baber/WOPTO huggingface dataset:
Patent GB-521808-A (GB)
Title: Improvements in and relating to loudspeakers of the electrodynamic type and to methods of assembly thereof
IPC: H04R9/02
Filed: 1938-11-25
Abstract: 521,808. Loud-speakers. PHILCO RADIO & TELEVISION CORPORATION. Nov. 25, 1938, No. 34331. Convention date, Dec. 15, 1937. [Class 40 (iv)] In assembling a loud-speaker of the moving-coil type the coil 1 is wound on a paper or like tube 2 which is located in the air-gap by a mandrel consisting of a piece 3 resting on the polepiece 6 and a depending portion 5 surrounding the pole piece. The tube 2 is positioned axially by means of turned-over pieces 2a on which rests a weight 7. The spider 11 which preferably consists of two plane portions united by a corrugated portion is then fitted loosely over the tube 2 and secured to the frame 13 of the device by adhesive. Next the spider 11 is secured by adhesive to the tube 2. The diaphragm 15 is next placed in position and its outer edge secured to the frame 13 by adhesive, being held in place by a weight during setting. Next the inner edge of the diaphragm is secured by adhesive to the tube 2. The inner edge of the spider 11 may be serrated to allow of the passage of the leads 9. A dust cap may be placed over the end of the tube.
Patent GB-1004500-A (GB)
Title: Improvements in or relating to exercising apparatus
IPC: A63B21/04
Filed: 1964-08-21
Abstract: 1,004,500. Exercising apparatus. GYMKING HOLDINGS (PROPRIETARY) Ltd. Aug. 21, 1964 [Aug. 23,1963], No.34380/64. Heading A6M. Gymnastic equipment for various exercises, particularly that simulating rowing, comprises an oblong board 10 with means 12 to incline the board from one end at several angles on steps 14, levers 20, with handles 34, pivoted at the sides of the board for movement parallel to the board and variable spring means 28 for biasing said levers. The levers 20 may include spring loaded levers 48 carrying a roller 46 for combining abdominal massage with the rowing exercise.
Patent GB-485679-A (GB)
Title: Improvements in and relating to compositions comprising fibres and bituminous material
IPC: D21J1/08
Filed: 1936-12-15
Abstract: A plastic composition comprises a water-in-bitumenous-material emulsion and fibrous material containing lignin, resin or the like, e.g. wood, the weight of the water being less than that of the fibrous material.  The lignin &c. itself stabilizes the emulsion, but additional stability may be obtained by adding an alkaline substance such as lime, which combines with the lignin &c.  The composition may be made by disintegrating wood chips in the presence of water and lime in a Banbury mixer, adding oxidized asphalt in quantity about equal by weight to that of the wood and continuing the mixing.  When the emulsion has been formed, more asphalt may be added.  The composition, which hardens when the water is eliminated, may be made into roofing elements, conduits and battery boxes.
Patent GB-345056-A (GB)
Abstract: 345,056. Sterilizing-apparatus. BERKOVI, L., 67, New Oxford Street, London. Feb. 21, 1930, No. 5810. [Class 81 (i).] A vaporizing apparatus for sterilizing and like purposes comprises a reservoir for the liquid to be vaporized, a drip feed supplying liquid from the reservoir to a vaporizing vessel, and means whereby an excess of liquid in the vaporizing vessel closes the air supply to the reservoir and so stops the supply of liquid. In the illustrated embodiment the drip feed comprises a spring-controlled ball-valve 11 operated through a push rod 13 by the screw cap 5 of the reservoir 4. The air supply tube 16 to the reservoir is closed at its lower end by an excess of liquid in the vaporizing vessel 2. The heating means is an electrical resistance wound on a spindle 15 attached to the vaporizer ; alternatively a lamp &c. may be used in which case a heat collector 18 is fitted. The vapour is withdrawn by the pipe 17 and may be led to a cabinet, room, or other enclosure.
Patent GB-283204-A (GB)
Title: Improvements in steam generators
IPC: F22B21/34
Filed: 1927-12-20
Abstract: 283,204. Enternational Combustion Engineering Corporation, (Assignees of Wood, W. R.). Jan. 8, 1927, [Convention date]. Pulverulent-fuel burners.-Pulverulent fuel is delivered upwardly into the combustion chamber of a water-tube boiler from a burner located at the base thereof and adapted to produce a mushroom-shape flame. Fuel and air are supplied to the burner by the pipe, 35 and supplementary air is delivered through the casing 33.
