baber/WOPTO huggingface dataset:
Patent GB-818695-A (GB)
Title: Improvements in or relating to devices controlling the feed of liquid fuel to a burner
IPC: F16K31/42
Filed: 1957-07-10
Abstract: 818,695. Valves. WANSON, L. J. July 10, 1957 [Sept. 17, 1956], No. 21947/57. Class 135. A valve unit for controlling the supply of liquid fuel to a burner comprises an electromagnetically operated pilot valve A and a main valve in the form of a piston B working in a cylinder M and forming two chambers, of which the left-hand one P may receive fuel from an inlet 6 through the pilot valve A and a duct 0<SP>1</SP>, and discharge it to the burner through a duct G, while the right-hand chamber P<SP>1</SP> communicates with the inlet 6 through a duct F fitted with an adjustable screw-down valve E, and is provided with a by-pass opening R, the setting of valve E being adjusted to produce a greater pressure drop through duct F than through duct O<SP>1</SP>. The piston B carries valves D, C which control the passage of fuel through ducts G, F, respectively. In the position shown, with pilot valve A closed, fuel from inlet 6 moves piston B to the left so that valve D closes duct G and by-pass R is opened. When pilot valve A is opened by energizing a solenoid 3 the adjustment of valve E ensures that pressure is greater in chamber P than in chamber P<SP>1</SP>, whereby piston B moves to the right, valve C thus closing duct F and valve D opening duct G, enabling fuel to flow to the burner. The piston B may be replaced by a diaphragm, while operation of the pilot valve may be effected pneumatically or hydraulically.
Patent GB-269398-A (GB)
Title: Improvements in printing machines
IPC: B41F3/36
Filed: 1926-09-06
Abstract: 269,398. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). Sept. 6, 1926. Sheet-registering devices. - A power plate-printing machine in which a reciprocating bed cooperates with an impression cylinder 5 is adapted to print on thin sheets by carrying these around the cylinder by gripper mechanism or to print on thick sheets which are carried on the bed past the impression cylinder and delivered bv an attendant after the bed has passed the raised inking- rollers. Thin sheets are registered against pivoted stops 72 normally depressed by spring- operated lever mechanism and raised into the position shown in Fig. 7 by a cam-bar 82 acting on a roller 81 on a lever arm connected to shaft 74. The bar 82 is detachably connected to the bed, so that when thick sheets are dealt with the stops 72 are held out of action. In this case the sheets are registered against an adjustable back stop. Delivery apparatus.-The sheets are stripped from the cylinder 5 by strippers 51 with bevelled fronts 52 and sheet-receiving surfaces 53. To detach the sheets from the cylinder lifting devices 44 are employed. These are mounted on a shaft 45 oscillated by a fixed cam, so as to lift the sheets as the grippers 29 release them. Rollers 85 may assist the delivery.
Patent GB-1322467-A (GB)
Title: Tube manufacture
IPC: B29C53/58
Filed: 1971-04-19
Abstract: 1322467 Making pipes VERA FABRIKKER A/S 19 April 1971 [18 Feb 1970] 21990/71 Heading F2P In a pipe-making process comprising impregnating a non-woven web 1 with plastics material 8 and winding the impregnated web on to a rotating mandrel 3, a layer of juxtaposed strands 5 is also impregnated and wound on to the mandrel and acts to support the impregnated web, so that if the plastics material 8 dissolves the binder which bonds the fibres of web 1 together, the impregnated web will not disintegrate as it is fed to the mandrel. The strands 5 also support the wound web on the mandrel while the plastics material is setting. The impregnating is effected by a transfer roller 7, whose peripheral speed is adjustable in a range of speeds higher than the speed of travel of web 1 and strands 5. The plastics material 8 may be a polyester.
