baber/WOPTO huggingface dataset:
Patent GB-808504-A (GB)
Title: Improvements relating to fastening devices
Inventor: WILSON ARCHIBALD HAMMOND
IPC: E05C19/06
Filed: 1955-09-17
Abstract: 808,504. Releasable fastenings: wood screws. EVERED & CO. Ltd. Sept. 17, 1956 [Sept. 17, 1955], No. 26665/55. Classes 44 and 89(2) A fastening device comprises separable components which are adapted to be attached to respective members required to be retained in a position of assembly or closure, one of the components 10 being a female component having a sleeve portion 12 made of elastically deformable natural or synthetic resin and the bore 15 of which sleeve portion converges slightly in a direction axially from its forward end, and the other component being a male component 20 having a portion 23 of greater rigidity than the sleeve portion, the two portions having dimensions such as to engage each other with an interference fit providing resistance which slightly increases and decreases as the male portion moves along the sleeve portion inwardly and outwardly thereof respectively, and includes an air venting arrangement to permit egress and ingress of air from and to the rear of the sleeve portion in an unrestricted manner during inward and outward movement respectively of the male portion relative to the sleeve portion. As shown, the rear end of the sleeve is closed and the square cross-sectional shape of the bore 15 provides four air venting channels round the spherically shaped male portion 23. Alternatively, the bore 15 may be circular and an air venting hole provided in the end wall of the sleeve, or the rear end of the latter may be open and the bore or the male component provided with grooves or channels. The female component 10 is formed as a one-piece moulding and the male component 20 which may be of metal, is adapted to be screwed into one of the two parts to be fastened together. Alternatively the male component may be moulded from a synthetic resin which sets to a relatively rigid form in which case the screw thread is replaced by a plate portion.
Patent GB-1427257-A (GB)
Title: Operating circuit for a brushless electric motor
IPC: H02P6/06
Filed: 1973-06-05
Abstract: 1427257 Automatic speed control SUWA SEIKOSHA KK and SHINSHU SEIKI KK 5 June 1973 [22 June 1972] 26700/73 Heading G3R [Also in Division H2] A system for automatically controlling the speed of a brushless motor having stator field windings 34, 35, the currents in which are determined by transistors 32, 33 under the control of a Hall effect device 31 responsive to the magnetic flux generated by the field windings, is provided with diodes 36, 37 which generate a signal representing the actual motor speed, the signal, smoothed by a capacitor 45, having applied by way of a noninductive coupling to the emitter of a transistor 39 to the base of which is applied a constant bias voltage developed by means of a Zener diode 40 and a potential divider having resistors 42,43, the transistor 39 providing control of the current fed to the control element of the Hall effect device 31 and hence to control the currents in the field windings 34, 35. The desired motor speed is settable by the variable resistor 42 and a thermistor 44 provides temperature compensation for the system. In a further embodiment the actual speed dependent signal is developed by way of a pair of coils in series with a pair of diodes respectively and the signal used to control the transistors in the field winding circuits.
Patent GB-440508-A (GB)
Title: Improvements in or relating to the application of protective coatings to pipes
IPC: C04B28/10
Filed: 1934-09-17
Abstract: 440,508. Preventing corrosion. LLOYD, H. G., 47, The Avenue, Surbiton, Surrey. Sept. 17, 1934, No. 26719. [Class 123 (i)] Pipes are protected from corrosion by a deposit of calcium carbonate on the surface. The pipe surface is covered with water, and aqueous solutions of lime and a precipitating substance such as carbon dioxide or calcium bicarbonate added. Alternatively, gaseous carbon dioxide may be used. The method may be applied to pipes containing water in flow, preferably turbulent, to which are added simultaneously a solution of lime, and a solution of calcium bicarbonate obtained from whiting and carbon dioxide. The bicarbonate may be obtained by admitting carbon dioxide to a closed tank containing water and whiting.
