baber/WOPTO huggingface dataset:
Patent GB-284307-A (GB)
Title: Method of and means for separating materials of different physical qualities
Filed: 1927-09-29
Abstract: 284,307. Granigg, B. Jan. 28, 1927, [Convention date]. Magnetic and like separators. - In a process for separating materials of different permeabilities or dielectric constants, the materials are passed through an electromagnetic or electrostatic field and disturb the field, the induced currents thereby created, or the dielectric constant, after amplification if necessary, being utilized to direct the materials in different directions. As shown in Fig. 2 (Cancelled), different materials 4, 5 are carried by a band 6 through a magnetic field produced by field windings 1, 2 on a core 3, Fig. 1 (Cancelled). The material 4 passing through the field causes an increase in the magnetic flux which operates a relay to turn a flap 8 into the positions. A-A and the material 4 is' directed in the direction I. After the material 4 has passed the flap moves back into the position B-B, and the material 5 passing through the field does not cause an increase in the flux, the flap 8 remains in the position B-B and directs the material in the direction II. Instead of the band 6, a rotary sorting table 5, Fig. 11, may be used, provided with pockets constituted by flaps 4 tiltable by means operated by the magnetic field to remove the material from the pockets. In another form, the materials slide down an inclined shoot which is provided with flaps adapted to be displaced by the increase of current caused by the deformation of the field. The coils 1, 2 may be inserted in separate oscillatory circuits which are coupled with one another either electrostatically or electromagnetically, suitable amplifying circuits being diagrammatically illustrated.
Patent GB-907163-A (GB)
Title: Arrangements for adjusting the frequency of a receiver local oscillator to its ratedvalue
IPC: H03L7/02
Filed: 1960-07-25
Abstract: 907,163. Automatic frequency-control systems. PATELHOLD PATENTVERWERTUNGS- & ELEKTRO-HOLDING A.G. July 25, 1960 [July 24, 1959], No. 25796/60. Drawings to Specification. Class 40 (5). A receiver local oscillator frequency is stabilized by the added outputs of two frequency discriminators, one directly responsive to the local oscillator output, the other to an I.F. and, to avoid negative feed-back of the modulation, of greater time constant than the first discriminator. Further, the second control system is of greater sensitivity due to higher amplification, than the first system. The first local oscillator may be a klystron whose reflector voltage is controlled. The system may be used in retransmitting F.M. microwave signals.
Patent GB-1439359-A (GB)
Title: Pack for nested containers
IPC: B65D21/02
Filed: 1973-05-30
Abstract: 1439359 Pack for nested containers METAL BOX Ltd 11 July 1973 [30 May 1973] 25857/73 Headings B8P and B8C A pack for a stack of nested frusto-conical containers 7 such as paper cake cups, comprises a first member 1 and a second member 2 interlocked by their rims. The first member is provided with a re-entrant base 3 having a wall 4, of taper slightly greater than that of the walls of the containers to be packed, and a slightly diverging side wall 6. The second member has a flat top 8 and a side wall 18 of a taper matching that of the wall 4 of the first member. Interlocking of the members can be effected by providing one member (in the illustrated embodiment the first member) with a peripheral flange 9 having an upstanding wall 10, 11, 16 defining a recess 11 and the other member (the second member) with a rim portion 12 of a U-shaped cross-section, the outer limb of which snap-fits into the recess in the rim of the first member. Alternatively the members may be attached by an interference fit or by taping and one member may be hinged to the other. In use the stack of containers is retained under slight compression within the pack by engagement with the walls 4 and 18 and accurate location is achieved by engagement of the rims of the containers with the wall 6.
