baber/WOPTO huggingface dataset:
Patent GB-666088-A (GB)
Title: Improvements in or relating to apparatus for generating electrical oscillations and for providing automatic frequency control of those oscillations
IPC: H03L7/02
Filed: 1949-05-26
Abstract: 666,088. Automatic frequency control systems. GENERAL ELECTRIC CO., Ltd., and JACKSON, P. J. May 17, 1950 [May 26, 1949], No. 14154/49. Class 38 (iv). An automatic frequency control system comprises two synchronous electric motors 1, 2 (Fig. 1), driven from separate L.F. oscillators 3, 4 and adapted to drive a common tuning shaft 5 through differential gearing 6 to maintain constant the frequency of oscillation of an R.F. generator 7. Part of the output of the generator 7 of frequency F1 is fed to a mixer 8 together with oscillations from a second generator 9 of lower frequency F2 the resulting oscillation of frequency F1-F2 being fed through an amplifier 10 to a frequency discriminator 11 tuned to the frequency F-F2 where F is the required frequency of oscillation of generator 7. The output of discriminator 11 is therefore a unidirectional voltage of magnitude and sense depending upon the difference between the frequencies F and F1 so that at the correct frequency F of generator 7 there will be no output from discriminator 11. If, however, the generator 7 output frequency varies the resulting output from discriminator 11 is applied in opposite senses to the control grids of a valve comprising two triodes 12, 13 which act as variable resistances across the oscillator valves of L.F. oscillators 3, 4 to alter the frequencies generated in opposite directions so that when these frequencies are applied via amplifiers 25, 26 to the motors 1, 2 the speed of one motor is caused to increase and that of the other to decrease, thereby imparting a movement to the tuning shaft 5 in a sense to restore the frequency of generator 7 to the value F. The invention may be applied to control the frequency of a " slave radio station with respect to that of the " master " station, Fig. 3 (not shown). In this case the generator 9 is replaced by a part of the oscillation transmitted from the master station, the frequency difference F-F2 being made equal to the I.F. of the stations. A voltage limiter is interposed between the amplifier 10 and discriminator 11 to control a pentode valve connected in parallel with one of the variable resistance valves of one of the L.F. oscillators so that in the absence of any received oscillations from 9 the generator 7 is caused to sweep out its frequency range ready for " locking on " when received oscillations commence. A reversing switch is provided on the shaft 5 so that the shaft will rotate alternately in opposite directions over the frequency range.
Patent GB-701539-A (GB)
Title: Improvements in and relating to machines for manufacturing wire fabric
Inventor: WAKEFIELD JOSEPH ANTHONY
IPC: B21F27/04
Filed: 1950-03-15
Abstract: 701,539. Making wire fabric. DURAFENCING, Ltd. June 15, 1951 [March 15, 1950], No. 14181/51. Divided out of 701,512. Drawings to Specification. Classes 83 (2) and 83 (4) Coiling.-The subject-matter of the invention is contained in Specification 701,512 but the claims are directed to winding means for the chain link fabric driven through a one-way clutch by a crank mechanism with a shoe engaging the periphery of the coiled fabric for maintaining constant the speed of winding.
Patent GB-253350-A (GB)
Title: Improvements in automatic telephone systems
IPC: H04M19/02
Filed: 1925-05-29
Abstract: 253,350. Standard Telephones & Cables, Ltd., (formerly Western Electric Co., Ltd.). and Nash, G. H. May 29, 1925. Automatic exchange systems.-Instead of driving all the interrupters in an office by a single motor, separate small induction or synchronous motors 15, 16 are provided for small groups of interrupters and are driven by single or polyphase currents of one or more frequencies supplied by a motor generator set 1, 3, the speed of which is kept constant by a governor and current for which is derived for example from the exchange battery. This allows groups of interrupters to be driven only when necessary. In cases where it is necessary for different groups to run at different speeds the motors may all be of one type while the generator supplies different frequencies from slip rings 11, 13, or a single frequency may be supplied, the motors of the different groups being differently wound.
