baber/WOPTO huggingface dataset:
Patent GB-131191-A (GB)
Title: Improved Electrical Switch.
Inventor: BONNELLA ALBERT JOHN
IPC: G05G5/06
Filed: 1918-09-16
Abstract: 131,191. Bonnella, A. J., and Damey, R. K. Sept. 16, 1918, Switches, quick-brcak.- The spring 12 which produces the quick break connects the bridging contactmember 8 and the cone member 15, both of which are loosely mounted on the operating-spindle 9, which passes in a watertight manner through the casing and has a handle 17 at each end; the spring serves both to produce the quick-break and to retain the switch set in the closed position. The " fixed " contacts, which are pivoted on conducting-plates 5 on which the circuit terminals are mounted, have a hook formation at one end and a roller at the other. To close the switch, the upper handle is depressed and the collar 10 upon the spindle carries down the bridge contact which compresses the spring which, in turn, presses upon the cone member, the sides of which bear against the rollers and tend to separate them and consequently bring the hooked contact parts 7 closer together. The bridge member slides between the contact plates separating them slightly and thereby lifting the cone member and further compressing the spring slightly, and, finally, the bridge member is retained by the hooked ends of the contacts. The spring acting on the bridge contact tends to push aside the hooked contacts, but at the same time, acting through the cone member, it tends to maintain the contacts hooked upon the bridge member, and, in the latter action, the spring has the greater leverage and, consequently, the switch remains closed. It is opened by pressing inwards the other end of the actuating-rod, thereby raising the cone member and unlocking the contacts and further compressing the spring so as to ensure the release and rapid " off " movement of the bridge member. A small pressel switch, according to the invention, is shown in Fig. 3, in which one press-button 29 carries the movable contact 24, and a rod sliding telescopically in the other press-button 27, which has a conical formation 26 engaging the ends of the '' fixed " contacts, which are pivoted on the circuit terminals 22 and formed with hooks at their other ends.
Patent GB-773717-A (GB)
Title: Ventless delay electric initiators
Inventor: WOODBURY NORMAN HOPTON
IPC: F42B3/16
Filed: 1955-05-25
Abstract: 773,717. Electric ignition fuzes. IMPERIAL CHEMICAL INDUSTRIES, Ltd. Jan. 27, 1956 [May 25, 1955], No. 15050/55. Class 9 (1). A ventless delay electric igniter suitable for igniting propellants comprises a metal casing 1 containing a base charge 2 of blackpowder above which is a primer charge 3 sufficient to disrupt the casing, a delay element 5 and an electric fuzehead 7 extending through a resilient plug 8 sealing the casing. The charge 2 may be a sulphurless fine grain blackpowder consisting of 70 parts potassium nitrate and 30 parts charcoal. Charge 3 may be a lead azide / lead styphnate / aluminium mixture, above which is a layer 4 of lead dinitro resorcinate precipitated in the presence of sodium carboxymethyl cellulose and the delay element is a metal sleeve filled under pressure with a composition consisting of 36 parts antimony and 64 parts potassium permanganate.
Patent GB-476032-A (GB)
Title: The manufacture of condensation products from diazines and aldehydes
IPC: C08G12/28
Filed: 1937-05-31
Abstract: Diazines of the general formula <FORM:0476032/IV/1> (wherein X and Y stand for hydrogen or monovalent radicles which may be members of mono- or poly-nuclear carbocyclic or heterocyclic rings) are condensed with aldehydes or compounds splitting off aldehydes.  The condensation may be effected in neutral, acid or alkaline medium, in the cold or hot, and in organic or inorganic liquids or melts.  The condensation may be effected in the presence of fillers or dyestuffs or the products may be mixed with fillers or dyestuffs.  Other compounds capable of condensation with aldehydes may be added to the condensation mixture.  The resins may be employed in admixture with other natural or artificial resins such as phenol, urea, aniline, alkyd and ketone resins.  The products which are resistant to heat and stable to light may be used as electric insulation, for moulded articles, and as lacquers or impregnating agents.  In examples, 2 : 4 : 6-triaminopyrimidine or 2 : 4-diaminoquinazoline are condensed with formaldehyde.  Reference has been directed by the Comptroller to Specification 455,008.
