baber/WOPTO huggingface dataset:
Patent GB-1230344-A (GB)
IPC: G02B13/04
Filed: 1969-04-16
Abstract: 1,230,344. Optical objectives. WILD HEERBRUGG A.G. and L. BERTELE. April 16, 1969 [April 16, 1968], No.19534/69. Heading G2J. A wide angle lens, of focal length F, comprises diverging outer lens members L 1  and L 9 , and inner lens members L 2 , L 3  and L 4 , and L 5  L 6  L 7  and L 8  separated by a diaphragm B1, the lenses L 3  and L 4  and L 5  and L 6  being cemented at surfaces convex to the diaphragm to form converging portions and spaced from the diverging portions L 2 , and L 7  and L 8  respectively, the spacing 1, between L 1  and L 2  being greater than that, l 2 , between L 2  and L 3 , and that, l 5 , between L 8  and L 9  greater that that, l 4 , between L 6  and L 7 , and the diference between the radii of curvature of the surfaces r 10  and r 11  bounding the space l 4  being at least 1À35 times greater than that between the surfaces r 4  r 5  bounding the space l 2 . The refractive indices of lenses L 3  and L 6  are greater than these of L 4  and L 5  respectively, and the sum of the radii of curvature r 5  and r 10  of the surfaces of L 3  and L 6  remote from the diaphragm is greater than 0À65F., these surfaces being separated by a distance greater than 0À57F., the sum of the air spaces associated with the inner members is between 0À002F. and 0À30F. In another embodment Fig. 2 (not shown) a further diverging lens may be placed adjacent the outer lens member on the image side of the objective, and in a further embodiment Fig. 3 (not shown) the divergent portion of the inner lens member on the image side of the objective may be formed from three elements. The radius of the objective at the image side is smaller, but greater than one quarter, than that at the objective side. Optical data for seven examples is given.
Patent GB-1231574-A (GB)
IPC: H02K3/28
Filed: 1967-07-20
Abstract: 1,231,574. Winding lay-outs for dynamo-electric machines. NATIONAL RESEARCH DEVELOPMENT CORP. 19 July, 1968 [20 July, 1967], No. 33417/67. Heading H2A. In an armature winding for an A.C. motor having multiple parallel circuits per phase, the expression 2p/A (where 2p equals the pole number and A is the number of parallel circuits per phase) is made to take a value which is not an integer whereby a combination of optimum performance and a high winding factor with a standard frame size may be achieved. The winding is of the double-layer type in a frame having a slot number equal to P x A x C (P equals the number of phases and C equals the number of coils per circuit). The coils for connection in series in each circuit are selected by first ascertaining by slot vector calculation the magnitude and phase angle of the induced E.M.F. in each coil and equal numbers of coils are then connected in series such that the inequality in the induced E.M.F.s of each group of coils to be connected in parallel does not exceed 6% and preferably is 2À5% or less.
Patent GB-1232393-A (GB)
IPC: C07B61/00
Filed: 1967-07-11
Abstract: 1,232,393. Catalytic hydrodesulphurization. BRITISH PETROLEUM CO. Ltd. 2 July, 1968 [11 July, 1967], No. 31771/67. Heading C5E. A process for the desulphurization of an aromatic-containing hydrocarbon fraction containing up to 50 p.p.m. by weight sulphur in which not more than 10 mole per cent hydrogenation of the aromatic hydrocarbons occurs comprises passing the fraction in the liquid phase and in the presence of hydrogen upwardly or downwardly through a bed of supported nickel catalyst at an elevated temperature and pressure such that sulphur combines with the nickel but substantially no hydrogen sulphide is produced, the amount of hydrogen present being not more than the maximum amount that would dissolve in the liquid fraction at the process temperature and pressure. The preferred catalyst for the process comprises nickel on sepiolite. High-sulphur-containing feedstocks may be subjected to a preliminary desulphurization over a conventional catalyst such as cobalt oxide and molybdenum oxide on alumina.
