baber/WOPTO huggingface dataset:
Patent GB-440657-A (GB)
Title: Improvements in or relating to the manufacture of porous filter bodies
IPC: B01D39/20
Filed: 1934-07-03
Abstract: Porous filter bodies are made by mixing a solid granular base material, such as quartz sand, pumice stone sand or chamotte, with an organic cement which is self-hardening at ordinary temperatures, shaping the mass and allowing it to harden.  Such a cement may be a mixture of a synthetic resin--e.g. neutral phenol-formaldehyde condensation product in the A-stage--with a hardener therefor such as p - toluene sulphochloride, benzene sulphochloride, oxalic acid or neutrally-reacting oxides such as lead oxide.  The proportions may be 10 parts by weight of the granular material to 1 to 3 parts by weight of the cement.  To strengthen the bodies, siliceous white, heavy spar or clay may also be added.  Three examples are given.  The Specification as open to inspection under Sect. 91 describes the use of a liquid condensation product of cresol and formaldehyde, with barium oxide as a hardener.  This subjectmatter does not appear in the Specification as accepted.ALSO:Porous filter bodies are made by mixing a solid granular base material, such as quartz sand, pumice stone sand or chamotte with an organic cement which is self-hardening at ordinary temperatures, shaping the mass and allowing it to harden. Such a cement may be a mixture of a synthetic resin-e.g. neutral phenol-formaldehyde condensation product in the a-stage-with a hardener therefor such as p-toluene sulphochloride, benzene sulpho-chloride, oxalic acid or neutrally-reacting oxides such as lead oxide, or may be a self-vulcanizing rubber solution or mixture. The proportions may be 10 parts by weight of the granular material to 1 to 3 parts by weight of the cement.  To strengthen the bodies siliceous white heavy spar or clay may also be added.  The Specification as open to inspection under Sect. 91 describes the use of a liquid condensation product of cresol and formaldehyde, with barium oxide as a hardener.  This subject-matter does not appear in the Specification as accepted.
Patent GB-666567-A (GB)
Title: Improvements in or relating to roof supports for mines
IPC: E21D23/08
Filed: 1948-07-22
Abstract: 666,567. Endless-chain mining-machines. RITCHIE, C. July 22, 1949. [July 22, 1948] No. 19622/48. Class 68 (i). [Also in Group X] In a mine roof support comprising extensible pillars adapted to yield at a given load a flexible circulating track 7, passing round chain wheels 5, engages the mine roof and a similar track 11, passing round chain wheels 10, engages the floor. The chain wheels 5 are carried on rams 2 in the pillars, and when the rams are forced outwards by fluid pressure the track 7 is pressed against the roof 8 by a shoe 6 and the track 11 against the floor 19, and circulation of the tracks by driving at least one of their chain wheels will move the support towards the face 20, the movement being assisted, where the roof slopes upwards towards the working face, by the horizontal component of the roof pressure. Coal-cutting mechanism is incorporated, comprising a cutting chain 16 in guides 15. A conveyer 13, 14 may be included, fed by a ramp 21.
Patent GB-364101-A (GB)
Title: Improvements in and relating to machine guns and small arms
IPC: F42B39/08
Filed: 1930-06-27
Abstract: 364,101. Machine e guns; smallarms. BLACKER, L. V. S., 54, Parliament Street, and GOLDMAN, C. S., Salisbury House, both in London. June 27,1930, Nos. 19637/30 and 938/31. [Classes 92 (ii) and 119.] Guns of the single-loading or magazine types or those of the type which are semi-automatic or completely automatic have a breech-block sliding externally of the barrel which forms a guide for the block dispensing with the need for any guidance from the body of the weapon. The breech-block is in the form of a cylindrical sleeve closed at the rear and firing is effected, preferably pneumatically, by means precluding rearward escape of gas. Locking between the barrel and breech-block is effected by means which are independent of the body of the weapon. The invention is shown applied to a double-barrel machine gun of the short-recoil type in which the recoil accompanying the discharge of one gun causes the loading and firing of the other gun. The gun shown is one designed for firing interconnected cartridges of the kind described in Specification 364,126, which are completely consumable, thereby dispensing with extracting and ejecting mechanism. Further, the webs connecting the cartridges in belt form are sheared by the closing breech block and are also consumable. Jamming of the gun by the cartridge case or cartridge belt is thus eliminated. The breechblocks d<1>, d<2> are connected by rods g<1>, g<2> to opposite ends of a lever f centrally pivoted at e to the gun support c. Hooks j<1>, j<2> on the rods g<1>, g<2> engage pins h<1>, h<2> on the gun barrels to lock the breechblocks to the barrels, the unlocking being effected when the ends of the lever f swing in an outward arcuate path during the short recoil of the barrel and breech-block. After unlocking, the breechblock moves rearwards alone and a fresh cartridge is inserted through the registering slots k<1>, k<2> and is sheared from the belt and loaded into the gun chamber when the breech-block is returned by the movement of the lever f caused by the discharge of the other gun. Firing is effected by a pneumatic piston o<1> which is cocked against the action of a spring r<1> into engagement with a catch t<1> by the gases of discharge, the catch being automatically released when the gun is closed and locked to permit the piston to compress air and gas in the cylinder m<1>, the pressure being communicated to a pointed pressure-plate located in the cartridge adjacent the primer. In an alternative firing means, the pressure-plate is actuated by an inertia-operated pin sliding in the breech-block.
