baber/WOPTO huggingface dataset:
Patent GB-254453-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone systems
IPC: H04Q3/00
Filed: 1925-05-05
Abstract: 254,453. Coventry Automatic Telephones, Ltd., and Fairbairn, E. P. May 5, 1925. Automatic and semi-automatic exchange systems. - A trunk-offering connector, on finding a wanted line busy, responds to ringing-current transmitted over a twowire trunk by a distant calling operator and in responding completes a talking connection to the line. If tne wanted subscriber wishes to take the call, the operator asks both subscribers to hang up and the connector then automatically rings the wanted line in the usual manner. The same connector is used both for local and for trunk calls. In the system shown in the Figure, the connector is adapted for automatic hunting over lines to a private branch exchange. Ordinary call. When the connector is seized, relays 1, 2, 3 operate and the tens digit is repeated over contacts 11, 17, 19, 20 to the vertical magnet 23. At the end of the digit, relay 3 relapses and the units impulses pass over back contact 20 to the rotary magnet 24 in parallel with relay 4 which connects test relay 5 to the test wiper 27. If the called line is the first line to a P.B.X. and is busy, stepping relay 9 operates over contacts 32, 31 and the earthed fourth wiper 28 (the third and fourth terminals of all P.B.X. lines except the last being strapped together) and completes circuits 14, 33 for relay 3 and 14, 23, 22, 34 for the rotary magnet 24, the latter unlocking relay 9. Stepping continues until an idle line is reached when relays 4, 5 release and relay 6 energizes over wiper 27 to cause the application of ringing-current in the usual manner. If no idle line is found, relay 5 remains energized at the last line and transmits busy tone over the circuit 46, 47, 48, 49. Preferred call. A trunk operator, on receiving the busy signal connects ringing-current to the lower incoming conductor thus causing relay 1 to release intermittently and to close a circuit 14, 15, 21. 18 for relay 3 which connects up the lower winding of relay 10. This relay which previously received insufficient current over its upper winding, resistance 53 and wiper 27, now pulls up. owing to the passage of the ringing-current through its lower winding. When the ringing- current ceases, relay 10 remains locked to wiper 27 but relay 3 releases and causes the release also of relay 5. A talking connection over contacts 65, 62; 57, 63 now exists to the called line and the operator communicates with the wanted subscriber and if he elects to take the trunk call asks both subscribers to hang up thus releasing relay 10. Relay 6 now operates over wiper 27 and the wanted line is rung. The connector may be so arranged that it will only make connection to a busy line when the latter is engaged in a local call. This is effected by making the test terminal busy by a resistance earth when a line is seized for a trunk call and by providing an extra (marginal) relay in series with the test relay 5, this extra relay only operating to permit the release of relay 5 when the test wiper engages a terminal marked by a direct earth.
Patent GB-1312753-A (GB)
Title: Self-adapting synchronization system for reading digital information  from a moving support
IPC: G11B20/16
Filed: 1971-04-27
Abstract: 1312753 Digital data read out ING C OLIVETTI & C SpA 27 April 1971 [27 April 1970 16 April 1971] 11687/71 Heading G4C A system for synchronizing the reading of digital data from a moving support, e.g. magnetic tape is adapted for variation in the speed of the support by generating timing signals whose duration varies as the duration between the last two clock pulses. Digital data is recorded by phase modulation or frequency duplication so that the data pulses lie between periodic clock pulses (Fig. 1, not shown). First embodiment, Fig. 2.-A preamble pulse 0 sets bi-stable 5 to 1 which blocks transistor 7. Capacitors 9 and 11 are hence charged up. The first clock pulse passes through gates 17 and 6, saturates transistor 7 thus transistors 9 and 11 temporarily discharge and block transistor13. Capacitor 11 is charged from source 12 and its voltage enables transistor 13 after a time equal to 2/3rds of that between the last two clock pulses. A data pulse arriving during this period goes to output 21 via gate 18 which is enabled for this period. The next clock pulse restarts the cycle. Second embodiment, Fig. 4.-Three reversible counters A, B, C are provided, the counters A, E commencing counting forward together after a clock pulse by receiving pulses from a generator (not shown) and line 31. A divider feeds counter B with a backward pulse for a certain number of pulses received by counter A so that counter B counts at a fixed proportion of the rate of counter A. At the receipt of the next clock pulse the contents of counter B are placed in counter C and counters A and B are reset. Counter C then starts counting in the reverse direction and when it reads zero gate 18 is disabled and no more data pulses are read. Thus in both embodiments data is only read for a predetermined portion of the clock cycle regardless of the tape speed.
