baber/WOPTO huggingface dataset:
Patent GB-871266-A (GB)
Title: Improvements relating to free-stroke-piston engines
IPC: F02B71/00
Filed: 1959-06-11
Abstract: 871,266. Free-piston engines and gas generators. DAIMLER-BENZ A.G. June 11, 1959 [June 11, 1958], No. 20052/59. Classes 7(1) and 7(2). A free-piston engine comprises at least two double-acting compressor pistons disposed in series along the longitudinal axis of the engine and each having combustion pistons on both sides to form structurally a stepped piston the or each two adjacent stepped pistons being operative in mutually opposite directions and the two combustion pistons thereof disposed on the inside forming a common combustion chamber and operating in a manner known per se using unidirectional-flow or end-to-end scavenging while the combustion pistons disposed on the outside operate with the use of reverse scavenging those sides of the two compressor pistons which face the combustion pistons disposed on the outside supplying the common combustion chamber with induction air while those sides of the compressor pistons which face the combustion pistons disposed on the inside charge the two combustion chambers disposed on the outside with induction air the diameters of the combustion pistons disposed on the inside being made smaller than the diameters of the other two combustion pistons disposed on the outside. As shown, in the compressor cylinders 17 and 18 there are provided inlet slots 19, 20 through which air is drawn in. During their outward stroke the pistons 11, 12 force air through the two pipes 21 and 22 into the combustion chamber 23. During the inward stroke air is delivered by the two pipes 24 and 25 into the combustion chambers 26 and 27. The engine may be employed as a producer of propellant gases.
Patent GB-893244-A (GB)
Title: Improvements in apparatus for loading and unloading nuclear fuel elements
Inventor: MOULIN MAURICE PIERRE ANDRE
IPC: G21C19/105
Filed: 1958-06-24
Abstract: 893,244. Handling nuclear fuel elements. COMMISSARIAT A L'ENERGIE ATOMIQUE. June 24, 1958 [June 28, 1957], No. 20149/58. Class 39(4) An arrangement for loading and unloading fuel element channels 13 in the graphite core 14 contained within a pressure vessel B supplied with coolant fluid through pipes W, Z, comprises a servicing tube M pivotally mounted at N so that it may be brought into alignment with a selected tube 5 forming an extension of a channel 13, the tube M containing a flexible ram L whereby one or more fuel elements S may be pushed into the channel. In order to retain the fuel elements in the channel upon .withdrawal of the ram a latching unit R is .interposed between the ram and the elements, 'the unit R comprising a cylindrical casing 15 having at its upper end three 120 degree spaced latching fingers 18 which are spring-urged outwardly through openings in the casing. The fingers 18 are held retracted by the wall of the tube 5 but upon further upward movement of the ram the fingers expand into a groove 8 formed in a conduit 1 extending between the channel 13 and its tube 5, whereby the fuel elements are retained. To permit withdrawal of the unit R and the fuel elements from the channel, the casing 15 slidably carries a sleeve 27 to which are fixed three springs 19 which extend through slots in the casing to frictionally engage the tube 5 or conduit 1. Thus when the ram is pushed upwardly the sleeve 27 is held at its lower position within the casing. To withdraw the fuel elements the ram L is moved upwards until the fingers 18 are retracted by engagement with a surface 12 at the top of the conduit 1 the ram then being retracted, the unit R following due to the weight of the fuel element column. Thus the sleeve 27 is moved by the springs 19 to its upper position within the casing 15 whereby the upper edge 27a of the sleeve locks the fingers 18 in their retracted position Fig. 9. In an arrangement for use where the fuel element channels are horizontal (Figs 10-12 not shown) a tubular spring plunger acts on the end of the fuel element stack remote from the unit R, and the fuel elements are unloaded by inserting a push rod through the plunger.
