baber/WOPTO huggingface dataset:
Patent GB-942508-A (GB)
Title: Improvements in or relating to hydrodynamic vibrators
IPC: B06B1/18
Filed: 1961-07-31
Abstract: 942,508. Vibratory mechanism. E. HALILOVIC, B. RADISIC, and P. MILJKOVIC. July 31, 1961 [Aug. 22, 1960], No. 27753/61. Heading F2X. A vibrator operated by liquid or air pressure comprises a casing 1 having an intake cavity 2 connected to a motor-driven pump, a drainage cavity 4 connected to a reservoir tank or atmosphere, and a cavity 3 containing a freely movable body 7, the cavity 3 being connected to the cavities 2 and 4 by inlet and outlet passages 5, 6 so arranged that the fluid pressure causes the body 7 to move around the cavity 3 and at the same time to rotate about its own axis and to jump into and out of engagement with the cavity wall, the consequent impacts generating vibrations. The body 7 is of circular, elliptical or polygonal cross-section. The cavity 3 has a plurality of passages 5 on one generatrix and of passages 6 on another generatrix, the angle n between the inlets 5 and outlets 6 lying between 60 and 110 degrees. The axis of each inlet 5 is inclined to the tangent at an angle m between 20 and 70 degrees. The fluid pressure, and hence the vibration frequency, may be regulated by a valve between the pump and reservoir. The vibrator may be used for ramming soil, for vibrating concrete, for cutting, breaking, or boring materials, or for physical therapy.
Patent GB-787322-A (GB)
Title: Improvements in or relating to shell-cases and other containers of like shape
IPC: B21D51/54
Filed: 1956-09-12
Abstract: 787,322. Ammunition cartridge cases. FORGES ET ATELIERS DE CONSTRUCTIONS ELECTRIQUES DE JEUMONT. Sept. 12, 1956 [Nov. 22, 1955], No. 27891/56. Class 9(1) A cartridge case comprising a tubular body 1 with an inturned end 1A as in Specification 726,222 connected to a base 2 is joined to the base by placing a ring 3 of hard metal over the inturned end and forcing a deformable washer 5 between the ring and a central boss of the base 2. The base may be of hard steel and its upper surface conforms to the frusto-conical lower surface of the ring 3 so that the washer 5, which may be of soft metal, after deformation assumes a frusto-conical shape. The washer 5 which has spaced notches 6 is placed in position by means of a punch 4, which may be magnetized to support the washer, Fig. 1. An extension 7 guides the punch and enters the percussion cap recess 2B in the base 2, while the ring 5 is positioned by a shoulder 8 of the punch, the shoulder being stopped by the ring 3. To provide against gas leakage a collar 9 may be provided as in Specification 786,627. The lower edge of the collar may be turned in with the end 1A.
Patent GB-285119-A (GB)
Title: Improvements in or relating to extensible draw leaf tables
IPC: A47B17/03
Filed: 1926-11-06
Abstract: 285,119. Nichols, F. A. R. Nov. 6, 1926. Expanding tables combined with desks; table tops.-In an extensible draw-leaf table of the type in which the draw leaves are affixed to tapering slides so that when a leaf is pulled out it gradually rises up until level with the table top, and in which a separate central portion of the draw-leaf constitutes the cover for a case, to be used as a writing-table, directly underlying the draw-leaf, the said cover is hinged to another part of the draw-leaf so that, when fully opened, no part of it projects beyond the side edges of the table top or the draw-leaf, the writing surface being constituted by the floor of the case together with the inner surface of a drop-down front flap. Fig. 1 shows the cover formed in two parts a<1>, a<2>, folding over on to the parts b<1>, b<2>, the writing surface being formed by the parts f, g, while in Fig. 2 the portion a<3> is hinged transversely of the table. The cover may be formed in several pieces, some hinged longitudinally and others transversely of the table. Specification 246,404 is referred to.
