baber/WOPTO huggingface dataset:
Patent GB-1469619-A (GB)
Title: Furniture construction
IPC: A47C5/00
Filed: 1975-08-14
Abstract: 1469619 Furniture frames J R HOLT 14 Aug 1975 33953/75 Addition to 1204245 Heading A4H The chair of Specification 1204245 that includes a base assembly comprising triangular panels providing a generally pyramidal form supporting an upper seat assembly has the upper and base assemblies formed by folding from a single flat blank of sheet material that is symmetrical about its centre line. Four triangular panels 40, 40a, 41, 41a form the base assembly and are each connected along two edges to the seat assembly.
Patent GB-521893-A (GB)
Title: Improvements in and connected with sealing means for enclosed apparatus, such as electrical apparatus
IPC: G01R11/04
Filed: 1938-11-23
Abstract: 521,893. Seals. CRABTREE & CO., Ltd., J. A., McLOUGHLIN, H. F., and HILL, W. E. Nov. 23, 1938, No. 34039. [Class 146 (ii)] The cover c of a box enclosing apparatus, such as electrical apparatus, is adapted for the introduction and guidance of a sealing wire to a transverse hole m in the. screw head. The head i is flush with the cover and has a slot l parallel or at right angles to the hole m which is slightly above the curved parts m' of the recesses n formed in the cover diametrically of the bolt head. The opening j in the cover may be of circular or diamond shape with the head i in the centre. Specification 521,936, [Group XXXVII], is referred to.
Patent GB-1400854-A (GB)
Title: Manufacture of synthetic aggregates
IPC: C04B18/02
Filed: 1972-07-25
Abstract: 1400854 Aggregates from ash SHERWEN ENG CO Ltd 9 Oct 1973 [25 July 1972] 34751/72 Heading C1K An aggregate comprises a sintered mixture of incinerator ash (defined) and clay. The mixture can be screened. Metal can be removed from either the ash or the mixture before sintering and recovered.
Patent GB-1081898-A (GB)
Title: Improved rotary pump
IPC: F04C19/00
Filed: 1964-08-25
Abstract: 1,081,898. Rotary pumps; liquid-ring pumps. J. L. LEWIS, R. B. BROWNE and J. M. BROWNE. Aug. 25, 1964 [Aug. 29, 1963], No.34779/64. Headings F1C and F1F. A rotary vacuum-pump of the liquid-ring type comprises a flanged rotor 23 carried by a fixed hub 13 eccentrically with respect to a casing 28 that is rotatably supported by bearings 33 on a shaft 11, which is attached to the said hub by a key 14, the rotor being provided with a plurality of radial vanes (24), Figs. 2 and 4 (not shown), that are integral therewith and engage with grooves (39) in the inner peripheral-surface of the casing. The casing is driven by a belt engaging with a pulley 35 on an end wall or plate 31. Spaces between the vanes are partly filled with a liquid e. g. oil or water, which in operation forms a layer 41 due to centrifugal action so as to provide an abutment and effect sealing of the rotor relative to the casing. Ports 27 between the vanes periodically and sequentially come into register with a suction port 18 and a discharge port 22 in the hub 13 when the rotor rotates with the casing, the said ports being connected to corresponding pipes 16, 19 at either end of the shaft. In modifications of the pump (not shown in the drawings) flexible membranes may extend between the vanes to prevent gases being dissolved in the layer 41 of liquid. The ports 27 may be replaced by ports in the end walls or plates 30, 31 of the casing and the flanges on the rotor, connection between the ports being effected by holes in plates fixed to the shaft and lodged between the rotor and the casing. Alternatively, the ports are provided in the peripheral wall of the casing 28 and communicate with an outer casing. The ports may contain non-return valves. The casing 28 may be replaced by a further rotor that is generally similar to the rotor 23, the outermost rotor being enclosed by a casing that is similar to the casing 28. Several coaxial rotors may be disposed in this manner and be arranged to effect pumping in parallel or in series. A plurality of rotors may be disposed in tandem on a common hub and operate in series with one another. The shaft 11 may be arranged to rotate in the opposite direction to the rotor and the casing.
