baber/WOPTO huggingface dataset:
Patent GB-1168005-A (GB)
Title: A Method of and Apparatus for Determining Geometrical Deviations from a Desired Surface by Optical Means
IPC: G01N21/53
Filed: 1967-11-07
Abstract: 1,168,005. Checking shape photo electrically. ERNST LEITZ G.m.b.H. Nov. 7, 1967 [Nov. 10, 1966], No.50606/67. Headings G1A and G1M. [Also in Division G2] A method of, and apparatus for, determining the magnitude of any geometric deviations of a reflecting surface from the desired configuration thereof comprises uniformly illuminating a definite surface area; separating the light returning therefrom into two components, the first being the light reflected from those parts of the area having the desired configuration and the second being the light reflected and/or scattered from those parts of the area which deviate from the desired configuration; and comparing the two components. As shown Fig. 1, the apparatus is used in examining a ball bearing 18, light from a source 10 being reflected on to an area of the bearing by a mirror 16 and lens 17. The first light component is reflected by a mirror 21, the size, shape and position of which is related to the size and position of a diaphragm 15 in the illuminating system, on to a photo-cell 22 while the second component by-passes the mirror 21 and passes through a lens 19 on to a photo-cell 20. The output signals of the two cells provide a measure of the proportions of the true and deviant surfaces. A polarizer 24 is placed in the illuminating light path and an analyzer 25 is provided to enable separation of light rays reflected from such points of disturbance that depolarize the light. A single photo-cell, to which the light fluxes are transmitted alternately, may be used. In another embodiment, Fig. 2 (not shown), the illuminating light is projected through a fibre optical system (30) on to a plane surface (34). The method of the invention may be applied to penetration type hardness testers Figs. 3, 4 (not shown) in which pyramidal impressions (41, 67) form the deviations. To provide proper differentiation between the surrounding surface and the impression, (Fig.3) the central part of a plate (49) is coloured red and the rest green, so that to an observer (49') the impression (41) appears green on a red background, and the size of the impression can be measured in a plane (41"). Alternatively (Fig.4), the light from the surface tested (65) may be deflected into one path of a flicker photometer while a lens (70) projects the light from the impression (67) into the other path. The output signals from the photometer cell (73) are used to control the variable illuminating system in such a way that equality is produced in both the light fluxes in the photometer light path. A counter provides in digital form a measurement of the size of the impression from the ratio of the light fluxes being equalized.
Patent GB-1446787-A (GB)
Title: Control system for the ignition of a heating system
IPC: F23N5/20
Filed: 1974-11-22
Abstract: 1446787 Control and ignition system for a burner JOH VAILLANT KG 22 Nov 1974 50719/74 Heading F4F In a control system of a burner, power is fed via a normally closed switch 9 to a flame detecting device 4 which controls a normally closed switch 8, an igniting coil 12 which is in series with the switch 8 and a voltage-rectifying network 24 in series with a resistor 27. The D.C. power from the network 24 is then fed to the actuating mechanism 22 of a solenoid valve (i.e. either the solenoid or a relay switch) which is in series with a bimetal relay 19 controlling the switch 9. The power to the relay 19 and actuating mechanism 22 is boosted by a line 17 with a diode 18 connected between the switch 8 and the coil 12. With the switch 8 closed, the power is just sufficient to actuate the relay and open switch 9 cutting off all power. If, however, fuel is ignited and a flame maintained and detected, within the actuating time of the bimetal relay then valve 20 is opened and power to the ignition coil is cut off as well as the booster power to the relay so that it fails to operate and the valve is maintained open. In a modification the switch 9 is moved from the input power line to a position in series with the valve actuating mechanism. The device 4 may be a photo-cell or an ionization monitoring device.
Patent GB-998440-A (GB)
Title: Telephone circuit
Inventor: MERI KALJU
IPC: H04M1/82
Filed: 1963-12-30
Abstract: 998,440. Telephone answering circuits. ROBOSONICS Inc. Dec. 30, 1963, No. 51173/63. Heading H4K. A telephone ringing signal detector and answering circuit comprises, Fig. 2, at the subscriber's station 10 a gas-filled tube 42 which is normally non-conducting except on the receipt of ringing pulses from the central station 30 when the gas-filled tube conducts and completes the primary circuit of transformer 72, the signal appearing at the secondary of the transformer being amplified and applied to an answering circuit 60 which operates to close switch 74 and thus put a low impedance, i.e. the primary of transformer 71, across the line so simulating the off-hook condition at the subscriber's station. Capacitor 44 is provided in series with the gasfilled tube 42 and in parallel with resistor 43, the combination forming a relaxation oscillator which oscillates during the peaks of the ringing current and so converts the low-frequency ring- ing signal to a higher frequency signal which may be more easily amplified in amplifier 50. The breakdown potential of tube 42 is arranged to be between the D.C. bias signal on the line and the D.C. bias plus A.C. ringing signal peak.
