baber/WOPTO huggingface dataset:
Patent GB-166516-A (GB)
Title: Improvements in springs
IPC: F16F3/06
Filed: 1921-06-08
Abstract: 166,516. Kreissig, E. July 12, 1920, [Convention date]. Metallic springs. - Consists of a metallic spring comprising inter-engaging rings caused by radial pressure to set up tensile or compressive tangential strains. The spring consists of two rings a, b, one bevelled conically on the inside, the other on the outside. The conical faces engage, and the inner ring a normally projects above the ring b. Under axial pressure the wedge action of the conical surfaces subjects the outer ring to outward pressure and the inner ring to inward pressure, the resulting stresses producing the spring effect. The friction between the surfaces has a brake action on return. The rings may be circular, elliptic, or polygonal, and of any suitable cross-section, and as shown in Fig. 3, a system may be built up of a number of elements. Only one of the rings a, b need have spring action.
Patent GB-501323-A (GB)
Title: Improvements in or relating to rotary air compressors
IPC: F04C18/344
Filed: 1938-05-26
Abstract: 501,323. Rotary compressors. BECKER, O. May 26, 1938, No. 16799. Convention date, May 26, 1937. (Class 110 (ii)] An air compressor has thin steel vanes 14 (approximately À3 to À5 mm.) fitted in slots in a rotor built up of segments 12 of light metal, and held together at the ends by rings 13 which are shrunk into position. The slots arc each formed in one face of a segment before the rotor is assembled. The driving shaft 30 extends through the hollow rotor and is shaped as a polygon at the end (left hand in Fig. 1) where it makes contact with the rotor., Driving means is keyed on to a part 31 of the shaft. The latter is reduced in diameter between the ends, and designed to fracture when a speed equal to 1¢ times the normal allowable speed is reached. The casing of light metal comprises inner and outer walls 4, 5, separated by ribs 6 into cooling chambers. A cast-iron liner 7 is provided. Inlet and outlet ports connect with slots 10, 11, respectively. The rotor extends as stub axles 22, 23, supported on bearings 24, 25. The covers 17, 18, are secured by studs 20 and nuts 21. The bearing 25 is fixed by a nut 26 on the shaft, but the outer ring of bearing 24 is allowed slight axial freedom to allow for expansion due to heating. Two discs 29 prevent oil being thrown 'outwards along the shaft. A lubricating pump 32 is driven by a tongue and groove coupling.34 and supplies oil to a nozzle 36. The pump may be supported by a flange 18, or by tensioning bands around the wall 4.
Patent GB-1297885-A (GB)
IPC: H03F1/34
Filed: 1971-05-19
Abstract: 1297885 Transistor amplifying circuits BENDIX CORP 19 May 1971 [30 June 1970] 15874/71 Heading H3T An audio amplifier comprises a complementary symmetry transistor amplifier including first and second transistors of opposite polarity type having base, commonly connected collector, and emitter electrodes connected across a voltage source; a transfer amplifier for applying a signal to be amplified to the base electrodes of the complementary symmetry transistor amplifier; and means for supplying idling current to the transfer amplifier which appears superimposed on the signal; in which means are provided for generating a current equal to the idling current and for applying it to the base electrodes of the complementary symmetry transistor amplifier in a direction to cancel the idling current superimposed on the signal. The first stage of an embodiment comprises transistors 21, 22 and 23, 24 respectively connected as Darlington pairs, forming a longtailed pair with common emitter resistor 26. Input signal is applied to the base of transistor 21 from terminal 10 over capacitor 12, and overall negative feedback to the base of transistor 24, from output terminal 67a. Transistors 23, 24 have as collector load the collector to emitter path of a further transistor 19 the base of which is biased from a transistor 18 strapped as a diode, and connected in the collector circuit of transistors 21, 22. Transistors 23, 24 drive an emitter-follower 34 which has as emitter load the collector to emitter path of a further transistor 35, the base of which is biased by means of Zener diode 28. Transistor 34 drives transistors 45, 48 which are connected in series with complementary transistors 44, 49, respectively; the stage operates in class B, and the transistors have as collector loads the collector to emitter paths of transistors 52, 41, respectively, these transistors deriving base bias from transistors 51, 40 respectively, connected as diodes. The transistors 44, 49 derive base bias from a diode chain 57-61 and resistor 63. Transistors 48, 45, respectively, drive output transistors 68, 69 which operate in class B and have their collector electrodes connected together and to the output load 74 via capacitor 72. Idling current for transistors 68, 69 is supplied by the constant current generator comprised of resistor 33 and transistor 30.
