baber/WOPTO huggingface dataset:
Patent GB-1098207-A (GB)
Title: Projection screens and methods of making same
IPC: G03B21/60
Filed: 1966-09-06
Abstract: 1,098,207. Projection screens. INTERNATIONAL STANDARD ELECTRIC CORPORATION. Sept. 6, 1966 [Sept. 8, 1965], No. 39698/66. Heading B5A. [Also in Division G2] In a method of making front or rear lenticular projection screens, a single layer of glass beads 4 are arranged, using air jet 6, on an inclined heat-softenable plate 2 resting on aluminium plate 1, the plate 2 is softened by heating to allow the beads to become partly embedded, a mould of the embedded beads is then made using silicone rubber so that castings in clear resin may be made of the beaded surface. For a rear projection screen, a sheet of unexposed photographic film is secured to the planar face of the casting and is exposed through the lenticules; reversal development then produces a black backing apertured at the foci of the lenticules. A front projection screen is produced by backing the casting with opaque white material. The resin used has a refractive index of from 1À50-1À55, the beads are halfembedded to provide hemispheres projecting from plate 2, and the photographic film is of “ their diameter in thickness. In an alternative method, glass or resin beads are sandwiched between polyethylene sheets which are heated and pressed together by metal plates to provide two moulds.
Patent GB-1485454-A (GB)
Title: Electrical accumulators
IPC: H01M50/529
Filed: 1974-09-12
Abstract: 1485454 Intercell and electrode connections for accumulators CHLORIDE BATTERIES AUSTRALIA Ltd 12 Sept 1974 [12 Sept 1973] 39775/74 Heading H1B [Also in Division B3] An accumulator comprises a container 27 having partition walls 20 which define the cells, a group of positive polarity and negative polarity plates 10 in each cell, and a cast bus-bar 30, 32 connecting the plates of like polarity in each group. A metal mould consisting of two interlocking portions 12, 13 is hooked on to the edge 22 of the container and slots are provided in the base of the mould through which lugs 11 of the plates 10 project. Molten lead is then poured into the channel 14 and flows through apertures 29 in the partition wall to form the intercell connections. The bus-bar may be cast to provide thickened portions 33 to secure the bus-bar to the partition walls. Terminal posts 34 are supported in position in the molten lead during casting and the mould is removed after casting.
Patent GB-871344-A (GB)
Title: Diaphragm pumps
IPC: F04B43/06
Filed: 1957-12-23
Abstract: 871,344. Diaphram pumps. SCHAURTE, P. Dec. 23, 1957 [Dec. 22, 1956], No. 39971/57. Classes 8(1) and 102(1). The generatrix of the floor of the pumping chamber 2 of a flexible diaphram pump bounded by one side of the diaphram 13 and by a lower portion 1 of a housing having an inlet duct 7 closed during the delivery stroke by the central portion of the diaphram and housing a delivery duct 14 controlled by a check valve 16 comprises outer and inner arcs 3, 4 of about equal radii r1, r2. The sector angle α of the outer arc is 135 degrees and that # of the inner arc is 90 degrees. The end 7a of the inlet duct 7 is covered by a sieve 8 to prevent passage of the diaphram thereinto. Flexing of the diaphram 13 is effected by reciprocation of a plunger (not shown) in an oil-filled chamber formed by the upper portion 11 of the pump housing. Specifications 871,343 and 871,345 are referred to.
Patent GB-1519507-A (GB)
Title: Process for the dyeing of textile material
IPC: D06P3/54
Filed: 1975-10-01
Abstract: 1519507 Dyeing textiles with disperse dyes and brighteners CIBA - GEIGY AG 1 Oct 1975 [2 Oct 1974] 40154/75 Headings D1B and D1P Textiles dyeable with dispose dyes or optical brighteners are first pre-swelled by treating with a swelling agent which may be removed and is then dyed with a disperse dye in presence of 0.1 to 2g of carrier per litre aqueous dyebath. Polyesters and polyamides are treated with chlorinated aliphatic hydrocarbons e.g. methylene chloride at 20- 80‹C followed by dyeing with disperse dyes or brightening with dispersed brighteners.
