baber/WOPTO huggingface dataset:
Patent GB-1455184-A (GB)
Title: Reference plane production
IPC: G02B27/09
Filed: 1974-02-04
Abstract: 1455184 Forming reference plane of electromagnetic radiation J R TRICE 4 Feb 1974 [8 Feb 1973] 05024/74 Heading G1F [Also in Divisions G2 and G3] In a method and apparatus for forming a reference plane of electromagnetic radiation a narrow collimated beam 52, Fig. 1, e.g. of monochromatic or coherent light, is directed on to a reflector 55 to be reflected therefrom in a radially diverging array 53 forming the reference plane. A laser tube on a tripod or stand is aligned directly or via a reflector, Fig. 7 (not shown), with the axis of the cone which may be supported on a ceiling or a wall whereby the edge of the plane is defined by vertical or horizontal lines of light useful in installing heavy machines or in the building industry. The cone may be mounted to be adjustable or tiltable, and if the beam is of donut section the cone may be truncated. The cone may have non-reflective parts or removable sections, Fig. 12  (not shown). In Fig. 14 the beam 214 passes along a solid transparent tube the end of which is conically recessed and reflective at 212 to form radial rays 215. The invention may also be used in a fibre-optic transmission system to explore veins and arteries.
Patent GB-1456852-A (GB)
Title: Television density measuring device
IPC: H04N1/60
Filed: 1973-02-01
Abstract: 1456852 Electronic colour printer KODAK Ltd 31 Jan 1974 [1 Feb 1973] 5123/73 Heading H4F In an electronic colour printer, colour balance of the three sequentially printed colour images is controlled in response to signals representative of the densities of the respective analysed colour images, each of these signals being derived by counting 24 the number of oscillations of a voltage-controlled oscillator 22 during a single scanning of the complete image (field scan), the frequency of which is a function of the density of the image measured by an image scanner. As shown a transparency 3 is analysed by CRT 1 and colour signals from photomultipliers 7, 8 and 9 are field sequentially fed by ganged switches 15 and 20 via a shaper 16 and a switched step attenuator 26 to a display tube 27 which is focused via sequential colour filters 28 on to a printing paper 30, and via preset correction level controls 17, 18 and 19, a grey clamp 21, the VCO 22, a single field gate 23 to the counter 24. The information from counter 24 is fed via a logic unit 25 to control the switched attenuator 26 to balance the brightness modulation of the sequential images contained colour information. A push-button control 31 may be actuated to modify the count fed from counter 24 to the attenuator 26. The grey clamp 21 and VCO 22 are described in detail with reference to Fig. 3, not shown.
Patent GB-1436922-A (GB)
Title: Acidic cleaning powder for metals
IPC: C23G1/06
Filed: 1974-02-05
Abstract: 1436922 Acid metal cleaning composition HOECHST AG 5 Feb 1974 [7 Feb 1973] 05278/74 Heading C7E An acidic, solid or aqueous composition based on sulphamic acid and used for metal cleaning contains 0À1-10 wt. per cent, based on the acid, of an inhibiter of Formula, wherein R' is C6-18 straight or branched alkyl, R" is H or C1-18 straight or branched alkyl, R''' is -COO<SP>-</SP> or -CONH 2 , n is zero when R''' is -COO<SP>-</SP> and is 1 when R''' is -CONH2, and X<SP>-</SP> is a halide ion. Many inhibitors are listed, those with R' as C 12 H 25 , R" as H and X as C1-being preferred. Other ingredients may include diethyl- or dibutylthiourea, a non-ionic wetting agent based on ethylene oxide adducted with alkyl phenols, aliphatic alcohols or amines and a pH indicator e.g. methyl orange. The metal treated may be zinc, iron or steel.
