baber/WOPTO huggingface dataset:
Patent GB-931182-A (GB)
Title: Improvements in or relating to apparatus for controlling and measuring the thicknessof thin electrically conductive films
IPC: G01B7/06
Filed: 1959-08-06
Abstract: 931,182. Determining physical dimensions of materials. GENERAL ELECTRIC CO. Aug. 1959 [Aug. 12, 1958], No. 26894/59. Class 37. In an apparatus for gauging the thickness of a conductive film formed on a non-conducting base, two signals are provided representing the thickness of the film plus base, and the thickness of the base respectively and are subtracted to obtain a difference signal representing the film thickness alone. A probe unit 2 (Fig. 3) for measuring the thickness of an aluminium film on a cathode-ray tube screen, comprises a coil L3 wound about a cylindrical former 46, and a Faraday screen 16 mounted beneath the coil. As the probe is moved across the face of the cathode-ray tube, variations in the total thickness of glass plus film vary the Q of the coil, and variations in the thickness of the glass alone vary the capacitance between the film and the Faraday screen. The measuring apparatus comprises a crystal controlled oscillation 1 the tuned circuit of which includes the coil L3, and a second crystal-controlled oscillator 6, the tuned circuit of which comprises a transformer 14 tuned on its secondary side by the capacitance of the Faraday screen 16, and a fixed capacitor C13. The output from the first oscillator is rectified, smoothed and fed on to the grid of a D.C. amplifier 12, and that from the second is also rectified and smoothed and fed via D.C. amplifier 21 and relay contacts 26, 28 on to the grid of D.C. amplifier 30. A bridge circuit comprising meter 31, relay coil 32 and resistors R10, R11 is connected in the cathodes of valves 12, 30. A further valve 19 having in its anode circuit a relay coil 25 for controlling contacts 26, 27, 28 is fed with the same D.C. signal as valve 21, the arrangement being such that the output from valve 21 is only fed to valve 30 if the output from oscillator 6 is above a predetermined value. At other times, a reference signal is fed via contacts 26, 27 for calibration purposes. The components 38 are all mounted in a can in the probe unit. The output from the oscillator 1 is dependent on the Q of coil L3, and hence on the total thickness of glass plus metal film and the output from oscillator 6 depends on the capacity between the Faraday screen and the metal film, and hence on the thickness of the glass alone, so that the difference current flowing through meter 31 may be made dependent on the film thickness alone. Relay 32 may be arranged to close contacts 34, 35 to light a lamp 37 or to control the depositing process.
Patent GB-870454-A (GB)
Title: Dichloro-dialkylamino-methanes
Filed: 1957-08-26
Abstract: The invention comprises dichloro-dialkylamino methanes of formula: <FORM:0870454/IV (b)/1> where "alkyl" is methyl or ethyl, and their preparation by reacting the corresponding dialkyl formamide with phosgene in an anhydrous inert organic liquid, with elimination of CO2. Specified solvents are chloro- and dichlorobenzene, tetrachloroethane, chloroform and carbon tetrachloride.  Room temperature or slightly below, e.g. 10-20 DEG C., is advantageously used.  Cyclic aldehydes are prepared by condensing a cyclic compound containing a reactive hydrogen atom bound to carbon with a dichloro-dialkylamino methane as above, to form an intermediate of formula >C-CHCl-Y N(CH3)2 or >C-CH=N(CH3)2\sSCl-, and hydrolysing, e.g. with ice or ice-water or alkali.  For this purpose the dichloro-dialkylamino methane need not be isolated from the reaction medium in which it is formed.  Examples prepare the following cyclic aldehydes: 4-(Nmethyl-N-b - cyanoethylamino)- benzaldehyde (via the intermediate) <FORM:0870454/IV (b)/2> and the aldehydes of formulae: <FORM:0870454/IV (b)/3> Specification 506,797 is referred to.
