baber/WOPTO huggingface dataset:
Patent GB-608477-A (GB)
Title: Improvements in or relating to valves
IPC: F16K27/10
Filed: 1946-02-25
Abstract: 608,477. Making valves. DEWRANCE & CO., Ltd., and STOREY, J. M, Feb. 25, 1946, No. 5821. [Classes 83 (ii) and 83 (iv)] Uniting by fusion.-A pipe-line valve main part 1 is cast with nozzles 2, 3, and tubular extensions 4, 5 tapering outwardly from nozzlethickness to pipe-thickness are welded thereto, the extension lengths being sufficient to prevent distortion of the main part 1 when the extensions 4, 5 are welded to the pipe 14, 15. The main part 1 may be of cast steel, and the extensions 4, 5 may be machined from steel tubing, the composite valve is annealed before machining the valve seats &c. and welding into the pipe-line. The Provisional Specification states that a backing ring may be used during welding of the extensions 4, 5 to the nozzles 2, 3.
Patent GB-418817-A (GB)
Title: Improvements in or relating to induction furnace arrangements
IPC: H05B6/06
Filed: 1933-02-27
Abstract: 418,817. Systems for supplying highfrequency apparatus. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London, NUNN, C. H., c/o General Electric Co., Witton, Birmingham, and STOBIE, V., Langholm, South Drive, Harrogate. Feb. 27, 1933, No. 5947. [Class 38 (iv).] An arrangement for feeding a number of induction furnaces from a common high frequency source comprises on-load voltage regulating means for effecting independent regulation of the voltage applied to individual furnaces. In the arrangement shown, an autotransformer 23 is supplied from a high frequency generator 24 and is provided with two sets of on-load tap-changing gear 16, 22 whereby the voltage applied to the inductor coils 10, 11 of two furnaces may be independently regulated. In a modification, Fig. 2 (not shown) the auto-transformer is replaced by a transformer having two secondary windings each provided with on-load tap-changing gear for the independent control of two furnaces.
Patent GB-525506-A (GB)
Title: Improvements in or relating to the treatment of minerals by froth flotation
IPC: B03D1/02
Filed: 1939-02-22
Abstract: 525,506. Concentrating minerals. JORGENSEN, M. VOGEL-. Feb. 22, 1939, No. 5948. Drawings to Specification. [Class 82 (ii)] [Also in Group V] In froth flotation treatment of suspensions of minerals containing slimes, the finer particles of the suspension are removed by means of a centrifugal separator, the remainder is subjected to the froth flotation, and water is then removed from the concentrate or the reject or from both by means of a centrifugal separator so adjusted that no substantial amount of mineral particles is removed with the water. The initial separation may be such as to remove a fraction having a maximum effective particle size of less than 15 microns, as described in Specification 516,603, using, for example, a separator of the kind described in Specifications 479,872 and 479,891, the second separator being then adjusted to separate at the same or a lower particle size. The suspension may be diluted after the first centrifuging and before flotation. The water separated by the second centrifuging may be used again in the process, e.g., in preparing the suspension for the first centrifuging. The treatment of a suspension of calcium carbonate ore is described, both of the centrifugal separators being adjusted to separate at a maximum effective particle size of 2 microns. After removal of the fine particles the suspension was diluted and subjected to froth flotation. The concentrate which contained 83 per cent. of calcium carbonate, was dewatered in the second separator to a water content of 33 per cent. and was then suitable for direct introduction into a rotary kiln for cement manufacture.
