baber/WOPTO huggingface dataset:
Patent GB-812317-A (GB)
Title: Improvements in combustion chambers for gas turbines and ram-jets
IPC: F02K7/10
Filed: 1957-05-17
Abstract: 812,317. Jet-propulsion plant. LEDUC, R. May 17, 1957 [May 18, 1956], No. 15721/57. Class 110 (3). [Also in Group XII] A combustion chamber assembly for a ramjet unit or a gas-turbine engine comprises a staggered series of annular flame tubes 1, 2 ... 6 of progressively increasing diameter in the downstream direction, the flame tubes being defined by partially-overlapping sleeve-like annular walls 7, 8 . . . 12. Each of these walls has a bell-shaped upstream portion such as 9b which defines the outer boundary of one flame tube 3, and a substantially cylindrical downstream portion 9a which defines the inner boundary of the adjacent flame tube 4. The trailing edge of each wall is substantially in line axially of the assembly with the upstream limit of the cylindrical portion of the adjacent wall lying radially outside it, and the leading edge of each wall is in line with, axially of the assembly, or slightly in advance of the upstream limit of the cylindrical portion of the adjacent wall lying radially inside it. The leading portion of the bell-shaped portion 9b of each annular wall is shaped so as to be approximately cylindrical. The assembly of flame tubes is disposed within an outer casing 26, the propulsion nozzle 25 of a gas turbine jet engine being disposed centrally within the flame tube assembly, the surface of the nozzle 25 forming the inner boundary of the upstream annular flame tube 1. The annular walls 7, 8. . . 12 are supported at their leading edges on longitudinally-extending struts 24. The downstream annular wall 12 is not formed with a cylindrical portion such as 9a. Each annular flame tube 1, 2 . . . 6 is formed at its entry with an annular diffuser 14, and is provided with a flame holder comprising a series of radiallydisposed bars 13 of V-section pointing upstream and possibly also with a ring member 13a of V-section, also with a series of fuel injectors 15. The inner wall of each annular flame tube may be double-walled as shown at 9a, 9d so as to afford an annular passage 16 open at the upstream and downstream ends for the flow of cooling air therethrough and the walls 9a, 9d are perforated as at 17 so that streams of cooling air may pass therethrough. The walls 8a, 8b, 8d, 9a, 9b, 9d may be longitudinally corrugated as shown in Fig. 4, spacer members being disposed at axially-spaced intervals between the walls, each spacer comprising a pair of cylindrical members 21, 22 with a corrugated ring 23 therebetween the parts being bonded together. The wall portions 9a, 9b may be arranged to overlap as indicated at 18, 19 in Fig. 2, so that the boundary layer on the outer surface of the wall portion 9b is sucked off into the outlet of the annular flame tube 3. Alternatively, the wall 9b may be louvred to permit boundary layer removal.
Patent GB-1108103-A (GB)
Title: Improvements in or relating to piezo-electric crystal circuit arrangements
Inventor: FEWINGS DAVID JOHN
IPC: H03B5/32
Filed: 1965-04-13
Abstract: 1,108,103. Oscillating circuits. MARCONI CO. Ltd. 11 Feb., 1966 [13 April, 1965], No. 15732/65. Heading H3T. [Also in Division G1] The invention comprises means for compensating the effect of temperature variations on the frequency of a piezo-electric crystal having an " arched " characteristic, i.e. one in which the frequency is a maximum (or minimum) at the normal operating temperature and changes in the same direction for temperature variation of either sense. According to the invention, two potentiometers are provided, each including a thermistor 1, I<SP>1</SP> respectively in series with a resistance 2, 2<SP>1</SP> respectively, means being provided for utilizing voltages derived across the thermistor 1<SP>1</SP> in the one potentiometer and from across the resistor 2 in the other, to produce a control voltage varying with temperature which is applied to a frequency controlling device 13, e.g. a varactor diode in the oscillator circuit. The frequency characteristic is corrected by connexion of resistors 4, 4<SP>1</SP> in shunt with thermistors 1, 1<SP>1</SP> respectively. As shown, the potentials across thermistor 1<SP>1</SP> and resistor 2 are applied via D.C. coupled emitter-followers 5, 5<SP>1</SP> to the bases of transistors 6, 6<SP>1</SP> respectively: these transistors are biased to cut-off at the normal operating temperature by means of emitter biases from potentiometers including adjusting resistors 10, 10<SP>1</SP> respectively. Their collector currents pass through resistor 12 to develop voltages which are applied to the controlling device 13; adjustable emitter circuit resistors 8, 8<SP>1</SP> respectively are provided for controlling the temperature/control voltage characteristic. In addition further transistors 7, 7<SP>1</SP> are connected in parallel with transistors 6, 6<SP>1</SP> respectively, having emitter biases from potentiometers including adjustable resistors 11, 11<SP>1</SP> respectively which are sufficient to prevent these transistors coming into operation before a predetermined departure of the temperature from its normal operating value. Reference has been directed by the Comptroller to Specification 1,020,080.
