baber/WOPTO huggingface dataset:
Patent GB-833474-A (GB)
Title: Piperazine derivatives
IPC: C07D417/06
Filed: 1957-12-13
Abstract: The invention comprises compounds of the general formula <FORM:0833474/IV (b)/1> and their pharmaceutically acceptable acid addition salts, and the preparation thereof by condensing a compound of the general formula <FORM:0833474/IV (b)/2> with a piperazine of the formula <FORM:0833474/IV (b)/3> wherein n is 1 or 2, R1 is a hydrogen atom or a lower alkyl group or the residue of a lower aliphatic carboxylic acid (the term "lower" indicating not more than 6 carbon atoms in the group so described) and of P and Q one is hydrogen and the other is a group CH2CH2CH2X or CH2CH2COX, X being a reactive electronegative atom or radical, such as a p  halogen atom or an aryl sulphonic ester radical, and if necessary reducing CH2CH2CO to propylene.  The reaction is preferably carried out in the presence of a basic condensing agent.  In an example, 2-trifluoromethylphenothiazine is condensed with 1-chloro-3-bromopropane in the presence of sodium amide and liquid ammonia, to form 10-(3-chloropropyl)-2-trifluoromethylphenothiazine which is heated with 1-(2hydroxyethyl)-piperazine to give 1-(2-hydroxyethyl) - 4 - [3 - (2 - trifluoromethyl - 10 - phenothiazyl)-propyl]-piperazine.  Similarly, but using 1 - (3 - hydroxypropyl) - piperazine the corresponding propyl analogue is obtained.  In further examples the 1-(2-hydroxyethyl) derivative is reacted with phenyl chlorocarbonate to give the corresponding phenyl carbonate ester and this in turn with ammonia yields the carbamate of 1-(2-hydroxyethyl)-4-[3-(2trifluoromethyl - 10 - phenothiazyl) - propyl]piperazine; with dimethylcarbamyl chloride to give the dimethylcarbamate ester; with ethyl chlorocarbonate to give the ethyl carbonate ester (both with the 1-(2-hydroxy)ethyl) and 1-(3-hydroxypropyl) derivatives); and with acetic or propionic anhydrides to give the acetate or propionate esters.  Condensing 10gives 1 - (2 - ethoxyethyl) - 4 - [3 - 2 - trifluoromethyl - 10 - phenothiazyl) - propyl] - piperazine. The dihydrochlorides and dimaleates of the esters above are also described.
Patent GB-1275911-A (GB)
Title: Improvements in hydraulic pump drive assemblies
Inventor: GURWICZ DAVID
IPC: H02P7/298
Filed: 1968-08-14
Abstract: 1275911 Control of D.C. motors SEVCON ENG Ltd and RANSOMES SIMS & JEFFERIES Ltd 14 Aug 1969 [14 Aug 1968] 38916/68 Heading H2J Thyristor 6 conducts to energize the field windings 5 of a motor 1, capacitor 8 being charged through resistor 9 so that capacitor 24 is charged and then discharged through unijunction transistor 22. A gating pulse is then applied to thyristor 7 which conducts to discharge capacitor 8, thereby commutating thyristor 6. Capacitor 18 charges, and, after a period determined by resistors 19, 20 is discharged through unijunction transistor 13 which refires the thyristor 6. The thyristor 7 turns-off the thyristor 6 after a period dependent upon the values of resistors 25, 26, and capacitor 24. Adjustment of resistor 19 determines the frequency of the pulses supplied to the field winding, the variable resistor being coupled to a hand lever which first closes contact 4 and then increases the speed of the motor. If the armature current exceeds a preset value determined by resistors 2, 5a, transistors 28 and 29 tend to turn-off and turn-on respectively. The rate of charge of capacitor 18 thus increases to increase the frequency of firing pulses for the thyristor 6 whereby the mean field current rises in value. When the voltage of battery 3 falls, transistor 28 tends to turn-off so that the mean field current is maintained. In other arrangements, the thyristor 6 is gated at fixed intervals whilst thyristor 7 is controlled to determine the mean field current, or the timing of both thyristors may be adjustable. A resistor 2a is associated with relay 5b and is inserted into the armature circuit if there is a loss of field excitation. The motor 1 drives an hydraulic pump providing auxiliary services on a fork lift truck having a series traction motor.
