baber/WOPTO huggingface dataset:
Patent GB-504629-A (GB)
Title: Improvements in electron multipliers and circuits utilising them
IPC: H01J43/04
Filed: 1937-10-29
Abstract: 504,629. Two-way transmission. FARNSWORTH TELEVISION, Inc. Oct. 29, 1937, No. 29588. Convention date, Oct. 31, 1936. [Class 40 (iv)] [Also in Group XL] An electron multiplier for use as a telephone repeater comprises a velocity-selecting device for the electrons and a multiplying chamber having opposed walls forming multiplying surfaces and an accelerating grid between them, the electrons passing along the chamber between the impacts. In the arrangement shown electrons from the cathode 12 pass through openings 15, 19, 20 and 21 n a diaphragm 14, a casing 11, another casing 9, and a secondary cathode 22 respectively, these openings being aligned with each other and not with the cathode 12. The beam is caused to pass through the openings by a deflecting electrode 16, electrons of the required velocity being thus selected. The casing 9 is connected to the line 2, 4 through a condenser 5 and a choke 6, whereby signal potentials are applied to it. The multiplier consists of two secondary cathodes 22, 24 of high-resistance material having between them a herring-bone grid 25 carried on rods 26, 27 of high resistance material. These rods are so connected to each other and to the cathodes 22, 24 as to produce a field which guides the electrons along the space between the cathodes and through a grid 29 attached to the rods to a collecting electrode 31. Fig. 3 shows an arrangement of two such multipliers for transmitting signals in either direction. The inputs of the two multipliers are fed through transformers 55, 64 from centre tappings of hybrid transformers 51, 57 in the line 2, 4. The output of each multiplier passes through the primary of that one of the hybrid transformers from which the multiplier is not fed. Potential supply to the multiplier is obtained from a low pass filter 66 between the transformer 51, 57 and separated therefrom by balancing networks 50, 58.
Patent GB-711512-A (GB)
Title: Improvements in or relating to hydroxypolybutadienes and esters thereof
IPC: C08C19/38
Filed: 1951-12-18
Abstract: A hydroxypolydiene is prepared by hydroxylating a liquid polydiene prepared from a conjugated diolefin having from 4 to 6 carbon atoms with hydrogen peroxide in the presence of a hydroxylating catalyst. Specified polydienes are polybutadiene and polyisoprene, while "hydrogen peroxide" includes compounds capable of yielding hydrogen peroxide.  Specified catalysts are formic acid, methyl, ethyl and propyl formates and are preferably used in equivalent proportions with the hydrogen peroxide.  It is preferred that the reaction occurs at 25 to 60 DEG C. while a solvent such as chloroform, chlorobenzene, carbon tetrachloride, methylene chloride, and ethylene chloride may be present.  The hydroxy polydiene may be esterified with a monobasic organic acid or anhydride thereof such as formic, acetic, capric, caprylic, lauric, myristic, palmitic, stearic, acrylic, decylenic, dodecylenic and oleic acids and anhydrides, benzoic and naphthoic acids and alkyl derivatives thereof.  When unsaturated acids are used a polymerization inhibitor, e.g. tertiary butyl catechol, and when using anhydrides an esterification catalyst, e.g. pyridine or sodium acetate is preferably present.  The esterification may take place in the presence of a solvent such as chlorinated hydrocarbons, ethers, and aromatic hydrocarbons.  The hydroxypolydiene may also be esterified with a phosphorus-containing esterifying agent such as phosphorus oxychloride, pentoxide, trichloride and pentachloride and orthophosphoric acid, preferably in the presence of chlorinated liquid hydrocarbons, ethers, or aromatic hydrocarbons.  This ester may be further reacted with an alcohol preferably a low molecular weight aliphatic monohydric alcohol such as butanol to produce a neutral mixed ester.  The polydiene may be hydrogenated, either before or after it is hydroxylated, in such solvents as dioxane, dimethyl ether of ethylene glycol and dimethyl ether of diethylene glycol using a hydrogenation catalyst, e.g. nickel or kieselguhr, Raney nickel, or platinum, cobalt, or palladium on charcoal.