Patent GB-1407986-A (GB)
Title: Method and apparatus for determining radiation transmission characterisitcs of a generally transparent medium
IPC: G01J3/44
Filed: 1972-08-31
Abstract: 1407986 Investigating liquid suspensions EASTMAN KODAK CO 31 Aug 1972 [31 Aug 1971] 40343/72 Heading G1A In an apparatus for determining the size frequency distribution of particles dispersed in a liquid flowing through a sample cell 19 by spectrogoniophotometric analysis, radiation from a lamp 21 passes via a rotating spectrally variable filter 23, an adjustable slit aperture Fig. 1 (not shown) and the sample cell 19 to be received by a number of angularly spaced detectors 31 for receiving the refracted and diffracted light. A further detector 21 is used to provide a reference signal which is used for comparison with the signals from the detectors 31 and in a feedback loop for maintaining the lamp's intensity constant. From the relative intensity values of the received radiation at various angles to the incident radiation for particular wavelengths, the size frequency distribution of the particles may be determined by reference to predetermined empirical data. The detectors 31 are sequentially operated by means of a switching circuit 45 controlled by a scanning circuit 47 which commences scanning whenever it receives a signal from a further detector 61 which receives light from a further source 71 passing through an aperture 59. The series of signals, after logarithmic amplification and after passing through a differential amplifier 41 may be fed to an XY record on which recording is initiated when it receives a signal from a detector 64 receiving light from a source 72 passing through an aperture 63, or they may be fed with signals from a detector 58 (associated with a series of apertures 56 corresponding to different wavelengths) to recorder 50 to produce several displays simultaneously Fig. 4 (not shown) including size frequency plot. Alternatively the signals from detector 58 may be fed separately to the recorder 50 as a separate operation.
Patent GB-1454627-A (GB)
Title: Optical light modulators
IPC: G02F1/01
Filed: 1974-09-17
Abstract: 1454627 Controlling light INTERNATIONAL BUSINESS MACHINES CORP 17 Sept 1974 [28 Dec 1973] 40380/74 Heading G2F In a light modulator a material exhibiting Zeeman splitting of atomic spectral lines is subjected to a circularly polarized driving light beam to alter the population densities in the Zeeman magnetic sublevels of the ground and excited states, whereby the rotation of the polarization plane of an incident main light beam may be controlled. The material may be an alkali metal vapour or gas, e.g. K or Rb, and is followed by a plane polarizer for providing intensity modulation. The frequency of the driving beam is resonant or nearly resonant with the two working levels of the atomic states of the vapour or gas, and the frequency of the main beam is substantially different therefrom. If - other atomic levels adjacent the working levels are linked thereto by #<SP>+</SP> and #<SP>-</SP> transitions, the two frequencies may be extremely different e.g. a weak visible light beam controlling a main 10Á CO 2  laser beam. The energy in the main beam may be more than 1000 times that in the driving beam. If the driving beam is applied adiabatically (i.e. the pseudomoment of the near-resonant transition follows the effective field of the driving pulse) the arrangement acts as a shutter, which may open in less than 1 p sec, or an amplitude modulator. If a non-adiabatic driving pulse is used, the rotation # c  of the plane of polarization of the main beam is an oscillatory quantity, the frequency being a function of the amplitude of the driving field (up to 3 x 10" Hz), so that the polarizer transmits a pulse train of controlled frequency.
Patent GB-1521706-A (GB)
Title: Haymaking machines
IPC: A01D43/04
Filed: 1975-09-02
Abstract: 1521706 Hay making machines JOSEF BAUTZ GmbH 2 Oct 1975 [4 Oct 1974] 40390/75 Heading A1F A processing device 2 having implements 21 for breaking up or tedding mown material 19, 20 is coupled to a mobile machine frame 3 of a mower unit 1 by a projecting arm system 23, 29 which enables the processing device 2 to be carried in a transport position, Fig. 2, behind the mower or swung and locked in a working position, Fig. 1, laterally of the mower. The processing device is carried in the transport position by its pivot pins 32, 33 in bearing boxes 34, 35 on the wheel supports 17 of the machine frame 6 and in the working position by the pivot pin 32 seated in a bearing box 38 in the support 17 of the wheel 4 and by a wheel 37 provided on the device itself. The support arm 23 is pivotable about a vertical shaft 26 on the device 2 and about vertical and horizontal shafts 25, 24, on the machine frame 3, swinging and lifting of the device 2 being achieved by means of a lifting cylinder 27.