Patent GB-1534070-A (GB)
Title: Process for the stability of a macrolide antibiotic
IPC: A61K9/14
Filed: 1976-04-08
Abstract: 1534070 Stabilized macrolide antibiotics MEIJI SEIKA KAISHA Ltd 8 April 1976 [8 April 1975] 14234/76 Heading A5B A stable composition comprising an amorphous solid containing a macrolide antibiotic and at least one cellulose polymer is prepared by spray drying a solution in an organic solvent of only a macrolide antibiotic and at least one cellulose polymer such as ethyl cellulose, hydroxy propyl cellulose, hydroxy propyl methyl cellulose, and hydroxy propyl methyl cellulose phthalate. The antibiotic may be midecamycin, kitasamycin, josamycin. erythromycin, spiramycin, malidemycin and derivatives thereof such as 9-acetyl-3"-acetylmidecamycin, acetylkitasamycin, josamycin propionate, erythromycin stearate, ethylsuccinate or lactobionate. The solvent may be benzene, dichloromethane, 1, 1, 1-trichloroethane or chloroform.
Patent GB-515743-A (GB)
Title: Improvements relating to vehicle direction indicators
IPC: H01H7/12
Filed: 1938-05-13
Abstract: 515,743. Retractive switches. TRICOFOLBERTH, Ltd. (Trico Products Corporation). May 13, 1938, No. 14282. [Class 38 (v)] [Also in Group XXXVIII] In a switch having a delayed return action, upon the arm 14 being displaced, the switch plate 5 is moved to complete a circuit over contact 3 and prepare a circuit for an electromagnet 48 which prevents an escapement wheel 46 from rotating when the circuit is completed over a switch (not shown) operated by the suction of an engine. Plates 38, 39 carrying the arm 14, are a friction grip on gear wheel 33, a projection 44 engaging a spring 27, the gear 33 engaging a train of gears terminated by a star wheel 45 engaging the escapement wheel 46. When the arm 14 is displaced, the plates 38, 39 slip over gear wheel 33, one end of spring 27 being displaced. The switch is retained in its operated position until the throttle is opened allowing the suction-operated switch to release, whereupon the escapement wheel is allowed to move and the arms 5, 14 are returned .to normal under the action of spring 27. The arm 5 is shaped so that after a small movement, the circuit through the magnet 48 may not be recompleted by the suction-operated switch closing while the signal-operating circuit is maintained until the switch arm nearly reaches its normal position. According to the Provisional Specification the suction-operated switch may be of the normally closed type.
Patent GB-436782-A (GB)
Title: Improvements in means for cutting metal sheets
IPC: B60B37/04
Filed: 1935-05-16
Abstract: 436,782. Shearing. SCHLOEMANN AKT.-GES., 13, Steinstrasse, D³sseldorf, Germany. May 16, 1935, No. 14327. Convention date, June 4, 1934. [Class 83 (iv)] Sheet metal from rolling-mills is cut into strips by circular blades arranged side by side on a path curved to correspond with that of rolled metal sheet. The pairs of cutters are adjustable along and radially to the path. As shown, a gate-like standard 1 is provided with two curved guiding paths 2 for the work B, and pairs of rotary cutters 4 are driven independently by motors 5. The outer cutters are edge trimmers and intermediate cutters divide the sheet into strips. The cutters are adjustable along the guiding paths to obtain different spacing of the cuts by means of toothed arcs, pinions and hand wheels 8. Pointers 9 move over a curved scale 10 for indicating the setting. Cutter heads 11 are adjustable on the carriers radially and the carriers 3 are slidable along the paths 2.