Patent GB-1416142-A (GB)
Title: Slip ring assemblies
IPC: H01R39/08
Filed: 1972-06-24
Abstract: 1416142 Slip rings LUCAS ELECTRICAL CO Ltd 19 June 1973 [24 June 1972] 29721/72 Heading H2A A slip ring assembly is formed by (a) butting together two insulating phenolic resin arcuate bodies 4, 5 to form a sleeve 3, (b) sliding two copper rings 1, 2 over projections 9, 11 on bodies 4, 5 such that recesses 7 in the rings are aligned with the projections 9, 11 and further projections 10, and (c) compressing and inserting a split cylindrical spring 6 into the sleeve 3; when released, the spring expands and forces bodies 4, 5 into locking engagement with the rings 1, 2. Bodies 4, 5 are also provided with ribs 14 for meshing with the spaces between ribs 17 in spring 6; ribs 17 also have teeth 18 for biting against a rotor shaft when the assembly is mounted thereon.
Patent GB-866103-A (GB)
Title: Improved melamine resin colloid and manufacture of wet-strength paper therewith
IPC: D21H17/51
Filed: 1957-09-23
Abstract: An aqueous colloidal solution of melamineformaldehyde condensate is produced by adding formaldehyde to a colloid aqueous solution of a partially polymerized cationic melamine-formaldehyde having a pH of 0,5-5, and ageing the resulting mixture, e.g. for about 8 hours.  The amount of formaldehyde added may vary from 1/2 to 15 mols per mol of combined melamine in the initial solution.  In examples the initial solution is prepared by dissolving spray-dried trimethylolmelamine in water, adding 0,9 mol HCl per mol of melamine and ageing to permit the resin particles to grow to colloidal size.  Acetic, formic, phosphoric or sulphurous acid may be employed in place of hydrochloric.  A polyhydric alcohol or polyhydric alcohol ether may also be added in preparing the initial solution.  An example is also given of the application of the invention to a cationic colloidal solution of a urea-melamine-formaldehyde resin.  The "fortified" colloidal solutions of the invention give paper of higher web strength than corresponding solutions to which no formaldehyde has been added or to which formaldehyde has been added before the resin particles have attained colloidal dimensions.  Specifications 622,905, 623,355, 623,361, 623,362, 691,053 and U.S.A. Specifications 2,485,080, 2,548,513 and 2,559,221 are referred to.
Patent GB-482152-A (GB)
Title: Improvements in or relating to the use of radio receivers as emergency warning devices or the like
IPC: H03J9/00
Filed: 1936-11-03
Abstract: 482,152. Electromagnetic switches. PETRACCHINI, U. G. Nov. 3, 1936, No. 29916. [Class 38 (v)] [Also in Groups XL and XXXVIII] A radio receiver is remotely controlled by varying the voltage of the electrical supply system by means of a relay controlling a switch which tunes the receiver to a predetermined wavelength. The construction of the switch 11 of Fig. 14 is shown in Figs. 20 and 21 ; eight pairs of contacts 81 ... 88 are provided, seven for controlling the receiver and one for an optical or acoustic alarm device. The switch is actuated by an electromagnet 125 of arcuate form, the armature 124 of which rotates a toothed wheel 116 (Fig. 21) by means of a pawl, thereby depressing a cam member 111 and pressure disc 105 by means of a transverse pin 113. Contacts 88<11> and 84<11> are thereby connected to 88<111> and 84<111> respectively. The electromagnet is energized by impulses from the device 90 of Fig. 14 and returns to the position of Fig. 21 due to the restoring force of contact springs 88<11>, 84<11>. In a further modification, Fig. 23, an electromagnet 142 is energized from a rectifier bridge 140 connected to a secondary of transformer 136, another secondary of which supplies relay 148 through contact 146. When the mains voltage falls, relay 142 releases and closes contact 146 thus exciting relay 148. This releases armature 149 from a catch 150 on a spring-loaded rod 70 which then drops to close contacts 152, 154 and operates change-over switch 11, operating on the receiver 73 as previously described. Closure of contacts 152, 154 completes the heater circuit of the time delay device 166, the plunger 171 of which rises slowly to push back the rod 70 after a predetermined time. The invention is intended for the broadcasting of special emergency instructions, alarm warnings, &c. from a single transmitter to the wave length of which all receivers on a given supply system are automatically brought into tune.