Patent GB-847542-A (GB)
Title: Improvements in or relating to studio lights
Inventor: CLEMENTS MAURICE
IPC: F21V11/18
Filed: 1957-12-31
Abstract: 847,542. Lantern shutters. GENERAL ELECTRIC CO. Ltd. Nov. 14, 1958 [Dec. 11, 1957], No. 40427/57. Class 75(4). A studio light in the form of a lantern from which light is emitted through a lens has at least one pair of doors foldable over the front of the lens, the doors being carried on a mounting ring which is rotatable about its axis by rack and pinion means. operable from a remote point. The doors 7 are attached bv friction-lockable hinges 8 to the mounting ring 9 which fits into the semicircular members 5 and 6 attached, the former by spot welding and the latter by screws, to the flange 3 on the lens ring 1. Rotation of the mounting ring is effected by rotation of the pinion wheel 13 attached to the spindle 11 which is carried by a bracket 10 fixed to the half-ring 5. The pinion wheel engages either with slots cut into the mounting ring 9 or, as shown, with a rack 14 formed of helically overwound steel cable and attached to the mounting ring. Remote operation is achieved by the use of a pole whose end has a socket engageable with the head 12 of the spindle. The doors, of which the ring may carry an additional pair arranged to be foldable about axes perpendicular to those of the doors shown, may also be opened and closed by the use of a pole, for which purpose the doors and the pole may each carry means engageable with the other. Specification 847,531 is referred to.
Patent GB-1487199-A (GB)
Title: Quadrupole field mass analyser
IPC: H01J49/42
Filed: 1974-09-18
Abstract: 1487199 Mass spectrometers MAX-PLANCK GES ZUR FORDERUNG DER WISSENSCHAFTEN EV 18 Sept 1974 [24 Sept 1973] 40645/74 Heading H1D A mass spectrometer comprises grid electrodes 24, 26 accelerating ions emitted from a sample 12 through an annular entrance aperture 20 into the space between coaxial cylindrical electrodes 22, 30 which form the ions into a parallel beam with an annular cross-section. A lens assembly 37, 38, 39 divides the annular beam into component beams arranged around a circle and focuses those in a certain energy range at a diaphragm 40. The transmitted ions of each component beam pass into respective quadrupole electrode assemblies 42, of which Fig. 4 (not shown) is a cross-section, and those passing through the quadrapole assemblies are collected and directed to a detector 52 by coaxial cylindrical electrodes 48. Those quadrupole electrodes lying between component beams can be common to two sets of quadrupoles.
Patent GB-1281912-A (GB)
Title: Pickup devices
Inventor: WATANABE SHOJI
IPC: H04R23/00
Filed: 1969-08-14
Abstract: 1281912 Photo-electric pick-up TOKYO SHIBAURA ELECTRIC CO Ltd 14 Aug 1969 [15 Aug 1968(2)] 40673/69 Heading G1A In a pick-up in which displacement of the stylus modulates a light beam to produce, via a photoelectric converter, an A.C. output, static displacements are also measured by measuring the mean current in the photo-electric converter in order to indicate stylus side pressure and/or tracking weight. As described light from a lamp (11) Fig.1 (not shown) is modulated by light controlling plate members (17a, 17b) and falls on the photo-transistors (12a, 12b) to provide stereophonically related signals. The photo-transistors 12a, 12b, Fig.2 are connected in series with resistors 18a 18b across a source 19 to provide the audio output signal at terminals 20a and 20b. In addition an ammeter 22 is connected across  a portion of the load resistors to indicate displacement due to side pressure. The side pressure signal may be utilized to control a motor applying an opposing side thrust to the pick-up. Alternatively, or in addition, stylus pressure can be measured by measuring the current through one photo transistor, Fig.3 (not shown), responsive to light modulated by either vertical or horizontal movement of the stylus. Placing the stylus on a stationary record will indicate static pressure while with the record rotating the change in modulation will indicate side thrust, with an A.C. component providing the recorded signal.
Patent GB-1151938-A (GB)
Title: Method of Producing a Porous Electrode Material
IPC: H01M4/88
Filed: 1966-09-13
Abstract: 1,151,938. Fuel cell electrodes. ALLMANNA SVENSKA ELEKTRISKA A.B. 13 Sept., 1966 [14 Sept., 1965], No. 40870/66. Heading H1B. [Also in Division C7] A porous electrode, preferably for use in fuel cells, is made by bringing the pores of a porous electrically conducting body, such as a single- or double-layered porous nickel electrode, into contact with a platinum group metal compound which is decomposable in gaseous state, such as Pd, Pt, Rh, Ir, Ru acetyl acetonate or carbonyl chloride, and heating the porous body at least to the decomposition temperature of the compound e.g. to 275-400‹ C. Examples are given of impregnating a porous nickel electrode under vacuum with a saturated solution of Pd acetyl acetonate in benzene or Pt carbonyl chloride in CCl 4 , drying and heat treating at 275‹ C and 350‹ C. respectively in air. In one example, 10 atom per cent of the Pd acetyl acetonate may be replaced by Pt acetyl acetonate, the heat treatment being at 400‹ C. The electrode may consist of a 1À4 mm. thick coarse porous layer (pore size between 0À5 and 100 microns) containing besides Ni, Co, Fe, W, Mo, Ti, Ta and C, and a 0À3 mm. thick fine porous layer (pore size between 0À2 and 20 microns) containing, besides the materials of the coarse layer, Al 2 O 3 , MgO, ZrO 2  and ThO 2 . The platinum group metal deposited may be 0À001-1% of the electrode.
