baber/WOPTO huggingface dataset:
Patent GB-784379-A (GB)
Title: Improvements in or relating to electric pulse generators and frequency dividers employing semi-conductors
Inventor: CATTERMOLE KENNETH WILLIAM
IPC: H03K3/26
Filed: 1956-01-25
Abstract: 784,379. Transistor frequency dividing circuits. STANDARD TELEPHONES & CABLES, Ltd. Jan. 25, 1956, No. 2457/56. Addition to 726,496. Class 40 (6). In a circuit as described in the parent Specification, in which a regenerative feed-back 7, Fig. 4, is arranged between collector and emitter of a transistor 1, triggering timing pulses 9 are prevented from being effective due to a bias potential until a gating pulse is applied to the circuit, the resulting output pulses being fed to a pulse spacing feed-back network 15 from which a gating pulse is derived. In the quiescent condition of the circuit, diode 8 conducts and the pulses 9, Fig. 3 (not shown), are of insufficient amplitude to trigger the circuit until a negativegoing pulse appears on the base. In order to commence operation, a start pulse is fed over diode 16 to lower the base potential at the same time as the emitter potential is raised by a timing pulse 9 so that the circuit is triggered into its unstable state. Subsequent timing pulses are ineffective until one coincides with a gating pulse fed back from the pulse spacing feed-back network 15 which may comprise an open-circuited delay line, Fig. 5 (not shown). A short-circuited delay line may be employed, in which case the output pulse is fed down the line and returned as a positive going pulse which is again fed down the line and returned as a negative pulse to allow a timing pulse to retrigger the circuit. The output pulse may be reflected up and down the line many times before the circuit is in a state when it can be triggered by a timing pulse. Alternatively it can be arranged that the gating and timing pulses only coincide after a number of reflections down the line. The circuit may be stopped by a negative pulse applied to diode 17. The positions of the networks 7, 15 may be interchanged or both arranged in one position.
Patent GB-1494717-A (GB)
Title: Data modem
IPC: H04M11/06
Filed: 1976-01-22
Abstract: 1494717 Data modem INTERNATIONAL STANDARD ELECTRIC CORP 22 Jan 1976 [23 Jan 1975] 2474/76 Heading H4K In a data modem M having an answering tone generator E and an answering tone receiver R, discrimination between calling and called conditions, during manual operation, is determined by the presence or absence of an answering tone on a telephone line L during a predetermined time t1, which starts when the modem is connected to the line, the sequence of events being compatible with the sequence of events during automatic operation. When data terminal DT is ready to operate it indicates so by energizing terminal RI; the modem M is connected to the line L by contacts u of relay U which is operated and held so by gates OG1, AG1 on depression of a data button D on a data telephone DTS. Gate AG1 also sets bi-stable FF whose output 01 starts a timer T1 which runs for the time t1. If during t1 an answering tone is detected on line L by receiver R, FF is reset through AG2 indicating a calling condition and the terminal DT is informed on terminal St through gates OG2, AG3; the output of AG3 disconnects the input to R through gate OG3 operating switch S1. If at the end of tl no answering tone has been received by R, indicating a called condition, output 02 of FF enables timer T2 which produces an output for a time t2. During this time the tone generator E is connected to the data terminal through switch S2, and at the same time R is disconnected through OG2 and S1. At the end of t2 OG2 is enabled and DT is informed on terminal St through AG3. S1 remains disenabled during transmission of data. Data terminal DT transmits and receives from the line L through a signal converter SC.
