baber/WOPTO huggingface dataset:
Patent GB-791001-A (GB)
Title: Improvements in and relating to smoothing networks
Inventor: OAKES FRANCIS
IPC: H02M1/15
Filed: 1955-02-15
Abstract: 791,001. Smoothing direct current. FERGUSON RADIO CORPORATION, Ltd. Feb. 14, 1956 [Feb. 15, 1955]; No. 4548/55. Class 38 (2). A circuit 16 for smoothing the output of a rectifier 13 comprises a transistor 21 of which the collector and emitter electrodes are connected respectively to input and output terminals 17; 22 of the smoothing circuit, the base electrode being connected to the junction point of a resistor 19 and capacitor 20 connected'in series between input terminal 17, and'the other input and output terminals 18, 23. The time constant of charge and discharge of the capacitor exceeds ¢ f where f is the frequency of the supply to be rectified. With the rectifier poled as shown in Fig. 1 a P-N-P transistor is used, but with reverse poling, the transistor is of the N-P-N. type, Fig. 2 (not shown). Smoothing circuit 16 may be preceded by a capacitor in parallel and. an inductor in series, Fig. 3, (not shown). Resistor 19 may be replaced; by an inductor or inductor-resistor combination. Two or more transistors may be connected in parallel, and several smoothing networks may be connected in cascade.
Patent GB-1025173-A (GB)
Title: Improvements in or relating to antibiotics and the manufacture thereof
Inventor: CRAVERI RENATO
Filed: 1962-02-06
Abstract: A new antibiotic substance named thermorubin is of weak acidic character and insoluble in water, ethyl ether and petroleum ether, very poorly soluble in methanol and low molecular weight alcohols, ethyl acetate and higher esters, benzene, chloroform and acetone, and very soluble in dioxane, tetrahydrofuran, dimethyl-formamide and pyridine, decomposed at 190 DEG  C. (darkening) and has a melting point not lower than 300 DEG  C., its elemental analysis being C=64.15%, H=4.24%, 0=31.50% and approximate molecular weight determined cryoscopically of 432 indicating the approximate formula C22H18O8; thermorubin forms salts with alkalies, has specific rotatory power [a ]25D = + 14 DEG  (C = 0.4 in dioxane), shows ultra-violet absorption maxima at 300, 328, 414 and 430 mm  and details are given in the Specification of absorption bands in the infra-red.  Thermorubin is produced by cultivating under aerobic conditions a thermorubin producing strain of Thermoactinomyces antibioticus, particularly T. antibioticus ATCC 14570, in aqueous medium containing a source of carbon, nitrogen and essential inorganic salts, preferably for 12 to 48 hours at about 50 DEG  C. and pH 6.5-10.5, and recovering the antibiotic from the medium, preferably by solvent extraction.
Patent GB-226709-A (GB)
Title: Improvements in doctors for paper-making machines and the like
IPC: D21G3/00
Filed: 1924-02-25
Abstract: 226,709. Bertram & Son, Ltd., J., White, J., and Gray, F. W. Feb. 25, 1924. Doctors for paper machines comprise a series of separate fingers 3 anchored to a bar 2, each finger either acting as a spring or being urged against the roll 4 by outside pressure such as by supplementary springs 6, Fig. 2, or by fluid pressure applied by means of an envelope 7 .extending across the fingers.
Patent GB-346095-A (GB)
Title: Improvements in or relating to the manufacture of pipes from asbestos-cement or like mixtures
IPC: B28B21/74
Filed: 1930-02-12
Abstract: 346,095. Moulding pipes. KÍNIG, E., Sch÷ndorf, Austria. Feb. 12, 1930, No. 4746. [Class 87 (ii).] A pipe c, preformed by winding material on to a roller, is placed in a mould and while still plastic is dehydrated and compressed by an internal roller b suitably loaded at the ends. Either the roller or the mould is rotated during the process, and the roller may be shouldered, as shown, when treating socketted pipes. Two rollers may be used acting on diametrically-opposite sides of the pipe.