Patent GB-1322154-A (GB)
Title: Conveying magazine
IPC: B65G1/06
Filed: 1971-07-23
Abstract: 1322154 Endless conveyers G STUMPF 23 July 1971 [21 Aug 1970] 34807/71 Heading B8A A storage magazine comprises a series of endless conveyers 1, 2, 3, each formed of a series of side-by-side spaced belts, and arranged one above the other and a feed and a discharge conveyer 8, 9, also formed of a series of side-byside spaced belts, mounted at opposite ends of the conveyers 1, 2, 3 to be pivoted into alignment with a desired one of the conveyers 1, 2, 3. The conveyers 8, 9 are each mounted on one arm of respective bell crank levers 14, 15 each coupled by a chain or cable 18, 18<SP>1</SP> to a drum 19 which is rotatable by way of a handle 20 to raise or lower the conveyers 8, 9 into alignment with the appropriate conveyer 1, 2, 3. The adjacent end rollers 16, 17, 33 of the conveyers 1, 2, 3, 8, 9 are stepped to have a lesser diameter between the belts and are each provided with an L-section plate (34), (37), Fig. 3 (not shown), one limb of which is castellated to fit against the belts and the reduced diameter portion of the end rollers to bridge the gap between adjacent end rollers.
Patent GB-640058-A (GB)
Title: Improvements in and relating to printing machines operating on the endless band principle
IPC: B41F17/00
Filed: 1947-12-31
Abstract: 640,058. Printing-machines. SEMPERIT GUMMIWERKE AKT.-GES. Dec. 31. 1947, No. 34999. Convention date, March 26, 1941. [Class 100 (ii)] A printing machine has an endless band or chain forme carrier, and an impression cylinder co-operating with a straight stretch of the forme carrier. As shown, the impression cylinder 9, and two endless band inkers 6, 7 act on one of the vertical straight runs the band 1 where the flexible elastic formes 4 are flat; a cylinder 8 driven from one of the guide rollers 3 cooperates with the impression cylinder 9. 13 and 14 are printing couples, e.g. for further colours, and 21 is a cutting mechanism. In a modification two bands 1 are arranged one on each side of the cylinder 9, the inkers in this case being on the vertical straight runs remote therefrom.
Patent GB-1353658-A (GB)
Title: Carbon dioxide lasers
IPC: H01S3/036
Filed: 1971-07-27
Abstract: 1353658 Lasers SIEMENS AG 27 July 1971 [4 Aug 1970] 35154/71 Heading H1C In a CO 2  laser in which equilibrium is maintained by a catalyst which oxidizes disassociated CO, the catalyst comprises nickel oxide heated to a temperature during laser operation of at least 400 C. The catalyst comprises an oxide layer on a nickel body, and may comprise one of the discharge electrodes, preferably the cathode, or consist of a separate, electricallyheated body. Alternatively the nickel oxide may consist of a surface layer of a nickel mesh located adjacent to a discharge electrode, e.g. in the form of an electrode-encircling cylinder. The gas discharge tube may include a pressure equalizing by-pass.
Patent GB-325850-A (GB)
Title: Improvements in or relating to the construction of motor boats
IPC: B63H21/30
Filed: 1928-11-30
Abstract: 325,850. Paine, H. Scott-. Nov. 30, 1923. Motor boats with unit construction of interior hull fittings.-The interior contents of the hulls of motor boats comprising the engine 4, tanks 8, steering wheel 7, bulkheads 5, and furnishings 6 are assembled on longitudinal members 3 as a unit and are inserted and secured as such in the hull. Specification 181,959, [Class 113 (ii), Ships &c., Kinds &c. of], is referred to.
