baber/WOPTO huggingface dataset:
Patent GB-580402-A (GB)
Title: Improvements in or relating to circuit arrangements employing electron discharge devices utilising velocity modulation
IPC: H01J25/02
Filed: 1942-09-02
Abstract: 580,402. Velocity-modulated tubes. BULL, C. S. Sept. 2, 1942, No. 12424. [Class 39 (i)] In a reflex tube of the kind in which oscillations to be mixed are applied to the same rhumbatron or to different rhumbatrons, amplified shot noise is reduced by making the time of flight of an unaccelerated electron from a rhumbatron to the reflecting field and back either less than one-sixth of an oscillation or within one-sixth of a whole number of oscillations. The transit time from the rhumbatron towards the cathode and back for a third time to the rhumbatron is preferably also made within one-sixth of a whole number of oscillations.
Patent GB-231037-A (GB)
Title: A new and improved surgical catgut ligature
IPC: A61L17/08
Filed: 1924-05-21
Abstract: 231,037. Merson, G. F. May 21, 1924. Ligatures.-A ligature is made by incorporating silk, linen, cotton, or other organic material or fibre, or a silver or other metallic wire with catgut during the twisting of the catgut into thread so that the two materials become intertwined with one another.
Patent GB-166006-A (GB)
Title: Improvements in or relating to suction cleaning apparatus
IPC: A47L5/32
Filed: 1920-05-06
Abstract: 166,006. Hoover Suction Sweeper Co., Ltd., (Hoover, H. E.). May 6, 1920. Vacuum cleaning-apparatus. - A suction sweeper is provided with a hose-sleeve G<4> which passes through an aperture in the front wall of the suction chamber and engages with an elliptical opening A<7> in the dividing wall between the suction and the fan chambers. The sleeve is formed with a slot which engages a pin G<6> secured in the front wall flange G<2> which surrounds the upper portion of the elliptical opening. When the cleaning-hose is not in use, the aperture in the front wall is closed by a plate.
Patent GB-623669-A (GB)
Title: Manufacture of glycol esters of terephthalic acid
Inventor: FARTHING ALAN CHARLES
IPC: C08G63/42
Filed: 1947-05-09
Abstract: Ethylene glycol esters of terephthalic acid are prepared by reacting ethylene oxide with terephthalic acid at elevated temperature in an aqueous medium and in the presence of a small proportion of a terephthalate, e.g. an alkali metal or amine terephthalate.  The amount of terephthalate used is sufficient to provide a ratio of cations to molecules of terephthalic acid of between 1 : 5 and 1 : 2. In examples: (1) ethylene oxide is passed into a mixture of terephthalic acid, potassium hydroxide and water and the bis-(b -hydroxyethyl)-terephthalate crystallized from the solution by cooling; (2) ethylene oxide is passed into a mixture of terephthalic acid, pyridine and water; and (3) ethylene oxide is forced by means of compressed nitrogen into a mixture of terephthalic acid, sodium hydroxide and water contained in an autoclave.  The product of the last example is purified from contaminating b -hydroxyethyl hydrogen phthalate by suspending in water, adding sodium carbonate, filtering and crystallizing the solid from boiling water.  b -Hydroxyethyl hydrogen phthalate is obtained by acidifying the sodium carbonate washings.
Patent GB-624500-A (GB)
Title: Improvements in load limit warning devices for jib cranes
IPC: B66C23/90
Filed: 1947-05-09
Abstract: 624,500. Jib cranes. RANSOMES, SIMS, & JEFFERIES, Ltd., and WILLIAMS, A. H. May 9, 1947, No. 12641. [Class 78 (iv)] A warning device for indicating when the maximum permissible load at any position of the jib is being exceeded which device deflects the hoisting rope from its line of action and operates a switch controlling a signal circuit or motor, the switch being an electric switch, one contact of which, responsive to and dependent on the tension of the hoisting rope for effecting closure of the switch, is attached to, and movable with, the jib of the crane, this contact oscillating relatively to the other contact which ensures closure of the circuit before overloading at any angle, this latter contact being in a fixed position and shaped eccentric to the pivot about which the movable contact oscillates so that the distance between the two contacts is greater when the jib is at its maximum angular height than when the jib is horizontal. As shown in Fig. 4, the jib 2 has a tail pulley 19 and is fulcrummed on a shaft 3 which carries a fixed contact 16 eccentrically mounted with respect to the shaft. The hoisting cable 20 passes under fixed pulleys 4 and 5 and over a movable pulley 6, the pulleys being supported by a bracket 1 attached to the iib. The pulley 6, Fig. 2 is mounted on a spindle 9.in a movable jaw 10 which carries a contact 14. A member 11 fixed to the jaw slides in a guide 12 fixed to the bracket 1 and against a spring 13. On increasing the tension in the cable, the pulley 6 is thus moved inwards against the action of a spring 13. At maximum load the contact 14 touches the member 16 and closes the circuit. The distance through which the contact has to move increases with the angle of the jib, and the tension can therefore be correspondingly increased and hence the maximum load possible. A micro switch can be incorporated as an alternative switch.