Patent GB-536450-A (GB)
Title: Improvements in or relating to electron discharge valve arrangements
IPC: H03G3/08
Filed: 1939-11-13
Abstract: 536,450. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Nov. 13, 1939, No. 29949. Convention date, Nov. 12, 1938. [Class 40 (v)] Negative feed-back in an audio-frequency amplifier is derived from an auxiliary electrode 5, which follows the input signal alternations by reason of the resistance 11, and is applied through a condenser 12 to the input circuit The distribution of electron current between the auxiliary electrode 5 and main output electrode 3 is varied by controlling the potential of an intermediate control electrode 6. This control is effected by a variable bias tapping 14 or by using A.V.C. potential obtained in an earlier stage of the receiver. On occurrence of strong input, the output from anode 3 is reduced by making the electrode 6 more negative, whereupon the negative feed-back from electrode 5 is increased thereby reducing the swing of the control grid 4 and eliminating possible distortion. In one modification the functions of the electrodes 3 and 5 are interchanged, and in another modification, Fig. 4 (not shown), two adjacent anodes are used and the distribution of electron current therebetween is controlled by a regulatable magnetic field. Reference has been directed by the Comptroller to Specification 528,893.
Patent GB-171602-A (GB)
Title: Improvements in or relating to the treatment of jute and like fibrous material
IPC: D01C1/02
Filed: 1920-10-23
Abstract: 171,602. Sandeman, F. D. S. Oct. 23, 1920. Processes; fibres, sorting and stapling.-Jute and like fibrous material as it passes from the opener is cut into pieces not more than two feet and not less than 8 inches in length, by means such as those described in Specification 120,300. It is then delivered automatically to a hopper feed apparatus, and transferred in blanket form to the softener. From the softener it is delivered by a conveyer to the barrows, and after the necessary interval is fed by hand to a hopper feed mechanism which passes it to the breaker card. The fibres issuing ,from the cutting- machine on conveyer bands may be sorted and graded in accordance with the portion of the stalk from which they are taken.
Patent GB-629172-A (GB)
Title: Improvements in or relating to apparatus for and method of treating granular material
IPC: B22C5/08
Filed: 1946-10-09
Abstract: 629,172. Roasting-furnaces. SIMPSON, H. S. Oct. 9, 1946, No. 30133. Convention date, May 2. [Class 51 (ii)] [Also in Group XXII] Spent foundry sand or other granular material is dried and freed from bonding material or combustible matter by placing on a rotary table 8 within a confined space containing fixed ploughs 60 and directing flames and auxiliary air into said space. This may be defined by a hood lined with fire brick &c. and provided with a collar 6 which dips into a bed of sand permanently contained within a rim 9 of the table 8. This is driven through reducing gearing by a motor 20. The hood 3 has a flue 31 for dust and 'hot gases hopper 33 with a handcontrolled inlet valve 36, an inspection door, not shown, and an outlet with a hand-controlled door 84. The ploughs 60 are carried by hollow spindles 54, Fig. 6, mounted in a conduit 49 supplied with compressed air which is discharged at 62 so as to cool the.ploughs as well as assist in the combustion of oil or other:organic binder. Four of the eight ploughs are angularly adjustable by means of arms 64, links 67, 69, Fig. 1, and a handle 70 which is held by engagement with one of the teeth of a fixed rack 72. Burners 78 of known type with oil and air supply pipes 79, 80 are arranged in tangential passages 73.
