baber/WOPTO huggingface dataset:
Patent GB-342241-A (GB)
Title: Improvements in and relating to pedal actuated elevating trucks
IPC: B62B3/06
Filed: 1930-06-16
Abstract: 342,241. Hand-trucks. LEWISSHEPHARD CO., 125, Walnut Street, Watertown, Massachusetts, U.S.A. June 16, 1930, No. 18339. Convention date, June 20, 1929. [Class 108 (i).] An elevating truck is provided with a lifting lever having a pedal, so positioned as to enable the operator, when grasping the vertically positioned steering handle, to project his full weight upon the pedal so that the initial lifting force applied by the momentum of the full weight of the operator to the lever to start the lifting mechanism from a position of rest will greatly exceed that produced by the static application of his weight to the pedal. As shown, the truck comprises a wheeled frame 11, having a steering handle 10 and a lifting frame 18. The lifting lever 43, 46 provided with a pedal 45 is adapted to lift the frame in two stages, and to this end is provided with pawls 48, 49, symmetrically disposed with respect to the longitudinal axis of the truck, having teeth presenting shoulders 50, 51 adapted to engage, in turn, a projecting rotary shaft 34 on the lifting frame. The lifting frame is locked at successive stages by locking levers 66, also disposed symmetrically to the longitudinal axis of the truck, and adapted to engage the shaft 34 by means of teeth 69. A vertical dashpot restrains the lowering of the lifting frame when the locking levers are released by the pedal 58.
Patent GB-711808-A (GB)
Title: Improvements relating to diazotype processes and materials for producing photomechanical printing plates
IPC: G03F7/022
Filed: 1951-08-02
Abstract: 711,808. Photographic diazotype, layers and photomechanical printing plates. KALLE & CO., AKT.-GES. Aug. 2, 1951 [Aug. 4, 1950], No. 18340/51. Addition to 699,413. Class 98(2) A plate having a layer containing a lightsensitive water-insoluble ester or amide of a sulphonic or carboxylic acid bf an ortho-diazophenol of the benzene series is exposed to light under a (positive) original and developed to cause the diazo compound unacted upon by light to form an azo dye by coupling with an azo coupling component, areas of such dye having the property of accepting greasy ink. The coupling component may be already present in the layer, in which case the plate with the layer is itself claimed in the invention, and development may be effected with alkali, ammonia may be used but is followed by treatment with an aqueous alkaline solution to produce the printing plate; or the coupling component may be present in the alkaline solution, or may be produced from, the lightsensitive diazo compound by a short exposure to light without an original prior to or during development. Particular diazo compounds for use in the invention are described in Specification 708,834. In eleven specific examples the sensitive layer is always provided on an aluminium plate or foil, thus in Example 1 the diazo compound from 2-amino-1-hydroxybenzene-4-[N : N- diphenyl] sulphonamide, designated as 2-diazophenol-(1)-4 [N : N-diphenyl]-sulphonamide or as o-quinone-diazide-(2)-4-[N : N-diphenyl]-sulphonamide, together with a phenol-formaldehyde resin and phloroglucinol dissolved in glycol monomethyl ether are whirl-coated on to a mechanically grained aluminium plate, dried by hot air, and the coating is exposed under an original and developed with ammonia gas to give an image of deep, brown colour; treatment with trisodium phosphate solution and subsequently with phosphoric acid renders the plate ready for printing.