Patent GB-897248-A (GB)
Title: Overhead conveyors
Inventor: LENSING RUDOLF
IPC: B65G9/00
Filed: 1960-04-08
Abstract: 897,248. Overhead travelling cranes. SCHARF G.m.b.H., HEINRICH. April 8, 1960, No. 12658/60. Classes 78 (4) and 104 (2). A cable-operated overhead monorail conveyer has a cable-drum 27, Fig. 1, connected to the trolleys 17, 18 which carries spare cable and receives surplus cable when the driving cable is shortened. As described, the trolleys are connected by a telescopic member 25 and each carries a hoist. The upper and lower surfaces of adjacent rails are connected by ball- and-socket joints 7, 6, Fig. 3, respectively. The lower ball is rigidly attached to the rail by a strap 4, whilst the upper ball is mounted on a strap 8 slidable in a fixed guide 9. The two sockets may each comprise two similar complementary parts secured together and to the rail. A distance-piece may be interposed between the parts.
Patent GB-606640-A (GB)
Title: Direct production of ductile magnesium
IPC: C22B26/22
Filed: 1942-09-08
Abstract: Magnesium of at least 99.7 per cent purity is obtained from magnesia-containing material by degassing said material by heating in an oxidizing atmosphere at a temperature between 650 DEG  and 1000 DEG C. and then charging said material with ferro-silicon into an externally heated retort maintained at a temperature of 1,150 DEG -1,200 DEG C. maintaining the charge under vacuum until the metal has been distilled and condensed in coherent ductile form within a portion of the retort, and thereafter withdrawing the condensed metal directly from the hot retort in the presence of air.  Air and gases are rapidly evacuated from the retort to provide a pressure of less than 0.5 mm. of mercury in the charge during the initial stage of the heating, before any substantial evolution of magnesium vapour, the pressure then being maintained substantially constant while the magnesium is distilled.  Specifications 606,636, 606,637 and 606,641 are referred to.
Patent GB-453715-A (GB)
Title: Cotton gin
IPC: D01B1/06
Filed: 1935-04-29
Abstract: 453,715. Cotton gins. PLATT BROS. & CO., Ltd., Hartford Works, and LEECH, I., 197, Abbey Hills Road, both in Oldham. April 29, 1935, No. 12702. [Class 120 (i)] In a double cotton gin which combines two interconnected single action Macarthy gins in the one apparatus and comprises two ginning rollers r, Fig. 1, fixed knives d, moving knives e in the form of an oscillating beater mounted between the rollers r and pusher boards b reciprocating over seed grids c, the moving knives e and boards b operating in sequence, the moving knives e are flexible and are supported at their ends by rigid arms e<1> and intermediately by rods f screwed into blocks f<1> fixed on the beater shaft e<2>, Fig. 5, and are thereby flexed or adjusted as necessary relative to the rollers r. The knives e are mounted on the beater shaft e<2> and are operated by a lever arm e<3> fixed thereon, the arm e<3> being adjustably connected by a slotted bearing e<4> to a rod e<5> which is reciprocated by a cam or eccentric e<6> from the main shaft m. The pusher boards b are operated from levers b<1> mounted on an oscillating shaft b<2> through an eccentric b<3> mounted on the shaft b<4>, Fig. 6. The feed hopper a is formed with a domed base al and leather side flaps a<2>. One ginning roller r is driven through the belt n direct from the main shaft m, Fig. 3, the other roller r and the shaft b4 being driven through belts q<1> passing round double grooved pulleys q, 0<2>, q<2>, q<3>. A stripper roller a is provided for each ginning roller. The seeds fall through the grids c into the trough g and are delivered by a scroll h to a shoot i.