Patent GB-660193-A (GB)
Title: Improvements in and relating to electronic amplifiers
Inventor: RUSSELL GRAHAM
IPC: H03F3/36
Filed: 1948-08-20
Abstract: 660,193. Valve amplifying circuits. MINISTER OF SUPPLY. Aug. 25, 1949 [Aug. 20, 1948], No. 21991/48. Class 40 (vi). A D.C. amplifier system comprises a main direct-coupled amplifier fed with the signals to be amplified and a subsidiary D.C. amplifier fed from a point in the main amplifier at which forwardly fed signals are substantially balanced by negative feed-back signals to maintain a substantially constant potential at said point in the absence of low-frequency noise in the amplifier, the subsidiary amplifier feeding an amplified version of potential fluctuations at said point into the main amplifier to compensate for low-frequency noise produced therein. As shown in Fig. 2 the main amplifier comprises valves V1 and V2, the input Vi being fed through a resistor R1 and the output taken from the cathode circuit of V2, negative feedback being provided by resistor R2 so that at point A the potential departs very little from earth and is unaffected by the signal. Resistors R3, R4 are respectively equal to or in the same ratio as resistors R1, R2, the potential at point B following with a slight delay due to capacitance C1, the potential changes at point A due to drift or low-frequency noise in the main amplifier. The potential changes at B are amplified in a " chopper " type amplifier V3, which has a good response at low frequencies and is provided with an output transformer 2, rectifier comprising switches 3, 4, operating synchronously with the chopping switch 1, and a smoothing circuit C2, C3, R5, the output being fed to the cathode resistor R6 of valve V1, and the low-frequency noise in the main amplifier being reduced by a factor equal to the gain of amplifier V3. In an alternative arrangement, Fig. 4, a similar main amplifier V1, V2 is pro- .vided with auxiliary positive and negative feedback paths RX and RC in addition to the negative feed-back provided by R2, and RX may be adjusted so that the increase in cathode potential due to a positive input voltage Vi is exactly balanced by the fraction of the decrease in output voltage Vo fed back via RX. Further reduction of RX causes the change in cathode potential to become negative with proportional decrease in the grid voltage Vg until Vg becomes zero and the grid-cathode input voltage of V1 appears wholly at the cathode. Variations due to drift in the main amplifier causing Vg to depart from its earth potential are amplified in a D.C. amplifier 1 which may be similar to that of Fig. 2, the output modifying the H.T. supply to the main amplifier to adjust Vo so that Vg is restored to zero. A magnetic amplifier may be used as the subsidiary amplifier. Specification 620,140 is referred to.
Patent GB-1070963-A (GB)
Title: Improvements in or relating to the purification of gases
IPC: B01D47/02
Filed: 1964-05-27
Abstract: 1,070,963. Gas-scrubbers. W. VON UNWERTH. May 27, 1964 [May 27, 1963], No. 21998/64. Heading B1R. A gas-scrubber comprises a housing 1 for containing liquid, a rotor mounted to rotate eccentrically within the housing and having peripherally spaced sets of teeth 5 and a gas inlet and outlet, the arrangement being such that rotation of the rotor forms liquid in the housing into a hollow column through which the gas to be scrubbed passes contacting therein the teeth of the rotor which pass into and out of the column of liquid as the rotor rotates. Alternatively the housing may be rotated and the member carrying the teeth 5 remain stationary.
Patent GB-799154-A (GB)
Title: Improvements in or relating to inverter circuits employing transistors
Inventor: MORGAN LEONARD PETER
IPC: H02M3/338
Filed: 1956-07-16
Abstract: 799,154. Converting. MULLARD RADIO VALVE CO., Ltd., July 16, 1956, No. 22005/56. Class 38 (2). [Also in Group XL (c)] A D.C. voltage is obtained by rectifying the output of a push-pull inverter oscillator comprising two transistors of the type having a current gain less than 1, each having its emitter collector path connected in series with the primary winding of a transformer across a D.C. supply and a regenerative feedback path coupling its collector-emitter circuit to its collectorbase circuit, means being provided for supplying a steady forward bias to at least one of the emitter base circuits sufficient to ensure starting of oscillation and for deriving a steady voltage by full-wave rectification of the output of the oscillator for counteracting the forward bias when the oscillator is in operation. The Figure shows a push-pull arrangement of alternately conducting junction transistors having primary windings P1, P2 in their collector circuits secondary windings connected to a full-wave rectifier DO and regenerative feedback windings F1, F2 coupled to the respective primary windings. The two pairs of windings are coupled together either by winding them on a common core (as shown) or by connecting in parallel secondary windings of the transformers. In operation, one transistor conducts permitting current to build up in the corresponding primary winding, the transistor being maintained conducting by the feedback winding. The increase of current continues until the core of the transformer saturates when the feedback rapidly decreases and the transistor cuts off. The second transistor then becomes conductive causing the current in it to build up in a similar way and eventually to trigger the first transistor. A negative starting bias is applied to the transistor base electrodes through a potentiometer chain R1-R4: and this is counteracted when the circuit is in operation by rectifying the output oscillation by means of rectifiers D1. and D2 and applying the rectified voltage to the point j in the potentiometer. The bias applied to transistor T1 is greater than that applied to T2, but the biases could alternatively be equal or be applied to one transistor only. In addition, the counteracting bias could alternatively be connected in series with the starting bias.