Patent GB-1384944-A (GB)
Title: Variable transfer signal apparatus
IPC: H03G5/22
Filed: 1972-04-20
Abstract: 1384944 Automatic gain control MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 20 April 1972 [20 April 1971 10 Aug 1971] 18388/72 Heading H4R  The incidence of noise during quiet passages of a signal is reduced by increasing the attenuation in the signal path or by varying the cut-off level of a high or low pass filter. In each case, the signal path incorporates a series and a shunt impedance (shown collectively at 2, Fig. 1), the resistance impedance in one of the paths being adjusted by a control voltage developed on a capacitor 7. The latter is charged from a constant voltage source by closure of a switch 6 when an amplified 4 and rectified 5 portion of the input signal is below a threshold. The capacitor 11 (Fig. 2), is charged from source E via a resistor 10 and discharged via a diode 12. An additional resistor and a forward-poled series diode may be connected in shunt with the resistor 10 so as to alter the attack characteristic of the charging circuit and hence of the onset of changed attenuation (reduced volume). In Fig. 4, the signal path series impedance is represented by a resistor 50 while the shunt impedance is represented by the resistance of the series diodes 47, 48, 49 and transistor 46. In operation, transistor 25 amplifies a portion of the input signal at terminal 21 and supplies it via emitter follower 30 to a voltage doubling rectifier 33, 34. If the signal on capacitor 35 exceeds a threshold (which may be adjusted by a manual control), transistor 38 saturates and thereby effectively earths control capacitor 45 so as to cut-off transistor 46 and thus rapidly increase the shunt attenuation. When the input signal level drops below the threshold, transistor 38 cuts-off thereby restoring the constant charging voltage provided by Zener diode 41. Consequently transistor 46 is slowly turned-on as the charge on 45 builds-up thereby decreasing the attenuation and thus lowering the gain of the circuit. In alternative arrangements the shunt resistance may be a transistor, an FET or the series connection of a resistor and two diodes (Figs. 5, 6 and 7, not shown). In Fig. 9 (not shown), the signal path series impedance is an FET while the shunt impedance is a capacitor (63) whereby a low pass filter is formed. As the charge on the control capacitor (45) builds-up due to a low level input signal, the series resistance of the FET slowly increases thereby decreasing the cut-off frequency of the filter (and of course increasing the attenuation of the circuit). Under high signal level conditions, the cut-off frequency is so high (in excess of 10 kHz, Fig. 11, not shown), that there is no frequency distortion of the signals. A resistor may be connected in series with capacitor 63. The FET may be replaced by a transistor or a diode assembly. A high pass filter working in the inverse manner may be used in addition to or instead of the low pass filter.
Patent GB-718997-A (GB)
Title: Improvements in and relating to polyacrylonitrile solutions
Inventor: CAMERON WALTER GLEN
IPC: C08J3/09
Filed: 1952-07-22
Abstract: Polymers containing at least 80 per cent. of acrylonitrile in the molecule, such as polyacrylonitrile and copolymers with styrene, methyl acrylate, and vinyl acetate, are dissolved in a solution of lithium bromide, lithium iodide, sodium iodide, or zinc chloride in a mixture of acetone or acetonitrile, or both, and at least one compound chosen from water, ethyl lactate, and water-miscible aliphatic monohydric alcohols containing not more than 6 carbon atoms in the molecule.  Fibres may be spun from the solutions by extrusion into water.  Specifications 672,775 and 714,530 are referred to.
Patent GB-1075739-A (GB)
Title: Lathe
IPC: B23Q16/04
Filed: 1966-04-27
Abstract: 1,075,739. Lathes. WEBKZEUGMASCHINENFABRIK GILDEMEISTER & CO. A.G. April 27, 1966 [May 13, 1965], No. 18467/66. Heading B3T. A lathe comprises a pivotable head-stock 2, Fig. 1, having two coaxial or parallel work spindles (4), the chucks 37 of which project from opposite ends of the head-stock, and a compound slide 36 which carries a plurality of tools. The head-stock is fixed to a vertical shaft (3), Fig. 3 (not shown), which is pivoted to bring a chuck 37 from a loading position 41, Fig. 1, to an operating position 39, by a gear drive (15), (17), driven by a motor (16), Fig. 3 (not shown). Each spindle 4 supports a gear 6, Fig. 9 (not shown), which meshes with a gear (10) when in the operating position, so that the spindle is rotated by a motor (12) through a belt drive (13), change gears (14), and gears 10 and 11, gear 10 being movable axially by an hydraulic piston (9). The pivotal movement of the head-stock is limited by a stop (18), fixed to the bed 1, Figs. 5 and 6 (not shown), which co-operates with one of two abutments (19) carried by the head-stock. Each abutment is adjustable by two wedges (20) and set-screws (21), and after the head-stock has been pivoted, the abutments (19) are clamped against stop (18) by one of two bolts (22), actuated by an hydraulic piston (24). The head-stock is also clamped on to the bed by an hydraulic piston (25), Fig. 3 (not shown). In a modification, the head-stock is clamped to the bed by two ring segments (28), Figs. 7 and 8 (not shown), which are actuated to clamp two discs (27) by a left- and right-handed screw (30), (31), rotated by a gear segment (34a) actuated by an hydraulically controlled rack (34). Shaft (3) may be vertical, or it may be inclined to the vertical at an acute angle.