Patent GB-834261-A (GB)
Title: Improvements in or relating to siloxane elastomers
Inventor: FEKETE FRANK
IPC: C08L83/04
Filed: 1956-09-03
Abstract: A composition convertible to an elastomer comprises a polysiloxane gum containing Sibonded saturated and olefinically-unsaturated hydrocarbon radicals, a certain alkoxy-organopolysiloxane oil and an inorganic filler.  The siloxane oil is a siloxane containing a major proportion of R2SiO units in which each R is a hydrocarbon radical and a minor proportion of siloxane units containing alkoxy radicals, two alkoxy radicals being attached to the terminal Si atoms in the case of an alkoxy-terminated siloxane.  These siloxanes are disclosed and claimed in Specification 792,470.  The oil is preferably used in amount by weight of 8 to 40 parts per 100 parts of gum.  Preferably the gum contains radicals selected from methyl, ethyl, phenyl, vinyl, allyl and cyclohexenyl, and the oil contains alkoxy radicals selected from methoxy, ethoxy, propoxy and butoxy.  Reinforcing silica fillers are preferred, but other fillers, e.g. titania, alumina, iron oxide, diatomceous earth, CaCO3, ZnO, quartz, zirconium and aluminium silicates, lithopone and alkoxymodified silica, may be used alone or in conjunction with the reinforcing silicas, and are preferably used in amount to provide 0.1 to 1.0 part (by weight) of siloxane oil per part of reinforcing filler.  When the silica fillers are highly acidic, buffers such as Ca and Ba zirconates may be added. Curing agents specified are: di-t-butyl-, t-butyltriethyl-methyl-, t-butyl-t-triptyl-, di-cumyl-, benzoyl-, 1 : 4-di-chlorobenzoyl-, 2 : 4 - dichlorobenzoyl - and mono - chlorobenzoyl - peroxides and t - butyl perbenzoate.  The compositions (free of curing agent) may be precured at 250 DEG  to 300 DEG  F. to remove volatiles.  In a typical example a siloxane gum composed of dimethyl- and ethylvinyl-siloxane units was mixed with finely-divided silica and an ethoxy-terminated dimethyl-siloxane oil and bin-aged, and then compounded with di-t-butylperoxide, cured in a mould at 340 DEG  F. and post-cured at 480 DEG  F.  Uses.-For wire and cable insulation, vibration damping mounts, gaskets, seals and coatings.
Patent GB-1102768-A (GB)
Title: Improvements in or relating to the determination of time intervals
IPC: H03M1/00
Filed: 1965-06-24
Abstract: 1,102,768. Selective signalling. W. K. ROSENBERRY, [trading as ABLE RESEARCH LAB.]. 24 June, 1965 [25 June, 1964], No. 26832/65. Heading G4H. A system for determining the time between two pulses # t  and # p , Fig. 1, of type in which complete cycles of a first wave S 1 (t) (e.g. 10 Mc/s.) are counted until the second pulse # p  occurs-to give a coarse count-and then complete cycles of a second wave S 2 (t) (e.g. 10À1 Mc/s.) are counted until one of its positive-going zero cross-overs coincides with one on wave S 1 (t) at a time # c -to give a fine vernier countis characterized in that each cycle of the S 1  wave is not actually counted until about half a wavelength later and in that means are provided which takes notice of the fine count attained at time # c  to determine whether a further one should be added to the coarse count, this being necessary if the second pulse # p  occurs near the middle of a cycle of wave S 1  and prematurely terminates the coarse count before the immediately preceding complete cycle of wave S 1  has actually been counted. This modified method eliminates the error of  1 which may arise when the basic method is used if the second pulse # p  occurs near a postive-going zero crossover of wave S 1 . The modified method is implemented as follows. The wave S 1  is delayed by 0À4# 1 , (where # 1  is its periodic time), to give a wave S 1 <SP>11</SP>, which is inverted to give a wave S 1 <SP>1</SP>. A trigger is turned on at the positivegoing zero cross-overs of wave S 1 <SP>1</SP> and turned off by the positive-going zero cross-overs of wave S 1 <SP>11</SP>. This results in wave S 3  but because of circuit tolerances both the set time # s  and the reset time # r  of each pulse are assumed to have tolerances of 0À1 # 1  (i.e. 0.8 # 1 # # s  # 1À0 # 1  and 0À3# 1  # # r  # 0À5 # 1 ). Unity is counted by the coarse counter every time the trigger is reset, i.e. at time # r . These counting pulses are shown at S 4 . Thus the first cycle of S 1  is not counted until somewhere near the middle of the next cycle, and so on. Further when the second pulse # p  occurs it can be decided whether the immediately preceding cycle of S 1  has been counted from the state of the trigger, which will be in its set state if the preceding cycle has not been counted. Hence, if after the second pulse # p  arrives and coarse counting stops, the trigger is still set then an additional one should be counted. However, if the second pulse # p  occurs very late in a cycle, say, for example, # p = 0À9 # 1 , the trigger may be in its set state not because the preceding cycle has not been counted, but because it is preparing itself to cause the counting of the current cycle (i.e. the cycle in which # p  has occurred). Hence, if the trigger is set at time # p  the additional count of one should only be made providing # p  is not too near the end of a cycle, and with the assumed tolerances this means # p  # 0À8 # 1  which can be decided from the fine count. A block diagram is described.
