baber/WOPTO huggingface dataset:
Patent GB-929199-A (GB)
Title: Electric power supply plant, in particular for an air conditioner in a railway coach
IPC: H02P9/30
Filed: 1961-10-20
Abstract: 929,199. Automatic control systems. BETEILIGUNGSUND PATENTVERWALTUNGS G.m.b.H. Oct. 20, 1961 [Oct. 22, 1960; July 26, 1961], No. 37741/61. Class 38 (4). In an A.C. generator 2 which may be driven at a variable speed and which supplies a load 4, e.g. an induction motor for an air-conditioning plant in a railway coach, the exciting current flowing through the field winding 7 is arranged to be increased when the terminal voltage drops because of variation in the load, the arrangement being such that variations in voltage due only to speed variations do not affect the field current. As shown, the terminal voltage of the generator 2 feeds a circuit including a reactor 5 and a rectifier 6. The reactor 5 has an inductance which remains substantially constant over a wide frequency range, and it is shown that the current flowing through 5, 6 is independent of the frequency whilst the effective field flux remains constant. The voltage across the rectifier 6 is applied to a resistor 18 in opposition to a constant voltage derived from a battery 8 feeding the winding 7. When the load 4 is connected in, the effective generator field flux is reduced and the current flowing through 5, 6 is reduced, so that the effective voltage applied to the field winding 7 is increased. The generator excitation is thus increased, and the terminal voltage rises to a value which, at the particular frequency, corresponds to the noload value. Variation in the frequency without a variation in the load remains without any influence on the current flowing through the regulator. The difference voltage may be amplified (Fig. 2, not shown) before being applied to the winding 7. The circuit may include transistors or controlled rectifiers and Zener diodes, and examples of such arrangements are given (Figs. 3 to 6, not shown).
Patent GB-975498-A (GB)
Title: Halopropane production
IPC: C07C17/20
Filed: 1963-09-25
Abstract: 2,2-Difluoropropane is made by subjecting gaseous 2,2-chlorofluoropropane to the action of gaseous substantially anhydrous hydrogen fluoride at a temperature of 100-400 DEG C. in the presence of activated carbon as catalyst.  The reaction may take place at substantially atmospheric pressure.  Preferably a mixture of the gases in a mol ratio of hydrogen fluoride to chlorofluoropropane between 3:1 and 1:1 is fed into an elongated tubular reactor made of inert material such as nickel or alloys thereof, or steel lined with graphite or fused alumina, the reactor being packed with activated carbon of average mesh size between 1/25 and 1/4 of the reactor diameter and enveloped in an electric furnace. Detailed examples are given.
Patent GB-1452657-A (GB)
Title: Water faucets
Inventor: PERSSON B-A
IPC: E03C1/042
Filed: 1974-08-29
Abstract: 1452657 Valves B A INSTALLATIONSUTVECKLING AB 29 Aug 1974 [31 Aug 1973 16 Aug 1974] 37886/74 Heading F2V A water faucet with an elongate pipe-shaped body adapted for mounting in an exterior wall has a valve control shaft 14 extending inside the flow pipe connecting a oontrol knob 2 and a clousure member 12 which closure member with its valve seat 10 is situated in the wall, when mounted, or at the other end of the body from the control knob. The location of the closure member and seat away from the control knob (i.e. towards the inside of the wall) is to prevent freezing. The body is held in the wall by a nut 7 engaging a threaded portion 8 of the pipe or alternatively a portion adjacent the seat is exteriorly threaded and engaged by a cylinder with an interior thread at one end and a a flange at the other. A space is left between the pipe and the cylinder to allow heat to the seat.