Patent GB-1180317-A (GB)
Title: Centrifugal Separator
Inventor: THYLEFORS HENRIC WILHELM
IPC: B04B1/18
Filed: 1968-04-18
Abstract: 1,180,317. Centrifugal separator. ALFALAVAL A.B. 18 April, 1968 [18 May, 1967], No. 18478/68. Heading B2P. In a centrifuge of the kind described in Specification 930,159 the first disc set section 10 has a substantially smaller overall diameter than the second disc set section 11. The centrifuge may be used for separating a mixture of whey, cream and cheese grains into its respective components. It is stated that, as a result of this construction, owing to the considerable radial distance between the outer edge of the divider disc 12 and the outer edges of the discs in the first disc set section 10 the whey passes practically completely inwardly through the section 10 and thence through the passage 13 into the second section 11 where the remainder of the cream in the whey is separated out and discharged into the chamber 14. The whey is thus prevented from leaking past the outer edge of the disc 12 and reaching the heavy liquid discharge passage 16 without its content of cream having had any opportunity of being separated out.
Patent GB-697422-A (GB)
Title: Improvements in or relating to runners and runner-supporting means for draw-curtainsand the like
IPC: A47H1/06
Filed: 1951-08-07
Abstract: 697,422. Suspending curtains. ROUTLEDGE, J. H., and ROUTLEDGE, F. June 17, 1952 [Aug. 7, 1951], No. 18538/51. Class 52(v) A curtain suspension device comprises overlapping tubular conduits a supported and connected by twin saddle members j which in part encircle the conduits and are provided with a socket lug k which engages the upstanding portion h<SP>1</SP> of a bracket h. At the outer ends of the conduits single saddle members are provided. Clamp screws l hold the conduits in adjusted position. The rollers c are freely mounted in pairs on pins d passing through plate-like members e to which curtain hooks f are attached. End stops with rings to receive the end hook of a curtain are provided.
Patent GB-1000372-A (GB)
Title: Tubular springs composed of rubber or of a plastics elastomer
IPC: F16F1/42
Filed: 1962-05-15
Abstract: 1,000,372. Rubber springs. K. PLANTA. May 15, 1962 [May 19, 1961], No. 18644/62. Heading F2S. A hollow spring constituted by a body of revolutions and made of rubber or elastic synthetic plastics material and of the kind having apertured ends for the reception of fastening members and a constriction 10 in one crosssectional plane which counteracts expansion of the elastic material is characterized in that the constriction subdivides the spring into unequal part-height portions 11, 12 when the member is in the non-loaded state. The spring has a low rate until the curved faces bear against one another when the spring characteristic rises steeply. The constriction 10 has an arcuate concave outer surface 10a and a knife-edged inner surface 10b. The outer wall surfaces of the upper and lower parts 12, 11 have arcuate and concave portions 12a, 11a respectively which are of larger radius of curvature than the surface 10a and which merge into frustoconical surfaces 14a, 13a at the upper and lower ends of the spring.
Patent GB-242348-A (GB)
Title: Improvements relating to means for indicating the tension on wire when being wound on guns and the like
IPC: G01L5/06
Filed: 1924-08-06
Abstract: 242,348. Armstrong, Whitworth, & Co., Ltd., Sir W. G., Hadcock, Sir A. G., and Forster, G. Aug. 6, 1924. Addition to 199,082. Coiling. - In an apparatus according to the parent Specification for indicating the tension on wire when being wound on guns, the end of the spring moved when tension is placed upon the wire in use is provided with a detachable sleeve sliding over a fixed graduated cylinder. The frame 1 is provided with guides 2 over which slides an inverted U-shaped piece carrying an axle 4 on which is mounted on ball bearings a pulley 6. The axle 4 slides in slots 7 in the frame. A bolt 8 passes upwards through the U-piece and has secured by a wing nut 9 at its end a sleeve 10 which slides over a cylinder, slots and guides 11 being formed on the sleeve and cylinder so that the sleeve may be taken off and replaced in one of several angular positions. The cylinder may be provided with several scales corresponding to different diameters of wire, the sleeve being adjusted so that a peep-hole in it travels over a scale corresponding to the wire in use.
Patent GB-733175-A (GB)
Title: Improvements in apparatus for forging crank-shafts and like work-pieces
IPC: B21K1/08
Filed: 1952-07-24
Abstract: 733,175. Forging-machines. ENGLISH STEEL CORPORATION, Ltd., COMPAGNIE DES FORGES & ACIERIES DE LA MARINE & DE ST. ETIENNE, [formerly COMPAGNIE DES FORGES ET ACIERIES DE LA MARINE ET D'HOMECOURT], and CLEGHORN, G. S. April 29, 1953 [July 24, 1952], No. 18782/52. Class 83 (4). Making crank shafts.-In a modification of the forging apparatus described in Specification 622,938, the movement of the central die 4a, 4b is transmitted to the end dies 8 by toggle links 12 which exert an increasing pressure on the end dies as the working stroke proceeds. The links are pivoted on pins 13 carried by the main crosshead 10 and have V-shaped ends 12a which engage a complementary part of bearing pins 14- pivotally mounted in the cradles 3 carrying the end dies.
