baber/WOPTO huggingface dataset:
Patent GB-417796-A (GB)
Title: Improvements in or relating to printing telegraph exchange systems, particularly with automatic switching operation
IPC: H04L12/12
Filed: 1933-04-12
Abstract: 417,796. Telegraph exchange systems. SIEMENS & HALSKE AKT.-GES., Siemensstadt, Berlin. April 12, 1933, No. 10994. Convention date, April 19,1932. [Class 40 (iii).] The invention relates to a telegraph exchange system in which the operation at the exchange which advises the calling subscriber that he may indicate or proceed to select the desired subscriber also bring into operation the motor of the calling subscriber. According to the invention the apparatus at the exchange or at the subscriber stations is modified to prevent the accidental operation of the telegraph transmitter at a subscriber station from producing impulses which may give rise to a faulty switching operation at the exchange. When, as shown in the known arrangement of Fig. 1 the calling key ET has been depressed and the preselector VW has found an idle outlet, test relay T operates, switching over at contacts t3, t4 the calling line to the line (or group) selector LW (or GW). At contacts t1 t2 battery B2 is substituted for B1 operating relay E. Relay U operates over contact e, switching in the motor M of the calling subscriber, and completing at contact u3 the circuit of the transmitter contacts SK. The subscriber's apparatus is modified as shown in Fig. 3 so that the calling key ET closes an additional pair of contacts which short-circuit the contacts SK of the transmitter. The key ET is held depressed for a predetermined minimum interval or until the motor has reached its normal working speed. In an alternative arrangement, Fig. 4, the contacts SK are normally short-circuited by the contact h of a relay H which is energized over contact u4 with a time-lag produced by a pneumatic or hydraulic dash-pot device. The contact h may be opened by a centrifugal device operated when the motor M runs up to its normal speed. In a further alternative, Fig. 5, the contact t3, Fig. 1, extending the transmission circuit to the group or line selector is replaced by the contact v of a relay V which is energized with a predetermined time-lag over the contact t3 of the test-relay. In this case accidental impulses produced during the initial rotation of the transmitter motor are suppressed at the exchange and do not pass to the line or group selector. In a further modification, Fig. 6 (not shown) the keyboard transmitter is locked by a bar which is released by an electromagnet energized over a contact operated centrifugally when the motor reaches its normal working speed. The keyboard transmitter shown in Fig. 2 has a universal bar 1 which on the operation of a key actuates levers 4, 6 and a rotatable latch 5 so that the nose of the detent 8 is removed from a cam 9 on the transmitter shaft 10. After the signal impulses have been transmitted an additional cam 16 raises the arm 6 so that the latch 5 moves forward and engages the end of the detent 8 when its lower arm is moved downwardly by the projection on the cam 9.
Patent GB-554965-A (GB)
Title: Improvements relating to packages
IPC: B65D75/38
Filed: 1942-08-06
Abstract: 554,965. Packaging; SALFISBERG, L. L. Aug. 6, 1942, No. 10994. [Class 94 (i)] A package comprises a flat bag having a transverse fold which closes the mouth, and a cover secured to one end of the bag and adapted to be folded around the bag and tucked into a fold. The bag A, Fig. 1, is formed of thin flexible material such as rubber hydrochloride, cellulosic material, metal foil, or preferably sheet material which is itself thermoplastic or has a thermoplastic coating. The bag consists of two opposed sheets joined along their sides and ends by heat and pressure to form a compartment 3 for the contents, the sealed areas being so arranged as to leave an extension 6 of the compartment 3 for the discharge of the contents. The bag is weakened or scored along a transverse line 8 to enable the end 7 to be torn off, and it is creased transversely at 9 so that the opened bag can be closed again by folding it along the crease. The bottom edge of the bag is secured by adhesive or by heat and pressure in a transverse fold near one end of a cover B formed of a strip of stiffer material which folds around the bag as shown in Fig. 3 and is secured by tucking the free end behind a flap 16 at the bottom of the bag. Instead of the end 7 being sealed it may be left open, and the cover may be provided with flaps of various forms which are folded over the bag before the cover is folded around it. The bag may be made with several separate longitudinal compartments so that it may contain different kinds of articles, and it may be folded in itself before the cover is folded. The edges of the bag and the cover may be reinforced by a protective frame secured within the cover and surrounding the bag.
