baber/WOPTO huggingface dataset:
Patent GB-185062-A (GB)
Title: Improvements in thread-tensioning devices for sewing machines
IPC: D05B47/00
Filed: 1922-01-13
Abstract: 185,062. Willcox & Gibbs Sewing Machine Co., Ltd., (Willcox & Gibbs Sewing Machine Co.). Jan. 13, 1922. Sewing-machines; thread-tensioning devices.-A tension-device comprises several tension means separately adjustable to vary the tension of each thread but all adapted to be put into or out of operation simultaneously on the movement of another part such as the presser-foot. The threads are passed through tubular guides 34 and between tension springs 30, separately by screws 35, and a plate 23 pivoted at 25 to the frame of the tension-device. A lug 26 on the hinged plate engages a stepped recess 27, 28 in a rod 18 rigidly connected to a shaft 16 movable endwise agamst a spring 19 by an arm 21 connected to the presser-foot. When the lug 26 rests on the part 28 of the reeess, the plate 23 is held in a forward position to nip the threads; when the rod 18 is shifted to allow the lug to drop into the lower part 27 of the recess, the plate moves away from the springs to release the threads. The device is specially applicable to machines of the kind described in Specifications 6036/12 and 6037/12.
Patent GB-1127953-A (GB)
Title: Improvements in or relating to fluid devices
Inventor: DATWYLER WALTER FREDERICK
IPC: F15C1/16
Filed: 1967-01-09
Abstract: 1,127,953. Fluid regulating devices. BENDIX CORP. Jan. 9, 1967, No. 1176/67. Heading G3H A fluid regulating device comprises a chamber 10 provided with inlet and outlet 14, 16 for a supply fluid, a number 18 which receives fluid through inlet 24 and produces a vortex in chamber 10, an outer chamber 33 and a tube 38 which is located in the path of the jet issuing from chamber 10 and is provided with a pressure gauge 44. When the device operates as an amplifier, inlet 24 receives a two part supply of pressure fluid, one part of which is of constant pressure and is arranged to bias the device to operate on the straight line part of the operating curve Fig. 3 (not shown) and the other part of which is of variable pressure and produces corresponding variations in the pressure within tube 38. In a modification Figs. 5 and 6 (not shown) the device has a porous annulus 74 (e. g. of steel tubes) arranged between number 18 and chamber 10, and is used as a rate of roll sensor on an aircraft. In another modification Fig. 8 (not shown) the device is used to produce pulses, the frequency of which are proportional to the pressure applied to inlet 24. In further modifications (not shown) the device is used to gauge liquid level in chamber 33 and, by closing outlet 35 and removing plug 42, it can be used to regulate the supply of fluid into either a rocket nozzle or a cylinder of a piston engine.
Patent GB-1072313-A (GB)
Title: Method of converting a uniform rotary motion into an intermittent reciprocating motion and apparatus for the carrying out thereof
IPC: F16H27/02
Filed: 1965-01-11
Abstract: 1,072,313. Gearing for converting rotary motion into oscillating motion. H. DROLL. Jan. 11, 1965 [Jan. 11, 1964; July 9, 1964], No. 1221/65. Heading F2Q. Rotation of an input shaft 21 is converted into oscillation of an output shaft 71 by mechanism comprising a planet carrier 25 secured to the input shaft 21, a planet 31 meshing a planet 32 which is coupled to a fixed gear 35 by a shaft 33 and gear 34, and a crank arm 37 secured to a planet shaft 29 and having a crank-pin 38 which engages a bore in a slide block 42. A rack 45 is carried by the slide block 42, which is mounted on parallel guide bars 43, 44, and a pinion 46 meshes the rack 45. An adjustable throw crank 49 is attached to a shaft 48 carrying the pinion 46 and a crank pin 51 engages a bore in a slide block 55 mounted on parallel guide bars 56, 57. A pinion 65 is slidably mounted on shaft 71 and meshes a rack 64 on the back of the slide block 55. The absolute speed of the planet shaft 29 is three times that of the input shaft 21, and the radius of crank arm 37 is between one eighth and one ninth, inclusive, of the distance between the axes of shafts 21 and 29. In a modification, Fig. 7 (not shown), movement of a slide 42<SP>1</SP> is transmitted to a toothed sector 93 by a pivoted lever 88 and link 89. The lever 88 is free to slide longitudinally in a pivot bearing 95, 96, the axial position of which may be varied by actuation of a power cylinder 108 and piston 109 to move a yoke 106 carrying the bearing 95, 96 against an adjustable face cam 115.
