baber/WOPTO huggingface dataset:
Patent GB-578201-A (GB)
Title: Improvements in and relating to power reduction circuit for radio receivers
IPC: H03F3/22
Filed: 1944-01-19
Abstract: 578,201. Wireless receiving circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 19, 1944, No. 1064. Convention date, Jan. 22, 1943. [Class 40 (v)] The power output amplifier of a receiver is arranged to be muted by rectified noise voltages which are passed by a limiter in the absence of a received carrier wave, so as to economise power during stand by periods. The Figure shows the invention applied to muting the output stages of a frequency modulation receiver in the absence of a received signal. The receiving channel comprises, after the I.F. amplifier 14, a limiter 15 and a discriminator 16 of the phase shift type having an output resistance 43 from which the demodulated signal is fed through capacity 45 to the grid of an audio amplifier 17, the output from which is fed to a final power amplifier 18. The audio load resistance 43 is also connected to a highpass filter 71, 69 which blocks signal frequencies but passes noise voltages to the grid of an amplifier 70 having in its anode circuit a resistance 73 serving as a load for audio noise voltages, and a resistance 51 byepassed by condenser 52, which serves as a load for slow changes in anode current. The voltage across 51 is applied as additional bias to the grid of valve 17, while noise voltages from 73 are fed through condenser 74 to a noise amplifier and detector 75 to produce across resistance 57 a rectified noise voltage which is applied as bias to power amplifier 18. In the absence of a received signal, limiter 15 passes noise voltages which are fed to valve 70 to produce across load 51 a bias which cuts off amplifier 17, thus preventing reproduction of noise. Also audio noise voltages in the output of valve 70 are fed through condenser 74 to valve 75 for amplification and rectification to produce across resistance 57 a voltage which biasses power valve 78 to cut-off, thus economising power. When an adequate signal is received, the noise is stopped at the limiter 15 and thus the muting voltages are not produced and the receiver is operative. In this condition valve 70 is biassed to cut-off. Whenapplied to an amplitude modulation receiver, the muting circuit 70, 75 is supplied from an auxiliary limiter and demodulator fed from the I.F. output. Specification 568,697 is referred to.
Patent GB-632024-A (GB)
Title: Improvements in or relating to a method of preparing aqueous dispersions of an acid reacting synthetic resin
IPC: C09K23/00
Filed: 1948-01-14
Abstract: Synthetic resins prepared by Diels-Alder reaction between a terpene or diterpene and an ethylene-a  : b -dicarboxylic acid are dispersed in an aqueous medium by heating under pressure at a temperature between 140 DEG  and 200 DEG  C. with alkali and water.  There are specified: terpenes-natural resins having or forming on heating a conjugate double bond system, e.g. rosin, turpentine, a -terpinene, a -pinene, b -pinene, dipentene, limonene, terpinolene; acids-maleic, fumaric, itaconic, citraconic, and maleinanilic acids and their anhydrides; alkalis-caustic soda or potash.  The preferred resin is a rosin-maleic reaction product. The resin is preferably heated in an autoclave at 160-170 DEG  C. with an amount of alkali sufficient for 30-50 per cent neutralization of the resin.  After being heated for 1/2 hour, the mix may be allowed to cool to 60-90 DEG  C. before discharge from the autoclave.  The quantities of ingredients used may be 50-80 per cent (by weight) resin, 4-14 per cent alkali and 6-46 per cent water.  A concentrated dispersion so produced may be diluted with 15 to 60 times its weight of water at 10-65 DEG  C. to give a dilute dispersion which may be used in the rosin-sizing of paper, in quantity such that the amount of condensate added is 5-40 per cent of the weight of rosin used. Examples illustrate the application of the process to rosin-maleic, rosin-citraconic, and terpinene-maleic condensates.  According to the Specification as open to inspection under Sect. 91, it refers broadly to the use of Diels-Alder reaction products from substances having or forming upon heating a conjugate double bond system (of which it additionally specifies anthracene) and organic acids containing a CO : C : C grouping (of which it additionally specifies cinnamic acid).  This subject-matter does not appear in the Specification as accepted.
