baber/WOPTO huggingface dataset:
Patent GB-597489-A (GB)
Title: Improvements relating to switches for fluorescent and luminous gas electric discharge tubes
IPC: F21V23/04
Filed: 1945-08-21
Abstract: 597,489. Switches held set and freed mechanically; switch covers. WALLIKER, G. S. Aug. 21, 1945, No. 21379. [Class 38(v)] The circuit of an electric lamp b of the fluorescent or luminous gas discharge type is automatically made when the cover d is secured in position, and is broken when the cover is removed. A screw e on the cover screws into a sleeve f on the lamps mounting panel g and forces the contact-carrying bar h upwards by means of a spring in sleeve f, thereby making contacts i. A press-button switch may also be included in the lamp circuit.
Patent GB-584413-A (GB)
Title: Improvements in or relating to suction cleaners
IPC: A47L5/34
Filed: 1944-11-02
Abstract: 584,413. Suction cleaners. HOOVER, Ltd. (Hoover Co.). Nov. 2, 1944, No. 21447. [Class 8 (i)] In a semi-automatic nozzle height adjusting means of the type in which whatever the initial nozzle height adjustment is effected by given movements, the height at which the nozzle is adjusted is determined by a feeler which is lowered during the. adjusting operation so as to rest lightly on the carpet to gauge the level of its surface and is then withdrawn when the adjustment is complete. The feeler E, Fig. 1, carried by a fixed pivot E<4> comprises an operating surface E<1> which abuts a wheel carrying cranked axle C', a surface E<2> and a toothed sector E'. Also pivoted at E<4> is, an upwardly biassed operating lever F having a pedal F' and carrying a pawl G pivoted at F' and urged by a spring G<1> into engagement with the ratchet E<3>. A cam surface G<2> on the pawl G slides in contact with a fixed pin H. On pressing the pedal F<1> and drawing the pawl downwards to release the feeler E the surface E<2> thereof makes contact with the carpet and allows the nozzle to assume its adjusted position. On releasing the pedal the cam surface G<2> allows the pawl to re-engage the ratchet in the appropriate tooth and withdraws the feeler clear of the carpet. A pin O and slot P define the limits of nozzle height adjustment In a modification an upwardly urged cranked axle C<1>, Fig. 8 is engaged by one of a series of depressions M<3> of a cam plate pivoted at M<2>. Also pivoted at M<2> is a feeler plate N urged downwards by a spring N<4> where an operating member disengages the axle C<1> from the cam M. In its released position the member bears against a lip N' on the feeler and holds the latter in its inoperative position. In a further modification, Fig. 4, the adjusting mechanism is applied to the rear wheels B which are carried by a bracket J pivoted at J<1> and urged downwards by a spring J<2>. A feeler pivoted at K<2> and carrying a surface K<3> and a ratchet K<4> is released from a pawl L by a plate J<4> on pressing the cleaner downwards against the opening J<2>. As the casing is released the pawl engages an appropriate tooth K<4> to withdraw the feeler from the floor. Specifications 494,265 and 506,513 are referred to.
Patent GB-217804-A (GB)
Title: Improvements in or relating to heel-protectors for boots and shoes
IPC: A43B21/40
Filed: 1923-08-24
Abstract: 217,804. Riley, T., and Wilding, H. C. Aug. 24, 1923. Protectors, securing.-A detachable heel-pad d has on its upper face a raised portion of tapered configuration with undercut sides adapted to engage a corresponding channel in the fixed part of the heel. The pad is secured by a spring plate h provided with a tongue or tongues h<1> adapted to snap into a recess in the base of the heel channel or in a slot e in a base-plate b<1> as the pad is slid into place. The plate h has a finger-piece h<2> for releasing the tongue when desired.
