baber/WOPTO huggingface dataset:
Patent GB-951422-A (GB)
Title: Improvements in or relating to the formation of light-diffusing coatings on vitreoussilica bodies and devices incorporating such coated bodies
Inventor: MOORE JOHN ALFRED
IPC: C03C17/23
Filed: 1961-11-23
Abstract: A method of forming a light-diffusing coating on a body of light transmissive vitreous silica includes acid-etching at least part of the surface of the body, coating the etched surface with a suspension of powdered titanium dioxide or silicon dioxide in a silicone resin, and finally heating the body to a temperature sufficient to decompose the resin and cause a layer of titanium dioxide or silicon dioxide particles to be bonded to the etched surface.  An open ended vitreous silica tube, for use as the envelope of an electric incandescent lamp, is degreased with chromic acid, rinsed, dried and coated on its outer surface with a nitrocellulose lacquer.  The lacquered tube is then immersed in an acid fluoride solution to etch its unprotected inner surface, washed, the lacquer coating removed and the tube dried.  The tube is then degreased with toluene, redried and coated internally by sucking up a medium comprising titanium dioxide particles suspended in a solution of a silicone resin in trichloroethylene. The coated tube is air dried and then baked at 1000 DEG  C.  After cooling any excess unbonded titanium dioxide is removed by washing with water.
Patent GB-1476743-A (GB)
Title: Device for protecting a inverter fed by an intermediate direct current circuit
IPC: H02M7/521
Filed: 1974-09-27
Abstract: 1476743 Inverting; frequency changing BBC BROWN BOVERI & CO Ltd 27 Sept 1974 [29 Sept 1973] 42092/74 Heading H2F  In an inverter of the intermediate D.C. type, comprising a plurality of pairs of series-connected thyristors 11 ... 16 connected across D.C. lines, all the thyristors 11 ... 16 are arranged to be simultaneously triggered in the event of simultaneous conduction of any pair, a diode D and ohmic resistor R being connected across the D.C. lines so as to damp oscillation caused by the smoothing capacitor 7 and circuit inductances. As described, the D.C. source 2 may be an uncontrolled rectifier bridge and feeds smoothing capacitor 7 via a choke 3. The main thyristors 11 ... 16 are turned on sequentially by either short or long pulses and subsequently turned off either by thyristor 17 or by commutating thyristor (not shown). In the event of simultaneous conduction of the thyristors of any one pair, all the main thyristors (and possibly auxiliary thyristors 17, 26 ... 28) are triggered, the resulting oscillation beinb damped by diode D and resistor R, the circuit having a damping factor of 0À5. This prevents reverse charging of capacitor 7 so that an electrolytic capacitor may be used.
Patent GB-1306602-A (GB)
Title: Benzenesulphonamide derivatives
IPC: A61K31/415
Filed: 1970-09-03
Abstract: 1306602 Acylamino- and thioacylaminoalkyl - phenylsulphonyl - (imino - imidazolidines) CIBA-GEIGY AG 3 Sept 1970 [4 Sept 1969] 42106/70 Heading C2C [Also in Division A5] Novel, therapeutic compounds I (including salts thereof) where R 1  is C 1  to C 6  alkyl, C 3  to C 5  alkenyl, C 5  to C 8  cyclo-alkyl or -alkenyl, or phenalkyl of up to 9 C, R 2  is H, Me or Et, R 3  is C 1  to C 6  alkyl, m is 2 or 3, n is 1 to 4, Y is O or S and Z is O, S, SO or SO 2 , are made by reacting II with R 3 .Z.C n H 2n C( :Y)OH or with a reactive, derivative thereof (including, e.g. dithiocarboxylic acid esters). Methoxydithioacetic acid benzyl ester is prepared by interacting hydrogen sulphide and methoxythioacetamido benzyl ester hydrochloride which is, in turn, prepared by interacting methoxyacetonitrile and benzylmercaptan in the presence of hydrogen chloride.
Patent GB-875322-A (GB)
Title: Synchronising arrangement for a change-speed gear
IPC: F16D23/04
Filed: 1958-12-31
Abstract: 875,322. Positive clutches. FICHTEL & SACHS A.G. Dec. 31, 1958 [Jan. 23, 1958], No. 42167/58. Class 80 (2). Dog clutches 9, 10 for connecting freelyrotatable gear wheels 1, 2 to their shaft 3 are synchronized by friction discs 7, 8 splined to the shaft 3 and pressed axially into engagement with the gear wheels by an inner sleeve 5, splined to the shaft 3, to which during engagement initial axially thrust is imparted by an outer clutch sleeve 4 splined to the inner sleeve 5 and yieldably axially positioned thereon in neutral and engaged positions by split ring 12 engaging grooves 11 in the sleeve 5. In Fig. 2 (not shown), metal or plastic friction facings are carried in recesses in the gear wheels.