Patent GB-941606-A (GB)
Title: Methods and apparatus for producing a continuous tobacco rod
IPC: A24C5/18
Filed: 1959-11-18
Abstract: 941,606. Cigarette-making machines. K. KÍRBER. Nov. 18, 1959 [Nov. 21, 1958], No. 39080/59. Heading A2C. A tobacco stream 5 on a conveyer 3 is separated into two coherent streams one of which passes round a suction wheel 13 to a cigarette rod-former 21 and the other of which is recirculated by the conveyer 3 and a conveyer 12 to form with showered tobacco from a distributer 4 the stream 5. A comb-off roller 20 rejects surplus tobacco on the wheel 13, which has a peripheral conveying channel 16 formed by side walls spaced apart by an air-permeable base wall 15 through which and through ducts defined by radial partitions 19 suction and compressed air are respectively supplied from chambers 18S, 18C. The compressed air transfers the tobacco to the rod-former 21, assisted by a presser belt 25 and a bridge 26, and cleans the channel 16. The roller 20 may be replaced by a horizontal disc cutter arranged tangentially to the wheel 3 at its lowest point, where stream compaction can be effected by adjustment of the spacing of a roller 2 from the wheel 13 or by increased suction in the chamber 18S, which increase, or increase of suction in a further chamber at this point, may be intermittent to provide densified tobacco sections for cigarettes compacted at one or both ends. Alternatively, the channel 16 may be enlarged at points corresponding to cigarette ends. A tobaccocompressing roller or shoe may engage in the channel 16 with radial adjustment, as may on additional comb-off roller or brush. In a modification, the lower run of the conveyer 3 is taken upwards away from the belt 12 sufficiently to allow room for the outlet of a laterally angled distributer replacing the distributer 4. Specification 941,607 is referred to.
Patent GB-1116146-A (GB)
Title: A method of limiting the bandwidth required for transmission of radar information
IPC: G01S7/00
Filed: 1965-09-14
Abstract: 1,116,146. Transmission of radar information. INTERNATIONAL STANDARD ELECTRIC CORPORATION. 14 Sept., 1965 [16 Sept., 1964], No. 39142/65. Heading H4D. In the transmission to a remote location of bearing and range information of a plurality of successive radar echoes in binary code form, the bearing information is the difference between the bearing of the echo in question and that of the previous echo, the number of bits in the bearing information binary code being the minimum necessary to express said information, such that the necessary transmission capacity band-width of the transmission medium per echo decreases with increased echo density, and the total necessary band-width increases only slowly with increasing echo density. For each echo, the range information may be transmitted with a 10-bit binary code, the higher order bits being transmitted even though their value may be zero. With the bearing difference information ## ranging up to 360 degrees, 12 bits are available for use, but only those which are necessary are transmitted. With a maximum range of R 1  the range resolution is R . 2<SP>-10</SP>, and the bearing resolution is 360 degrees . 2<SP>-12</SP>. The number of bits necessary in the bearing information transmission is given by [log 2  ##/360. 2<SP>12</SP>], rounded off to the next lower number. Thus for any one echo, the total number of bits B transmitted is A plot of equation (1) against echoes per degree = 1/##, is given in Fig. 1, and it is seen that the number of bits per message B, and therefore the required transmission bandwidth per echo decreases with increasing echo density. With an antenna rotation period of 10 seconds, the information bits per second transmission rate is given by B/##.36, and a plot of this is given in Fig. 2, the dotted line showing the situation without the reduction in B. It is seen that the required total transmission bandwidth increases only slowly with increasing echo density. Instead of ## having to range from 0 to 360 degrees, necessitating a possibility of 12 bits in the binary bearing transmission, the 360 degrees may be divided up into 16 sectors of 22¢ degrees each, such that, using the same bearing resolution of 360.2<SP>-12</SP>, a maximum of 8 bits will only be necessary. To enable a receiver to determine which sector is concerned, a reference bearing signal is transmitted each time the antenna starts to sweep a sector. For the first echo occurring after a reference bearing the bearing differences is the difference between the reference bearing and the bearing of the echo. As soon as ## becomes small enough to be represented by 4 bits, i.e. less than 360.2<SP>-12</SP>.2<SP>4</SP>, the number of bits in the bearing transmission changes from 8 to 4. A similar change may occur when ## becomes small enough to be represented 2 bits. These changes are shown in Fig. 3.
