baber/WOPTO huggingface dataset:
Patent GB-845847-A (GB)
Title: Radio diversity receiving system
IPC: H04B7/12
Filed: 1959-02-20
Abstract: 845,847. Radio recording systems. STANDARD TELEPHONES & CABLES Ltd. Feb. 20, 1959 [Feb. 21, 1958], No. 5934/59. Addition to 810,698. Class 40(5). A diversity system of the kind described in the parent Specification in which the signals of the same frequency are received by two spaced diversity aerials and combined in the same phase before demodulation, is modified to provide for signals of different radio frequency, by having two tuned frequency selective channels and means to change the signal frequencies to the same frequency before combining. In addition, each selective means directs the selected signal to the corresponding frequency changer. In the embodiment described two frequencies fA fB received by aerials 14, 15 (Fig. 1) are applied to selective tuned circuits 20, 23, and frequency changes 21, 22, 24, 25, the signals applied to transmission lines 3, 4 having the same frequency f The remainder of the circuit is the same as disclosed in the parent Specification. The signals f A  f B  at the outputs of the tuned circuits vary continuously in phase due to fading and since one of the minor outputs is amplitude modulated at the frequency of source 6, then after combination in circuit 7 a phase modulated combined signal will be produced except when the phase difference between the two signals has been adjusted to 0 or 180 degrees. If the receiver is to be used in a time diversity system, a delay circuit 26 is switchedwith circuit to make signals f A  f B  time coincident in a second embodiment (not shown) a phase or frequency modulator is employed instead of an amplitude modulation, as described in the parent Specification. A third embodiment (not shown) employs a phase adjustable, local oscillator in the frequency change circuit of one channel in place of the local oscillator 25 Fig. 1. A fourth embodiment is the same except for the generating means which is described in the parent Specification.
Patent GB-199075-A (GB)
Title: Improvements in driving mechanism for lathes or other machine tools
IPC: B23Q5/00
Filed: 1922-02-28
Abstract: 199,075. Marks, E. C. R., (Hendey Machine Co.). Feb. 28, 1922. Lathes.-The spindle 12 of a lathe or other machine-tool is driven through a belt 18 from a pulley 19 mounted on a shaft 20 having bearings in a change-speed gear-box 21 supported on trunnions in the base 11. The trunnions are concentric with a driving shaft 23 connected by change gears to the shaft 20 and driven either from a pulley 24 or through gearing 26 and clutchmechanism from an electric motor 27. The gear box may be angularly adjusted to vary the belt-tension by means of bolts 31, 35. The base 11 is provided with a removable side section 36, and a bar 40 may be temporarily supported on projections 39. 41 so as to facilitate removal of the gear box. In a modification, the gear box is replaced by a variable-speed motor geared to the pulley drawing the belt 18 and mounted on a pivoted platform adjustable by screws to vary the belt tension. In a further modification, Fig. 5, the belt tension is produced by the weight of the gear box, the downward movement being limited by bolts 60. A bolt 61 pivoted to the gear box is secured to a treadle 63 which may be operated to engage a latch 65 to relieve the belt-tension when the machine is idle.
Patent GB-1376249-A (GB)
Title: Internally-meshing gear type fluid motor
IPC: F01C1/10
Filed: 1972-02-09
Abstract: 1376249 Rotary positive - displacement machines INSTITUT ELEKTROSVARKI IMENI E O PATONA AKADEMII NAUK UKRAINSKOI SSR 9 Feb 1972 6005/72 Heading F1F In an internally-meshing gear motor an externally-toothed gear c is revolved in a planetary manner by the working fluid and connected to the output shaft 3 through speed-reducing internallymeshing gears a, d. The gear c is united with the gear d and co-operates with a gear b formed in a housing 1. High and low pressure zones A, B are separated by a tongue 13 on a rotary carrier for the gears c, d and communicate with inlet and outlet chambers 11, 12 through ports 20, 21 and inter-tooth slots 22. A second embodiment, Figs. 4 and 5 (not shown), differs in that the tongue is omitted.
