baber/WOPTO huggingface dataset:
Patent GB-866833-A (GB)
Title: Improvements in or relating to control-gear for hydraulic circuits
IPC: B66F9/20
Filed: 1958-06-27
Abstract: 866,833. Hydraulic control systems. LANSING BAGNALL Ltd., and ARNOT, A.E.R. June 22, 1959 [June 27, 1958], No. 20767/58. Class 69 (2). [Also in Group XXX] An hydraulic control system for a fork-lift truck comprises electromagnetic means for controlling the speed of a motor so that a pump driven by the motor has more than one rate of delivery, a control valve 106, 136, 109 between the pump and devices 28, 31, 34 utilizing the delivery, and connections 45, 46 between the electromagnetic means for controlling the motor and the control valve operative to actuate the means in accordance with the rate of utilization selected by the control valve. The truck has fork arms 33 which are movable horizontally by a piston-arid-cylinder device 28, vertically by a piston-and-cylinder device 34, and tiltable by a piston-and-cylinder device 31. The delivery from the pump is selectively directed to the devices 28, 31, 34 by levers 37, 36, 35, respectively, operating the valves 106, 136, 109 in a casing 44. The pump is driven by the motor which has resistances connected either in series or shunt under the control of microswitches 45, 46 so that the motor has two speeds and the pump a high and low rate of delivery, one or both of the micro-switches being operated by plates which are rotatably supported on bars 80, 81 and rocked by the movement of the levers 36, 35, 37 about a bar 40. In operation, when the fork arms are to be moved horizontally forward, the lever 36 is rocked forwardly to operate its valve 136 and actuate the micro-switch 46 to start the motor, further movement of the lever actuating the switch 45 so that the motor runs at its highest speed and maximum delivery is obtained from the pump. When the arms are to be retracted, the lever 36 is rocked rearwardly to move the valve 136 to its appropriate position and only the micro-switch 46 is actuated so that the motor runs at its slower speed which is necessary because of the smaller effective area of the piston caused by its rod 29. The lever 37 when moved in one direction for raising the arms 33 operates both switches to provide maximum delivery from the pump to the device 34, and when moved in opposite direction operates neither of the switches, the arms being lowered by gravity. Only the micro-switch 46 is actuated when the lever 35 is moved forward or rearward sothat tilting is always at slow speed. The rates of delivery of the pump are arranged to be slightly above that to be utilized, the excess being conducted away by a relief valve. In other embodiments, the pump delivery may be varied by controlling an accelerator on the motor or a control lever on the pump.
Patent GB-1488328-A (GB)
Title: Electrical connector
IPC: H01R12/71
Filed: 1976-05-20
Abstract: 1488328 Electric connectors AMP Inc 20 May 1976 [30 May 1975] 20796/76 Heading H2E An integrated circuit package 1 is connected to a printed circuit board 2 by a body 5 having two rows of terminals 12, each of which comprises two beams 15, 16 joined by a U-shaped bight, the upper beam having a contact 13 to engage a contact 3 on the package and the lower beam having a contact 14 to engage a contact 4 on the printed circuit board. The lower beam has a U-shaped end 18 which fits into a recess 19 in a side wall of the body, being held by a struck-out tang 20. The upper beam has an end 23 which engages a slot 25 when the package is absent. The terminal may be engaged by a test probe via a hole 22. The terminals may be beryllium copper, and the contacts 13, 14 may be simple dimples or deposits of tin. The body, which is of glass filled with phenylene oxide, is connected to the box 2 by a screw 30 engaging a nut 30. Bosses 31 on the body carry split-head posts 32 which locate and releasably retain the package which is secured by a clamp (not shown).
