baber/WOPTO huggingface dataset:
Patent GB-815614-A (GB)
Title: Improvements in amplifier for pulse type signals
IPC: H03K5/135
Filed: 1956-07-09
Abstract: 815,614. Pulse amplifying and lengthening circuits. SPERRY RAND CORPORATION. July 9, 1956 [July 28, 1955], No. 21181/56. Class 40 (6). In an amplifying system an amplifier 18 is provided with feed-back including a circuit 60, 62 which is more effective initially but tapers off during the signal, a circuit 14 being fed with the input signal from terminals 12 and the fedback signal to energize the input of the ampli.- fier 18, signals applied at terminal 38 periodically interrupting the feed-back. In the quiescent condition diode 30 is biased off by the positive potential at terminal 40 until an incoming signal at terminal 12 is effective over the OR gate 14 to cause diode 30 to conduct and a signal to be passed to the emitter-base circuit of transistor 48 which conducts to feed a signal over windings 52, 36 to the feed-back path. The positive-going signal on line 22 is passed through networks 60, 62 and diode 26 to maintain the amplifier 48 fully conducting. As capacitor 62 charges the amount of feed-back falls to a value just sufficient to maintain the conducting state. A negative-going clock pulse applied at terminal 38 causes the potential of junction J to fall thereby biasing off the diode 30 and breaking the feed-back loop. The circuit remains in the quiescent condition until the receipt of the next signal, Fig. 3 (not shown). In a modification, Fig. 5 (not shown), the gate circuit 16 is transferred to a position in the feed-back loop between networks 60, 62 and diode 14 so that only the feed-back loop is interrupted. The amplifier 18 may include thermionic discharge tubes or magnetic amplifiers.
Patent GB-228468-A (GB)
Title: Pocket knife
IPC: B26B11/00
Filed: 1924-09-08
Abstract: 228,468. S³ss, J. Sept. 8, 1924. No. Patent granted (Sealing fee not paid). Pencil and like holders.-A pencil holder 7 and a penholder 6 are hinged at the outer ends of a two-part casing formed in the back of a pocketknife 1, the parts of the casing being normally covered by spring-controlled covers 3, 4, forming the back of the knife; when the covers are lifted, springs 9 raise the holders to the open position for use, the covers being then allowed, to return to the closed position.
Patent GB-1338151-A (GB)
Title: Process for preparing microcapsules
IPC: B01J13/12
Filed: 1971-04-19
Abstract: 1338151 Encapsulation method FUJI PHOTO FILM CO Ltd and TOYO JOZO CO Ltd 19 April 1971 [3 Feb 1970] 21232/71 Heading B8C Microcapsules are made by dissolving a filmforming polymer in a solvent having a dielectric constant between 10 and 40 and being insoluble or only sparingly soluble in a mineral or silicone oil, dispersing a (solid or liquid) core material in the solution and dispersing the resultant in the mineral or silicone oil in the form of fine droplets. Thereafter, the solvent is caused to evaporate, e.g. by gentle heating, and the polymer encapsulates the core material. Suitable solvents are: NeOH, EtOH, iso-PrOH, BuOH, benzyl alcohol, ethylene glycol, propylene glycol, phenol, acetone, acetic anhydride, nitromethane and ethylene diamine. Suitable polymers include cellulose esters and ethers, shellac, P.V.P., polyvinyl alcohol, acrylic and methacrylic polymers and co-polymers, styrene/ maleic anhydride copolymers and gelatin/ alkyl sulphate complexes. The core material may be an enzyme or a chemical, e.g. tolylene diamine HCL or Na2CO3.
