baber/WOPTO huggingface dataset:
Patent GB-651076-A (GB)
Title: Improved apparatus for the measurement of colour temperature and colour emissive power
IPC: G01J5/60
Filed: 1948-02-04
Abstract: 651,076. Optical pyrometers. JAGERSBERGER, A. Feb. 4, 1948, No. 3316. Convention date, Feb. 4, 1947. [Class 97 (iii)] In an optical pyrometer, the brightness of the radiator is matched to that of the comparison source in two spectral bands. Light from the radiator S, Fig. 1, is focused on the plane of the filament G of the pyrometer lamp by means of a lens L1, a light attenuation device being interposed in the optical path by means of which the intensity of the radiator may be diminished, and the filament G is observed against this background image by means of lens L2, L3 through a filter combination F1, F2 having a sharp dividing edge T which provides two coloured images of the filament and its background. With, for example, red and green filters the temperature of the filament G and the intensity of the radiated light are varied by rheostat W and light attenuation device K respectively until the image of the filament disappears against both the red and green backgrounds, Fig. 4a. Figs. 4b and 4c show equalization for the red spectral band with the colour temperature of the filament higher than and lower than that of the radiator, respectively, in the green band. In the embodiment shown in Fig. 8 the rheostat W and light attenuation device are each provided with a friction or bevel gear Z2 and Z3 rotatable by a pivotally-mounted bevel spur Z1 having a knob E and two sets of filter combinations, e.g. Red-Green FI and Red-Blue FII, are provided, the desired combination being moved into position by a lever H. With matching in both colour fields the colour temperature of the radiator S may be deduced from the current flowing in the filament G and the emissive power of the radiator from the position of the grey wedge W. If the energy distribution in the spectrum of the radiator is known, a suitable colour filter FS may be inserted in the incident beam whereby the colour temperature measured is equal to the true temperature of the radiator. In a modification the rays from the comparison source are reflected into the optical path of the pyrometer.
Patent GB-266325-A (GB)
Title: Improvements in radio receivers employing four electrode valves
IPC: H03F1/13
Filed: 1927-02-05
Abstract: 266,325. Radio-Industrie, and Compagnie pour la Fabrication des Compteurs et MatÚriel d'Usines a Gaz. Feb. 22, 1926, [Convention date]. Thermionic amplifiers and heterodyne receivers.-In a wireless receiver employing the or more valves of the double-grid type, impedances are inserted in the plate circuit and the inner-grid circuit, one or both of which are in the form of tuned circuits, with the result that the electrostatic reactions of the plate and inner grid on the outer grid annul each other. As shown in Fig. 2 the input circuit O1 is connected to the outer grid G2, an impedance or resistance R is inserted in the circuit of the inner grid G1, and a tuned circuit O2 in the plate circuit, or vice versa. Owing to the phase opposition of the currents to the inner grid and the plate, the electrostatic reactions of these electrodes on the outer grid oppose each other. A variable condenser C may be connected between the two grids. In the application to a supersonic heterodyne receiver shown in Fig. 3, tuned circuits O2, O3 are connected respectively in the circuits of the plate. P and the inner grid G', the voltages across the circuit O2 being applied through a condenser C4 to the inner grid of an oscillating detector valve 2, the local frequency being determined by the tuned circuit O4 connected in the inner-grid circuit and coupled to the plate coil L5. The beat frequency is passed to the grid of the detector valve 3 with the phones T in its plate circuit. The Specification as open to inspection under Sect. 91 (3) (a) states that the two tuned coils O2, O3 may be arranged with their coils coupled or forming one continuously-wound coil; and this coil may be inductively coupled to the input circuit of the next valve. The two condensers may be replaced by a single condenser which may be connected across the primary or secondary coil. This subject-matter does not appear in the Specification as accepted.
