baber/WOPTO huggingface dataset:
Patent GB-942050-A (GB)
Title: Transmission system for two signals on a common high frequency carrier
IPC: H04H20/88
Filed: 1960-03-04
Abstract: 942,050. Stereophonic broadcasting systems. LOEWE OPTA A.G. March 4, 1960 [March 11, 1959], No. 7648/60. Heading H4L. Relates to a system for transmitting two signals on a common carrier, particularly for compatible stereophonic transmission. At the transmitter, Fig. 1, the signals from microphones 5, 6, are supplied via respective amplifiers 3, 4 to a circuit 2 which receives squarewave pulses at a supersonic frequency from a generator 1. Alternatively, the output from generator 1 may be sinusoidal. The amplitude of the signal from 1 is fixed at about 50% of the maximum permissible depth of modulation of the main carrier. In the circuit 2 one audio frequency signal is superimposed on a positive direct voltage and the other on a negative direct voltage and the two signals are keyed alternately by the switching signal from 1. The output from 2 consists of a train of pulses in which the positive pulses are amplitude modulated with one signal and alternate with the negative pulses which are amplitude modulated with the other signal. The output from 2 is applied via a frequency modulator 8 to modulate a radio frequency carrier which is generated at 7 and the resulting signal is transmitted via amplifier 9. The received signal is supplied via a normal mixer 12, I.F. circuit 13, and frequency discriminator 14, Fig. 2, to a second demodulator 15 having oppositely poled diodes for selecting the two audio frequency signals, switches 16, 17, being provided for switching over from stereophonic to monaural reception.
Patent GB-491813-A (GB)
Title: A mechanical packing machine
IPC: B65B5/06
Filed: 1937-03-17
Abstract: 491,813. Packing tablets &c. HUDSON, T. March 17, 1937, No. 7770. [Class 94 (i)] In a machine for packing small articles such as tablets or sweets into boxes, the boxes are fed upside down over an opening and are filled from below, after which they are moved on to a tipping plate to be turned right side up. The articles are fed singly by a reciprocating finger 9 on to brushes 9c where they are stacked, and batches are carried by a reciprocating carriage 6 by means of a finger 6a along the platform 9a on to a plunger 32a. The carriage is guided by a runway 5 which oscillates vertically about a hinge 5a to allow the finger 6a to clear the stack on the return stroke. The empty boxes are fed upside down by a conveyer 8 against a stop 17 and are moved laterally by a pusher 24 over an oblong aperture above the plunger 32a, which then moves vertically to insert the batch of articles. As the pusher 24 moves forward, a pressure plate 22 which slides on a spindle 25 is brought down on the box by means of a roller 18c carried' by the arm 18a of the carriage 6 and is locked in the filling position by a latch 23. On further movement of the pusher 24, the pressure plate 22 moves clear of the latch 23, whereupon it is lifted by a spring and returns with the pusher. The filled boxes move in turn on to a tipping plate 30a which is rotated to turn them right side up, and they are fed to a delivery conveyer by an ejector 30c.
Patent GB-626759-A (GB)
Title: Improvements in apparatus for taking cinematographic pictures on continuously fed film
IPC: G03B41/08
Filed: 1947-03-21
Abstract: 626,759. Kinematograph cameras. SOC. POUR L'EXPLOITATION DES BREVETS M.G.D. March 21, 1947, No. 7797. Convention date, May 16, 1946. [Class 97 (i)] In a high-speed continuous-feed kinematograph camera an objective 1 forms an image in a plane through the centre of a drum 2 in the rim of which a ring of lenses 3 is carried for optical compensation, the drum also carrying a series of inwardly-projecting teeth 6 which engage the film perforations to feed the film in the region where the film is exposed. For this purpose the film passes between the spools 4 and 5, through a curved track in the gate member 7.
Patent GB-493596-A (GB)
Title: Polyhydric alcohol-polycarboxylic acid condensation products
IPC: C08G63/127
Filed: 1938-03-14
Abstract: Condensation products are prepared by heating 1.1.1-trimethylolpropane with phthalic acid, hydrogenated phthalic acids, substituted phthalic acids, e.g. chlorinated phthalic acids, or their functional derivatives, e.g. anhydrides chlorides esters or amides, and discontinuing condensation while the products are still soluble in aqueous alkali.  Minor proportions of other polycarboxylic acids, of monobasic acids, or of other polyhydric alcohols, e.g. glycerine, 1.3-butyleneglycol, sorbitol, mannitol, pentaerythritol, may be present.  The products are soluble also in spirit; and may be used in lacquers and as textile assistants.  In examples, 1.1.1-trimethylolpropane, with or without 1.3-butyleneglycol, is condensed with phthalic anhydride, with or without maleic anhydride.
