baber/WOPTO huggingface dataset:
Patent GB-389917-A (GB)
Title: Improvements in or relating to apparatus for generating electric waves
IPC: H03B17/00
Filed: 1931-12-03
Abstract: 389,917. Valve circuits. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, and ESPLEY, D. C., c/o General Electric Co., Wembley, Middlesex. Dec. 3, 1931, No. 33510. [Class 40 (v).] In tone-frequency multiplex telegraphy, harmonics are extracted from a square, triangular or other wave-form comprising odd harmonics only, and their amplitudes are equalized by means of condensers or inductances. Thus from a fundamental of 60 #, signalling frequencies of 420, 540, 660 .., 2460 # may be obtained. In the arrangement shown, square waves, comprising harmonics whose amplitudes are inversely as their frequencies, are fed to a valve 13 from a commutator, a vibrating relay, a tuning-fork contact-breaker, or a photoelectric cell 11 intermittently illuminated through an interrupting disc 10 driven by a phonic motor 9 under the control of a tuning-fork 1. The condenser 16 and resistances 14, 17 are so proportioned that the harmonics applied to the grid of valve 18 are differentially attenuated so as to be of equal amplitude within the range required for signalling. The impedances 19, 20, 21 are so chosen that the signalling frequencies are amplified to substantially the same extent while lower frequencies are attenuated. The output of the system is passed to signalling channels such as 26, 27 containing keys 25 followed by filters 28, 30, and preceded, if desired, by filters such as 29. In a modification, Fig. 2 (not shown), the resistances 14, 19 are replaced by inductances so dimensioned as to produce the desired result. In a further modification a triangular wave-form may be applied to the input valve 13. The input amplitudes of the harmonics are then inversely proportional to the squares of their frequencies instead of to the first powers of these, and the output amplitudes are equalized by the use of two equalizing stages 14, 16, 17.
Patent GB-522942-A (GB)
Title: Improvements in or relating to apparatus for testing gas
IPC: G01N27/16
Filed: 1938-11-18
Abstract: 522,942. Gas-testing apparatus. MINE SAFETY APPLIANCES CO. Nov. 18, 1938, No. 33576. Convention date, Nov. 24, 1937. [Class 1 (i)] [Also in Group XXXVI] Apparatus for detecting and determining combustible gases in air, e.g. methane in mine atmospheres comprises detector and compensator filaments in a Wheatstone bridge circuit, over which the air is passed, means for maintaining a constant voltage drop across the detector filament by measuring and adjusting to a standard the voltage drop in a branch of the bridge in parallel with the detector and a device for interrupting, or reducing, to a value close to zero, the current in the crossconnection between the two parallel branches of the bridge. In the apparatus shown in Fig. 2, the electrical diagram of which is shown in Fig. 4, the gas is drawn through detector and compensator units 10 and 16 by an aspirator bulb 30, flash-back arrestors 86 and 88 being included before and after units 10 and 16. The apparatus is initially adjusted by opening the top 44 which brings galvanometer 38 into readable position and closes switch 50. The voltage drop across the detector is set by holding down plunger 53 to throw the doublepole switch 51 to the check position in which the galvanometer 38 is connected across resistance 32 and the cross branch 30 is opened. As an alternative to opening the cross-bra,nch DB a high resistance may be inserted to reduce the current therein to nearly zero. The resistance 64 is then adjusted by knob 68 to bring the pointer of the galvanometer to a check marking on the dial. This setting may be performed in or out of the combustible gas-air atmosphere. The apparatus is adjusted to electrical zero by throwing the scale-switch 52 to the most sensitive position and, if necessary, pulling out knob 66 to lock it with shaft 72 of resistance 62 and turning it until the galvanometer is brought to zero. The check setting is readjusted and the electrical zero is again adjusted before knob 66 is disengaged from shaft 72. When the plunger 53 is released, throwing the double-pole switch 51 to the lower set of contacts the apparatus is in the read position. Details of the detector and compensator filaments and appropriate values for the resistances in the circuit are given.