Patent GB-994254-A (GB)
Title: A process for the preparation of acylated high molecular weight polyoxymethylenes
IPC: B01J3/04
Filed: 1963-12-31
Abstract: Polyoxymethylene is reacted with acetic anhydride at above 150 DEG C. at a pressure of 2 to 20 atmospheres from 2 to 20 minutes, the reaction mixture added to pure acetic anhydride of temperature 100 DEG  to 130 DEG  C., and the acetylated polyoxymethylene which is precipitated in a finely divided form is recovered.  The reaction may take place continuously in a flow tube, in a mixture of acetic anhydride and methylene glycol diacetate and in the presence of sodium acetate as catalyst.  The starting polyoxymethylene may be partially esterified or alkylated polyoxymethylene.  Apparatus for carrying out the process is described.  Specifications 864,403 and 868,356 are referred to.
Patent GB-1440419-A (GB)
Title: Relief valve system for a scraper apron
IPC: E02F3/85
Filed: 1974-11-27
Abstract: 1440419 Earth-moving scraper bowls CATERPILLAR TRACTOR CO 27 Nov 1974 [4 Feb 1974] 51398/74 Heading E1F [Also in Division F2] A hydraulic pressure relief means in a control system for an earth-scraper comprises a spring-biassed valve 89 connected between the rod and cylinder ends of the apron lift cylinder 28. The force of the biassing spring is increased by admitting fluid pressure from a signal conduit 95 to move a piston 91 having grooves 93. The conduit 95 is connected at its other end to the inlet side of an apron lift control spool valve 48.
Patent GB-1199218-A (GB)
Title: Pneumatic Gauges
IPC: G01B13/00
Filed: 1968-10-30
Abstract: 1,199,218. Differential pneumatic pressure gauging: pressure gauges. ATELIERS DE NORMANDIE. Oct.30, 1968 [Dec. 6, 1967], No.51408/68. Headings G1L and G1M. A pneumatic gauge has a plug T 1 , Fig. 1 for measuring a taper 17, or may be provided with a head having two plugs 21, 22, Fig.2 for measuring the distance between bores 19, 20, of a connecting rod. The gauge comprises a regulating pipe line 1, a measuring pipe line 2 supplied in parallel from a gas supply 3 via equal calibrated orifices 4 and 5, and outlets 6, 18 to atmosphere controlled by a diaphragm 9 operating needles 7, 7A connected to a measuring instrument M, the diaphragm movement being as a result of the differential pressures in 1 and 2 and the movement of 7 being proportional with limitations to variations in (D<SP>1</SP> - D). The plug T 1  comprises orifices 13, 14 connected in parallel and joined to the line 1, and two orifices 15, 16 also in parallel but connected to the line 2. In effect the values of h 1 , h 2 , h<SP>1</SP> 1 , h<SP>1</SP> 2  2 must not exceed d/10, where d is the diameter of orifices 13-16, so that the output of an orifice is proportional to the distance to the wall facing it and (D<SP>1</SP> -D) does not depend on the position of core 17 in the measuring unit. In Fig.2 the distance l between the bores 19, 20 is proportional to l o , the distance between plugs 21, 22, and distances h 1 , h 2 , h<SP>1</SP> 1 , h<SP>1</SP> 2 , and the orifices 23, 26 and 24, 25 are in parallel and connected to 10 and 11 respectively in a similar arrangement to that of Fig. 1. Specification 782, 691 is referred to.
Patent GB-1378293-A (GB)
Title: Detergent compositions
IPC: C11D1/04
Filed: 1972-11-03
Abstract: 1378293 Cyclopentanetrione detergent compositions UNILEVER Ltd 3 Nov 1972 [5 Nov 1971] 51477/71 Heading C5D A detergent composition comprises (A) 0À05 to 95% by wt. of a cyclopentanetrione surfactant of formula wherein R is a primary or secondary alkyl, alkenyl or aralkyl group containing 8 to 18 carbon atoms; X is H or -CO.CO 2 Y wherein Y is H or C 1 -C 4  alkyl; and/or a water-soluble salt thereof, and (B) from 5 to 99À95% of an additional detergent, a detergency builder and/ or a detergent additive. The compounds undergo enolization and in the enol form, form salts. The salts used are the alkali metal, ammonium and substituted ammonium salts. Optional ingredients are (A) anionic, non-ionic, amphoteric or zwitterionic surfactants, (B) inorganic and/or organic builders, (C) oxygen or chlorine type bleach, (D) lather boosters, (E) hydrotropes, (F) antiredeposition agents and other detergent auxiliaries.