Patent GB-1293972-A (GB)
Title: Analog-to-digital converter
Inventor: DRANGEID KARSTEN E
IPC: H03M1/00
Filed: 1970-07-22
Abstract: 1293972 Analogue to digital converters INTERNATIONAL BUSINESS MACHINES CORP 22 July 1970 [5 Aug 1969] 35470/70 Heading G4H In an analogue to digital converter, the analogue current is subtracted from the sum of a number of reference currents, supplied by current generators C 1 -C 4 , to form a difference current which is compared with each reference current in turn. If the difference current is greater than the particular reference with which it is being compared, the sum of reference currents is reduced by the value of the particular reference current. Reference current generators supply currents to summing junction Z via thyristors S 1 -S 4 . The current flowing through diode 41 to ground is the difference between the analogue current and the sum of the reference currents. Initially, a reset pulse is fed to thyristors S 1  to S 4  on line 23 to render them conducting. The pulse appears at T 1  reducing its voltage to just below zero. This pulse causes the current generated by C 1  to fall. If the current supplied by C 1  is initially less than i D , then the current generated by C 1  will be able to fall to substantially zero switching S 1  off. If, on the other hand, the current supplied by C 1  is initially greater than i D , i D  will become zero and diode 41, non-conducting before the current supplied by C 1  can reach zero. This prevents S 1  switching off, and allows the pulse applied at T 1  to appear at 23. The process is repeated for each terminal T 1 -T 4  in turn. Thus, a series digital output signal representative of the analogue input is obtained at 23. Also the state of thyristors S 1 -S 4  may be read out in parallel to give a representation of the analogue input. The thyristors S 1  to S 4  may be replaced by diodes or other suitable switching devices. The constant current generators employ F.E.T.'s with negative feedback, the current value being determined by the values of resistors 15. The current generator weights may be 4-2-2-1 or 8-4-2-1. A digital to analogue converter, Fig. 2, using the same basic components has parallel inputs 23<SP>1</SP> to thyrsistor gates S 1 -S 4 . The digital input signal switches on appropriate gates S 1 -S 4  permitting the corresponding currents to flow through resistance R and thus generate an analogue output at 43.
Patent GB-857737-A (GB)
Title: Improvements relating to balls or cops of twine
Inventor: NISBET ALEXANDER
IPC: B65H55/04
Filed: 1958-11-05
Abstract: 857,737. Yarn cops. WRIGHT'S ROPES Ltd. Oct. 14, 1959 [Nov. 5, 1958], No. 35477/58. Class 120(3). [Also in Group XVII] A cylindrical cop of twine 2 has an outer wrapping 4 formed by a flexible sheet of material e.g. paper or cardboard, which may be damped or soaked, wrapped around the cop so that the ends just overlap, as at 6; the wrapper 4 has continuous circumferentially-extending grooves 5 lying against the outermost layer 2<SP>1</SP> of the cop providing a support therefor.
Patent GB-831280-A (GB)
Title: An improved process and apparatus for producing a combustible gas from volatile liquid fuels, particularly gasoline
IPC: C10J1/12
Filed: 1956-11-21
Abstract: 831,280. Gas manufacture. CORREA, E. Nov. 21, 1956, No. 35551/56. Class 55 (2). Air is carburetted with a liquid hydrocarbon and is supplied directly to combustion apparatus by means of a compressor which during the suction stroke, draws in a mixture of air and the liquid fuel, the latter being vaporized by the heat of compression during the compression stroke, the mixture being vented towards the end of the compression stroke, through a water seal, to the place of use. As shown, the liquid fuel is drawn by suction from a valved pipe 9 into a chamber 10 where it is atomized and mixed with the air drawn in by the suction and with supplementary air regulated by a valve 25. The valve 12 is opened towards the end of the compression stroke either mechanically or by the yielding of a loading-spring, and the mixture passes through the pipe 16, past a spring loaded valve 17, through the water seal to the burner 20. Variations in the rate of use of the gaseous mixture result in variations in the pressure above the level of the water in the seal, which produces through the pipe 23, corresponding variations in the water level in the float chamber 21. The float 22 thus regulates the speed of the motor 1 and the compressor according to the demand for gas.
