baber/WOPTO huggingface dataset:
Patent GB-871421-A (GB)
Title: Method for preparing a contact mass to be employed in the synthesis of a vinylester
IPC: B01J8/24
Filed: 1959-07-15
Abstract: Vinyl acetate or vinyl chloride are prepared by a vinylation reaction using a catalyst made by passing zinc acetate or mercuric chloride respectively in the vapour state through a fluidised bed of activated carbon particles maintained throughout at a temperature between the sublimation and melting points of the zinc acetate or mercuric chloride.  The fluidisation may be effected by (a) an inert gas or (b) acetylene with or without the respective reactants, i.e. acetic acid or hydrogen chloride. Thus catalyst formation and vinylation may be effected simultaneously.ALSO:Catalysts for the synthesis of vinyl acetate or vinyl chloride are prepared by passing zinc acetate or mercuric chloride respectively in the vapour state through a fluidised bed of activated carbon particles maintained throughout at a temperature between the sublimation and melting points of the zinc acetate or mercuric chloride.  The fluidisation may be effected by (a) an inert gas or (b) acetylene with or without the respective reactants, i.e. acetic acid or hydrogen chloride.  The method of the invention can also be applied to regenerate active carbon particles obtained from a catalyst which has lost its activity.
Patent GB-661665-A (GB)
Title: Velocity modulation wide band amplifier tubes
IPC: H01J25/16
Filed: 1948-09-17
Abstract: 661,665. Velocity-modulated tubes. STANDARD TELEPHONES & CABLES, Ltd. Sept. 17, 1948 [Sept. 26, 1947], No. 24409/48. Class 39 (i). A velocity modulated amplifier tube, Fig. 1, comprises an electron gun 3, buncher resonator 4, drift tube 14, catcher resonator 8 and collector electrode 11, the buncher and catcher resonators and collector electrode being provided respectively with cooling fins 5, 10 and 12. The drift tube 14 which may be cylindrical, as shown, or of any other appropriate shape, is supported by insulating rods such as 13. Input and output coupling means are provided by coaxial cables 7 and 9. Each resonator comprises two coaxial conductors 15 and 16, Fig. 2, having their axis perpendicular to the axis 17 of the electron beam. The outer conductor 15 has conical openings 18 and 19, the inner ends of which are spaced a distance equal to that traversed by the electrons in one quarter of a high frequency period, from a cylindrical opening 20, in the inner conductor 16, the length of which is equal to the same distance. The conductors 15 and 16 are short-circuited at one end 24, a distance of one quarter wavelength from the electron beam axis 17. At the other end, the outer conductor 15 is screwed into a member 27 provided with radiating fins 28, which is sealed to the glass envelope 29. Also screwed into member 27 and welded thereto at 32 is a cylindrical hollow closure member 25 provided with a piston which is adapted to tune the resonator to be effectively one wavelength long. The inner end 30 of member 25 is sealed to a glass member 31 which is sealed about the inner conductor 16 of the resonator. The closure member 25 also accommodates a coupling loop (not shown), connected to the input coaxial line 7 or to the output line 9 of Fig. 1.
Patent GB-1511357-A (GB)
Title: Heat indicators
IPC: G01K11/12
Filed: 1976-06-03
Abstract: 1511357 Heat/temperature indicators DEFENCE SECRETARY OF STATE FOR 3 June 1976 [6 June 1975] 24508/75 Heading G1D An indicator comprises an insulated heat sink 1 having on it a plurality of temperature-sensitive paints responsive to indicate the maximum temperature attained by the sink. The heat sink 1 is a frusto-conical shape piece of lead mounted on an insulating base 3, with an insulating cap 2 and one surface 5 exposed; eight recesses 10 hold temperature sensitive paints. In use, heat, e.g. a onesecond radiation pulse, incident on the surface 6, raises the temperature of the heat sink to a value determined by subsequent inspection of the paint. A slot 8 in the base and gaps in the sink allow any volatile components of the paint to escape.
