baber/WOPTO huggingface dataset:
Patent GB-439009-A (GB)
Title: Improvements in or relating to public address systems
IPC: H04R1/34
Filed: 1935-03-07
Abstract: 439,009. Public address systems; supporting loud-speakers. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. March 7, 1935, No. 7198. Convention date, March 9, 1934. [Class 40 (iv)] [See also Group XXXVIII] An open air or like public address system for distributing sound over a large area comprises a number of loudspeakers or groups thereof fed from a common source and distributed over the area, the loudspeakers having mushroom-like insertions in the sound channels and being arranged so that sound is propagated radially and downwardly. The area may be split up into imaginary squares or rectangles with a loudspeaker at the corner of each square. Echo effects are substantially avoided. The amplifier may emphasize the higher frequencies. Each loud-speaker 7 may be pivoted to a bracket 8 on a post 6 and be provided with sound directing surfaces 9, 10 spaced by posts 11 the resultant sound channel having a exponential characteristic. The surface 9 is a continuation of the diaphragm. Alternately exponential horn loudspeakers, with reflectors in the horns, may be used.
Patent GB-540617-A (GB)
Title: Engine starting mechanism
IPC: F02N99/00
Filed: 1940-04-22
Abstract: 540,617. Turning gear ; brush holders for dynamo-electric machines. BENDIX AVIATION CORPORATION. April 22, 1940, No. 7245. Convention date, May 5, 1939. [Class 7 (v)] [Also in Group XXXV] In an engine starter comprising a flywheel 5 set in rotation alternatively by an electric motor 8 or by manual or other neans acting through a gear train 34, 35, 12, 11, a clutch 42 between the motor and the flywheel can be disconnected during the use of the alternative means acting through the gear train. Instead of disconnecting the clutch, the brushes of the motor may be lifted, so that the inertia of the armature is added to that of the flywheel. As shown, the flywheel 5 is connected through the gears 11, 12 and a capacity-controlling pre-set clutch 13 to a clutch element 9 movable into engagement with a clutch element 10 on the engine shaft by a rod 16 actuated by manual means 18 or by a solenoid, the plunger 21 of which is connected to the rod 16 by levers 22, 23 and a rock-shaft 24 controlled by a spring 17. The clutch 42 meshes with internally splined elements 43, 44 on the armature shaft and the flywheel and is actuated through a rod 49 and a lever 52 engaged by a cam notch 61 in a bar 57 actuated by a cable 64 connected to a manually-actuated bar 95, Fig. 5, A similar bar 91 operates brush-lifting mechanism through a bell-crank 74 and a link 73 connected to a pin 71 movable in a slot 68 in the motor housing and secured to a cam ring 66, Fig. 6, acting upon the brush carriers 81. Spring detents may be arranged to retain the ring 66 in the positions in which the brushes are engaged or disengaged. To prevent disengagement of the clutch 42 when the brushes are disengaged and vice versa, an interlocking bar 86 slides in a guide 87 and a spring 88 normally holds the bar in engagement with an inclined notch 89 in the rod 91. Movement of the rod 91 to disengage the brushes engages the other end of the bar 86 with a notch 93 in the rod 94, preventing the disengagement of the clutch 42. The rod 94 carries a bar 97 normally bridging contacts in the circuit of the relay 27 for closing the circuit of the motor 8 on operation of a switch 26 This circuit also includes the solenoid actuating the plunger 21.
Patent GB-491887-A (GB)
Title: Improvements in or relating to electron discharge devices for use in television and like systems
IPC: H01J31/26
Filed: 1937-03-12
Abstract: 491,887. Cathode - ray tubes; photoelectric cells. BAIRD TELEVISION, Ltd., and JONES, V. A. March 12, 1937, No. 7300. [Class 39 (i)] A mosaic screen 7 is mounted on a plate 6 of photo-conductive material, such as selenium, which in its turn is mounted on a transparent conducting layer 5. An electron image of a scene to be televized is formed on the screen 7, either by making the screen of photo-electric material and projecting the optical image directly on to, or by focusing an image formed on a separate photo-electric screen on to, the mosaic. The side of the plate 6 opposite to the screen 7 is then scanned by a light spot, thus furnishing signal currents to the layer 5.
