baber/WOPTO huggingface dataset:
Patent GB-1267969-A (GB)
Title: Quick freezing of liquids for dehydration
Inventor: GELDER ARTHUR VAN
IPC: F25D31/00
Filed: 1969-06-13
Abstract: 1,267,969. Freezing liquids; freeze drying. I.F.C. CORP. 13 June, 1969, No. 30236/69. Headings F4G and F4H.  Liquids are frozen by passage through a slot into a vacuum chamber, the resultant porousice being broken up before passage to a dehydration process. As illustrated, liquid from tank 10 is passed to a feed Chamber 43 and thence, through a longitudinal slot, into a cylindrical chamber 12, 22. The latter is evacuated through a manifold 35 to a pressure of between 100 and 2000 microns of mercury, so that the liquid freezes rapidly, with ebullition, to form an expanded ice which is initially accommodated in an enlarged part 14 of the cylindrical chamber. Rotating and fixed spikes 18 and 21 break-up the ice into smaller particles which are moved by a screw conveyer 24 to a tank 25 for delivery through -an air lock 26, 27, 28. A vibrator 40 prevents blockage. The tank 25 is subject to the pressure in the manifold 35 and operation is such that not more than 80% of the original liquid content is evaporated. The process may be used on foods, e.g. milk, biological and pharmaceutical products, and blood.
Patent GB-787956-A (GB)
Title: Improvements in or relating to pulse signal delay circuits
Inventor: URRY DENIS EDWARD
IPC: H03K5/13
Filed: 1954-10-21
Abstract: 787,956. Pulse delaying circuits. CINEMA-TELEVISION, Ltd. Nov. 18, 1955 [Oct. 21, 1954], No. 30335/54. Class 40 (6). Apparatus for delaying each of a succession of pulses in a train by a predetermined delay comprises deriving control signals from the commencement and termination of each applied pulse, generating a delay pulse of duration equal to the required delay in response to each of said control signals and deriving a further control signal from the termination of each of the delay pulses in response to which the required delayed pulse train is generated. Fig. 1 shows a block schematic of an apparatus in which the input pulse train at 1 is applied to a device 2 from which control signals are generated at the commencement and termination of each applied pulse, this may for example comprise a differentiating circuit followed by diodes connected in opposed plurality. The control signals are applied to circuits 3, 4 which are triggered to generate pulses of duration equal to the required delay. These pulses are applied to circuits 5, 6 from which further control signals are produced coincident in time with the termination of the applied pulses and these control signals are applied to bistable trigger circuits 7 to generate an output pulse which is initiated by a signal from 5 and terminated by a signal from 6, thus a pulse train is produced at output 8 which is identical with that at input 1 but delayed by a predetermined period. Fig. 2 shows a modification in which an input pulse train, Fig. 3, A, is applied at terminal 10 to a cathode coupled pair of discharge tubes 11, 12. The output from the anodes of which are applied to the control grid of respective flip-flop circuits comprising cathode coupled tubes 21, 22 and 21A, 22A, respectively. The couplings from the anodes of tubes 11, 12 comprise differentiating circuits so that signals, Figs. 3, B, C, are produced at the control grids of tubes 21, 21A respectively. The flip-flop circuits generate output pulses, Figs. 3, D, E, of the required delay time, these are further differentiated and applied to cathode coupled amplifiers 31, 32, 31A, 32A respectively which are arranged to amplify only the negative going spikes, Figs. 3, F, G, which are coincident with the trailing edge of the pulses, Figs. 3, D, E. The output from tubes 32, 32A are combined in a further cathode coupled tube pair 39, 40 to generate the waveform, Fig. 3, H, at the anode of tube 40. This is applied to the bistable trigger circuit comprising cathode coupled tubes 49, 52, to generate an output pulse train at 61, Fig. 3, J, which is identical with the input pulse train, Fig. 3, A, but delayed by a time period equal to the duration of the pulses generated by the flip-flop circuits 21, 22, 21A, 22A, respectively. The amplitude of the output pulse train may be made identical with that of the input train by the use of a gain control circuit using a control signal derived from the input pulse train and applied for example to the amplifier stages.
