baber/WOPTO huggingface dataset:
Patent GB-257317-A (GB)
Title: Improvements in or relating to devices for emitting or receiving sound
IPC: H04R7/12
Filed: 1925-04-30
Abstract: 257,317. McLachlan, N. W. April 30, 1925. Diaphragms; loud-speakers ; magnetic instruments. - Relates to devices for emitting or receiving sound, such as loud-speaking telephones, microphones, and gramophones provided wtih large diaphragms. According to the invention the diaphragm is constructed with a central part in the form of a straight or curved sided cone and an outer flat part, and is made of cloth, " doped " or impregnated with a substance such as a solution of celluloid. Means are provided for adjusting the tension of the diaphragm, and, in the application to a telephone, instrument, for resiliently mounting the receiver or transmitter, the vibrating member of which actuates or is actuated by the diaphragm. The Figure shows a loud-speaker, in which a " doped " cloth diaphragm D is secured peripherally between two wooden or metal rings C, E, screwed together. The ring C is channelled, and in it is located a ring F which bears on the diaphragm and can be adjustably drawn into the channel by means of screws P, so as to vary the tension of the diaphragm. The extent to which the diaphragm is doped may be graded, falling off to zero or a low value at the edge. After doping with celluloid solution, a coat of " aeroplane dope may be applied. The diaphragm may be insulated from its supporting rings, or from the tensioning ring, by felt &c. The electromagnetic receiver M is freely suspended from the rings C, E by adjustable springs. S, the natural frequency of which is low. When a receiver of the reed type is used, the reed is fixed to the apex of the diaphragm by a connecting piece of duralumin, brass, or steel. A silk front K is provided, which is glued to an outer ring R and serves as an additional support for the telephone receiver, being attached to a ring screwed to the receiver. A flat or curved. sound-reflector may be mounted adjacent to the diaphragm, and its position may be adjustable. A plurality of diaphragms, or a plurality of operating or actuated devices with interconnected vibrating systems may be employed each having a different natural frequency, and when two diaphragms are employed these may be arranged one within the other or arranged apex to apex.
Patent GB-1342554-A (GB)
Title: Box and a set of parts therefor
IPC: B65D6/26
Filed: 1972-03-10
Abstract: 1342554 Clamps; turn-bolts LUWA AG 10 March 1972 [23 March 1971] 11315/72 Headings E2A and E2B [Also in Division B8] A clamp 30, Figure 7, for clamping a profile member 12 to a cornerpiece 14 comprises a U-sectioned member through which a bolt 46 freely passes to threadedly engage a deformable clamping plate 44 and to abut against an arm 50 of the corner piece 14.  Wall panels 16, Figure 3, having bent-over edge portions are fastened in grooves 13, 56 in a framework, by tongues 24 pivotally mounted on the wall panels 16 adjacent their bent-over edge portions.
Patent GB-294689-A (GB)
Title: Improvements in or in connection with plug and socket connectors for electric circuits, switches, fuses and the like
IPC: H01R13/453
Filed: 1927-04-29
Abstract: 294,689. Arnold, C. L., and M. K. Electric, Ltd. April 29, 1927. Two-part couplings; plug couplings; prev e n t i n g sparking, means for.-The fixed contacts, such as sockets 2, are protected, when the movable contacts 10 are withdrawn, by a cap 4 of insulating material made in two or more parts drawn together by resilient means such as a garter spring 7 to cover the contacts 2. Each socket may have a separate shield which may have a shoulder 20, Fig. 9, to form a rocking support and a metal lining 19 that makes contact both with the plug and the socket and maintains the circuit after the contacts have separated to prevent sparking between the plug and socket. Both contacts may be covered by a single cap 4, Fig. 8, having a central projection 11 on which the cap rocks laterally being maintained in a symmetrical position by springs 12. If pressure is applied to one side only the cap is tilted as shown, and projections 14, 15 on the two parts of the cap enter narrow recesses 16, 18 that prevent the cap opening. The resilient means may be mounted on the base or cover of the device.