Patent GB-467833-A (GB)
Title: Improvements in or relating to thermionic amplifiers
IPC: H03F1/36
Filed: 1935-12-23
Abstract: 467,833. Valve amplifying circuits. STANDARD TELEPHONES & CABLES, Ltd., and SANDEMAN, E. K. Dec. 23, 1935, No. 35588. [Class 40 (v)] In a valve amplifier employing negative feed-back for the reduction of distortion, a fraction of the output voltage is balanced against a fraction of the input voltage so far as the fundamental frequencies are concerned, and the difference, containing substantially noise and harmonics only, is fed back in negative phase. As shown in Fig. 1, input is applied through a transformer T1 to a push-pull pair of valves V1, V2 which are connected through push-pull couplings and valves to the output valves V3, V4. The transformer T1 has two secondary coils, each of which is connected across a diagonal of a resistance bridge, one arm B or H of each bridge being connected in the grid-cathode circuit of the corresponding valve V or V2. A fraction of the input voltage is tapped off symmetrically from the arms B, D of one of the bridges and is applied through a phase-adjusting network PN and amplitudeadjusting resistances L, M, N, O to resistances X, Y centre-tapped to earth. A fraction of the output voltage of the valves V3, V4 is fed back from points on resistance bridges which are conjugate with respect to the output transformer T2. These voltages are fed through condensers C3, C4 and resistances P, Q to the ends of the resistances XY, and adjustments are made until the voltages arriving from left and right respectively neutralize each other so far as possible over the signal range. Noise and harmonics give a resultant voltage across XY which is applied through a transformer T3 to a feed-back push-pull amplifier FA. The respective output anodes of the amplifier FA are connected through condensers C9, C10 to the respective junctions A, C and E, G of the input bridges, the opposite junctions of the bridges being earthed. In this way, the feed-back voltage is applied at points which are conjugate with respect to the input transformer T1 and with respect to the resistance JK ; but the feedback voltages are applied to the grid circuits of the amplifiers VI, V2. In a modification shown in Fig. 2, the divided secondary coil of the input transformer T1 is connected through resistances R20, R21 to the respective grids of the valves V1, V2 ; and a resistance shunt R24, R25 includes the resistances J, K which are connected to the phasing network PN as in Fig. 1. The voltage from the feed-back amplifier is applied to the respective grids through resistances R22, R23. The feed-back voltage can.be prevented from reaching the network PN and the resistances XY by providing resistances between the ends of the resistances J, K and the points 21, 20 as indicated in dotted lines.
Patent GB-1044829-A (GB)
Title: Method of forming a composite aluminum and steel strip
IPC: F16C33/14
Filed: 1964-08-31
Abstract: Aluminium base alloys for use as the bearing layer of a bearing made from a bi-metallic strip comprise (a) 3% cadmium, 1% copper, 1% nickel, remainder aluminium, (b) 4% silicon, 1% cadmium. remainder aluminium, (c) 5%-7% tin, 1% copper, 1.5% silicon, 0.5% nickel, remainder aluminium, (d) 15%-30% tin (usually 17.5% to 22.5%) 1% copper, 0.3% impurities, remainder aluminium.  Cobalt plating.  Steel strip is plated with cobalt electrolytically in a bath comprising 504 grams/litre of cobalt sulphat, 17 grams/litre of sodium chloride and 45 grams/litre of boric acid.  The solution has a pH of about 5.2 and may be used at 75 DEG F.  A period of about 85 seconds at a current density of 40 amps/ft2 deposits 0.00005 inches of cobalt. Cobalt-phosphorus is plated on the steel strip in a solution containing 30 grams/litre cobalt chloride, 10 grams/litre sodium hypophosphite, 50 grams/litre ammonium chloride and 100 grams/litre sodium citrate.  The solution has a pH of between about 8 to 9 and at a temperature of 195 DEG F about 5 minutes immersion is required for a deposit of 0.00005 inches.