Patent GB-882968-A (GB)
Title: Improved potentiometer output function transmitting means
IPC: H01C10/16
Filed: 1960-04-29
Abstract: 882,968. Resistance networks. BENDIX CORPORATION. April 29, 1960 [May 8, 1959], No. 15206/60. Class 40(8). A dual potentiometer arrangement developing a first variable output voltage representing an input displacement over a given range and a second variable output voltage representing the input displacement over a predetermined fraction of said range, comprising first and second potentiometers having their resistances connected across voltages corresponding respectively to the given range and to the fraction thereof, with movable arms driven by the input displacement at gear ratios respectively corresponding to the extents of such ranges; the first potentiometer arm being connected to a first output device to transmit a variable voltage to it and the second potentiometer arm being connected to a second output device over a switch operated from the input displacement to transmit to the second output device a variable voltage determined by the position of the second arm over the required fraction of the range of displacement of the first arm and to transmit fixed voltages corresponding to the boundaries of the fractional range throughout the remainder of its displacement. A rotary input from motor 50 is geared to rotate the arm 7 of a potentiometer 1 energised from A.C. source 5 and is also geared up to rotate the arm 20 of a potentiometer 12 energised from the A.C. source through resistances 16, 18 at opposite ends of the resistor element 14. The output of potentiometer 1 representing the input rotation over the full range of variation is applied to computer device 10, while the arm 32 of a rotary three-segment switch 26 applies an output from potentiometer 12 representing the input rotation over a predetermined limited range within that of potentiometer 1 to a computer device 36. Initially, arm 32 lies on segment 30 to supply a constant output to 36 determined by resistance 16 in series with 14 and 18, and after a given input rotation contacts segment 24 to deliver a variable output from potentiometer 12. After a further given input rotation arm 32 contacts segment 32 to give a further differing constant output determined by resistance 18 in series with 14 and 16. Resistance element 14 of potentiometer 12 has conductive end extensions 33, 35 and is synchronised with switch 26 so that arm 20 passes over the junction of such contacts with the resistance element as arm 32 passes from segment 30 to 24 and 24 to 28 respectively.
Patent GB-151326-A (GB)
Title: Improvements relating to shock absorbing devices applicable to motor vehicles, motorcycles, side cars and the like
IPC: B62K25/20
Filed: 1919-06-17
Abstract: 151,326. Levy, D. June 17, 1919. Spring devices. - Shock-absorbing devices of the kind described in Specification 136,655 are applied to motor vehicles, motor-cycles, side-cars, &c. as resilient and pivotally mounted connectors or links of the framework. Fig. 1 shows the device applied to the wheel axle g of a vehicle such as a side-car. The axle is carried in a guideblock h, which slides, against the action of springs o and checksprings o<1>, over guidebolts k secured at each end to a supporting-plate e. The axle passes through slots in the plate e, which has lugs e<3> pivoted in recesses in a bracket a clamped to the side tube b of the frame so that the axle may tilt freely when subjected to a shock at one end. The springs o<1> may bear against shoulders on the bolts k and against the ends of bosses j<1> which surround the bolts k and are secured to the guide-blocks h. Fig. 3 shows rear suspension for a motor-cycle in which two such shock absorbers are pivoted to the cycle frame by means of a bolt f passed through their supporting-plates e, the slide-blocks h being connected by a bolt f<1> to a triangular fork-frame p pivoted to the main frame at p<1> and carrying the wheel at its third corner.
Patent GB-680160-A (GB)
Title: Improvements relating to brake magnet units for electricity meters
Inventor: WOLFENDEN RONALD HARCOURT
IPC: G01R11/10
Filed: 1950-06-19
Abstract: 680,160. Eddy-current brakes. MEASUREMENT, Ltd. May 25, 1951 [June 19, 1950], No. 15244/50. Class 35. Meter errors due to ambient temperature variations are corrected in a U - shaped brake-magnet 1 by means of a strip of material 3 having a negative permeability temperature coefficient situated between the poles of the magnet. The strip is U-shaped with the bight of the U situated so that it spans the magnet poles near their extremities. The strip and magnet are embedded in moulded non-magnetic material 6 and secured at bolt-holes 7 which also extend through the ends of the strip.
