baber/WOPTO huggingface dataset:
Patent GB-1381465-A (GB)
Title: Camera shutter
IPC: G03B9/36
Filed: 1973-03-28
Abstract: 1381465 Shutter mechanism SEIKO KOKI K K 28 March 1973 [28 March 1972] 14913/73 Heading G2A A focal plane shutter comprises a group of shutter-opening blades and a group of shutterclosing blades, each group comprising a slitforming blade and a plurality of non-slit-forming blades and having a primary operating lever for all the blades and an auxiliary operating lever for the slit-forming blade, the primary and auxiliary operating levers forming a parallelogram linkage with the slit-forming blade, each non-slit-forming blade having a pin-and-slot connection with the primary operating lever and one of the non-slitforming blades being pivotally connected to the slit-forming blade. Blade groups 5 and 9 of similarly constructed and operated shutteropening and -closing blades are situated between frame members forming a window 2. Blade group 5 (shown in the closed position) comprises a slitforming blade 5a having pivots 5g and 5h forming a parallelogram linkage with a primary operating lever 3 pivoted at 3a and an auxiliary operating lever 4 pivoted at 4a. Lever 3 has a pin-and slot connection with a first non-slit-forming blade 5b which is pivotally connected to the slit-forming blade at 5h (as shown) or at another point (13), Fig.5 (not shown) and with further non-slitforming blades 5c-e having a common fixed pivot 6. Pivot 6 may be dispensed with, blades 5c-e being pivotally connected in series to blade 5b.
Patent GB-137008-A (GB)
Title: Air Cooled Sparking Plugs.
Inventor: PINESCHI LAMBERTO
IPC: H01T13/16
Filed: 1919-06-13
Abstract: 137,008. Pineschi, L. June 13, 1919. Sparking-plugs. - Air is drawn on the suction stroke through the central electrode 9 past an automatic valve 13. The earthed terminal 5 is carried by an inwardly projecting domed member 3 having perforations 4, the shape of this member in conjunction with the dished inner end of the fitting 19 into which open the passages 17 resulting in the scavenging both of the terminals and the surfaces adjacent thereto including the walls of the combustion chamber of the plug. The valve seating 11 is formed in a cap 8' which screws over the nut 8 on the electrode.
Patent GB-483889-A (GB)
Title: Improvements in and relating to electric circuit breakers having arc-extinguishing provision
IPC: H01H9/44
Filed: 1937-05-29
Abstract: 483,889. Heavy - current switches. BRITISH THOMSON-HOUSTON CO., Ltd. May 29, 1937, No. 14967. Convention date, May 29, 1936. [Class 38 (v)] A circuit-breaker comprises a substantially gas-tight compression chamber 12 having walls of pressure-resistant material, as steel, surrounding a pair of relatively-movable contacts 21, 23, and an annular gas-evolving member 20 disposed within the chamber adjacent the point of separation of the contacts, and formed of a material capable of evolving substantial quantities of gas when exposed to an arc. The members 20 is positioned between annular spacers 19 of steel or other heatresisting material which does not evolve gas in quantities. The spacers 19 engage annular members 15, between which and the bushings 13 of moulded insulation are sealing washers 16, 17 and a guard 18, preferably of soft copper. Peripheral parts 14 on the bushings 13 provide a tight seal between the latter and the chamber 12. To protect the bushings 13 from the arc, the members 15 are of heat-resisting material and have extensions 24 closely fitting the contacts 21, 23. A suitable material for member 20, and preferably also for members 15, is kerosene-free fibre, preferably made from cotton cellulose treated with zinc chloride which is later washed out until less than 0À02 per cent remains. The movable contact 23 is reciprocally moved into and out of contact with 21 by mechanism of the character disclosed in Specification 450,012. Specification 420,042 also is referred to.