Patent GB-672326-A (GB)
Title: Flow-equalizing means for two or more liquid streams
Inventor: MORRIS JOHN NEVILLE
IPC: F02C7/228
Filed: 1950-01-18
Abstract: 672,326. Distributing liquids. S. U. CARBURETTER CO., Ltd. Nov. 9, 1950 [Jan. 18, 1950], No. 1293/50. Class 21 [Also in Groups XI, XXVI and XXIX] The volumetric rates of flow of liquid streams under approximately the same head and derived from a single source are equalized by rapidly transposing portions of the respective streams in a continuous manner without interrupting the flow in any of them. In Fig. 1, a rotor 2 with two diametrically opposed ducts 3, 4 is rotatably supported in a casing 1 by a spigot 6 and a continuously driven shaft 5 and is urged against the facing 11 of the end wall 8 by a spring 10. Liquid is supplied through an inlet 14 and is discharged in two equal streams through outlets 15, 16. The outlets 15, 16 communicate with arcuate grooves 12, 13 in the facing 11. The ends of the grooves 12, 13 are sufficiently close to be bridged by the ducts 3, 4. The arcuate grooves may alternatively be in the adjacent end face of the rotor. More than two rotor ducts may be provided to increase the degree of accuracy of flow-equalization or to enable the same accuracy to be obtained at a lower rotor speed. Such accuracy is increased by increasing the rotor speed or lengthening, the rotor ducts. The latter need not be straight and may be of coiled or labyrinthine form. In Fig. 4, the supplies of liquid fuel through pipes 24, 25 to the spill burners 26, 27 of a gas turbine fuel system (see Group XXVI) are equalized by a flowequalizing device E1 similar to that shown in Figs. 1 and 3.
Patent GB-1069730-A (GB)
Title: Fluidized bed processes [reactions]
IPC: C21B13/00
Filed: 1964-04-19
Abstract: Iron ore is reduced to 85 to 98% metal by countercurrent contacting the ore with a reducing gas containing hydrogen and 0 to 40% by volume carbon monoxide based on total hydrogen and carbon monoxide at 1000 to 1600 DEG F., the ore consisting of a fluidized bed of particles of 4 mesh to minus 325 mesh in size, removing fines e.g. particles of minus 325 mesh from the fluidized bed and recycling a sufficient amount of the fines to the fluid bed to maintain efficient fluidization of the bed e.g. maintaining the concentration of fines in the bed between 4 and 20%. The reduction can be carried out in two, three or more bed systems. In Fig. 1 (not shown), fluidized bed 103 of iron oxide particles is reduced at 1200 to 1400 DEG F., and 5 to 30 p.s.i.g. by a reducing gas consisting of hydrogen and carbon monoxide which also fluidizes the bed.  The fines are entrained in the fluidizing gases and separated therefrom in cyclone separator 115 before return to bed 103, or removal from the reaction zone, or return to bed 105 through 120 and valve 122. Partially reduced iron ore from bed 103 overflows through 108 into bed 105 maintained at 1200-1600 DEG F., and 5-60 p.s.i.g. pressure and fluidized by the reducing gases.  Fines entrained by the gases are separated in cyclone separator 112 and returned to bed 105 or removed from the reaction zone.  The fines concentration in beds 103 and 105 is obtained by density measurements and the fines recycle is adjusted to obtain the desired fines concentration.ALSO:Iron ore is reduced by countercurrently contacting the ore with a reducing gas comprising hydrogen and 0 to 40% carbon monoxide at 1000 DEG  to 1600 DEG  F., the ore being in the form of a fluidized bed of particles of say 4 mesh to minus 325 mesh in size, removing fines from the fluidized bed and recycling a sufficient amount of the fines to the bed to maintain efficient fluidization of the bed, e.g. sufficient to maintain a finer concentration of 4-20%.  In the first stage of a two-stage process for reducing iron oxide to metal, ferric oxide is reduced in fluidized bed 103 to ferrous oxide at 1200 to 1400 DEG  F. and 5 to 30 p.s.i.g. (Fig. 1, not shown). Particles of 325 mesh size are entrained in the fluidizing gases which are formed by the reducing gases, separated therefrom in cyclone separator 115 before return to bed 103, removal from the reaction zone or passage to the ferrous reduction zone.  The fines concentration in the bed 103 is obtained by density measurements and the fines recycle is adjusted to obtain the desired fines concentration.