Patent GB-1232516-A (GB)
IPC: F16H57/02
Filed: 1969-05-21
Abstract: 1,232,516. Toothed gearing. F. DURAND. 21 May, 1989 [21 May, 1968], No. 26044/69. Heading F2Q. A device for driving an externally toothed gear-wheel 1 comprises a pinion 2 mounted in a trolley 3 which is supported from a fixed member 9 by means of an arm 7 and is guided by a roller 5 engaging a track 6 provided on gearwheel 1, the axis of roller 5 lying in a plane containing the axes of pinion 2 and gear-wheel 1. One end of the arm 7 is connected to member 9 by a ball-and-socket joint 8, and the other end of the arm 7 carries a pair of trunnions 10 which engage flanges 11 on the trolley 3. The axis of trunnions 10 is disposed in the medial plane of the pinion teeth and at right-angles to the pinion axis. Modified forms of the arm 7 are shown, such as arms 7a, 7c, 7d and 7e in Figs. 2, 4, 5 and 6. The single guide roller 5 may be replaced by two coaxial rollers.
Patent GB-1233911-A (GB)
IPC: G11C11/22
Filed: 1968-05-07
Abstract: 1,233,911. Ferroelectric devices. E. W. BLISS CO. 7 May, 1968 [23 May, 1967], No. 21494/68. Heading H1K. [Also in Division H3] In a ceramic memory device comprising a ferroelectric memory sheet with electrodes on opposed major surfaces which is read out non- destructively by energizing a piezo-electric or magnetostrictive drive sheet so as to impart mechanical stress to the memory sheet, capacitive coupling between electrodes of the device is minimized by an interposed isolation arrangement consisting of a ferroelectric sheet and a conductive layer. A plurality of discrete storage capacitors is formed by arranging one or both of the electrodes in the form of strips. Damper sheets may be provided on the outside faces of the device which is formed as a unitary structure by fusing together memory, drive and isolation sheets of ferroelectric material and intermediate electrode and conductive layers of powdered platinum oxide, the piezoelectric properties of the ferroelectric drive sheet being used. The prior arrangement, Fig. 1 (not shown), is described in Specifications 1,177,939 and 1,177,940. The memory sheet may be of barium titanate, rochelle salt, or lead metaniobiate, but preferably a lead titanate zirconate composition is used for both the memory and the drive sheets. A dielectric storage matrix is shown in Fig. 3 and comprises memory, drive and damping sheets 34, 32, 36, and electrodes in the form of conductive strips 40, 42, 44 which respectively form drive lines, parallel common lines and orthogonal bit lines. The various sheets may be of different dimensions so that external connections may be made directly on to the conductive layers. Alternatively, conductive pads, each in contact with an end of a conductive layer or strip, may be fitted to the edges of the assembled device. Two of the matrices of Fig. 3 may be assembled into a single stack as shown in Fig. 5 with corresponding sheets connected in parallel, Fig. 6 (not shown). This arrangement provides a storage matrix with higher capacitance values than the Fig. 5 arrangement. A similar arrangement is shown in Fig. 10, but in this case only one storage sheet 34<SP>11</SP> of additional thickness is used, and single strip drive lines 40, 40<SP>1</SP> are provided for single word storage. Electrical reading and writing in a single bit store is described with reference to Fig. 11 (not shown).
Patent GB-1237898-A (GB)
IPC: H03K3/84
Filed: 1968-09-30
Abstract: 1,237,898. Marine signalling. WALLACE & TIERNAN Inc. 30 Sept., 1968 [29 Sept., 1967], No. 46328/68. Heading G4F. [Also in Division H3] In a circuit for flashing a marine signal lamp 28 (or operating an acoustic warning) according to a predetermined code, a pulse generator 14 is arranged to trigger the first stage S1 of a counter 15, each stage of which determines the period of individual time periods controlled by a timer 16 which steps the counter at the end of each period, alternate stages S1 S3, S5 of the counter determining the times when lamp 28 will be energized. The circuit is supplied from a battery 10 via a series regulating transistor 31. The beginning of each coded train is determined by a pulse from an oscillator 14 comprising a unijunction transistor 38 coupled via a transistor 44 to the first counter stage S1 comprising a silicon controlled switch 53. A photo-conductive cell PC and a silicon controlled rectifier 45 ensure that transistor 44 only passes pulses during times of low ambient illumination. The timer 13 comprises a capacitor 62 successively charged by resistors 18 . . . 26 depending upon which of the silicon controlled switches S1 . . . S5 is conductive. When capacitor 62 is charged sufficiently to trigger unijunction transistor 63, capacitor 62 is discharged, the resulting pulse across resistor 64 turning off transistor 55 which turns off all the silicon controlled switches S1 . . . S5. The charge stored in the capacitor 71, connected to the previously conductive switch, however, ensures that the next switch is turned on so as to initiate the succeeding time period. The conductive state is thus stepped along the chain of switches S1 . . . S5 until S5 is turned off when the circuit is inhibited until the next pulse from generator 14. Whenever alternate ones of switches S1 ... S5 are conductive, the voltage at the cathode of the conductive switch is applied by resistor 74 . . . 76 to an amplifier comprising transistors 80, 83, 85, 91 and 94, the output of which is used to turn on a series regulator comprising transistors 104, 107 which light the lamp 28 for the duration of the conductive period of the appropriate switch S1 . . . S5. The circuit is arranged so that the short circuit current is negligible. Temperature stabilizing thermistor 106 is included. The circuit may be arranged to provide the morse letter U. Modifications.-In Fig. 4 the series regulating transistor 107 is replaced by an SCR117 which is turned on by pulses from alternate switches S1 . . . S5 (Fig. 2). A commutating SCR131 is turned on by pulses from the other switches so as to turn off the main SCR117 at the end of each period of required illumination.
