baber/WOPTO huggingface dataset:
Patent GB-787522-A (GB)
Title: Improvements in or relating to frequency and phase shifters and modulators for very high frequency electro-magnetic waves
Inventor: WRIGHT PETER MAURICE
IPC: H01P1/19
Filed: 1955-05-05
Abstract: 787,522. Waveguide accessories. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Feb. 17, 1956 [May 5, 1955], No. 13034/55. Class 40 (8). [Also in Group XL (c)] A frequency or phase-shifter or modulator comprises a ferrite element arranged in a waveguide and subjected to a magnetizing field of intensity and direction chosen to produce reflection of one plane-polarized component and transmission of the other plane-polarized component of a circularly-polarized wave. Planepolarized wave energy from a rectangular waveguide 1 is converted to a circularly-polarized mode by a quarter-wave plate 5 situated in a short length 4 of circular waveguide. A slug 6 of ferrite terminated in a conductive plate 7 is situated at the end of the guide 4, and is subjected to a magnetic field perpendicular to the direction of propagation produced by pairs of coils 8, 9. The effective permeability of the slug depends upon the angle between the direction of magnetic polarization and the direction of magnetization, being unity for a direction of polarization parallel to the magnetizing field and of some other value, dependent upon the strength of the field, for a direction of polarization at right angles to the field. By adjustment of the field this latter value may be made zero so that one of the orthogonal components of the circularly polarized wave is reflected at the face of the ferrite slug. The other orthogonal component is propagated through the ferrite and reflected at the termination 7. If the slug is made one quarter-wavelength long the two components will suffer a relative phase shift of 180 degrees and will recombine at the face of the slug to form a circularly polarized wave of sense opposite to that of the forward wave. The reflected wave is transformed to a plane-polarized wave by the plate 5 and is fed to the terminal 12 of a directional coupler 2. By means of the phase-splitting circuit shown the pairs of coils 8, 9 may be fed in phase quadrature to produce a rotating magnetic field. It may be shown that the effect of the rotating field is to shift the frequency of the propagated energy by  2n where n is the number of revolutions per second of the field.
Patent GB-513841-A (GB)
Title: Improvements relating to means for converting electric currents
IPC: H02M3/40
Filed: 1938-04-29
Abstract: 513,841. Commutator switching arrangements. NEEDHAM, W., and ROBINSON, S. April 29, 1938, No. 13039/37. [Class 38 (ii)] Means for converting AC. to D.C. or vice versa comprises a rotary commutator A and a centre-tapped transformer C wherein the D.C. connections are made between the centre-tap on the transformer and a slip ring a<1> associated with the commutator, and condensers a<3> are connected between each of the brushes a<2> associated with the commutator and the slip ring. A pair of such arrangements may be combined as shown and operate as a D.C voltage changer. Alternatively a pair of such arrangements driven at different speeds, one operating to covert A.C. to D.C., and the other operating to convert the D.C. so obtained to A.C. may be used as a frequency changer.
Patent GB-102365-A (GB)
Title: Improvements in Lids or Covers for Crucible Furnaces.
Inventor: KEITH JAMES
IPC: F27D1/18
Filed: 1916-06-22
Abstract: 102,365. Keith, J., and Keith, G. June 22, 1916. Lids and covers.-In a crucible furnace, the lid or cover is mounted so that it can be first tilted clear of the furnace tnp by a lever and cam, and then swung horizontally aside. The cover 17 is formed with a flange 18 dipping into a sand lute 16, and is loosely connected by a bolt 19 with a casting 20 pivoted at 21 to a casting 22 rotatable about the vertical spindle 22x. The cam 23 is pivoted in the casting 20 and bears against the part 22. The lever 24 serves both for tilting the cover and swinging it horizontally. When the cover is in its raised position, the bolt 19 is in tension, and the weight is taken by horizontal lugs on the casting 20. By loosening the bolt, the cover can be reversed for repairs.
Patent GB-850019-A (GB)
Title: Improvements relating to waveguide filters
Inventor: BUCKLEY GEORGE WILLIAM
IPC: H01P1/16
Filed: 1957-04-24
Abstract: 850,019. Waveguide filters. METROPOLITAN-VICKERS ELECTRICAL CO. April 24, 1958 [April 24, 1957], No. 13072/57. Class 40(8). A filter comprises an iris formed by two inductive posts A, B extending between the broad walls 3, 4 of rectangular waveguide and an array of one or more dipoles 5, 6, 7 lying parallel to and between the posts, the array combining with the posts to form an inductive screen at an unwanted frequency and to form a resonant circuit at a lower frequency. The dipoles form half-wavelength elements at the unwanted frequency which may be the frequency of a higher mode, e.g. the H 03  mode. As shown, the central dipole is slightly longer than one halfwavelength. A similar iris may be positioned at a distance from the first equal to an odd member of quarter-wavelengths at the pass frequency.