Patent GB-309449-A (GB)
Title: Improvements in or relating to centrifugal compressors
IPC: F04D27/02
Filed: 1929-04-09
Abstract: 309,449. Siemens - Schuckertwerke Akt.-Ges. April 10, 1928, [Convention date]. Multi-stage compressors; controlling.-In a controlling arrangement for centrifugal compressors a change-over device is operated, when the compressor is near the pumping limit, to cause the medium to pass first through a group of compression stages normally used for higher pressures, and then through a group of compression stages for lower pressures, the cross sectional areas of the latter stages being then partly closed. The change-over device is arranged between the two sections of the compressor, and a check valve f is provided in the pressure main. The device normally connects the outlet b of the low pressure stage N to the inlet d of the high pressure stage H. The medium enters the suction pipe a, passes through the device, the high pressure stage H, the delivery branch e, and the valves o, f to the pressure main g. When the compressor is working near the " pumping " limit, the check valves f closes, and by a system of connecting rods the valve operates the shutters u and the valves r, n, w, so that these parts occupy the positions shown in Fig. 2. The medium from the suction pipe a passes through the pipe sand the valve w to the inlet d of the high pressure stage H, then through the delivery branch e, the pipes l, m, the supply pipe t to the low pressure stage N, from which it is discharged through the valve w, the pipe k, and the valve i. The shutters u close a part of the cross-section of each section of the stage N.
Patent GB-1403127-A (GB)
Title: Mechanism for coupling and braking a rotatable member of a time piece or of a small mechanism
IPC: G04B27/02
Filed: 1973-03-07
Abstract: 1403127 Chronographs EBAUCHES SA 7 March 1973 [15 March 1972] 10998/73 Heading G3T [Also in Division F2] In a clutch for use in a chronograph timepiece or other small mechanism, a driven wheel 3 is normally pressed by a spring 12 against a driving wheel 8, 9 which is retained by a shoulder 13 on a bush 10 fixed to shaft 11, so that the wheels, both of which are loosely mounted on the shaft or bush, rotate together and with the shaft. The driving connection may be broken by operation of a control element 18 which axially displaces a plate 15 and moves the spring and wheels along the shaft. The wheel 3 is thus brought against a fixed part 5a of the framework and braked thereby, while the wheel 8, 9 is free to rotate around the bush 10 and the shaft 11 is also free. The element 18 carries three conical studs 16 which engage the edges of holes 17 in the plate 15 to move the plate against the spring.
Patent GB-665478-A (GB)
Title: Improvements in or relating to ammonium nitrate
Inventor: WHETSTONE JOHN
IPC: C05C1/02
Filed: 1949-04-26
Abstract: A modification of the ammonium nitrate claimed in the parent Specifications consists of ammonium nitrate particles whereof every 100 parts carry on their surfaces 0.001 to 1.0 parts by weight of a soluble salt of a polysulphonated derivative of a triamino substituted triaryl methane dyestuff or a lower N-alkyl mono substituted derivative thereof, the aryl groups of which are phenyl or tolyl groups or any combination of these; being other than Acid Magenta (C.I. No. 692).  These dyestuffs have a solubility of at least 0.5 per cent in saturated aqueous ammonium nitrate at 20 DEG C and condition the ammonium nitrate IV crystals produced from the saturated solution to [010] prisms, laths, plates or scales instead of the usual [110] elongated prisms or needles.  Lower alkyl means alkyl groups having up to 3 carbon atoms.  Suitable polysulphonated derivatives are: the ammonium salt of trisulphonated pararosaniline, rosaniline and p p1 p11 triaminophneyl-di-tolyl-carbinol anhydride; the ammonium or calcium salts of trisulphonated new magenta; the sodium salt of trisulphonated N-mono-methyl triamino tritolyl carbinol anhydride; Red Violet 5R.S. (C.I. 693).  The mixture may be prepared by (1) effecting direct crystallization or granulation of ammonium nitrate from a solution containing at least one of the dyestuffs; (2) wetting granules of ammonium nitrate with at least one of the dyestuffs in aqueous solution or in solution in liquid ammonia or Diver's liquid (75/25 ammonium nitrate/liquid ammonia) and removing water or liquid ammonia by drying or evaporation respectively; (3) dry mixing dyestuff and ammonium nitrate; or (4) mixing ammonium nitrate and dyestuff absorbed on an absorbent such as kieselguhr.
Patent GB-1342110-A (GB)
Title: Automatic battery tester
IPC: H01M10/42
Filed: 1971-04-23
Abstract: 1342110 Automatic current control H K SCHOLL 23 April 1971 11116/71 Heading G3R [Also in Divisions G1 and G4] The discharge current of a battery (22) Fig. 6 (not shown) is maintained constant by a servosystem which includes a motor (57) for adjusting a rheostat (41) in the discharge current path. Signals respectively proportional to the desired and actual currents are compared in a differential amplifier 113, and if their difference is too great one or other of two Zener diodes 117, 118 breaks down to energise a corresponding relay R5 or R6 which in turn supplies power to the motor to drive it in the appropriate direction. The presence of the Zener diodes prevents hunting, and a storage capacitor 119 across the differential amplifier output provides damping.