Patent GB-697740-A (GB)
Title: Improvements in or relating to alloys for permanent magnets
Inventor: HOSELITZ KURT
IPC: H01F1/04
Filed: 1950-11-16
Abstract: A permanent-magnet alloy has the following composition:-Co 12-14 per cent, Mo 16-18 per cent, Ti 0.3-0.7 per cent, Fe, and impurities, the balance.  The alloy may also contain one or more of the following elements as deoxidizers: Mn up to 1.0 per cent, Si up to 0.2 per cent, Al up to 0.3 per cent, V up to 0.3 per cent and Zr up to 0.2 per cent.  In the preferred method of making the alloys the Fe, Co and Mo are placed in a crucible or melting furnace and melted and Mn is added to about 1.0 per cent of the original charge.  Finally, ferro-titanium is added in amount to cover any probable loss.
Patent GB-913097-A (GB)
Title: Apparatus for weighing out pourable or loose material
IPC: G01G13/00
Filed: 1961-08-02
Abstract: 913,097. Weighing-apparatus. HESSER MASCHINENFABRIK-A.G., FR. Aug. 2, 1961 [Aug. 16, 1960], No. 28011/61. Class 143. Weighing receptacles 3 are held in the forked ends 10 of the arms of a spider 2 mounted on a shaft 25 which is rotated intermittently through Maltese gearing 42, 43 from a drive shaft 41. An approximation to the correct weight of material is delivered to a weighing receptacle 3 at a dispensing station 4 and the next rotational step of the spider takes the receptacle 3 to a weigher. Lugs 8 on the side of the receptacle rest on pins 9 on the fork 10 and to steady the receptacle a lug 11 projects downwards from its bottom and has a slot 12 which a finger 15 enters which is pivoted on a vertical arm 13 and biased by a spring 14 to press the lugs 8 against the pins 9. To lower the weighing receptacle 3 on to the weighing plate 30 the shaft 25 is lowered, at which feet 32 on the receptacle rest on tapered pins 31 on the weighing plate and a pin 33 raises the finger 15 so that the spring 14 does not press down the weighing receptacle, while the lugs 8 are lifted clear of the pins 9. The raising and lowering of the shaft 25 are accomplished by a cam 40 which rotates with the drive shaft 41 and acts on a roller 39 on a lever 37 which engages a sleeve 35 on the shaft 25. The weigher controls a make-up device 6 which adds the correct amount of material to make up the correct weight at the next station. After this station, a level gear 18 on the end of a spindle 17, to which the fork 10 is secured and which passes through a bearing 16 on the spider 2, engages a toothed segment 19, subtending an angle of 180 degrees, and as the spider completes its movement to the next station the receptacle 3 is tilted so that it discharges its contents at the next station. A device comprising a disc 20, roller 23 and spring-biased lever 22 ensures the engagement of the bevel gear 18 and the segment 19.
Patent GB-1119843-A (GB)
Title: Process and apparatus for converting waste tungsten into ammonium tungstate solution or crystalline ammonium paratungstate by means of electrolysis
IPC: C01G41/00
Filed: 1965-07-01
Abstract: <PICT:1119843/C6-C7/1> Scrap tungsten is subjected to anodic dissolution in an aqueous solution of ammonia containing at least 10 g/1 of free ammonium hydroxid at a current density of 5 to 20 amps/1 until a concentration of 200 to 300 g/1 of ammonium tungstate is obtained.  Part, e.g. 60 to 70% by volume, of the ammonium tungstate solution may be removed and evaporated to obtain ammonium paratungstate crystals.  The free ammonium hydroxide concentration may be adjusted by introducing either concentrated solution or preferably gaseous ammonia. To increase the conductivity of the electrolyte there may be added tungstic acid, ammonium chloride, nitrate or carbonate, or carbon dioxide may be bubbled into the bath. To depassivate the anode surface hydrogen peroxide may be added to the bath to oxidize impurities in the scrap, metal impurities including molybdenum, being cathodically deposited together with some tungsten. Typically the process is performed in a closed cell having an inlet tube 6 for ammonia gas or solution, a suction tube 7 for the removal of electrolytically released hydrogen and ammonia, a thermometer and anode baskets 2 for the tungsten scrap, e.g. as balls of scrap wire, formed of tubes 8 through which a cooling liquid is passed to maintain a bath temperature of 40 to 50 DEG C. 80 to 95% of the anode basket surface may be coated with an insulating material to protect it from erosion.  Preferably the anode baskets and the cathodes 3 arranged on both flanks of each basket are made of metal resistant to ammonia.  In an alternative arrangement both cathode and anode are in the form of baskets containing scrap tungsten and the polarity is reversed every third to fifth minute.
