baber/WOPTO huggingface dataset:
Patent GB-509629-A (GB)
Title: Reflecting apparatus for the observation of radiographic or other diascopic pictures
IPC: G02B27/02
Filed: 1938-02-23
Abstract: 509,629. Viewing-apparatus. MORELLI, E. Feb. 23, 1938, No. 5698. [Class 97 (i)] Reflecting-apparatus for observing radiographic or other diascopic pictures comprises a casing 1 . formed by two substantially triangular side walls, an inclined front wall 2 provided with a window 3 in which the picture is placed, and an inclined rear wall 2<1> having a window for observing the picture by reflection in an adjustable mirror 17 pivoted in the lower part of the casing. The window 3 is closed by a fixed glass &c. plate 4 behind which is another glass &c. plate 5 mounted in a frame 12 hinged at its lower edge 7. The frame 12 rests on rollers 10 mounted on levers 9 which are pivoted at 11 and connected at their lower ends by tension springs 13 to fixed points 14, so that the frarrie can be turned about'the hinge 7 for the insertion of a picture,. and will return to its closed position, under the action of the springs 13, when released. The mirror 17 is mounted on a rotatable spindle 19 and can be held in any desired angular position by a nut 22. An opaque hinged flap 6 can be adjusted to limit the luminous field of the window 3.
Patent GB-671251-A (GB)
Title: A method of producing fibrous plates or boards from straw and wood fibres
IPC: D21J1/00
Filed: 1950-03-07
Abstract: Straw is digested with lime water or "lime cream."  Pieces of wheat straw about 6 inches long may be blown into a digester and agitated with water and lime, e.g. 15 grams per 100 of straw, supplied in two or three instalments, and washed.
Patent GB-1374724-A (GB)
Title: Plasma kilns
IPC: C21C7/00
Filed: 1973-02-06
Abstract: 1374724 Plasma furnace VYSOKA SKOLA BANSKA OSTRAVA 6 Feb 1973 [9 Feb 1972] 5763/73 Heading H5H [Also in Division B1] A plasma furnace for melting metals comprises  a plasma torch 2, a horizontal trough 1, in the melting space of the furnace, having end walls and being movable by supporting tubes 4 in the direction of its horizontal axis within the range of the melting effect of the plasma torch, and an observation glass 11 for the melting space of the furnace which when the furnace operates receives a supply of gas to create an excess gas pressure and divert evaporated metal away from the observation glass. In operation an electrical potential difference is applied between the torch and the trough via two electrically parallel paths comprising impedances 12, the relative values of the impedances of the two paths determining the direction of the plasma stream relative to the trough. The trough may have a double wall (Fig. 3, not shown) defining a space through which water can flow, or may have a number of water tubes in its wall (Fig. 2, not shown). Movement of the trough is effected by a nut running on a threaded rod 8 rotated by an electric motor 10.
Patent GB-724809-A (GB)
Title: Improvements in oil-filled electric transformers
IPC: H01F27/32
Filed: 1953-03-03
Abstract: 724,809. Transformers. SCHOTZ, S. P. June 4, 1953 [March 3, 1953], No. 5876/53. Class 38 (2). An electric transformer system comprises a tank or casing with or without a conservator, the system being made air-tight and only partly filled with oil and having the atmosphere in the system above the surface of the oil reduced to a ,pressure considerably below atmospheric pressure. The reduced pressure atmosphere may have the oxygen removed therefrom by chemical reaction, absorption or like means. Alternatively the reduced pressure atmosphere may comprise an inert gas or vapour which may be introduced into the system below the level of the oil therein. The gases or vapours may be dried before being introduced into the system or they may be continuously removed from, and replaced in, the system during which operation they may be cooled or freed from contaminating substances. A slight entry of gas or vapour into the system may be maintained to counteract any leakage therefrom.
Patent GB-302838-A (GB)
Title: Improvements in pick-up and amplifying devices for use with gramophones and the like
IPC: H04R19/04
Filed: 1928-02-24
Abstract: 302,838. Andrewes, H., and Dubilier Condenser Co. (1925), Ltd. Feb. 24, 1928. Magnetic instruments; electrostatic instruments. - In a combined electromagnetic and electrostatic pickup, the diaphragm and the pole-piece of the electromagnet constitute the electrodes of the variable condenser. The electromagnet has a thin annular winding 5. Fig. 1, arranged between a central pole 1 and an annular rim serving as the other pole. Specification 285,315 is referred to.
