baber/WOPTO huggingface dataset:
Patent GB-1367191-A (GB)
Title: Multisound reproducing apparatus
IPC: H04S3/02
Filed: 1972-04-13
Abstract: 1367191 Stereophonic systems SONY CORP 13 April 1972 [13 April 1971] 17139/72 Heading H4R Stereophonic reproducing system feeds conventional L and R channel signals through phase-shifting circuits 61, 62 to be reproduced by respective speakers 1, 2, mounted left and right front of a listening area, while deriving a filtered signal La, Ra, from each channel and combining it with a phase shifted signal Rf, Lf from the other channel to feed further speakers 3, 4, mounted left and right rear of the listening area. The filters 83, 84, preferably are low-pass filters and the phase relation of the combined signals fed to the rear speakers is such that similar signals in the two channels cancel at about 700 Hz. In a preferred arrangement, Figs. 6 and 7 (not shown), the circuit includes switching and additional phase shift circuits to allow selectively dematrixing of matrixed quadraphonic signals or reproduction of conventional stereophonic signals on four loud-speakers according to the invention. As described with respect to Fig. 1, the L and R stereophonic signals from amplifiers 51 and 52 are fed to phase-shift circuits 61 and 62 which produces a phase shift varying from 0 to 360 degrees over the audio band the resulting signals Lf and Rf are fed via power amplifiers 71 and 72 to be reproduced on front loudspeakers 1 and 2. In addition the L and R signals are fed through low-pass filters 83 and 84 having a phase shift which varies from 0 to 90 degrees over the audio band such that the signals applied to each of the adding networks 93, 94, have been relatively phase shifted by 180 degrees at about 700 Hz. The outputs of the adding networks are fed to loud-speakers 3 and 4, mounted at the rear of a listening area, via power amplifiers 73 and 74. A circuit for the phase-shifters, adding networks, and filters is described with respect to Fig. 7 (not shown) which includes further phase-shift networks for decoding CBS (Registered Trade Mark) matrixed quadrophonic signals.
Patent GB-1263317-A (GB)
Title: Improvements in or relating to saddles
Inventor: LAMKEMEYER KLAUS
IPC: B62J1/26
Filed: 1969-04-02
Abstract: 1,263,317. Cycle saddles. MERTENS & CO. K.G. 2 April, 1969, No. 17188/69. Heading B7E. A cycle saddle comprises a rigid hard foam support 12 having formed thereon a body 15 of soft foam material which at its outer surfaces 15a is of a non-porous nature and merges with the bulk of the body by way of a zone 15b having cavities of a progressively reducing size. The support 12 and body 15 during the manufacturing process are formed integrally together. The support 12 may be formed with reinforcing ridges 16, ribs or beads or have metal reinforcing members incorporated therein. Bolts 22 welded to the support form attachment members between the saddle and a mounting 10, or alternatively securing members 33 formed with apertures 35 may be integral with said support, Fig. 8. Reinforcing discs may surround apertures 35, and the securing members include means for saddle adjustment. The support 12 is moulded in a flat plate-like form or of inverted U-section with the body 15 contacting only the top of the support or completely enveloping it. The body foam may pass through apertures in the support 12 to prevent excess movement therebetween and all surfaces of the body which contact the support be non-porous.
Patent GB-1394480-A (GB)
Title: Method of folding sheets
IPC: B65H45/12
Filed: 1973-04-10
Abstract: 1394480 Folding sheet material OCE-VAN DER GRINTEN NV 10 April 1973 [10 April 1972] 17223/73 Heading B8R Sheets are folded into zigzag form by a mechanism comprising feed rollers 7, Fig. 3, a curved guide 6, rollers 5, a guide element 4 pivotable between positions 3, 3<SP>1</SP>, and reversible folding rollers 1, 2, the rollers 1, 2 and the position of the element 4 being reversed to produce the folds at the required times under the control of an electronic system actuated by signals from detectors FD0-FD4 spaced along the sheet path at predetermined points and sensing the presence or absence of a sheet, the arrangement being such that the finished package has a predetermined length such as 210 mm., with the two free ends of the sheet at opposite sides, the folded portions comprising one or more full length (210 mm.) folds and two or four shorter intermediate folds of a predetermined minimum length. Fig. 2 illustrates a plurality of packages of 210 mm. length, with or without 20 mm. long fastening strips, formed from sheets of the various lengths illustrated according to two different folding systems at the left and right sides of the drawing.