Patent GB-780434-A (GB)
Title: Improvements in or relating to rotors of turbines and compressors
Inventor: LOMBARD ADRIAN ALBERT
IPC: F16D1/06
Filed: 1954-09-28
Abstract: 780,434. Turbine and compressor rotors. ROLLS-ROYCE, Ltd. Aug. 22, 1955 [Sept. 28, 1954], No. 28027/54. Class 110 (3). [Also in Group XXIV] In a turbine or compressor rotor comprising a plurality of blade discs in splined connection with a shaft portion of uniform diameter, the sets of splines are formed to permit axial sliding of a disc over at least one set of shaft splines and thereafter interference fit with another set of splines. Blade discs 13a, 13b, 13c of the type described in Specification 715,044 are in splined connection 18a, 11a, 18b, 11b, 18c, 11c, with the shaft 10, these sets of splines being of interference fit. To permit assembly alternate splines 11b are omitted and the corresponding spaces between alternate splines 18b are enlarged so that disc 13b can be slid easily over splines 11a, rotated one spline pitch and engage with interference with splines 11b. In a modification, two splines are omitted from the shaft and one from the disc, and in further modifications the splines are omitted from the disc and the spaces increased on the shaft. Specification 621,545 also is referred to in the Provisional Specification.
Patent GB-379890-A (GB)
Title: Improvements in catches for gate latches or the like
IPC: E05B63/24
Filed: 1931-10-09
Abstract: 379,890. Lift latches. DAVY, W. H. and DAVY, W. K., Wooton, Seafield Road, Southbourne, Hampshire. Oct. 9, 1931, No. 28051. [Class 44.] A catch for a lift latch consists of a pivoted member 5 supported between cheeks 2 of a bracket 1. The latch is received by a recess 3. Specifications 9470/01, 9679/03, [both in Class 44, Fastenings, Lock &c.], and 342,182 are referred to.
Patent GB-1510182-A (GB)
Title: Rail vehicles
IPC: B61F5/02
Filed: 1975-07-03
Abstract: 1510182 Railway vehicle undercarriages CREUSOT-LOIRE 3 July 1975 [4 July 1974 19 June 1975] 28075/75 Heading B7L A rail vehicle bogie comprises a cross member 6 for receiving the weight of a vehicle body 16 at each end thereof, the member 6 being articulated on a pivot pin 5 carried by a bogie bolster 1, and resilient blocks 30 interposed between the ends of the cross member 6 and the bolster 1. The pivot 5 includes axially spaced opposed radially extending surfaces 10, 11 arranged with spacing above and below the cross member 6 to permit limited movement of the cross member axially of the pivot. The vertical flexibility of the blocks 30 is such that most of the vertical loading on the member 6 is transmitted through the blocks 30 rather than through the pin 5. The member 6 is retained on the pin 5 by a ring 12 and nut 13 which apply a slight prestressing to blocks 30 prior to the loading by the vehicle body, which bears on flat upper surfaces of respective support members 40 of which parts 41 each have a convex surface engaged on a wearing member 22 at one end of the member 6. A plastics ring 8 is interposed between the member 6 and pin 5 which also carry annular rubbing plates 9 and 10 respectively, the plates 9 and 10 not normally contacting one another owing to the load supporting function of the blocks 30. A more complex form of the support members 40 including articulated angle members (20), Figs. 1-3 (not shown), is also described. The invention is also applicable to a bogie comprising two elementary bogies coupled together by two longitudinal equalizer members, the vehicle body being supported at the midlengths of the equalizer members and the ends of the equalizer members being supported on the bogie bolsters by cross members 6 as above, Figs. 5 and 6 (not shown).