Patent GB-936860-A (GB)
Title: Ionization dental system
IPC: A61K8/02
Filed: 1962-05-22
Abstract: Apparatus for introducing fluorine into the teeth comprises a mouthpiece electrode for holding a fluoride-containing substance in contact with the teeth, a second electrode adapted to contact the body of the person and a controllable source of electric current for connection to the electrodes.  The mouth electrode preferably comprises a U-shaped member of channelled cross-section, similar to an impression tray, and this is enclosed in insulating material except for the inner surface of the channel and a projection which serves for electrical connection to a supply lead.  This electrode is filled with a mixture of lithium fluoride and dry sodium alginate which, when it is moistened, forms a gel which can be pressed into intimate contact with the teeth.  The second electrode may be a saliva tube, the greater part of which carries an insulating coating, or it may be a metal plate mounted behind a water absorbent fabric layer on an adhesive backing, so that it can be attached to the skin. The power supply may be a battery of, for example, 67.5 volts and the output from this is connected through a milliammeter, a time switch and a controlling resistance to the electrodes, the mouth electrode normally being negative.  A flasher unit may be connected to the circuit to indicate when the apparatus is working and the meter may carry a double scale, indicating the correct time of treatment for any given current reading.
Patent GB-293469-A (GB)
Title: Improvements in carburettors for internal combustion engines
IPC: F02M15/02
Filed: 1928-07-06
Abstract: 293,469. Claudel, C. H. July 7, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Spray carburettors.-The conduit 10 bv which fuel is supplied from the float chamber 1 to the nozzle D is preferably of flattened cross-section and is surrounded by a jacket 11 through which heating fluid is circulated. The jacket is provided with cleaning and draining apertures 12, 14 closed by screwed plugs. The conduit 10 may be formed in an extension 3 cast integrally with the float chamber and serving to support the nozzle D, the aperture 5 through which the nozzle is inserted being closed by a cap 6.
Patent GB-933838-A (GB)
Title: Apparatus for the continuous spinning of glass or other inorganic, glass-like substances from rods
IPC: C03B37/02
Filed: 1961-05-31
Abstract: 933,838. Glass fibre manufacture. W. H. W. SCHULLER. May 31, 1961 [March 29, 1961], No. 19719/61. Class 56. A modification of the apparatus described in Specification 837,910 for producing particularly fine glass filaments comprises a rod receiver unit constructed as a nozzle holder of a highlyresistant material such as chrome - aluminium - cobalt alloys or steel, in which thin walled nozzles made of noble metal, e.g. platinum are inserted to project with their ends beyond the end of the holder, the holder being provided with vent or dispersion holes or slots to allow the accumulated heat to dispense. The receiver unit(s) are held in a supporting fire-clay block. The nozzle inserts 12 having tapered ends 20 (Fig. 2) and provided with flanged edges 21 fit into nozzle holder 11 which is provided with vents 13. In another embodiment the nozzle insert may have more than one outlet. The fire-clay block may be provided with holes aligned with those in the nozzle holder to connect the spinning space with the atmosphere.