Patent GB-1383336-A (GB)
Title: Velocity adjusting system
IPC: G11B21/03
Filed: 1972-03-21
Abstract: 1383336 Supporting and moving playback heads RCA CORPORATION 21 March 1972 [22 March 1971] 13074/72 Heading G5R An error signal is developed in response to deviation of the speed of a record from a predetermined speed and causes an electromechanical transducer to move the playback head so as to counteract such deviation. As shown, in a video disc playback apparatus as described in Specification 13075/72, the playback stylus 360 is moved to oppose the effects of variations in the speed of the video record disc 300 by a moving-coil loud-speaker 200 to which are fed signals from a frequency discriminator circuit (100), Fig. 1 (not shown), which compares the frequency of television synchronizing pulses with the frequency of such pulses played back from the record disc 300.
Patent GB-102476-A (GB)
Title: Improvements in Dice.
Inventor: GARTRELL JOHN HUTCHENS
IPC: A63F9/16
Filed: 1916-09-14
Abstract: 102,476. Gartrell, J. H. Sept. 14, 1916. Dice.-Dice are constructed with central twirling-pins b and flat sides a bearing the markings.
Patent GB-1336670-A (GB)
Title: Track circuit apparatus for a railway
IPC: B61L1/18
Filed: 1971-05-04
Abstract: 1336670 Continuous rail track circuit GENERAL SIGNAL CORP 4 May 1971 [4 May 1970] 13098/71 Heading B7N A continuous-rail, alternating-current, track circuit comprises a shunt ST terminating the circuit at each of its ends, a transmitter 10 centre feeding the circuit, second and third transmitters 12 each feeding the circuit at one of its ends, a diode 13 at each end of the circuit for mixing the signal from the centre feed transmitter 10 and that from the adjacent transmitter 12 and a detector 11 at each end of the circuit tuned to respond to one of the beat signals produced by the mixer. As described the centre feed transmitter has an output signal of 200 Hz which can be shunted by a train in the mid portion R1 of the circuit and the end transmitters 12 have a frequency of 2 KHz and supply an output signal which can be shunted by a train in the end portion R2 of the circuit. Both signals must be present to produce the 1À8 KHz beat signal to which the detectors 11 respond.
Patent GB-124663-A (GB)
Title: Improvements in and relating to Billiard Cues.
Inventor: WARD WILLIAM GEORGE
IPC: A63D15/12
Filed: 1918-08-13
Abstract: 124,663. Ward, W. G. Aug. 13, 1918. Drawings to Specification. Billiards, cues for.-Relates to cues in which the tip is fixed by a screw projecting from the end of the cue. According to the present invention, the screw projects to an extent equal to or less than the thickness of a washer of wood fibre &c., secured by an adhesive to the back of the tip, and tapped to receive the screw.
Patent GB-1049452-A (GB)
Title: Improvements in and relating to knives
IPC: B26B5/00
Filed: 1965-03-29
Abstract: 1,049,452. Knives; handles. STANLEY WORKS. March 29, 1965 [May 6, 1964], No. 13195/65. Headings B4B and B4K. A knife comprises a slidably retractable blade 12 with a front edge 84 and a cutting edge 82 and score lines 86 on the side of the blade for breaking off dulled portions of the blade, and a handle with a blade receiving compartment extending from a front face 46 having converging surfaces 90, 92 the surface 90 forming a guide for severing dulled portions of the blade along the lines 86. The handle comprises complementary portions 18, 20, Fig. 2 (not shown). The blade has openings 72 one of which engages a projection 70, Fig. 6 (not shown) on a carrier 14 which is slidably mounted in the handle, the carrier being movable by means of an integral finger portion 74, which projects through an aperture 48 in the handles, between storing, scoring and changing positions and being located in each position by means of a detent 76, Fig. 6 (not shown), engaging a depression 54, Fig. 2 (not shown), the carrier being held under tension in the storing and scoring positions but being relieved from tension in the changing position for which purpose the depression 54<SP>1</SP>, Fig. 2, in this position is deeper than the depressions in the other positions. The handle has a storage compartment 98 for blades 100 which are accessible through an opening 102 which is closable by a cap 108, Fig. 7, having a resilient head portion 122 and a bifurcated leg portion 126 which assumes, under compression, a generally U-shaped configuration which facilitates the co-operation between a flange 132 on the portion 126 and a recess in a transverse wall 110 for maintaining the compartment 98 closed by hindering downward movement and preventing further upward movement of the cap 108 beyond the closed position. The downward movement of the cap is restricted by the coaction of a surface 124 of the cap and a shoulder 136 in the handle. The downward movement of the cap causes a portion 134 thereof to protrude below the bottom surface 96 of the handle thus providing a finger button to enable the cap to be returned to the closed position.