Patent GB-1371964-A (GB)
Title: Audio reproduction apparatus
IPC: G11B20/14
Filed: 1972-06-16
Abstract: 1371964 Data storage and retrieval WESTINGHOUSE ELECTRIC CORP 16 June 1972 [30 July 1971] 28244/72 Heading G4H In a system for data recording and retrieval on audio media (e.g. a tape recorder), each data signal consists of a subaudible (40 Hz) tone followed by binary data in the form of widthmodulated 3kHz tone bursts separated by 2 kHz tone bursts (Fig. 5). Data is recorded on a tape recorder B by the apparatus of Fig. 2, wherein the binary values are entered on switches 1, and a switch 2 is pressed to set a bi-stable 3 (which enables a gate 21 via a latch 22) and trigger a monostable 4, whereby a multiplexer 5 accepts the output of a zero crossing detector 7 connected to a 40 Hz oscillator 8. While 4 outputs a "1", the output from 7 ensures that latch 22 enables gate 21 and that a latch 6 outputs a signal to cause a multiplexer 9 to pass the 40 Hz tone to recorder B. When the output from 4 reverts to "0", multiplexer 5 feeds the output from a 2-3 kHz zero crossing detector 20 to latch 22 and the output from 6 changes to cause multiplexer 9 to accept 2 kHz signals from an oscillator 14. The output change from 6 also triggers a monostable 10 which starts a twoperiod clock 11 when its output reverts from "1" to "0": when the clock starts, its "1" output causes a latch 16 to change to "1", whereby a capacitor C4, Fig. 4 (not shown), is switched into an R.C. circuit in 14 to change its frequency to 3 kHz (when its output becomes "0" again (C4) is removed and the output from 14 changes to 2 kHz again). A 90 degree phase shift and zero cross detector 15 controls latch 16 to ensure smooth 2-3 kHz transitions. The clock period (i.e. duration of its "1" outputs) is determined by a multiplexer 13 which scans switches 1 and switches a resistor R1 into and out of the clock circuit: the period is 8 or 16 msec. according as 13 detects a "0" or a "1" at the switches. At the end of the data (determined by a counter 12 and comparator 18) a monostable 19 is triggered: 14 supplies a 2 kHz "end" signal until 19 turns off and resets bi-stable 3. The tape B is read by a tone code reader (Fig. 6, not shown) wherein detection of the 40 Hz signal disconnects a listener speaker from the recorder while the 2/3 kHz tone bursts are being filtered and rectified: these latter are fed to a comparator (60) whose output (1=2 kHz, 0= 3 kHz) provides clock signals for a shift register (63). A 3 kHz time comparator (61) determines the binary nature of each bit which is stored in (63), and a 2 kHz time comparator (65) detects the "end" signal to terminate the retrieval process.
Patent GB-951223-A (GB)
Title: Improvements in or relating to driving and supporting means for rotatable spindles
Inventor: GILCHRIST REGINALD SELBY
IPC: D01H1/243
Filed: 1961-08-03
Abstract: 951,223. Bearings. KLINGER MANUFACTURING CO. Ltd. Sept. 6, 1962 [Aug. 3, 1961], No. 28320/61. Heading F2A. [Also in Division D1] A spindle e.g. a false twisting tube (see Division D1), is supported in " floating " manner and frictionally driven by engagement of a shank 10 and a groove 15 with the resilient rims of overlapping driving and idler wheels 33 and 35, 14, the latter rotatably mounted on a pivotable arm 30 and urged by a spring 31 towards the spindle. The groove is flanked by flanges 20, 21, with diverging conical faces 22, 23, its cylindrical surface 24 is slightly e.g. 30 thousandths of an inch, longer than the cylindrical periphery 25 of wheel 14, and the angular clearance 28 between face 23 and chamfer 27 on wheel 14 is about 10 degrees. The wheels may be formed from polyurethane rubber.
