baber/WOPTO huggingface dataset:
Patent GB-799165-A (GB)
Title: Improvements in radio-frequency tuning devices
IPC: H03H5/00
Filed: 1955-09-28
Abstract: 799,165. Electrical circuit assemblies. COLLINS RADIO CO. Sept. 28, 1955 [Jan. 25, 1955], No. 27595/55. Class 37. A parallel resonant circuit associated with an oscillator valve 30 comprises a metal plate 11 connected to the valve anode by a clamp 28 and serving as a variable inductor, a ring portion 17 attached to the plate 11, a rotary shaft 31 having an insulating portion 22 and a conducting portion 13, capacitor plates 12 attached to the portion 13 and co-operating with the plate 1 1 to vary the capacitance between the valve anode and a base-plate 16 to which the plates 12 are connected through the shaft portion 13, and an arm 14 attached to the shaft portion 13 and carrying contacts 15 which bear against the ring 17 and a ring 18 attached to the plate 16 to vary the effective inductance between the valve anode and the base-plate 16 as the shaft 31 is rotated. The base-plate 16 is mounted upon an earthing plate 27 but is separated therefrom by an insulating sheet 32, thus providing a bypass capacitor to earth for the end of the resonant circuit remote from the valve anode. The assembly is shown in its highest resonant frequency position; as the shaft is rotated clockwise, both the inductance and effective capacitance is increased, the capacitance between the plates 12 and that portion of the plate 11 beyond the position of the contacts 15 not being effective so that the capacitance effectively depends upon the extent of the overlap between portions 34 of rotor plates 12 and the portion 35 of plate 11:
Patent GB-975723-A (GB)
Title: Pneumatically-operated buffer cassettes for use with tape apparatus
Inventor: WEISS WERNER
IPC: G11B15/58
Filed: 1963-07-12
Abstract: 975,723. Feeding record tapes. SIEMENS & HALSKE A. G. July 12, 1963, No. 27653/63. Heading G5R. A vacuum anti-inertia tape-loop box 1, forming part of a tape-feed system, has, in place of the usual slot, a groove 2 with a number of holes 4 communicating with the usual transfer windway 8, the holes being non-linearly spaced such that the area per unit length of the box increases from a minimum at the centre to a maximum some four times the minimum at the two ends. The construction is stated to reduce vacuum wastage and to compensate for loss of sensitivity of the system at the limiting positions of the tapeloop 5. The minimum spacing of the holes is desirably 20 mm for a box length of 1 metre. The same principle is stated also to be applicable to pneumatically-operated control means of the self-balancing type in general normally using an air-slot, but there is no disclosure of a specific embodiment.
Patent GB-519091-A (GB)
Title: Improvements in or relating to cast metal pipe joints
IPC: H02G15/013
Filed: 1938-09-24
Abstract: 519,091. Alloys. HENLEY'S TELEGRAPH WORKS CO., Ltd., W. T., MOLLER, P. D., and BREEZE, H. W. Sept. 24, 1938, No. 27909. Drawings to Specification. [Class 82 (i)] [Also in Group XXII] A sealing alloy, for making a cast joint between lead or lead alloy pipes, comprises (a) 63 per cent. of tin and 37 per cent. of lead, or (b) 52 per cent. of tin, 31 per cent. of lead, and 17 per cent. of cadmium.
Patent GB-953075-A (GB)
Title: Guide control apparatus for self-propelled bodies and primarily mowing machines
IPC: A01D34/00
Filed: 1960-08-12
Abstract: 953,075. Toys. H. POTTER. Sept. 26, 1961 [Aug. 12, 1960], No. 27918/60. Heading A6S. [Also in Division B7] In guide control apparatus (see Division B7) for constraining a toy aircraft to move in a helical path at the end of a rope winding on or off a drum 5, a follower 24 displaced axially of the drum by the rope engages at the upper or lower limit of its displacement with one of abutments 18, 22 whereupon the drum rotates and the aircraft moves in a circular path.