Patent GB-1444871-A (GB)
Title: Apparatus for making a non-woven web
IPC: D21F9/02
Filed: 1974-02-05
Abstract: 1444871 Making non-woven webs of synthetic fibres GLASWERK SCHULLER GmbH 5 Feb 1974 [8 Feb 1973] 05297/74 Heading D2A Apparatus for making a non-woven web of synthetic fibres, e.g. glass fibres, comprises a receptacle I for accommodating an aqueous suspension of the fibres, a liquid-permeable band 6 arranged to travel upwardly across the outlet 3 of the receptacle so that a web 9 is laid down on the band, liquid being drained through the band by suction boxes 7, and a plurality of turbulence-creating members 12, 15, arranged side by side in at least one row, extending into the suspension, at least some of the members having passages through which filamentary material 18 is passed, the filamentary material becoming embedded in the web 9 to strengthen it. As shown in Fig. 1 the members 12 are solid rods of circular section mounted on a transverse comb-like element 10 which is pivotally adjustable. The members 15, which are also mounted on a transverse element, are tubular. The material 18 is fed from supply spools 17 through the members 15 to the suspension. By pivotal adjustment of the members 15, the turbulence they create, and thus the depth of the filamentary material in the web 9, can be controlled. In a modification (Figs. 3, 4), the tubular members 32a, 32b passing the filamentary material 31a, 31b are arranged in two rows alternately with solid members 33a, 33b and the material is fed through water flowing in the members 32a, 32b. If the water is fed at high pressure, the filamentary material can be accelerated to a speed higher than the suspension with the result that the filamentary material is embedded in the web in a bowed or wavy configuration.
Patent GB-495278-A (GB)
Title: Improvements in and relating to arrangements for damping rotational oscillations in shafts
IPC: F16F15/14
Filed: 1938-02-21
Abstract: 495,278. Torsional vibration-dampers. JUNKERS FLUGZEUG-UND-MOTORENWERKE AKT.-GES. Feb. 21, 1938, No. 5395. Convention date, Feb. 20, 1937. [Class 108 (iii)] [Also in Group XXVI] Means for damping rotational oscillations in shafts comprise masses 21, 22 co-operating in pairs, rotating about the centre of the shaft and pressed by means of spring-pressed plungers 15, 15a against frictional linings 2 i, 26 carried by members 23, 24 secured to the shaft. The plungers are housed in recesses lying on circles of different diameters. The plungers 15, 15a engage smooth surfaces on the masses they engage. The masses may rotate relatively and have polar moments of inertia of equal value. The Specification as open to inspection under Sect. 91 comprises a number of modifications. The spring-pressed plungers are arranged in one mass only and lie on one circle only. Constructions are described wherein discs on the shaft each carry two masses, one of which partly surrounds the other and carries the pressure elements. A lining of higher coefficient of friction can be interposed between the masses, or the contact surfaces of the blades may be wedge-shaped. This subject-matter does not appear in the Specification as accepted.
Patent GB-1367898-A (GB)
Title: Methods of and apparatus for transmitting heat between a powdered material and gas
Inventor: SYLVEST K J
IPC: F28C3/12
Filed: 1971-02-25
Abstract: 1367898 Preheating and cooling powdered material F L SMIDTH & CO AS 6 Dec 1971 [25 Feb 1971] 5452/71 Headings F4B and F4U A preheater for cement raw meal being fed to a rotary furnace 1 comprises a narrow casing 3 with walls 23, 24 enclosing four channels 16, 17, 18 and 19 arranged in zig-zag fashion, each channel being formed by downwardly and inwardly inclined side walls 26, 27 merging into vertical skirts 28, 29 defining a continuous restricted opening 30 along the bottom of each channel, hot gases from the furnace offtake 2 passing through each opening 30 in turn to a waste pipe 4. At the end of each channel is a small chamber 14 with an outlet 25 controlled by a flap valve 15. Raw material fed by pipe 12 to the uppermost chamber 14 is released in batches by its valve 15 over channel 16 above which are eddies created by the passage of gases through the opening 30. These eddies carry the material downwardly until contact with the next lower chamber 14 destroys the eddy depositing material on the valve 15. From the lowest stage material enters the furnace via pipe 20. Hot gases from pipe 4 pass in turn through a cyclone separator 5, a fan 7 and an electrostatic precipitator 9. The chambers 14 may be dispensed with except at the material entry and exit points (Fig. 5) and said material may be introduced into pipe 4. Cement discharged from a mill or alumina from a rotary furnace may be cooled in the apparatus of Fig. 7 in which a single channel is formed in an elongated casing 49 with material inlet 58, outlet 60, and air offtake 62, the lower part of the casing being divided by partitions 50 into plenum chambers supplied with cooling air by a fan 57 via a main 55 and branch pipes 54. Two coolers may be disposed in series, one at a slightly lower level than the other (Fig. 10).