Patent GB-1399098-A (GB)
Title: Jig facilitating drilling punching or stamping a workpiece  centrally between parallel sides thereof
IPC: B23B47/28
Filed: 1971-11-05
Abstract: 1399098 Drill jigs A STRANK 10 Oct 1972 [5 Nov 1971 27 Jan 1972] 51496/71 and 3799/72 Heading B3C A drill jig comprises an arm 1, Fig. 1, having a drill bush 3 at the centre thereof, and two further arms 2 adjustably pivoted to arm 1 so as to engage the parallel sides of a workpiece. In a modification, the arms 12, 13 Fig. 3, are secured to a base 7 having a clearance hole 8 in line with bush 14. Arms of different lengths, or bushes of different diameter are provided and are interchangeable.
Patent GB-1131487-A (GB)
Title: Improvements in illuminated devices
Inventor: KELLS NORMAN CYRIL FREDERICK
IPC: F21V8/00
Filed: 1966-11-18
Abstract: 1,131,487. Display signs. PERTINT Ltd. 18 Nov., 1966, No. 51872/66. Addition to 1,090,624. Heading G5C. An edge illuminated transparent sheet 1 has bonded thereto a transparent layer of small light reflective beads in a pattern such that illumination by source(s) 3 will result in even. illumination over the entire sheet surface. The pattern preferably comprises a strip in the region X furthest from the light source(s) completely covered by the beads and triangular fingers extending therefrom towards the light source(s) also wholly covered. The fingers terminate short of the light source(s) and a strip of optically dense material is laid in the region Y therebetween. A transparency is laid over the sheet with the interposition of a translucent layer. A plurality of such sheets may be illuminated by a single source.
Patent GB-1122418-A (GB)
Title: A closure wad for a blank cartridge
IPC: F42B7/12
Filed: 1965-12-08
Abstract: 1,122,418. Blank cartridges. GIULIO FIOCCHI S.p.A. 8 Dec., 1965 [26 Jan., 1965], No. 52114/65. Heading F3A.  A blank cartridge 4 for industrial and sporting use having a closure wad consisting of at least one integral peripheral flange 3<SP>1</SP> engaging the inner surface of the cartridge close to its open end and a transverse diaphragm which is, at least in part, of smaller thickness than the part of the flange adjacent the diaphragm. Weakening grooves, which may be annular or radial, may be formed in the diaphragm. The flange 3<SP>1</SP> may be tapered as shown or be of uniform thickness. The rim 4<SP>11</SP> of the cartirdge is bent over on itself in U-form around the flange 3<SP>1</SP> or may be simply bent over the flange as in Fig. 4 (not shown).
Patent GB-1105648-A (GB)
Title: Improvements in and relating to aircraft ejector seats
IPC: B64D25/02
Filed: 1965-12-09
Abstract: 1,105,648. Stress limiting devices. SAAB AKTIEBOLAG. 9 Dec., 1965 [23 Dec., 1964], No. 52267/65. Heading B8B. [Also in Division B7] To limit the tension in a strap, one of its connections is formed by a peg engaging a hole in the strap, so that tension above a predetermined value causes the strap to tear. The peg has a bar (i.e. it is T-shaped) to retain the strap. The strap, which is of woven material, is used with an ejection seat in an aircraft, to pull a seat occupant's legs towards the seat during ejection.
Patent GB-1104439-A (GB)
Title: Locking and adjusting means for crushers and control means therefor
IPC: B02C2/04
Filed: 1966-11-22
Abstract: 1,104,439. Gyratory crushers. NORDBERG MANUFACTURING CO. 22 Nov., 1966 [10 Feb., 1966], No. 52311/66. Heading B2A. A gyratory crusher has means for rotating the bowl relative to the frame and means for locking the bowl in a desired position, and for unlocking it for rotation, wherein the rotating and unlocking means are incorporated in a fluid-actuated system which includes a control means so that the rotating means cannot be actuated unless the unlocking means have been previously actuated to unlock the bowl. As described, rotation is effected by hydraulic rams 72, Fig. 4, pawls and a known toothed skirt and locking by clamping units 56. In operation, fluid pressure builds up to compress springs of the clamping units 56, and then opens a pressure sequence valve 94 to retract the ram pistons 110 and rotate the bowl. With a valve 98 in an opposite position, the rams extend. No pressure is applied to the rams until the pressure exceeds the level where the springs of units 56 are compressed because of operation of the valve 94. Reference has been directed by the Comptroller to Specification 966,185.
