baber/WOPTO huggingface dataset:
Patent GB-531204-A (GB)
Title: Improvements in radio direction finders
IPC: G01S1/02
Filed: 1939-06-30
Abstract: 531,204. Directive wireless signalling. STANDARD TELEPHONES & CABLES, Ltd., and EARP, C. W. June 30, 1939, No. 19112. [Class 40 (v)] Relates to means for producing and maintaining the necessary phase-shift of 90 degrees between the signals received on a directional and non-directional aerial when obtaining an indication of " sense." The phase-shift is secured by applying the signals to two loosely-coupled circuits in known manner, but the phasing is maintained by arranging that both sets of signals pass through the same number of tuned circuits before reaching the combining circuit. Fig. 1 shows the invention applied to a direction-finder of the kind described in Specification 484,590. The sense signal from the tuned circuit TC2 is loosely coupled through condensers C1, C2 to the circuit TC3 to introduce the 90 degrees phaseshift and this is maintained by arranging for the directional signals, from the aerial L to pass through the tuned circuit TC1, similar to the tuned circuit TC2, before reaching the combining circuit TC3. The tuned circuits in question are ganged together. In Fig. 2 the invention is applied to a:directionfinding system of the kind described in Specification 490,940. Signals from East-West and North-South aerials AEW and ANS, respectively, are applied to the fixed coils F<SP>1</SP>, F<SP>2</SP> of an indicator G, whilst those from a non-directive aerial AND are applied to the moving coil of the indicator through two circuits TC2 and TC3, which are loosely coupled through the condenser C2 in order to produce the required phase-shift of 90‹. The condensers of the four tuned circuits are preferably ganged together. As before the signals from the vertical aerial AND are passed through a tuned circuit TC2, whilst those from the two directional aerials pass respectively through the tuned circuits TC1, and TC11 before being combined through the coil L2 :in the mixing.: circuit TC3.
Patent GB-499730-A (GB)
Title: Improvements in and relating to liquid filled electrical insulating bushings
IPC: H01B17/34
Filed: 1938-06-28
Abstract: 499,730. Insulators. BRITISH THOMSON-HOUSTON CO., Ltd. June 28, 1938, No. 19149. Convention date, June 30, 1937. [Class 36] In a liquid-filled high-voltage bushing insulator having an expansion chamber 21 at one end thereof, to which chamber the liquid 19 filling the bushing has access through a pipe 20, the space above the liquid in the expansion chamber, which is sealed from the outer atmosphere, communicates through a pipe 25 with a second expansion chamber 26 within the insulating casing of the bushing. The chamber 26 and the space above the liquid in the chamber 21. contain gas such as dry air or nitrogen. In the construction shown the chamber 26 is formed by two coaxial metal tubes connected together at their ends and surrounding the lead through conductor 10. The tubes may or may not carry current. A drain tube 27 having a stopper 28 is provided to allow removal of liquid which may enter the chamber 26.
Patent GB-810746-A (GB)
Title: Improvements in burners for hat blocking presses
IPC: F23D14/10
Filed: 1956-06-20
Abstract: 810,746. Non-atmospheric gas burners for hat-blocking- press. BLEANBY, R. W. and KING, L. A. Feb. 15, 1957 [June 20, 1956], No. 19159/56. Class 75(1) A non-atmospheric multi-jet burner for a hat-blocking press comprises a length of metal tubing shaped to conform with the pattern of the heating ducts in the presspan and having at regular intervals along the lengths adapted to be located in the heating ducts, gas jets provided with a small gas outlet of accurately predetermined size to which gas is supplied without previous admixture of air (industrial gas jets). As shown, the lengths of tubing adapted to be located in the heating ducts of the press-pan each comprises a burner head 1, 2, each carrying a plurality of gas jets 5 screwed into tapped holes in the burner heads 1, 2, these latter being connected together and to a gas feed by pipes 7, which may be connected to one or both ends of the burner tube. In the case shown one end of the burner tube is closed by a screwed plug 8. The burner may be held in the press-pan by slides or spring clips engaging the horizontal lugs 3 on the burner heads 1, 2. In an alternative construction the burner comprises a U-shaped burner head, e.g. of cast iron, carrying an appropriate number of gas jets and provided with apertures at the ends and at the centre of the base of the U for connection of a gas supply pipe or for the insertion of plugs where no supply pipe is connected. The gas supply pipe may carry a clamp which may be fastened to an external part of the press.
