baber/WOPTO huggingface dataset:
Patent GB-987783-A (GB)
Title: Increasing permeability of subsurface formations
Inventor: MCGUIRE WILLIAM JAMES
IPC: C09K8/62
Filed: 1961-08-17
Abstract: 987,783. Wells &c. ATLANTIC REFINING CO. Aug. 17, 1961, No. 29712/61. Heading E1F. The permeability to fluids of a formation having a fracture extending from a well is increased by injecting into the well and thence into the fracture a carrier liquid containing solids having maximum dimension between 0À03 and 0À25 inch and in sufficient concentration to form in the fracture a single layer of sparsely distributed solids. The solids which may be spheres or discs may be of metal, ceramic or plastics, or of organic material such as walnut shells or peach seeds. The solids have a falling rate in the carrier liquid of less than 0À1 ft/min, are capable of withstanding a load of 40 lbs/ solid without fracturing into solids having a maximum dimension less than 0À03 inch, and have a max. dimension equal to half the width of the fracture which is preferably 0À06 inch. In one method of forming the layer a penetrating liquid is first injected into the well to establish the rate of pumping and the pressure limitations of the equipment. A large volume of non-penetrating low viscosity liquid is then injected to lengthen the fracture and seal its walls, and this liquid is followed by a high viscosity liquid which widens the fracture. The solids in the carrier liquid which is immiscible with the other liquids is finally injected some of the mixture remaining in the well. Sand smaller than the solids may be mixed with the fracture widening liquid to be deposited in the extremities of the fracture. When the fracture is vertical the sand may be added to the fracture lengthening liquid to be deposited in the bottom parts of the fracture. In a second method of depositing the layer a penetrating liquid is injected to create or extend a fracture and to seal the walls of the fracture, the penetrating liquid being followed by a viscous carrier liquid which is firstly used to carry small grained sand to the extremities of the fracture, and is secondly used to deposit the solids in the parts of fracture adjacent the well. When treating vertical fractures the production of water is reduced by depositing insoluble plugging materials smaller than the solids at the bottom of the fracture before depositing the solids. Formulae are given for estimating the width of the fractures and the concentration of the solids in the carrier liquid, and tests for the determination of the concentration experimentally are described.
Patent GB-1193018-A (GB)
Title: Timepiece
IPC: G04B19/24
Filed: 1968-06-21
Abstract: 1,193,018. Clocks and watches. SUWA SEIKOSHA K.K. June, 21, 1968 [July, 1, 1967], No. 29780/68. Heading G3T. In a timepiece including and hour wheel 1 mounted for rotation about the axis of a shaft 4, a member 3 is removably mounted on the shaft 4 for returning in position a member 2 rotatable relative to the hour wheel 1, a clearance being provided between the members 2, 3. The member 2 may be a day disc in a calender watch, or an alarm releasing wheel in an alarm timepiece. The retaining member 3 may be wholly or part annular or of U-shape, and may be received in a groove in or on a frusto-conical surface of the shaft 4.
Patent GB-1361913-A (GB)
Title: Removing nitrogen oxides from gases
IPC: B01J23/04
Filed: 1972-06-26
Abstract: 1361913 Nitrogen oxide removal catalysts TORAY INDUSTRIES Inc 26 June 1972 [24 June 1971] 29812/72 Heading B1E [Also in Division Cl] A catalyst for the removal of nitrogen oxides from a gaseous mixture comprises carbon and sodium or potassium hydroxide. The catalyst may be prepared by a) immersing carbon in a solution of sodium or potassium hydroxide and drying, b) blending carbon with sodium or potassium hydroxide, or c) impregnating carbon with sodium or potassium nitrate, calcining to decompose the nitrate and finally passing water vapour over the calcined mass.
Patent GB-251884-A (GB)
Title: A new or improved tobacco ash receptacle and support for cigarettes and cigars
IPC: A24F19/00
Filed: 1925-11-26
Abstract: 251,884. Steventon, W. H. Nov. 26, 1925. Ash-trays. - A hollow receptacle a, preferably of pottery, has an inwardly inclined integral top b provided with an elongated aperture b<2>. The bottom c of the receptacle is inclined as shown and is provided with an opening c<2> through which accumulated refuse e may be discharged. The top b is provided with radial recesses acting as rests for cigars. cigarettes and tobacco pipes. The sides f of the receptacle may carry advertisements.