Patent GB-731810-A (GB)
Title: Improvements in or relating to the cutting of helical grooves
IPC: B23G1/02
Filed: 1951-12-03
Abstract: 731,810. Screw-cutting lathes. MOTOR GEAR & ENGINEER. ING CO., Ltd., and HAMMETT, E. S.. March 3, 1953 [Dec. 3, 1951], No. 28330/51. Class 83 (3). Hollow cutter-heads.-In a method of cutting a helical groove a workpiece is rotated and a head with an inwardlydirected cutting tool thereon is rotated around it about an axis offset from the work axis, the tool and. work being given relative traverse in the axial direction of the work at the rate for the helix to be cut and the axis of rotation of the tool being at or substantially at the angle of helix to the axis of rotation of the work. An embodiment suitable for use in conjunction with a screw-cutting lathe comprises a cross slide 10 having an upstanding bracket 11 with a vertically adjustable bearing block 13. Rotatable on ball bearings 14, Fig. 2, within the block is a sleeve 15 having, on one end face, clamping means 16 for a pair of diametrically opposed inwardly directed cutting tools 17. On the other end of the sleeve is a pulley 19 for driving the tool head by V-belts and an electric motor 21 at a speed of between 2000 and 4000 revolutions per minute. The bracket is also rotatable about a vertical axis 23 passing through the centre 24 of rotation of the tools and perpendicular to the axis of rotation 25 thereof. Alternatively, this bracket may be adjustable about a horizontal axis at right angles to that of the work. Multi-start threads may be cut by staggering the tools.
Patent GB-665271-A (GB)
Title: Linear polymers and process of preparing the same
IPC: C08G63/688
Filed: 1948-11-03
Abstract: The improvement in the process claimed in the parent application for the production of polythioesters by interaction of a dicarboxylic acid chloride, a glycol and a dimercaptan consists in carrying out the reaction specifically with tetramethylene glycol and terephthaloyl chloride.  Suitable dimercaptans exemplified are tetramethylene, decamethylene, hexamethylene and pentamethylene dimercaptans.  In Example 1.30 parts terephthaloyl chloride, 12.15 parts tetramethylene glycol and 1.819 parts tetramethylene dimercaptan were charged into a glass vessel equipped with stirrer and glass inlet tube immersed in the molten contents.  The vessel was heated to 109 DEG  C. to melt the acid chloride and the temperature was then raised to 255 DEG  C. and maintained for 2 hours.  The polymer obtained had a viscosity of 1250 poises at 255 DEG  C. and a melting point of 225 DEG  C.  Fibres prepared from the polymer were given a drafting treatment and then had a tenacity of 5.4 gs. per denier and an elongation of 8.9 per cent at breaking point.  The fibres may be stretched in two stages, the first at room temperatures and the second at 130-190 DEG  C.  The reaction may be effected in the presence of inert diluents, e.gcarbon tetrachloride chlorbenzene, xylene, naphthalene or aliphatic hydrocarbons.
Patent GB-1143412-A (GB)
Title: Improvements in or relating to electric circuit selectors
IPC: H01R29/00
Filed: 1965-07-06
Abstract: 1,143,412. Plugboards. SEALECTRO Ltd., and S. T. DEAKIN. 1 July, 1966 [6 July, 1965], No. 28621/65. Heading H2E. At each cross-over point of perpendicular arrays of contact strips 14, 20 in a cross-bar distributer, a plug 10 projecting from a strip 14 lies within a socket 11 of a strip 20. Each strip 14 is retained in a channel-shaped resilient insulating bar 12 by shoulders 16, and the strips 20 are in the shape of waves whose troughs are retained around the bases of the bars 12 by inter-engaging recesses 21 and projections 22. In a modification, the sockets 11 are hemicylindrical and apertures in the strips 20 engage the projections 22. The bars 12 may be bolted together or held in a frame. The pairs of contacts 10, 11 are selectively linked by connectors, Fig. 7, each comprising an inner socket 46 and an outer resilient plug 49, linked by a diode 59 and respectively retained on an insulating sleeve 40 by a groove, which engages a rib 44 on the sleeve, and by hooks 52, 53, the sleeve 40 being screwed into a rear sleeve. An alternative form of linking connector (Fig. 5, not shown) comprises a split tubular contact (30) with a rear insulating sleeve (31) and having two pairs of opposed tongues (34, 35), respectively inwardly and outwardly biased for grippin a plug 10 and for engaging in a socket 11.
