baber/WOPTO huggingface dataset:
Patent GB-1394453-A (GB)
Title: Optical instruments
IPC: G02B27/64
Filed: 1973-01-17
Abstract: 1394453 Surveyor's level RANK ORGANISATION Ltd 17 May 1973 [26 May 1972 and 17 Jan 1973] 24961/72 and 2463/73 Heading G1F [Also in Division G2] A reflecting system for an instrument e.g. a surveyor's level comprises a rigid, transparent element 1 having a plane upper surface on which rests a film 4 of transparent liquid, the film 4 being thick enough to be affected by gravity. Means 3 direct light 2 through the element 1 so that it is reflected at the upper surface 6 of the liquid film 4 to provide a reflected beam 5. The reflected beam 5 is preferably reflected back through the system to cancel the effect of changes in thickness of the liquid film 4. In one embodiment Fig. 5 an entrance ray 510 is incident normally on a first prism 511, is reflected at faces 512, 514 and passes through a second prism 515 and the base 518 of a cell 517 containing liquid 519. The light is reflected at the under face of the upper surface 520 of the liquid and is returned to the prism 515 which has two faces (not shown) which return the light parallel to but laterally spaced from the incoming beam. This reflected beam passes through a prism 523 being reflected at face 522 to a plate 521 so as to be reflected out normally to face 524 of prism 514. A beam-splitting device is preferably placed in the path of the incident light. A graticule and/or eye piece lens may be provided for viewing the energent light, or a signal may be generated by the position and/or inclination of the energent beam e.g. for automatic position control. Polarizers may be placed in the path of the incident beam and the returning secondary reflected beam. The reflecting surface which returns the light through the system may rotate the plane of polarization through 90 degrees.
Patent GB-1533242-A (GB)
Title: Utilizing radiation-derived electrical signals
IPC: G01J1/42
Filed: 1975-01-21
Abstract: 1533242 Gating photo-detector signals PERKIN-ELMER Ltd 2 April 1976 [21 Jan 1975]  2485/75 Heading G1A In an optical apparatus in which the response of a sample to flashes of radiation is photo-electrically determined, the duration of each flash being short compared with the interval between flashes, a switch is provided which makes the detector output available to a utilisation device only during periods which each include and are longer than a flash duration but which are short compared with the interval between flashes. Fig. 1 shows part of a spectrofluorimeter, in which a pulsed discharge lamp 1 illuminates a sample 2 and the resulting fluorescence is detected by a photo-multiplier 3. The lamp is pulse ON for 20 micro-seconds or so at the mains frequency of 50 Hz; the mains supply 7 charges a lamp capacitor 8, which is discharged through the lamp by a trigger 9 in response to a mains zero-crossing detector 8. This detector also drives a 100 microsecond monostable 12, which in turn changes the bias on an FET switch 11 via a bias control 13. Thus immediately before a flash the FET switch is closed and the detected fluorescence during the flash passes to an amplifier 10; the switch then opens again. By providing this switch, the effects of dark current and phosphorescence are avoided. In Fig. 2 a reference photo-multiplier 18 is provided to measure the lamp intensity via an attenuator 18A. The detector output is fed via a switch 19, controlled as above, to an integrator 16. This integrator, and the corresponding one 10 in the sample channel, integrates the detector signal over eight flashes. A fraction of the value integrated at 16 is tapped off at 21 and subtracted from the sample signal at 22 to cancel the effects of solvent fluorescence or sample cell absorption; the resulting signal is amplified at 23 and ratioed with the reference signal at 24. The ratio is converted to a pulse having a duration related to the ratio; four successive pulses are summed at 25 by counting pulses from clock 26 and displayed at 27 as a measure of fluorescence. An analogue signal may be derived at 28 from the ratio pulses for a chart record 30. A printer 31 can also display and record the results. The apparatus is controlled by a timer 20 and a power supply 17, the latter being equivalent to units 6, 7, 8, 9, 12, 13 in Fig. 1.
Patent GB-763958-A (GB)
Title: Vacuum filling machine
Inventor: MCCARTHY EDWARD JOSEPH
IPC: B65B43/58
Filed: 1954-07-23
Abstract: 763,958. Filling-machines. PNEUMATIC SCALE CORPORATION, Ltd. July 23, 1954, No. 2521/56. Divided out of 763,957. Drawings to Specification. Class 94(1). The machine described is identical with that described in Specification 763,957, but the claims differ.