Patent GB-369823-A (GB)
Title: Teapot
IPC: A47J31/06
Filed: 1931-06-30
Abstract: 369,823. Teapots. GELL, J., 123. Upper Tollington Park, Stroud Green, London. June 30,1931, No. 18874. [Class 129.] A pot has a tea leaf container C with projections F and recesses D ; the container normally rests on projections B so that the leaves are out of contact with the hot water. On placing the lid on the pot and turning it, projections J on the lid turn the container so that the recesses D are placed opposite the projections B and the container can drop to its lower position, as shown in Fig. 1, in which the leaves are in contact with the water. The lid follows the container and this can be lifted by engaging the projections J under lugs F.
Patent GB-1485203-A (GB)
Title: Process for producing light weight concrete and to apparatus for the performance of said process
IPC: B28C5/46
Filed: 1975-05-06
Abstract: 1485203 Mixing concrete H KATZENBERGER 6 May 1975 [6 May 1974] 18880/75 Heading B1C In a method of making lightweight concrete consisting of expanded polystyrene, cements and sand, polystyrene granules are weighbatched and subjected to pressure in a transfer container, and then to a lower pressure in the mixer. In Fig. 1 the granules 8 are supplied from a hopper 3 and weigh batcher 18 to a pressurized transfer container 2 and then transferred to a mixer 1 at a lower pressure. The temperature in the mixer is 100-110C and the pressure 0-0.5 atom; pressure in the transfer container may be 0.7 atom. Fig. 2 shows the transfer container into which compressed air is introduced through nozzles 11. The discharge valve 14 is operated automatically when pressure reaches a predetermined value and granules are discharged into the mixer by air pressure assisted by air from nozzles 12. There is a check valve 16 in supply conduit 9 from hopper 3, and a pressure release valve 17 enables the transfer container to be filled.
Patent GB-927599-A (GB)
Title: Method and apparatus for mechanically packing goods
Inventor: HANSEL OTTO
IPC: B65B11/16
Filed: 1959-06-03
Abstract: 927,599. Wrapping machines. OTTO HANSEL JUNIOR G.m.b.H. June 3, 1959, No. 18912/59. Class 94(1). Articles are placed in a mandrel, the mandrel and articles are wrapped leaving an open end, the mandrel is withdrawn and the package finally closed. The final closure may be effected by flattening the wrapper mouth and providing a sealing strip. The mandrels a, of open channel shape, are fed from a return conveyer 6, Figs. 11, 12 on to a conveyer 5 running beneath a holder 9 for articles to be wrapped. The plunger 12 which feeds them on to the conveyer 5 also places a stiffening insert b from a magazine 11 into each mandrel. Articles from the holder are placed by means not described, in the mandrels which are then transferred by pushers 15, 17 to a further conveyer 18 where another insert d is laid on the articles. Plungers 22, 27 carry the filled mandrels through conventional folding apparatus 25-30 in which a wrapper 24 is first folded to tubular form about each mandrel and has one end closed and sealed. A reciprocating gripper 33 withdraws each mandrel from the package, the contents being retained by a member 32 and the mandrels sliding down a shoot 34 to the return conveyer 6. The open package end is then folded by conventional means 37 to produce a seam 38 which is sealed by a strip 39, folded by a pair of jaws 43 initially about a removable bar 44 and finally about the seam. A tearing strip or handle may be incorporated in the seal,
Patent GB-376004-A (GB)
Title: A new or improved protective device for use with tubes
IPC: B65D59/06
Filed: 1931-07-01
Abstract: 376,004. Protecting pipes or tubes. WELLINGTON TUBE WORKS. Ltd. and WHITE, J. T., Great Bridge, Tipton, Stafford. shire. July 1, 1931, No. 18952. [Class 94 (i).] A device for protecting the threaded ends of pipes or tubes comprises a cup-like member 3 entirely closed at one end 4 formed of metal or synthetic resin, the circumferential wall being concentrically arranged so that the cap may be pushed over the screw-thread 2 of the pipe. The wall may be punched inwardly at 7, Fig. 4, and the cap screwed upon the thread, or the punching may take place after the cap is in position. In the form shown in Fig. 6, the cap 11 is formed as a truncated cone to fit a tapering thread 10.
