baber/WOPTO huggingface dataset:
Patent GB-1517675-A (GB)
Title: Communication system
IPC: H04J4/00
Filed: 1977-02-22
Abstract: 1517675 Multiplexing NIPPON ELECTRIC CO Ltd 22 Feb 1977 [24 Feb 1976 12 May 1976] 07470/77 Heading H4M In a SSB-FDM communication system, conversion between a plurality of baseband channel signals and an SSB-FDM signal is effected digitally, the arrangement being such that the use of complex signals is avoided as far as possible with a reduction in the frequency of the necessary multiplication carried out per unit time. Real samples are derived with a first sampling frequency f s  from baseband signals, respectively, of a plurality of N baseband channels which include a predetermined number, less than N, of dummy channels, each of the basebands signals having a bandwith equal at most to f s /2. The samples are subjected to offset discrete Fourier transform to convert them into complex sample sequences, N in number. These sequences are digitally band-pass filtered into a real SSB-FDM sequence of samples corresponding to the real samples and sampled at a second sampling frequency of Nf s . A demodulator recovers the input samples from the received SSB-FDM samples by a process inverse to that described above. The Specification contains a mathematical discussion of the operation of the arrangement and gives an expression defining the offset discrete Fourier transform. Suitable arrangements of digital filters and Fourier transform processors for implementing the system are described with reference to schematic Figs. 1 to 18 (not shown).
Patent GB-732357-A (GB)
Title: Improvements relating to snap-action electric switches
IPC: H01H5/18
Filed: 1952-03-24
Abstract: 732,357. Snap-action switches. YOUNG, S. G. June 24, 1953 [March 24, 1952], No. 7579/52. Class 38 (5). A switch, having a snapper similar to that of Specification 594,114, has the handle portion of its operating member projecting away from the switch in a direction substantially parallel to the snapper. In Fig. 2, the operating member is a dolly comprising a part 7 arranged between tongues 10, 11 of the snapper, and connected to the handle portion 13 at 14, 15. The dolly may be pivoted on a spindle or on bearing surfaces on the casing. In another form, Fig. 3, a pivoted operating member 21 is engaged by projections 19 on two push-buttons 18 which may be interconnected so as to prevent simultaneous depression. A single push-pull button may be used. Specifications 654,693, 654,715 and 654,716 also are referred to.
Patent GB-344231-A (GB)
Title: Improvements in wall brackets
IPC: A47G29/02
Filed: 1930-03-08
Abstract: 344,231. Brackets; desks. SIEMENS BROS. & CO., Ltd., Caxton House, Tothill Street, and GOODWIN, W. E., 72, Glyndon Road, Plumstead, both in London. March 8, 1930, No. 7640. [Classes 52 (iii) and 52 (v).] A wall bracket, for supporting a telephone &c., is provided with a pull-out writing &c. desk. In the construction shown the wall bracket consists of two side members 6 with hooks 5 to engage slots 3, 4 in a back plate 1 and a platform having projections 7 to enter the slots 3, thereby securing the side members in position. The platform may be shaped to suit the base of a telephone instrument. The desk consists of a platform 11 with side members 13 having projecting blocks 12 slidable in grooves 10 in the bracket side-members 6, the grooves being enlarged at their front ends 16 so that the desk can be inclined downwards, when pulled out, the desk being supported in an inclined position by the abutment of blocks 14 and 15 on the side-members of the desk and bracket respectively. The bracket may be made of mouldable material, e.g. a condensation product of phenol-aldehyde or thio-urea, the hooks 5 being formed on metal insets.
Patent GB-245641-A (GB)
Title: Improvements relating to motor vehicle bodies
IPC: B62D29/02
Filed: 1925-03-21
Abstract: 245,641. Morris Commercial Cars, Ltd., and Davidson, W. W. March 21, 1925. Bodies. - In motor vans, motor lorries, motor omnibuses, and other motor vehicles of the kind in which the body is composed of a number of separate parts which can be packed for transit and can be readily assembled to form a complete body, the rigid roof is provided with depending flanges which overlap and are adapted to be secured to the side standards of a dash section. The roof 27 is provided with side and rear flanges 30, 28 adapted to be secured to the side and rear panels 24, 26 of the drivers' cab, the flanges being preferably rebated. The front portion of the roof is supported by a transverse board 33 secured to the roof 27 and to the recessed front faces 31 of the uprights 3 of the dash section. Extensions 36 secured to the roof flanges 30 connect the side sections 24 to the uprights 3. A strut 35 extends between the front flange 34 of the roof and the transverse board 33. A foot plate 45 and a seat 40 is provided. In motor vans and motor omnibuses the roof extends to the rear of the vehicle. Specification 245,640 is referred to.
