baber/WOPTO huggingface dataset:
Patent GB-1347505-A (GB)
Title: Regenerating coupling systems
IPC: H03K5/003
Filed: 1971-05-14
Abstract: 1347505 Zero level correction MITSUBISHI DENKI KK 14 May 1971 [19 May 1970] 15098/71 Heading H3T D.C. level stabilization at the output side of a coupling capacitor C1 is effected by means of a current source which provides zero net current at the desired output level, which for small voltage changes produces a large change of current and which for large voltage changes produces minimal current. Thus for slow and small changes at the input the capacitor will quickly change its charge but for larger changes the capacitor will hold its charge. As described, input pulses, for transmission to a crest level detector, pass without distortion as will high frequency noise but slow base line changes will not pass and the zero level will thus be stabilized. The current source shown comprises a negative resistance formed by a positive feedback amplifier Q 1 , Q 2  having the characteristic ICQ2 (Fig. 5), and a positive resistance formed by the negative feedback amplifier Q 3 , Q 4  so that the combined characteristic (#1) at the output terminal of the capacitor has a low voltage positive resistance region passing through zero, flanked by negative resistance regions increasing the resistance to substantially infinity. For slow or small input voltage changes the positive resistance region allows the capacitor to charge but for larger changes substantially no charge current flows. At the zero level a current i flows through Q 4  to Q 2  leaving none to flow to the capacitor. An alternative circuit replaces the positive resistance Q 3 , Q 4  by a two-diode circuit arranged to provide a current i at the zero level. Resistor R in the circuits is chosen to make the combined resistance positive, and R 1  may be replaced by anti-parallel diodes. The Specification also describes a prior circuit in which the zero level is controlled by a CR circuit in a feedback path arranged to average the positive and negative peak values (Fig. 3, not shown). A futher prior circuit (Fig. 2, not shown) comprises a feedback amplifier with diodes in the feedback path to restore the zero level.
Patent GB-348882-A (GB)
IPC: E02F3/348
Filed: 1930-05-16
Abstract: 348,882. Mechanical shovels. BAMAG-MEGUIN AKT.-GES., 10, Reuchlinstrasse, Berlin. May 16, 1930, No. 15128. Convention date, May 29, 1929. [Class 68 (i).] A mechanical shovel for feeding material to a belt &c. conveyer is pivotallv mounted on linkage and reciprocated by an arm, the shovel being pushed into the material and then withdrawn up an inclined or curved guide and discharges on to the conveyer. A U-shaped shovelCis mounted ona a pivot b<1> on the end of a lever b connected by a link e to a fixed pivot f. A rod a is pivotally connected to the lever b and is reciprocated by suitable means. In the forward stroke an arm i on the lever presses against a stop ,g on the shovel and pushes it into the heap of material m. On the rearward stroke the shovel tilts over on its pivot and drags the material up an inclined guide d until the shovel rests on lateral arms r, Fig. 3, at the top of the guide, the material filling on to the conveyer k. At the commencement of the next forward stroke, the shovel catches against the end h of the guide and tilts over into position for entering the heap of material.
Patent GB-569227-A (GB)
Title: Improvements in or relating to diamond tools
IPC: B24B53/12
Filed: 1943-09-15
Abstract: 569,227. Diamond-tools. WHEEL TRUEING TOOL CO. OF DELAWARE. Sept. 15, 1943, No. 15129. Convention date, Oct. 26, 1942. [Classes 60 and 124] A diamond cutting or trueing tool comprises a thin triangular macle diamond 20 partially embedded in a shank 21 to present a cutting point or edge defined by one apex 20e of the fused plane 20c of the diamond. The latter should not exceed .05 inch in thickness, and the apex 20e should have a natural or formed radius of .001 to 01 inch and an included angle not exceeding 55 degrees, whilst the angles of the end of the shank should not be substantially greater than those of the diamond. The diamonds used range in size from .02 to .25 carats. The fused plane 20c preferably coincides with the axial plane of the shank which may be cylindrical with a flat face 21a parallel to the fused plane 20c and engaged -by a setscrew on the shank holder to secure the diamond in its correct position, i.e. with the fused plane normal to the axis of a grinding wheel being trued and in the plane of rotation of the wheel.