Patent GB-1199697-A (GB)
Title: Process for the Removal of Unreacted Ammonia in the Production of Acrylonitrile
IPC: C01C1/12
Filed: 1968-11-07
Abstract: 1,199,697. Removal of ammonia in the production of acrylonitrile. NITTO CHEMICAL INDUSTRY CO. Ltd. 7 Nov., 1968 [13 Nov., 1967], No. 52840/68. Heading C2C. [Also in Division C1] Unreacted ammonia is removed from the gaseous product resulting from the reaction producing acrylonitrile, which comprises contacting a gaseous phase mixture of ammonia, molecular oxygen and propylene with a catalyst at an elevated temperature, by cooling the resulting reaction product gas in at least two stages by direct contact with quenching water while adding an acid to the first cooling stage in an amount sufficient to neutralize substantially all the unreacted ammonia while maintaining the temperature of the effluent gas from the first cooling stage at a level to condense a minor portion of the water contained in the reaction product gas, thereby recovering the unreacted ammonia in the form of a salt solution of at least 10% by wt. concentration, and condensing the major portion of the water contained in the reaction product gas in the subsequent cooling stages. A small amount of the acid, e.g. a mineral acid such as sulphuric acid, may also be added in the subsequent cooling stages; the concentration of the ammonium salt formed by the neutralization and contained in the liquor withdrawn from the first cooling stage is suitably in the range 15-40% by wt.
Patent GB-1453708-A (GB)
Title: Driver pulse circuit
IPC: G11C17/00
Filed: 1973-11-21
Abstract: 1453708 Pulse driver circuits INTERNATIONAL BUSINESS MACHINES CORP 21 Nov 1973 [29 Dec 1972] 53979/73 Heading H3T A circuit for driving a word line of an array of memory cells comprises an output FET T6 having a feed-back capacitor C and switchable into a non-conducting state by an arrangement T1, T3, T4, a second FET T5 for applying a first pulse to charge the gate of T6 while it remains off and an arrangement for subsequently applying a second pulse to the drain of the same polarity as a steady voltage applied to the drain of T5 to render T6 conductive heavily assisted by feedback capacitor C. The driver circuit T5, T6 is employed for applying a pulse on an associated word line WL to a selected memory cell employing an FAMOS transistor (Fig. 1, not shown) during the write cycle. A selected driver circuit is enabled by appropriate input signals to a circuitry including a multiemitter NOR gate transistor T1 and FETs T2-T4. During the read cycle, T5, T6 are held off while an emitter voltage is applied to T7 whose emitter is allowed to float during the write cycle, to derive a read enabling pulse on the word line WL.
Patent GB-1159570-A (GB)
Title: Improvements in or relating to the Manufacture of Photolithographic Structures
IPC: H01L21/027
Filed: 1966-12-05
Abstract: 1,159,570. Reproducing planar outlines photographically. SIEMENS A. G. Dec. 5, 1966 [Dec. 6, 1965], No.54305/66. Headings G2A and G2C. An original shape or pattern is photographically reproduced by tracing the original with a scanning device, the movement of which is reproduced by the corresponding movement of a spot of light falling on a photo-sensitive surface. The object is to reproduce on the surface of a semi-conductor crystal, to be used in a photo-litographic structure, a copy of the original on a much smaller scale, for example a 550:1 reduction. As shown, the original 15, e.g. a pencil drawing, is supported on an illuminated box 16. A pointer A is traced over the original, the operator viewing the process through a lens system 17,19. A graticule 18 may act as a guide. The movement of a carriage 14 on which the pointer is mounted is transmitted and magnified by a pantograph mechanism 13, to a table 6 which carries a plate 5. Plate 5 has one or several perforations, light from a source 2 passing through the perforation(s) and being focused by an objective 7 on the photo-sensitive surface 9. As pointer A traces a geometrical shape, the point of light on surface 9 traces out the same shape on a reduced scale. By having several perforations, e.g. a thousand, in plate 5, this number of trace-copies may be made simultaneously. The light source 2 may be monochromatic, or a laser. An image may be thrown on to a screen 12, for visual inspection through a microscope, by a pivoted mirror 11.