Patent GB-982356-A (GB)
Title: Improvements in or relating to knife structures particularly intended for the peeling of veneer
IPC: B27L5/02
Filed: 1963-07-31
Abstract: 982,356. Turning; machine tool details. AKTIEBOLAGET JONKOPING - VULCAN. July 31, 1963 [Aug. 26, 1962], No. 30394/63. Headings B3B and B3T. Apparatus for peeling veneer from a log comprises a knife 3 which is rockable on an axis extending along its edge through a limited angle in both directions from a neutral position corresponding to a predetermined angle of cutting under the influence of the pressure of the log and the veneer against the knife during the peeling operation. The knife is adjustably clamped between a pair of members 4a, 4b of a knife holder having a socket 7 rotatable about a pivot 8 rotatably journalled in a frame member 1a and a socket 9 rigidly connected to a pivot 10 rotatably journalled in a frame member 1b. The knife holder has an arm 15 carrying a member 16 disposed between a pair of bolts 17a, 17b urged against the member 16 by springs in fingers 19a, 19b carried by a plate 20 clamped to the pivot 8. The pivot 10 is connected by a universal joint 25 and a rod 24 to a rotatable eccentric which, during a peeling operation, imparts a reciprocatory movement to the knife. The knife is inclined at an angle α of 2 degrees to a line 14 perpendicular to a line 12 extending through the edge of the knife and the axis of rotation of the log which is disposed to the right of the line 14. A chamfer 11 is provided at an angle of 20 degrees to the front surface of the knife and an angle γ equalling 18 degrees from the line 14, the knife having an included angle # of 16 degrees. In the apparatus, the log is rotated between a pair of pivoted levers and, during peeling, its axis moves along an arc of a circle, the plate 20 carrying the spring-pressed bolts 17a, 17b engaging the member 16 on the knife-holder being rocked by rotation of the pivot 8 in dependence on the pivotal movement of the levers. The action of the log and veneer on opposide sides of the knife automatically rocks the knife against the pressure of the spring-pressed bolts to position the knife at the most suitable angle for the peeling operation.
Patent GB-1014260-A (GB)
Title: Improvements in gas turbine ducted fan powerplant
IPC: B64D27/18
Filed: 1964-08-04
Abstract: 1,014,260. Aircraft power plant. GENERAL ELECTRIC CO. Aug. 4, 1964 [June 5, 1964], No. 30417/64. Heading B7G. [Also in Division F1] A gas turbine ducted fan power plant comprises a pair of tip turbine driven ducted fans and two or more gas generators, the gases from which are directed on to the tip turbines. The plane containing the axes of the gas generators is disposed perpendicular to the plane containing the axes of the ducted fans. Each tip turbine is arranged to receive part of the gases from each gas generator. The power plant shown in Fig. 3 comprises two gas generators 20 and two tip turbine ducted fans 16, 17, the plane containing the axes of the gas generators being disposed horizontally and that containing the axes of the ducted fans being disposed vertically. In the embodiment shown in Fig. 4 three gas generators 20 are provided, the plane containing the axes thereof being disposed vertically while the plane containing the axes of the ducted fans 16, 17 is disposed horizontally. In Fig. 8, gases from the upper gas generator 20 pass into scrolls 31, each of which extends over about half the periphery of the tip turbine associated with the ducted fan 16 or 17; similarly, gases from the lower gas generator 20 pass into scrolls 32 each of which extends over about half the periphery of the tip turbine associated with the ducted fan 16 or 17. In the plant having three gas generators, each gas generator delivers into two scrolls each extending over about a third of the periphery of the associated tip turbine. A tip turbine ducted fan assembly is shown in Fig. 7, the tip turbine comprising blades 27 receiving gases from the scrolls 31, 32 and the fan comprising blades 28 disposed within duct 30. In operation of an aircraft, less thrust is required towards the end of a flight since the load has become reduced as a result of the fuel consumed and with power plant in accordance with the present invention thrust is reduced by shutting down one gas generator (and in the case of a power plant having three gas generators, subsequently by shutting down a second gas generator). This results in improved specific fuel consumption. Specification 935,271 is referred to.
Patent GB-427819-A (GB)
Title: Locking bar for double track sliding doors
IPC: E05B65/08
Filed: 1933-11-02
Abstract: 427,819. Fastenings. BLOOMFIELD, J. H., 11, Mayfield Road, Bickley, Kent. Nov. 2, 1933, No. 30455. [Class 44] A fastening for doubletrack sliding doors or frames comprises a bar constituted by two members B, C hinged together, the member C being pivoted to the edge of one door or frame and being adapted to project into a slot D on the face of the other door or frame, and the member B being capable of being moved on its hinge and secured to the face of the door or frame. The pivot for the member C is mounted on the bent end of a strap H secured to the face of the door and provided with a staple H<1> for engaging a slot B<1> in the member B. The slot D is preferably tapered and formed in a plate secured to the face of the door or frame.