Patent GB-158464-A (GB)
Title: Improvements in heat-insulated food containers
IPC: A47J41/02
Filed: 1920-02-23
Abstract: 158,464. McLane, J. A. Feb. 23, 1920. Cold and heat retaining vessels. - A food receptacle and container are separated by a vacuum jacket in such manner that the vacuum does not extend to the food space and is destroyed when the cover is taken off. The container comprises an outer vessel 1 with an inwardly projecting flange 6<a> and an inner vessel 13 with an outwardly projecting flange 13<a> between which and the flange 6<a> is a gasket 7 of insulating-material. The cover 2 is hollow and is lined underneath with insulating-material to form a tight joint when the cover is secured by the catches 4. A small pipe 3 extends through the gasket and places the jackets in the cover and container in communication. The valve 9 serves to exhaust the air from both jackets, the inner vessel being kept air-tight by the joint with the cover.
Patent GB-802370-A (GB)
Title: Improvements relating to exhaust reheaters for gas turbine jet engines
IPC: F02K1/82
Filed: 1955-02-23
Abstract: 802,370. Jet propulsion plant. GENERAL ELECTRIC CO. Feb. 23, 1955 [March 18, 1954], No. 5477/55. Class 110 (3). [Also in Group XII] In a gas turbine jet propulsion engine, exhaust reheat combustion equipment comprises an outer shell 24 and a liner or flame tube disposed therein, the liner being formed of a number of plates 30 disposed in axial and circumferential rows, the plates being supported on axially-directed I-section beams 26 spaced circumferentially within the outer shell. The plates 30 are bowed inwardly to permit relative circumferential expansion, and the plates are formed with louvres 32 by means of which air or gas may be directed inwardly from the annular space between the outer shell and the flame tube to flow adjacent the inner surface of the flame tube so as to cool it. The plates 30 may overlap in the axial direction to permit relative axial expansion. Reheat fuel is supplied through injectors 20 and a flame holder 22 is supported at the downstream end of the exhaust cone 15. The cooling gas may be exhaust gases discharged from the turbine. It is stated that the reheater construction prevents "screech."
Patent GB-177942-A (GB)
Title: Improvements in or relating to suspension devices for motor and other vehicles
IPC: B60G17/02
Filed: 1921-02-17
Abstract: 177,942. Mutti, A. Feb. 17, 1921. Addition to 13448/13. Springs, arrangement of. -Relates to spring-controlled lever suspensions provided with means for automatically varying the leverage of the springs to accommodate different loads as described in the parent Specification, and comprises mechanism actuated by the rotation of the road wheels to bring the leverage-varying devices into operation. The invention is particularly described in connection with the arrangement shown in Fig. 6 of the parent Specification. The lever 52 is pivoted at one end 51 to the body of the vehicle and at the other end to a standard 1 supported by the axle, and is provided with a plate 2 formed with a pair of cam-slots 3, 4. A wheel 6, normally near but .not in contact with the hub or brake-drum 7 of the road wheel, freely rotates on an axle 5 which passes through the cam-slot 3 and is pivoted at 9 to the standard 1. A pair of discs 10, 11 carried by a shaft 12 passing through the axle 5, are arranged one on each side of the wheel 6. When the load on the lever 52 is varied, the wheel 6 is brought into contact with the hub &c. 7, and one of the discs 10, 11 is moved against the periphery of the wheel 6 by a bell-crank 14, 14<1> pivoted to a bracket 15 on the standard 1, the arm 14<1> engaging the cam-slot 4 and the arm 14 a double collar 13 on the shaft 12. The rotary movement of the shaft 12 is conveyed to the worm 18 of the leverage-adjusting device by a flexible shaft 16 and worm 17. Rotation of the shaft 12 may also be utilized to alter the position of the double eccentric 59, 60. The axle 61 of the double eccentric is carried by a yoke 26 which is raised or lowered by screw mechanism 22, 23 operated by worm-gear 20, 21 actuated by a flexible shaft 19 connected to the shaft 12. The flexible shaft 19 may be operated by a hand-wheel.
