baber/WOPTO huggingface dataset:
Patent GB-283602-A (GB)
Title: Improvements in and relating to thermionic amplifying means and associated electrical systems
IPC: H04M1/60
Filed: 1926-07-13
Abstract: 283,602. Rickets, W. J., and Smith, E. E. July 13, 1926. Amplifying systems for telephony. - In a loud speaking telephone system, especially for ships, high or low tension currents for the amplifiers are derived from the lighting mains, or the high tension current is derived from a battery &c. and the low tension from the microphone battery, the currents in either system being switched on when a speaking or ringing key is thrown at a distant station by a relay acting as a coupling choke in the grid circuit of the amplifier. The outstation-buzzers may act also as feed-chokes for the microphones. The amplifiers are provided with spare valves which become connected up automatically as described in Specification 280,841, this condition being signalled to the central office if desired. Direct call systems. When the ringing key A. Fig. 1, or speaking key 35 at the central station is thrown, relay 15 at the out-station connects up the common high and low tension supply wire. The ringing key also energizes a relay 20 which operates buzzer-wise by cutting in a reverse winding. Speech and buzzer potentials developed across the relay 15 influence the grid via a condenser 16 and operate a loud-speaker 11. In a modification the signals are fed to the valve through an auto-transformer as described in Specification 218,066, [Class 40 (v), Wireless signalling &c.]. The amplifier station calls up by means of a push 31 which rings the bell 32, and connects up his microphone by means of a key 36. The telephone receiver 28 responds to speech and signals independently of the amplifier. In a modification, Fig. 4, in which the plate current is derived from a special battery and the filament current from the microphone battery, tho buzzer-relay 20 replaces the feed choke 37. When the microphone key is thrown, the relay 20 pulls up and since the reverse winding is disconnected at 60 does not buzz. The leads 21 in this figure are transposed. Exchange system. Fig. 5 shows the connection of an outstation like that shown in Fig. 4 to an exchange switchboard. Operation of the calling key gives lamp and bell signals. The operator's set is shown at the right of the figure. Thermionic valve circuits. In the system shown in Fig. 1, both plate and filament are supplied from high-tension mains, a choke 2 and condenser 13 being provided for smoothing and the filament circuit including resistances 3, 6 the latter of which furnishes grid bias. In the systems shown in Figs. 4 and 5, the plates are fed from a battery and the filaments and grids from the source that supplies the microphones.
Patent GB-1039154-A (GB)
Title: Symmetrical bridle wires
IPC: G10C3/16
Filed: 1964-04-28
Abstract: 1,039,154. Pianofortes. WURLITZER CO. April 28, 1964 [May 2, 1963], No. 17580/64. Heading G5J. A keyboard musical instrument in which a hammer 46 (Fig. 1) pivoted on a butt knuckle 48 strikes a string 28 on depression of a key 32 due to movement of a sticker 56 which actuates a wippen 62 and a fly 70, comprises a bridle wire 86 which consists of an elongated symmetrical shank 100 (Fig. 2) having a free end portion 106 adapted to be passed through a co-operating hole in a bridle strap 84 (Fig. 1). The bridle wire has a formation 110 on the shank defining a radial enlargement adapted to prevent the strap 84 from moving along the shank towards the other end portion 102. The formation on the shank of the bridle wire 86 may be in the form of an annular plate, a cylindrical collar or a knurled collar (Figs. 6, 7, 8, not shown) or it may comprise a plurality of flattened protrusions (Figs. 3, 4, 5, 9, 10, not shown). In order to prevent accidental migration of the strap towards the end 106 of the shank when the bridle wire has been assembled with the co-operating wippen 62 a bendable free end portion 106a (Fig. 4, not shown) or a second formation 112 (Fig. 2) which allows the strap to be forced on to the bridle wire between the two formations may be provided. A damper 96 which may be provided for each string of the keyboard instrument may be arranged to retract from contact with its string immediately in advance of the hammer 46 striking the string.
Patent GB-145548-A (GB)
IPC: G02B13/02
Filed: 1920-06-29
Abstract: 145,548. Zeiss, C., [Firm of]. June 16, 1919, [Convention date]. Lenses. - Telephoto lenses of the type having a collective front combination and a dispersive back combination, the front combination consisting of two lenses separated by a dispersive air space and the back combination consisting of two lenses cemented together, has the cemented surface of the back combination collective. The difference between the refractive indices of the glasses at the cemented surface is at least 0.82; and the absolute value of the radius of the cemented surface does not exceed the focal length of the objective. Constructional data are given in the Specification.