Patent GB-1263158-A (GB)
Title: Improvements in or relating to ignition systems
IPC: F02P1/08
Filed: 1969-05-14
Abstract: 1,263,158. Ignition systems. TECUMSEH PRODUCTS CO. May 14, 1969 [May 15, 1968], No.24558/69. Heading F1B . An ignition system comprises circuit means adapted to transfer electrical energy from a source of electrical energy 28 to an ignition spark gap 72 at a first predetermined time in a timing cycle of the engine when the engine is operating at running speeds and at a second predetermined time in the timing cycle when the engine is cranked at low speeds during starting, the energy transferring circuit means comprising an electron control device 74 having a pair of output terminals and a pair of input terminals and being responsive to an electrical signal having a predetermined value applied to the input terminals to switch the control device to a first state of conduction and thereby cause electrical energy to be transferred to the spark gap and ignition timing circuit means 42 coupled to the input terminals and operable during each engine cycle at the running speeds and at the cranking speeds to provide a timing signal which includes at least first and second signal pulsations having a relative phase displacement therebetween correlated to the time displacement between the first and second predetermined times in the engine cycle. One of the pulsations is correlated to the second predetermined time and has an amplitude exceeding the predetermined value at cranking speeds to thereby cause energy to be transferred from the source to the spark gap at the second predetermined time. The timing circuit means further comprises first electrical circuit means 84 responsive to one portion of the other pulsation at running speeds to develop a timing shift signal and second circuit means for combining at least a portion of the other pulsation and the timing shift signal so that at running speeds the combined signal exceeds the predetermined value to cause energy to be transferred from the source to the spark gap at the first predetermined time. A number of modifications of the triggering circuit are described. Specification 1, 247, 739 is referred to.
Patent GB-139735-A (GB)
Title: Improvements relating to rope transmission for lifts and the like
IPC: B66D1/74
Filed: 1919-10-09
Abstract: 139,735. Waygood-Otis, Ltd., (Otis Elevator Co.). Oct. 9, 1919. Pulleys.-In rope transmission for lifts and the like, the sides of the groove in the driving-sheave are arranged in sections having varying angles of convergence, in order that the rope may be pinched in the groove and the traction maintained practically constant notwithstanding the wear of the sheave and the rope. As shown in Fig. 5, the upper part of the groove is so shaped that, in the original position, The rope makes contact over the arcs lm and on, and the lower part of the groove is so proportioned, according to the wear of the sheave and rope, that these arcs of contact and the consequent tractive force are maintained constant during the life of the sheave and rope.
Patent GB-971064-A (GB)
Title: Method of and apparatus for making ice-cream
IPC: A23G9/12
Filed: 1963-06-21
Abstract: 971,064. Ice-cream. E G. IRWIN. June 21, 1963, No. 24805/63. Heading A2B. In making ice-cream in the freezing compartment of a refrigerator, an open-topped container holding an ice-cream mix is placed in the said compartment, the mix is then agitated or stirred and the ambient air is simultaneously circulated. Apparatus for making ice-cream according to the invention comprises an open-topped bowl 36, Figs. 1 and 2, holding an icecream mix 35, a casing 10 supported on but not completely closing the mouth of the bowl and housing an electric motor 28 actuated by current from batteries 27 or from supply mains. A spindle 33, connected to the drive shaft of the motor, extends downwardly from the casing and carries, at its lower end disposed in the mix, a stirrer 34 and, in the air above the mix, a propeller or fan 39. The stirrer 34 is, preferably, a friction fit on the free end of the shaft 33, so that the stirrer can be adjusted to suit the depth of the mix in the bowl and the shaft 33 can still turn if the stirrer is seized in the ice-cream. A switch 29 is provided at one end of the casing. The casing 10 may be made of plastic material and may comprise a cover 12, 32 and a base 11 provided with a housing 21 for the motor, upstanding ribs 25 and depending lugs 15. The spindle 33 and the stirrer 34 may be made of nylon or polypropylene. Heat-insulating blocks 26 30 and 31, e.g. of expanded polystyrene, may be fitted inside the casing to prevent freezing of the batteries.
Patent GB-244554-A (GB)
Title: Improvements in transmitting mechanism for vacuum brakes
IPC: B60T13/46
Filed: 1924-10-18
Abstract: 244,554. Curtis, J. N. Oct. 18, 1924. Force-transmitting mechanism for vacuum brakes of the type described in Specification 210,222, wherein an extra arm on the brake shaft at right angles to the pull rod arm is connected by links to the end of the pull rod, comprises a looped pull rod to accommodate freely the pull rod arm B, the end of the pull rod having a suitably inclined slot with a recess for holding a steel roller G on the pin F of the link E connecting the extra arm C with the pull rod. The lever A on the brake shaft, when pulled on by the brake piston rod, rotates the bell crank .]i, C, clockwise and arm B acts on a roller H on a pin J in the loop of the pull rod to move the latter to the right to apply the brakes. The link E is formed of two flat plates between which is pivoted at L a rod M passing freely through a hole in a plate K having a spigot K<1> engaging loosely between the plates and at its lower end co-operating with a nose C<1> of the extra arm. A spring N is positioned between the plate K and a nut and washer on rod M. As the pull rod moves to the right to apply the brakes the link E pulls down the end of the pull rod so that the roller H ridea down the curved face of the pull rod arm B thus giving the desired variation in leverage as the brakes are applied. In a modification the pull rod is below the arm A and the brake shaft, the extra arm C is in one with the arm A and the member K is modified so as to press upwards normally on the arm A to take some of the weight of the pull rod.