Patent GB-790881-A (GB)
Title: Improvements in or relating to moulds for the production of articles of light-weight concrete or like plastic material
IPC: B28B1/50
Filed: 1956-02-15
Abstract: 790,881. Cutting concrete blocks. DUROX INTERNATIONAL SOC. ANON. Feb. 15 1956 [Feb. 15, 1955], No. 4751/56. Class 87(2) Concrete blocks cast in a mould are cut by the movement of strip cutters along slots arranged in the mould. The base and top of the mould, constructed to present rows of slots 14, 22 to allow the passage of cutting wires 28, may be either unitary structures, as in Fig. 1, or sectional, Fig. 5. The base structure in Fig. 1 is welded up from T-shaped members 12 inverted on a base plate 10 and leaving slots 14 between their flanges and channels 13 which accommodate rollers 30. A frame 11 also forms part of the base structure and to it are hinged side walls 2 and end walls (not shown). The top structure, which is less robust than the base, comprises inverted T-members 18 welded at their ends to transverse beams 19, providing the slots 22 and channels for rollers 30. In Fig. 5 separate sections 60, fabricated from two angle irons and a bar to comprise each a channel and slot, are supported by beams 63 and clamped together by members 64. From one end of a member 64 an arm 65 extends, through an opening in an outer section, and engages the inner wall of that section and at the other end is an ear 68 tapped to receive a screw-threaded rod 69 which is shaped centrally as a nut 70, the clamping resulting from the threads on the ends of the rod 69 being opposite handed. The cutting wires 28, Fig. 2, are anchored at one end to a rod 29, pass round the rollers 30, and are secured to a winding cylinder 33 which, when rotated by a crank 38, draws the wires through the concrete to cut it into slabs. In a modification the bottom roller 30 is replaced by a block slidable in the channel, to which the end of the wire is secured, or by a pin carrying rollers which run in the channel. In a further modification, Fig. 4, a holder 48 is secured to a pin 49 carrying ball bearings 50 which engage the upper wall of the channel 13, the front end 51 of the holder engaging the lower wall of the channel and the rear being connected to the wire 28 through a spring 53; alternatively the holder 48 is of spring steel. The spacing between the slots may be such as to enable combinations to be chosen suitable for cutting slabs of different standard thicknesses, for which purpose, in the Fig. 5 arrangement, blanks 73 may be inserted. To prevent the concrete from escaping through the slots 14 before it has set paraffin wax may be sprayed on the bottom of the mould before the concrete is poured in, or dry powder may be spread on the bottom to increase the viscosity of the bottom layer of the concrete, or strips of cuttable material may be placed in or over the slots, or, while the concrete is setting, the bottoms of the slots are covered bv inflated tubes placed in the channels so that the concrete will only fill up the slots. Paraffin wax also prevents adhesion of the block to the mould.
Patent GB-646917-A (GB)
Title: Benzene hexachloride and processes of making it
IPC: C07C17/02
Filed: 1945-03-09
Abstract: Benzene hexachloride, in a finely-divided, almost amorphous form, with a low melting point, is manufactured by treating benzene with chlorine in the presence of a catalyst which is or forms a compound with chlorine which does not liberate chlorine again under the conditions of the reaction, or in emulsion in a concentrated aqueous solution of a salt of a base, which base forms a compound with chlorine which does not liberate chlorine p  under the conditions of the reaction.  In examples: (1) chlorine is passed into benzene at 50-60 DEG  C. in daylight in the presence of a drop of mercury; (2) chlorine is passed into benzene, to which a saturated aqueous solution of sodium chloride has been added, at 55-70 DEG  C., in daylight.  Calcium chloride is specified as an alternative to sodium chloride.
Patent GB-343734-A (GB)
Title: Escapements for clocks and watches
IPC: G04B15/08
Filed: 1930-02-12
Abstract: 343,734. Watches and clocks. MURAYAMA, S., 94, Hayashi-Cho, Koishikawa-Ku, Tokio-Shi. Feb. 12, 1930, No. 4758, [Class 139.] Escapements.- An escapement comprises a scape wheel 1 with an endless zig - zag groove 3, the outside points 4 of this groove being squared, the groove coacting with a pallet 7 on a lever 6, pivoted at 8 and having a fork 9 coacting with a pin 12 on the centre of the balance wheel 10. A pin 14 beside the fork 9 co-operates with a notch 16 in a roller 15 on the balance staff 13. As the pallet 7 reaches each angle of the groove 3, the pallet is held whilst the pin 12 swings clear of fork 9, and notch 16 clear of pin 14. On the return swing of the balance, pin 12 and notch 16 unlock pallet 7 and it moves along another arm of the groove, whilst the scape wheel thus gives an impulse in both directions of swing of the balance. Figs. 1 and 2 show the balance wheel in different positions.