Patent GB-133218-A (GB)
IPC: E05B15/10
Abstract: 133,218. Parkes, S. R. Dec. 7, 1918. Drawings to Specification. Locks, bolts for; latches, sliding.-The head of a lock or latch bolt is pressed out from sheet steel and the hollow shell then filled with molten lead &c., the bolt bar or tail being secured to the head whilst the filling is in a molten state.
Patent GB-247050-A (GB)
Title: Improvements in the purification of gases
IPC: B01D53/46
Filed: 1925-05-21
Abstract: 247,050. Johnson, J. Y., (Badische Anilin & Soda Fabrik). May 21, 1925. Oxgenated organic compounds.-Gases such as the oxides of carbon and hydrogen intended for the catalytic production of oxygenated organic compounds are purified from iron carbonyl vapours by passing them and a body chemically reactive to iron carbonyl alternately over active absorbing material until the latter is saturated when it is revivified. Alternatively, the reactive body and the gases are passed together over the absorbent. The gases are mixed with air or hydrochloric acid gas and passed over a layer of active carbon, the iron carbonyl being decomposed into ferric oxide or chloride. The carbon is revivified by treatment with acid or by washing.
Patent GB-371176-A (GB)
Title: A process for the solidification of sodium hypochlorite solution (bleaching liquid)
IPC: C01B11/06
Filed: 1931-05-06
Abstract: Solutions of sodium hypochlorite are solidified by the addition of a small proportion (about 2-3 per cent) of saturated fatty acids (from caprylic to lauric acid).  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the addition of potassium hypochlorite to the mixture before, during or after its preparation. In this case the fatty acids may be replaced by the corresponding soaps.  This subject-matter does not appear in the Specification as accepted.ALSO:Solutions of sodium hypochlorite are solidified by the addition of a small proportion (about 2-3 per cent) of saturated fatty acids (from caproic to lauric acid).  The Specification as open to inspection under Sect. 91 (3) (a) comprises also the addition of potassium hypochlorite to the mixture before, during or after its preparation.  In this case the fatty acids may be replaced by the corresponding soaps.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1129732-A (GB)
Title: Binders for heat-resisting materials
Inventor: NEKRASOV KONSTANTIN DMITRIEVIC
IPC: C04B28/26
Filed: 1967-03-22
Abstract: 1,129,732. Cellular concrete. NAUCHNOISSLEDOVATELSKY INSTITUT BETONA I ZHELEZOBETONA. 22 March, 1967, No. 13453/67. Heading C1H. [Also in Division C3] A binder for heat-resistant materials, e.g. asbestos contains dicalcium silicate, and 20-70 wt. per cent crushed soluble glass (non-hydrated sodium silicate). The dicalcium silicate may be nepheline slurry, Portland cement or friable slag. For an aerated concrete fine diamotte, chamotte sand, NaOH, Al powder, aqueous soluble glass solution and water are added.
