baber/WOPTO huggingface dataset:
Patent GB-575855-A (GB)
Title: Improvements in and relating to electric circuit breakers having arc-extinguishing devices
IPC: H01H33/91
Filed: 1944-04-17
Abstract: 575,855. Air-blast switches. BRITISH THOMSON-HOUSTON CO., Ltd. April 17, 1944, No. 7035. Convention date, April 17, 1943. [Class 38 (v)] An air-break circuit-breaker comprises a fixed contact structure 1 consisting of main contact 11, transfer contact 12, and arcing contact 13, all connected to stud 3, and a movable contact structure 2 consisting of main, transfer, and arcing contacts 8, 9, 10 respectively, connected through arms 20, pivoted at 4, to stud 5. When the rod 6 is moved downwards, the arms 20 to which it is pivoted at 7, are moved anti-clockwise. Contact 8 is fixed rigidly to arms 20, contact 9, which is urged in a clockwise direction and between the limits of stops 26, 27, by spring 23, is pivoted at 22 to arms 20. Contact 10 is insulatingly pivoted at 22, being fixed to arms 30 which, extending on either side of plates 20, are joined together by plate 31 which is connected to stud 5 by spring conductor 32. A spring eye bolt 34 fitted with lock-nuts 37, is pivoted at 7 and passes through insulating bearing 36 in plate 31, thereby biasing the contact 10 in a clockwise direction. When the breaker is opened, the arc formed at contacts 10, 13 is blown into the arc-chute 14 by blow-out coils 15-17, 15a-17a. To enable low-current arcs to be extinguished, a piston 40, operating in cylinder 41, is connected to a tubular piston rod which at its other end terminates in an expanding triangle-shaped nozzle 45. The rod is pivoted to contact 9 at 9a in such a way that the air-jet from the nozzle always blows across the arcing contacts. Specifications 537,311, 541,612, and 562,429, and U.S.A. Specification 2,280,616 are referred to.-
Patent GB-400494-A (GB)
Title: Improvements in and relating to a signalling device for automobiles or like vehicles
IPC: B60R16/00
Filed: 1933-03-08
Abstract: 400,494. Actuation of switches. PETTERSSON, G. F. and ISANDBERG, T. W., Borlange, Sweden. March 8, 1933, No. 7046. [Class 38 (v).] A signalling device'for an automobile or like vehicle of the type in which a switch is operated to interrupt the ignition circuit and simultaneously to close one or more signalling circuits, comprises a casing 1 containing a displaceable control member held normally between leaf - spring contacts 2 .. 5. The member comprises a metal rod 14 with an insulated portion 17 movable within an insulated sleeve 13, and contacting with a metal ring 8. On closing normal switches 12 current flows from a battery 6 to a hooter 18, and through the metal ring*8 to headlights 11, ignition means 9, and a taillamp 10. On pulling, as in an emergency, an actuating member 15 attached, for example, to the wrist of the driver, so as to displace the rod 14 against the action of a spring 16, contact is made between the rod and the metal ring 8 to connect up the battery, 'the rod, the springs 16, 4, and leads 21, 21a with the hooter, red lights in the headlamps, and a red light 22. A stronger pull on the control member causes a flange 24 to pull the sleeve 13 free of the contacts 4, 5 and the ring 8 to move. free of the contacts 2, 3, so as to break the ignition circuit and the normal lighting and hooter circuits. The springs 4, 5 then make contact to maintain the red lights in the headlamps, the lamp 22, and the signalling circuit to the hooter. A door 23À is provided to restore the apparatus to normal working order.
Patent GB-818348-A (GB)
Title: Process for producing perforated or contoured plastic sheets
IPC: B29C67/00
Filed: 1957-03-04
Abstract: 818,348. Moulding plastic sheet. LUNDIN, O. March 4, 1957 [March 9, 1956], No. 7107/57. Class 87(2). A plastic transformed into liquid or pastelike form is applied through a stencil onto a support, to which the plastic does not adhere, to form a film having irregular contours and/or perforations, whereupon the film is converted into the solid form and the plastic sheet thus obtained is separated from the support. As shown, liquid or paste-like plastic material 8 to form the perforated film 9 is supplied to a moving endless mat stencil 4 just in front of the doctor blade 7, and is forced by the doctor blade through the stencil down onto the belt 1 which is thus coated with a patterned layer of plastic. Then stencil 4 is provided at its edges with jagged or wavy strips of pasted sheet metal and on its remaining surface with sheet pieces. The stencil enters under the doctor blade at a small angle to the belt 1 and leaves the contact point with the belt at a relatively large angle. The plastic mass and belt pass through an oven 10 in which the plastic is solidified, then under a cooled roller 11 before being wound on a wooden or pasteboard roller 12 which is driven over a friction clutch so that the film is kept stretched during the winding. If desired, a force may be applied to the cooled roller 11 so that the sheet is calendered. The cooled roller may also be patterned so that the sheet is provided with a patterned surface structure. In a modification, the process is carried out discontinuously by placing a stencil of pasteboard on a sheet metal support and by means of a doctor blade polyvinyl chloride paste is drawn over the stencil so that the paste penetrates the openings in the stencil. The stencil and metal sheet are heated to 160 to 180‹C. until the polyvinyl chloride is gelatinised. After cooling, the perforated or contoured sheet or sheet pieces are drawn off the plate.