Patent GB-1404012-A (GB)
Title: Electronic checking systems
Inventor: BOSNYAK ROBERT J
IPC: G07F7/08
Filed: 1972-07-18
Abstract: 1404012 Locking systems; keys R J BOSNYAK and JOHN WUN-SING CHU 18 July 1972 [19 July 1971] 33633/72 Heading E2A [Also in Division G4] In an electronic lock system insertion of a key 75, Fig 3 (or operation of a keyboard, see below), will open a lock 144 only if the outputs b' 1 ....b' m  from a reference memory 122 in the lock agree with the outputs b 1 ....b m  from a memory 123 located in the key, both memories being accessed in use by a counter 124 actuated by a push button 152. Pressing button 152 causes a flip-flop 136 and a pulse generator 137 to set a flip-flop 153 and start an oscillator 125 which increments counter 124 whose outputs a 1 ....a n  range from 0....0 to 1....1 to access 122, 123. The memory outputs are fed to a comparator 120 whose outputs Q 1 .... Q m  are 1 in the absence of a mismatch, when an inverter 141 prevents the resetting of flipflop 153. At the end of the comparison output a n+1  becomes 1: if there has been no mismatch a NAND gate 143 has both inputs (from 124 and 153) equal to 1, wherepuon its output changes from 1 to 0 to operate a solenoid controlling the lock. Memories 122, 123 are read only memories and may be MOS, fusible, amorphous semiconductor or avalanche induced electromigration R.O.M.s. Memory 122 may be replaced by a 'Master R.O.M.' and 'tenant R.O.M.' arrangement (Fig 2, not shown) for the use of a master key which can select the master R.O.M. by e.g., operating a relay controlling a switch. The memories may be adapted to indicate the identity of the lock and of the key being inserted therein. The system may be used in combination locks for bank vaults, etc by replacing the key and its memory 123 by an 8-digit keyboard and an octal to binary converter (Fig 7, not shown; here m=n=3). A trial counter 117 counts the number of times that the insertion of a key in the lock results in a mismatch, and causes a solenoid 147 to actuate an alarm after a predetermined number of abortive attempts have been made. A 'maximum voltage sensor' may also be incorporated to trigger another alarm if a burglar should try to break down the system by forcing large currents through it.
Patent GB-512773-A (GB)
Title: Portable luminous apparatus
IPC: H05B41/24
Filed: 1937-12-06
Abstract: 512,773. Signs; supply systems for discharge lamps. PUBLICITE ROGER CONUAU, NEON PORTATIF MAD. Dec. 6, 1937, No. 33724. Void. Convention date, Dec. 5, 1936. Drawings to Specification. [Class 38 (iv)] [Also in Group XVIII] A portable illuminated sign comprises a number of neon or like tubes each supplied by a transformer in close proximity to the tube the primary windings being energized by low tension interrupted current from an accumulator. The electromagnetic interrupter has two armatures and a switch enables substitution should one armature stick. Switches also permit selective operation of the tubes. The metallicparts, such as the uprights supporting the overhead portion of a "sandwich board," are used as conductors for the low tension current. The accumulator has lateral terminals resting on horizontal contact studs to permit simple installation in a suitable housing.
Patent GB-857047-A (GB)
Title: Register zero test
IPC: G11C11/23
Filed: 1957-10-29
Abstract: 857,047. Digital electric calculating-apparatus. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 29, 1957 [Nov. 29, 1956], No. 33729/57. Class 106 (1). A circuit for testing for the presence of a zero value in a multiorder register of a predetermined radix, comprises a pulse source, means for successively entering at predetermined pulse times a number of pulses equal to said radix from said source into each order of said register, each pulse simultaneously entering all orders to step the value registered therein, including a logical or circuit connected to receive carry pulses from each order of the register so as to produce an output whenever one or more orders of the register produce a carry, gating means operable in synchronism with said pulse source to transmit such output at each pulse time except one, and indicating means having a zero and non-zero indicating state operable under control of said gating means. The circuit described, Fig. 1A, tests a multi-order decimal register 81 for a zero which may be either a positive zero, represented by a 9 in each denomination together with a positive signal on the left-hand output of a sign trigger 98, or a negative zero, represented by 0 in each denomination together with a positive signal on the right-hand output of the sign trigger 98. To effect the test ten pulses are applied, from a lead 123, to each denomination and the carries so produced are passed via an OR gate 128 to two gates 132, 134 controlled respectively to be ready to open for the period of application of the last nine of the ten pulses and the period of application of the first nine of the ten pulses. If the register is registering a positive zero (i.e. all 9's) then the first of the ten pulses causes a carry in each denomination, which carry cannot pass gate 132, since it does not open until the second of the ten pulses is applied (and gate 134 cannot open because the right-hand output of the sign trigger 98 is not positive) so that a normally on trigger 140 is not turned off and when its state is examined after the application of the ten advance pulses a zero terminal 146 is marked, whereas if the register is registering a positive non-zero value at least one carry will occur after the first of the ten advance pulses, which carry passes through gate 132 to turn trigger 140 off which results finally in the marking of a non-zero terminal 152. When a negative value is registered in the register, gate 134 (as opposed to gate 132) is the operative gate, and for a zero (all 0's in the register) all the carries should occur simultaneously when the last of the ten advance pulses is applied. Thus when the register is positive carries which do not occur with the first of the ten advance pulses signify non-zero and when the register is negative carries which do not occur with the last of the ten advance pulses signify non-zero. The register shown is said to form part of the computer described in Specification 673,759. Specifications 784,513, 794,171 and 844,308 also are referred to.
