baber/WOPTO huggingface dataset:
Patent GB-286468-A (GB)
Title: Improvements in or relating to alternating current measuring instruments
Filed: 1927-03-17
Abstract: 286,468. Sandison, A. G. S., and Electroflo Meters Co., Ltd. March 17, 1927. Resistances, measuring; electromagnetic current meters.-An alternating-current instrument for measuring the resistance of a circuit, or the current flowing in a constant-pressure circuit, comprises an electromagnet 7 excited by a winding 6 connected in series with a resistance 8 across an alternating-current source 5, and a coil 1 movable in the field of the magnet 7 and connected, in series with a choking-coil 2, across a non-inductive shunt 3 in the circuit of which the resistance is to be measured. The current in the coil 1 lags with respect to the current in the coil 3, which is approximately in phase with the pressure of the source 5. The current in the winding 6, and consequently the flux of the magnet 7, lags with respect to the pressure, and may be adjusted by means of resistances 8, 11 into phase coincidence with the current in the coil 1. An electromotive force is induced in the coil 1 by the magnet 7 and causes a current to flow which is largely in phase with the flux of the magnet 7, and exerts a controlling force tending to restore the coil 1 to its symmetrical position. In parallel with the moving coil 1 is connected the secondary winding 12 of a transformer 10, the primary winding of which is connected, in series with a variable resistance 11, across the resistance 8 in the exciting coil circuit. A constant current opposite in sign to the deflecting current is thereby caused to flow in the coil 1, causing .the zero to be set back from the symmetrical position and permitting an extended scale to be used. Zero adjustment is effected by variation of the resistance 11, and adjustment of the controlling force is effected by varying the inductance of the secondary winding 12. The instrument is stated to be unaffected by variations of pressure or frequency, and very little by changes of temperature. The invention is particularly applicable to a circuit containing a resistance 4 which is varied by a quantity such as fluid flow. According to the Provisional Specification, a slight spring or gravity control may be provided to effect zeroization when the electric supply is disconnected.
Patent GB-263732-A (GB)
IPC: F25J3/06
Filed: 1926-03-17
Abstract: 263,732. Soc. L'Air Liquide, Soc. Anon. pour l'Etude et l'Exploitation des ProcÚdÚs G. Claude. Dec. 24, 1925, [Convention date]. Separating gases by liquefaction. - In the separation of gas rich in hydrogen from gas mixtures by partial liquefaction of the mixture, the separated hydrogen being expanded to produce a cooling effect, the separated non - liquefied gas, before expansion, and the expanded gas, are circulated in counter current with the same portions of the gaseous mixture. Other gas mixtures may be similarly treated. Methane &c. are condensed out in the lower part M of a separating column, The remaining gases rise through tubes T, in which further condensation takes place, the liquid being collected in a vessel D and passed up through a valved tube U into a receiver A from which liquid flows down around.. the tubes. The purified gas rising in the tubes- T flows back through the tubes' t and compartment F to an expansion device S, whence it passes out around the upper parts of the tubes. The hydrogen may be reheated between the compartment F and the expander by passage through a liquefier fed by the gases from the temperature exchanger before they enter the separating column. A tube K removes liquid from the gascollector G at the upper ends of the tubes, delivering it either to the vessel D or through an outlet orifice of small diameter. In a modification, for treating water gas, the lower set of tubes are omitted and the gas enters around the vessel F which is at the bottom of the column ;. the hydrogen passing from the outlet cools the gas in a temperature exchanger. Alternatively it may liquefy nitrogen, which is then allowed to evaporate in a compartment around the top of the tubular system or may be delivered to a rectification column to wash the compressed hydrogen issuing from the top of the tubes T. If the gas passing to the expander should be deficient in nitrogen for lubrication, compressed nitrogen cooled for example by ethylene and methane condensed from coke oven gases may be supplied. -.
Patent GB-505302-A (GB)
Title: An apparatus for detecting, indicating or recording the presence of inflammable gas
IPC: G01N27/16
Filed: 1938-03-10
Abstract: 505,302. Gas detectors. WALTON, W. H. March 10, 1938, No. 7435. [Class 1 (i)] An inflammable-gas detector comprises an indicating circuit containing a resistance composed of a substance, such as copper oxide or boron, which increases in conductivity on being heated, said resistance being placed adjacent to an electrically heated catalytic filament of known type arranged in a separate ciucuit.