Patent GB-871693-A (GB)
Title: Cleaning device for hair combs
IPC: A45D24/40
Filed: 1958-03-12
Abstract: 871,693. Brushes. EARNSHAW, J. P. March 11, 1959 [March 12, 1958], No. 7889/58. Class 19. A device for cleaning hair combs comprises a handle 1 provided with a flexible, dirt-loosening, open looped portion 2 composed of threads or strands of textile materials, bristle or wire at one end and a brush portion 4 at the opposite end composed of similar materials. The end of the handle carrying the looped portion 2 also carries a further brush portion 3 that is of shorter length than the looped portion.
Patent GB-657105-A (GB)
Title: Improvements in and relating to commutating dynamo electric machines
Inventor: HILL EDWARD PERCY
IPC: H02K23/24
Filed: 1948-03-16
Abstract: 657,105. Commutating windings. METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. March 16, 1948, No. 7908. [Class 35] The commutation of a generator or a motor required to operate with variable main field flux is improved by providing an additional interpole winding connected in circuit with the main field winding or a control element receiving adjustment in dependence on that of the main field current whereby the resultant interpole strength is reduced when the main field flux is reduced. In Fig. 1 the main interpole winding 5 is-differentially acted upon by an additional interpole winding 9, the ampere-turns of which depend upon the position of a variable tapping point on a potentiometer 11. This tapping point, which is ganged with that of a rheostat 8 in series with the main field winding 2, reduces or increases the tapped potentiometer P.D. when the rheostat 8 is increased or reduced. Thus the ampere-turns of the winding 9 are varied in the opposite sense to those of the main field winding 2, whereby the resultant interpole strength will be reduced as the main field flux is reduced. The armature 1, main interpole winding 5, compensating winding 6 and cumulative series winding 7 are all in series across the supply lines 3, 4. In a modification, the ampere-turns of the interpole windings 5, 9 are additive, but the winding 9 is in series with the main field winding 2 and the rheostat 8. Fig. 3 shows the additional interpole winding 9 in opposition to the winding 5 and in series with a preset resistance 13 and this circuit is connected across line 3 and the junction of the field winding 2 and the rheostat 8. In Fig. 4 one end of the winding 9 is connected to one end of the winding 5 so that a proportion of the armature current is diverted to energize the winding 9 whereas in Fig. 5 the current is diverted from the series winding 7. In both these cases, although the current flowing in the winding 9 is dependent upon the armature current, it is controlled by a rheostat 14 to vary the resultant interpole strength in the same sense as the current in the field winding 2. The arrangements shown in Figs. 4, 5 may be modified by shunting the winding 9 by an element having non-linear currentvoltage characteristic ; alternatively, this element may be inserted in a circuit formed of the winding 9 in parallel with another additional cumulative interpole winding.
Patent GB-703136-A (GB)
Title: Manufacture of 7-bromocholesteryl esters
IPC: C07J9/00
Filed: 1952-03-27
Abstract: 7-Bromocholesteryl esters are prepared by the reaction of gaseous bromine on cholesteryl ester in an inert solvent in the presence of light of a wavelength in the range of 300 to 600 mu. The bromine may be introduced into the solution mixed with an inert gas, e.g. nitrogen, a suitable mixture being in the ration of 10 per cent. bromine and 90 per cent. nitrogen by volume. Carbon disulphide is the preferred inert solvent.  The irradiation may be effected by means of lamps which dip into the cholesteryl ester solution.  The speed of bromination may be controlled by regulating the gas supply.  In the example 7-bromocholesteryl benzoate is prepared.  Specification 671,425 is referred to.