Patent GB-476731-A (GB)
Title: Improvements in cleaning devices for battery type poultry laying cages
IPC: A01K31/04
Filed: 1936-06-16
Abstract: 476,731. Cleaning battery cages. MUDD, J. June 16, 1936, No. 26908/37. Divided out of 476,443. [Class 5 (ii)] A scraper for removing the droppings from the floors below the cages of battery laying- cages comprises a tray M having a separate front edge M<1> formed with a series of resilient inclined fingers m<4> adapted to press on the channel-shaped metal floors G of the cages. In some cases, the edge M<1> is formed as a number of sections attached individually to the tray. The tray has anti-friction rollers m<2>, m<3> for engaging flanges and sides of the floors. A container N for sawdust carried by the tray is adapted to be moved to the right over a fixed plate N<1> normally covering an aperture in the lower part of the container. The plate N' is held normally in the position shown by a hinged stop n<2>. Brushes O are provided for cleaning the longitudinal corners of the floor G. In use, the tray is drawn from end to end of a floor by an endless wire or rope P to remove the droppings and to apply sawdust. Specification 446,019 is referred to.
Patent GB-845225-A (GB)
Title: Improvements in or relating to wire-handling machines
Inventor: TRAVIS WILLIAM
IPC: B21C47/14
Filed: 1957-08-27
Abstract: 845,225. Winding and reeling; drawing wire. CONNOLLY'S (BLACKLEY) Ltd. Nov. 24, 1958 [Aug. 27, 1957], No. 26987/57. Class 83 (4). In a wire coiling machine, the wire 32 is drawn through a central passage 35 and a transverse aperture 61 in a vertically mounted rotatable shaft 1 by a flier 33 which winds the wire on a drum 8 rotatably attached to the lower end of the shaft 1 and held against rotation by magnetic means 18, 25 arranged to allow movement of wire coils from the drum 8 to a receiver underneath the block. As applied to a wire drawing machine, the drawing die 40 is secured at the top of the shaft 1 and is fed from a pipe 45 with lubricating liquid that discharges centrifugally into a container 44. The wire 32 guided by pulleys 34, 37 is wound by a pulley 33 on a disc 36 secured to the shaft 1 about the tapered drum 8, and the coils move down over a skirt 17 attached to the drum. A soft iron bar 18 co-operates with electro or permanent magnets 25 to prevent rotation of the drum. Alternatively permanent or electromagnets in the drum 8 may co-operate with external magnets or electromagnets. The skirt 17 and drum 8 may be of magnetic or other material and may be gapped or thinned to prevent leakage of magnetic flux. In a modification, the drawing die is omitted and the wire is annealed before being handled by the machine.
Patent GB-191181-A (GB)
Title: Improvements in and relating to pistons for internal combustion engines
IPC: F16J1/08
Filed: 1921-10-12
Abstract: 191,181. Holworthy, H. F. Oct. 12, 1921. Pistons.-The piston of an internal-combustion engine is formed both with an internal lip 2 in which oil collects and with a scraper groove 7. The oil passes from the lip 2 through perforations 5 to the exterior of the piston, preferably at a portion of reduced diameter, and oil collected by the scraper groove 7 is returned by perforations 8 to the interior of the piston. The perforations 5, 8 are preferably inclined. The scraper groove 7 is preferably just below the packing rings and the lip 2 near the extremity of the skirt. Oil-distributing grooves 9 may be formed on the skirt.
Patent GB-705620-A (GB)
Title: Improvements in boxes for packaging
IPC: B65D85/76
Filed: 1951-11-21
Abstract: 705,620. Boxes; packages. ZACH, E. Nov. 21, 1951 [Nov. 25, 1950], No. 27268/51. Classes 18 and 94 (1) A box for segmental packets of cheese &c. 1 is of rhomboidal form, modified in that two sides 9 are curved to match the curved sides of the packets.
Patent GB-519318-A (GB)
Title: Improvements in or relating to circuit arrangements for starting and feeding electric discharge tubes
IPC: H05B41/04
Filed: 1938-09-19
Abstract: 519,318. Discharge lamps. SOC. ANON. POUR LES APPLICATIONS DE L'ELECTRICITE ET DES GAZ RARES ETABLISSEMENTS CLAUDE-PAZ & SILVA. Sept. 19, 1938, No. 27295. Convention date, Aug. 9. [Class 39 (i)] [Also in Group XXXV] A circuit arrangement for starting and feeding an electric discharge tube by means of an alternating current supply comprises two reactance coils 2, 3 in series with a condenser 4 across the terminals 6 of the supply, and with the tube 1 connected across the terminals of the assembly formed by one of the coils and the condenser, and a switch 5 for connecting the two coils in parallel as soon as the tube has been started. The tube is started by the opening of the switch 5, which may be a push button, or may form part of the main supply switch, or may be opened by a relay actuated by the feedcurrent in the tube. The coils 2, 3 may be coupled, so that the reactances of the coils may be of values suitable both to starting and maintaining the discharge.