Patent GB-811055-A (GB)
Title: Improvements in or relating to cooking apparatus
IPC: H05B1/02
Filed: 1957-08-16
Abstract: 811,055. Automatic temperature control systems. WESTINGHOUSE ELECTRIC INTERNATIONAL CO. Aug. 16, 1957 [Aug. 22, 1956], No. 25909/57. Class 38 (4). A temperature-control system for cooking meat in an oven maintains the oven temperature at a high level until the internal temperature of the meat as sensed by an inserted probe reaches a certain value, when the output of the oven heater is reduced so that the meat reaches a temperature at which it may remain hot without further change in its condition. As shown, oven heater 11 is supplied through contacts 25 controlled by an hydraulic thermostat 12 with control bulb 13, so that in the initial (cooking) stage the oven is maintained at a temperature of (say) 350‹ F. A probe 15 inserted into the meat 14 contains a thermistor the resistance of which falls with increasing temperature, and which is connected across the secondary of transformer 38 through a bi-metal element 32 and its heating resistance 35. As the internal meat temperature increases, the current through resistance 35 increases, and bi-metal element 32 bends to the right, hence moving pointer arm 31 to the right over the calibrated scale. Pivoted lever 44 is preset to a desired meat temperature; at a point depending on this temperature contacts 46 and 47 close to connect bi-metal element 45, its heating resistance 48 and a heater 17 across the transformer secondary 38. Since heater 48 operates on bi-metal 45 in the sense so as to open contacts 46 and 47 a cycling operation of these contacts commences, heater 17 being energized during the " closed " periods. Heater 17 raises the temperature of bulb 13 so as effectively to reduce the controlled temperature of thermostat 12, and since the " closed " periods of contacts 46 and 47 increase as pointer 31 continues to move to the right, the energization of heater 11 is progressively reduced until the meat temperature reaches its desired equilibrium value. A knob 26 enables adjustment of the initial cooking temperature. In a modification the probe 15 contains a self-heating bimetallic element having contacts connected in its circuit to transformer 38, and is wired in parallel with heater 17, the control unit 16 being omitted. When the combined heating due to the meat temperature and current through the element reach a predetermined value, the element starts to cycle and periodically remove the short circuit it has been placing on heater 17; the temperature at which this occurs is preset by varying the spring-loading of the element with a control knob. In a further modification a bi-metallic probe element as last described is arranged in a relay energizing circuit, the relay contacts being arranged in series with the thermostat contacts 25 of the oven heater 11.
Patent GB-1412926-A (GB)
Title: Structures of sandwich construction
IPC: B32B3/12
Filed: 1974-06-11
Abstract: 1412926 Laminates MESSERSCHMITT BOLKOW-BLOHM GmbH 11 June 1974 [15 June 1973] 25915/74 Heading B5N A structure of sandwich construction comprises at least two cover layers 1, 2 impregnated or coated with a binding agent interconnected via a honeycomb cell support core 3 situated therebetween, the cells 5 of the support core being at least partly filled with a fibrous mat 4, e.g. of polyamide fibres, applied to one of the cover layers. The structure may be produced by applying the support core 3 to one of the cover layers 2 before the binding agent applied thereto has hardened, introducing fibrous particles of a flock material into the cells perpendicular to the cover layer, e.g. by electro static flocking, applying another cover layer 1 to the support core and allowing the binding agent to harden, e.g. in an autoclave. The cover layers may be of fibreglass mat impregnated with a resin, wood or metal and the support core may comprise fibrous material impregnated with a thermoplastic substance.
Patent GB-1205135-A (GB)
Title: Agricultural spreading machine
Inventor: TEAGLE WILLIAM THOMAS
IPC: A01C23/00
Filed: 1968-05-30
Abstract: 1,205,135. Distributer. W. T. TEAGLE. 25 Aug., 1969 [30 May, 1968], No. 25959/68. Heading A1D. A distributer comprises a wheeled container 2 in one end of which is journalled a rotary spreader 9 for distributing material laterally and in which a wall 52 is movable to feed material towards the spreader, both spreader and wall being driven by the power take-off shaft of a tractor. A rotor 9 is journalled in the front wall 4 of the container and has blades 11, 12, gusset plates 13, and curved blades 14 fixed on to its face, spreaders 15 and cutters 16 attached so as to be pivotable within limits on the periphery of the rotor and flails 17 fixedly attached to the periphery. The movable wall 52 is intermittently advanced towards the rotor by winding cables (50), Fig. 4 (not shown), on to drums (48) mounted on a transverse shaft (46) at the front of the container and driven via an adjustable pawl and ratchet wheel (45). This wall may be returned for further loading of the container by lifting it up on to its rollers 64 which run on the top 53 of the sides of the container and winding up the cable 49 via handle 59. Material is distributed through an aperture 25 and over the opposite side of the container, being guided by the plate 26. If liquid is to be distributed, the rotor may be entirely encased in a housing (67), Fig. 6 (not shown), having a variable aperture (68).
Patent GB-158056-A (GB)
Title: An improved adjustable, reversible, tip up seat for motor cars or like road or other vehicles, or for other similar purposes
IPC: B60N2/10
Filed: 1919-10-23
Abstract: 158,056. Balleny, H. T. Oct. 23, 1919 Folding and reversible seats; seat adjustments. - A folding tip-up seat for vehicles comprises a back frame which can be swung over to either side of the seat proper, and which carries a back-rest, upholstered on on side only, and which is reversible on the back frame. The seat proper a has a double hinge c and one or more pegs e engaging holes h in a plate f, so that it may be angularly adjusted. The back frame l is hinged at k and carries the reversible pivoted back-rest j. Stops or catches are provided at o, q and p, and a lifting handle and support r may be provided engaging a clip s. The seat is shown in two positions of use in Fig. 1 and 2, and in the tipped-up position in Fig. 4.