Patent GB-501156-A (GB)
Title: Improvements relating to warning signals for diesel or electrically driven vehicles
IPC: G08B3/06
Filed: 1937-10-21
Abstract: 501,156. Combined valves and electric switches. DESIDERIO, C. V. V. Oct. 21, 1937, No. 28720. [Class 135] [Also in Group XXX] In a device for giving an audible warning of approach, for example on a Diesel or electrically -operated railcar, a single handle 2 is provided operating both an air valve 3 and a switch 5 controlling respectively compressed air and electrically-operated hooters, and a changeover means may be set to determine which hooter shall sound when the handle is operated. The handle 2 controls four hooters, of which the two hooters operated from the same source may have different notes. Depression of the handle to one side or the other opens one valve 3 and closes a switch 5, the hooter which then operates depending on the position of the handle 22 of the valve 12. As shown, only the air-operated hooter would operate, but if the handle 22 is rotated to close valve 12, the lever 18 is depressed closing switch 13. It may be arranged that the switch 13 and valve 12 may be closed and open respectively when the handle 22 is in the intermediate position, so that both hooters are operative.
Patent GB-1496137-A (GB)
Title: Welding plastics workpieces
IPC: B29C65/08
Filed: 1975-06-25
Abstract: 1496137 Seaming non-metallic sheet material KERRY ULTRASONICS Ltd 25 June 1975 [28 June 1974] 28729/74 Heading B5K In a method of welding plastics workpieces together by the application of ultrasonic vibrational energy by an ultrasonic transducer having a working face 21 which engages one of the workpieces, the amplitude of vibration of the working face 21 is monitored by detector means 22 providing an output signal proportional to this amplitude, the output signal is compared with an experimentally determined reference signal and the application of ultrasonic energy to the workpieces is interrupted when the difference between the output signal and the reference signal attains a pre-selected datum value. As shown in Fig. 1, the ultrasonic transducer comprises a pair of piezoelectric elements 10, 12 sandwiched between metallic bodies 14, 16 and having an operating alternating voltage applied thereto at terminals 13. A tapered horn 18 is secured to the body 16 and has a working face 21. The detector means 22 comprises a strain-sensitive pick-up, e.g. a secondary piezoelectric transducer, cemented to the horn 18 near the point of maximum stress. The output voltage V 1  generated by the transducer 22 when the apparatus is in use is available at terminals 19. A voltage comparator, Fig. 2 (not shown), compares the voltage V 1  with a preset reference voltage V 0  and the output (V 0 -V 1 ) is used to switch a transistor in the circuit of a relay having a pair of contacts connected between the terminals 13 and the power supply therefor. When (V 0 -V 1 ) becomes positive the transistor is rendered non-conducting so as to cause normally open contacts of the relay to open to cut off the power supply to the transducer. A time delay circuit prevents the relay dropping out inadvertently as a result of spurious brief signals. In modifications (not shown), the detector means 22 comprises an accelerometer or a displacement monitor or the ultrasonic transducer itself is included in a motional circuit attached to its terminals and capable of providing an output signal proportional to the transducer motion. The transducer is driven under either constant-current or constant-voltage conditions. It is necessary to calibrate the apparatus to establish the value of the reference signal applicable to any particular welding operation. Preferably, the apparatus is arranged so that power is not supplied to the ultrasonic transducer until the working face 21 is in pressure engagement with the workpieces.