Patent GB-884914-A (GB)
Title: Motion transmission mechanism of the screw and nut type
Inventor: BRADLEY JOHN RAMSEY
IPC: F16H25/20
Filed: 1959-06-26
Abstract: 884,914. Screw and nut gearing. BRITISH OXYGEN CO. Ltd. June 23, 1960 [June 26, 1959], No. 22028/59. Class 80 (3). In a mechanism wherein a rotatable screw 11 moving a body 10 is engaged by two nuts 12, 13 pressed apart by a spring 34 to take up backlash, the nuts 12, 13 are mounted with rotational and axial clearance in respective housings 14, 15 secured to the body 10. Each nut 12, 13 has a portion 16, 25 of rectangular or other non-circular section engaging with clearance a corresponding recess 17, 26 in the respective housing 14, 15. Moreover, each nut 12, 13 has an attached member 18, 31 which is a sliding fit on the screw 11 and has projections 18<SP>x</SP>, 31x engaging guideways 33, so that the members 18, 31 support the screw against sagging. The nuts 12 and 13 are respectively shorter than and longer than their housings 14 and 15 to provide axial clearances (shown exaggerated). Lateral clearances may also be provided to accommodate misalignment. The screw thrust is transmitted to the housing 14 either, in one direction, through the nut 12 and member 18 or, in the other direction, through the nut 13, spring 34 and washers 24, 28. The screw mechanism is applicable to machine tools and flame cutting machines.
Patent GB-147370-A (GB)
Title: Improvements in and relating to sparking plugs
IPC: H01T13/56
Filed: 1919-09-09
Abstract: 147,370. Longton, H. Sept. 9, 1919. Sparking-plugs. - Relates to plugs in which the central electrode :3 i,s insulated by a conical sleeve of steatite, porcelain, or the like 9 secured to the plug body 1 by an internally conical gland 7, with the interposition of a thin packing. According to the invention, a packing constituted by a wrapping of mica 8 extends below the gland and, preferably, also above it, where it is also surrounded by a second insulating sleeve 10, the several parts being clamped together between an enlarged head 4 at the inner end of the central electrode and a nut 11 at the outer end.
Patent GB-1348701-A (GB)
Title: 21-halogeno steroids
IPC: A61K31/57
Filed: 1971-04-19
Abstract: 1348701 21-Halogeno-steroids SCHERING AG 19 April 1971 [28 Feb 1970] 22302/71 Heading C2U Novel steroids of the formula (wherein -A-B- is -CH 2 -CH 2 -, -CH= CH- or -CCl=CH- and X is a halogen atom) are prepared by halogenation of the corresponding 21-ols, directly or via 21-sulphonates. 6α - Fluoro - 2 - chloro - 11#,21 - dihydroxy- 16α - methyl - #<SP>1,4</SP> - pregnadiene - 3,20 - dione is prepared by direct 2-chlorination of the corresponding 21-acetate, followed by hydrolysis of the 6α - fluoro - 2 - chloro - 11# - hydroxy - 21- acetoxy - 16α - methyl - #<SP>1,4</SP> - pregnadiene - 3,20- dione first formed. The novel steroids are anti-inflammatory agents and may be made up into pharmaceutical compositions with suitable carriers.
Patent GB-883408-A (GB)
Title: End caps for bread wraps and method of applying same
Inventor: JENSEN THORMOD
IPC: B65D75/66
Filed: 1960-06-27
Abstract: 883,408. Applying end seals to bread wraps. ST. REGIS PAPER CO. June 27, 1960, No. 22449/60. Class 73 [Also in Group XVII] An end seal for a bread wrap is provided with parallel lines 8, Fig. 7, of perforations and is coated with thermoplastic adhesive except for the portion 9 between the.lines 8, the seal being applied over the end flaps of a wrapped loaf of bread by applying relatively heavy pressure on the seal over a central zone 22 transverse to the lines 8, applying relatively light pressure over the remainder of the area of the seal and simultaneously heating the seal to adhesively secure it on the end flaps. The arrangement is such that on tearing away the portion 9 as shown in Fig. 10, the upper and lower portions of the remaining parts of the seal are comparatively lightly adhered to the flaps B, D which facilitates the unfolding of the flaps without tearing of the wrapper. Means for applying the seals is shown in Fig. 2 in which the end portion 2 of a conventional wrapping machine is duplicated at each end of the loaf 3 which is carried through the machine transversely to its length. A strip of seals 7 is fed from a roll adjacent feeding and cutting mechanism 5 with the lines 8 of perforations extending vertically with respect to the horizontal travel of the loaves 3. The individual seals are severed and are initially applied to the flaps by reciprocating heated plates 10 carrying spaced horizontal ribs 11, this preliminary joining occurring principally with flaps A and C along the lines of the ribs. The loaf then moves forwardly and the seals are finally applied by reciprocating heated sealing plates 12 each having an elongated blister 13 which exerts a relatively heavy localized pressure upon the central portions of the seals, while the areas of the plate 12 above and below the blister 13 exert a lighter pressure upon the other portions of the seal.