Patent GB-516707-A (GB)
Title: Improvements relating to machines for preparing and for spraying on roads mixtures of bitumens, tars or oils with asphaltic powders or the like
IPC: E01C19/46
Filed: 1938-07-05
Abstract: 516,707. Asphalt &c. heating and spraying apparatus. MARINI, G. July 5, 1938, No. 19938. Convention date, July 8, 1937. [Class 107] A machine for preparing and spraying asphaltic and like viscous road-surfacing materials comprises a heating tank 1, in which the asphaltic powders are mixed with bitumen, tar or oil, and two reservoirs 4,. 5 to which the heated mixture is fed and from which, alternatively, it is sprayed. In use, the filling of one reservoir is effected while the other is being emptied, so that spraying proceeds without interruption. The tank and reservoirs shown are fitted with rotary stirrers 2, 10, respectively, and the shaft 3 of the stirrer in the tank is fitted with a brush 16 which cleans a filter 15 in front of the outlets 6, 7. By these, the mixture is conveyed to the reservoirs by funnels 8, 9. When filled, the reservoirs are sealed and supplied with compressed air to effect the spraying. Compressed air may be used to atomise the mixture issuing from the sprayer, and to supply the air to the fuel burners beneath the tank 1.
Patent GB-499038-A (GB)
Title: Improvements in or relating to respirators for use in atmospheres containing carbon monoxide
IPC: A62D7/00
Filed: 1937-07-19
Abstract: In a respirator for use in atmospheres containing carbon monoxide wherein the latter is removed from the inspired air by catalytic oxidation after passage through a drying medium, the drying medium comprises two layers of material disposed in succession in the path of the air, and composed, the first of fused zinc chloride dispersed on a carrier, preferably active charcoal, and the second of a granulated mixture of calcium chloride and fused zinc chloride.  A third layer composed of magnesium perchlorate granules may be provided.  The material of the first layer may be made, for example, by mixing 9 parts of dry charcoal granules with 15 parts of fused zinc chloride, and stirring the mixture until cool enough for the granules to remain non-adherent to one another, and that of the second layer by mixing powdered anhydrous calcium chloride with about 20 per cent of fused zinc chloride, and when cold, granulating the mixture. Reference is made to the use of the known oxidizing catalyst for carbon monoxide consisting of a mixture of manganese and copper oxides to which a small quantity of another oxide, such as of silver is added.
Patent GB-672224-A (GB)
Title: Modified alkyd resins
IPC: C09D125/14
Filed: 1949-08-02
Abstract: Varnish resins are obtained by heating an aromatic vinyl hydrocarbon, specifically styrene, a polybasic acid and an unpolymerized partial ester of a polyhydric alcohol and an unsaturated drying oil fatty acid.  The partial ester may be prepared by reacting the alcohol, e.g. glycerol or pentaerythritol, with an unsaturated drying oil fatty acid or by the alcoholysis of a drying oil with the polyhydric alcohol. Suitable drying oils are linseed, tung and dehydrated castor oils. The polybasic acid constituent specified is phthalic anhydride. Polymerization may be effected in the absence or presence of a solvent, and the solvent, e.g. xylol, may be added only towards the end of the reaction.  In the examples, the mixtures are refluxed in an apparatus similar to the Dean and Stark arrangement for water removal.  The resins may be thinned with xylol and form, with naphthenate driers, air-dried, tack-free films.  The resins may also be stoved by heating to 127 DEG  C. for 3/4 hour.
Patent GB-899528-A (GB)
Title: Improvements in or relating to the stabilization of the output voltage of a direct current electric supply system
Inventor: MOORE RAYMOND LEONARD
IPC: G05F1/33
Filed: 1958-06-24
Abstract: 899,528. Automatic voltage control systems. PLESSEY CO. Ltd. June 16, 1959 [June 24, 1958], No. 20169/58. Class 38 (4). In an automatic direct-voltage control system, a field of a dynamo in series with a supply is controlled differentially by the output voltage and a stabilized reference voltage. In an embodiment, a generator armature 1, in series with an output terminal 3, is driven by a motor 4 connected across a supply 2. A field 18 of the generator is fed from the supply via a resistor 19a. The output of an alternator 5 driven by the motor 4 feeds a full-wave rectifier 7 through the main windings 21, 22 of a saturable reactor 25. The rectified alternator output through a control winding 16 of the saturable reactor 25, is fed to a voltage regulator tube 26 shunted by Zener diodes 9 in series with a resistor 8. The flux of a second control winding 20, energized from the stabilized voltage, is opposed by the flux from the control winding 16 so as to tend to maintain constant the output voltage of the rectifier 7. A full-wave rectifier 14 is fed from the alternator 5 via windings 12, 13 of a magnetic amplifier 6 and energizes a field 17 of the generator via a feedback control winding 10, the flux of which is additive to that of a bias-winding 15 energized from the stabilized output and adjusted by a variable resistor 23. The flux due to the bias and feedback windings is opposed by the flux of a control winding 11, energized by the difference between the output voltage and the voltage across Zener diodes 9, so as to vary the current in the field 17 of the generator to maintain the output voltage constant. In a modification, the bias-winding 15 is left out and the resistor 8 is directly connected to the rectifier 7 and the generator voltage adjusted by variation of the valve of the resistor 19a.