Patent GB-639247-A (GB)
Title: Improvements in photo-electric follower apparatus
IPC: G05B19/12
Filed: 1948-06-28
Abstract: 639,247. Valve circuits. TREWEEK, K. H., and FORREST, R. H. June 28, 1948, No. 17265. [Class 40 (vi)] [Also in Groups XXXVIII and XL (b)] The deflection of a spot on a C.R.T. screen is photo-electrically controlled to follow the boundaries between areas having contrasting light-reflecting or transmitting properties. A unidirectional follower (Provisional drawing) comprises a transparent film 1 carrying an opaque trace 4, traversed between the screen of a C.R.T. 2 and a photo-cell 3 controlling the Y-plate potentials, i.e. deflection of the spot at right angles to the film traverse. The photocell output is amplified by a normal two-stage R.C. coupled amplifier V1, V2 and fed to a "switching-valve" V3 having a 3 kc. squarewave, with an amplitude of 0 to 40 volts from ground, applied to its suppressor, whereby the output is switched to the screen and anode circuits alternately. These signals are fed after some smoothing to a two-phase D.C. amplifier V4 ... V7 providing a cathodefollower output to the Y-plates, which contains just enough of 3 kc. ripple to cause the spot to vibrate slightly on either side of the line, at the same frequency as the switching in V3. Thus the output of the photo-cell as it views the spot above and below the line 4 is switched respectively to each phase of the cathodefollower amplifier. If the spot appears more on one side of the line than the other the output to the Y-plates will have a D.C. component which shifts the mean spot position behind the line. In an alternative arrangement (complete drawing, not shown), the switching valve is replaced by a ring demodulator driven by a 3 kc. oscillator, which also energizes electromagnetic deflector coils to cause the spot to vibrate (instead of 3 kc. ripple on the deflector plates). To cause the spot to outline an.area, a second demodulator and amplifier is arranged to feed the other set of deflector plates, the second demodulator and a second set of deflector coils being fed from the oscillator through a 90 degree phase shift network. The Specification states that the D.C. "shift" potentials may be used to feed calculating apparatus, control the movement of a stylus or cutter, or a remote C.R.T. indicator ; or, alternatively the light from the C.R.T. spot may be focused on to a surface which reflects light on to the photocell, e.g. in a dynamic balancing machine having a dark spot on a bright surface or vice versa. The Provisional Specification states that the C.R.T. may be replaced by a light beam reflected from the mirror of a galvanometer.
Patent GB-854816-A (GB)
Title: Improvements in or relating to electrostatic precipitators
Inventor: RODGER JAMES
IPC: B03C3/41
Filed: 1958-05-30
Abstract: 854,816. Electrostatic precipitation. HOWDEN & CO. Ltd., J. May 28, 1959 [May 30, 1958], No. 17307/58. Class 39(1). An electrostatic precipitator is provided with a shield electrode or grid between the discharge electrodes and counter collecting electrodes in order to control or adjust the operating conditions. The shield or grid may be connected to an adjustable source of potential, or to earth through a variable resistor, or left unconnected, or a potential may be applied to the shield electrode and the discharge electrode left unconnected. In the tubular arrangement shown, the discharge electrode structure consists of two sections 20, 21 each with a discharge electrode 23 provided with points 24 and a surrounding shield electrode 25 provided with apertures opposite the discharge points. The two sections are joined together and spaced by a central insulator 28 and external sleeve 38. Additional insulations may be provided to space the shield electrodes from the discharge electrode. The discharge points in each section are in two groups, the points in each group extending at 90 degrees to each other and the points of the two groups angularly spaced by 45 degrees. Further, one section is turned through 22¢ degrees with respect to the other. The discharge electrodes in the two sections may be connected to separate sources of potential. The precipitation may comprise a circular bank of tubular electrodes cleaned by scavenging gas supplied by rotating hoods top and bottom of the structure, or the electrodes may be cleaned by rapping. The precipitator may be of the parallel-plate type. According to the Provisional Specification the tubular collecting electrodes may be of hexagonal cross-section.
