baber/WOPTO huggingface dataset:
Patent GB-458147-A (GB)
Title: Elimination of radiation in the case of superhet receivers
IPC: H04B15/06
Filed: 1936-03-09
Abstract: 458,147. Valve circuits for wireless reception. RADIOAKT.-GES. D. S. LOEWE, 10, Wiesenweg, Steglitz, Berlin. March 9, 1936, No. 7018. Convention date, March 12, 1935. [Class 40 (v)] In a superheterodyne receiver radiation of the local oscillation due to the coupling between the signal and local oscillation control grids is compensated by potentials of opposite phase. Fig. 1 shows a hexode frequency changer, particularly for short waves, in which the signal is applied to a grid 3 screened from the grid 7 to which local oscillation is applied. Local oscillating energy fed from grid 7 to grid 3 is compensated by energy of opposite phase fed through condenser 18. The capacity between grids 3, 7 may be reduced by the provision of two screening grids 6, 6<1>. The condenser 18 is preferably screened and the oscillator 8 and frequency changer may be separately screened, as shown in Fig. 2, with only the aerial passing to the exterior, apart from the supply leads which are provided with chokes and earthing condensers, and the self-capacities within the screen are rendered invariable. The phase reversed energy fed through the condenser 18 may be fed to the aerial or to a tuned input circuit and the energy may be obtained from an auxiliary inductive winding coupled to the tuned circuit of the local oscillation generator, Fig. 3 (not shown).
Patent GB-1532113-A (GB)
Title: Twin-chain conveyors
IPC: B65G19/24
Filed: 1977-02-18
Abstract: 1532113 Scraper conveyers HALBACH & BRAUN 18 Feb 1977 [29 April 1976] 07020/77 Heading B8A  The scrapers 6 of a twin-chain scraper conveyer are secured to the chains by shackles 5 which hold horizontal chain links 4 in respective pockets 8 formed in the underside of the scraper. The shackles have abutment faces 17 for engaging with respective noses 7 which support the scraper on trough floor 2. The scrapers may have protuberances 10 depending into the pockets and passing through the chain links.
Patent GB-1441340-A (GB)
Title: Method and apparatus for dissolving polymer gels
IPC: B01F5/02
Filed: 1974-02-15
Abstract: 1441340 Forming gel solution HERCULES Inc 15 Feb 1974 [4 April 1973] 7051/74 Heading B5A [Also in Division C3] For the formation of an aqueous acrylic polymer gel into a solution, the gel is extruded from each of a plurality of orifices 52, of a die plate 44, as a strand of interconnected segments which are broken into particles, by a liquid delivered under pressure against the extruding strands and the outlet face of the die. The liquid acts to prevent agglomeration of the particles prior to their dissolution in a solvent, and may comprise a non-solvent such as methanol, but preferably comprises water, DMF, or ethylene glycol solvent in which the particles are dissolved by agitation. The gel is of stated preferred viscosity, and preferably comprises 5 to 50% polymer, and 95 to 50% water, and the solution may be employed as flocculants and as mobiliy control agents in oil recovery processes, particularly secondary and tertiary oil recovery processes. The examples relate to a co-polymer comprising 70% acrylamide and 30% sodium acrylate, with the liquid and solvent comprising water. The extrusion may be effected by a piston, or as shown by a variable speed screw of a pitch which decreases towards the die. The interconnected segments of each extruding strand result from the re-adhesion, during passage through the orifices 52, of the severing of each gel stream entering the orifices by a radial blade, or blades, 42 which is mounted to rotate with the screw 26 and sweep across the upstream face of the die plate 44. The liquid may be delivered from a single nozzle, or as shown from four nozzles spaced cimcumferentially around the die plate 44. The gel is delivered to the extruder as cylindrical pieces upon a slotted belt conveyer. Preferred values are specified of the die orifice size, of the total orifice area to that of the die plate, of the pressure at which the liquid is delivered, and of the particle size. The particles broken from the die are delivered into a tank (54), Fig. 1 (not shown), to which further solvent may be delivered to effect the solvation. A screw type pump delivers a slurry of particles in the solvent from the tank (54), through a series of tanks in which solvation is associated by low-shear and side entering stirrers. The solution may be filtered and may have additives added thereto.