Patent GB-717314-A (GB)
Title: An operating key for typewriters, calculating machines and the like
IPC: B41J5/16
Filed: 1951-03-30
Abstract: 717,314. Typewriters. OLYMPIA WERKE WEST GES., [formerly ORBIS BUROMASCHINENWERKE GES. March 30, 1951 [April 8, 1950; March 6, 1951], No. 7382/51. Addition to 713,164. Class 100 (4) Keys. - In a resiliently mounted keybutton 1 for typewriters, calculating and like machines wherein a keylever 5 and a stem 3 of the key-button have a limited relative movement controlled by a cylindrical pressure spring 8 the key-lever 5 is provided with a notch 6 with which is engaged the lower end of a slot 4 in the stem 3. The spring 8 is supported in a cup 9 s'otted to pass the stem 3 and to non-rotatively engage a projection 7 on the key-lever 5. The key-button 1 is formed with a rim 2 to slidingly surround the cup 9. A modification is shown in Fig. 3 wherein the key-lever is upward directed at its end and is slidingly engaged by the stem 3 which is bent at 11 to prevent angu'ar displacement. Alternatively the stem may be provided with projections extending at right angles along the lever 5.
Patent GB-622520-A (GB)
Title: Improvements in toy ticket punches
IPC: B26F1/36
Filed: 1947-03-18
Abstract: 622,520. Ticket punches. CARTWRIGHT, Ltd., A. S., and HODSON, W. March 18, 1947, No. 7407. [Class 106 (iii)] A toy ticket punch comprises a spring- influenced lever (10) directly connected to a sliding punch (8) for operation thereof, and a bell-striker (15) rigidly and directly carried upon the lever. A hand-operated lever 18, pivoted on a pin 19 and biassed by a spring 23, comprises a lug 24 for engagement with a step 25 of the lever 10. Towards the end of the downward stroke of the lever 18 the lug 24 rides over the end of the step 25 and the lever 10 flies back causing the striker 15 to sound the bell 16. An indicator disc 26 is stepped forward by a lug 30 on the lever 18 at each operation, as in Specification 520,746 which is referred to.
Patent GB-905791-A (GB)
Title: Improved coupling device for releasably securing a number of harness components
IPC: B64D17/32
Filed: 1959-03-03
Abstract: 905,791. Releasable fastenings. AIRCRAFT MATERIALS Ltd., GOULD, G. H., and COWAN, S. S. April 21, 1960 [March 3, 1959], No. 7435/59. Drawings to Specification. Class 44. The subject-matter of this Specification is identical with that described in Specification 905,792, but the claims are concerned with the prevention of undesired release of the harness.
Patent GB-1461039-A (GB)
Title: Screw compressor
IPC: F04D27/00
Filed: 1975-02-21
Abstract: 1461039 Rotary positive-displacement fluidmachines KUHLAUTOMAT VEB 21 Feb 1975 [22 Feb 1974] 7439/75 Heading E1F In a meshing-screw compressor, Figs. 1, 3 and 4, having male and female rotors 7, 8 and a "slide valve" 11 to regulate the delivery rate, ducts 19, 20 in the valve and a "bracket" 18 connect a delivery chamber 5 to a contracting chamber between the rotor lands and lobes, so as to equalize the pressures and thus reduce noise, when the valve is at or near to its minimum delivery position. The positions of the ducts 19, 20 may be in effect reversed, Figs. 2 and 5 (not shown). Alternatively, the ducts 19, 20 are arranged to connect the chamber 5 to a suction chamber 4 when the valve is at or near to its minimum delivery position, Fig. 6 (not shown).
