baber/WOPTO huggingface dataset:
Patent GB-1350708-A (GB)
Title: Power control circuit for use for example in a door lock
IPC: B60R25/10
Filed: 1972-03-22
Abstract: 1350708 Transistor switching circuits WAGNER ELECTRIC CORP 22 March 1972 [24 March 1971] 48915/72 Divided out of 1350705 Heading H3T A power control circuit VII for use in conjunction with the door looking arrangement described in the parent Specification 1,350,705, comprises an engine-starting switch S8 which may be operated within 30-40 seconds of the receipt of an impulse from a relay K1 in the vehicle door unlocking circuit. This delay is achieved by the charging of condenser C10 which then discharges through the base and emitter of transistor Q6 and in doing so, allows energization of a relay K3, lighting a lamp I2 and disabling an alarm circuit VIII. Operation of switch S8 energizes relay K5 and thus renders thyristor TH1 conductive by current derived from relay K3 (already closed by the current from the locking circuit) so that current passes through N.C. contact of switch S7 and the winding of relay K4 which feeds the vehicle ignition circuit and starting motor. The thyristor remains conducting when the switch S8 is returned to its normal state so that the relay is latched into its operated condition by current flowing directly from source T over the N.C. upper contact of the "stop" switch S7. Operating switch S7 breaks this circuit, de-energizes relay K4 and quenches thyristor TH1, and so stops the engine.
Patent GB-1453077-A (GB)
Title: Safety device to protect vehicles and their occupants from impact with roadside objects
IPC: E01F15/14
Filed: 1973-10-19
Abstract: 1453077 Energy absorbing crash barrier ACIERIES REUNIES DE BURBACH-EICHDUDELANGE SA ARBED 19 Oct 1973 [21 Oct 1972] 48953/73 Heading E1G In order to prevent excessive damage to a vehicle colliding with a fixed roadside object such as a bridge pier or (as shown) the end of a crash barrier rail 13, an array of fixed deformable upright bodies such as bendable metal or plastics tubes 15 is disposed in the likely path of a colliding vehicle so that the vehicle is decelerated as successive bodies are run over, each body having a peripheral portion below ground and the bodies being so constructed or arranged that they provide increasing resistance to the vehicle as it approaches the fixed object. The tubes 15 shown upstand from sockets having a common cover plate 20 overlying base concrete 22, being clustered closely around the barrier end 13 but becoming more sparse and of smaller height and diameter further away. Each tube 15 may be filled with foam plastics and may be plastics coated. The tubes in an array may be interconnected by deformable walls (30) of corrugated sheeting, Fig. 8 (not shown) and such an array may be enveloped by a casing (38). Figs. 9-11 (not shown) illustrate a barrier end (13) protected by an array of upright deformable bodies of trapezium or hexagon crosssection, optionally filled with foam plastics (16') and formed by one or more groundembedded walls of corrugated sheeting.