Patent GB-987532-A (GB)
Title: Improvements in or relating to lift control systems
Inventor: ANDRE LEJEUNE
IPC: B66B1/16
Filed: 1963-01-21
Abstract: 987,532. Lift control systems. ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE CHARLEROI. Jan. 21, 1963 [Jan. 23, 1962], No. 2517/63. Heading B8L. A lift car 30 is provided with devices 10, 20 which detect the passage of the car past elements 12-14, 22-24, respectively, which are positioned in the shaft at locations at which means for stopping the ascending or descending car at the next floor must be actuated. Pulses produced in the detectors 10, 20 by the elements in the shaft are fed to two counters having output signals Z 11 , Z 12  and Z 21 , Z 22  respectively which are fed, together with signals N 5 , N 1  from travel limit elements 15, 21 to a device which produces three series of auxiliary signals H 1-4 , B 2-5 , N 2-4  characterizing respectively the presence of the car in the zones situated above the elements 21-24, below the elements 12-15, and between the elements 12 and 22, 13 arid 23, 14 and 24. Signals from the hoist motor corresponding to the direction of travel of the car are also fed into the auxiliary signal device, the output of which is fed to a call storage device, and a stop control device and a start control device for the hoist motor. The arrangement is such that a floor call is registered as long as not situated in the corresponding N zone and a stop signal is set up when there is coincidence between a stored floor call and a signal corresponding to the presence of the car in the N zone adjacent that floor. In a modification, Fig. 2 (not shown), to prevent premature braking of the car when it does not reach the manual operating speed during travel between two adjacent floors, two auxiliary series of elements are mounted in the shaft at positions corresponding to the braking points for an auxiliary operating speed which is relatively low and which will always be reached, and a pair of auxiliary detectors are mounted on the car. A discriminating device is provided for selecting the main high speed operation or the auxiliary low speed operation of the car. The travel limit signals produced when the car passes elements 15, 21 are employed also to check, and to rectify if necessary, the indications of the counters. The detectors 10, 20 may be situated in the winding room with the elements 12-15 and 21-24 secured to a cable or belt which moves with the car. French Specification 1,231,705 is referred to.
Patent GB-413034-A (GB)
Title: Improvements in or relating to electricity meters
IPC: G01R11/56
Filed: 1933-01-26
Abstract: 413,034. Supply meters. GLEN, J. B., 12, Park Avenue, North Shields, LIBBY, F. J., 50, Lodore Road, High West Jesmond, Newcastle-on-Tyne, and ASSOCIATED ELECTRICAL INDUSTRIES, Ltd., Crown House, Aldwych, London. Jan. 26, 1933, No. 2582. [Class 37.] Metering apparatus for a two-part tariff system comprises one or two meters with a single tapped winding or separate current windings, and a relay energized in the low rate circuit and making contacts to the metering field coil or coils so that low loads on the low rate circuit are charged at the high rate, the normal high rate registration being effected simultaneously with the normal low rate and with the extra low load on the low rate circuit. The relay may comprise a moving armature type instrument responsive to the load current, or a saturated current transformer, or a variable ratio transformer with tapping may be employed to feed the relay. In one arrangement, Fig. 2, the meter current coils 5, 5<a> in the different load circuits are connected so that when the arm 14 of relay 9 bridges contacts 18, 19, a resistance 20 is shunted across the coil 5<a >and normal registration on the low rate circuit 3, 8 occurs. A light load on the power circuit however removes the resistance shunt and high rate registration together with the normal high rate supply is effected.
Patent GB-1157438-A (GB)
Title: Electric Starting Circuits for Internal Combustion Engines
Inventor: CURZON THOMAS
IPC: F02N11/08
Filed: 1966-01-20
Abstract: 1,157,438. Starter control circuits for internal combustion engines. C.A.V. Ltd. 10 Jan., 1967 [20 Jan., 1966], No. 2628/66. Heading H2H. An internal combustion engine has a starting motor 12 and a starting aid 11 which is of the kind described in Specification 1,127,454, members 11, 12 being connected in parallel and simultaneously energized from a battery 10 by closure of an operator-controlled switch 13 to start the engine. Switch 13 may be solenoidoperated and have separate contacts for respectively controlling the motor, one or more starting aids and other apparatus.
Patent GB-959591-A (GB)
Title: Reel lock mechanism
IPC: A47H3/12
Filed: 1961-01-23
Abstract: 959,591. Reels. O. EVANS. (Aero-Motive Manufacturing Co.) Jan. 23, 1961, No. 2660/61. Heading B8M. A reel structure comprises a support 14, Fig. 2, a spring-loaded reel 12, arcuate wall means 11 co-operating with a lock element 13 which is movable through wall separations 66, 67, between first and second positions lying in first and second concentric paths, a stop 75 or 7C in the second path and means 98, 103, for moving the lock element between first, second and third positions in response to rotational movement of the reel. Unwinding cord 22, tightens rewinding spring 57, Fig. 1, and rotates reel 12 and wall means 11 secured thereto in a counterclockwise direction (in Fig. 2). The inner surface of wall 62 moves past cam follower 89 until the follower passes through wall separations 66 or 67 to a position outside wall 62. Release of tension on cord 22 allows reel 12 to rotate clockwise. If cam follower 89 is in engagement with the outside of wall 62, rotation less than 90 degrees causes it to engage with an edge 75 or 76. If cam follower 89 is engaged with cam edge 72 or 73 it can pass back through openings 66 or 67 to the non-operative first position, so that in this condition it must be pulled out slightly beyond its original position to engage the cam follower with edges 75 or 76. Engagement of the cam follower causes look element 13 to move into a position where pivot pin 86 is at the left hand end of slot 84 with toggle bar 93 in its broken line position against fixed stop 97, a spring 98 applying a counterclockwise torque to the element 13 which is resisted by the friction between the follower 89 and the edge 75 or 76. To release the reel lock, tension on cord 22 allows spring 98 to move lock element 13 into the Fig. 4 position and release of tension then causes a portion of wall 11 to engage roller 103 and pivot lock element 13 into the Fig. 2 position. The wall means and lock element may be mounted on either the reel or the housing.