Patent GB-1255542-A (GB)
Title: Pulse generating oscillator circuit
IPC: H03K3/30
Filed: 1969-04-15
Abstract: 1,255,542. Transistor oscillators; pulse generators. BENDIX CORP. 15 April, 1969 [24 April, 1968], No. 19171/69. Headings H3P and H3T. A pulse generator has the collector-emitter path of a transistor 11 in series with the primary 12 of a transformer 14, whose secondary 26 feeds a load through a diode 28 which conducts when the transistor is off and does not conduct when the transistor is on, and whose tertiary 19 is connected between the base and a point in a base bias circuit connected across the supply 10, that portion of the bias circuit between the said point and the low voltage terminal of the supply including a resistor 24 connected to the anode of a diode 22 across which is connected further circuit means such as a diode 23. The resistor 24 is small compared with a resistor 20 completing the bias circuit, and is variable to adjust the output power of the generator. The diode 22 is of silicon with a negative temperature coefficient, and improves starting of the oscillations. The diode 23 provides base current during the " on " period. The load connected to diode 28 includes capacitor 34 and a control spark gap 29 which breaks down at a certain voltage discharging C34 and supplying a pulse to a step-up transformer 30 whose secondary 32 drives a spark gap 33 for ignition in an i.c. engine. A diode 21 protects the e-b junction. In a second embodiment (Fig. 2, not shown) the primary (44) is in the emitter circuit, the transistor operating in grounded collector mode. The base bias circuit again has parallel oppositely poled diodes (47, 48) in series with a poweradjusting variable resistor (50) between the tertiary and the emitter; a resistor (46) is connected between the diodes and the positive supply. A diode (52) again protects the e-b junction, and a Zener diode (53) in series with another diode (54) provides a constant base potential if the supply voltage should vary. The secondary and load circuit is similar. A pulse suppression filter (37, 39, 40) is connected across the supply, and this may be included in the first embodiment.
Patent GB-1519253-A (GB)
Title: Dental equipment
IPC: A61C7/12
Filed: 1976-05-11
Abstract: 1519253 Orthodontic brackets O W ROGERS 11 May 1976 [12 May 1975] 19246/76 Heading A5R An orthodontic bracket comprises a body portion D and a base portion B having a recess C to receive a bonding composition for adhering the bracket to a tooth. The portions B, D may be integrally formed or formed separately and rigidly joined by e.g. rivetting, bonding or welding. A plurality of such brackets may be simultaneously fixed to a patient's teeth utilising an inflatable diaphragm 3. Initially a model of the patient's teeth is made and the brackets releasably secured, e.g. using wax, thereto in the required positions. The diaphragm 3 is secured to an impression tray 5 which is then filled with impression material and placed on the model where the impression material is allowed to set. The model teeth are then removed from the model/impression combination, e.g. by immersion in hot water, and air released from the diaphragm. Bonding material is placed in the recesses of the brackets and the impression placed over the patient's teeth. Air is admitted to the diaphragm to force the brackets against the teeth for bonding thereto.
Patent GB-484374-A (GB)
Title: Improved method of treating carriers for optically-reproducible sound and like oscillation records
IPC: G11B11/00
Filed: 1937-07-13
Abstract: 484,374. Optical sound - records. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, July 13, 1937, No. 19439. Convention date, July 13, 1936. Drawings to Specification. [Class 40 (ii)] [Also in Group XX] An oscillation record such as a record in which the track is cut mechanically into a recording layer through a covering layer has added to it one or more substances which in co-operation with one or more molecularly or collloidally dispersed substances which are present in the recording layer or which themselves form this layer, bring about a '' colouring " of the track owing to a chemical reaction. By '' colouring " is meant an opaqueness to the light to be utilized in reproduction or copying. In one example, lead acetate is incorporated in the recording layer, and, when this has been exposed by the cutting of the track, it is treated with an aqueous solution of ammonium sulphide, which produces black lead sulphide. Instead of lead acetate, another lead salt may be used, or a salt of another sulphide producing metal. Instead of ammonium sulphide, an alkaline sulphide or hydrogen sulphide gas may be used. Other ingredients may be used producing opaque compounds such as black mercury-ammonium nitrate. Prussian blue, indigo, the blueish-reddish violet compouud produced by reaction of alkaline copper sulphate on gelatine, and a coupling compound of amino-acid present in gelatine with diazobenzene sulphonic acid. The treatment may include exposure to light and physical or chemical development. For example, a track containing lead acetate is exposed to ultra-violet light, then treated with silver nitrate solution and subsequently with an acid reducing agent such as a citricacid-menthol solution. Nuclei, for example in the form of a colloidal silver solution, may he added to the lead acetate and gelatine. Alternatively, a normal chemical development of a silver solution may be employed.