Patent GB-1461854-A (GB)
Title: Device for rotating a workpiece
IPC: B21B39/22
Filed: 1974-02-15
Abstract: 1461854 Grinding CENTRO-MASKIN I GOTEBORG AB 15 Feb 1974 [15 Feb 1973] 7063/74 Heading B3D [Also in Division B8] A workpiece 20, while clamped between a shoulder 19 and the surface 18 of an arm 15, is subjected to grinding by a grinding disc 23 which rotates in the direction of the arrow. After grinding, a burr (24) is formed at the top left corner of the workpiece 20, Fig. 4 (not shown), and by moving the workpiece 20 to the left in Fig. 1 on to a plate 1 by means of an arm 12 and rotating the plates 1, 2 and thus the workpiece by one quarter of a turn the burr is then at the top right corner of the workpiece and will be removed during the machining of the now upper surface of the workpiece.
Patent GB-1166492-A (GB)
Title: Key Operated Switches
Inventor: CRYER EDWARD
IPC: H01H27/06
Filed: 1966-02-17
Abstract: 1,166,492. Mechanical switches. JOSEPH LUCAS (INDUSTRIES) Ltd. 26 Jan., 1967 [17 Feb., 1966], No. 7075/66. Heading H1N. The rotary switch of Specification 1,164,433, has an additional pair of fixed contacts 53, 54 in a secondary housing 51 and adapted to be bridged by a roller 57 in one position of the rotary switch. Roller 57 is guided for vertical movement in slots 22 in the rotor 16 and is urged downwardly by a spring 58 against an annular cam surface (59, 59a).
Patent GB-372017-A (GB)
Title: Improvements in or relating to printing machines
IPC: B41F13/14
Filed: 1931-03-06
Abstract: 372,017. Printing-machines. HOE & CO., Ltd., R., 109, Borough Road, London. -(Hoe & Co., Inc., R.; 138th Street, New York, U.S.A.) March 6, 1931, No. 7078. [Classes 100 (i) and 100 (ii).] Rotary offset machines ; impression adjustments; sheetregistering devices; gripper mechanism.-To facilitate the adjustments of cams, gears, or other operative elements of machines for printing on sheets, a timing plate 41 is screwed by screws 42 to a cam disc 32 which is mounted so as to move in a definite cycle corresponding to the cycle of operations of the machines. The timing plate 41 co-operates with a fixed pointer 44, and it is graduated so as to indicate definite positions in the operation of the machine, e.g. the position of the machine parts when the grippers close on the sheet, and when the feed occurs, and when the cylinder is tripped, &c. The cam disc 32 is fitted with a cam groove 33 for operating a roller 34 on a lever 35 connected to the sheet-feed mechanism, and the disc 32 is mounted on a shaft 18 which is fitted with a gear 17 which transmits motion from a shaft 13 to a gear 19 on the impression cylinder 21 of an offset machine for printing on tin plates 31. To the shaft 18 is also secured by a set-screw an open cam which controls either the registration of the sheet, or the tripping of the impression cylinder. The grippers 25 are actuated by an adjustable cam 27. The plate 41 may make one revolution for two or more complete cycles of the machine, and in modified forms a pointer may replace the graduated plate and it moves over a fixed disc graduated in a manner similar to the plate 41.