Patent GB-788649-A (GB)
Title: Improvements in magnetic clutches
IPC: F16D27/112
Filed: 1956-06-05
Abstract: 788,649. Electromagnetic clutches. HORNE, R. F. (Warner Electric Brake & Clutch Co.). June 5, 1956, No. 17335/56. Class 80 (2). The winding of a stationary magnet electromagnetic clutch surrounds a cylindrical sleeve within a pair of concentric annular polepieces, a narrow radial air gap being formed between the sleeve and each polepiece, and the polepieces being joined together by non-magnetic material and being flared outwardly to terminate in a pair of axial pole faces larger in diameter than the winding. A non-rotatable support 12 carries a flanged sleeve 30 on which is a winding 13, the sleeve 30 co-operating through radial air gaps 34, 32 with two annular polepieces 27, 25 secured together by a non-magnetic material 29. The polepieces are carried on a shaft 14 journalled in the support 12 and have outwardly flanged portions which terminate in axial pole faces 17, 18 separated by a wear plate 19. The faces 17, 18 form one surface of a friction clutch, the other surface being an armature 11 connected through a ring 20 to the driven member 21 which may have secured thereto a fan. The polepiece 27 is formed with V-belt grooves 36 and acts as the driving member. The flux path is shown by the thick dotted line. In a second embodiment (not shown) the winding is made of thinner radial depth to allow the use of a smaller diameter driving member, and the armature is secured to the driven shaft through blade springs.
Patent GB-545706-A (GB)
Title: Improvements in or relating to battery charging equipment
IPC: H02J7/04
Filed: 1940-12-07
Abstract: 545,706. Charging batteries. STANDARD TELEPHONES & CABLES, Ltd., and RICHARDS, E. A. Dec. 7, 1940, No. 17413. Addition to 516,135. [Class 38 (iv)] Relates to a system for maintaining a battery charged and preventing over-charge by introducing a resistance R1 by means of a thermal relay REL2 which is short-circuited, when the relay REL1 operates on the battery attaining full voltage, thereby re-inserting the resistance R1 for trickle charging as described in the parent Specification. The closure of the contacts REL1 also short-circuits a portion of resistance R2 in series with REL1 thus increasing the current through the relay and ensuring that the voltage must drop substantially before full re-charging is re-commenced as in the parent Specification. According to the present invention, in order to overcome the disadvantage introduced by this short-circuit connection that it renders the adjustment of the two relays interdependent, a rectifier MR, preferably a selenium cell, is inserted in the short-circuit connection to prevent flow of current from the junction of relay REL2 with R2 and the tapping point on the resistance R2.
Patent GB-530028-A (GB)
Title: Method of recovering lithium from minerals
IPC: C22B26/12
Filed: 1939-06-14
Abstract: 530,028. Extracting lithium ; lithium hydroxide ; lithium salts. BOLIDENS GRUVAKTIEBOLAG. June 14, 1939, Nos. 17428, 17429, 17430 and 17431. Convention dates, June 22, 1938, Dec. 6, 1938, Dec. 6, 1938, and Dec. 6, 1938. [Class 1 (iii)] Lithium is extraced from minerals containing it, by lixiviation with aqueous solutions of neutral metal salts. Specified starting minerals are lepidolite, spodumene and petalite, and specified neutral metal salts are those of sodium, potassium and the alkaline earth metals, such as sodium sulphate, nitrate or chloride. The minerals are preferably disintegrated, by heating to 700-1200‹C., prior to lixiviation, and the latter process is generally performed at 100-300‹C., and at super-atmospheric pressure. A better yield is obtained by adding to the lixiviating solution a small quantity of an alkali, such as sodium hydroxide, sodium carbonate or lime. The process is preferably performed in such a manner that entering rich mineral is caused to meet lixiviating liquid which already contains some lithium, while escaping poor mineral meets entering liquid which is free from lithium. When a neutral sulphate is used, the solution containing lithium sulphate may be treated with an alkaline hydroxide, cooled to about 0‹C. to crystallize the alkali meta; sulphate so formed. filtered, and the liquor evaporated to obtain pure lithium. hydroxide.
Patent GB-1310328-A (GB)
Title: Pressure-sensitive adhesives
IPC: C09J7/38
Filed: 1971-05-27
Abstract: 1310328 Adhesive coatings PPG INDUSTRIES Inc 27 May 1971 [18 June 1970] 17434/71 Heading B2E [Also in Divisions B5 and C3]  Pressure-sensitive adhesives having good cohesive strength are obtained by heating a solventless radiation-sensitive composition comprising one or more tacky low molecular weight compounds to a temperature sufficiently above the melting point to maintain it as a hot-melt, applying the hot-melt to a backing and subjecting the composition to ionising radiation, the polymers having a William's plasticity number of up to 1.5 before irradiation. Preferred polymers having a viscosity between 500 and 100,000 centipoises at 350F. Suitable materials are polymers of alkylacrylates and methacrylates, the alkyl radical containing from 4 to 12 carbon atoms in the case of the acrylate and from 6 to 12 carbon atoms in the case of the methacrylate, e.g. butylacrylate, 2- ethylhexyl methacrylate and octyl acrylate and methacrylate. Copolymers of acrylic monomers may also be used. Examples are given. A thermostabilizer may be present as well as plasticizers, tackifiers and fillers. The compositions may be applied by roller coating, dip coating, extrusion or spray coating. The backing may be permanent or a release material such as a silicone-coated paper from which the hot-melt may be stripped for use as a filler or transferred to a further substrate. Suitable backings are paper, wood, metal foil, fabric and plastics such as vinyl polymers and copolymers and polyester plastics. The ionising irradiation may be X-ray, or electromagnetic irradiation from a radio-active source such as cobalt 60.
