baber/WOPTO huggingface dataset:
Patent GB-1129495-A (GB)
Title: Improvements relating to pick-up tubes and methods of producing pick-up tubes
Inventor: TAYLOR STANLEY
Filed: 1966-05-31
Abstract: 1,129,495. Image pick-up tubes; Photoconductive targets. ELECTRIC & MUSICAL INDUSTRIES Ltd. 26 May, 1967 [31 May, 1966], No. 24164/66. Headings H1D and H1K. A method of manufacturing a photoconductive target for a pick-up tube comprises forming a photoconductive lead oxide layer, bombarding the layer with oxygen ions to produce an electron barrier, then bombarding with a material, e.g. nitrogen, to reduce the oxygen concentration and the lateral conductivity close to the surface. Bombardment may be carried out in a D.C. or A.C. field; nitrogen bombardment may be achieved by exposure to a nitrogen atmosphere.
Patent GB-1351906-A (GB)
Title: Solid rubber golf ball
IPC: A63B37/00
Filed: 1972-05-23
Abstract: 1351906 Golf balls ACUSHNET CO 23 May 1972 [1 Dec 1971] 24173/72 Heading A6D [Also in Division C3] Golf balls are formed from a composition comprising polybutadiene, preferably having at least 40% cis-1, 4 structure, and an α, #- ethylenically unsaturated carboxylic acid amide, which is stated to be graft polymerised to the polybutadiene. Suitable amides include acrylamide, methacrylamide, ethacrylamide, α- chloroacrylamide and diacetone acrylamide. The compositions preferably contain a free radical initiator, e.g. dicumyl peroxide, and may also contain silica as filler, titanium dioxide as whitening agent, and an anti-oxidant, e.g. 2,2'-methylene bis (4-methyl-6-tertbutyl
Patent GB-219209-A (GB)
Title: Improvements in or relating to overspeed gears for controlling winding engines for mines
IPC: B66B5/04
Filed: 1923-09-29
Abstract: 219,209. General Electric Co., Ltd., and Woollatt, G. S. Sept. 29, 1923. Overwinding and overrunning, preventing. - Comprises a construction of governor apparatus, for limiting the. speed of winding engines for mines, of the type in which the tension of the governor spring is varied by cam-and-lever mechanism. The present construction is stated to act both in preventing too rapid acceleration at starting and too rapid retardation when approaching the end of the wind. The radially-sliding weights of the governor 1 operate the collar 3 to move the lever 5 against the action of the spring 7 which is adjustable by the hand-wheel 10. At excessive speed the raising of the lever 5 operates a circuit-breaking switch 26 and allows the plunger of a solenoid 30 to drop, thereby operating a brake rod 31 to release the brakes from the braking engine, and at the same time assisting the weight 38 to operate the compressed air relay 36 to start the brake engine and apply the brakes. To prevent too rapid acceleration and retardation, the lower end of the spring 7 is connected to a sliding bar 11 controlled by the cams 13, 15. The cam 15 is geared to the drum shaft to make one complete revolution during the wind. At the commencement and towards the end of the wind the cam 13 contacts with the cut-away portion of the cam 15, thus relieving the pressure on the spring 7 and allowing the governor to operate the switch 26 at lower speeds than the normal. In a modified construction the lever 5 operates a valve which controls the relay 36, the falling of the weight 38, then operating the rod 31 and switch 26. Specifications 20310/12 and 23878/13 are referred to.
Patent GB-393135-A (GB)
Title: Improvements in or relating to advertising or like devices comprising figures
IPC: G09F1/02
Filed: 1932-08-31
Abstract: 393,135. Displaying. TUCK, D. A. and TUCK & SONS, Ltd., R., Raphael House, Moorfields, London. Aug. 31, 1932, No. 24303. [Class 3 (ii).] An advertising device, calendar, wall card, text, &c. comprises a coloured background 1 which supports in front a figure 13 formed as a separate entity. The figure has rigid outlined parts 19, such as head, hands, or feet, of such a thickness that the fabric 11 comprising the rest of the figure stands away from the background, with an air-space in between. The fabric 11 is attached to the parts 19 over a small area only to give a natural waviness or folding to the fabric. Specification 141,896, [Class 93, Ornamenting], is referred to.
