word timing signal, and controls a code matrix (56) which is set to the call signal assigned to the receiver. The code word timing signal feeds a code word counter (mod 8) (53) having outputs to seven AND gates (570-576) also connected to receive the call address from the code matrix (56) and an output from a parity checking circuit (43). A comparator circuit (54) delivers a first reset signal to a first flipflop (65) in the case of non-conformity between an element of the received address and the assigned address. The comparator includes means for comparing each received code word with the word E, and for non-conformity delivering a second reset signal to a second flipflop (66), both reset signals being delivered to an AND gate (67) the output of which resets the signal element counter (51), the code word counter (53) and also the carrier frequency divider 30. In the absence of either reset signal a further output of the code word counter (7, 41) activates audio generator 34. A message circuit (45) converts the message bits (14) into control signals which may operate a switch 38. The carrier frequency dividers 6, 30 may typically produce a timing pulse frequency of about 100 Hz, fluctuations due to frequency modulation of the carrier being the same for both transmitter and receiver.
Patent GB-298897-A (GB)
IPC: H01H51/04
Filed: 1928-10-09
Abstract: 298,897. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.). Oct. 15, 1927, [Convention date]. Thermostats.-The heat-sensitive member of a thermal switch is embedded in a mass m which when cold or of normal room temperature is solid, but when heated is yielding, that is to say, soft or liquid. A suitable substance is a mixture of bitumen and mineral oils. The Figure shows a bimetallic coil b the outer end of which is connected to the vessel g and the inner end of which is connected to an axle a carrying a contact arm k. Current flowing through the coil b heats it and the mass m, which when sufficiently soft allows the coil to turn the axle a and bring the arm k into engagement with a stationary contact.
Patent GB-342287-A (GB)
Title: Improvements in hydraulic change-speed gears
IPC: F16H39/42
Filed: 1929-09-25
Abstract: 342,287. Hydraulic transmission of power. WAAP, F., 18, Eisenstuckstrasse, Dresden, Germany. Sept. 25, 1929, No. 29058. [Class 69 (ii).] In hydraulic change-speed gears of the kind in which the vaned driving member causes a valve-regulated flow through surrounding passages, the passages are provided with baffles and with vaned members, the latter serving to separate pressure and suction chambers. The form shown in Fig. 1 has controlling valves 1, baffles 22, vaned members 23, 24, and fixed abutments 16. In a modification, pivoted abutments 34, Fig. 2, are adapted to mesh with teeth 11 on the valves 1, so that they may be swung into the position shown in Fig. 4 when no drive is required ; further, the shafts of the members 23, 24 carry in another chamber other vaned members 47, 49 forming a pump, the pressure and suction chambers of which are connected by channels 51, 50 with the pressure and suction chambers of the gear. The valves I are adjusted from an axially slidable member, and the gear may be driven from a motor shaft through mechanical reversing gearing.
Patent GB-533349-A (GB)
Title: Improvements in and relating to station selector switches for radio
IPC: H03J5/32
Filed: 1939-10-31
Abstract: 533,349. Keyboard switches. UNITED-CARR FASTENER CORPORATION. Oct. 31, 1939, No. 29074. Convention date, Oct. 31, 1938. [Class 38 (v)] In a station selector for radio receivers, the stations are selected by depression of pivoted levers which are actuated after the manner of piano or typewriter keys; each lever is latched in its depressed position and actuation of one lever releases a previously actuated lever. Each lever 11 is pivoted on a reduced portion of a bar 6 extending between end plates 2 and has a " finger " portion 28 extending through a slot in a plate 1. It is biased by a spring 32. The plate 11 carries an insulating portion 30 with contacts 15 adapted to engage fixed contacts 14 and is latched in the actuated position by a latch bar 39 engaging a shoulder 40. The bar 39 extends past all the levers and actuation of any lever will cause the release of a previously-actuated lever.