Patent GB-1070772-A (GB)
Title: Improvements in or relating to tunnelling methods and shield type tunnelling machines
IPC: E21D9/06
Filed: 1964-05-11
Abstract: 1,070,772. Tunnelling machines. JAMES S. ROBBINS & ASSOCIATES Inc. May 11, 1964 [May 31, 1963], No. 19443/64. Heading E1F. A shield type tunnelling machine is so constructed that the machine spaces extending forwards from the heavy line PB can be maintained at an air pressure higher than existing in the tunnel to the rear of the machine, which is provided with air seals about the periphery of the shield S, an air tight bulkhead CS extending across the shield, enclosed conveyer means 32, 36 for conveying mined mineral rearwards through the bulkhead to hopper means 42, H 1 , H 2  provided with air locks 56, 58. Pressurized air is supplid to front of the machine through either pipe 70 or pipe 72.
Patent GB-301366-A (GB)
Title: A mechanical hare for greyhound racing
IPC: A63K1/02
Filed: 1927-08-23
Abstract: 301,366. Hiscocks, F. Aug. 23, 1927. Dog-racing apparatus.-The legs of a mechancal hare are moved to simulate a live animal by chain and sprocket drive from the running wheel. Each leg is formed in two parts, the upper part B being pivoted at B' to the body and at B<2> to the lower part C, the other end of which latter is pivoted at C<2> to a crank F on a spindle G' driven by wheels I and L and chain K<1> (or J, M, and K<2>) from the running wheel N. The hare is carried on a frame. P attached to a lure arm which may be driven by an electric or other motor.
Patent GB-147603-A (GB)
Title: Photographic camera for series-pictures
IPC: G03B17/50
Filed: 1920-07-08
Abstract: 147,603. Werkstõtte fur Feinmechanik Ges. May 18, 1918, [Convention date]. Void [Published under Sect. 91 of the Act]. Kinematograph apparatus.-In a kinematograph camera the spool box b, Fig. 2, is hinged to the front part a and has a safety shutter w on the gate u which is so mounted that it is closed when the camera is opened up to inspect the focusing window v. In the construction shown in Fig. 2, the shutter is connected to a lock r which has to be disengaged from the pin s to open the camera. In the modified construction shown in Fig. 3, the shutter w is normally closed by the spring q and is opened when the parts b, c are closed up by a projection on the part c which acts on the arm y.
Patent GB-401429-A (GB)
Title: Improvements in and relating to the removal of materials from reaction vessels
Filed: 1932-07-11
Abstract: The discharge of solid, liquid, or gaseous materials from high-pressure reaction vessels is effected by admitting successive portions of the material to a mechanical device (e.g. the cylinder of a reciprocating engine), in which they are expanded to a pressure approximating to that of the low-pressure chamber into which the material is thereupon discharged.  A portion of the material is however retained in <PICT:0401429/III/1> the cylinder and recompressed so that at the conclusion of the return stroke the pressure in the residual space of the cylinder approximates to that of the high-pressure vessel.  An auxiliary material may be admitted to the cylinder if necessary to ensure the attainment of this pressure.  The inlet and outlet valves may be positively operated, or they may open automatically on the attainment of the requisite pressures and then be retained open by positive means.  The Figure illustrates diagrammatically the cycle of operations.
Patent GB-592169-A (GB)
Title: Improvements in hydraulic shock absorbers for vehicles
IPC: F16F9/348
Filed: 1943-11-24
Abstract: 592,169. Hydraulic shock-absorbers. MONROE AUTO EQUIPMENT CO. Nov. 24, 1943, No. 19646. Convention date, Dec. 7, 1942. [Class 108 (iii)] Relates to a direct-acting hydraulic shockabsorber of the piston-and-cylinder type for vehicles in which flow of liquid between the cylinder A and a concentric reserve chamber B is controlled by compression and rebound valves 21, 22 in the piston 17 and by similar valves 65, 63 in a valve'assembly 11 at the lower end of the cylinder. According to the invention, the piston valve 21 is constructed to open just before or simultaneously with the base valve 63 and has one or more slots through which liquid may enter while the valve is closed. As shown, all the valves are disc valves, the upper piston valve 21 having a backing plate 23 of lesser area to permit the periphery of the valve to flex upwardly when liquid flows upwards through the piston apertures 20 on downward movement of the piston, while the valve 22 is acted on by a spring-pressed ring 26 which permits the periphery of the valve to flex downwardly when liquid flows downwards through the piston apertures 19. The valve 21 is laminated and the means for allowing limited resistance during compression comprises a spacer disc 50, Fig. 5, having one or more peripheral notches 51 constituting bleed openings which permit liquid to leak from the piston passages 20. The valve 63 of the base valve assembly 11 is held in closed position over passages 62 in the body 60 by a light spring 64 and a nut and screw device 67, 68 secures in position the valve 63 and the resilient valve 65, which controls passages 61 in the body. In operation, on compression of the shock-absorber, liquid in the passages 20 is first metered through the slots 51 in the disc 50 and as the pressure increases the valve 21 opens simultaneously with or just before the valve 65, while, on rebound, the valve 63 opens in advance of the valve 22.