Patent GB-624927-A (GB)
Title: Improvements relating to controlling means for variable speed pulleys of the conical disc type
IPC: F16H61/662
Filed: 1946-12-31
Abstract: 624,927. Controlling variable-speed gear. ASQUITH, Ltd., W., and JOHNSON, A. Dec. 31, 1946. No. 38081. [Class 80 (ii)] A lever or press button controlled self centralizing reversing gear moves a chain or similar member to adjust the ratio of an expanding pulley gear, and has an automatic trip to prevent excess movement in either direction and to return the device to a neutral position. In the gearing described in Specification 617,940 a motor A4 drives the rubber faced cone A positioned between two other discs B fixed to a reversing member C splined to the shaft F. The reversing member C is moved by a roller H against the centralizing action of the two-springs DD, carried on a lever H<2> moved through the linkwork H<5>, H7, J by a cam H6 which operates a switch for the motor A<4>. Operation of the cam A<6> in one direction or the other causes rotation of the shaft F and, through worm gears F2, F3 rotation of the sprocket G to effect a ratio change. The worm N<1> drives a worm wheel N carrying two projecting tappets M, M<1> which contact a tappet L on a lever L', fixed to the lever J, to centralise the member C when the expanding wheel gearing is at either limiting position. A jockey sprocket U is provided to enable the belt tension to be adjusted by slackening the chain K and moving the cones axially as described in Specification 617,940.
Patent GB-373207-A (GB)
Title: Improvements in and relating to the production of sterilised air
IPC: A61L2/20
Filed: 1930-12-18
Abstract: Sterilized breathable air is obtained by treating the air with a quantity of gaseous or vaporous germicidal agent adding the calculated proportion of a substance which will neutralize the deleterious effects of the germicidal agent and then removing any excess of the neutralizing agent, e.g. by passing the air through a solvent.  For example if formaldehyde is used to sterilize the air, ammonia in calculated quantity is added and the air may then be passed through water or a solution of tartaric, sulphuric or oxalic acid.  Alternatively air treated with formaldehyde may be passed through a series of containers the first of which contains ammonia, and the others water and a solution of tartaric acid. Treatment with ozone followed by hydrogen peroxide is also suitable.  A chamber filled with air so treated may be entered by an operator and biological, surgical and commercial operations may be carried out therein.  Specification 4455/05, [Class 81, Medicine &c.], is referred to.
Patent GB-794806-A (GB)
Title: Improvements in or relating to the surface treatment of clutch discs
IPC: C23C8/00
Filed: 1956-12-14
Abstract: Steel friction discs, particularly clutch discs are hardened after the mechanical finishing of the disc, especially by agents which liberate nitrogen, for example in a a cyanide bath or by the carbon nitriding process.  The treatment is then completed by quenching the discs in a salt bath such as a melt of sodium nitrate and potassium nitrate to produce an oxide layer.
Patent GB-385724-A (GB)
Abstract: 385,724. Soot-blowers. KUBALEK, O., Milnthorpe Green, Sandal, Wakefield, Yorkshire. Dec. 7, 1931, Nos. 33868 and 34841. [Class 99 (ii).] An automatic soot-blowing apparatus for use with steam boilers, economizers, airheaters, &c., comprises a valve 7 normally engaging a seating 6 to close a passage 2a leading to the blower, steam, which enters by a port 4 in a casing 1 containing the valve, passing through a restricted passage 8 in the valve to the back thereof where a pipe 9, of greater diameter than the passage 8, leads it to a steam trap 10 ; by this arrangement, when the trap 10 discharges water which has accumulated through condensation of steam in the pipe 9 the pressure in the pipe 9 is reduced and the valve 7, which is formed as a piston sliding in an apertured sleeve 5, rises to allow steam to pass to the blower. As steam filters through the passage 8 to the pipe 9, pressure is restored and the valve 7 closes again. A cock 14 may control the time taken by the trap to empty and consequently the period for which the blower operates. A casing 11 formed at its upper end with apertures 11a surrounds a vertical portion of the pipe 9 and by rotation of an apertured cover 12, which opens or closes the apertures, the degree of cooling exercised by the pipe can be controlled and thereby the intervals between successive operations of the blower.