Patent GB-1056227-A (GB)
Title: Production of aryl sulfides
IPC: C08G75/0236
Filed: 1964-11-18
Abstract: Diaryl, di(alkaryl) and aryl/aralkyl sulphides are produced at elevated temperature from aryl or aralkyl monohalides and alkali metal sulphides; a polar organic medium which is an amide, lactone or sulphone is utilized.  Examples describe the preparation of diphenyl and di(p-tolyl)sulphides.  Other specified products contain alkylphenyl, naphthyl, biphenylyl and terphenylyl groups.
Patent GB-825205-A (GB)
Title: A machine tool including an adjustable work supporting apparatus
Inventor: AUSTIN KENNETH TALBOT
IPC: B23Q17/22
Filed: 1955-06-01
Abstract: 825,205. Copy - milling; work - holders. NAPIER & SON Ltd., D. May 25, 1956 [June 1, 1955], No. 15745/55. Class 83 (3). An adjustable work-support comprises a supporting platform 1 having a face to which the workpiece 2, such as a turbine-blade, can be secured, a pair of supporting members 6 pivotally connected to two spaced points on the platform, and means for moving the members independently in two directions at right-angles to one another. The platform 1 has flanges 3 and is supported on the trunnions 4, 5 by the members 6. The trunnions 5 engage blocks 15 sliding in slots in the flanges 3 to allow the platform to be tilted. Each member 6 is clamped, by a pivot 17 and nut 22, on a slide 19 adjustable vertically on a pillar 25, whereon it is clamped by a screw 27. Each pillar 25 is adjusted by a screw 32 on a plate 30, the plates 30 being secured to the table 10. Micrometers 43, 49 and dial-gauges 42, 48 are used to adjust the slides 19 and pillars 25 accurately before each traverse of the table 10 past the milling- cutter 11, the adjustments being calculated to produce a required shape. For complicated shapes, the cutter and table are moved relatively to each other during each traverse by two-dimensional servo-copying means.
Patent GB-582114-A (GB)
Title: Improvements in or relating to filling supports for bags, sacks and the like
IPC: B65B67/12
Filed: 1944-08-19
Abstract: 582,114. Sack holders. TATE, J. H., and COOKE, N. Aug. 19, 1944, No. 15876. [Class 58] A filling support for bags, sacks or the like comprises two bent or L-shaped jaws or arms C, D pivoted on a horizontal axis and having end portions C4, D4, which form two opposite sides of a rectangular or curved bag supporting frame which is open at one side for the insertion of the bag, the bag supporting parts of each arm lying above the pivotal axis so that the weight of the bag tends to force the jaws or arms apart. As shown, the arms are bent and have loops C2, D2 for the attachment of a tension spring E. The support shown comprises a frame A<SP>1</SP> upon which can slide a block B, having a securing screw B<SP>1</SP> and carrying the pivot for the arms C, D. The arms are of wire bent to the shape shown and are urged apart by the tension spring E. In a modification the block B slides on a rod extending from a wall, and in another modification the base A of the stand shown is dispensed with and the lower end of the supporting rod is spiked to engage in the ground. The bag, sack or the like is rolled over the jaws which are each provided with two or more pins or lugs C5, D5 to hold the bag or the like firmly in position.
Patent GB-872774-A (GB)
Title: Improvements in means for adjusting the track tensioning-idler wheel of an endless track assemblage
IPC: B62D55/30
Filed: 1960-05-05
Abstract: 872,774. Endless track vehicles. EIMCO CORPORATION. May 5, 1960 [May 5, 1959], No. 15920/60. Class 79(1).  An idler wheel 22 of an endless track vehicle is mounted in a support 24 slidable on the vehicle frame 16 and is urged into tracktensioning contact with the track by a spring 38 which bears against a boss 104 of a member 110 attached to the sliding member 24. The other end of the spring bears against the end 78 of a member which comprises a cylinder 48 fitting in a fluid tight manner over a stationary piston 46 anchored to a bracket 30. Fluid, e.g. grease, under pressure, may be admitted to the interior 64 of the cylinder 48 through an inlet member 58 or controllably withdrawn through a member 60, the fluid pressure being regulated to adjust the pressure from the spring 38 of the wheel 22 against the track. The spring may also be compressed, e.g. during assembly, by rotating a nut 98 on a threaded shaft 96 connected to the cylinder member 48 and passing through the boss 104. The limit of compression of the spring is determined when the face 102 of the cylinder member contacts the boss 104.