Patent GB-1432514-A (GB)
Title: Variable frequency communicating apparatus
IPC: G08B25/10
Filed: 1974-06-18
Abstract: 1432514 Burglar; fire alarms JBH ELECTRONIC SYSTEMS Inc 18 June 1974 [22 June 1973] 26914/74 Headings G4N and G4H In a burglar or fire alarm apparatus, the alarm signal is transmitted by an arrangement 12 producing an F.M. signal having a power output of less than 100 milliwatts and with a mean frequency deviation spread over a band including a plurality of adjacent F.M. broadcast channels. The transmitter includes (Fig. 2, not shown) a frequency modulated oscillator having a varactor diode to which a ramp sweep voltage is applied by a free-running multivibrator when it is energized by a circuit in response to the closure of an alarm switch for a predetermined period. The multivibrator includes switchable timing resistors for varying the deviation rate of the transmitted signal so that different transmitters may be kept at different locations to monitor different conditions. The transmitters may be arranged to be energized by the opening of a door or a window. The receiver may be a conventional F.M. receiver 15 associated with a step frequency changer 30 for switching the receiver centre frequency between two frequencies at a low audio frequency to reduce false alarm conditions. The receiver also includes an inverse A.F.C. arrangement for tuning the centre frequency away from standard broadcast signals. The received signal is demodulated to produce a tone frequency signal characteristic of a particular alarm condition which is detected by tone filters and associated detector circuits to activate an aural, visible alarm or provide an indication at a police or fire station. The arrangement also provides automatic indication of a fall in the transmitter battery voltage. A plurality of transmitters may be arranged at different locations to provide a common alarm signal or an identifying tone at the receiving station.
Patent GB-1256348-A (GB)
Title: Directionally solidified castings
IPC: C30B11/14
Filed: 1970-06-04
Abstract: 1,256,348. Casting processes. UNITED AIRCRAFT CORP. 4 June, 1970 [27 June, 1969], No. 26919/70. Heading B3F. [Also in Division H5] A method of making a directionally solidified article comprises positioning the end of a consumable electrode 19 within a mould 12 having a cooled chill plate 10, striking an arc to melt the electrode, and periodically shutting off the arc to control the depth of molten metal above the liquid-solid interface. A single crystal ingot may be produced by placing a seed crystal of the desired orientation on the chill plate 10. The process is preferably carried out in a vacuum. The mould comprises a ceramic sleeve 12, a wall 14 secured to the chill plate 10, and granular ceramic material 17 in the space between the sleeve 12 and wall 14. A heating coil 18 may be provided for preheating the mould. The power supply to the electrode 19 and to a motor for lowering the electrode into the mould may be controlled by a timer 30. The process permits rapid solidification of the molten metal and produces an article having a fine columnar grain structure. The solidification front remains substantially horizontal throughout the process.
Patent GB-227773-A (GB)
Title: Improvements in clothes pressing machines
IPC: D06F71/06
Filed: 1923-10-16
Abstract: 227,773. Lewis, C. H. Oct. 16, 1923. Ironing - machines with pressing-action only. - The movable hollow steam - heated pressing member 7 is mounted on a crescentshaped beam 6 which is rocked about a pivot 5 by fluid pressure operated means comprising a double piston 8<1> and a piston rod 8 connected directly to the beam, the piston working in a cylinder 8<c> and being operated by steam admitted from a four-way cock 10 to one end or the other of the cylinder according to whether it is desired to open or to close the press. The cylinder is mounted in an inclined position so that a short beam may be employed. The steam used in operating the piston is obtained from the same source as that used for heating the pressing members. Specifications 227,521 and 227,772 are referred to.
Patent GB-1062885-A (GB)
Title: Improvements in and relating to weighing apparatus
IPC: G01G1/04
Filed: 1964-06-30
Abstract: 1,062,885. Weighing apparatus. H. CLESS. June 30, 1964 [July 10, 1963], No. 26980/64. Heading G1W. A pendulum balance comprising a counterweighted beam 4 pivoted on a stand 2 by a knife edge 5 and provided with a scale pan 9 supported on a carrying member 8 is characterized in that the lower ends of the member 8 and stand 2 are provided with sector-shaped guide elements 10, 12 having equal curvature and a guide wire 14 is attached at its ends 15, 16 to the elements 10, 12 and arranged to abut the curved surfaces of these elements. In one embodiment Fig. 2 (not shown), the scale pan (22) is offset in such a way that any load it supports always tends to tension the guide wire (25) but in the embodiment shown in Fig. 1 since the load may be positioned to allow slackening of the guide wire 14, two auxiliary tensioning wires 18, 17 connected to a common floating bar 19 and attached respectively to the guide elements 10, 12 are provided. These arrangements ensure that when the pan is loaded parallelogram-type motion is achieved. Excessive tensioning of the guide wire in each embodiment may be avoided by attaching one end of the wire to a pivoted lever (29) whose deflection is controlled by a spring (30) Fig. 4 (not shown) and by providing a suitable stop (32) Fig. 2 (not shown) at the bottom of the pan carrying member (24).