Patent GB-1107945-A (GB)
Title: Improvements relating to indicating instruments
IPC: G01D13/10
Filed: 1966-08-02
Abstract: 1,107,945. Indicating instruments. WESTON INSTRUMENTS Inc. Aug. 2, 1966 [Aug.18, 1965], No.34517/66. Heading G1J. An electrically operable indicating instrument comprises a housing 32 in which is mounted an electrically responsive instrument movement 31, a projection strip 10 having portions of contrasting light-affecting qualities, the strip being movably mounted and coupled to said instrument movement so as to be positioned thereby, mounting means for receiving a lamp 20, the light from which in use forms an image on a viewing screen 28 in a front face, the image depending on the position of said projection strip, adjusting means 46 for adjusting the datum position of the instrument movement, and adjusting means for adjusting the position of the lamp mounting means 66, at least one of the adjusting means being actuable from the said front face. The light from lamp 20 passes through a condenser lens 22 before passing through the member 0 on to a further lens 24 and then is reflected by a suitable mirror a prism member 26 on to the screen 28 bearing a reference line. The tray 44 on which the lamp 20 is mounted may be removed through the front of the casing.
Patent GB-1483005-A (GB)
Title: Charge forming apparatus having a heat exchanger system
IPC: F02M15/00
Filed: 1975-08-20
Abstract: 1483005 Spray carburetters BORG-WARNER CORP 20 Aug 1975 [9 Sept 1974] 34656/75 heading F1H To prevent fuel vapour locks in a carburetter having fluid-flow luminar elements 100 to 103 between the float chamber 52 and the Venturi body section 12, a heat exchanger element 55 is secured to the face of float chamber, Fig. 7 to circulate fuel from the fuel supply upstream of the float valve 72 through channels in the element and back to the fuel tank so as to cool the float chamber Two or three elements may be employed 55', 55" Fig. 12 or 55c, 55c', 55c" Fig. 18. In the latter case the third element 55c" is provided on the Venturi section 12c. Communication between elements may be via internal passages e.g. 269 and 271 and the channels in the elements may be series or parallel connected to the each other or individually connected to the supply pipe as illustrated in Fig. 21 (not shown). The elements may be of fibrous gasket material, the quantity of fuel flowing therein being governed by the channel size. The channel may also be formed integrally with block 100, Fig. 7, containing the adjustment devices 138, 124 as illustrated in Fig. 15 to 17 (not shown), the block comprising plastics or resinous material. The carburetter per se functions substantially in the manner disclosed in Specification 1466669.
Patent GB-866376-A (GB)
Title: Improvements in or relating to processes for producing semi-conductor devices
IPC: C22C5/02
Filed: 1958-10-29
Abstract: An alloy used in the manufacture of semi-conductor devices (see Group XXXVI) consists of gold, antimony and sulphur and preferably also arsenic.  The antimony constitutes between 0.2 and 5% by weight of the alloy, sulphur between 0.0001 and 0.1% and the arsenic when present between 0.001 and 0.1%.  The alloy may be prepared by fusing sulphur or antimony sulphide with antimony and subsequently mixing the antimony-sulphur alloy thus produced with gold in at least one further melting operation.  The proportion of gold is increased step by step until in the final melting operation it preferably constitutes 99% of the melt. Alternatively the sulphur or antimony sulphide is mixed directly with a quantity of gold (with or without antimony), and the final composition produced by one or more melting operations in which the proportion of gold is increased and the, or additional, antimony is added.  Specifications 827,762 and 865,370 are referred to.