Patent GB-677473-A (GB)
Title: Card index boxes
IPC: B42F17/02
Filed: 1950-03-09
Abstract: 677,473. Filing papers. RUF-BUCHHALTUNG AKT.-GES. March 9, 1950 [Feb. 13, 1950], No. 5983/50. Class 146 (i).  A card index box 1 has adjustable separator plates 3 furnished at their lower ends with transverse rods 4 adapted to be engaged, intermediate their length, between the floor 5 of the box and a notched or toothed rail 7 adapted to be moved relative to the floor 5. The floor 5 of the box is raised above the base and has lateral cut out portions 5a through which projections or lugs 6 on the plates 3 extend, the lugs 6 being secured .to the ends of the rods 4, which pass under the floor 5, so preventing upward movement of the plates 3. The rail 7 is secured at each end to the floor 5 by means of screws 22 which are arranged to give play so that the rail can be rocked with respect to the floor by an adjusting device to release the rods 4, so that the plates 3 can be adjusted longitudinally of the box. As shown in Fig. 4, the adjusting device comprises an arm 8, on the rail 7, projecting through an aperture 9 in the floor 5 and provided with a stop lever 11 pivoting about a pin 10 and drawn by a spring 12 towards the arm 8, the lever 11 having a lug 13 to engage the edge 17 of the aperture 9. When the arm 8 is pressed down against the pressure of a spring 14, between the rail 7 and a pin 15 on the end wall of the box 1, the lug 13 engages under the edge 17 to hold the rail 7 out of engagement with the rods 4 to allow free movement of plates 3, the rail 7 being raised by the spring 14 when the lug 13 is released by pressure on the lever 11. As shown in Fig. 6, the adjusting device comprises an eccentric lever 19 adapted to swing about a pin 20, the eccentric 21 engaging the rail 7 to move it downwardly against the pressure of a spring 14 secured between the rail 7 and an upwardly bent arm on the floor 5. The angle of the rearmost separator plate 3 is fixed by securing the rod 4 thereof by clamps to the floor 5 and furnishing the plate with lugs which lie on the top edge of the side walls of the box 1.
Patent GB-1528846-A (GB)
Title: Control signal generating circuits
IPC: H04B1/16
Filed: 1976-02-16
Abstract: 1528846 Transistor switching circuits; muting SONY CORP 16 Feb 1976 [22 Feb 1975] 05999/76 Heading H3T A circuit for generating a control signal indicative of the presence or absence of an AC power source comprises first and second full wave rectifying circuits connected to the power source to produce outputs of different relative phases, a circuit for mixing the outputs of the rectifying circuits and switching means responsive to the mixed signal to provide the control signal. As shown, the AC source is connected to a transformer 1 having a centre tapped secondary supplying a first full wave rectifier D1D4 directly and a second full wave rectifier D2D3 through a phase shifter C1R2 C2R3. The rectifier outputs are mixed at C. When the AC signal is present, transistor Ql is turned on to give a low control signal at D. The control signal may be used to mute a loudspeaker by opening switches S1S2 when the power is disconnected and a capacitor is provided to delay connection of the loudspeaker for a period after switch-on determined by the time constant of R12 and C3. At switch-off C3 discharges through Q2 and switches S 1 and S2 open substantially instantaneously.
Patent GB-700815-A (GB)
Title: Improvements in or relating to trolley brushes for electric vehicles
IPC: B60L5/08
Filed: 1951-03-14
Abstract: 700,815. Current collector for electric vehicles. SCHUNK & EBE, GES. March 14, 1951 [Feb. 14, 1949], No. 6136/51. Class 104 (3). In an electric vehicle current collector in which a sliding piece is mounted in a holder which can be swivelled around a vertical axis the sliding piece gradually diminishes in vertical cross section from one end to the other along its longitudinal axis and is mounted in a similar accurately shaped bed in the holder. The carbon sliding piece 1 is held by means of an angle piece 8 in a correspondingly shaped bed 5 formed in the cheeks 3, 4 of an holder 2. The piece 1 may be of a truncated conical or pyramid form, its large end being turned towards the oncoming trolley wire. A pin 10 prevents movement of the angle 8 and rotation of the piece 1 is prevented by a screw 11. The holder 2 is supported on or above the median plane of the piece 1 by horizontal pins 12, 13 mounted on a fork 14 which can be swivelled about a vertical axis 15.
Patent GB-366750-A (GB)
Title: Improvements relating to the lubrication of agricultural machines
IPC: F16N7/40
Filed: 1931-02-28
Abstract: 366,750. Force - feed lubricating. HARRISON, T. D., DREW, W., and EDGE, M. T., Albion Iron Works, Leigh, Lancashire. Feb. 28,1931, No. 6280. [Class 12 (iii).] A mowing or reaping machine is provided with an oil reservoir from which oil is forced by a pump driven by the machine to the bearings, whence excess returns to the reservoir. In a mowing machine comprising a wheel shaft 4 mounted in bearings 7, 7a and connected through a gear-box 10 to a crank shaft (not shown) which drives the knife-bar and which is mounted in bearings 9, the oil reservoir 11 is secured on the underside of the box 10 and the pump 13, mounted in the reservoir, is driven by means of a chain 24 from a sprocket wheel 25 on the lay shaft 26. The pump supplies oil to the top of the bearings 7, 7a, 9 through piping 14, 15, 17 .. 20, and excess oil returns from the bottom of the bearings to the reservoir through pipes 16, 21, 22, 23. Oil is supplied to the gear box through a normallyclosed aperture in the cover 27.
