baber/WOPTO huggingface dataset:
Patent GB-1363448-A (GB)
Title: Magnetic recording material
IPC: G11B5/702
Filed: 1971-10-01
Abstract: 1363448 Magnetic recording media FUJI PHOTO FILM CO Ltd 1 Oct 1971 [5 Oct 1970] 45910/71 Heading B2E A magnetic recording medium comprises a support bearing a layer of ferromagnetic powder dispersed in a polyamide-imide resin binder, suitably of mol. wt 10,000-60,000. The magnetic material may be γ-Fe 2 O 3 , Fe 3 O 4  Cocontaining γ-Fe 2 O 3 , Co-containing Pe 3 O 4 , Zn x  Fe( 1-x ) O.Fe 2 O 3 , CrO 2 , Fe-Co-Ni alloy, Co-Ni alloy or Fe-Co-Cu alloy. The support may be a plate of aluminium, stainless steel or glass, or a film of heat-stable polyester, cellulose triacetate, polyimide or polyamide. In Examples, formulations of magnetic powder plus graphite, carbon black, silicone oil or fluorine oil dispersed in solutions of polyamide imide resins are coated onto backing supports, dried and cut into recording tapes, or spin-coated onto a disc support. The recording media so produced are heat-resistant and function at 200‹C or above.
Patent GB-1116638-A (GB)
Title: Improvements in or relating to radar plan-position indicator systems
IPC: G01S7/22
Filed: 1965-10-29
Abstract: 1,116,638. Radar displays; cathode-ray tube circuits. HOLLANDSE SIGNAALAPPARATEN N.V. 29 Oct., 1965 [30 Oct., 1964], No. 45937/65. Headings H4D and H4T. In a radar PPI system having a C.R.T. 16, which is provided with orthogonal deflection members (not shown), wherein, with the use of a digital sine-cosine signal generator 22 coupled to the antenna rotator, a digital marker signal generator 23, four digital to analogue converters 24/27 and four integrators 28/31, range and azimuth information as well as cartesian markers can be displayed on the screen of the tube, four digital switches 32/35 are provided through which either the output signals of the said digital sine-cosine generator, or the output signals of the said marker signal generator can be supplied to the digital to analogue converters, the output of each converter is directly connected to a pair of parallel connected amplifiers 40/41, 42/43, 44/45, 46/47, each coupled to a respective deflection member, one (40, 42, 44, 46) of said amplifiers in each pair acting as an integrator by means of a capacitor 48/51, connected between its input and output while the other (41, 43, 45, 47) acts as a linear amplifier by means of a resistor 52/55, connected between its input and output, and the said resistor and capacitor are each shorted by a switch during the respective display periods of the range/ azimuth information and of the cartesian markers. A time control circuit 14 produces a pre-sync. pulse, Fig. 2a (not shown), at time t 00 , a few microseconds before the sync. pulse, Fig. 2b, which produces the transmitted radar pulse. The pre-sync. pulse, Fig. 2a, in turn produces a switching signal, Fig. 2c, which is fed to switches 32/35, to connect the output of generator 22 to the digital to analogue converters. Initially, however, all switches 56/63 are closed such that all the amplifiers 40/47 are inoperative. The sync. pulse, Fig. 2b, initiates at time t 0  a switching signal Fig. 2d, which opens switches 56, 58, 60, 62 for the duration of the echo return period t 0  to t 1  such that for said periods the sine or cosine input to the now integrating amplifiers 40, 42, 44, 46, produces at the outputs thereof, ramp signals, Fig. 2g (time t 0  to t 1 ) for application to the deflection members of the C.R.T. At the end of the switching signal, Fig. 2c, i.e. the end of the echo return period, the switches 32/35 connect the converters 24/27 to the digital marker signal generator. All the amplifiers are, however, again short circuited until time t 2 , when a switching signal, Fig. 2e, is produced by the time control 14. Switches 57, 59, 61, 63 are now opened, so that the marker signals are merely linearly amplified (see times t 2  to t 00 , Fig. 2g) for application to the deflection members of the C.R.T. A brightness control signal, Fig. 2f, is also fed to the C.R.T. Periods t 00  to t 0  and t 1  to t 2  are chosen as long enough for the necessary digital to analogue converting to take place.