Patent GB-185476-A (GB)
Title: Fuel oil burners
IPC: F23C99/00
Filed: 1921-05-23
Abstract: 185,476. Hoffman, W. M. May 23, 1921. Porous block burners; vaporizing-apparatus.- A liquid-fuel burner is made with a casing a, Fig. 1. jacketed for a portion of its length, surrounding a porous refractory core b through which liquid fuel, passing from the jacket c through perforations e, is forced for combustion with air or steam supplied by a nozzle g. In one form the liquid-fuel jacket c, Fig. 2, is provided with a median wall f to prevent oil from flowing into the lower part of the jacket. Apertures may be provided in the median wall f to allow a small portion of the oil to flow to the lower section of the jacket. In another form the oil is heated before entering the jacket by passing through a hollow ring disposed in front of the combustion chamber so as to be heated thereby.
Patent GB-1135425-A (GB)
Title: Rotary piston internal combustion engines
IPC: F02B53/00
Filed: 1966-03-31
Abstract: 1,135,425. Rotary-piston I.C. engines. TOYO KOGYO K.K. March 31, 1966 [April 19, 1965], No.14371/66. Heading F1F. In a rotary-piston I. C. engine of the trochoidal n and n + 1 lobe type, the planetary motion of the piston 10 is controlled by an internally-toothed ring-gear 13 that is carried by the piston and meshes with an externally-toothed gear 14 fixed to an end-wall 4 of the engine casing 1, the gear 13 being secured to the piston by a plurality of axially-orientated longitudinally-split resilient tubular pins 17 to minimize shock-loading of the gears caused by sudden changes in the torque transmitted thereby. The pins are retained in bores or holes 15, 16 in the gear 13 and the piston, respectively, by the adjacent wall 4.
Patent GB-1298574-A (GB)
Title: Resinous bodies
IPC: B29C70/20
Filed: 1970-03-25
Abstract: 1298574 Filament-reinforced resinous bodies CELANESE CORP 25 March 1970 [1 April 1969] 14453/70 Heading B5A Filament-reinforced resinous bodies are produced by placing the filamentary reinforcement in a heat-shrinkable mould, heating the mould to compact the reinforcement, introducing a fluid resin into the mould to fill the interstitial spaces in the reinforcement and solidifying the resin. The mould may be an open-ended tube e.g. of a polyolefine. The filamentary reinforcement may be carbon, glass, asbestos, boron, aluminosilicate, sapphire, silicon carbide or regenerated cellulose. The resin may be thermosetting e.g. epoxy, polyester, phenolic, polyimide, polybenzimidazole, or thermoplastic e.g. phenoxy, polysulphone, polyamide, polyoxymethylene.
Patent GB-341821-A (GB)
Title: An improved process and apparatus for the mixing of granular or like materials
IPC: B01F29/63
Filed: 1930-05-10
Abstract: 341,821. Mixing-apparatus. KRUPP GRUSONWERK AKT.-GES., F., Buckau, Magdeburg, Germany. May 10, 1930, No. 14489. Convention date, May 11, 1929. [Class 86]. Granular material is mixed in a rotating drum by being continuously fed to a compartment from which it passes as a batch to one or more other compartments in which it is mixed, and is then continuously discharged. In the form shown, the material is fed through one or more shoots 4 to the compartment 5 from which it passes through an opening 23 to a compartment 7 fitted with staggered baffles 9. From the compartment 7 the material passes to an adjacent compartment 8 similarly fitted with baffles and is discharged through an opening 14 into a chamber 6 fitted with radial vanes 17 of variable length which lifts the material on to the face of a cone 18 having openings 19 fitted with masking blades 20; by these means the material is continuously discharged into a fixed shoot 24.