Patent GB-190068-A (GB)
Title: An instrument to be used by tailors for obtaining and transferring the slope of shoulders to the material
IPC: A41H1/02
Filed: 1922-03-03
Abstract: 190,068. Davies, A. J. March 3, 1922. Clinometers.-Relates to instruments of the clinometer type, for the use of tailors or garment fitters, and consists in a construction adapted to measure the slope of the shoulders. A pair of arms 3, 4 are hingec together, one being provided with h a spirit level 8 and a screw device 10 for varying the enclosed angle, and the other graduated.
Patent GB-715222-A (GB)
Title: Improvements relating to packing devices for sealing shafts
IPC: F16J15/00
Filed: 1952-03-12
Abstract: 715,222. Oil seals. DAIMLER-BENZ AKT.- GES. March 12, 1952 [March 12, 1951], No. 6453/52. Class 122(5) A shaft seal, particularly for shafts liable to rapid deflection such as motor axles, comprises two elastic sealing rings 3, 4, one 3 of greater axial width than the other 4, arranged in series along the shaft 2, each ring being in its own individual housing and pressed against the shaft by a metal spring ring 5, 6. Each housing is formed by two telescoping rings which clamp the sealing ring therebetween.
Patent GB-828134-A (GB)
Title: An electro-mechanical vibrator
IPC: H02K33/12
Filed: 1958-02-28
Abstract: 828,134. Electromagnetic interrupters. REGULA - VYVOJ, NARODNI PODNIK. Feb. 28, 1958 [March 1, 1957], No. 6518/58. Class 38 (5). [Also in Group XXXV] A reed 2 vibrates between two electromagnets 1, 1<SP>1</SP> which are energized through rectifiers with alternate half-waves of the supply to induce oscillation of the reed at supply frequency without the use of permanent magnets (see Group XXXV). As shown, the reed modulates an electric signal by contact change-over, two adjustable iron screws 9, 9<SP>1</SP> are mounted in the insulating coil carriers 8, and serve as cores for the electromagnets and as alternate contacts for the reed. Both reed and screws may be coated with a contact metal, e.g. gold. The insulating coil carrier carries a conductive electrostatic screen for the contacts.
Patent GB-954706-A (GB)
Title: Improvements in or relating to plastics sheathed cables
Inventor: MUIR LESLIE MALCOLM
IPC: H01B13/14
Filed: 1962-02-20
Abstract: 954,706. Electric cables. BRITISH INSULATED CALLENDER'S CABLES. Feb. 19, 1963 [Feb. 20, 1962], No. 6553/62. Heading H1A. In an electric cable of the type comprising an outer plastic sheath inside which is a moisture impervious metal foil, a tight bond between the foil and sheath is produced by pretreating the outer foil surface to produce a multiplicity of minute crevices, pits or depressions. The tight fitting plastic sheath is then extruded directly on to the foil covered core. The crevices &c. may be produced by electrolytic or electro chemical etching and, when the foil is of aluminium, the process described in Specification 715,525 is especially suitable. Foil may be applied to the core as a transversely wrapped longitudinally extending ribbon or one or more tapes may be helically wound. To overlap of the turns is not necessary but where they do, the overlapping edge may be pre-treated with thermoplastic material which softens during application of the sheath. Alternatively the thermoplastic tape may be interleaved at the edges of the foil. The etched foil may, if suitable, be anodised.
Patent GB-209330-A (GB)
Title: Improvements in cornice pole rings
IPC: A47H13/02
Filed: 1923-03-08
Abstract: 209,330. Herbert, Kershaw, & Co., Ltd., and Toye, A. H. March 8, 1923. Curtains, suspending.- Curtain rings of the type pressed from an annular blank, and having the seam at the side, are provided with exterior bands 3 and eyelets 6 with projecting parts to engage holes in the bands and rings. In a modification, the eyelets have shanks passing through the bands rings and riveted or bent open at their ends. The ring may also be formed from a length of tube having its ends 8, 9 telescoped and surrounded by an external band 10 as in Fig. 6, an eyelet 6 with lateral projections 5 being employed.
Patent GB-112881-A (GB)
Title: Improvements in the Production of Aluminous Compounds.