Patent GB-1344534-A (GB)
Title: Polyphase power converter circuits
IPC: H02M5/22
Filed: 1971-04-19
Abstract: 1344534 Converting GENERAL ELECTRIC CO 19 April 1971 [12 Feb 1970] 21483/71 Heading H2F A circuit for changing the voltage of a polyphase power frequency supply ABC by means of a high frequency single phase transformer 18 comprises a solid state switching device A1 ... C2 between each phase ABC and the transformer primary 18p and further solid state switching devices A<SP>1</SP>1 ... C<SP>1</SP>2 between the secondary 18s and output terminals A<SP>1</SP>B<SP>1</SP>C<SP>1</SP>. The switching devices are operated sequentially at a high frequency so that the power frequency input is converted into a series of high frequency pulses capable of being passed via transformer 18. As described three-phase power at 50- 400Hz applied to terminals ABC is chopped into 10 kHz pulses by sequential triggering of thyristors A1 ... C2; the pulses from the respective phases being arranged to occur at different times. The pulses induced in -the secondary 18s are distributed to three output lines A<SP>1</SP>B<SP>1</SP>C<SP>1</SP> by sequential triggering of thyristors A<SP>1</SP>1 ... C<SP>1</SP>2, the pulses being reformed into sine waves by means of capacitors 23 ... 25. Each pulse consists of a half-cycle at the resonant frequency of series circuits 32, 35 &c, which provide commutation for the input thryistors. The output thyristors may be commutated by a common capacitor 45. Rectifying.-In Fig. 5, power from a threephase system ABC having a neutral point 17 is converted into half cycle pulses at 10 kHz by sequential triggering of thyristors A1 ... C2 and fed to the primary 18p of a high frequency transformer which changes the voltage. The output is rectified by a diode bridge 50 ... 53. In Fig. 7 (not shown) each diode is replaced by an anti-parallel pair of thyristors arranged to be selectively triggered so as to determine the polarity of the D.C. across the load 55. Modifications.-Gate-turn-off devices may be employed. Each anti-parallel pair of thyristors may be replaced by a triac or by a transistor connected across a diagonal of a diode bridge.
Patent GB-1040745-A (GB)
Title: Improvements in or relating to electric motor controllers in electrically powered vehicles
Inventor: DOLPHIN JOHN ROBERT VERNON
IPC: B60K1/02
Filed: 1962-06-04
Abstract: 1,040,745. Controllers; control of D.C. motors. LANSING BAGNALL Ltd. June 4, 1963 [June 4, 1962], No. 21519/62. Headings H2B and H2J. A battery driven truck has a motor controller comprising a carbon-pile variable resistor in series with the motor shunt field windings, an operator control, e.g. comprising an accelerator pedal 21 movable to vary the force on a spring washer 51 which bears on the carbon pile RV, to relieve pressure on the pile and an electromagnet 53 connected in the motor circuit in series with the motor armature to increase the pressure on the pile whenever the series current rises. The electromagnet 53 has two windings RVSW and RVShW which increase the pressure on the pile when the armature current is high and normally maintain pressure on the pile, respectively, by attracting armature 32 which is connected by a shoulder 52 to a rod 46 passing through the carbon discs RV and communicating with the spring washer 51. Depression of accelerator pedal 21 causes a cam 59 to move a push-rod 55 acting via a spring 57 on the armature 32 such that the force of winding RVShW is overcome and the pressure on the pile RV by spring washer 51 relieved. The cam 59 successively operates microswitches MS1, MS2, MS3 as the pedal 21 is gradually depressed to operate relays to vary the motor circuit (see Provisional drawing, not shown). A fluid dashpot 65 prevents excessively rapid movement of the cam. The truck operator closes a seat switch 55 (see Provisional drawing, not shown), a key switch KS and a hand brake switch HBS before depression of the accelerator pedal operates microswitch MS1 to start up the two motors, by energizing armatures 1 and 2, and to extinguish an indicator lamp 70. The direction of rotation of the rotors is dependent on the position of the reversing switch REVS. Operation of microswitch MS2 shorts out the starting resistor R1 and operation of microswitch MS3 switches the motor armatures into parallel. The carbon pile resistor ensures smooth acceleration as pedal 21 is depressed. The truck is braked rheostatically. In extreme load conditions the large armature current energizes winding ShFRC and operates switches ShFR in the field circuit to switch the field windings ShF1 and ShF2 into parallel to cope with the extreme load.