Patent GB-112808-A (GB)
Title: Improvements in or relating to Inseam Trimming Machines.
IPC: A43D49/00
Filed: 1917-01-23
Abstract: 112,808. British United Shoe Machinery Co., (United Shoe Machinery Co.). Jan. 23, 1917. Disk apparatus; machine cutters, grinding in situ.-In an inseam-trimming machine for boots and shoes of the type described in Specification 16277/15. the frusto-conical trimming-knife 1 is sharpened by a rotary grinding disk 90 supported upon an adjustable head 91 and mounted on a shaft 92, which carries a worm 94 meshing with a wheel 95 journalled in a head 91 and having an eccentric bushing 96 rotating in a block 97, which can slide in ways in a carriage 98. This carriage forms a bearing for the shaft 92 and serves to impart a slow reciprocating movement to the disk 90 as it is rotated. The shaft 92 is driven direct from the power shaft by a belt 125 passing over an idler pulley 128, which is journaled on a curved arm 129 pivoted at 130 to the machine frame. The belt is tightened to drive the shaft 92 by swinging the arm 129 upwards, which is provided with a toothed portion 131 engaged by a latch pin 133, and when the arm is swung back again a brake member 136 binds the belt against an idler pulley 137.
Patent GB-853191-A (GB)
Title: High energy radiation method for production of cellular materials
Inventor: WADDINGTON FRED BERRY
IPC: C08J9/06
Filed: 1957-01-11
Abstract: Cellular materials are produced by mixing a polymerizable material or a rubber composition with a blowing agent such as benzoyl peroxide, a a 1 azo-di-isobutyronitrile or azo-cyclohexanoic dinitrile, and exposing the mixture to high energy radiation for a time that is sufficient to cause decomposition of the blowing agent to the required extent and to cause polymerization of the material or composition to proceed to the solid state.  The Specification refers to the treatment of natural and synthetic rubbers and of a paste of styrene and silica.ALSO:Cellular materials are produced by mixing a polymerizable material or a rubber composition with a blowing agent such as benzoyl peroxide, a a 1 azo-di-isobutyronitrile or azo-cyclohexanoic dinitrile, and exposing the mixture to high energy radiation for a time that is sufficient to cause decomposition of the blowing agent to the required extent and to cause polymerization of the material or composition to proceed to the solid state.  The Specification refers to the treatment of natural and synthetic rubbers and of a paste of styrene and silica.ALSO:Cellular materials are produced by mixing a polymerizable material or a rubber composition with a blowing agent such as benzoyl peroxide, a a 1 azo-di-isobutyronitrile or azocyclobenexansic dinitrile, and exposing the mixture to high energy radiation for a time that is sufficient to cause decomposition of the blowing agent to the required extent and to cause polymerization of the material or composition to proceed to the solid state.  The Specification refers to the treatment of natural and synthetic rubbers and of a paste of styrene and silica.