Patent GB-294270-A (GB)
Title: Disc harrows
IPC: A01B23/04
Filed: 1927-04-26
Abstract: 294,270. Towner, H. T. April 26, 1927. Couplings for tractors.-The frame of a disc harrow is connected to a tractor by a clevis 27 on a bar 19 adjustable about its pivot 21 by means of a link bar 20 of adjustable length. The bars 19, 20 are pivoted on links 22 pivotally mounted on plates 24 at the corners of the frame. The bar 20 consists of two parts connected together by bolts 25 passing through any pair of a series of holes 26.
Patent GB-221475-A (GB)
Filed: 1924-05-06
Abstract: Sound record blanks are made by coating a base of cardboard or the like with a composition formed by mixing together naphthol, alcohol, resorcin, formaldehyde and a catalyst such as sodium sulphite.  A filling material such as barium sulphate may be added, and soot may also be added for colouring.  An example is given in which the quantities of the various ingredients are specified.  The Specification as open to inspection under Sect. 91 (3) (a) describes the record composition broadly as consisting of aromatic hydroxyl compounds mixed with alcohol, aromatic polyoxy compounds mixed with formaldehyde, a heat-producing catalyzer such as sodium sulphite, and filling material.  It also states that the resorcin and formaldehyde &c. may be in approximately equal parts, and may be mixed with an approximately equal quantity of spirit in which naphthol is dissolved, the proportion of sulphite being 1 or 2 per cent, while the filling material may be equal to half or two-thirds of the other substances.  This subject-matter does not appear in the Specification as accepted.
Patent GB-105182-A (GB)
Title: Improvements in and relating to Means for Connecting Pipes, Electrical Conduits, and the like.
Inventor: UREN FREDERICK WILLIAM
IPC: H02G3/06
Filed: 1916-08-09
Abstract: 105,182. Uren, F. W. Aug. 9, 1916. Sleeve couplings.-In a device for coupling to gether the ends of electric conduits, pipes, &c. a sleeve a is provided on its inside with one or more keyways or channels f to receive tapered gripping-plates e, which are guided in the channels and have projections or screws d engaging with slots c in the sleeve. When the ends of the conduits b are forced into the ends of the sleeve, the plates are moved inwardly and act as wedges to hold the parts together. To ensure a positive movement of the gripping plates when the conduits are introduced, the plates are provided with flanges h with which the conduits engage, and to increase the wedging action, the channels in the sleeve may be inclined or tapered. A hole q may be formed diametrically through the sleeve to facilitate wiring operations. An angle or T shaped piece may be used instead of a plain sleeve.
Patent GB-681470-A (GB)
Title: A spraying device for liquids
IPC: B05B11/06
Filed: 1951-05-15
Abstract: 681,470. Spray-producers. MALTNER, H. May 15, 1951 [June 3, 1950], No. 11245/51. Class 69(iii). A casing 2, containing a liquid tank 8 and two pump cylinders 10, slides within a casing 1 containing pump plungers 14, and air from the cylinders passes through a duct 23 to atomise liquid drawn up a tube 22, and the resultant spray is delivered from an outlet 25. The air and liquid outlets are formed in a head 7 and, together with an air inlet duct 18, are sealed in the non-spraying position by a member 34 on a pin 32 attached to a cap 27. In this position the casing 2 is forced downwardly against springs 15, and the cap is moved in bayonet slots 26 against a,spring 29 to engage, by its rim 30, clip-like projections 31 on the casing 1. In a further embodiment, Fig. 4, the head 7 is surrounded by a tubular sleeve 35 which carries a screwed cap 36 secured to a sealing member 34, and the air inlet passage 18 contains a throttle valve 38. In the closed position the passage 18 is closed by a needle 39.
Patent GB-843234-A (GB)
Title: Production of hydrobrominated derivatives of olefinically unsaturated compounds
Inventor: GASSON EDWARD JAMES
IPC: C07C17/08
Filed: 1958-04-09
Abstract: Hydrobrominated derivatives of compounds CH2=CR1R2, where R1 is hydrogen, alkyl o haloalkyl and R2 is alkyl or haloalkyl, are prepared by continuously contacting, within a previously formed volume of the hydrobrominated derivative, the unsaturated reactant with HBr and an organic peroxide catalyst, the molar ratio of the unsaturated reactant to HBr being at least 0,8 : 1.  The products are terminally brominated.  Specified reactants are propylene, butene-1, isobutene, octene-1, 2-ethylhexene-1, octadecene-1, 3-chlorobutene-1, and alkyl bromide.  The Provisional Specification refers to "terminal olefines" generally, but excluding ethylene, and mentions diolefines such as butadiene; there is no restriction on the molar ratio of olefine to HBr.