Patent GB-407861-A (GB)
Title: Improvements in or relating to mercury or like electric switches or relays
IPC: H01H29/28
Filed: 1933-07-17
Abstract: 407,861. Mercury and thermal switches and interrupters. TERRELL, H., 17, Lauriston Road, Wimbledon Common, and POOLE, R. R., 6, Devonshire Place, both in London. July 17, 1933, No. 20179. [Class 38 (v).] In a mercury or other conducting liquid switch or interrupter which has the free surface of the mercury &c. in contact with a gas, vapour or liquid in a closed vessel so that when current is passed through a heating coil therein the variation in volume of the gas &c. causes a separation of two or more masses of mercury &c. in corresponding cups or depressions formed in the vessel, the portion of the wall of the containing vessel connecting the cups or depressions wherein the masses of mercury &c. are respectively located extends for a finite distance in a substantially horizontal direction. As shown in Fig. 1 the mercury or other conducting liquid is contained within a U-tube 7 the ends of which communicate with a pair of closed bulbs 3, 4. Normally the mercury completes a circuit between sealed conductors 7, 8 but when the gas in the bulb 3 is heated by passage of current through the resistance coil 9 the mass of mercury separates as shown so that the circuit between the mercury 6 left in the recess 5 in contact with lead 8 and the main mass in the U-tube in contact with the lead 7 is broken. The heating coil 9 may alternatively surround the outside of the bulb 3 or may extend within a depression formed in its upper end. In an alternative form the mass of mercury after breaking contact with that in the recess 6 adjacent the bulb 3 may make a second circuit by engaging mercury in a corresponding recess similarly arranged adjacent to the bulb 4 (Fig. 4, not shown). In a further modification two separate U-tubes separately controlling two separate circuits may be employed. In the further modified form Fig. 6 the mercury connection may be completed to an annular channel formed in the base 18 of the bulb 3, the leads 7, 8 in the mercury circuit passing through the glass pinch 10 supporting the heating resistence 9. If arranged as an interrupter both bulbs may contain heating resistances which are so connected as to be alternately operable.
Patent GB-1254253-A (GB)
Title: Foundry jolt-moulding apparatus
IPC: B22C15/10
Filed: 1970-04-27
Abstract: 1,254,253. Foundry moulding machines. SPO Inc. 27 April, 1970 [29 April, 1969], No. 20186/70. Heading B3F. A jolt foundry moulding machine has a moulding table 12 with a vertically projecting stem 16. The stem 16 is surrounded by a rapper member 24 which moves between an upper position abutting the table and a lower position, to provide jolting. At the lower end of the stem 16 is provided a piston 26 which coacts with a cylinder 28 attached to the rapper member. In operation, pressure fluid is first supplied to ducts 36, 38, 40, 42, 44 to enter a chamber 32 and force the rapper member downwardly to a position limited by ducts 52 which allow the fluid to escape. Simultaneously, the air supply is cut off as the ducts 40, 42, 44 are then out of alignment. Pressure fluid is supplied by a duct 56 to a chamber 30 above the piston 26 and during the downward movement of the rapper member is compressed in the chamber 30. Escape of fluid from the chamber 32 allows the fluid in the chamber 30 to expand, thereby forcing the rapper member 24 upwardly to provide a jolt-strike against the table 12.
Patent GB-808370-A (GB)
Title: Grinding disc for grinding mills
IPC: B02C7/12
Filed: 1956-07-02
Abstract: 808,370. Disc mills. SAITO, T. July 2, 1956 [Oct. 28, 1955], No. 20379/56. Class 59. In a grinding mill comprising vertical oppositely-arranged toothed discs one of which is rotary and the other stationary, each disc is provided at the periphery thereof with a toothed annular disc body 2 subdivided into substantially oval groups of grinding projections 4 by substantially oval grooves 3. The projections in the groups become progressively finer towards the outer periphery of the disc body 2.