Patent GB-1219192-A (GB)
Title: Photocopy machine
IPC: G03G21/04
Filed: 1968-01-30
Abstract: 1,219,192. Electro-photographic apparatus. FITCHBURG PAPER CO. Jan.30, 1968 [Feb.3, 1967] No.4823/68. Headings G2C and G2H. In an electro-photographic machine, a meduim bearing data to be selectively copied is in the form of a paper web 11, which web carries indicia 11a corresponding to data 11b to 11c which is not to be copied. The indicia is sensed by mechanism 19 which transmits an electrical impulse to switch off a lamp 7 while the data 11b to 11c is passing an exposure station 6 so that the data is not imaged on to a web 2. For obtaining copies, the photo-conductively coated web 2 is electrostatically charged and then line-by-line exposed by a projection lens 9 to data on the web 11. The latent images are developed by cascading powder and carrier particles on to them and the images fixed by a heated drum 17. The indica 11a may be perforations or protrusions; conductive or non-conductive marks; light responsive marks; magnetic or non-magnetic marks; friction marks; dielectric marks on radio-active isotopes.
Patent GB-697945-A (GB)
Title: Improvements in or relating to material for use in electric discharge tubes
IPC: H01J7/18
Filed: 1952-02-25
Abstract: A material, which may be used in the preparation by a getter or an oxide coating of a cathode for an electric discharge device, is prepared by heating a mixture of 1 mol. of an alkaline earth metal oxide, 1-3 mols. of berylium oxide and 0.02-0.5 mol. of aluminium oxide.  The mixture may be heated to 1000 DEG C-1100 DEG C for one hour in hydrogen and then heated to 1200-1300 DEG C in a porcelain crucible for several hours; it is then crushed, mixed with an organic binder, and baked in a vacuum to 500-700 DEG C.  The amount of aluminium oxide determines the degree of water absorption of the material.
Patent GB-194517-A (GB)
Title: Improvements in and relating to cradles, cots, swings and the like
IPC: A47D9/02
Filed: 1922-02-18
Abstract: 194,517. Blinded Soldiers' & Sailors' After Care Organisation, and Mason, A. J. Feb. 18, 1922. Cradles.-A cradle, cot. swing or the like of the kind comprising two superposed frames connected together by netting is provided with clew ends 10, attached to the side netting adjacent to the top frames, and fitted in the rings 12 or like means for suspending the article. Preferably the side netting is made as a continuous strip. To attach the netting 3 to the top frame 1, a cord 5, Fig. 4, is run through the meshes and is bound to the frame by stitches 6 passing through holes 7. The meshes at the lower edge are drawn through holes 8, Fig. 5. in the bottom frame 2 and are secured bv a cord 9. When the bottom is of netting, it is attached to the frame 2 by stitches 11 passed up through the holes 8 and engaging the meshes 4. Preferably the clews 10 arepassed through the holes 7 and attached to the cord 5.
Patent GB-994493-A (GB)
Title: Tropine derivative
Inventor: TESTA EMILIO
IPC: C07D451/10
Filed: 1963-02-06
Abstract: The invention comprises tropinyl a -phenyl -a -hydroxymethyl - b  - hydroxy - propionate, and its preparation by reacting a -hydroxymethyl-a  - phenyl -b  - amino - propionic acid with an equal weight of sodium nitrite in dilute acetic and at about 0 DEG  C. to give a -hydroxymethyl-a -phenyl - b  - propiolactone, refluxing this product with dilute sodium hydroxide to give a  - hydroxymethyl - a - phenyl - b  - hydroxy-propionic acid, diacetylating this product, refluxing the diester formed with thionyl chloride to produce a -phenyl-a -acetoxymethyl-b -acetoxy-propionyl chloride, and melting this product at a temperature greater than 150 DEG  C. with an equimolecular quantity of anhydrous tropine hydrochloride to give the compound of the invention. 3-chloro-tropone is obtained as a by-product from the final stage of the above process.
Patent GB-137165-A (GB)
Title: Improvements in and relating to powder-puffs and face powder boxes or containers
IPC: A45D33/34
Filed: 1919-02-27
Abstract: 137,165. Mousley, F. Feb. 27, 1919. Pouches. - A container for face-powder is formed from rubber, leather, or other flexible material, and has a circular mouth A<1> adapted to be closed bv the back B of a powder-puff, which back is slightly larger than the mouth A<1>, and is also flexible. The body of the container is composed of a disk-shaped piece a and an annular piece a' secured together by stitching a<2>. The facepowder C may, as shown, be loose in the container; or it may be contained in a flexible receptacle having an openwork cover, such as is described in Specification 136,724.