Patent GB-1219346-A (GB)
Title: Improvements in and relating to apparatus for the detection of a lighter liquid in a heavier liquid
Inventor: GORDON JOSEPH ROBERT
IPC: G01N33/18
Filed: 1968-06-06
Abstract: 1,219,346. Detecting a liquid floating on another liquid. J. R. GORDON. June 6, 1968 [Aug.3, 1967], No.27027/68. Heading G1A. An apparatus for detecting a predetermined amount of a lighter liquid (oil) floating on a heavier liquid (water) of higher optical transmissivity comprises a chamber 52, Fig.2, with an inlet 50 and an outlet 54 under vacuum drawing liquid from the chamber, a sleeve 64 around and spaced from the outlet as a barrier to the floating, liquid, and a light source 60 for sending a beam to a detector 62 through the liquid, the beam being reduced by the presence of the floating liquid. The inlet and outlet may be brought up from the bottom of the chamber. The apparatus is described for monitoring the condensate from an oil purifying system and a signal from the detecting photoconductor is used to control a relay to operate an evacuating solenoid valve 39.
Patent GB-901845-A (GB)
Title: Process and apparatus for the recovery of meat from bones
IPC: A23L13/60
Filed: 1960-08-04
Abstract: 901,845. Removing meat from bones. INTERNATIONAL MEAT PROCESSORS Inc. Aug. 4, 1960 [Aug. 10, 1959], No. 27044/60. Class 28 (2). Meat bearing animal bone, wherein the meat protein is uncoagulated, is fragmented and worked to loosen the meat after which the mass is fluidized and centrifuged to produce separable strata. As shown, Fig. 1, the carcass portions, e.g. chicken neck, lamb, whale, fish, are fed to a pre-breaker 9 from which the mass passes to a disintegrator 11 and thence through a screw conveyer 14 which completes the separation to a mixing vat 16. A measured amount of water is also fed to vat 16, and when the slurry so formed is completely mixed, valve 20 is opened and the slurry passes to pump 24 which discharges it to a centrifuge 27. The bone is deposited on the inner wall of the bowl 28 of centrifuge 27 and is guided by ribs or the like 34 on the wall of bowl 28 and by impeller blade 29, Fig. 2, while the meat and water overflows through a port 32. A series of ports 30, 32 may be spaced circumferentially round bowl 28. Excess water may be removed by further centrifuging and the meat produced used in sausages, soups, broths, meat loaves and the like. In a modification, a worm conveyer is included between pre-breaker 9 and conveyer 13, disintegrator 11 being placed after conveyer 13 and in a further modification of this arrangement conveyer 13 is inclined. The water may be added to the meat/bone mixture at any time before centrifuging. Examples are given using chicken necks, front quarter beef, sheep fronts and lamb chucks.
Patent GB-694717-A (GB)
Title: Improvements in warp-tension control means
IPC: D04B15/38
Filed: 1949-10-21
Abstract: 694,717. Knitting-machines; warp tensioning devices. CELANESE CORPORATION OF AMERICA. Oct. 21, 1949 [Oct. 23, 1948], No. 27113/49. Class 74 (ii). [Also in Group IX] A sheet of warp threads 48 is tensioned by passing it over a bar 47 loaded by a helical spring which, on movement of the tension bar is subjected to torsion about its axis. Helical torsion springs 59, 61, 62, &c. resist the pull of the warps 48 on the bar 47 supported by arms 51 from a rockshaft 13. Successive springs are of opposite hand, so that they all coil or uncoil together and the two end springs are twice as stiff as (e.g. being of stouter wire than or having half as many turns as) each of the intermediate springs. One end of each spring is connected to a disc which, by means of nuts such as 133, 134 on screwed adjusters such as 129, can be rotated about shaft 13 to vary the initial degree of torsion in the spring ; the pairs, such as 61, 62, of intermediate springs are adjusted together in this way by a common adjuster. Specification 658,314 is referred to.
Patent GB-914761-A (GB)
Title: Improvements in or relating to thermo-electric generators
IPC: H01L35/30
Filed: 1960-08-04
Abstract: 914,761. Valve frequency-selective amplifying circuits. COMMISSARIAT A L'ENERGIE ATOMIQUE. May 12, 1959 [May 17, 1958], No. 16301/59. Addition to 888,439. Class 40 (6). [Also in Group XXXVI] In a magnetometer (see Group XXXVI), energy emitted by a sample at its nuclear resonance frequency is amplified by a selective amplifier. The pick-up coil 54 is tuned by capacitor 57 to the input frequency (2.1 kc/s.). The tuned circuit is coupled to an oscillating detector 61 comprising valves 101, 102 having positive feedback via resistor 108. The Q factor of the circuit must be sufficiently high for the energy emitted by the solution at the nuclear resonance frequency to maintain oscillation. The output of the oscillating detector 61 is fed to an amplifier 64 which is tuned to pass 2.1 kc/s. by feedback via the twin T filter 126. Positive feedback between the cathodes of valves 123, 119 improves selectivity. The circuit should be tuned to the nuclear resonance frequency preferably by automatic control of capacitor 57 or of the bias current of a ferrite cored inductor which may be connected to coil 54.
