baber/WOPTO huggingface dataset:
Patent GB-577282-A (GB)
Title: An improved manufacture of aromatic hydrocarbons
Filed: 1941-05-01
Abstract: <PICT:0577282/IV/1> A non-naphthenic hydrocarbon oil boiling between 150 DEG  and 550 DEG  F. derived from any source, is subjected to a heat treatment above 500 DEG  F. in the presence of hydrogen and a dehydrogenation catalyst.  The resulting aromatic hydrocarbons, after fractionation to obtain a product boiling in the desired range is purified by extracting with a selective solvent for aromatic hydrocarbons, washing with a highly paraffinic hydrocarbon having a boiling range different from that of the desired aromatic hydrocarbon and recovering the latter from the washed aromatic extract.  In the Figure, oil from supply tank 1 and hydrogen from a holder 5 are heated and passed to a reactor 11 containing a dehydrogenation catalyst maintained at 850-1050 DEG  F.  The products are cooled and passed to a separator 15, the low molecular hydrocarbons such as methane being recycled.  The liquid products are fractionated in a still 21 to give a light fraction which is removed by pipe 22, a heavy fraction which is removed by pipe 23 and the desired fraction which, in the case of toluene, boils between 200 DEG  and 250 DEG  F. and is collected in a tank 25.  The toluene &c. enters the bottom of a tower 29 in which it meets a downward stream of solvent, such as liquid sulphur dioxide from a tank 30.  In place of liquid sulphur dioxide, phenol, cresylic acid, furfural, nitroaniline, chloraniline and chlorbenzene may be used.  The raffinate from tower 29 passes to a still 33, the recovered solvent being returned to the tank 30 and the hydrocarbons to the reactor 11.  The extracted aromatic hydrocarbon passes to a second tower 38 in which it is washed with a paraffin diluent from tank 39 either boiling below the aromatic hydrocarbon product, such as pentane or boiling above it such as heavy naphtha or light kerosene.  A second raffinate passes to a still 44 to separate the solvent, hydrocarbon and paraffin diluent. The secondary extract containing the aromatic product passes to a still 50 to recover the latter and the solvent. Finally, the toluene &c. is freed from olefines by an acid wash and distilled in a still 57 to give the pure product which is collected in a tank 59.  As dehydrogenation catalysts, the following are mentioned: alumina gel, activated alumina, peptised alumina, silicaalumina gels, hydrofluoric and fluosilicic treated alumina mixed with an oxide or sulphide of a metal of Group VI of the Periodic Table, e.g. an oxide of molybdenum, chromium, tungsten, vanadium, cobalt or nickel.  The catalyst may be used dispersed in the stream of hydrocarbon.
Patent GB-566146-A (GB)
Title: Improvements in and relating to spark plugs
IPC: H01T21/02
Filed: 1943-04-08
Abstract: 566,146. Spark-plugs. MENA, P. R. April 8, 1943, No. 5652. Convention date, Oct. 20, 1942. [Class 7 (iv)] A radio - shielded spark-plug comprises a hollow metal casing 12 and a central electrode C surrounded by compacted plastic material F which seals the electrode within the casing and is located above a ceramic tip D. The casing is preferably in one piece and has a taper seating 17 which receives a copper bushing E. The casing is also grooved at 22 for locking the thermoplastic material in position. The central electrode preferably includes a lower portion 25 of nickel steel and an upper part 26 of molybdenum. The electrode fits in a steel plunger 31. The ceramic tip preferably of aluminium oxide is counterbored at 43 and bevelled at 41 to lock the thermoplastic material. After assembling the ceramic tip, Fig. 8, thermoplastic powder, preferably " micalex " or " micalite," is poured in. The plunger 31 is then forced downwards under high pressure (up to 25,000 pounds) with a suitable degree of heat. Some of the material is forced past the plunger and forms an inner sleeve 15. After cooling, the plunger is drilled away to the form shown in Fig. 1, providing a recess to receive a radio shielded terminal.
Patent GB-357922-A (GB)
Title: Process of producing salts of the hydrofluosilicic acid
IPC: C03C17/00
Filed: 1931-02-23
Abstract: Salts of hydrofluosilicic acid are produced by mixing fluorides with a solution of hydrofluosilicic acid, containing preferably 30-50 per cent by weight of acid, and introducing silicon fluoride.  Alkali, alkaline-earth, ammonium or other metallic silicofluorides may be thus produced.  The acid acts catalytically, but when siliceous fluor-spar is employed, it is also in part used up in the reaction. Heat or pressure or both may be employed.  Soluble silicofluorides produced may be treated with other salts to give selected silicofluorides Thus sodium silicofluoride may be obtained from the calcium salt.