Patent GB-798901-A (GB)
Title: 4-tert.-butyl-alpha-methyl-hydrocinnamic aldehyde
IPC: C11B9/00
Filed: 1957-05-14
Abstract: The invention comprises 4-tert.-butyl-alpha-methyl-hydrocinnamic aldehyde, which is prepared in an example by condensing p-tert.-butyl-benzaldehyde with propionaldehyde in methanol medium with the addition of aqueous sodium hydroxide solution to give 4-tert.-butyl-alpha-methyl-cinnamic aldehyde, which is hydrogenated in the presence of Raney nickel or palladium on charcoal to give 4-tert.-butyl-alpha-methyl-hydrocinnamic aldehyde containing a small proportion of 4-tert.-butyl-alpha-methyl-hydrocinnamic alcohol.  The compound of the invention has a flowery odour and is used in toilet preparations (see Group VI) and soaps (see Group III).ALSO:4 - Tert. - butyl - alpha - methyl - hydrocinnamic aldehyde (see Group IV (b)) is used as a perfume in soap compositions.  In Examples, 4 - tert. - butyl - alpha - methyl - hydrocinnamic aldehyde, either alone or as an ingredient in a soap perfume composition, is incorporated in white soap stock.ALSO:4 - Tert. - butyl - alpha - methyl - hydrocinnamic aldehyde (see Group IV (b)) has a flowery odour and is used in toilet preparations.  In examples: (1) a cold cream prepared by adding an aqueous borax solution to a solution of beeswax in mineral oil with stirring was perfumed with 4-tert.-butyl-alpha-methylhydrocinnamic aldehyde and other perfume ingredients were prepared.
Patent GB-1329511-A (GB)
Title: System for forming the fourier transform of a function
IPC: G06F17/14
Filed: 1971-05-17
Abstract: 1329511 Fourier transforms COMMISSARIAT A L'ENERGIE ATOMIQUE 17 May 1971 [26 May 1970] 15315/71 Addition to 1271665 Heading G4A The analogue system described in the parent Specification for generating Fourier transforms of a real function z(t) known in an interval of width 2T in the form of samples z(p#) spaced at equal intervals # where and comprising a means for forming the product of z(p#) and cos (T1/T)kp# and/or of z(p#) and sin (T1/T)kp# where 1 # k # T/# and a means for summing all the consecutive products, each sum representing the sampling point in relation to the Fourier frequency k/2T is improved in that the consecutive samples cos (T1/T)p# and sin (T1/T)p# are stored at consecutive addresses of a digital store and the partial products and the sums are obtained digitally. As described the system comprises a generator 10 whose output A delivers the function z(t) in the form of samples z(p#), a generator 12 whose output B delivers the cosine function (T1/T)kp#, a multiplier 14 generating A x B, an integrator 16 for accumulating the products, and a clock 18. The generator 12, Fig. 2 (not shown), may comprise a counter driven by the clock pulses and feeding an accumulator which addresses a read only store containing at consequentive addresses successive cos (or sin) functions. The read only memory may be a diode matrix. The generator 10, Fig. 3 (not shown), may comprise an A-D converter operating on the function z(t) and connected to a store. The functions A and B may be given as 8 parallel bits plus a sign bit, a separate circuit providing the sign data to the integrator 16. The output of the integrator 16 may be fed to a D-A converter. In a further embodiment, Fig. 5 (not shown), a spectral analyser is described in which the generator 10 may be replaced by an analogue correlator receiving inputs x(t) and y(t) and being connected via an A-D converter to a store. The store may be used to supply the Fourier transform in real time or delayed relative to the correlator by several hours. The system may be used in calculating spectrum energy densities.
Patent GB-272524-A (GB)
Title: Improvements in or relating to dynamo electric machines
IPC: H02P9/12
Filed: 1927-06-09
Abstract: 272,524. International General Electric Co., Inc., (Assignees of Allgemeine Elektricitõts-Ges.), June 9, 1926, [Convention date]. Exciting; protective devices, auxiliary. - The voltage of a generator is reduced to zero and its residual magnetism is cancelled on the occurrence of a short-circuit or similar abnormal condition by connecting the field circuit of its exciter acrossa voltage divider energized from an external voltage source so that the exciter fields are reversed in abnormal conditions. In the arrangement shown, an auxiliary exciter a and potential divider b are used, and the main exciter d of the generator g which is being protected is excited across a portion 4, 5 of the divider through a reversing switch u. The Figure shows the connections for normal working. In case of - short-circuit on the generator g, the switch is thrown, without breaking the circuit, from contact 1 to contact 3, so that the current in the exciting coil c of the main exciter d is due to the counter-directed drop on the portion 5, 6 of the divider in place of the original drop on the portion 4, 5 and is thus reversed. A changeover -resistance w may be included to prevent short-circuit on the machine a. The counterdrop is preferably so chosen that the reversed exciting current in the coil c annuls the residual voltage of the generator g. The reversed excitation may also be adjusted to a higher value, in which case the connection between the armature and field coil d, e is arranged to be broken as soon as the exciting current or voltage at the machine terminals reaches its zero value. The Specification, as open to inspection under Sect. 91 (3) (a) contains also a general claim to the de-excitation of generators by converting their shunt-wound exciters into series-wound machines by any method whatever, a resistance being connected in parallel with the exciting winding. This subject-matter does not appear in the Specification as accepted.