Patent GB-1282784-A (GB)
Title: Reciprocatory saw
Inventor: SISLER REMO
IPC: B28D1/06
Filed: 1969-10-06
Abstract: 1282784 Reciprocating saws R SISLER 6 Oct 1969 [4 Oct 1968 15 March 1969] 49032/69 Heading B5L A reciprocatory sawing machine comprises at least one cutting blade 35, Fig. 2, carried by a pair of heads T 1 , T 2 , a pair of supports 1, 2 on which the heads are guided for vertical movement, means for causing rapid downward or upward movement of the heads to carry the blade(s) to or from a cutting position, means to cause slow downward movement of the heads for cutting, means for causing reciprocating longitudinal movement of the blade(s), means for causing vertical movement of the blade(s) at the ends of each longitudinal movement in such a way that a uni-directional cutting movement of the blade(s) results, and means for interrupting the slow downward movement of the blade(s) if an area of unusual hardness is encountered in a material being cut until the area is passed through. In the machine described the heads T 1 , T 2  are moved vertically rapidly by screws 15, 16 driven from a motor 30, and the slow downward movement is produced from a motor 22<SP>1</SP> acting via a pawl and ratchet device 23, 26. Rapid or slow movement is selected by a hand operated lever. In one embodiment each head T 1  or T 2 , Figs. 5, 6, comprises an oil bath in which run a rack 32 connected to a cutting blade 35, and a rack 31 connected to a non-cutting blade 36 which with the other blade, the racks, and freely rotatable pinions 33 form a closed motion linkage. The blades are reciprocated from a motor 37, Fig. 2, by linkage including connecting rods 40. Instead of the racks and oil baths the heads T 1 , T 2  may each comprise a pair of cylinders the pistons of which are connected to the blades and are arranged to move under the control of a common fluid within the cylinders. The blades are lifted or lowered at the end of each longitudinal stroke by mechanism 49 and 50 included between the blades and the heads T 1 , T 2 . Each mechanism includes a pair of pivoted weighted shafts which move relative to the blades as these change direction and which are connected by linkage and bearings to the blades to lift or lower them. In an alternative construction the heads T 1 , T 2  are each in two parts, and the parts carrying the blades are raised or lowered at the end of each stroke by a cam arrangement. When the cutting blade encounters an area of hardness within a material being cut and its downward motion is prevented a device 70 operated by a cam carried by the blade causes a contact to be opened which breaks the circuit of the motor 22<SP>1</SP> and so interrupts the slow downward feed of the heads T 1 , T 2  until the obstruction is overcome. The machine may include a plurality of cutting blades mounted on each pair of heads, and/ or a plurality of pairs of heads. The blades may all be arranged in a common horizontal plane in which case they are all cutting blades.
Patent GB-1476748-A (GB)
Title: Production of poly-n-hydrocarbyliminoalanes
IPC: C08G79/00
Filed: 1974-11-14
Abstract: 1476748 Polyiminic hydrides containing aluminium SNAMPROGETTI SpA 14 Nov 1974 [29 Nov 1973] 49367/74 Heading C2C A compound having repeating units of formula where R is an aliphatic, cycloaliphatic or aromatic hydrocarbon radical, is made by reacting a primary amine of formula R.NH 2  with an alkali metal aluminium hydride in the presence of a hydrocarbon solvent.
Patent GB-1445363-A (GB)
Title: Variable impedance circuit
IPC: H03G1/00
Filed: 1973-10-24
Abstract: 1445363 Variable impedance circuits; gain control NIPPON VICTOR KK 24 Oct 1973 [31 Oct 1972 (2) 28 Dec 1972] 49411/73 Heading H4R A variable impedance circuit, particularly for gain control, includes a common-emitter transistor 20 whose base receives current only through a resistor 23 connected between the collector and emitter and from an impedance control voltage source 22 through a diode 21 whose polarity is opposite that of the baseemitter junction of the transistor. In modifications (Figs. 7, 9, 10, not shown) the emitter is grounded through a resistor, optionally with a by-pass capacitor, and a further capacitor grounds the diode. The circuit may shunt the emitter resistor of an amplifier transistor. The transistor and diode are of the same materials. It is shown mathematically that output current varies linearly with output voltage.