Patent GB-1023798-A (GB)
Title: New 4-halogen-androstenes
IPC: A61K31/568
Filed: 1964-04-13
Abstract: The invention comprises steroids of the formula <FORM:1023798/C2/1> wherein Hal is fluorine, chlorine or bromine, R1 is hydrogen or an aliphatic hydrocarbon group of at most 4 carbon atoms, and R2 is hydrogen or an acyl group of 1 to 18 carbon atoms. They may be prepared by epoxidizing corresponding 4-unsubstituted D 4-steroids and reacting the 4,5-epoxides formed with a hydrogen halide or a hydrogen halide donor; or by directly halogenating the 4-unsubstituted D 4-steroids to give the required products via the not-isolated 4,5-dihalo intermediates; or by halogenating enamines of the D 4 compounds, followed by isomerization of the D 5-4-halogeno compounds. A 17b -hydroxyl group in resulting compounds (including epoxide intermediates) may be esterified.  Examples are given.  The 7a -methyl-androstenes of the invention, which are stated to be anabolics, may be made up into pharmaceutical compositions with suitable carriers.  These may take the form of tablets, dragees, capsules, solutions, suspensions, emulsions, ointments or creams, and may contain preserving, stabilizing, wetting or emulsifying agents, salts for regulating the osmotic pressure, or buffers.
Patent GB-705355-A (GB)
Title: Improvements in building door and window frames into walls and in door and window frames
IPC: E06B1/56
Filed: 1952-06-17
Abstract: 705,355. Door and window frames. RUMBLE, R. W. June 17, 1952 [June 23, 1951], No. 15220/52. Class 20 (3) The tendency of walls to crack at the angles of openings provided for rectangular door and window frames is minimized by shielding the sharp outer corners of the frame by a structure presenting an outer convex surface and building or casting the wall material up to this surface. In the metal frame shown in the Figure, the sharp corners 3 are shielded for this purpose by bent strips 6 which may be welded to the frame members 4 and 5 or built into position during the construction of the wall.
Patent GB-1413803-A (GB)
Title: Blood pumping
IPC: A61M60/851
Filed: 1972-08-16
Abstract: 1413803 Valves BENTLEY LABORATORIES Inc 16 Aug 1972 [16 Aug 1971] 15256/75 Divided out of 1413801 Heading F2V Inlet and outlet valve assemblies for an extra corporeal blood pump each comprise a lip valve- 103, 108, e.g. moulded from silicon rubber, the valve being provided with a slit by cutting first in an axial direction, and then intersecting the first cut by a transverse cut, thereby forming clean, sharp edges on the valving surfaces 152. The inlet and outlet fittings 100, 110 and the valves are of substantially constant flow crosssectional area, one transverse dimension of the valves being several times greater than the other. The fittings 100, 110, e.g. of polycarbonate, each comprise a cylindrical portion 115 and a tapered portion 118, and are clamped to a pumping chamber tube 105 by metal clamps 135, 136 and 172, 173.
Patent GB-377151-A (GB)
Title: Improvements in and relating to hot beds for rolling mills
IPC: B21B43/02
Filed: 1931-09-25
Abstract: 377,151. Rolling. JENSEN, C. A., 77, Chancery Lane, London.-(Birdsboro Steel Foundry & Machine Co. ; Birdsboro, Pennsylvania, U.S.A.) Sept. 25, 1931, No. 15306/32. Drawings to Specification. [Class 83 (iv).] Roller tables.-A hot bed for a rolling mill includes a roller conveyer which receives the hot bars until a series of plates spaced between the rollers rise up to lift the bars clear of the rollers, whereon a kick-off bar operates to push the bars on to the cooling bed. The mechanism is as described in Specification 377,015.