Patent GB-313038-A (GB)
Title: Centrifugal friction clutch
IPC: F16D43/24
Filed: 1929-03-07
Abstract: 313,038. Metallges. Akt.-Ges., (Assignees of Kaisser, K.). June 5, 1928, [Convention date] Driving-arrangements.-In centrifugal friction clutches for facilitating starting of electromotors with short-circuited rotors, the main centrifugal shoes 4, slidable on pins 5 on the driving-hub 1 against retracting-spring 6, are detained by pivoted latches 8, adapted to be released by auxiliary spring-retracted centrifugal weights 11 mounted on a flanged sleeve 10, which, being loose on the hub 1, lags behind and only attains full speed some 3-5 secs. after the hub 1, in order to give time for completing the switching- operations preparatory to taking up full load. The shoes 4 may be faced wholly or, as shown, partially with friction material 7 for contact with the loose pulley 2,
Patent GB-149895-A (GB)
Title: Improvements relating to shoes
IPC: A43B23/28
Filed: 1920-03-13
Abstract: 149,895. Robinson, W. J., and Kernohan, D. March 13, 1920. Heel-friction pads.-An elastic strip d is encased in a covering of velvet a secured in the heel with its under edge left open at the centre. The elastic is secured under tension so as to draw the velvet against the wearer's heel.
Patent GB-760615-A (GB)
Title: Improvements in or relating to hearing aids
IPC: G02C11/06
Filed: 1954-03-16
Abstract: 760,615. Hearing aids. SMITH, A. L. March 16, 1954 [March 20, 1953; Jan. 18, 1954], No. 7596/54. Class 40 (4). [Also in Group XX] A hearing aid receiver is connected to an earplug by an extension of a tubular spectacles frame. The receiver itself may be carried by the frame or may be connected to the frame by a flexible tube. Separate receivers may be carried by the two sidepieces. Alternatively, one receiver may feed both earplugs. In one arrangement, Fig. 1, a tubular front piece F carrying eyeglasses S provides a path for sound to pass from one tubular sidepiece 11 to the other 12. The hinges 35 not only provide channels to conduct the sound, but enclose springs 48, Fig. 4, to urge the sidepieces against the head. Each sidepiece 11 comprises two parts 22, 23 telescopically engaged, the part 23 carrying an ear plug 31 and a widened portion 25. A receiver 26 is mounted on the part 25 either by a snap ring or by adhesive. The diameters of the tubes are arranged so as to give the same sound intensity at both ears. The receiver is connected to the amplifier by a lead 21. In a modification, Fig. 6, the receiver 26 is fixed to the part 23 forward of the ears. In another modification, Fig. 5, the receiver is connected to the frame by a flexible tube 50. In another arrangement, Fig. 7, a tubular frame G is formed of one piece of resilient spring steel or aluminium alloy. The rear portion may be fitted to the arm 112 by a telescopic arrangement, the two sections of which are prevented from coming apart by the engagement of threaded portions 95, 96, Fig. 11. Glasses 114, 115 are carried by a bridge member 118 which is secured to the frame by clamping, welding, brazing or by screws. In a modification, Fig. 9, the eyeglasses are secured to the frame G by means of a hinge 75. In this case, the sound intensities at the two ears are adjusted by means of sound absorbing packing 88, Fig. 10, in ballshaped earplugs 143. The packing is compressed by a screw-threaded retainer 90.
Patent GB-1112259-A (GB)
Title: Spark erosion machines
Inventor: ALABASTER CLIFFORD
IPC: B23H1/00
Filed: 1966-02-22
Abstract: 1,112,259. Spark erosion. AGEMASPARK HOLDINGS Ltd. 13 Feb., 1967 [22 Feb., 1966], No. 7620/66. Heading B3V [Also in Division G3] A spark erosion machine whose electrode 4 is movable horizontally and vertically in accordance with a pattern 12, has a sensing head 1 rigidly attached to the electrode and comprising a housing 9 for a follower 10 adapted to co-operate with the pattern and included in an electrical control circuit for the electrode whereby if the follower is out of contact with the pattern, the electrode and sensing head are moved vertically towards the pattern, and whenever the follower is in contact with the pattern, the electrode and sensing head are moved horizontally unless and until the follower is moved by the pattern relatively to the housing whereupon the electrode and sensing head are moved vertically away from the pattern. The electrode 4 is mounted in a quill 3 provided with slides and lead-screws so as to be moved horizontally and vertically by servomotors 6, 7 controlled by a circuit 8. Follower 10 is pivoted at 13 to the housing 9 and is biased to an axial position by leaf-spring 11. Any pivotal movement of the follower causes coils A or B to be energized thereby energizing servomotor 7 to effect vertical movement. Engagement of the follower with pattern 12, which is of metal or has a metallized surface, energizes coil C which controls servomotor 6 to produce horizontal movement until the contour of the pattern causes pivotal movement of the follower thereby producing vertical movement. The follower may alternatively point upwardly to trace a profile complementary to that of the pattern. A safety contact Z switches off the machine if the coil C fails to energize.