Patent GB-1239331-A (GB)
IPC: D02G1/18
Filed: 1969-06-17
Abstract: 1,239,331. Bulked yarn. MITSUBISHI RAYON CO. Ltd. 17 June, 1969, No. 30726/69. Headings D1F and D1W. A bulky elastic composite yarn is made by twisting together a composite polypropylene filament yarn, that is potentially crimpable by a relaxation treatment at 80‹C to 150‹C., and another textile yarn, and subsequently heat treating the composite yarn under relaxed conditions to develop crimps in the yarn. The yarns to be twisted may be fed at the same speeds or the said other yarn may be fed at a faster rate than the composite polypropylene filament yarn whereby the other yarn is wrapped around the polypropylene yarn. In a preferred embodiment both yarns are composite polypropylene filament yarns. The said other yarn, which may be silk, acetate, polyamide, polyester, polyolefin, acrylic, vinylic, cotton or viscose rayon, filament or staple fibre yarn, may be wrapped helically around the polypropylene yarn in a constant twisting direction i.e. constant twist angle. In an alternative embodiment two yarns are wrapped helically around the composite polypropylene filament yarn in opposite twisting directions. It is preferred that the polypropylene filament yarn is spun from two components A, B such that in the undrawn filament one component A has an intrinsic viscosity from 1.4-3.0 and a birefringence from 8 x 10<SP>-3</SP> to 27 x 10<SP>-3</SP> and the other component B has an intrinsic viscosity from 0.8-3.0 and a birefringence within a range shown by the zone a b c d in Figure 8 (not shown) which is determined in accordance with the birefring- ence of component A. The other yarn preferably has a potential heat shrinkability below 10%. The shrinkage of the filaments under relaxed conditions may be controlled, and the heat treatment may be a dry or wet heat treatment.
Patent GB-1257104-A (GB)
IPC: G03F7/20
Filed: 1969-04-10
Abstract: 1,257,104. Optical drafting machines. LICENTIA PATENT-VERWALTUNGS G.m.b.H. April 10, 1969 [April 10, 1968), No. 18531/69. Heading G1A. [Also in Divisions G2 and G3] Apparatus for exposing symbols upon a photosensitive drawing surface 15 such as in the production of conductor paths of printed circuits comprises a drawing head 1 which is relatively movable to the bore 15 and which is connected to a projection device 2 by a fibre-optic light guide ' 9 wherein the luminous flux passing therethrough is regulated by a controllable member 8, the regulation being effected by illuminating different numbers of fibres in the guide. As shown the device 2 which comprises a light source 3, a condenser and a lens 6 focuses light evenly on to the input end 18 of the guide 9 which transmits the light to the head 1 which comprises a condenser 10, a semi-transparent mirror 11 which directs part of the light through a lens 16 to a photo-diode 17 and part through a second condenser 12, a symbol store 13 and a lens 14 which reproduces the symbols of store 13 on surface 15. The member 8 may comprise a vane 7 carried by a moving coil controlled by an adding circuit 21 which compares desired signals supplied by a digital-to-analogue speed converter 31 associated with the mechanical drive of the drawing machine and by a control 32 associated with the area of the particular symbol selected with the actual signal obtained from the photodiode 17. Lens 16 and photo-diode 17 may be mounted on the head 1. The cross-section of the guide may be rectangular at the input end 18 and circular at the output end 19 to achieve a linear relationship between vane 7 deflection and luminous flux input in which case vane 7 may be actuated by a digitalized member 8 e.g. a stepping motor. Vane 7 may be actuated by a plungertype coil of an electro-dynamic or permanent magnet system and may be replaced by a mirror system or other diaphragms.