Patent GB-1249178-A (GB)
Title: Improvements in containers for heating liquids
Inventor: RODEHAU ROLF
IPC: F24H1/18
Filed: 1969-02-12
Abstract: 1,249,178. Electrically-heated vessels. R. RODEHAU, [trading as METALLWABENFABRIK ROLF RODEHAU]. 12 Feb., 1969 [17 Sept., 1968], No. 7684/69. Heading H5H. A double-walled container for heating drinks such as coffee or tea has a tubular electrical heating element (not shown) cast in a metal block 5, 13, pressed against the base outer surface of the inner container 4, 12, so that a large part of the surface area of the block is in close direct thermal contact with the container 4, 12. Block 5 is secured to container 4 by nuts 8 and studs, and electric power is supplied to the heating element via a plug 9 fixed to the outer container 2. Block 13, alternatively, is urged against the surface of container 12 by a leaf spring 7 which bears against the inner surface of the web of a channel member 6 welded along the outer edges of its flanges to container 12. The inner container may be provided in its wal with a recess whose dimensions correspond with those of the block and which serves to receive the block. .
Patent GB-1082972-A (GB)
Title: Improvements relating to the manufacture of fluorosilicates
Inventor: JONES LEONARD WILLIAM
IPC: C01B33/10
Filed: 1964-02-25
Abstract: Fluorosilicates are produced by reacting fluorine-containing vapour with a solution of a compound containing metal cations and capable of producing said fluorosilicates, the reaction being irreversible.  The vapour may contain fluorosilicic acid, e.g. resulting from the production of phosphoric acid from phosphate rock, and may be reacted with an aqueous salt solution in the form of continuous jets or streams in a contactor and the fluorosilicates may be recovered from the aqueous solution, e.g. by filtration if insoluble.  Suitable metal salts include carbonates, hydroxides or preferably chlorides of sodium, potassium, barium, copper and caesium.
Patent GB-819940-A (GB)
Title: Improvements in or relating to electric limit switches
Inventor: TILL HEINZ
IPC: H01H3/16
Filed: 1957-03-08
Abstract: 819,940. Retractive switches. ELEKTROSCHALTGERATE DRESDEN VEB. March 8, 1957, No. 7751/57. Class 38 (5). In a limit switch the contacts 2-5, the actuating push rod 13 and the terminals 6-9 lie approximately in a plane which is perpendicular to the plane in which the switch is secured, the direction of movement of the push rod being parallel to this latter plane. The switch is secured by bolts passing through the fixing holes 31, 32 and, as shown in Fig. 2, the switch base is contoured so that adjacent switches interengage. The moving contacts 14, 15 are urged apart by a spring 16 and abut C-springs 19, 20 engaging in slots 21-28 in the sleeve 12 attached to the push rod so that the position of a contact relative to the push rod can be varied by removing the appropriate C-spring and replacing it in another slot. Various arrangements of a number of switches on a bar are described, Figs. 9-13 (not shown).
Patent GB-1044595-A (GB)
Title: Improvements in turbine liquid flow meters
IPC: G01F1/12
Filed: 1965-02-23
Abstract: 1,044,595. Rotary liquid flow meters. SOC. ANON. POUR TOUS APPAREILLAGES MECANIQUES, and SOGREAH SOCIETE GRENOBLOISE D'ETUDES ET D'APPLICATIONS HYDRAULIQUES. Feb. 23, 1965 [May 28, 1964], No. 7780/65. Heading F1F. A turbine liquid flow meter comprising a bladed rotor 1, Fig. 1 (not shown), rotated by the liquid flow in the conduit 2 in which it is mounted, includes upstream of the rotor, a flexible flow deflector or deflectors 3 whose angle of incidence with respect to the conduit axis is variable in dependence upon the liquid flow rate and progressively diminishes with increasing flow rate to extend the range of accuracy of the meter to include relatively low rates of flow. For meters having relatively longbladed rotors, meter readings at low rates of flow are above the upper permissible limit of error. To offset this the deflectors are given an initial deflection in a direction opposite to the directional rotation of the rotor. For meters having relatively short-bladed rotors, the meter readings are below the lower permissible limit of error. The deflectors in this case are given an initial deflection in the same direction as the directional rotation of the rotor.