Patent GB-843782-A (GB)
Title: Electrostatic precipitators
IPC: B03C3/40
Filed: 1956-09-24
Abstract: 843,782. Electrostatic precipitation. LUEDER, H. Sept. 24, 1956 [Oct. 20, 1955], No. 29075/56. Class 39(1). An electrostatic precipitator comprises a pressure vessel 2 to which gas to be cleaned is supplied through the pipe 4 at a pressure above atmospheric and in which the separator electrodes 6 and 8 are accomodated, an insulated low voltage supply line 21 for the voltage step-up transformer 18, and a pressure-sensitive switch 20 arranged to switch off the current when the gas pressure falls below the operating pressure, e.g. by 10% the separator electrodes 6 and 8 are of conical form and are bent over near their edges so that each edge lies at a greater minimum distance from the neighbouring electrode or electrodes than does the major part of the remainder of the electrode. The edges of the electrodes can be curled over through at least 180 degrees. The edges of the electrodes can be enclosed by puncture-proof insulating layers. The electrodes 6 have earth potential and are supported only at their outer edges where they are spaced by distance pieces 7. The electrodes 8 are at high voltage and are supported only at their inner edges each of which is clamped between two plane annular discs 9 separated from the neighbouring annular discs by rings 11 provided with apertures 10. Detachable pins 12 are provided for locating the electrodes in the radial direction. Two insulating rings 13 and 14 support the two electrode groups 6 and 8. The lowest electrode 6 together with a cover dome 15 which is pressed against this electrode by an abutment 16 when the cap 1 is screwed up forming a cavity 17 containing the transformer 18, a rectifier tube 19 and the pressuresensitive switch 20. The electrode group 6 is connected via earth to the secondary winding of the transformer 18 and the electrode group 8 is connected to the secondary winding of the transformer through the rectifier tube 19. A glow lamp 22 connected through a high resistance 23 to the high voltage electrode group 8 indicates when the field between the electrodes is operating. A wire ring 24 carrying a radioactive preparation serves as an ioniser and is connected through supporting wires to one of the electrodes 8. The gas inlet pipe 4 has an outlet into the vessel 2 which deflects the gas flow into a tangential direction and the gas passes through apertures 26 in the electrodes 6 and then in a cleaned state through the apertures 10 to leave through the pipe 5. The part of the gas that flows between the two lowest electrodes is conducted through apertures 27 in the lower of the two electrodes into the cavity 17 to ventilate it before joining the main gas stream. Any liquid separated from the gas runs down the electrodes and collects in the cap 1 whence it can be discharged through a fitting 29. The distance between the electrodes can be greater than 1 m.m. Packings 30 ensure that the vessel 2 is pressure-tight and packings 31 prevent uncleaned gas mixing with cleaned gas.
Patent GB-627715-A (GB)
Title: Improvements in or relating to variable inductance devices
IPC: H01P7/00
Filed: 1946-09-30
Abstract: 627,715. Impedance networks. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and COOPER, V. J. Sept. 30, 1946, No. 29160. [Class 40 (viii)] A variable inductance primarily for work at very high frequencies includes at least two substantially parallel conductors and means for varying their spacing. In the construction shown four metal tubes 1 are eccentrically mounted on rotating discs 2 geared together by wheels 3. At one end all the conductors are coupled by a plate 4 and at the other end they are connected in pairs to plates 9 and 10 forming the terminals of the apparatus. A fixed coupling loop 11 may also be provided. In a modification, the tubes 1 are cranked at their ends to avoid the use of supporting discs. Specification 599,021 is referred to.
Patent GB-822781-A (GB)
Title: Improvements in supports for the walls and roofs of mine workings
IPC: E21D11/15
Filed: 1957-09-17
Abstract: 822,781. Linings for mine workings. LOBBERT & CO. G.m.b.H. Sept. 17, 1957 [Jan. 26, 1957], No. 29178/57. Class 20(2) A frame for lining walls and roofs of mine workings comprises two parallel wire sides 1 connected by strutting 4 hooks 3 formed at one end being in the plane of the frame and hooks 2 at the other end being of right angles to the plane of the frame so that adjacent frames can be hooked together. Thehooks 3 may be turned towards or away from one another. Specification 800,658 is referred to.
Patent GB-773049-A (GB)
Title: Knitting wool winder
IPC: B65H49/30
Filed: 1955-10-14
Abstract: 773,049. Skein supporting means. BARRACLOUGH, A. C. Oct. 14, 1955, No. 29258/55. Class 120 (2). In an apparatus for holding skeins of knitting wool to facilitate unwinding, the skein is carried between two rotatable concave rollers, each roller being carried by an oblong base, the underneath part of which is fitted with suction pads, by means of which the base can be attached to any hard smooth surface, the base also carrying two supporting members through the tops of which runs a metal rod, upon which the concave roller is supported, the metal rod being threaded at each end to take correspondingly threaded screw caps to maintain the roller in position upon the rod.