Patent GB-1141716-A (GB)
Title: New polycarbonates
Inventor: EVANS SHEILA ANN
IPC: C08G64/10
Filed: 1966-09-14
Abstract: 1,141,716. Tetrafluorophenylene bis-(chloroformate). MONSANTO CHEMICALS Ltd. 14 July, 1967 [14 Sept., 1966], No. 41017/66. Heading C2C. [Also in Division C3] Tetrafluorophenylene - 1,3 - bis - (chloroformate) is made by reacting tetrafluororesorcinol with phosgene in the presence of N,N - diethylaniline and anhydrous ether.
Patent GB-1365612-A (GB)
Title: Multiple component metering and mixing device
IPC: B29C48/58
Filed: 1972-09-05
Abstract: 1365612 Mixing screws DOW CORNING CORP 5 Sept 1972 [15 Sept 1971] 41046/72 Heading B1C [Also in Division B5] An apparatus for mixing liquid components of e.g. synthetic plastics or rubbers see Fig. 1 (not shown) comprises a screw mixer 21, Fig. 6, supplied by metering screw conveyers (14, 17) vertically arranged in the respective component containers (15, 18) and driven by a motor (11) through a gear box (12) and flexible drives (13, 16). The metering and conveying screws 23, Fig. 3, fit closely in bevels 24 which may be of nylon or other low friction material, and have an input slot 27 in the lower end which extends axially at least between two adjacent flights. The flight depth is greater in the input section 28 and the base 37 of the leading edge of the flight has a greater radius than that 38 of the trailing edge. The conveyer for the major component has a three-start screw to increase metering capacity by enabling a steeper pitch angle to be used. The mixing screw 41, Figs. 5 and 6, has a minor component input section 56 with inlet 22 and of shallow flight depth, a major component and mixing section 57 with inlet 19 and of greater flight depth, and an output compression section 58 of shallow flight depth than the mixing section. The relative depths of sections 56, 57 prevents backflow from inlet 19 to inlet 22 in case the latter supplies a curing agent. Turbulence is provided by the shoulder between the mixing and compression sections 57, 58 and by giving the base of the leading edge 59 of the flight a greater radius than that of the trailing edge 61. Preferably the screw has more than one start. The screw is driven from gear box 12 through keys 43; the barrel 51 is detachably secured to the gear box by spring clamps 53 and has an outlet which may be a nozzle 63 adapted to cooperate with the inlet port of an injection moulding machine. Proportioning of the components may be changed by altering the ratios in the gear box 12, exchanging the conveying and/or mixing screws, or driving the conveying screws by separate variable-speed motors.
Patent GB-972471-A (GB)
Title: Collapsible rigid structures
IPC: E04C3/00
Filed: 1960-11-29
Abstract: 972,471. Hoses; flexible members adapted to form struts. W. SCHUSTER. Nov. 29, 1960 [Dec. 4, 1959], No. 41068/60. Headings F2K and F2P. [Also in Divisions A4 and E1] A collapsible rigid structure comprises a number of pressure elements 2 threaded by aligned passages 11 on a flexible inelastic tension element 1, such that when the element 1 is tensioned the end faces of the pressure elements are held in tight engagement to form a rigid structure, the passages 11 being offset from the centre of inertia of the pressure element faces. The pressure elements may be sectangular, I, U or polygonal cross-section and may have aligning dowel means 15 (Fig. 15) and/or aligning collars 13 on the tension element. The passages 11a may be elongated and the tension element retained by pins 36 (Fig. 8). In the embodiment shown in Fig. 12 the passages are open sided and tension member retained by cross-pins 41. The end faces of the pressure elements may not be parallel and the tension member may be of wire, chain, strip or plastic. It is stated that the invention may be used for posts, rods, sticks, tent poles, medical probes, scaffolding, tunnel props or flexible tubes. Specifications 737,014 and 972,72 are referred to.