Patent GB-1237565-A (GB)
Title: Improvements relating to impregnation apparatus
Inventor: THORPE BRIAN THOMAS
IPC: H02K15/12
Filed: 1968-06-12
Abstract: 1,237,565. Impregnating electrical windings. MUIRHEAD Ltd. 12 June, 1969 [12 June, 1968], No. 27924/68. Heading D1P. Apparatus for treating electrical windings with an impregnation fluid comprises; holders 5 each having a rotatable mandrel on which the winding to be treated is fitted; a chaindrive 60 extending along the path of movement of the holders and co-operating with sprockets 7 on the holders to spin the mandrels continuously while they are moved along the path; arrangements for engaging the drive with, and disengaging the drive from, each holder at the beginning and end of the path respectively; an applicator for supplying impregnation fluid to each winding at the beginning of its path; and an oven through which the holders pass as they travel along their path, during which passage the fluid impregnating the windings is at least partially cured. The applicator (Fig. 2, not shown) is mounted adjacent to the oven inlet and is movable vertically, laterally or obliquely so that the application nozzle can reach all parts of the windings. The oven itself is tiltable about an axis so that percolation of the impregnant can be assisted by gravity. The holders are pushed manually in series over a guide 49 and the sprockets 7 are automatically engaged by the horizontal run 64 of the continuously-driven chain 60. As each new holder is pushed into the oven, a holder furthest from the inlet is ejected on to a slideway 50 where it is held by a catch 75 until the slideway tilts bodily about a pivot 51 to slide the holder down to the lower end 80. Inter-connected micro-switches, such as 81, form a locking arrangement which prevents opening of the inlet-door of the oven when the slideway is downwardly pivoted and viceversa.
Patent GB-630110-A (GB)
Title: Improvements in or relating to ultra-high-frequency electron-discharge tubes of the velocity-modulation type
IPC: H01J23/213
Filed: 1945-06-28
Abstract: 630,110. Velocity-modulated tubes. SPERRY GYROSCOPE CO., Inc. June 28, 1945, No. 28024/47. Convention date, June 28, 1944. Divided out of 630,069. [Class 39 (i)l In a multi-resonator velocity-modulation tube all the resonator entrance walls are connected together and all the exit walls together, and the adjacent walls of adjacent resonators are interconnected by extensible drift-tubes so that gang-tuning is effected by moving bodily all the exit walls with respect to the entrance walls. The entrance walls to resonators 116<1>, 128<1>, 158 are secured to one set of screws 176, and the exit walls to another set of screws 179. The two sets of screws 176, 179 are secured to end discs 175, 173 whose distance apart may be varied by means of a thermally compensated composite screw 188. The walls of resonators 128, 158<1> are adjustably secured to the screws 176, 179 so that the tuning of the individual resonators, or the distances between the entrance walls or between the exit walls of the resonators may be varied. The gang tuning structure may be applied to resonators designed for harmonic frequency relations. Specifications 523,712 is referred to.
Patent GB-1451173-A (GB)
Title: Process for preparint farnesyl acetic esters and 2-substituted  products thereof
IPC: C07C69/74
Filed: 1974-06-25
Abstract: 1451173 Farnesyl acetic esters KURARAY CO Ltd 25 June 1974 [13 July 1973] 28178/74 Heading C2C Farnesyl acetic esters of Formula I in which R 1  is H or C 1-20  hydrocarbyl and R 5  is C 1-8  alkyl or C 3-8  cycloalkyl, are prepared by reacting nerolidol with a compound of Formula II in which R 2 , R 3  and R 4 , which may be the same or different, are C 1-8  alkyl or C 3-8  cycloalkyl. Compounds I are novel when R 1  is C 1-20  hydrocarbyl. 1,1 - Dimethoxy - 1 - cyclohexyloxy - ethane is prepared by reacting acrylonitrile with cyclohexanol in the presence of HCl to obtain the corresponding imino-ether hydrochloride and then reacting this compound with methanol. Pharmaceutical compositions having antiulcer and anti-dermatosis activity, comprise a compound I in which R 1  is C 1-20  hydrocarbyl together with a pharmaceutical carrier.
Patent GB-621881-A (GB)
Title: Improvements in or relating to hand-bags
IPC: A45C3/06
Filed: 1946-09-20
Abstract: 621,881. Handbags. POTTS, M. M. Sept. 20, 1946, No. 28188. [Class 133] A handbag is provided with a side or sides or a portion of a side or sides (in a panel) which, being hinged at the bottom and if necessary suitably reinforced or stiffened, is or are adapted to be opened to a position at right angles to the bag to form a tray-like support and maintained in such open position by means designed to resist, until intentionally moved, the closing of same. As shewn, a handbag a has the side a<SP>1</SP> formed with a tray-panel b hinged at b<SP>1</SP> and provided with loops c and a compartment d for receiving articles e. A mirror f pivoted at its lower end in a bracket g on the panel b' and engaging the under surface of a stop h on the rear of a box-like cavity resists the closing of the panel. The cavity j is isolated from the rest of the bag's interior a<SP>2</SP> and is provided with clips or compartments. The panel b when closed is secured by a tongue b' and fasteners b<SP>3</SP> and b<SP>4</SP>. A pocket k is provided to receive a key m secured by a fine chain m<SP>1</SP>. The pivotal arrangement of the mirror f may be spring-loaded so that it automatically engages the stop on opening the panel b. Alternatively side members to resist the closing of the panel b may be substituted for the mirror f or may be used in conjunction with the mirror which is independently pivoted from the back of the cavity j and does not engage the stop.