Patent GB-563569-A (GB)
Title: Improvements in saw-tooth wave form electric oscillation generators
IPC: H03K4/34
Filed: 1943-01-27
Abstract: 563,569. Valve generating circuits. BRITISH THOMSON-HOUSTON CO., Ltd. Jan. 27, 1943, No. 1364. Convention date, Jan. 27, 1942. [Classes 40 (iii) and 40 (v)] In a saw-tooth current generator an electron discharge device is used having two control electrodes, on one of which a regenerative voltage is impressed in response to output current variations while on the other a degenerative voltage is impressed dependent on anode voltage variations to linearise the wave-form. Fig. 1 shows a beam power tetrode operating as a blocking oscillator with a degenerative feedback produced by the non-inductive impedance network 25, 27 connected between the screen grid and the cathode and having a time-constant shorter than the fundamental period of the oscillations. Adjustment of resistance 25 provides the linearity control, while resistance 22 provides the speed control, capacity 27 may be comprised wholly by inherent self-capacities. Distortion of waveform due to parasitic oscillation is suppressed by the resistance-condenser combination 28, 29. Alternatively, the condenser 29 may be replaced by an inductance or the damping circuit may be connected across the deflecting coils. Synchronizing impulses are applied to the control grid 12 through the input coupling network 31, 32. If the complete television signal 35 is applied to the grid 12, the positive bias of this grid is so adjusted that only the most negative portions of the wave are effective to trigger the oscillator. In a modification, Fig. 2, a pentode is used and an adjustable tapping 45 is provided to adjust the grid bias for synchronizing and to provide an auxiliary linearity control. Specification 523,476 is referred to.
Patent GB-236827-A (GB)
Title: Improvements in or relating to the production of tight, dense and chemically indifferent bodies or articles containing diatomic earths
IPC: C04B28/32
Filed: 1925-01-16
Abstract: 236,827. Ohisen, J. U. A. Jan. 16, 1925. Oxychloride compositions. - Infusorial earth, kieselguhr, moler, &c. is impregnated with a bituminous or resinous substance for use as an aggregate in concretes wherein hydraulic binding-agents, e.g. Sorel cement, are used. Other fillers such as asbestos or slag-wool may be added. The mixture is moulded under pressure. Suitable proportions are 3 parts of diatomic earth, 1 of impregnating-agent, 2 of other filling- materials, and 1 of cement.