Patent GB-620132-A (GB)
Title: Television color mixing system
IPC: H04N9/73
Filed: 1945-12-27
Abstract: 620,132. Television. FARNSWORTH TELEVISION & RADIO CORPORATION. Dec. 27, 1945, No. 34979. Convention date, Dec. 29, 1944. [Class 40 (iii)] A colour television transmission system comprises means for generating successive groups of picture signals, each group being representative of a selected colour component of an object for transmission, means for amplifying said groups of picture signals, means including an electron multiplier photo-electric cell for deriving a signal representative of the average illumination of said object during each colour transmission period, and means for controlling the degree of amplification of said groups of picture signals in accordance with the signal derived from said photo-electric cell. In a particular embodiment, an image of an object 2, Fig. 1, is focused, by means of lens system 4, onto the mosaic electrode 3 of an iconoscope-type tube 1 and simultaneously, by means of lens system 26, on to a photo-electric cell electron multiplier 25, both images being transmitted through a rotatable colour filter 5 driven by a motor 6 synchronized by the vertical scanning generator 18. The signal output of tube 1, developed across resistor 20, is applied, after amplification in 22, to the grid of an amplifying valve 60, the gain of which, and hence the signal level fed to the modulator transmitter 61, is controlled in accordance with the signal output developed across resistor 57, of the electron multiplier photo-cell 25. In this manner the transmission level of each colour component is controlled automatically in accordance with the average light intensity of each individual colour component. An additional control, permitting adjustment of the relative brightness values of the individual colour components, utilizes an electronic switching circuit by means of which the gain of the photo-cell multiplier 25 may be varied by a predetermined amount for each of the colour components to be transmitted. The arrangement includes a pulse generator 27 Fig. 1, comprising, for a three-colour system, three generators 30, 31, 32, Fig. 2, each delivering a square wave positive pulse of duration equal to the time of scanning a single picture field (1/120 sec.), and recurrence period equal to that of a single colour field (1/40 sec.). The outputs of the generators, which are synchronized by the scanning generator 18, are fed to three triode valves 43, 44, 45, which are thereby keyed to pass anode current during the occurrence of the appropriate pulses and so to vary the potential difference, between certain stages of the photo-cell multiplier 25 and hence to vary the total gain of multiplier. The actual gain of the multiplier for each colour may be manually set, or adjusted, by means of the potentiometers 36, 38, 41. Valve 60 may be biassed so that, in the absence of illumination of the photo-cell multiplier, its gain, and, consequently, the radiated power, is a maximum (U.S.A. system) thus permitting the black level to be established as the reference level for all the colours. Specification 568,326 is referred to.
Patent GB-196876-A (GB)
Title: Improvements in or relating to the manufacture of thin celluloid or other films suitable for optical purposes
IPC: C08L1/00
Filed: 1922-12-22
Abstract: Thin films of celluloid, indiarubber, &c., which are optically flat and are suitable as reflectors or screens in optical instruments such as chromoscopes, are made by applying a celluloid &c. solution to the prepared surface of a soluble base, which is simultaneously or subsequently rotated at high speed so as to distribute the solution and to reduce the film to the desired thinness.  After drying, a rigid mount is attached to the resulting film while still supported by the base, and thereafter the base is dissolved away so as to leave the film attached to the mount.  For a celluloid film a suitable solution is 1 part of celluloid and 10 parts of amyl acetate and with this the base is conveniently a plate of rock salt 0.1 inches in thickness; after coating, the base and film are warmed and cemented to a brass mount, which is then supported with the base just dipping in water.  The film may be left transparent or it may be silvered or coloured.
Patent GB-772717-A (GB)
Title: Improvements relating to wheel mounting and steering apparatus
Inventor: ULINSKI BRONISLAUS IGNATIUS
IPC: B60G9/02
Filed: 1954-12-03
Abstract: 772,717. Steering vehicles. YALE & TOWNE MANUFACTURING CO. Dec. 3, 1954, No. 35040/54. Classes 79(4) and 79(5). A wheel mounting, Figs. 7 and 8, has bearings 31, 32 defining a steering axis about which it is mounted to rotate, and has a bar provided with a bearing which, when the bar is secured to the wheel mounting, co-operates with one of two additional bearings 43, 44 to mount a pivot pin for one end of a steering tie rod. The wheel mounting is interchangeable from one to the other side of a vehicle. The mounting is applied to an industrial truck wherein a back axle 17, Fig. 2, is pivoted on a pin 19 welded to a transverse plate 12 which connects the ends of the side frame rails 10 and 11. An end plate 20 holds the axle on the pivot 19, and bearings 22 formed integrally with the axle abut the plate 12 to relieve the pivot 19 of lateral bending moments. Keyed in the ends of the axle 17, Fig. 7, are king-pins 35 mounted in bearings 31 and 32 in flanges 29 and 30 symmetrically spaced on the wheel mountings 24. Conical seatings 38 co-axial with the king-pins are raised on the axle ends and " O " rings 40, forced onto the seatings 38, form a seal for the ball-bearings. Each wheel mounting is formed with a stub axle 25 on one side and on the other side with the bearings 31, 32, tie rod bearings 43 and 44, and with threaded lugs 48. The bar 45, Fig. 7, carries a steering arm 54 and is bolted across the threaded lugs 48 of the wheel mounting 24 so that a bearing recess on its underside lies coaxially above the bearing 43 to form therewith a support for the ends of a pivot pin 50 which passes through a bearing in the end of a tie rod 41. The tie rod 41 is similarly connected at its other end to the opposite support 24 which utilizes for the purpose the bearing recess 44 together with a bar 46. The ends of the tie rod 41, Fig. 2, are cranked to clear the rims of the wheel when these are steered. The steering arm 54 is cranked to overlie the wheel 14 and is connected by rod 58 to a conventional steering gear box and pitman arm. Lugs 37 integral with the axle 17 limit the steering of the wheels about their king-pins.