Patent GB-1405332-A (GB)
Title: Coated canvas
IPC: B41M1/26
Filed: 1973-02-06
Abstract: 1405332 Polymer coated canvas NIHON HARD COAT COMPUTER SERVICE KK 6 Feb 1973 5890/73 Heading B2E [Also in Division C3] A coated canvas has a coating formed by applying a composition comprising 30 to 40 parts of aqueous polyvinyl acetate emulsion containing about 50% polyvinyl acetate, 18 to 22 parts of an aqueous acrylic resin emulsion containing about 40% of resin and 72 to 88 parts of bulk pigment, and heat drying the coating so that it has a plurality of pinholes. In examples a linen canvas is coated with a composition containing the required resins, titanium dioxide, calcium carbonate and clay powder as pigments, and also an antifoaming agent, antiseptic, ammonia, carboxymethyl cellulose and sodium hexamethaphosphate and the coating is dried at 120‹C. The coated material is used in multicolour printing processes.
Patent GB-262868-A (GB)
Title: Improvements relating to coin freed mechanism
IPC: G07F9/00
Filed: 1925-12-04
Abstract: 262,868. Erebus Manufacturing Co., Ltd., and James, J. E. Dec. 4, 1925. Registering.- Relates to coin-freed mechanism having means for counting the number of times it is operated of the kind comprising a counter E operated by an arm C which carries a scoop B into which the coin falls after operating the coin-freed mechanism. According to the invention, in order to ensure the proper return of the arm C, a coil spring F is connected at its lower end to a part of the coin-freed mechanism having an upward movement after the coin has passed to the money box. In the application, as illustrated, to a coin-freed lock, the upper end of the spring F is connected to the usual catch piece G that retains the bolt H withdrawn until the door is closed, when the clutch is released by the auxiliary bolt K engaging a striking plate.
Patent GB-451964-A (GB)
Title: Improvements in or relating to matches
IPC: C06F3/00
Filed: 1935-02-25
Abstract: 451,964. Matches. RICHARDSON, R., Hillerton, Churchdown, Gloucestershire. Feb. 25, 1935, No. 5934. [Class 50] A protective composition which includes potassium chlorate, sulphur, powdered glass kieselguhr, glue, and gum is applied to match heads. Manganese dioxide, caput mortuurn (charcoal) and potassium bichromate may also be included. In an example a composition of all the above ingredients is applied to match heads made of a composition comprising phosphorus sesquisulphide, zinc oxide, plaster of Paris, asbestos, powdered glass, potassium chlorate, glue, and dye. The Provisional Specification describes the use of potash, manganese and umber oxide of iron as ingredients of the protective composition.
Patent GB-1186965-A (GB)
Title: Acid Recovery Process-Alkylation Process.
IPC: C07C2/62
Filed: 1968-02-06
Abstract: 1,186,965. Alkylating isoparaffins. TEXACO DEVELOPMENT CORP. 6 Feb., 1968 [8 Feb., 1967], No. 5943/68. Heading C5E. In an H 2 50 4  catalysed process for alkylating isoparaffins with an olefin and alkyl sulphate, the improvement comprises passing at least a portion of the hydrocarbon effluent comprising normally gaseous hydrocarbons from the alkylation zone in indirect heat exchange with at least a portion of the contents of the absorption zone effecting cooling thereof. The effluent may be under sufficient pressure as to be in the liquid phase upon leaving the alkylation zone and may be cooled by flash vaporization as: it passes in heat exchange. with the contents of the absorption zone. The effluent may be separated into an acid phase, which may be recycled directly to the alkylation zone, and' a. liquid hydrocarbon phase a portion of which, may also be recycled in indirect heat exchange with at least a portion of the contents: of the alkylationzone. Examples describe: the alkylation. of isobutane with feedstocks comprising propylene-propane and butylene-butane mixtures.