Patent GB-1168923-A (GB)
Title: Drive Apparatus and Typewriter Incorporating such Apparatus
IPC: F16D61/00
Filed: 1967-04-05
Abstract: 1,168,923. Typewriters. INTERNATIONAL BUSINESS MACHINES CORP. 5 April, 1967 [22 April, 1966], No. 15516/67. Heading B6F. [Also in Division F2] Auxiliary power-drive mechanism -A typewriter drive mechanism comprises a driven shaft 3 connected by a coil spring clutch 5 to a continuously rotating drive shaft 1 and carrying a disc 15 having a shoulder 14 engageable by the end of a stop lever 9 mounted on a pivoted arm 27, the moments of inertia of the rotary driven elements and of the pivoted stop mechanism being equal so that lever 9 will arrest rotation of shaft 3 without rebound. Movement of lever 9 in relation to disc 15 is controlled by a link 13, and lever 9 has an arm 19 for effecting conjoint movement of a lever 7 loaded by a spring 11 and controlling the engagement and release of clutch spring 5. Arm 27 carries inertia weights 35 and rotates under the joint control of a return spring 31 and dashpot 39, the spring normally holding the end of the arm against an abutment 33. Reverse rotation of shaft 3 by clutch spring 5 is prevented by a pawl and ratchet 21, 23.
Patent GB-496734-A (GB)
Title: Improvements in fabrics for gas masks and protecting garments
IPC: A62D5/00
Filed: 1937-06-04
Abstract: One or more layers of fabric having a pile which is woven or artificially produced are sandwiched between layers of plastified vinyl resin, and the assembly is covered by outer layers of flexible fibrous material.  The vinyl resin may be polyvinyl ester, polystyrol, condensation product of polyvinyl alcohol with one or more aldehydes, or polymerized vinyl acetylenes, and may contain a fire-proofing agent.  In an example, the plastified vinyl resin comprises polyvinyl aceto formal, pentachlorodiphenyl, butyl phthalate, denatured ethyl alcohol, toluol and methylene chloride. Specifications 430,136 and 474,598 are referred to.
Patent GB-263062-A (GB)
Title: An improved gear wheel
IPC: F16H55/14
Filed: 1925-06-16
Abstract: 263,062. Goldsbrough, R. E., Pease, J. F., and Goldsbrough Patents Co., Ltd. June 16, 1925. Channels and reservoirs in toothed, friction, and other gear wheels.- Laminated toothed, friction, and other gear wheels in which the laminae a are V-grooved, have end plates d, e, one of which is provided with a hub g, shaped to engage the end laminae, and are so formed as to leave an annular chamber h to contain lubricant inserted through a plugged hole.
Patent GB-476054-A (GB)
Title: Improvement in weighing scales
IPC: G01G19/46
Filed: 1936-06-05
Abstract: 476,054. Weighing-apparatus. GREENLEAF, W. H. June 5, 1936, No. 15784. [Class 143] A weighing-apparatus comprises a platform resting on rockers which are provided with arms supporting a spider, the movements of which are resisted by a weighing-spring. The platform 13 is supported at each end by a pair of knife-edge bearings formed in the horizontal portions of rockers or bell-crank levers 15. Each bell-crank lever has two downwardlyextending arms 17 and these arms are pivotally connected by a spider 18 stressed by a weighing- spring 23 and connected to a dashpot 39. A rack 28 secured to the spider 18 actuates a pinion 29 attached to the shaft of the indicating dial 35. The dial is viewed through an orifice in the platform. The spider may be composed of two portions pivoted together, each portion embodying two of the branching arms 19 at one end. The weighing spring 23 may be adjusted by a head 26. When a load is placed on the platform, the bell-crank levers 17 are rocked to displace the spider 18 against the resistance of the spring 23, and the rack 28 rotates the dial 35 to indicate the weight.