Patent GB-835484-A (GB)
Title: Resilient gasket
Inventor: NAESER HOWARD JOHN
IPC: F25D23/08
Filed: 1957-11-11
Abstract: 835,484. Draught excluders. GOODRICH CO., B. F. Nov. 11, 1957, No. 35062/57. Class 20(3) [Also in Group XIII] A sealing strip comprises a thin-walled hollow body 10 which is made of a resilient elastic material, e.g. polyvinylchloride, and is defined by walls 11, 12 which diverge transversely from a common wall 13 and are joined along their outer edges by an integral re-entrant V-shaped portion 14, the walls of which are preferably of less thickness than the walls 11, 12. The strip is preferably cut to extend completely around the opening to be closed, the meeting ends preferably being joined e.g. by heat sealing. The hollow body 10 is easily compressed due to the bellows action of the V-portion 14, the action being aided by providing a longitudinally extending groove 16 which acts as a pivot in the region of the wall 13. An initial contact lip 17 is provided on the outer edge of the wall 11. The strip can be secured by cementing the outer face of the wall 12 to the sheet metal covering 25 of an insulated refrigerator door 23. The strip, however, is preferably provided with a flange 18 which has ribs 21 on its outer surface and a flange 22 along its inner edge and which is joined to the hollow body 10 by an integral hollow wall portion 19. The flange 18 is secured to the sheet metal covering 23 by means of a plate 27 and screws 28. In a modification the portion 14 has two re-entrant portions and is of approximate W-shape in cross-section. In a further modification, Fig. 5, the attachment flange 34 has edge flanges 41, 42 and the outer wall 36 has two contact flanges 39, 40, and a longitudinal groove 38 opposite the apex of the re-entrant portion 37. The attachment portion 18 of the strip may be notched to facilitate disposal in an arcuate configuration.
Patent GB-1532635-A (GB)
Title: Curved bar expanders for use in the handling and production of sheet material
IPC: D06C3/06
Filed: 1975-08-23
Abstract: 1532635 Expanding webs transversely MODERN ROLLERS Ltd and G BUTTERWORTH 20 Jan 1976 [23 Aug 1975] 35106/75 Heading B8R [Also in Division F2] A web expanding bar comprises a curved bar 1 on which is mounted a plurality of bobbins 4 each provided with spaced annular grooves 8 in which are located rubber 0-rings 9. The rings may be replaced by bonded rubber sleeves. The circumferential surface of the bobbins may be knurled. The radial faces of the bobbins may be chamfered to reduce friction between the bobbins or seizure of bobbins mounted on the curved shaft. The bobbins may be interconnected drivingly with one another and one end bobbin may be provided with a pinion which is connectible to a drive means.
Patent GB-1270001-A (GB)
Title: Improvements in or relating to automatic focussing photocopying apparatus
IPC: G03B27/36
Filed: 1969-07-11
Abstract: 1,270,001. Photo-copying apparatus. SOC. V. BOUZARD & SES FILS. July 11, 1969 [July 12, 1968], No.35132/69. Heading G2A. The original and copy sheet supports M, I respectively of a projection printer are continuously coupled together by a rigid lever L, pivoted at 16, to ensure accurate automatic focusing, the supports M, I having slidable pivots 17, 18 associated therewith, in which pivots 17, 18 the ends of the lever L slide as the pivots move on slides 14, 15 respectively. The magnification ratio is altered by moving a handle 23 attached to a pinion 20, this movement driving a chain 19 on which are provided pins 26, 27. These pins are engageable by bifurcated levers 24, 25 also associated with the supports M, I. As shown, the pin 26 is engaged by the lever 24, so movement of the chain 19 clockwise (as seen) results in direct driving of the support M, this causing the lever L to slide at 17, 18 and pivot about 16 to move the support I (i.e. the support I is driven indirectly by movement of the chain 19). As this clockwise movement continues, a roller on the lever 24 reaches the top edge of the vertical portion of a guide surface 28 and pivots about this edge. When the pin 26 is just about to escape from the lever 24, the pin 27 engages the lever 25, the roller of which is just ready to pivot about the left hand edge of the horizontal portion of a guide surface 29. This position is reached when the handle 23 is set for unit magnification. Further clockwise rotation of the chain 19 results in direct driving of the support I and indirect driving of the support M. Imaging is effected by a mirror 11 and lens 10. In another embodiment Fig. 6 (not shown) a plurality of inter-changeable lenses (10 1 , 10 2 , 10 3 ) are provided, and the lever (L) has a plurality of pivot points (16 1 , 16 2 , 16 3 ) each corresponding to one lens. Two transmission chains (37, 38) having one spindle in common are provided, the handle for altering the magnification ratio also being mounted on this spindle. In a third embodiment Figs. 9, 10 (not shown), interlinking bellows (61, 62, 63) are provided between the original support and a mobile partition (64), between the partition and the frame of the apparatus, and between the partition and the support (I), respectively, for ensuring light-tightness. For making enlargements, the bellows (62) is compressed and the other two adjusted to vary the magnification ratio, and for reductions, the bellows (61, 63) are both compressed and the bellows (62) adjusted. In a modification of this, Fig. 11 (not shown) a plurality of lenses are provided on a rotatable plate, there being a block (70, 71...) associated with each lens to vary the position of the mirror (11) in dependence on the nodal interval of the lens selected.