Patent GB-937648-A (GB)
Title: An improved film mounting apparatus
IPC: G03D15/10
Filed: 1962-05-22
Abstract: 937,648. Mounting pictures &c. EASTMAN KODAK CO. May 22, 1962 [May 22, 1961], No. 19687/62. Class 11. Apparatus for mounting a piece of film 13 within an aperture 11 in a card 10 and in contact with an adhesive 12 exposed within the aperture has a magazine 24 for the pieces of film fixed above a mounting station 30 and an apertured card 10 is inserted through an aperture 38 in a plate 34 and along a plate 31 until it engages the arm of a microswitch 54 in a circuit controlling a vacuum-operated piston in a cylinder 75, causing a plunger 40 to be moved upwards through the aperture 11 to engage the lowest piece of film in receptacle 24, when a cam 58 on rocker arm 52 connecting plunger 40 to the piston rod 76 operates a switch 56 and cams 57, 59 operate switches 55, 57 to apply a vacuum to the head of plunger 40 so that as the plunger moves downward again it takes a single piece of film down on to the card. The further movement downward of plunger 40 is inhibited by a pin 48 engaging the lower end of a slot and springs 80 are extended as rod 50 moves downward and rollers 69, 70 mounted on a flexible leg 68 on a rocker member 64 are moved over the edges of the film to press it into engagement with the adhesive strips 12 on the card. When the plunger fails to pick up a piece of film a switch in the vacuum line closes and the vacuum to plunger 40 is shut off and an indicator lamp signifies to the operator that receptacle 24 no longer contains any pieces of film. To initiate a further cycle of operations the card is withdrawn from the mounting station permitting switch S4 to open and a stack of film is inserted in magazine 24. The cycle of operation will then recommence with the insertion of a card. Specification 827,056 is referred to.
Patent GB-197157-A (GB)
Abstract: 197,157. British Thomson - Houston Co., Ltd., (General Electric Co.). April 3, 1922. Index hands and pointers. - In galvano. meters and other instruments means are pro. vided for adjustable mounting the pointers or needles and for balancing the moving parts, the pivot shaft being furnished with h axially spaced holes or abut. ments and means being provided for resiliently and adjustably holding the pointer and a balancing rod in the holes or against the abutments. The pivot shaft 1 is shown fixed on the moving coil 5 and fitted with a removable pivot 2 cooperating with a jewelled bearing 3. A similar shaft is fixed on the lower part of the coil. The pointer 7 and balancing rod 11 are adjustable radially in holes at right angles to one another and are secured by a resilient saucer-shaped disc 12 provided with a groove 13 to receive the pointer and notches 14 to engage the rod 11. The pointer carries an adjustable weight made of a few turns of wire. on a sleeve. The rod 11 may be fixed and provided with one or more sliding weights. The pointer 7 and rod 11 may be slotted to fit over the shaft against abutments.
Patent GB-1451672-A (GB)
Title: Method of sealing sliding contact surfaces in a track chain
IPC: B62D55/088
Filed: 1974-05-06
Abstract: 1451672 Seals RHEINSTAHL AG HANOMAG BAUMASCHINEN 6 May 1974 [14 May 1973] 19785/74 Heading F2B [Also in Division B7] The links 3, 4 of the track chain of a tracked vehicle are sealed to the bush 2 by seals 5, 6 moulded in situ from a settable sealing compound injected into the sealing grooves through ducts 8 and 9. The contact surfaces of the bush are covered with lacquer, grease, wax, paper on a plastic or metal foil, to prevent the sealing compound from sticking to them. The ducts 8, 9 are subsequently plugged. The seals 5, 6 may be silicone rubber and the bush 2 may be sealed to the link pin 1 by a further seal (7, Fig. 2, not shown).