Patent GB-311846-A (GB)
Title: Improvements in hammock seats
IPC: A47C4/30
Filed: 1928-02-23
Abstract: 311,846. Fry Bros., Ltd., and Fry, G. F. Feb. 23, 1928. Folding seats; seat bottoms and backs.-In a hammock chair of the pivoted X-frame type, the frames &c. are made of incorrodible or painted metal and the fabric seating strip is threaded at each end on a bar i, which is removably received in undercut slots h, shaped as shown, in the frames a, b. The bars i are closely adjacent the fixed cross bars f of the frames to prevent, to some extent, accidental removal of the bars i.
Patent GB-778913-A (GB)
Title: Improvements in or relating to apparatus for levelling structures
Inventor: PRYKE FORDHAM
IPC: G01C9/20
Filed: 1954-02-26
Abstract: 778,913. Levels. PYNFORD, Ltd. May 26, 1955 [Feb. 26, 1954], No. 5780/54. Class 97(2) [Also in Group X] Apparatus for levelling building structures damaged by subsidence comprises jacks A<SP>3</SP>, Fig. 1 each driven by an electric motor controlled by electric control devices comprising a relay controlled 'by a contact floating on liquid as described in Specification 770,900 [Group XXXVII], the control devices being mounted on the corresponding part of the wall being raised and the liquid in the control devices being connected by tubes W, Fig. 2, with the liquid in containers E. the levels of liquid in which are gradually raised by the raising of a lever F<SP>2</SP> pivoted at F<SP>3</SP> so that the jacks raise the building in accordance with the movement of the lever F<SP>2</SP>. Each jack control is connected to the appropriate container E along the lever F<SP>2</SP> according to the amount of lift each jack is required to carry out. The lever F<SP>2</SP> is raised by a screwed shaft F<SP>3</SP> driven by an electric motor. Each container has an overflow tube F having an overflow orifice to maintain the level of the liquid which is constantly replenished by a tube F<SP>6</SP>. The float of the electrical control device may be replaced by other movable contact means such as a mechanically or electrically driven contact the movement of which is appropriately interrelated with that of the other jack control means. Specifications 599,317, 629.355, 665.280, 671,312, 757,510 and 765,188 [all in Group X] also are referred to.
Patent GB-205014-A (GB)
Title: An adjustable last for use in making and repairing boots, shoes and the like by hand
IPC: A43D5/02
Filed: 1923-02-28
Abstract: 205,014. Johnson, F. Feb. 28, 1923. Lasts.-In a last of the kind described in Specifications 132,180 and 157,694, wherein a casting comprising two arms set at right angles each terminating in a sole portion is combined with a common heel portion, the two arms terminate respectively in right and left foot sole portions B, B' of equal size and properly shaped so that a boot or shoe can be built thereon.
Patent GB-1148553-A (GB)
Title: A frequency converter for the generation of electrical oscillations
IPC: H03K5/153
Filed: 1967-02-07
Abstract: 1,148,553. Signalling over power lines; generating oscillations. ZELLWEGER Ltd. 7 Feb., 1967 [25 April, 1966], No. 5795/67. Headings H3B and H4R. Signalling over power circuits is achieved by the repetitive connection and disconnection of an oscillatory circuit to the line via electronic switches, the oscillatory circuit being disconnected at a supply voltage peak, connected a half-cycle of the supply voltage later, and disconnected after a further odd number of supply voltage half-cycles. As described the circuit of Fig. 3 is used to generate pulses U s  at the peak of each half-cycle of the supply voltage U, the exact phase of the pulses relative the supply voltage being adjusted by the variable resistor 15 in the phase shifting circuit 14, 15. The pulses U s  are used to synchronize a monostable multivibrator, Fig. 4 (not shown), so that it triggers in one direction at the supply voltage peak, remains in this state for a half-cycle of the supply voltage, and then remains in the other state for an odd number of half-cycles, e.g. 1, 3, or 5, of the supply voltage. The resulting waveform is applied as triggering voltage U t to the circuit of Fig. 1, to trigger the thyristor 12 so that the thyratron is non-conductive for onehalf-cycle of the supply frequency allowing capacitor 10 to charge up to the peak value of the supply voltage, the thyratron is then triggered and stays triggered for an odd number of half-cycles, so that the resonant circuit formed by capacitor 10 and the primary of transformer 9 is closed through the thyristor 12 and diode 11 so that it resonates and applies the resulting high-frequency oscillations to the power circuit over transformer 9.