Patent GB-649596-A (GB)
Title: Improvements in carrier-wave telephone system transmitting arrangements
IPC: H03C3/34
Filed: 1948-04-26
Abstract: 649,596. High-frequency transmission systems. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. April 26, 1948, No. 11456. Convention date, April 29, 1947. Drawings to Specification. [Class 40 (iv)] [Also in Group XL (c)] In a carrier wave telephony transmitting arrangement in which speech and a carrier wave are fed to a carrier suppressing modulator, and signalling, e.g. dialling pulses, effected by keying the carrier across the output of the modulator, the carrier during signalling is applied to the modulator output through a network phase rotating it through 90 degrees. Undesired voltages following a pulse due to reflection from the input of the modulator are thereby avoided. A ring modulator is used transformer-coupled to a transmission line including a single side-band selector and the carrier during keying is applied across the transformer primary.
Patent GB-871381-A (GB)
Title: Improvements in or relating to electromagnetic waveguides
Inventor: BELL GEORGE
IPC: H01B3/00
Filed: 1958-04-10
Abstract: A composition consists of powdered fused silica or quartz and powdered polyethylene in a minor amount.  The silica preferably consists of at least 80% by weight of particles, the largest diameter of which is between 0,15 and 0,3 millimetres and less than 10% in which the diameter of the particles is below 0,15 millimetres.  The size of the polyethylene particles is less than 0,1 millimetre.
Patent GB-125842-A (GB)
Title: Improvements in Junction Boxes and the like for Electric Wiring Installations.
IPC: H02G3/06
Filed: 1918-07-12
Abstract: 125,842. Boothroyd, G. S., and Callender's Cable & Construction Co. Julv 12, 1918. Junction boxes for cables not enclosed in conduits are divided longitudinally into two parts and the parts are held together without screws by spring clips, rings, or collars l which are sprung over the divided cable nozzles c. The meeting faces of the two parts of the box are grooved to take a rubber gasket, and the cables pass through rubber bushes f held in recesses in the nozzles. The lower half of the box is secured to a wall or ceiling by screws k passing through lugs j.
Patent GB-937393-A (GB)
Title: Coupling means for the detachable assembly of component parts of apparatus
IPC: G03B17/56
Filed: 1962-03-26
Abstract: 937,393. Fastenings. AGFA A.G. March 26, 1962 [March 29, 1961], No. 11502/62. Class 44. A coupling means for camera attachments comprises a recess in the camera body 1 having a ramp 2, a groove 3 and a conical headed spring-loaded element 4, and a coupling part 7 having a vertical dove-tailed recess 11 for sliding on to the element 4, and a projection 10 which engages the ramp 2 when the coupling part 7 is inserted in the recess and lifts the element 4 against the spring tension until the projection 10 drops into the groove 3 and thereby secures the coupling part 7 against accidental withdrawal.
Patent GB-332200-A (GB)
Title: Improvements relating to automatic telephone and like remote control systems
IPC: H04Q1/36
Filed: 1929-04-15
Abstract: 332,200. Siemens Bros. & Co., Ltd., and Christian, D. A. April 15, 1929. Automatic exchange systems. - A repeating relay A operates contacts in both sides of an outgoing loop, so as not to be affected by surges in the loop. On seizure of the repeater, relays A, I, MD, B are energized in turn. During each digit C is energized, and at the first digit PG is energized in parallel with C and locks itself up. When the subscriber answers, D operates and cuts out MD, which slowly falls back and closes the metering circuit d. During release, C is energized for a moment to keep the junction guarded. During busy-flash, relay I intermittently falls back; if the calling subscriber clears during a flash period C is energized and holds MD, and after a moment B falls back and continues to hold MD. and also holds I over the upper loop wire until the flash period ends, when I falls back and releases MD, which releases C to free the junction. On a call to a manual board, battery is fed back over both sides of the loop so that D is not operated nor MD released, and when the calling subscriber clears, C is operated and I is energized over the upper loop wire and holds MD to hold C, so that the connection is maintained until the operator unplugs. Relay PG controls a lamp PL which is lit when the junction is seized, extinguished when dialling commences, and is lit again if the called but not the calling subscriber clears.