Patent GB-180600-A (GB)
Title: Improvements in or relating to carburetters for internal combustion engines
IPC: F02M7/14
Filed: 1921-08-11
Abstract: 180,600. Pocklington, C. C., Johnson, L. J., and Sutton, C. T. Aug. 11, 1921. Spray carburettors.-The fuel-nozzle is controlled by a needle valve i adjustably mounted in a tubular plunger b sliding in a casing a and provided with a rack face b<1> engaged by a toothed quadrant c<1> formed on a lever c actuated by a Bowden wire f. The casing a is secured to the nozzle body j by a clamping device a<3> and carries an arm a<2> which forms a support for the outer member f<2> of the Bowden wire and also for the volute spring g which loads the lever c. Fuel enters the nozzle through ducts j<4>. The lever c is mounted on a pin c<2> carried by a pair of lateral lugs. In a modification, the casing screws into the bottom of the nozzle and the arm a<2> is secured between a nut and shoulder thereon. According to the Provisional Specification the needle valve may control the flow of fuel to the jet orifice.
Patent GB-811799-A (GB)
Title: Improvements in or relating to compressor or exhauster drives
IPC: B60T17/02
Filed: 1956-07-11
Abstract: 811,799. Automatic speed control systems. GRESHAM & CRAVEN Ltd., MARSH, G. C., and HUNTER, I. P. July 10, 1957 [July 11, 1956], No. 21440/56. Class 38 (4). The speed of a braking compressor or exhauster 20, Fig. 1, driven by the main diesel engine 24 of a locomotive is maintained constant by a steplessly variable speed-changing gearbox 21, which is controlled by an electrical servomotor 23 responsive to a speed-sensitive device 26 and arrangements are provided whereby the gear-box is returned to its lowest ratio on shut down. Relays which control the servomotor and are housed in a unit 29 may be switched by change-over switch 27 to maintain the compressor or exhauster at one of two predetermined speeds. The driven shaft 1, Fig. 2, which causes permanent magnets 4 to rotate within soft iron laminations 5, generates eddy currents in an aluminium cup 6 to rotate a shaft 8 carrying relay operating contacts 9 to a position indicative of the speed of shaft 1 determined by a counter torque spiral spring 7. Increase and decrease speed relays are connected to insulated contact segments in the housing, separate pairs of segments being provided for the alternative speeds. The gear-box is returned to its lowest ratio on shut down by the action of spring 7.
Patent GB-276829-A (GB)
Title: Improvements in hydraulic dynamometers
IPC: G01L3/20
Filed: 1926-09-01
Abstract: 276,829. Heenan & Froude, Ltd., and Walker, G. H. Sept. 1, 1926. Dynamometers, rotaryabsorption. - Relates to hydraulic apparatus of the type described in Specification 24949/10 and consists in the provision of means whereby the radial depth of water forming the vortex in the pockets or cups can be positively regulated independently of the rate of supply of water to the cups. The stator A is formed with vanes forming cups or pockets a<1> and a rotor B formed with two sets of vanes forming cups b<1> air passages and water passages being provided in one or more vanes of the stator. One of the cups a' in the stator is provided with guides c radiating outwards from the centre of the vortex. A plate c is moved in the guides by a screw c<2> and in the position shown has the edge c<1> at the centre of the vortex. By sliding the plate outwards the edge c<1> forms a weir over which part of the water spills into a chamber a<4> formed in the cup by a web a<5> and which communicates by a passage a<6> with an outlet for the water. When the plate c is in the " open " position there is practically no radial depth of water in the vortex. Where two plates c are employed the screws may be geared together by a chain d and they may be operated from one hand-wheel D. In a modification a tube closed at the outer end and open at the vortex end may project into the vortex, ports in the, tube communicating with a chamber arranged just outside the stator. Two of these may be operated by chain and screw gear as before. In another modification, the two tubes are connected by a cross-head which is operated by a screw.
Patent GB-1476556-A (GB)
Title: 1,4-cyclohexadiene-1-carboxaldehyde synoxime synthetic sweetening agents
IPC: A23L27/30
Filed: 1975-05-20
Abstract: 1476556 Oximes STANFORD RESEARCH INSTITUTE 20 May 1975 [10 June 1974] 21567/75 Heading C2C [Also in Division A2] The invention comprises 4-methyl, 4-methoxymethyl and 4-(1-methoxyethyl)-1,4-cyclohexadiene - 1 - carboxaldehyde syn oxime. The compounds may be prepared by reacting the corresponding aldehyde with hydroxylamine. 1,4 - Cyclohexadiene - 1 - carboxaldehyde syn oxime may be prepared similarly.