Patent GB-723236-A (GB)
Title: Process for producing a hard and wear-resistant surface on ferrous bodies
IPC: C23C10/28
Filed: 1952-01-17
Abstract: A ferrous article having an available carbon content of 0.4 per cent or more, depending on the depth of ferrous material beneath the surface, is coated with at least one metal of the group Ti, Nb, Ta, V, Mo, W or with one or more of these metals and Cr, and is then heat-treated so that the coating metal combines with carbon of the ferrous material to form an integral layer of carbide, the carbon content of the ferrous material being so initially selected in relation to the depth thereof that sufficient carbon is available for forming carbide with substantially all the deposited metal.  The coating metal may be applied by dipping, spraying or electrolytically.  The necessary carbon content may be provided by carburizing a low carbon base, e.g. in a pack of 20 per cent barium carbonate bound to hardwood charcoal with oil, tar or molasses, at 925 DEG  C.; a copper stop coating may be applied at selected parts to suppress carburization.  Prior to coating, surface imperfections may be removed electrolytically or by immersion in 20 per cent sulphuric acid for 2-10 minutes or in 50 per cent hydrochloric acid at 85 DEG  C. for 2-10 minutes.
Patent GB-293274-A (GB)
Title: Improved method of accelerating and enhancing the decomposition of sewage sludge in digestion chambers
IPC: C02F3/28
Filed: 1928-01-16
Abstract: 293,274. Pr³ss, M. Jan. 16, 1928. Bacteriological processes; plant.-The decomposition of sludge in digestion chambers is promoted by repeatedly mixing the whole of the digesting sludge with fresh sludge at short intervals. The mixing may be effected by passing the two kinds of sludge together through high-speed centrifugal pumps. The sludge digestion chamber may be artificially heated to about 25‹ C. The gases given off during the digestion may be used for this purpose.
Patent GB-534317-A (GB)
Title: Improved device for mounting a stanchion anchor bolt in a concrete casement
IPC: E04G15/06
Filed: 1940-01-25
Abstract: 534,317. Fixing anchor bolts, ground anchors. MUSGROVE, A. Jan. 25, 1940, No. 1500. [Class 20 (ii)] [Also in Group I] A device for mounting a stanchion anchor bolt b in a concrete casement comprises a core in the form of a removable downwardly tapered steel cylinder c closed at the top wherein is rotatably fitted a threaded milled sleeve s for engaging with the screw-threaded upper end of the bolt, the lower headed end h of the bolt receiving a plate p which, during the moulding of the casement about the cylinder, serves as an abutment for the lower end of the cylinder and becomes embedded in the concrete in which it is allowed to remain. For removing the cylinder after use the sleeve s is unscrewed from the bolt and the cylinder then lifted by the loop l.
Patent GB-705498-A (GB)
Title: Improvements in or relating to electronic information-storage devices
Inventor: WILLIAMS FREDERIC CALLAND
IPC: H01J31/60
Filed: 1950-01-19
Abstract: 705,498. Digital electrical calculating. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Jan. 10, 1951 [Jan. 19, 1950], No. 1501/50. Class 106 (1). [Also in Group XL(c)] In a cathode-ray tube information storage system of the kind described in Specifications 657,591 and 705,474 in which digital information is stored as the state of charge of discrete areas of a storage screen and in which a positive charge is first established by secondary emission from the screen caused by the bombarding C.R. beam to record a digit of one kind ; to record a digit of another kind, an oscillating voltage is applied to an electrode capacitively coupled to the storage surface during bombardment thus varying its secondary emission ratio. In this way the maximum use is made of the recording surface for the storage of information by ensuring that the whole of the charge in each area allocated to the recording of a digit contributes to the reading of the recorded information. Fig. 2 shows a storage system in which a reading unit R.U. is fed with strobe pulses, Fig. 3 (a), at the digit repetition frequency from a generator 5 whilst the writing unit W.U. is fed with "dot" and " dash waveforms, Figs. 3 (b) and 3 (e) respectively from generators 6 and 7. As described in Specification 682,156, "dot" pulses are normally fed to the control grid of the C.R. tube and are written upon the storage screen for every digit in the form of a positive charge. An R.F. oscillator 8 is keyed from the pulse generator 11 to produce a burst of very high frequency oscillations, Fig. 3 (d) during that portion of the "dash" pulse which is longer than the corresponding "dot" pulse. This oscillation is applied via a filter 9, which prevents the normal pickup plate signals from the C.R. tube 1 passing to oscillator 8, to a plate 2 which is capacitively coupled to the storage plate of the tube. This causes a corresponding variation of the potential of the storage surface so that if the C.R. beam is turned on by a "dash" wave the charge remaining on the bombarded spot when the beam is turned off will differ from that remaining after a "dot" pulse has been recorded and will have a polarity dependent upon the secondary emission ratio of the storage screen surface. The beam of the C.R. tube is deflected by a stepped sawtooth waveform so that no movement of the beam occurs during a digit interval. Filter 10 excludes the output of the R.F. oscillator 8 from the amplifier 3. Specification 705,492 also is referred to.