Patent GB-877494-A (GB)
Title: Improvements in or relating to protective arrangements for electric motors
Inventor: IRVING HERBERT DAN
IPC: H02H7/08
Filed: 1958-09-24
Abstract: 877,494. Control of D.C. motors. GENERAL ELECTRIC CO. Ltd. Sept. 22, 1959 [Sept. 24, 1958], No. 30587/58. Class 38 (3). When the voltage across armature 1 tends to become excessive during regeneration, a trigger circuit 12 operates to pulse a flash discharge tube 6, and current then flows through loading resistor 5 to prevent over-voltage on the armature. Contactor 10c having coil 10 then closes to extinguish the tube 6 and, afterwards, contactor 11c having coil 11 closes to relieve the first contactor and to open contacts 11ca in series with shunt field winding 3. The supply for the motor may include mercury arc rectifier equipment incapable of receiving regenerated power.
Patent GB-286760-A (GB)
Title: Improvements in or relating to carburetters
IPC: F02M19/03
Filed: 1926-12-03
Abstract: 286,760. O'Brien, H. S. F. R., and Sinauer, E. M. Dec. 3, 1926. Spray carburettors. -A nozzle 8 fed from a float chamber 2 is mounted on a tubular member 9<b> over which is screwed, at 40, a thimble-shaped member 39 which carries the spraying member 4<a> in the chamfered portion of which outlet orifices 43 are formed. Between the members 9<b> and 39 is an annular passage 38 to which air may be admitted through ports 44 controlled by ports of different sizes in an adjustable ring 45. The upper end of the passage 38 is of inverted W form at the centre of which the fuel issues. A slow-running duct 60 is fed through a pilot nozzle 50. As a modification, the nozzle may be constructed as described in Specification 255,932, [Class 69 (iii), Spray-producers &c.]. As a further modification, the fuel passage may be duplicated in the form of concentric passages, one fed direct from the float chamber and the other from a well or chamber open to the air.
Patent GB-748797-A (GB)
Title: Method of and apparatus for determining and adjusting the aerodynamic pitching moment of a full-sized rotary aerodynamic member
IPC: G01M9/06
Filed: 1953-11-05
Abstract: 748,797. Helicopters. DOMAN HELICOPTERS, Inc. Nov. 5, 1953 [Nov. 25, 1952], No. 30629/53. Class 4. [Also in Group XIX] To enable a trailing edge tab on a helicopter rotor blade to be pre-set along the span of the blade to angles that give each blade, before assembly on a rotor head, standard pitching moment characteristics, apparatus is provided for determining the pitching moment of a blade at intervals along its span. A blade 10, having a pliable trailing edge tab 12, has the root end of the spar 11 secured on its axis to a wire 14 which passes through a bushing 33 in a bracket 32 mounted on an upright support. The upper end of the wire is clamped by a stud 19 in a collar 18 rotatably secured to a further bracket 17, screws 21 being provided to act on a lever 22 secured to the collar 18 in order that the blade may be rotated about its axis. Tracks 26 are positioned forward of the leading edge of the blade to support a movable carriage 25 which carried a jet nozzle 23 connected with a fan 24 driven by a suitable motor. A clamp 15 secured to the end of the spar 11 carries a pointer 30 co-operating with a scale 31 graduated to give readings of pitching moment of the blade. In operation, the carriage 25 is located with the airstream from the jet 23 directed towards the leading edge of the blade at one end thereof and the screws 21 are adjusted until the blade is set in a " no-lift " attitude as determined by a scale 29 provided to give indication of pendular oscillations. The blade will then turn about its axis against the torsional resilience of the wire 14, and if the reading on the scale 31 differs from a desired value the portion of the tab 12 subjected to the airstream is adjusted until the desired reading is obtained. This operation is repeated at intervals along the span of the blade by movement of the carriage 25 and subsequent adjustment of the appropriate portion of tab. By this means each blade has standard characteristics and the necessity of whirling a complete rotor to track the blades is obviated.