Patent GB-658286-A (GB)
Title: An improved method for the evaporation or concentration of liquids
IPC: B01D1/14
Filed: 1948-07-28
Abstract: <PICT:0658286/III/1> Liquids are evaporated in a closed container by means of a submerged flame-burner, the products of combustion and the vaporized liquid are passed through a pipe system over which the liquid-to-be-evaporated is caused to flow, dry air is passed over the liquid flowing over the pipe system, and the partially evaporated liquid so obtained is then fed to the closed container for further evaporation by the submerged flame burner.  Dilute sulphuric acid flows from vessel 14 into trough 11 and then trickles over serpentine pipe 8 the interior of which is rifled. The combustion gases and steam from container 2 which contains aqueous sulphuric acid heated to boiling by submerged flame burner 1, pass through pipe 8.  Air is drawn into the bottom of shell 9 by fan 10 and flows over the acid trickling over pipe 8.  The partially concentrated acid collects in tank 7 and then flows into container 2 through pipe 4.  The condensate formed in pipe 8 may be blown out of the open end of the pipe by the non-condensible gases, or alternatively, it may be withdrawn through pipes 15. The burner 1 may be supplied with liquid or gaseous hydrocarbons, and air; or it may be supplied with hydrogen and oxygen. Specification 623,446 is referred to.
Patent GB-252580-A (GB)
Title: Machine for wrapping up piece goods
IPC: B65B39/14
Filed: 1925-08-12
Abstract: 252,580. Schilbach, G., and Hesser Maschinenfabrik Akt.-Ges., F. Aug. 12, 1925. Packeting soap and the like in cartons. - Relates to machines, for enclosing cakes of soap and like piece goods in box-like wrappers, and of the type having two rotary conveyers, one for the articles and one for the wrappers, and means for pushing the articles into oppositely disposed wrappers in the opposite conveyer. According to the invention, the pieces and the articles are conveyed against stops below and are elevated into their respective rotary conveyers, which are arranged to rotate coaxially and at the same speed and in the same direction. In the form of machine shown, two cakes of soap are fed abreast, with their ends abutting, by a belt 1, Fig. 3, and rollers 2, to belts 3<1>, 3<11>, Fig. 1. At the same time, members 16 on chains 15<1>, 15" remove cartons F from a magazine 14 and feed them to the right, Fig. 3, against a stop 31. An arm 44 is raised from the position shown in broken lines to that shown in full lines to open out the carton, which is thrust, in its expanded state, into a pocket 29 on a wheel 19 by a plunger 34. Simultaneously, the soap s is thrust into a pocket 60, Fig. 1, of a wheel 18 on the same shaft 20 as that of the wheel 19 and rotating therewith. With each pocket 29 is associated a mouth-piece comprising spring tongues 130, Figs. 1 and 6, mounted on a frame 133 adapted to slide on a rod 134. The mouth-piece is actuated to enter within the flaps f of the carton and to guide the blocks s, which are thrust out of the pockets 60 and into the cartons by rods 35 carrying plunger heads 37. During the further rotation of the wheel 19 and at station III, Fig. 3, the flaps are supplied with adhesive by rolls 46<11> and subsequently are folded by any known means, the closure being finished by the time the carton reaches station V. Side rails 51 prevent the flaps from opening, and an arm 140<1> removes the packages from the wheel into a delivery way with side rails 42<1>, 42<11>. One or more than two cakes soap may be enclosed in each carton, and the cartons may be already closed at one end. The conveying devices may run continuously or intermittently. If the action is intermittent, a single stationary transferring device and mouthpiece may be employed. Two machines M<1> ,M<2> may be arranged to operate side by side, four blocks S', S<2> being conveyed by two roller conveyers R<1>, R<2> and R<3>, R<4> as shown in Fig. 5.