Patent GB-166633-A (GB)
Title: Improvements in the manufacture of concrete blocks, briquettes and the like
IPC: B30B15/00
Filed: 1920-03-16
Abstract: 166,633. Smith, W. H. March 16, 1920. Stationary-mould machines; moulds.-Relates to a machine for moulding blocks, briquettes, slabs, and the like of concrete or like material of the kind wherein there is relative movement between the walls of the mould and each of the two end plates in order to compress the material positively from both ends. The invention is described as applied to machines for moulding hollow triangular blocks as described in Specification 140,312, [Class 87 (i), Bricks &c.]. In the arrangement shown in Fig. 1, the platen G of an hydraulic press is connected by rods F with the lower pressure plate E of a fixed mould A and operates the upper pressure plate D through pins G, levers L and links M. Springs M<2> serve to snap the levers L over dead centre and to turn the rods M about abutments Q so that the upper pressure plate is released and is raised by a counterweighted lever P'. The parts are returned to operative position, when the platen G is lowered after ejecting the block, by the engagement of the pins G' with projections L<2> on the levers L. The mould may be rectangular and provided with division plates to form two or more triangular blocks and may be provided with forming plates to give a hewn finish or other surface effect to the blocks. In the arrangement shown in Fig. 3 for making single triangular blocks, the bottom pressure plate C is carried on the platen G and the mould supported by spring-plungers b, so that, as the platen rises, the material is first compressed against the fixed pallet D and then compressed by the bottom plate C, which, when the mould is arrested by the top abutment, is moved relatively to the mould to an extent determined by the plungers b. The mould is of triangular cross-section and the longest side A<1>, Fig. 5, is hinged and locked by toggle-clips h. Orifices may be left in this side for the insertion of cores for forming ventilating openings. The top abutment is carried by pivoted counter-weighted pillars and the stripper plate E is supported on a frame R carried by links, whereby, when it is lowered it is swung outwards to a position suitable for transfer to a conveying plant. Concentric rams of known type may be provided to effect a slow movement for compression and a quick movement for stripping. In the Provisional Specification it is stated that mechanical means such as a crank-shaft with connecting-rods may be used to operate the pressure plates.
Patent GB-794934-A (GB)
Title: Improvements in and relating to writing instruments
IPC: B43K24/08
Filed: 1956-03-13
Abstract: 794,934. Pens. SCRIPTO, Inc. March 13, 1956 [March 16, 1955], No. 7893/56. Class 146(3) A writing instrument, e.g. a ball point pen, of the type having a writing element 16 housed within a barrel 10 for sliding movement between retracted and projected positions with means for releasably latching the writing element at projected positions, is provided with a pocket clip 46, mounted on the barrel 10, and a release lever 50 pivotally housed within the clip 46 exteriorly of the barrel' for releasing the latching means. The writing element is projected into writing position by a plunger 34 which includes a latching lever 36 adapted to engage a latching lip 56 formed on the clip 46 so that the element 16 is retained in writing position against the action of a spring 22. The barrel portion 14 is slotted to receive an abutment lug portion 60 of the lever 50, an operating knob portion 58 of the lever 50 extending through a slot in the clip 46. The lower end of the lever 50 is fulcrumed against the outer face of the barrel portion 14 so that on pressing the knob 58 the latching lever 36 is released from engagement with the latching lip 56. Specification 735,840 is referred to.
Patent GB-261246-A (GB)
Title: Improvements in or relating to rock packs, pillars or like supports for use in mine and like underground workings
IPC: E21D15/48
Filed: 1926-03-23
Abstract: 261,246. Sloan, J. May 23, 1926. Shoring.-Shores or packs for mine and like underground workings consist of wire or like structures or cases surrounding waste rock or other material which takes the pressure of the wall or roof of the working. Posts 1 - - 4 are arranged in position and one or more widths of wire netting, comprising longitudinal wires 5, transverse wires 6, and thinner wires 7, are secured by wires 12 to the inner faces of the posts. The overlapping edges 9 of the netting are connected by the ends of cross-ties 10, and cross-ties 11 are provided between the upper edges of the structure. The selvages of the netting sheets have two or more wires 8 provided for strengthening purposes. An additional support for the rock may be provided, consisiing, as shown in Fig 3, of wire netting 13 extending along the floor, against one side 14 of the main structure, and beneath the hanging wall or roof. The! wire netting 13 is secured to additional posts 16, 17, and may extend down another side of the main structure and overlap the portion on the floor. Alternatively the wire structure may be formed of wire arranged spirally or in rings on the outside or inside of the posts. Spacing wires and diagonal wires may be twisted in such a structure. Expanded metal may be used in place of wire netting. The waste rock or other filling is placed in position after the corresponding width of netting has been erected, and when the wire structure is full, and the rock &c. takes the pressure of the wall or roof being supported, the posts and netting may be removed. The posts 1 - - 4 may be dispensed with.