Patent GB-499764-A (GB)
Title: Improvements in or relating to processes and means for the production of a uniform distribution of moisture in tobacco or the like
IPC: A24B3/18
Filed: 1937-07-27
Abstract: An alternating electric field of high frequency, corresponding to a wavelength of 5 to 50 metres, is applied to tobacco or woollen goods to distribute the moisture contained therein uniformly.  Additional moisture may be added during, before or after the high-frequency treatment.  A bale of leaves, with the leaves arranged vertically, may be supported on a perforated plate through which moist air is drawn, and the high-frequency field may be applied between this plate and a perforated plate above the bale.  Alternatively, the leaves may be spread out on a perforated conveyer band and moistened by fine sprays disposed above and below the band.  The high-frequency field may be applied while the band passes through ring-shaped electrodes or through condenser plates, one of which may be formed by the band. The leaves may be stacked before being subjected to the high-frequency treatment or the treatment may be carried out while the leaves pass in a dense stream through a glass tube surrounded by semi-cylindrical coatings or ring-shaped electrodes.ALSO:An alternating electric field of high frequency, corresponding to a wavelength of 5 to 50 metres, is applied to tobacco leaves, cut tobacco, cigars, cigarettes or woollen goods to distribute the moisture contained therein uniformly.  Additional moisture may be added during, before or after the high frequency treatment.  A bale of leaves, with the leaves arranged vertically, may be supported on a perforated plate through which moist air is drawn, and the high frequency electric field may be applied between this plate and a perforated plate above the bale.  Alternatively the leaves may be spread out on a perforated conveyer band and moistened by fine sprays disposed above and below the band.  The high frequency field may be applied while the band passes through ring-shaped electrodes or through condenser plates, one of which may be formed by the band. The leaves may be stacked before being subjected to the high frequency treatment or the treatment may be carried out while the leaves pass in a dense stream through a glass tube surrounded by semicylindrical coatings or ring shaped electrodes.
Patent GB-914350-A (GB)
Title: Wire shaping and drawing apparatus and method
IPC: B21C1/16
Filed: 1961-06-09
Abstract: 914,350. Wire drawing; making wire. AJAX MANUFACTURING CO. June 9, 1961 [Sept. 6, 1960], No. 20896/61. Classes 83 (2) and 83 (4). A wire-shaping and drawing apparatus comprises a frame having a guideway, a slide movable in said guideway, a grip device on said frame for gripping a wire being drawn, a drawing die on said slide for movement therewith through a drawing stroke in a direction away from said grip device, means acting on the slide to produce said drawing stroke and wireshaping means comprising pressure rolls on said slide defining a bight passage of non- circular cross-section, said rolls acting on the wire during said drawing stroke. The apparatus 10 is shown in Fig. 1, being used in conjunction with a machine 14, such as a cold header, to which the drawn wire 11a is supplied directly and at substantially the rate of production. Drawing section.-A draw die 13 is mounted on a slide 22 which moves in a guideway 21 formed at the top of a frame 20 and is moved through the drawing stroke by a rocking lever 23. A wedge-type grip 24 comprising blocks 25 and 26 is mounted on the frame. A supply of lubricant for the wire is contained in a chamber 36 formed in the slide 22. Shaping section.-Before entering the drawing die the wire is shaped to the required crosssection by a pair of rolls 72 and 73. The roll 72 has a plain cylindrical working surface and is mounted in bearings 74 carried by a bracket 80 which is attached to a slide 70. The lower roll 73 which supports the wire during the flattening thereof by the upper roll 72 is mounted on an eccentric portion 78 of a shaft 79 which is carried by the bracket 80. The roll pass is adjusted by rotating the shaft 79 and this is achieved by a lever 86 and a rod 87 which is threaded at its upper end and adjusted in a fixed bracket 91 by nuts 92 and 93. Wire-feeding means.-The wire is drawn through the apparatus after each drawing stroke by a pair of feed rolls 15 and 16, the upper roll 15 has a flat peripheral surface and the lower roll 16 has a groove therein corresponding to the shape of the wire. The rolls are driven through a one-way clutch 65, a lever arm 66 and a link 67 which is attached to an adjusting means 68 mounted on a lever 64 which is secured to the shaft 38. Slide-actuating means.-The rooking lever 23 is fixedly mounted on a shaft 38 journalled in bearings in the frame and the upper end of the lever is forked and engages thrust surfaces 42 on the slide 22, which may be rigidly connected to the slide 70 or may push it along during the drawing stroke. The return movement of the slides is effected by the wire as it is drawn through the apparatus and by a pair of springs 59. The lower end of the lever 23 is coupled by a connecting rod 44 with an eccentric portion 45 of a drive shaft 46 which is chain-driven from a source such as the driving means of the machine 14. It is stated that the close positioning of the various elements of the apparatus reduces the amount of twist which occurs when drawing wire of non-circular cross-section.