Patent GB-614607-A (GB)
Title: Improved device for detecting the transmission of high-frequency electrical energy through a conductor
IPC: H03D1/10
Filed: 1946-07-18
Abstract: 614,607. Current indicators; power measurements. PHILIPS LAMPS, Ltd. July 18, 1946, No. 21532. Convention date, Aug. 5, 1942. [Class 37] The transmission of high-frequency electrical energy through a conductor in which standing waves appear, is detected and indicated on an instrument controlled by two voltages, one dependent on the current appearing at any point of the conductor and the other dependent on the H.F. voltage appearing at or near the same point in the conductor. As shown, the conductor 1, connected in a radio transmitter antenna circuit where standing waves appear, is surrounded by a coil 3 which by transformer action develops a voltage proportional to the H.F. current in the surrounded part of conductor 1. A capacitor-potentiometer C1, C2 formed by condenser plates 5, 6'supported by an insulator 4 concentric with the conductor 1 develops a voltage across C2 proportional to the voltage prevailing in the same part of conductor 1, or a part thereof axially distant less than a quarter-wavelength. The two voltages are rectified at 7, 8 respectively, smoothed at 9 and applied in the same sense to a direct-current meter 10 which indicates the power transmitted. The meter is made as independent as possible of frequency so that it may be used over a wide frequency band by (1) tuning the winding 3 by a condenser 12 to the geometrical mean frequency of the band, and connecting a damping resistance 13 across the tuned circuit, or by providing a plurality of series-connected secondary windings 3 individually tuned to different frequencies in the band, and (2) keeping the value of resistor 11, which completes the circuit of rectifier 8, such that it does not affect the frequency-independance of the capacitative potentiometer C1, C2. The circuit elements 7, 8.... 13 are housed within an insulating envelope 14, 15, 16, the whole circuit arrangement thus forming a lead-through device. In a modification, Fig. 3 (not shown), the rectifiers 7, 8 feed the meter 10 through respective series resistances in order still further to render the operation independent of frequency, and a range-changing resistor may be switched into the meter circuit.
Patent GB-668147-A (GB)
Title: Improvements in the production of porous shaped articles
IPC: B22F3/11
Filed: 1950-09-01
Abstract: 668,147. Powder metallurgy. BADISCHE ANILIN- & SODA-FABRIK. Sept. 1, 1950 [Sept. 10, 1949], No. 21599/50. Class 83 (iv). In a method of making porous metal articles, more particularly porous electrodes for alkaline accumulators, sintering magnetizable finelydivided metals or metal oxides, the powder is subjected to the action of a magnetic field before or during the sintering operation. In an example, a flat mould of sheet chromiumnickel 18 mms. high is filled to a height of 10 mms. with a fine nickel powder which is covered with a chromium-nickel sheet. The mould is brought into a vertical magnetic field which causes the powder mass'to extend in the direction of the field, thereby raising the cover. This loosening of the powder remains to a considerable extent after removing it from the magnetic field and sintering is then carried out for one and a half hours at 950‹ C. The method may be applied to mixtures of magnetizable and non-magnetizable powders.
Patent GB-717637-A (GB)
Title: Improvements in or relating to forced through-flow steam boilers
Inventor: MICHEL RUPPRECHT
IPC: F22B3/04
Filed: 1952-08-28
Abstract: 717,637. Forced - circulation steam boilers. SIEMENS-SCHUCKERTWERKE AKT.-GES. Aug. 28, 1952, No. 21683/52. (Class 123(2) A forced-circulation steam boiler,. adapted to operate at least at critical pressure and to be fed with water practically free from salt, has its steam-generating surface so disposed as to be subjected to radiant heat, and the usual superheater is constructed to ensure that the final steam temperature reaches or exceeds approximately 600‹C.