Patent GB-661918-A (GB)
Title: Apparatus for slitting baked goods
IPC: B26D3/30
Filed: 1949-03-19
Abstract: 661,918. Slitting buns &c. MULLER, E. R., and MULLER, A. R. May 31, 1950 [March 19, 1949], No. 7553/49. Class 28 (i). Apparatus for slitting buns &c. comprises a chute for guiding the buns and cutting means projecting into said chute so that buns passed through said chute are slit by the cutting means. As shown, a rotary cutting blade 5 is mounted on the shaft of a motor 7, whose position may be varied parallel to and perpendicular to the axis of the shaft so as to vary the position of the cut in the bun. The chute 24, in which the buns are an easy fit and which may be rotated slightly to vary the angle of the cut, has an elongated slit 31 through which the blade penetrates. Instead of moving the motor parallel to the axis of its shaft, the chute may be movable in this direction to make the necessary adjustments, in which case a second chute and cutting blade may be furnished at the opposite end of the motor shaft.
Patent GB-556562-A (GB)
Title: Improvements in or relating to methods of polishing the interiors of hollow articles, such as hollow poppet valves, and the improved hollow stemmed poppet valves resulting therefrom
IPC: B24B5/06
Filed: 1942-06-03
Abstract: 556,562. Honing hollow articles. THOMPSON PRODUCTS, Inc. June 3, 1942, No. 7569. Convention date, Dec. 20, 1941. Drawings to Specification. [Class 60] A method of polishing the interiors of elongated hollow articles, and particularly the stems of poppet valves, comprises rotating a polishing tool inside the article to remove scratches left in by the reaming tool and thereafter reciprocating the tool axially to remove any remaining circumferential scratches. The surface may be subjected to a series of alternate operations ending with the reciprocatory step.
Patent GB-768138-A (GB)
Title: Electrically heated distillation stills
IPC: B01D1/00
Filed: 1954-03-16
Abstract: <PICT:0768138/III/1> An electrically heated distillation still of the kind comprising an evaporating vessel, a condenser and a vessel for receiving the condensate comprises a float responsive to the variation of level in each vessel and a switch operable by each of the floats for controlling the circuit of the heating means associated with the evaporating vessel, the two switches being connected in series, and the arrangement being such that the switch associated with the evaporating vessel is opened when the liquid falls below a predetermined level and the switch associated with the condensate vessel is opened when the level rises above a predetermined level. In a preferred embodiment, the evaporating vessel 1 of an all glass still is fitted with an electrical heating element 2 and a float chamber 4 containg a float 7 which on rising closes the micro switch 8.  Condensate vessel 9 is fitted with a similar float 10 which opens a normally closed switch 11 when the level in vessel 9 is above a predetermined level.