Patent GB-542676-A (GB)
Title: Improvements in or relating to time delay mechanism for actuating electric switches
IPC: G04F3/06
Filed: 1940-08-08
Abstract: 542,676. Actuation of switches. PARTRIDGE WILSON & CO., Ltd., and WILSON, H. G. A. R. Aug. 8, 1940, No. 12728. [Class 38 (v)] A time delay device for switches comprises an actuating member on a drivable shaft advanced from a normal position, for example by engagement with a synchronous motor, to cause actuation of a switch after a time period determined by the length of travel, the arm returning to normal automatically. The actuating member on its shaft is moved into driving engagement with the motor by being mounted on an armature through yielding means such as spring arms. In the example, for regulating the charging of batteries, the charging current passing through a solenoid 13 attracts an armature 11 pivoted at 19 and bearing a disc 1 on spring arms 6 at its free end. The disc is free to rotate on a pivot 5 and is spring-urged in a clockwise direction as shown. Teeth 8a on the spring drum 8 are adapted to engage, when the armature 11 is attracted, with a pinion 17 of a slow-running synchronous motor 16 which drives the disc, together with a switch-actuating arm 2 anticlockwise to engage a switch 4, which may cut off the charging current, and hence release the armature 11 and also open the circuit to the motor 16. The length of time of charging may be adjusted by altering the position of the arm 2 on the disc 1. On release the disc returns to a normal position determined by a stop la abutting against the armature 11. The example also shows means for permitting a high amperage current at the start of charging, prior to changing to a low current for a period determined by the delay device. This includes a further solenoid 38 which during the first period holds an armature 36 carrying an adjustable pressing member 35 away from a spring contact 33 which co-operates with a fixed contact 32. When the battery voltage rises, the armature is released, the contacts 32, 33 close completing the circuit to the motor 16, to start the slowcharge period.
Patent GB-1200601-A (GB)
Title: Urea formaldehyde resins
Inventor: BROADBENT DAVID STANLEY
IPC: C05C9/02
Filed: 1967-03-17
Abstract: 1,200,601. Urea formaldehyde resins. UNILEVER Ltd. 18 March, 1968 [17 March, 1967], No. 12779/67. Heading C2C. A urea formaldehyde fertilizer resin possessing a urea nitrogen content of less than 8% by wt., a cold water insoluble nitrogen (C.W.I.N.) content of 15À25% by wt., a hot aqueous buffer insoluble nitrogen (H.W.I.N.) content from 3-8% by wt. and'an activity index (A.I.) from 65-90, is obtained by reacting 1 to 1À5 moles urea with 1 mole aqueous formaldehyde solution for 2-18 hours at a temperature of 5-35‹ C. and a pH of 4À5-6À5, subsequently neutralizing the reaction system and drying the reaction product under such conditions of time and temperature that the derived resin possesses the required cold water insoluble nitrogen content and hot aqueous buffer insoluble nitrogen content. The neutralization operation is suitably effected by adjusting the pH of the reaction mixture to 7-8À5 with alkali; the drying operation may be effected by (a) drying in ovens through which air is circulated at the required temperature, (b) drying in vacuum ovens, or (c) spray-drying.
Patent GB-821104-A (GB)
Title: Improvements in or relating to a substituted phenyl urea and herbicidal compositions
IPC: C07C275/28
Filed: 1956-04-26
Abstract: The invention comprises 1-(2-hydroxyethyl)-1-methyl-3-phenylurea.  In an example the above compound is prepared by heating methylethanolamine with phenyl isocyanate in xylene under reflux, the hot solution being treated with activated carbon and filtered.  The desired product which crystallizes out when the solution is cooled is washed with n pentane and recrystallized from benzene.  The solubility of the compound in water, acetone, ethyl ether, chloroform and dimethylformamide is mentioned.  The product is employed in herbicidal compositions (see Group IV).ALSO:A herbicidal composition comprises 1-(2-hydroxyethyl) - 1 - methyl - 3 - phenylurea (see Group IV (b)) together with a carrier or diluent, said substituted urea being present in the said composition in an amount sufficient to exert a herbicidal effect.  Solid carriers mentioned include talcs, natural clays, pyrophillite, diatomaceous earth and walnut shell, wheat, redwood, soyabean and cottonseed flours.  Solvents mentioned include alkylated naphthalene, dimethylformamide and cresol.  The substituted phenylurea may be employed as a dispersion in oil or water.  Surface-active agents may be incorporated in dust or liquid compositions and may be anionic, cationic or non-ionic, p  e.g. sodium or potassium oleates, amine salts of oleic acid, e.g. morpholine and dimethylamine oleates, sulphonated animal and vegetable oils, sulphonated fish and castor oils, sulphonated petroleum oils, sulphonated acyclic hydrocarbons, the sodium salt of lignin sulphonic acid, sodium alkyl naphthalene sulphonates and other wetting agents listed in "Soap and Sanitary Chemicals," August, September and October, 1949.  Fertilizers, other herbicides and insecticides and fungicides may be incorporated in the compositions. In examples: 1 - (2 - hydroxyethyl) - 1-methyl-3-phenylurea is employed as active ingredient in a powder adapted for dispersion in water for spray application comprising fuller's earth, sodium lauryl sulphate and methyl cellulose (II); a dusting powder comprising talc as carrier (III); a concentrate for dilution with oil, water or a mixture of oil and water comprises as carrier an alkylated aryl polyether alcohol and fuller's earth, and is dispersed in alkylated naphthalene oil (IV); an oil composition, which is emulsified with water comprising a long-chain fatty alcohol sulphate, the sodium salt of lignosulphonic acid and kerosene (V); pellets for dispersion in water comprising as carrier sodium sulphate, the sodium salt of isopropyl naphthalene sulphonate and bentonite (VI).