Patent GB-1308409-A (GB)
Title: Process for flameproofing cellulose-containing fibre material
IPC: C09K21/14
Filed: 1971-06-10
Abstract: 1308409 Flameproofing CIBA-GEIGY AG 10 June 1971 [11 June 1970] 27369/71 Heading D1P [Also in Division C3] Cellulosic fibre materials e.g. cotton, linen, rayon, viscose or mixtures thereof with wool, polyamide or polyester fibres, are flameproofed by applying thereto an aqueous preparation containing the reaction product obtained by condensing wherein R 1  and R 2  are alkyl, halogenoalkyl or alkenyl of 1 to 4C with itself in an anhydrous solvent medium toluene, benzene or xylene, at 70-180C until 0.1 to 1 mol of water has separated per mol of N-methylol compound, drying below 100C and curing above 100C. The aqueous preparation may contain (i) aminoplast precondensates e.g. butyl melamine, N-trihalogenomethyl melamine, ammeline, benzoguanamine, acetoguanamine, diguanamine, alkyl or aryl urea or thiourea, alkylene urea or 4, 5-dihydroxyimidazolidone-2 substituted by the radical -CH 2  . CH 2  . CO. NH-CH 2 OH in the 4 position condensation products with formaldehyde or ethers thereof (ii) copolymers of alkaline earth metal salts of alpha-beta ethylenically unsaturated carboxylic acids, N-methylol amide or N-methylolamide ethers of alpha-beta ethylenically unsaturated mono- or di-carboxylic acids, and a copolymerisable monomer, (iii) a softening dressing e.g. aqueous polyethylene emulsion or ethylene copolymer emulsion (iv) latent acid catalysts e.g. ammonium dihydrogen phosphate, MgCl 2 , Zn(NO 3 ) 2  and NH 4 Cl (v) p.H control agents e.g. HCl, PCl 3  &c and (vi) organic solvents e.g. alkanols. The compound of formula I may be prepared by reacting an appropriate phosphorus compound with paraformaldehyde.
Patent GB-411015-A (GB)
Title: Automatic feed control for fluid fuel in heating appliances
IPC: F24H9/20
Filed: 1933-10-04
Abstract: 411,015. Thermally-actuated valves. CASE, W. G., 66, The Ridgeway, Kenton, Middlesex.-(Assignee of Compagnie Nationale des Radiateurs ; 149, Boulevard Haussmann, Paris.) Oct. 4, 1933, No. 27374. Convention date, Oct. 25, 1932. [Class 135.] Relates to an automatic control for the supply of fluid fuel to a heating installation of the kind comprising two independent valves 9, 11, of which one, 9, is controlled by a thermal device 1 in the heater and the other, 11, by a thermal device 31 operated by the heat of the pilot jet. According to the invention, the valve 9 is of metal, to give exact regulation of the temperature at which the minimum feed occurs ; while the valve 11 is of leather to ensure a tight closure when the apparatus is not working. As shown, the valve 11 is urged towards the open position by a spring 16, but is kept closed when the apparatus is not in operation by levers 12, 13 urged downward by springs 14, 15. To start the apparatus, the gas is turned on, and flows through the inlet 19 and nipple 18 to the pilot-jet. The handle 26 is then raised to force the spring 14 out of action, and the thermal device 31 permited to raise the lever 13 against the spring 15, thus opening the valve 11. The valve 9 is open when the apparatus is cold. As the liquid heats up, the thermal bellows 2 rocks a lever 6 about its pivot 6<a>, and permits a lever 7 to be rotated anticlockwise about its pivot 6c by the stem 8 of the valve 9, which is thus raised towards its closing position by its spring 10 and ultimately closes at a temperature adjustable by moving the pivot 6<a> by an adjusting head 23. The burners are then supplied solely through an adjustable by-pass 22, Fig. 2, leading from the space between the valves 9, 11 to the outlet 20.