Patent GB-672896-A (GB)
Title: Manufacture of fibrous insoluble alginates
Filed: 1949-03-01
Abstract: Insoluble alginates having a pronounced fibrous structure are made by treating alginic acid or an alkali metal alginate, whilst being subjected to mechanical treatment, with a concentrated solution of a cation forming an insoluble alginate.  A concentrated solution of cations is one having a minimum cation concentration of about 7 per cent.  Mechanical treatment is effected by milling in, e.g., ball-, rod- or edge mills or in a Hollanders mill.  Calcium chloride of about 20 per cent strength may be used.  The alkali metal alginate may be made from alg  products by conventional methods whilst in the mill and calcium chloride added later.  Pigments may be added or may be present during manufacture.  The products are for use in the paper trade (c.f. Group VIII), and may be mixed with other alginates, e.g. aluminium alginate, which increases adhesive power.
Patent GB-740471-A (GB)
Title: Improvements in and relating to half-tone printing blocks and foils for the production thereof
IPC: G03F5/00
Filed: 1953-02-27
Abstract: 740,471. Colloid layers; photomechanical printing surfaces. HEUSSNER, G. Feb. 18, 1954 [Feb. 27, 1953], No. 5651/53. Class 98 (2). To avoid the necessity of " make-ready " operations, in which papei underlayers are inserted to raise the shadow areas of half-tone printing-blocks, an unsensitized foil comprises in simplest form a sheet carrier with a first relatively thick and transpaient colloid layer and a second relatively thin and lightly pigmented colloid layer so that light may penetrate the latter layer to a variable depth. As shown, the foil has a paper carrier 13, a third, heavily pigmented, gelatine layer 14; the second layer 15 of gelatine lightly pigmented with burnt sienna, and the first, uppermost, transparent layer 16 of mixed gelatine and fish glue. Thicknesses and pigment concentrations of the layers are specified. In use the foil is sensitized with ammonium bichromate and light is directed thereto, as shown by the arrows in Fig. 1, through a half-tone negative with glass base 10, image areas 11 and transparent dots 12; the light penetrates through the transparent layer 16 and into the lightly pigmented layer 15 to increasing depths 18, 19, 20 proportional to the increasing diameters of the transparent dots 12. After exposure the negative is removed and the foil is given a short overall exposure to harden the upper skin of layei 16, as shown at 26, and then inverted and stuck to a metal base 21 as shown in Fig. 2, the paper carrier 13 now being uppermost. Warm water is used to remove the paper carrier 13 and all unhardened colloid, and leave the result of Fig. 3 with hardened portions 22, 23, 24, 25 of increasing diameters and heights, proportional to the transparent dot areas of the half-tone negative. The function of the heavily pigmented layer 14 is to prevent exposure from penetrating through to the paper carrier 13 and hindering its removal by hardening adjacent gelatine portions. The function of the hardened skin 26 is to provide a basis for hardened portions 22-25 on the metal base 21. The result as shown in Fig. 3 may be incorporated in a forme with type and used to make an impression on a flong, from which a printing block or cylinder is cast. In the wet flong method a nitrocellulose varnish may be applied to prevent swelling and disintegration of the portions 22-25. The simpler form of unsensitized foil referred to above may have a celluloid carrier with transparent colloid layer 16 adjacent thereto and lightly pigmented layer 15 on top, layer 14 being dispensed with; exposure, after sensitization, is through the carrier, which latter may be affixed to a stiff support for washing out.
Patent GB-989437-A (GB)
Title: A process for the purification of adipic acid
IPC: C07C51/47
Filed: 1962-02-15
Abstract: Solid adipic acid is purified from monocarboxylic acid by contacting with from 0.05 to 1 part by weight of water, methanol, ethanol, acetone, methyl ethyl ketone, or an ether with up to six carbon atoms and boiling in a range from room temperature to above the B.P. of the monocarboxylic acid, and heating to drive off the monocarboxylic acid and the added compound. Examples describe the purification of adipic acid prepared by the oxidation of cycolhexane and crystallized from acetic acid or other saturated monocarboxylic (2-6 C) acids.
Patent GB-668360-A (GB)
Title: Automatic switching system applicable to telephony
IPC: H04Q3/42
Filed: 1945-11-05
Abstract: 668,360. Automatic exchange systems. COMPAGNIE GENERALE D'ELECTRICITE Nov. 5, 1945 [March 26, 1943], No. 6870/51. Divided out of 668,261. Drawings to Specification. Class 40 (iv). In an automatic exchange system in which the selectors are controlled by a register equipment such as relays, switch magnets and resistances which have to be supplied with current are permanently earthed and are energized by battery applied by the register. Since the number of registers is small compared with the number of switches and protective devices such as heat coils are always incorporated in the battery lead the number of such protective devices required is thereby considerably reduced. The invention is described in relation to part of the system described in Specification 668,261 whose claims are related to other features thereof.