Patent GB-755659-A (GB)
Title: Suspension and transmission device for the rear wheels of a motor vehicle
IPC: B60G3/24
Filed: 1954-03-16
Abstract: 755,659. Spring suspensions. COMPAGNIE DE PONT-A-MOUSSON. March 16, 1954 [March 17, 1953; Jan. 29, 1954], No. 7583/54. Class 108 (2). [Also in Group XXXI] Relates to a suspension and transmission device for the rear wheels of a motor vehicle having wheels mounted independently of each other, of a known type comprising a central movement transmitting means which includes a differential the housing of which is fixed to the chassis frame of the vehicle, the two output shafts of this means being connected by universal joints to two cross-shafts to which the wheel-mounting members are directly keyed, and these cross-shafts being guided in the vicinity of the wheels by guide devices connected by suspension devices to the chassis frame of the vehicle. According to the invention in which each of the cross-shafts is bare and is journalled directly in a guiding device, each of the shafts is of a cross-section capable of transmitting torque to the wheel and axial thrusts, without buckling, or bending and is supported in the axial direction on a member held transversely of the chassis frame by a universal thrust bearing device the centre of which coincides with that of the universal joint which connects the cross-shaft to the corresponding output shaft, the universal thrust bearing device being adapted to transmit to the chassis frame through the output shaft the axial thrusts from the cross-shaft and wheel. In the arrangement according to Fig. 2 the road wheels 6 are carried by swinging live half-axles 10 which are connected through cardan joints 9 to differential output shafts 5 and each wheel is carried by a plate 16 rigid with the respective half axle, which is rotatably mounted on a head 19. A tubular part 20 of the head 19 supports one end of a thrust member 21, the other end of which is pivotally connected to a chassis frame member 2. A coil suspension spring 25 is located between each thrust member 21 and a bracket 26 on a frame member 1. In another arrangement, Figs. 3 and 4 (not shown), the cardan joint 9 also constitutes the universal thrust bearing device and the thrust member is arranged parallel to the frame member 1 to have a pivotal and sliding connection therewith. The thrust member is also connected to the frame member 1 by a rod lying in a plane parallel to that of the thrust member and pivotally connected thereto and to the frame member 1. A coil suspension spring is disposed between the head adjacent the road wheel and a bracket on the member 1. In a further arrangement, Fig. 5, a pair of thrust members 21b, 21c at each side of the vehicle, are pivotally connected to the frame member 1 and to a bearing housing 19b adjacent each road wheel, a coil suspension spring 25 being disposed between each member 21b and the adjacent frame member 1. The thrust members at each side may be of unequal length. In all arrangements springs other than coil springs may be used.
Patent GB-927297-A (GB)
Title: Improvements in faucets or cocks for controlling liquid flow
IPC: F16K5/04
Filed: 1961-03-02
Abstract: 927,297. Valves. M. LOMBARDI. March 2, 1961 [March 5, 1960], No. 7690/61. Class 135. A valve cock comprises a body 1 having an inlet 2, an outlet 3 and housing a rotatable valve plug 4. The plug is provided with a recess 6, in communication with the outlet, a transverse aperture 7 communicating with the recess and a port 8 whereby rotation of the plug varies the degree of registry of the port 8 and inlet 2. The port 8 preferably extends over 25 degrees of the plug periphery. Grooves 10 are provided on the plug to receive a single packing ring 11 which when fitted is of horseshoe shape.
Patent GB-1576482-A (GB)
Title: Apparatus for and method of soldering thin-walled tubes
IPC: B23K1/16
Filed: 1977-02-23
Abstract: The device has a soldering beam (1), which corresponds in its length to that of the tube (2) rounded beforehand and to be put down on it, a soldering arm (7) with a profiled soldering comb (10) of the same length, a first stop strip (12) for the outer longitudinal margin of the tube (2), and a second stop strip (4) for the inner longitudinal margin of the tube (2). The heat for the soldering of the longitudinal seam joint is produced by a torch (16) arranged at an angle to the side of the soldering comb (10). A solder tape (14) is inserted into the groove (13) between the overlapping longitudinal margins of the tube (2), after which the soldering comb (10) is lowered. At the same time, the stop strip (4) is displaced downwards and the stop strip (12) upwards. The soldering is effected from outside to inside by the ignited gas-air mixture. Thus a defect-free soldered seam joint extending over the entire surface of the overlap of the longitudinal margins is obtained. <IMAGE>
Patent GB-434954-A (GB)
Title: Improvements in funnels for use in centrifugal spinning machines for artificial silk
IPC: D01D7/02
Filed: 1934-03-12
Abstract: 434,954. Guide funnels for centrifugal spinning-machines. KIRKLESS, Ltd., and BENNETT, A., Tottington, Bury. March 12, 1934, No. 7728. [Class 120 (ii)] The guide funnels of centrifugal machines for spinning artificial silk are provided with enlarged outlet ends having a circular rim and sides so shaped that the thread does not contact therewith in passing from the bore to the rim. The ends may be of bellshape, Fig. 3, or conical, Fig. 5, with or without an internal extension a<1>, or it may be of any other shape so long as the rim is considerably larger than the aperture of the stem, and the thread does not contact with the sides. The Provisional Specification comprises also a tube of larger diameter than the standard with constrictions formed therein.