Patent GB-1491268-A (GB)
Title: Process for purifying polymers
IPC: C08C2/04
Filed: 1975-07-17
Abstract: 1491268 Recovery of uranium ANIC SpA 17 July 1975 [2 Aug 1974] 30143/75 Heading ClA [Also in Division C3] Uranium residues contained in polymers of mono- or diolefins which have been prepared using a uranium-containing catalyst, are recovered by dissolving the polymer in a hydrocarbon and extracting the uranium residues therefrom by mixing with an aqueous solution of ammonium carbonate or bicarbonate, allowing the mixture to separate into two phases, the aqueous phase of which contains uranium in a soluble form. The aqueous solution is then heated to drive off NH 3  and CO 2 , the uranium remaining thereafter as an insoluble residue.
Patent GB-230015-A (GB)
Title: A process for coating hollow objects made of cement
IPC: B28B21/94
Filed: 1924-12-15
Abstract: 230,015. Ligonnet, E. Feb. 27, 1924, [Convention date]. Centrifugal machines ; casting pipes &c.-A process for coating pipes and other cylindrical and conical objects made of cement consists in forming, by centrifugal action, in the interior of the pipe to be coated, a surface presenting protuberances which serve as an anchorage for the subsequent adhesion of finishing coats having a basis of asphalt, pitch, &c. Inside a cylinder a, rotated by rollers b, is placed the pipe c to be coated, or cement is centrifuged to form such a pipe; after which a quantity of mortar, composed of sand, cement, and light materials such as pumice, slag, &c., is introduced into the pipe and is centrifuged against the still fresh surface of the pipe wall, thus producing a wall presenting protuberances formed by the light materials covered by a fine cream of cement. The cement is then allowed to set, when the surface of said protuberances is fettled by means of a sand-blast or a jet of water to remove the cement cream. After heating the inside of the pipe, a quantity of hot asphalt, pitch, &c. is introduced and centrifuged to cover the ends and interior walls with a layer e, the thickness at the ends being determined by flanges d. In a modification the protuberances are formed by the successive centrifuging of gravel, or other dense subdivided material, and a layer of fine mortar to a depth of part of the thickness of said materials. The original pipe c may be reinforced.
Patent GB-804784-A (GB)
Title: Composite fuels
IPC: C10L1/18
Filed: 1956-10-04
Abstract: A fuel composition, which on combustion has little tendency to yield soot or other products of incomplete combustion, comprises a combustible petroleum hydrocarbon material and a titanium chloride formate, acetate or propionate.  In examples, fuel compositions consist of kerosene and titanium dichloride diacetate, titanium monochloride triformate or titanium trichloride monopropionate. Specification 725,572 is referred to.
Patent GB-237490-A (GB)
Title: Improvements in or relating to cases or boxes
IPC: A24F15/12
Filed: 1924-12-17
Abstract: 237,490. Holl, C. Dec. 17, 1924. Lids.-A case for cigarettes or the like, wherein the closure-securing device is enclosed within the case, comprises a main panel 5 to which are hinged elements 7, 8 of springy material having upon their inner faces fastening means 9, 10 which are disengaged for opening the case by pressure upon the panel 8. In a modification, one only of the elements 7, 8 is hinged to the panel 5, the other element being fixed. The joint between the elements 7, 8 may be rendered substantially invisible by providing grooves or markings 13.