Patent GB-844872-A (GB)
Title: Improvements in "function generator"
IPC: G01R23/10
Filed: 1957-06-27
Abstract: 844,872. Frequency detectors. GENERAL ELECTRIC CO. June 27,1957 [June 29,1956],No. 20301/57. Class 40(5). [Also in Group XXXVI] The mean pulse rate of pulses generated by a random pulse source 53 may be measured by applying them to a bi-stable valve circuit 57 whose output is alternately positive and negative pulses applied to several parallel branches of series R-C, R-L or L-C circuits forming a network 60 with output applied to a full-wave rectifier circuit 63, 64, C. The values of R, C or L in each branch may be determined by inverse Laplace transforms so that the mean current output is proportional to log (1 + rT) where r is the pulse rate and T a constant, or to rα where is a constant less than unity. In theory an infinite number of parallel branches corresponding to terms of an infinite series should be used but a finite number of branches produces an approximation. The double diode 56 permits pulses to be semidirectionally injected into the system. The pulse source 53 may be a radiation detector of the proportional counter or scintillation type with output applied through a back biased triode controlling the output pulse rate. Moreover the ratemeter can be inversely operated by applying a control wave to the output capacitor C so that the D.C. amplifier 55 responds to the difference between the ratemeter output and control wave and controls the mean rate of pulse generation at terminal 52 in accordance with the control wave at terminal 51 and the design of network 60, i.e. the pulse rate may be an exponential or other function of the control current at terminal 51. Finally, the variable rate pulses at 52 may be applied to a further ratemeter circuit similar to 54 but with a different synthesized network 60 so that a function is generated from its rectified output related to the function applied at terminal 51.
Patent GB-818766-A (GB)
Title: Improvements relating to roll film conveying devices for photographic mirror objective cameras
IPC: G03B17/17
Filed: 1957-06-27
Abstract: 818,766. Photographic cameras. OPTISCHE INDUSTRIE DE OUDE DELFT N.V. June 27, 1957 [June 28, 1956], No. 20377/57. Class 98(1) A mirror objective camera has a rollfilm conveying device which comprises a supply spool and a take-up spool positioned outside the camera on the same side of the camera housing, a light tight channel extending from the film-passage aperture in the wall of the camera housing to slightly beyond the image surface of the camera for receiving a film loop formed between the supply and take-up spools, and means, including a pressure plate located in the said channel opposite an exposure window in the wall thereof, for pressing the film into the required curved shape during exposure, the pressing means being mounted on a rod extending longitudinally through the channel and being retractable therefrom to permit direct passage of film between the spools, and on return of the rod and pressing means to their operative positions to push the film in the form of a loop into the channel. As shown the camera has a concave mirror 2 which forms an image of the object on a spherical surface 8. To give the film 5 curvature conforming to that of the member 8, a pressure plate 9 is mounted behind the exposure window in the channel 11 so as to be moveable in the direction of the optical axis of the system. The member 9 also carries film rollers 18, 19 and is mounted at the end of a rod 17 which passes through a cover 15 of the housing 10 and terminates in a handle 16 by which it may be pulled out so that the plate 9 occupies a position indicated by broken lines where the films may be wound directly from the spool 6 to the spool 7. When the rod 17 is re-inserted, the film is pushed in loop-form into the channel 11 and the member 9 is caused to move perpendicular to the rod by means of an eccentrically disposed member operated by rotating the rod about its horizontal axis.
Patent GB-941243-A (GB)
Title: Olefin copolymer flashing composition
IPC: C04B26/04
Filed: 1962-05-28
Abstract: Roofs may be coated with a concentrated dispersion in a liquid dispersing medium or solvent, the dispersion consisting of a copolymer of ethylene and a non-aromatic terminally unsaturated monoolefine containing 3 to 4 carbon atoms which copolymer has a relative crystallinity content of less than 10% and at least one reinforcing filler e.g. carbon black or kaolin (see Division C3) and the dispersing medium may be pentane, heptane, naphtha, turpentine, xylene, carbon tetrachloride or 2-ethyl-hexanol.  The dispersion may be used to cover a roof insulated with foamed thermoplastics such as foamed polystyrene, polymethane or polyethylene.