Patent GB-451259-A (GB)
Title: Improvements in or relating to means for measuring the flow of fluids
IPC: G01F1/00
Filed: 1935-02-01
Abstract: 451,259. Indicating-apparatus. ELECTROFLO METERS CO., Ltd., and ENGEL, F. V. A. E., Abbey Road, Park Royal, London. Feb. 1, 1935, No. 3328. [Class 106 (iv)] Two movements relating to the flow of fluids are combined to give a result by an apparatus comprising a member moved along a rectilinear path in accordance with one movement, and a second member pivoted on the first member and so moved that the angle between the second member and the rectilinear path is a function of the second movement, the result being determined by the position of a third member constrained to follow the point of intersection of the second member with a line transverse to the rectilinear path. In the form shown in Fig. 2, a lever 20 is pivoted to a block 14 mounted on a screwed rod 11. A pin 40 is slidable in the lever and is also constrained to move in a vertical path 41. The distance x is thus equal to a x tan alpha, or, approximately, to a x alpha. The distance a may be determined by a float 1 connected to the rod 11 by a cord 3 and a pulley 10 and alpha may be varied with a difference in head measured by two floats 1, 2 connected to a differencing mechanism 7 which rotates a square shaft 27 having a pulley 30 connected by a cord 31 to a pulley 32. The pulley 32 is mounted on the pivot 21 of the lever 20 and the pulley 30 is slid along the square shaft 27 by guides 28 secured to the block 14. If the position of the float 1 is denoted by h2 and that of the float 2 by h1, then the position of the pin 40 corresponds to h2 (h1-h2) and this quantity may be indicated by a pointer 45. Either the screw-thread 11 may be modified, or a " squaring " cam inserted between the float 1 and the pulley 10, so that the distance a is proportional to h<2>2, the position of the pin 40 then corresponding to h<2>2 (h1-h2). The square root of this quantity may be determined by the methods described in Specifications 409,218, [Group XXXVI], and 448,332, [Group XIX]. A cam may be formed on the pulley 26 so that tan alpha is kept proportional to h1-h2,
Patent GB-737259-A (GB)
Title: Improvements in or relating to eyelets
IPC: A43C3/00
Filed: 1951-02-20
Abstract: 737,259. Eyelets. TUCKER EYELET CO., Ltd., G., and HENSHAW, J. N. May 14, 1952 [Feb. 20, 1951], No. 3409/54. Divided out of 737,161, [Group XXII]. Class 89(1). An eyelet comprises a tubular metal body 31 having a head 33 covered with celluloid or like thermoplastic material 45 applied by a moulding- on process. The bore 44 of the body converges towards the head which has a flat end face 41 and a tapered side wall 32. A narrow annular ledge 43 is formed by a recess in the head, the neck W across the body between the ledge and the base of the wall 32 forming a key to hold the celluloid to the body. Specifications 446,169, [Group VII], and 737,161, [Group XXII], are referred to.
Patent GB-1059686-A (GB)
Title: Improvements in or relating to the preparation of anthraquinone
IPC: C07C13/58
Filed: 1965-01-26
Abstract: Anthraquinone is made by oxidizing 9,10-dihydroanthracene in the liquid phase with a gas containing free oxygen at a temperature of 105-150 DEG  C. and at a pressure of about atmospheric to 2000 p.s.i.g. in the presence of a basic compound and recovering the anthraquinone. Preferably the 9,10-dihydroanthracene is formed by hydrogenating anthracene or a crude mixture containing anthracene carbazole and phenanthrene. Preferred bases are the alkali metal hydroxides, carbonates, bicarbonates and di-and tri-alkali metal phosphates.
Patent GB-1164392-A (GB)
Title: Improvements relating to X-Ray Television Cameras
Inventor: KLEM ADRIANUS
IPC: H04N5/32
Filed: 1967-01-24
Abstract: 1,164,392. Recording images from a fluorescent screen. OPTISCHE INDUSTRIE " DE OUDE DELFT " N.V. 24 Jan., 1967 [25 Jan., 1966], No. 3485/67. Heading H5R. In an X-ray television camera comprising a T.V. pick-up tube, a fluorescent screen adapted to be positioned in the primary X-ray beam and an optical system to form on a light sensitive surface an image of said screen which is recordable by the photocathode or target of said T.V. pick-up tube, a light transparent clear plate is positioned in close parallel relation to the screen on that side of the screen which is remote from the X-ray source, said plate being of a material such that secondary X-rays back scattered from parts of the camera lying behind the plate are completely absorbed thereby. As shown in the figure the rays 13 from a source 12 pass through diaphragm 14 and body 15 to produce an image on fluorescent screen 10 which is situated immediately adjacent the transparent lead glass plate 17, the image is transmitted via mirror 11 to the photocathode of image intensifier 2, from where it passes via optical system 3, 4 and mirror 5 to a television pick-up tube 6, e.g. of the image orthicon type. The screen 10 and its associated protective cover 8 and stray radiation absorbing plate, e.g. Bucky grid 9, together with the mirror 11 may be supported by a light-tight hood 7 which is rotatable about the optic axis of the camera. If desired, the image may be recorded via an optical system directly on the photocathode or target of the pick-up tube. The plate 17 may have a thickness such that primary rays incident thereon are only partially absorbed.