Patent GB-927758-A (GB)
Title: Improvements relating to the doors of road vehicles
Inventor: JONES DAVID BRYNMOR
IPC: E05F1/12
Filed: 1960-03-08
Abstract: 927,758. Hinges. VAUXHALL MOTORS Ltd. March 7, 1961. [March 8, 1960], No. 8142/60. Class 65 (2). [Also in Group XXXII] Relates to hinges connecting the ends of the upper horizontal edge of a door to a vehicle body (see Group XXXII). Referring to Figs. 10 and 11, the hinge at each end of the upper edge of the door 4 comprises an arm 7 connected at one end 7A to the door 4 and having its other end a pair of spaced lugs 9 pivoted at 8 to a lug 12 on a channel member 11 fixed to the vehicle cantrail. The arm 7 is also pivotally connected at 22 to a channel member link 19 having slots 23 to engage a cranked end portion 18 of a torsion rod 14 supported in bearing blocks 16 and whose other end is bent upwardly at 25 Fig. 12 and supported by a bearing (not shown) and which end 25 bears against the base of the channel 11. The other hinge member 7 co-operates with a similar torsion rod 15 and the two rods 14, 15 are twisted round each other between the cranks 18. The relationship of the torsion rods 14, 15, the cranks 18 and the links 19 is such that as the torque moment of the rods increases with the closing of the door, the radial distance from the hingecentre to the point of application of such moment decreases at a rate which will substantially balance the change in moment of the door 4 about its hinge axis 8. Specification 927,759 is referred to.
Patent GB-609852-A (GB)
Title: Improvements in angling and fishing devices, and the like
IPC: A01K93/00
Filed: 1946-03-15
Abstract: 609,852. Fishing. FRANCE, E. March 15, 1946, No. 8200. [Class 48] A line float comprises a buoyant body P having a hydrovane Q, with means for attachment of the line and fishing tackle. In the construction shown, the line from the angler passes through loops M and N in a wire yoke R before attachment to the tackle. The yoke is held in place by a bolt S with a slotted shank, and may be moved longitudinally for trimming purposes. Modified constructions are described.
Patent GB-236165-A (GB)
Title: Improvements in and connected with tabular calculating apparatus for use with weighing apparatus
IPC: G01G23/22
Filed: 1925-03-27
Abstract: 236,165. Joksch, F. Juae 24, 1924, [Convention date]. Computing-apparatus for use with weighing apparatus comprises a carrier, such as a drum or polygonal rod, on which are mounted a number of removable and interchangeable strips any one of which is adapted to be set manually to display the values of a series of articles weighed at a given price per unit the carrier being disposed in juxtaposition to or coaxial with the weight indicating scale of the weighing apparatus. As shown in Fig. 1 applied to a machine with a lever balance mechanism, a drum 1 is rotatably mounted on a shaft 2 and carries a number of interchangeable strips 4 arranged longitudinally and inscribed with a series of computations, as shown in Fig. 3, derived from the price unit of the various weights given on the weighing scale 20, 21. The lever arm 7 carries a cylindrical segment 16 having an inclined indicator line 23 for co-operation with an indicator line 19 on the scale strip 18. In a modification the drum may be arranged concentrically with the lever arm 7, the segment being formed of transparent material or replaced by a wire 23 arranged in known manner. For weights exceeding the " 99 " mark additional indicator lines 23 and separate indicators 29 are provided. The points of intersection of these lines with the fiducial line 19 determines the values which must be added to give the total cost.
Patent GB-656573-A (GB)
Title: Improvements in or relating to means for governing the load on prime movers and apparatus driven thereby
IPC: B02C25/00
Filed: 1948-03-20
Abstract: 656,573. Motor driving arrangements. ANDREWS, D. March 20, 1948, No. 8355. [Class 35] [Also in Groups II and XXIV] In a system in which the rocking movement of an electric motor under the effect of torque reaction and in opposition to balance means is utilized to control the feed to a grinding mill or other apparatus driven by the motor (see Group II), the casing of the motor 1 is formed or provided with hollow trunnions 4 mounted in anti-friction roller and ball bearings 6 and 7, respectively, a projection 9 co-operating with adjustable stops 10 to limit the rocking movement, a laterally-projecting arm 16 carrying a balance-weight 13 adjustable by a screw-and-nut 15, 14, and an apertured lug 34 for connection by a cable 33 to the means controlling the feed device. A further apertured lug 21 may be provided on the casing for connection to an additional balance-weight 18. The rocking movement of the motor causes slipping or disengagement of a clutch 27 in the drive 22-26 to the feeding device, which clutch is normally held engaged against.the action of a spring by the balance-weight acting through the cable 33 and linkage 30-32.