Patent GB-554300-A (GB)
Title: Improvements in sensitive photographic materials
IPC: G03C1/74
Filed: 1941-09-10
Abstract: 554,300. Sensitive photographic materials. KODAK, Ltd., BATLEY, A., SOPER, A. K., and BLABER, M. P. W. (Eastman Kodak Co., Wynd, C. L. A., and Lane, G.T.). Sept. 10, 1941, Nos. 7152/43, 7153/43 (both divided out of 554,292), and 7158/43 (divided out of 557,109). [Class 98 (ii)] A metal or other support is sensitized by transferring thereto a sensitive emulsion layer stripped from another support. A latent image may be formed in the emulsion layer before or after stripping. A sensitive silver salt emulsion layer temporarily held on another support may be caused to adhere on its outermost side to the metal or other support by means of an adhesive layer first coated on the metal or other support and the temporary support is simultaneously or subsequently dry-stripped off. Alternatively, the adhesive layer may be coated on the outermost side of the emulsion layer. The temporary support may be left as a protective layer until the material is required for use. The adhesive layer may be a layer which can be rendered adhesive by heat or by treatment with a softener. A varnish layer may be applied to the sensitive side of the stripping material before it is caused to adhere to the metal by the adhesive layer. Adhesive layers may be coated both on the emulsion and on the metal. Supports other than metal are concrete, hard sheets of plastics, and tracing cloth. In an example, paper is coated with a solution of beeswax in trichlorethylene, then with a process-type emulsion, and then with a lacquer prepared by dissolving a mixture of cellulose nitrate, ester gum, dibutyl phthalate, and formamide in a mixed solvent comprising acetone, butyl acetate, butyl alcohol, and amyl acetate. The metal support may comprise anodized polished aluminium coated with a lacquer prepared by dissolving a mixture of cellulose nitrate, ester gum and dibutyl phthalate in a mixed solvent comprising ethyl acetate and n-butyl acetate. Before use, a softener solution comprising industrial spirit and the mono-methyl ether of ethylene glycol is applied to either or both lacquer surfaces, and the two are pressed into contact. After curing for 24 hours, the paper is stripped off. For photolithography, the emulsion should have a low melting point, e.g. below 160‹ F. To facilitate writing on the material, a matting material may be incorporated in the surface or a matt over-coating layer may be provided. The metal sheet may be rendered non- corrosible before use by treating in a bath containing phosphoric acid or by coating with a black lacquer. With a black support, the image may be produced in a light-coloured substance, e.g. silver iodide. If a white or coloured lacquer is used, the image is produced in a black or coloured subtance. The lacquer may contain a phosphorescent or fluorescent substance for use in the method described in Specification 548,795. The temporary support may be opaque or coloured to render it absorbent of rays to which the emulsion is sensitive. Specifications 549,371, 553,341, and 555,383 also are referred to.
Patent GB-182515-A (GB)
Title: Improvements in bridges
IPC: A01M29/30
Filed: 1921-03-07
Abstract: 182,515. Swifte, G. B. M. March 7, 1921. Bridges and aqueducts.-An open grid consisting of transverse parallel bars A is inserted in the centre of a bridge to deter animals from crossing.