Patent GB-659499-A (GB)
Title: Improvements in or relating to vacuum-jacketed vessels such as flasks, jugs, jars, and the like
IPC: A47J41/02
Filed: 1949-03-03
Abstract: 659,499. Vacuum-jacketed vessels. EXCELVAC FLASK CO., Ltd., and CATLIN, R. J. March 3, 1949, No. 5819. [Class 64(ii)] In a vacuum-jacketed vessel having a pouring cap 3 screwed on to a case 1, the cap is formed with an annular cavity 7 which is filled, when the vessel is assembled, by a rubber collar 9 surrounding the neck 5 of the inner vessel and engaging the frusto-conical surface of a ring- shaped formation 8 on the cap.
Patent GB-1374725-A (GB)
Title: Benzylidenesemicarbazide compounds having insecticidal activity
IPC: C07C239/00
Filed: 1973-02-06
Abstract: 1374725 Benzylidene semi-carbazides PHILIPS GLOEILAMPENFABRIEKEN NV 6 Feb 1973 [9 Feb 1972] 5833/73 Heading C2C [Also in Division A5] The invention comprises novel compounds of the formula wherein R is a para-substituent selected from H, Cl, C 1 -C 4  alkyl, C 1 -C 4  alkoxy and an amino group substituted by one or two C 1 -C 4  alkyl groups or R represents two chlorine atoms in para and meta positions in the ring; A represents H, C 1 -C 4  alkyl optionally substituted by halogen or phenyl, or a cyclopropyl group ; B represents H or CH 3  and R<SP>1</SP> is as defined for R other than hydrogen with the proviso that if R is H or Cl and A and B both represent H, R<SP>1</SP> is not Cl or CH 3  which may be prepared by (a) reacting a compound of Formula (3) with a compound of Formula (4) (b) reacting a compound of Formula (5) with a compound of Formula (6) or (c) subjecting a compound of Formula (7) to an alkylation reaction to form a compound of Formula (8)  where Alk represents an alkyl group. Insecticidal compositions comprise a compound of Formula (1) wherein R is a para-substituent selected from H, Cl, C 1 -C 4  alkyl, C 1 -C 4  alkoxy or amino substituted by 1 or 2 C 1 -C 4  alkyl groups or R represents two Cl atoms in para- and meta-positions in the ring; A represents H, cyclopropyl or C 1 -C 4  alkyl which is optionally substituted by halogen or phenyl; B represents H or CH 3  and R<SP>1</SP> is as defined for R other than hydrogen, together with known adjuvants and/or carriers and optionally other known fungicides, acaricides or insecticides.
Patent GB-122095-A (GB)
Title: Pocket Receptacle for Holding Sugar or other Material.
Inventor: ROLPH FRANK ARTHUR
IPC: A45C11/00
Filed: 1918-04-05
Abstract: 122,095. Rolph, F. A. April 5, 1918. Gum and like receptacles. - A cylindrical, square, or other pocket receptacle for holding sugar, seeds, liquids, &c. has a lid or stopper b formed with a scoopshaped extension c so arranged that the lid may be used for removing part of the contents. The lid may have a plain neck b<1> or may be screwed into the mouth of the receptacle. The lid may be provided with a mark d to indicate when it is in the correct position for withdrawal. The receptacle may be bottle-shaped and may be made of metal, wood, ivory, cardboard, &c.
Patent GB-1443377-A (GB)
Title: Carpet sweepers
IPC: A47L11/33
Filed: 1974-02-08
Abstract: 1443377 Carpet-sweepers; suction cleaners PRESTIGE GROUP Ltd 24 Jan 1975 [8 Feb 1974] 05852/74 Heading A4F A carpet-sweeper comprises a casing having within it an endless flexible band 10 having outwardly projecting sweeper elements 11 and supported on members 6, 7, means for driving the band 10 around the members 6, 7 in a predetermined single direction when the sweeper is moved forwards and backwards over a carpet, and means, e.g. a dust pan 23, for collecting dust swept by the band 10. As the sweeper is moved to and fro, a supporting wheel 13, mounted in horizontal slots 16, at each side of the sweeper engages alternately drive bands 8, 20 on the members 6, 7.