Patent GB-472042-A (GB)
Title: Improvements in or relating to latches for casement windows and the like
IPC: E05B17/20
Filed: 1937-03-01
Abstract: 472,042. Fastenings. TIBBLES, H. J., and RELY-A-BELL BURGLAR & FIRE ALARM CO., Ltd. March 1, 1937, No. 6009 /36. [Class 44] In a pivoted casement fastening the locking arm 1 is retained in the looking position by a detent 10 carried by a spring arm 9 and provided with a cam face 11 to enable the arm 1 to displace it when moving into the locking position. The arm 1 rests in a recess 10<1> on the upper surface of the detent. A finger-piece 13 moves the detent away from blocking position when the arm 1 is to be released. The detent may engage a recess 16 in the catch plate 7. The finger-piece may act on the spring through a lever with a cam surface, or through a sliding block with a cam surface. In another form, the detent is a plunger acted on by a helical spring.
Patent GB-853266-A (GB)
Title: 1,3-butylene glycol
IPC: C07C45/72
Filed: 1957-02-22
Abstract: In a process for the production of 1.3-butylene glycol by subjecting acetaldehyde to aldol condensation and hydrogenating the acetaldol obtained, the aldol condensation is stopped before the percentage conversion of acetaldehyde exceeds 44% and unconverted acetaldehyde is steam distilled from the aldol condensation product after the alkaline substances present have been substantially neutralised.  The aldol condensation is carried out in the usual way using alkaline catalysts such as sodium and potassium hydroxides and carbonates to maintain the pH of the mixture between 9 and 12.  The aldol condensation may be satisfactorily carried out at a temperature of 0-50 DEG C.  The condensation reaction is stopped by neutralising the mixture with an acid, e.g. phosphoric, acetic or sulphuric acid.  The unconverted acetaldehyde is steam stripped from the mixture and the acetaldol is hydrogenated, e.g. by passing over a Raney metal catalyst at 25-65 DEG  C. or higher.
Patent GB-177952-A (GB)
Title: Improvements in conveyors and elevators
IPC: B65G65/00
Filed: 1921-02-23
Abstract: 177,952. Pattullo, D. L., Hardie, R. L., and Gauldie, K. Feb. 23, 1921. Feeding-devices for endless-belt elevators; jigging conveyers.-Loose materials such as root crops are removed from a heap by an upwardly inclined scoop which is advanced against the heap and maintained in a state of continuous vibration. The scoop A, Fig. 1, is suspended from a framework B and is vibrated by unbalanced weights E carried by a. rotating shaft F. As adapted for grading potatoes, an elevator G, Fig. 2, conveys potatoes from the scoop to a grading screen H which effects the separation of the ware from the seed and smaller potatoes. The former potatoes pass on to a picking band K and are delivered to a hopper N. The seed potatoes are separated from the smaller potatoes by a screen J and are delivered by a picking band L to a hopper M. The smaller potatoes pass into a hopper O.
Patent GB-789420-A (GB)
Title: Improvements in or relating to transistor push-pull amplifying circuit-arrangements
IPC: H03F3/26
Filed: 1956-02-28
Abstract: 789,420. Transistor amplifying circuits. PHILIPS ELECTRICAL INDUSTRIES, Ltd. Feb. 28, 1956 [March 2, 1955], No. 6171/56. Class 40 (6). In a circuit in which signals are supplied through an input transformer 2, Fig. 1, to two transistors 3, 4, operating effectively in pushpull which are alternately non-conductive during part of the input signal cycle, an impedance 12 is provided in the common circuit between the transformer and the transistors having a value which is low at the input frequency but high at higher harmonics which are to be suppressed. If the transistors 25, 26, Fig. 6. are of opposite conductivity type then the corresponding electrodes are operated in parallel giving an overall push-pull effect. The impedance 12 is preferably in the form of a damped parallel resonant circuit tuned to the harmonic frequency. In a modification, Fig. 5, the push-pull amplifier is preceded by a stage 20 to which a negative feedback signal is applied from tertiary winding 21 on the output transformer. By employing a potential divider 22, 23 the transistors 3, 4 may be biased for class AB or B working.
Patent GB-230481-A (GB)
Title: Means for balancing centrifugal pumps and fans and similar apparatus
IPC: F04D1/00
Filed: 1925-03-06
Abstract: 230,481. Soc. Rateau. March 6, 1924, [Convention date]. Balancing moving parts. -The impeller of a centrifugal pump with a double inlet is balanced by means of two balance chambers c, c' connected by a passage d of large cross-section which permits the fluid to flow from one chamber to another. A similar passage may connect chambers on a unilateral pump and may also be applied to fans.