Patent GB-542205-A (GB)
Title: Improved manufacture of asbestos cement tubes
IPC: B28B21/48
Filed: 1939-04-18
Abstract: 542,205. Cement tube-making machines. BRUYN, M. H. April 18, 1939, No. 11689. [Class 99 (ii)] A preformed strip of asbestos cement is wound helically on a mandrel 15 which is rotated and moved axially past means for feeding the strip 20 in a non-adjustable direction. The angle at which the strip meets the mandrel is varied by rotating the track 3 on which the carriage 6 travels. The track is mounted on wheels 2 travelling on circular rails 1 and pivots about the support 5. A motor 18 drives the carriage through a leading screw 12 and a motor 19 rotates the mandrel.
Patent GB-1240333-A (GB)
Title: Improvements in or relating to apparatus for dispensing filling material to pastry and other receivers
Inventor: WIGHTMAN JOHN CLIFFORD
IPC: A21C9/04
Filed: 1968-03-11
Abstract: 1,240,333. Depositing apparatus. D. AYRES JONES & CO. Ltd. 12 May, 1969 [11 March, 1968], No. 11706/68. Heading A2A. [Also in Division A4] In an apparatus for dispensing liquid or semi-solid material, e.g. paste, batter or filling, a pump (not shown) is driven in one direction to dispense the material on to a tray carried by a conveyer 10, after a preset time the delivery is interrupted by stopping the pump and immediately reversing the pump so that dripping of the material is minimised. The conveyer and pump are driven in one direction by motors 12 and 13, respectively, through variable transmission means 15, 31. Motor 12 is also arranged to apply a temporary reversing movement to the pump and operate a jogging device for momentarily lowering the conveyer when the pump is shut off. The pump is driven in one direction by engagement of a clutch 32 which causes the shaft 33 to rotate through a free-wheel device 34. After a preset time the clutch 32 is disengaged and a clutch 21 is engaged thereby reversing the rotation of the shaft 33 and therefore of the pump.
Patent GB-1494158-A (GB)
Title: Process for manufacturing a film-forming solution
IPC: H01L21/225
Filed: 1976-03-23
Abstract: 1494158 Phosphorus-containing polysilicate solutions B G GRIBOV K V ZINOVIEV B A SALAMATIN and T A KUZMINA 23 March 1976 11711/76 Heading C3T [Also in Division H1] A film-forming solution for doping semiconductors is obtained by adding a tetra-alkoxysilane, optionally with dioxan, to a solution of orthophosphoric acid (as dopant) in a water/ dioxane mixture, the resulting solution containing 0À4-1À5 moles of silane and 1À5 to 7À5 moles of water per litre, and 0À36 to 1À28 moles of H 3 PO 4  and 3-5 moles of water per mole of silane. Preferably the temperature does not exceed 3‹ C. before, or 25‹ C. during, the addition of the silane; 0À005-0À04 moles/litre of HCl may be added after the silane. In the examples solutions containing the equivalents of a 1 : 1 wt. ratio of P 2 O 5  and SiO 2  are prepared by adding to dioxan 4À5 to 13À5 mls. of water, 2À35-7À05 mls. of 85% H 3 PO 4 , then, at -3‹ C. to 3‹ C. (or room temperature, in example 7), 11 to 33À5 mls. of tetra-ethyl, -methyl, or -propyl silicate, followed by 0À15 mls. of HCl at room temperature; they are then filtered and dispensed into hermetically sealed container.
Patent GB-716552-A (GB)
Title: Improvements in magneto-electric generators
Inventor: LEWITH FRANK
IPC: H02K1/14
Filed: 1952-06-23
Abstract: 716,552. Cores for dynamo-electric machines. HAWK, Ltd. June 23, 1952 [May 21, 1951], No. 11846/51. Class 35 [Also in Group XXII] Stator parts 10 for an imbricated pole stator are pressed in such a manner that the length of the poles 2 is greater than the radius from which they were originally cut out. In one method of doing this, a cup-shaped pressing, Fig. 2, has its bottom cut away to leave a series of tongues 2 separated by cuts 3 at the centre. This unit is then pressed in a die 6 having an annular groove 7 by means of a punch 5 which exerts, axial pressure on the rim 1 of the cup thus forcing it radially inwards and causing the tongues to bend axially upwards. The compression of the flange part 17 towards the centre has the effect of making the axial length of the tongues greater than they would be if merely bent up, in fact, greater than the radius r. In a modification the tongues are pressed from a plane disc whose edges are turned down axially for the securement as by welding or swaging of an outer tube. It is also stated that the tongues may be stretched.