Patent GB-839858-A (GB)
Title: Polycarbonate resins and their preparation
IPC: C08G64/06
Filed: 1956-07-05
Abstract: A thermoplastic polycarbonate having good physical, chemical and electrical properties is made by reacting (1) bis-(4-hydroxyphenyl)-dimethyl methane or a nuclear-substituted alkyl or alkoxy derivative thereof with (2) diphenyl carbonate or a nuclear-substituted alkyl or halogen derivative thereof; the reaction being conducted at 150-300 DEG  C. at a pressure not exceeding 20 mm. of Hg.  Preferably the first stage of the reaction, during which most of the liberated phenol is evolved, is effected at 175-200 DEG  C. and 10-20 mm. of Hg and in an inert atmosphere and then the temperature is gradually raised to 250-300 DEG  C. and the pressure further reduced, e.g. to about 0.6 mm. of Hg.  Catalysts for the reaction are metallic Li, K, Ca, Be, Mg, Zn, Cd, Al, Cr, Mo, Fe, Co, Ni, Cr, Ag, Au, Sn, Sb, Pb, Ba, Sr, Pt, Pd or alcoholates, oxides, carbonates, acetates or hydrides thereof.  The polycarbonates are soluble in dioxane and either alone or admixed with fillers (e.g. wood flour, diatomaceous earth, carbon black or silica) may be used in moulding powders for the manufacture of gears, ratchets, bearings, cams, impact parts, gaskets or valve seats.  They may also be made into fibres, films, tubes, paints and varnishes for which various uses are specified.  Examples describe the making of polycarbonates from diphenyl carbonate and bis-(4-hydroxyphenyl)-dimethyl methane and the 3:31-dimethyl and 3:31-dimethoxy substituted derivatives thereof.  Reference has been directed by the Comptroller to Specification 772,627.
Patent GB-940789-A (GB)
Title: Improvements in or relating to expansion and contraction joints in conerete structures
IPC: E01C11/14
Filed: 1961-06-09
Abstract: 940,789. Expansion and contraction joints. SERVICISED PRODUCTS CORPORATION. June 9, 1961 [July 8, 1960], No. 20902/61. Heading E1V. Sealing means for a joint between adjacent concrete sections 5a, 5b, Fig. 3, comprise plates 18 spaced apart by a resilient member 19 and having upper edge portions outwardly offset to receive a sealing strip 20. Before the concrete 5 is laid the joint members are supported by two rods 15 passing through holes in the plates 18 and themselves supported by wires 16 anchored in the foundation of the road. Prongs 11 and curved members 12 secure the plates to the concrete 5 the latter also forming watertroughs. In an alternative embodiment (not shown) the member 19 is omitted, the plates 18 abutting each other and having a smaller sealing strip located between their upper edges. In a further embodiment, Fig. 4, particularly for repairing concrete, plates 28 with a sealing member 29, 30 between their upper portions are vibrated into position while the concrete is still soft.