Patent GB-1207999-A (GB)
Title: Lithographic printing
Inventor: SCHMIDLIN RAYMOND JOSEPH
IPC: B41L39/00
Filed: 1967-10-20
Abstract: 1,207,999. Rotary lithographic printing machine. ADDRESSOGRAPH-MULTIGRAPH CORP. 20 Oct., 1967 [20 Oct., 1966], No. 7620/70. Divided out of 1,207,998. Heading B6C. The specification is substantially identical to Specification 1,207,998, but the claims are directed to the means for feeding the masters and the copy sheets to the plate and impression cylinders, respectively.
Patent GB-906288-A (GB)
Title: Improvements in or relating to electric circuit testing apparatus
IPC: H04M3/28
Filed: 1961-03-02
Abstract: 906,288. Power gain and loss; frequency measurement. SIEGLER CORPORATION. March 2, 1961 [March 7, 1960], No. 7629/61. Class 37. In an apparatus for measuring the power gain or loss of an electric network such as a telephone communication system as a function of frequency there is included an oscillator 14 (Fig. 1) whose frequency is repetitively swept by a sweep and marker generator 12 and whose output is coupled to the input of the network 66 under test; a means, which may be a cathode-ray oscilloscope 30, for generating a two co-ordinate trace in response to first and second deflection signal inputs, the first signal input being operated in response to the said frequency sweep generator to indicate frequency changes in the oscillator; a reference channel 46 including an amplitude detector 52 and whose input is connected to the output of the oscillator; a comparison channel 48 including an amplitude detector 76, and to whose input either the output from the oscillator or the output from the test network 66 may be selectively coupled; a switching means 58 for alternately connecting the outputs of the reference channel and the comparison channel directly to the second deflection input of the trace generating means; and a calibrated attenuator 72 connected in one of the channels for controlling the output voltage of the detector in that channel. The system described also includes a network 37 between the oscillator (which sweeps between 0 and 4000 c/s.) and the test network which will provide both high and low impedance outputs, and the reference and comparison channels each include low pass filters 50 and 78, arranged to pass D.C. signals ; the calibrated attenuator 72 is included in the comparison channel. The switching means comprises a chopper 60 actuated at 60 c/s. so that the traces 100, 102 from the reference and calibration channels appear simultaneously on the CRT screen. Marker pulses 101 are also provided on the screen to indicate each 1000 c/s. increase in frequency. In use the switch 49 is set to the calibrate position and the attenuator 72 adjusted until the two traces on the CRT screen coincide. The test network is then brought into circuit by altering switch 49, and the attenuator is adjusted until the comparison trace lies on the reference trace at a particular frequency. The gain or loss at that frequency may then be read from the attenuator dial.
Patent GB-569385-A (GB)
Title: Improvements in or relating to methods of preparing leather and to leather prepared thereby
IPC: C14C3/28
Filed: 1943-05-13
Abstract: 569,385. Making leather. AMERICAN CYANAMID CO. May 13, 1943, No. 7654. Convention date, July 25, 1942. [Class 76] Hides and skins are tanned by impregnation with an aqueous solution or dispersion of a water-soluble methylol melamine and with another tanning agent which may be a vegetable or metal salt tanning agent or formaldehyde. Preferably, the methylol melamine treatment precedes that with the known tanning agent. In examples : (1) pickled calf skins are drummed with salt solution, then with a solution of trimethylol melamine added in stages, the pH adjusted to 3.5 by sulphuric acid, and tanning completed with basic chromic sulphate, or with a chromic acid liquor followed by treatment with thiosulphate ; (2) a pickled goatskin or calfskin aftor drumming in salt solution was drummed with trimethylol melamine, the pH adjusted to 3.8, and tanning completed with a basic solution of aluminium sulphate. The pH was adjusted to 6 by soda ash and disodium phosphate, and the skin drained, washed and fat liquored with a sulphonated vegetable oil; (3) a bated or bated and pickled skin was drummed with salt solution and then with trimethylol inelamine and its pH adjusted to about 4. Tanning was completed with sulphited quabracho added in stages ; (4) a pickled skin was drummed with salt solution, then with trimethylol melamine, and tanning completed with a solution of ferric sulphate containing sodium citrate, the pH being brought to 4.1 by adding sodium bicarbonate ; (5) pickled sheepskins were treated with trimethylol melamine in stages, and tanning completed with formaldehyde, borax being added towards the end. The tanned product was fat liquored with a sulphated sperm coconut oil mixture, with interim additions of (a) acetic acid, (b) potash alum, (c) a sulphonated higher alcohol. Methylol melamine for use in the process may be prepared by boiling 1 mol. melamine with 3.5 mols. aqueous 30 per cent formaldehyde at pH 9.0 for 20 mins., cooling, and separating and drying the crystals obtained.