Patent GB-1173968-A (GB)
Title: A Steplessly Variable Transmission
Inventor: SEGERSTAD CARL GUSTAF HARD AF
IPC: F16H29/22
Filed: 1967-04-07
Abstract: 1,173,968. Variable speed gear. C. G. H. A. SEGERSTAD. 7 April, 1967 [30 Nov., 1966], No. 15960/67. Headings F2D and F2K. The relative orientation of two superposed eccentrics 120, 270 is varied to change the speed ratio of a variable speed gear 10, e.g. of the type comprising cams 43 on layshafts and driving gear-wheels 47 through one-way jamming roller, or the like, clutches 60, the wheels 47 meshing an output wheel 48 on a shaft 41, by means of gearing 80 and 90 comprising an input wheel 70 fast on an input shaft 20 and meshing a pinion 130, on a pin 200, also meshing a freely rotatable intermediate wheel 100 meshing a fixed pinion 140 which meshes a wheel 110 having a pin-and-slot connection 330, 340 with eccentric ring 120, the pin 200 being connected to one end of a spring 401, the other end of which is fixed to the gear housing, allowing the pin to be turned about the shaft 20 to effect automatic speed variation in dependence on load. Eccentric 270 is fast with shaft 20, and a knob 201 on pin 200 facilitates manual override of the manual control. Other than bevel gears may be used (not further described). The cams 43 are spring-biased into engagement with eccentric 120.
Patent GB-1312274-A (GB)
Title: Tablet making machine
IPC: B29C43/08
Filed: 1970-04-03
Abstract: 1312274 Rotary tablet press PENNWALT CORP 3 April 1970 [1 May 1969] 15975/70 Heading B5A A tablet making machine comprises a rotatable die table 10 including a die 24 at least one punch 14 carried by the table, reciprocable parallel to the axis of rotation of the table and guided by a fixed cam structure 18, and is characterized in that the cam structure includes a rotatable cam roll 36 carrying a roller 46 having a broad end surface 48 engageable by the punch 14. Punch 14 engages surface 48 along the marginal portions thereof causing roller 46 to rotate on bearings 50. A second punch 16 is supported in table 10 for coaction with punch 14 and is guided by a cam structure 20, including a roll 38. The roller 46 on roll 38 is mounted for movement about an axis inclined at an angle of 8 to 10 degrees to the vertical so that when punch 16 engages the margins of surface 48, it is guided upwards into the cavity of die 24.
Patent GB-1307580-A (GB)
Title: 1-phenylpyrroles
IPC: C07D207/34
Filed: 1970-04-03
Abstract: 1307580 Halopyrroles E R SQUIBB & SONS Inc 3 April 1970 [16 April 1969] 15990/70 Heading C2C Compounds of formula wherein R 1  is chlorine, bromine and iodine and R 2  is hydrogen or the same as R 1 , are prepared by halogenation. They have antimicrobial activity.