Patent GB-864996-A (GB)
Title: Improvements relating to telephone handsets
Inventor: BROWN RONALD ERNEST CHARLES
IPC: H04M1/03
Filed: 1958-12-04
Abstract: 864,996. Handsets. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Nov. 25, 1959 [Dec. 4, 1958], No. 39188/58. Class 40 (4). A terminal strip lies inside and round the wall of the transmitter or receiver housing of a handset and springs outwardly to hold itself in position. As shown in Fig. 4, the strip 17 is made of an insulator such as polythene, the ends having raised portions 32 which, when the strip is bent round to lie in the transmitter housing of Figs. 1 and 3, lie behind projections 33. The cut-back portions 34 of the strip coincide with the hollow handle of the handset casing 9 and give free-way for a cable. The strip may be formed to be initially arcuate in shape or may be bent from the straight form shown in Fig. 4. A switch 14 is described which forms the subjectmatter of Specification 864,995. Specification 839,899 also is referred to.
Patent GB-948103-A (GB)
Title: A vortex separator
IPC: B04C9/00
Filed: 1961-11-02
Abstract: 948,103. Centrifugal separators. SIEMENSSCHUCKERTWERKE A.G. Nov. 2, 1961 [Nov. 2, 1960 (3)], No. 39341/61. Heading B2P. A separator for removing dust and liquid particles from crude gas comprises a chamber 1, a substantially coaxial, smaller diameter inlet tube 2 for the crude gas, an outlet 14 for the cleaned gas opposite the tube 2 and a group 5, 6 or 7 of nozzles each having a rectangular opening into the chamber for injecting an auxiliary gas stream so as to create a flow thereof in an annular region adjacent the inner surface of the chamber, the flow having an angular velocity component and an axial velocity component which latter component is opposite to the direction of flow of the crude gas. The movement of the auxiliary gas down the chamber 1 causes rotation of the flow of crude gas in the manner described in Specification 933,224 whereby the dust and liquid particles are separated and conveyed into a space 12 from which they are discharged through a duct 13. A tear-shaped body 4 is disposed in the path of the crude gas at the flared mouth 3 of the tube 2. A similar body 9 having a recess 10 in its lower surface is disposed in the outlet 14 to prevent entrainment of particles axially of the chamber. A constriction 8 to deflect any upward stream of auxiliary gas downwards and to stabilize the flow in the chamber 1 is provided at the outlet and is preferably streamlined in the form of a plane, an inclined ring, a diaphragm or a ring having an aerofoil section. The auxiliary gas stream is fed to each nozzle group by way of a box structure surrounding each group which may be situated, as shown, in a plane at right angles to the chamber axis. Alternatively, the nozzle groups may be arranged on one or more helical paths. The nozzles are obliquely and tangentially inclined to the chamber wall and may be provided with internal rough surfaces to generate turbulence.
Patent GB-1200301-A (GB)
Title: Sandwich structures
Inventor: WARREN CHARLES KENNETH
IPC: B29C70/00
Filed: 1966-09-02
Abstract: 1,200,301. Layered panels. JOHN LAING RESEARCH & DEVELOPMENT Ltd. 1 Sept., 1967 [2 Sept., 1966], No. 39410/66. Headings B5A and B5N. A sandwich structure having a core 1 which includes a mixture of a resin and a particulate filler in the form of sand particles optionally admixed with chalk powder or silica flour, positioned between two outer layers 2 and 3, each of a material different from that of the core, may be made by coating the face of a mould with a polyester resin which is allowed partially to cure, placing in the mould a facing layer of material different from that of the core, e.g. of resinbonded glass fibre, spreading over the facing layer the core material of admixed sand and resin, e.g. a polyester resin, placing a second facing layer, e.g. of glass fibre and polyester resin on to the core material and curing the resultant structure. In an alternative process, the core layer may be moulded prior to the application of the outer layers.