Patent GB-1488012-A (GB)
Title: Mass flow transducers
IPC: G01P13/02
Filed: 1975-09-18
Abstract: 1488012 Measuring fluid flow-rate electrically HAWKER SIDDELEY DYNAMICS ENG Ltd 18 Sept 1975 [20 June 1974] 27397/74 Heading GIN The direction of fluid-flow in a pipe 1 Fig. 2 is determined by comparing the temperatures of two bodies 3, 5 located equidistantly from a heated body 4: the rate of flow is determined by comparing the temperatures of the heated body 4 and of the upstream body 3 or 5. The bodies 3, 4, 5 comprise metallic rings on a plastics cylinder 2 supported by a pillar 10. Each ring is associated with a thermistor 6, 7 or 8 respectively, and the centre ring 4 is heated by an element 9. Thermistors 6, 8 form adjacent arms of a bridge network whose imbalance is amplified at 16, Fig. 3, to operate a relay 17 which either closes switch 18 and lights lamp 20, for fluid-flow from left to right, or closes switch 19 and lights lamp 21, for flow in the opposite direction. The appropriate upstream thermistor 6 or 8 is thus connected in a second bridge network with thermistor 7 and their resistance difference produces an imbalance which is amplified at 22, linearized at 24 and shown at 23 as indicative of mass fluid flow-rate. Alternatively the imbalance signal may be used to control the heating current to maintain a constant temperature difference. The rings 3, 4, 5 may alternatively be inside the cylinder 2 or on the surface of the pipe 1.
Patent GB-304168-A (GB)
Title: A process for the manufacture and production of a new material for covering or wrapping perishable goods, and for other purposes
IPC: D06M15/05
Filed: 1927-10-15
Abstract: 304,168. Kilner, A. H. Oct. 15, 1927. Drawings to Specification. wrapping-materials.-A material particularly intended for wrapping or covering perishable goods is made by immersing a cotton or other fabric in a bath of cellulosic solution, withdrawing the fabric and passing it through a fine slit so as to force the solution into the fabric. The slit may be formed in the receptacle containing the solution and located below the level of the solution, and is preferable adjustable. The cellulosic solution may be viscose, and the material after impregnation passed through a bath of dilute sulphuric acid to coagulate the viscose. The finished material is neutral, aermless, tasteless, odourless, gasproof, flexible and tough.
Patent GB-214918-A (GB)
Title: Improvements in method of manufacture of lawn tennis racket frames
IPC: B27M3/22
Filed: 1923-11-01
Abstract: 214,918. Rastetter, W. C. Nov. 1, 1923. Rackets. - The frames of lawn tennis rackets are made by bending to racket shape an assemblage of wide wooden laminae and cutting off the requisite widths to form the frames. The wooden sheets 1 - - 4 are dried, treated with glue, and whilst the glue is viscous are bent to shape and are retained until the glue sets, a wedge-piece 5 and cap sheet 6 being secured in place as the bending operation is completed. The frames are then sawn from the assemblage. In a modification, the wedge-piece 5 terminates at the neck instead of extending down the handle.
Patent GB-763451-A (GB)
Title: Process for the preparation of easily-filtrable magnesia and ammonium sulphate
IPC: C01F5/40
Filed: 1953-10-06
Abstract: Gaseous ammonia and a solution containing magnesium sulphate and ammonium sulphate are simultaneously introduced with continual stirring into a "starting" solution containing the above said compounds so as to maintain a free ammonia concentration of 58 to 120 grams/litre; the so-formed magnesium hydroxide is removed; excess ammonia is expelled; a magnesium ammonium sulphate is precipitated by evaporation and if desired cooling and recycled wholly or in part to the "starting" solution; ammonium sulphate and possibly further quantities of an ammonium magnesium sulphate are precipitated by further evaporation and/or cooling of the mother liquor; and magnesium sulphate is added to the residual liquor to produce a new magnesium sulphate/ammonium sulphate solution for reuse in the process.  The expelled ammonia may be returned to the "starting" solution A more concentrated "carrier" solution of ammonium sulphate and magnesium sulphate (2 to 20 preferably 5 to 10 times the weight of the liquor) may be added to the liquor remaining after expulsion of ammonia and crystallization of the double salt, the mixed liquor evaporated and/or cooled to precipitate ammonium magnesium sulphate, and the residual liquor after addition of magnesium sulphate recycled to the starting solution.  The Specification gives details of preferred quantities, proportions and concentrations of the reacting substances and temperatures of 60 and 70 DEG C. are specified. Examples are given.  It is preferred in order to obtain the best yield to stir the magnesium hydroxide precipitate whilst still in contact with the "starting" solution for an hour.