Patent GB-1221130-A (GB)
Title: Improvements in motor-operated hedge clippers
Inventor: SCHNIZLER ALBRECHT
IPC: A01G3/053
Filed: 1969-10-08
Abstract: 1,221,130. Hedge cutters. METABOWERKE K.G. CLOSS, RAUCH & SCHNIZLER. 8 Oct., 1969 [2 Nov., 1968], No. 49453/69. Heading A1E. A hedge cutter comprises two handles, one handle 4 having a spring-loaded on-off switch 28 which is manually held in the "on" position and an electric motor 3 drive the cutter through gearing in which is incorporated a spring-loaded clutch which is automatically disengaged and is engageable by the hand grasping the second handle 7. The motor 3 drives a pinion shaft 11 which engages a drive gear 10 on the bottom of which are dog clutches 15 and around which is an annular groove 19 into which there engages a sheet metal shift fork 17 which is mounted on a spindle 18, Fig. 3. The or each cutter blade is reciprocated by an eccentric 6 into which are mounted clutch dog bolts 16 to complement the clutch dogs 15. A spring 25 urges the shift fork 17 inwardly to disengage the clutch and engagement is effected by means of the lever 23 which is pivoted by rotation of the handle 7 in direction 30 as shown or, as in a second embodiment, by rotation of a shift handle until it abuts the handle 7.
Patent GB-1383980-A (GB)
Title: Photographic printing apparatus
IPC: G03B27/52
Filed: 1972-10-26
Abstract: 1383980 Projection printing KOMBINAT ROBOTRON VEB 26 Oct 1972 49510/72 Heading G2A A plurality of images appearing sequentially on a screen 1 are transferred to successive positions on a microfilm frame 7 by means of an optical system 2 movable both horizontally and vertically (the screen being maintained stationary) or in one direction only (the screen being movable in the other direction). Movement of the optical system, which may be continuous or stepwise, may be effected mechanically, electro-mechanically or hydraulically.
Patent GB-1400515-A (GB)
Title: N-path filters
IPC: H03H19/00
Filed: 1972-10-27
Abstract: 1400515 Measuring parameters of four-pole networks WAYNE KERR CO Ltd 16 Jan 1974 [27 Oct 1972] 49710/72 Heading G1U [Also in Division H3] A system for measuring the phase characteristic of a network 31 comprises: an N-path filter 36, (described with reference to Fig. 1 (not shown), see Division H3); a variable frequency waveform generator 32 for providing a sinusoidal test signal 30 to the network and control signals 18 ... 21 for the input switching means of the filter 36; means for coupling the direct and inverted outputs of network 31 to the inputs terminals of the filter 36; means 41, 42, 45 for controlling the output commutator at a predetermined frequency; a filter 46 for obtaining the fundamental of this predetermined frequency from the output of filter 36; and means for obtaining and displaying the phase difference between the output of filter 36 and a notional reference phase. If the input switching of one channel is arranged to be inphase with the test signal, then the phase difference indicated may be arranged to be equal to that introduced by the network under test as the frequency of the test signal. The phase difference may be measured by a counter 48 started at predetermined point on the commutating signal and stopped at a predetermined point on the output signal from filter 46, the count at this instant being fed to a digital display. The circuit may also include means 49 for indicating the ratio of the amplitude of the network output to its input. The two indications together then give the amplitude and phase angle of the transfer characteristic of the network 31. If, as described, the N-path filter has four channels and means are provided for shorting together a selected pair of oppositely phased channel outputs, then this amplitude indication will represent the amplitude of either the in-phase or quadature component of the transfer characteristic of the network 31.
Patent GB-1490456-A (GB)
Title: Method of and means for transferring articles
IPC: B21D51/26
Filed: 1975-12-05
Abstract: 1490456 Workpiece transferring; stamping J U KNUBEL-KIMBELL 5 Dec 1975 [22 Sept 1975] 50050/75 Headings B3B and B3Q Workpieces, e.g. metal cans C, are transferred between work stations 1a-1d by means of jets of liquid or jets of gas/liquid from nozzles 6a-6d which push the cans along guides. As shown the cans are pushed along curved guides 12 interconnecting the work stations at which tools, e.g. a press and die, act vertically. In the case where the tools act horizontally, the stations are connected by upwardly arcuate guides against which the cans are urged by the jets. The jets may be controlled by valves or baffles and may be pivotally mounted. Intermediate stations may be provided. At the work stations the cans are located against members 8a-8d by jets from nozzles 10a-10d. The liquid maybe the coolant or lubricant used in the work process.