Patent GB-858994-A (GB)
Title: Improvements in production of rigid foamed plastics
IPC: C08G18/68
Filed: 1959-05-22
Abstract: Rigid cellular polyurethanes are obtained by esterifying a dicarboxylic acid with a polyhydric alcohol having at least three hydroxyl groups to give a polyester with carboxyl end groups and a hydroxyl number of zero, further esterifying with a glycol to give a product of acid number 0-30 and of low viscosity and uniform molecular weight, and finally reacting with an organic polyisocyanate and water.  The polyisocyanate may be in the form of an isocyanate terminated polyester.  Suitable components are given, and include all those in general use.ALSO:Rigid cellular polyurethanes are obtained by esterifying a dicarboxylic acid with a polyhydric alcohol having at least three hydroxyl groups to give a polyester with carboxyl and groups and a hydroxyl number of zero, further esterifying with a glycol to give a product of acid numbers 0-30 and of low viscosity and uniform molecular weight, and finally reacting with an organic polyisocyanate and water.  Suitable components are given, and include all those in general use.  A prepolymer may or may not be formed.
Patent GB-1219767-A (GB)
Title: Liquid fuel injection pumping apparatus
Inventor: KEMP KENNETH ALBERT WALTERS
IPC: F02M41/14
Filed: 1967-04-17
Abstract: 1,219,767. Fuel injection pumps. C.A.V. Ltd. March 27, 1968 [April 17, 1967], No. 17483/67. Heading F1A. Shuttle pistons 19, 20 are slidable in a bore 15 in a rotary distributor 11 having a delivery passage 17 and inlet passages 25, 26 leading to the space between the shuttles and the discharge chamber respectively. In one position of the distributor the passages 25, 26 are connected through throttle passages 29a, 30a, to the output of feed pump 21 to move the shuttles to the left until shuttle 19 engages stop 41; the leftward movement of the shuttle 20 is controlled by the throttle and determines the quantity which will be discharged. Inward movement of the plungers 13 on further rotation of the distributor hydraulically moves the shuttle 19 to the right and this movement is transmitted through the liquid column between the shuttles to shuttle 20 which discharges fuel through the delivery passage 17. When shuttle 20 opens passage 33 liquid is discharged and shuttle 19 engages shuttle 20 to continue its movement until it engages stop 16. Excess liquid displaced by plungers 13 opens valve 35 in shuttle 19 and flows to passage 33. In order to vary the timing of injection in accordance with speed the outlet pressure of the feed pump is made speed sensitive and acts on a valve 39 to supply extra liquid to the chamber 12 to move the plungers 13 further outwardly after the shuttle 19 has engaged the stop 41.
Patent GB-1136130-A (GB)
Title: Coated olefin polymeric films
IPC: C08J7/052
Filed: 1966-04-21
Abstract: 1,136,130. Thermosealable films. MONTECATINI SOCIETA GENERALE PER L'INDUSTRIA MINERARIA E CHIMICA. 21 April, 1966 [27 April, 1965], No. 17487/66. Heading B2E. A thermosealable film for packing comprises an olefin polymeric film coated with a primer which is the reaction product of an amine with an oxyranic derivative in a molar ratio of from 1:0.01 to 1:0.99 respectively and a further layer of an acrylonitrile, vinylidene chloride, vinyl chloride, or vinyl acetate copolymer. The primer layer may consist of a reaction product of an oxyranic derivative with an alkyleneimine polymer or with a simple amino-compound such as ethylene diamine, diethylene triamine or tetra-ethylene pentamine. The oxyranic compound may be a polymeric reaction product of epichlorohydrin with a bis-phenol or with a glycidyl derivative such as a diglycidyl ether of diethylene glycol or N,N'-diglycidyl piperazine. The substrate may be polypropylene film which has been previously bistretched. It may have been treated electrically and the film may be unstretched or stretched in only one direction. The primer layer may be coated on one or both sides of the film. Stretching may be carried out after coating. The primer may be applied as an emulsion or dispersion in water or in an organic solvent by spreading or by immersion at the film.