Patent GB-1392368-A (GB)
Title: Jacquard and loop transfer knitting machine
IPC: D04B15/78
Filed: 1972-05-09
Abstract: 1392368 Knitting machines EDOUARD DUBIED & CIE SA 9 May 1972 [10 May 1971] 21602/72 Heading D1C A parallel knitting machine, capable of Jacquard patterning and loop transfer, has a cam carriage 25 with cam grooves for at least one feed and for loop transfer, the needles 11 being displaceable relative to the cam grooves which cause them by engagement with their butts 11a to knit, tuck or miss by rocking levers 10 articulated to hooks 15 having oppositely projecting butts 15b; 15c engageable respectively in guide grooves 30; 31 or. 32 in mutually opposed surfaces in an extension of carriage 25 and extensions 15d pressed against curved components 29, e.g. by springs 33, the hooks 15 being selectable by electromagnets 35 which are stronger than the springs so that, according to whether they are selected or not, their butts enter one of the pairs of inlets 30a, 31a; 30i, 32a; 30e, 31c and 30k, 32e to the guide grooves 30, 31, 32. The carriage 25 has knitting feeds I and III and a stitch transfer portion II, the cams forming paths (a), (b) and (c) for the needle butts corresponding to inoperative, tuck, and knit and stitch transfer paths (d), (e) and (f) corresponding to inoperative, cast-off stitch and receive stitch. Sections 31b, 30c and 32c set the hooks 15 whose butts engage them at levels which correspond to the butts 11 a of the needles not projecting, projecting slightly 11a' or projecting extensively 11a".
Patent GB-320931-A (GB)
Title: Improvements in or relating to induction dynamo-electric machines
IPC: H02K17/36
Filed: 1928-07-25
Abstract: 320,931. Gill, J. F., and Chaviara, J. N. July 25, 1928. Alternating - current induction machines.- For power-factor improvement in induction motors or generators of the type consisting of two rotors, coupled both electrically and mechanically and giving equal or different voltages and equal currents, and two stators directly connected in series or parallel to a common supply, the ratio of stator to rotor ampere turns on load in the two machines is made respectively greater and less than unity and the k.v.a. capacity of the machine with the smaller ratio is made greater than that of the other; in addition, the two machines operate at different flux densities and stator magneto-motive forces, the machine which has the higher density and magneto-motive force having a lower k.v.a. capacity than the other one. The Specification describes, with the aid of vector diagrams, the actions in such a pair of coupled motors whereby one part is caused to act as a normal motor and the other as an under-excited machine so that the leading wattless k.v.a. in the one compensates the lagging k.v.a. in the other. Fig. 4 shows in outline a squirrel-cage machine in which the two portions a<1>, b<1> of the rotor are separate and carry a common cage. The stator element b, which has a magneto-motive force greater than that of its rotor, has a greater number of turns than the other stator a, this being effected by employing two sets of star-connected series-wound turns one of which is wound around the stator b only and the other around both stators in a 3-phase star system. The total k.v.a. rating of the machine a, a<1> is greater than that of the machine b, b<1> but per unit length of rotor it is less. In place of using a single machine divided into two parts as in Fig. 4, two separate machines may be employed with their slip-ring rotors mechanically and electrically coupled. Specifications 9534/00 and 6956/09 are referred to.