Patent GB-181106-A (GB)
Title: Improvements in instruments for measuring rotary and linear speeds
IPC: G01P3/18
Filed: 1921-03-05
Abstract: 181,106. Sch³rmann, W. March 5, 1921. Dials and scales.-An instrument for measuring rotary speeds by the aid of a centre-point or linear speeds by the aid of a measuring roller has two measuring rollers the diameters of which are in the ratio 10 : 6, either of which may be coupled with the driving-shaft, to give an indication as speed per second or per minute, various ranges of speed being obtained by means of change-speed gearing. The dial 44 bears two scales each of which is used in conjunction with two positions of the change-speed gearing controlled by the knob 47 to give four ranges of speed as revolutions per minute for the centre-point and metres per minute and millimetres per second for the two measuring-rollers 45, 46.
Patent GB-511981-A (GB)
Title: Improvements relating to window opening and closing mechanisms
IPC: B60J1/04
Filed: 1938-03-08
Abstract: 511,981. Stays for windows. COX, R. W. March 8, 1938, No. 7200. Addition to 419,448. [Class 65 (i)] A unilaterally flexible stay consisting of a chain &c. a enclosed in a curved guide d is guided at its free end in an extension h of the guide d. The stay may be operated to open or close the window by a worm c engaging teeth b on the chain.
Patent GB-684603-A (GB)
Title: Improvements relating to looms for weaving tufted pile fabrics
IPC: D03D39/02
Filed: 1949-03-17
Abstract: 684,603. Stop-motions for Axminster looms. PLATT BROS. & CO.,.Ltd., BASSINDALE, I. B., and SCHOFIELD, F. B. March 17,1950 [March 17, 1949], No. 7255/49. Classes 142(i) and 142(ii) To prevent breakage if the clasping means of a transfer arm strikes a displaced tube frame, the transfer arms are made in two parts 10, 11 hinged at 12 and locked together by a shear pin 13. When the pin shears, an insulated plate 16 carried by the part 11 makes contact with the part 10 to close the stop motion circuit described in Specification 684,558.
Patent GB-817348-A (GB)
Title: Improvements in or relating to cushioning mechanism for railway vehicles
IPC: B61G9/10
Filed: 1957-03-05
Abstract: 817,348. Combined buffer and drawgear. NATIONAL MALLEABLE & STEEL CASTINGS CO. March 5, 1957 [March 5, 1956], No. 7307/57. Class 103(5) A combined buffer and drawgear has a spring unit and friction gear arranged in a casing 30, provided with forwardly projecting arms 42a, 44a which engage the front stop lugs 16 to limit the travel in draft since the rear wall 47 of the casing 30 acts as the rear follower. In buff the front follower 32 can travel rearwardly until its rear face contacts the forward face 70 of the friction gear housing 50. The rear wall 47 of the casing 30 is offset forwardly at 48 (Fig. 1) and the front face 63 of the front follower 32 is also offset forwardly to provide a greater clearance between the coupler head and the striking casting 25.
Patent GB-747800-A (GB)
Title: Seat-adjustment mechanism
IPC: B60N2/235
Filed: 1954-03-15
Abstract: 747,800. Adjustable seats. HAPPICH GES., GEB. March 15, 1954 [March 16, 1953 ; May 19, 1953 ; Dec. 10, 1953], No. 7395/54. Class 52(3). [Also in Group XXV] In a hinge for a seat back comprising a part 1 secured to the seat bottom, a part 2 secured to the seat back and a spring 11 for continuously urging the seat back towards the upright position, a toothed member 3 is attached to the part 1 and a spring-loaded pawl 4, which is pivoted at 5 to the part 2, locks the parts in adjusted position. As shown in Fig. 1, a handle 7 is pivoted at 6 to the part 2 and has a nose 8 which engages an arcuate surface 4<SP>1</SP> on the pawl to hold it in engagement with the toothed member. When the handle is lifted, nose 8 comes opposite a recess 4<SP>11</SP> in the pawl which is moved out of engagement with the toothed member by a spring 9 to allow adjustment. The square shaft 10 is mounted in star-shaped holes in the part 2 so that the initial position of part 2 can be varied by re-orientating the square in the stars. The handle may be spring-loaded so that it is biased into both the free and locking positions. In a modified form, Fig. 3, the toothed member 3 is formed as a ratchet, the pawl 4 being urged by spring 9 into engagement and being held in engagement by the nose 8. When the handle 7 is half raised, the seat back can be moved backwards against the spring 11 but not forwards because of the ratchet mechanism. When the handle is fully raised, a second nose 8<SP>1</SP> lifts the pawl out of engagement with the ratchet to allow forward movement of the seat back.