Patent GB-1011789-A (GB)
Title: Improved apparatus for loading and unloading vehicles and other objects on and from a transporting vehicle
IPC: B60P1/43
Filed: 1964-09-28
Abstract: 1,011,789. Vehicles with bodies which form loading ramps. W. J. SCOTT MOTORS Ltd. Sept. 28, 1964 [Sept. 26, 1963], No. 39437/64. Heading B8E. To load a vehicle or other large article on to a lorry 1, Fig. 1, a jib 14 is lowered from the position shown to a horizontal position by hydraulic rams 16, and a deck 3 is moved rearwardly by an hydraulic ram 11 and a cable and pulley system to the position shown in Fig. 5. The jib 14 is next lowered until the deck 3 is in the position shown in Fig. 4. A vehicle 8 can now be drawn on to the deck by a winch 9, Fig. 1, and cable 10. Subsequently the deck is raised by the jib 14 and rams 16 and drawn forwards again by the ram 11. Channel guides 7 on the deck engage rollers 18 on the jib. Hinged ramp plates 37 are provided. A pump driven by the engine of the lorry provides fluid under pressure, and the rams are controlled by duplicated levers at the front and rear of the lorry. Vehicles may be lifted by the winch 9, in which case the cable 10 passes over a swivelling pulley 34 on the jib 14, or between rollers 35, 36, Fig. 2a, mounted between the two arms of the jib.
Patent GB-1401989-A (GB)
Title: Alumina
IPC: C01F7/36
Filed: 1972-08-24
Abstract: 1401989 Alumina from the isopropoxide CENTRE DE LYOPHILISATION PHARMACEUTIQUE LYOCENTRE and CENTRE EUROPEEN DE RECHERCHES MAUVERNAY 24 Aug 1972 [20 Sept 1971] 39503/72 Heading C1A [Also in Division A5] Alumina having an empirical formula Al 4 O 9 H 6  (disregarding adsorbed water) is produced by subjecting aluminium isopropoxide to hydrolysis under reflux with a water-isopropanol mixture, there being 2À25 moles of water per mole of isopropoxide, and separating the product after concentration by distillation of excess isopropanol.
Patent GB-1439621-A (GB)
Title: Electronix phase failure detector device
IPC: H02H3/13
Filed: 1973-08-15
Abstract: 1439621 Protective arrangements MYSORE ELECTRICAL INDUSTRIES Ltd 15 Aug 1973 39554/73 Heading H2K A phase failure detector, e.g. for a motor, comprises current transformers f1 ... f3 with their secondary windings connected to identical units, each unit comprising a rectifier nl, a capacitor c1 and a transistor T1, the emittercollector junctions of the transistors T1 ... T3 being connected in series to control the energization of an electromagnetic relay dl. Under normal conditions, each transistor is rendered conductive by the voltage across the associated capactior c1 ... c3, so that the sum of those voltages causes sufficient current to flow in the series circuit comprising the transistors, the capacitors and a relay dl to maintain the relay energized. Should a phase fail, the cessation of the current through a current transformer renders the associated transistor non-conductive so that the relay is de-energized, e.g. to open contacts in the control circuit of a motor starter, Fig. 2 (not shown).