Patent GB-592842-A (GB)
Title: Improvements in or relating to fuel control devices for internal internal combustionengines
IPC: F02D9/00
Filed: 1943-02-17
Abstract: 592,842. Fluid-pressure servomotors. UNITED AIRCRAFT CORPORATION. Feb. 17, 1943, No. 2682. Convention date, Nov. 3, 1939. [Class 135] [Also in Group XXVII] To control the fuel supply in accordance with the fuel pressure and air flow, a piston valve 50 is carried by a rod 48 supported by two diaphragms disposed in a casing 30, the upper diaphragm 44 being in contact with the fuel on both faces and having a pressure difference created between its faces by a restricted orifice 66 in a passage 86 connecting the fuel chambers above and below the diaphragm; upper and lower faces of the lower diaphragm 46 are connected respectively to the throat 28 of a venturi 24 in the main air inlet passage and mouth of the passage. The upper air compartment in the casing 30 is isolated from the lower fuel compartment by a partition 36 and an extensible bellows 94 which seals the aperture 98 in the partition through which passes the piston-rod 48. A similar bellows 96 in the lower air chamber 42 compensates for the bellows 94 and has its interior connected by a pipe 100 with the upper fuel chamber. A light spring 102 within the bellows 96 lifts the diaphragm to maintain,the fuel supply when the air pressure difference is too small to do so, as in idling. During idling, a needle valve 68 controls the orifice 66 in the fuel passage 86, being connected for this purpose to the throttle valve 18. The fuel flowing from the upper fuel chamber traverses a pipe 70 to a pump 72, the delivery from which is controlled by an arm 80 connected to an expansible capsule 76 having its interior in communication with the pipe 70 through a pipe 84. An altitude correction is applied by a needle valve 108 controlling a restricted orifice 106 in a passage 104 connecting the upper and lower air chambers, the valve being actuated by a barometric capsule 116 in the air inlet. In a modification, Fig. 2, the piston 50 is omitted, the interior of the bellows 96 is open to the atmosphere as also is that of a similar compensating bellows 126 on the upper face of the diaphragm 44, the capsule 76 is replaced by a piston 148 in a cylinder 146 connected at its end to a valve chamber 130 containing piston valves 138, 140 on an extension of the rod 128 carrying the diaphragms 44, 46. In this form a byepass 156 for the restricted orifice 66 provides additional fuel for full load working when a capsule 160 in a chamber 162 connected to the inlet manifold opens a valve 158 in the byepass.
Patent GB-1042899-A (GB)
Title: Fire resistant polyurethane compositions
IPC: C08G18/76
Filed: 1964-01-22
Abstract: A polyurethane resin comprises the reaction product of:  (I) An alkyd resin having an -OH number of 25-900 and which is the reaction product of one of the following mixtures (A) (i) an adduct of hexahalocyclopentadiene and a polycarboxylic compound containing aliphatic carbon to carbon unsaturation, and (ii) a polyhydric alcohol containing at least 3 -OH groups, (B) (i) an adduct of hexahalocyclopentadiene and a polyhydric alcohol containing aliphatic carbon to carbon unsaturation, (ii) a polyhydric alcohol containing at least 3 -OH groups and (iii) a polycarboxylic compound, (C) (i) an adduct of hexahalocyclopentadiene and a polyhydric alcohol containing aliphatic carbon to carbon unsaturation, and (ii) a polycarboxylic compound containing at least 3 -CO2H groups, the halogen in the hexahalocyclopentadiene being fluorine, chlorine, bromine or a mixture thereof; and (II) a polyarylpolyisocyanate containing an average at least 3 aromatic rings per molecule.  The polyarylpolyisocyanate may have the formula <FORM:1042899/C3/1> where R is hydrogen, chlorine, bromine, alkyl or alkoxy of 1.5 C, X is hydrogen, alkyl of 1-10C or phenyl and n has an average value of at least 1.  In Example (4) the reaction product of trimethylolpropane and 1,4,5,6,7,7-hexachlorobicyclo-(2,2,1)-5 heptene 2,3-dicarboxylic acid having an acid number of 25 was reacted with propylene oxide (about 4 moles) to give a product of OH number 366.  This oxypropylated product was mixed with an auxiliary polymeric material of OH number 270 and butyl acid phosphates.  CCl3F and polymethylene polyphenylpolyisocyanate were added and the mixture allowed to react to form a fire-resistant foam.