Patent GB-1491528-A (GB)
Title: Device for varying the gas discharge area of an exhaust nozzle at the outlet of a jet deflecting device
IPC: F02K1/00
Filed: 1975-02-28
Abstract: 1491528 Variable area jet propulsion nozzles MOTOREN-UND TURBINEN-UNION MUNCHEN GmbH 28 Feb 1975 [2 March 1974] 8425/75 Heading F1J [Also in Division B7]  The invention relates to a jet propulsion nozzle of the kind comprising two or more rotatable pipe sections at the outlet end of the jet pipe whereby the direction of the discharging gaseous jet may be varied, there being means for varying the outlet area of the nozzle. The assembly shown comprises a fixed jet pipe 1, a first rotatable pipe section 2 mounted on the jet pipe by a bearing 6, and a second rotatable pipe section 3 mounted on the first rotatable pipe section 2 by a bearing 7. The first pipe section 2 is rotatable by means of a motor 17 which drives a pinion 20 which engages a ring gear 21 mounted on the pipe section. The second pipe section 3 is rotatable by means of a motor 18 which drives a pinion 33 which engages a ring gear 31 which is part of a double ring gear 22 rotatably mounted on the first ring gear 21; the second ring gear 32 engages with a pinion 34 which drives through a flexible shaft 23 a further pinion 28 which engages a ring gear 29 mounted on the second pipe section 3. Thus the gas jet may be discharged in any desired direction. A series of flap members 58 are pivotably mounted at the downstream end of the second pipe section 3 to permit the discharge area of the nozzle to be varied, the flaps having cam members 57 which are engageable by rollers 56 carried by an axially movable member 55. The nozzle area is varied by means of two motors 35, 36 mounted on the fixed jet pipe 1, the motor 35 engaging an arm 37 which is mounted for axial movement on a roller 39 supported on the fixed jet pipe 1 and carrying at its downstream end a roller 40 which engages in an annular groove 42 mounted on a second arm 43 which itself is mounted on a roller 46 carried by the first pipe section 2 so that it rotates with the pipe section. The second arm 43 has at its downstream end an annular groove 45 in which engages a roller 48 carried by a rod 51  which carries the member 55, the rod 51 being movable with respect to the second pipe section 3 by means of a roller 54 and guide 53. The second motor 36 is similarly connected to the member 55 by means of an arm 38 mounted for axial movement on a roller 40, the arm carrying at its downstream end a roller 41 which engages in the annular groove 42 which is connected to a second arm 44 mounted on the first pipe section 2 by means of a roller 47 which allows axial movement of the arm with respect to the pipe section but ensures rotational movement therewith. The second arm 44 is connected at its downstream end to the annular groove 45 in which is disposed a roller 49 carried by a rod 52 which is connected at its downstream end to the member 55 carrying rollers 56. Thus the nozzle area may be varied when the nozzle is directed in any direction.
Patent GB-166568-A (GB)
Title: Improvements in mounting and sighting apparatus for aircraft and anti-aircraft guns
IPC: B64D7/02
Filed: 1917-06-13
Abstract: 166,568. Hamilton, B. T. June 13, 1917. Sights.-Relates to the mounting of, and sighting-gear for, aircraft and anti-aircraft guns, in which the sight is mounted adjacent to the gun and is linked to it and to the gun mounting so as to remain parallel to the gun during laying, and consists (1) in mounting the gun in gimbals on a fixed base, and (2) in means for adjusting the point of connection of the sight-bar with the fixed base to set the sight-line for tangent elevation and speed of gun platform. In the form shown, as applied to the mounting and sighting of a gun of the " Davis " type on an aeroplane, the gun A is mounted in a gimbal mount B on the floor framework D of the aeroplane, and is pivotally connected by a link F to an operating lever E universally jointed at E<1> to the frame D. A sight-bar G carrying a telescope H is pivoted at G<1> to the link F, and universally jointed at K to a member on the frame D so that the sight-bar in its zero position rests parallel to the axis of the gun. The joint K is capable of displacement in a guide L parallel to the sightbar G in its zero position to impart tangent elevation to the sights, and the guide L is mounted in a carriage M displaceable in a fixed guide N perpendicularly to the sight-bar in a fore- and-aft direction to adjust the sights for speed of gun platform. Adjusting-gear is provided capable of locking the joint K automatically in any position.
