baber/WOPTO huggingface dataset:
Patent GB-368337-A (GB)
Title: Improvements in or relating to high frequency transmitters
IPC: H03C1/62
Filed: 1930-12-02
Abstract: 368,337. Wireless transmitting apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Marconi House, Strand, London, and GREEN, E., Penrose, Long Stomps, Chelmsford. Dec. 2, 1930, No. 36322. [Class 40 (v).] A radio or like transmitter is rendered active and inactive under the control of speech or other signals by means of a rectifier containing a resistance-capacity combination in its output circuit, the voltage across which controls an absorber valve serving to divert anode feed current from one or more of the high-frequency amplifiers. Speech or other signals are applied to the grids of valves V1, V2, and the amplified signal current passes on the one hand to the modulator via the transformer T1, and on the other hand through a potentiometer R1, R2 and transformer T2 to a pair of choke-capacity coupled amplifiers V3, V4. The output from the valve V4 is rectified by a valve V5 and charges a resistance-shunted capacity C4. The presence of signals causes the upper plate of the condenser C4 to acquire a negative charge, and raises the internal resistance of the subsequent valves V6, V7, and owing to the external plate resistance R5, the plate voltage rises. The rise in voltage is communicated through a battery B2 to the grids of further valves V8, V9 which then pass plate current from a high-voltage source HT2 through resistance R6. Their plates become less positive, and a fraction of this voltage fall (determined by the resistances R7, R8 and battery B3) is applied to the grid of the final valve V10 cutting off the plate current through this valve. A resistance R9 in the plate circuit is also in the plate supply circuit DL of the radio transmitter, which is thus brought into action when signals are present, and is inoperative when signals are absent. The suppression of the carrier during non-signalling periods eliminates singing round the circuit and prevents undue interference with adjacent receiving apparatus, particularly in ship installations.
Patent GB-818462-A (GB)
Title: Manufacture of anhydrous aluminum chloride
IPC: C01F7/60
Filed: 1955-12-19
Abstract: <PICT:0818462/III/1> <PICT:0818462/III/2> A process for manufacturing anhydrous aluminium chloride comprises applying to bauxite whilst passing through a horizontal rotary kiln successive small proportions of liquefied asphalt, the kiln being maintained at a temperature suitable at least partially to carbonize said successive portions, and chlorinating the so-formed hot aggregate in a retort at 540 DEG to 815 DEG  C. with chlorine gas.  The bauxite charge may have a minor proportion of coke mixed therewith, or if desired a solid asphalt may be present therein; the coke resulting from the liquid asphalt should be at least equal to any coke added to the charge. Asphalts are specified having softening points from 31 DEG  to 227 DEG  C., and the bauxite may be calcined or uncalcined and may if desired e preheated.  In the apparatus shown in Fig. 1, the bauxite charge of size 1 cm. and less is passed from hopper 4 into rotary kiln 1 fired with a burner 6, preferably to a temperature to permit discharging in the region of 870 DEG  C. and slowly passes with the assistance of longitudinal lifters (not shown) toward a bin 9 separated by a wall 10 from furnace chamber 2.  Asphalt is supplied by means of nozzles 39, each of which is supplied from a separate pipe lying within a jacketed conduit 31 and connected with header 41 or 42.  Conduit 31 is thermally insulated and a cooling medium such as steam is employed.  After formation of the aggregate (which has a very high surface area, see Group II, in the rotary furnace and after crushing, if necessary, the materials are passed via an elevator 12 (Figs. 1 and 1a) to retort 16, preferably after being discharged from the kiln at such a temperature as to allow charging to said retort at between 650 DEG  and 870 DEG  C. or less.  In the retort the aggregate is contacted with a stream of chlorine entering from pipe 45 and, if desired, to maintain the temperature, with oxygen, e.g. as air from line 46.  The volatile products are passed through a precooler 18 to be cooled to about 260 DEG  C., preferably merely by indirect heat exchange with the atmosphere and thence to cooling tubes 20 and 21 preferably surrounded by water jackets where the aluminium chloride is collected.  Scrapers 23 attached by chains to rotatable rods 22 are provided and the product is removed from bin 26.  In another apparatus (Fig. 5, not shown), the furnace gases are passed in cocurrent with the furnace charge.  Examples are given. Specification 807,884 is referred to.