Patent GB-1386464-A (GB)
Title: Hand pump
IPC: F04B43/08
Filed: 1972-05-31
Abstract: 1386464 Reciprocating pumps W LEEDS and L A MICALLEF [trading as LEEDS & MICALLEF] 31 May 1972 [7 June 1971] 35643/74 Divided out of 1386461 Heading F1A The subject-matter is the same as that of the parent Specification 1386461, but the claims relate to the outlet valve arrangement of the pump.
Patent GB-413572-A (GB)
Title: Improvements in or relating to screens for the reception of optically projected images
IPC: G03B21/56
Filed: 1933-12-19
Abstract: 413,572. Projection screens. ANDERSEN, A. C., 50, Set. Knudsvej, Copenhagen. Dec. 19, 1933, No. 35663. Drawings to Specification. [Class 97 (i).] The surface of a projection screen is divided into differently coloured elements of uniform size, shape, and arrangement, the elements being so small as not to be individually distinguishable from the normal position of a spectator. The colours may be printed on a white paper base, or the screen may be woven with coloured threads. The elements may be alternately arranged red and green squares, red, blue, and yellow hexagons, or other coloured polygons. Their colours may be complementary or such as to produce a slight preponderance of one colour. The elements may be separated by dark lines, and perforations for sound transmission may be provided in the separating lines.
Patent GB-430706-A (GB)
Title: Improvements in or relating to studios for recording sound pictures
Filed: 1934-12-12
Abstract: 430,706. Modifying acoustic properties of studios. ELECTRICAL RESEARCH PRODUCTS, Inc., 195, Broadway, New York, U.S.A.-(Assignees of Hunt, F. L. ; 18, Hobart Avenue, Summit, New Jersey, U.S.A.) Dec. 12, 1934, No. 35727. Convention date, Dec. 15, 1933. [Class 13] [See also Group X] Sound-pictures are recorded in a structure comprising a substantially closed room 10 disposed within a studio 9, the walls of the room having a substantially lower soundabsorption coefficient than those of the studio. The walls of the room are arranged at a substantial distance from the walls of the studio and the ceiling 15 of the room is suspended by wires 16. The walls and ceiling of the room are constructed of wood or any material having a highly reflecting surface, and the corresponding parts of the studio are covered with a thick layer of sound-absorbing material 30, such as rock wool or felt. The gap 17 between the ceiling and walls of the room may be filled in with glass. Sounds in the room are reflected by the walls and ceiling thereof and are recorded by means of a microphone 24 arranged in a gap in the wall 11.
Patent GB-741273-A (GB)
Title: Improvements in slip joint connections and the like for dentistry machines
IPC: A61C1/18
Filed: 1953-12-23
Abstract: 741,273. Dental engines. KALTENBACH, A., and HOFFMEISTER, E. Dec. 23, 1953 [March 30, 1953], No. 35798/53. Class 81(2). A dental attachment such as a handpiece or slip joint connection 1 comprises a sleeve within which is mounted a rotatable drive shaft carrying a first cord pulley 3 rotatable with the shaft and having a hub 4 on which is arranged a second cord pulley 5 of larger diameter than the first, the second cord pulley 5 being axially displaceable between an inoperative position beside the first cord pulley 3 and an operative position over the first cord pulley 3 so that a driving cord of a dental engine can be engaged over either the first cord pulley 3 or the second cord pulley 5 according to the speed at which the drive shaft is to be rotated. The hub 4 of the first cord pulley 3 is outwardly extended and is provided with an axial groove 8 for the reception of a grub screw 6 which secures the second cord pulley 5 against rotation relative to the hub 4. A spring-loaded brake shoe 9 is provided between the hub 4 and the hub of the larger cord pulley 5. For rotation of the drive shaft at normal speeds the larger cord pulley 5 is arranged over the smaller cord pulley 3 and is rotated by the driving cord of the engine. To rotate the drive shaft at higher speeds the larger cord pulley 5 is displaced axially and the driving cord engaged over the smaller cord pulley 3. The slip joint connection 1 within which the drive shaft rotates is connected to a joint shaft 2 by a wrist joint frame element 12 which by means of a grub screw 14 engages a peripheral groove in the joint shaft 2 permitting limited rotation of the slip joint connection about the joint shaft 2.