Patent GB-955942-A (GB)
Title: Improvements in or relating to extrusion and injection moulding devices for synthetic thermoplastics
IPC: B29C48/44
Filed: 1962-12-06
Abstract: 955,942. Pug-mills. GEWERKSCHAFT SCHALKER EISENHUTTE. Dec. 6, 1962 [Dec. 6, 1961 ; Sept. 8, 1962], No. 46088/62. Heading B1C. [Also in Division B5] A device for the extrusion or injection moulding of synthetic thermoplastics comprises a rotatable central shaft 3 surrounded by helically toothed members 4 meshing with the central shaft 3 and/or a surrounding jacket 1, and damming bars 5 fitted lengthwise between adjacent pairs of members 4, the bars having a section conforming closely to the external diameters of the teeth on the members 4 and shaft 3, and the internal diameter of the teeth on the jacket 1. The damming bars may be joined at the ends to form a cage ; when the members 4 do not mesh with the jacket, they may be fixed or, with the damming bars, be driven in rotation round the shaft 3. In an extrusion moulding device the members 4 may extend into the region of a feed hopper 2, Fig. 1, the bars 5 ending short of this region, or both the members 4 and damming bars 5 may end short of the feed hopper 2, there being a worm extension 3a, Fig. 2 (not shown), in the region of the feed hopper. In an injection moulding device the central shaft 3, Fig. 4, together with the members 4 and bars 5, constitute an injection piston, axial movement of which is caused by the actuation of a piston and cylinder 6, 7. Specification 902,513 is referred to.
Patent GB-1444161-A (GB)
Title: Radiation intensifying screen
IPC: F21K2/00
Filed: 1973-10-04
Abstract: 1444161 Luminescent screens DF WINNEK 4 Oct 1973 [17 Jan 1973] 46448/73 Heading C4S [Also in Division H5] An intensifying screen comprises a sheet of material transparent to radiation of a first wavelength range and opaque to radiation of a second wavelength range, the sheet including a plurality of holes extending from one face but not as far as the other face, each hole being of circular or polygonal cross-section and being filled with phosphor 28 producing radiation in the second wavelength upon excitation by radiation in the first range. The screen achieves maximum resolution by reducing diffusion. Sheet 12 is generally rigid, such as of ceramic with holes milled by a described photoforming process producing holes with 2 degree taper characteristic of the technique, the phosphor being sprayed on the sheet. A Be-Cu mixture or plastics sheet 12 is also exemplified. Excitation may be X-rays producing visible light or other radiation from the fluorescent material. The phosphor may be ZnS; Cu, Cl, fast or slow response, speed also varying with crystal sizes. Sheet 12 may be of any configuration, e.g. rectangular. The holes may be 9 Î 10<SP>4</SP> or more /ins.<SP>2</SP>, each hole being circular, hexagonal or square cross-section for example. Fig. 1 (not shown) is a film cassette of an X-ray apparatus which may be for diagnostic purposes and includes Bakelite (Registered Trade Mark) plate (18) and photographic film (22). Screen dimensions are given.
Patent GB-1109585-A (GB)
Title: Aeroplane wings
IPC: B64C3/40
Filed: 1965-11-03
Abstract: 1,109,585. Aircraft. E. LUFF. 4 Jan., 1967 [3 Nov., 1965], No. 46482/65. Heading B7W. An aircraft comprises a wing of delta planform comprising a plurality of adjoining panels each of substantially triangular profile pivotally interconnected along adjacent sides to form spanwise extending corrugations whereby the wing may be expanded or collapsed to vary the angle of sweep of the wing leading edges, the crests and troughs of the corrugations extending aft from the leading part of the wing. Extension or contraction may be effected by rods or cables extending spanwise through aligned apertures in the wing panels and secured to the outermost panels.
Patent GB-1438337-A (GB)
IPC: C07D249/08
Filed: 1973-10-05
Abstract: 1438337 # 2  -1,2,4 - Triazolin - 5 - one derivatives SIGMA-TAU INDUSTRIE FARMACEUTICHE RIUNITE SpA 5 Oct 1973 [16 Oct 1972] 46540/73 Heading C2C Novel 1 - [3 - (4 - m - chlorophenyl - 1 - piperazinyl) - propyl] - 3,4 - diethyl - # 2  - 1,2,4- triazolin - 5 - one and acid addition salts thereof are prepared (a) by treating an alkali metal salt of 3,4-diethyl-# 2 -1,2,4-triazolin-5-one with a 1 - in - chloro - phenyl - 4 - (3 - halopropyl)piperazine, (b) by treating an alkali metal salt of 3,4-diethyl-# 2 -1,2,4-triazolin-5- one with l-bromo-3-chloropropane and heating the resulting 1 - (3 - chloropropyl) - 3,4 - diethyl- # 2  - 1,2,4 - triazolin - 5 - one with N - m - chlorophenyl - piperazine in the presence of a HCl acceptor and (c) by warming 1-(3-chloropropyl)- 3,4 - diethyl - # 2  - 1,2,4 - triazolin - 5 - one with excess diethanolamine and treating the resulting 1 - (3 - bis - hydroxyethylaminopropyl - 3,4- diethyl - # 2  - 1,2,4 - triazolin - 5 - one with thionyl chloride, followed by m-chloroaniline; followed optionally by salification.