Patent GB-496678-A (GB)
Title: Improvements in dyeing and printing cellulose esters and ethers
IPC: D06P1/12
Filed: 1937-06-09
Abstract: Azo dyes, forming on the material; cellulose esters or ethers, dyeing; printing.-Cellulose ester or ether materials are dyed or printed by producing thereon azo dyes from aryl-azo-amidines (obtained by combining diazotized unsulphonated arylamines with amidines of aliphatic, aromatic or heterocyclic carboxylic acids) and coupling components.  The development of the dyeing may be effected by the action of acids, e.g. acetic or formic acid, or of agents splitting off acid, e.g. ammonium sulphate or thiocyanate or diethyl tartrate.  Specified coupling components are phenols, naphthols, amines of the benzene and naphthalene series, aminonaphthols, hydroxy- and amino-substituted pyridines or quinolines, o-hydroxycarboxylic acids and their derivatives, e.g. 2 : 3-hydroxynaphthoic acid and its esters, amides and arylides, esters and arylides of acylacetic acids, pyrazolones and N-alkylquinolones. In examples, (1) acetate artificial silk is treated for 1 hour with an aqueous solution at 50-60 DEG  C., containing an alcoholic solution of phenyl-azo-butyramidine, the o-toluidide of 2 : 3-hydroxynaphthoic acid and soap, rinsed and treated for 1/2 hour with dilute acetic acid at 60-70 DEG  C. to obtain a fast red dyeing; (2) acetate artificial silk is treated for 1 hour with an aqueous soap solution at 50-60 DEG  C. containing 4-chlorophenyl-azo-butyramidine, rinsed and treated for 1/2 hour with an aqueous solution at 50-60 DEG  C. of 2 : 8-dihydroxy-1 : 2 : 3 : 4-tetrahydro-4-azaphenanthrene (cf. Specification 446,745) to obtain a violet dyeing; alternatively the goods may be treated first with a solution of the coupling component and then with a suspension of the azo-amidine; (3) acetate artificial silk is treated for 1 hour in a weakly alkaline aqueous solution at 60-70 DEG  C. containing phenyl-azo-benzamidine, the condensation product from b -naphthalenesulphonic acid and formaldehyde, turkey red oil and the 21-naphthylamide of 2 : 3-hydroxynaphthoic acid, rinsed, treated for 1/2 hour with dilute acetic acid as in (1), rinsed and soaped to obtain a clear fast red dyeing; (4) acetate artificial silk is printed with an aqueous paste containing p-tolyl-azo-benzamidine and the 41-chloro-21 : 51-dimethoxyanilide of acetoacetic acid dissolved in methylcyclohexanone, and gum arabic, and the material is then subjected to the action of steam at 100 DEG  C. containing acetic acid or treated with hot dilute acid to obtain a yellow print. Phenyl - azo - butyramidine is obtained by reaction of phenyldiazonium chloride with butyramidine, which is obtained by the action of aqueous ammonia on the butyrimido methyl ether hydrochloride produced by reaction of butyronitrile with methanol and hydrogen chloride.  4-Chlorophenyl-azo-butyramidine is obtained similarly from 4-chlorophenyldiazonium chloride and butyronitrile. Phenyl-azo-benzamidine and p-tolyl-azo-benzamidine are obtained similarly from phenyl- and and p-tolyl-diazonium chlorides respectively and benzonitrile.
Patent GB-723576-A (GB)
Title: Process for the production of sized untwisted artificial silk threads
IPC: D06B23/06
Filed: 1952-06-25
Abstract: 723,576. Finishing yarns. VEREINIGTE GLANZSTOFF FABRIKEN AKT.-GES. June 25, 1952 [June 29, 1951], No. 16009/52. Class 120 (3). An artificial silk thread or untwisted group of threads is sized for subsequent use as warp threads, excess size being removed by passage through squeeze rollers, and the thus obtained flattened cross section removed by passing the thread 1 through a groove in a roller 4, the groove being of such size that its sides engage the flattened thread and restore the rounded cross section.
Patent GB-612555-A (GB)
Title: Method for the manufacture of mustard plasters
IPC: A61L15/40
Filed: 1946-05-27
Abstract: A mustard plaster comprises mucilagenous material, e.g linseed meal disposed on or in the interior of a band of gauze, and mustard spread on a cloth or paper band, the two bands being united by stitching or adhesive.
Patent GB-564973-A (GB)
Title: Electric dry surface-contact rectifiers
IPC: H01L25/03
Filed: 1943-10-01
Abstract: 564,973. Asymmetrically-conducting resistances. STANDARD TELEPHONES & CABLES, Ltd. Oct. 1, 1943, No. 16114. Convention date, Oct. 3, 1942. [Class 37] A rectifying element comprises an electrode disc 25 coated with, say, selenium 26, and a counter electrode 27. These are assembled with a washer 30 and a contact member 31 which includes a tongue 32 with contact 33 extending into an open central space, the tongue being bent so as to make contact with the counter electrode 27. Stacks of elements are thus formed which may fit within a series of holesarranged with their axes parallel in a block of insulating material or within cylindrical casings, joined end to end, the stacks being suitably fitted with connecting lugs extending to the outside at the junctions.