Patent GB-1203590-A (GB)
Title: Recording a program for numerical control of a machine tool
IPC: B23Q5/52
Filed: 1967-11-29
Abstract: 1,203,590. Programme Control. BUDD CO. Nov.29, 1967 [Dec.19, 1966], No.54330/67. Heading G3N. A system for recording a programme for numerical control of a machine tool comprises a servocontrolled carriage, on which is mounted a transparent reticle representing the tool, a display means for viewing the movement of the reticle with respect to a design, or a sevocontrol unit for moving the carriage and a device for recording programme data relating to the operation of the tool between successive positions of the reticle. As shown, a frame member 16 is movable about along X-axis slides of a drafting machine 10 and a carriage 30 is movable in the Y-direction along the frame member. The carriage supports a mounting 30 which includes a television camera 32 scanning a reticle 34 and the adjacent portion of a drawing 14. The positioning of the carriage 30 and frame member 16 is effected by manually operating servocontrols on a control unit 18 so that the reticle, as seen in a picture tube 35, can be positioned around the drawing. The reticle comprises an image of a forming tool, as shown, comprising concentric circles having diameters related to a cutting tool. The position of the centre of the reticle is shown on an indicator and by making the circumference of the appropriate concentric circle on the reticle contact the drawing at a selected point the indicated position represents a point on the cutting path of the tool corrected for offset. The data from the position indicator is recorded on a tape 24 by the closure of a switch 37 on the control unit. The movement of a tool 28 in response to the position data recorded on the tape is effected by an interpolator, not shown. At the same time as a position is recorded other data relating to the cutting operation, such as feedrate and coolant, are recorded on the tape.
Patent GB-1272421-A (GB)
Title: Improvements in or relating to the manufacture of glass having desired surface characteristics
IPC: C03B18/14
Filed: 1968-11-18
Abstract: 1,272,421. Treating glass surfaces. PILKING- TON BROS Ltd. and D. G. LOUKES. 28 Oct., 1969 [18 Nov., 1968], No. 54679/68. Heading C1M. In the manufacture of float glass having a predetermined light and heat transmission and tub, in which a locating body of molten alloy of at least two metal elements is in contact with the upper surface of the glass as it floats on a bath of molten metal and the temperature of the glass is regulated so that it is receptive to electrolytic modification and which temperature determines the desired relative proportions of the elements from the alloy body which enter the glass surface, a voltage is applied between the alloy body and the bath of molten metal so that current passes from the alloy to the glass, the voltage being regulated in relation to the thickness and temperature of the glass, the composition of the alloy and the time of treatment to enforce an electric flux density which produces sufficient ionic migration of each element across the alloy/ glass interface to give the desired transmission characteristics. The time of treatment is controlled by the length of the alloy body in the direction of advance of the glass. Temperatures can be varied as by heating the glass surface just before treatment. The alloy body may be separately heated or cooled to vary the proportions of the alloy, as for example, a.Cu/Pb alloy, with additional metal available, will contain more Cu at higher temperatures. The alloy is preferably clinging to a locating member comprising one of the metals and this then acts to replenish that metal. Replenishment of either metal may be by a controlled feed of pellets to the locating member where they melt in an aperture therein. After treatment may include passing through a reducing atmosphere where the degree of colloidal dispersion of the elements in the glass is regulated to vary the light and heat transmission characteristics. Suggested locating members are of copper, molybdenum, tungsten or ruthenium for coppertin or copper-lead alloys or silver or ruthenium for silver-lead alloys. Specifications 1,151,853, 1,211,854 and 1,272,222 are referred to.
Patent GB-550141-A (GB)
Abstract: 550,141. Knife-edge bearings. WIRTH, A. July 2, 1941, No. 8367. Convention date, July 2, 1940. [Class 12 (i)] A knife-edge is formed on a cylindrical block 1, Fig. 1, secured in the bore 9 of a lever and adjusted by cylindrical pins 11 having flat taper faces engaging similar faces on the block 1. The cotter pins are driven in opposite directions and are housed in cylindrical bores 7, 8 in the lever, the axes of the bores being parallel with the knife-edge. The knifeedge may be formed by flat faces 2, 3 on the block 1 or by a member 18, Fig. 7, inserted in a groove ending in a slot 20 which forms a claw 21 engaged by one of the pins 11.