Patent GB-452972-A (GB)
Title: Shaving brush and the like and method for producing the same
IPC: A46B15/00
Filed: 1936-04-17
Abstract: 452,972. Brushes ; massage. LEDERER, R., 9, Mariahilferstrasse, and LOWY, R., 4, Karl Schweighofergasse, both in Vienna. April 17, 1936, No. 11061. [Class 19] [See also Group VI] A shaving or like brush with rubber massaging pins 8 surrounding the bristle body 1, is characterized in that the pins 8 enclose the bristles and hold them against excessive spreading. In a modification, the pins 8 are interconnected half way up their length. The upper ends of the bristles 1 are inserted in a cup and the free ends are fixed in a block 2 which is inserted in a threaded member 3 and vulcanized thereto. After use, the brush can be unscrewed from the hollow handle 7 and placed with the bristles inside the handle.
Patent GB-1537460-A (GB)
Title: Thrust bearing
IPC: F16C17/06
Filed: 1975-03-20
Abstract: 1537460 Bearings GLACIER METAL CO Ltd 19 March 1976 [20 March 1975] 11685/75 Heading F2A A thrust bearing comprises a housing containing an annular ring of thrust pads 14 each mounted to be capable of tilting on its own pillar 12, the pillars being located axially against a wall of the housing without being capable of tilting, and circumferentially by a cage ring 10, and the pads being located circumferentially by their mounting on their pillars. The pillars are located in apertures in the ring 10. There may be a rubber pad between the pillars and the wall. The rear face of each pad contains a recess to accommodate the end of the pillar, and either the pad or the pillar has a radially directed rib 15 to permit tilting movement of the pad. Each pad may be formed or provided with flanges 17, 18 for circumferential location. A stop plate 19 is also provided. In a further embodiment (Fig. 4), each pillar comprises a piston and cylinder arrangement 23, 24. An internal chamber 27 closed by an elastomeric diaphragm 28 is filled with hydraulic fluid under pressure through a line 32. Any fluid leaking past the diaphragm can be withdrawn from a space 33 through a line 34. A common source provides fluid to the chambers 27 in all the thrust pillars so that each will have the same load urging the member 23 away from the wall 13 towards the underside of the pad 14. Thus each pad automatically takes its equal share of total thrust load.
Patent GB-845483-A (GB)
Title: Buffer mechanisms
IPC: F15B15/22
Filed: 1958-04-14
Abstract: 845,483. Cartridge-actuated fastener driving tools. OLIN MATHIESON CHEMICAL CORPORA - TION. April 14, 1958 [April 12, 1957], No. 11790/58. Class 119. [Also in Group XXIII]. A buffer mechanism for cushioning the impact of a piston on a cylinder wall comprises a piston and cylinder having complementary tapers, the cylinder having a reduced axial bore at the apex of the tapered surface and being radially resilient in the region of the impacting surfaces. As shown, a piston 13 having an extension 17 of smaller diameter is slidable in a cylinder having, a tapered portion 19 which is complementary to a tapered portion 16 on the piston. The portion 19 has a number of radial slots 22 and may be bound on the outside with a composite band of glass fibres and plastic material. The angle α of the taper on the cylinder may be up to 3 degrees greater than the angle # of the taper on the piston. The tool may be operated by an explosive cartridge, as shown, or by compressed air.
Patent GB-119881-A (GB)
Title: Improvements in and relating to Fabric Dyeing Processes.
Inventor: THOMPSON WILLIAM PHILLIPS
IPC: D06P5/20
Filed: 1917-08-17
Abstract: 119,881. Thompson, W. P., (PlantÚ, V.). Aug. 17, 1917. Fabrics, treating.-In dyeing piece goods or garments of wool, silk, or velvet, by means of basic dyes dissolved in carbon tetrachloride (with or without alcohol) with the aid of a mordant prepared from a mixture in specified proportion of triolein, gallic acid, alcohol, and aqueous ammonia, an electric current is passed through the dye-bath; for this purpose the goods are placed in an iron wire basket E immersed in dye liquid in an iron vat A provided with leads B, C.