Patent GB-529359-A (GB)
Title: Improvements in dry shaving devices
IPC: B26B19/14
Filed: 1939-05-30
Abstract: 529,359. Dry shavers. BAHR, G. F. May 30, 1939, No. 15935. Convention date, March 4. [Class 131] In a dry shaver the driving connection between the cutter member and the drive shaft includes means for pressing the cutter member against the guard plate but prevents ejection of the cutter member on removal of the guard plate. The flat cutter 20 is pivotally mounted on pin 21 in a slot in a coupling member 16 with which the drive shaft 12 is in driving connection by a pin and slot arrangement 17, 18. A disc 35 on the drive shaft 12 forms an abutment for a spring 34 pressing the coupling member and its cutter outwardly towards the guard plate 24 by means of a washer 36. On removal of the guard plate the coupling member and the cutter 20 will be pressed outwardly until the washer 36 comes into contact with the pin 18 when no further action to eject the cutter is possible.
Patent GB-674118-A (GB)
Title: Improvements in and relating to fuelling systems for aeroplanes
IPC: B64F1/28
Filed: 1949-10-14
Abstract: 674,118. Fuel dispensing apparatus. WATTS, A. E., and PARKER. J. R. Oct. 14, 1949, No. 15944/51. Divided out of 673,998. Drawings to Specification. Class 116 A fuelling system for airplanes consists of submerged fuel storage tanks each having a pump pit, a plurality of submerged pit casings, cell units, each containing fuelling equipment mounted for vertical movement within the pit casings from a lowered position within the casing to a raised position outside and above the pit casing, valve pits adjacent the casings, distributing piping from the pump pits to the valve pits, and a pipe connection including a length of flexible hose between each valve pit and its respective cell unit. The embodiment disclosed is identical in construction with that disclosed in Specification 673,998, except in that it is restricted to the subjectmatter of Figs. 1, 2, 3 and 14 of the latter.
Patent GB-415867-A (GB)
Title: Improved electrical plug for use in radio receivers
IPC: H01R13/595
Filed: 1933-06-02
Abstract: 415,867. Plug couplings. BATE & CO., Ltd., J., and FISHER, S. N., Brearley Street, Birmingham. June 2, 1933, No. 15959. [Class 38 (i).] The plug comprises a disc a carrying the pins b, c which may be of different sizes and having a diametral rib d with a groove e at either side of one end of the rib, and a casing h having a flange g formed with two deep notches f co-operating with the grooves and separated by a tongue j. Separate openings are thus provided for the leads, which are securely held when the disc and casing are drawn together. The leads are connected to screws p by which the pins are secured. The disc and casing are held together by screws passing through bosses m in the casing, which has also two ribs o for locating the disc.
Patent GB-731274-A (GB)
Title: Improvements in high-compression compressors
Inventor: DOBSON LESLIE
IPC: F04B39/00
Filed: 1952-06-25
Abstract: 731,274. Pistons; stuffing-boxes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. June 12, 1953 [June 25, 1952], No. 15959/52. Classes 122 (1) and 122 (5). [Also in Group XXVIII] A ringless piston 3 in a compressor which is suitable for continuous operation over a period of several months in compressing fluids to 1000-2000 atmospheres in a cylinder 1 with inlet and outlet valves at its closed end and one or more metallic gland packings 6, 7 supported firmly near its open end, is surfaced with a tungsten-carbide shell 4. The latter, which may be formed from a plurality of separate rings, is secured between a flange 5 and a shrink-fitted steel collar 13 on the piston by brazing. The gland packing consists of a pair of bronze or tungsten-carbide segment rings 6, 7 embraced by steel springs 8, 9 and supported on a backing 10 of tungsten-carbide which is secured in the gland housing by brazing. A bush 12, which is a sliding fit on the piston, is provided in the lower part of the cylinder and a narrow bore in the head 2 for suction and delivery of gases through non- return valves. Specification 643,435 is referred to. The Provisional Specification describes also that the shell 4 may be shrunk on to the piston.