Patent GB-413344-A (GB)
Title: Improvements in the manufacture and production of sulphuric esters of leuco compounds of vat dyestuffs
IPC: C09B9/00
Filed: 1933-01-13
Abstract: Leuco vat-dyes, sulphuric esters of.--Reduction products of vat-dyes which are stable in the air and substantially insoluble in dilute aqueous alkalis, are treated with agents supplying sulphur trioxide in presence of organic bases, preferably tertiary organic bases to give sulphuric esters of the leuco compounds. The starting materials are obtained by reducing vat-dyes in slightly alkaline or neutral, but preferably in acid media in presence of solvents or diluents, and then heating until compounds which are difficulty soluble or insoluble in cold aqueous solutions of alkalies are formed (cf. Specification 395,183). Thus in the case of dyes of the indigo and thioindigo series they may be converted to leuco compounds in known manner and then heated at 50--100 DEG  C.; or reduction may be by hydrogen under pressure or by means of other reducing agents and the further heat treatment may be effected with simultaneous evaporation or distillation of solvent.  In the case of anthraquinone vat-dyes, similar treatment may be employed or reduction may be effected by means hydroxy-methane sulphinic acid sodium salt at temperatures of 95--100 DEG  C. until the stable products are deposited. Advantageously vat-dyes containing substituents such as halogen, alkyl, aryl, oxyalkyl may be so converted to starting-materials for the present process.  In examples, the stable reduction products of the following vat-dyes are converted into leuco sulphuric esters by chlorsulphonic acid or its ethyl or methyl esters in presence of pyridine or dimethylaniline :-5,5<1>,7,7<1>-tetrachlorindigo (cf. example 1 of Specification 395,183), 4,4<1>-dichloro-5,5<1>-dibromindigo (cf. example 8 of Specification 395,183), 4,4<1> - dimethyl - 6,6<1> - dichlorthioindigo (prepared by heating the dye with alkaline hydrosulphite at 70 DEG  C. and acidifying with bisulphite), 5,5,7,7<1>-tetrabromindigo (cf. example 6 of Specification 395,183), 2,6-diphenyl-1,3,5-triazine-4-carboxy-(a -amino -anthraquinone) (prepared by reducing the dye in pyridine with sodium hydrosulphite and heating at 55 DEG  C.), N-dihydro-1,2,2<1>,1<1>-anthraquinoneazine (prepared by reducing the dye in triethanolamine with hydroxymethanesulphinic acid sodium salt, and heating to 95--100 DEG  C.), and 3,3<1>-dichloro-N-dihydro-1,2,2<1>,1<1>-anthra quinoneazine (prepared as immediately preceding).
Patent GB-382479-A (GB)
Title: Improvements in or relating to electrical cookers
IPC: H05B3/70
Filed: 1932-01-15
Abstract: 382,479. Wire resistances. MAXIM SOC. ANON. FABRIQUE D'APPAREILS THERMO-ELECTRIQUES, Aarau, Switzerland.-(Assignees of Hofer, H. ; Aarau, Switzerland.) Jan. 15, 1932, No. 1288. Convention date, Jan. 21, 1931. [Class 37.] A resistance for a boiling-plate or other cooking - apparatus has the resistance wire 1 bent into zig-zag shape and embedded in an insulating mass 2 which is inserted between ribs in the body 5 of the plate, so that the windings are in planes perpendicular to the surface of the plate. The grooved body 5 may be of cast iron or ceramic material. Two or more wires may be arranged parallel to one another in each groove.
Patent GB-1506145-A (GB)
Title: Waste compactors
IPC: B30B9/30
Filed: 1975-04-08
Abstract: 1506145 Waste compactors R G DIXON & CO Ltd 8 April 1975 [10 Jan 1974] 01297/74 Heading B8C A waste compactor having a ram reciprocable into and out of a container to compress the waste material into the latter comprises ram position indicating means, outside the working area of the ram, which includes a feed screw 61 coupled to the ram drive means and carrying a non-rotatable nut member 62, the movement of which reproduces the movement of the ram on a reduced scale. The apparatus described is a modified form of that detailed in Specification 1,370,856. The screw 61 is mounted on the upper end of the drive-shaft 4, and switches 65, 66, 67 correspond to those (33, 41, 40) of that apparatus. A modified door is described, Fig. 6 (not shown).