Patent GB-1484652-A (GB)
Title: Plasma spraying
IPC: B05D1/08
Filed: 1975-05-21
Abstract: 1484652 Plasma spraying tungsten carbide particles METCO INC 21 May 1975 [30 May 1974] 21722/75 Headings B2E and B2F [Also in Divisions C7 and H5] A plasma spraying process comprises passing a gas at at least 90 m/s through nozzle 6 of gun 2, striking and maintaining an arc of at least 15 kilowatts between an electrode 4 and the exit rim 10 of nozzle 6, maintaining a gas back pressure of at least 1 atmosphere gauge within the nozzle, maintaining a plasma gas enthalpy of at least 7,000 joules per standard litre at the exit of the nozzle, and feeding a powder into the resultant plasma gas from powder feeder 45. The gas is a combination which may include hydrogen, helium, nitrogen or argon, the flow rate being from 0.70 to 4.00 litres/sec. at a velocity from 90 to 300 m/s. The power of the arc is from 15 to 80 killowatts at a temperature from 9,000 to 17,000C providing gas enthalpies between 7000 and 16,000 joules/standard litre. The gas back pressure is preferably from 3.3 to 7.0 atmospheres gauge. The powder feeder 45 delivers from 1 to 7 kgs/hour of powder including: tungsten carbide with 12% cobalt, cobalt alloy, aluminium oxide, molybdenum, chromium carbide/nickel alloy blend, titanium oxide/aluminium oxide composite, and nickelchromium alloy. The plasma spraying gun 2 for carrying out the above described process, comprises a cathode 4 with a tip 5, a nozzle 6 having a bore 8 and the exit rim 10, and a powder feeder 45, so that when electric cables are connected at points 20 and 22, an arc is struck between tip 5 and rim 10, cooling being provided by water entering through passages 32 and 38 which communicate with passages 30 and 34 and blind holes 39. The nozzle has an internal diameter from 0.318 to 0.476 cm and an internal length from 0.508 to 1.27 cm, the tip 5 being from 1.016 to 2.286 cm from the exit rim 10.
Patent GB-262051-A (GB)
Title: A closing and releasing device for fluids
IPC: F16K15/14
Filed: 1926-09-03
Abstract: 262,051. Schultheis, A. Nov. 25, 1925, [Convention date]. Addition to 242,261. Lift valves; actuating-mechanism.-In a closing device or valve, according to the parent Specification, the strap-shaped member g, Figs. 1 and 2, surrounding the elastic annual member or pad b is provided with means by which it can be displaced relatively to the annular pad without previously pressing the pad inwardly by hand, so that the valve f can be opened to any required extent and held open. In the arrangement shown in Fig. 1 the adjustment takes the form of an eccentric or roller h mounted in a recess in the pad band rotated by a handle k. Moreover, the strap g is removable. In the form shown in Fig. 2 the strap g is fitted with a block or tumbler p having three facets 1, 2, 3 disposed at progressively-increasing distances from the pivot centre q. In the closed position the facet 1 rests in a recess in the pad b, as shown. The tumbler p is turned by the handle o to bring the facets 2 and 3 into contact with the pad b to obtain a progressively-increasing compression of the pad and consequent variable opening of the valve. Modifications are also shown in the which the adjustment device is in the form of a screw operating in the strap g: the strap is made removable bv means of a bayonet slot and pin connection. In each case the valve can be opened directly by hand as in the parent Specification
Patent GB-1206995-A (GB)
Title: Indoline-2-ones
IPC: C07D215/50
Filed: 1968-05-08
Abstract: 1,206,995. Substituted indolin-2-ones. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. 8 May, 1968 [12 May, 1967; 24 April, 1968], No. 21827/68. Heading C2C. The invention comprises indolin-2-ones substituted as follows: (a) 3-(3,4-dichlorobenzyl); (b) 3-benzyl-4-chloro; (c) 3-benzyl-6-trifluoromethyl; (d) 6-amino-3-ethyl; (e) 3-(2-chlorobenzyl); (f)3-(4-chlorobenzyl)-6-trifluoromethyl; (g) 3-benzyl-6-methyl; (h) 1-carboxymethyl-3- (4-chlorobenzyl)-6-methoxy; (i) 3-methyl-6- chloro; (j) 3-benzyl-6-chloro; (k) 3-(4-chlorobenzyl )-6-chloro; (1) 1-benzyl-3-methyl; (m) 1-carboxymethyl-3-(4-chlorobenzyl); (n) 1- carboxymethyl - 3 - benzyl - 6 - methoxy. These compounds are prepared by hydrolysing and decarboxylating the corresponding indolin-2-ones containing an additional 3-CO 2 R substituent (R = alkyl or aralkyl); where the desired products contain a 1-carboxymethyl group, the corresponding 1-alkoxycarbonylmethyl-3-alkoxycarbonyl-indolin-2-ones are used. Starting material.-XEtC(CO 2 Et) 2  (X = 2,4- dinitrophenyl) is prepared from XCl and NaEtC(Co 2 Et) 2 .