Patent GB-592942-A (GB)
Title: Antenna construction
IPC: H01Q5/00
Filed: 1944-08-04
Abstract: 592,942. Aerials. STANDARD TELEPHONES & CABLES, Ltd. Aug. 4, 1944, No. 14972. Convention date, Sept. 30, 1942. [Class 40 (v)] A vertical antenna structure consists of a conductive mast surrounded by two radiating elements, one disposed a short distance above the other, with the mast extending above the upper end of the upper element to ensure that the effects of the mast on the impedance of each radiating element are similar. As shown in Fig. 1, a hollow conductive mast 14 supports two cylindrical radiators 10 and 12, the top of the mast 14 extending a few inches above the top of the upper radiator 10. The radiators 10 and 12 are fed by a transmission line 18 extending through the mast and through an opening 22 between the said radiators. The transmission line 18 may comprise a series of tapering sections 26 forming an aperiodic impedance transformer, or it may be an ordinary line, suitable impedance matching precautions being taken. Fig. 2 shows a modification in which the radiators 41, 42 each comprise telescoping sections 43 and 44. The inner sections 43 each comprise a twelve-sided tubular member composed of three pieces of stamped sheet metal secured together at the flanged edges 46 by soldering, brazing, welding, &c. The upper end of the telescoping section 43 is secured to the mast 40 by means of an annular insulator 54 bolted to a supporting ring 55 fixed to the mast and having a peripheral ring 56 to which the upper edge of the section 43 may be welded. The lower end of the said section 43 is secured to the mast by means of an annular insulator 50.. The connections between the radiators 41, 42 and the transmission line 70 are made through sealed openings in the mast comprising short ducts closed by an insulating cover, Fig. 4 (not shown). The radiating elements are preferably so proportioned as to present a low impedance, e.g. 400 ohms or less as viewed from the transmission line end and preferably each of the said elements is one half of a wavelength long although they may be much shorter, e.g. one tenth of a wavelength.
Patent GB-110406-A (GB)
Title: Improvements in or relating to Liquid-measuring Apparatus.
Inventor: SHAH MAFATLAL KESHAVLAL
IPC: G01F11/02
Filed: 1916-10-21
Abstract: 110,406. Shah, M. K. Oct. 21, 1916 Fixed-chamber apparatus for liquids; full-stroke arrangements for; varying quantity measured in.-Apparatus for filling vessels with measured quantities of liquids comprises a measuring- cylinder a connected through a manually operated three-way cock c with a supply pipe d and a discharge pipe c. A piston in the measuring-cylinder is raised by the pressure of the liquid until it meets adjustable stops in the cover, whereby the quantity measured is determined, and strikes a loose pin x so as to move a lever z and a slide o. This slide actuates locking-pawls m, n adapted to engage notches in a washer l on the plug cock, so as to prevent movement of the cock until the piston reaches the end of its stroke. In the downward movement of the piston, a collar on the piston-rod strikes the end of the lever z to reverse the pawls. A counter u is actuated by a quadrant s receiving oscillatory motion from a piston in a cylinder q communicating freely with the measuring-cylinder. A movable nozzle f is connected by a link g with the cock c, and is lowered into the vessel to be filled when the cock is moved to the discharge position, thereby holding the vessel firmly on its support.
Patent GB-563960-A (GB)
Title: Improvements in or relating to the production of textile and other products from polyvinyl esters
IPC: D01F6/14
Filed: 1942-11-21
Abstract: Artificial filaments, foils and similar articles which swell or dissolve in water are produced by extruding into a setting medium a solution of a polyvinyl ester containing free hydroxyl groups in which the ester group content is between 2 and 12 per cent of the maximum theoretically possible.  The setting medium may comprise a water-miscible organic non-solvent for the ester, such as acetone or lower aliphatic ketones or alcohols, and the polyvinyl compound may comprise partially saponified polyvinyl acetate.  The solution of polyvinyl ester in cold or hot water may be forced through orifices of 0.05 to 0.08 mm. diameter and the filaments so formed passed through the setting medium for a distance of 6 to 12 feet. After setting the yarn is twisted and wound, but it is preferably first stretched in a steam chamber at 100 DEG  C., after which it is allowed to remain on the bobbin for 12 to 24 hours to set.  In an example, polyvinyl acetate made by saponifying polyvinyl acetate of 100 per cent acetate content in a medium containing 3 per cent of water and 97 per cent of methyl alcohol at about 50 DEG  C. so as to produce a partially saponified polyvinyl acetate containing 11 per cent of the theoretically possible quantity of acetate groups is heated with water until the polyvinyl acetate has dissolved and the methyl alcohol and methyl acetate boiled off.  The solution is filtered and spun into acetone at room temperature, the length of immersion being about 10 feet.  The yarn produced is immersed in acetone for 12 hours, then stretched to three times its original length while passing through wet steam at 100 DEG  C., and finally aged for 24 hours in air.  Specifications 482,216 and 563,991 are referred to.