Patent GB-732552-A (GB)
Title: Improvements in or relating to electrical devices provided with metal caps, and to the manufacture of such caps
IPC: H01J5/50
Filed: 1952-06-09
Abstract: Metal caps for lamps are composed of aluminium (including alloys of aluminium) and both the exterior and interior surfaces of the caps are provided with an adherent layer of substantially non-porous aluminium oxide to prevent corrosion.  According to one method of forming the oxide layer the cap is immersed for 3-5 minutes in a solution of crystalline sodium carbonate, anhydrous potassium chromate and distilled water maintained at a temperature of 90-100 DEG  C.  After washing, the oxide layer is sealed and hardened by immersion in a solution of sodium silicate and distilled water maintained at 90 DEG  C. and the cap is again washed.  In another method the cap is first etched by immersion in a solution of hydrofluoric acid, nitric acid and distilled water and after washing is immersed in a solution similar to that used in the first method plus sodium metasilicate.  The oxide layer is sealed and hardened as before.  In a further method a solution of anhydrous sodium carbonate, anhydrous sodium chromate, crystalline disodium hydrogen phosphate, and distilled water is used and the oxide layer is sealed as in the previous methods.
Patent GB-789432-A (GB)
Title: Preparation of mercury-containing fungicides, and compositions containing them
IPC: C07F3/14
Filed: 1956-05-10
Abstract: The invention comprises the compounds 2,4-diamino - 6 - ethylmercurythio - and 2 - amino-bis(4,6 - ethylmercurythio -) - 1,3,5 - triazine of formula: <FORM:0789432/IV (b)/1> where X is NH2 or S-Hg-C2H5.  They may be prepared by reacting an alkali metal salt, preferably the sodium or potassium salt, of 2,4-diamino - 6 - mercapto - or 2 - amino - 4,6 - dimercapto - 1,3,5 - triazine with an ethyl mercury halide, preferably the bromide.  The reaction may be carried out in a solvent, preferably an aqueous alcohol.  The compounds of the invention may be used as soil and foliage fungicides (see Group VI).  The examples describe the preparation of both compounds.ALSO:Fungicidal compositions for treating soil and foliage comprise 2,4-diamino-6-ethyl mercury thio- or 2-amino-bis-(4,6-ethyl mercury thio)-1,3,5-triazine of formula <FORM:0789432/VI/1> where X is NH2 or S-Hg-C2-H5, together with a carrier.  Concentrates comprising the active ingredient with a solid carrier (attapulgite clay, pyrophyllite or diatomaceous earth) together with a wetting agent may be formed.  Suitable wetting agents include alkyl benzene sulphonates (sodium decyl or sodium dodecyl benzene sulphonates), polyoxyethylated tall oil or a polyoxyethylated alkyl phenol. Emulsifiable concentrates may be prepared from the substituted triazine, an emulsifying agent such as a polyoxyethylated fatty acid together with a solvent such as xylene or a methylated naphthalene.
Patent GB-901153-A (GB)
Title: Improvements in or relating to electrical systems for speed control
IPC: H02P5/50
Filed: 1960-04-26
Abstract: 901,153. Automatic speed control systems. MIEHLE-GOSS-DEXTER Inc. April 26, 1960 [May 1, 1959], No. 14593/60. Class 38 (4). The speed of a slave load is maintained in correspondence with that of a master load by means of an eddy-current clutch having a coil 18c and an output member coupled to the slave load. Tachometer generators 21, 24, are respectively driven by the master and slave loads and their output voltages are opposed for control of thyratron 50 in series with the coil 18c. In addition, the control voltage for the thyratron comprises components derived from bias source 36 and from potentiometer 38 whose slider 39 is adjusted between stops 72, 73, by means of differential selsyn 70. Selsyn transmitters 25, 26 are respectively coupled to the slave and master loads, the rotor of the differential selsyn receiver being angularly positioned in accordance with the phase displacement of the transmitters. The voltage derived from the potentiometer 38 compensates for non-linearity and non-uniformity in the characteristics of the tachometer generators. In another arrangement, the potentiometer 38 is modified to provide both a compensating voltage and an adjustable bias voltage, Fig. 4 (not shown).