Patent GB-1346353-A (GB)
Title: Vehicle braking force regulating systems
IPC: B60T8/70
Filed: 1971-08-03
Abstract: 1346353 Anti-skid braking systems DAIMLER-BENZ AG 3 Aug 1971 [4 Aug 1970] 36461/71 Heading F2F In a braking force regulating system for vehicles wherein the fluid pressure acting on a brake is controlled by means of signals as a  function of wheel acceleration or deceleration by a normally open electromagnetically operated inlet valve and an electromagnetically operated normally closed outlet valve, at each closing of the inlet valve a signal is passed simultaneously through a connecting element to the associated outlet valve for a brief definite period to open the valve and slightly reduce the brake pressure. Inlet valve 20 is controlled through an amplifier arrangement comprising driver and final stages 21, 22 by a signal fed through conductor 23 and outlet valve 24 is controlled through an amplifier arrangement comprising driver and final stages 25, 26 by a signal present in conductor 27, the conductors. 23, 27 being connected together through a resistance 30 and capacitor 31 so that a signal appearing in conductor 23 controls the outlet valve for a period determined by the resistance and capacitance of the connection. It is stated that the time interval may depend in duration upon ambient temperature or brake disc temperature.
Patent GB-831117-A (GB)
Title: Improvements in and relating to scarifying blades
IPC: E02F9/28
Filed: 1955-12-20
Abstract: 831,117. Scarifying blades. BOERS, E. F., BOERS, G. S., MAIR, L. M., ALLEN, J. H., BOERS, R. A., BURMAN, M. T., and HAHN, M. B., [trading as SHUNK MANUFACTURING CO!]. Dec. 20, 1955 [May 5, 1955], No. 36469/55. Class 107 [Also in Group XXI] A scraper or like machine has a scarifying blade having a toothed leading edge 15 and having both the leading and trailing edges bevelled. The trailing edge may also be toothed as at 16<SP>1</SP>, holes 12 being provided for means bolting the blade to the scraper.
Patent GB-156138-A (GB)
Title: Process for the extraction of montan wax from bituminous coal
IPC: C10G73/00
Filed: 1920-12-31
Abstract: Montan wax is extracted from bituminous coal by highly dispersing the latter in hot water, preferably in the presence of small quantities of emulsifying agents, such as 1-10 per cent of caustic soda, soaps, lysalbinic or protalbinic acid, alkaline protein compounds, gluten or its decomposition products, or sugar, or 1-5 per cent of solvents such as benzene, benzine, pyridine, acetone, or alcohol.  The dispersion is effected in a colloid mill such as that described in Specification 155,836.  After removal of coarse impurities by filtration, the dispersion is treated with small quantities of salts or acids and allowed to settle.  The montan wax is obtained from the resulting sludge by heating with a solvent, by distilling in superheated vapours of solvents, or by salting out.ALSO:Montan wax is extracted from bituminous coal by highly dispersing the latter in hot water, preferably in the pressure of small quantities of emulsifying agents, such as 1-10 per cent of caustic soda, soaps, lysalbinic or protalbinic acid, alkaline protein compounds, gluten or its decomposition products, or sugar, or 1-5 per cent of solvents such as benzene, benzine, pyridine, acetone, or alcohol.  The dispersion is effected in a colloid mill such as that described in Specification 155,836.  After removal of coarse impurities by filtration, the dispersion is treated with small quantities of salts or acids and allowed to settle.  To obtain the montan wax from the resulting sludge, the latter may be either heated in an autoclave to 110-130 DEG  C. with 10-30 per cent of a solvent of the wax, or it may be dried and distilled, preferably in vacuo, with superheated vapours of solvents, such as petroleum, aniline, toluene, xylene, or benzene, with or without superheated steam, or the wax may be salted out from the sludge by heating the latter to 110-130 DEG  C. with from 2-5 times its volume of a concentrated solution of a neutral salt or with a substance like naphthalene which dissolves montan wax while hot. The wax obtained by the first process may be repurified by solution in benzene or its homologues, benzine, aniline, quinoline, alcohols, acetone, or chlorinated hydrocarbons.