Patent GB-650116-A (GB)
Title: Process of oxidising fatty material and oxidation products obtained thereby
IPC: C11C3/00
Filed: 1948-03-09
Abstract: In the preparation of bleaching agents for oils, fats, waxes, dough and baked food products by the oxidation of fatty materials in the presence of oxidizing enzymes, for example, as described in Specifications 423,971 and 511,701, the process is carried out under super-atmospheric pressure preferably with gentle horizontal stirring, whereby a product of increased activity is produced in shorter time as compared with the open tank method.  In the normal case, a portion of the unoxidized oil rises to the top of the water extract of enzymic material, which has been extracted from the same raw material as the fatty oil, and so prevents aeration of the enzyme material by direct oxidation by the oxygen in the top of the autoclave and ensures that only two-phase contact occurs between the aqueous extract phase and the oil phase containing dissolved oxygen. In an example, peanut oil is heated under pressure with an enzyme extract, prepared by centrifuging peanut meal <PICT:0650116/III/1> in dilute aqueous calcium chloride and sodium bicarbonate, in an autoclave 1 containing a hollow cone stirrer 10 and provided with a heating or cooling jacket 24 and a pressure regulator 17 for admitting oxygen from a cylinder 16 to the space above the oil. At the completion of the treatment, the emulsion is discharged through a two-way pipe 32 by a centrifugal pump 33 to an emulsion-breaking tank.  A sampling tube 30 is provided.  The chamber 1 and stirrer 10 are finally washed with hot water introduced through a manhole 3. Specifications 549,703 and 549,731, [Group 1], also are referred to.
Patent GB-1294181-A (GB)
Title: Radial piston pump
IPC: F04B1/04
Filed: 1970-02-16
Abstract: 1294181 Reciprocating pumps DANFOSS A S 16 Feb 1970 [17 Feb 1969] 7366/70 Addition to 1289500 Heading F1A A radial piston pump comprises a plurality of pump units a, b, c each comprising a pair of cylinder blocks 16, 17 rotated by a common shaft 10, the cylinder blocks 16, 17 being biased into engagement with housing portions 1, 3, 5 and 7 formed with distributing ports 29-32 for communicating with cylinder ports 20, and the pistons engaging eccentric tracks 24. The pump units may be arranged in series or parallel with a common outlet, Fig.2 (not shown), or separate outlets. As shown, pump unit b is of larger capacity than units a and c, and its track 24 is of opposite eccentricity to those of units a and c, gearing being arranged between the eccentricityadjusting screws 28 of the tracks so that the track of unit b moves in the opposite sense to those of units a and c, Fig.3 (not shown). The units of a two-unit pump, Figs. 5 and 6 (not shown), have separate outlets and a common inlet. A leakage-collecting passage 50 inter-connects the pump units.
Patent GB-877806-A (GB)
Title: Improvements in or relating to devices for record players
IPC: G11B19/14
Filed: 1960-03-02
Abstract: 877,806. Snap-action switches. PHILIPS ELECTRICAL INDUSTRIES Ltd. March 2, 1960 [March 5, 1959], No. 7400/60. Class 38 (5). [Also in Group XXXVIII] In a record player an on/off switch is operated by vertical movement of the pick-up arm which produces vertical movement of a switch control member releasably held by the pick-up arm so that said arm can raise the control member when the arm is lifted from its rest position, the said arm having sufficient weight to force the control member into its lower position. In the embodiment described, the control member and releasable means comprise a rod 4 of permanent magnetic material and a ferromagnetic plate 19. In an automatic gramophone, the switch is initially closed by the manual operation of a button 15 which closes contacts 8 and 10 to start an automatic cycle which immediately causes pick-up arm 18 to lift. The magnetic attraction between plate 19 and rod 4 causes the latter to lift and move an over-centre spring switch lever 5 to the lower stable position shown in Fig. 1 so that the circuit is maintained until the automatic cycle is completed. When this is completed the pickup arm comes to rest again on the rod 4 and causes the switch lever 5 to take up its upper stable position and the circuit thereby broken. In a non-automatic gramophone, the switch is operated merely by the manual lifting and replacing of the pick-up arm.