Patent GB-632755-A (GB)
Title: Improvements in or relating to corselettes, corset belts and like garments
IPC: A41C1/02
Filed: 1947-09-03
Abstract: 632,755. Corsets; stiffeners. SYMINGTON & CO., Ltd., R. & W. H., and BROOME, J. E. Sept. 3, 1947, No. 24310. [Class 141] A corset or similar body-supporting garment is provided with one or more wide stiffening plates each of which extends downwardly from the upper edge of the garment and extends over a comparatively wide area, being interposed between inner and outer layers of the garment together with one or more additional stiffening layers adapted to extend downwardly below the plate and be secured at the lower edge to the garment fabric. As shown, a plate 14 is secured between the plies of the front panel 1 of a corset with its V-shaped lower edge held by stitching 18, together with an additional layer 15 whose lower edge may be ornamental and held by stitching 19. The plate may be formed of rubber or flexible plastic sheeting and the additional layer of fabric or thin plastic sheeting. The plate may be applied to the back panel or elsewhere in the garment and more than one plate may be used. According to the Provisional Specification, the plate may be formed of leather, buckram or spring steel sheet or of strips joined together edge to edge.
Patent GB-703877-A (GB)
Title: Improvements in or relating to hydraulic fluid composition
Inventor: ESPOSITO VITO
IPC: C10M173/02
Filed: 1951-10-19
Abstract: Tall oil is reacted with ethylene oxide or propylene oxide at elevated temperature and pressure, e.g. about 350-450 DEG F. and 2,000-3,000 p.s.i., the oxide being present initially in an amount of 14-18 mols. per mol. of tall oil.  The tall oil may be purified, prior to reacting, by heating with about 1 per cent. of maleic acid. The reaction product may be treated with charcoal, and heated to expel excess alkylene oxide.  It is used, together with ethylene or propylene glycol and water, in hydraulic fluids. Small amounts of inhibitors, e.g. sodium mercaptobenzothiazole, o-benzoicethanolamine, polymethylsiloxane, 2-amino-2-methyl-1-propanol, and di-isopropylamine nitrite, and light mineral oil may be incorporated.
Patent GB-357340-A (GB)
Title: Improvements in or relating to weighing apparatus
IPC: G01G23/00
Filed: 1930-08-15
Abstract: 357,340. Weighing-apparatus. FITZPATRICK, H. D., 94, Hope Street, Glasgow. -(Naamlooze Vennootschap Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen; 33, Boezemsingel, Rotterdam, Holland.) Aug. 15, 1930, No. 24444. [Class 143.] The platform or other part of a weighing- apparatus subjected to the load or weights is provided with a mounting or mountings comprising spring or other resilient means and a ball or roller bearing or bearings. As shown, the platform 1 of a weighing-scale is supported on compression springs 7 contained within plungers 6, the concave ends of which rest on balls 9 seated in recesses in bearing-blocks 10.
Patent GB-1284676-A (GB)
Title: Cellular polyurethanes
IPC: C08J9/00
Filed: 1970-05-20
Abstract: 1284676 Cellular polyurethanes ATLAS CHEMICAL INDUSTRIES Inc 20 May 1970 [21 May 1969] 24453/70 Headings C3C and C3R Rigid polyurethane foams are prepared by reacting a polyisocyanate with a polyether containing at least 3 OH groups and having a hydroxyl number of 350 to 650 in the presence of a foaming agent and 0À05 to 0À5% by weight based on the total weight of polyisocyanate and polyether, of a finely divided, solid material insoluble in, and non-reactive with, the polyurethane foam forming components, the solid material having a particle size of 0À01 to 250 microns. Conventional catalysts and surfactants may be incorporated in the reaction mixture. The solid material is suitably mixed first with the polyether and this mixture is then reacted with the polyisocyanate. Exemplary of the solid materials are asbestos, activated carbon, diatomaceous earth, barytes, litharge, aluminium flakes and powder, flake graphite, bentonite, montmorillonite, atapulga clay, calcium silicate, magnesium carbonate, glass flakes and fibres, mica, hydrated calcium silicate, talcum, silica, mineral black, titanium dioxide and lead oxide. In a typical example toluene diisocyanate is reacted with a mixture of polyoxyethylene (10) sorbitol, an organo-silicon surfactant, a mixture of triethylene diamine and dimethylethanolamine as catalyst, water, asbestos of average particle size 22 microns and trichlorofluormethane to form a fine-celled polyurethane foam.