Patent GB-1023866-A (GB)
Title: Improvements in or relating to cabinets for mounting equipment
IPC: A47B81/00
Filed: 1963-03-26
Abstract: 1,023,866. Cabinets. A. MITTON. June 11, 1964 [March 26, 1963], No. 11870/63. Heading A4B. [Also in Division H1] A cabinet 1 houses a chassis, e.g. for supporting electrical equipment, comprising opposed perforated plates 7 between and to which equipment pairs of supporting bars 15 are detachably secured in any selected location. As shown, the plates 7 are secured to and spaced from the cabinet sides by brackets 9 and bolts 10, further bolts 12 engaging the rear wall 6. The plate perforations 13 are selectively engaged by inwardly directed bolts 20 securing angle brackets 17 to which the bars 15 are clamped by screws 18 and plates 19. In an alternative arrangement (not shown) the plates 7 are secured to a support separate from the cabinet and the latter, in this case being open backed, is fitted over the chassis and secured to the support. A hinged door 2 (or doors) is provided.
Patent GB-512973-A (GB)
Title: Improvements in or relating to pickers for looms
IPC: D03D49/36
Filed: 1938-04-20
Abstract: 512,973. Pickers. BACON, H. M April 20, 1938, No. 11907. Convention date, Feb. 18. [Class 142 (iii)] The picker comprises parallel 'vertical layers 7, 12 of canvas, ducking or ticking impregnated with rubber, or derivatives of divinyl butadiene or a polysulphide resin with a picker stick passage way 2 which is tapered and is flared outwardly with rounded edges 3, 4, 5, 6, at one or both ends. There is an ovoid shuttle receiving recess 10 and an angular passage 11 for the shuttle point. The resilient material and fabric layers are moulded and vulcanized and compressed so as to be denser near the wear surfaces than elsewhere.
Patent GB-363268-A (GB)
Title: Improvements in machines for making, filling and closing tea and like bags
IPC: B65B61/24
Filed: 1931-04-22
Abstract: 363,268. Wrapping bags in paper. ANDERS, E. R., (trading as SEELIG & HILLE, R.), 27, Zwickauer Strasse, Dresden, Germany. April 22, 1931, No. 11919. Addition to 360,669. [Class 94 (i).] Bags 2, filled, closed and provided with a label by the machine described in the parent Specification, are removed from a delivery conveyer by a rotating yoke 1 provided with grippers which are actuated by a fluid cam g, on the shaft a of the yoke and a lever mechanism, the grippers presenting the bag to cheeks 3, 3<1>. The cheeks 3, 3<1> rock about axles 6, 6<1> to compress the bag between them and a plunger 4 thrusts the bag downwards towards a fixed table 8. In the meantime a strip of wrapping paper has been gummed and fed on to the table by rollers 21, 22. The bag carries the wrapper with it through a slot in the table 8 and past conveyer rollers on plates 11, 11<1> on rotating shafts 10, 13. The plates 11, 11<1> have bevelled upper edges engaged by rollers 19, 19<1> on arms 5 on the cheeks so that an outward movement of the cheeks opens out the plates and the conveyer rollers for the passage of the bag and wrapper to grippers 25, 26 on a drum 34. These grippers press together the gummed side edges of the wrapper. The label drops through an aperture in the table 8 clear of the wrapper.
Patent GB-1276766-A (GB)
Title: Arrangement for ultrasonic generators
IPC: B06B1/02
Filed: 1970-03-12
Abstract: 1276766 Ultrasonic transducers AMLAB AB 12 March 1970 [12 March 1969] 11964/70 Heading H3T An ultrasonic generator comprises an amplifier T, a reactive impedance Cy connected in parallel across the exciting impedance Lp of an electromechanical element E to form a parallel tuned circuit wherein the maximum current occurring at the resonant frequency of the equivalent series resonant circuit of E is supplied to the primary winding Le of a current transformer, the secondary Lb being connected to Cb to form a series tuned resonant circuit through which the current is in a phase-aiding relationship returned to the control electrode b of the amplifier for automatically adjusting the electrical oscillation frequency to compensate for variations in the mechanical resonance frequency. The transformation ratio is chosen so that T is brought into a pulsed oscillation and E is driven into a maximum change of length during one half period while being allowed freely to regain original length during next half period.