Patent GB-500926-A (GB)
Title: Improvements in or relating to a method of and means for moulding pipes or like hollow bodies
IPC: B28B1/52
Filed: 1938-05-20
Abstract: 500,926. Moulding pipes &c. DEUTSCHE EISENWERKE AKT.-GES. May 20, 1938, No. 15057. Convention date, May 20, 1937. [Class 87 (ii)] In moulding pipes or like hollow articles, cement, concrete or like material is continuously introduced into a mould 2 in a dry or slightly moist condition and simultaneously the setting liquid is continuously and independently introduced into the mould and the materials are continuously compressed by a core and pressure screw 3 correspondingly to their supply. The liquid may be fed through channels 6, 8 in the screw 3 to points below screw segments 4, 5 or through holes in the segments themselves. A reinforcing wire or band may be fed into the material through a hole in the segment 4 and along a groove 11, being finally guided by a knurled or toothed roller 13. The segment 5 may also be provided with a roller. The screw segments may be offset vertically so that the higher one compresses material on to the reinforcement. The mould may alternatively be lined with a tubular wirenetting reinforcement of diameter greater than that of the screw 3. The screw 3 may he extended to form a smoothing core 15 which may be provided with a perforated tube 16 whereby excess liquid can escape and heat can be introduced to accelerate setting. The mould may be lined with a longitudinallyslotted tube 1 of lead or other metal and having overlapping edges. The tube 1 is removed with the pipe and serves to support it during hardening, being secured by clamps or by ropes wound round it.
Patent GB-1153471-A (GB)
Title: Antiprotozoal 8-Aminoquinoline Derivatives
Inventor: WALLS LESLIE PERCY
IPC: C07D215/40
Filed: 1965-04-09
Abstract: 1,153,471. Piperazine derivatives. WELLCOME FOUNDATION Ltd. 19 May, 1966 [9 April, 1965], No. 15088/65. Heading C2C. Compounds of the Formula (I) (n = 5 or 6) and their acid addition salts are prepared by standard methods, e.g. reducing a compound of the Formula (II) (X = CO.Z, Z.CO or CO.Y.CO, in which Z = (CH 2 ) 4  or  5  and Y = (CH 2 ) 3  or  4 ) with a metal hydride and hydrolysing the product, optionally followed by salt formation. The preparation of starting materials of Formula (II) and salts thereof is described. The compounds of the invention are active against T. cruzi, and may be administered in the form of pharmaceutical preparations containing them in association with a carrier.
Patent GB-804916-A (GB)
Title: An improved process and apparatus for carrying out reactions by the action of electrical glow discharges
IPC: H01J37/32
Filed: 1955-05-25
Abstract: 804,916. Treating gases with discharges. BERGHAUS, B. May 25,1955 [May 31, 1954], No. 15116/55. Class 39(1). An apparatus for carrying out chemical reactions on gaseous, vaporous or finely divided substances by the action of a glow discharge consists of a reaction vessel 1 with a gas outlet 4 connected to a pump and with a nozzle 3 for introducing the gas in the form of a jet with a speed of at least 1/10 of the speed of sound. A non-homogeneous pressure distribution is established with a zone of increased pressure 8 next to the nozzle. A pressure in the range of 0À01-1000 mm. Hg., preferably 0À5-40 mm. Hg., is maintained within the vessel and the total pressure drop is at least 2 : 1. The glow discharge is produced between the nozzle and an electrode 6 and the reaction products may be removed through the outlet 4 or through a pipe 9 which has a perforated annular tube at its end. Gaseous reaction products may be recycled. The nozzle 3 may have a cylindrical or conical bore and may have a cylindrical extension 10, Fig. 2, or may be in the form of a nose 11, Fig. 3. A baffle 12, Fig. 3, may be provided for deflecting the gas jet. The baffle may be cooled by flow of cooling medium 27 to collect reaction products and may be coated with catalytic materials. The baffle may be an electrode. Deposits may be removed from the baffle or other wall surfaces by rotating the surfaces or by moving the surfaces past stationary scraper devices. In Fig. 4 the nozzle 3 introduces the gas at right angles to the discharge set up between electrodes 13 and 14. Electrode 14 may also provide the gas outlet. Nozzle 3 may be insulated or connected to the walls of the vessel or connected to the middle conductor of a two-phase supply. Reaction components may be introduced through a member 26. In Fig 5 the discharge electrodes are a ring 20 and a wall of the vessel 18. The rest of the vessel 17 is of insulating material. The nozzle 2 may be of insulating material or may be of metal and connected in parallel with the wall 18. In further embodiments two or three separate nozzles may be provided for introducing the gas. Three nozzles or alternatively with a single nozzle, three counter electrodes may be connected to the three phases of a three phase supply. The discharge may be D.C. or pulsating.