Patent GB-534294-A (GB)
Title: Improvements in thermionic tube amplifiers
IPC: H03F1/36
Filed: 1939-10-20
Abstract: 534,294. Valve amplifying circuits. ELECTRICAL RESEARCH PRODUCTS, Inc. Oct. 20, 1939, No. 28341. Convention date, Nov. 22, 1938. [Class 40 (v)] A sound recording system employing a negative feed-back recorder comprises a microphone 14 feeding bus-bars 12, 13 energy from which is fed by means of a transformer 22 to an amplifier 11 comprising push-pull pentodes 29, 30 and electron beam valves 45, 46. The output from valves 45, 46 is fed to the driving coil 16 of a recorder which has a coil 19 for providing a negative feed-back to an amplifier 21 which is coupled to the input of amplifier 11 through condensers 64, 65 and resistances 32, 36. The amount of negative feed-back is rather less than that necessary to produce a flat frequency characteristic over the whole frequency band as this produces high frequency instability, and the resultant drooping low-frequency end of the characteristic is corrected by suitable proportioning of condensers 64, 65 and resistances 24, 32, 26. 36 shunting the inputs to valves 29, 30. The amplifier 11 is provided with internal negative feed-back paths 47, 48 from the anodes of valves 45, 46 to the cathodes of valves 29, 30. To improve the quality of the amplifier 11 the screen grids are energized from a point 58 between resistances 59, 60 forming a bleeder circuit across the main supply. By suitably proportioning the resistances 59, 60 the screen potential is caused to vary such that the sum of the screen and plate currents is constant, thereby keeping the cathode current and grid bias for each tube constant. This arrangement gives greater stability of the negative feed-back and lower harmonic distortion. Switches 31, 33, 35, 37, 70, 77 and 78 are provided for use when the recorder is not of the negative feed-back type. In this case. the amplifier 21 may be switched out or may be connected in the signal circuit for extra gain.
Patent GB-279520-A (GB)
IPC: C08J3/09
Filed: 1927-10-25
Abstract: 279,520. Du Pont de Nemours & Co., E. I., (Assignees of Bradshaw, H.). Oct. 25, 1026, [Convention date]. Coating-compositions, containing. - Cellulose esters or ethers also contain, as a solvent, an alcohol preferably boiling at about 180‹ C., derived from a heterocyclic compound such as furfural. The derivative is preferably an hydrogcnated furfural, and tetrahydro-furfuryl alcohol is specified. The solvent is particularly useful for pyroxylin lacquers, and the compositions may contain a resin such as dammar and other solvets such as hydrocarbon oil, a butyl ester, benzene &c. By the addition of butyl alcohol or acetate, solvent naphtha, ethyl alcohol &c. blending with gasoline is effected. Zinc oxide mav be included in the compositions. In examples of coating compositions the following materials are specified : (1) Pyroxylin, dammar resin, dibutyl phthalate, butyl acetate, tetrahydrofurfuryl, ethyl and butyl alcohols, toluol and gasoline. (2) Pyroxylin, zinc oxide, dammar resin, tricresyl phosphate. 'butyl acetate, tetrahydro-furfuryl, ethyl and butyl alcohols, toluol, xylol and gasoline.
Patent GB-918707-A (GB)
Title: A device for the remote transmission of information set up in a calculating machine
IPC: G06C27/00
Filed: 1959-08-19
Abstract: 918,707. Electromagnetic switches. OLYMPIA WERKE A.G. Aug. 19, 1959 [Oct. 27, 1958], No. 28385/59. Class 38 (5). [Also in Group XIX] Between a calculating or like machine (see Group XIX) and signal output terminals is a multi-position switch comprising setting slides 10, Fig. 3, bearing spring contacts 37, Fig. 2a, having upper and lower buttons 37b, 37a and mounted in recesses. Fig. 2b. The lower buttons 37a make contact with denominational contact strips 39, each corresponding to one of the slides 10. A parallel plate 42 bearing like strips crossing those of plate 39 at right angles may be lowered by means of an electromagnet 47 against springs 55a, 55b, to make contact with the upper buttons 37b. When the slides 10 are positioned, the magnet 47 is energized, lowering plate 42 and making contacts between strips 39 and 42. Specification 918,706 is referred to.