Patent GB-978900-A (GB)
Title: Improvements in electromagnetic flowmeters
IPC: G01F1/58
Filed: 1961-11-06
Abstract: 978,900. Induction flow meters. KABUSHIKI KAISHA HOKUSHIN DENKI SEISAKUSHO. Nov. 6, 1961 [Nov. 7, 1960(2)], No. 39647/61. Heading G1N. In an electromagnetic flow meter the magnetising windings on either side of the diametral plane through the measuring electrodes, each comprise a set of separately wound coils 5, 6 Fig. 1 which are symmetrically and similarly arranged on the two semi-cylindrical surfaces of the flow pipe 1 and the number of turns in each coil is a cosine function of the angle, of the position of the straigh portions of the coil relative to the diametral plane. The flowing fluid is screened electrostatically by a plurality of thin metallic rings 4 of stainless steel separated by insulating material and earthed through a common conducting strip. A laminated core 7 is provided around the outside of the coils and separator plates 14, Fig. 2, between them. Leads 13 from the electrodes which are domes protruding from the inner surface of the pipe are led to a terminal box 12 via a groove in the outer surface of the pipe. The coils are A.C. energized and the arrangement is said to produce a homogenous field requiring less energizing current than heretofore. The thickness of the laminated magnetic core is at least one millimetre.
Patent GB-1019904-A (GB)
Title: Improvements in or relating to shelving
IPC: A47B96/02
Filed: 1962-10-23
Abstract: 1.019,904. Label holders. R. J. KORESKA. Oct. 23, 1962, No. 40015/62. Heading B8F. [Also in Division A4] A steel shelf 1 is provided along its front edge with means for holding a label or like information strip 14. In one embodiment, Fig. 1, the bent front edge 3, 4, 5 of the shelf 1 defines a recess in which is welded a channel 8-10 having inturned lips 11, 12 against which an information bearing ribbon 14 is resiliently pressed by a foam rubber strip 13. In another embodiment (Fig. 2, not shown), recess defining parts 3, 5 of the shelf front edge are mutually inclined to define an undercut recess which slidably receives a rigid strip member 16 bearing information, e.g. plastic lettering. In another embodiment (Fig. 3, not shown), the depending flange 4 and lip 5 is replaced by a separately formed element 18-22 secured to the shelf underside. In a further embodiment (Fig. 4, not shown), a double shelf is formed at opposed longitudinal edges with integral C- shaped portions containing a resilient strip 32, e.g. of foamed nylon, which locates a replaceable information strip 33.
Patent GB-1523469-A (GB)
Title: File for papers
IPC: B42F21/00
Filed: 1976-08-10
Abstract: 1523469 Filing folders JETLEYS (GREAT BRITAIN) Ltd 10 Aug 1976 [1 Oct 1975] 40094/75 Heading B6E A filing folder comprising a pair of covers 10, 11, Fig. 1, articulated to one another by a spine 12 and provided along opposite edges 16 with flaps 14, 15, has one of the flaps 15, provided with an index tab 20, which is folded to provide an upstanding portion 23, Fig. 2, and adhered to the face of cover 11 by an adhesive portion 21.
Patent GB-1471516-A (GB)
Title: Fluid operated friction clutch
IPC: F16D25/10
Filed: 1975-10-02
Abstract: 1471516 Friction clutches HURTH VERWALTUNGS GmbH 2 Oct 1975 [31 Oct 1974] 40294/75 Heading F2C In an hydraulically operated multi-plate friction clutch wherein pressure liquid is supplied to a clutch engaging piston 18 (or 19) axially slidable in a cylinder 27 (or 28), one wall 24 of the cylinder is resilient and yields during pressure build-up in the cylinder to cushion clutch engagement. As shown in a double friction clutch for selectively connecting gears 2, 3 to a shaft 1 wherein pressure liquid is selectively supplied to clutch engaging servo cylin- 27, 28, the cylinders are separated by a resilient diaphragm 24. The diaphragm is secured at its inner (or outer) periphery to a sleeve 16 or (23) and slides at its outer (or inner) periphery on a sleeve 23 (or 16). A seal 26 is provided between the diaphragm 24 and sleeve 23. The clutch engaging characteristics may be changed by providing plate springs on either side of the diaphragm 24 (Fig. 2, not shown). Lubricating fluid is supplied through ducts 33, 34, 35 to friction discs 7, 9; 8, 11. The pistons 18, 19 are biased to a disengaged position by springs 21, 211 and circlips 23<SP>1</SP> carried by the sleeve 23 ensure that when one clutch piston 18 moves to engage the associated clutch plates 7, 9 the other piston 19 is retracted from its clutch plates 8, 10.