Patent GB-1181809-A (GB)
Title: Improvements in and relating to Safes, Chests and the like
IPC: E05G1/00
Filed: 1967-04-18
Abstract: 1,181,809. Safes. ETABS. BAUCHE (COFFRES-FORTS BAUCHE ET NICOLLE & CIE). 18 April, 1967 [25 April, 1966; 21 Sept., 1966], No. 17671/67. Heading E1A. In a refractory safe or chest having an air gap disposed between the safe body and the door 57 in its closed position, a heat shield or screen 56 is resiliently mounted as by springs 64 on the door to remain applied against the frame of the door aperture in the body in spite of distortions due to heat. The member 56 may be retrained against the action of the springs in an inoperative position by fusible wires, see Fig. 4 (not shown). For minor modified mountings and use of seals the Specification and remaining drawings (not shown) should be referred to.
Patent GB-689916-A (GB)
Title: Improvements relating to optical lenses
IPC: G02B9/34
Filed: 1950-07-15
Abstract: 689,916. Optical objectives. WRAY (OPTICAL WORKS), Ltd., and WYNNE, C. G. Oct. 10, 1951 [July 15, 1950], No. 17753/50. Class 97 (i). An objective comprises front and back convergent meniscus components having between them two divergent meniscus components at least one of which is compound, all components being concave towards the centre of the lens and the axial separation between the inner concave surfaces of the divergent components being thus greater than one half the diameter of the entrance pupil of the lens at the full aperture for which it is corrected, which the axial thickness of each divergent component is less than that of the adjacent convergent component. Numerical data for one example of the lens shown are given and data for one example of a lens in which the front divergent component is a doublet while the other three components are simple. Specification 575,076 is referred to.
Patent GB-231724-A (GB)
Title: Improved variable-speed governor
IPC: G05D13/00
Filed: 1924-07-25
Abstract: 231,724. Chorlton, F. O. L. July 25, 1924. Centrifugal governors.-The fulcrum t of a spring-loaded lever n is connected to an inclined screw-threaded spindle x so that actuation of the latter effects movements of the fulcrum and also alters the distance between the governor balls, to set the governor for different speeds.
Patent GB-661433-A (GB)
Title: Improvements in and relating to the sealing of containers by closures having peripheral flanges
IPC: B65D41/16
Filed: 1949-07-06
Abstract: 661,433. Stoppers. HUNTER, Ltd., T., and YOUNG, S. D. June 2, 1950 '[July 6, 1949] No. 17891/49. Class 125(iii) A cap, of the kind provided with a peripheral flange b' adapted to be deformed to engage a peripheral rim or lip a<SP>1</SP> about the mouth of a container such as a metal basin α and seated in position with the interposition of a gasket d, is provided with a series of slits c situated around the periphery of the flange b<SP>1</SP> to allow air to escape when the contents of the container are subjected to heat treatment. The slits c are disposed adjacent to the lower face of the gasket d.
Patent GB-593233-A (GB)
Title: Improvements in machines for roughing leather and like material
IPC: C14B1/48
Filed: 1945-07-13
Abstract: 593,233. Roughing leather. POCHIN, H. W., and DOVE, G. H. July 13, 1945 No. 18009. [Class 60] In a machine for roughing leather and like material, e.g. for roughing soles or other shoe parts, the leather is supported on a revoluble table e and is presented to the roughing- tool c by a tangentially arranged stationary guide l and a positively driven toothed or like feed wheel k<1> which engages the edge of the leather. The table e may be freely rotatable or may be positively driven, in which case the spindle on which the table is mounted is geared to the spindle of the wheel k<1>. The table e is preferably slightly convex and its axis is inclined so that the path of the work at the zone of operation of the tool c is substantially horizontal. The tool c is mounted in an arm b of a framework a and is driven through belting by a motor. The table is carried by an arm d which is adjustable about a pivot d' which includes differential screw means whereby the arm d and the table e thereon is adjustable along the pivot d<1>, the relative positions of the tool c and table e being correspondingly adjusted. The angular setting of the arm d on the pivot d<1> is determined by an adjusting- screw h carried by the arm b, the arm d being kept resiliently against the screw h by an adjustable spring-means which bears against, or is linked to, the underside of the arm d. The wheel k<1> and, in some cases, the table e are driven by the motor through belting and other gearing in the gear-box f. For operating on soles with a reduced waist, a tiltable work table may be provided as shown in Fig. 8. The table e is journalled in a casting m pivoted. at m<4> to the gear-box f. Arms m<2> extending downwardly from the casting m are connected by a pin m<3> passing through slotted lugs m<4> on the box f. The degree of tilting of the table is determined by adjusting screws m<5>, m<6>. In a further modification, the casting m carrying the table e is supported from the box f on pivoted links and the angle of tilting is footcontrolled by a treadle connected to the pivoted links. In an alternative construction, the angle of tilting is controlled automatically by a feeler against which the edge of the sole presses, the feeler being displaced according to the thickness of the leather. The fixed guide l may be replaced by a vertical guide roll.