Patent GB-1071521-A (GB)
Title: Apparatus for separating and feeding sheet-like articles or documents from a stack
Inventor: LEERSNIJDER CAROLUS PIETER
IPC: B65H29/68
Filed: 1964-05-21
Abstract: 1,071,521. Feeding sheets. DE STAAT DER NEDERLANDEN, TEN DEZE VERTEGENWOORDIGD DOOR DE DIRECTEURGENERAAL DER POSTERIJEN, TELEGRAFIE EN TELEFONIE. May 21, 1964 [May 22, 1963], No. 21026/64. Heading B6B. Apparatus for separating and feeding documents or other sheet-like articles from a stack, comprises a first pair of rollers F, G arranged to receive between them documents separated from the stack A, a second pair of rollers T, U, a guide wall N which guides the documents from the first pair of rollers to the second pair, an inclined flap or stop O to stop the feed of a document and which is pivoted at R and engageable with the guide wall N at a distance from the bight of the rollers F, G which is less than the length of a document, and known photo-electric means located downstream of the stop O to detect the passage of a document and to cause the stop to move away from the wall N to permit passage of a single document to the second pair of rollers T, U. The documents A are stacked on edge on a carriage B having rollers C, and the stack is urged by known means against a driven friction roller D which separates the documents. The stack is also agitated by a rotating flyer E provided with blades. The roller F is driven about a fixed axis, and the roller G is an idler roller, braked against rotation by a friction coupling, and mounted in a frame K which is pivoted at L and urged by a spring H towards the roller F. The mating surfaces of the rollers F, G can be concave and convex, respectively, and the roller G prevents more than one document being separated. When a single document passes between the rollers, the roller G will be forced to rotate until the document strikes the stop O, then the roller will stop and the drive roller F will slip over the document. The mating faces of the stop O and the guide wall N have friction linings P, Q, respectively. Sheet guides.-The documents are guided between the two sets of rollers F, G and T, U by the longitudinally-extending wall N, assisted by a plate M arranged between the rollers F, G and the stop O. Adjacent the rollers F, G the wall N is bent so that the documents hit the stop O, and will promote separation in the event of double-feed.
Patent GB-210977-A (GB)
Abstract: 210,977. Berry, J. Jan. 31, 1923. Gas meters.-Means for giving warning of leakage or wasteful use of gas are operated from the units indicator of a gas meter and comprise a make-and-break continuously rotated and a bell alarm circuit. The make-and-break consists of a box 1 made of non-conducting material with metal inserts 4 which are bridged at one stage of rotation of the box by a metal ball 6 rolling in a groove in the box. These inserts contact with metal rings 11, 12 which are supported by supports insulated from the casing and which form terminals for a bell circuit 24. The box is attached to the units indicator 7 and rotates with it, and as sparking can only occur at the contacts within the box, there is no danger of explosion, the box being external to the meter. In a modification, the units dial may be made a conductor and insulated from the meter and have insulated strips at intervals, and the pointer, also insulated, may form a rotary contact to close the bell circuit; or, alternatively, the dial may have a series of insulated contact points with which the pointer successively makes contact.
Patent GB-1503888-A (GB)
Title: Throat gas cleaning plant for pressurized blast furnaces
IPC: C21B/
Filed: 1976-05-21
Abstract: 1503888 Throat gas cleaning plant GOTTFRIED BISCHOFF BAU KOMPL GASREINIGUNGS-UND WASSERRUCKKUHLANLAGEN KG 21 May 1976 [24 May 1975 (2)] 21239/76 Heading B1R A gas cleaning plant similar to that described in Specification 1446524 has a control arrangement wherein the crude gas pipe 3 is divided into (a) a main channel 12 containing a differential pressure annular gap washer 6 and expansion turbine assembly 7 with a quick-acting stop valve 9, and (b) a by-pass channel 13 containing an annular gap washer 14 as a pressure control valve and quickacting stop valve 15, wherein washer 14 and turbine assembly 7 are included as adjustment units in the control circuits for regulating gas pressure at furnace throat 2 and wherein valve 9 is arranged to close when the valve 15 opens and vice versa. The turbine assembly 7 comprises a control valve 18 which is controlled via 25 and 26 in response to alterations in throat gas pressure detected in adjustment unit 11. In a second embodiment (Fig. 2. not shown), the vanes 19 of the turbine itself are adjusted and the pressure control valve in the bypass channel 13 comprises split-path flap valves 14. In a third embodiment (Fig. 3, not shown), the pressure in 12 is controlled by adjustable vanes 32 in a distributor 31.