Patent GB-1428924-A (GB)
Title: Submersible pump
IPC: F04D13/00
Filed: 1974-02-11
Abstract: 1428924 Submersible pumps SIEMENS AG 11 Feb 1974 [13 Feb 1973] 06195/74 Heading F1C A submersible pump having a motor portion and a pump portion with a support pipe (3) Fig. 1 (not shown) and a delivery pipe (4) comprises a rotor having a clearance S with an adjacent housing wall which is equal to or greater than 0.03 times the outer diameter D of the rotor, and in which, in use of the pump, the ratio of the relative outlet speed of the medium being delivered to the peripheral speed of the rotor is equal to or less than 0.02 at a specific speed of 10 and rising linearly to equal to or less than 0.06 up to a specific speed of 50. The relative output speed is derived from the rate of delivery volume divided by the area of the surface defined by the product of the sum of the circumferential gaps a between adjacent tips of the vanes of the rotor multiplied by the sum of the axial extent b, of the rotor plus the axial clearance S. The housings of the pump and motor and the support and discharge pipes may be pressure die cast or injection moulded.
Patent GB-471481-A (GB)
Title: Improvements in copying telegraph systems
IPC: H04N5/228
Filed: 1936-03-02
Abstract: 471,481. Copying telegraphy. FARNSWORTH TELEVISION, Inc. March 2, 1936, No. 6265. Convention date, March 27, 1935. [Class 40 (iii)] Scanning a two-tone field produces impulses, which control the transmission of an interrupted signal of uniform amplitude. A tape 11, Fig. 1, carrying the matter to be transmitted is moved vertically and projected on a photo-sensitive cathode 19. An electronic image is swept horizontally by a scanning coil 31. Impulses picked up at 23 are applied to a gas-discharge tube 41, which is fed from a high audio-frequency alternator 44 and keys a wireless transmitter 50. A synchronizing signal is transmitted by applying to the tube 41 a pulse from the scanning oscillator 32. Receiver, Fig. 2. The signals are applied to a gas-discharge rectifier 55, which is biassed at 56 to pass only the signals, and is energized by an alternator 59. The output modulates a cathode-ray tube 64 in which the ray is moved in two dimensions and falls on a fluorescent screen 79 with a long time lag to produce a visual image. The signals also modulate a cathode-ray tube 66, in which the ray is moved horizontally and fall on a screen 80 with a short time lag. The light from the screen is focused on sensitive material 93<1> which is moved vertically, synchronously with the tape 11 at the transmitter, by a motor 95, which is fork-controlled or is on mains synchronized with those operating the motor 14 at the transmitter. Specifications 471,493 and 471,494 are referred to.
Patent GB-122204-A (GB)
Title: Electrical Apparatus for Detecting, Measuring and Indicating the Deviation of Boreholes.
Inventor: BRIGGS HENRY
IPC: E21B47/022
Filed: 1917-05-04
Abstract: 122,204. Briggs, H. May 4, 1917. Bore-hole clinometers. - Relates to a clinometer which comprises an electrically - operating transmitter and indicator. The transmitter consists of a plummet p carrying a needle n and suspended from a wire a connected to a terminal mounted upon an insulating support d. The needle n dips into a liquid resistance such as sodium sulphate solution in a dish c made of non-conducting material, upon the sides of which and contacting with the liquid are four electric contacts E, W, N, S shown in the diagram, Fig. 4. These contacts are respectively connected by wires to four terminals on the support d. A five-strand cable is led through a gland r, the strands of which are respectively connected with the five. terminals referred to. The indicator comprises a shallow dish c<1> containing the same liquid resistance into which dip fixed electric contacts E<1>, W<1>, N<1>, S<1>. similarly oriented to the contacts on dish c and a reedle n<1> which is to be moved by hand. The needles n, n<1> are connected to an electric generator q and, of two telephones T<1>, T<2>, one terminal of T<1> is connected to the contacts N, N<1>, the other to the contacts S, S<1>, and similarly one terminal of T<2> is connected to the contacts E, E<1>, and the other to the contacts W, W<1> so that a double Wheatstone bridge is formed. The transmitter is placed in the bore-hole until the needle n takes up a position of rest, the needle n<1> is then moved until both telephones produce minimum sound, the position of the needle n<1> is then similar to that of the needle n and may be indicated by a graduated circle upon the bottom of the dish. If a direct current be used, the telephones may be replaced by galvanometers. Three contacts may be used in the dish in place of four. The liquid in the dish c<1> may be replaced by a stretched resistance wire which is first connected with the contact N, S, and then with the contacts E, W, in which case the position of the plummet point may be ascertained by using a diagram on which are drawn intersecting ellipses representing equipotential lines. The connexion with the wire a may be through earth, in which case a four-strand instead of a five-strand cable will be required. The connexions may be reversed, that is, N may be connected to S<1>, S to N<1>, E to W<1>, and W to E', in which case needle n<1> will take up a diametrically opposite position to needle n. The transmitter may be oriented so that the contacts E, W, N, S point east, west, north and south respectively.