Patent GB-837545-A (GB)
Title: Improvements in the preparation of planographic plates
Inventor: JNR MEYER LOUIS SUGARMAN
IPC: G03G9/08
Filed: 1955-08-30
Abstract: 837,545. Photo-mechanical printing surfaces. RADIO CORPORATION OF AMERICA. Aug. 30, 1955, No. 24904/55. Drawings to Specification. Class 98(2) [Also in Group XVI] In the preparation of planographic printing plates a paper, synthetic resin, metal or other backing (e.g. a high wet-strength paper loaded with carbon black for good electrical conductivity) is coated directly, or over an undercoat, with a photoconductor suspended in a dielectric film-forming vehicle; a fixed powder image is electrostatically produced thereon; and the non-image areas are chemically treated, in a manner not affecting the powder image, to provide a hydrophilic material solely in said areas. The powder image is preferably hydrophobic. The powder image may be produced as described in Specification 775,812, and the hydrophilic areas by (a) chemical conversion or (b) hydrolyzation of the coating, or by (c) removing it (as in Specification 775,812) to expose the hydrophilic backing or a previously applied hydrophilic layer. In method (a) a coating formed from photo-conductive zinc oxide, a specified silicone resin, and toluene, is made hydrophilic by washing with a solution of (i) a water-soluble bivalent metal salt such as an acetate, nitrate, chloride or formate of barium, cadmium, calcium, cobalt, copper, iron, lead, magnesium, nickel, strontium, zinc, or any other bivalent metal of Group I, II, IV, VII and VIII of the Periodic Table,. of which the aqueous salt solution is stable; an example is: zinc acetate 20 gms., water 80 ml., ethyl alcohol 20 ml.; or (ii) a water-soluble multi-valent metal formate or acetate with a water-soluble alkaline metal or ammonium formate or acetate; an example is: zirconyl acetate 15, sodium acetate 5, butanol 2, 40% formaldehyde 1 (gms.), water 77 ml. In method (b) the coating vehicle may be hydrolyzable to make it hydrophilic, e.g. it may be cellulose ester, cellulose acetate, cellulose acetate butyrate, or cellulose acetate propionate, an example of a coating material is: zinc oxide 96 gms., low viscosity cellulose acetate 38 gms., acetone 300 ml., methyl "Cellosolve" (Registered Trade Mark) 300 ml. The hydrolyzing solution may be: sodium hydroxide 50 gms., ethyl alcohol 400 ml., and water to make up to 1 litre.
Patent GB-188146-A (GB)
Title: Improved means for securing umbrellas and other articles to attache cases and the like
IPC: F16K35/06
Filed: 1921-09-20
Abstract: 188,146. Woodford, J., and Newman, W. C. Sept. 20, 1921. Parcel and like carriers. -Straps b, c, provided with buckles and connected to a cross-strap a, are fitted with swivel rings carrying spring-hooks by means of which the device, which serves for carrying umbrellas or other articles, may be attached to the handle rings of an attachÚ case &c.
Patent GB-947318-A (GB)
Title: Improvements in mechanical couplings for tubular elements
IPC: F16L37/23
Filed: 1960-07-18
Abstract: 947,318. Pipe joints. ELECTRISCHE APPARATENEN METAALWARENFABRIEKEN RUDOLF BLIK N.V. April 18, 1960 [July 20, 1959], No. 24955/60. Heading F2G. A coupling for tubular elements comprises an inner element 19, Fig. 2, with a hole or depression 20 and fitting in an outer element 1, Fig. 1, surrounded by a ring 5 which accommodates a spring-loaded wedge 6 bearing on a member 3 e.g. a ball or roller whereby the member 3 is held projecting through the holes 2, 20 to secure the inner element in position. The inner element is released by movement of the protruding control member 11 to the right. The tubular element 1 has an edge formed at 15 to retain the ring 5 and is secured to a vacuum cleaner casing 14 which is provided with a guiding and protecting ring 18.