Patent GB-490482-A (GB)
Title: Drawing-off device for heilmann combing machines
IPC: D01G19/04
Filed: 1937-08-09
Abstract: 490,482. Combing - machines. SACHSISCHE TEXTILMASCHINENFABRIK VORM. R. HARTMANN AKT.-GES. Aug. 9, 1937, No. 21860. Convention date, Oct. 3, 1936. [Class 120 (i)] In a Heilmann combing- machine the nip of the drawing - off device is brought close to the top comb e by the provision of one or more small rollers h, Figs. 1 and 2, in association with the usual drawing-off devices comprising a pair of rollers or a stationary block f and a driven roller g. The small roller or rollers h are located as shown in longitudinal grooves in the block or web f one of the rollers being located between the vertical axial plane of the roller g and the top comb. In a modification, the member f is placed below the drawing-off roller g, Fig. 3, and an endless belt i arranged around the web f and the rollers h. Where two drawing-off rollers g are provided, Fig. 4, two rollers h are mounted freely at either side of the rollers g and the fibres drawn off between the upper roller g and the belt i. An abutment k is provided to secure the belt i in position. Alternatively two such belts i may be used.
Patent GB-707661-A (GB)
Title: Improvements in and relating to bibs or aprons
IPC: A41B13/10
Filed: 1951-09-19
Abstract: 707,661. Aprons. PLATAROTI, H. T. Sept. 19, 1951, No. 21974/51. Class 141 An apron or bib is provided with an open pocket 5 formed by folding up a lower portion of the apron 4, which is wider than the underlying mid-portion, and inserting a flexible stiffening member in the upper edge 6. The outer edges 9 of the pocket may be sewn to the apron material or buttons and buttonholes may be employed. In a modification, a number of pockets may be provided by securing the lower portion to the mid-portion at points intermediate the marginal edges, each pocket having a separate stiffening member. The pocket or pockets may be provided with an interchangeable lining.
Patent GB-780684-A (GB)
Title: Improvements in or relating to devices for holding doors or the like open
IPC: E05C17/16
Filed: 1955-07-29
Abstract: 780,684. Hinged articles, stays for. REGIE NATIONALE DES USINES RENAULT. July 29, 1955 [Aug. 4, 1954], No. 22005/55. Class 65(1) A car boot cover 5 or the like is held open by a V-grooved roller 11 carried by the cover engaging a circular part 9 formed between two arms of a stay 8 which are pivoted at 2 to the body of the car. The cover closes when sufficient force is applied to disengage the roller 11 'from the circular part 9 and allow the roller to slide down the arms of the stay 8. The arms may cross over at the top end and form a loop 9<SP>1</SP> to increase their elasticity. The stay may be made of nylon reinforced with spring steel or of superpolyamide.
