baber/WOPTO huggingface dataset:
Patent GB-1528284-A (GB)
Title: Radio receivers
IPC: H03H11/24
Filed: 1976-03-31
Abstract: 1528284 Gain control SONY CORP 31 March 1976 [9 April 1975] 13038/76 Heading H3T In a radio receiver having an r.f. stage 1 and an i.f. mixer and amplifier stage 2, gain control is provided by an attenuator comprising a plurality of series resistors 84, 85 and a plurality of variable shunt impedances 81, 82, 83 controlled by the a.g. c. signal. A further resistor may be connected between the tuning coil 12 and the collector of transistor 81. The mixer and amplifier stage may comprise a push pull amplifier 21, 22 with the signal from local oscillator 3 superimposed on the constant current source 23, 24, 27-27D. The i.f. signal is filtered by a ceramic filter 42 and detected at 5. The a.g.c. signal is derived from the a.f. signal by a low pass filter 6. In a modification, Fig. 2 (not shown) the winding 12B is formed by a tapping on coil 12A.
Patent GB-678862-A (GB)
Title: Improvements in or relating to machines for trimming hedges
Inventor: BAKER JAMES REUBEN JOHN
IPC: A01G3/04
Filed: 1950-05-24
Abstract: 678,862. Hedge-trimming machines. BAKER & HUNT, Ltd. May 21,1951 [May 24,1950], No. 13049/50. Class 6(ii) In hedge-trimming machines in which a wheeled frame 11, 12 supports a transverse arm 37 to which the cutter is attached, the height of the cutter is varied by a cable 53 passing over pulleys to a winch 54. A sleeve 44 on the arm 37 slides on a vertical post 28. The machine may be guided by a walking operator, or pivotally attached to the front of a tractor. A caster 15 then supports the front of the frame. An L-shaped auxiliary frame is mounted on the main frame and carries discs 24 on a vertical axle 23. The discs are spring-biassed to a position in which the cutter-arm, which is pivoted to the auxiliary frame, is at right-angles to the direction of machine movement. An internal combustion engine 26 is mounted on the arm of the L-frame, and thus projects in the opposite direction to the cutter arm. It transmits its drive through pulleys 34, 32 and a belt 33 to a shaft 31 which passes through the pedestal 30 and is universally connected to the cutter-driving shaft 36 rotating within the arm 37. Specification 479,351 is referred to.
Patent GB-988427-A (GB)
Title: Improvements in and relating to ceiling structure
Inventor: FRANCE THOMAS
IPC: E04B9/24
Filed: 1962-04-04
Abstract: 988,427. Suspended ceilings. BRITISH INDUSTRIAL PLASTICS Ltd. March 22, 1963 [April 4, 1962], No. 13049/62. Heading E1V. A ceiling comprises one or more self supporting resiliently pliable panels 30 supported from flanged beams 20, 40 by strips 32 having first grooves engaged by the edges 31 of the panel and second grooves 5 engaging the flanges of the beams 20, 40. The strip may be extruded from synthetic resin and is chamfered to match adjoining acoustic panels 21 similarly engaged with beam flanges; edge strips 34 may have their second groove portions omitted. The panels 30 may be transparent, translucent or perforated and be of fibre reinforced synthetic resin or metal.
Patent GB-611463-A (GB)
Title: Improvements in and relating to cloches
IPC: A01G13/04
Filed: 1946-05-01
Abstract: 611,463. Horticultural cloches. GELL, H. May 1, 1946, No. 13153. Addition to 568,096. [Class 20 (i) ] . The stem member 10 of the Y-linkage carrying one of the upper panels 2 in the parent Specification is replaced by an inverted V-linkage, 11, one limb A of which engages the remaining inverted V-part 9 of the Y-linkage of one panel whilst the other limb B engages a selected one of a number of eyes 12 in the stem-member 10 of the Y-linkage of the other panel, the panels thereby being adjustable from fully shut to fully open position with intermediate settings. A hand-grip 16 is formed in the linkage 11 at the junction of the arms A, B.