Patent GB-1379326-A (GB)
Title: Clutch assembly
IPC: F16D13/50
Filed: 1972-10-25
Abstract: 1379326 Friction clutches DAIKIN SEISAKUSHO KK 25 Oct 1972 [17 Nov 1971 12 Jan 1972] 28404/74 Divided out of 1379325 Heading F2C In a friction clutch having a driven disc 4 between a flywheel 1 and a presser plate 3, springs 20, 21 on either side of the driven disc hub 4 separate the latter from both the flywheel 1 and presser plate 3 during clutch disengagement, the springs 20, 21 being in balance when the clutch is disengaged. Shims may be provided between one or both of the springs and their abutments 14a, 22 to adjust the gap 5 between the driven disc 4 and the flywheel 1 during clutch disengagement. The clutch may, as shown, be a diaphragm spring clutch or may be of the type having radial release levers.
Patent GB-467542-A (GB)
Title: Improvements in and relating to sliding doors
IPC: B60J5/06
Filed: 1936-10-20
Abstract: 467,542. Vehicle doors ; operating appliances. NATIONAL PNEUMATIC CO. Oct. 20, 1936, No. 28523. Convention date, Nov. 6, 1935. [Class 103 (iv)] [Also in Group XXV] A door engine 6 for operating sliding doors 1, 2 is mounted on a guide rail 3 so that the axes of the piston and rail remain parallel. The cylinder 6 is secured to the rail by a fixed half clip 8, Fig. 2, and a hinged half clip 10, and chain carrying sprockets 26 are mounted on brackets 29 fixed to the guide rail 3. The doors are supported by brackets 14 from a bar 13 carrying rollers 5 which run on a bar 4 secured in the rail 3 ; the height of the doors being adjusted by the position of an eccentrically mounted disc 15 pivoted in the bar 13, the brackets 14 being secured to the bar 13 by bolts 24 which pass through elongated holes in the bracket. The chain 25 passes around the sprockets 26 and the ends are adjustably secured to a bracket 33 attached to the end of the .piston rod 7.
Patent GB-943439-A (GB)
Title: A method of and means for cleaning dried fruit
Inventor: BURGESS LESLIE NORMAN
IPC: B07B13/00
Filed: 1961-08-05
Abstract: 943,439. Cleaning dried fruit. BURGESS ENGINEERING STOKE-ON-TRENT Ltd. Oct. 24, 1962 [Aug. 5, 1961], No. 28526/61. Addition to 871,468. Heading A4C. Dried fruit is broken down on a table 10 and passed by a shoot 11 to a tank 12, incorporating transverse weirs 121 into which tank 12 is continually pumped water from a reservoir 13, whereby heavier contaminants separate from the floating fruit which by means of a pump 15 is then passed with water tangentially into a cyclone separator 16 to remove further impurities; thereafter the fruit and water pass through a pipe 17 to a rotary sieve 18 whereby water is separated from the fruit, the latter being rinsed by water from a tank 23 pumped via a valve 25 as it passes by means of a shoot 20 from the sieve 18 into a basket 211 in a spin drier 21, the fruit being dried in the spin drier 21 and then discharged from a shoot 26. The fruit is preferably discharged on to a vibratory conveyer 27 above which is located a magnet 28 for removing paramagnetic contaminants. Water draining into a tank 19 from the sieve 18 and into the tank 23 from the spin drier 21 is fed back to the reservoir 13 by means of a pipe 191 and an overflow pipe 231 respectively. The apparatus is arranged as a unitary assembly having a control panel.
Patent GB-205682-A (GB)
Title: Improvements in or relating to means for the facilitating of lighting of fires
IPC: F24B15/00
Filed: 1922-10-20
Abstract: 205,682. Ogden, A. W. Oct. 20,1922. Laying and lighting fires; braziers.- A device for facilitating the lighting of fires and adapted also for use as a picnic stove comprises two metal or refractory plates 1, 2, which have rows of perforations 7, 8 and are hinged at 3, 4, to opposite sides of a frame 5 which carries a lifting handle 6. Forks 9, 10 are adapted to be inserted in the holes 7, 8 respectively and when the device is in position in the grate paper is placed between the grate and the fork 10, wood or a fire-lighter between the forks 9, 10, and coal on the fork 9. To adapt the device for use as a picnic stove, perforated end plates 12, Fig. 4, are provided having bent over ends 12a engaging at 13 over the side members of the frame 5 and the plates 1, 2 are fitted with prongs 11 adapted to penetrate the ground.