Patent GB-534204-A (GB)
Title: Improvements in and relating to apparatus for viewing and projecting photographs andother pictures
IPC: G03B23/12
Filed: 1938-07-11
Abstract: 534,204. Apparatus for viewing and projecting photographs. RAUCH, C. July 11, 1938, No. 20517. [A Specification was laid open to inspection under Sect. 91 of the Acts, Jan. 11, 1939.] [Class 97 (i)] Apparatus for viewing nonrelated pictures on strip material, especially colour photographs, and of the kind using a magnifying lens, is provided with a protective container for the strip which can be inserted into and removed from the apparatus together with the strip. The strip may be wound on a spool in the container. A second container to take up the viewed strip may be provided, but a take-up spool only may be used, in which case the strip is wound back into the supply container after viewing. If no spools are used, the strip is fed by friction or toothed wheels. A support for the apparatus is provided, which permits it to be set at any viewing angle. The apparatus may be fitted on the lens side with a tube terminating in a small projection screen; and where projection on to a large screen is desired, it may be supported on a rigid stand and fitted with a projection lamp housing. As shown in Fig. 1, the apparatus comprises a front casing 1 with recesses 6, 7 for the supply container 10 and the take-up container or spool, and a recess in front of the viewing window 13 to receive an adjustable lens tube 5 ; and a rear casing 2 which may be latched to the front casing and has an exchangeable condenser lens 21 which may diffuse or colour the light incident on the strip a. For transparencies, a lamp housing 29 may be fitted to the casing 2 ; and for opaque pictures, an opening for admitting light to the picture may be provided between the picture and the lens 3. The internal curved surface of the container 10 is recessed to prevent contact of the picture portion of the strip therewith and has edge guides to prevent the strip from shifting laterally. The strip emerges from the container through a slot, and passes between guides formed on the lens 21. When spools 8, 9 are used, they are connected by pin and longitudinal slot means to withdrawable spindles operated by external knobs. These spindles and the lens tube 5 can be pushed completely into the casing 1 when the apparatus is not in use. Space for spare strips may be provided in the casing. The apparatus may be mounted on a stand 28, Fig. 6, having a flexible pillar 27 provided with bows 23, 24 adapted to embrace a cylindrical part of the casing so that the apparatus may be rotated within the closed bows. A rigid stand to which the apparatus may be secured in similar manner is provided for use when the pictures are to be projected ; and in this case the lamp housing 29 is replaced by a housing 36, Fig. 4, containing a strong lamp, a reflector 33, a heat baffle 37 and a condenser 34, 35.
Patent GB-807578-A (GB)
Title: Steroid compounds of the pregnane and androstane series and their preparation
Inventor: BREMER OLE LUDVIG
IPC: C07J1/00
Filed: 1955-07-15
Abstract: The invention comprises 3-keto-4,5-dibromo-, 3-keto-2,4,5-tribromo-, D 4-3-keto-2,4-dibromo-, and D 1,4-3-keto-4-bromo-steroids of the androstane and pregnane series and a process for the preparation of a D 1,4-3-keto-4-bromo-pregnadiene or androstadiene by treating a D 4-3-ketosteroid at a low temperature (0-5 DEG  C.), with at least four (preferably 4 to 8) atoms of bromine per mol. of steroid and, if HBr or other hydrogen halide is used for initiating the process, a sufficiently small proportion of said halide (ca 5 mg./g. steroid), to avoid substitution by bromine in the 6-position and promote the addition of two bromine atoms in the 4- and 5-positions respectively, after which the resulting dibromo-steroid is further brominated to give the 3-keto-2,4,5-tribromo derivative, which is then treated with a dehydrobromination agent.  The bromination is preferably effected in acetic acid, and while bromine is preferred, N-bromosuccinimide or other agent can be used for the tribromide production, the presence of HBr for the second bromination being minimized by addition of sodium acetate or the use of chlorinated organic solvents.  Specified dehydrobrominating agents are collidine and lithium chloride in dimethyl formamide.  In examples: cortisone acetate in chloroform and acetic acid or propionic acid is treated with bromine and a trace of HBr in acetic acid, giving 4,5-dibromopregnane-17a ,21-diol-3,11,20-trione 21-acetate, which (2) is further brominated, adding sodium acetate during the reaction, yielding 2,4,5-tribromopregnane - 17a ,21 - diol - 3,11,20 - trione 21-acetate, also prepared (3), (4) and (5), by using methylene chloride, chloroform, or dimethyl formamide as solvent and irradiating the mixture with visible light; (6) the 2,4,5-tribromo compound is dehydrobrominated by refluxing with collidine giving 4-bromo-pregna-1,4 - diene - 17a ,21 - diol - 3,11,20 - trione 21-acetate; (7) the 2,4,5-tribromo compound is refluxed with collidine in methylene chloride giving 2,4-dibromo-cortisone acetate, also prepared (8) by bromination of the 4,5-bromo compound in methylene chloride followed by treatment as in (7); (9) 2,4-dibromo-cortisone acetate is refluxed with collidine giving 4-bromopregna - 1,4 - diene - 17a ,21 - diol - 3,11,20 - trione 21-acetate.  The Provisional Specification further details the production of 2-bromocortisone acetate by treatment of the 2,4,5-tribromo derivative of (2) above with KCNS or NaI, its subsequent conversion to 1-dehydrocortisone acetate by treatment with collidine, and the formation of 1-dehydrocortisone acetate by chromous chloride reduction of 4-bromopregna - 1,4 - diene - 17a ,21 - diol - 3,11,20 - trione 21-acetate.