Patent GB-1450817-A (GB)
Title: Blending valve device for regulating a fluid pressure actuated friction brake on a vehicle having dynamic braking
IPC: B60T15/36
Filed: 1974-01-10
Abstract: 1450817 Valves for actuating brakes in lieu of dynamic braking WESTINGHOUSE AIR BRAKE CO 10 Jan 1974 [22 May 1973] 01299/74 Heading F2F In a valve assembly for regulating a fluid pressure operated friction brake, in association with dynamic braking to produce a consistent combined braking effect in response to a command signal, a control lever 6 is acted upon by a first moment produced by drive means 8 to actuate a valve 9 to operate the friction brake, this moment being counteracted by a second moment varying inversely with the brake command signal and a third moment proportional to the dynamic braking. The drive means 8 comprises an adjustable spring 31 operating through a pin 32 on to the lever 6 so that the valve 9, comprising inlet and exhaust ball valve members interconnected by a rod 45 are actuated to communicate a pressure source 13 via a check valve 51, passages 50, 53 with friction brake units in the rail vehicle, movement of a stem 36 operating a sleeve 44 to open the inlet valve and close the exhaust valve and a passage 56 to atmosphere. A feedback chamber 55 connected to the passage 53 and operating on a diaphragm 40 provides the requiredbalancing for fixing pressure valves at given lever positions. Torque motors 16, 17, operated by a signal in a brake command train line 71 and by a current generated by regenerative braking in a resistor 72, respectively, operate respective bull valves 15 to throttle flow from the pressure source 13 at a downstream one of two respective series of throttles 10, 11, the back pressure between the series operating respective fluid motors 3, 5 (the latter having two diaphragms 38, 39 in a differential area assembly) to act on respective stems 25, 36 to counteract the effect of the pin 32. Thus the torque motor 16 with the fluid motor 3 is fail-safe, and the braking of the brake units increases as the regenerative dynamic braking decreases. The lever 6 has a movable fulcrum constituted by a roller 26 supported by a carriage 63 movable to the right against a spring 67 by pressure in a chamber 65 which increases with vehicle loading. A screw 60 varies the fulcrum position for the unloaded condition and a nut 69 engaging coils of the spring 67 determines the upper loaded limit for the fulcrum position.
Patent GB-764422-A (GB)
Title: Improvements in wellpoints
IPC: E21B7/18
Filed: 1955-01-17
Abstract: 764,422. Filters. MILLARS MACHINERY CO., - Ltd. (Foundation Equipment Corporation). Jan. 17, 1955, No. 1342/55. Class 46. [Also in Group XXI] A wellpoint for attaching to the lower end of a drill string contains a filter 11 comprising an outer metal sleeve member 39 having holes 41, an intermediate fine mesh tubular screen 40 and an inner member 35 having axial ribs 36 with lateral slots 38 in the channels between the ribs. A ball valve 29 prevents fluid passing upwards through the middle of the filter and so by-passing it.
Patent GB-157436-A (GB)
Title: Apparatus for the intensification without distortion of sounds and tones, for the purposes of acoustic kinematography
IPC: H03F1/00
Filed: 1921-01-10
Abstract: 157,436. Massolle, J., Vogt, H., and Engl, J. July 25, 1919, [Convention date]. Thermionic relays.-Relates to sound recording and reproducing apparatus in which a record is photographically produced on a film, the sound being reproduced by apparatus employing photoelectric cells. According to the invention, intensification of the micro-currents involved in the recording and reproduction is effected by amplifying valves which are galvanically coupled without the use of low frequency transformers. In the case of apparatus employing high frequency currents, high frequency transformers free from iron are employed. Fig. 1 shows a recording apparatus comprising a microphone M and three valves R1, R2, R3. Em is a source of potential connected in circuit with the microphone M through a resistance w1. E1, E2, E3 are sources of potential for the anodes a1, a2, a3, and are connected to the cathodes k1, k2, k3 through resistances w2, w3, w4. The grid-cathode paths of the valves are coupled across the resistances w1, w2, w3 through condensers C1, C2, C3. To the anode circuit of the last valve is applied the recording device proper. This system may be used either for low frequency or for high frequency intensification. In the latter case, one of the sources of potential Em or E1 is a high frequency source. Fig. 6 shows a reproducing system employing high frequency intensification. Z is a photo-electric cell having an anode a and cathode k. The first tube R1 has an auxiliary grid gh supplied with high frequency potential from a source H through a transformer t1. Successive tubes are coupled by high frequency transformers t2, t3, t4 without iron cores.