Patent GB-1428405-A (GB)
Title: Electro-acoustic transducers
IPC: H04R9/00
Filed: 1972-05-26
Abstract: 1428405 Electromagnetic transducers RANK ORGANISATION Ltd 3 May 1973 [26 May 1972] 24960/72 Heading H4J An electroacoustic transducer has two frame members 1 (Figs. 1, 2) preferably of polystyrene, each having an upstanding peripheral wall 4. A non-magnetic diaphragm 5 (Fig. 3) (e.g. of "MELINEX" (Registered Trade Mark) carrying a conductor 6 having parallel strip portions is located between and separates the frame members 1. The walls 4 of the frame members 1 project away from one another. Two magnet arrangements 7 rest on respective inwardly directed flanges 3 of the frame members 1. Each magnet arrangement 7 has parallel, spaced elongate magnet poles facing the diaphragm 5. The poles are aligned with the spaces between the strips of conductor 6 and adjacent poles are of opposite polarity. On each side a perforated backing sheet 9, e.g. of cadmium plated mild steel, contacts that face of the magnet arrangement 7 remote from the diaphragm 5. All the components are clamped together along at least two sides of the frame members 1. Several different diaphragms may be interposed between the frame members 1. Each magnet arrangement 7 preferably incorporates a perforated sheet of material consisting of magnetic particles embedded in a matrix of non-magnetic material. Alternatively each magnet arrangement consists of a plurality of strips of such material. The sheet or individual strips may be formed of stacked laminations. Each frame member 1 has pins 10 extending through holes in the other frame member, the ends of the pins 10 (Fig. 4) being deformed to form rivet heads clamping the assembly together. Gaps 3B in the frame flanges house a plug to connect to the ends of the conductor 6. Alternatively the ends of the conductor 6 may project beyond the confines of the frame member 1. In an alternative construction (Figs. 5 to 8, not shown), two opposite upstanding flanges 4 of each frame member 1 are bent inwardly to hold the magnet arrangement in place and the outer edges of adjacent faces of the frame members 4 are heat fused to one another (e.g. at an outwardly projecting lip) with the diaphragm 5 held between the members 4. In this arrangement the diaphragm 5 is gripped at two opposite edges only.
Patent GB-802132-A (GB)
Title: Insulated electrical connector
IPC: H01R4/20
Filed: 1956-08-15
Abstract: 802,132. Wire terminals; sleeve couplings. AMP, Inc. Aug. 15, 1956 [Aug. 30, 1955], No. 24973/56. Class 38 (1). The ferrule 10 of a terminal connector to be crimped on to a wire has serrations 18 in part of its outer surface so as to retain a fibrous refractory insulating sleeve 12 (e.g. of.asbestos) which is a friction fit on the ferrule and has serrations 20 formed therein by the ferrule. A metal sleeve 14 surrounds sleeve 12 and has a constricted port to be engaged by a crimping tool defined by shoulders 24, 26. The sleeves 12, 14 may extend over the cable insulation to support it. In the embodiment of Fig. 5, the ferrule 10<SP>11</SP> has square-threaded serrations. The connector may be in the form of a sleeve connector for two cables.
Patent GB-250023-A (GB)
Abstract: 250,023. Godefroid, A. April 9, 1925. Coins, separating and sorting.-In a coin-sorting device for cash registers in which the, coins are placed side by side on a board 1, Fig. 1, and are tilted therefrom on to a. conveying tape 4 which travels under a glass plate and delivers the coins to sorting gutters, several gutters 13 are provided the admission chutes 12 of which extend next to one another over the entire width of the tape 4 so that each gutter 13 receives only one or at most two coins. The. gutters 13 cross each other in the machine, as shown in Fig. 2, and are provided with a series of differently-sized openings 14 at successively increasing heights through which the coins drop according to their diameters, coins accidentally non-sorted passing out at the ends. Each opening 14 communicates by a. chute 15 with its appropriate annular compartment in a stationary disc 16. from which the coins are swept into the compartments of the cash-drawer 19, through openings 20 in the disc, by a rotary member 21 disposed above the disc 16 and provided with sweeping arms or brushes 23 projecting into the compartments of the disc 16. The member 21 is operated by opening the drawer 19 through a rack 24 secured thereto and gearing 25 - - 29, the rotation ceasing as soon as the end of the drawer passes the first opening 20. In a modification of the conveying apparatus, the disc 31, Fig. 8, divided into annular compartments, is adapted to be rotated by the drawer 19 through gearing 24 - - 29, and the brushes 38 are secured to a fixed bar 37, the coins being held back by the brushes 38 and dropping into the drawer 19 through openings 33 normally closed by pivoted members 34, each having an arm 33 weighted at 36. The members 34 are rocked to uncover the openings 33 by the engagement of the arms 35 with the bar 37. In a further modification of the conveying apparatus, a rotary frame 41, Fig. 9, is driven from the drawer 40 by racks 49, 53, gearing 51, 52 and a one-way clutch, and is divided by radial walls 42, the bottom of each compartment consisting of a sector 43, Fig. 10, mounted to rotate on a radial shaft 44. Each shaft 44 projects to a. different length beyond the circumference of the frame 41 and is cranked downwardly at 46 and weighted at 47. thus normally holding the member 43 closed. The chutes. 15 are closed by spring-controlled members 54. Fig. 12, and the coins are retained therein until the proper compartment of the frame 41 is in position underneath, when an arm 57 on the partition 42 engages the arm 55 of the member 54 and opens the chute 15. The coins are discharged from the sectors of the frame 41 into the compartments of the drawer 40 by the rocking of the member 43 on its shaft 44 through contact between the cranked member 46 and an appropriate stop 48 on the drawer 40. Alternatively, the distributing device may consist of suitable guides which connect the openings 14 of each gutter 13 directly with the corresponding compartment of the cash drawer.