Patent GB-1352382-A (GB)
Title: Electron beam generator
IPC: H01J33/00
Filed: 1971-05-18
Abstract: 1352382 Electron beam apparatus MATSUSHITA ELECTRIC INDUSTRIAL CO Ltd 18 May 1971 [19 May 1970] 15500/71 Heading H1D A non-scanning and non-focusing type electron accelerator for producing a beam of electrons comprises a plurality of cylindrical accelerating electrodes and a coaxial longitudinally shaped cathode, the accelerating electrodes being each closed by its own electrode end wall at one end only and including aligned apertures for beam emission. The accelerating electrodes include cylindrical grid 32, at least one cylindrical electrode 33 and cylindrical anode 34. Each electrode has apertures (35a-35d) Fig. 5 (not shown) for electron beam passage, anode 34 operates as evacuated vessel, and irradiation window 35 and resistor dividers 40 are provided. Electrode support may be by annular glass insulators 36, hermetic sealing being by epoxy resin adhesive for example. Fig. 6 includes accelerating voltage source 37, cathode heating source 38, grid voltage source 39, dividing resistors 40, and vacuum pump 41. The longitudinal cathode may be line, strip-shaped, coil-shaped, or composite cathode of strip-shaped and coil shaped cathodes. Cathode and other dimensions, voltages and currents are exemplified. Reference is made to electron accelerators of Cockcroft type, Vander Graaf and resonating transformer type, and also irradiation of electrons on to polymer materials to improve their characteristics and prior art devices as in Figs. 1 to 4 including Al or Ti thin metal irradiation window (1).
Patent GB-433337-A (GB)
Title: Improvements in and relating to the blind arms for awning blinds for casement-windows
IPC: E04F10/06
Filed: 1934-05-25
Abstract: 433,337. Awning blinds. DEVERELL, D. G., 77, Upsdell Avenue, Palmers Green, London. May 25, 1934, No. 15632. [Class 52 (v)] An awning blind for casement windows is supported by side arms 5 each pivoted at 14 to a radius rod 12, near the middle 15 of which is pivoted a guide rod 10. The parts 5, 10 are pivoted to slides 7, 9 on guide rods 8, and their ends are connected by the blind batten 4 and a crossbar 11 which serves, when the blind is unrolled, to lift the upper part of the blind free of the opened doors, casement windows and like fittings which may be beneath it. The blind rolls up into a box 1, the front of which is closed by the batten 4.
Patent GB-1088031-A (GB)
Title: Aircraft retractable wheel mountings
Inventor: NICHOLL EDWARD JAMES
IPC: B64C25/14
Filed: 1964-04-15
Abstract: 1,088,031. Aircraft undercarriages. DOWTY ROTOL Ltd. April 2, 1965 [April 15, 1964; Sept. 26, 1964], Nos. 15646/64 and 39322/64. Heading B7G. A retractable undercarriage for aircraft comprises a lever 11 mounted at one end on a fixed pivot 12 and provided at its other end with pivots 14 and 16 for landing wheel(s) and the cylinder 17 of a shock absorber. The pistonrod of the shock absorber carries a pivot pin 19 which supports a swan-neck shaped link 21 and also, when the undercarriage is extended seats with a fixed socket to which it is locked by a locking lever 24. Lever 21 is mounted on a fixed pivot 22 and extended by an arm 26 connected at its extremity to a retraction jack 28. Initial movement of the jack 28 operates, through lost motion mechanism and a rod 34, upon a mechanism 25 to swing lever 24 clear of pivot 19. Subsequent movement of the jack operates through lever 21 upon the head of the shock absorber to retract the undercarriage to the position indicated by dotted lines in Fig. 1 in which it is retained by an uplock 37. In a further embodiment lever 21 may be dispensed with, the pin 19 being guided in its movement during retraction by a fixed cam plate, a tension spring between the shock absorber and pivoted lever holding the pin 19 in contact with the cam surface, or the pin 19 may travel in a cam slot. Retraction is effected by a jack acting on lever 11.