Patent GB-590225-A (GB)
Title: Improved means for the control of temperature or rate of flow of liquids
IPC: G05D23/13
Filed: 1945-01-17
Abstract: 590,225. Thermally-actuated valves. HAMILL, W. W., and MEADOWS, Ltd., H. Jan. 17,1945, No. 1388. [Class 135] In a device for regulating the temperature or rate of flow of liquids, applicable to the mixing of hot and cold liquids and of the type comprising a front plate 3, Figs. 1, 2, a back plate 2, an intermediate annulus 1 and a temperatureresponsive rotatable sector plate 8 adapted to coact with liquid ports in the back plate, the front plate is provided with a flange for mounting the device on, for example, a facia board, whilst the back plate is provided with two integral elbow-shaped inlet or outlet conduits 5, 6 and an inlet or outlet conduit 7. In a modification, the elbows 10, Fig. 4, are formed separately and are provided with spigots which engage the ports in the back plate, whereby the elbows may be angularly adjusted, a clamping plate 14, secured to the back plate by a stud, being used to hold the elbows in position.
Patent GB-1075509-A (GB)
Title: A combined road-rail vehicle
Inventor: KELLER RALPH EDWIN
IPC: B60F1/00
Filed: 1966-01-12
Abstract: 1,075,509. Road-rail vehicles. KALAMAZOO MANUFACTURING CO. Jan. 12, 1966, No. 1413/66. Heading B7D. In a vehicle with both flanged and resiliently tyred wheels arranged to engage a railway track the axles carrying the flanged wheels 14 are each mounted on a pair of vertical posts 16 slidable in slideways 18 by manually controlled means such as hydraulic rams 25 between a raised position and a lowered position in which they are engaged by feet 32 of pivoted thrust members 35. The thrust members are pivotable by manually operated cables 38 against the urge of springs 40 from the post engaging position. Desirably the non-driven flanged wheels support 25% of the vehicle weight.
Patent GB-1242202-A (GB)
Title: Improvements in or relating to shaped cokes
Inventor: BEYER HANS-DIETER
IPC: C22B19/08
Filed: 1970-01-12
Abstract: 1,242,202. Treating coke. BERGWERKSVERBAND G.m.b.H. 12 Jan., 1970, No. 1447/70. Heading C5G. Coke, especially shaped coke, is impregnated with a 5% to 30% aqueous boric acid solution at a temperature in the range 50‹ to 100‹ C. to reduce the reactivity and increase the abrasion resistance of the coke. The coke itself is preferably at a temperature in the range 100‹ to 300‹ C. during impregnation, which in specific examples is by dipping.
Patent GB-1421657-A (GB)
Title: Braided fabric bearing liner
IPC: F16C33/12
Filed: 1973-01-11
Abstract: 1421657 Braids TEXTRON INC 11 Jan 1973 [20 Jan 1972] 1554/73 Heading D1K A braided low-friction tubular bearing fabric comprises a plurality of threads each comprising the same number of untwisted strands of the same bulk, at least one strand or thread being primarily of PTFE while the remainder and majority are primarily of high temperature nylon filaments. When the fabric is consolidated with a cured impregnant resin and used as a bearing PTFE is available for lubrication. There is preferably more than 50% by volume of nylon. The braid may consist of a repeating pattern of one primarily PTFE thread 10 to three primarily nylon threads 11, 12, 13, Fig. 1, e.g. made on a 120 carrier machine with 90 carriers threaded with primarily nylon thread and 30 with primarily PTFE. Otherwise each thread may consist of three primarily nylon strands and one primarily PTFE strand.