Patent GB-353150-A (GB)
Title: Differential change-speed gear
IPC: F16H37/08
Filed: 1930-05-22
Abstract: 353,150. Variable speed gearing. TSCHERNE, A., 22, Kronenstrasse, Rorschach, Switzerland. May 22, 1930, No. 15787. Convention date, Oct. 3, 1929. [Class 80 (ii).] Variable-speed gearing comprises a bevel epicyclic train 2, 3, 14, in which the planet carrier 5 is driven through roller and disc variable gearing 9, 10. The sliding roller 10 is keyed on a sleeve 1, which may be the driving element, and carries the pinion 2. The disc 9 carries a bevel wheel 7 in mesh with a wheel 6 of twice the diameter on the carrier 5. A shaft 4, which, alternatively, may be the driving member, is secured to the carrier 5 as shown. When the shaft 4 is rotated with the roller 10 in the position shown the shaft 1 and pinion 2 rotate at twice the speed, the pinion 14 and secondary shaft 16 remaining stationary. If the roller be moved to the left the shaft 16 is rotated with continuously increasing speed.
Patent GB-378994-A (GB)
Title: Improvements in electric discharge devices
IPC: H01J19/50
Filed: 1931-05-29
Abstract: 378,994. Discharge apparatus. M-0 VALVE CO., Ltd., Marconi House, Strand, London, and McLEOD, A. E., of General Electric Co., Wembley, Middlesex. May 29, 1931, No. 15790. [Class 39 (i).] Wires 3, especially electrode-support wires, are positioned by a metal band 7 enclosing a flexible insulating sheet 8 which is pressed upon and deformed by the wires. Two metal members may be used, one on each side of the wire, and the end of one folded over the end of the other. In one method of making the support, a ring of mild steel is deformed to have two parallel sides, and strips of mica are placed across the wires. The ring is slipped on and the structure placed upon the die 12 in a transverse slot, the teeth 13 spacing the wires, and the grooves 14 receiving them. The upper die 11, adapted to fit in the transverse slot, has grooves 15 to receive the wires. In another method a rectangular sheet of metal has a rectangular hole cut out and is bent into hairpin shape so as to have parallel sides 7, Fig. 11, and a space 18. Mica strips 8 are inserted around the wires and the structure pressed as before. Copper, nickel, or copper-nickel alloys may be used as the metal. The Provisional Specification states that the invention is applicable to electrode-support wires for discharge lamps.
Patent GB-713655-A (GB)
Title: Improvements in or relating to instruments for performing calculations
Inventor: FRIEDLANDER ERICH SIEGFRIED
IPC: G06G1/14
Filed: 1951-07-03
Abstract: 713,655 Calculating-apparatus GENERAL. ELECTRIC CO., Ltd. July 3, 1952 [July 3, 1951], No. 15792/51. Class 106 (1) Calculating apparatus comprise a first member and three other members slidable in parallel directions relatively to the first member and to each other, two of the latter members overlapping and being marked with or having edges formed to curves representing the functions log 1/sin # and by 1/cos # respectively, where # is represented on a linear scale, and the remaining member providing a cursor for co-operation with the other members and bearing a scale which is a linear angular scale as a function thereof. In order to determine the modulus Z and argument # of a complex number R+jx, e.g. in electrical circuit calculations, plates G, J having edges H, L shaped to the above-mentioned functions are adjusted longitudinally of a frame B, C, D, E according to the logarithms of R and X as indicated by logarithmic scales V, T. A cursor arm M is then used to read on the scale V the ordinate of the intersection of the edges H, L which correspond to the modulus, and the abscissa which corresponds to the argument # may be read from a scale Q on the cursor arm. The cursor arm may be provided additionally or alternatively with a scale representing a trigonometrical function of the angle #, e.g. log #. To facilitate further calculations, a reciprocal scale may be marked on the frame member C in which is slidable a further member P bearing reciprocal logarithmic scales. The plates G, J have upper edges W, Y shaped to represent the function 2 log 1/sin # and 2 log 1/cos # suitably spaced from the other edges. If these curves are positioned by means of the scales V, T according to the logarithms of two numbers, it is shown that the ordinate to their intersection represents logarithmically the sum of the two numbers. Thus a calculation involving both addition and multiplication may be carried out on the apparatus. If the plates G, J are transparent, the curves W, Y may alternatively be marked thereon or instead of these curves, the apparatus may carry a logarithmic square scale for a similar purpose. The plates G, J have portions F, K which embrace the inner one of the two frame members C and the member B respectively. The cursor arm M: has a portion embracing the upper parts of the two frame members C. Alternatively, the plate J is secured to the under surface of a slide running between two separate parts forming the frame member B and the plate G is similarly secured to a slide running between two of the frame members C.