Patent GB-811084-A (GB)
Title: Improvements in and relating to headwear
IPC: A42B1/06
Filed: 1957-03-06
Abstract: 811,084. Head-scarf. SMITH, F. B. H. March 6, 1957. No. 7403/57. Drawings to Specification. Class 63. A triangular head-scarf made of flexible plastic sheet has a semi-circular peak of bendable plastic material secured along its straight edge to the front edge of the scarf, which is located at the front of the forehead in wear; the peak extending forward and downward of the face of the wearer. The edges of the scarf and peak, including the attrached edges, are protected and strengthened by a double hem or a binding secured by sewing or by heat-sealing. The triangular scarf may be formed by folding a square sheet of the material along a diagonal
Patent GB-322704-A (GB)
Title: Knife for mincing machine
IPC: B02C18/36
Filed: 1929-03-08
Abstract: 322,704. Jahn, A. March 8, 1929. Mincing.-A knife for a mincing-machine consists of a hub a, radiating curved arms band cutting-members c which are engaged at the inner ends in recesses e in the hub, and are clamped against the arms b by screws f at the cuter ends. As shown in Fig. 1, the arm b is convex and the normal radius of curvature of the cutters c is greater than that of the arms b, so that the screws f maintain the cutters under stress. The inner ends of the cutters are recessed to engage the recesses e, and the cutters are of channel section. In a modification, the cutters are stressed into concave form against concaved arms b.
Patent GB-115708-A (GB)
Title: Improvements in or relating to Telegraph Relays.
IPC: H01H53/015
Filed: 1917-05-26
Abstract: 115,708. Marks, E. C. R., (United Tclegraph & Cable Co.). May 26, 1917. Moving - coil relays. - The moving contactarm is given a vibratory movement in a plane at right-angles to the plane in which it is oscillated by the receiving-coil, the vibratory movement causing the arm to engage fixed contacts in the form of mercury globules on each side of the neutral position. The globules are placed on horizontal or inclined conducting-surfaces separated by a mica strip. In the arrangement shown in Figs. 2 and 3, the receiving-coil b is harnessed to a bridle b<2> carrying the moving contact-arm b<1>, which is given a vibratory movement in a plane at right-angles to the plane in which it is moved by the coil b, by means of a magnet c and its weighted armature c<1>. The arm b<1>, which is adapted to engage either of the mercury contacts c', c<2>, Fig. 4, is supported by a, thread b<7>, the tension of which is regulated by a spring b<8> and a screw, and normally vibrates above a mica strip c<3> Separating two silver blocks c<4>, c<5> on which the contacts c<1>, c<2> are placed; but when moved from its normal position by the coil b, the vibratory movement causes the arm to engage either of the contacts c<1> or c<2>. In the modification shown in Fig. 5, the contacts c<1>, c<2> are placed on inclined surfaces providing a thick layer of the mercury near the neutral position of the arm.