Patent GB-281899-A (GB)
Title: Means for efficient regulation of material on to screening and sorting surfaces and more particularly feed regulating means for rotary grizzlies for screening fuel
IPC: B07B1/00
Filed: 1927-02-08
Abstract: 281,899. Ruthven, R. H. Feb. 8, 1927. Feeding-devices for granular and like materials.-In a feed-regulator for sorting or screening devices comprising an apron consisting of depending rods or fingers pivoted on an horizontal axis, the lower ends of the rods or fingers are curved towards the oncoming material which is to be screened so as to retard any excessive rush of material and deflect it backwardly towards the shoot as it slides off the apron. The apron may be in independently swinging sections, and means may be provided for controlling the extent of the rearward swing of the apron. As shown, the bars a forming the swinging apron are suspended from a tie-rod b attached to the side walls of the trough c which guides the material to be screened from the hopper d to the intermeshing rollers e of the sorting or screening device. The lower ends of the bars a are curved towards the inlet end of the trough, and the extent of the backward swing of the bars a under a rush of material down the shoot is determined by a stop consisting of a tube f clamped tightly between the shoot walls by a tie-rod g. By varying the eccentricity of the tube f with respect to the rod g the maximum rearward swing of the bars a can be varied. Or the rod g may pass through longitudinal slots h in the shoot walls so that the tube f and rod g can be adjusted. The invention is particularly applic. able to rotary grizzlies for screening fuel.
Patent GB-211158-A (GB)
IPC: H01H71/12
Filed: 1924-02-11
Abstract: 211,158. Voigt & Haeffner Akt.-Ges. Feb. 10, 1923, [Convention date]. Switches, partly electromagnetic; thermal switches. -In a switch which is normally operated by the expansion of a thermal element through which the excess current flows, very heavv short-circuit currents which would fuse the thermal element cause the electromagnetic attraction of an armature and the consequent short-circuiting of the thermal element, while, at the same time, the armature operates the switch to the off position. In the arrangement shown, normal excess currents cause the expansion of the current-carrying element a which presses upon the lever h pivoted at g and allows the contact-member f to assume the off position. Very heavy currents magnetize the core b surrounding the element a and attract the armature c thereby short-circuiting the element a through the shunt e and at the same time acting through the link k to break the circuit.
Patent GB-1527842-A (GB)
Title: Protective helmets
IPC: A42B3/22
Filed: 1977-01-28
Abstract: 1527842 Crash helmet C PIECH 28 Jan 1977 [30 Jan 1976 2 March 1976 23 Aug 1976] 03572/77 Heading A3V A crash helmet has a shell 1 a cover 11  and a visor 5 mounted for movement between the cover 11 and shell 1. Sealing means 13, 15 are provided and a peg on the visor may locate in one of a series of holes in the shell (not shown) to hold the visor open at intermediate positions against the action of a spring.
Patent GB-375729-A (GB)
Title: Improvements in magneto ignition apparatus
IPC: F02P1/00
Filed: 1932-02-06
Abstract: 375,729. Magnetos. BOSCH AKT.- GES., R., 4, Militõrstrasse, Stuttgart, Germany. Feb. 6, 1932, No. 3585. Convention date, Feb. 21, 1931. [Class 35.] The rotary magnet 1, stationary armature 9 and interrupter of an ignition magneto are contained in a compartment completely separated from the distributer compartment by a wall 11, the interrupter cam 40 being mounted on the distributer shaft 12. The object is to prevent ozone or carbon dust from the distributer reaching the interrupter. The shaft is packed in the wall 11 by felt rings 6. The distributer shaft 12 is hollow and through it passes a pin 19 connected at one end with the distributer finger 21, the other end bearing against a leaf spring 22 connected to one end of the high tension winding 8. The supporting plate 23 of the interrupter is secured to a collar 24 which can rotate in a bearing ring 25 on the wall 11. The plate carries a stationary contact and a rocking lever 27 carrying the movable contact 28. The plate has two slots 30 through which pass screws 31 screwed into the bearing ring 25. Adjustment of the plate is effected by a plate lever 35 connected to a handle 36 through a shaft 37. The plate lever 35 has a slot 50 through which passes the shaft 7 and a slot 38 in which engages a pin 39 on the interrupter plate. The conductor 32 connecting the condenser 29 to the terminal 33 of the moving contact 28 has riveted to it a spring 34 which makes contact with the screw 31 in the fully retarded ignition position and so short-circuits the magneto. The cam 40 is lubricated by a pad 41 carried by a spring 42. The stationary contact of the interrupter is mounted in a holder 47 which can be adjusted within a channel formed by bent over flaps 44, 45 at the top of the plate 23. The flap 45 in conjunction with the terminal 49 of the coil forms a safety spark gap.