Patent GB-116337-A (GB)
Title: Improvements in Apparatus for the Production of Compressed Air in Intermittent Blasts for Medical Treatment of the Organs of Respiration.
Inventor: DUFFEK ARTUR
IPC: A61M16/00
Filed: 1917-06-05
Abstract: 116,337. Duffek, A. June 5, 1917. Inhalers; pneumatic appliances. - Apparatus for medical treatment of the lungs &c. by intermittent blasts of compressed air comprises a far producing a continuous current of air, a filter or inhalation vessel n connected by a tube to the mouthpiece &c., and a valve m or other device for periodically interrupting the compressed air supply. In the form shown in Figs. 1 and 2, the fan, driven by a motor b, is fitted with blades e mounted in an extension g of the casing c so as to draw in air through openings f, and with blades h forcing the air through the conduit i. An interrupter m formed like a plug-cock is mounted in an interchangeable inset k in the conduit i and is driven by variable gearing from the fan shaft. Vapours produced by an electric heater n<1> may be passed to the receptacle n. The fitting r for the inhalation tube is interchangeable so that the bore of the outlet may be varied. The interrupter m may be replaced by a perforated or notched disk rotated over the outlet from the fan, by a throttle resembling an iris-diaphragm, by a siren-like device, Fig. 6, or by a reciprocating piston, Fig. 7.
Patent GB-1462075-A (GB)
Title: Fluid flow control valves
IPC: F16K31/122
Filed: 1974-02-22
Abstract: 1462075 Valves CROFTSHAW (ENGS) Ltd 21 May 1975 [22 Feb 1974] 8061/74 Heading F2V In a low-pressure gas flow control valve having a large diameter seat 2 the closure member 6 has a recess 16 receiving a mushroom head 13 fixed to the end of a piston-rod of an actuating cylinder 10. The closure member, which has a conical portion 7 with a depending rim 8, contacts the head 13 with a flat surface 17 and can thereby pivot relative the piston-rod to squarely contact the seat. The head 13 and piston-rod are screwed together and held by a transverse pin (19) and a locknut (20).
Patent GB-374882-A (GB)
Title: Improvements in or relating to synchronous alternating-current motors
IPC: H02K19/10
Filed: 1931-03-16
Abstract: 374,882. Motors. KRœSSMANN, H., Sterkrade, Rhineland, Germany. March 16, 1931, No. 8074. Convention date, March 17, 1930. [Class 35.] Rotary machines ; machines with two or more armatures ; motors with unwound iron armatures.-The stator of a synchronous alternating current motor consists of a rim of poles 12 formed of U-shaped laminations with their bases parallel to the motor shaft and between the radial arms of which is mounted a coil 13 coaxial with the rotor shaft and supplied with alternating current, and the rotor consists of an equal number of similar laminated poles 10, Fig. 2, or bars 10, Fig. 5, the distance between adjacent rotor and stator poles at the air gap being slightly greater than the width of the rotor poles. Where the stator and rotor are formed of U-shaped poles, both members carry coils which are connected to the same supply. Each pole may comprise a number of laminations, but for a slow-speed motor each pole may consist of a single thin lamination. Fig. 2 shows an arrangement employing three coupled machines. Adjacent stator or rotor poles are relatively displaced by 120 electrical degrees so that the aggregate functions as a three-phase motor. The bars 10 of Fig. 5 may be on the stator and the U-shaped poles 12 on the rotor. The gaps between neighbouring rotor and stator poles are fitted with nonmagnetic material. The Specification as open to inspection under Sect. 91 (3) (a) describes also particular forms of single-; two-, and three-phase motors, including one in which the stator and rotor members are arranged side by side. This subject-matter does not appear in the Specification as accepted.