Patent GB-1461476-A (GB)
Title: Drying of acrylamide  polymers
IPC: C08L33/24
Filed: 1974-07-05
Abstract: 1461476 Drying acrylamide polymers SUMITOMO CHEMICAL CO Ltd 5 July 1974 [10 July 1973] 29869/74 Heading C3P Acrylamide polymers are dried by mixing the wet polymer with a thiourea compound in an amount of at least 0À01 wt. per cent based on the weight of dry polymer, and thereafter drying the polymer in the presence of said compound. Polymers which may be treated are polyacrylamide, acrylamide / acrylonitrile copolymer, acrylamide / methacrylamide copolymer, acrylamide / styrene copolymer, acrylamide/ acrylic acid salt copolymers, acrylamide/ammonium acrylate copolymer, acrylamide/vinyl sulphonate copolymers, acrylamide/itaconate copolymers, cationically modified polyacrylamides, acrylamide/dialkylaminoethyl acrylate copolymers, and acrylamide/vinyl pyridine copolymer. The thiourea compound may be thiourea itself, or a substituted thiourea such as trimethyl-, triethyl-, tetramethyl- or tetraethylthiourea. In the examples, the drying is effected by heating at atmospheric pressure.
Patent GB-1424495-A (GB)
Title: Business machine including a record strip cutting mechanism
IPC: B26D3/12
Filed: 1974-07-05
Abstract: 1424495 Cutting apparatus NCR CORP 5 July 1974 [31 July 1973] 29885/74 Heading B4B A cutting mechanism in a business machine adapated to perform recording operations on a record strip, the cutting mechanism comprising a knife 26 arranged to be moved in a cutting direction so as to cut the record strip across its width, control means 51, movable between first and second control positions so as to limit the cutting stroke and selectively operable means for determining whether the control means is set in the first or second positions, the configuration of the cutting edge of the knife being such that the knife is arranged to make a cut of a first or second predetermined length dependent on whether the control means is set in the first or second control position respectively. The knife 26 is formed with cutting edges 27, 28 for co-operation with a fixed knife 20, the knife 26 being mounted on a holder 24 which is pivotally connected to a frame 21. The knife 26 is normally urged by a spring 31 to the position shown, such that a projection 34 on an extension 33 of the holder abuts against a shoulder 38 on a latch 37. The control means comprises a pivotally-mounted arm 51 normally urged by a spring 60 to the position shown in which an arm portion 53 abuts an adjustable screw 55. In operation, the latch 37 is released by means of a cam-actuated lever 45 engaging a lug 40 on the latch, the knife 26 then moving under the action of the spring 31 to sever the strip, the projection 34 abutting against a cam surface 52 on the arm 51; on the return stroke of the lever 45 the latter engages to the extension 33 of the holder to return it to the latched position. If it is required to only partly sever the strip, Fig. 3 (not shown), a solenoid 62 is energized thereby moving the arm 51 to a position determined by the setting of a screw 56 such that the projection 34 engages a different portion of the cam surface; the knife 26 does not then carry out a complete severing operation.
Patent GB-1503650-A (GB)
Title: Methods of conveying explosive materials
IPC: B65G51/01
Filed: 1975-10-03
Abstract: 1503650 Conveying articles by floating articles in troughs IMPERIAL METAL INDUSTRIES (KYNOCH) Ltd 3 Oct 1975 [5 July 1974] 29897/74 Heading B8A A liquid channel for conveying vessels filled with explosive material comprises main go and return channels 16, 22 partly filled with liquid preferably water along which water flow is maintained by a pump 28 and which lead to branches 18, 20. As described the conveyer acts between a priming ingredients mixer 30 and priming stations 12, 14 all protected by blast walls 40, 44, 46. An operator at 38 places vessels in channel branches 32, 34 and when released by a gate 42 allows their positioning by gates 56-66 to be filled from the mixer 30. When material is required at station 12 or 14 a signal releases a vessel which is guided by diverters 72, 74 to the appropriate station where the arrival is signalled by a sensor 76, 78. After unloading the vessels are returned by channels 24, 26, 22. Control units 80-84 operated by controls 86, 88 and including sensors 76, 78, 94 control the movement of vessels by gates 56-66, 92, 94 and prevent more than one vessel being in the same channel section.