Patent GB-1258942-A (GB)
IPC: H01L23/485
Filed: 1969-02-10
Abstract: 1,258,942. Semi-conductor devices. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 10 Feb., 1969 [13 Feb., 1968 (2)], No. 7069/69. Heading H1K. [Also in Division C7] A method of manufacturing a semi-conductor device having at least one semi-conductor body with rigid beam leads projecting laterally from the body comprises providing the leads by vapour deposition of successive layers of metal on the semi-conductor body in a vacuum using apparatus comprising in an evacuated container a support for the semi-conductor device substrate, a vaporizer and a series of wire supports on a rotatable disc each having a hooked end portion for suspending a charge of metal to be evaporated. These charges are fed to the vaporizer in succession, the substrate being screened during the initial and final phases of each evaporation step to avoid the deposition of impurities. The charges of metal may alternatively be suspended on a single support and fed in succession by a rotating cam along the support to its hooked end where they are vaporized. The semi-conductor device may be of silicon and the metal deposited thereon to form the leads may be aluminium, but complex thick layers may be formed comprising component thin layers of different metals such as gold, copper or nickel on aluminium, or gold on titanium and platinum.
Patent GB-1265513-A (GB)
Inventor: HAJOS Z G
IPC: C07C61/13
Filed: 1969-10-02
Abstract: 1,265,513. Keto derivatives of hexahydroindane and decahydronaphthalene. F. HOFFMANN-LA ROCHE & CO. A.G. 2 Oct., 1969 [4 Oct., 1968; 28 July, 1969], No. 45273/70. Divided out of 1,265,512. Heading C2C. Novel ketones of the formula in which m is 1 or 2, B is a carboxy, C 1-7  alkoxycarbonyl, aryloxyoarbonyl, C 1-7  alkylsulphinyl or C 1-7  alkylsulphonyl group, Z represents a carbonyl, a C 1-7  alkylenedioxymethylene or >CH(0R 2 ) group (where R 2  is hydrogen, C 1-7  alkyl, C 1-7  alkoxy-C 1-7  alkyl; phenyl-C 1-7 -alkyl, tetrahydropyranyl, C 1-6  alkanoyl, benzoyl, nitrobenzoyl, carboxy-C 1-7 -alkyl, carboxy-benzoyl, trifluoroacetyl or camphorsulphonyl), R 4  is hydrogen or C 1-7  alkyl, R 1  is hydrogen, C 1-7  alkyl or a group of the formulµ (where R 7  is C 1-7  alkyl, R 15  is an oxo, C 1-7  alkylenedioxy, arylenedioxy or a hydrogen atom and a C 1-7  alkoxy group, R 25  and R 26  are hydrogen, hydroxy or C 1-7  alkyl; R<SP>1</SP> is hydrogen or C 1-7  alkyl and R<SP>11</SP> is hydrogen, C 1-7  alkyl, C 1-7  alkylaryl or aralkyl) and the alkali metal salts of the free acids, are prepared by reacting in an inert solvent and in the absence of oxygen, a compound of the formula in which X is a leaving group; with a ketone of the Formula III  in the presence of a base sufficiently strong to form the conjugate anion of ketone III, e.g. an alkali metal alkoxide. Specified leaving groups, X, are sulphonyloxy, acyloxy, halogeno and amino groups, tosyloxy and mesyloxy being preferred. Examples describe the preparation of 2 - (1# - t - butoxy - 3aα,4#,5,6,7,7a - hexahydro- 7a# - methyl - 5 - oxo - 4 - indanylmethyl). derivatives of 3-oxovaleric acid ethyl ester, 6- (2 - methyl - 1,3 - dioxolan - 2 - yl) - 3 - oxo hexanoic acid ethyl ester, 5 - [(3,5 - dimethylisoxazol - 2 - yl)methyl] - 3 - oxopentanoic acid ethyl ester and 5-(7,7-o-phenylenedioxy)-3-oxooctanoic acid ethyl ester.