Patent GB-623837-A (GB)
Title: Improvements in or relating to photographic contact copying machines
IPC: G03B27/22
Filed: 1947-05-15
Abstract: 623,837. Photographic printing apparatus. HOLDEN, J. May 15, 1947, No. 13159. [Class 98 (ii)] A photographic contact copying machine comprises a lamp casing 1 having an internal light source, a transparent upper wall 2, a container 12 mounted at one side of the casing from which sensitized sheet material may be drawn and placed on the upper wall 2 together with material to be copied, and a dark cover such as a roller blind 22, mounted at the other side of the casing so that it may be drawn over the copy material and held in place as by studs 25a. Lamps 3 may be carried by a rotatable support 4 controllable by an external handle 8 so as to place a semi-cylindrical filter 5 between the lamps and the upper wall 2, as shown, and a curved diffusing screen 9 may be provided also. The container 12 for the sensitized material comprises an opaque cylinder with ends 13 and sides with overlapping edges to form a light-tight slot 14 for withdrawal of sensitized material 15, and this container may be mounted in a dark compartment 11 by a spring clip 18 inside a hinged panel 17 forming part of the wall of the casing 1.
Patent GB-514390-A (GB)
Title: Improvements in or relating to aerial systems
IPC: H01Q11/06
Filed: 1938-05-04
Abstract: 514,390. Aerials. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. May 4, 1938, No. 13237. Convention date, May 4, 1937. [Class 40 (v)] In an aerial system for transmission or reception comprising a wave aerial, particularly a "rhombic" or V aerial, the dissipation of energy in the terminating impedance is avoided by connecting the normally terminated end of the aerial to the transmitter (or receiver) end through a path independent of the aerial so that energy which has traversed the aerial is-returned to the transmitter end in additive phase. The rhombic aerial 1, 2 shown is fed from the transmitter 5 through transmission line 10, coupling 4, and transmission line 3. Energy traverses the aerial and is fed back in additive phase through transmission line 6, coupling 4, and transmission line 3. The phase is adjusted by the phase shifters 7 and 9 or by adjusting the length of the transmission line 6. Correct matching, to avoid the setting up of stationary waves, is obtained by means of the transformer 8 or the coupling 4.
Patent GB-655724-A (GB)
Title: Thermionic reactor valves
Inventor: BAGLEY JAMES HAROLD
IPC: H01J25/06
Filed: 1948-05-14
Abstract: 655,724. Frequency modulation. NATIONAL RESEARCH DEVELOPMENT CORPORATION. May 14, 1948, No. 13242. [Class 40 (v)] [Also in Group XL (a)] An oscillating Heil tube 1 is coupled to a resonant cavity 3 which is tuned by a non- oscillating Heil tube 6 which is operated in a S2n mode and used as a variable reactance. The output is taken from a pick-up loop 4 and fed to a coaxial line 5. A Heil tube is a velocity modulation valve wherein an electron beam is projected across a coaxial line which provides a buncher gap, a drift space, and a catcher gap; it has an output probe which is an extension of the inner conductor of the line. A Sn mode is one in which the length of the drift space is n# # - where - is the distance between successive 4 2 bunches of electrons.
Patent GB-548160-A (GB)
Title: Improvements in or relating to stereoscopes
IPC: G02B27/22
Filed: 1941-10-16
Abstract: 548,160. Stereoscopes. MAINARDI, P., and MAINARDI, M. N. Oct. 16, 1941, No. 13350. Convention date, May 22. [Class 97 (i)] A stereoscope, for use with a slide 15 bearing images 16 which are side uppermost and have their vertical axes aligned but oppositely directed, comprises reflectors 17 reflecting light from the images to reflectors 18 and thence to oculars 11 ; the arrangement of the reflectors is such as to produce similar orientation of the viewed images 20. The plane of the slide 15 may be parallel to the axes of the oculars, or may be tilted between 5 degrees and 25 degrees thereto, the necessary adjustment of the reflectors being effected by trial and error. The housing of the apparatus may have a window in a front wall carrying ground glass adjacent a slot for the slide, and may have adjustable oculars in a top wall provided with a nose recess. Specifications 548,158 and 548,159 are referred to.