Patent GB-592159-A (GB)
Title: Improvements in forced draught apparatus for boiler and other furnaces
IPC: F23L17/00
Filed: 1945-05-24
Abstract: 592,159. Boiler furnaces. WHITTAKER, W., and WORTHINGTON, J. V. May 24, 1945, No. 12971. [Class 51 (i)] A motorized fan unit fixed to a plate which is hinged to a furnace front plate and which has an opening coinciding with the ashpit opening, supplies air through the firebars of Lancashire or similar type boilers. Fixed to the plate E, which is hinged to the front plate at F and fastened by the latch M operated by the handle M', is a box housing in which is mounted the electric motor K and screw fan K'. Dampers N and O are fitted at the inlet end of the housing damper N being used to regulate the air supply by means of handle N<2> and damper O being closed automatically by the opening of the firedoor, thus affording protection against "blowback." In a modified arrangement the damper N may be automatically controlled by a reversible geared motor or solenoids operated to maintain a "balance" over the grate through a sensitive pressure diaphragm and mercury switch or other convenient means. Adjustment of the air supply may also be obtained by controlling the speed of the fan. Protection for the housing is provided by a guard plate above and a wire guard over the inlet.
Patent GB-243397-A (GB)
Title: A new or improved process for polishing and/or finishing surfaces of, or coated with, celluloid or celluloid preparations
IPC: C09G1/00
Filed: 1924-05-27
Abstract: Cleansing, abrading, and polishing compositions for rubbing down and finishing celluloid or celluloid-coated surfaces consist of a mild solvent of celluloid, a fine grit, and a liquid lubricant without solvent or chemical action on the celluloid or the grit and solvent. In an example 4 quarts of methylated spirits or turpentine or 2 quarts of each, 4 quarts of vienna chalk, and 1 quart of linseed oil or paraffin oil are mixed, and applied by a rag, rubber, bob, or cotton wool.
Patent GB-107305-A (GB)
Title: Improvements in Variable Speed Gearing.
Inventor: LEFFLER ARTUR
IPC: F16H29/04
Filed: 1916-09-14
Abstract: 107,305. Leffler, A. Sept. 14, 1916. Ratchet gearing.-In variable-speed gearing of the type in which an oscillating swash-plate carried on a driving-disk is connected by links to oscillating segments carrying friction pawls driving the driven shaft, reciprocating rods 50 engage clutch segments 5 arranged over a series of wheels 3 on the driven shaft 2. For reversing the direction of drive, a sliding rod 34 having arms 35 may be adjusted to engage arms 30, 31 connected to cams 27 which have lugs 28, 29 which may thus be brought into engagement with sliding frames 24 so that a spring 16, bearing on a clutch block 9 pivoted in each segment 5, or a spring 17 bearing on a block 8 may be put under compression to rotate the corresponding block out of engagement with wheel 3 against the action of springs 15 or 18 The other clutch block then acts as a one-way clutch and drives the shaft 2 in the required direction. The invention is stated to be applicable to traction-engines, automobiles for carrying guns and for other purposes, motor-cycles, &c., and for driving machines from electric motors, internalcombustion engines, &c.