Patent GB-853649-A (GB)
Title: Improvements in and relating to high-lift devices for aircraft
IPC: B64C29/00
Filed: 1958-11-14
Abstract: 853,649. Aircraft. NORD-AVIATION SOC. NATIONALE DE CONSTRUCTIONS AERONAUTIQUES. Nov. 14, 1958 [March 10, 1958], No. 36663/58. Class 4. An aircraft comprises a wing 1 with a high lift flap or flaps 2, and a jet engine 4 connected to the wing and orientatable so that the jet may be directed either towards the flaps or parallel to the wing chord. In the embodiment described, the jet engine 4 is pivoted on a transverse pin 5 to a boom 6 rigid with the wing, and is orientatable by a hydraulic, pneumatic, or electric jack 7 pivoted to the wing and engine at 8 and 9 respectively. For take-off and normal flight, the jack 7 is extended so that the jet stream discharges parallel to the wing chord, giving maximum thrust. For landing, the engine is tilted, as shown, the jet stream flowing through slots 3 in the flap 2, which is lowered to obtain high lift. The jet stream outlet is flared as seen in plan, so that the stream diverges laterally.
Patent GB-882180-A (GB)
Title: Improvements in or relating to casters
IPC: B60B33/00
Filed: 1958-11-14
Abstract: 882,180. Castors. SHEPHERD, G. F. Nov. 14, 1958, No. 36741/58. Class 52(1) The pintle 10 and axle 5 of a castor having a bowl 2 on an inclined axis are secured in their sockets 9, 26 by spring split rings 4, 6 carried in grooves in the pintle and axle, the sockets being capable of holding lubricant. Specifications 622,730 and 639,526 are referred to.
Patent GB-464272-A (GB)
Title: Improvements in or relating to grates
IPC: F24B1/28
Filed: 1935-10-14
Abstract: 464,272. Combination fireplaces. FORTH & CLYDE & SUNNYSIDE IRON COS., Ltd., and RANKINE, W. Oct. 14, 1935, No. 37085/34. [Class 126] In a back-to-back combination open fire place and cooking stove having an over 2 provided with a door at each end so that access may be had to it from both rooms, the door 3 at the fireplace side is of the hingec fall - down type, anc the door 4 at the cook ing-stove side is of the balanced sliding type The oven is preferably supported on runners so that it may be with drawn.