Patent GB-794514-A (GB)
Title: Solid oil-containing compositions
Inventor: SCHRAM CORNELIUS JOHN
IPC: C09K23/00
Filed: 1955-05-10
Abstract: A process of preparing a solid composition containing a major proportion of an animal, vegetable or mineral oil, fat, grease or wax, including petroleum jelly, comprises forming an emulsion of the oil, fat, or wax with a water-soluble polyuronide such as an alginate, a pectate or a vegetable gum, and then converting the emulsion to a solid by drying or precipitating.  The oil content of the emulsion should be more than 85 per cent by weight of the ingredients present, other than water, and should preferably constitute 90-95 per cent.  An emulsifying agent such as methyl ethyl cellulose or glyceryl monostearate should desirably also be included in the emulsion to the extent of a few per cent.  The emulsion may suitably be dried by spraying, in which case a soluble salt is formed, or precipitated by extruding into calcium chloride, when an insoluble salt is obtained.  The products may be produced in the form of sheets, ribbons, filaments, globules, granules or powders.  They find application as lubricating compositions and, in the case where edible oils are used, are said to be particularly useful for the lubrication of food machinery.ALSO:Solid products containing a major proportion of an edible animal or vegetable oil or fat are made by forming an emulsion of the oil or fat with a water-soluble polyuronide such as an alginate, a pectate or a vegetable gum, and converting the emulsion to a solid by drying or precipitating.  The fat content of the emulsion should be more than 85 per cent by weight of the ingredients other than water, preferably 90-95 per cent.  An emulsifying agent such as methyl ethyl cellulose or glyceryl monostearate should desirably also be included in the emulsion to the extent of a few per cent.  The emulsion may be spray dried or may be precipitated by extruding into calcium chloride solution. Products of the latter procedure may be incorporated in synthetic meat products. According to the Provisional Specification, the products find application in dry soup or cake mixes and in the manufacture of confectionery.
Patent GB-135050-A (GB)
IPC: F16C1/08
Abstract: 135,050. Clifford, W. H. Jan. 28, 1919. Shafts; shaft coupling8. -The couplings for connecting a flexible shaft to the driver and to a tool are so constructed that the tool can be coupled directly to the driver. A sleeve 6 on the end of the driving-shaft 1 rotates in a bearing 2 with a ball thrust bearing 7. The end piece 4 of the casing of the flexible shaft 5 is attached to the bearing 2. A spindle 8 secured to the end of the shaft 5 takes into the sleeve 6 and a projection 10 on the spindle engages a groove in the end of the shaft. 1. A set-screw 13 is provided to retain the parts in connexion. The tail piece of the tool is made to correspond to the spindle 8, end the outer coupling on the shaft corresponds to the driver coupling, the end piece for the shaft casing forming a tubular handle.
Patent GB-721105-A (GB)
Title: Improvements in or relating to circuits for use in frequency-shift telegraphy transmitters
IPC: H03C3/10
Filed: 1953-05-14
Abstract: 721,105. Frequency modulation. PHILIPS ELECTRICAL INDUSTRIES, Ltd. May 14, 1953 [May 17, 1952], No. 13523/53. Class 40 (5). In a frequency-shift telegraph system, the oscillatory circuit of the valve generator is associated with a shunt impedance which is connected in the grid-cathode circuit of a cathode-follower keying valve, in such manner that when the keying valve is blocked, the shunt impedance is in circuit, but when that valve is conductive the shunt impedance assumes a very high value and has effectively no influence on the tuning of the oscillatory circuit. As shown, the shunt impedance comprises capacities 3 and inductor 4 connected across a condenser 13 in the tuned circuit 2 of the backcoupled oscillator valve 1. The impedance 3, 4 is connected on one side to the control grid of the keying valve 18, and on the other side to a variable tapping on the cathode resistor 20. The anode of the valve 18 feeds oscillatory voltage to an amplifier 24 whose anode is coupled to the cathode of the valve 18 so as to increase the oscillatory current through the cathode resistor 20. Signal pulses from the source 5 are amplified by the valve 21 and applied to the screen of the valve 18 to block and unblock that valve alternately. When the valve 18 is blocked, the impedance 3, 4 is a simple shunt across the condenser 13. When, however; the valve is conductive, its cathode follower action gives the impedance 3, 4 a very high value as seen from the tuned circuit 2. The frequency generated thus alternates between two adjacent values. The mean frequency of the oscillator may be adjustable between 300 and 350 kc/s, and the frequency shift may be adjusted between 0 and 1 kc/s by moving the tap on the resistor 20. If the resonance frequency of the impedance 3, 4 is about #3 times the central frequency of the oscillator tuning range, the frequency shift remains substantially constant within that range. The output of the oscillator 1 may be amplified in the tube 6 and fed to a modulator 8 to which a carrier wave source 9 is connected; and the oscillator grid may be biased by rectifying at 15 the output of the amplifier 6. The tuned-circuit oscillator 1, 2 may be replaced by an R.C. oscillator, and in this case the impedance 3, 4 is replaced by a resistor.