Patent GB-492279-A (GB)
Title: Improvements in or relating to electric cables
IPC: H01B11/18
Filed: 1937-03-16
Abstract: 492,279. Cables. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and ROBINSON, F. E. March 16, 1937, No. 7683. [Class 36] A flexible cable having air-space insulation comprises a conductor 3 centred within a braided or other flexible outer conductor or screen 2 by a winding 1 of insulating-material, such as the material known under the Registered Trade Mark " Trolitul," the ends of the cable being closed by insulating plugs 4 inserted within the outer conductor or screen to abut against the insulating winding and having central apertures 5 through which the conductor 3 projects. The external diameter of the insulating winding, which is preferably formed as a multiple start winding, is substantially the same as the internal diameter of the outer conductor or screen. The ends of the outer conductor or screen may be secured to the plugs 4 by wire bindings 6 and solder 7. In making the cable the insulating-material is wound on a wire core and the outer conductor or screen is then drawn over the winding and core, after which the central conductor is attached to one end of the core and drawn into the insulating winding by withdrawing the wire core. The plugs 4 are then inserted and bound in position.
Patent GB-435037-A (GB)
Title: Improvements in or relating to bobbin drag devices for spinning, twisting and like machines
IPC: D01H7/16
Filed: 1934-03-10
Abstract: 435,037. Bobbin-drag arrangements for spinning &c. machines. BRODIE, D. L., 24, Perganahs, Titaghur, Bengal, British India. March 10, 1934, No. 7693. [Classes 120 (ii) and 120 (iii)] In flyer spinning, twisting, doubling, and like machines, levers 8, 9, rotating with the bobbin and adapted to engage a surrounding fixed braking-surface 14 under the action of centrifugal force, are provided with weights constituted, as shown by balls 16 which, owing to inertia, press the levers more firmly against the brake as the speed of the bobbin increases. The levers and weights may respectively be coupled by links to ensure uniform application of the brakes. As shown in Fig. 6, the levers are housed in a slotted casing 33 carrying the bobbins, and the balls are free to move in the area defined by the inner ends of the levers and inturned parts 40, 41 of a surrounding wall of the casing. As shown in Fig. 1, the levers are pivoted on pins 6, 7 on a disc 1 provided with a central neck to which is screwed a disc 5 carrying the bobbins. Inverted conical pins 24 are provided on the disc 5 or casing 33 and engage cylindrical holes in the bobbin drilled in a direction parallel to the cone of the pins.
Patent GB-883080-A (GB)
Title: Improvements relating to the wrapping of articles
IPC: B65D85/76
Filed: 1960-03-04
Abstract: 883,080. Packages. ALPINA KASC A. G. March 4, 1960 [July 21, 1959], No. 7740/60. Class 94(1). A wrapper is provided with a flap 2 integral therewith and by means of which the wrapper may be torn open, the wrapper comprising a base portion 1, Fig. 2, which covers the base, sides and the peripheral part of the top of the wrapped article, and a top portion 6 which covers only the top of the article, the base portion 1 being integrally connected with the flap 2. The portion 1 is folded about lines 3 and the container so-formed is filled with soft cheese. The portion 6 is applied and edges 7, 8, 9 of the portion 1 are turned down. In a modification (not shown) the portion 1 is provided with two opposite flaps 2.
Patent GB-110318-A (GB)
Title: Improvements in the Manufacture, or Treatment, of Parchmentized, or Vulcanized, Fibre and in New Products therefrom.