Patent GB-1035775-A (GB)
Title: New azo dyestuffs and processes for the preparation thereof
Inventor: SUREAU ROBERT FREDERIC MICHEL
IPC: C09B29/00
Filed: 1963-02-15
Abstract: The invention comprises basic azo dyes of the general formula <FORM:1035775/C4-C5/1> in which Y represents the residue of a coupling compound free from sulphonic acid and carboxylic acid groups and A represents a monovalent anion.  Such dyes are prepared by (a) diazotizing a 1,2-dialkyl-6-amino-indazolium salt of the general formula <FORM:1035775/C4-C5/2> where A represents a monovalent anion and coupling the diazo derivative thus obtained with a coupling compound free from sulphonic acid and carboxylic acid groups or (b) coupling the diazo compound of 6-amino-indazole or its 1- or 2-alkyl derivatives with a coupling compound free from sulphonic acid or carboxylic acid groups and treating the azo dyestuff obtained with an alkylating agent.  In examples: An orange dye for acrylonitrile polymers is obtained by diazotizing 1,2-dimethyl - 6 - amino - indazolium hydrochloride and coupling with N-dimethyl aniline and isolating the product as a complex with zinc chloride (1) and the same dye is obtained by coupling diazotized 6-amino-indazole with N-dimethylaniline and heating the product dimethyl sulphate and isolating the product as a complex with zinc chloride.  Many additional coupling components, e.g. resorcinol, pyrazolones and 3-hydroxydiphenyl-amine, are specified.
Patent GB-1260212-A (GB)
Title: An arrangement for controlling self-propelled cars in a conveyor system
Inventor: HEIZ MAX
IPC: B61L23/00
Filed: 1969-02-05
Abstract: 1,260,212. Vehicle control system. SPRECHER & SCHUH A.G. 5 Feb., 1969 [3 April, 1968], No. 6221/69. Heading B7N.  In a control arrangement for self propelled rail-cars 4 moving on track 1, each station 3a, 3b &c., positioned adjacent the track is provided with an addressing magnetic transmitter 8a, 8b &c., which co-operates with a receiver 5 on a vehicle to set up'the vehicle's address in a magnetic transmitter 6 on the vehicle which is read by receivers 7a, 7b &c., at the stations and at points control receivers 9 in advance of points positions 2. Electromagnets 11 in stationary transmitter 8 are selectively energized to define in code form the address to be marked on the vehicle, e.g. magnet 11b only energized. This is read by the receiving array 13 of reed switches forming the vehicle receiver 5 and via relays 18 and their contacts 17 the transmitter 6, comprising electromagnets 12, is energized and retained energized in accordance with the required address. The information stored in the transmitter 6 is subsequently read at stations and points control points by receivers 7 also formed by reed switches. When the information stored corresponds to a station address the vehicle is stopped. Operation of transmit magnet 11a at a station restores all the vehicle address magnets to their de-energized positions which may be used to signal the address of a loading station, e.g. 3a.
Patent GB-1183931-A (GB)
Title: Serial Number Printing Machines
Inventor: WYBROW PATRICK STANLEY
IPC: G06F11/08
Filed: 1966-02-11
Abstract: 1,183,931. Numbering apparatus. P. S. WYBROW and P. MUZLISH. 11 May, 1967 [11 Feb., 1966], No. 6238/66. Heading B6C. [Also in Division G4] A serial number printing machine comprises apparatus for printing a random check digit, which is computed by stepping a cyclic counter a number of times according to the highest order of the serial number which is advanced. Decimal counters 10<SP>0</SP>-10<SP>5</SP> advance with the printing wheels and display on neon tubes C<SP>0</SP>-C<SP>5</SP>. Advance of the units digit only opens gate G 0 , which through OR gate H opens gate I. Pulses from J are then passed via M to the random check printer, via N to a random check display N, and also to a binary counter O. The output from O is converted to markings on leads Q 1 -Q 9 , a selection of which are strapped to reset gates G 0 -G 5 . As shown, advance of the units digit steps the check digit three times before Go is restored. The tens digit advances the check digit five times, and so on. The higher denominations take precedence by being subject to less delay and disabling all lower gates in the sequence C 5 -G 0
Patent GB-558657-A (GB)
Title: Improvements in lenses
IPC: G02B3/04
Filed: 1942-05-08