Patent GB-540752-A (GB)
Title: Improvements relating to fasteners for the bonnets of motor road vehicles and the like
IPC: E05B65/19
Filed: 1940-05-11
Abstract: 540,752. Hook fastenings. MUSGROVE & GREEN, Ltd., and DUNN, O. H. May 11, 1940,; No. 8514. [Class 44] A fastening particularly for motor-car bonnets comprises a hooked lever pivoted within the bonnet with one arm extending out therethrough so that release can be effected by raising the arm, the hook being loaded by a spring which passes over the dead-centre to hold the hook in each of its extreme positions, and the arrangement being such that the hook engages automatically on closing the bonnet with the hook in either of its extreme positions. As shown an operating arm 9 with curled outer handle 9a and curved inner end has lateral webs 9b which are extended within the cover 7 to form a pair of parallel off-set hooks 9c (one visible). The hooks are pivoted by pins 10 to lugs 8a forming extensions of the side webs of an apertured channel-section bracket 8 secured to the inner surface of cover 7. The device is loaded by a spring 11 disposed between the hooks and passing the pivots 10 in moving between extreme positions. The hooks co-operate with an aperture 12c in a plate 12 adjustably mounted by bolt and slot connection at 14 on the frame 13, the upper end 12a of the plate being off-set towards core 7. If the cover be closed with the device in the released position, Fig: 4, the inner curved end of arm 9 abuts against the part 12a and throws the device over clockwise into engaging position, and if closed in the engaging position, Fig. 5, the inclined surfaces 9d of the hooks snap into engagement. A modification is described with the spring extending upwards from the hooks.
Patent GB-1453314-A (GB)
Title: Dispensing
IPC: B65D47/00
Filed: 1973-10-19
Abstract: 1453314 Dispensing CORNELIUS CO 19 Oct 1973 [25 Oct 1972] 8522/75 Divided out of 1453313 Heading A4T [Also in Division B8] The subject matter disclosed in theSpecification of this Application is also disclosed in that of Specification 1453313 but the claims relate to a method of dispensing and a dispenser for use in the method.
Patent GB-215163-A (GB)
Title: Key mechanism for typewriting machines
IPC: B41J5/14
Filed: 1923-03-26
Abstract: 215,163. Reischl, L. March 26, 1923. Type-lever actions.-Supports for the key-levers and intermediate levers consist of U-shaped sheet metal combs provided with plates carrying pivotrods. A wide comb 6, Fig. 1, having comb-slots 10, 11 in the front and rear webs, is provided with plates 5 carrying pivot-rods 2, 3, 4 for the character-key levers 1, and a pivot-rod 7 for the auxiliary key - levers. The plates are riveted to the top web 6 of the comb, and flanges 14 are provided for securing the comb to the framework 15. For actions comprising intermediate levers, the key-levers 1, Fig. 3, and intermediate levers 22 are supported by combs 30, 28 which are connected, to form a frame, by cross-bars 27. The comb 30 supports plates 41 carrying a pivot-rod 39 and a retaining rod 42 for the key-levers, and the comb 28 supports plates 36 carrying a pivotrod 35. Returning-springs 12 for the key-levers are connected to a bar 29, secured to the bars 27.
Patent GB-454075-A (GB)
Title: Process of and apparatus for resolving solutions or liquid mixtures into their constituents by cooling and crystallisation
IPC: B01D9/02
Filed: 1936-03-23
Abstract: 454,075. Solidifying liquids by cooling. GES. FUR LINDE'S EISMASCHINEN AKT.- GES., H÷llriegelskreuth, near M³nich, and KRAUSE, G. A., 16, Widenmayerstrasse, Munich, Germany. March 23, 1936, No. 8696. Convention date, March 26, 1935. Addition to 429,474. [Class 29] In the process according to the parent Specification in which a solution to be resolved by freezing one or more of its constituents is cooled in a mould until it is sufficiently frozen to be removed to a separator, such as a centrifuge, the optimum quantity of ice to be separated to give a resulting moulded body of ice and concentrate of sufficient mechanical strength to withstand centrifuging is determined from the relation Y=<n>#x,c where x and y are the percentage concentrations of the original solution and concentrate respectively, and n and c constants varying between 2 to 3À5 and 9 to 26 respectively. Solutions of low concentration are enriched by the addition of concentrate or dry substance prior to freezing out the water. The lower limit for the quantity of ice separated is determined by the stability of the ice skeleton and the upper limit by the pore dimensions in the skeleton which should not retard heat transference. Coffee extract, fruit juices and milk are referred to.