Patent GB-662479-A (GB)
Title: Improvements in wireless aerials
IPC: H01Q19/13
Filed: 1949-05-19
Abstract: 662,479. Aerials. KIELY, D. G., EVANS, G. S., and BUCKINGHAM, J. May 19, 1949, No. 13381/49. Class 40 (vii). A cheese aerial arrangement comprises a cylindrical-parabolic reflecting surface A closed by plates B and bounded by open apertures C and D which are substantially the same respectively as the focal and axial planes of the surface A. A wave-guide horn E for radiating or receiving radio waves is situated at the focus of the reflecting surface. The horn axis is directed at a predetermined angle # (preferably equal to 46 degrees) to the aperture C. It is stated that the radiation pattern of the horn should theoretically be asymmetrical; however, in the embodiment described, a symmetrical radiation pattern is used. Owing to the positioning of the horn E, its shadow effect on the radiated or received beam is less than that obtained in a normal cheese aerial. As a result the amplitudes of the side lobes are considerably reduced and, moreover, the variation in the maximum side-lobe amplitude with frequency is less than that with a conventional cheese aerial.
Patent GB-131163-A (GB)
Title: Apparatus for the Production of Radiographic Photographs Cinematographically.
Inventor: BRUCE VICTOR AUSTIN
IPC: G03B15/00
Filed: 1918-08-21
Abstract: 131,163. Bruce, V. A. Aug. 21, 1918. Kinematograph apparatus. - In apparatus for taking Rontgen ray kinematograph films, the film d is fed by an endless band i under the table a in which is an exposure opening e. The film is kept in contact with the band i by rollers h, h<1>. The band i is intermittingly fed by a toothed wheel j driven by a belt l from a clutch disk r. The wheel j is continuously rotated by a belt j<2> and a cam p intermittingly actuates the clutch r through connecting-rods q<1>, q. A synchronized commutator t, u operates to close the circuit o through the tube b during the rest period of the film.
Patent GB-456362-A (GB)
Title: Improvements in or relating to sensitizing photographic emulsions
IPC: G03C1/12
Filed: 1935-05-08
Abstract: 456,362. Sensitizing photographic emulsions. KENDALL, J. D., c /o Ilford, Ltd., 23, Roden Street, Ilford, Essex. May 8, 1935, No. 13601. Drawings to Specification. [Class 98 (ii)] Photographic silver halide emulsions are sensitized by incorporating in the emulsion a cyanine or pinaflavol base containing no quinquevalent nitrogen atom but containing two trivalent nitrogen atoms linked together by a completely conjugate chain of an odd number of carbon atoms. Sensitizing data are given for 1 -p-dimethylaminostyryl-benzthiazole, 2 -methyldihydrobenz -thiazolylidinequinaldine, 1 : 3 : 3-trimethylindolenine-21 : 1-ethylidene quinaldine, 2 -p - dimethylaminostyrylquinoline, 4 - p - dimethylaminostyrylquinoline, 1 - p - dimethylaminostyryl - 4 - dimethylaminobenz. thiazole, 1 -p - dimethylaminostyryl -3:4- benzthiazole, N - methyldihydrobenzthiazolylidinequinaldine, N-ethyldihydrobenzthiazolylidinequinaldine, N-methyldihydroquinolylidine-2-21- quinaldine, N-methyldihydrobenzoxazolylidinoquinaldine, N-methyldihydrobenzthiazolylidinelepidine, N-methyldihydrobenzthiazolylidine-4<1>- methylquinaldine, N-meth<y>l-4 : 5-dimethoxydihydrobenzthiazolylidinequinaldine, N-methyl- 4 : 5-dimethoxybenzselenazolylidinequinaldine, N -methyl - 5 : 6-benzdihydrobenzthiazolylidine quinaldine,N-methyldihydrobenzthiazolylidine- 41 - methylthiolquinaldine, N - methyldihydrobenzthiazolylidine - 1 - 4<1> - methylquinazoline. Sensitizing data are also given in respect of the following compounds not according to the invention : 1 - - p - dimethylaminostyryibenzthiazole ethiodide, 2: 2<1>-dimethylthioquinocyanine iodide, 1<1> - ethyl-1 : 3 : 3 - trimethyl- 2 : 21-indoquinocarbocyanine iodide. Specification 428,360 is referred to. The Provisional Specification refers also to compounds such as 1 (or 3)-l'-diethyl-4-4<1>-quinazo-isocyanine and to Specification 425,609.