Patent GB-475364-A (GB)
Title: Glands for sealing, bonding and earthing electric cables
IPC: H02G3/06
Filed: 1936-05-23
Abstract: 475,364. Earth-continuity couplings; mechanical couplings for cable sheathing. ROSS, F. A. May 23, 1936, No. 14597. [Class 38 (i)] The sheathing of a cable e is bonded and sealed to a fitting by a split clamp b formed on or attached to the fitting and acting to compress bushes c, d on to the cable. The bush c is of split metal and may be coned to assist in compressing the bush d which is of rubber. If the cable is armoured, the armouring f, Fig. 3, lies outside the bush c, and the clamp b is divided, one half being fixed to the body a and the other half secured to it by two screws. For multiple cables, the bush k, Fig. 5, is grooved to receive the cables that pass through a sealing disc d. In this form the clamp is formed on the separable halves of the fitting. The bush k may be of metal or of rubber. The inlet openings not in use are closed by rubber pads or plastic compound that is cut off or removed to open the required inlets.
Patent GB-734265-A (GB)
Title: Improvements in or relating to end fittings for flexible metal hose, and flexible metal hose units furnished with such end fittings
IPC: F16L33/01
Filed: 1951-06-20
Abstract: 734,265. Hose couplings. MILLAR, J. H., and AVICA EQUIPMENT, Ltd. June 20,1952 [June 20, 1951], No. 14639/51. Addition to 718,261. Class 99 (1). In an end fitting for a corrugated metal hose 1 having a reinforcing covering 2, a sleeve 3 has internal corrugations fitting the hose, and a coupling body 7 has a spigot portion extending within the hose and sleeve. The body and sleeve are drawn together by a ferrule 16 which screws on to a ring 21 engaging behind a flange 8 of the body and is locked by a grub-screw 27. End corrugations of the hose which extend beyond the corrugated portion of the sleeve 3 are crushed between opposed surfaces 5, 11 of sleeve and body and confined by the spigot 10 and by an extension 6 of the sleeve 3 which fits over a stepped portion 9 of the body. A sealing washer 13, which may be a cup-leather, lies between the body and the crushed hose end. The covering 2 is clamped between conical surfaces 14, 17 of sleeve and ferrule. The ferrule may screw on to an enlarged part of the body instead of a separate ring 21. The sleeve 3 is screwed on to a helically corrugated hose. The sleeve is divided for assembly on an annularly corrugated hose.
Patent GB-235214-A (GB)
Title: Improvements in or relating to machine frames
IPC: F16M5/00
Filed: 1925-06-05
Abstract: 235,214. Bolinders Mekaniska Verkstads Aktiebolag, J. & C. G. June 6, 1924, [Convention date]. Planing.-In beds for machinery such as wood planing machines, the main body 1 of the bed is cast with a plane upper surface, and the supports for the machine parts, such as the feeder 2, bottom knife 3, tool box 4, feeder 5, top knife 6, side knives 7, and fillet cutter 6, are separately secured by screwing &c. to the bed. According to the Specification as open to inspection under Sect. 91 (3) (a), offsets may be cast upon the upper surface. This subjectmatter does not appear in the Specification as accepted. Reference has been directed by the Comptroller to Specifications 2923/87, 3466/90; and 10295/93, [Class 83, Metals, Cutting &c.].
Patent GB-634223-A (GB)
Title: Improvements in a buckle assembling cob
IPC: A44B11/00
Filed: 1947-06-03
Abstract: 634,223. Packing. BURGESS, A. F. (International Cellucotton Products Co.). June 3, 1947, No. 14677. [Class 94 (i)] A cob for assembling buckles in stack formation e.g. for insertion into a magazine of a machine, consists in an elongated member having at least one divided end portion which resiliently maintains a frictional resistance to gravitational movement of buckles over such end portion and which permits movement of the buckles over such end portion on application of sufficient force to overcome the resiliently maintained frictional resistance. As shown, a resilient material strip is folded lengthwise upon itself to form an elongated intermediate portion 3 having spaced apart fold portions 6, 7 at one end and 8, 9 at the other end. The extreme ends 4 of the portions 6, 7 are in contact and pointed or rounded for easy entry into the buckles. The folds 1, 2 may be of different widths. In a modified construction of cob in which each buckle is held thereon by friction between the cob and the buckle the folds are spaced apart and the free edge of the narrower fold is bent to extend laterally outwardly to bear frictionally against the inner surface of the buckle eye while the other field bears against the opposite inner surface of the eye.