Patent GB-876243-A (GB)
Title: Improvements in or relating to tooth-brush glasses
IPC: A47G19/22
Filed: 1957-12-11
Abstract: 876,243. Drinking vessels. MACON, R. E. Dec. 11, 1957, No. 38572/57. Class 66. A tooth-brush glass consists of a glass 1 having a recess 3 for receiving a toothbrush 7, said recess 3 being defined from the closed to the open thereof as being substantially the reverse of the direction from the closed to the open end of the glass and also being provided with drain holes 12. A number of preferred embodiments are described.
Patent GB-1099099-A (GB)
Title: Print head and printing apparatus incorporating the print head
IPC: B41J1/60
Filed: 1966-08-31
Abstract: 1,099,099. Typewriters. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 31, 1966 [Oct. 6, 1965], No. 38737/66. Heading B6F. A truncated sphere type head 1, Fig. 1, is quickly released from its driving shaft 35, Fig. 6, by spreading apart the limbs of a spring 7 to disengage them from an annular recess at the end of the shaft. The spring 7 is mounted on two pins 9<SP>1</SP>, 911 on the truncated surface of the type head and the limbs are in constant engagement with cam surfaces 31<SP>1</SP>, 31<SP>11</SP> inclined to the rotational axis of cam 19 whose stub-shafts 18<SP>1</SP>, 1811 are journalled in recesses 17<SP>1</SP>, 17<SP>11</SP> of a cap 5 attached firmly to the type head by means of studs 11<SP>1</SP>, 11<SP>11</SP>, 11<SP>111</SP> which are thermally deformed on the underside of the truncated surface of the type head. Cam 19 is operated by a handle 21, moulded around a knurled, intermediate portion 33 (Fig. 4) of the cam 19, which is pivotal through an angle of 120 degrees to engage or disengage the spring limbs with or from the annular recesses at the end of the shaft 35.
Patent GB-1077622-A (GB)
Title: Rotary coin holder mechanisms
Inventor: CHARLES JOHN ARTHUR
IPC: G07F15/02
Filed: 1962-10-15
Abstract: 1,077,622. Prepayment meters. UNITED GAS INDUSTRIES Ltd. Jan. 14, 1964 [Oct. 15, 1962], No. 38901/62. Heading G4V. The coin holder of a prepayment meter having a carrier disc 4 mounted on a price change plate 1, comprises spaced parallel plates 6 and 8 between which a cord is injected to rest on a deflectable bottom member 10 and deflect a bar mounted on pivoted arms 20, 21. Deflection of the bar causes the arms 20, 21, which lie outside the holder, to deflect the longer arms 11, 12 pivoted at 13 and carrying a bar 14 across their free ends. The bar 14 engages cam tracks 15, 16 in two strikers 17 and 18 so that according to which of two coins is injected one or other striker is put into action. The deflectable bottom member 10 is held in position by a spring 32 and has a projection 29 to engage a stop member when the carriage is rotated to its full extent, the bottom being deflected in this position to discharge the coin. A lever 34 pivoted at 35 and biased by a spring has a bent-over head portion which lies across the coin slot to rise up over inserted coins and fall back behind them.
Patent GB-972843-A (GB)
Title: Improvements in or relating to electric logical circuits
Inventor: CLARKE RAYMOND WILLIAM
IPC: G06F7/50
Filed: 1961-10-31
Abstract: 972, 843. Electronic binary half adders. MULLARD Ltd. Aug. 14, 1962 [Oct. 31, 1961; Dec.11, 1961],Nos.38911/61 and 44234/61. Heading G4A. [Also in Division H3] The "exclusive OR" circuit of Specification 887,933, is modified by the addition of a pair of catching diodes D1, D2 as described in Specification 970,549 and is combined with an AND circuit to form a half adder of the type described in Specification 895,909. The catching diodes permit faster operation and also provide additional current paths in parallel with the AND circuit T3, T4 so that the carry output may be reduced from two units to a more convenient value, adjustment of the value being made by means of resistors R5, R6. The D.C. potential to which the diodes are connected may be either a potential + V d  as shown, Fig. 2, or may be earthed, Fig. 1 (not shown).