Patent GB-156810-A (GB)
Abstract: 156,810. Woosnam, A., (Ambrosini, A.). Jan. 5, 1916. Side-cars and trailers.-A trailer or side-car for use with motor and other cycles and like tractive vehicles that are unstable when stationary, comprises a single road wheel, a frame arranged in the same plane, and a member for connecting the trailer or side-car to the tractive vehicle in such a way that it can turn in horizontal and vertical directions. As shown in Fig. 1, a trailer comprising a wheel 1 and frame 3 with a saddle 10 and handle bars 11 is connected at 13 to a motorcycle. The connecting-device comprises a horizontal pivot O<0>, Fig. 3, and a detachable vertical pivot V, V<0> which allow the trailer to turn in vertical and horizontal directions respectively. For use as a sidecar, the wheeled carrier may be placed at the side of the tractive vehicle by attaching the connection to the forepart thereof. A number of trailers may be coupled together one behind another.
Patent GB-457660-A (GB)
Title: Improvements in or relating to steering gear of vehicles
IPC: B62D1/18
Filed: 1935-05-30
Abstract: 457,660. Motor-vehicle steering-gear. BLUEMEL BROS., Ltd., Wolston, near Coventry, and BLUEMEL, F. W., Cannon Hill, Kenilworth Road, Coventry, Warwickshire. May 30, 1935, No. 15712. [Class 79 (v)] In order to provide for axial adj ustment of the steering hand wheel, the upper end of the steering shaft 10 above a bearing 12 is provided with a tubular portion or member 14 into which a short shaft 19 on the steering wheel 17 slides I locking means being provided for securing the wheel in any desired position. The part 14 may be integral with the shaft 10, but in the construction shown is formed as a separate member splined on the shaft 10 and secured thereto by a pin 16. The member 14 is also splined on the wheel shaft 19 and is split at 23, being clamped on the shaft 19 by a bolt 24 and cam lever 25, 26 as described in Specification 417,418, so that the shaft 19 can be readily released for adjustment by moving the lever 25 to the position shown in broken lines in Fig. 2. The shaft 19 is hidden from view by a telescopic spring coil or sheath 29, or two telescoping tubes may be used. The axial movement of the wheel shaft in the member 14 is limited by a screw 21 engaging a slot 22 in the shaft. The steering shaft 10 is enclosed in the usual stationary column 11. The member 14 may be split also at its lower end which would then be clamped on the shaft 10 by a bolt.
Patent GB-856368-A (GB)
Title: Improvements in metal bending machines
IPC: B21D5/14
Filed: 1958-05-16
Abstract: 856,368. Curving; corrugating. VERTIMAX Ltd., and ANDERSON, J. May 13, 1959 [May 16, 1958], No. 15808/58. Class 83 (4). A metal-bending machine comprises an upper roller and a pair of lower rollers all supported at their ends by standards, each standard being formed of inner and outer end-plates with interconnecting front and rear plates, said standards being interconnected near the foot thereof by a housing in which is located the motor and reversible gearing which transmits the drive to the lower rollers through a sprocket wheel and chain drive or other gearing housed in one of the standards. Standards 11, each comprising inner and outer steel plates 12, 13, interconnected by front and rear plates, are mounted on a base 10 and a housing 14 extending between them encloses a motor 16 and a variable-speed reversible hydraulic transmission unit 17, controlled by levers 21 or 22, fast on a transverse shaft 23, outside and adjacent the standards 11. A driving shaft 18 of the unit 17 extends into one of the standards 11 and drives through a sprocket 20, chain 40, jockeypulley 40a, all within the standard 11, a sprocket 39 fast on a shaft 32 extending across the machine. The shaft 32 drives, through gearing 35, Fig. 4 (not shown), 37 and 36, two rollers 33, 34, the shaft 32 and rollers 33, 34 being supported at each end in bearings carried by a housing 27 bolted to the inner plate 12 of each standard 11. Housings 43, pivoted at 42 to the tops of the standards 11, have semi-circular bearing faces 48 arranged to fit over roller races 47 of each end of a top roller 44. Spring- biased pins 55 in the housings 43 fit into axial bores in the ends of the roller 44. To indicate the position of the roller 44 relative to the rollers 33, 34, a pointer 57 is pivoted on each housing to register with a scale 58 thereon and has a toe 59 biased by a spring 61 against one face of a recess 60 in the standard 11. When a plate is bent to cylindrical form, one housing 43 is swung away from the end of the roller 44 to allow the bent plate to be withdrawn. The rollers may be replaced by corrugating rollers.