Patent GB-631062-A (GB)
Title: Improvements in roller blinds
IPC: E04F10/06
Filed: 1947-09-25
Abstract: 631,062. Roller blinds. WALKER & WOODWARD, Ltd., and HALL, H. E. Sept. 25, 1947, No. 25995. [Class 20(iii)] A blind roller is revoluble by a cord, freely in one direction, and in the other against a frictional drag. imposed by a pawl engaging a toothed friction wheel on the spindle of the roller, and means are provided whereby the spindle is prevented from being jerked from the open-sided bearing slot in a side bracket. As shown, a roller blind 15 has a spindle 17 mounted in the open-sided slot 24 in a bracket 22, the spindle carrying a toothed wheel 12 positioned between a flange 18 and a spring-loaded disc 19. The pawl 10, pivoted at 26 to the bracket 22, has two side lugs 13 which selectively engage that side of the toothed wheel from which the blind is being unrolled. The central limb has two teeth 11 at its lower end engaging the toothed wheel 12. The radii of the curved surfaces of the pawl are approximately the same as that of the toothed wheel 12, the spindle 17 being thus prevented from leaving the slot 24. The opposite end of the roller is supported upon a stub axle 27 fitted to a bracket 28.
Patent GB-1275822-A (GB)
Title: Method and apparatus for developing electrostatic images
IPC: G03G15/09
Filed: 1969-05-21
Abstract: 1275822 Developing electrostatic images RANK XEROX Ltd 21 May 1969 [28 May 1968] 26014/69 Heading G2H An apparatus for developing an electrostatic image on a xerographic belt 12 comprises a belt 55 of electrically conductive material passing around cylinders 57 and 59 of non-magnetic material. A fixed permanent magnet 71 loads developer 53 comprising electroscopic toner and magnetic carrier particles on to the belt 55 from a trough, while a magnet 85 causes release of such developer at the opposite end of the belt. One or more magnets 101 are rotated beneath the upper run of the belt 55 to create a rotating magnetic field to form developer into a wave form on the belt 55. A D. C. potential 102, e.g. between 125 and 175 volts is applied to the belt 55 to improve solid area development and reduce background.
Patent GB-416814-A (GB)
Title: Improvements in or relating to the manufacture of paper
IPC: C09C1/02
Filed: 1933-09-21
Abstract: 416,814. Filler for paper; wasteliquor treatment. MEAD CORPORATION, Chillicothe, Ohio, U.S.A. Sept. 21, 1933, No. 26104. Convention date, Oct. 17, 1932. [Class 96.] Lime having over 80 per cent available calcium oxide, e.g. 98À86 per cent, is slaked under controlled conditions of temperature, concentration, alkalinity, and agitation and a soda ash solution causticized therewith to produce caustic liquor and a slow-settling sludge for use as a filler or pigment for paper. A limited quantity of water or dilute caustic soda solution is added through a pipe 13 to a tank 10 preferably cooled with a water-jacket and lime is gradually supplied through a pipe 12 and agitated for “-2 hours. A soda ash solution from a caustic soda recovery process if necessary with additional soda ash to compensate for loss is added preferably hot from a tank 23 to the tank 10 and the mixture boiled, e.g. for 10 minutes as by live steam to causticize it, preferably in two stages using excess lime in the first, the soda ash solutions being added whilst agitating to produce a required ratio of sodium present as sodium hydroxide to total sodium content, as determined by titration. The mixture is then filtered e.g. using an Oliver filter 16 having a cloth and a wire screen, the filtrate passing to a strong liquor storage tank 18 and the residue being washed and passed to a tank 21 where excess soda ash solution is added preferably hot, in the second stage of causticizing, the mixture being boiled for ¢-1 hour. Sand, lumps &c. are then removed by a screen &c. 26, the slurry passing to an Oliver filter &c. 28 the residue being washed and comprising the filler &c. for paper ; the filtrate and effluent washing liquors passing to a weak liquor storage tank 33 and used with strong liquor from the tank 18 to make up fresh digestion liquor, excess weak liquor being used to wash the residue from the Oliver filter 16, and as a diluent for the second stage causticizing tank 21. The spent digestion liquor with or without washing water is evaporated, incinerated as completely as possible, lixiviated, filtered e.g. using a Sweetland wire-cloth filter, to supply the soda ash for the tank 23. Free alkali e.g. less than 0À05 per cent. is neutralized by adding sulphuric acid &c. to the filler which is of particle size such that ¢-1 per cent is retained by a 325 mesh screen. In an example 3,800 lbs. of lime are slaked with 16,000 gallons of water, and 6,500 lbs. of soda ash in solution added e.g. at 180‹ F. and boiled, filtered, 900 lbs. of soda ash in solution added to the solids, boiled, the sludge screened through a 200 mesh screen, filtered and 7-10 galls. of sulphuric acid added. 600 lbs. of such lime sludge is added to 2,200 lbs. of a mixture of sulphite pulp, old paper stock and broke, and soda pulp, a little colour and alum being preferably added.