Patent GB-1100962-A (GB)
Title: Improvements in and relating to core barrel apparatus for deep drilling
IPC: E21B25/02
Filed: 1965-04-14
Abstract: 1,100,962. Boring earth &c. BOYLES BROS DRILLING CO. Ltd. 14, April, 1965 [12, May, 1964], No. 15962/65. Heading E1F. A wire-line core barrel has the inner tube assembly 14 fixed to the outer tube 12 by a tubular spring latch 77 which has slots forming fingers 79 urged into engagement with the outer tube by downward movement of a sleeve 89. The sleeve has ports 129 closed by a spring biassed valve 118 which is moved to an open position by a pull on the spearhead 126. Further pull releases the latch and moves a valve 95 to permit flow through the sleeve to reduce resistance during movement of the assembly 14 from the tube 12. During drilling the valve 95 is positioned as shown, but when the inner tube (25) (Fig. 2, not shown) is filled the valve is lifted to block ports 74 causing a rise in the pressure of the drilling fluid which is indicated on a pressure gauge to warn that drilling should be stopped and the assembly 14 removed. If the assembly is pumped into the tube 12, the valve 118 is closed, but if the assembly is dropped into the tube the valve 118 opens and since the valve 95 is in its raised position the fluid flows through the centre of the sleeve so that the assembly offers decreased resistance to falling. If the latch does not engage, the valve 95 remains raised and does not uncover the ports 74 preventing drilling fluid from circulating down the tube so that the rise in pressure indicates that the tube assembly must be reset. An overshot (155) (Fig. 11, not shown) has spring fingers (174) engaging the spear head and may be fitted with seals on its body to permit pumping through the tube. If the core barrel is lowered through the tube supported by the overshot, a ring (189) is fitted to the lower part of the spearhead so that when the inner assembly is latched to the tube the spring fingers 174 can be forced over the ring which maintains them open to permit the overshot to be removed from the tube. A washer 44 (Fig. 1) may be removed in order that the inner tube (25) (Fig. 2, not shown) may engage a shoulder (46) in the drill head (20) when breaking-off cores of strong rock.
Patent GB-1534241-A (GB)
Title: Clamping means for a combustion tube of an oxygen lance
IPC: F23D14/46
Filed: 1977-04-18
Abstract: 1534241 Oxygen lances M SCHULZ 18 April 1977 [27 April 1976] 15998/77 Heading F4T Means 1 for clamping the combustion tube of an oxygen lance comprises a gripping element 7, a sleeve 5, a nut 2, a thrust bearing 4, and chuck jaws 3, sealing means 8, 9, being provided between members 2, 3, and 2, 5, and sealing means 10, 11, being provided between members 5, 7, and 7, 2.
Patent GB-202770-A (GB)
Title: Combination nut cracker and nut extractor
IPC: A47J43/26
Filed: 1922-06-09
Abstract: 202,770. Whittingham, H. M. June 9. 1922. Nut-crackers.- The handles of a nut-cracker are hollowed to rereceive detachable end pieces as shown, one of which carries a knife or nut-extractor while the other carries a detachable toothpick. The detachable ends may be secured by screwing or by a bayonet or other joint.
Patent GB-946514-A (GB)
Title: Gate valve construction with floating seat rings in the valve gate
IPC: F16K3/02
Filed: 1962-04-27
Abstract: 946,514. Valves. GROVE VALVE & REGULATOR CO. April 27, 1962 [May 1, 1961], No. 16132/62. Heading F2V. A sliding gate valve is provided with a floating seat housed in an annular recess in one or each side of the gate and comprising a pair of seat rings 36, 37 which define between them an annular groove housing a resilient seal ring 40, the seal ring, in closed position of the valve, being in sealing contact with the valve body surrounding the flow passage 12a, the seat rings 36, 37 being secured together, e.g. by screws 52. The seal ring is positively retained in the groove by lipped portions 38, 39 of the rings 36, 37. The outer periphery of the seat is sealed in the recess by a ring 42 and springs 44 urge the seat outwardly of the gate. As shown, the valve body comprises a generally oval spacing member 20 secured between two plate members 12 which define the aligned flow passages 12a. Dowels 18 serve to prevent radial distortion of the oval member 20 under the fluid pressure.
Patent GB-884698-A (GB)
Title: Improved tube coupling
IPC: F16L17/02
Filed: 1960-05-06
Abstract: 884,698. Tube couplings; VAN DEN BERG, C., and VAN DEN BERG, X. May, 6, 1960 [May 11, 1959], No. 16137/60. Class 99(1). Tubes A, B are coupled by a sleeve 17 of flexible material permanently fixed at one end within bulged annular zones at the end of the tube A and removably engaging at its other end the inside of the tube B being closely applied to a bulged annular zone at the end thereof under the action of pressure fluid contained in the pipes. The sleeve 17 may be of rubber, polyethylene of polyvinyl and preferably consists of annular zones which are successively flexible and rigid. Projections 15, 16 on the sleeve are compressed in the bulged portion of the tube B which may be provided with one or more apertures 20 for the escape of air. The tube B may also be formed with an aperture to correspond with one or more-apertures in the sleeve through which fluid may be evacuated from the pipes.