Patent GB-854966-A (GB)
Title: Improvements in or relating to endless belt conveyors
IPC: B65G39/10
Filed: 1955-10-14
Abstract: 854,966. Troughing rollers for belt conveyers. SPENCE, F. W. Jan. 14, 1957 [Oct. 14, 1955], No. 29268/55. Class 78 (1). A troughing roller assembly for belt conveyers consists of a trough-shaped cradle 1, preferably of tubular metal construction, carrying arms 2, 7 between which inclined rollers 4 and a central roller 6 respectively are mounted, the cradle having brackets 8 welded to its underside by which it is secured to the stringers 9 of the conveyer frame. The arms 2 mounting the inclined rollers are offset to one side of the vertical plane in which the cradle lies, and the arms 7 are offset to the other side of this plane, so that the rollers 4, 6 may overlap as shown. The ends of each pair of arms 2, 7 are forked to take a spindle 3 which is secured by nuts 5. Each roller comprises a cylindrical body with rebated ends into which are fitted housings 13a for the outer races 14a of ball-bearings, the inner races 14b of which are disposed on the spindle 3. Each bearing is sealed by a seal 15 and held in position by a spacer 16 and end-plate 17. A roller 10 for the lower run may be mounted on the conveyer frame by separate brackets 11 as shown, or be suspended by brackets from the cradle 1.
Patent GB-1337485-A (GB)
Title: Electrophotographic liquid developing apparatus
IPC: G03G15/10
Filed: 1971-06-22
Abstract: 1337485 Liquid developing apparatus FUJI PHOTO FILM CO Ltd 22 June 1971 [22 June 1970] 29279/71 Heading G2H An electrostatic latent image bearing sheet 100 is fed past developing liquid nozzles 9 by rollers 1 to 6, endless bands 11 passing around the rollers on at least one side of the sheet path to keep adjustably mounted electrode rollers 7, 8 spaced from the image bearing surface. As shown, the bands pass around the lower rollers 1, 2, 3 and are thicker than sheet 100 in order to hold rollers 7, 8 away from the image. Rollers 7, 8 may be gravity or spring-pressed against bands 11. In Fig.6 (not shown) the bands 11 pass around the upper rollers 4, 5, 6; the electrode rollers 7, 8 engaging the inner surfaces of the bands. Preferred materials are named for the various rollers.
Patent GB-390089-A (GB)
Title: A process for the preparation of calcined tri-alkali phosphates
IPC: C01B25/30
Filed: 1932-10-19
Abstract: Calcined trialkali phosphates, particularly trisodium phosphate, containing 5 per cent or less of water are obtained by causing the aqueous solutions to flow in thin layers on to the surface of heated rotating drums from which the dry products are scraped off.  The temperature of the drums should be above 100 DEG  C., preferably at about 140 DEG  C.  A temperature lower than 140 DEG  C., for instance, 120 DEG  C., may be used however.  When the solutions contain colouring constituents, particularly those of an organic nature, they may be treated prior to evaporation with bleaching agents such as chlorine.  A statement of the prior art refers to solidifying a melt of trialkali phosphate in its water of crystallization on drums from which the product containing water of crystallization is scraped off; to calcination of the hydrated phosphates on the surface only by treatment with hot air, 5-10 per cent of the water being removed; and also to the melting, calcination and comminution of the hydrated phosphates.  In this last process about 5 per cent of water is left in the product.
Patent GB-708568-A (GB)
Title: Improvements in and relating to corrugated materials suitable for use in buildings
Inventor: DEW RAYMOND MARCUS
IPC: E04C2/32
Filed: 1951-12-14
Abstract: Corrugated foils, e.g. 0.01 to 0.05 inch thick, of unplasticized or only lightly plasticized polvinyl chloride or a copolymer obtained by polymerizing vinyl chloride with a minor proportion by weight of another ethylenically unsaturated organic compound copolymerizable therewith have corrugations of a shape such that they will engage and interlock with similar corrugations in a second foil.  When plasticized the polymer preferably contains not more than 10 per cent. of its own weight of plasticizer.  The foil may be used for false ceilings, wall-panelling and roof-coverings.  Fillers, pigments, stabilizers and anti-static agents may be incorporated with the polymer.