Patent GB-538046-A (GB)
Title: Improvements in or relating to aircraft
IPC: B64D35/04
Filed: 1940-04-24
Abstract: 538,046. Driving airscrews. TAMPIER, R. April 24, 1940, No. 7415. [Class 4] An airscrew shaft is driven from an engine shaft through a plurality of intermediate shafts disposed in parallel relationship and connected by gearing. Fig. 12 shows an aeroplane in which four airscrews are driven from a single engine 1 the shaft 5 of which drives through bevel gearing groups of parallel shafts 12, 13, 14, arranged in one plane within the wing, and to which two of the propeller shafts are connected by bevel gearing. The shaft 5 also drives a shaft 6 through a group of four shafts 24 arranged about a common centre in the fuselage and geared to the shafts 5, 6 by spur gearing. The shaft 6 drives two propeller shafts arranged behind the elevators by gearing similar to that which drives the other two propellers. The gears are chosen to give a speed reduction from the engine shaft to the propeller shaft but the intermediate shafts rotate at higher speeds than their driving shafts. In a modification the shaft 6 is driven by a separate engine in the fuselage. A single pair of propellers on the main wing may be driven by shafts similar to the shafts 12, 13, 14. Fig. 7 shows a modification in which propellers on the wings are driven, each through two groups of shafts 24 in addition to the shafts 12, 13, 14. Worm gearing may replace the bevel gearing. Two engines arranged side by side in the fuselage may drive groups of shafts similar to the shafts 12, 13, 14 the two engine shafts being geared together through three intermediate shafts coaxial with the shafts 12, 13, 14. Fig. 11 shows a modification in which two engines drive, through groups of shafts E. F' arranged about two common centres, and through a change speed gear 35 two shafts,30, 31 geared to the propellers. A group of shafts similar to the, groups E, F may replace the change speed gear 35 and couple the shafts 30, 31 together. An engine at the front of the fuselage may drive a propeller at the rear through a group of shafts similar to the group 24 of Fig. 12. Fig. 13 shows an arrangement of gears enabling intermediate shafts arranged in one plane to be brought closer together.
Patent GB-977658-A (GB)
Title: Improvements in or relating to thermostatically actuated fluid flow control valves
IPC: G05D23/02
Filed: 1963-02-25
Abstract: 977,658. Valves. MECANO - BUNDY G.m.b.H. Feb. 25, 1963 [Feb. 28, 1962], No. 7472/63. Heading F2V. A thermostatically actuated valve comprises a valve release member 1a co-operating with a resilient seat 2c, and having an auxiliary flow path 1b which co-operates with a fixed valve member 4a. The thermostatic element is a piston-cylinder device and when the temperature commences the opening movement of the valve, the auxiliary path is first opened to allow a small flow and the flow past the closure 1a and seat 2c is prevented by the resilience of the seat. Further opening movement then moves the closure 1a from its seat. The resilient member may be fixed to the valve closure instead of the seat.
Patent GB-755258-A (GB)
Title: Improvements in and relating to the separation of germanium from primary materials
Inventor: MERRE MARCEL DE
IPC: D02G3/00
Filed: 1954-03-15
Abstract: In the process of recovering germanium values in the parent Specification (wherein the germanium containing material is briquetted with carbon and heated in a neutral or reducing atmosphere to 800-1000 DEG C.), the arsenic-containing condensate obtained from the volatile germanium compounds evolved, is roasted at about 500 DEG C. in an oxidising atmosphere for a time sufficient to convert geranium values to dioxide and thereafter heated to above the germanium sulphide volatilization temperature whereby arsenic is oxidized to As2O3 and volatilized leaving a germanium dioxide residue of diminished arsenic content.  This residue may be converted to and distilled as, germanium tetrachloride.  According to an example, a condensate obtained from the process of the parent Specification, containing 79 per cent As and 2 per cent Ge was heated as a thin layer in air for 3 hours at 500 DEG C. and then for 1 hour at 600 DEG C. in an electric furnace heated by radiation.  A residue containing 14 per cent Ge as GeO2 was obtained.
Patent GB-827733-A (GB)
Title: Improvements in or relating to automatic electric circuit breakers
IPC: H01H71/52
Filed: 1956-03-12
Abstract: 827,733. Automatic circuit - breakers. SQUARE D CO. March 12, 1956 [May 18, 1955], No. 7597/56. Class 38 (5). A circuit-breaker has its movable contact mounted on the bight portion of a U-shaped contact carrier, the limbs of which are supported in bearing recesses in a manual operating member, the bight being, in transverse section, also of U-shape. The limbs 42 of the contact carrier 41 are located in recesses 37 of the operating handle 35 which is pivoted at 38. A dead-centre tension-spring 43 holds the carrier 41 in its bearings and is connected to a cradle 31 pivoted at 32 and having an arm 34 engaging in an aperture 18 in an armature 17 of a tripping unit 6. The latter comprises a bimetal strip 11 secured to an adjustable connecting strap 4 and carrying a magnetic yoke member 12 to which the armature 17 is pivoted at 19. A compensating bimetal strip 23 is secured to the armature and has a turned-over end 25 in aperture 18 for engagement by the tip of arm 34 of cradle 31. On a maintained moderate overload the bimetal 11 deflects to the right and moves the armature 17 by means of compensating bimetal 23, thereby releasing the cradle 31 and opening contacts 45, 46. An insulating barrier 53 hooked to the carrier 41 confines the arc which is acted on by a U-shaped magnetic member 56 and the gases are vented through an opening 56a. The handle 35 is moved to a central position automatically and the mechanism is reset by moving the handle manually to the Fig. 2 position, so as to tilt cradle 31 counter-clockwise by engagement with a pin 64 thereon, and then moving the handle to the Fig. 1 position, thereby moving bearing 37 across the line of action of spring 43 to close the contacts. When arm 34 is tripped, a positive start is given to the carrier 41 by a projection 61 on the cradle. The circuit-breaker is mounted by clips 48, 50 which together with the other parts are located in recesses in an open-sided housing 1 and cover. The bimetal 11 is connected to the carrier 41 by a pigtail 14 which is welded to the carrier and secured by a flexible tab 49.