Patent GB-399712-A (GB)
Title: Improvements in and relating to electric fuses
IPC: H01H85/42
Filed: 1933-02-27
Abstract: 399,712. Fusible cut-outs. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London.-(Assignees of Hermann, B. R. ; 292, North Street, Pittsfield, Massachusetts, U.S.A.) Feb. 27, 1933, No. 5917. Convention date, Feb. 27, 1932. [Class 38 (i).] In an. expulsion fuse, the fusible element 19, Fig. 2, is enclosed in an inner tube 15 suspended within the usual outer tube 10. The tube 15 is closed at the bottom by a friction fitting stopper 22. The action of the fuse at various overload currents is thus graduated, the tube 15 and stopper 22 remaining intact at low currents, the stopper being blown out at intermediate currents, and the tube bursting at heavy currents. The inner tube is fitted with hard wire terminals 23, 24, the upper of which is attached to a supporting button 18 which may be secured directly to the upper stopper 21 or spaced therefrom.
Patent GB-108443-A (GB)
Title: Device for Steadying Cinematograph Pictures.
Inventor: DUNLOP JOHN
IPC: G03B1/42
Filed: 1917-04-27
Abstract: 108,443. Dunlop, J. April 27, 1917. Kinematograph apparatus.-Relates to the provision in feeding-mechanism of means for pre. venting excessive movement of the top loop of a kinematograph film at the point where it enters the gate, and comprises a pressure roller H carried by arms F pivoted between lugs C on a base 13 and forced by a spring K into engagement with the inside surface of the film when the device is secured to the top of the gate A.
Patent GB-1239831-A (GB)
Title: Cam and tappet mechanism
Inventor: MISHRA ANIL KUMAR
IPC: F16H53/06
Filed: 1968-02-07
Abstract: 1,239,831. Cam mechanisms. C.A.V. Ltd. 17 Jan., 1969 [7 Feb., 1968], No. 5993/68. Heading F2K. In a mechanism comprising a cam 10 mounted on a rotary shaft 9, a follower roller 15 rotatably mounted on a channel-shaped tappet 17 and a plunger 18 contacting the tappet 17 and being guided for movement in a plane substantially at right-angles to the shaft axis, the axis of rotation of the roller 15 is permitted angular movement in a plane containing the axis of rotation of the cam 10. The roller 15 is rotatably mounted on a pin 16 which is mounted in the tappet 17, and the ends of pin 16 are slidably accommodated in grooves 20 formed in an annular member 21 which is pivotally mounted in a body 19 about an axis located at rightangles to that of shaft 9. In a modification, the roller comprises an outer portion 14 mounted on a part-spherical surface 13, Fig. 3. In a further modification, an intermediate member 14a, Fig. 4, is located between a part-spherical member 13 and a cylindrical member 14.
Patent GB-217880-A (GB)
Title: Improvements in or relating to processes for the welding of aluminium
IPC: B23K35/36
Filed: 1924-03-08
Abstract: 217,880. Thierry, R. June 20, 1923, [Convention date]. Void [Published under Sect. 91 of the Act]. Fluxes.-A flux for the autogenous welding of aluminium comprises a mixture of alkali chlorides with one or more alkaline earth chlorides in such proportions as to constitute an eutectic mixture. In an example, the flux comprises 40-15 per cent of barium chloride, 28-22 per cent potassium chloride, 20-18 per cent sodium chloride, 4-7 per cent lithium chloride, and 8 per cent of cryolite.
Patent GB-547423-A (GB)
Title: Improvements in or relating to the construction of concrete roofs
IPC: E04D13/15
Filed: 1941-05-12
Abstract: 547,423. Coping blocks. SUSSEX & DORKING UNITED BRICK CO., Ltd., and MITCHELL, E. F. May 12, 1941, No. 6147. [Class 20 (iv)] A coping unit is provided with a rearward extension grooved to key with and be inwardly drawn by the concrete or the like forming the roof. Such grooves are undercut, and formed on both upper and lower surfaces. They extend wholly or in part across the surfaces, and may be straight or of chevron or herring-bone shape. Reinforcing rods in the walls may pass between the coping units and across the shallow tank which is filled with the concrete, thus tying the roof and walls to each other. The units may be formed by extrusion.