Patent GB-1104034-A (GB)
Title: Improvements in or relating to means for facilitating the bathing of sick persons and old people
IPC: A47K3/00
Filed: 1965-04-26
Abstract: 1,104,034. Invalid lifting devices. C. A. INGEMANSSON. 26 April, 1965 [27 April, 1964; 18 Nov., 1964], No. 17516/65. Heading B8H. [Also in Division A4] In apparatus for facilitating the bathing of sick or infirm persons and consisting of the combination of a carriage for transporting the person and a bath tub 1, each has a lifting and lowering device which includes a guiding device for a stretcher frame 41 and releasable means for blocking the frame against movement when correctly positioned on either of the guiding devices and means are provided for locking the two devices together in such a manner that the blocking means is released and the stretcher frame can be moved from one guide to the other. The bath tub 1 has four vertically adjustable legs and an opening for an hydraulic lifting device consisting of three telescopic cylinders 12, 13, 14 supporting a frame provided with rollers upon which the stretcher frame 41 may move. The carriage, Fig. 15, consists of a horizontal support with end arms 231 and castors 232 and vertical cylindrical fillers 236 acting as guides for sockets 237 supporting a similar roller frame which is movable vertically by means of an hydraulic cylinder 233 with piston 234 and pump housing 239. The carriage roller frame is also provided with wedge-shaped projections 210 which, when the lifting devices have been adjusted to the same height and the frames are moved together, engage rollers (202) on the bath tub roller frame to lock the frames together and at the same time lift a rail (216), which normally provides locking means to prevent the stretcher frame 41 moving on the frame, so that the stretcher frame can be moved from one frame to the other, the bath tub roller frame having a lever stretcher frame looking device which is engaged by a pin on the carriage frame to release it.
Patent GB-693371-A (GB)
Title: Improvements in or relating to joints and joint covers for multiple conductor electric cables
Inventor: FILLMORE KENNETH ALFRED
IPC: H02G15/115
Filed: 1950-07-13
Abstract: 693,371. Cable joints. TELEGRAPH CONSTRUCTION & MAINTENANCE CO., Ltd. July 12, 1951 [July 13, 1950], No. 17616/60. Class 38 (i). A moisture-proof cover for a multiple-conductor cable joint comprises a sleeve element, e.g. of polythene, consisting of a main part 1 enclosing the joints J between the conductors and closed at one end except for an aperture for one cable end C<SP>1</SP>, and a cap part 2 having a stem 5 which is a tight push fit in the other end of part 1. The cap also has an aperture for the other cable end C, both apertures being a tight fit round the cable ends. A bead on the stem 5 may interlock with a recess 8 in part 1. In a modification, the part 1 has caps 2 at both ends. For a three-way joint, Fig. 3 (not shown), the part 1 has a branching sleeve attached thereto and closed by a cap similar to the cap 2.
Patent GB-268612-A (GB)
Title: Improvements in web roll controlling mechanism for printing machines
IPC: B65H23/08
Filed: 1926-07-14
Abstract: 268,612. Hoe & Co., Ltd., R., (Hoe & Co., Inc., R.). July 14, 1926. Feeding webs.-The web roll of a printing- press is braked by a number of narrow belts or other friction devices engaging the surface of the roll, preferably at parts which form the margins of the pages when the web is printed. Means for varying the braking pressure during the running of the press and means for automatically increasing the braking pressure, upon stoppage of the press, to prevent roll overrun are described. The running roll R, and a spare roll S, are mounted in arms 5 on a rotatable shaft 6 and the web W from the roll R runs to the press over a guide roller 10. Narrow brake belts 15 provided with weights 19 at their free ends pass round a guide roller 16, drum 30, guide rollers 41, 40 and are secured to a shaft 20 carried by bell-crank levers 21 controlled by compressions springs 28. The weights 19 maintain the pressure of the belts upon the roll surface as the web is unwound. An increased pressure of the belts upon the roll may be obtained by turning the arms 5 into the position shown in broken lines, the roll engaging the shaft 20 and turning the arms 21 to compress the springs 28. The drum 30 is geared to a small electric motor so connected to the main driving motor of the press that upon stoppage of the press the small motor is operated to turn the drum 30 so as to apply an increased tension to the belts and thus prevent the roll overrunning.