Patent GB-1224122-A (GB)
Title: Locking system for compressed-air brakes in motor vehicles
Inventor: GACHOT JEAN
IPC: B60T13/36
Filed: 1969-05-16
Abstract: 1,224,122. Preventing unauthorized operation of vehicles. J. GACHOT. 16 May, 1969 [17 May, 1968], No. 25022/69. Heading B7J. [Also in Division F2] In a vehicle having a compressed air braking system in which the brakes are locked or released by means of an operating box 19 having a lever 97 operating valves by engagement with domes 95, an anti-theft device 181 comprising a locking lug 182 operated by means of a key 183 is secured to the casing of the box 19 and in the anti-theft position the lug 182 bears on the runner wheel 96 of the lever 97 to prevent the lever being moved into the brake release position.
Patent GB-229604-A (GB)
Title: Improvements relating to the projection of stationary or animated pictures on opaquesurfaces
IPC: G03B21/06
Filed: 1924-10-22
Abstract: 229,604. Lehwess, E. E., (Naamlooze Vennootschap Projectie Licht Uitvinding Syndicaat). Oct. 22, 1924. Optical-projection apparatus; kinematograph apparatus. - Stationary or animated images are projected from opaque films or the like by light which is directed symmetrically thereon at an angle from a number of sources, the film &c. being highly glazed or shiny so that light reflected by the black parts of the image is reflected at an angle corresponding to the angle of incidence and does not pass through the objective to the screen; the shutter, when placed between the gate and the objective, may have highly glazed or shiny blades, the film in the gate may have pressure exerted over its whole surface. and means for cooling the apparatus may be provided. As shown in Fig. 4, light from two filament lamps 16 is directed by reflectors 18, and condensers 17, 19, symmetrically and at an angle, on to a film. The filaments are parallel to the condensers 17 and the reflectors 18 are arranged to produce images of the filaments between the actual filaments. Each condenser 19 is placed between the apex of the light beam and the focal point of the condenser 17. Each lamp may be carried by a support capable of being raised, lowered, and moved laterally, and each reflector 18 may be silvered on its rear surface and carried by a mounting 23 slidable in a sleeve 24 which is adjustably secured to the lamp housing 22 by bolts, nuts, spring, and lugs. The rear surface of each reflector may be exposed to the air so as to prevent overheating, and each lamp house may have side walls consisting of V-shaped venetian shutters. The sources of light may consist of arc lamps or oxy-hydrogen lamps and be used without the condensers 17, 19. Fig. 1 shows a construction of projector in which the film passes from a spool 1 over the upper part of a sprocket 4 to the gate 6, and thence round a centring roller 9, an intermittent sprocket 10, and the lower part of the sprocket 4, to a take-up spool 12, pressure rollers 3, 5, 38, 39 being provided in connection with the sprocket 4. The shaft 13 of a motor 14 carries worms 41, 42 driving respectively a maltese-cross mechanism and the sprocket 4, and also drives a shutter 15. The centring roller 9 is carried by a sliding frame 31, movable vertically through a rack and pinion by a lever 33. The gate carries an objective 30 the tube of which has apertures 30<a> for the illuminating beams, and comprises a hinged flap 7 carrying a spring-mounted plate bearing against the whole surface of the film. The flap may be provided with ribs &c. to dissipate heat. An aperture plate 8, Fig. 3, is movably mounted in the gate and is provided with pieces of velvet 8<a>, 8<b>, cut so as to leave the film margins free, and secured by means of an adhesive and straps 8<c>, 8<d>.