Patent GB-1089416-A (GB)
Title: Device for the filling of bitumen into paper sacks
IPC: B65B3/04
Filed: 1965-07-16
Abstract: 1,089,416. Packaging and load handling machines. MINERALOL- u. ASPHALTWERKE A.G. July 16, 1965 [April 20, 1965], No. 30395/65. Headings B8C and B8H. Bitumen is packaged in paper sacks by pouring it into the latter while held in containers 12 supported on one, see also Fig. 1 (not shown), of a pair of parallel, equal length rollerways, the containers being removed from the rollerway 2 by a lift-truck 8 and taken to the storage area where their bases are released to hinge open and permit the bags to slide out. The truck then deposits the containers on the other rollerway 1 which has a cross-connection (3) to the rollerway 2 where bags are again placed in the containers, filled and closed by stitching &c. A group of four containers 12 may be mounted on a frame 15, running on the rollerways, and have hinged bases 13 held in place by means 17 (not detailed) releasable by the truck driver. Lift hooks 16 on the containers are engaged by a rail 22<SP>1</SP> on a lift-linkage mounted on the truck, the low position being controlled by a roller 20. To engage a filled frame 15, the truck is driven across the rollerway 1 on a ramp and the rail 22<SP>1</SP> brought beneath the hooks 16. Means 23, 24 tilts the frame 15 and parallel linkage 19 is hydraulically operated to raise it in the air, Fig. 3 (not shown). The truck withdraws, lowers the frame, still tilted, at the storage position and the load is released. The truck returns to deposit the empty container on the rollerway 1 which slopes towards the crossconnection. The latter also slopes towards the rollerway 2 so the containers move by gravity to the filling position.
Patent GB-1340660-A (GB)
Title: Fuel tank vent control valve assemblies
IPC: F02M25/08
Filed: 1972-06-29
Abstract: 1340660 Treating I C engine charge GENERAL MOTORS CORP 29 June 1972 [15 July 1971] 30402/72 Heading F1B [Also in Divisions B8 and F2] A fuel tank vent control valve assembly comprises a fitting 12 for venting fuel vapour from the top of the tank and having a valve seat 61, a vertically reciprocable valve member 62 biased downwardly and movable upwardly by a pivoted float arm 64, and a solenoid 84 having an armature 78 biased to overcome the downward bias on the valve member and engage the member with the seat, energization of the solenoid moving the armature to allow the downward bias to move the valve from its seat and to be controlled by the float arm. The valve member is biased downwardly by a spring 72 and the armature upwardly by a stronger spring 80. The solenoid may be energized when the engine ignition is switched on. Fuel vapour from the fitting 12 flows through lines 14, 23 to lift a diaphragm 26 and a valve 30 to inter-connect fittings 24, 36 whereby the vapour can mix with an air-flow from a line 38 and the mixture be drawn into the engine maifold through a line 40<SP>1</SP>. A second diaphragm and a vacuum line 46 may be provided so that the valve 30 cannot open unless the engine throttle is open. The armature may be constructed as a lever 88, Fig. 2 (not shown) which is rotated to hold the valve against its seat when the solenoid is energized or as a vertically reciprocable plunger (92), Fig. 3 (not shown) arranged vertically below the valve member and the float arm.
Patent GB-1086189-A (GB)
Title: Conveyors
IPC: B65G47/61
Filed: 1966-07-07
Abstract: 1,086,189. Feeding articles to conveyers. DURKOPPWERKE A.G. July 7, 1966 [July 8, 1965], No. 30466/66. Heading B8A. Articles, such as coat hangers, are transferred from an inclined supply rod 2 to a continuously moving suspended carrier 109 by means of a transfer rod 3 engageable by the moving carrier and pivotally about the end of the supply rod in the direction of travel of the carriers. The carriers have arms 113, 114 pivoted between a loaded position 113<SP>1</SP>, 114<SP>1</SP> and an unloaded position 113, 114 in which they engage the transfer rod to pivot the same about an axle 5 with a cam 6 attached thereto. The cam acts on a lever 13 to rotate a shaft 7 which in turn moves a lifting means 4 through a slot 15 in the supply rod 2 to lift the coat hanger 19 over a rigid stop 1 on the rod and release the hanger for transfer to the carrier. The carrier is suspended on a support 102 attached at the upper end to an endless chain 101 and mounting wheels 108 to engage guideways 100<SP>1</SP> of a track 100, which track also mounts the transfer means.