Patent GB-497867-A (GB)
Title: Improvements in or relating to cooking utensils
IPC: A47J27/00
Filed: 1937-09-27
Abstract: 497,867. Electric cooking-utensils. SMITH, M. S. Sept. 27, 1937, Nos. 26147/37 and 16021 /38. [Class 39 (iii)] An open-mouthed utensil contains a heating element g and is subdivided horizontally into an upper chamber which receives a food tray d and a lower chamber formed with an aperture in its wall through which plates j may be introduced. The aperture is fitted with a door k. The subdivision is formed by an annular ring f or by an apertured partition with slidable closures. A perforated plate o or wire gauze is arranged on the top plate j. Lugs m are provided to support a kettle.
Patent GB-1007314-A (GB)
Title: Receiver for a stereo fm multiplex system
IPC: H04B1/16
Filed: 1962-07-09
Abstract: 1,007,314. Stereophonic radio receiving systems. LOEWE OPTA A.G. July 9, 1962 [Aug. 11, 1961], No. 26169/62. Heading H4L. Relates to a receiver for the reception of stereophonic broadcast signals of the type in which an (L-R) signal is transmitted as an amplitude modulation of a subcarrier, the subcarrier being suppressed and a pilot signal at half the subcarrier frequency transmitted. As shown in Fig. 1, after demodulation of the L+R signal, the combined L+R signal, suppressed carrier L-R signal and pilot signal are supplied to the control grid of a valve 1 thus energizing a frequency-doubling circuit 2 tuned to the frequency of the pilot signal. Frequency doubled half-waves are fed to the control grid of a valve 7 and energize a circuit 8 tuned to the subcarrier frequency, feedback circuits 9, 10 being adjustable so that this stage can operate either as a synchronized oscillator or a selective amplifier. Alternatively it may be adjusted so that the stage only oscillates when the frequency doubled signal is applied to the control grid. The reconstituted subcarrier is supplied via capacitors 14, 15 to respective deflecting plates 16, 17 of a beam deflecting tube 18, the multiplex signal from the cathode circuit of valve 1 being supplied to the control grid of the tube 18. The demodulated, L - R signal appears in antiphase at the respective anodes of the tube 18 while the L + R signal is in phase at both anodes, the resultant signals at the respective anodes being the L and R signals respectively. A portion of the multiplex signal from the cathode of the tube 18 is combined with the output signals via potentiometers 25, 26 to compensate for crosstalk. A potentiometer 27 provides an adjustment for correct balance between the two channels. In an alternative arrangement, Fig. 2 (not shown), two pairs of oppositely poled diode switches are used instead of the beam deflection tube and are switched alternately by the subcarrier to produce the left and right signals. The subcarrier regenerator also is modified in that positive feedback is supplied via the screen grid instead of the control grid of valve 7.
Patent GB-482296-A (GB)
Title: Improvements in or relating to the manufacture of shaped cellulose articles
IPC: D01F2/04
Filed: 1936-09-26
Abstract: Artificial silk and other shaped articles are prepared from cuprammonium cellulose solutions by precipitating the cellulose in neutral or alkaline media in the presence of acid esters of polyhydric alcohols containing not more than 6 connected carbon atoms, or of water soluble salts thereof.  The ester or salt may be added to the cuprammonium solution or to the precipitating bath. Among suitable esters are those prepared from one of the following polyhydric alcohols, glycol, glycerol, erythrite, mannite, sorbite, and one of the following acids, phosphoric, sulphuric, boric, oxalic, phthalic acids.  Amounts of 1-10 per cent calculated on the weight of the cellulose are sufficient to prevent precipitation of cupric hydroxide in the precipitating funnel.  Examples are given illustrating the addition of the following esters to a cuprammonium spinning solution, glycerophosphoric acid, sorbite phosphoric acid, sorbite disulphuric acid ester, di-glycerine boric ester, and glycerine disulphuric acid ester.  Examples are given of the preparation of sorbite phosphoric acid and the sodium salt of sorbite disulphuric acid ester.