Patent GB-937579-A (GB)
Title: Improvements in or relating to metal pins
IPC: H01R43/16
Filed: 1961-08-18
Abstract: 937,579. Making contact pins. R. F. OXLEY. Aug. 20, 1962 [Aug. 18, 1961], No. 29936/61. Class 83 (2). [Also in Group XXIII] A method of making metal pins suitable for the formation of wrapped joints comprises extruding a metal strip having a pair of longitudinal ribs opposite one another on opposite sides of the strip, each rib having a face which is at an acute angle to and extends from the surface of the strip and a face perpendicular to the face of the strip and cutting the strip into short lengths perpendicular to its length. A pin 10 of a substantially square cross-section is severed by sawing from an extruded strip 30 having two pairs of longitudinal ribs 38, 39; 34, 35 positioned on opposite sides of the strip. A sawing machine 50 comprises a strip feed stop 51, a spring biased pressure pad 52 and a circular saw 53 reciprocated in a vertical direction by a piston assembly 54 via a linkage 55. The saw has axially tapered teeth and is arranged so that its greatest diameter is adjacent to the cut-off pin. The saw passes through the strip during its downward movement to sever a pin, the strip is indexed to the stop and a further pin severed during the upward pass. In a modification the machine comprises two saws arranged vertically one above the other which alternately sever a pin from the strip which is intermittently indexed to the stop. The pin is inserted into a flanged bush 11 of deformable insulating material, e.g. P.T.F.E., which is positioned in a hole formed in a panel, e.g. an electrical chassis. The barb-like side protrusions 16, 17 formed by the ribs of the extruded strip expand the bush which is thus securely fixed in the panel and which in turn also grips the leading protrusion 16 to retain the pin securely within itself. Wrapped conductor wires are subsequently connected to the ends of the pins.
Patent GB-375672-A (GB)
Title: Process for the production of white opaque enamels and glazes
IPC: H02K21/16
Filed: 1931-10-29
Abstract: 375,672. Enamels and glazes. KREIDL, 1., 5, Sebastian Kohlgasse, Vienna. Oct. 29, 1931, No. 29981. Convention date, March 12. Addition to 375,670. [Class 56]. Relates to the process for producing opaque white enamels and glazes, described in the parent Specification, in which the chemical composition of the frit is such that it is colloidal, or in a finely-divided condition approximating thereto, in the slip. According to the present invention, the colloidal condition is obtained by increasing the ratio of alkali to boric oxide until it is considerably higher than usual. A minimum of two parts of alkali to one part of boric oxide is suitable, but the preferred ratio is between 3 : 1 and 5:1. The aluminium content is preferably increased, also, by the addition of clay, felspar, or the like to the batch. An example of a suitable mixture is given in the Specification.
Patent GB-658237-A (GB)
Title: Improvements in or relating to metal can bodies
IPC: B23K31/00
Filed: 1949-11-23
Abstract: 658,237. Soldered seamed joints. CONTINENTAL CAN CO., Inc. Nov. 23, 1949, No. 30089. Convention date, Feb. 2. [Class 83 (iv)] A joint for a metal can body comprises a number of inner and outer hooks 8, 6 equally spaced throughout the central portion of the joint 2 and inner and outer laps 9, 10 between the hooks, the outer laps 10 terminating at the bend of the outer hooks 6 and the inner laps 9 being twice the width of the hook portion of the joint. The joint is bumped after assembly so that the laps 9 and 10 are set in to the body wall and the recesses so formed around each lap are filled with solder. The outer hooks 6 are longer lengthwise of the joint than the inner hooks 8 so that the joint has three thicknesses of metal between the four thicknesses at the hooks and two at the lap portions, any space between the three thicknesses being filled with solder which strengthens the joint. Alternatively, the inner hooks may be the longer. The ends of the joint are reduced to two laps to facilitate flanging of the can body.
Patent GB-441033-A (GB)
Title: Improvements in or relating to powders for use with molten metals
IPC: B41C3/02
Filed: 1934-10-20
Abstract: A powder for treating molten metals, particularly lead or tin, or lead-tin and lead-tin-antimony alloys such as are used in type and stereotype founding, comprises by volume 20-30 per cent of sodium chloride, 20-25 per cent of ammonium chloride, and carbon, preferably wood charcoal, with or without starch, nitre, sulphur, and rosin. Preferably the proportion of carbon is 25-40 per cent and the proportions of sodium chloride and ammonium chloride are about equal. Specification 400,258 is referred to.