Patent GB-174940-A (GB)
Title: Improvements in or relating to leading-in wires for electric incandescent lamps or the like
IPC: H01K1/40
Filed: 1922-02-01
Abstract: 174,940. Lahr, H. Feb. 2, 1921, [Convention date Leading-in wires comprise a sheath b and a core a which are mechanically separate. Either or both of the opposing metal surfaces may be coated with a metallic oxide to prevent the parts from welding together. The core may be of nickel, nickle iron, or nickel steel, and the sheath of copper, gold, silver, or alloys thereof. Reference has been directed by the Comptroller to Specification 104,758.
Patent GB-377958-A (GB)
Title: Improvements in telephone repeaters
IPC: H04B1/58
Filed: 1931-01-30
Abstract: 377,958. Two-way transmission. KING'S PATENT AGENCY, Ltd., 146A, Queen Victoria Street, London.-(Lowe, J. P. ; 2600, Casilla, Lima, Peru.) Jan. 30, 1931, No. 3023. [Class 40 (iv).] A balanced transformer system for coupling a two-way line to the branches of a two-way repeater without requiring a balancing network comprises four pairs of primary and secondary windings a, as ; x, xs ; x<1>, x<1>s ; a<1>, a's ; of which the primaries are connected in series with one (x<1>) in reversed sense. The secondaries are connected to pairs of primary windings b, b<1> of balanced intermediate transformers having secondaries bs, b<1>s, connected in series to the repeater input transformer c, and bridged connections to the repeater output transformers e. The windings x, xs ; xl, x<1>s, may be wound on one core, and the remaining windings on a single second core or on two separate cores.
Patent GB-1455491-A (GB)
Title: Photoconductive toner for electrophotography
IPC: G03G9/08
Filed: 1974-01-23
Abstract: 1455491 Photo-conductive powder FUJI PHOTO FILM CO Ltd 23 Jan 1974 [26 Jan 1973] 03215/74 Heading G2C A photo-conductive powder used for forming powder images in electro-photography comprises (a) at least one core with at least the surface of the core being photo-conductive and (b) coated on the core, a layer of photo-conductive polymer or resin mixed with an organic photo-conductor or a sensitizer e.g. a Lewis acid, which layer has an extinction coefficient not exceeding 1300 mm<SP>-1</SP> at a wavelength to which photo-conductor in (a) is sensitive and which layer is capable of accepting charge carriers from (a). The core (a) may be completely photo-conductive or have an inert core coated with a photo-conductive layer. Specified inorganic photo-conductors are ZnO or CdS Se with X-form metal free phthalocyanine, or ZnO or CdS with Se, although ZnO, CdS, CdSSe, ZnS or CdSTe, Se, Te or Se alloy or the phthalocyanine may be used alone. The photo-conductor(s) may be admixed with a binder, e.g. alkyd or epoxy resins or thermosetting acrylic resins, and a sensitizer e.g. Eosin Y. The outer layer (b) is exemplified as (i) polyvinyl carbazole optionally mixed with 2, 4, 7-trinitro-9- fluorenone (TNF) or tetracyanoethylene, polyacenaphthene and TNF, (ii) an oxadiazole photoconductor and vinyl chloride/vinyl acetate copolymer, a tetraphenylpyrrole photo-conductor and a polyester or (iii) TNF and an epoxy or polyester resin and optionally kryptocyanine. The core to which the photo-conductor may be applied may be glass, TiO 2  plus polycarbonate ceramics, thermosetting resins or gaseous and may be treated an organo-silicon to improve adhesion of photoconductor. In layer (b), other resins (e.g. polycarbonates, phenol/formaldehyde resins, polystyrene and polysulphones) may be admixed with other Lewis acids or other organic photo-conductors (e.g. triphenylamine, aminocarbazole, mercaptobenzthiazole, diphenylimidazolidinone and phenyl naphthylidene oxazolone) and the materials of this layer are so chosen that they do not absorb in the same region as the inorganic photo-conductor. Layer (b) is preferably applied to the core (a) by spray drying or by adding powder of photo-conductor (a) to a solution of (b), adding a non-solvent for (b) to precipitate (b) and driving off solvent for (b).