Patent GB-1488048-A (GB)
Title: Electronic enhancement of optical tachometers
IPC: G01P3/48
Filed: 1974-11-25
Abstract: 1488048 Pulse shaper and frequency doubler for an optical tachometer BURROUGHS CORP 25 Nov 1974 [26 Dec 1973] 50930/74 Heading G1A [Also in Division H3] A system for producing shaped pulses 76 from an alternating signal 4 from an optical tachometer comprises a differential amplifier with its inputs coupled to the tachometer by a signal-carrying line and a non signal-carrying line and its output via a low-pass filter and buffer amplifier to an artificial delay line, the signal 36 from which is subtracted from the undelayed signal 30, to give a resultant 40, of which the zero values 52 of the instantaneous magnitude coincide with the peaks 51 of signal 30, a 'squarer' making a signal transition each time signal 40 passes a threshold point 52 provided the sign of the slope is opposite to that at the previous point 52, a pair of parallel pulse generators which supply trigger pulses 66, 68 on positive and negative peaks 62, 64 respectively to an OR gate, which thereby gives out signal 76 of double the frequency. A method of doing this and a device for measuring the speed of a shaft comprising the above apparatus are also claimed. The delay device has a chosen set characteristic impedance, to which the phase delay is proportional, delaying signal 30 by a fixed value between 0 degrees and 180 degrees, preferably 45 degrees. The pulse generators may be single shot multi-vibrators. The pulse generator for the negative peak may comprise an inverter and a pulse generator responding to positive peaks.
Patent GB-1067090-A (GB)
Title: Selectively actuated power driven instrumentality for a typewriter or like business machine
Filed: 1964-12-15
Abstract: 1,067,090. Typewriters. SPERRY RAND CORPORATION. Dec. 15, 1964 [Dec. 26, 1963], No. 51079/64. Heading B6F. Actions using auxiliary power.-In a power action for a typewriter or the like, an eccentric 68 pivotally mounted on an actuator arm 58, is normally prevented from engaging with a continuously rotating power roller 28 by an acetal resin latch 82 which is biased into coaction with by a spring 94 but is released by a key-action. On depression of a key, a lever 144 pivots rocker arm 130 about cross-rod 132 and a trip link 126 is raised. A shoulder 124 on the link 126 engages an ear 122 on a latch actuator ,96, the top of which is formed with a tooth 104. This contacts a heel 106 of the latch 82, whereupon it pivots to release the eccentric 68. Concurrently the actuator pivots a trigger 112 which pushes the power cam into contact with the power roller. Repeat operation is prevented by the construction of the trip lever. Repeat operation can, however, be effected by other constructions of the trip-lever 126.
Patent GB-992838-A (GB)
Title: Process for the hydrogenative cracking of hydrocarbon oils
IPC: C10G65/12
Filed: 1963-12-30
Abstract: The hydrogenative cracking of a hydrocarbon oil is effected in the presence of a catalyst which comprises fluorine and at least one of the metals Cr, Mo, W in intimate association with a support composed of 50-90% by weight silica and 50-10% by weight of one or more of alumina, magnesia, zirconia and boria, and is prepared by reaction of at least one soluble compound of the metal(s) with the support, and incorporation of fluorine into the support, while the latter is in the form of a hydrogel. "Hydrogel" as used herein means a gel from which only loosely adsorbed water has been removed and is distinguished from a xerogel in this respect. Suitable catalyst supports are SiO2-MgO2; SiO2-Al2O3-ZrO2; and SiO2-Al2O3-B2O3; a preferred support contains at least 70% SiO2, not more than 30% Al2O3 by weight.  The preferred weight of Group VIb metal, particularly Mo, W, in the catalyst lies between 0.1% and 20%; fluorine is incorporated into the hydrogel, preferably in an amount of 0.1% to 5% by weight, by means of hydrofluoric acid or a water soluble, e.g. Na, NH4, fluoride. The hydrocarbon oil feed is a distillate preferably boiling in the range 230-510 DEG  C., for example the distillate obtained after vacuum distilling a petroleum residue and subjecting it to mild thermal cracking. The oil feed may be subjected to a mild pretreatment e.g. catalytic hydrogenation with Co or Ni and Mo on Al2O3 to reduce the nitrogen content to less than 75 p.p.m. by weight. The main cracking is effected at 260-455 DEG  C. under a total pressure of 70-210 atm. gauge and a hydrogen partial pressure of 35-210 atm. gauge and at a L.H.S.V. of 0.2 to 10 and a hydrogen-to-oil mol. ratio of 5: 1 to 50: 1, the feed may be in the liquid, vapour or mixed phase and includes fresh and recycle hydrocarbon while the hydrogenating gas preferably contains 70-90% hydrogen. Regeneration of the catalyst may be effected with air or other oxygen-containing gas at not more than 650 DEG  C.  An example describes the preparation and use of (a) a silica-alumina support containing fluorine and tungsten, and (b) a silica-alumina support containing fluorine and molybdenum.