Patent GB-450691-A (GB)
Title: Improvements in or relating to automatic control of oil and like wick burners
IPC: F23D3/00
Filed: 1936-01-27
Abstract: 450,691. Wick burners. SCANLAN, J., Albert Lamp Works, Bracebridge Street, Birmingham. Jan. 27, 1936, No. 2617/35. [Class 75 (i)] A wick burner suitable for heating chicken houses, incubators, cookers, &c. is fitted with a flame-control member 3 carried by a lever 6 which is pivoted to a pillar 7 on the oil tank and is operated by a member 8 expanding or contracting with temperature variations. The member 8 is carried by an adjustable screwed plug 9a on the oil tank and consists of a chamber formed with corrugated upper and lower surfaces and containing ether. The lever 6 comprises two relatively sliding parts 6a, 6b. The flame-control member may consist of a sliding sleeve or movable side-plates.
Patent GB-489603-A (GB)
Title: Improvements in or relating to calculating slide rules
IPC: G06G1/02
Filed: 1937-01-28
Abstract: 489,603. Calculating - apparatus. FOUNTAINE, C. A. Jan. 28, 1937, No. 2712/38. Divided out of 489,501. [Class 106 (i)] A cursor for a slide-rule of the flat-straight type carries a manually operated counting disc with a notched periphery engaged by a spring pawl to allow of rotation of the disc step by step in one or other direction for each change of characteristic during a series of operations. The cursor is shown in Figs. 6 and 7, applied to a slide rule as described in Specification 489,501, and comprises a transparent plate with a central index line K<1> secured to a lower frame k<5> and to an upper frame K<10>. The plate is formed with an extension K<2> having marked thereon indices or arrows k, k<1> and carrying a rotatable disc or wheel K<3> having a serrated periphery with which engages a spring pawl k<4>. A series of numerals K<4> is marked on the disc extending from + 9 to -9 through 0, and a second series K<5> is inscribed on the disc from 0 to + 5. Other scales may be marked on the back of the disc. Specification 411,090 also is referred to.
Patent GB-229647-A (GB)
Title: Device for securing a proper flow of liquids in purifying centrifugal bowls provided with distributors with double outlets
IPC: B04B1/08
Filed: 1925-01-30
Abstract: 229,647. Aktiebolaget Separator. Feb. 19, 1924, [Convention date]. Density separators. -A centrifugal bowl for the separation or purifying of liquids has liner discs, and a distributor C the base of which has two series of outlet openings. The inner openings F correspond to the openings in the liner discs and the mixture passes through them when the apparatus is employed for the separation of two liquids. In this case a top disc J with a neck is used, and the liquids are discharged through the openings K. L. The radial chamber P between the bowl casing and the distributor base has the effect of forcing most of the liquid to travel through the openings F. This chamber may have no vanes, or may have backwardly extending vanes. Where there is only one liquid to be discharged the top plate N with no neck is used as shown in the right-hand half of the Figure and the distributor base is rotated so that the openings F do not correspond with the holes in the liner discs. The mixture passes from the distributor into the bowl through the passages M and the purified liquid is discharged through the opening L.
Patent GB-708635-A (GB)
Title: Improvements in and relating to adjustable relief valves
Inventor: TOWLER JOHN MAURICE
IPC: F16K17/06
Filed: 1951-02-06
Abstract: 708,635. Fluid-pressure servomotor-control systems ; valves. ELECTRAULIC PRESSES, Ltd. Jan. 18, 1952 [Feb. 6, 1951], No. 2884/51. Class 135 A spring-loaded relief valve in which the spring is adjustably loaded by hydraulic pressure, comprises two coaxially mounted pistons independently movable within a cylinder, one piston loading the relief valve and the other being in hydraulic balance and operable from outside the cylinder, the balanced piston on movement operating valve means to control the admission and exhaust of of pressure liquid to and from the space between the pistons, to vary the pressure therein to vary the relief valve loading and re-establish the normal positional relationship between the pistons. As shown, a relief valve plunger 3 loaded by a spring 5 controls the flow of pressure liquid from an inlet 4 to an outlet 7. The spring is adjustably loaded by a loading piston 9 and a hydraulically-balanced piston 8 having a passage 10 therethrough and operable from outside the cylinder 1 by manual, electrical, mechanical or fluid-pressure means to control a double-headed valve member 19. On movement of the piston 8 towards the piston 9, the head 21 of the valve 19 is unseated to direct pressure liquid from an inlet 25 to a space 11 between the pistons. The piston 9 is thence moved downwards until the head 21 is again seated and the positional relationship between the pistons restored with an increased pressure on the loading spring. On movement of the piston 8 away from the piston 9, the head 20 of the valve 19 is unseated to exhaust pressure liquid from the space 11 through passages 17, 18a in the piston 9 and an outlet 18b. The spring then moves the piston 9 upwardly until the head 20 is again seated and the pressure on the spring 5 reduced. In a modification the valve member 19 is mounted in the piston 9 and the exhaust passages 17, 18a are formed in the piston 8.