Inventor: JOHNSON JAMES YATE
IPC: C08L1/06
Filed: 1916-12-11
Abstract: 110,318. Johgason, J. Y., (Diamond State Fibre Co.). Dec. 11, 1916. Parchment paper; boards and compound paper. -Relates to the manufacture of vulcanized or parchrnentized fibre or vegetable parchment and consist in treating the fibre whilst it still contains the vulcanizing or parchmentizing fluid with a liquid that will displace the vulcanizing &c. fluid and then with matter which ie soluble in this liquid and capable of rendering the fibre more waterproof or flexible. Alcohols, acetone, and ether are mentioned as substances capable of displacing the vulcanizing &c. fluid and the fibre may be immersed in a succession of baths of such substances or mixtures thereof. Oils, fatty acids, rubber, gums, resins, nitre-cellulose solutions, and phenol formaldehyde condensation products, such as Bakelite or Condensite, are mentioned as substancse suitable for rendering the fibre more waterproof &c., and in which the fibre is immersed after treatment with the alcohol &c. In cases in which the waterproofing &c. body is not soluble in alcohol, the alcohol in the fibre may be replaced by a solvent for the waterproofing-body which solvent is then replaced by the waterproofing-body. When a phenol formaldehyde condensation product is used, the treated fibre may be subsequently heated to cause the solidification of the condensation product. Drying oils or vulcanizable substances when introduced into the fibre may be subsequently treated to modify their nature. A number of sheets treated with a condensation product may be united by heating under pressure to solidify the condensation product.
Patent GB-1476867-A (GB)
Title: Low profile sump with submerged transverse roll crusher
IPC: E21F13/00
Filed: 1975-02-25
Abstract: 1476867 Roller mills, wet grinding CONTINENTAL OIL CO 25 Feb 1975 [22 April 1974] 7824/75 Heading B2A A wet grinding roller mill comprises a tank with a sloping base 16 and horizontal dimensions less than its vertical dimensions and thus having a shallow end and a deep end, means 20 to feed water and means 64 to feed solids adjacent the shallow end and a slurry outlet 40 adjacent the deep end means viz. baffles 17 to limit flow of water in the upper portion of the tank, toothed rollers 35, 36 journalled adjacent the slurry outlet to move the fed solids into the slurry outlet, and means 32 to maintain the water level in the tank. As described, the discharge is facilitated by a pump (not shown). The rollers 35, 36 may be driven by independent motors 44, 54, Fig. 1 or by a chain/gear drive with teeth on the rollers intermeshing.
Patent GB-1090114-A (GB)
Title: Treatment of oils
Inventor: HEPBURN JOHN JAMES
IPC: C11B3/06
Filed: 1964-02-25
Abstract: Free fatty acid in fatty oils (including molten fats) is neutralized with a liquid, oil-immiscible treating agent by a process in which the oil is continuously supplied to form a film on a moving carrier surface, each point on which follows a closed path, and said film is then carried without disruption or substantial movement relative to said surface through a body of the liquid treating agent, and is continuously removed from the surface.  The treated oil after removal from the carrier surface may be fed to a pool of treated oil partly covering the body of treating liquid, the treated oil being continuously removed from pool.  Two types of carrier surface are described, namely a rotating drum and a rotating disc, both of which rotate about horizontal axes and dip into a bath of treating liquid. Unrefined oil is fed to a descending surface of the carrier, in the case of the disc to both side thereof.  Apparatuses embodying both types of carrier surface are described in detail.  The process is particularly suitable for the alkali refining of glyceride oils, the treating agent being aqueous caustic soda, suitable of normality 0.1-0.8 N, which may contain minor amounts of soap or other melting agent, e.g. dodecyl benzene sulphonate, and an electrolyte, e.g. NaCl.  When the unrefined glyceride oil has a high free fatty acid content the moving surface may be made lipophilic, e.g. by treatment with aluminium stearate.  Unrefined oils treated in examples are palm kernel oil, coconut oil, groundnut oil, soya bean oil, rapeseed oil, and cottonseed oil.
Patent GB-439869-A (GB)
Title: Improvements in and relating to pneumatic tyres
IPC: B60C5/00
Filed: 1934-03-12
Abstract: 439,869. Pneumatic tyres. LACOMBLEZ, A., 23, Rue Breydel, Brussels. March 12, 1934, No. 7843. Void [Abridged as open to inspection under Sect. 91 of the Acts, Sept. 12, 1934]. [Classes 144 (i) and 144 (ii)] Air-tubes are coated, or lined, with a layer of spongy rubber or other gelatinous substance which may be arranged at the tread portion only, or extend completely around the tube. In the form shown in Fig. 1, the spongy rubber 3 is fitted in a rubber pocket 6 at the tread portion. In case of puncture as by a nail 5, the hole may be closed by injecting spongy rub ber or solution, or both, by means of a syringe 12, Fig. 5 which is preferably fitted with a removable nozzle 11.