Patent GB-1088701-A (GB)
Title: Air guide structure
IPC: F24F1/031
Filed: 1964-10-16
Abstract: 1,088,701. Air conditioning. HUPP CORPORATION. Oct. 16, 1964 [Oct. 16, 1963], No. 42271/64. Heading F4V.  In an air conditioner having an evaporator 22, blower 24 and manually adjustable louvres 42, there is provided a set of oscillatable vanes 56 formed integrally with a supporting structure secured by screws 60 to a support 62A. The vanes are connected together by a link 62 and an end vane is connected to a driving link driven by an electric motor through a reduction mechanism. The vanes move from one end position to the other end position every 10 seconds. The link 62 and/or the driving link may be separate members connected to the vanes. The integral hinges between the vanes and the integral supporting structure are formed by reducing the thickness of the material to between 0.015 to 0.020 inch. The vanes and supporting structure are made of a plastic. The complete unit has a removable front panel 26 of a plastic or thin metal, fixed louvres 34 in a lower intake section and a link 50 connecting together the manually adjustable outlet louvres 42. The usual compressor, condenser and blower for the condenser are also provided as part of the cooling system. A control panel (36) is provided at one side of the panel 26. The motor 69 is only energized when the fan 24 is in operation, and provision is made in the control circuits to stop the motor with the vanes stationary in any desired position.
Patent GB-1215996-A (GB)
Title: Polyurethane polyvinylidene chloride composition
IPC: C09J175/04
Filed: 1968-09-06
Abstract: 1,215,996. Polyurethane laminates. GOODYEAR TIRE & RUBBER CO. 6 Sept., 1968 [2 Oct., 1967], No. 42508/68. Heading B5N. [Also in Division C3]  Substrates may be adhered together using an adhesive composition comprising a mixture of 5 to 50 parts by weight of a polyvinylidene chloride, which is soluble to the extent of 5 to 35 parts to 100 parts by weight of methyl ethyl ketone at 75‹ F. and 100 parts by weight of a polyurethane prepolymer formed by the reaction of a polyester polyol of M.W. 300 to 6000 with sufficient organic polyisocyanate to give from 0À5 to 10% by weight, based on the weight of prepolymer, of free isocyanate groups. The composition may contain 5 to 100 parts by weight of a solvent for the polyvinylidene chloride per 100 parts by weight of polyvinylidene chloride plus polyurethane prepolymer. A cross-linking agent for the prepolymer may be added to the composition. In examples nylon fabric substrates are adhered to each other. The adhesive compositions may also be used to adhere a polyurethane, a polyurethane prepolymer or partially cured polyurethane to each other or to other suitable substrates.
Patent GB-1530938-A (GB)
Title: Internal shoe drumbrake
IPC: F16D51/20
Filed: 1976-10-13
Abstract: 1530938 Internal shoe-drum brakes; slackadjusting NISSAN MOTOR CO Ltd 13 Oct 1976 [13 Oct 1975] 42564/76 Heading F2E The brake comprises an actuator, e.g. a service brake actuator 16, Fig. 1, engaging one pair of adjacent ends of a pair of brake shoes 10, 12, biased towards each other by return springs 18, 20, a mechanically-operated lever 28, Fig. 2, having an arm carrying a supporting pin 32 and positioned for operative engagement at 34 with one of the shoes, e.g. 10, an adjustable-length strut 40 having a tubular part 42, one of whose ends is in operative engagement with the other shoe, e.g. 12, and a threaded part 38 pivotally mounted on the supporting pin 32 and received in the tubular part 42, a pawl arm 48 pivotally mounted on the supporting pin 32 and carrying a pawl 50, Fig. 3, a ratchet wheel 46 rotatably mounted on the strut threaded part 38 and engaged by the pawl 50 for effecting adjustment of the strut length, and biasing means, e.g. compression-and-torsion spring 52, for biasing the pawl into engagement with the ratchet wheel and the pawl arm 48 in one direction about the supporting pin 32 towards a predetermined angular position; the adjustable strut includes a stopper 56, Fig. 3, formed on the threaded part 38 to limit movement of the ratchet wheel 46 to define the minimum strut length. The flange forming the stopper 56 may be replaced by two diverging projections. Thus, mounting of the assembly of shoes, return springs and strut within the drum is facilitated by turning nut 46 until it abuts stop 56 to provide maximum shoe-drum clearance. After mounting, the length of the strut can be adjusted appropriately by operation of the handbrake.