Patent GB-1389051-A (GB)
Title: Magnetic tape recorder
IPC: G11B15/32
Filed: 1972-01-26
Abstract: 1389051 Magnetic tape recorders SUEDATLAS-WERKE GmbH GES FUR TEXTVERARBEITUNG 26 Jan 1972 [28 Jan 1971] 3597/72 Addition to 1309818 Heading G5R The tape recorder reel drive arrangement of the parent Specification is modified by rigidly mounting a belt driven pulley wheel 4 and an integral sleeve like friction wheel 36 on a spindle 37 such that when the spindle is supported in a bearing sleeve 38 on a lever 7, the lever may be rocked either to bring the spindle into contact with a wheel 11. The contact being established through a cut-out portion 39 of the sleeve 38 as illustrated, or the lever may be rocked to bring the wheel 36 into contact with a wheel 14 for driving a further wheel 12 (as in Fig. 3, not shown). The tape reel spindles 8, 9 may therefore be selectively driven slowly/quickly for winding/re-winding tape.
Patent GB-1183711-A (GB)
Title: Improvements in or relating to Unit Shop Fronts.
Inventor: EUSTACE KENNETH
IPC: E06B1/62
Filed: 1966-01-27
Abstract: 1,183,711. Shop fronts. EUSTACE & PARTNERS Ltd. 27 April, 1967 [27 Jan., 1966], No. 3667/66. Heading E1R. A unit shop front comprises a main frame of fibre glass, aluminium, wood or plastics material, having a preferably vertical rail 3 or stile of U-shaped cross-section the mouth of which faces outwardly so that the arms of the U can engage between them a fixing piece 4, secured to the pillasters 2 and shown as of U-cross-section having a raised base 4 defining two channels 7 and having a threaded insert 5, e.g. of steel, on the raised base portion, and the element 3 of the frame being provided with adjuster blocks 9 forming by recesses in each, a T-shaped slot to receive an adjuster screw 10, whose head 11 is held captive but is accessible to a screw driver through a hole in the base 3 of the element. The element 4 may be a simple U-section, two standard wedges being inserted one from each end of the rail and which extend the whole length thereof abutting each other along their hypothenuse faces which are ridged and have a longitudinal slot parallel to the longitudinal axes of the wedges through a bolt may be inserted for fixing the frame and fixing piece together as an alternative to fixing by glue.
Patent GB-238467-A (GB)
Title: Improvements in or relating to reflex cameras
IPC: G03B19/12
Filed: 1925-02-10
Abstract: 238,467. Wolny, V. Feb. 10, 1925. Cameras, collapsable reflex, - A folding reflex camera has two collapsable solid side-walls B, C, each made of three or more sections b<1>, b<2>, b<3>, c', c<2>, c<3>, hingedly interconnected, the section or sections b<2>, c<2>, between the two end sections of each side wall taking up a position between said end sections on folding up the camera. In the form shown, the hinged connections of the end sections to the objective board and camera back are provided with springs, tending to open the camera out, the springs l, n at the back being stronger than those. k, m at the objective board end to facilitate locking in the extended position, which is effected by the engagement with members h on the sections b<2>, c<2> of a supporting frame i for the reflex mirror frame. Locking may also be effected by the mirror frame itself. The side walls then bear closely against the frame a of the ground glass screen, their connecting hinges d, e, f, g, being all on the inside.
Patent GB-1188062-A (GB)
Title: Loose Covers for Chairs and the like
Inventor: ANDREW IVY
IPC: B60N2/60
Filed: 1968-01-24
Abstract: 1,188,062. Loose covers for chairs. CUSTOMAGIC MFG. CO. Ltd. 5 Dec., 1968 [24 Jan., 1968], No. 3717/68. Heading A4M. A loose cover for a chair includes an elastic tape 23 secured to the undersurface of the cover at the junction of the seat cover panel 12 and the front panel (11) of the backrest cover pocket 14, the tape 23 having free end extensions formed as loops 24 which are to be anchored either beneath the seat or behind the backrest. The loops 24 may be anchored to the chair frame or interconnected by hooks 28 and a joining piece 29. The cover has a skirt 15, 18, 19 surrounding the seat and provided with an elasticated bottom edge 21 carrying loops 22 to receive a drawcord 30.