Patent GB-221878-A (GB)
Title: Improvements in or relating to belt fasteners
IPC: F16G3/08
Filed: 1923-06-22
Abstract: 221,878. Stewart, G. E. June 22, 1923. Belt fastenings.- A lap - joint belt fastening comprises a stamped steel plate A double curved as shown in Fig. 2, with longitudinal strengthening ribs D, E, and transversely disposed bolt holes. Bolts C having countersunk heads with flattened sides engage holes in a lower plate B having a rounded surface and which may be of malleable cast iron. A piece of leather G may be riveted to the plate B to render the driving face flush. A number of such fastenings may be arranged across the lapped joint. Specifications 11065/87 and 23526/92 are referred to.
Patent GB-1185105-A (GB)
Title: Improvements in or relating to Warning Light Installations for Vehicles, particularly Motor Vehicles
IPC: B60Q1/38
Filed: 1967-04-10
Abstract: 1,185,105. Inert switches. ROBERT BOSCH G.m.b.H. 10 April, 1967 [9 April, 1966], No. 16258/67. Heading H1N. [Also in Division G4] A warning light switch 17 for motor vehicles which in its " on " position connects all the flashing lights to a current source via a pulse generator 16 has the switch 17 and generator 16 mounted in a sheet metal housing 25 with an insulating base 28. The reciprocal switch spindle 32, carrying a pilot light 36 in a transparent knob 37, has a disc 33 engaging a matched opening (34, Fig. 3) in an insulating plate 29 slidable in grooves 30 in housing 25. One side of plate 29 has contact paths (40a-40f, Fig. 3) co-operable with resilient fixed contacts 26a<SP>1</SP>, 26a-26e, and the other side mounts the generator 16, which may be a hot-wire controlled snap disc or electronic, and an electromagnetic rotary armature relay 18. When switch 17 is " off," O, Fig. 4, and ignition switch 21 is closed, the flashing lights 10, 12 or 11, 13 on one side of the vehicle can be connected to source 19 by selector switch 14 via a blinker 15 and contacts 42 of switch 17. When switch 17 is " on," I, Fig. 4, all the lights 10-13 are connected to source 19 via contacts 43, 44 of switch 17, contacts 45 of pulse generator 16, and contacts 46, 47 of relay 18 controlled by generator 16. Contacts 42, 43, 44 are formed by cooperation between contact paths (40a-40c) and contacts 26a<SP>1</SP>, 26a-26c.
Patent GB-475638-A (GB)
Title: Improvements in vibratory sieves
IPC: B07B1/30
Filed: 1937-06-11
Abstract: 475,638. Sifting-apparatus. GROPPEL, K. June 11, 1937, No. 16290. [Class 117] [Also in Group XXIV] A balance weight is resiliently connected to a vibrating sieve rigidly connected to its driving mechanism and the balance weight is driven through a resilient connection. In the form shown, the balance weights 6 are connected to the sieve 1 by springs 7 and are driven from the sieve by a link 11, pivoted arm 10, 10a, and the weaker spring 13, the sieve itself being vibrated by a crank 5. In a modification, the balance weights are driven by additional cranks from the main crank shaft through springs. The centre of gravity of the system of weights is on or near the horizontal axis through the centre of the sieve.
Patent GB-779834-A (GB)
Title: Improvements relating to recording and/or indicating and/or control apparatus
Inventor: FIELDEN JOHN ERNEST
IPC: G05B11/01
Filed: 1954-06-02
Abstract: 779,834. Electric follow-up systems. FIELDEN ELECTRONICS, Ltd. Aug. 26, 1955 [June 2, 1954], No. 16293/54. Addition to 671,389. Class 40(1), In an apparatus for recording or controlling as described and claimed in the parent Specification comprising an instrument with a moving pointer, an arm mounted coaxially therewith, means for controlling an oscillatory circuit to permit or suppress oscillation in accordance with the relative positions of the arm and pointer and means controlled thereby for energizing a reversible motor to drive the arm to a predetermined position relative to the pointer and to move a recording pen or control drive a similar amount, the oscillatory circuit output is modulated at the energizing frequency of the motor which is fed with a signal formed by adding to the demodulated signal a fixed amplitude signal of the same frequency but opposite phase. The amplitude of oscillations generated by oscillator V1 is determined by the capacitance between the pointer b of moving coil meter M and a coaxially mounted followup arm c. The oscillator is amplitude modulated at mains frequency via R14 and its output demodulated by anode bend detector V2 to provide a mains frequency signal, the amplitude of which depends on the gap between b and c which is applied to valve V3. A mains frequency reference signal is also fed to the cathode of V3 so that the phase of its output, which is supplied to two-phase motor d which drives the follow-up arm c to a predetermined position relative to pointer b, depends on the relative amplitudes of the reference signal and demodulator output. Hunting is obviated by charging capacitor C3 via the meter coil in accordance with the voltage across resistor R5.