Patent GB-1041438-A (GB)
Title: Automatic control system
IPC: G05D23/22
Filed: 1964-10-21
Abstract: 1,041,438. Automatic temperature control of furnaces. LEEDS & NORTHRUP CO. Oct. 21, 1964 [Nov. 7, 1963], No. 42863/64. Heading G3R. An automatic control system for controlling the value of a physical variable, such as the temperature of a furnace, comprises two bridge circuits which are unbalanced when a deviation occurs in the physical variable the system being effective to restore the variable by a series of pulses. The temperature of a furnace 10 is detected by a thermocouple 13 which applies a voltage to a measuring circuit 14 and a recording device 19, 20. The thermocouple voltage is further applied to a detector 15 which, inter alia serves to adjust a contact 16a relatively to slidewire 16 so that upon a deviation of the furnace temperature from the desired value, set by means of a control 18c, the bridge circuit 22 becomes unbalanced. With no feedback from the bridge circuit 27 an output then appears from an amplifier 55 to energize a relay 56. Should the deviation in temperature be low the relay 56 is energized to close contacts RL whereupon motor 42 is energized to open a valve 12 in the fuel supply to the furnace 10 to restore the temperature thereof to the desired value. Closure of contacts RL of relay 56 also energizes heaters 34, 35 associated with temperature sensitive resistors 30, 32 forming part of the feedback bridge circuit 27. The thermal inertia of resistor 30 is lower than that of resistor 32, there upon energization of heaters 34, 35 the bridge circuit 27 becomes unbalanced so that the signal from this bridge, taken from an adjustable resistor 48 to provide proportionality, gradually increases until it equals the signal from the bridge 22. Relay 56 then releases, motor 42 and heaters 34, 35 become de-energized. Upon de-energization of the heaters 34, 35 the feedback signal decays whereupon the resultant.signal unbalance to the amplifier 55 again closes contacts RL and the cycle repeats until the furnace is restored to the desired temperature. Should the temperature derivation be high contacts RH of relay 56 close to energize heaters 36, 37 associated with resistors 31, 33 in the bridge circuit 27. Adjustment of the operating conditions of the bridge 27 is made by means of a gauged control on variable resistor 46, 50, 51. In a further embodiment the bridge circuits 22, 27 are incorporated into a single bridge.
Patent GB-981773-A (GB)
Title: Resins and laminates produced therefrom
IPC: C08G63/553
Filed: 1963-10-31
Abstract: A self-cross-linkable, normally solid, non-crystalline polyester resin comprises the esterification product of (A) 34 to 49 mol. per cent of one or more cycloaliphatic dihydric alcohols, (B) 1 to 16 mol. per cent of one or more asymmetrical linear aliphatic dihydric alcohols, (c) 30 to 49 mol. per cent of fumaric and/or itaconic acid and (D) 1 to 20 mol. per cent of one or more cycloaliphatic dicarboxylic acids, wherein the total mol. per cent of all components is 100%.  Components (A), (B) and (D) mentioned are cyclohexanediols, cyclohexanedimethanols, hydrogenated bisphenol A; butylene glycols, pentanediols, hexanediols, octanediols; and hexahydrophthalic acids, respectively. Copolymerizable monomers are not required to produce the non-crystalline polyester resin, but may be present if desired. Similarly free radical producing catalysts and accelerators may be used if desired.  Lists of conventional catalysts and comonomers are given.  In the examples the polyesters which are used to make laminates, are derived from 1,3-butylene glycol, fumaric acid, 1,4-cyclohexanedimethanol and hexahydrophthalic anhydride.