Patent GB-1116989-A (GB)
Title: Siloxane compositions for treating cellulosic materials
IPC: C08K5/00
Filed: 1965-08-31
Abstract: A composition for rendering cellulosic fibrous sheet material adhesive (see Division B2) comprises by weight (1) 1 to 30 parts of a linear siloxane of the formula <FORM:1116989/C3/1> wherein n is at least 4500, (2) 0.005 to 0.45 part of RaSi(OOCR1)4- a, where R is a monovalen hydrocarbon radical free of aliphatic unsaturation, R1 is an alkyl radical of 1 to 4 C atoms and a is 0 or 1, (3) 0.003 to 0.36 part, as metal, of an organometal or metal-carboxylate, and (4) 70 to 99 parts of an organic solvent, the ratio of (2)/(1) being from 0.5 to 1.5 wt. per cent and the ratio of (3)/(1) being from 0.3 to 1.2% by wt., as metal of (3).  After removal of solvent, the composition will cure in the presence of moisture. Examples describe treating baths of the above composition.ALSO:Cellulosic fibrous sheet material, e.g. paper and paperboard, is rendered abhesive by treating the sheet material in a bath comprising, by wt., (1) 1 to 30 pts. of a linear siloxane of the formula:  <FORM:1116989/B1-B2/1> wherein n is at least 4500, (2) from 0.005 to 0.45 pt. of RaSi(OOCR1)4-a where R is a monovalent hydrocarbon radical free of aliphatic unsaturation, R1 is an alkyl radical of 1 to 4 C atoms and a is 0 or 1, (3) from 0.003 to 0.36 pt., as metal, of a metal or organometal carboxylate, and (4) from 70 to 99 pts. of an organic solvent, (see Div. C3) and thereafter removing the solvent and curing the coated material. The coating composition cures in the presence of moisture.  In a typical Example 1, a bath containing a 10% solution, in toluene, of a hydroxy-terminated dimethyl siloxane gum, methyltriacetoxy silane (1% based on the siloxane gum) and a xylene solution of dibutyl tin dilaurate (10% based on the siloxane gum), was applied to a clay-coated paper by standard metering techniques, and the resulting coated paper was exposed to air at room temp. and then heated for 1 min. at 150 DEG F.  The coated paper was found to have release properties normally found in coatings cured at higher temps.
Patent GB-303354-A (GB)
Title: Improvements in cinematographic apparatus
IPC: G03B21/50
Filed: 1928-12-17
Abstract: 303,354. PathÚ Cinema, Anciens Etablissements PathÚ FrÞres, Dec. 31, 1927, [Convention date]. Kinematograph apparatus.-In apparatus comprising means for stopping the mechanism at a definite position in the cycle of movements, and to enable film threading to be effected without fogging the film, the mechanism is stopped at a position such that the shutter is closed and the feed claws are partly withdrawn from the gate, and the gate is provided with a film channel of sufficient depth to guide the edges of the film as the film is passed through the clearance between the claws and the movable part of the gate. As shown, a shaft 2, driven by a spring motor 1, carries a crank 4 moving a link 5 carrying feed claws 6 and guided by a pivoted arm 8. The crank 4 is also connected by a link 10 to a bell-crank 11 which reciprocates a vertically sliding shutter 12. The shaft 2 carries a plate 16 which may be engaged by a stud 17 to stop the mechanism in a position such that the shutter is closed and the claws are partly withdrawn through the aperture plate 14, and the claws are then preferably at the bottom of their stroke, as shown. The fixed part of the gate 15 has lateral heads 18 forming a film channel of sufficient depth to guide the edges of the film as it is passed during threading, between the claws 6 and the pressure frame 21 on the movable part of the opened gate.
Patent GB-1108406-A (GB)
Title: Preparation of cyclododecatriene
IPC: B01J31/38
Filed: 1966-08-19
Abstract: Cyclododecatriene-(1,5,9) is prepared by trimerizing butadiene in the presence of a catalyst prepared from:-  (a) Ethyl aluminium sesquichloride, which is defined as any compound of formula <FORM:1108406/C4-C5/1> (b) An alcohol of formula <FORM:1108406/C4-C5/2> where the R's, which may be the same or different, are C1- 10 alkyl groups at least one of which has at least one hydrogen atom on the carbon atom attached to the -C-OH group (e.g. 2-methyl-2-propanol); and  (c) Titanium tetrachloride; the molar ratio of (b) to (a) being 0.3-0.9:1. Preferably the molar ratio of (a) to (c) is 3-30:1. Solvents which may be present include benzene, toluene, xylene and cyclododecatriene.