Patent GB-1359810-A (GB)
Title: Radar system for an aircraft
IPC: G01S7/36
Filed: 1973-03-08
Abstract: 1359810 Radar; aerials S O HEDBERG 8 March 1973 11341/73 Headings H4D and H4A A radar-controlled missile is prevented from reaching the vicinity of an aircraft by, at the aircraft, receiving and amplifying the (unmodulated) radar emission and transmitting the amplified signal towards the ground on the azimuth of the received emission; the missile is thereby deflected into the ground. Aerials.-The transmitting aerial system on the aircraft comprises an array of six feed members, e.g. 11, with associated reflectors, e.g. 12, to cover 360 degrees in azimuth. The receiver in the aircraft determines the bearing of the enemy radar and switches the amplified signal to the appropriate feed member. A plastics enclosure 10 is included and, in order to prevent radiation twoards the missile, a radar-absorbent layer 13 is provided.
Patent GB-315483-A (GB)
Title: Improvements in or relating to screw propellers and screw fans
IPC: B63H1/28
Filed: 1928-04-18
Abstract: 315,483. Wragg, C. A. April 18, 1923. Screw propellers. - A screw propeller having a main blade and an auxiliary blade is arranged so that the auxiliary blade is substantially parallel straightsided, and has its leading edge adjacent to the trailing edge of the main blade and parallel thereto. The blades may be mounted on a common hub or the auxiliary blade may be carried by the main blade, or the blades may be carried on separate bosses. Also more than one auxiliary blade may be fitted. The main blade section A, Fig. 1, has a flat auxiliary blade B disposed at its rear end. Alternative sections and dispositions are shown in the remainder of the Figure. For marine purposes the main blade A and auxiliary blade B7 may be mounted on separate bosses H, G, Fig. 3. For air screws the blades A, B may be mounted on a common boss as shown in Fig. 4, whilst Fig. 11 shows the main blade A10 carrying the auxiliary blade B on stream line braces E, to which they are fixed or pivotally attached.
Patent GB-292941-A (GB)
Title: Improvements in or relating to processes and apparatus for the wet grinding of materials in tube or ball mills
IPC: B02C17/18
Filed: 1928-04-18
Abstract: 292,941. Krupp Grusonwerk Akt.- Ges., F. June 27, 1927, [Convention date]. Roller mills; wet grinding, - In a tube or ball mill in which the disintegrated material enters the discharge chamber 4 through an opening 3 provided in the discharge end wall 2 of the mill and is conveyed from the chamber into a hollow discharge trunnion 6 of the mill, the stream of material flowing from the discharge chamber into the trunnion 6, if it has not been ground to the desired fineness, is returned either wholly or partly to the grinding chamber where the material so returned is separated according to gravity so that the coarser particles sink while the finer particles are floated off through the hollow trunnion by the liquid held up in the grinding chamber. Within the trunnion 6 is a regulating device or cone 7 provided with ribs 8 slidable in guides 6<1>, the cone being adjustable laterally by a screwed spindle 9 seated in a boss 10 of a supporting ring 11 which may rotate with the mill or be fixed to the outlet. In the discharge chamber 4 are ribs or blades 5, Fig. 2, which raise the ground material and' convey it into the hollow trunnion, the amount of material diverted depending on the position of the cone 7. When the cone is in the position shown in dotted lines, Fig. 1, the material is returned, by means of the guide surface 7", through the central opening 2<1> in the discharge end wall to the grinding chamber where the coarser particles sink and are reground whilst the finer particles are floated off with the liquid through the hollow trunnion.