Patent GB-860462-A (GB)
Title: Improvements in and relating to switching devices using transistors
Inventor: ROZNER FELIX
IPC: H03K4/50
Filed: 1956-09-18
Abstract: 860,462. Transistor circuits. FERGUSON RADIO CORPORATION Ltd. Sept. 2, 1957 [Sept. 18, 1956], No. 28546/56. Class 40 (6). [Also in Group XIX] A mono-stable circuit for charging or discharging a capacitor comprises two complementary transistors with the base of each connected directly to the collector of the other and through an impedance to different terminals of a supply source, the circuit being such as to have a stable condition with both transistors non- conductive and an unstable condition with both conductive and being used to cause the capacitor to charge or discharge. In Fig. 2 the capacitor C is connected in the emitter circuit of one of a pair of cross-coupled complementary transistors T1, T2 and through a transistor T3 arranged to supply a constant current to the capacitor. The potential on the lower plate of the capacitor accordingly rises until transistor T2 conducts, whereupon by regenerative action both transistors are driven to saturation so that the capacitor is rapidly discharged. The discharge continues until voltage at the emitter of transistor T2 falls to a value such that the two transistors cut off, whereupon the capacitor commences to charge again. A substantially linear sawtooth is thus available across the capacitor and pulse outputs are available at terminals D and F. If the upper terminal of the capacitor C is disconnected from the V1 terminal and connected to a zero potential terminal the capacitor will be discharged by the circuit instead of charged, while if it is connected to a potential mid-way between zero and V1, the capacitor will charge during the first part of the cycle and discharge during the remaining part. Fig. 4 shows a " diode pump circuit " in which pulses applied at E<SP>1</SP> cause the potential at the lower plate of capacitor C to rise in steps until the circuit T1, T2 becomes conductive and causes the potential to rapidly fall again. The input pulses at E<SP>1</SP> are derived from a similar circuit and output pulses are derived from an impedance R3 and applied to a further similar circuit.
Patent GB-603697-A (GB)
Title: An improved means for electrical testing
IPC: G01R31/01
Filed: 1945-10-29
Abstract: 603,697. Impedance measurements. FLACH, W. I., and TELEGRAPH CONDENSER CO., Ltd. Oct. 29, 1945, No. 28559. [Class 37] An electrical component to be tested is inserted in one arm of a bridge, whereof two of the remaining arms comprise elements of fixed value, while the value of an element in the fourth arm is continuously varied so as to balance the bridge if the value of the component under test lies within required limits. A capacitor Cx under test forms one arm of a bridge, the other arms of which are formed by a standard capacitor Cs, a fixed resistor R1, and a fixed resistor R2 in series with resistors R3, R4 in parallel. The resistor R3 is fixed during the test, while the resistor R4 is continuously varied from zero to a predetermined maximum value, for example by means of a continuously rotating arm. The bridge is fed from an A.C. supply through a transformer Tr1 and its output is fed through an amplifier A, transformer Tr2, and rectifier V1, to the grid of a gas-filled relay valve V2 which is so biassed by a resistor R5 and capacitor C5 that the valve is only rendered conducting when the bias voltage supplied from the rectifier V1 is zero, that is when the bridge is balanced. In the anode circuit of the valve V2 is a relay Re1 and limiting resistor R7. The relay Re1 closes contacts -S1 in a lamp circuit so that an indication is given if the bridge passes through the balance point during the variation of the resistor R4, or the capacitor Cx may be ejected from its testing position in one direction or another according to the result of the test. The relay Re1 also closes contacts S2 which close the circuit of a relay Re2 in series with a limiting resistor R8. The relay Re2 opens contacts S3, which breaks the anode circuit of 'the valve V2. A highcapacity electrolytic capacitor C1 is connected in parallel with the relay Re2 to cause a time delay. On operation,'the relay Re2 also opens contacts S4 in the circuit of the capacitor C1. The component under test may alternatively be a resistor or an inductor and the other bridge arms may be formed by inductors or capacitors.
Patent GB-1191695-A (GB)
Title: A method for Combating Nematodes
IPC: C07F9/54
Filed: 1967-06-21
Abstract: 1,191,695. Nematocides containing phosphonium compounds. C1BA Ltd. 21 June, 1967 [22 June, 1966; 28 Sept., 1966], No. 28596/67. 'Heading A5E. [Also in Division C2] Nematocidal compositions comprise a compound of formula and, if desired, a di-, tri-, or 'polyhalogen adduct thereof, where R 1  R 2 , 'and R 3  represent aliphiatic, araliphatic, aromatic or heterocyclic radicals which may be substituted or may be interrupted by one or more oxygen or sulphur atoms, R 4  is an optionally substituted aliphatic, araliphatic, anomatic or heterocyclic group; and X- is an anion. The compositions may be formulated as solids or liquids.