Patent GB-538863-A (GB)
Title: Method of coating paper
IPC: D21H23/00
Filed: 1939-10-04
Abstract: 538,863. Coating paper. MASSEY, P. J. Oct. 4, 1939, No. 27212. Convention date, Nov. 14, 1938. [Classes 96 and 140] One or both surfaces of a web A of paper for printing &c. is or are coated, e.g. after leaving the first wet press or in the dryer section, with a suspension of mineral and an adhesive, using a roll or rolls 11 the surface of which has been pitted as by sandblasting, knurling, etching, engraving or produced by electrodeposition, so as to allow the suspension to flow freely from pit to pit to form a continuous film, i.e. the roll 11 has closely adjacent minute inter-communicating depressions leaving isolated high-points. The roll 11 may be of bronze, phosphorus bronze, or gun-metal chromium-plated and sand-blasted to a depth of pit of 0.003 inches or such a roll may be topped with a resist and etched, using iron chloride, to a depth of 0.005 inches. The roll 11 may be supplied from a pan 12, and a roll 13 slightly spaced from the roll 11, excess suspension being doctored off at 14, the web A passing between the roll 11 and a roll' 10 of soft rubber, paper, or leather &c. A rubber roll may be interposed between the roll 11 and the web A. Coating suspensions may include clay, titanium oxide, satin white, lithopone, calcium carbonate, barium sulphate, soya bean flour, starch, glue, casein, glucose, gum arabic, linseed oil. rosin, "mahogany soap," glycerine, and Turkey red oil.
Patent GB-963981-A (GB)
Title: Improved thermographic copy sheets
IPC: G03C1/52
Filed: 1960-08-05
Abstract: 963,981. Heat-sensitive diazo sheet materials. MINNESOTA MINING & MANUFACTURING CO. Aug. 5, 1960 [Aug. 7, 1959], No. 27309/60. Heading G2C. A thermographic sheet material comprises on a backing or included or impregnated in a selfsustaining sheet a heat-sensitive combination consisting of an azo coupling component and a solid, light-stable non-hygroscopic triazene non-volatile at temperatures up to 150C. of the formula Ar-N=N-N(R)R<SP>1</SP> where Ar is aromatic, R is organic, and R<SP>1</SP> is organic or hydrogen, the coupling component and the triazene being such as to be immediately visibly inter-reactive when 10 mgs of each are mixed together 5 ml of a solution containing 10% of glacial acetic acid in 95% ethanol. Thus the reactants may be impregnated into a paper sheet, mixed into a film-forming binder to form a self supporting sheet, or coated in a binder in a single or separate layers on to a heat-stable sheet e.g. tracing paper or polyethylene terephthalate. Typically, the triazene compounds are ones of the formula above in which Ar is phenyl, dichloro phenyl or carbomethoxyphenyl or p-N-methylacetamidophenyl, R is phenyl and R<SP>1</SP> is methyl or hydrogen; Ar is p diethylaminophenyl, R is p-acetamidophenyl and R<SP>1</SP> is hydrogen; or bis-triazene compounds such as 3 : 3<SP>1</SP>-dimethoxy-4 : 4<SP>1</SP>-dipheny lene-bis-(3<SP>11</SP>-methyl-3<SP>11</SP> sodium methylene carboxylate or #-ethylene sulphonate-1<SP>11</SP>-triazene); the couplers are aromatic hydroxy compounds such as phloroglucinol, aromatic amino compounds such as diaminonaphthalene, active methylene compounds, and aryl amides of 3-hydroxy-2-naphthoic acid ("Naphtol AS"); and binders are polystyrene, vinyl chloride-acetate copolymers, polyvinyl butyral, and ethyl cellulose. Fillers and pigments, e.g. titanium dioxide, may be included in the sheet or in the case of transparent backing sheets an opacifying overcoat may be applied e.g. of zinc oxide in a binder of sytrene-isobutylene copolymer containing a phythlic anhydride.