Patent GB-1265891-A (GB)
IPC: B24B31/14
Filed: 1969-05-01
Abstract: 1,265,891. Tumbling. A. JANSEN. 1 May, 1969 [2 May, 1968], No. 22193/69. Heading B3D. An abrasive or polishing element for treating surfaces of mass-produced articles in revolving drums, vibrators or the like has its centre of gravity at one side of the mid-point of its axis of symmetry. The element consists of abrasive and/or polish in conjunction with a binder and may be cut from an extruded strand. The element may have a shape such as shown in the Figure or be of droplet form. The centre of gravity of the element is towards one end of the element so that when a number of elements are used in a revolving drum, the elements do not roll on one another.
Patent GB-1266236-A (GB)
IPC: C25D3/66
Filed: 1969-06-16
Abstract: 1,266,236. Gyromagnetic resonance spectrometers. VARIAN ASSOCIATES. June 16, 1969 [July 1, 1968], No.30345/69. Heading G1N. In a gyromagnetic or other resonance spectrometer, a train of short R. F. pulses (containing a wide range of side-bands) is applied to the sample to excite a train of transient resonances containing a plurality of different transient resonance lines which are detected and fed to a computer which samples, stores, adds and Fourier analyses to produce individual resonance line components for recording, and a resonance signal (which may be from the sample itself or from a reference substance, e.g. TMS, intermixed with the sample) is compared with a reference signal to derive an error signal for controlling an operating parameter of the spectrometer. In the gyromagnetic resonance spectrometer shown in Fig. 1, the carrier frequency of transmitter 4 is chosen to be just off one end of the gyromagnetic resonance spectrum of the sample. The reference input to phase detector 9 may be the carrier frequency (f 0 ) or a tunable sideband (f 0  + f 1 ). Oscillator 16 generates a frequency (f r  ) corresponding to the chosen reference line, which is detected, using the dispersion mode, in a phase sensitive detector 15, the resulting error signal, if any, being used to control the polarizing field strength, the carrier frequency or the tunable side-band frequency. The transmitter pulses may be of 50 microseconds duration and at a rate of 1 a second and are phase-synchronized with the reference oscillator 16. Gate 14 cuts out the initial part of each transient resonance when all the different components are in phase. Various other comparison circuits, which may be used instead of the phase sensitive detector 15 are described with reference to Figs. 4 to 7 (not shown).
Patent GB-1290810-A (GB)
IPC: H02M5/45
Filed: 1971-06-28
Abstract: 1290810 Starting inverters CANADIAN GENERAL ELECTRIC CO Ltd 28 June 1971 30132/71 Heading H2F In a frequency changer comprising an inverter 11 supplied by a rectifier 10, excessive starting current is reduced by charging a capacitor 17 connected across the D.C. side of the inverter 11 via resistance 21 from an auxiliary source 25 of higher voltage than the output of rectifier 10. When capacitor 17 is charged approximately to the voltage of rectifier 10, the inverter 11 is supplied from the output of rectifier 10 and the auxiliary supply 25 disconnected. As described, the inverter 11 is started by closing circuit breaker 20, energizing relay A, contacts Al of which commence charging capacitor 17 via resistor 21. When capacitor 17 is charged to slightly greater than the output of rectifier 10, relay B is energized via diode 27, energizing relay C, contacts C2 of which supply the inverter from the rectifier 10 while contacts C1 release relay A and so disconnect the auxiliary supply 25. The invention prevents excess current due to initial saturation of the transformer 14.
Patent GB-1295811-A (GB)
IPC: G01G/
Filed: 1971-05-17
Abstract: 1295811 Weighing apparatus MICHELIN & CIE (COMPAGNIE GENERALE DES ETABS MICHELIN) 17 May 1971 [15 May 1970] 15349/71 Heading G1W Hydraulic weighing apparatus for measuring the ground load applied by a vehicle wheel includes two sealed deformable pipes 11, 12 between a base 10 and a load-supporting platform 15, the pipes being connected to respective pressure gauges 24 in separate hydraulic circuits so that the sum of the pressure changes in the two circuits is a measure of the load on platform 15. Each of pipes 11, 12 is of rubber reinforced internally with metal cords, e.g. two plies of steel cables, sealed at one end by a ferrule 21 and connected at the other end by a tube 23 to a gauge 24 and a distribution valve 25 of a handoperated hydraulic pump 26. Before use the circuits are pressurized to an initial value. Between weighings the circuits are brought to zero pressure and then returned to the initial value. Marks 30, 31 on the platform 15 assist in positioning a wheel in the median plane of the platform normal to the pipe axes, for accurate weighing.