Patent GB-461126-A (GB)
Title: Improvements in the production of bright electro-deposits of nickel-cobalt alloys
IPC: C25D3/56
Filed: 1935-05-10
Abstract: 461,126. Electrodeposition of nickelcobalt alloys. HINRICHSEN, O. May 10, 1935, Nos. 13784/35 and 13076/36. [Class 41] A bath containing formic acid and/or formates is employed for the deposition of bright platings. The bath may also contain small quantities of a mixture of glycerine and alcohol. A suitable composition is nickel sulphate 150-300 gms., cobalt sulphate 15- 40 gms., sodium formate 10-60 gms., boric acid 15-40 gms., nickel chloride 15-25 gms., sodium sulphate 25-80 gms. per litre. The pH value should be 4À1-5À1. The bath is maintained at 25-60‹ C., and a current density of 5-60 amps. per sq. ft. is employed. The electrolyte is agitated preferably by a combined horizontal and vertical oscillation of the cathode. Deposits may be made directly on brass, iron or steel. Chromium may be deposited over the alloy coatings.
Patent GB-425077-A (GB)
Title: Improvements in or relating to means for holding coiled kinematographic films
IPC: G03B21/32
Filed: 1934-05-07
Abstract: 425,077. Kinematograph apparatus. SCUPIN, W., 33, Wilhelmstrasse, Namslau, Silesia, Germany. May 7, 1934, No. 13799. [Class 97 (i)] A film holder comprises three sector-shaped plates held by a ring so as to form a casing having sector-shaped spaces between the plates, and an assemblage of pads bearing against the innermost layer of the films coiled in the casing. As shown, sector-shaped plates 1 are held by a ring 2 having windows 3, and rubber pads 14 are carried by radially adjustable blocks 13 so as to engage the film 24. The blocks 13 are carried by non-rotatable threaded tubes 12 on threaded spindles 10 rotatable through pinions 9 by gear teeth on a disc 8. The disc is rotatably mounted on a tube 7 and has notches 15 in its periphery engageable by a spring-pressed pin 16 to hold it in adjusted position. A cover 19 comprising a disc and a ring, each having windows therein, may be screwed on to the tube 7.
Patent GB-986189-A (GB)
Title: Process for the manufacture of block copolymers
IPC: C08F297/08
Filed: 1961-04-17
Abstract: Block copolymers are made from two or more a -olefines at least one of which contains from 2 to 4 carbon atoms by attenuating said olefines or mixtures of said olefines to the reaction mixture in the presence of an organometal catalyst wherein the catalyst comprises (1) a titanium chloro-compound in a valency state lower than 4 and (2) an organo aluminium compound, the titanium chloro-compound being obtained by reduction of TiCl4 with aluminium metal in the presence of aluminium chloride and, if desired, hydrogen.  The examples show the block copolymerization of ethylene with propylene, n-hexene-1, n-decene-1, or n-tetradecene-1.