Patent GB-463948-A (GB)
Title: Improvements in or relating to brackets and like supporting devices
IPC: A47B73/00
Filed: 1935-10-03
Abstract: 463,948. Brackets. BERWICK, A. G., and RANSOM, R. Oct. 3, 1935, No. 27330. [Class 52 (v)] A bracket for supporting an inverted bottle comprises a vertical member c provided with horizontal arms a, b, at top and bottom and adjustably secured in a clamp d which can be secured to a shelf or the like by means of jaws g and clamping screw h. A tube is screwed into the arm a and has a spring biassed rod i slidably arranged therein and provided at its lower end with a rubber disc or other element k which cooperates with the base of the bottle. A liquid measuring device o into which the mouth of the bottle fits has a projecting lug p which is slid between the arm band a lug p secured to the lower end of c, a spring pressed pin u secured to the arm b passing through a slot or recess in the lug p to hold the measuring device o in position. The clamp g may be divided horizontally into two separate parts each provided with an independent locking device for clamping it to c.
Patent GB-709140-A (GB)
Title: Improvements in or relating to electric contact springsets
Inventor: FRYDMAN EMANUEL
IPC: H01H50/58
Filed: 1951-11-22
Abstract: 709,140. Electromagnetic relays. AUTOMATIC TELEPHONE & ELECTRIC CO., Ltd. Nov. 17, 1952 [Nov. 22, 1951], No. 27375/51. Class 38(5) A contact springset has its movable springs 11 operated by notches 22 on a comb 18 and its fixed springs 10 supported by notches 34 on a comb 30, the combs 18, 30 being arranged side-byside and passing through an L-shaped aperture formed in the springs 10, 11. The apertures in each spring are identical, the fixed spring shown in Fig. 4 being made to serve as a movable spring by turning it over about the longitudinal axis so that the narrow part of the aperture co-operates with the notches 22 and the wide part receives, without engaging, the support comb 30. The comb 30 is fixed between rigid members 12, 13, Fig. 2 (not shown), the member 13 being additionally supported by a pin 16 bearing on a magnet yoke 14. The comb 18 is operated by an armature 16 pivoted at 17.
Patent GB-763172-A (GB)
Title: Improvements in or relating to brazing processes
Inventor: LLEWELYN GEIRIONYDD
IPC: B23K35/36
Filed: 1953-10-06
Abstract: A flux for brazing comprises sodium fluoride and cryolite with or without silica up to 20 per cent by weight.  The flux may have the following percentage composition: ..(a).(b).(c) .sodium fluoride.40-70.54.70 .cryolite.20-40.34.20 .silica.0-20.12.10  The melting point of example (b) is 900 DEG C. and that of example (c) is 1000 DEG C.  The constituents are ground into powder and made into a paste with denatured alcohol.  The silica may be added as flour to the cryolite before the addition of the sodium fluoride and grinding. The silica content of example (c) may be increased at the expense of the cryolite to obtain a melting temperature of 1100 DEG C. Specification 763,171 is referred to.
Patent GB-1413702-A (GB)
Title: Inorganic glasses
IPC: C03C3/32
Filed: 1973-06-11
Abstract: 1413702 Chalcogenide glass PLESSEY CO Ltd 21 March 1974 [11 June 1973] 27732/73 Heading C1M An inorganic glass consists of, in atomic per cent: A solid state light-emitting device comprises a planar solid state light emitting diode, and a member of the above glass having one surface contiguous with, and secured to, the said planar diode, the glass member having a substantially hemispherical shape which is such that the emitted light rays pass through the diode/glass interface and meet the glass/air interface at an angle of substantially 90 degrees so that internal reflections are minimized. The light-emitting diode may be of gallium arsenide (e.g. doped with Si or Zn) or gallium arsenide phosphide.
Patent GB-918669-A (GB)
Title: Fluid pumps or motors
Inventor: LEE DENIS ERNEST
IPC: F01B3/00
Filed: 1960-08-11
Abstract: 918,669. Reciprocating pumps. LUCAS (INDUSTRIES) Ltd., JOSEPH. July 27, 1961 [Aug. 11, 1960], No. 27805/60. Class 102(1). [Also in Group XXIX]. The valve plate 16 of an axial piston pump has arcuate ports 17 with which the cylinder apertures 15 communicate during rotation and which are connected to circular ports 18 on the opposite side of the plate by passages 19. Each port 18 has a sealing ring 21, loaded by a spring 22, which seals against the face 5a. The ports 18 are connected to ports 23, 24 which are appropriately connected to an inlet or an outlet.