Patent GB-902910-A (GB)
Title: Improvements in or relating to skylight constructions
Inventor: WASSERMAN MAX
IPC: E04D13/035
Filed: 1958-11-20
Abstract: 902,910. Skylight opening and closing apparatus; ventilators. JACET CHEMICAL CO. Inc. Nov. 20, 1958, No. 37423/58. Classes 20 (3) and 137. A pivoted dome-shaped skylight 9 is provided with a spring arrangement adjacent the hinge for continuously biasing the skylight to an open position and with a lever linkage system adapted to lock the skylight in a number of different positions. In one form, Fig. 1, two leaf springs 28, 29 are secured at one end to each other and to the ends of a similar pair of springs, the connected ends of the four springs being parallel, while the free ends of each pair are fitted in a sleeve 37 and slot 38 on the skylight structure 11 and frame 8 respectively. In the closed position as shown, the free end of spring 28 is twisted through 90 degrees, so that when the skylight is released the torque tension in the spring causes the skylight to open until the springs are parallel throughout their length. In a modification, Fig. 4, two resilient steel springs 107 are bent around the pivot rod 103 connecting the skylight 101 and frame 100, one limb 108 of each spring having a bend 109. Release of the skylight closure causes the springs to assume the untensioned position as shown. In both embodiments the skylight may be locked in several positions by means of the lever linkage system and notched plate shown in Fig. 1. A plate 41 with notches 43 at its forward edge is riveted to a sidewall 1b of the curb frame. An angled lever arm 48 is pivotally secured at 46 to the plate 41 and has a twisted lever arm 49 pivoted to its free end, the other end of the lever 49 being fixed to the skylight at 52. The skylight is held in a selected locked position by a spring-pressed pawl 61 engaging in any one of the notches 43. The pawl 61 is pivoted at 62 to the lever arm 48 and is releasable from the locked position by movement of a rod 59 linking the pawl and a plate 56 pivoted adjacent the other end of the lever 48; such movement is effected by pulling downwardly on a cord 70 against the action of a spring 67. Specification 709,049 is referred to
Patent GB-880233-A (GB)
Title: Improvements in or relating to methods of soldering
IPC: B23K1/08
Filed: 1959-11-05
Abstract: 880,233. Joining metals by electro-deposition. SIEMENS & HALSKE A.G. Nov. 5, 1959 [Nov. 5, 1958], No. 37585/59. Class 41. [Also in Group XXII] In soldering two metal members, the members are held with the portions to be joined adjacent, these portions are immersed in a melt containing at least one metal compound and a potential is applied between the members and the melt so that metal capable of forming a solder is electrolytically deposited on the members, the temperature of the melt being equal to or above the melting point of the deposited metal. The lower end of an iron housing 1, for a semiconductor component 3, having press fitted therein an iron bush 2 through which passes a lead through insulator, is immersed in a melt 4, at a temperature of 150-300‹ C., preferably 260‹ C. containing 6% cadmium chloride, 56% indium monochloride and 38% zinc chloride. The housing is connected to the negative pole of a voltage source of 10-20 volts and the melt is connected to the positive pole by a tungsten electrode 6 and a current of 40 amps. per square cm. is passed. A liquid layer of an indium-cadmium alloy coats the metal parts and penetrates by capillary attraction into the interior of the joint to form a vacuum tight seal when the housing is withdrawn. The anode may alternatively be a melt of the metal to be deposited or of carbon and large amplitude current pulses may be superimposed on the direct current. The members to be joined may form an acute, Fig. 2a, an obtuse or a right angle with one another.
Patent GB-1115398-A (GB)
Title: Comb
IPC: A45D24/02
Filed: 1966-08-23
Abstract: 1,115,398. Combs. J. JENSEN. 23 Aug., 1966, No. 37633/66. Heading A4V. A comb made from a flexible resilient material e.g. rubber, ebonite or other plastic material is coated with a metallic coating of thickness 1-10 Á which covers the total surface of the comb, suitably by depositing the vapour of a metal e.g. Ag or Al on to the comb, under vacuum. The metal coating prevents the accumulation of static electricity and may, if desired, be covered with a thin layer of lacquer without destroying the anti-static properties.