Patent GB-959897-A (GB)
Title: Ejection of airmen from aircraft
IPC: B64D25/10
Filed: 1961-03-30
Abstract: 959,897. Aircraft ejection seats. J. MARTIN. March 30, 1962 [March 30, 1961; June 2, 1961; June 13, 1961], Nos. 11865/61, 20041/61 and 21322/61. Heading B7G. [Also in Division F3] An aircraft seat ejection system comprises an ejection gun (not shown) for initial ejection of the seat from the aircraft in a predetermined direction (relatively to the aircraft) and a rocket motor independent of the gun, for producing a thrust vector substantially aligned with the predetermined direction, and means for adjusting the position of the thrust line of the rocket motor relatively to the seat, while preserving its direction, so that the thrust line may pass substantially through the centre of gravity of the seat and its occupant. In one embodiment, Fig. 2, the seat has a rocket motor pack beneath the seat pan as in Specification 920,545, the spine of the pack being slidably received in slots 41 in brackets 12 on the seat. The igniting cartridge breech tube 31 is slidable relatively to the spine, and is supported from the seat by a bracket 13. The pack, and hence the line of thrust of the nozzles 19, is movable fore-andaft relatively to the seat by rotation of a knurled nut 38. A window in a strip 44 on the bracket 12 co-operates with a scale 43 on the motor pack to show the position of the pack, preferably in terms of the pilot weight moment as indicated by the test seat of Specification 959,900. Alternatively, the pack may be movable by a lockable hand lever on the seat, Fig. 6 (not shown), or may be locked to the seat by pins inserted into co-operating apertures on the spine and on the seat, Fig. 7 (not shown). In another embodiment, Fig. 9, a pair of rocket motors 60 are mounted behind the seat back, each communicating through an elbow 63 with a sliding nozzle 65, which can be locked in any of a plurality of positions by insertion of pin 67 into apertures 71 in a fixed sleeve 68 so as to pass through a hollow cross-head 70 on a rod 66 attached to the nozzle. The firing mechanism with its cocking and releasing sear 62 are located at the upper end of the motor. In a modification, Fig. 11 (not shown), the nozzle is slidable by rotation of a knurled nut, and the firing mechanism is at the front of the sleeve 68, and slides with the nozzle, hot gases from the firing mechanism passing through the sleeve of nozzle 65 and elbow 63 to ignite the rocket motor charge. Specifications 583,257, 640,520, 652,131, 711,234, 889,689 and 959,899 also are referred to.
Patent GB-441178-A (GB)
Title: Manufacture of azo-dyestuffs
Filed: 1935-04-17
Abstract: Azo dyes are prepared by coupling a nitramine of the formula <FORM:0441178/IV/1> wherein the p-position to the nitramine group is free, in a neutral or weakly alkaline solution with a diazo compound which is not at all or only very gradually changed by dilute alkalies.  In an example the sodium salt of the nitramine from a -naphthylamine is coupled with diazotized o-anisidine in presence of sodium carbonate.  The alkaline solution of the product may be further diazotized by means of acid and alkali nitrite and used as described in Specifications 430,167 and 430,222; for example cotton may be printed with a mixture of the sodium salt of the new azo-dye, alkali nitrite and 2.3-oxynaphthoic acid anilide, dried, passed through an acid bath and, if desired, treated with an acid-binding agent (black-violet tints); black tints are obtained by substituting the b -naphthylamide for the anilide.
Patent GB-499701-A (GB)
Title: Improved electrical resistance
IPC: H01C1/146
Filed: 1938-04-20
Abstract: 499,701. Wire resistors ; mounting terminals. S.E.C.I. SOC. ELETTROTECNICA CHIMICA ITALIANA. April 20, 1938, No. 11876. Convention date, April 20, 1937. [Classes 37 and 38 (i)] An enamel-coated resistor comprises a tubular ceramic former c upon which the wire is wound and secured to a connecting lead d, the lead being bent at f to engage by its own resiliency the inner surface of the former, and being provided with a loop g to which the resistance wire is attached preferably by welding. The resistor and terminal leads are coated with an enamel surface i.