Patent GB-596995-A (GB)
Title: Improved manufacture of glass having low power factor
IPC: C03C3/089
Filed: 1945-06-14
Abstract: 596,995. Glass. CORNING GLASS WORKS. June 14, 1945, Nos. 15117, 15118 and 15119. Convention dates, July 11, 1944. [Class 56] A glass particularly for use in electrical condensers contains essentially B2O3 and 5-20 per cent Al2O3, together with either BaO (10-30 per cent) or BaO +PbO (together 10- 40 per cent) or PbO (20-40 per cent) + SiO2. Part of the BaO and/or PbO may be replaced by the corresponding fluoride(s). When no BaO is present, the ranges of constituents are, in percentages by weight, SiO2 10-50 ; B2O3 5-65 ; Al2O3 5-15 ; PbO 20-40, 5-10 of which may be replaced by PbF2. When no PbO is present, the ranges are SiO2 0-55 ; B2O3 22-80 ; Al2O3 5-20 ; BaO 10-30, 5-10 of which may be replaced by BaF2. When both PbO and BaO are present, the ranges are SiO2 0-50 ; B2O3 10-75 ; Al2O3 5-15 ; PbO+BaO 10-40, 5-10 of which may be replaced by PbF2 and/or BaF2. When both PbO and BaO are present and their total weight is above 35 per cent, the ratio of PbO to BaO is preferably at least 3, but this ratio may be low when the total content of PbO and BaO is low (e.g. when it amounts only to about 10 per cent).
Patent GB-1140050-A (GB)
Title: Vending machine article delivery chute arrangement
IPC: G07F11/16
Filed: 1966-04-06
Abstract: 1,140,050. Shoots. WESTINGHOUSE ELECTRIC CORP. 6 April, 1966 [28 April, 1965], No. 15264/66. Heading B8S. [Also in Division A4] A vending machine for vending articles e.g. bottles stacked in a plurality of side-by-side storage compartments, includes a shoot extending from beneath the compartments to a vending opening, and having side walls converging towards each other in the direction of the opening. The machine includes first mounting means supporting the upper end of the shoot for limited vertical and lateral movement, second mounting means supporting the lower end for pivotal and limited vertical movement, and resilient means for resiliently constraining the shoot to a predetermined normal position and permitting limited movement of the shoot under the weight of an article being delivered. The machine may vend refrigerated bottles. The shoot which comprises a base 33 having a step 36 and side walls 31, and 32, 34, 35 is suspended by springs 50, 52 and includes a slotted member 41 keyed on a pin 46 and retained thereon by a snap ring 49, and a member 40 having a pin 42 received in a slot (43), (Fig. 5, not shown). The shoot is able to move vertically and pivotably relative to pin 46.
Patent GB-1147001-A (GB)
Title: Photographic projection printers
IPC: G03B27/62
Filed: 1966-04-06
Abstract: 1,147,001. Projection printer drive mechanism. EASTMAN KODAK CO. April 6, 1966 [April 12, 1965], No.15330/66. Heading G2A. A photographic projection printer for producing prints from a film strip which has an aperture located in a spaced relation to each image thereon, comprises a reciprocating claw which engages the apertures to drive the film and control means for interrupting the claw drive, effecting exposure, and restarting the claw drive. As shown in Fig. 1 a film 10 is transported through a printer from a supply reel (not shown) to a take-up reel 28 by a spring-biased claw 14 which is reciprocated between first and second end positions by a lever 26 which is driven by a gear 24 via an eccentric 25. In its first end position the claw engages an aperture (15) of the film 10 and transports the associated frame of the film into the printer 12 where it is illuminated by a lamp 18; as the claw 14 reaches its second end position, the eccentric 25 engages a switch 30 which energises a clamp 32 which prevents the film strip being returned by the claw on its reciprocal movement. On further rotation the eccentric 25 engages a switch 34 which de-energizes the gear 24 and energizes a timer 35 energizing a solenoid 36 which opens a shutter 19 so that an image of the illuminated film of frame 10 is projected by a lens 20 on to a photo-sensitive web 20; during this time the operator may inspect the next frame to be printed at 17. After a predetermined time the timer 35 de-energizes the solenoid 36 terminating the exposure, energizes rollers 38 which move the web 22 along one frame, and energize gear 24 so that the cycle may be repeated. The film take-up reel 38 is operated independently of claw 14 by loop sensors 41 and 42; the film supply reel is operated similarly. In an embodiment the clamp 32 may be replaced by a spring 33.