Patent GB-851717-A (GB)
Title: Improvements in or relating to root crop harvesting machines
IPC: A01D27/00
Filed: 1956-12-21
Abstract: 851,717. Harvesting beets. STOLL, W. Dec. 21, 1956 [Dec. 27, 1955 ; Jan. 21, 1956; Sept. 5, 1956], No. 39098/56. Class 6(3). In a beet-harvester, the beets are topped by a topping knife 1 having a grid 42 at the rear, surmounted by a set of flexible rotary beaters 13, 16 which strip off any remaining leaves. As shown in Fig. 1, the fixed topping blade 1 is followed by a transverse top-conveyer delivering to a container (not shown). The beaters are mounted on hubs 14 on an axle 17, the foremost beater being driven by pulleys 21, 22 from the conveyer 3 and driving the second beater in the opposite direction through bevel gears 18, 19, 20. The beet-lifting tool 5, operates on an already-topped row and feed the crop via a spinner 6 to a receptacle (not shown). In Fig. 5, the beaters 30, 31 32, 33 are mutually perpendicular and at 45 degrees to the line of travel, driving each other through bevel-gearing 34. The lifting tools 5 and spinner 6 follow the beaters directly. As shown in Fig. 14, the beaters may also operate in a nearly horizontal plane and comprise a disc 47 with pendant rubber strips 15. Alternatively, Fig. 16, the beater may comprise a hub 51 with discs 52 which carry integral clips 54 each beater-member being a doubled length of rubber strip 73, 74 inserted in the clip and retained therein by bolts 76 and split-pins 67, which do not pass through the strip but clamp the cheeks of the clip together.
Patent GB-1036337-A (GB)
Title: Improvements in explosive charges
IPC: F42B1/028
Filed: 1963-10-04
Abstract: 1,036,337. Hollow-charge projectiles. L. BOLKOW, [trading as BOLKOW-ENTWICKLUNGEN KOMM.-GES.], and F. R. THOMANEK. Oct. 4, 1963 [Oct. 4, 1962], No. 39187/63. Heading F3A. A shaped charge 1 has a conical cavity 3 at one end fitted with a metal liner 2, e.g. carbon - free iron, the height H of the cavity being 10-30% of the maximum diameter and the thickness s of the liner being 5-10% of the said diameter. The liner may decrease in thickness towards the apex or may be made in two parts, Fig. 3 (not shown), the outer part being a ring (7) of lower specific gravity, e.g. aluminium, than the main part (8). The cavity may be partspherical, the liner being shaped to correspond. In Fig. 5 (not shown) an elongated charge 10 has a plurality of cavities, each fitted with a liner, along opposite sides. These liners may be right-circular cones or oblique cones.
Patent GB-1196276-A (GB)
Title: Improvements in or relating to Mould Assemblies for use in a Shoemaking Operation
IPC: B29C33/12
Filed: 1967-08-29
Abstract: 1,196,276. Boots, &c. BRITISH UNITED SHOE MACHINERY CO. Ltd. 29 Aug., 1967 [30 Aug., 1966], No. 39423/67. Heading A3B. [Also in Divisions B4 and B5] A premoulded rubber or a leather tread surface i is moulded on to a lasted upper u (see Divisions B4 and B5) by the injection of an intermediate layer of p.v.c. The colour of the tread i may differ from that of the p.v.c. The p.v.c. is injected directly into the mould cavity through sprue passages in side mould members whereby a sprue opening through the base mould member and tread surface i is avoided.