Patent GB-423932-A (GB)
Title: Improvements in and relating to thermionic valves
IPC: H01J19/02
Filed: 1933-08-02
Abstract: 423,932. Discharge apparatus. ELECTRIC & MUSICAL INDUSTRIES, Ltd., Blyth Road, Hayes, Middlesex, SHOENBERG, 1., 202, Willesden Lane, Kilburn, London, BULL, C. S., 33, Micawber Avenue, Hillingdon, and RODDA, S., 15, Osterley Park Road, Southall, both in Middlesex. Aug. 2, 1933, Nos. 21653 /33, 21654 /33, 21655 /33, and 13169 /34. [Class 39 (i)] A screen-grid tube has an auxiliary electrode located at least mainly clear of the path of the electron stream and adapted when maintained at a low potential to modify the field in the space between the anode and the screening electrode so that with the control grid and auxiliary electrode at cathode potential and the screen grid at a positive potential equal to the mean anode potential the anode voltageanode current characteristic exhibits no inflexion. In one form, Fig. 1, a rectangular cathode a is surrounded by control grids b and screen grids c spaced from each other and from the cathode above and below by insulating strips k. The auxiliary electrode consists of a box-like structure e having internal fins l and portions u in the place of the anodes d. The distance between the anode and the screening grid should not be less than twice the pitch of the screen grid. In a modification, the auxiliary electrode is continued round the back of the anodes d and the portions z are omitted, being replaced by screens connected to the screening grid. In another modification, the fins l are omitted. In another form, Fig. 8, the cathode a is surrounded by control grid b, screen grid c and a two part anode d, the parts being separated by a two-part auxiliary electrode l which is connected to the cathode or furnished with an external lead. Metal or insulating shields t prevent secondary electrons from reaching the screen grid in the shadow of the supports s. The anode and auxiliary electrode may consist each of more than two parts and may be secured to upper and lower mica sheets, into which the grid posts fit, by bent-over lugs. In a modification, cylindrical anode members alternate with cylindrical auxiliary electrode members along the length of the cathode. In another modification the auxiliary electrode e consists of extensions of the screens t. As shown in Fig. 18, an anode d may be supported from auxiliary electrode parts e by an insulating bar x engaged by a bar w fixed to the anode d and clamped by tongues v<1>, v<2> struck out of the electrodes e<1>, e<2>. In a modification the anode d is riveted to a thin bar x. The arrangement shown in Fig. 1 may be modified by omitting the side portions z and by substituting for the fins l rectangular apertured sheets which are spaced from the screen grid c by insulating spacers. The grid posts are then secured to upper and lower mica sheets to which the anodes are secured by bentover tongues. The auxiliary electrodes are tied together by welded straps. The anodes and control grids may be connected together or brought out separately if push-pull amplification is desired.
Patent GB-986300-A (GB)
Title: Substituted alkyne diols
IPC: C07C29/42
Filed: 1963-05-30
Abstract: The invention comprises compounds of the general formula <FORM:0986300/C2/1> (wherein R1 represents an aliphatic hydrocarbon group and R2 represents an alkyl or aryl group), pharmaceutical preparations containing them, and their preparation by reacting an a -hydroxyketone of the formula <FORM:0986300/C2/2> with an organometallic compound derived from a propargyl halide and magnesium, aluminium or zinc, followed by decomposition of the metal derivative so formed.  The compounds of the invention have sedative, hypnotic and narcotic activity, and may be administered orally or parenterally in the form of pharmaceutical preparations (e.g. powders, granules, syrups, emulsions, suspensions, tablets, coated tablets, pills, capsules and cachets, or preparations contained in ampoules) containing them in association with a carrier or excipient. Specification 966,115 is referred to.
Patent GB-1390664-A (GB)
Title: Circuits utilizing gyrators
IPC: H03H11/08
Filed: 1972-05-10
Abstract: 1390664 Active filters WESTERN ELECTRIC CO Inc 10 May 1972 [11 May 1971] 21716/72 Heading H3U A circuit which simulates a transformer comprises two gyrators with parallel connected RC circuits N1, N2, N3 coupling them to one another and to input and output points between which they are cascaded. A ¢ db. Chebychev response may be obtained.