Patent GB-983406-A (GB)
Title: A series arrangement of controlled rectifiers
IPC: H02M7/19
Filed: 1961-08-21
Abstract: 983,406. Converting. SIEMENS-SCHUCKERTWERKE A.G. Aug. 21, 1961 [Aug. 19, 1960], No. 30154/61. Heading H2F. [Also in Division H3] In a current converter using series connected semi-conductor controlled rectifiers control pulses are applied to only one of the rectifiers, the control electrodes of the others being connected (directly or through a transformer) so that firing of said one rectifier affects the voltage across the elements in parallel with it of a resistive capacitative voltage divider, causing the second rectifier to fire and so on. In Fig. 3, four controlled rectifiers 11, 12, 13, 14 are connected in series, and the voltage divider has capacitors 15, 16, 17, 18 and resistors 19, 20, 21 and 22. With the main supply polarity as shown, a pulse from the control unit 25 fires rectifier 11, connecting the then charged capacitor 15 between the control electrode and cathode of rectifier 12, causing it to fire. Rectifier 13 is similarly fired by capacitor 16, and so on. Resistors and diodes may be used in the control electrode circuits as shown. The second embodiment (Fig. 4) uses toroidal transformers 31, 32, 33, 34 whose primaries are in the main circuit 10, and whose secondaries 31a &c. are connected through diodes to the control electrodes and cathodes. The windings 31b demagnetize the transformer during the reverse half cycles. The Specification describes briefly the working of the semi-conductor controlled rectifier.
Patent GB-695645-A (GB)
Title: Improvements in and relating to gates
IPC: E06B11/02
Filed: 1950-12-09
Abstract: 695,645. Gates. SLADE, R. E. Nov. 20, 1951 [Dec. 9, 1950], No. 30179/50. Class 45 [Also in Group XXV] A gate comprises four uprights 15-18, four cross-members 13, 14, 19, 20 and a capped tube 1-0 adapted to be seated over an upstanding post 23, the inner face of the tube cap 11 forming with the top of the post a bearing surface for supporting the weight of the gate, the inner surface of the tube wall forming with the outer surface of the post a bearing surface to resist sagging, and the cross-members being arranged in pairs on each side of the capped tube to which they are permanently secured to form a beam free to rotate about the post 23 with one arm of the beam shorter than the other and loaded as a counter-weight for the other arm. The short arm is loaded by a weight 21 which can be positioned in one of a number of holes 22 in the member 20. A loose plate smeared with lubricant is positioned between the top of the post 23 and the inside of the cap 11. Chestnut palings or wire netting may be secured to the uprights.
Patent GB-164048-A (GB)
Title: Method of making milling cutters
IPC: B23B5/42
Filed: 1919-12-03
Abstract: 164,048. Marks, E. C. R., (Pratt & Whitney Co.). Dec. 3, 1919. Milling-cutters.-In making a backed-off milling- cutter of the kind having axially-inclined non- rectilinear teeth, the blank A is milled by a forming cutter S which is fed downwards to produce the backing off whilst the blank is slowly rotated. The forming cutter S, Fig. 14, may have teeth parallel to the axis but bevelled or otherwise ground on their front faces to helicoids or, as shown in Fig. 16, may be made with generally helical teeth. The direction of inclination of the teeth must be the same on both cutters, whilst the degree of inclination is preferably the same, though the forming cutter is generally of much smaller diameter. The degree of relief of the forming cutter must bear to that of the final cutter a ratio which is the inverse of the ratio of the respective degrees of inclination of their teeth. and is preferably therefore 1 : 1; it is also preferred to make both cutters with the same number of teeth, as the same backing-off cam can then be used for both. To allow for the slight error which arises from the fact that the forming cutter cuts its maximum depth in a plane perpendicular to the outer face of a tooth of the finished cutter and not in a plane containing the axis of that cutter, the forming cutter is backed-off by means of a lathe tool V, Fig. 28, slightly tilted as shown; the profile of the tool V is that of the contour to be cut. In the case of a finished cutter with undercut teeth, the necessary correction of forming cutter is similarly obtained, the angle of tilt required being greater. The finished cutter may alternatively be cut by a lathe tool X, Fig. 35, with an inclined front face 36. This tool X is obtained by the use of a tool W (as shown in Fig. 33) set with a cutting face 34 parallel to the cuting face 35 of the tool X and reciprocated parallel to the face 36. The tool W is itself produced by milling with the forming cutter S in the ordinary way; or it may be made by a reciprocating cutter Y, Fig. 36, with an inclined upper face as shown in Fig. 37 but formed with the correct contour at a transverse sectional plane perpendicular to its direction of reciprocation.