Patent GB-698513-A (GB)
Title: Improvements in automatic feeding devices for wrapping machines
Inventor: ROSE ALFRED GERMAN
IPC: B65B37/04
Filed: 1951-07-04
Abstract: 698,513. Automatic weight control systems. ROSE BROS. (GAINSBOROUGH), Ltd. June 12, 1952 [Julv 4, 1951], No. 15811/51. Class 38 (iv). [Also in Group XVIII] Articles, e.g. sweets are fed to a wrapping machine by an intermediate vibratory platform 14 fed from a main feed hopper 12 and balanced about a pivot 19 against the action of a spring 27 so as to be tiltable under the weight of the feed to operate a micro switch 26 or rheostat retroactively controlling the average rate of feed by the main feed hopper 12 so as to render the rate of feed by the weigh platform 14 constant. The rate of feed by the hopper 12, operated e.g. also be an electromagnetic vibrator 36, is made slightly in excess of that required by the wrapping machine and the switch 26 or rheostat operates by occasionally stopping or by reducing the amplitude of vibration of the hopper 12. The forward slope of the platform 14 is limited by an adjustable abutment 23 and the spring 27 is made adjustable to varv the value of the constant rate of feed. The articles are fed into individual pockets of a rotary feed wheel 18 of the wrapping machine. A rotary brush 31 sweeps off any surplus articles into a container 34.
Patent GB-809540-A (GB)
Title: Improvements in or relating to casting
IPC: B22D11/14
Filed: 1955-06-02
Abstract: 809,540. Induction heating of metals. BRENNAN, J. B. June 2, 1955, No. 15826/55. Class 39(3) [Also in Groups II and XXII] A method of casting in which molten metal is directed to a crucible 9, which is cooled so that a skull of metal 15 is formed and remains between a body of molten metal and the walls of the receptacle, consists in withdrawing molten metal to a casting zone from the body of molten metal only. The receptacle or copper crucible 9 is contained in a chamber 1 which may be evacuated or supplied with an inert gas through a line 3. The crucible is supplied from a metal rod 7 which is formed from 200 mesh metal powder e.g. of titanium fed past high frequency heating coils 39 which form a skin on, or sinter, or melt the powder. The surface of the rod is melted at its lower end by a high frequency coil 8. The metal passes to the crucible 9 and a passage 11, such as a copper die, both cooled by liquid in circulation. The metal in the crucible, except for the cooled skull 15 on the sides, is heated by parabolic coated graphite reflectors 16 heated by high frequency coils 18. These reflectors may also heat the rod 7 and the coils 8 be omitted. Alternatively, the coil 8 may so heat the metal that the reflectors 16 can be omitted. To ensure uniform heating the crucible is rotated by a gear 21 and the reflectors 16 may be oscillated or rotated. Alternatively, the reflectors 16 may be replaced by a single annular reflector. The solidified metal is withdrawn by fluid-cooled roolers 19 through a chamber 23 having a vacuum or gas connection 24. To avoid surface irregularities on the casting, the surface is fused by a coil 41 before being passed by the rollers 19 to a crucible 42 heated by a coil 43. In a modified apparatus, slugs of metal may be fed to a thorium oxide or zirconium oxide crucible 58, Fig. 3, heated by a high frequency coil 59, and the molten metal then passes to the crucible 9. The coil 59 consists of a copper tube disposed within a glass tube, cooling water being circulated within and around the inner tube. In further modifications, the heating may be by resistance filaments or by infra-red ray apparatus and may be concentrated on an annular portion of the metal pool. An argon atmosphere may be used; and chromium, cobalt or molybdenum may be melted.