Patent GB-1422166-A (GB)
Title: Apparatus for automatically regulating the elevation of motor vehicle headlamps
IPC: F15B7/00
Filed: 1973-03-13
Abstract: 1422166 Telemotors ROBERT BOSCH GmbH 13 March 1973 [14 March 1972] 12032/73 Heading F1P [Also in Division F4] In an hydraulic arrangement for automatically regulating the head-lamp inclination in a motor vehicle in which there are two interdependent closed hydraulic systems, there is provided a single filling valve in one of the systems, a single pressurerelief valve in the other system and both systems are inter-connected by a normally closed hydraulic by-pass line to facilitate filling of the systems simultaneously with correct adjustment of the head-lamps. Specifically the arrangement comprises two mechanical transmission systems 3,4 associated with respective front and rear axles 1, 2 and each of which is connected to a respective piston, 8, 8' which operates in a respective hydraulic measuring cylinder 5, 6. Working chambers 10, 10' of the cylinders 5, 6 are connected by a common hydraulic line 15 to a first working cylinder 18 thereby forming a first closed hydraulic system which, in response to sensed vehicle attitude variations, displaces a piston 19 in the first working cylinder 18. The piston 19 divides the cylinder 18 into two hydraulic working chambers 20, 21 and is connected by mechanical transmission rods 28 to a first tiltable head-lamp 29. A second closed hydraulic system, formed by the working chamber 21 in front of the piston 19, the hydraulic line 35 and second working cylinder 36, in response to displacement of the piston 19 effects the adjustment in cylinder 36 against the action of spring 43 of a piston 37 connected by mechanical transmission rods 38 to be second tiltable head-lamp 39. The working chambers in all the cylinders are sealed off from their respective pistons by diaphragms. The single filling valve 45 is provided in the first closed system and the single pressure-relief valve 44 is provided in the second closed system. The short-circuit line 32 shown incorporates a non- return valve 33 and inter-connects the working chambers 20, 21 in the first working cylinder 18. Alternatively an externally actuable shut-off valve may be located in the short-circuit line 32, Fig. 2 (not shown). In a further embodiment, Fig. 3 (not shown), the short-circuit line is provided by a stepped axial bore in the piston of the first working cylinder with a non-return valve being located at the step in the bore.
Patent GB-1135821-A (GB)
Title: The manufacture of building blocks
IPC: B28B1/50
Filed: 1966-03-18
Abstract: 1,135,821. Moulding concrete blocks. DUROX INTERNATIONAL S.A. 18 March, 1966 [19 March, 1965 (2)], No. 12099/66. Heading B5A. A plant for manufacturing blocks of aerated concrete, has a moulding station A where a rectangular block 32 of unhardened aerated concrete is produced on a support 1, the block and support being then transported to a roller track 12 and moved to a station B where the block is cut longitudinally into sections 52. The sections are passed to a station C where they are cut transversely into blocks of required size which are loaded into a structure at station D which conveys them to an autoclave E. The mould at station A is composed of clamped walls resting on the support 1, and is charged from a hopper 8. The support comprises an endless belt passing over a table comprising a number of perforated plates 12 through which a pressure medium such as oil and/or air is passed. At station B the support and block are conveyed between pillars 27 and then a plate 28 is lowered to hold the block in position during the longitudinal cutting operation. This is effected by a cutting frame 42 with vertical cutting elements 43 which is coupled to the support at the station which is then moved backwards between the pillars. As the support 1 moves away from the cut block, the block is received by a support comprising transverse bars 38 carried by plates at the top of piston rods of two rows of hydraulic jacks extending lengthwise of the blocks. The jack rods are normally retracted, but are rasied in turn, during the cutting, so that finally the sections 52 are supported on a horizontal table formed by the bars 38. A carriage 61 for transferring the sections 52 to the transverse cutting station C passes beneath the sections and is composed of a railed framework, carried by longitudinally extending rows of rollers (66), Fig. 4, not shown, on which framework longitudinally extending beams are mounted. The beams are vertically reciprocable relative the framework whereby the bars 38 with the sections 52 can be lifted from the jacks and transported to the station C where the sections are cut transversely by a cutter (87, 88). The blocks are then conveyed by the carriage 61 to a loader at station D comprising a carrier structure (101), Fig. 6, not shown, with two vertically spaced pairs of ledges to receive two layers of blocks. The structure is supported by rollers (109) on a frame (113) suspended on wires (115) and vertically reciprocable to bring the ledges into register with the blocks on the carriage 61. When fully loaded the structure (101) engages rollers extending lengthwise in the autoclave. In a modification Fig. 7, not shown, the support 1 is stationary and the receiving support comprising the jacks and transverse members 38 is moved by being formed as a carriage to which the pillars and door 28 is fixed so that the block is pushed against the cutter. The belt (211) of the support 1 extends between rolls (212, 213).