Patent GB-1370184-A (GB)
Title: Drill chucks
IPC: B23B31/12
Filed: 1973-05-04
Abstract: 1370184 Drill chucks G H ROHM 4 May 1973 [26 July 1972] 21249/73 Heading B3B In a drill chuck the jaws 3 are movable in the body 4 towards a workpiece by rotating a toothed ring 8, for example by means of key 11, the ring may be in threaded engagement with the jaws 3 which slide by means of pin portions 6 in bores in the body. Each jaw has a pair of longitudinal workpiece-engaging knife edges 12 radially displaced substantially the same distance from and substantially parallel to the chuck axis and separated by a set-back portion which includes another knife-edge 13 such that the knife edges 12, 13 lie on the surface of a notional cylinder.
Patent GB-1021722-A (GB)
Title: Stabilised foaming compositions
IPC: C09K23/18
Filed: 1963-05-28
Abstract: Compositions, used as foaming agents, comprise (a) at least one quaternary ammonium compound of formula R1R2R3R4NX, where R1 is CnH2n+1; n is 12 to 18 inclusive and X is Cl, Br or I; R2 and R3, which may be the same or different, are C1-C3 alkyl groups and R4 is C1-C3 alkyl, benzyl or b -phenoxyethyl radical, (b) as a stabilizer, at least one substituted alkane of formula CmH2m+1 Y, where m is 10 to 20 inclusive, Y is -OH or -NR5R6, where R5 and R6, which may be the same or different, are hydrogen or C1-C3 alkyl groups, and (c) at least one solvent for (b) in an amount between 1 and 50 times the weight of the stabilizer.  Specified solvents are carbon tetrachloride, perchlorethylene, chloroform, acetone, trichlorethylene, benzene, toluene, isopropanol, n-butanol, ethyl acetate, cyclohexane and petroleum ether. Preferred stabilizers are tetradecyl and cetyl alcohols and n-tetradecylamine.  Aqueous concentrates containing 50 to 95% by weight of water are prepared and further dilution up to 99.7% of water produces solutions, dispersions and emulsions.  Foams produced from such compositions may be used for cleaning surfaces, and for such purposes the composition may contain other additives, e.g. hydrochloric acid to produce compositions useful for descaling boilers, or phosphoric acid to produce compositions useful for metal cleaning.  Sodium nitrite may also be present as an anticorrosion agent for metals.ALSO:A foam composition for combating fires comprises a quaternary ammonium compound R1R2R3R4NX, a stabiliser CmH2m+1Y and a solvent for the stabiliser used in the form of an aqueous solution, emulsion or dispersion into which an inert gas such as air, carbon dioxide or nitrogen is introduced. In the compound R1R2R3R4NX, R1 is CnM2n+1, n is 12-18, X is Cl, Br, or I, R2 and R3 which may be the same or different are C1-3 alkyl, R4 is C1-3 alkyl, benzyl or b -phenoxyethyl; in the compound CmH2m+1Y m is 10-20, Y is OH or NR5R6 where R5, R6 which may be the same or different are H or C1-3 alkyl.  The solvent may be carbon tetrachloride, perchloroethylene, chloroform, acetone, trichloroethylene, benzene, toluene, isopropanol, n-butanol, ethyl acetate, cyclohexane or petroleum ether, the incombustible halogenated solvents being preferred.