Patent GB-827671-A (GB)
Title: Improvements in or relating to straight-bar knitting machines
IPC: D04B11/06
Filed: 1957-01-30
Abstract: 827,671. Knitting-machines. MONK (SUTTON IN ASHFIELD) Ltd., S. A., and MONK, B. A. April 28, 1958 [Jan. 30, 1957], No. 3220/57. Class 74 (2). The fashioning screws 1 and 2 of a straight-bar machine which respectively control the selvedge edge of the work and of a " V " neck, are provided with bluff plates 3, 4 to control the adjustment of the screw 1 for narrowing and widening respectively, and bluff plate 5 to control the adjustment of the screw 2 for narrowing. The bluff plates are connected by a series of levers to levers 18 (not shown), 19, and 20 (not shown), each of whose motions is controlled by a cam 28, which engage with truck 29, and stepped member 26, which engages withp in 35. Lever 23 supports lever 19 until fashioning is to take place. Depending on the position of member 26, which is controlled by the pattern drum or chain of the machine, lever 19 is held in an inoperative position or can move downwards to one of two positions, following the cam 28, which position it takes up determines whether no fashioning, or fashioning over one or two stitches, takes place.
Patent GB-347302-A (GB)
Title: Improvements in and connected with sound reproducing apparatus
IPC: G11B33/06
Filed: 1930-01-30
Abstract: 347,302. Cabinets. RAYNER, G. F., 5, Chancery Lane, London. Jan. 30, 1930, No. 3224. [Class 52 (i).] A portable wireless receiver 5 and a portable gramophone 18 are removably housed in a cabinet made up to resemble a bureau bookcase. The compartment 21 serves for gramophone records.
Patent GB-1477808-A (GB)
Title: Sulphonated dioxazine dyes their manufacture and use
IPC: C09B19/02
Filed: 1975-01-24
Abstract: 1477808 Sulphonated dioxazine dyes CIBA GEIGY AG 24 Jan 1975 [15 Feb 1974] 3245/75 Heading C4P Dioxazine dyes have the formula wherein X is Cl or Br, Z is H 1 Cl or Br and Ar is an arylene radical. The dyes are manufactured by sulphonation of Ar; oleum or core sulphuric acid may be used. The dyes give strong, brilliant, fluorescent shades, especially orange to red, on dyeing and printing diverse materials such as wool, silk, leather, particulary nylon, and also synthetic fibres from casein or polyurethanes.
Patent GB-712543-A (GB)
Title: Improvements in flat bed offset printing machines
IPC: B41F3/30
Filed: 1952-02-07
Abstract: 712,543. Printing machines. MAILANDER, O. Feb. 7, 1952 [Feb. 9, 1951], No. 3246/52. Class 100 (2) Inking and damping apparatus.-In a flat bed offset printing machine of the kind having a reciprocating carriage 2 carrying the offset cylinder 3, an inking device consisting of a distributing roller 4 and inking rollers 5, the inking rollers are supported on levers 9, 10 pivoted about the axis of the distributing roller which is supported in bearings fixed to the carriage. The carriage is mounted on rollers 7 running on rails 8. Racks 11 on each side of the bed mesh with gear wheels 12 which, in turn, mesh with further gear wheels (not shown) on the shaft 14 of the distributing roller which is thereby rotated during reciprocation of the carriage. The spindles of the inking rollers carry wheels 22 adapted to engage rails 23 to lift the inking rollers out of engagement with the bed over the printing station. The inking rollers are biased downwardly by springs 21 connected between the levers 9, 10 and the carriage 2. The inking refers 5 are inked at the end of the stroke of the carriage 2 by standing on supply rollers 16 mounted beyond the end of the bed and driven by gear wheels 17, the gear wheels 12 being out of engagement with the rack in this position. In order to facilitate re-engagement of the gear 12 with the rack when the carriage is moved back over the bed there is provided a pivoted toothed continuation 18 of the rack 11 which is downwardly yieldable against a spring 20. The part 18 yields under the teeth of the wheel and rises to mesh with the wheel, when the teeth are in correct register. A damping device may be arranged on the other side of the cylinder 3 in the same manner as the inking device and including a brass roller 4<SP>1</SP> and damping rollers 5'.