Patent GB-1421487-A (GB)
Title: Magneto-motive bistable switching devices
IPC: H01H47/12
Filed: 1973-10-05
Abstract: 1421487 Bi-stable relays; movable magnet switches; Curie point switches W H KURPANEK 5 Oct 1973 46576/73 Heading H1N A switch suitable for alternative electromagnetic or manual operation to each of its bistable positions has a contact bridge armature 3 which can be moved to alternative positions as co-pending application 45788/73 by pulsing of coil 5 or by movement of the coupled permanent magnets 1 when an accessible knob 12 is moved. Thus the armature 3 can be changed over by a pulse and reset by a reverse pulse (bi-stable relay mode of operation), changed over by magnet movement and reset by reverse magnet movement (magnetic switch mode of operation), changed over by a pulse and reset by magnet movement or vice versa (magnetically held mode) or demagnetized on reaching its Curie point temperature and reset electromagnetically or by the movable magnets on cooling.
Patent GB-1096326-A (GB)
Title: Manufacture of acids and esters
Inventor: ELSON GEORGE WYNNE
IPC: C07C29/147
Filed: 1965-11-03
Abstract: Compounds in which an optionally substituted, saturated or unsaturated C14- 16 straight-chain is terminated at each end by a CO2R group (R = H, alkyl or aryl, not more than C10), are made by fermentation, with an active strain of Torulopsis, of a starting material containing a C15- 25 straight-chain terminated at one end by Me and at the other by an (organic or inorganic) ester group; the initial product is hydrolysed to the dicarboxylic acid or reacted with ROH to produce the diester, and the latter may also be hydrolysed to the dicarboxylic acid.  Exemplified products are dimethyl, diethyl, di-n-hexyl and diphenyl 1,16-hexadecandioate; dimethyl 1,17-heptadecandioate, 1,18-octadecandioate, 2-methyl-1,16-hexadecandioate, hexadec-7-en-1,16-dioate and octadec-9-en-1,18-dioate; 1,16-hexadecandioic and 2-methyl-1,16-hexadecandioic acids.  Intermediates.  - Methyl 2 - methylpalmitate, made by esterifying the acid with MeOH/H2SO4, is reacted with LiAlH4 to give 2\methyl-n-hexadecanol which is converted to 2-methyl-n-hexadecyl bromide with PBr3/pyridine.
Patent GB-1485277-A (GB)
Title: Servo steering mechanism for motor vehicles
IPC: B62D5/24
Filed: 1974-10-29
Abstract: 1485277 Servo steering mechanism K-H THOMAS [trading as LANGEN & CO] 29 Oct 1974 [22 Nov 1973] 46874/74 Heading B7H In a vehicle servo steering mechanism for motor vehicles of the kind comprising a worm shaft 10 which penetrates through a housing 1 and engages a worm nut 8 positioned for angular adjustment on a servo piston 4 and wherein a lever 19, secured to the worm nut 8, extends through a groove in the housing and through the piston 4, for moving a valve member 37, 55, 57 which is adapted to control pressure medium to the working chambers 14, 15, the valve member having reaction surfaces P 1 , F 1 , subjected to the respective working chamber pressures in order to transmit a feel to the driver, the piston 4 is stepped and the valve member 37, 55, 57 is operated via at least one regulating spring 66, 67 by means of an auxiliary piston 24 centred by a stressed spring 26 and itself operated by the lever 19 connected to the steering gear nut 8. As shown in Fig. 2, the valve comprises a steering part 37 having three bands 38, 39, 40 which form a 3/3 way stepped piston for selective connection of working chamber 15 with pressure source 47, outlet 51, or as is shown in Fig. 2, for closing the chamber 15 by land 39. The free end of land 38 engages a tappet 55 lead through a bore 56 in auxiliary piston 24 and reacts with its opposite end on a reaction piston 57. In an alternative arrangement Fig. 4 (not shown) the springs 66, 67 rest on a spiral bush 70 screwed into auxiliary piston (24<SP>1</SP>) thus allowing adjustment of the prestressing of springs 66, 67. Springs 66, 67 may be replaced by a single spring, similar to spring 29, movable in both directions. Also, the valve 37, 55, 57 may be formed with separate reaction pistons arranged at the ends of the valve.