Patent GB-515505-A (GB)
Title: Improvements in or relating to heated towel rails
IPC: A47K10/06
Filed: 1938-07-18
Abstract: 515,505. Heated towel rails etc.; gas supply to burners. HURLEY, M., and BRIGGS MOTOR BODIES, Ltd. July 18, 1938, No. 21303. [Classes 75 (i) and 126] In a towel rail or like heating apparatus, e.g., for drying and airing garments &c., the liquid circulating in a sealed system heated by a heat source, e.g., a gas or oil burner, has a viscosity between 120 and 178 secs. (Redwood) at 70 ‹F. The liquid, which entirely fills the circulating system, may be a paraffin oil having a viscosity of 175 secs. (Redwood) at 70‹F., a specific gravity of 0.8602 at 60‹F., and a flashpoint of 347‹F (Pensley Martens closed cup). The towel rail may comprise two vertical and two or more horizontal tubular members, in which the liquid circulates, and a flue 7 passing up through one vertical tubular member. The gas burner 13 has a filter 16 of wadding to prevent blow-back, and is separated from the flue 7 by an asbestos tube 17. The cap 10 above the flue 7 is lined with asbestos 11, and has outlets 12.
Patent GB-1213097-A (GB)
Title: Improvements in or relating to copper plating
IPC: C25D3/38
Filed: 1969-04-25
Abstract: 1,213,097. Polysulphide sulphonates. M. & T. CHEMICALS Inc. 25 April, 1969 [29 April, 1968], No. 21349/69. Heading C2C. [Also in Division C7] Numerous polysulphide sulphonates of the formula R<SP>1</SP>-(S) n -R-SO 3 M where R is a divalent aliphatic or aromatic radical, R<SP>1</SP> is H, a metal cation, a monovalent aliphatic or aromatic group, -R-SO 3 M or -R-(S) q - RSO 3 M; M is a cation and n and q are 2, 3, 4 or 5 are specified for use as brighteners in copper plating baths. They may be prepared by direct sulphonation of organo polysulphides, or by reaction of alkali metal salts of hydropolysulphides and sultones. Instead of sultones, haloalkane sulphonates, prepared by reacting epichlorohydrin with alkali metal bisulphites, may be used. Examples of polysulphides include Na 2 S 2 , Na 2 S 4 , R<SP>1</SP>S 2 H and R<SP>1</SP>S 2 Na, where R<SP>1</SP> is an aliphatic or aromatic C 1-20  group. Other reactions include SCl 2  or S 2 Cl 2  with NaS(CH 2 ) 3 - SO 3 Na, or ClCH 2 CH 2 Cl with NaSS(CH 2 ) 2 SO 3 - Na, or R<SP>1</SP>SNa with S and a (e.g. propane) sultone in a methanol solution containing sodium methoxide, acetone being added to give additional solid which is filtered.
Patent GB-239229-A (GB)
Title: Improvements in feed pumps for hydrocarbon engines and for other purposes
IPC: F02M37/02
Filed: 1925-08-28
Abstract: 239,229. Zorzi, C. Aug. 30, 1924, [Convention date]. Void [Published under Sect. 91 of the Act]. Vacuum apparatus. -Fuel-feed apparatus for internal-combustion engines &c. comprises a chamber 1 connected to a fuel tank by a pipe 4 and by a pipe 5 to a source of vacuum. When the liquid lifts the float 17 and closes the suction valve 8, the automatic valve 15 opens and allows the liquid to flow into a chamber 2 and air to pass up the pipe 6 to equalize the pressures in the two chambers. The chamber 2 is connected to the carburettor by a pipe 3 and to atmosphere by a pipe 16.
Patent GB-261851-A (GB)
Title: Improvements in apparatus for separating solids from liquids
IPC: B04B7/00
Filed: 1925-08-28
Abstract: 261,851. Woodall-Duckham (1920), Ltd., and Krall, R. Aug. 28, 1925. Strainer separators.-In separators of the type described in Specification 219,651, sealing rings are arranged between the conical rotary screen b and the stationary hopper e. The necessary clearance, occurs between the ring c carried by the bottom ring a of the screen and a ring f on the stationary ring d a supporting the hopper. The rings are set so far from the periphery of the ring a that the clearance is protected by the rim from splashes.