Patent GB-887321-A (GB)
Title: Improvements in roller apparatus for supporting and rotating cylindrical objects
Inventor: YATES HERBERT
IPC: B23K37/053
Filed: 1957-03-13
Abstract: 887,321. Work-holders. YATES PLANT Ltd. June 13, 1958 [March 13, 1957; July 10, 1957], Nos. 8254/57 and 1001/57. Class 83 (3). In apparatus for rotating cylindrical work 5, at least one of the rollers 2, 4 supporting the work is supported and driven frictionally by a rotary member 11. The rollers and the driving member may be steel drums or wheels, and the driving member may have a serrated &c. periphery. Alternatively, the rollers and/or member 11 may have a rubber tyre. As shown, Fig. 1, the idler roller 4 and roller 2 are mounted in adjustable frames 1, 3, roller 2 being driven through a worm gearing 13, 14, by a variable-speed electric motor. Roller 2, comprising a drum or a series of wheels, is carried on a shaft 6 mounted at each end, or at the ends and between them, in blocks 7 secured by bolts 9 acting through springs 10 which may be compressed to increase the pressure between roller 2 and driving member 11. Stop-screws 16 prevent excessive pressure. Alternatively, only one of the bearings of roller 2 may be a floating bearing 7, and a rigid disc on each supporting roller and of smaller diameter than the rubber tyre of the roller may prevent excessive pressure between the rollers and driving member. As shown in Fig. 2, the rollers 21 are mounted in pairs between brackets 24 pivoted about the axle of the driving wheels 28 which are driven, through reduction gears 32 and chains 29, by electric motors 33 controlled as in Specification 687,290. The rollers each comprise a pair of axially-spaced wheels which remain in contact with driving wheels 28 during pivotal movement of the frames between stops 38, 39. Screws 35 bearing against sliding bearings 27 of axles 26 adjust the bearing pressure between the rollers and wheels 28, and stop-screws 37 in bearings 27 contact the brackets to prevent excessive pressure. Rollers 40, or shoes, on springs 41 engage the work and rock the brackets into position to receive the work; alternatively, this could be effected by a sector-rack and a pinion. If the rollers are without rubber tyres, the bearing pressure may be applied through a spring. For long work, one or more sets of idler apparatus may also be used, in which the rollers rest against idler wheels or their supporting brackets pivot without yielding abutments.
Patent GB-431511-A (GB)
Title: Improvements in and relating to magnetic alloys
IPC: C22F1/10
Filed: 1933-12-05
Abstract: Wires or bands of magnetic alloy for employment in constructing electrical equipment which in use involves the effects of small magnetic fields have a thickness not exceeding 0,03 mm. and are incompletely annealed after a preceding cold working in order to improve the constancy of permeability under working conditions.  The incomplete annealing consists of a heat treatment carried out at such temperature and for such time as will modify the magnetic properties of the material appreciably, but not to the extent obtained by heating above the critical temperature.  This temperature is usually below 500 DEG  C., and is frequently 400 to 425 DEG  C., and the duration of the treatment is usually a few minutes, but may be made longer if lower temperatures are utilized.  Specifications 260,039, [Class 72], and 343,179, [Group XXXVI], are referred to.
Patent GB-945615-A (GB)
Title: Automatic copying machines
Inventor: BERTRAM BENJAMIN QUESENEURY
IPC: B23Q35/18
Filed: 1960-03-10
Abstract: 945,615. Copying. SPERRY GYROSCOPE CO. Ltd. March 3, 1961 [March 10, 1960], No. 8484/60. Headings B3B, B3K and B3L. An automatic copying machine comprises a carriage mounted for movement in two mutually perpendicular axes on a support under the control of two drive motors, a main templet and a probe, one carried by the carriage and the other by the support and a workpiece-holder and a tool-holder one carried by the carriage and the other by the support, the probe being tiltable about any axis in a plane parallel to the plane containing the axis of the carriage to actuate signal-generating means for energizing the two motors. A tool 7 for performing an operation on a workpiece 8 is carried by a fixed support 6 on which a prove 1 is also carried. The workpiece 8 and a pair of templets 4, 30, are carried on a slide 9 movable by a fluid pressure piston 27 along guide rails 12. The latter are arranged on a support 10 movable transversely to the slide 9 on guide rails 14 by means of a fluid-pressure piston device 28. The probe 1 has a " ballend " 5 for contacting the main templet 4 and a bias weight 29 to give it a movement towards this templet. An arm 31 projecting from the probe is adapted to contact the auxiliarytemplet 30 and to rotate the probe 1 so as to bring the bias weight into different positions. The upper end of the probe is provided with an equatorial plate 3, movements of which are detected by electromagnetic pick-off devices 17, 18. These provide electric signals which are passed to amplifiers 21, 22 and thence to electrohydraulic valves 23, 24, respectively, which control the supply of hydraulic fluid to the devices 27, 28 moving the slides.