Patent GB-1199425-A (GB)
Title: Control of Ultrasonic Energy.
Inventor: WHITTINGTON KEITH RICHARD
IPC: G01N29/26
Filed: 1967-11-29
Abstract: 1,199,425. Ultrasonic inspection devices. T.I. (GROUP SERVICES) Ltd. 26 Nov., 1968 [29 Nov., 1967: 19 Jan., 1968], Nos. 54224/67 and 2914/68. Heading H4D. In a flaw-inspection system transducer elements in an array are sequentially energized to emit pulses of ultrasonic waves which come to a focus on the surface of or within a testpiece, the energizing sequence being such that this focus is moved across the surface or in a path substantially parallel to the surface. For testing a tube T, the array comprises a large number of small elements E arranged in a ring. Each element (a) acts as a point source, (b) may be curved, or flat and provided with a diverging device (lens, pin-hole or mechanical impedance transformer), and (c) when energized by a D.C. pulse resonates to emit a damped wave train. A digital computer C opens gates G to energize the elements (from D.C. source P) in correct sequence, e.g. elements E 1  to E 4  sequentially to produce a beam with focus F 1 , then elements Eg to E 5  sequentially to produce a beam with focus F 2 , and so on. The mean angle of incidence of the beam on the tube is determined by the order of and the intervals between successive energizations and is preferably just less than 30 degrees so that shear waves enter tube T. Echoes received by the elements are fed to a receiving channel via a similar sequential gating arrangement, or other receiving transducers may be used. Flaw echo parameters such as amplitude may be used as input data for computer C for automatically controlling the energisation sequence, and hence the beam incidence angle and focus, so that maximum flaw echo amplitude is obtained, or so that the locations of flaws may be determined, or so that the beam incidence angle may be held at a particular value for test-pieces of irregular cross-section. Tube T is moved axially relative to the ring of transducer elements. Additional rings of transducer elements may be used to provide a cylindrical array. In a simplified scanning arrangement, elements E are energized one at a time at equal intervals and in a progressive rapid sequence around the array, so that the focus is formed at any one time by the pulses emitted from just a few of the more recently energized elements. A solid-state gating system controlled by a clocked shift-register and by the computer C may be used in place of the gating arrangement shown, or for simple energizing sequences computer C may be replaced by a clock generator.
Patent GB-1451001-A (GB)
Title: Sink-float method of contacting liquids and solids
IPC: B01J47/10
Filed: 1974-01-23
Abstract: 1451001 Contacting two miscible liquids with solids E I'DU PONT DE NEMOURS & CO 23 Jan 1974 3161/74 Headings B1F and B1Q In an apparatus for contacting two miscible liquids with solids by the sink-float technique a first liquid is introduced at 17, a second miscible liquid is introduced at 19, a mixture comprising the bulk of the second liquid and a minor proportion of the first liquid are drawn off through 20a, and a liquid comprising the bulk of the first liquid and the rest of the second liquid is drawn off at 18, solid, if heavier than the liquids being introduced at 17 and withdrawn at 20a, with the sweep arms 15 as shown, on if lighter than the liquids the solid is introduced at 19 and leaves via 18, in which case the sweep arms 15 are adjacent the underside of perforate plates 11, the sweep arms 15 periodically being rotated to impell the solid through the apertures of plates 11, which apertures are of a size permitting ready transit of the solid and liquids, e.g. 5-200 times the average particle screen size of the solid, e.g. “"-¢" in diameter. Thus in Ex. IV, organic material is removed from a 20% gypsum slurry formed by lime neutralization of a sulphuric acid solution of organic material by contact with water in apparatus similar to that shown; in Ex. V a first solvent is removed from a polymer which it has swollen by forming a swell it, and contacting the slurry in apparatus slurry with a second solvent which does not similar to that shown with another stream of the second solvent; and in Ex. VI a coating on particles is removed by contact with a solvent.