Patent GB-365836-A (GB)
Title: Improvements in or relating to measuring devices for wearing apparel
IPC: A41H1/02
Filed: 1931-02-17
Abstract: 365,836. Tailors' measuring apparatus. CARACENI, D., 21, Via Boncompagni, Rome. Feb. 17, 1931, No. 5053. [Class 141.] An instrument for measuring the human form comprises a stand 2 having a telescopic section 3 which supports a measuring tape 10 and a protractor 6 of the form indicated. The protractor, which is shaped to fit under the armpit, is provided with a rigid scale 8 shaped to the back and with a tape measure 9 pivoted 'at 7. The tape 10 is carried by a slider 5 which is adjusted to the most hollow part of the wearer's side and clamped thereat. A similar sliding clamp 4 fixes the protractor under the armpit of the person being measured. The rod 3 is cranked as indicated to support the protractor in the required position. The application of the protractor and tape 9 is shown in Fig. 6 for mapping out important points on the front of the trunk by means of lengths and angles.
Patent GB-845645-A (GB)
Title: Bonded fibrous materials
Inventor: JONES GORDON KENNETH
IPC: D04H1/4218
Filed: 1958-02-17
Abstract: A suspension of sodium montmorillonite is prepared by vigorously stirring sodium montmorillonite exhibiting a base exchange comprising of 97 milliequivalents per 100 g. into water and adjusting the solid content to 7 g. of clay solids per 100 millitres of suspension. Lithium montmorillonite is prepared by base exchange from sodium montmorillonite by passage of a suspension of the latter over an ion exchange resin column previously saturated with lithium ions.  The solid content of the lithium montmorillonite suspension is adjusted to 7 g. of clay solids per 100 millilitre suspension after completion of the base exchange reaction by filtering off the requisite quantity of water from the suspension.  The above suspension of sodium and lithium montmorillonites are thixotropic.
Patent GB-1487793-A (GB)
Title: Exposure and fade-out control for electrostatic reproducing machines
IPC: G03G15/047
Filed: 1975-02-06
Abstract: 1487793 Electro-photographic copying machine XEROX CORP 6 Feb 1975 [22 Feb 1974]  5115/75 Heading G2H The machine comprises a photo-conductive belt 7 which is movable past means 13 to charge the belt, an imaging station A, a developing station B and an image transfer station C, the station A including an optical system 12 for projecting an image of an original 4 illuminated by lamps 3 on to the belt 7 and the optical system 12 being movable by a device 11 to provide desired size reductions of the image, and lamps 81 and 121 being automatically actuated in timed relationship with the lamps 3 and the belt 7 for discharging unwanted areas bordering the reduced image on the belt. In operation the required size of the image is selected by the operator at a control station 20 and the machine operates for a warm-up period during which the fuser assembly E heats up, a vacuum system (not shown) reaches operating pressure, the belt 7 is driven and the lamps 81 and 121 are turned on to ensure the belt is wiped clean.
Patent GB-852246-A (GB)
Title: Improvements in wheel rims suitable for heavy pneumatic-tyred vehicles
IPC: B60B21/02
Filed: 1957-02-14
Abstract: 852,246. Wheel rims. FISCHER A.G., G. Feb. 14, 1957 [Feb. 14, 1956], No. 5123/57. Class 144 (2). An extruded one-piece wheel rim comprises a well base bounded on one side by a hollow section 1 defined by a sidewall 4 of the well base, an inclined tyre bead seating flange 3, a rim mounting portion 5 which terminates radially inwardly of the axially outer edge of the flange 3, and a web 6 connecting said edge of the flange 3 with the end of the portion 5. As shown the portion 5 inclines radially inwardly and axially outwardly from the edge of the well base at an angle 8, and the web 6 is bowed towards the sidewall 4. An annular tyre-retaining rib 2 is formed at the junction of the web 6 with the flange 3. The other tyre bead receiving edge of the rim may be as shown, or may also be of hollow section. In an alternative embodiment, the web 6 of the hollow section 1 is bowed axially outwardly of the rim to define also the retaining rib 2.