Patent GB-270852-A (GB)
Title: Improvements in and relating to the separation of tar and ammonia from fuel gases
IPC: C10K1/04
Filed: 1926-03-05
Abstract: 270,852. Holmes & Co., Ltd., W. C., Parker, J., and Henshaw, D. M. March 5, 1926. Condensers, atmospheric and like.-The con. denser chamber is arranged above a receptacle for the condensates both having cooling means, and the collecting receptacle has outlets arranged at different levels so that aqueous condensate and tar may be continuously and separately withdrawn. A tower 1, which is built up from a number of section, has a gas inlet 2 and outlet 3, and a diaphragm 4 dividing it into an upper gas cooler and a lower chamber in which the condensates entering by a pipe 5 are cooled and separated. Cooling water enters a header 6 and traverses pipes 8, 10, 12, 14, 18 between header on each side of the tower until it reaches an outlet 20. An outlet pipe 21 for the tar has an extension 22 to enable the height of liquid in the lower chamber to be adjusted so that the lighter condensate may flow through an outlet 23.
Patent GB-258625-A (GB)
Title: Improvements in or connected with receiving apparatus for wireless telegraphy and telephony
IPC: H02M7/06
Filed: 1925-03-07
Abstract: 258,625. Clemmey, W. J. S., and Turner, W. L. March 7, 1925. Converting pulsating currents into steady continuous currents.-In means for supplying thermionic valve circuits of wireless apparatus with steady direct current from supply mains, the components of the smoothing and voltage modifying arrangements and, when the apparatus is intended for application to alternating current supply circuits, rectifying devices are mounted in a box or are combined with a wireless receiving apparatus. Fig. 4 shows the circuit arrangement employed when the supply is taken from alternating current mains. The primary winding 23 of a transformer is connected to an " adapter " for connection with the mains. Current from the main secondary winding 24 is rectified by valves 13, and is supplied through a smoothing arrangement comprising chokes 21 and condensers 5, 7 to output terminals arranged as shown to afford supplies at different voltages, a variable resistance 9 being provided for regulating the voltage at the middle terminal. The filaments of the rectifying valves are supplied by an additional secondary winding 25 on the transformer. In an alternative arrangement for use when supply is taken from direct current mains, the transformer and rectifying devices are omitted, and high resistance chokes are employed for stepping down the voltage. Referenee has been directed by the Comptroller to Specifications 213,395 and 227,189.
Patent GB-563106-A (GB)
Title: Continuous form envelopes
IPC: B31B27/00
Filed: 1943-04-19
Abstract: 563,106. Envelopes. WILLIAMS, W. P. (Standard Register Co.). April 19, 1943, No. 6271. [Class 94 (ii)] [Also in Group XV] A continuous strip of envelopes, which are readilv detachable from each other, is formed from two superposed webs 1, 2, Fig. 3, which are united by adhesive along three margins of each envelope without folding, the strips having marginal perforations, notches, tongues, &c. 4 for engagement by a strip-feeding device for feeding the webs through the envelope-making machine and through printing-mechanism, if desired. The envelope'sections have transverse weakening-lines 3, and the marginal strips may have longitudinal weakening-lines. The strip 1 may be wider than the strip 2, and may be gummed and folded over to form closure flaps. The strip 1 is drawn from a receptacle 11, Fig. 2, and over a table 14 by pin-wheels 16, on which the strip is held by slotted guides 17. A ribbed roller 23 applies transverse lines of adhesive, and rollers 26 apply the longitudinal lines. The second strip 2 is drawn from a receptacle 12, and the strips are pressed together by rollers 30, which may be heated. The upper set of rollers is raised intermittently by a cam to avoid strain on the strip. The margins are broken or cut off by discs 36, unless required for feeding the strip through printing-mechanism, in which case the discs are raised out of action.
Patent GB-1392207-A (GB)
Title: Means for indicating temperature changes
IPC: G01K5/70
Filed: 1972-02-10
Abstract: 1392207 Temperature change indicator A LATTER & CO Ltd and P E CANETTYCLARKE 9 May 1973 [10 Feb 1972] 6349/72 Heading G1D A temperature change, for example a temperature departure from a required temperature in a cold store for foodstuffs, is indicated by the initiation and extent of flow of microgranular material, for example sand, through an aperture which is initially closed by a bi-metallic strip. Since the dimensions of the strip-thickness t and length L are related to the strip deflection d and temperature change T by the equation where K is a constant for any given strip material suitable choice of strip dimensions will initiate strip flow at any required temperature change. The apparatus comprises a box having a sloping partition which separates an upper compartment from a lower. By reversal of the bi-metallic strip, flow may be initiated by a lowering of temperature. More than two vertically spaced compartments may be used to indicate a series of temperature variations. Layers of different coloured sand may be initially placed in the upper compartment so that the duration of a temperature change may be more easily estimated. The action of the strip may, alternatively, unlatch a ratchet wheel of a timing mechanism to record the duration. The aperture is preferably approximately eight times the grain size in diameter.