Patent GB-783972-A (GB)
Title: Method and apparatus for the production of bitumen road surfaces of increased density by means of rollers
IPC: E01C19/29
Filed: 1954-10-12
Abstract: 783,972. Road rollers. OBERBACH, J. Oct. 12, 1954 [Oct. 23, 1953 ; July 27, 1954], No. 29329/54. Class 6(1). A roller for use in constructing road surfaces is arranged so that the indentation depth and the load of a plurality of roller bodies are adjustable independently of each other. As shown the roller is provided with wheels 12 which run on tracks 13 and hollow support members 18, 19, 20 are arranged transversely and interconnected by beams 21 to form a rigid body. The members 18, 19, 20 may be filled with ballast. The rollers 16 which may be hollow and filled with ballast are provided with shafts which are loosely rotatable in L-shaped members 15 which are pivoted at 15a to the body and are provided with pressure cylinders 17 which are operated by a valve 28 by means of a handle 34 which also controls a driving motor 22. The indentation depth y is adjusted by means of stops 23 which abut on the members 15 and the consolidation pressure of the rollers is increased by means of the pressure cylinders 17. The valve 28 is so coupled to the handle 34 that when the roller is stationary the rollers 16 are raised clear of the ground. In a modification a roller is mounted on a shaft provided with plates which slide in guides and the movement of the roller in a downward direction is limited by adjusting screws. The pressure exerted by the roller is adjusted by means of removable weights mounted on arms which bear on the adjusting screws.
Patent GB-670383-A (GB)
Title: Improvements in or relating to radar systems
Inventor: BRANDON PERCY SAMUEL
IPC: G01S13/34
Filed: 1949-11-16
Abstract: 670,383. Radiolocation. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. July 31, 1950 [Nov. 16, 1949], No. 29363/49. Class 40 (vii). A frequency-modulated radar system of the spectrum analysing receiver type, wherein the beat notes produced as a result of heterodyning the transmitted and received signals are analyzed by a circuit having a pass-band of cyclically varying mid-frequency, comprises two modes of operation, in one of which the signal-to-noise ratio is improved over that in the other while the time taken to search a given band of ranges is increased. In the first mode of operation pulses of beat-note energy as indicated in Fig. 1b are produced at the frequencymodulation rate by gating the beat-notes by a pulse waveform generated in synchronism with the frequency-modulating waveform, Fig. la, the pulses of beat-note energy being then passed to the spectrum-analysing circuits. In the second mode of operation giving the improved signal-to-noise ratio but the slower scanning rate, the gating pulses occur at one-tenth of the modulation frequency whereby pulses of beatnote energy as indicated in Fig. 1c are produced, these pulses being applied as before to the spectrum-analyzing circuits.
Patent GB-1320793-A (GB)
Title: Method for inhibiting the attack of alkaline solutions on alkali  sensitive substrates
IPC: C23F11/06
Filed: 1970-06-17
Abstract: 1320793 Cleaning composition ROHM AND HAAS CO 17 June 1970 [18 June 1969 (2)] 29430/70 Heading C7E [Also in Division C5] Alkali - sensitive materials are protected from attack by alkaline solutions used in cleaning by incorporating in said solutions (1) one or more of Ca, Ba, and Sr ions and (2) at least 0À03wt per cent of a surfactant which is (a) an alkyl glycoride ROG m H where R = C 6  - C 18  alkyl connected to the number one atom of the glycosyl radical through the oxygen and m is 1 to 4, (b) an ethylene oxide adduct of (a) containing up to two ethylene oxide units per glycosyl radical, or (c) aminocarboxyllc acid having a # C 10  alkyl radical, or a metal salt thereof. A third component may be present which is a water-soluble naphthalene derivative, e.g. 3 - hydroxy - 2 - naphthoic acid, 2, 3 - dihydroxy naphthalene, isopropyl naphthalene sulphonate, dimethyl naphthalene sulphonate or methyl propylnaphthalene sulphonate. The alkali - sensitive material may be Al, Zn, Sn, Pb or alloys thereof or a siliceous material, e.g. glass or vitreous enamel. The solution of Ba, Ca, and/or Sr ions is preferably 0À001 - 0À05M, the ions being derived from the oxide, hydroxide, acetate or sulphate; the cleaning solution may also comprise a solvent such as kerosene or ethylene glycol monobutylether.
Patent GB-1208636-A (GB)
Title: Handle assembly
Inventor: GODDARD WILLIAM HARVEY
IPC: F16B5/00
Filed: 1968-06-20
Abstract: 1,208,636. Handle fixings. EASTMAN KODAK CO. 20 June, 1968 [26 June, 1967], No. 29502/68. Heading B4K. [Also in Divisions A4 and E2] A lever 18 has a knob 4 detachably secured to a one end thereof, the end of the lever having a slot 22 opening into an aperture 24 and the knob having a pair of spaced-apart resilient fingers 14 force-fitted into the aperture 24. The knob is provided with a slot 16 in alignment with the fingers and the edges of the knob may be serrated to enhance hand-grip. The base of the fingers may be relieved at 21 to improve their resiliency.