Patent GB-1113884-A (GB)
Title: Production of metal oxide particles
Inventor: WEINBERG FELIX JIRI
IPC: C01B33/18
Filed: 1964-10-22
Abstract: To produce small particles e.g. about 0.15 m  of metal oxides, the vapour phase oxidation of metal halide particles, preferably chlorides, is carried out in the presence of an electric field e.g. of strength at least 6 x 103, preferably at least 104 volts/metre, formed between at least 2 electrodes maintained at different potentials, preferably located so that no substantial electric discharge occurs between them.  One electrode may be a plate or ring inside the wall of the reactor or outside it if the wall is non-conducting, and the other may be located in the path of the reactants through the reactor, and preferably they are downstream of the reactant inlets when they are all inside. Alternatively, the reactant inlet may form one of the electrodes. The heat liberated by the passage of any current is preferably < 1%, e.g. < 0.5% of the heat liberated by the chemical reaction. The metal oxide particles produced may be white, e.g. TiO2, ZrO2, SiO2 or Al2O3 or coloured, e.g. Fe2O3.
Patent GB-1100686-A (GB)
Title: Improvements in reinforcing strands for rubber and elastomeric materials
Inventor: BIRCH NORMAN JOHN
IPC: B60C9/00
Filed: 1963-11-01
Abstract: <PICT:1100686/C3/1> A reinforcing strand for elastomeric materials 6 comprises a central yieldable support 4 surrounded by at least one annular layer of wires 3 each having a diameter of from 0.004 to 0.040 inch and being wound around the core with a lay of from 50 to 1000 times the wire diameter, there being a gap between at least two adjacent wires in the, or each, annular layer in the peripheral direction of the resulting strand.  The support 4 may be a filament or thread of natural or synthetic fibrous material or an extruded rod of uncured rubber.  If the support is of rubber it may be reinforced with a thread or filament 5 of a natural or synthetic fibrous material or a wire. The strand is embedded in the material 6 whilst the rubber support 4 and material 6 are both in an uncured state and thereafter both are cured.  The strand illustrated may be surrounded by one or more additional annular layers of wire, there being a layer of yieldable material between each pair of adjacent layers of wire and at least one gap between adjacent wires of each of these additional layers.  The strand may be used to reinforce vehicle tyres and transmission belts.
Patent GB-1058077-A (GB)
Title: Type cylinder and printer
IPC: B41J1/54
Filed: 1965-10-12
Abstract: 1,058,077. Typewriters &c. MITE CORPORATION. Oct. 12, 1965 [Nov. 6, 1964], No. 43332/65. Heading B6F. Type-cylinder construction.-A type-cylinder is formed by a series of strips 92 with a rounded base retained on a fluted shaft 74 for axial sliding movement by a circlip. The rounded part 90 may be integral with the strip 92 or may comprise a rod secured - to the strip. Hard plastic, or metal may be used. The circlip may be accommodated in a central groove, Fig. 1 (not shown), or at each end, Fig. 8 (not shown). Aligning for impression.-The tilting movement afforded by the rounded construction means that the type face 94 is automatically aligned flush with the paper upon hammer impact. A light spring 42, Fig. 1 (not shown), bears in a groove in the type-faces. Type-cylinder machines.-The cylinder is employed for printing on page-width material from data transmitted by teleprinter or computer signals or from data on a record tape. When printing on page-width material the type-cylinder is moved in letter-space direction in addition to the axial selection movement.
Patent GB-968052-A (GB)
Title: Indicating devices for gunnery target practice
IPC: F41J5/06
Filed: 1962-11-19
Abstract: 968,052. Valves. SVENSKA AEROPLAN A.B. Nov. 19, 1962 [Nov. 20, 1961], No. 43622/62. Heading F2V. [Also in Division F3] A control valve 19 for use in apparatus for target gunnery practice (Division F3) consists of a solenoid valve including a valve casing 20 having a cylindrical valve chamber 21 in the bottom of which there is a hollow body 22, containing a conic valve seat 23 at its upper extremity, and communicating through a channel 25 and a tube connection 26 with an inlet pressure line 13. An outlet pressure line 13 communicates via a tube connection 28 and an outlet channel 27 with the conic valve seat of the body 22. The solenoid 30 has a displaceable armature 31, spring loaded the lower portion 32 of which carries a valve body 36 sealing held against the valve seat 23 of the body 22. The valve is electrically operated by a transistorized flip-flop circuit (Fig. 4, not shown). A diaphragm may be inserted between the lower part of the armature and the valve easing to prevent the solenoid being contaminated by the material passing through the pressure lines.