Patent GB-632639-A (GB)
Title: Improvements in pillars and vehicle bodies incorporating the same
IPC: B62D25/04
Filed: 1945-12-13
Abstract: 632,639. Hollow metal pillars and members. BRUSH ELECTRICAL ENGINEERING CO., Ltd., and RAYER, F. H. Dec. 13, 1945, No. 33733. [Classes 20(i) and 20 (ii) ] [Also in Group XXXII] In a structural member or pillar, primarily for vehicle bodies, having spaced flanges 2, 5 connected by bowed webs 3, at least one of the spaced flanges 2 consists of two outwardly directed flange members 4 integral with the bowed webs 3 and a further member 2 having a plane face in  contact with members 4 and inturned marginal parts 6 that lap around the members 4 and are located against the inner face of the latter. The webs 3 may be bowed' inwards or outwards or of cruciform section as in the prior Specification 597,257. Specification 337,977, [Class 20(iv)], also is referred to.
Patent GB-413196-A (GB)
Title: Collapsible packing cases
IPC: B65D43/00
Filed: 1933-12-01
Abstract: 413,196. Packing - cases; fastenings. SENNEWALD, A., 70, Dresdnerstrasse, Leipsic, Germany. Dec. 1, 1933, No. 33758. [Class 18.] In a collapsable packing case provided with detachable corner supports 3, Fig. 5, and wall planks, the lid carries rotary wedges 16, Fig. 6, which project through the lid frame 8, Fig. 11, and secure the lid by engaging under hooks 19 formed on the supports 3. The wedges are rotated by inserting a key in recesses 18. The bottom of the case comprises a frame 1 covered with planks and provided with corner brackets 21, and the supports 3 are formed with lugs 4 which engage in slots in the brackets 21 and in an upper frame 7. Intermediate supports may be provided between the corner supports. The lid planks are inserted through an aperture 9 in the lid frame, the last plank being secured by a pin, &c. After the case has been disassembled, the lid can be secured on the base between the brackets 21 by rotating the wedges so that they engage further slots in the upper parts of the brackets 21, and the side walls and corner supports are accommodated between the lid and base. When the lid is secured, the wedges are sealed by passing wires through perforations 20 in the portions of the wedges projecting outside the case.
Patent GB-812998-A (GB)
Title: Improvements in storing and pumping systems for liquefied gas
IPC: F17C7/02
Filed: 1956-11-06
Abstract: 812,998. Storing liquefied gases; reciprocating pumps; forcing liquids by gaseous pressure. UNION CARBIDE CORPORATION. Nov. 6, 1956 [Dec. 2, 1955], No. 33894/56. Classes 8(2), 102(1) and 102(2). A storage and pumping system for liquefied gas comprises a heat insulated tank for holding the liquified gas at normal storage pressure, a pump for withdrawing liquid from the tank and a pressure building means adapted to raise the pressure in the tank above the normal storage pressure in which the pump control means are arranged to render operative pressure control means which in response to the pressure within the tank control the flow of a pressure building gas to the tank to maintain the pressure within a higher pressure range during the pumping period. Three embodiments are described which are suitable for use with cold pumps. Pressure building is obtained by an evaporating coil 208 connected between the top and bottom of the tank S. Flow through the coil 208 is controlled by a solenoid operated valve 209 the solenoid of which is controlled by a pressure switch 211 subjected to the tank pressure, the switch 211 being in series with a switch 212 operated by the motor control circuit. In the second embodiment, Fig. 2 (not shown). the valve in the evaporating circuit is under the control of two pressure switches the lower pressure switch being by-passed when the pump circuit is energised. In the third embodiment, Fig. 4 (not shown), the evaporating circuit control valve is under the control of a pressure switch brought into circuit when the motor circuit is energised and the valve and pressure switch are by-passed by a low range pressure operated valve. The evaporating circuit also includes a relief valve under the control of two pressure switches one of which is operated in the high range and the other in the low range. In the second and third embodiments liquid may be withdrawn from the tank by the gaseous pressure only acting on the liquid. In a modification, Fig. 3 (not shown), the pressure building circuit comprises an external source of pressure gas which is fed to the upper part of the tank S through two pressure operated valves in parallel the higher pressure branch including a valve which is opened when the pumping circuit is energised.