Patent GB-588917-A (GB)
Title: Improvements in and relating to high frequency electrical oscillators
IPC: H01J23/36
Filed: 1941-12-17
Abstract: 588,917. Magnetrons. WRIGHT, C. S., RANDALL, J. T., SAYERS, J., BOOT, H. A. H., and DAWTON, R. H. V. M. Dec. 17,1941, No. 16317. [Class 39 (i)] A magnetron of the type described in Specification 588,185 is coupled directly to. a hollow conducting wave-guide, without the interposition of any other kind of transmission line. The cathode K, Fig. 1; is surrounded by a number of identical resonators R machined out of a solid block and opening into the cathode space C. Both the resonators and the cathode space open at their ends into end spaces 1, one of which has a tubular opening 3, covered by a glass cap S, and engaging the wave-guide 4. Antennµ 2 are connected to parts of the resonator system, vibrating in opposite phase. These antennµ may be the straps used, in Specification 588,916, to keep the resonators in unison ; or a single radiating grid, backed by a reflecting plate, may be used. The waveguide may be at right angles to the axis of the magnetron and communicating with both end chambers, each of which then contains antennµ. In a modification, energy is radiated from an aperture 12, Fig. 5, in one of the resonators, direct into the wave-guide 4. A tapered horn 13 is provided. If the wave-guide is rectangular, the aperture 12 would be a slot parallel to the long dimension of its cross-section. The glass seal S may be dispensed with if the guide is evacuated. The arrangement is suitable for both transmission and reception. Specification 540,232 also is referred to. According to the Provisional Specification, the arrangement may be used with velocity-modulated tubes.
Patent GB-476391-A (GB)
Title: Improvements in and relating to electric incandescent lamps
IPC: H01K1/54
Filed: 1936-06-11
Abstract: 476,391. Electric incandescent lamps. BRITISH THOMSON-HOUSTON CO., Ltd. June 11, 1936, No. 16339. Convention date, June 15, 1935. [Class 39 (ii)] In an electric incandescent lamp provided with a filament containing a carbide of the group consisting of tantalum, hafnium, zirconium, and niobium, chemical dissociation of the carbide during operation of the lamp is prevented by providing a carbon-bearing medium which is decomposable at or about the operating temperature of the filament to deposit carbon thereon, and a source of uncombined carbon serving to regenerate the carbon medium. In the example the carbide filament 4 is mounted in a bulb 1 which may be filled with argon at a pressure within the range of 0À5-2À0 atmospheres. The source of uncombined carbon for preventing chemical dissociation of the filament consists of a deposit of lamp-black, or soot on the filament leading- in wires 5, 6 and on the stem 2 and press 3 of the bulb. To facilitate the transfer of carbon from the source of supply to the filament the bulb contains a quantity of carbon disulphide, which is decomposed at the temperature at which the filament operates. Alternatively other vaporizable materials of similar characteristics, such as carbon tetrachloride, may be used. In a modification the source of uncombined carbon consists of a solid body of carbonaceous, material supported adjacent to the filament, while in a further modification a carbonaceous filament with its own separate leading-in wires is suspended below the refractory carbide filament. The resistance of the carbonaceous filament is such that its temperature is lower than that of the main filament; for example with a main filament of tungsten carbide at a temperature of about 3000‹ C., the temperature of the auxiliary filament will be about 800‹ C. The carbide filaments may consist wholly or partly of a carbide, or of a mixture of two or more carbides, for example four parts of tantalum carbide to one part of either hafnium or zirconium carbide. The filaments may be formed by known methods, a preferred method comprising the mixing of the oxide of tantalum, or a corresponding metal, with a cellulose binder to obtain a plastic mass which is extruded through a fine orifice. The resulting filament is carbidized by heating with free carbon in a reducing atmosphere.
Patent GB-554139-A (GB)
Title: Improvements in the production of chlorine
IPC: C01B7/03
Filed: 1941-12-18
Abstract: 554,139. Chlorine. DREYFUS, H. Dec. 18, 1941, No. 16347. [Class 90] Chlorine is produced by subjecting a dry powdered mixture of magnesium chloride and magnesia to reaction with oxygen while suspended in a gas and passing down a reaction chamber in a helical path. The mixture is fed from a hopper 16 to a current of air flowing through pipe 6; further air is admitted at 4, and the chamber is heated by the combustion of fuel admitted at inlet 5.