Patent GB-756205-A (GB)
Title: Production of alkali metal hydroxides
Inventor: PAOLONI CARLO
Filed: 1954-03-16
Abstract: <PICT:0756205/III/1> <PICT:0756205/III/2> Substantially all the alkali metal hydroxide content of an alkali metal amalgam obtained from a mercury cathode electrolytic cell is recovered by causing the amalgam to flow vertically through a first decomposition zone to which water is fed concurrently with the amalgam so as to partly decompose the amalgam and produce an alkali metal hydroxide solution of a concentration of at least 68 per cent and optionally 73-78 per cent, recovering the hydroxide solution and passing the partly decomposed amalgam from the said decomposition zone through a heat-exchanger, in heat-exchange relationship with undecomposed amalgam flowing towards the said zone, to a second decomposition zone wherein the amalgam is caused to flow horizontally in counter-current with fresh water so as to substantially completely decompose the amalgam and produce an alkali metal hydroxide solution of low concentration, e.g. 35-40 per cent, recovering the hydroxide solution and returning the decomposed amalgam to the electrolytic cell.  As shown, amalgam to be denuded enters a vertical decomposer (Fig. 1) through inlet 1 and passes through heat-exchanger L and pipe F to distributer 3 from where it is directed on to graphite catalyst bodies contained in a series annular baskets A (see also Fig. 2, not shown) together with decomposing water which has been admitted at inlet S and passed through direct heat-exchanger M.  Hydrogen and water vapour generated by the reaction passes through heat-exchanger M wherein the watervapour is condensed, and hydrogen passes out at 6. Concentrated alkali metal hydroxide is removed at 7 while partially denuded amalgam is passed through heat-exchanger L and outlet 4 to a horizontal decomposer (Fig. 3) through an inlet 8 wherein it passes over graphite catalyst strips Q (see also Fig. 3a, not shown) to outlet 9 in countercurrent to fresh water which passes from inlet 10 to outlet 11.  Hydrogen produced in the vertical decomposer is passed into the horizontal decomposer at 12, and removed, together with hydrogen produced in the horizontal decomposer, at 13.  The electrolytic cell may be arranged above the vertical decomposer (Fig. 4, not shown) or below the horizontal decomposer (Fig. 5, not shown).
Patent GB-813057-A (GB)
Title: Plate type valve
IPC: F16K11/074
Filed: 1956-03-12
Abstract: 813,057. Valves. BENDIX AVIATION CORPORATION. March 12, 1956 [April 4, 1955], No. 7675/56. Class 135. In a plate valve comprising a pair of members having contacting faces and means for sliding one of the members relative to the other to bring a fluid passage in the one member into and out of register with a fluid passage in the other member, the passage in one member is formed with concentric counterbores slidably mounting inner and outer sleeves urged into engagement with the contacting face of the other member whilst the passage in the other member is of shape and size so that it is contained within the inner sleeve in one relative position of the members and between the sleeves in another relative position of the members. As shown, a valve plate 20, Fig. 1, mounted for rotation on a shaft 21 and sandwiched between body and cover parts 17, 18 is formed with shaped ports 25, 26, Fig. 3, interconnected by a passage 27 and shaped ports 28, 29 interconnected by a passage 27a. Passage, 11-14 in the body part 17 terminate in a face 15 adjacent a face 20a of the valve plate 20 and communicate with pressure, exhaust and two motor ports respectively. All the passages except the exhaust passage 12 are formed with inner and outer counterbores 31, 36 slidably and sealingly mounting sleeves 30, 35 urged by springs 33, 38 to engage the face 20a. The front faces of the sleeves are bevelled to reduce their surfaces in contact with the plate 20 to reduce frictional forces. In one position of the plate 20, Fig. 3, the pressure port 11 is connected to one motor port 14 and the other motor port 13 to the exhaust port 12. On rotating the plate 20 so that the connection to the motor ports are reversed, the ports 25, 26, 28, 29 at the midway stage are entirely confined between the inner and outer sleeves so that the interflow between the various body passages is prevented. To provide hydraulic balance the ports 25, 26, 28, 29 are extended through the plate 20 and counterbores and sleeves in the cover part 18 opposite to and identical with the counterbores and sleeves in the body part 17 are provided.