Patent GB-199978-A (GB)
Title: Apparatus for heating water
IPC: F24H1/10
Filed: 1922-08-11
Abstract: 199,978. Ringbom, O. A. Aug. 11, 1922. Heating water.-In a direct contact heater, water sprayed from a jet 11 up a flue 3 strikes a baffle 5 in an enlargement 4 and falls over a baffle 7 into a collecting ring 6, being heated by the uprising products of combustion from a burner 13.
Patent GB-244190-A (GB)
Title: Improvements in space discharge tube systems for the manipulation of high frequency currents
IPC: H03C1/54
Filed: 1924-09-17
Abstract: 244,190. Western Electric Co., Ltd., (Western Electric Co., Inc.). Sept. 17, 1924. Thermionic modulating systems.-In order to improve the efficiency of thermionic modulator systems, particularly of the balanced type described in Specification 130,219, in which the high frequencies are applied between the cathode and modulating input transformer, the high-frequency input is now arranged so as to prevent shunt losses across the distributed capacity of the low-frequency input transformer. Provision is also made to preserve the static balance of the opposed modulating tubes under dynamic or working conditions. As shown in Fig. 1, condensers 9, 10 are interposed between the carrier input transformer 11 and the grids of the modulator tubes 6, 5. These condensers are sufficiently large to pass the full potentials from the coil 11, but prevent any flow of modulating current, whilst choke coils 12, 13 prevent the highfrequency energy from reaching the modulating circuits and there being lost by capacity effects. As shown in Fig. 3 carrier currents from the source 12 are fed to the modulating tubes in parallel across separate coils 14, 15, whilst speech frequencies are supplied. from a microphone 8 acruss a grounded transformer 10. A variable condenser 16 enables the valve input circuits to be accurately matched. In a modified arrangement the carrier input is applied across a single coil in the common grid-filament circuits of the modulating tubes, and a retardation or choke coil is interposed in each grid circuit between the grounded transformer and the carrier input. In Fig. 2, a compensating tube 14 is inserted in series with the external plate circuits of the modulators 15, 16, its input circuit being in parallel with the input to the modulaors. The variable impedance of the tube 14 is utilized to balance both the variation in impedance within the tubes, and also the effect of the high-tension source and other external impedances, under working conditions, thus ensuring a more effective suppression of the modulated carrier component in the output circuits.
Patent GB-690394-A (GB)
Title: Improvements in and relating to fluid pressure operated valves
Inventor: STEENBERG ALEXANDER WILHELMUS
IPC: F16K31/122
Filed: 1950-09-06
Abstract: 690,394. Fluid-actuated valves. DIKKERS & CO., N. V. G. Sept. 6, 1950, No. 21981/50. Class 135. A fluid pressure operated valve comprises a closure member 3 the rod 4 of which carries a piston or diaphragm 6 having pressure fluid at 8 supplied to or exhausted from one side for closing or opening the valve respectively, while the opposite side is connected via ports 9 to the discharge opening of the valve casing, and an unperforated Venturi insert 2 at the inlet to the casing having an outlet passage area smaller than the inlet area so that the pressure in the valve casing is less than that in the inlet conduit. The supply and exhaust of fluid is controlled by valve means, and the fluid may be taken from the inlet conduit. The valve is opened by inlet pressure acting on the valve and outlet pressure on the lower end of the piston.
Patent GB-299937-A (GB)
Title: Improvements in liquid level indicators
IPC: G01F23/16
Filed: 1927-08-28
Abstract: 299,937. Wollaston, H. J. Buchanan-. Aug. 23, 1927. Addition to 281,817. Indicators actuated by pressure of head of liquid. -The liquid level or depth indicator described and claimed in the parent Specification is modified for use with tanks not at atmospheric pressure, by the provision of an additional pipe from the other side of the gauge to the space above the liquid in the tank. A dip pipe 4 is connected to a horizontal pipe coil a, which is partly filled with liquid and is connected by an air pipe 5 to a gauge comprising a similar pipe coil b with upstanding tube 3. The otherend of the tube b is connected by a pipe 6 to the top of the tank 2. When used with a steam boiler, the pipe leading to the steam space of the boiler may include another horizontal pipe coil ;n which condensate collects and maintans the part of the pipe next the gauge charged with air.