Patent GB-223280-A (GB)
Title: Process and apparatus for separating intermixed divided materials of different specifc gravities
IPC: B03B4/02
Filed: 1923-06-21
Abstract: 223,280. Peale, R., Peale, R., and Peale, R. June 21, 1923. Separating by shaking-apparatus; pneumatic separating. - Apparatus for separating granular material of the kind in which the material is stratified by shaking it and simultaneously subjecting it to upward air pressure, the various strata being discharged at different points, comprises a comparatively broad and long shallow tray with a pervious bottom 1 forming the top of an air-pressure chamber and provided with a series of longitudinally extending walls 4, 5, 6 dividing the surface 1 into areas in which the material is subjected to a succession of separating operations. The walls may be parallel or divergent and may converge or diverge to or from the centre of the tray; they may be of uniform height or increase or decrease in height from the centre outwards; and they are connected to boards 56, 57 and may be interchangeable and adjustable. The mesh of the pervious bottom may vary in the areas defined by the walls, the central area having the largest' and the outer areas the smallest mesh. At the forward end an inclined plate 92 adjustable longitudinally straddles the walls and feeds off the top stratum to the guide plates 110, 111 and discharge shoots 107, 109. The passage for the material in the lowest stratum consists of a vertical end plate 74 and a horizontal plate 73 adjustable vertically and a hinged and weighted door 80. A slide may be provided over the discharge end of the tray bottom to regulate the backward air pressure which keeps back the material of an intermediate specific gravity. This material is discharged by the guide plates 112, 113 and shoots 114, 115. The frame. carrying the tray is mounted on springs 165 on a support 155 pivoted centrally and adjustable vertically at its ends by the pivoted and slotted bars 176, and is vibrated by a cam 174 engaging an adjustable abutment 170<c>, which causes a slow downward movement followed by a rapid return. An alternative vibrating mechanism consists of a cam which moves the frame, mounted on parallel links, against the pressure of a spring. The rapid return movement under the action of the spring is suddenly arrested by the contact of two stop members. The feed hopper 30 is made of pervious material at the sides and back, and the material is subjected to a preliminary cleaning by the air blown through it to remove the dust. The amount of air is regulated by a slide 40 and the feed of the material by a slide 37. In a modification, means are provided for adjusting the transverse inclination of the separating bed. As shown in Fig. 20, two units are mounted side bv side over the same air chamber. A central bar 198 is carried bv the stavs 194 bolted to the sides of the air chamber and has hinged to it at each side a separating device, which is adjustably supported at its other side by pivoted rods 200. A flexible air-tight connection 205 is provided between the separating trays and the air chamber. The vibrating arm 209 is carried bv the bar 198.
Patent GB-827297-A (GB)
Title: Steel grit and method for manufacturing same
IPC: C21D9/00
Filed: 1956-05-25
Abstract: Steel grit, for use with centrifugal wheels in blasting metal surfaces, has a hardness between 35 and 64 Rockwell C and consists of a martensitic steel that has been converted by heat treatment of an austenitic steel having 1.0-1.5% C, 0.4-0.9% Si, and one or more of Mn 1.0-1.5%, Cr 0.5-5.0%, Mo 0.3-5.0%, V 0.05-0.40%, Ni 0.5-2.5%, Cu 0.2-1.0% and the remainder Fe apart from usual impurities.  It is made from austenitic steel particles (shot) which are heated to 1400 DEG -1700 DEG F., quenched, then crushed into irregularly shaped fragments preferably less than 0.1 inch in major dimension, pieces in excess of this size being recycled for further fragmentation.  The grit may be tempered by a further heating 850 DEG -1000 DEG F. followed by air cooling.  Specification 667,016 is referred to.
Patent GB-424111-A (GB)
Title: Improvements in or relating to thermionic valves
IPC: H01J19/44
Filed: 1934-05-31
Abstract: 424,111. Thermionic valves. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. May 31, 1934, No. 16305. Convention date, May 31, 1933. [Class 39 (i)] The formation of a metallic deposit on the surface of an insulator between leads or electrode supports is prevented by surrounding the leads &c., wholly or partly by incombustible fibrous material, such as asbestos, magnesium silicate, glass wool or quartz wool, fixed near the surface. As shown in Fig. 2a, asbestos cord 8 is pushed over the wires 2 so as to shield the pinch 1, and is secured by clamps 9, 10 ; or the cord may be plaited around the wires. In other arrangements asbestos rings or tubes are mounted on the pinch around the wires. In the arrangement shown in Fig. 5 for spacing an anode from a grid, asbestos 17 is inserted between an insulator 15 and grooved glass knobs 16.