Abstract: 558,657. Lenses. BURCH, C. R., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. May 8, 1942, No. 6282. [Class 97 (i)] A singlet lens is rendered substantially anastigmatic, and is corrected for spherical aberration and coma, by constructing it in accordance with the equation and by aspherising one or both surfaces, L being the distance in the medium of the. lens at which the image formed by the front surface is spaced from the surface, N and N<SP>1</SP> being the refractive indices respectively of the medium in which the lens is inserted and of the lens material, and the other symbols having the significances shown on the drawing. The thickness d may vary within + 10 per cent of that determined by the equation, the field may be flattened by making R equal to r, N' may be made equal to ¢( + #/s), and the distance D of the diaphragm from the pole of the front surface may be equal to
Patent GB-1410632-A (GB)
Title: Antennas with dish reflectors
IPC: H01Q19/19
Filed: 1972-02-10
Abstract: 1410632 Aerials C & S ANTENNAS Ltd 10 May 1973 [10 Feb 1972] 6334/72 Heading H4A [Also in Division B3] In an aerial of the kind in which a secondary reflector faces a main reflector, any manufacturing distortions from a predetermined geometrical form which are present in the surface of the main reflector are at least partially compensated for by providing complementary distortions in the surface of the secondary reflector. As described, an aerial comprises a primary horn radiator 3, a hyperboloidal secondary reflector 4, and a paraboloidal main reflector 1. A structure 2 supports the horn and the main reflector, and arms 5 extending therefrom support the secondary reflector. The difference between the actual shape of the main reflector 1 and a true paraboloid is determined by measurements made, for example, by vernier or micrometer probes, or by a laser range-finding technique. Knowing the errors in the shape of the main reflector, a complementary shape for the secondary reflector may be computed, preferably digitally, using either ray tracing geometrical optical theory, or wave theory. In many cases distortion of the main reflector is circularly symmetrical, so that the surface of the secondary reflector may be shaped in a turning operation. Alternatively, the secondary reflector may be machined utilizing a machine tool with three-axis numerical control, e.g. some form of erosion machining tool.
Patent GB-351979-A (GB)
Title: Improvements in or relating to haulage winches
IPC: B66D1/74
Filed: 1930-02-26
Abstract: 351,979. Haulage-gear for use in mines. HEATHCOTE, C. A., 25, The Park, Mansfield, Nottinghamshire, and SHEEPBRIDGE COAL & IRON CO., Ltd., Sheepbridge Works, Chesterfield, Derbyshire. Feb. 26, 1930, No. 6338. [Class 78 (v).] A winch for hauling a pan or scraper to and fro along the working face in a mine comprises coaxial drums 1, 1a for the head and tail ropes, or for the two runs of an endless rope 14, each drum in turn being clutched automatically to the driving-shaft 2 when the pan or scraper reaches one or other end of its travel. The shaft 2 is driven by a motor 4 through the gear-box 3. Clutch elements 5, 5a on the drums are engaged in turn by a sliding clutch member 6 on the shaft. The member 6 is thrown over by arms 7 actuated by a pair of bell cranks 11 engaged by stops 13 on the rope. The rope passes freely through the vertical arms of the bell cranks 11, and the stops 13 engage the arms through cushioning springs 15. A hand-lever 17 is provided for independent control of the clutches. The end pulley 18 for the endless rope is mounted on a bracket 19 on the bedplate 20, on an inclined axis as shown. In a modification (Figs. 3 and 4, not shown) the gear-box is between the drums, two separate clutches being provided. For main and tail haulage, the pulley 18 is dispensed with, and the drums 1, la hold sufficient rope for the length of the road and are provided with brake gear.
Patent GB-223490-A (GB)
Title: Striking mechanism for clocks and the like
IPC: G04B21/12
Filed: 1924-03-12
Abstract: 223,490. Perrin, H. Sandoz-. Dec. 19, 1923, [Convention date]. Striking-mechanism; framework. - The striking-mechanism for the hours and quarters is released by one hammer d which removes the pawl f from the hour-rack e starting the hourstriking mechanism in known manner. When the rack e comes to its position of rest by its impetus the lever h and pawl k of the quarterstriking rack are actuated and the quarter striking as determined by the cam a follows. To cause a repeat striking the lever m may be actuated against its spring to free the pawl f, and to prevent striking it is moved into the position shown where it stops the hammer d. The movement is mounted on three plates A<1>, A<2>, A<3> covering respectively the hour-striking mechanism, the clockwork, and the quarterstriking mechanism.