Patent GB-1401635-A (GB)
Title: Process for manufacturing leather-like materials
IPC: D06N3/12
Filed: 1972-06-30
Abstract: 1401635 Porous coating AJINOMOTO CO INC 30 June 1972 [2 July 1971] 30757/72 Heading B2E [Also in Divisions C3 and D1] A porous leather-like material is produced by coating or impregnating a base cloth with a heterogeneous mixture of a polyamino acid, an elastomer and an organic dispersing medium and thereafter removing the dispersing medium from the coated or impregnated cloth. The polyamino acid may be a homopolymer of an amino acid or a copolymer of at least two different amino acids. Examples of amino acids are glycine, alanine, leucine, isoleucine, valine, methionine, phenylalanine, alkyl aspartate, γ- alkyl glutamate, s-acylornithine, #-acyllysine, o-benzylseraine, o-acylserine, o-acylthreonine, o-benzylthyrosine, s-benzylcysteine and #-alanine. The elastomer may be natural rubber, acrylonitrile-butadiene rubber, styrene-butadiene rubber, polyisoprene, neoprene rubber, chlorosulphonated polyethylene, polyurethane, polyacrylic ester, methoxy-methylated nylon-6 or a mixture thereof. Examples of suitable dispersing media are given. A non-solvent for one or both of the polyamino acid and elastomer may be mixed with the dispersing medium. The base cloth may be a raised cloth, a woven cloth, knitted cloth and may be of natural fibres such as cotton, hemp, wool and silk, regenerated fibres such as staple fibre and rayon, synthetic fibre such as polyamide, polyester, polyacrylonitrile, polyvinyl chloride or mixtures thereof. The fabrics may be textiles of plain weave and twill weave or those of mixed weave and raised cloths. The coating may be applied by doctor knife, reverse roll, floating knife coater. The coating may be repeated to form various multi-layer structures by varying the concentration of solid matters, types of resins and the ratio of mixed resins. The products may be embossed.
Patent GB-1023178-A (GB)
Title: Improvements relating to filters
IPC: B01D35/147
Filed: 1964-08-04
Abstract: A filter unit comprises a first filter element 28, Fig. 1 (not shown), of relatively fine material and a second filter element 29 of relatively coarse material, and valve means 50 which prevents flow of liquid to be filtered through the second element except when a predetermined pressure drop across the first element is exceeded. The elements are annular, axially aligned, have perforated walls 30, 43, 40, and are divided by an annular plate 39 supporting the valve 50.  Oil enters through an annular passage 14 and ports 18 in housing base plate 16, pressing aside resilient gasket 66, and enters annular space 27 around the elements.  Oil passes through element 28 to central chamber 44 and outlet passage 12.  When the first element 28 becomes clogged, oil pressure in central chamber 42 within element 29 forces valve head 50 from opening 45 in plate 39 against spring 49, thus allowing oil flow through the second element 29.  When element 29 clogs, oil forces up member 59 of by-pass valve 38 against spring 62 and both elements are by-passed.  Alternatively the bypass valve is of the same type as the valve 50 and is situated centrally at the end of the second element remote from the first element.  This embodiment is not of the throw-away type as in Fig. 1, and the filter elements, enclosed in knitted fabric, together with the valves form a replaceable assembly.  Air and sludge may separate from the oil outside an open-bottomed baffle surrounding the elements.
Patent GB-1033914-A (GB)
Title: Triarylaminium salts, manufacture of material opaque to infrared radiation and method for protecting objects from infrared radiation
IPC: G02B5/22
Filed: 1963-08-06
Abstract: The invention comprises compounds of formula <FORM:1033914/C2/1> and tris-(p-dimethylaminophenyl)aminium fluoborate. In the formula, R is a C2- 4 alkyl radical and X- is an anion, preferably perchlorate, fluoborate, trichloroacetate, trifluoroacetate, hexafluoroactinionate or hexafluoroarsenate. Other anions and compounds wherein R is a C1 or 5 alkyl radical are also described. The compounds are prepared by reacting the appropriate tris-(p-dialkylaminophenyl)amine with a soluble silver salt in an organic solvent solution such as acetone or dimethylformamide.ALSO:Polymeric materials are rendered at least semi-opaque to near infra-red radiation by incorporating at least 0.01 weight per cent of a compound of formula <FORM:1033914/C3/1> wherein R is C1- 5 alkyl and X- is an anion. Specified materials are cellulose nitrate and acetate, regenerated cellulose, ethyl and methyl cellulose; polystyrene, polymers and copolymers of a -, o-, m- and p-methylstyrene and of a -ethylstyrene; polyvinyl butyral, polyvinyl chloride and chloride-acetate, polyvinyl acetate and its hydrolysis products; polymers and copolymers of methyl acrylate, methyl methacrylate, acrylamide, methylol acrylamide and acrylonitrile; polyethylene, polypropylene, polyesters, alkyds and poly(allyl diglycol carbonate). In examples, the infra-red absorbers were applied to (a) films supported on glass and cast from acetone solutions of cellulose acetate or polymethylmethacrylate; (b) the same polymers in (a), by milling; (c) polymethylmethacrylate or polyallyldiglycol carbonate, by a "dyeing" technique.ALSO:Glass and plastic material are coated with infra-red absorbers of formula <FORM:1033914/B1-B2/1> wherein R is C1-5 alkyl and X- is an anion. In example, slides are coated with such components (a) in cellulose acetate by dipping, (b) in polymethylmethacrylate by dipping, (c) by burnishing with finely divided compound optically followed by overcoating with mineral oil or alkyd resin (d) by immersion in a heated bath containing an aqueous ethanol solution of the absorber and methyl salicylate.