Patent GB-623498-A (GB)
Title: Improvements in motor vehicles
IPC: B60K11/08
Filed: 1947-05-05
Abstract: 623,498. Vehicle collision guards ; vehicle bodies. PATON, C. R. May 5, 1947, No. 12105. Convention date, May 4, 1946. [Classes 103 (ii) and 108 (i)] [Also in Group XXXI] A motor vehicle radiator grille is dispensed with by constructing the front bumper as an air intake from spaced horizontal members 23, 24 connected by vertical guards 26, 27, the wings 17 and bonnet 16 being formed as a unit and hinged at the rearward edge thereof for upward swinging movement, the forward edge being spaced above the bumper assembly, the space so formed together with that between members 23 and 24 permitting the rearward flow of cooling air. Additional cooling air may be drawn from beneath the bumper by a deflector plate (not shown).
Patent GB-1134338-A (GB)
Title: Improvements in or relating to mowing machines
IPC: A01D34/07
Filed: 1966-03-18
Abstract: 1,134,338. Mowers. C. VAN DER LELY N.V. 18 March, 1966 [29 March, 1965], No. 12164/66. Heading A1F. The mower is supported on a frame 2, 3 by means of the beam 4 and is characterized in that it has two swath boards 22, 23 and the driving mechanism for reciprocating the knife bar 8 is connected to the bar between its ends. Drive is transmitted through rod 12 to a gear housing 5 from which a rod sliding in tube 15 reciprocates an arm 19 connected to the bar. It is stated that the mower is approximately twice the standard length.
Patent GB-857617-A (GB)
Title: Improvements in pressure cookers
IPC: A47J27/08
Filed: 1958-04-17
Abstract: 857,617. Lids for resisting fluid pressure. KELLER, M. April 17, 1958 [April 26, 1957], No. 12188/58. Class 123(1) A pressure cooker has a pot 1 with an outturned rim formed with spaced lugs 3 and a lid 7 having a depending cylindrical edge portion 8 with inturned lugs 9, the lugs 9 passing between the lugs 3 when the lid is placed on the pot and engaging thereunder as the lid is rotated to lock it in position, when the lid handle 10 lies above the pot handle 4. The pot is sealed by a resilient packing ring 22 housed within the lid portion 8 and having arms 23, 24 which in use are respectively forced against the lid and the pot rim as the pressure in the pot increases above atmospheric. If the pressure becomes excessive a part of the ring 22 is forced outwardly through a slot 25 in the edge portion 8 and the seal is temporarily broken. To prevent pressure build-up in the pot unless the lid is in the fully-locked position and to prevent the lugs 3, 9 from being disengaged whilst the pot is under pressure a spring- loaded pin 17 is housed in a bore 14 in the handle 10 and has a portion 21 which projects through the edge 8. When the lid is placed on the pot the portion 21 bears on the edge of the pot rim between the flanges 3 and also presses on and distorts the ring 22 to destroy the seal. When the lid is turned to its locked position the pin 17 is forced back into the bore 14 as the portion 21 rides up the oblique edge of one of the lugs 3 allowing the ring 22 to recover its shape and to seal the pot. When the lid is unlocked the pin 17 advances to vent the pot before the lugs 3, 9 disengage.
Patent GB-241117-A (GB)
Title: Improvements in or relating to veneering presses
IPC: B27D1/10
Filed: 1925-05-11
Abstract: 241,117. Buddenberg, G. May 11, 1925. Presses.-In a veneer press of the kind described in Specification 224,456, the parts 1, 2 of the presing beam are moved towards the supporting beam 3, 4 by transverse pressure members 5, and eccentrics on a shaft 9. Horizontal movement of the parts 2, 4 is obtained by eccentrics on a shaft 13, which also serves to operate stops 17, 18. Interengaging teeth are provided on the members of the pressing beam and preferably also on the members of the supporting beam.
Patent GB-681484-A (GB)
Title: An improved gold alloy
Inventor: CHASTON JACK CHAMBERS
IPC: C22C5/00
Filed: 1950-05-17
Abstract: An alloy suitable for use in jewellery has the following composition: Au 73-77 per cent; one or more of Fe, Co & Ni 0.5-10 per cent; Cu the remainder.  The alloy may also contain up to 2 per cent of Ag.