Patent GB-941451-A (GB)
Title: Spacing aid for composing textual matter
IPC: B44C1/16
Filed: 1960-02-23
Abstract: 941,451. Photographic type-composing. ARTYPE Inc. Feb. 23, 1960 [March 31, 1959], No. 6410/60. Heading B6W. [Also in Division B8] A flexible transparent sheet of cellulose acetate or the like has formed thereon characters of various configurations, indicia marks on each lateral side of the said characters, and an adhesive backing, so that when character bearing portions of the sheet are severed therefrom for adhering one after another to a layout surface to form groups of such characters, the indicia marks, which are spaced relative to the characters according to the form thereof serve to enable suitable and uniform spacings of the characters in the said groups to be obtained. As shown (Fig. 1) a sheet 22 of flexible transparent material has letters or other characters 26, indicia marks 30 and a continuous guide line 28 printed preferably on its underside, and has a coating, also on its underside, of a wax-like pressure sensitive adhesive. To form words or other groups of characters on a layout surface such as 36 (Fig. 3), character bearing portions such as 34 (Fig. 1) are severed from the sheet for example by means of a stylus, are applied to the layout 36 so that the portions of line 28 carried thereby coincide with a blue (photographically non-reproducible) line 32 drawn on the layout surface, and are positioned so that successive marks 30 coincide. Alternatively, the marks 30 may be all overlapped or all separated to attain different spacing effects within the groups. After the characters have been burnished into place, the indicia marks and portions of line 28 are cut away and the layout may then be photographed for making a plate for printing multiple copies or used in displays without reproduction. Other types of marks 30 are described. The marks may, for example, be formed as vertically spaced arrows the tips of which are to be aligned, or one of the two marks for each character may have a small horizontal guide bar or scale portion with part of which the other vertical mark is to be aligned -cf. Fig. 18 (not shown)-or the marks may be formed as slots or perforations in the sheet 22.
Patent GB-947750-A (GB)
Title: A pivot bearing for windows, doors or similar articles
IPC: E05D7/08
Filed: 1962-02-20
Abstract: 947,750. Hinges and pivots. S. U. E. FLODELL. Feb. 20, 1962 [Jan. 30,1962], No. 6440/62. Heading E2F. A pivot bearing for windows or the like comprises a bearing housing 1 adapted to be attached to the window frame or sash and a bearing portion rotatable under friction in the housing, the bearing portion having a non- circular spigot 22 enclosed in a socket comprising two separable parts 23, 26 adapted to clamp the spigot and to be attached to the sash or the frame. The bearing portion comprises two members 10, 11 non-rotatably connected by a spigot and socket connection 14, 15 and pressed against complementary. conical surfaces 8, 9 in the housing 1 by a clamping screw 17 adjustable through a hole 34 provided in an end gable 33 of the socket part 23. A lubricantimpregnated felt ring is preferably located between the members 10, 11.
Patent GB-790490-A (GB)
Title: Improvements in or relating to the insulation of ducting or like conduits
IPC: F16L59/12
Filed: 1955-03-05
Abstract: 790,490. Insulating pipes. KENYON & SONS, Ltd., W., and JEPSON, J. L. June 5, 1956 [March 5, 1955], No. 6535/55. Class 99(2). A metal envelope 12 holding insulating material 11 in place on a duct 10 is supported on plates 18 carried by studs 14 secured to the duct, a layer 17 of heat insulating material being interposed between the plates 18 and the studs 14. The envelope 12 is formed from steel sheets the overlapped ends of which are secured to the plates 18 by self-tapping screws 19. The studs 14 are welded to the duct 10, which is of rectangular section, and each plate 18, insulating layer 17 and support plate 16 are attached to its stud by a screw 15. The end of each sheet 12 is provided with a recess 13 in which may be positioned a sealing ring 20, Fig. 3; alternatively or additionally a sealing tape or compound 20a may be used between the overlapped ends of the sheets 12. The insulating material 11 may be fibre glass, mineral wool or slag wool.
Patent GB-1402486-A (GB)
Title: Battery connecting structure for portable device
IPC: H04B1/38
Filed: 1973-02-09
Abstract: 1402486 Battery housing for portable equipment MOTOROLA Inc 9 Feb 1973 [2 March 1972] 6540/73 Heading H1B [Also in Division H3] The lower part of the housing of a portable transceiver forms a compartment for either a primary or a rechargeable battery. Metallic strip connectors in the compartment are secured to the plastics wall by ultrasonically riveted or staked-over studs extending from the wall through holes in the strips. The contact arrangements for primary and rechargeable batteries differ. With a primary battery, its negative terminal is contacted by resilient tongue 26 of a strip 25, from the upper end 34 of which the radio supply is taken. The battery's positive terminal is contacted by a tongue 46 on a strip 44 which overlies and is insulated from a strip 40. The radio chassis positive supply is taken from the upper end 48 of strip 44. With a rechargeable battery, the negative contact arrangement is the same, but the battery's positive terminal is extended and bridges tongues 46 and 52 on strips 44 and 50. This enables the battery to be recharged (with the housing closed) via downward extensions of strips 25 and 40 which pass through the housing wall and are hooked over in recesses (Figs. 5, 6, not shown) on the outer surface. The radio may be positioned under its own weight in a charger with suitable resilient contacts. The battery is charged through a path including diode rectifier 42 to ensure that accidental short-circuiting of the charging contacts in normal use of the radio would not discharge the battery. A further strip 35 with a tongue 36 and an external charger contact links a thermistor in the rechargeable battery with a control circuit in the battery charger to regulate charging. The use of nickelcadmium rechargeable cells and mercury primary cells is suggested.