Patent GB-861349-A (GB)
Title: Hard facing material and method of making
Inventor: OWEN ROBERT GARDNER
IPC: C23C24/10
Filed: 1958-02-24
Abstract: A hard surfacing material, particularly for cutting tools, consists of a plurality of bodies of cemented metal carbide bonded by and dispersed in a metal matrix, the cemented metal carbide bodies each consisting of particles of metal carbide cemented by one or more of iron, cobalt and nickel, the matrix metal filling the spaces between the bodies, being alloyed to the said cementing metal at the surfaces of the said bodies and inwardly thereof for a limited distance to provide intergranular penetration of the matrix between the carbide grain of the said bodies.  The matrix metal is a tough, ductile, shockproof metal having a melting point not substantially higher than the melting point of the cementing metal.  The carbides may be carbides of W, Mo, Cr, V, Zr, Ti, U, Ta, or Nb and the matrix metal Cu, Cu-Zn alloys, Cu-Ni alloys, Cu-Si alloys or more complex alloys of Cu containing elements selected from Mn, SnFe, Ni, Si, ZnCd, Co, Ag, Be, B, P, of which examples are given.  The mixed cemented metal carbide bodies and matrix metal in powder form may be maintained at at least the melting temperature of the matrix metal for a period not exceeding 20 minutes, e.g. 3-20 minutes to allow intergranular penetration.  In using the material to form a hard surface the material may be applied to the surface of a member and heated thereon to a temperature above the melting point of the matrix to cause the matrix to alloy with the metal of the member. Alternatively the solid material may be applied to a surface on which a film of molten metal has been formed.
Patent GB-651220-A (GB)
Title: Improvements in circuits for modulating or interrupting radio frequency oscillations
IPC: H03K7/00
Filed: 1948-02-27
Abstract: 651,220. Valve modulating circuits; pulsing carrier frequencies. DEPARTMENT OF COMMERCE, DIRECTOR OF THE OFFICE OF TECHNICAL SERVICES OF. Feb. 27, 1948, No. 5995. Convention date, March 3, 1943. [Class 40 (v)] In a circuit for modulating or pulsing a carrier wave, a D.C. source is connected through an inductor across the anode-cathode circuit of the modulating valve, and through a capacitor to the cathode-anode circuit of a wave generator or amplifier shunted by a diode valve or a choke coil. As shown in Fig. 2, the D.C. source 10 is connected through an inductor 11 and if desired a diode 9 across the anode-cathode path of a valve 19, the grid of which is normally held negative to block the valve but is rendered positive by narrow pulses supplied by the keyer 23. The anode of the valve 19 is connected to one side of a condenser 12, the other side of which is connected to the cathode-anode circuit of the carrier valve 14, and to the negative pole of the source 10 through a diode valve 13. When the valve 19 is blocked the condenser 12 charges slowly through the inductor 11 and diodes 9, 13 and when the valve 19 is unblocked by a pulse, the condenser discharges rapidly through the valve 19 and the carrier valve 14, causing the latter to generate a pulse of carrier. In order to permit the charging of the condenser 12 to a voltage higher than that of the source 10, an auxiliary triode valve 31 may be connected across the source 10 and inductor 11, wide pulses, preferably synchronous with those applied to the valve 19, being fed to the grid of the valve 31, thus allowing the current in the coil 11 to build up. For delivering high power, a number of triodes connected in parallel may replace the pulsing valve 19, and the pulses may be produced from a sine-wave generator 32 and fed to the valves 19 through a pulseamplifier and a cathode-follower (Fig. 4, not shown). When the system is applied to continuously-variable modulation such as voice modulation, the circuit is modified as shown in Figs. 3 and 5. In Fig. 3, the modulation source 48 varies the conductivitv of the valve 19. The diode 13 of Fig. 2 is omitted, and the carrier source takes the form of two separate backcoupled valves 41, 46 with their anode-cathode paths oppositely connected, giving a carriersuppressed output. In Fig. 5, a choke 48 is inserted in series with the diode valve 13, and the anode of the valve 19 is connected through a diode 9 and inductor 11 to a D.C. source as in Fig. 2.