Patent GB-1492869-A (GB)
Title: Process of reacting epoxides with phenols and/or carboxylic acids and epoxy resin composition
IPC: C08G59/40
Filed: 1975-06-19
Abstract: 1492869 Reacting epoxides with phenols and/ or carboxylic anhydrides DOW CHEMICAL CO 19 June 1975 [21 June 1974] 26193/75 Heading C3B Vicinal epoxy group containing compounds are reacted with phenols, carboxylic acids, carboxylic acid anhydrides or a mixture thereof in the presence of a catalyst of formula in which R 1 , R 2  and R 3  are independently C 1-20  hydrocarbon or inertly substituted hydrocarbon radicals (e.g. n-butyl or phenyl), R<SP>4</SP> is hydrogen, benzyl or C 1-6  alkyl and A<SP>(-)</SP> is a neutralizing anion (e.g. bromide, iodide or chloroacetate). The catalyst may be used at 0À001 to 10 parts by wt. based on the combined reactants. Examples 1-23 relate to the preparation of linear epoxy resins by reacting a diglycidyl ether of bisphenol A with bisphenol A in the presence of I and (24-27) the curing of a diglycidyl ether of bisphenol A with hexahydrophthaline anhydride in the presence of I.
Patent GB-1484545-A (GB)
Title: Method and apparatus for automatic dilution
IPC: G01N1/38
Filed: 1976-06-23
Abstract: 1484545 Controlling dilution F HOFFMANN-LA ROCHE & CO AG 23 June 1976 [7 July 1975] 26207/76 Heading B1C In a method of automatically diluting a concentrated solution a peristaltic pump 1 is operated continuously at a constant speed in one direction and a suction pipe 31 connected to the pump is dipped alternately in the concentrated solution and in a diluent for a given number of pump strokes. Preferably the dilution process consists of three phases, in the first and last of which the suction pipe is immersed in the diluent and in the middle phase in the concentrate. If then the sum of the strokes of the pump 1 in the three phases is 100 the dilution ratio as a percentage is given directly by the number of strokes in the middle phase. In an apparatus for carrying out the method a sensor 10 delivers a pulse on the approach of each roller 9 of the pump 1, to a control unit which includes a counter 151 and means for controlling a drive unit 61 in dependence upon the counted number of pulses, the drive unit 61 serving to immerse the suction nozzle 31 in one or other of two vessels 8, 71 containing respectively concentrated solution and diluent. The apparatus shown provides for two stages of dilution and final supply of the diluted sample to an analyser (not shown). Conveyor means 16 bring successive samples to the dilution positions, the whole apparatus and its sequence of operations being controlled from a programming unit 17.
Patent GB-1254777-A (GB)
Title: Rotary pump or motor device
Inventor: FARRIS EDWARD LAWRENCE
IPC: F04C2/344
Filed: 1969-05-22
Abstract: 1,254,777. Rotary and reciprocating pumps and motors. E. L. FARRIS. May 22, 1969, No. 26225/69. Headings F1A and F1F. A rotary pump or motor of the sliding vane type comprises, a two-part casing 14a, 14b, Fig. 2, having a circumferential channel 20 of substantially semi-circular cross-section and a rotor 16 secured to a shaft 44 for rotation about an axis 18, Fig. 3, eccentric with respect to the casing axis. The rotor 16 which comprises a discshaped body 38 projecting radially into the channel diameter as the channel 20 in each of which is mounted a ball vane 28. The balls project through radial slots 50 into the channel so that they are caged. Operating as a pump, on clockwise rotation of the rotor, liquid is sucked into chambers 30 through a port 32 and discharged through a port 34. In rotating over the zone AC the working chambers remain at constant minimum volume and no pumping occurs. The bottoms of the bores 26 are inter-connected via passages 52 so that inward movement of the balls displaces the liquid into those bores in which the balls are moving outwardly to urge them sealingly into the channel. In a modified construction, the rotor is concentrically mounted with respect to the casing which now includes two inlets and two outlets. The two inlets may be inter-connected as also the two outlets to provide two pumps (or motors) operating in parallel. In another construction, passages 52b, Fig. 5 (not shown) in the rotor connect the bottom of the rotor bores with chambers 30b so that reciprocation of the balls 28b in the bores produces a secondary pumping action.