Patent GB-126770-A (GB)
Title: Improvements in the Construction of Reinforced Concrete Ships, Barges and other Vessels.
Inventor: WELLS EDMUND PERCY
IPC: B63B5/20
Filed: 1918-05-07
Abstract: 126,770. Wells, E. P. May 7, 1918. Concrete vessels.-In reinforced-concrete ships, barges, and other vessels, the metal skeleton is built up of a series of cross frames a made up of flat bars having a bulbous or laterally extended inner edge b and a notched or perforated outer edge to receive reinforcing rods d.. These rods are held in place by wire loops g which secure them to a second set of rods f. Keelsons are formed in connexion with the bottom frames a, and are provided with reinforcing rods l connected by wires n to rods m. The concrete filling on opposite sides of the frames are connected by short hooked rods p passing through holes o, through which the concrete also extends.
Patent GB-420565-A (GB)
Title: Improvements in or relating to optical reflecting devices
IPC: G02B5/04
Filed: 1934-03-10
Abstract: 420,565. Optical systems. LEITZ GES., E., Optical Works, Wetzlar, Germany. March 10, 1934, No. 7654. Convention date, April 1, 1933. [Class 97 (i)] In an optical reflecting device comprising a pentagonal prism with a roof-edge extension C, D, the extension is arranged with its generators at an angle to the plane of a principal section of the pentagonal prism, and the surface of emergence E is arranged at an angle to the generators of the prism. The angle between the surface E and the generators is equal to the angle between the generators of the roof-edge extension and the plane of a principal section of the pentagonal prism so that rays incident normally on the surface A will, after reflection at the surface B and the roof edge surfaces C, D, emerge normally from the surface E. The prism causes rotation of the image through a small angle in the image plane and avoids the use of a separate prism for this purpose in stereoscopic &c. instruments in which the two partial ray paths are at a small angle to one another. If it is desired to deflect the emergent rays through a further angle, one or more additional prisms, which may be formed integrally with the main prism, are used.
Patent GB-1241519-A (GB)
Title: Improvements in or relating to q switched lasers
IPC: H01S3/081
Filed: 1969-02-12
Abstract: 1,241,519. Lasers. INTERNATIONAL STANDARD ELECTRIC CORP. 12 Feb., 1969 [20 Feb., 1968], No. 7655/69. Heading HIC. [Also in Division G2] A Q-switched laser of the rotating prism type generates a single short pulse of output radiation by including the optical device shown in Fig. 2a or Fig. 3 in the resonator. The device of Fig. 2a comprises two glass parallelepiped plates 3, 4 which are optically wrung together at contacting surfaces 6 and serve to deflect the generated radiation out of and back into the optical axis 7, the radiation in passing through the device being repeatedly totally internally reflected. The total internal reflection incident angle A just exceeds the critical angle, so that reflection ceases to occur and the optical path is interrupted if the generated radiation becomes offaxis as is normal during Q-switching by using a rotating prism. In a modification, Fig. 3, the surfaces of the device in the optical axis are inclined at the Brewster angle and a prism 8 is used to complete the optical path through the device. In this arrangement the generated radiation must be polarized. Reference has been directed by the Comptroller to Specification 1,091,242.
Patent GB-1493386-A (GB)
Title: Guide rods for mining equipment
IPC: E21C29/14
Filed: 1975-01-24
Abstract: 1493386 Mining installations PITCRAFT Ltd 24 Jan 1975 [20 Feb 1974] 7664/74 Heading E1F [Also in Division B7]  A guide rod for guiding a mining machine along a face conveyor comprises a single steel length of U-shaped cross-section with the limbs 3 and base 4 integral, the limbs 3 having coaxial holes 5 disposed at regular intervals along the rod length. Each pair of holes accommodates a reciprocable pin 7 which has a scraper in the form of a coil 9, a sleeve (Fig. 5 not shown) or a block having an arcuate recess (Fig. 7 not shown). The guide rod may be formed by casting or rolling.