Patent GB-198581-A (GB)
Title: Improvements in closed vehicle bodies
IPC: B60J7/16
Filed: 1922-06-30
Abstract: 198,581. Standard Motor Co., Ltd., and Maudslay, R. W. June 30, 1922. Opening tops.-In road vehicles having closed bodies in which the roof is provided with substantial apertures adapted to be closed by removable lids, the roof is provided with three apertures A, A<2>, A<3> normally closed by three lids B, B<2>, B<3>, which are interconnected by links C so that any one or two apertures may be uncovered and the lids superimposed as shown. A swing spring bolt D may be provided to secure the lids when superimposed and securing means are provided for fastening each lid in its aperture. The links may be connected to various parts along the lengths of the lids.
Patent GB-1007051-A (GB)
Title: Method for nitrogen-enrichment of molten steel covered with slag
IPC: C21C5/46
Filed: 1963-05-07
Abstract: Molten steel is enriched with nitrogen by blowing into the lower part of the covering slag layer either calcium cyanamide or a nitride which decomposes at high temperature to yield nitrogen, or a mixture of carbon with any of the above compounds, the addition being blown in a stream of nitrogen, or a gas inert to both metal and slag, or a mixture of nitrogen and such gas, under such conditions that nascent nitrogen is liberated by decomposition at the slag-metal interface. If calcium cyanamide is used, the calcium and carbon liberated serve to deoxidize the steel and slag, the resultant carbon monoxide having a beneficial stirring effect.  When the addition agent is free of carbon it is desirable to agitate the bath independently, as by blowing with a further stream of nitrogen, a gas inert to both metal and slag, or a mixture thereof.  The process may be carried out in an open-hearth or arc furnace, or a top-blown converter.
Patent GB-680854-A (GB)
Title: Improvements relating to the pivotal backs of chairs and the like
Inventor: GABB ARCHIBALD HORSFIELD
IPC: A47C7/48
Filed: 1950-07-20
Abstract: 680,854. Seats; furniture joints; resilient mountings. TAN-SAD CHAIR CO. (1931), Ltd. July 18, 1951 [July 20, 1950]. Classes 52(i) and 52(ii) In'a back rest for a chair &c. of the kind comprising a back rest involving a crossstrip frictionally jointed to the back rest uprights in such a manner that it automatically adjusts itself to the user's back there are provided at the swivel points rubber plugs &c. to act as a cushion and as control or provide for its resilient movement. The back rest b has a cross-strip b<SP>1</SP> which at each end is associated with a rubber plug c to which the upright a is connected. The upper end of the upright a is of semicircular formation and enters a slot c<SP>1</SP> of the plug c. A pin d passes through the plug and an aperture a<SP>2</SP> in the upright and engages the cross-strip b', the pin being of such a length as to cause the plug c to grip the end of the upright. The head d<SP>1</SP> of the pin d is seated in a recess c<SP>3</SP> and the aperture a<SP>2</SP> is provided with bevelled edges a<SP>3</SP> adapted, on swivelling of the back rest, to contact the pin d and so limit the swivelling.