Patent GB-1085297-A (GB)
Title: Improvements in pumps and motors and in cams therefor
IPC: F03C1/30
Filed: 1964-11-18
Abstract: 1,085,297. Internal shoe-drum brakes. H. TEVES, E. A. TEVES, and M. TAUSEND, [trading as ALFRED TEVES MASCHINEN UND ARMATURENFABRIK KOMM. GES.]. Oct. 9, 1964 [Nov. 2, 1963], No. 41317/64. Heading F2E.  In a wedge-operated internal shoedrum brake having an axially displaceable brake wedge 8 to operate the brake shoes (not shown) through rollers 10 and push-rods 9, the brake wedge is pivotally mounted in a rocker bearing in the brake carrier or brake back plate 14. The wedge may be operated by means of a fluidpressure-operated piston 2 or by means of a hand brake lever 7 which act through a toggle lever mechanism 4, 4a to expand the latter and slide the brake wedge 8 between the two push-rods 9 to actuate the brake shoes by providing the rocker bearing 11 in the brake carrier 14 the component of force operative transversely of the brake wedge 8 which produces a torque is thereby absorbed. Should one brake lining become con-  siderably worn the rocker bearing 11 will pivot to allow the wedge to transmit a uniform brakeapplying pressure to both brake shoes through the push-rods 9. An adjusting screw 6 is provided for adjusting the hand brake lever 7.
Patent GB-1254036-A (GB)
Title: Improvements in or relating to electric contact spring assemblies
IPC: H01R13/115
Filed: 1969-09-25
Abstract: 1,254,036. Contact spring. SIEMENS A.G. 25 Sept., 1969 [26 Sept., 1968], No. 47207/69. Heading H2E. A contact spring assembly includes a contact spring fixed at the base 3, having legs 1, 2 with punched out contact tongues 6, 7. The upper portions (8, 9, Fig. 1a) are preloaded by centering ridges 11, 12. Upon insertion of a contact between tongues 6, 7 the contact force increases rapidly for little deflection until the ends of the legs lift from the ridges 11, 12 whence contact force increases less rapidly (Fig. 2). As displayed in Fig. 4 (not shown) the ends of the legs do not lift from the ridges 11, 12 until a taper free contact pin has more than half completed its deflection of the contact spring. Each leg may have a pair of contact tongues on either side of a central portion for preloading (Fig. 5), the tongues may project downwards towards the base 3 (Fig. 6) or may be separately formed (Fig. 7). In Figs. 8a, 8b (not shown) the contact tongues are formed in the legs (17, 18) and projections (e.g. 19, 20) punched from either side of each leg, and joined thereto near the free end provide the extensions for preloading, ridges (e.g. 16) being provided in the housing for this purpose. The preloading projections may bear directly against each other (23, 24, Fig. 9) and may provide further contact locations. Springs of the kind disclosed may be made with only one leg. The effect of variable contact dimensions on contact force is thus minimized.
Patent GB-1260078-A (GB)
Title: Adhesive composition
Inventor: KAZAMA SEIJI
IPC: C08G18/76
Filed: 1970-10-05
Abstract: 1,260,078. Laminates. TAKEDA YAKUHIN KOGYO K.K. 5 Oct., 1970 [6 Oct., 1969], No. 47280/70. Heading B5N. [Also in Division C3] Articles e.g. fabrics, films and sheets, made of polyesters or polyolefins may be adhered to each other or to other substrates with an adhesive composition which comprises per 100 p.b.w. of component (A) from 1 to 30 p.b.w. of component (B), component (A) being a hydroxy-terminated polyurethane prepolymer prepared by reacting a polyester diol of M.W. 500 to 3000 with #, #<SP>1</SP>- diisocyanate dimethyl benzene at an NCO/OH ratio of 1À02 to 1À10 to give an NCO-terminated prepolymer which is then reacted with a polyol of M.W. not higher than 400 and having at least 3 OH groups per molecule at an OH/NCO ratio of 3 to 10 and component (B) being an NCO- terminated prepolymer which is prepared by reacting a polyol of M.W. not higher than 400 and having at least 20 H groups per molecule and an excess amount of #,#<SP>1</SP>-diisocyanato dimethyl benzene, the amounts being such that the NCO/OH ratio is not less than 1À5 (see Division C3). The adhesive composition may be dissolved in a solvent. In specific examples two polyethylene terephthalate films have various adhesive compositions applied to their surfaces and after pre-drying are piled with their adhesive layers in contact with each other. The piled film is heated under pressure to allow curing to take place. Similarly two polypropylene films may be adhered together.