Patent GB-486691-A (GB)
Title: Improved insulating supports for electric conductors
IPC: H01B17/24
Filed: 1937-03-17
Abstract: 486,691. Insulators. RAHIM, A. March 17, 1937, No. 7865. [Class 36] Two insulators, each comprising a base part 1 and an outer part 5 between which a conductor is clamped, are attached to a post 2 by a single bolt 3 which also serves as the means for clamping the two parts of each insulator to the conductors. The bolt may have a hook-shaped end for embracing the outer part of one insulator, whilst the other end is screw threaded and receives a nut 9 adapted to press on a hook or finger 7 which is slidably mounted on the bolt and engages the outer part of the other insulator. The insulators are preferably constructed as described in Specification 412,712.
Patent GB-467692-A (GB)
Title: Improvements in or relating to electric discharge lamps
IPC: C09K11/02
Filed: 1936-03-17
Abstract: 467,692. Discharge lamps. GENERAL ELECTRIC CO., Ltd. (Patent Treuhand-Ges. f³r Elektrische Gl³hlampen) March 17, 1936, No. 7991. [Class 39 (i)] [Also in Group XI] An electric discharge lamp comprises means for exciting the neon spectrum by the passage of a discharge through a filling mainly or wholly of neon, luminescent material excited by the discharge to emit visible light and a coloured light filter located in the path to the observer of the light from both the discharge and the luminescent material, the filter being adapted to transmit a substantial proportion of red neon light. Preferably the discharge is pure neon at 1-5 mms. pressure, the luminescent material, for example calcium tungstate, emits blue light, and the filter is bright blue, for example a blue glass envelope on the inner surface of which the calcium tungstate is coated. The resulting light is then violet. The luminescent material may be in the form of letters. Cold or thermionic electrodes may be employed. The prior use, for producing violet light, of a helium discharge in a violet envelope or of a neon discharge continually supplied with hydrogen, is referred to and the use of neonmercury mixtures emitting an appreciable mercury spectrum is disclaimed. Specifications 276,018, [Class 39 (i)], 362,885, and 457,486 are referred to.
Patent GB-717437-A (GB)
Title: Lubricant composition
Inventor: BLOWERS FREDERICK FRANK
IPC: C10M169/00
Filed: 1952-03-28
Abstract: A lubricating composition, suitable for use on the external controls of aircraft, comprises a major proportion of mineral lubricating oil and minor proportions each of an oil-soluble viscosity index improver (which is a polymeric material having a molecular weight in the range 8,000 to 25,000 Standinger, particularly polyisobutylene or depolymerized synthetic rubber), an oil-soluble tackiness agent (which is a polymeric material having a molecular weight in the range 40,000 to 120,000 Standinger, particularly polyisobutylene or depolymerized synthetic rubber) and an oil-soluble synthetic lubricating oil containing an esterified carboxyl group in the molecule.  The synthetic lubricating oil is preferably a simple ester, diester, partial ester or complex ester formed from one or more C10-C18 organic mono- or poly-carboxylic acids and one or more C3-C9 mono- or polyhydric alcohols.  Thus, the ester may be formed from two mols. of a monohydric alcohol and one mol. of a dicarboxylic acid, for example dinonyl sebacate. Alternatively, it may be formed from equimolecular proportions of a monohydric alcohol and a monocarboxylic acid, for example isopropyl oleate.  In an example, a lubricating composition is prepared from mineral lubricating oil, a concentrate of polyisobutylene (M.W. about 10,000) in mineral oil, a concentrate of polyisobutylene (M.W. about 100,000) in mineral oil, and dinonyl sebacate.  