Patent GB-123329-A (GB)
Title: Improvements in or relating to Obturator Rings and Keeper Rings therefor.
Inventor: HECHT JOHN SEBASTIAN
IPC: F16J9/02
Filed: 1916-02-02
Abstract: 123,329. Hecht, J. S., and Dowdell, A. T. Feb. 2, 1916. Piston packing. - A split metallic piston-packing ring of the cup-leather type is formed with a curve at the bend A<1>. The corresponding edge of the packing-ring groove, or of the keeper ring, is similarly rounded. Specifications 1601/66, 7422/84, 8571/15, and 123,328, [Class 83 (ii), Metal articles &c.], are referred to.
Patent GB-302071-A (GB)
Title: Improvements in air drying apparatus for oil immersed electrical transformers
IPC: H01F27/14
Filed: 1928-01-17
Abstract: 302,071. Allmõnna Svenska Elektriska Aktiebolaget. Jan. 4, 1928, [Convention date]. Drying air.-Air-drying apparatus for oilimmersed electrical transformers comprises a series of desiccant containers 2 removably mounted upon a bolt 4 and supported in a casing 1 having an oil-sealed air inlet 11 and an outlet 12 to the expansion vessel of the transformer. The containers are formed with radial ribs and with air outlet ports 8, the containers being disposed so that ports are staggered relatively to one another. By forming diametrically opposite openings in the rims of the containers, and passages in the casing, the air may pass over the containers in parallel. The water absorbed by the desiccant drains into the bottom of the casing.
Patent GB-870623-A (GB)
Title: Improvements relating to electric lighting fittings
Inventor: CLARKE MAURICE GEORGE
IPC: F21V29/00
Filed: 1957-01-16
Abstract: 870,623. Street lighting fittings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. March 24, 1958 [Jan. 16, 1957], No. 1651/57. Class 75(4). [Also in Group XL(a)] A lighting fitting especially for street lighting comprises one or more tubular fluorescent lamps mounted within an enclosure, part at least of which is of light transmitting material, and which has a volume not greater than ten times the volume of the envelope of the lamp or lamps, the fitting being mounted with its longitudinal axis inclined at an angle of more than 15 degrees and less than 45 degrees to the horizontal so that the lower end of each lamp is maintained solely by convection at a lower temperature than the upper end and constitutes a cool region for condensation of vaporizable metal within the lamp envelope. The fitting comprises a metal canopy 2 mounted by an elbow 4 on a post 5 and carrying a U-shaped enclosure 3 of acrylic resin on the side of which reflecting elements (not shown) may be mounted. The enclosure 3 contains three tubular fluorescent lamps 1 which may be not more than an inch apart, and is secured to the canopy by clips 9. A specular reflector may be mounted above the lamps and the control gear 6 of the lamps may be carried on the underside of the canopy.