Patent GB-1246419-A (GB)
Title: Videotape recorders
Inventor: ATKINSON RONALD ROBERT
IPC: H04N17/06
Filed: 1969-08-12
Abstract: 1,246,419. Videotape recorders. BRITISH BROADCASTING CORP. 12 Aug., 1970 [12 Aug., 1969], No. 40343/69. Heading G5R. To detect malfunctioning of any of the rotary heads of a videotape recorder during a recording process, a monitoring record head (20, Fig. 1, not shown) is arranged ahead of the rotary heads and a monitoring pick-up head (21) after the rotary heads. The record head (20) records on the cue track a D.C. or low frequency A.C. monitoring signal which is then modified by the erasing effect of the R.F. fields of the rotary heads. The pick-up signal is differentiated and applied to a C.R.O. and the figures show the cue track and the C.R.O. trace with one rotary head working improperly. The monitoring signal may be applied longitudinally, or perpendicularly to the tape as in Fig. 8 (not shown), and the signal picked up may actuate an alarm.
Patent GB-894444-A (GB)
Title: Container with closing device
IPC: B65D47/12
Filed: 1960-11-24
Abstract: 894,444. Container closures. RUETZ, K. Nov. 24, 1960 [Nov. 28, 1959; Aug. 31, 1960], No. 40433/60. Class 125(3). A closure device comprises a socket 13 of mouldable plastics material formed with a groove 14 to receive a bead 12 on the container neck, annular surfaces 15 being provided on the socket and sealing against the inner surface of a cap 17 which is pressed on over the socket. The cap may carry an extension 20 fitting into the container neck and having a bead 21 which fits under the lower edge of the wall 18 of the socket the lower or upper edge of which may be formed with projections 22 engageable in depressions 23 formed on the lower edge, or on an inner shoulder of the cap. A pouring outlet 19 may be provided on the socket.
Patent GB-953039-A (GB)
Title: Hollow drill sharpener
IPC: B23P15/32
Filed: 1962-10-26
Abstract: 953,039. Drill sharpeners. B. F. DIRZIUS. Oct. 26, 1962, No. 40685/62. Headings B3B and B3C. A hollow drill sharpener comprises a housing 10 preferably of aluminium, bored at 16, a sleeve 13 preferably of steel, shrunk in bore 16, a countersunk bush 15, held radially by a ring 14, a non-rotating single-flute cutter 20 held axially by a nut 24, and a sliding, but non- rotary bush 31 axially adjustable by a graduated nut 27. The drill 17 is held in a hollow spindle 34 and bush 15, and is rotated by a handle 37, and is thus sharpened by cutter 20, the cuttings produced passing through apertures 38, 39.
Patent GB-1377708-A (GB)
Title: Concrete mix compositions
IPC: C04B28/06
Filed: 1972-09-01
Abstract: 1377708 Converters GENERAL REFRACTORIES CO 1 Sept 1972 [15 Sept 1971] 40705/72 Heading C1H A concrete mix comprises, in wt. per cent, 10-30 Ca aluminate cement, 0À05-0À3 of an ionizable inorganic A.M. salt, and 0-3 of a ball clay. Al silicate on Al 2 O 3  is used as aggregate. Salts specified are NaNO 3 , Na 3 PO 4 , Na 2 SiO 3 , NaCl, NaNO 2 , Na 2 CO 3  and corresponding K salts.
Patent GB-884387-A (GB)
Title: A rotary drive control unit for portable power driven tools
Inventor: SANDERS ALBERT VICTOR
IPC: F16C1/08
Filed: 1959-12-02
Abstract: 884,387. Clutch control. HELI-STRAND TOOLS Ltd. May 25, 1960 [Dec. 2, 1959], No. 40939/59. Class 80 (2). A portable power-driven hand tool is operated by a flexible shaft 17 and comprises a cone clutch 5, 10 engaged by gripping a hand lever 14 acting through a plunger 18 and springy pressure plate 19 against a release spring 13. The end of shaft 17 is connected by a splined joint 24 to the shaft 2 carrying the clutch element 10, and the pressure plate 19 may be adjusted by a screw 19a to vary the clearance between the clutch elements.