Patent GB-1280524-A (GB)
Title: Improvements in or relating to cleaning tools
Inventor: KING EDWIN AMBROSE
IPC: B25G3/00
Filed: 1969-07-04
Abstract: 1280524 Hand-tool handles E A KING and R C KING 25 June 1970 [4 July 1969] 33932/69 Heading B4K An adapter for linking the head and handle of a broom, brush or mop comprises a plate 2 to engage the head, a tubular projection 4 to receive the handle and a detachable support 18 adjustably attached to the projection 4. The rear part of projection 4 has a slot through which a bolt 24 projects and the projection 4 also allows a handle 32 to be gripped by a bolt 12. The adapter may be made of metal or plastics and the support 18 may be pre-formed or be deformable by the manipulator of the tool. At the rear of the plate there may be teeth (8) Fig. 1 (not shown) and there are inturned flaps 16 to limit the engagement of the handle.
Patent GB-194428-A (GB)
Title: Improvements in electrolytic cells
IPC: C25B9/17
Filed: 1921-12-17
Abstract: 194,428. Cranston, J., and Le Bar, W. D. Dec. 17, 1921. Cells; electrodes; supporting; electrolyte, circulating; alkalis, chlorine, and hydrogen, obtaining. - A perforated electrode plate 15 is formed with a trough 19 to receive liquid percolating through the plate. 'Two such plates acting as cathodes and covered internally by diaphragms are secured against the open sides of a cell body 1 of slate, concrete, stone, &c. Conductors 18 pass up through flanges 13 on the body. On each side of the cell a hydrogen-collecting chamber is formed by a plate 21 dipping into the liquid in the trough and secured at its side edges to the cell body and at its top edge to the flange 13, which terminates in bevelled ends a little distance from the ends of the cell. Sides 4 of the cell body extend below the surface of the anode liquid. A partition 7 integral with the cell body separates the upper parts of two rows of graphite anodes 8. Plates 9, 10 carrying the two rows of anodes are detachably secured to the top of the body, which is thus closed to form a chlorine chamber. By reversing these plates, fresh .anode surfaces can be presented to the cathodes when the rows become worn on one side. The lower faces of the plates may be protected by paint, enamel, &c.
Patent GB-1317192-A (GB)
Title: Laser impinged recording apparatus
IPC: H04N1/207
Filed: 1970-07-14
Abstract: 1317192 Recording apparatus I BROWNING and P R JOHNSON 14 July 1970 [14 July 1969] 34184/70 Heading H4F A record forming material, such as ink, dye, chemical resist, wax, an adhesive or a metal, is deposited on one surface of a printing member subsequently positioned adjacent a record medium, and a laser beam is scanned across the printing member and is intensity modulated between a level at which the record forming material remains on the printing member and a level at which the record forming material moves to the record medium. Suitable record media for the materials above include paper, fabric, plastics, film, metals and ceramics. Preferably a rigid or flexible lens mosaic which may include a multiplicity of light fibres is provided to concentrate the modulated laser beam at specific points on the printing member, the latter being formed, e.g. by a half tone screen. Thus in Fig. 3 a document 51 is moved by drive means 52, 53 and scanned laterally by light from a source 54 and a mirror drum 25. Signals from photodetectors 56, 57 modulate light from a laser 21 before it is reflected from another face of the drum 25 and focused by a lens mosaic 24 at successive ink containing interstices of a screen 31. The mosaic 24, screen 31 and record medium 42 are moved synchronously with the scanning of document 51. In a modification, the lens mosaic and printing member are integral, e.g. ink bearing cavities are formed in one surface of the mosaic, Fig. 6 (not shown), by initially scanning the mosaic by a more intense unmodulated laser beam, and in either embodiment the mosaic may be in the form of a rotatable semi-cylinder. The apparatus of Fig. 3 may be be adapted for colour printing either (a) by treating the printing member 31 with different inks for different scans (b) by using different printing members bearing different inks during successive scans or (c) by using a plurality of such apparatuses, Fig. 9 (not shown), the scanning of document 51 being a common operation. Colour filters 65<SP>1</SP>, 65<SP>1</SP>, are provided.