Patent GB-699547-A (GB)
Title: Improvements relating to 1-dialkylcarbamyl-4-methyl piperazine mono-oxides
Filed: 1951-09-20
Abstract: The invention comprises 1-dialkylcarbamyl-4-methyl piperazine mono-oxides of the general formula <FORM:0699547/IV (b)/1> wherein R and R1 represent alkyl radicals containing from 1 to 4 carbon atoms, and a process for the preparation of the above compounds by reacting the required 1-dialkylcarbamyl-4-methyl piperazine with a peroxide or a per-acid in the presence of a solvent.  The reaction may be carried out at a temperature of 0 DEG  to 75 DEG  C.  The preferred solvents are lower aliphatic alcohols, but water and lower aliphatic ketones may also be used.  In the example 1-diethylcarbamyl-4-methyl piperazine mono-oxide is prepared by reacting 1-diethylcarbamyl-4-methyl piperazine in ethyl alcohol with aqueous hydrogen peroxide. 1-Dimethylcarbamyl- and 1-methylethylcarbamyl - 4 - methyl piperazines are referred to as additional reactants which may be used in the example.  Specification 631,685 is referred to.
Patent GB-448309-A (GB)
Title: Improvements in or relating to processes for oiling calcium cyanamide
IPC: C05C7/02
Filed: 1935-08-06
Abstract: Calcium cyanamide is oiled by adding the oil to the calcium cyanamide arriving from the nitrogenation and grinding treatment before it has completely cooled preferably when the powder still has a temperature of 100 DEG  C. or over.  The oil may be applied at the same time as the residual carbide is removed by the addition of water, the apparatus, for example a rotating drum being cooled.  Suitable oils include coal-tar oils, lignite-tar oils, mineral oils &c.  The oil should preferably have a flash point about 10 DEG  C. above the maximum temperature of the oiling plant. From 1,5 to 5 per cent of oil may be used.
Patent GB-694373-A (GB)
Title: Ignition equipment for the combustion equipment of a rocket motor
Inventor: ANDREWS EDWARD GEORGE DAVID
IPC: F02K9/95
Filed: 1950-09-08
Abstract: 694,373. Igniters for liquid fuel combustion equipment. ARMSTRONG SIDDELEY MOTORS, Ltd. July 16,1951 [Sept. 8, 7950], No.. 22157/50.. Class 75(iii) Ignition equipment 8 for the combustion equipment 10 of a rocket motor adapted to burn a mixture of liquid fuel; for instance methyl alcohol admixed with water, and oxidizer, for instance liquid oxygen or nitric acid, comprises a chamber 9 in which a portion of the fuel and oxidizer are combined and which is surrounded by a cooling jacket 19 through which a portion of the liquid fuel is passed to be sprayed from an outlet formed between the wall of the chamber 9 and a surrounding nozzle piece 19b coaxial with the chamber outlet 11 so as to burn in the burning mixture. The chamber 9 is formed as a steel shell which is cylindrical for about half its length and is then connected by a frustoconical part 18 to the cylindrical outlet 11. The jacket comprises a cylindrical part 19a to which the nozzle 19b is connected by a sleeve 19c, the jacket and shell being spaced by helical ridges 27 and by circular ridges 28 ... 30 having oblique grooves. Fuel and oxidizer are sprayed through orifices 22 in the jacket to meet near the entrance end of the chamber adjacent to a sparking plug inserted through a hole 24 in the equipment and fuel is led to the space 26 between chamber and jacket by a duct 25 in the jacket. The ignition charnber 9 communicates with the main chamber 10 of the combustion equipment so that the flame from the outlet 11 meets the main jets of liquid fuel and oxidizer from the main spray device 15. The ignition. equipment 8 is supplied with 3 per cent to 5 per cent of the fuel to the combustion equipment 10 and two parts of this fuel are fed to the jacket and one part to the chamber 9. Specification 694,371 is referred to and Specification 682,732, [Group XXVI], is referred to in the Provisional Specification.