Patent GB-628197-A (GB)
Title: Improvements relating to composite metallic articles
IPC: B23K20/227
Filed: 1947-07-09
Abstract: 628,197. Making composite strip. GENERAL MOTORS CORPORATION..July 9, 1947, No. 18092. Convention date, March 6, 1946. [Classes 83 (ii) and 83 (iv)] Working at specified temperatures; rolling; welding.-In uniting an aluminium or aluminium alloy strip to a metal backing strip, e.g. of steel, nickel, nickel-copper, chrome-iron or the like, the backing has one faced cleaned by sandblasting or the like, and both strips are heated to 910‹ to 1010‹ F., preferably 975‹ F. and welded by rolling to produce a reduction in the aluminium thickness of at least 30 per cent. The minimum reduction is 20 per cent at the higher temperature limit and below 910‹ F. greater reductions are produced. The aluminium 22 and cleaned steel strip 20 are fed into a reducing, e.g. hydrogen, gas furnace 21, united by rolls 24 therein and cooled in a chamber 28. Specification 628,198 is referred to.
Patent GB-456131-A (GB)
Title: Method of and means for determining the flow of water in steam boilers or the like
IPC: G01F1/64
Filed: 1936-06-30
Abstract: 456,131. Liquid resistances. BABCOCK & WILCOX, Ltd., and DAVY, C. H., Babcock House, Farringdon Street, London. June 30, 1936, No. 18148. [Class 37] [See also Groups XX and XIX] The direction and rate of flow of liquids in pipes is determined by introducing a fluid capable of effecting a change in the electrical characteristics of the flowing liquid and detecting such change by electrical methods. The rate of flow is determined from the time interval between the introduction of the modifying fluid and its arrival at the remote detecting devices and the direction of flow by reversing the points of introduction and detection. In the form shown, 1 is a tube connecting two headers 3, 5 of a steam boiler. A hole in the outer wall 4a of the header 5 enables a tube 24 for introducing a saturated solution of sodium sulphate to be inserted near one end of the pipe 1. A hole in the outer wall 4a of the header 5 enables an electrode 15, surrounded by, but insulated at 17 from, a metal shell 14, to be inserted near the other end of the tube 1. The electrodes 14, 15 form one arm of a bridge preferably connected to an alternating current source. A diagonal of the bridge contains a contact rectifier and a moving coil instrument.
Patent GB-351232-A (GB)
Title: Improvements in or relating to electro-dynamic soundreproducing devices
IPC: H04R9/06
Filed: 1930-06-13
Abstract: 351,232. Loud speakers. M U R KHAM, L. W. and BENNETT, D. T., 73, Gower Street, London. June 13, 1930, No. 18209. [Class 40 (iv).] In an electro-dynamic or moving coil soundreproducing device, in order to avoid trapping of air between the diaphragm 20 and the centre pole 12 or within the magnet casing, the magnet, which has an annular gap 16 of small width, is provided on the outer face of the centre pole with a cavity 13 from which bores 14 extend diagonally to the outer circumference. Preferably the portion of the diaphragm opposite the centre pole is of domed formation and the cavity between these parts contains light yielding material 30, such as cottonwool, for damping the movements of the diaphragm. A cylindrical former 28 on which the coil 27 is wound is attached to the internal surface of the diaphragm at the point where the latter merges into an annular flange 21, which is secured to a celluloid or like surrounding ring 22. The coil and diaphragm are clamped to a plate 17 having a domed central portion 18 by means of screws passing through a metal clamping ring 24 and through annular pasteboard washers 23. In turn the plate 17 is secured to the outer pole 11 of the magnet by means of screws 31 that pass through enlarged bores 32 in the plate 17 or into enlarged holes in the magnet, whereby adjustment of the plate 17 may be effected so as accurately to centre the coil 27 in the gap 16. At the central portion of the dome 18 the plate 17 is provided with a neck 19 for attaching a horn, while, in proximity to the flange 21 and ring 22, it is chamfered off at 26 to provide the necessary clearance when the diaphragm vibrates.