Patent GB-882382-A (GB)
Title: A control valve for fluid-operated braking systems
IPC: F16K11/16
Filed: 1959-07-16
Abstract: 882,382. Fluid-pressure brakes. FABBRICA ITALIANA MAGNETI MARELLI S.p.A. July 16, 1959 [July 16, 1958], No. 24489/59. Class 103 (1). In a control valve with two sections for fluid-operated braking systems, two valve arrangements are controlled by a single pushrod 8, operatively connected to a brake foot lever (not shown) which acts on a rocker plate 9 to control valve arrangements 25, 24, the rocker being provided with an extension at one end to accommodate an advance device in the form of a spring 36 which acts to operate the righthand valve arrangement before the other valve arrangement and movement of the push-rod 8 causes depression of a spring-loaded ram 32 to close an electrical circuit when ram 32 depresses a push-button 38 controlling the contact device 30 to close the signal and stop lamp circuit. Depression of rocker plate 9 causes section 2 to operate before section 1, which is an advantage for tractor-trailer braking systems, and regulating springs 16, 17 are depressed to move plungers 181 and blocks 25 downwardly to open valve members 24 and permit flow of compressed air from reservoir connection 23 to brake cylinder pipe connection 21. When the brake is released, the plungers 181 are raised and the valve members 24 are closed and exhaust of air from chamber 20 is permitted through hollow bore 251 of block 25 to atmosphere.
Patent GB-888933-A (GB)
Title: A six-phase converter
IPC: H02M7/06
Filed: 1958-07-30
Abstract: 888,933. Converting. LICENTIA PATENTVERWALTUNGS-G.m.b.H. July 30, 1958 [Aug. 20, 1957], No. 24550/58. Class 38 (2). A six-phase converting system comprises two phase - displaced star - connected transformer secondary windings supplying rectifying valves or contacts but not interconnected by an interphase transformer, the connections between the star points 3, 4, the output points 5, 6, and the D.C. bus-lines 1, 2 being such that the equalizing current containing 3rd and higher harmonics which circulates in the system has to circulate an area F bonded by the rectifier supply lines twice. The inductance of this closed loop is thus four times that which would have arisen had the connections been such as to provide a single-turn closed loop and hence the circulating currents minimized. The connections may be provided with ferromagnetic cores to further increase the inductance.
Patent GB-604605-A (GB)
Title: Improvements in or relating to the grinding of scissor and like blades
IPC: B24B3/52
Filed: 1945-09-22
Abstract: 604,605. Hollow-grinding scissor and like blades. JACKSTEAD ENGINEERING CO., Ltd., and JACKSON, R. E. Sept. 22, 1945, No. 24611. [Class 60] [Also in Group XIV] A scissor or like blade has the shearing edge in a plane at right angles to its pivot axis and the blade is hollow-ground, the rear portions being ground to a greater extent at the point end of the blade than at the pivot end. The shearing edge is preferably a straight line. A method of grinding such a blade comprises placing a blade blank with its shearing edge parallel to the axis of a grinding-wheel operating on a portion only of the inner face of the blank at any given instant, traversing the blank in the line of the shearing edge, and turning or partially rocking the blank about the shearing edge in one sense only during that traverse and in the opposite sense during the return traverse. The inner face of the blank is presented to the grinding-wheel with the centre of hollow at the pivot end of the blank symmetrical with respect to the position of the pivot, and during its traverse towards a position in which the point end of the blank is presented to the grinding-wheel, the blank is turned or partially rocked in one sense only so that the rear portion of the inner face is ground to a progressively increasing depth. A blank 10 is held in a die-plate 11 recessed to fit the length and cross-section of the blank, and carried by a magnetic chuck 13 mounted on a rocking bed 14 having a cylindrical undersurface dovetailed into a concave surface of a slide 20 which is reciprocated by hydraulic means (not shown) to carry the work under the grinding- wheel. To rock the work during its traverse, a rod 25 secured to the bed 14 and projecting through slots in the slide 20 and machine frame 23 engages at its lower end a slot 26 in a bar 27 which is adjustably inclined to the direction of traverse.