Patent GB-887779-A (GB)
Title: Polymerization of unsaturated hydrocarbons
IPC: C08F36/04
Filed: 1959-11-23
Abstract: A method for the separation for re-use of fractions comprising the components of the mixture of unreacted reactants and volatile diluent recovered from the process of preparation of polymers of isoolefins wherein the reactants while dispersed in a non-reactive, non-complex-forming, volatile diluent are contacted with a Friedel-Crafts catalyst in a reaction zone maintained at a temperature between +40 DEG C. and -164 DEG C., to effect incomplete conversion thereof, comprises feeding the recovered mixture to a fractionating system comprising a series of distillation towers, in the first distillation tower separating for re-use in the polymerization reaction a distillate comprising a high purity fraction of the inert diluent from undistilled residue of the mixture which is distilled in a second tower, the quantity of the isoolefin in the feed to the second tower being maintained at a predetermined minimum quantity by the addition of isoolefin to the feed, to obtain a distillate for re-use comprising most of the remaining portion of the volatile diluent, a major proportion of the isoolefin, close boiling normal olefins usually associated with the isoolefin, the bottoms fraction from the second tower, comprising the rest of the volatile diluent, isoolefin, close boiling normal olefins usually associated with the isoolefins and other reactants being subjected to further recovery treatment by distillation.  The bottoms fraction from the second tower may be sent to a third tower in which substantially all the remaining inert diluent and small amounts of isoolefin and close boiling normal olefins are removed overhead and recycled to the second tower for further recovery, and the bottoms fraction from the third tower, containing isoolefin, close boiling normal olefin and other reactant sent to a fourth tower where essentially all the remaining isoolefin and close boiling normal olefins are removed as an overhead product stream, the bottoms fraction from the fourth tower comprising other reactant and higher boiling hydrocarbons.  Apparatus suitable for carrying out the process of the invention is described and illustrated, and the process of the invention is described with reference to the copolymerization of isobutylene and isoprene in methyl chloride in the presence of aluminium chloride, but may be applied to similar reactions, e.g. the copolymerization of 2-methyl pentene-1 and hexadiene-2,4.
Patent GB-397308-A (GB)
Abstract: 397,308. Lighting burners. RABINOWICZ, M., 20, Taborstrasse, Vienna. Sept. 12, 1932, No. 25383. Convention date, Dec. 21, 1931. [Class 75 (iii).] Means for igniting a burner 2 of a gas stove or the like comprises a pilot jet 20 adapted to be ignited by a frictional device 10, 11 on opening the gas cock 4, a cover plate 22 being provided for protecting the pilot jet and ignition device from overflowing liquids. The handle of the cock is constructed as a disc 18 provided on the underside with a projection 19 for engaging a pivoted spring - controlled lever 7 carrying the friction member 10. On opening the cock, the projection 19 moves the lever until the latter is released and returned by the spring 14 thereby rubbing the member 10 over the flint 11 for igniting the pilot jet. The arm 17 of the lever 7 is resilient to allow for re-engagement with the projection 19 on closing the cock.
Patent GB-1139813-A (GB)
Title: New surface active agents, and their preparation and uses
Inventor: KALOPISSIS GREGOIRE
IPC: C11D1/00
Filed: 1966-09-06
Abstract: 1,139,813. Amide derivatives. L'OREAL. 6 Sept., 1966 [6 Sept., 1965], No. 39846/66. Heading C2C. [Also in Divisions C5 and D1] Compounds of the formula wherein A represents a nitrogenous tertiary base which is either an aliphatic tertiary amino grouping of the formula wherein R 1  is an alkyl or alkenyl radical comprising 1 to 18 carbon atoms, and R 2  and R 3 , which may be the same or different, each represent an alkyl or hydroxyalkyl radical comprising 1 to 3 carbon atoms, or a heterocyclic nitrogenous tertiary base grouping, n represents 2 or 3, B represents either the grouping or the grouping wherein R 4  represents an alkyl or alkenyl radical comprising 1 to 18 carbon atoms, or a hydroxyalkyl radical comprising 2 or 3 carbon atoms, R 5  represents either a hydrogen atom or an alkyl radical comprising 1 to 3 carbon atoms, M represents an alkali metal and X represents an anion, may be obtained by aminolysing a betaine ester of the formula wherein Y is a lower (C 1-4 ) alkyl group, with an alkylene diamine of the formula and reacting the product of formula with an alkali metal salt or a lower (C 1-4 ) ester of a monohalogenated acetic acid and, when said ester is used, hydrolysing the ester grouping.