Patent GB-147181-A (GB)
IPC: E03B7/10
Abstract: 147,181. Calinaud, A. March 1, 1918, [Convention date]. Alarms, temperature. - Bursting of pipes, cisterns, water jackets, &c., by freezing water, is prevented by a device comprising a pipe 1 connected to the lowest part of the pipe &c. to be protected, an air jacket 5 surrounding the pipe 1, a valve 2 closing the pipe 1 under the influence of a spring 4 and lever 3, a thickwalled coiled tube 6 closed at the upper end by a plug 7 and at the lower end bv a movable plug 8, and a small pipe 10 connecting the pipe 1 with the tube 6. In operation, water in the pipe 10 first freezes and isolates the tube 6; expansion of the water in the tube 6 then moves the plug 8 which acts through the lever 3 to open the valve 2. The plug 8 may also operate an electrical or mechanical alarm.
Patent GB-145962-A (GB)
Title: Metal fitting for securing handles to round or flat top brushes
IPC: B25G3/36
Filed: 1919-06-11
Abstract: 145,962. Lucas, P. June 11, 1919. Fixing by detachable sockets with lug and flange attachments.-A curved plate E, or a flat plate for a flat-topped brush stock, has downturned flanges K fitting grooves formed in the stock A, and a three-sided socket C in which the stail or handle B is secured by screws J. The flanged plate is fixed by a thumb-screw F and a nut G fixed by nails H to the underside of the stock.
Patent GB-312354-A (GB)
Title: Wireless signalling system
IPC: H03J3/06
Filed: 1929-05-10
Abstract: 312,354. Hazeltine Corporation, (Assignees of MacDonald, W. A.). May 25, 1928, [Convention date]. Thermionic amplifiers.-An a radio receiver employing one or more tuned high-frequency stages, reception is rendered equally effective throughout a band of frequencies by employing in the aerial circuit a coil or coils of such inductance that the aerial circuit resonates at or near the lowest frequency of the band, thus compensating for the tendency of tuned high-frequency amplifiers to be more effective at the higher frequencies. As shown in Fig. 3, the aerial coil 22 is magnetically coupled to the tuned input circuit 4 of the first amplifier 1, and further tuned circuits 5, 6 are provided between the valves 1, 2 and the valves 2, 3, the last of which is a detector valve. Transformer coupling is employed between the valves, and inherent capacities are neutralized in known manner. The coupling between the aerial circuit and the tuned circuit 4 is of the order of 15 per cent, and as the aerial circuit reacts as an inductance throughout the wave range, its effect on the tuned circuit 4 is to diminish the effective inductance in that circuit. The coil 7 is therefore given more turns than the coils 8, 9 to compensate for the aerial effect, with the result that the tuning-condensers 10 - - 12 can be made identical and can be conjointly controlled by mechanical linkage 13. A switch 25 enables a series condenser 23 to be switched in when the set is connected to an aerial of excessive capacity, and a condenser 24 may be connected across the coil when the aerial is very short. The resonance of the aerial is damped by a resistance 27. A capacity coupling 26 may be employed between the high potential ends of the coils 22, 7, and may be arranged to enhance or to reduce the effect of the magnetic coupling. The magnetic coupling may be effected by portions only of the aerial inductance 22, and the tuned circuit inductance 7, the remaining portions being uncoupled.