Patent GB-656174-A (GB)
Title: Improvements in and relating to cathode ray apparatus
IPC: G01S7/06
Filed: 1947-02-21
Abstract: 656,174. Radiolocation. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Feb. 21, 1947, No. 5176. [Class 40 (vii)] In a radio pulse echo system employing a cathode-ray tube subjected to periodic deflection under the control of a multivibrator, means are provided for supplying synchronizing pulses either from the transmitter or, if the transmitter be not operating, from the rectifier circuit of the alternating current supply for the cathode-ray tube. In Fig. 10, pulse transmitter 10 co-operates with a receiver 14, the received echo pulses being displayed on cathoderay tube 19. Multivibrator 1, 2 which triggers the sweep generator 8 together with a blanking circuit 50 and step-strobe generator 43, 48, all of conventional design, may be synchronized either from the transmitter by positive pulses applied via switch 28 or from negative pulses derived from the tube supply rectifier circuit 52, 53 and applied via switch 62.
Patent GB-367177-A (GB)
Title: Improved tin opener
IPC: B67B7/70
Filed: 1931-02-19
Abstract: 367,177. Tin openers. FYFE-LUMSDEN, Ltd. and HANSON, A. H., Lane End, Eccles, Lancashire. Feb. 19, 1931, No. 5211. [Class 66.] A device for opening tins by cutting off the ends comprises a baseplate b fixedly or detachably secured to a support and carrying on the underside a cutter wheel c and also a milled wheel d adapted to engage the inside of the rim of the tin. The cutter is spaced from the plate by a movable washer c<4> against which bears a spring c<5>, to allow for variation in the thickness of flanges of the tins. The milled wheel is secured by a stud f formed with a flat to a cam e, Fig. 9, disposed above the plate and formed with a recess e<1> adapted to engage a stud i projecting from the plate ; the stud f, which carries also the operating lever g, furnished with a handle g<1>, can rest in either lobe of a kidney-shaped slot b<2>, Fig. 7, cut in the plate. To open a tin the stud f is placed in lobe b<3> of the cam slot, in which position the cam recess e<1> engages the stud i. The tin being placed in position, the handle is turned causing the cam to revolve until the convex edge e<2> engages the stud, forcing the milled wheel d into engagement with the rim, and causing the stud to move into the other lobe b<4>, when the cutter c comes into operation to remove the end of the tin.
Patent GB-1526921-A (GB)
Title: Apparatus for use in controlling the deflection of a light beam
IPC: G02B26/10
Filed: 1976-02-11
Abstract: 1526921 Automatic control, laser beam deflecting arrangement WESTINGHOUSE ELECTRIC CORP 11 Feb 1976 [28 Feb 1975] 5247/76 Headings G2J and G3N Control. A weapons laser guidance system comprises a central processor 24 which controls a beam deflection arrangement 12 depicted in Fig. 5 by means of which the laser beam is directed towards the target, the weapon following the reflected radiation to the target. Up to six weapons may be deployed simultaneously, the directing beams being modulated at 26 with suitable codes to avoid interference. The mirrors also receive reflected radiation and the range of the target is computed at 18 from the "echo" time for correlation with previous and subsequent ranges. Target and weapon tracks are superimposed on a T.V. picture of the target area 14, 20 for operator control. Laser beam deflection. The deflection arrangement comprises a series of mirrors 34-34d each movable between two positions about each of two orthogonal axes. Each successive mirror in one (deflecting) position provides a deflection twice that of the previous one so that by selection of suitable mirrors any beam direction within a predetermined square solid angle may be achieved, in unit steps of the minimum deflection. This is conveniently made equal to the angular dimension of the beam. The mirrors are moved mechanically by a pair of solenoids each having a "rest" and an "energized" position and mounted one upon the other or in gimbals with actuation axes orthogonal. Actuation rates of 60 times a second are achieved.
Patent GB-525295-A (GB)
Title: Improvements in or relating to hair-dryers
IPC: A45D20/06
Filed: 1939-02-17
Abstract: 525,295. Hair-drying appliances. VARADI, D., and REICH, I. Feb. 17, 1939, No. 5272. Convention date, March 19, 1938. [Class 81 (ii)] An hair-drying hood 1, provided with an air circulating fan 2, has secured thereto a casing 9 through which passes a tube or tubes 7 the ends of which open respectively into the hood 1 in front of the fan, and into a compartment 5 of the hood at the rear of the fan, the tube or tubes being heated by a non-electrical heater 8 in the casing. The heater may consist of one or more burners supplied with gas or liquid fuel, and may be fitted with a pilot jet 14. The casing 9 may be faced internally and externally with insulating material 10. The compartment 5 may be surrounded by an electric heater 15.