Patent GB-871563-A (GB)
Title: Improvements in or relating to automatic electronic controllers
IPC: G05B11/01
Filed: 1957-02-22
Abstract: 871,563. Automatic temperature control systems. STEGHART, F. L. F. Feb. 22, 1957, No. 35152/60. Divided out of 871,562. Class 38 (4). In an electronic control system for automatically-maintaining temperature at a desired value, temperature variations are detected by an element in a bridge circuit controlling an electric motor-driven regulator through an electronic amplifier and negative feed-back is provided by a switched heater influencing a temperature-variable element introducing a voltage in series with the bridge output. In the arrangement described, which is identical with one described in Specification 871,562, deviation of temperature from a desired value influences a thermistor 201 to unbalance a D.C. bridge circuit 200 the output of which is effective, through an electronic amplifier, to operate a temperatureregulating motor 38 in the appropriate direction. The amplifier-controller, which has negative feed-back through a derivative network to introduce an integral component of control. When motor 38 is at its extreme position, starting up from cold, it closes a switch 229 to energize a heater 227 associated with a thermistor 221 in a second bridge circuit so that an opposing bias voltage, to prevent excessive overshoot, is introduced into the output of bridge circuit 200. A thermistor 220 compensates the second bridge circuit for ambient temperature variations.
Patent GB-760346-A (GB)
Title: Novel esters of bixins and norbixins and process for the manufacture thereof
Filed: 1953-12-17
Abstract: The invention comprises esters of bixins and norbixins having the general formula R1OOC-B-COOR wherein B represents the hydrocarbon residue of cis or (all trans) norbixin and R and R1 represent the characterizing groups of alcohols containing at least 5 carbon atoms or R1 may be the methyl group; thus R and R1 may be alkyl, alkenyl or cycloalkyl groups of five or more carbon atoms.  The esters may be prepared by heating the bixin or norbixin with oxalyl chloride in an inert solvent under substantially anhydrous conditions, if desired in the presence of an organic tertiary base, and reacting the resulting acid chloride with the desired alcohol, suitably in the presence of an acid-binding agent.  The esters are colouring agents for fats.  In examples: (1) cis-bixin is refluxed in dry benzene with oxalyl chloride and the product reacted with amyl alcohol yielding cis-bixin amyl ester or (2) with n-hexanol yielding cis-bixin n-hexyl ester; (3) cis-bixin is converted as above into its acid chloride which is reacted with n-octanol in benzene containing pyridine, the reaction mixture in ether is chromatographed on an aluminiumoxide column to remove unchanged bixin and the filtrate worked up to yield cis-bixin n-octyl ester; (4)-(17) in like manner the following are prepared: n-decyl, n-hexadecyl, n-octadecyl, cholesterol, geraniol and Vitamin-A.alcohol esters of cis-bixin; n-octyl, n-octadecyl, phytyl and Vitamin-A alcohol esters of (all trans)-bixin; di-n-octyl and di-Vitamin A alcohol esters of cis-norbixin; di-n-octadecyl and di-Vitamin A alcohol esters of (all trans)-norbixin.ALSO:Fats are coloured by means of bixin or nor-bixin esters having the general formula R1OOC-B-COOR wherein B represents the hydrocarbon residue of cis or (all trans) nor-bixin and R and R1 represent the characterizing groups of alcohols containing at least 5 carbon atoms or R1 may be the methyl group.  Bixin and nor-bixin esters of amyl, hexyl, octyl, decyl, hexadecyl, octadecyl geranyl, phytyl and Vitamin-A alcohols and cholosterol are mentioned.  Their preparation is given (see Group IV(b)).