Patent GB-808522-A (GB)
Title: Improvements in or relating to gas generating plant including electrical precipitation equipment
Inventor: BROOKS NORMAN COLSTON
IPC: B03C3/68
Filed: 1956-07-04
Abstract: 808,522. Automatic control systems for electrostatic precipitators. STANDARD TELEPHONES & CABLES Ltd. July 4, 1956, No. 20700/56. Class 38 (4). An electrical precipitation plant for cleaning gas generated by a cyclic process is provided with automatically operating means for varying the high-tension voltage applied to the discharge electrodes in direct accordance with normal variations of the electrical resistance of the gas due to the variation in the rate of flow of the gas through the precipitation equipment. In this way compensation is effected for the increase in interelectrode resistance which takes place with an increase of gas flow, and efficiency is improved by reducing the standing current to a minimum during the quiescent portion of the cycle. The curve (a), Fig. 2, shows the fluctuations in gas flow which occur during one operating cycle of a gas generator. From O to A and D to O there is no gas production and at A there is a sharp rise in production followed by a fall to D. The curve (b) shows the corresponding precipitator current in the absence of external control, and the chaindotted line curve (c) shows the discharge current when compensation is effected to maintain it at one or other of two predetermined values. The apparatus comprises an auto-transformer AT connected via terminals H or L of a contactor CTR to a transformer and rectifier unit T-R providing the high-tension supply to the precipitator P. One output terminal of T-R is earthed via an ammeter A and marginal relays VS1, VS2, the relay VS1 being set to operate only at high values of current and VS2 to release at a predetermined low value. The contactor coil is supplied with D.C. via terminals 3, 4. During the time interval O to A, VS2 is operated, VS1 is not operated, and CTR is operated and held over contacts A. At A the discharge current starts to fall and VS2 releases to release CTR and so apply a higher voltage to the precipitator. VS2 re-operates, and at C, VS1 operates to energize CTR and cause a lower voltage to be applied to the precipitator. When CTR operates, VS1 releases, and the cycle is repeated. Specification 724,068 is referred to.
Patent GB-315571-A (GB)
Title: Improvements in electric accumulators
IPC: H01M50/367
Filed: 1928-07-17
Abstract: 315,571. Dean, H., and Chloride Electrical Storage Co., Ltd. July 17, 1928. Cells; gas exits.-An accumulator is provided with a baffle h above the plates a which are arranged at right angles to the bus-bars f. The baffle keeps the plates covered with electrolyte when the cell stands on either sides x, y. The baffle forms the lower side of a box-shaped member which is closed at the end k and open at the opposite end and at the top i. Above the baffle is an anti-spill gas exit comprising chambers n, p communicating respectively with the interior of the cell and the atmosphere.
Patent GB-1033758-A (GB)
Title: Method of and apparatus for the decomposition of metal carbonyl
IPC: C23C18/08
Filed: 1965-05-17
Abstract: A method for decomposing a liquid metal carbonyl to give a particulate product comprises reducing the pressure within a body of the liquid kept at a temperature not exceeding its boiling point. Solid nuclei (e.g. of the same metal as that in the carbonyl or Al2O3, Zr2O3, ThO2, TiO2 SiO2MgO or graphite or metals such as A1, Ti, Mg, Fe, Cu, Ni or Cr) are preferably provided.  The reduction in pressure may be caused by mechanical agitation or by injecting a pressurized stream of the carbonyl into a body thereof maintained at a lower temperature and pressure.  Suitable carbonyls which are mentioned are iron and nickel.
Patent GB-258065-A (GB)
Title: Improvements in and connected with the casting of dentures in metal
IPC: A61C13/20
Filed: 1925-08-19
Abstract: 258,065. Nunn, F. W. Aug. 19, 1925. Casting-machines of the type in which a dental mould q is swung round by a rotating rod e are provided with means for laterally oscillating this rod and the mould carried thereby to ensure uniform casting. This oscillation is imparted (1) by making the rod e a loose fit in its bearing d, (2) by forming eccentric bearing surfaces thereon, or (3) by mounting the frame b on the base k by means of bolts p and springs m, n.
Patent GB-777186-A (GB)
Title: Improvements in or relating to sound-reproducing devices
IPC: G10K15/10
Filed: 1955-07-19
Abstract: 777,186. Transmission systems. PHILIPS ELECTRICAL INDUSTRIES, Ltd. July 19, 1955 [July 22, 1954], No. 20869/55. Class 40 (4). In a system for simulating reverberation in which a signal is magnetically recorded on an endless carrier and reproduced by means of a number of pick-ups connected to scattered loudspeakers, a plurality of units, each unit comprising a recording head (e.g. 11), an erasing head 19 and one or more pick-ups 12-18 cooperates with a corresponding plurality of tracks on the record carrier (e.g. a magnetic drum 1), each recording head except perhaps the first 11 being fed from a pick up of another unit. The connections between the pick-ups and the recording heads may include filters 5 and amplifiers 6.