IPC: C01F7/743
Filed: 1917-05-11
Abstract: 112,881. Llewellyn, W. B., Spence, H., and Spence & Sons, P. May 11, 1917. Aluminium sulphate, neutral or basic, is obtained by circulating sulphuric acid through pieces of siliceous bauxite or the like in a vessel or series of vessels. The bauxite may be first calcined. The process may be combined with those described in Specifications 3805/12 and 22590/12, the bauxite being employed together with the uncalcined shales used according to these processes.
Patent GB-526423-A (GB)
Title: Improvements in bearings for spinning and twisting machine spindles
IPC: F16C35/08
Filed: 1939-03-01
Abstract: 526,423. Bearings for spinning and twisting machine spindles. STAUFERT, C. March 1, 1939, No. 6715. [Class 12 (i)] A step bearing for spinning and twisting machine spindles in which the whole of the bearing system is below the point of application of the driving power to the spindle comprises a flat bearing surface to take the axial thrust and an independently movable radially resilient collar bearing. As shown, the collar bearing has rollers 6 in a casing 5 with resilient studs 9 bearing against the inside of the casing 2. The end of the spindle 3 bears on a ball 11 carried with clearance in the bearing bore 10 and bearing on a spring pressed plate 14. Fixed pins 18 secure the plate 14 and loosely engage the casing 5. In a modification, a plate 21 is fixed in the casing 2, and a spring urged member 22 engages the thrust ball 11. In this construction a flange 33 on an upper collar bearing is loosely coupled to the casing 5 by a wire 36 engaging slots 34, 35 in the two parts. Specification 16,792/98, [CLass 12], is referred to.
Patent GB-1065944-A (GB)
Title: Improvements in or relating to seats
IPC: A47C1/026
Filed: 1965-02-17
Abstract: 1,065,944. Vehicle seats. P. A. RENTROP A.G. Feb. 17, 1965 [Feb. 22, 1964], No. 6742/65. Heading A4J. [Also in Division E2] A vehicle seat has a back-rest with side members 2 pivotally mounted in members 1 forming the connection between the seat and back rest. The back-rest can be adjusted from a normal sitting position to a rest position and thence to a lying position. Cams 3 interconnected by a rotatable spindle 4 are rotatable in members 1 and controlled by a knob 5. Each cam co-operates with a cam track 6 rigidly secured to each side member 2. A toothed segment 9 is pivotally mounted on cam 3. A recess 9a is formed in segment 9 for engagement by stop 7 rigidly connected to cam 3. A toothed segment 11 meshes with toothed segment 9. A pin 12 having two flats 12a, 12b is rigidly secured to segment 11. A half-moon shaped disc 8 is rotatably mounted on cam surface 6 of side member 2. A spring 15 suspended from side member 2 is rotatably secured by a connecting strip 16 to spindle 4 and exerts a contact pressure on disc 8 so that radial forces acting on cam 3 always pass through its axis of rotation 4. To adjust the back-rest the spindle 4 is turned in a clockwise direction to turn the cams 3 in the same sense and thus effect a clockwise pivotal movement of the back-rest. Stop 7 engages in recess 9a at the rest position of the back-rest, Fig. 3 (not shown). Further rotation of cam 3 will effect a positive connection between the cam and toothed segment 9 and a consequent rotation of toothed segment 11 in a counterclockwise direction until flats 12a, 12b lie in the longitudinal direction of slot 13. This will enable the back-rest to be lowered to a lying position. A spring 10 acting on the toothed segment 9 is tensioned when the back-rest is in the lying position. When the back-rest is returned to the rest position the tension in spring 10 is relaxed and toothed segment 11 is returned to its locking position.
Patent GB-974040-A (GB)
Title: Improvements relating to drain-off arrangements for autoclaves and like vessels
IPC: B01J3/02
Filed: 1962-02-21
Abstract: 974,040. Pressure-resisting doors. LEEDS & BRADFORD BOILER CO. Ltd., and H. M. H. PICKARD. May 21, 1963 [Feb. 21, 1962], No. 6755/62. Heading F2P. The hinged door of an autoclave or like vessel 1 is operatively coupled to a drain-off closure device 3 such that opening and closure of the device is achieved by imparting opening or closing movement respectively to the door. As shown, a drain cock 3 is coupled by a linkage 8 to an extension 10 of the hinge pin of the door, the linkage incorporating a lost-motion effect so that the door begins to open or close before opening or closure of the cock is begun.