Patent GB-478536-A (GB)
Title: Improvements in and relating to processes for the saponification of oils, fats and the like
IPC: C11D13/02
Filed: 1936-11-12
Abstract: Neutral fats or oils are saponified by heating them under pressure with an aqueous solution of an alkali metal carbonate, the pressure on the materials being regulated throughout the operation, so that it remains equal to or does not rise above the pressure of saturated steam at the temperature of operation, by allowing the carbon dioxide developed by the reaction to escape. The supply of heat to the reacting materials is preferably regulated at the same time.  An electrolyte, e.g. sodium chloride is preferably added to the mass under treatment.  3 tons of a mixture comprising 40 per cent palm kernel oil, 40 per cent palm oil, and 20 per cent earth nut oil are mixed in an open pan with 0,65 tons calcined soda in 2,2 tons water to which 30--150 kgs. sodium chloride are added.  The mixture is forced in small quantities at a time into an autoclave of 10 cubic metres capacity and steam is injected until the pressure rises to 6--9 atmos. at a temperature of 160--170 DEG  C. under which conditions the reaction is maintained by regulating the escape of the carbon dioxide and the supply of steam.  Autoclaves made of or lined with copper, nickel, chromium or stainless steel are preferably employed.
Patent GB-1436885-A (GB)
Title: Wire printing devices
IPC: B41J2/275
Filed: 1973-06-29
Abstract: 1436885 Selective printing AUTOTRONICS INC 29 June 1973 30965/73 Heading B6F A needle printer has a printing head 10 whose frame 11 carries seven coils 13 which when energized attract an armature 19 towards their core 15. Each armature 19 is on a resilient cantilevered member 20 having one end secured by bolts 21 to the frame 11 and its opposite end carrying a printing wire 22 in a jewel lined cylinder 23. On energizing a coil 13 the air gap 25 is closed and the armature 19 is so placed on the member 20 that the amplitude of the needle's movement is three times that of the armature 19.
Patent GB-371326-A (GB)
Title: Motor synchronised by braking and its application
IPC: H02P29/00
Filed: 1930-10-16
Abstract: 371,326. Synchronous movements. COMPAGNIE POUR LA FABRICATION DES COMPTEURS ET MATERIEL D'USINES A GAZ, 12, Place des Etats-Unis, Montrouge, Seine, France. Oct. 16, 1930, No. 31015. Convention date, April 8. Void [Published under Sect. 91 of the Acts]. Addition to 351,137. [Class 40 (iii).] In a synchronous movement in which a braking action is a function of the synchronizing frequency, the braking action is also a function of the rotation of the axle XY to be synchronized. A commutator c on the axis applies a negative charge to the grid of a valve during each half rotation. The synchronizing voltage s is also applied to the grid through a transformer t. The resulting anode current passes through an electromagnet e which acts on a disc d on the shaft.
Patent GB-358298-A (GB)
Title: Improvements in or relating to bottle capping machines
IPC: B67B3/02
Filed: 1930-10-16
Abstract: 358,298. Operating clutches. JONSSON, A. J., Link÷ping, Sweden. Oct. 16, 1930, No. 31049. [Class 80 (ii).] In a bottle-capping machine, power-means for operating the bottle rest comprises a main driving- shaft 31 with a driving pulley 30 loosely mounted on it carrying a fixed slotted disc 39, an element x being rigidly connected to the shaft ; the element x carries a spring-pressed clutch bolt 38 which is pulled outwardly to disconnect the drive at certain times by a spring-pressed bolt 36. The action of this device is as follows:-With the machine in the position shown in Fig. 5, the sliding member 42 is pulled downwardly by a pedal &c., the cam surfaces 41 moving the roller 43 and therefore the bolt 36 to the withdrawn position. The bolt 38 is then free to move to connect element x and disc 39 with the main drive to drive the shaft 31. This shaft through gears 32, 33 drives the shaft 34 having attached thereto a cam 35 which through a roller, piston, and springs raises or lowers the bottle rest 4. Also attached to the shaft 34 is the member 45 which carries the bolt 36 and hence, after the shaft 34 has made a certain number of revolutions depending upon the gearing ratio 32, 33, the bolt 36, with a wedge-shaped head, will again come to the position shown in Fig. 5 where it will lift the bolt 38 and disconnect the drive.