Patent GB-1021892-A (GB)
Title: Improvements in and relating to motor control circuits
Inventor: BOND HAROLD WILLIAM
IPC: H02P7/29
Filed: 1962-02-20
Abstract: 1,021,892. Control of D.C. motors. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Feb. 15, 1963 [Feb. 20, 1962], No. 6579/62. Heading H2J. A reversible D.C. motor 1 is energized from oppositely-poled sources 2, 3, through transistors 4, 5, whose bases are supplied with variable width pulses which are mutually phase-displaced by 180 degrees. Triangular voltage waves with variable direct voltages superimposed thereon may be supplied to the bases of the transistors whereby the effective widths of the pulses are simultaneously and oppositely controllable. Rectifiers 8, 10 and 9, 11, protect the transistors against inductive surges. The sources 2, 3, may comprise rectifiers supplied from a three-phase source. When identical small triangular peaks of both waves are applied to the bases, the motor is vibrated to reduce friction so that the motor readily responds to speed control by varying the peaks in opposite senses.
Patent GB-292212-A (GB)
Title: Apparatus for the elementary teaching of music
IPC: G09B15/02
Filed: 1927-03-10
Abstract: 292,212. Houghton, W. E. March 10, 1927. Teaching music.-In an apparatus for teaching music of the kind comprising a grooved board and a series of blocks bearing musical notes, signs &c. the board is formed of two plies of wood A, B, the front ply B having a series of rectangular and symmetrically arranged recesses cut therefrom to receive the blocks, Fig. 3. The latter are of various widths but are all of a height to fit the recesses. The rear ply A is formed with slots A<1> to facilitate removal of the blocks. The board also has a removable stud C bearing, for example, a " time " figure, or the stud may be revoluble and have several markings adapted to show through an aperture in the front ply B. The board itself may have fixed or variable markings having relation to the matter shown on the blocks. Reference has been directed by the Comptroller to Specifications 5902/98 and 13653/10.
Patent GB-883948-A (GB)
Title: Improvements relating to ventilators
IPC: E04D13/03
Filed: 1960-02-26
Abstract: 883,948. Ventilators; skylights. GREENWOOD'S & AIRVAC VENTILATING CO. Ltd., and HUGHES, B. D. Feb. 26, 1960 [Feb. 26, 1959; March 3, 1959], No. 6686/59. Classes 20(3) and 137 A roof ventilator and skylight for a flat roof comprises a box-like member having side walls 6, 7, 8 which support a glazing 11, and a fourth wall 9 which stops short of the glazing to leave a ventilator opening which is weathered by a hood 10 supported by side walls 6, 7. The opening is controlled by a pivoted flap 13. The box-like member is supported on a base 1 fitting over a curb 2 formed around the roof opening. In a modification the roof opening is lined throughout its height and this lining supports the box-like member. Clips 12 formed integral with the walls hold the glazing in place.
Patent GB-286312-A (GB)
Title: Improvements relating to speed changing gear
IPC: F16H3/02
Filed: 1928-03-03
Abstract: 286,312. Kronenberg, M. March 4, 1927, [Convention date]. Void [Published under Sect. 91 of the Acts]. Drawings to Specification. Variable-speed gearing.-The Specification as open to inspection under Sect. 91 (3) (a) comprises variable-speed gearing having stepped ratios designed so that ratios ascend in logarithmic progression instead of in geometric progression. In other words, the ratio of consecutive speeds increases with the speed. Types of gearing mentioned are stepped pulley gearing, sliding-wheel gearing, and clutch gearing application is mentioned, to machine tools, especially lathes. This subject-matter does not appear in the Specification as accepted.