Patent GB-761340-A (GB)
Title: Improvements in or relating to two-stroke cycle internal combustion engines
IPC: F02M69/00
Filed: 1952-05-12
Abstract: 761,340. Two-stroke engines. ZIMMERMANN, H. G. May 12, 1952 [May 10, 1951], No. 11903/52. Classes 7 (2) and 7 (3). A two-stroke engine having air scavenging means for the or for each working cylinder the means being operative prior to the injection of the air fuel mixture, comprises at least one unit consisting of a working cylinder provided with a working piston and a charging cylinder provided with a charging piston, the working and charging cylinders being mounted on a common crank case and the pistons operating on a common crank-shaft, the charging cylinder and piston being adapted to draw in, compress and transfer the fuel air mixture to the working cylinder, both the working and charging pistons being adapted to draw fresh scavenging air into the crank case and to deliver it to the working cylinder, the working and charging cylinders being connected by a port having obliquely disposed walls, the port being closed and opened by means of a slide valve operating in sychronism with the charging piston in such manner that after completion of the air scavenging process the port is uncovered and the fuel air mixture is transferred by the charging piston from the charging cylinder to the combustion chamber of the working cylinder with a rotational motion when the working piston is approaching the top dead centre. Mixture compressed in a cylinder 3 is transferred into a working cylinder 10 through a port 11 controlled by means of a sleeve valve 1 attached to a piston 2 the mixture entering the cylinder 3 through a port 19. Scavenging air enters by a port 20 controlled by the lower edge 21 of the piston 2 and passes to the cylinder 10 through a port 24. The sleeve valve works over a stationary piston 4 which is hollow and cooled internally by air or liquid. Transfer through the port 11 commences when scavenging has been completed. The port 11 is closed by the sleeve valve when the piston 2 reaches its top dead centre. The upper edge 12 of the port 11 is level with or slightly lower than the earliest possible position of ignition advance. The port 11 can be inclined as shown in Fig. 4 so as to produce a whirling motion of the charge. The sides of the port may be parallel to the crank-shaft axis. Sufficiently large wall cross-sections are provided on the charging piston and charging cylinder for facilitat-' ing the withdrawing of heat from the transfer port to the outside of the charging cylinder.
Patent GB-710504-A (GB)
Title: Improvements in devices for feeding articles to wrapping machines
Inventor: ROSE ALFRED GERMAN
IPC: B65B35/24
Filed: 1951-05-23
Abstract: 710,504. Endless conveyers. ROSE BROS. (GAINSBOROUGH), Ltd. May'15, 1952 [May 23, 1951], No. 12013/51. Class 78 (1) Articles 15 are fed along a platform 13 to a position adjacent a folding station 14 of a wrapping machine by pusher elements 18 pivotally mounted on bearing members 181 attached to an endless chain 11 and projecting upwards through a slot 19 in the platform 13. Each element 18 has an arm 21 terminating in a projection 22 which engages in a guideway 23 in a member 20 so as to maintain the element in a conveying position. Adjacent the folding station 14. the guideway is shaped as shown at 24 so as to cause the elements 18 to pivot backwards clear of an article as it moves from the platform onto a reciprocating pusher 16 which delivers it to the folding elements of the wrapping machine where a wrapper is folded about the article as described in Specification 701,500, [Group XVII] The guideway maintains the elements 18 in retracted position until they have moved clear of the pusher 16 and then returns them to the conveying position. Whilst the elements pass along the guideway 23 adjacent the platforms 13, tail pieces 28 projecting from the bearing members 181 engage a track 27 parallel to the guideway 23 so as to maintain the elements substantially rigid during their passage over the platform.
Patent GB-884750-A (GB)
Title: Improvements in steam separators
IPC: B01D45/16
Filed: 1959-04-09
Abstract: 884,750. Centrifugal separators. HUET, A. April 9, 1959 [June 9, 1958], No. 12021/59. Class 23. A steam separator comprises two separators in series, the first separator b comprising a pair of semi-elliptical plates inclined to each other and to a transverse plane through the separator, and the second separator comprising a helical surface O forming in conjunction with a conduit p a passage for the steam. The larger droplets of water separated by the first separator are discharged through a pipe d, and the smaller droplets separated by the second separator pass through slots h to discharge through a pipe i. The helical surface may be restricted to either the convergent or the divergent part of the conduit, and the conduit may be cylindrical. In a modification the second separator comprises a plurality of small separators each comprising a conduit containing a helical surface.
Patent GB-735873-A (GB)
Title: Improvements in aluminium alloys having high corrosion resistance
Inventor: SKERREY ERNEST WILLIAM
IPC: C22C21/00
Filed: 1952-05-12
Abstract: An alloy combining good corrosion resistance with good mechanical strength is formed of super-purity Al, i.e. at least 99.95 per cent purity, with 0.2-2.15 per cent of pure Mn, i.e. at least 99.5 per cent purity.  Preferably the resulting alloy contains less than 0.01 per cent Si, less than 0.01 per cent Fe, and less than 0.005 per cent Cu.  Specification 735,852 is referred to.