Patent GB-705351-A (GB)
Title: Improvements in or relating to self-closing doors
IPC: E05F1/06
Filed: 1952-05-30
Abstract: 705,351. Doors and door frames. LARSSON, F. G. May 30, 1952 [June 2, 1951], No. 13871/52. Class 20 (3) A self-closing door 1, mounted to swing on pins 2, 3 and which on being opened is lifted by a roller 6 which co-operates with two inclined guides 4, 5 mounted on the floor concentrically about the lower pin 3, is characterized in that the gap 9 which exists between the door frame 10 and the upper edge of the door, when the latter is closed, is sealed by a metal bar 11. The bar is supported on a pivot 12 in a groove in the door frame, the free ends of the bar being provided with a projection 13 which rests on, and moves with, the pin 2. The guides 4, 5 are provided with flat surfaces 7 which prevent the roller 6 from slipping back when the door is in its fully open position. In order to retain the door in its closed position a gap 8 is provided between the oppositely disposed lowermost points on the guides 4, 5.
Patent GB-1055366-A (GB)
Title: Improvements in heat sealable folding boxes and method of closure
IPC: B65D5/02
Filed: 1965-04-02
Abstract: 1,055,366. Heat sealable cartons. KLIKLOK CORPORATION. April 2. 1965 [Feb. 25, 1965], No. 13988/65. Heading B8P. An embossed panel of a folding box made of paperboard coated with thermoplastic material is bonded to a second panel by melting the coating with heat. In the embodiment described embossed areas 32-35 are made in the panels 20, 22 and 24 respectively of a carton blank B, Fig. 1, so that, when the box is erected, Fig. 5 (not shown), the embossed surfaces all lie in the same plane, Fig. 6 (not shown). The box is sealed by melting the coating on the panels 26, 33, Figs. 2-4 (not shown), by a blast of hot air and then pressing the flap 26 down against the wall 33.
Patent GB-119292-A (GB)
Title: Improved Submarine Apparatus for use as a Mine Sweeper and Submarine Destroyer.
Inventor: STOW AUDLEY HART
IPC: B63G9/04
Filed: 1917-09-28
Abstract: 119,292. Stow, A. H. Sept. 28, 1917. Submarines, destroying. - An apparatus for destroying submarines and for use as a minesweeper comprises a steel net connected by metal ropes or chains to spars carried by submarines which are stated to be steered on divergent courses so that the vessels are situated behind the net. The net 50 is connected by cables 53, 54 to members 51, 52 pivoted to sockets 56 carried by spars 31, 41 braced to the bows of submarines 10, 20 and is prevented from collapsing by distance-pieces 80 having eyes through which the upper and lower cables pass. The members 51, 52 have a truss-like shape and are adapted to be adjusted in position by links 78 connected to screwed spindles operated by hand-wheels inside the vessels. A signal wire 90 connects the two vessels. Automatic means may be provided to release the net from its supports.
Patent GB-239296-A (GB)
Title: Twist-drill grinding machine
IPC: B24B3/24
Filed: 1924-06-10
Abstract: 239,296. Evans, W. E., (Mayer & Schmidt Schleifmaschinen-u. Schmirgel-Werke Akt.- Ges.). June 10, 1924. Twist drills, sharpening.-In a machine for grinding twist drills comprising a horizontallydisposed headstock 19 carrying the. drill-chuck spindle 10, the oscillation of the headstock and the axial movement of the spindle are both effected by a double cam 13 carried by a sleeve provided with clutch teeth at each face and slidable on a key fixed to a sleeve 12 on the spindle 10 which also slidably engages the key so that the cam and spindle are driven when the cam sleeve is moved into engagement with clutch teeth on the face of a bevel wheel 9 loosely mounted on the chuck spindle and driven from. a vertical shaft 8. The cam 13 engages a plunger 17, horizontally disposed in a bearing in the headstock and bearing against stop 32 to oscillate the headstock, and a bell-crank lever 18 pivoted in the headstock and linked to the plunger 17 engages a collar 20 fixed to the spindle 10 and moves it axially forward, the return of the spindle being effected by a spring 11 engaging the collar 20. The headstock is pivoted about the axis of the shaft 8 and is kept in contact with the strop 32 by a weight or tension spring 21 connected at one end to a fixed part of the frame and at the other to a plunger 23, slidable in a fixed casing 22 and carrying a pin 24 projecting downwards and engaging between a lug 25 on the headstock and a fixed plug 26. When the headstock is being oscillated the pin 24 engages an inclined face 27 on the lug 25 and exerts tension on the spring 21 while running on the lateral face of the lug 26; if, however, the headstock is moved so that the pin slides on to the inclined face 28 of the lug 26, the pin runs on the lateral face of the lug 25 concentric with the axis of the headstock which can then be swung freely. The extent of oscillation of the headstock and backing-off of the drill may be varied bv altering the position of the stop 32 which is adjustably carried by a fixed part. of the machine frame. The spindle is locked, for removal or insertion of a drill when the cam is moved out of engagement with the bevel wheel 9, by a pawl 29 pivoted in the headstock and pressed by a spring to engage between the teeth on the face. of the cam sleeve opposite to the bevel wheel 9.