Patent GB-611217-A (GB)
Title: Improvements in or relating to centrifugal electric furnaces
IPC: C03B19/04
Filed: 1945-08-01
Abstract: 611,217. Making glass tubes. SOC. ANON. DES MANUFACTURES DES GLACES ET PRODUITS CHIMIQUES DE ST.-GOBAIN, CHAUNY, & CIREY. Aug. 1, 1945, No. 19803. Convention date, April 10, 1941. [Class 56] [Also in Groups XI and XII] A centrifugal furnace for the fusion of refractory materials in vacuo and particularly intended for the manufacture of tubes of large diameter in transparent silica glass, comprises a horizontal cylinder 1 rotated by a motor 6 and belt 7 and containing the charge, means, e.g. a graphite resistance 15 for heating the charge by radiation, and a stationary outer casing 2 in which the vacuum is produced. The casing 2 is closed at the ends by caps 8, 9 insulated from the casing by rubber joints 12. Supply cables 10, 11 are attached to the caps which carry stationary feeders 14 for the resistance 15, the feeders being connected to the caps by flexible members 16, 17, e.g. in the form of flat hollow ellipsoids of metal, which act as buffers for the expansive forces, and permit adjustments of the resistance. The motor 6 is within the space which is exhausted through the passage 5. The cylinder 1 is spaced from the feeders 14 by removable annular walls which retain the charge within the cylinder. The cap 8 and associated current feeding means, the resistance and the annular wall are removed to permit withdrawal of the glass tube. In a modification the motor 6 is outside the casing 2, the cylinder 1, having at one end, an enlarged part which encircles the current feeding means and projects through the end of the casing 2, sealing means being provided. The motor-driven belt works on an end of the projecting part of the cylinder 1, the end being of reduced diameter. Specifications 400,020 and 431,004, [Group XI] are referred to.
Patent GB-667041-A (GB)
Title: Process for the stabilisation of halogen-containing macromolecular substances, substances thus stabilised and articles containing such substances
IPC: C08K5/21
Filed: 1949-07-28
Abstract: Halogen-containing polymers, e.g. polyvinyl chloride, chlorinated polyvinyl chloride, polyvinylidene chloride, and copolymers of vinyl chloride and vinylidene chloride are stabilized by mixing them with a composition comprising a basic acting substance and an arylurea containing at least one phenyl group substituted by at least one non-hydrocarbon substituent. Specified arylureas are ethoxyphenylurea, N,N1-di-(p-ethoxyphenyl) urea, 4-acetophenylurea, 2 - chlorophenylurea, 4 - carbethoxyphenylurea, 2,4-dinitrophenylurea, 4-diethylaminophenylurea, N-methyl-N-p-methylaminophenylurea, mixtures of ortho- and para-methoxyphenylureas and ortho- and para-ethoxyphenyl ureas. The basic substances may be carbonates, bicarbonates and hydroxides of the alkali or alkaline earth metals, e.g. sodium or magnesium, magnesium oxide, basic phosphates, alkali salts of weak organic acids, and organic amines.  The polymers may contain a plasticizer, e.g. dioctyl phthalate, and the stabilizing compounds may be added, as such, in solution or suspension during the preparation or processing of the polymer, or to the finished polymer. If desired, other stabilizers such as an aryl glycidyl ether may be included in the composition.  German Specification 746,081 is referred to.
Patent GB-734463-A (GB)
Title: Stabilising plane for aircraft
IPC: B64C1/00
Filed: 1953-07-17
Abstract: 734,463. Controlling aircraft. REID, A., and REID, R. U. July 17, 1953, No. 19858/53. Class 4. An aircraft of the all-wing type without tail control surfaces is provided with a stabilizer K which extends across the wing from one side of the centre body J to the other and is mounted on a spanwise pivot located in the wing and centre body, adjacent the leading edge of the wing. The stabilizer has a centre portion I depressed below the main under-surface and faired with the underside of the centre body. The stabilizer may be used as an air-brake or to increase lift and the heel-like portion I provides longitudinal stability. A ground engaging wheel G.A. is mounted at the trailing edge of the stabilizer.
Patent GB-239682-A (GB)
Title: Improvements relating to chimney cowls
IPC: F23L17/02
Filed: 1925-04-09
Abstract: 239,682. Parr, R. April 9, 1925. Chimney tops. - A chimney cowl comprises a stem 1, a conical hood 2 mounted thereon, and a baffle 3 suspended from a strut 4 in the hood 2 by means of a rod 7 having an enlarged head 6. The rod 7 passes loosely through a hole in the strut 4 so as allow the baffle 3 to be swung laterally. A reflector plate 5, which may be fluted, is mounted on the stem 1 below the hood 2. Reference has been directed by the Comptroller to Specifications 16983/06 and 8998/14.