Patent GB-360091-A (GB)
Title: Improvements in film-feeding mechanism for cinematograph machines
IPC: G03B1/42
Filed: 1930-08-18
Abstract: 360,091. Kinematograph apparatus. HEISER, C. R., 71, Aldersgate Street, London. Aug. 18, 1930, No. 24658. [Class 97 (i).] In feed mechanism of the type comprising endless chains carrying teeth engaging the film perforations, the chains are accommodated in slots in the base of the film gate from which only the teeth project. As shown, the chains 3 pass over sprockets 10, 11, of which one or both are driven intermittently; the chains pass through slots 2 in the base 1 of the film gate, and carry teeth 4 on lateral extensions of the side-plates or on separate plates 6 carried by the chain. The plates 6 are accommodated in grooves 7 shallower than the slots 2 and opening from them. Presser bars 8 having grooves 9 to receive the teeth may be carried by a hinged member 12.
Patent GB-1335229-A (GB)
Title: Automatic weather board for a door or the like
IPC: E06B7/20
Filed: 1971-04-19
Abstract: 1335229 Draught excluders ETABS B DUMENIL SA 19 April 1971 [27 March 1970] 24754/71 Heading E1J A draught excluder comprises a housing 1 disposed at the bottom of a door and containing a draught excluder strip 23, an actuating member 17 projecting from the housing being longitudinally movable to cause biassing means to lower the strip. Member 17 has its sides inclined to the longitudinal direction for engagement with the door jamb and is connected to a rod 9 which slidably carries the ends of pivot linkages connected to the strip 23. Springs 31, 32 transmit movement of the rod 9 to the linkages to lower the strip on depression of member 17. Spring 18 raises the strip on release of member 17.
Patent GB-518499-A (GB)
Title: Process of and apparatus for applying a nitrocellulose coating
IPC: B05D3/04
Filed: 1938-08-23
Abstract: 518,499. Coating processes. BRIGHT, E. M. Aug. 23, 1938, No. 24840. [Class 95] In a process of applying a nitrocellulose coating to an article, the solvent is removed from the coating by applying thereto a fluid medium having an attraction for the solvent of said coating, and the process includes the step of impeding evaporation of the solvent, so as to allow any solvent remaining within the coating to become uniformly dispersed throughout the coating, the coated article being finally completely dried. An apparatus for carrying out the process is shown, comprising a cabinet 10 provided with a rotary support 12 to carry the articles 24 which have already been coated with a solution of nitrocellulose. The liquid 28 is one having an attraction for the solvent of the coating, and gasoline and methanol are stated to be suitable. As the support 12 is slowly rotated, each article 24 passes through the liquid 28 where some of the coating solvent is removed, then into a layer of vapour B, where removal of the solvent is checked and the remaining solvent is dispersed throughout the coating, then into air C, and again into vapour B. This sequence is repeated, by continued rotation of the support 12, until the coating is sufficiently cured. The article may be finished by providing a sleeve 42 and stud 50.
Patent GB-671968-A (GB)
Title: Polythene dispersions
IPC: C08J3/03
Filed: 1949-09-28
Abstract: Polyethylene dispersions are prepared by passing molten polyethylene with water through an emulsifying device such as a colloid mill or homogenizer at a temperature above 115 DEG  C. at a pressure sufficient to keep the water in the liquid state, and then releasing the pressure.  Preferably the dispersion is rapidly cooled after releasing the pressure.  The process may be operated continuously. The water employed preferably contains an emulsifying agent, such as the sodium, potassium, and triethanolamine salts of stearic and palmitic acids, which may be formed in situ by incorporating the acid in the polyethylene and dissolving the basic compound in the water. The polyethylene dispersions may be used to coat paper to waterproof it, and to stiffen fabrics.
Patent GB-262885-A (GB)
Title: A new or improved lead-in tube for wireless apparatus
IPC: H01R31/00
Filed: 1925-10-07
Abstract: 262,885. Rushton, F. C. Oct. 7, 1925. Connectors.-A lead-in connector for wireless and other purposes comprises a pair of sockets connected by or formed from a rod or tube b extending through a tube a of vulcanite, glass, mica, &c. at the ends of which the sockets are mounted. The end caps c may be formed by flanging over the ends of the tube b or may be eyelets extending into the ends of the tube a. Plugs d attached to the aerial and to the receiving apparatus are inserted into the sockets. By a suitable arrangement of similar plugs and sockets ! l the aerial may be connected to the earth lead k either inside or outside the building.