Patent GB-889966-A (GB)
Title: Improvements in, or relating to, cycle and like saddles
Inventor: HOLLAND CLEMENT ARTHUR
IPC: B62J1/08
Filed: 1957-03-08
Abstract: 889,966. Cycle saddles. WRIGHT SADDLE CO. Ltd. March 10, 1958 [March 8, 1957], No. 7713/57. Class 136(3). In a cycle saddle each of two wires 2 incorporated in a seat supporting frame is formed, between the nose and cantle ends of the saddle, into a loop 3, the two loops being parallel to one another, spaced apart and disposed in planes perpendicular to the top of the saddle seat. The plates 7, 8 of a twoplate clamp span the loop 3 and the threaded shank 6b of an eye bolt 6 passing through the plates, is engaged by a nut 9 on the opposite side of the plates to the bolt eye 6a. When the clamp has been assembled on the wires the eye 6a is passed on to the upper end of a saddle pillar. The saddle may be secured in any desired angular relationship to the pillar. As shown in Figs. 1 and 2, the saddle is mounted on a straight pillar. Alternatively, as shown in Fig. 3, the saddle may be mounted on the head 5 of an angleshaped pillar.
Patent GB-586479-A (GB)
Title: Improvements in air conditioning apparatus
IPC: F24F1/02
Filed: 1944-04-26
Abstract: 586,479. Air conditioning. FRIGIDAIRE, Ltd., BROAD, J. W., PERRIN, L., and WILLIAMS, C. E. April 26, 1944, Nos. 7749 and 20895. [Class 137] [Also in Group XIII] Air conditioning apparatus for installation in a larder &c. comprises a casing having an upper shell 1 containing the inclined evaporator 11 of a refrigerating machine (see Group XIII) contained in a lower shell 2, the air of the larder drawn in by a fan 13 through an annular inlet 3 passing over the evaporator and issuing to the larder through an inclined square grille 4 with inclined louvres. By orienting the grille the air can be directed in any one of four directions. Moisture condensing on the evaporator falls on to an inclined tray 20 and drains by a pipe 21 into a receptacle 22 from which it falls on to gauze or other absorbent material at the throat of a venturi tube 24 in the path of an air stream cooling the condenser, so that the moisture is evaporated and discharged to the outside of the larder as described in Specification 586,508. Alternatively the moisture can be dissipated into the larder air to maintain a constant humidity.
Patent GB-1371858-A (GB)
Title: Producing film by continuous extrusion
IPC: B29C48/10
Filed: 1972-02-22
Abstract: 1371858 Extruding tubular films BARMAG BARMER MASCHINENFABRIK AG 22 Feb 1972 [22 Feb 1971] 8077/72 Heading B5B Tubular films are extruded and then adjusted to the required circumference by means of a pressure differential between the inside and outside of the tube. This pressure differential is generated by a constantly flowing cooling medium, preferably air, which flows both on the inside and the outside to either increase the pressure inside the film to above the atmospheric outside it, or decreases the pressure outside the film to below the atmospheric inside it or acts both inside and outside to give an excess pressure inside. The tube remains open to the atmosphere throughout the process. After cooling the tube is cut into a sheet or sheets which are then drawn off. In the illustrated embodiment a film 6 is extruded through annular die 2 into an area formed by housing 3 and mandrel 7. Cooling air is supplied through nozzle 5 and flows outside the tube into the atmosphere through aperture 7<SP>1</SP>, so generating a reduced pressure. This assists in inflating the film to size 6<SP>1</SP> and drags atmospheric air through apertures 19 to form an additional coolant.  Air is introduced into the film through tube 10 and nozzle 9, so increasing the pressure inside the film. This air also escapes through aperture 7<SP>1</SP> and also cools the film. The film is given an oval cross-section by member 7 and expander 11 at 6<SP>11</SP> and becomes almost flat in the zone immediately preceding the cutting blades 12. Reference has been directed by the Comptroller to Specification 1,006,573.