Patent GB-377644-A (GB)
Title: Tailors' pin
IPC: A44B9/00
Filed: 1931-01-19
Abstract: 377,644. Dress pins. AURORA AKT.-GES., Vaduz, Germany. Jan. 19, 1931, No. 1701. Convention date, Jan. 21, 1930. Void [Published under Sect. 91 of the Acts]. [Class 131.] A tailor's pin p comprises two spaced shanks connected at one end by a bent portion, the other ends of the shanks being provided respectively with a point and a head. The pointed shank may be -longer or shorter than the headed shank. The shanks may be parallel or'they may be at an angle. One or both of the shanks may be corrugated and/or flattened.
Patent GB-103996-A (GB)
Title: Improvements in Furnaces for the Manufacture of Malleable Cast Iron or Steel.
Inventor: GEUZE LEON
IPC: F27B3/00
Filed: 1917-02-02
Abstract: 103,996. Geuze, L. Feb. 8, 1916, [Convention date]. Open-hearth furnaces.-A furnace for the manufacture of malleable cast iron or steel comprises preheating-hearths 1, 2 for melting down scrap iron and steel and cast iron, and a heating-chamber 3 for the mixture. The furnace is gas-fired, and portions of the products of combustion are exhausted through flues 6 near the outer ends of the preheaters. The charges are fed to the furnace by reciprocating pushers 4.
Patent GB-912562-A (GB)
Title: Crack resistant austenitic stainless steel alloys
IPC: C22C38/58
Filed: 1961-01-16
Abstract: A crack-resistant steel comprises: .Fe. .Cr.12-25% .Ni.5-30% .Mn.6-20% .Ta.0.2-3.0% .C.up to 0.2% .N.up to 0.2% .Si.up to 2.0% Mo, V and W may be added in such amounts that "equivalent molybdenum," defined as " <FORM:0912562/II/1> " is not more than 8 with individual maxima of Mo 8% W 10% + V 4%.  The following elements may be added or may be present as impurities:  .Nb + Ti < 1/5 Ta. .up to 0.2% Al. .up to 0.01% B. .up to 0.2% Fr. .up to 5% Co. and P and S in usual amounts  Figs. 5 and 6 (not shown) indicate the effect on susceptibility to hot cracking of 16% Cu 20% Ni balance iron alloys of the addition of various elements including Cu Hf Zn and B.
Patent GB-565985-A (GB)
Title: Improvements in or relating to automatic regulating systems
IPC: G05D1/08
Filed: 1943-02-03
Abstract: 565,985. Automatic control systems. NISBET, R. H., and SPERRY GYROSCOPE CO., Ltd. Feb. 3, 1943, No. 1767. Drawings to Specification. [Class 38 (iv)] [Also in Group XXIX] In an automatic regulating system in which the force applied to the power-operated member is regulated in dependence on a force determined by the relative movement between a primary control member and a member co-operating therewith and applied to the co-operating member to restore it, the restoring movement of the member is-opposed by a force dependent on its movement and by one or more forces dependent upon one or more time derivatives of its movement. In an electro-hydraulic automatic pilot, an inductive pick-off generates an A.C. signal which is amplified and applied to a receiver, e.g. a torque motor, which actuates a servomotor control valve. The amplified signal is also applied to an electric motor geared to the pick-off, which is provided with a centralising spring and a dashpot, the inertia of the motor armature providing a second time derivative in the control.
Patent GB-729515-A (GB)
Title: Improvements relating to sweep yoke assemblies for cathode ray tubes
IPC: H01J29/76
Filed: 1953-01-21
Abstract: 729,515. Cathode-ray tubes. GENERAL ELECTRIC CO. Jan. 21, 1953 [Jan. 22, 1952], No. 1780/53. Drawings to Specification. Class 39 (1). The deflecting coils are wound so that the fields are additive and, when arranged in a single plane, appear wound in reverse directions. The coils are connected in parallel or series and are wound and pressed to the required shape and assembled within an iron cylinder which forms part of the magnetic yoke. The cathode-ray tube is applicable to television or radar. Specification 694,008 is referred to.