Patent GB-583899-A (GB)
Title: Improvements in unitary blade magazine and blade magazine holder
IPC: B65D83/10
Filed: 1944-04-05
Abstract: 583,899. Safety-razor blade magazine and magazine holder. BENJAMIN, S. H. April 5, 1944, No. 6347. [Class 18] A stack of safety-razor blades 100, Fig. 4, is contained in a casing having a roof member 10, Figs. 1 and 3, from which blade guides 11 project, side members 12 from which curved guides 13 project which are shaped to form a bottom 14, and an end member 15. Portions 16 are flared outwardly and portions 17 downwardly. A compartment for used blades is formed on the top by panels 19, 21, 22 a recess 20 being sometimes also provided. A compartment serving as a magazine for the stack 100 of blades is constituted by a member 23, 24 and panels 12, 10, positioning studs 30 depending from the panel 10 to within the thickness of one blade from the bottom 24. A bowed spring 33 through apertures in which studs 30 extend serves to retard the blades. A blade may thus be slid from the bottom of the stack in known manner.
Patent GB-1118482-A (GB)
Title: Improvements in or relating to a suspension device for a sealed rolling door and the applications thereof
IPC: E05D15/10
Filed: 1967-02-10
Abstract: 1,118,482. Hangers for slidable doors; operation of sliding doors. SOC. ARMETAL. 10 Feb., 1967 [15 Feb., 1966], No. 6407/67. Headings E1J and E2M. In a horizontally sliding door in which the panel P is pressed against its frame or the door opening surround D, when in its closed position to press sealing strips J against the surround and door sill, the guide support rail 22 for the horizontal movement of the door is fixed on a mount 2 which is suspended by two or more parallel link pairs 3 from an element 1 secured to the surrounding wall above the door opening and the rail with panel P can thereby be given a vertical movement and a horizontal movement away from the wall to free the panel P from the seals and held in such position by toggles 7 coupled together by being on a common hexagonal bar 10 and being passed through the dead centre and the door may then be moved horizontally along the guide rail 22, with reversal of the movements to bring the panel back to the closed position. The panel P is adjustably mounted on the hanger 27 by means of the nuts and bolt 28, 29, 30, 31, and the coupling 25/26. As shown the operation may be performed by pneumatic means comprising a jack 15 mounted on the wall above the door and having a piston rod 16 with a head 17 pivoted to the connecting pin 14 of the toggle mechanism 7 so that as the rod is raised, the toggle 7 opens and lifts the mount 2 moving parallel to the door until the link 8c eventually comes up against the stop surface 1c on the element 1 in which position the toggle has slightly passed through its dead centre and the coupling locks in this position, and the door may be slid on its guide 2. A lever mechanism is provided on the inside of the door to lift the door to near dead centre of the toggle and the freeing movement of the door is completed by a torsion spring operating on the common bar 10. (Figs. 5-7).
Patent GB-1137675-A (GB)
Title: Improvements in shelf supports
Inventor: GUILLON JACQUES SILAS
IPC: F16B12/02
Filed: 1965-02-15
Abstract: 1,137,675. Shelf brackets. MASSEYFERGUSON INDUSTRIES Ltd. 14 Feb., 1966 [15 Feb., 1965], No. 6469/65. Heading A4B. A shelf bracket has plates 14, 16 formed with semi-cylindrical parts 17 which seat, in face-to-face relation, in a cylindrical part 12 of a groove 13 in an upright 10 and rock outwards to frictionally engage inside the channel when screws 20 securing the plates together are tightened. The screws have circumferential notices 21 to receive the edges of a channel-section metal insert 24 on the end face of the shelf 22 which is provided with recesses to engage the screws. In modifications the plates are secured together by an H-section extrusion which also engages a rail on a metal insert in the shelf, or the post is inserted in a wall.