Patent GB-1464867-A (GB)
Title: Servo boosters
IPC: B60T13/569
Filed: 1973-09-18
Abstract: 1464867 Vacuum servo-boosters GIRLING Ltd 16 Sept 1974 [18 Sept 1973] 43683/73 Heading F2F A power diaphragm 24 of a booster is actuated by differential pressure controlled by valve means, and is supported by a plurality of radially extending fingers 51 held in regularly, circularly spaced and radially fixed locations mechanically coupled to an annular fulcrum plate 90 providing a fulcrum for finger deflection and coaxially mounted on an output rod 92. When not actuated, a chamber 26, connected to a vacuum source, communicates via a passage 82 an opening between a seat 72 and an axially flexible movable member 70, a passage 86 with a chamber 28 on the other side of the diaphragm. Upon actuation an input member 48 closes the opening and then opens communication between the chamber 28 and atmosphere by movement of a seat 74 from the member 70. Diaphragm movement acts on the fingers 51 so that they pivot about the plate 90 to transmit reaction to a thrust member 46 and the input member 48. Fig. 1a shows a lug 120 on each finger 51 gripping the outer periphery of the plate 90; Fig. 2a shows a ring 122 having lugs 124 extending between respective fingers 51, each finger having a recess 128 on each side; Fig. 3a shows a ring 130 having a pair of lugs 132a, 132b extending through each finger 51, each latter lug extending over a respective recess 131 in the periphery of the plate 90.
Patent GB-917640-A (GB)
Title: Improvements in or relating to electric circuits employing transistors
Inventor: GRANT JAMES
IPC: H03K3/2893
Filed: 1959-12-23
Abstract: 917,640. Transistor switching circuits. GENERAL ELECTRIC CO. Ltd. Dec. 15, 1960 Dec. 23, 1959], No. 43685/59. Class 40 (6). [Also in Groups XXXVI and XXXIX] A circuit for indicating whether an input voltage is above or below a predetermined range and more particularly for indicating whether a telephone pilot signal is outside a given range, comprises a transistor having a control electrode to which the signal is applied and two output electrodes connected respectively through resistors to opposite terminals of a stabilized supply circuit, the transistor being arranged so that when the input signal falls outside the range the numerical value of the output voltage of the transistor exceeds a predetermined value and the control is effected. Fig. 2 shows a transistor 8 having emitter and collector electrodes connected through resistors 14 and 16 to a supply voltage stabilized by a Zener diode 17. The output signal is applied to the base of transistor 9 of a comparator circuit 9, 10 having a relay connected in its collector circuit. As the instantaneous value of the input voltage at 11 increases negatively from zero the collector voltage becomes less negative, following the curve 23 of Fig. 3. This decrease continues until the negative input voltage becomes equal to the collector voltage at point 24, after which the collector diode becomes forward biased and the collector potential increases negatively with the input signal, following the right-hand part of the curve 23. It is arranged that when the input signal is at the desired level the transistor operates in the region of 24 below the level 25. If the input signal level is outside this region the collector voltage of transistor 8 is sufficient to cause the conducting conditions of transistors 9 and 10 to change-over so that relay 19 is operated and an alarm such as a buzzer or lamp is brought into action. The relay could alternatively be operated by a further transistor controlled by the output circuit of transistor 9 or transistor 10.
Patent GB-932065-A (GB)
Title: Thread rolling machine
IPC: B21H3/06
Filed: 1960-12-20
Abstract: 932,065. Rolling screw-threads. HARTFORD SPECIAL MACHINERY CO. Dec. 20, 1960 [July 19, 1960], No. 43712/60. Class 83 (4). In a screw-thread rolling-machine in which a reciprocating platen 18 is mounted on an inclined table 13, Fig. 3, the supply of blanks from gravity feed tracks 66 is controlled by a pivoted arm 80, carrying a finger 83 which operates both as a gate to release each blank and as a pusher for wedging each blank into its starting position under the edge of the fixed platen 17. The platen 18 is reciprocated by a crank-wheel 50 through a crank-pin 63 and connecting-rod 60, the pin 63 having adjustment by eccentric 128 for changing the timed relationship of the platens. The arm 80 is oscillated by a cam 95 on the crank-wheel 50 through a pivoted follower 98 and link 102 which over one portion of the cam 95 act to retract the finger 83 so that it releases a blank. When the follower 98 engages a recessed portion of the cam 95 the finger 83 is urged forward to wedge the blank in position by a spring 105 attached between the follower 98 and a pin 106 on the table 13. Means for preventing operation of the cam 95 during setting &c. is provided by a releasable clamp 117 which normally holds the pivot 99 for the follower 98 in a fixed position on the end of an arm 100. Stops 90, 91 limit the movement of the finger 83 in the wedging position.