For comparison purposes, a similar composition is described from which the dinonyl sebacate is omitted.ALSO:A lubricating composition, suitable for use on the external controls of aircraft, comprises a major proportion of mineral lubricating oil and minor proportions each of an oil-soluble viscosity index improver (which is a polymeric material having a molecular weight in the range 8,000 to 25,000 Staudinger, particularly polyisobutylene or depolymerized synthetic rubber), an oil-soluble tackiness agent (which is a polymeric material having a molecular weight in the range 40,000 to 120,000 Staudinger, particularly polyisobutylene or depolymerized synthetic rubber) and an oil-soluble synthetic lubricating oil containing an esterified carboxyl group in the molecule.  The synthetic lubricating oil is preferably a simple ester, diester, partial ester or complex ester formed from one or more C10-C18 organic mono- or poly-carboxylic acids and one or more C3-C9 mono- or poly-hydric alcohols. Thus, the ester may be formed from two mols of a monohydric alcohol and one mol of a dicarboxylic acid, for example dinonyl sebacate.  Alternatively, it may be formed from equimolecular proportions of a monohydric alcohol and a mono-carboxylic acid, for example isopropyl oleate.  In an example, a lubricating composition is prepared from mineral lubricating oil, a concentrate of polyisobutylene (M.W. about 10,000) in mineral oil, a concentrate of polyisobutylene (M.W. about 100,000) in mineral oil, and dinonyl sebacate.  For comparison purposes, a similar composition is described from which the dinonyl sebacate is omitted.
Patent GB-116279-A (GB)
Title: Improved Manufacture of Acetic Acid.
Inventor: UTHEIM SVERRE
IPC: C07C51/235
Filed: 1918-05-13
Abstract: 116,279. Utheim, S. June 1, 1917, [Convention date]. Acetic acid.-In the manufacture of acetic acid by treating acetaldehyde with oxygen under pressure, the aldehyde is supplied to a confined reaction space separately from the oxygen and in limited quantities as required, in order to avoid explosions. Using the apparatus shown in Fig. 1, liquid aldehyde containing a little acetic acid is pumped from a vessel 1 to the cylinder 3 which carries a series of narrow pipes 5 of silver or aluminium which serve as oxidation chambers. The liquid aldehyde fills the cylinder 3 and rises in the tubes 5. The pipes 5 are connected at top by a tube 8 to which oxygen is supplied under pressure. The cylinder 3 and tubes 5 are enclosed in separate heating-baths 4, 6. The acetic acid formed flows down into the cylinder 3 and away by pipe 11. With the apparatus shown in Fig. 2, liquid aldehyde from vessel 1 flows first through a cooler 3, which thus serves as a liquid trap, and is then vaporized in the heater 4; the vapours enter the oxidation pipes 5 which are enclosed in a heating-bath 7, and are supplied with oxygen by pipe 8. The condensed acetic acid flows down the inclined pipe 8 to vapour trap 12 and out by pipe 11. The temperatures employed vary inversely as the total pressures ; for pressures of from 3 to 15 atmospheres, the temperatures are from 70 to 30‹ C.
Patent GB-872770-A (GB)
Title: Resilient mounting
Inventor: PAINTER GILES W
IPC: F16F1/373
Filed: 1960-03-07
Abstract: 872,770. Resilient mountings. LORD MANUFACTURING CO. March 7, 1960, No. 8041/60. Class 108(3). A resilient mounting comprises spaced supporting and supported members with a body of rubber or like material between them in which is embedded a floating member with two extended surfaces arranged at an angle to each other and spaced from and extending along corresponding extended surfaces of the supporting and supported members. In Fig. 2 is shown a mounting comprising a disc-like supporting member 2, a tubular supported member 1, a block of rubber 5 and a floating member 6 with tubular portion 7 spaced from member 1 and flange portion 8 spaced from member 2. Fig. 1 shows an installation utilizing a pair of the resilient mountings back to back.