Patent GB-973170-A (GB)
Title: Automatic machine control system
IPC: G05B19/27
Filed: 1962-04-09
Abstract: 973,170. Programmed control of machine tools. G. L. GOUGH. April 9, 1962 [May 24, 1961], No. 13526/62. Heading G3N. A Bandot-coded punched tape is stepped by a clutch having a magnet 50 and the rows of perforations are sensed by make-contacts 61-65 connecting a positive supply 76 through lines 71-75 to a converter 16 adapted to receive the fire permutative electrical impulses and translate them into thirty-two outputs which are fed to a control circuit 18 connected to X and Y axis commutators 39, 49 and axis motors 32, 34 for positioning a worktable 30 of a drilling machine 20. The X-axis commutator 39 and motor 32 are connected, Fig. 2, by a feed-screw 36. The commutator comprises inner sections, equal in number to the smaller of the two factors of the number of increments into which a full rotation of the commutator is to be divided, and outer pairs of segments equal to the larger factor. For incremental operation, the appropriate commutator segment and sector is selected by the control circuit in response to signals from the convector and the motor rotates until a wiper arm 38 links them. The clutch 50 is then energized to step the tape for the next operation. For travel over a plurality of complete revolutions a clock-wise or counter-clockwise segment is selected by the control circuit and the tape moved one step for each revolution until a change in operation is programmed on the tape. The converter 16 and control unit 18 respond to programmes for independent movement along X or Y axis, simultaneous movement along X and Y axes, time delay for manual operation and automatic actuation of a work-tool 22; the tape being stepped by a limit-switch on the machine. A plug-board arrangement, Figs. 12 to 16, not shown, permits insertion of additional operations and read-out or copying of the programme. U.S.A. Specifications 1,884,743, 1, 904, 164, 2,296,845, 2,782,348 and 2,838,967 are referred to.
Patent GB-763280-A (GB)
Title: Improvements in or relating to benches and like work tables
Inventor: SHANDON ERNEST ROBERT
IPC: B23Q1/74
Filed: 1954-05-10
Abstract: 763,280. Work benches. SHANDON & CO.; Ltd., E. R. April 25, 1955 [May 10, 1954], No. 13544/54. Class 61. A mobile extension platform 1 has one side edge slidably secured to the side edge of a bench or like work table 2, the opposite side 1b being supported by adjustable legs 4. Hollow rail members 9, 10 are secured to the adjoining edges of the plantform and work table respectively, each rail having a longitudinal slit in the outwardly directed rail face, wherein dogs 11 having shanks 12 carried by the platform and extending through the slit platform rail face are arranged to enter the hollow bench rail 10 through the slit face and engage in the rail 10 by angular displacement after entry. Each dog shank 12 is surrounded immediately behind the dog 11 by a roller which is arranged to ride on the lips of the :rail slits. The inner end of each dog shank 12 extends through an aperture in the face of the platform rail 9 and enters a collar 14 contained in a recess 13 in the platform, the collar and shank being held against relative axial displacement by a radial handle 15 which projects through a slot in the platform and is angularly displaceable to rotate the dog between an entry position and a retained engaging position. The platform is locked against sliding movement by a bolt carried on the undersurface of the platform and arranged to engage under the bench. The platform has a hinged extension flap 7.
Patent GB-1071172-A (GB)
Title: Improvements relating to bearing assemblies
Inventor: SHINGLER ROY
IPC: F16C33/58
Filed: 1963-04-05
Abstract: 1,071,172. Bearings. GEO. H. HUGHES Ltd. April 2, 1964 [April 5, 1963], No.13552/63. Heading F2A. A ball or roller bearing assembly for a wheel (1), Fig. 1 (not shown), has an outer race constituted by an annular disc or so-called washer (9), Fig. 2 (not shown), and a cup-shaped metal pressing (10) held together by a further cupshaped metal pressing (13) with a flange (16) folded into abutment with the disc (9).
Patent GB-572407-A (GB)
Title: Improvements in or relating to the manufacture of arsenic
IPC: C22B30/04
Filed: 1940-08-28
Abstract: 572,407. Arsenic. LOWES, A. P., WATSON, J., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Aug. 28,1940, No. 13562. [Class 82 (i)] Arsenic is precipitated from an aqueous solution of an arsenious compound by means of an alkali metal amalgam, containing for example 0.2-0.3 per cent of sodium, the solution being during at least the greater part of the reaction either strongly acid or strongly alkaline, for example with a pH value greater than 12. The process may be carried out in a continuous manner by passing the solution and amalgam in contact either in countercurrent or otherwise.