Patent GB-348139-A (GB)
Title: Improvements in scanning disks for transmitters in television
IPC: H04N3/04
Filed: 1930-02-05
Abstract: 348,139. Television transmitters. FLEMING, J. A., Greenfield, Manor Road, Sidmouth, Devon. Feb. 5, 1930, No. 3830. [Class 40 (iii).] In a reflector scanning disc S for television transmitters, the reflectors are constituted by studs F, Fig. 3, each having a highlypolished oblique plane surface and being of small size with edges accurately aligned. In a disc of 30 inches diameter having 30 studs, each stud should not exceed <1>/10 inch in diameter. The scene is focused upon the disc S and one half of the studs reflect light upon a cell P1 and the other half upon a cell P2, the cells being alternately connected in circuit by a commutator C driven by the motor M driving the disc S. Reflectors K1, K2 shield the cells P1, P2 from extraneous light.
Patent GB-633263-A (GB)
Title: Improvements in or relating to sporting bats
IPC: A63B59/00
Filed: 1948-02-11
Abstract: 633,263. Bats ; outdoor games. BEVIS, J. E. Feb. 11, 1948, No. 3958. [Class 132 (ii)] A sporting bat is provided with two sections A and C pivoted so that when struck by a ball they will be tilted to display scoring numbers marked on their ends, and a section B in the form of a " wicket" which is tilted when struck by a ball to indicate that the player is " out."
Patent GB-211502-A (GB)
Title: Improvements in and relating to pistons of presses for the manufacture of bricks and similar articles
IPC: B30B1/02
Filed: 1924-02-15
Abstract: 211,502. Navet, R. Feb. 17, 1923, [Convention date]. Stationary - mould machines. - In brick &c. presses of the type in which the pressing piston 1 is moved upwardly by a lever or beam 2, the piston is guided vertically by a pair of rods 3 depending on either side of the beam and engaging fixed sleeves 4. A shoe 5 transmits the pressure of the beam to the piston.
Patent GB-1414596-A (GB)
Title: Two-level production line assembly with mechanism for inverting  the product transported on the upper level
IPC: B27N3/16
Filed: 1974-01-29
Abstract: 1414596 Endless conveyers JOHNS-MANVILLE CORP 29 Jan 1974 [27 Feb 1973 (2)] 04024/74 Heading B8A [Also in Division D1] In a system for transporting a plurality of strips of material in the same direction at upper and lower levels to a packing station the lower level comprises a system of conveyers which go directly to the packing station while conveyers at the upper level go beyond the packing station and then a reversing station 86 directs the strips back to the packing station at a common level with the said lower level. As shown in Fig. 1, a blanket 22 of insulating material, e.g. glass fibres, is sliced into two blankets 28, 30 by a cutter 26, e.g. a band saw. The blankets 28 and 30 are then divided into strips by cutters 36, 64, e.g. rotary saws. Facing sheets 38, 66 from rolls 40, 68 are then applied to the faces of blankets 28, 30 which were the original outer faces of blanket 22. The facing sheets are, e.g. paper or foil and are fixed by adhesive, e.g. asphalt adhesive from applicators 42, 70. The strips rae then cut into desired lengths by choppers 52, 80 and subsequent conveyers are run at an increased speed to separate the cut lengths. The strips at the lower level feeds directly to a conventional roll up apparatus 56 which rolls the strips up for packaging purposes. Strips at the upper level continue past the packaging station and are then reversed by a device 86 which also inverts the strips and brings them to the lower level where they are rolled up by apparatus 90. Embodiments of the reversing apparatus are shown in Figs. 2, 3 and 4, the first being a perforate drum 92 to which internal suction is applied over the arc of contact with the strips. A woven conveyer belt 120 of, e.g. polypropylene or metal is trained about the drum 92 to convey the strips and prevent loose fibres from being drawn into the drum. In the second embodiment, Fig. 3, the strips are held between belts 126, 128 supported between side chains which are carried by sprockets. In the Fig. 4 embodiment a single belt 204 co-operates with a drum 192.