Patent GB-1194965-A (GB)
Title: A Locking Band for Closures for Containers
IPC: B65D45/34
Filed: 1968-07-26
Abstract: 1,194,965. Locking bands for container closures. CONTINENTAL CAN CO. Inc. 26 July, 1968 [14 Aug., 1967], No. 35854/68. Heading B8T. A locking band for the attachment of a closure 15 to a container body 11, the locking band 16 comprising a skirt 44 having inwardly and outwardly directed flanges 47, 50 for fitting in a recess 34 of a metallic member 14 or 32 fitted over the container body, and an inwardlydirected flange 45 for fitting over a closure 15 applied to the container. As shown, the flange 47 is inclined downwardly which ensures a gradual exertion of force upon the upper rounded portion of the cover fitting over the container upon contraction of the locking band. This configuration prevents buckling and distortion of the closure 15. Alternatively, the flange 45 may be inclined upwardly, the flange 47 then being horizontally disposed. The locking band is provided with a toggle action closing lever mechanism 17. The closure 15 described forms the invention claimed in Specification 1,194,966 to which reference is made.
Patent GB-619360-A (GB)
Title: Improvements in or relating to semi-transparent reflectors
IPC: G02B27/10
Filed: 1946-01-31
Abstract: 619,360. Semi-transparent reflectors. DOWNES, F. A., and SPERRY GYROSCOPE CO., Ltd. Jan. 31, 1946, No. 35915. Divided out of 3147/46. Drawings to Specification. [Class 97 (i)] A semi-transparent reflector comprises two bases of transparent material each having a flat surface, assembled with their flat surfaces juxtaposed, these surfaces each having bands that are rendered fully reflecting, e.g. by silvering, separated by transparent strips. The fully reflecting bands may be parallel with one another and the bases may be relatively movable in a direction at right angles to the length of the bands. A film of liquid may be interposed between the flat surface, the refractive index of this liquid being substantially equal to that of the material from which the two bases are formed.
Patent GB-1383119-A (GB)
Title: Neutral density optical filter element
IPC: C23C14/54
Filed: 1972-08-01
Abstract: 1383119 Optical filters EASTMAN KODAK CO 1 Aug 1972 [2 Aug 1971] 35957/72 Heading G2J [Also in Division C7] A neutral density optical filter comprises a transparent substrate, e.g. of a polyester, carrying a five-layer coating of which the first, third and fifth are of a metal or metal alloy, e.g. of Ni, Cr, Fe, having a high index of refraction, and the second and fourth are of a dielectric material, e.g. silicon monoxide, having an index of refraction less than that of the metal or alloy. The layers are formed by vacuum deposition, see Division C7. The thickness of each dielectric layer is controlled to ensure minimum reflectance in the preceding metal or alloy layer.
Patent GB-382127-A (GB)
Title: Improved manufacture of fertilizers having a base of ammonium magnesium phosphate
IPC: C05B7/00
Filed: 1931-12-30
Abstract: In a process of manufacturing fertilizers having a base of ammonium magnesium phosphate, burnt plaster (calcined natural calcium sulphate) either alone or in admixture with hydrated calcium sulphate or with other dry or moist products acting as fertilizers is added to precipitated and moist ammonium magnesium phosphate to obtain a dry product which is afterwards pulverized to the desired degree. Potassium is preferably added in the form of the sulphate whereby a mixture of potassium sulphate and calcium sulphate is obtained which is about four times less soluble than potassium sulphate.