Patent GB-890928-A (GB)
Title: Improvements relating to motor vehicles with oleo-pneumatic suspensions
IPC: B60G17/04
Filed: 1960-11-30
Abstract: 890,928. Clutch and change-speed control. DAIMLER-BENZ A.G. Nov. 30, 1960 [Dec. 2, 1959; April 30, 1960], No. 41181/60. Class 80 (2). [Also in Groups XXXII and XXXIV] A vehicle having hydro-pneumatic suspension with at least one level regulating valve 9, 11 to each axle has one or more control valves 23, 16, 20 operating devices such as the clutch, front brakes 14 and rear brakes 18, the control valves each being connected to one or a pair of the pressure oil chambers of the spring elements 3 or to the pressure oil conduits from the regulating valves supplying the spring elements. As shown in Fig. 1, hydraulic fluid from reservoir 5 is pumped by pump 4 into pressure accumulator 7 from which conduits 8 lead to the height regulating valves 9, 11 from which further conduits 12, 10 supply the hydraulic fluid chambers of the spring elements 3. The clutch operating valve 23 is connected by conduit 26 to rear suspension supply conduit 10 and brakeoperating valves 16, 20 are connected to the front suspension supply conduit 12 by conduit 17. Exhaust fluid from the operating valves passes through conduit 27 into return conduit 13 from the suspension to reservoir 5. In alternatives, with the valves arranged in the preferred form of a block (Fig. 4, not shown) the front spring elements supply the front brakes and clutch and the rear spring elements supply the rear brakes and in Fig. 2 (not shown) valves for the front and rear brakes only are provided connected respectively to the front and rear suspensions so that the braking is dependant on the axle loading. In a further alternative the operating valves may be connected to an auxiliary accumulator connected in turn to conduit 10 or 12 leading to the spring elements. The operating valve, Fig. 3, comprises a housing 41 with an hydraulic fluid inlet 44, a pressure outlet 48 to the device being controlled and an exhaust outlet 45. Within the housing are an axially adjustable fixed valve body 42 with a seating for a ball 53, a valve body 43 movable under the influence of a foot pedal and a spring- loaded lever member 46 which is preferably of disc form with axial drillings 55 and seatings for ball 53, annular resilient seal 56 and spring 47. Normally, ball 53 is urged by spring-loaded member 46 against its seating on body 42 to close the fluid inlet path through drillings 51, 52 while there is free communication between outlets 48 and 45 round and through member 46 and through drillings 58, 59 in body 43. When the body 43 is moved to the left by the foot pedal drilling 58 and hence outlet 45 are closed by resilient seal 56 and lever 46 pivots about end 57 allowing ball 53 to leave its seat and oil to pass from the inlet through the drillings 51, 52, 55 into the outlet 48. If the pedal is slowly released the inlet is cut off before the exhaust is opened again.
Patent GB-1513804-A (GB)
Title: Elevator control apparatus
IPC: B66B1/20
Filed: 1975-10-08
Abstract: 1513804 Elevator system HITACHI Ltd 8 Oct 1975 [11 Oct 1974] 41285/75 Heading G3N A multi car elevator system detects the number of would-be passengers PN waiting at each floor HF and forecasts the resulting cage calls when the passengers enter the lift car on the basis of a known pattern to plan the lift operating strategy before the passengers enter the lift car. A hall at each floor has a hall lantern HL indicating car arrival, hall call button HB and elevator door HD. The number of waiting wouldbe passengers PN is detected by dividing the floor into mat areas big enough to be occupied by one person only and providing a switch under each mat so that the number of switches activated corresponds to the number of passengers. Alternatively, the hall is scanned by TV camera ITV and the image analyzed, persons entering the hall are detected by photo-cells EL, or wave transmitter T and receiver R are used to detect passengers PN Figs. 3 and 4 (not shown). The detected number passes to a cage call forecasting circuit Figs. 5 or 8 (not shown) using variable resistors set in dependence on the nature of the destination floors (e.g. lobby), time of day, passenger history etc.  The forecasting circuitry can be analog Figs. 5- 8 (not shown) or digital Figs. 9-18 (not shown) using a digital computer. A forecast waiting time can be communicated by a display or accoustically (Fig. 15) and time used to allocate cars. An interlock circuit assigns a hall call to a car in which the hall call to a car coincides with a cage call, in priority over the other cars (Figs. 16 and 17).