Patent GB-1345985-A (GB)
Title: Combination aspirator and srpay nozzle
IPC: B05B7/30
Filed: 1972-01-24
Abstract: 1345985 Spray producers ECONOMICS LABORATORY Inc 24 Jan 1972 [17 Feb 1971] 3183/72 Heading B2F [Also in Divisions F1 and F2] A spraying apparatus having a passageway 13 for a carrier fluid, e.g. water, incorporating a venturi 47, and a passageway 56 in communication with the venturi for the aspiration of product, e.g. liquid detergent, comprises a variable nozzle assembly 40 for providing a range of spray patterns to fluid discharged therethrough, the dimensions of the venturi throat and the outlet aperture of the nozzle being such that a constant reduced pressure is maintained in the venturi throat over the entire range of spray patterns. Fluid flow is controlled by valves 15, 55, and the nozzle assembly 40 includes an axially-movable element 42, connected to a stem 18 and disc 17 of the valve 15. A trigger 30 operates both the valve 15 and the nozzle assembly 40 by means of two curved rods 33 joined to the stem 18 of the valve 15. The valve 55 which comprises an axially-movable frusto-conical plunger (70), Figure 4 (not shown) is operable independently of valve 15 by actuation of a trigger portion 77a which passes through an opening in the trigger 30. This causes a spring biased trigger 77 to pivot at 78 and the plunger (70) to be retracted to open the valve 55. In an alternative embodiment, Fig. 5 (not shown), a screw operated -valve (87) controls flow through the venturi which is located in the barrel of the gun. A trigger (101) actuates anaxially movable valve member (97) to control flow of product. The nozzle has a hemispherical member (93) axially adjustable in a nozzle aperture (94).
Patent GB-880725-A (GB)
Title: Apparatus for measuring and recording time intervals
IPC: G01S7/04
Filed: 1958-02-04
Abstract: 880,725. Measuring short time intervals. RANK-XEROX Ltd. Feb. 4, 1958 [Feb. 4, 1957], No. 3607/58. Class 37. [Also in Groups XIX and XL (c)] The time interval between the electrical information pulses IP1, IP2, Fig. 2, from a source 16, Fig. 1, is recorded by applying the first information pulse IP1 to a pulse generator 13 and counting circuit 14 to initiate time displaced timing pulses TP1 . . . TP10, Fig. 2, which are applied to respective gating circuits 15a . . . 15d (four only shown) whose outputs are connected to corresponding point electrodes 11a . . . 11d spaced linearly over a recording medium 10 supported by an earthed metal plate 12, the second information pulse IP2 being applied in parallel to all the gating circuits 15a . . . 15d to produce an output pulse OP2 from the gating circuit at which the second information pulse IP2 coincides with a timing pulse thereby energizing the corresponding electrode to produce an electrical discharge which " marks " the recording medium 10. The first information pulse IP1 may also be applied to the gating circuits 15a . . . 15d to produce a corresponding output pulse OP1. The recording medium 10 may comprise a dielectric material such as polyethylene, cellulose acetate, terephthalate film or plastic coated paper capable of producing an electrostatic charge image which is subsequently rendered visible, after displacement of the medium, by applying a charge pigment or plastic powder to produce a xerographic print, Fig. 3 (not shown), e.g. as disclosed in Specification 672,767. In order to reduce the voltage required to produce the electrostatic charge image, the dielectric medium may be prestressed or precharged. Alternatively, Fig. 5 (not shown), the recording medium 10 may comprise an insulating sheet, e.g. paper, coated with a chemical compound which produces a permanent visible indication in response to the electrical discharge; suitable compounds are silver acetylide, silver nitrate, silver azide, copper acetylide, mercury and silver fulminates and nitrogen tri-iodide. The invention is applicable to (1) pulse radars with PPI or type B displays; (2) time-difference radio navigation systems such as Loran or Shonan and (3) ranging systems utilizing the velocity difference between different types of wave propagation, e.g. light and sound waves or longitudinal and transverse compressional waves. Fig. 4 (not shown) illustrates a pulse radar in which a polar co-ordinate PPI record is produced by an arrangement similar to that described above with reference to Fig. 1, the recording electrodes being mounted on a radial arm which is rotated in synchronism with the aerial beam over a disc of recording medium. In this case the xerographic image may be rendered visible by a radial magnetic brush unit which follows the recording arm.