Patent GB-219247-A (GB)
Title: Improvements in golf putting devices
IPC: A63B63/00
Filed: 1924-01-21
Abstract: 219,247. Scott, A. B. Jan. 21, 1924. Golf-practising appliances.-A device for practising golf putting, and comprising a casing, indicating mechanism carried thereby, and a buffer to receive the impact of the golf ball so as to operate the indicating mechanism is provided with means for automatically locking the indicating mechanism in operated position. The ball is driven against a pendulum 16, connected by gearing to a pointer 26 which indicates on a dial 27 the distance the ball would have travelled in the normal course. A ratchet wheel 22 and a pawl 32 prevent return of the pointer and the pendulum, until the pawl is released by a handle 33. The ball when out of use is retained in a clip 10. In a modification a spring-pressed plunger bears upon the side of the ratchet wheel 22 and retards the movement of the pendulum. The pressure of the plunger may be varied by rotating an external pointer over a dial marked " turf," " grass " and " carpet " in order that correct indications mav be obtained when practising on different surfaces.
Patent GB-1183561-A (GB)
Title: Electrical Edge Connector
Inventor: WELLS BRIAN GOODWILL
IPC: H01R12/72
Filed: 1968-01-11
Abstract: 1,183,561. Two-part couplings. ERICSSON TELEPHONES Ltd. 22 Nov., 1968 [11 Jan., 1968], No. 1704/68. Heading H2E. Sidewalls 13. 17 of a channel in an insulating body, preferably moulded plastics, of an edge connector for a circuit board each secures a row of resilient contacts 12 or 16, the contacts 12 or 16 of the rows being staggered in relation to each other and having free ends touching the opposite wall 13 or 17. By extending across the channel the contacts make good electrical contact even with a badly warped circuit board. A contact 12 may contact a stud 38 if a circuit board is not inserted, the stud 38 being connected in a circuit which indicates whether or not a board is inserted. A pair of touching contacts 29, 30 are provided which are either disposed opposite each other or are staggered as contacts 12, 16 and have offset free ends (35, 36) to counteract the stagger (Fig. 7, not shown). These contacts provide electrical continuity between a number of serially connected edge connectors when circuit boards are not inserted (Fig. 8, not shown), continuity being maintained on insertion of circuit boards, which break the connection between contacts 29, 30, by contacts 12, 16 via the circuitry on the boards.
Patent GB-1254992-A (GB)
Title: Improvements in electrochemical direct-current transformers
IPC: H01M10/44
Filed: 1970-01-13
Abstract: 1,254,992. Battery charging systems. SOC. DES ACCUMULATEURS FIXES ET DE TRACTION. 13 Jan., 1970 [21 Feb., 1969], No. 1705/70. Heading H2H. A system for changing a direct current from a low value to a high value comprises a number of stages 1, 2, 3 each of which except the first includes at least one storage battery, the first stage which can provide a very small current for a considerable time being used to charge the second stage which itself can produce a higher current than the first stage but for a shorter time, the second stage being used to charge the final stage which provides a very high output current but for a very short period. More than three stages may be used and the first stage may be a lithium cell, an air-metal cell, a nuclear or isotopic cell or a wind driven generator. The other stages may each comprise more than one storage battery and each of the batteries in a stage may be charged successively from the preceding stage. In an example the first stage may supply a current i 1  of 82 milliamperes for 320 hours, the second stage i 2  of 1À6 amperes for 1 hour and the third stage i 3  of 2000 amperes for 1 minute.
Patent GB-113130-A (GB)
Title: Improvements in Electric Fuses.
IPC: H01H85/38
Filed: 1917-02-05
Abstract: 113,130. Simplex Conduits, Ltd., Waterhouse, L. M., and Avila, J. F. Feb. 5, 1917. Fusible cut-outs.-In a bridge-carried fuse of the type in which a spigot c' on the bridge piece fits a socket in the base, the spigot is formed with a chamber c<3> having reversely set inclined slots c<4> leading therefrom to receive the fuse-wire F which lies across the open end of the chamber c<3>. Spring contacts .R, D are provided for connecting the fuse-wire and these and the terminals b<1>, d<1> are housed in recesses a<2> at opposite ends of the base.