Patent GB-700015-A (GB)
Title: Improvements in cosmetic preparations for protection against radiation
IPC: A61K8/44
Filed: 1950-12-14
Abstract: p.p1-Di-(carboxy-phenyl) urea and its substitution products or derivatives are obtained by reacting p-aminobenzoic acid and its substitution products or derivatives with phosgene. Reference is made to the disodium salt, the dibutyl and polyglycol esters, and the hydroxyethylated amides.  The compounds are used in cosmetic preparations for protection against light (see Group VI).ALSO:Cosmetic preparations, e.g. salves, creams, and lotions, for protection against sunlight and other light, contain p, p1-di (carboxy-phenyl) urea or a substitution product or derivative thereof (see Group IV (b)).  Water-soluble derivatives, e.g. the disodium salt, are used in aqueous solution and may be mixed with lanolin, spermaceti oil, fatty alcohols, petroleum jelly, or the polyesters or salts of polyacrylic acid.  Ester or amide derivatives may be dissolved in ethyl alcohol, glycerine, aromatic hydrocarbons or esters, and may be mixed with a fatty oil or a film-forming substance such as nitrocellulose, acetyl-cellulose, or polyvinyl chloride. Reference is made to the dibutyl and polyglycol esters and to the hydroxyethylated amides. Coloured or odorous substances may also be included in the preparations.
Patent GB-773194-A (GB)
Title: Shutter for photographic cameras
IPC: G03B9/14
Filed: 1953-11-04
Abstract: 773,194. Photographic shutters. GAUTHIER, GES., A. Nov. 4, 1953 [Nov. 6, 1952], No. 30512/53. Class 98(1) In a shutter in which two sets of shutter blades are provided to close the shutter opening in combination although neither set alone closes the whole opening, the blades are operated from a master drive member which operates without reversal of direction during the making of an exposure and through transmission elements each of which alone operates only one blade of each set. As shown, cover plates 4 are slidably mounted in guides behind the supporting plate 1 while shutter blades 5 having circuate portions removed from their inner ends are slidable in guides 3 on the plate 1 and have blades 6 pivoted on them at 7 so that between them they cover the exposure aperture 2, the tails of the blades 6 having slots 6<SP>1</SP> engaging pins 8 on fixed arms 9. A master member 11 on a rotatable axle 10 has secured to it bladecontrolling cams 12, 13 against which are spring-urged pins 37 on bellcrank levers, the other arms of which are slotted at 34<SP>1</SP> to engage the pivot pins 7. The master member driving spring 17 is tensioned by anticlockwise rotation of the member 11 and during this the bell cranks 34 are actuated to open and close the shutter blades 5, 6, the cover plates meanwhile capping the aperture 2, and the master member is latched in the tensioned position by a pivoted lever 21. On depressing the trigger 20, a link 29 connected to lever arms 30, 31 having pin-and-slot connections with the cover plates 4 opens them and thereafter moves the latch lever 21 clockwise to free the master-member to make an exposure. When the master member has made one complete revolution to open and close the shutter, it is arrested by an anticlockwise-urged lever 22 if the trigger has not been released, release of the trigger allowing pin 28 thereon to cam the level 22 clockwise clear of the master member which is then stopped by the latch lever 21. Different exposures may be produced by means of an escapement mechanism adapted to retard the master member. Alternatively the blades 5 may he rigidly mounted on the levers 34, which are preferably controlled by guide means to maintain the planes of movement of the levers parallel and the blades 6 are pivoted either on the blades 5 or on the levers 34. In a modification, the tail of each blade 6 is formed with a gear sector engaging a fixed rack on the plate 1 instead of the pin-andslot connection 8, 6<SP>1</SP>.