Patent GB-145112-A (GB)
Title: Improvements in press buttons
IPC: A44B17/00
Filed: 1919-03-19
Abstract: 145,112. Day, G. H. March 19, 1919. Press-button fasteners.-In press-buttons of the type having grooves or channels joining adjacent thread apertures, a groove or channel B is provided between each aperture A and the next adjacent aperture on both sides of it forming a closed straight-sided figure surrounding the operative portion of the fastener.
Patent GB-984848-A (GB)
Title: Improvements in or relating to cutting tool assemblies for milling machines
Inventor: STREET FRED LEOPOLD
IPC: B23C5/24
Filed: 1963-02-21
Abstract: 984,848. Milling-cutters. LIVERPOOL TOOL & GAUGE Ltd. Feb. 21, 1964 [Feb. 21, 1963], No. 6930/63. Heading B3K. A milling-cutter comprises a cutter-holding ring 14 secured to a main body portion 10 and having a series of recesses in each of which a cutter 17. is adjustably locked. Each cutter is locked by a tapered cotter 19 and a nut 20 after being adjusted by a screw 22. The recesses for the cutters are enlarged as at 26, Fig. 5, to assist in firm seating of the cutters.
Patent GB-866080-A (GB)
Title: A shunt or series wound servomotor
Inventor: ERHART JIRI
IPC: H02P7/00
Filed: 1959-02-27
Abstract: 866,080. Control of D.C. motors. ZAVODY V.I. LENINA PILZEN, NARODNI PODNIK. Feb. 27, 1959, No. 6952/59. Drawings to Specification. Class 38 (3). A shunt or series-wound servomotor, with two reversing windings (either armature or field windings) supplied individually through thyratrons, is associated with transformers whose primary windings are in the anode circuit of each thyratron and whose secondary windings are connected through rectifiers to the grid circuit of the other thyratron. Thus, the ripple component of the anode current of the active valve is used to cut-off reliably the inactive valve. The single servomotor may be replaced by two motors which are mechanically and electrically interconnected.
Patent GB-1508693-A (GB)
Title: Crop harvesting apparatus
IPC: A01D46/00
Filed: 1976-02-24
Abstract: 1508693 Harvesting strawberries and like crops S K H & S Inc 24 Feb 1976 07130/76 Heading A1F A fan directs pressurized air through flexible ducts 30, 32 and beneath a crop, such as strawberries, from opposed sides to lift the crop which is then severed from the plant P by a sickle bar assembly 18 of a harvesting apparatus pick-up head 10 moving along a crop row. Dampers 36, 38, on the ends on ducts 30, 32, are adjustably secured to a frame 14, 16 for upward and downward movement and include damper blades which are adjustable to vary the air flow. A leafer chain 22 aids transfer of the crop onto a rearwardly moving belt 26. A pipe is arranged to spray water onto assembly 18 to clean the same.
Patent GB-565416-A (GB)
Title: Improvements in or relating to devices for producing stepped intensity light beams
IPC: G02B5/20
Filed: 1943-05-05
Abstract: 565,416. Photometric apparatus. KODAK, Ltd. May 5, 1943, No. 7150. Convention date, June 5, 1942. [Classes 97 (i) and 98 (i)] A device for producing a light beam of stepped intensities, particularly for the exposure and measurement of photographic sensitometric strips comprises a series of integrating tubes 12, Fig. 1, directed towards a light source 10, a light filter 11 of continuously and linearly graded density interposed between the tubes and light source, and means for rotating the filter in its own plane to vary the graduation of intensity across the beam emetging from the tubes. The integrating tubes consist of hollow tubes with completely reflecting inner walls, or of solid bars or plates of transparent material with totally-reflecting longitudinal surfaces, and provide from light of non-uniform intensity entering one end an area of uniform illumination at the other end. The filter, shown in Fig. 1 as of varying physical thickness, is actually of graded density to light, as shown in Fig. 4, and may be made photographically or by metallic deposition. Fig. 2 shows an apparatus in which a filter, as shown in Fig. 4, is mounted adjacent the ends of integrating tubes 35 in a' turntable 25 carried by a plate 23 horizontally adjustable on a frame 20. In the position shown the filter gives the maximum density gradation or gamma across the series of integrating tubes ; rotation of the turntable progressively diminishes the gradation until at 90 degrees to the position shown it becomes zero, and if the centre of rotation 28 is opposite the end of a tube the final density across the whole series is equal to the original density at that tube. By horizontal adjustment of the plate 23 the intensities of the steps may be varied without altering the gradation, allowing film speed measurements to be made from sensitometer strips. Scales 37, 39 may be calibrated in terms of gamma and speed respectively.