Patent GB-1140951-A (GB)
Title: Improvements in and relating to locks
IPC: E05B45/12
Filed: 1966-06-06
Abstract: 1,140,951. Locks. F. W. COVENEY and B. M. HASTINGS. 6 Sept., 1967 [6 June, 1966], No. 25015/66. Heading E2A. [Also in Division G4] A lever tumbler lock 1 is .provided with a micro-switch 15 connected in an alarm system (see Division G4). The contacts 13, 14 of the switch are normally closed via contact 11 by means of protector 2 being pivoted about pivot 3 to contact stop 10. An unauthorised attempt to open the lock causes protector 2 to rotate to the position shown, thus opening contacts 13, 14 to actuate the alarm.
Patent GB-955388-A (GB)
Title: A new or improved drilling machine for operating on paper or like material
Inventor: CHESNEY ALBERT WILLIAM
IPC: B26D7/01
Filed: 1959-07-21
Abstract: 955,388. Drilling machine details. SOAG MACHINE TOOLS Ltd. June 27, 1960 [July 21, 1959], No. 25022/59. Heading B3C. In a machine for drilling paper &c. the worktable is moved past the drill head in a step-bystep manner, such movement being controlled by the movement of the head towards and away from the table. The machine comprises a base 1, Fig. 1, a horizontally movable table 2, and a vertically movable drill head 3. A rack 13, Fig. 2, carried by a spring-urged, air buffered slide 14 secured to the head, is moved by a pinion 12 secured to a shaft 9, the latter being driven by a motor 5, through a toothed belt 7, and a toothed pulley 8. An electromagnetic clutch 10, 11 connects the pulley 8 to the shaft and the clutch is disengaged by a microswitch operated by an adjustable knob 15 on the slide which engages a button 16, when the slide is in its lowermost position. A chainwheel 19 on the shaft drives a chain 20 and a sprocket 21, the latter having a striker 22 which engages a lever 23, Fig. 3, connected to a spring-urged desent 28, which engages a rack 30 on the table 2 to control the step-by-step movement of the table. A spring-urged latch 32 also engages the rack 30, actuates a second mircoswitch 35 for re-engaging the clutch during automatic operation. In operation, the clutch is engaged, and the head is moved towards the table 2 by rotation of shaft 9, until the knob 15 strikes the button 16 and disengages the clutch, thus stopping the downward movements of the drill head. The head is moved upwardly by springs 17, and the striker 22 engages lever 23 carried by a pin 25, and a second spring-urged lever 24 secured to the pin engages a member 27 secured to the detent 28. The latter is moved against a spring 31, out of engagement with the rack 30, and the table is moved to the left until the detent is spring-urged into the next tooth on the rack. For automatic operation to drill a series of holes, the latch 32 engages a tooth in the rack 30, and when the table is moved to the left, the latch is pulled along with it, the switch 35 is actuated and re-engages the clutch, and a pin 33 on the latch rides up a cam 37, is disengaged from the rack, returns to its original position in engagement with a different tooth, and the work cycle is repeated. The voltage in the coil of the clutch is varied by means of a rheostat, thus controlling the supply torque to suit the particular drill being used.
Patent GB-1392413-A (GB)
Title: Polymerization catalyst
IPC: C08F4/68
Filed: 1973-05-24
Abstract: 1392413 Polymerisation catalyst NAPHTACHIMIE 24 May 1973 [25 May 1972] 25023/73 Heading B1E [Also in Division C3] An olefin polymerisation catalyst is prepared by reacting magnesium, one or more mono-halogenated hydrocarbons and a halogen and/or organic derivative of a transition metal of sub-group IVa, Va or VIa of the Periodic Table in a state of valency of at least four to produce a solid compound of magnesium and of the transition metal containing the transition metal in a lower state of valency than in the original derivative, and bringing the solid compound into contact with an oxidising agent to increase the valency of the transition metal. The transition metals comprise titanium, vanadium, chromium, zirconium, niobium, molybdenum, hafnium, tantalum and tungsten. In the Examples the catalysts are prepared by reacting powdered magnesium, titanium tetrachloride, n-butyl chloride, n-propyl titanate and vanaduim tetrachloride in the presence of iodine and nheptane and oxidising the solid compound in suspension in n-heptane with air, oxygen, iodine and chlorine. The compound may be subjected to physical treatment during or after oxidation e.g. crushing or elutriation e.g. granulometric selection by an air stream.