Patent GB-1125559-A (GB)
Title: Novel urea derivatives and their production
IPC: C07D493/08
Filed: 1966-11-17
Abstract: 1,125,559. Urea and thiourea derivatives; adamantanes. J. R. GEIGY A.G. 17 Nov., 1966 [18 Nov., 1965], No. 51522/66. Heading C2C. Novel compounds of Formula I wherein X represents a methylene, ethylene' imino or C 1-2  alkylimino or alkanoylimino group, or oxygen, Y represents oxygen or sulphur, R 1 , R 2  and R5 represent hydrogen or a C 1-4  alkyl group, R 3  and R 4  represent hydrogen, halogen up to the atomic number 35, trifluoromethyl, or C 1-4  low alkyl or alkoxy or C 1-2  alkanoyl groups, and n represents 0 or 1, are prepared (1) by reacting an amine of Formula II wherein X<SP>1</SP> has the meaning given for X above with the exception of the imino group, with a suitable phenyl isocyanate or isothiocyanate or with a reactive functional derivative of a suitable carbanilic acid or thiocarbanilic acid, and, if desired, splitting off any low alkanoyl radical in X<SP>1</SP> by hydrolysis, (2) by reacting an isocyanate or isothiocyanate of Formula VI or a reactive functional derivative of a carbamic acid or thiocarbamic acid of Formula VII with a suitable aniline, and, if desired, splitting off any low alkanoyl radical in X<SP>1</SP> by hydrolysis, (3) by reacting a compound of Formula VIII with a compound of formula H 2 Y, and, if desired, splitting off any low alkanoyl radical in X<SP>1</SP> by hydrolysis, or (4) by converting a thiourea obtained as described above into the corresponding urea. 2-Oxa - adamantane - 1 - amine may be prepared by reacting bicyclo[3,3,1]nonan-3,7-dione with benzylamine, reducing the 3-benzylamino- 2 - oxaadamantan - 1 - ol obtained with lithium aluminium hydride, and debenzylating the N - benzyl - 2 - oxaadamantane - 1 - amine thus formed. 1 - (1 - Adamantyl) - 3 - (3,4 - dichlorophenyl)- carbodiimide may be obtained by treating 1-(1- adamantyl) - 3 - (3,4 - dichlorophenyl) - thiourea with anhydrous magnesium sulphate and lead oxide. Therapeutic compositions having anti-bacterial activity, which may be administered locally, parenterally or orally, contain as active ingredient a compound of Formula I above.