Patent GB-1278302-A (GB)
Title: Ambient condition measuring method and apparatus
Inventor: HERSHLER ABE
IPC: G01N27/12
Filed: 1969-07-28
Abstract: 1278302 Photo-electric testing A HERSHLER 28 July 1969 [17 March 1969] 37702/69 Heading G1A [Also in Division G2] In an apparatus for and a method of measuring an ambient condition, electromagnet radiation is directed at an angle of incidence approximately equal to the critical angle on to an interface between a transparent substrate and a layer of transparent material having a refractive index not exceeding that of the substrate and an electrical conductivity which is varied by the condition to be measured, and the intensity of the radiation returned from the interface is measured as an indication of the condition. A plurality of substrates in the form of a U-shaped rod 11, Fig. 1 are used in an instrument for measuring relative humidity, a preferred substrate being divinylbenzene cross-linked polystyrene with the outer variable conductivity layer formed by sulphonating a face of the substrate to form a water-insoluble ion-exchange surface layer 24, Fig. 2 in the hydrogen state and the surface being treated subsequently with a metal salt such as lithium to produce a lithium ion state. Details of the process are included. The "U" rod is enclosed in a double-wall 13 which permits the ingress of moisture but keeps out ambient light, a lamp 18 being directed at one end-face and a lamp 20 at the other. The arrangement may include a second uncoated substrate rod for reference purposes. In an alternative arrangement, Fig. 6, light is conveyed to and from a tapered or conical coated block 52 by guides 56, 57.
Patent GB-1058123-A (GB)
Title: Improvements in or relating to selective printers
Inventor: FORD ROBERT BROUGH
IPC: B41B21/22
Filed: 1963-09-25
Abstract: 1,058,123. Photographic type-composing machines. CREED & CO Ltd. Sept. 18, 1864 [Sept. 25, 1963], No. 37711/63 Heading B6W An optical apparatus for displaying and erasing of a message comprises a matrix 2 provided with a plurality of characters 3, 4 adapted to emit ultra-violet radiation which is passed through a system of lenses 5, 10, and pivotally mounted mirrors 6, 9 on to a phosphorescent screen 1, coated with zinc sulphide phosphor, to display the characters 3, 4 as luminous characters on a non-luminous background. Message is displayed by selectively pivoting the mirror 6 to establish a path between the selected character and an aperture 8 obturated by a shutter 12 during character selection and opened for transmission of the radiation when mirror 9 has been pivoted in letter spacing direction to the next character position. To erase the displayed message mirror 6 which is mounted on shaft 14, Fig. 2 (not shown), and associated with a coil 15 is moved into the path of an erasure pad 13, Fig. 1, adapted to emit infra-red radiation by applying a D.C. current to the coil 15 and the infra-red radiation is permitted to sweep along the linearly extending message by oscillating the mirror 9 which is mounted on a shaft 22 due to application of an A.C. current to the coil 23 mounted on the shaft 22. Other kinds of radiations of two different wavelengths may be used.
Patent GB-1337106-A (GB)
IPC: B65B57/20
Filed: 1972-08-14
Abstract: 1337106 Packaging apparatus TETRA PAK INTERNATIONAL AB 14 Aug 1972 [19 Aug 1971] 37835/72 Heading B8C A device for inserting groups 4 of parallelopipedic packages 1 downwardly from conveyer 2 into a carton 26, comprises parallel, contrarotatable rollers 9, 10 fitted with elongated ledges 7, 8 on to which each group 4 is pushed by a reciprocating end-plate 11, the packages being gripped between the rollers and fed down to the carton 26. Conveyer 25 advances the carton after each group 4 is inserted, and is synchronized with rollers 9, 10 via chain drives 22, 24 from motor 23. Rotation of rollers 9, 10 is initiated by photo-cell 5 in response to the passage of four packages. A movable barrier 3, also controlled by photo-cell 5, blocks the continuing delivery of packages 1. Plate 11 is carried on piston-rod 12 and is reciprocated longitudinally and laterally as follower 30 moves in cam track 13.