Patent GB-1242863-A (GB)
Title: 2,3-DIHYDRO-5H-THIAZOLO[2,3-b]QUINAZOLINES AND PROCESSES FOR THE PREPARATION THEREOF
Inventor: RUBINSTEIN KURT
IPC: C07D513/04
Filed: 1968-05-10
Abstract: 1,242,863. Anti-inflammatory &c. medicines. PHARMACIA AS. 9 May, 1969 [10 May, 1968], No. 22223/68. Heading A5B. [Also in Division C2]  Pharmaceutical preparations showing, in particular, anti-inflammatory, analgesic, hypothermic and sedative properties, contain as active ingredient compounds I (including salts and hydrates thereof) wherein X is O, S, NH or alkylidene (especially CH 2 ), R 1  and R 2  signify H, alkyl or alkoxy or R 1  and R 3  together signify alkylidene, R 3  and R 4  signify H, OH, alkyl, alkoxy, CO 2 H, alkoxycarbonyl or CONH 2  and R 5 , R 6 , R 7  and R 8  signify H, halogen, CF 3 , OH, alkyl, alkoxy, alkylthio, CO 2 H, alkoxycarbonyl, CONH 2 , NO 2  CN, NH 2  or dialkylamino. Administration may be orally, parenterally or topically and the other actives can be incorporated in the preparations.
Patent GB-359930-A (GB)
Title: Improved device for examining electric sparks of internal combustion motors
IPC: F02P17/00
Filed: 1930-07-24
Abstract: 359,930. Indicating ignition working. STCHEPOTIEFF, P., 13, Rue Grandgagnage, Liege, Belgium. July 24, 1930, No. 22353. [Class 7 (iv).] Indicating. -Vacuum tubes are connected to condensers 1 consisting of insulated wires or wire fabric arranged along the conducting leads to the spark plugs 6. An earthed conductor 4 runs through the casing 3 containing the connections 2.
Patent GB-779475-A (GB)
Title: Apparatus for the measuring, indicating and recording of the driving conditions of motor vehicles
IPC: G07C5/06
Filed: 1955-08-04
Abstract: 779,475. Indicating and recording devices on vehicles. KIENZLE APPARATE GES. Aug. 4, 1955 [Aug. 4, 1954], No. 22454/55. Class 79(3). [Also in Group XIX] A casing 1 containing apparatus for measuring, indicating and recording driving conditions of motor vehicles is mounted in the instrument panel, a frusto-conical closure 7 containing the clockwork for indicating time and driving the recording disc carrier 8 ; the clockwork comprising a spring gearing and escapement arranged side by side in one plane. Time is indicated by hands 13, speed by pointer 14, and such factors as stopping and starting times, speed &c. are recorded by devices 3 on a rotating disc 20.
Patent GB-632503-A (GB)
Title: Electrical connectors
IPC: H01R13/621
Filed: 1946-07-30
Abstract: A socket in a plug and socket connector is made from bar stock copper alloy containing 1.9 per cent to 2.3 per cent beryllium. The stock if of 1.5 in. diameter has a Brinnell hardness 160 to 225 and in larger diameters a hardness 200.  After forming, the socket is heat-treated at 575 DEG F \sB 10 DEG  until the temperature is uniform, i.e., for large sockets for 3 hrs. \sB 10 mins., and for small sockets 1 hr. \sB 10 mins.  To ascertain if the treatment is satisfactory, the socket is tested for hardness which should be greater than Rockwell C38.  The cooperating pin is made from bar stock tellurium copper alloy having a minimum of 99.2 per cent copper and 0.3 per cent to 0.7 per cent tellurium, a tensile strength of 48,000 lbs. per square inch to 58,000lbs. per square inch, and a Rockwell hardness F85.