Patent GB-426974-A (GB)
Title: Machine for moulding butter or the like
IPC: A01J21/02
Filed: 1933-12-05
Abstract: 426,974. Moulding butter, lard, &c. by rotary-mould-table machines. HARTMANN, C. W., and HANSEN, A., Lyngby, near Copenhagen. Dec. 5, 1933, No. 34188. Convention date, Dec. 21, 1932. [Class 87 (ii)] In a machine for moulding butter, lard, or like soft plastic material into shaped portions of equal weight, wherein the material is fed into moulds successively brought to a filling position, the cross-sectional area and so the effective capacity of the moulds is adjusted by the provision of a relatively adjustable wall element in each mould adapted to vary the dimension of each wall in the plane transverse to the direction of feed of the material into the mould. The moulds 9 may be arranged in a rotatable disc 8 and the material fed from a hopper 5 by two convergent worms into a chamber 6 and thence by a piston 7 into the mould. The disc 8 is partly accommodated in a horizontal slot in an extension 10 of the hopper and a channel 11 is provided for returning excess material from open ends of the moulds. The adjustable wall element may comprise two adjacent sides 12 moved by an arm 14 normally forced to an open position by a spring 13. As a mould approaches the filling position, a roller 15 on the arm 14 engages a fixed arcuate strip 16 so as to force in the sides 12. The position of the strip determines the ultimate size of the moulds and it can be adjusted by screws 17. An ejecting plunger is provided below a further position in the disc. The rods of the piston 7 and ejecting plunger, the shaft of the disc and the worms 4 may be driven in synchronism.
Patent GB-307977-A (GB)
Title: Improvements in or relating to automatic or semi-automatic telephone systems and apparatus
IPC: H04Q3/00
Filed: 1927-12-17
Abstract: 307,977. Standard Telephones & Cables, Ltd., and Wright, E. P. G. Dec. 17, 1927. Automatic e x c h a n g e systems.-In a Strowger-type selector having two sets of wipers, on some levels both sets hunt simultaneously over 20-line. groups whilst on other levels the lines engaged by the two sets are numerically separated. Thus in the group selector shown, for digits 1 - - 7 simultaneous double-hunting occurs; for digits 0, the selector hunts over its upper set of wipers - 1, + 1, T1, only; whilst for the digit 8 selector is first released and connects up its lower set of wipers - 2, + 2, T2, and then responds to a. further digit which must be 1,8,9 9 or 0, hunting then takes place over the lower set only. The invention may also be applied to rotary connectors. Operation for digits 2 - - 7. On these levels springs NP2 operate so that the stepping relay G, energized in the usual way by the change-over relay C, closes a circuit for the wiper-switching relay Q which locks to the test-wiper T1 and connects the stepping relay G to the other testwiper T2. Relay Q is thus energized as long as wiper T1 engages busy lines whilst relay G interacts with the rotary magnet R in the usual way as long as wiper T2 finds busy lines. When either wiper set reaches an idle line, relay G does not re-energize and relay H switches through, relay Q being locked over contacts 3 of H to connect up wipers - 2, + 2, T2, if the line engaged by the other set is busy. Operation for digits 9, 0. Springs NP2 are not closed so that relay Q cannot energize and hunting takes place over test wiper T1 in the usual manner. Operation for digit 8. On this level springs NP1 operate completing circuits for the upper winding of two-step relay DA and for the release magnet Z. When the switch has released, relay DA operates fully and permanently energizes relay Q to connect up wipers - 2, + 2, T2. In response to a further digit 1, 8, 9 or 0, hunting takes place over the lower set of wipers only.