Patent GB-1343224-A (GB)
Title: Rotary heat-exchanger
IPC: F28D11/04
Filed: 1972-01-26
Abstract: 1343224 Rotary heat exchangers NISSAN MOTOR CO Ltd 26 Jan 1972 [28 July 1971] 3650/72 Heading F4S A heat exchanger comprises a cylindrical rotor in which an annular array of radially orientated hollow blades 15 extend between headers (not shown), each blade being of flatsided cross-section and being so orientated around the rotor axis that in the direction of rotation A of the rotor, the radially outer edge 15c of the blade is in advance of the radially inneredge 15d, 13 are axially spaced, annular fins on the blades. In a modification (Fig. 3), each blade comprises two or more flat-sided tubular sections together forming a blade which is generally concave in the direction of rotation A. In use, the rotor is mounted on a drive shaft 11. A hot or cool liquid flows through the hollow blades and heats or cools an air stream induced by the rotation of the rotor to flow over the rotor blades, the air stream either flowing diametrically across the rotor from one side to the other or flowing radially outwards from the centre of the rotor.
Patent GB-451418-A (GB)
Title: Improvements in or relating to hydraulic valves
IPC: F16K1/12
Filed: 1935-02-05
Abstract: 451,418. Valves. GIBBS, G. J., 7, Lune Street, Preston, Lancashire. Feb. 5, 1935, No. 3673. [Class 135] A valve for controlling the flow in water pipes comprises two fixed aligned pipe sections 3, 18, the space between which is bridged by a valve member in the form of an axially displaceable tube 1 extending at one end into a ported cylindrical grid member 4, with an unobstructed through passage, mounted axially in the pipe section 3, and closed at its inner end by a cap 5, against which the end of the tube 1 adjacent the grid 4 seats to form an additional seal against leakage, when the ports in the grid are closed. Both sides of the cap 5 are of stream-lined or conical form. The valve 1 may be controlled by means connected thereto at flanges 12. Such connection is accessible through spaces between distance pieces 15 connected to flanged members 10, 14 on the ends of the pipe sections. Both flanged members have stuffing boxes 11, 16 and the member 10 supports the grid member 4. The ports 19 of the latter are graduated in length so that reduction in flow is more gradual as the tube approaches the seat 6 on the cap 5. The pipe 18 which is usually though not necessarily, the valve outlet is flared to reduce the velocity of the water after passing the valve. According to the Provisional Specification, the valve may be operated by the automatic control mechanism described in Specification 441,924.
Patent GB-429637-A (GB)
Title: Improvements in and relating to cigarette and like cases
IPC: A24F15/12
Filed: 1934-02-05
Abstract: 429,637. Cigarette &c. cases. BRISLEY, J. W., 174, St. John Street, Clerkenwell, London. Feb. 5, 1934, No. 3700. [Class 18] In a cigarette or like case having a slidable lid, the lid is made in two halves 2, 3, being halved transversely, in such a way that the two halves can be slid towards opposite ends of the case. The halves 2, 3 are preferably provided with a fastening means comprising a spring strip 8, which, by a raised part 10 through engaging in a metal-faced recess 5, holds the halves together when desired.
Patent GB-1413623-A (GB)
Title: Xerographic method and apparatus for producing copies of varying lengths
IPC: B26D5/36
Filed: 1973-01-25
Abstract: 1413623 Variable length xerographic copying VAN DYK RESEARCH CORP 25 Jan 1973 [8 Feb 1972] 3710/73 Heading G2H Xerographic copies of pre-selected length are produced by feeding a paper web 26 through a cutter 38, coupled to a photo-electric sensor 43 and feed rollers 36, 37 with a counter which gives a measure of the length of web fed through the cutter after detection of the leading edge of the web by the sensor. The counter, and hence the length of sheer cut, is set e.g. manually, in accordance with the length of original 14, scanning of the original and movement of the web are co-ordinated, and each cut sheet meets its appropriate image on drum 11 at transfer point 89.