Patent GB-1170099-A (GB)
Title: A Transistor Amplifier
IPC: H03F1/48
Filed: 1966-11-17
Abstract: 1,170,099. Transistor amplifiers. SOC. ITALIANA TELECOMMUNICAZIONI SIEMENS S.p.A. 17 Nov., 1966 [11 Feb., 1966], No. 51587/66. Heading H3T. In a transistor amplifier having a coupling network positioned between two transistor stages 1, 2, a transformer T having bifilar windings on a toroidal ferrite core couples a parallel tuned circuit L 1 , C L , C, to a series tuned circuit L 2 , C 2  and provides the current gain of the first stage 1 to the second stage 2. As shown, the transistors 1 and 2 are connected as common base amplifiers. The parallel tuned circuit consists of the coil L 1 , the output capacitance C, of the transistor 1 and the distributed capacitance C L  of the winding L 1 . The series resonant circuit comprises the coil L 2 , the wiring inductance, the input inductance of the capacitor C 2  and the transistor 2 and damping resistance N 3 , R 2  which is shown transferred to the primary of the transformer T. The transformer T may be an autotransformer. The coupling network which is not affected by temperature as much as the active elements of the amplifier enables the amplifier to have a wide frequency range at a constant gain (curve " a," Fig. 3, not shown) which is stable with regard to temperature variations.
Patent GB-1326607-A (GB)
Title: Method for controlling a mill with high throughput in particular a tube mill
IPC: B02C25/00
Filed: 1970-11-05
Abstract: 1326607 Tube mills WEDAG WESTFALIA DINNENDAHL GROPPEL AG 5 Nov 1970 [5 Nov 1969] 52632/70 Heading B2A A mill, particularly a tube mill 1, is controlled by a system comprising a smaller similar mill 7 upstream in which the data for controlling the main mill are determined. Material from bunkers is metered at 5 and a sample crushed at 8 screened at 9 and fed via a hopper 15 to the mill 7. This in turn supplies a separator 11. Coarse material is weighed on a weighbelt 13, 14 and recycled. Product is composed with that from a main separator 3 and weighbelt 4 in a tester 17, whose output signals control a computer (not shown) which in turn controls the mill 1. Data used may be: amount of charge, amount recirculated, amount of ground material, grain sizes, temperature, millability, water injection, Blain value.
Patent GB-1293667-A (GB)
Title: Vinylidene fluoride polymer compositions
Inventor: DUKERT ANDREW ANTHONY
IPC: C08L27/16
Filed: 1970-11-05
Abstract: 1293667 Vinylidene fluoride polymer compositions PENNWALT CORP 5 Nov 1970 [6 Nov 1969] 52726/70 Heading C3P [Also in Division B2] A vinylidene fluoride homopolymer or copolymer containing at least 75% by weight of polymerized vinylidene fluoride units is intimately mixed with 0À05-5% by weight, based on the weight of the mixture, of polyethylene to form a homogenous physical mixture. Preferably a homopolymer is used, and the mixture desirably contains 0À5-3% polyethylene, preferably a low density polyethylene, e.g. of melt index 40-30 g. per 10 minutes. The mixtures have improved moulding properties.
Patent GB-1045370-A (GB)
Title: Centrifugal distributor for fertilizers and other materials in powder or granules
Inventor: PAVEL BABICIU
IPC: A01C17/00
Filed: 1964-12-31
Abstract: 1,045,370. Centrifugal distributers. MINISTER OF THE MINISTERUL INDUSTRIEI CONSTRUCTIILOR DE MASINI. Dec. 31, 1964, No. 53061/64. Heading A1D. A centrifugal distributor comprises a hopper 2 pivotally mounted on a frame 1 and arranged to be vibrated by a cam and connecting rod means 6, 7 connected to the shaft of the spinner. Material is fed from the hopper through a metering head 8 in which a disc, which is adjusted by means of a lever 9, is provided with slots which co-operate with slots in a fixed plate. A rotatably adjustable funnel 12 directs the material to a spinner which may comprise three superimposed discs of successively smaller diameter forming a single body and each provided with blades or alternatively the spinner may comprise a number of inclined paddles on each of which are fastened a number of blades of different length.