Patent GB-996192-A (GB)
Title: Improvements in and relating to self-propelled load handing machines
IPC: B66C9/18
Filed: 1961-07-04
Abstract: 996,192. Rail vehicle undercarriages; vehicle stands. MASCHINENFABRIK AUGSBURGNURNBERG A.G. July 4, 1961 [June 27, 1961], No. 13106/64. Divided out of 996,191. Headings B7J and B7L. A travelling crane moves upon four bogies 2 having rail wheels 3. The rails 10 have wedgeshaped grooves 9 and the crane has four feet 8 of complementary shape to the grooves. The bogies 2 are mounted on eccentrics 4 which may be rotated from a driving mechanism 7 by a rack 6 and lever 5 when the vehicle is stationary, whereby the bogies are raised a small amount, relative to the body, and the weight of the vehicle is taken by the feet 8 resting in the grooves 9.
Patent GB-422161-A (GB)
Title: Method and means for securing the adhesion of driving belts on pulleys
IPC: F16H55/38
Filed: 1934-05-01
Abstract: 422,161. Pulleys. BIRNBAUM, J., 5, Calle Bertrßn, Barcelona, Spain. May 1, 1934, No. 13123. [Class 80 (i)] The surface of a pulley is coated with a thick paint or plastic substance, or with paint covered in turn by a plastic layer, which when dry forms the driving surface. Alternatively, the pulley may be coated with one or more layers of paper, linen or other cloth, leather, indiarubber or other material. The pulleys may be of metal or wood. Reference has been directed by the Comptroller to Specifications 12970/93, 22053 /06, [both in Class 80], and 195,985, [Class 80 (i)].
Patent GB-131238-A (GB)
IPC: E02F3/02
Abstract: 131,238. Bush, J. J. Feb. 15, 1919. Addition to 123,371. Diggers.-The following modifications of the manually-operated digging-machine described in the parent Specification are described. The sides of the frame of the machine are made parallel and the machine is supported on wheels with wire spokes. A spade with a longer blade may be used, and the trough L in which the soil is examined is provided with a loose back board which may be inserted in grooves L<1> or L<2> according as the long-bladed spade or an ordinary spade is in use. When the long-bladed spade is in use it is depressed by the operator standing on the tread-boards k until the capstan wheels p have moved round sufficiently to permit the bars o to be inserted in the openings p<1> for operating the racks r. The tread-boards are formed of two boards k, k , and are provided with reciprocating spring-controlled liners l engaging the tread of the spade. The racks r ride in their grooves on rollers and are lifted after depression by the tread-boards swinging back to their original positions under the action of the counterbalance weights n<3> assisted bv the operator standing at the weighted end of the boards. Stops are provided to limit the movement of the racks, and shock-absorbers may be interposed between the tread of the spade and the ends of the racks. A board x<2> is provided to protect the operator from the swing of the collar A<2>. The arm giving the oscillatory movement to the spade shaft is formed as a metal tube encircling a rod secured to the band A<2>. A hole j<3> is formed in the end of the spade for the insertion of a detachable handle. The fulcrum on which the spade pivots is formed by a block C, D<1> D<3>, D<4>, D<5>, D<6>, on which the lower portion D<3>, D<4>, D<5>, D<6> is removable. The nose portion D<3>, D<4> against which the spade first bears in the lifting operation are faced with metal. The angle-irons F<1> along which the shoulders of the spade slide in the lifting operation are permanently fixed in position and upper parts F<2>, F<3> are detachably mounted as extensions to these. When the shoulders of the spade have reached the top G of the irons, the handle is released and allowed to engage the shaft p<4> by which it is held in an horizontal position. A rod for cleaning the spade is fitted.
Patent GB-580314-A (GB)
Title: Improvements in or relating to toy or advertising figures having movable parts
IPC: A63H7/00
Filed: 1944-07-10
Abstract: 580,314. Toys. MERIAN, E. July 10, 1944, No. 13182. [Class 132 (iii)] [Also in Group XVIII] A toy figure comprises connecting members such as cords 12, 13, 14, 15 engaging with and extending within movable parts of the figure, the cords being connected to a common actuating member which is normally positioned to tension the cords but which can be operated to release tension in one or more of the cords so as to actuate the movable parts. In Figs. 1 and 2, four cords run from the head of a camel through members 4 with rounded ends simulating the neck, through the four legs and a base 11 to a sleeve 16 within which is a spring-pressed tube 17. By pressing in the tube 17, all the cords are released, and according to the position of the sleeve 18, one or more of the cords is released to produce grotesque movements. In Fig. 5, cords run from the head and tail of a horse through the legs and under the base to a spring- pressed disc 29, movement of which causes movement of the horse. In Fig. 11, cords from the legs of a giraffe pass through a vertical disc 63 to a control disc 64.