Patent GB-438458-A (GB)
Title: Improvements in or relating to dental masks
IPC: A61C13/107
Filed: 1934-05-23
Abstract: 438,458. Trick-masks &c. MAYO, H. P., 92, Portland Place, London. May 23, 1934, No. 15432. [Class 132 (iii)] A mask formed of celluloid or other plastic material or metal has a front face formed with teeth of regular or any desired characteristic appearance, and a rear face so made as to conform to the outer contour of the natural teeth of the wearer, small projections 5 being formed to fit perfectly into the interstices between the natural teeth and bigger projections 5<1> replacing missing natural teeth. Gold wires or plates 7, 6 may be provided for surer retention. The mask may have a ledge 8 to allow the cavities 3 to accommodate the front and lower edge of the natural teeth and to prevent it sliding up in wear. The front surface of the mask may be tinted the colour of teeth preferably by a dye soluble in ethyl alcohol and the gum portion the colour of the natural gum, or if required different colours may be employed. The mask may be made of celluloid, synthetic resin, or other thermoplastic material or of any, preferably light, metal coloured or enamelled.
Patent GB-1108747-A (GB)
Title: Switching circuits for electric motors
IPC: H02H7/08
Filed: 1965-04-12
Abstract: 1,108,747. Semi-conductor switching circuits. DANFOSS A/S. 12 April, 1965 [2 May, 1964], No. 15463/65. Heading H3T. [Also in Division H2] A switching circuit comprises a junctionless non-rectifying semi-conductor switching element having a negative temperature coefficient of resistivity, for connection between an electric motor 3 and a supply 1, and means for controlling the element so that it switches to a low resistance condition when an applied voltage exceeds a threshold voltage and switches to a high resistance state when the current passing through it exceeds a threshold current. As shown an A.C. or D.C. supply 1 is switched to an A.C. or D.C. motor 3 by two junctionless non- rectifying switching elements 4 and 5. By momentarily closing switch 7 the element 5 turns ON so that the supply is then across element 4 which is also switched ON as the motor starts. Closure of switch 9 causes a high current to flow through the elements 4 and 5 which causes them to turn OFF. The elements 4 and 5 protect the motor since any excessive current through the motor would cause the elements to turn OFF. In an alternative arrangement an impulse generator and a capacitor discharge may be used to switch the elements ON and OFF respectively. A combination of several switching elements can be used connected in series. The elements are formed as a polycrystalline structure and by varying the proportions of the materials e.g. tellurium and germanium used and the thickness of the element the threshold values of voltage and current can be varied.
Patent GB-168172-A (GB)
Title: Apparatus for the manufacture of concrete blocks and the like
IPC: B28B7/18
Filed: 1920-06-08
Abstract: 168,172. Forbes, W. June 8, 1920. Moulds.-A machine for moulding hollow blocks has the mould formed of four sides hinged to a bottom and secured in closed position by a pivoted clamping-band i fitting against wedges on the front face of the mould. The base of the mould is perforated to allow the passage of a core, which is raised b y a rope k fixed at one end to the top of the core and passes over a guide pulley q to a winding-drum l. The other end of the rope then passes over a ratchet-wheel n so that the tension of the rope may be adjusted. Guiderollers s carried by the core roll on adjustable uprights carried by the machine frame.
Patent GB-1530522-A (GB)
Title: Manufacture of fibrids from polymers
IPC: D01F6/10
Filed: 1976-04-15
Abstract: 1530522 Paper and board made from synthetic polymer fibrids BASF AG 15 April 1976 [16 April 1975 (2)] 15492/76 Heading D2B [Also in Division B5] Papers, boards and shaped articles e.g. egg trays are formed from fibrids of a homopolymer or copolymer of styrene vinyl chloride or vinylidene chloride having a length of 0.5-30 mm a thickness of 0.5-10Á, a specific surface area of 10-70 m<SP>2</SP>/g and a Schopper-Riegeen fineness of 15-50‹ SR. The products may also contain cellulose mechanical wood pulp, waste paper or other natural or synthetic fibrous material.
Patent GB-119473-A (GB)
Title: Improvements in Feed Apparatus for Roller Mills.
Inventor: HAGMANN OTTO
IPC: B02C4/28
Filed: 1918-09-25
Abstract: 119,473. Hagmann, O. Sept. 26, 1917, [Convention date]. Roller mills. - In automatic feed-hoppers for rollermills, of the kind in which a pivoted feed-gate, co-operating with a feed-roller, is controlled by the pressure of the material in the hopper, the sensitiveness is increased by arranging the gate 5 in an inclined position and with the pivots 6 near the bottom so that the weight, as well as the lateral pressure, of the material is effective to open the gate. When the material rises above the plane a, the gate is opened, the opening depending on the amount of material present. The gate is moved into the closed position by an adjustable spring 7 which is secured to an arm 9 on the gate.