Patent GB-1210234-A (GB)
Title: Liquid fuel injection pumping apparatus
Inventor: KEMP KENNETH ALBERT WALTERS
IPC: F02M41/14
Filed: 1967-03-28
Abstract: 1,210,234. Fuel injection pumps. C.A.V. Ltd. March 11, 1968 [March 28, 1967], No.14060/67. Heading F1A . The subject-matter of this Specification is identical with that described in Specification 1, 210, 233, but the claims are directed to the spill device.
Patent GB-202410-A (GB)
Title: Improvements in rattling-preventing and holding means for sliding doors, windows, and the like
IPC: E05F11/00
Filed: 1922-05-19
Abstract: 202,410. Gabriel, C. E. P. May 19, 1922. Holders for sliding windows.-In a rattling-preventing and holding device for sliding windows, doors, &c., having a roller a on a spring-pressed sliding piece c, which has a pin- and-slot engagement with the fixed socket d, the spring f bears against a detachable screwed cap g on the socket. The roller may be covered with fibre, &c., and runners having projections or recesses may be provided in the window, &c. Specification 199,888 is referred to.
Patent GB-611835-A (GB)
Title: Improvements in or relating to push chairs or the like
IPC: A61G5/00
Filed: 1946-05-10
Abstract: 611,835. Seats. HUBNER, A May 10, 1946, No. 14142. [Class 52(ii)] [Also in Group XXXII] The seat frame of a child's push chair (see Group XXXII) comprises two side members 6 joined by transverse members 7, 7a and carrying pivots 9 for arm rests 8. A stiff upholstered board 10 forming the seat rests on the members 7, 7a which are pivoted to the side members 6, and is provided with two pivoted flaps 14, 11 resting on a foot rest frame on the chassis (not shown) and on a back-rest support 12 pivoted to arms 13 pivoted on the members 6. The arms 13 and the arm-rests 8 support one another by means of pins 15 normally locked by pivoted catches 16. Pins 17 on the side members 6 are received in lugs either on a push chair chassis (see Group XXXII), or on a low chassis with castoring wheels to form a nursery chair.
Patent GB-471995-A (GB)
Title: Method and apparatus for the treatment of sewage
IPC: C02F1/72
Filed: 1936-05-19
Abstract: 471,995. Treating sewage. TUBE D'ACIER, and GANDILLON, R. May 19, 1936, No. 14153. Convention date, July 22, 1935. [Class 111] Sewage before it reaches the sewer is subjected to a vigorous mixing, stirring or bubbling action by means of air or other oxidizing gas or vapour, the air and sewage gases subsequently passing with the sewage through the sewer. The Figure shows a tank 1 with sewage inlet 2 and an outlet 3 through which the sewage is discharged to the sewer under suction. Air, with or without other oxidizing agent, enters through a pipe 5, either from the atmosphere or under pressure.