Patent GB-769574-A (GB)
Title: Improvements in signs
IPC: G09F13/16
Filed: 1954-06-22
Abstract: 769,574. Signs. PEARCE SIGNS, Ltd., and PEARCE, J. H. G. June 22, 1955 [June 22, 1954], No. 18302/54. Class 3 (2). An illuminated sign, Fig. 3, comprises a translucent or transparent panel having a bevelled surface 1 which is extended forwardly and outwardly as shown and treated to give it good daylight viewing properties as by an application of gold leaf or gold paint. In a modification, Fig. 4, the sign is made of metal and provided with a recess 6 and on opening 2 having straight, serrated or scalloped edges 4, a tubular lighting unit being arranged in the opening 2 or 6 and the reflecting surface 1 being bevelled as shown in full or dotted lines. In a second modification, Fig. 6 (not shown), the sign is moulded from coloured methylmethacrylate the bevelled edges and, if desired, the side walls being rendered opaque. The sign may comprise a metal casing, a light source and a panel of coloured methylmethacrylate, the panel or casing having a light reflecting bevelled edge, see Figs. 5 and 8 respectively (not shown). Again the sign may comprise a metal casing having a light source and a bevelled edge of stainless steel, see Fig. 7 (not shown). The sign may incorporate a bank of lighting units and illumination may be effected by electric lamps or neon or fluorescent tubes. Specification 732,142 is referred to.
Patent GB-574883-A (GB)
Title: Improvements in driving axles for vehicles
IPC: B60K17/16
Filed: 1943-11-04
Abstract: 574,883. Motor-vehible driving-gearing; axles. TIMKEN-DETROIT AXLE CO. Nov. 4, 1943, No. 18333. Convention date, Nov. 20, 1942. [Classes 79 (ii) and 79 (iv)] A motor vehicle axle comprises an axle casing H, axle shafts 14, 15 mounted therein, and driving shaft 24 and a countershaft 36 mounted in a housing C secured to the casing H, hypoid gearing 34, 35 being provided between the driving shaft and the countershaft so that the driving shaft is at a higher level than the countershaft, which is itself at a higher level than the axle shafts. The housing C is formed with a flange 22 bolted to the axle casing H at 23, the plane of the flange being inclined to the vertical as shown. The axle casing is formed with arms 12, 13 which are of rectangular formation, their upper and lower surfaces being horizontal so that the vehicle springs may be bolted to spring pads (not shown) mounted thereon, thereby avoiding the use of angularly-mounted spring pads.
Patent GB-444452-A (GB)
Title: Improvements in and relating to windshield cleaner
IPC: B60S1/06
Filed: 1935-06-28
Abstract: 444,452. Windscreen-cleaners. TRICO PRODUCTS CORPORATION, 817, Washing- ton Street, Buffalo, New York, U.S.A. June 28, 1935, No. 18526. Convention date, July 5, 1934. [Class 138 (i)] The actuating shaft of a windscreen-cleaner is journalled in the casing of the driving motor and has a floating driving connection with a driving member or piston which is oscillatable within the motor casing about an axis substantially coaxial with the pivotal axis of the actuating shaft. In the construction shown, the wiper arm 13 is formed with a bent end 23 which is engaged in a pocket formed by two sections of a fluid-pressure-operated piston. The piston, which is of the oscillating vane type, is provided with a pair of cupped packing members 1 reinforced on opposite sides by inner and outer plates 2, 3. The piston sections embrace a shaft 8 which extends into a chamber 12 and serves to operate valve mechanism controlling the admission of fluid pressure to the piston chamber 4. The shaft 13 is loosely mounted in bearings 14, 15 and its end 23 is guided by ribs 28 in the plates 2 of the piston, permitting adjustment of the shaft 13 independently of the piston.
Patent GB-816927-A (GB)
Title: Improvements in or relating to design-bearing or patterned material
Inventor: BATTY ERIC
IPC: C08L67/06
Filed: 1956-06-16
Abstract: Synthetic resin compositions comprise in stated proportions: a polyester resin, a pigment (ivory drop black or titanium dioxide), china clay, cobalt naphthenate and either cyclohexanone hydroperoxide or methyl ethyl ketone peroxide.  "Polyester resin" is defined as a poly-condensation product of a dihydric alcohol (e.g. propylene glycol) or alcohols and an ethylenically unsaturated dibasic acid (e.g. maleic acid) or acids with or without a saturated dibasic acid (e.g. adipic acid) or acids, the poly-condensation product being dissolved in an ethylenically unsaturated monomer (e.g. styrene). The compositions are used to make a design-bearing or patterned material (see Group XV), and may be polymerized with a mat or web of glass fibres for the purpose.  Uses.-Advertising signs, road signs, mural panels, wall or floor lining panels or tiles.