Patent GB-699315-A (GB)
Title: A new or improved electronic timing circuit
IPC: B23K11/24
Filed: 1951-07-04
Abstract: 699,315. Thermionic valve control. BATES, C. R., and BATES, M. E. July 3, 1952 [July 4, 1951], No. 15831/51. Class 38 (iv). A circuit for timing the conductivity of a leading valve a of a back-to-back pair controlling the supply to a resistance-welding transformer, comprises a potential divider R1-R4 fed from a D.C. source and from which is derived negative grid-bias for the valve sufficient to render ineffective a periodic " turn-on " voltage applied by a peaking transformer T1. Operation of switch 81 from the position shown connects a condenser C1 (previously discharged by R6) and resistor R5 across the divider elements R1, R2, thereby temporarily reducing the grid bias whilst C1 is charging and allowing the valve to conduct under the control of T1 until the bias builds up to a value sufficient to nullify the " turn-on " voltage. A biased rectifier D, controlled by R<SP>1</SP> (which may be ganged with R4, adjustably limits the value of the " turn-on " voltage. A second peaking transformer T2 provided with a time-controlled short-circuiting switch S2 may be provided in series with T1 to allow the intensity of current passed by the valve to be varied in two stages during the timing period.
Patent GB-559439-A (GB)
Title: Improvements in steam and other vapour generators
IPC: F22B35/10
Filed: 1942-11-11
Abstract: 559,439. Controlling furnace combustion. FOSTER WHEELER, Ltd. Nov. 11, 1942, No. 15932. Convention date, Nov. 12, 1941. [Class 51 (i)] [Also in Group XIII] Water is forced through the tubes 59, Fig. 1, of a return-circulation forced flow boiler by a rotary pump 48, Fig. 3, at the .bottom of a steamseparating and water collecting chamber 22 and driven by a turbine 80, Fig. 2, operated by the steam flowing from a separator 72 through a pipe 82 to a superheater 62. At starting, the rotary pump is driven by a water turbine 42 supplied with water through a pipe 44 from a feed pump 18. The boiler has two furnaces 57, 64, one having walls lined with tubes 55 through which water flows from the pump 48 through a pipe 52, and the other having walls lined with tubes through which steam flows to a superheater 62 above the furnace. Water from the feed pump passes through an economizer 15 and then through a pipe 21 to the collecting chamber 22. A valve 105 controlling the return flow from the water turbine and a valve 85 controlling the quantity of steam passing through the turbine 80 are operated in accordance with the variations of flow through the delivery pipe 52 of the circulation pump 48. The feed supply to the economizer is controlled by a valve 112 in accordance with the flow in the steam delivery pipe 82, and also by a pressure responsive device 113 operated in accordance with the water-level in the collecting chamber 22. The separation of steam is assisted by a rotary vane 98 on the shaft 37 between the steam turbine and the pump 48. The fuel supply to the burner 124 of the furnace 57 is controlled by a valve 128 operated in accordance with the pressure in the steam outlet pipe 67, and the supply to the burner 125 of the furnace 64 is controlled by a valve 131 operated in accordance with the temperature in the steam pipe. The air supplies to the burners are controlled by dampers actuated in accordance with fuel supplies.