Patent GB-463159-A (GB)
Title: Carriages for vehicles moved principally in one direction
IPC: B60G21/04
Filed: 1936-07-08
Abstract: 463,159. Vehicle spring-suspensions. OSTER, L. E. W. MONTROSE-. July 8, 1936, No. 18982. Convention date, July 8, 1935. [Class 108 (ii)] [Also in Group XXXIII] In order to avoid twisting moments acting on the undercarriage during travel and also pitching movements caused by starting and braking an undercarriage for vehicles, including aircraft,which principally move in one direction, has its wheels, skids, &c. connected to bell-crank levers, the longer arms of which are inclined at an acute angle in the direction of motion and the shorter arms of which are connected to springs which are in one plane operatively connected together and provided with one or more cross balancing springs. As shown, the wheels 9 ... 12 are carried bv inclined arms 5<1> ... 8<1> of bell-crank levers mounted on the ends of the undercarriage longitudinals 1, 2, while the shorter vertical arms 5<11> ... 8<11> are connected at each side to helical springs 13, 14, 16, 17 interconnected by rods 15, 18 respectively. The forward and .rearward springs are respectively connected to the ends of laminated springs 19, 191 swivelly and centrally mounted at 21, 21<1> to the cross-members 3, 4 of the undercarriage.
Patent GB-517358-A (GB)
Title: Improvements in or relating to steam generators
IPC: F22B29/02
Filed: 1938-07-07
Abstract: 517,358. Forced-flow steam boilers. LA MONT, W. D. July 7, 1938, No. 18995/39. Divided out of 517,323. Drawings to Specification. [Class 123 (ii)] In a forced-flow boiler having groups of coiled tubes arranged around a combustion chamber, the inlet ends of the tube groups are connected to an inlet chamber provided with baffles for guiding the water into the tubes without forming eddies as described in Specification 517,323, in a boiler having a restricted flow beyond the inlets.
Patent GB-190115-A (GB)
Abstract: 190,115. Koppers Co., (Assignees of Sperr, F. W., and Hall, R. E.). Dec. 8, 1921, [Convention date]. Carbon dioxide; sulphuretted hydrogen.-Sulphuretted hydrogen and other gaseous impurities such as carbon dioxide and hydrocyanic acid are removed from gases by passing the latter into contact with a solution of a non-volatile alkali carbonate, bi-carbonate, hydrate or mixtures thereof, and the absorption solution is regenerated and the sulphuretted hydrogen &c. removed by heating the solution and regulating the pressure. The gas such as coke oven gas enters the scrubber 1 which is preferably of the bellwasher type, through the pipe 2 and after meeting the absorbing liquor such as sodium carbonate solution leaves by the pipe 6. The saturated liquor is collected in the tank 8 and is pumped to the evaporator 9 which is heated for example by the steam pipes 10. The pressure in the evaporator is reduced by means of the pump 16 and the sulphuretted hydrogen evolved is passed to the reflux 19 in order to concentrate it, the condensed steam being collected in the tank 20. When the fuel gas contains little carbon dioxide, the liquor collected and cooled in the tank 3 may be returned to the scrubber as it is desirable that the liquor should contain about 4.0-5.5 per cent of sodium bicarbonate, in order to facilitate the decomposition of the hydrosulphide produced. When a large quantity of carbon dioxide has been absorbed, it is liberated by heating under pressure and is conveyed to the condenser 23. The condensed steam may be used to dilute the liquor collected in the tank 3. If hydrocyanic acid is present in the treated gas it is liberated in the evaporator. When the gas does not contain sufficient carbon dioxide to give the required persentage of bi-carbonate in the absorbing liquor, carbon dioxide may be added. The Specification as open to inspection under Sect. 91 (3) (a) includes the use af alkaline earth and other alkaline solutions for absorbing impurities from gases. This subject-matter does not appear in the Specification as accepted.
Patent GB-433822-A (GB)
Title: Improvements in or relating to electron discharge devices
IPC: H01J19/28
Filed: 1934-06-27
Abstract: 433,822. Thermionic valves. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. June 27, 1934, No. 19051. Convention date, June 27, 1933. [Class 39 (i)] Two constructions of the outer electrode of a discharge tube are described which enable heat but not electrons to escape from the interior; in one form the electrode consists of spaced but overlapping plates and in the other the electrode is apertured and surrounded by an insulating member of material permeable to heat rays. In the form shown in Fig. 1, the perforated anode A is surrounded by a mica cylinder S or the two members may be combined by spraying metal to form the anode on to the inside of the insulating tube. The sleeve S may be of de-activated material. In the form shown in Fig. 2, the anode is constructed of sheet metal strips a connected together and overlapping in such manner that they always intercept the electrons, heat rays being reflected outwards as indicated by the line w. The reflecting surfaces of these plates are preferably brightly polished. The ends of the discharge space may be closed by negatively biassed metal or insulating plates.