Patent GB-233962-A (GB)
Title: Improvements in electromagnetic separators
IPC: B03C1/16
Filed: 1924-09-24
Abstract: 233,962. Wilden, B. Sept. 24, 1924. Magnetic separators.-In an electromagnetic separator of the type in which endless windings a surround a, core b and magnetizable bodies d, d<1> move beside and between the windings a, the magnetic particles clinging to the drum e after the suppression or interruption of the magnetic force are forced or repelled away from the separator by magnetic force by the sudden conversion of the polarity of the poles at the discharge point to the same sign. On the delivery side of the drums, a magnet core g is arranged between the ends of tho winding a and is provided with a pole shoe h adapted to act over the full length and breadth of the discharge zone so that the poles d, d<1> of different polarity, on arriving at the discharge point, pass transversely over the shoe h and are polarized the same sign. More than one core g placed end to end may be employed either with a common shoe h or shoes to correspond to the number of cores. Specification 1619/11 is referred to.
Patent GB-282145-A (GB)
Title: Improvements in or relating to pulverisers
IPC: B02C13/26
Filed: 1926-09-13
Abstract: 282,145. Waring, H., and Associated Lead Manufacturers, Ltd. Sept. 13, 1926. Impact pulverizers. - Relates to pulverizers or highspeed disintegrators, and comprises the combination of a rotatable beater of the type consisting of a number of outwardly-projecting arms the roots of which are clamped between discs mounted upon a substantially horizontal shaft, and a casing of which the lower portion consists of a continuous wall concentric with and close to the tips of the beater and provided with internal impact members, such as serrated plates, while the upper portion has a peripheral upwardlydirected outlet in communication with the settling-zone. A grating such as a grid of bars arranged transversely to the direction of movement of the beaters may separate the settling- zone from the zone in which the beaters rotate. As shown, Figs. 1 and 2, the cylindrical casing is made in two parts 11, 12 divided horizontally and provided with a cooling jacket 13. The feed-shoot 14 is arranged at one side of the casing, and the top of the casing is extended upwardly to provide a settling-zone 29 the top of which is open and provided with a flange 16 for connection to an outlet pipe. About two-thirds of the periphery and the end walls of the casing are lined with removable serrated plates 17, 19, and the settling-zone 29 is spanned across its lower part by a grating 20 of rectangular bars. The shanks of the beater-arms 22 have lateral extensions at their inner ends and are clamped between a central disc or boss 23 and two outer discs 24, 25 on the shaft 21, the shanks and extensions engaging in radial slots and recesses in the boss 23. The heads and nuts of the securing bolts 26 of the discs are recessed in the discs and covered by plates 27. One pair of beaterarms are clamped between the discs 23, 25, and another pair at right-angles to the first pair are clamped on the other side of the disc 23 by the disc 25, so that the two pairs of arms rotate in different planes. The tips of the arms are bent forwardly in the direction of rotation and constitute cutting-edges which co-operate with the serrations 18. The preferred peripheral speed of the beaters is 34,000 feet per minute.
Patent GB-180287-A (GB)
Title: An improved fuel for internal combustion engines or the like
IPC: C10L1/10
Filed: 1921-08-25
Abstract: Motor spirit is made by dissolving a hydrocarbon in cold benzine and adding carbon disulphide.  In an example 3 per cent of naphthalene is dissolved in benzine and 1 per cent of carbon disulphide added.