Patent GB-778263-A (GB)
Title: Production of dithiocarbamic acid ester-sulphonic acids or salts thereof
IPC: C07C333/18
Filed: 1955-04-21
Abstract: An N-disubstituted dithiocarbamic acid ester containing a sulphonic acid group in the ester residue, or a salt thereof, is produced by heating a salt of a halogeno-alkane sulphonic acid with a salt of an N-disubstituted dithiocarbamic acid in the presence of water or a hydroxyl-containing organic solvent, e.g. alcohol.  Suitable salts of dithiocarbamic acids are sodium N,N-dimethyl - dithiocarbamate, potassium N,N - diethyl - dithiocarbamate, sodium N,N - diisopropyldithiocarbamate, the dibutylamine salt of N,N-dibutyldithiocarbamic acid, sodium piperidyl - N - dithiocarbonate, sodium morpholyl - N - dithiocarbonate, sodium piperazine - N,N1 - bis - dithiocarbonate.  Salts of halogeno-alkanesulphonic acid specified are bromomethane sulphonic acid, 2-bromo-ethanesulphonic acid - 1, 3 - bromopropanesulphonic acid - 1, 2 - bromo - propanesulphonic acid - 1, 4 - bromobutanesulphonic acid - 1 and 6-bromohexanesulphonic acid-1. Salts of the same base may be used for both reaction components. Such salts may be derived from inorganic bases such as ammonium, sodium, potassium, magnesium, calcium, barium, strontium, lead or silver or organic bases such as dimethylamine and trimethylamine. In examples: (1) the pyridine salt of N,N-pentamethylene-dithiocarbamic acid and potassium 3-bromopropane - 1 - sulphonate are dissolved in water and heated together on a water bath, the reaction mixture is neutralized, filtered after addition of carbon and evaporated to dryness, and the N,N - pentamethylene - dithiocarbamic acid - n - propyl ester - o  - potassium sulphonate is recovered; (2) diethylamine, carbon disulphide and caustic soda are reacted together and the product is heated with sodium bromoethanesulphonate to form N,N-diethyldithiocarbamic acid-ethyl ester-o -sodium sulphonate.
Patent GB-978045-A (GB)
Title: Improvements in or relating to electrical control circuits
Inventor: HICKMAN STANLEY ALFRED
IPC: H02P7/28
Filed: 1960-04-01
Abstract: 978,045. Photo-electric measurement of speed. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 28, 1961 [April 1, 1960], No. 11500/60. Heading G1A. [Also in Divisions G5 and H3] An electrical control circuit comprises means for generating pulses of frequency dependent upon the speed of a member, means deriving a voltage dependent upon the frequency, means for generating a control signal on said voltage reaching a predetermined value, arid means for inhibiting production of further control signals until the circuit has been reset. A magnetic tape 1, accelerated by the take up spool rotates a disc 3 which modulates light from a lamp 5 to a phototransistor 6 producing pulses with a speed-dependent repetition frequency. The pulses are rendered of constant amplitude and width by a monostable transistor multivibrator 7 and an integrating circuit, 8, 9 produces a voltage dependent upon their frequency. When this voltage reaches a predetermined value, a transistor in circuit 10 conducts and energizes a relay 11 to bring a capstan into contact with tape 1 and to send a signal to bias one of the transistors of multivibrator 7 to keep relay 11 energized until condenser 9 is discharged in a reset operation.
Patent GB-347462-A (GB)
Title: Improvements in and relating to apparatus for playing games of skill
IPC: A63F9/02
Filed: 1930-04-11
Abstract: 347,462. Games. HAWORTH, T., 638, Lytham Road, Blackpool. April 11, 1930, No. 11504. [Class 132 (ii).] An apparatus for playing a game of skill comprises a moving or rotating target adapted to receive impressions from a striker, and one or more strikers formed of pivoted members adapted, upon release of a detent mechanism under control of a player, to strike the target and leave a mark or impression thereon. The target 1 consisting of a miniature airship with a downwardly-projecting extension 2 is carried by a shaft 5 rotated by a motor 7. Each player controls a striker 11 consisting of a model aeroplane secured to a rod 12 pivoted on a pin 13 and caused, when released from a catch 16, to swing upwards under the influence of an adjustable weight 15. Before commencing a game, the attendant raises a hand-lever 31 and by means of a loose sleeve 30 and a lever 26 pivoted to the rotating shaft 5, raises a loosely-supported distance piece 25 so as to rotate in a path between the catches 16 and the push rods 20 of the various players. The arcuate length of the distance piece 25 is such that the catches 16 can only be released by actuation of the push rods at such times as will ensure the striker 11 making contact with the extension 2. A sheet of paper detachably secured to the extension bears a central vertical line and the object of the players is to release their strikers 11 so as to strike the target at the nearest point to the central vertical line. The rods 12 are of different lengths so that the extension 2 is struck at different heights. The nose 32 of the striker is provided with a die in the form of a letter or number which may be inked by a pad, automatically removed by a counterweight as the striker swings upward. Instead of employing push rods 20, the catches 16 may be released by electromagnetic means, the distance piece 25 then forming a moving short-circuit device.