Patent GB-148998-A (GB)
IPC: G01N7/04
Filed: 1920-07-12
Abstract: 148,998. Arndt, M. Nov. 30, 1915, [Convention date]. No Patent granted (Sealing fee not paid). Gas analysis. - In a gas-analyzing apparatus, the chamber A in which a sample of the gas is trapped, is enclosed within a vessel B containing the absorption medium; the absorption may take place in a bell C &c. interposed between the two vessels. The sample of gas is forced into the absorption vessel B by the rise of liquid from the reservoir F connected to a source of gas under pressure and provided with a device G such that on complete discharge of the sample a gas outlet from the reservoir is opened and further rise of liquid ceases. In the construction shown, the gas-measuring chamber A consists of an inverted U-tube 4, the limbs 3, 5 of which open into communicating chambers 2, 6 sealed with liquid and provided with connexions 1, for the passage of the gas to be tested. The actuating liquid, as it rises, first seals the lower ends of the limbs, entrapping a sample of gas, which is then forced through an upstanding pipe 9 into the bell C; the bell is weighted, is supported on a perforated cap C<2>, and is provided with wire gauze, laminµ, &c. C<3> to increase the absorption surface. Unabsorbed gas collects under the bell, and a corresponding volume of liquid is forced into the recording-device D in which a guided float 19 indicates the proportion of gas absorbed. On the complete discharge of the sample from the chamber A, the liquid in the reservoir F is depressed to such an extent as to unseal the end of a pipe 24 connected to a vertical stand-pipe 26; the actuating gas then escapes through this pipe, and further rise of liquid ceases. On release of the gas pressure, the liquid returns to the reservoir.
Patent GB-224610-A (GB)
Title: Improvements in gas fired oven furnaces
IPC: F23C99/00
Filed: 1923-08-17
Abstract: 224,610. Lucas, E. E. Aug. 17, 1923. Addition to 164,833 and 215,951. Muffle furnaces; discharging; observation devices.-The furnace described in the parent Specification is modified by interposing between the discharge end and the quenohing-tank 6 a cooling-chamber 4, which is at least of substantially the same length as the heating-chamber. An inspection door 9 with a mica window, and dampers 7, 8 for isolating the cooling-chamber from the heating-chamber and the quenching-tank respeotively, may be provided. The cooling-chamber may be of circular, square, or D-section, or it may be in the form of a box of some width and depth.
Patent GB-1344367-A (GB)
Title: Automatic telephone answering apparatus
IPC: H04M1/65
Filed: 1971-04-19
Abstract: 1344367 Telephone answering machines PIONEER ELECTRONIC CORP 19 April 1971 [3 Feb 1970] 20947/71 Heading H4K A telephone answering machine includes two timing circuits, one responsive to the presence of a message signal arid the second responsive to absence of the message signal and resettable on receipt of the message signal where the machine is returned to a standby condition when the time set on either circuit expires. The circuit shown includes a relay Y1 which is energized when a ringing current is detected and relay Y2 operates. This causes tape loop T1 to run and reproduce the answering message. At the end of the message, contacts P1 are bridged by a foil on the tape to produce a "beep" tone from oscillator 6 and operate relay Y4. The recording tape T2 is now run and the callers message can be recorded after amplification at 4. During the message the amplifier output is detected at 5. and operates relay Y3 through transistor Tr1 which closes relay contacts y31, y32. Contact y31 connects capacitor C4 to resistor R1 so that the capacitor discharges until the voltage is such that transistor Tr2 conducts thereby making transistor Tr3 non-conductive and thus relay Y1 drops to return the machine to the standby condition shown. During periods of silence relay Y3 is not operated and relay contact y32 is as shown so that the voltage on the base of transistor Tr4 will rise due to the action of the timing circuit 8 comprising resistor R4 and capacitor C5. If no further message signals are received during the timing period transistor Tr4 will conduct switching off the transistor Tr3 to drop relay Y1 as before. If further message signals are received before the expiry of the timing period contact y32 will earth the base of the transistor Tr4 thus resetting the timer 8.