Patent GB-907806-A (GB)
Title: Limitation of thermal shock in gas turbine engine components
Inventor: FITCHIE JOHN WILLIAM
IPC: F02K3/00
Filed: 1958-12-11
Abstract: 907,806. Automatic control of gas turbines. POWER JETS (RESEARCH & DEVELOPMENT) Ltd. Dec. 11, 1959 [Dec. 11, 1958], No. 39961/58. Class 38 (4). [Also in Group XXIX] In a gas turbine engine, thermal shock to engine components subjected to temperature variations due to reduction in fuel supply is limited by reducing the rate at which the engine component is cooled, consequent upon an attempt to reduce suddenly the rate of fuel supply, by automatically imposing a limit on the rate of reduction of the fuel supply. As shown, for a gas turbine 1 the fuel flow to burners 15 through a swash-plate pump 13 from a tank 11 is controlled by a system as disclosed in Specification 896,293 comprising a valve 21 controlling through conduits 31, 32 the position of a valve 13d varying the delivery from the pump. The valve 21 has a piston 28 positioned by an electrical actuator 40 energized in dependence on the desired engine speed as set by a rheostat 45, positioned by a throttle 46, and the output from a tachometer 42. An actuator 50, responsive to jet-pipe temperature, overrides the actuator 40 at a maximum permitted temperature. Thermal shock stresses which occur when the throttle is rapidly moved to reduce the fuel supply are limited by a system comprising an hydraulic cylinder 61 containing a piston 62 which is displaced by the throttle 46. Movement of the piston 62 displaces a piston 74 against the action of a spring 78 to close a switch 81 and energize a solenoid 83. The solenoid 83 positions a piston of a valve 85 in the conduit 32 so that a restriction 44 limits the rate at which the valve 13d can vary the fuel flow from the pump 13. The pressure across the piston 62 is limited by flap valves to permit continued movement of the throttle 46 and a bleed 71 determines the rate at which the piston 74 moves under the action of the spring 78 to open switch 81. A relay 89 responsive to a thermocouple 87 at the turbine inlet isolates the switch 81 below a predetermined temperature at which thermal shock stresses are likely to be significant. It is stated that the system may be modified by introducing the required lag into the operation of the actuator 40, by using an hydraulic link between piston 74 and valve 85. For a pump delivering at constant rate a spill valve can be controlled.
Patent GB-1152347-A (GB)
Title: Cascode Transistor Amplifier
IPC: H03G3/30
Filed: 1966-09-07
Abstract: 1,152,347. Automatic gain control circuits. MOTOROLA Inc. 7 Sept., 1966 [24 Oct., 1965], No. 40015/66. Heading H3T. An I.F. amplifier with automatic gain control comprises a cascade circuit formed by input and output transistors 24, 42, respectively, and an auxiliary transistor 32, the emitter of which is connected to that of output transistor 42. Transistors 32, 42 form an emitter coupled pair, the gain being varied by application of the controlling voltage to the base of transistor 32 via terminal 55 and a potentiometer comprising resistors 53, 50. The arrangement is such that the collector current of input transistor 24 remains uncharged, so that the input impedance is unaffected by the gain control. According to the invention a semi-conductor diode 21 having P and N regions with conductivity characteristics substantially identical to the conductivity of the P and N regions of the emitter and base respectively of the input transistor 24 has its P and N regions connected in parallel with the P and N regions of the transistor, being used to provide base bias for the transistor in conjunction with resistors 35, 56 and 48. The Specification also describes and illustrates (Fig. 2, not shown) an integrated arrangement embodying the circuit.