Patent GB-1273442-A (GB)
Title: Improvements in or relating to collapsible stands for musical instruments
Inventor: MUELLER JOHANNES
IPC: G10G5/00
Filed: 1969-06-16
Abstract: 1,273,442. Stands. J. MULLER. June 16, 1969 [June 15, 1968], No.30327/69. Heading A4H. A collapsible stand, Fig.4, e.g. for clarinets, trumpets, comprises three to six legs 6 pivotally mounted in slots 5 in a journal member 1, and a central support 7 slideable in a bore (2) in member 1, the legs 6 being pivotable from the erected position shown in which they rest on the ground to a collapsed position parallel to support 7, Figs.1, 3 (not shown), support 7 in the collapsed position being slid in bore (2) so as to project from the end thereof adjacent legs 6, Figs. 1, 3 (not shown). In a stand for e.g. guitars, Banjos, Mandolins, Saxophones, Fig.7, two legs 6 and support 7 rest on the ground in the erected position, and one or two legs 6 project upwardly. The legs 6 and support 7 are locked in the erected and collapsed positions by an aresting member 9, e.g., threaded into member 1 and stop surfaces (12, 13) on legs 6 (see Figs.2, 3) and a recess on rod 7. Holding arms 8, Fig.7, are pivotally mounted at a selected position on legs 6, stops 22 limiting their pivoting, or attached to elements slideable on legs 6. The legs 6, support 7 and arms 8 may include shock-absorbing caps 20 and coverings 19, Fig. 7.
Patent GB-1020521-A (GB)
Title: Vehicle door construction
IPC: B60J5/04
Filed: 1963-07-31
Abstract: 1,020,521. Vehicle doors. R. H. DENNIS. July 17, 1964 [July 31, 1963; March 13, 1964], Nos. 30359/63 and 10831/64. Heading B7J. A vehicle door has one part 3 pivoted to the body 1 at 3a and a slidable part 4. The part 3 may be in two portions which are hinged together, Fig. 2 (not shown), and the lower edge of the lower portion rests on a gutter at either side of the door opening when the door is open. The upper part 3 may pivot and slide into the interior of the vehicle; alternatively it may be flexible and tends to fold when the part 3 is opened. Mechanical, hydraulic or electrical mechanism may be used to open both doors simultaneously.
Patent GB-305721-A (GB)
Title: Improvements in or relating to the prevention of caking of crystals, powders and thelike
IPC: B01J2/30
Filed: 1927-11-11
Abstract: 305,721. Scott, A. C. Nov. 11, 1927. Manures.-Hygroscopic crystalline substances, for instance sodium nitrate for use as a fertilizer, are prevented from caking by adding, by trituration or otherwise, a finely divided inert insoluble silicate having a readily sub-divisible, laminated or fibrous texture, such as asbestos. Talc or mica may also be employed.
Patent GB-840562-A (GB)
Title: Improvements in method of and means for the control of an air inlet opening of a jet propulsion unit or a gas turbine engine
Inventor: LAUZELY JEAN-RENE
IPC: F02C7/042
Filed: 1957-09-27
Abstract: 840,562. Jet propulsion plant. SOC. NATIONALE D'ETUDE ET DE CONSTRUCTION DE MOTEURS D'AVIATION. Sept. 27, 1957 [Oct. 1, 1956], No. 30405/57. Addition to 749,767. Class 110 (3). An air intake, as described in the parent Specification, in which the flow of air through it is controlled by one or more orifices which are able to discharge, when desired, from the physical leading edge zone of the casing close to the stagnation line so as to form a generally continuous fluid wall about and forwardly of the physical leading edge zone, has an orientable auxiliary jet formed by a socket having two opposite concave walls centred on an axis, two leading edge parts housed in the socket and mounted for rotation about the said axis and having- either surfaces opposite to each other to form a slot-shaped orifice and means for varying the angular position of the parts about the said axis. A jet-propulsion engine air-inlet C has a compartment 8 formed in its leading edge by an annular partition 2. The partition carries a number of forked supports 1, each of which carries a shaft 3. An upper section 11 and a lower section 11a are pivoted on the shaft 3 by flanges 12. The space between the sections 11, 11a forms a slot 6 through which an annular jet of air or other fluid supplied by the pipe 7 may be passed to increase or reduce the area of the intake. The space between the section 11, 11a and the casings 9, 10 is sealed by rolls 4, 5 of elastic material. Metal sleeves 22 may be provided to couple adjacent segments of the rolls 4, 5. The outlet area of the slot 6 may be varied by rotating one of the sections 11, 11a relative to the other about the axis 3. The section 11 may be rotated by a rod 16 arranged to slide in a socket 17 fixed. to a threaded sleeve 18 mounted on a threaded rod 19. The rod 19 may be rotated by a rack engaging the pinion 19a or by a worm gear engaging the pinion. The section 11a is rotated by a similar mechanism. The direction of the slot 6 may be altered by moving both of the sections 11, 11a together. Means may be provided to control the rate of flow of auxiliary fluid. The fluid may be water or another liquid.