Patent GB-848153-A (GB)
Title: Improvements in thermoplastic compositions
Inventor: FIKENTSCHER HANS
IPC: C08L27/08
Filed: 1958-07-15
Abstract: A thermoplastic composition comprises up to 99% (by weight) of a polymer of vinyl chloride and/or vinylidene chloride and at least 1% of a copolymer of 88 to 99% of a polymerisable ethylenically unsaturated ester and 20 to 1% of an N-vinyl lactam. The chloride polymer may be a homopolymer or copolymer in any ratio of vinyl and vinylidene chlorides or a copolymer based thereon and containing only a minor proportion of other monomers. Polymerisable esters specified are acrylic and methacrylic esters of C1-12 alcohols, e.g. methyl, ethyl, butyl and dodecyl acrylate, and ethyl and butyl methacrylate; and vinyl esters containing up to 12 carbon atoms, e.g. vinyl propionate and butyrate.  Suitable lactams are N-vinyl-pyrrolidone,-epsiloncaprolactam, and -omega-caprylic lactam. The copolymer may also contain other vinyl compounds, e.g. styrene, vinyl ethers, vinyl chloride, and vinyl methyl ketone.  The copolymers may have varying K values, e.g. 20 to 30 ; 60 to 80 ; or below 15 ; they are soluble in aromatic hydrocarbons esters, ketones, simple alcohols, and gasoline hydrocarbons ; they are compatible with cellulose esters, alkyd resins and urea resins as well as vinyl and vinylidene chloride polymers. Examples comprise :-(i) 80 parts PVC and 20 parts 98/2 butyl acrylate/N-vinyl-caprolactam (ii) 100 parts of an 85/15 vinylidene chloride/vinyl chloride copolymer and 10 parts of a 90/10/5 butyl acrylate/N-vinyl 2-pyrrolidone/cyclohexene copolymer; and (iii) PVC and a 95/5/5 ethyl acrylate/N-vinyl 2-pyrrolidone/allyl alcohol copolymer.
Patent GB-331406-A (GB)
Title: Improvements in or relating to machines for binding paper or like sheets or sections
IPC: B42C17/00
Filed: 1929-07-23
Abstract: 331,406. Brehmer, Geb., and Kleinschmit, O. July 23, 1929. Bookbinding. - In machines for binding separate book-sheets or sections, the sheets or sections 7, 13, Fig. 3, are fed between the edges of two juxtaposed adhesive strips x, y and pass there with between compressing-devices, the adjacent lateral edges of the sheets or sections being so spaced and guided that the inner faces of the strips are secured one to the other in the centres thereof and to the. sheets along their adjacent lateral edges. The sheets or sections are laid upon a table 1, Fig. 1, adjacent to upper and lower endless conveyer-bands 3, 4. The lower paper strip x coming from a gumming or gum-moistening device 5 enters at 6 beneath the sheet sections 7, 13 which are disposed between edge guides 8, 8<1> and 9, 9<1>, Fig. 2. The upper strip, coming from a gumming or moistening device 10 on the other side of the machine, is guided by a. shoe 12 provided with a toe which extends a short distance between the conveyerbands. Oscillating pushers 2 advance the sheets between the conveyer-bands, whereupon they are moved forwardly with the strips and simulta.- neously pressed by the bands. Upper and lower rollers r, r' may be provided to bear upon the bands and consolidate the binding. Single or folded sheets may be bound together in the machine.
Patent GB-1536448-A (GB)
Title: Radiography
IPC: G01N23/04
Filed: 1976-06-01
Abstract: 1536448 Radiography EMI Ltd 23 May 1977 [1 June 1976] 22637/76 Heading H4F In a computed tomography scanner in which the origin of a fan-shaped beam 16a, 16b of X-  rays is scanned along an extended anode 15 of an X-ray tube 11, the scanning is monitored between the tube 11 and a patient 1 by a collimatordetector 14 which provides signals indicative of the progress of the scanning of the origin, which signals are compared at 26 with scanning signals derived from the mechanical motion of the orbital scanning of the X-ray tube 11 and main detectors 12, whereby the scanning of the electron beam of the X-ray tube can be corrected if the comparison reveals any error.
Patent GB-1471937-A (GB)
Title: Semiconductor device comprising two parallel-connected diodes
IPC: H01L25/03
Filed: 1974-05-21
Abstract: 1471937 Semi-conductor devices THOMSON-CSF 21 May 1974 [22 May 1973] 22701/74 Heading H1K Two semi-conductor diodes 1, 2 are mounted in a common housing with their cathodes 8, 11 soldered to the conductive base 5 and cover 6 thereof respectively and their anodes 9, 12 connected via conductive wires to braids 10, 13 to the cover 6 and base 5 respectively, contact between the wire 10, 13 being avoided by locating them in different, non-parallel (preferably perpendicular) planes. The base 5 and cover 6 are joined by an insulating ring 7. The ends 105 of the wire 13 are preferably embedded in brazing material 101 on the base 5, while the ends 103 of the wire 10 are preferably embedded in brazing material 100 on the cover 6 and are located between the cover 6 and the ring 7. The assembly is particularly useful as a passive limiter for microwave applications.