Patent GB-1326637-A (GB)
Title: Automatic pilot for ships
IPC: G05D1/02
Filed: 1970-10-07
Abstract: 1326637 Automatic steering control ANSCHUTZ & CO GmbH 7 Oct 1970 [22 Oct 1969] 47775/70 Heading G3R In a gyroscopic automatic pilot for a ship using rudder position feedback, a signal determining the desired course is adjustable in steps at a controlled frequency and in a direction dependent on a manual control and on a system condition. As shown, a gyro-compass 1, responsive to the heading of a ship 10, sends signals to a repeater compass 2 the indication of which is compared with a desired heading set by a stepping motor 11. Any error results in an output from a differential gear 3 which, through a follow-up servo-system 6, 7, 8 operates a rudder 9 to correct the heading. The desired heading may be adjusted by operating a knob 14' so that one or other of two switches 16, 17 is operated according to the sense of adjustment and a potentiometer 14 is operated to vary the frequency of a pulse generator 13 in proportion to the extent of adjustment. This results, through a transistorized digital logic circuit, in the adjustment of motor 11 in steps at a frequency dependent on the extent of movement of knob 14'. If under these conditions, the error becomes large enough in either sense to cause a cam 4 to operate a switch 19, then a fixed frequency pulse generator 15 is substituted for pulse generator 13 to operate the stepping motor in a sense determined by a cam-operated switch 20 to reduce the error until switch 19 opens again. A switch 18 may be operated to change over to manual control. During such control, switch 20 controls stepping motor 11 through logic circuit 12 so as to maintain the output of differential gear 3 in its zero error position in readiness for reversion to automatic control.
Patent GB-1517705-A (GB)
Title: Pressure variable capacitor
IPC: H01G5/00
Filed: 1975-11-21
Abstract: 1517705 Pressure transducer BENDIX CORP 21 Nov 1975 [7 Jan 1975] 48035/75 Heading G1N A pressure responsive capacitor comprises an electrically non-conductive substrate 10 having affixed to a portion of a supporting surface thereof an electrically conductive film 12 and overlying the film a sealed thin flexible electrically conductive diaphragm 16. A dielectric film 14 is interposed between the conductive film 12 and the diaphragm 16 and the arrangement is such that as the pressure difference across the diapragm increases the diaphragm, if, as shown, it is in engagement with the dielectric film 14, rolls on the surface of the film 14 or the diaphragm first engages the dielectric film 14 and then rolls thereon. The dielectric film 14 may, as shown, be sealed over the conductive film 12. The dielectric film 14 may be of a glass material. Instead of the periphery of the diaphragm being sealed to the substrate 10, as shown, it may be spaced therefrom by an annular ring, Figs. 4 and 5 (not shown), which may be tapered at its edge engaging the diaphragm (Fig. 5). The diaphragm and ring may be covered by a hatshaped elastomer structure (Fig. 5). In use the capacitor may be mounted and form a boundary between two sealed chambers, Fig. 7 (not shown).
Patent GB-1275606-A (GB)
Title: Improved let-off mechanism for weaving looms
IPC: D03D49/08
Filed: 1969-10-01
Abstract: 1275606 Letting-off warps NORTH AMERICAN ROCKWELL CORP 1 Oct 1969 [20 Nov 1968] 48151/69 Heading DIE  A braking device 36 for a warp beam 21 is controlled by a sensing device 29 which senses the angle of the warps 22 extending from the beam to a support roller 23. The device 29 comprises a rod which extends into the warp sheet 22, the rod being supported by a pivoted arm 30 and being connected by a linkage 28, 27, 31, 34 to a brake actuating cylinder 38 As the angle of the warp sheet alters from 22 to 22' the device 29 decreases the braking pressure. A tensioning roller 26 is supported by a lever 25 pivoted at 24 and lever 27 is pivoted on the lower arm of lever 25.