baber/WOPTO huggingface dataset:
Patent GB-1443668-A (GB)
Title: Magnetic recording head
IPC: G11B5/29
Filed: 1974-05-22
Abstract: 1443668 Magnetic recording heads HONEYWELL Inc 22 May 1974 [24 May 1973] 22815/74 Heading G5R A magnetic recording head has an electrically insulating substrate 2 supporting recording pins 4, 6, 8, 10 and carrying electrical conductors 12a, 12b, 12c, 12d, (20a) to (20d), Figs. 2, 3 (not shown, on both its major surfaces, each recording pin having an ampere-turn relationship with respective ones of the conductors on both said surfaces and being of a magnetically responsive material providing a sudden transition between magnetization levels of the pin at predetermined transition points along a B-H curve representing a change in a magnetic field applied to the pin, the conductors 12 a  to 12d on one said major surface being interconnected to form X-rows of a coincident current X-Y matrix, the Y-columns of which are formed by the conductors (20a) to (20d) on the other major surface, each recording pin being arranged at a respective one of the intersections of the X-Y matrix. A bias and reset winding 14 encompasses all of the pins 4, 6, 8, 10. To record with a selected pin the bias winding 14 together with the corresponding row and column conductors of the matrix are energized simultaneously. With first winding 14 energized the pin is at point C on the B-H plot, Fig. 4, energization of the row and column conductors causing a transition to a point D from which a rapid transition occurs to a point E, at which level a making effect is produced on the record medium. When the row and column signals cease, the pin magnetization level moves from E to a point F, still above the level needed to record a mark. The pin is returned from point F to the "off" state, point C, by a reset current through winding 14. The head may be used with a recording medium of the type disclosed in Specification 1,306,981 (Divisions G2 and H1) the medium comprising a continuous web of material in which highly reflective flakes are suspended, a magnetic field reorientating the preoriented flakes to provide a visual contrast between exposed and unexposed parts of the medium.
Patent GB-222302-A (GB)
Title: Improvements relating to valves
IPC: F16K35/04
Filed: 1923-09-11
Abstract: 222,302. Taylor, A., and West's Gas Improvement Co., Ltd. Sept. 11, 1923. Locking catches. - A screw-down valve having a flat collar h and conical plug g engaging with the seating i is provided with an extension e of the handle carrying a spring-pressed ball d engaging with slots c on the casing to determine accurately the position of the valve.
Patent GB-852519-A (GB)
Title: Process for the manufacture of salts of sulphuric acid esters of leuco vat dyestuffsof the anthraquinone series
IPC: C09B9/02
Filed: 1956-10-25
Abstract: Water-soluble salts of sulphuric esters of difficultly esterifiable leuco anthraquinone vat dyestuffs are made by treating the dye in a mixture of pyridine and/or a homologue or homologues thereof with one or more tertiary amines (other than diethylcyclohexylamine) of the general formula:  <FORM:0852519/IV (c)/1> where X is pentamethylene which may be substituted by methyl, R1 is methyl, ethyl, propyl or butyl and R2 is ethyl, propyl, isopropyl, butyl or cyclohexyl, the mixture containing 10-60% by weight of the tertiary amine or amines of the above formula, and in the presence of finely divided iron, cobalt, zinc, copper or a copper alloy, with chlorosulphonic acid in the form of its addition products with the said bases, at least 2 molecular proportions of chlorosulphonic acid being present for each anthraquinone nucleus present in the dyestuff, at least 1,4 molecular proportions of the said tertiary amine or amines being present for every 2 molecular proportions of chlorosulphonic acid except that if less than 4 molecular proportions of the acid is used then not less than 2 molecular proportions of said tertiary amine or amines is present for every 2 molecular proportions of acid, and at least 1,5 atomic proportions of metal being present for each anthraquinone nucleus in the dyestuff, and converting the resulting sulphuric acid ester into a water-soluble ester salt. Specifications 745,365, 745,368, 767,580 and 769,973 are referred to.
Patent GB-686803-A (GB)
Title: Improvements in and relating to clothes washing machines
IPC: D06F37/24
Filed: 1950-09-18
Abstract: 686,803. Washing and drying machines. BRITISH THOMSON-HOUSTON CO., Ltd. Sept. 18, 1950. [Oct. 1, 1949] No. 22858/50. Class 138 (ii). [Also in Groups II and XXXII] A washing-machine of the kind having a unitary structure comprising a motor M and gearing for operating a spin basket 6 and agitating means 5, has means for damping vibration of the unitary structure at below the normal operational speed of basket rotation to a much greater extent than at the normal operational speed, which means comprises a plurality of rigid arms 19 secured to the unitary structure and extending towards a fixed structure surrounding the unitary structure, and a plurality of damping devices 18 each connecting one of the rigid arms to the fixed structure, each damping device operating independently of the presence of washing liquid in the tub 1 of the machine and comprising an elongated member which is symmetrical about a line passing approximately through the vibrational node at normal operational speed and which is pivoted at one end on the said line so as to be swingable in a plane which passes approximately through the basket axis, whereby the damping device resists a component of relative motion between the arm and fixed structure which is directed along its axis, but responds to a component of the relative motion which is directed perpendicularly of its axis and in the plane through the basket axis by swinging about its end pivot. The damping devices 18 may be inclined as seen in Fig. 1 or horizontal as seen in Fig. 7 (not shown). The construction of the dampers 18 and the mounting of the unitary structure on springs 12 may be as described in Specification 646,403. Alternatively, the dampers may comprise dashpots having a ported piston operating in a viscous fluid within a closed cylinder pivoted to the supporting structure, and a piston rod affixed to one of the rigid arms, Fig. 8 (not shown). The pivotal mounting of the dampers 18 may include an anchorage 25 formed with a peak 26 providing a long fulcrum against which a spring structure 20 is drawn by a spring 30 (see Group XXXII). Alternatively, a plain pin mounting may be used for pivoting the damper, Figs. 4, 5 (not shown). Specifications 625,323 and 650,519 also are referred to.
Patent GB-251835-A (GB)
Title: Improvements in or relating to the production of distinctive lines or marks on the ground surface, applicable for use in guiding road traffic
IPC: E01F9/08
Filed: 1925-11-17
Abstract: 251,835. Pollard, A. Nov. 17, 1925. Surface markings.-A distinctive line or mark on a road tennis court, or like ground surface is formed by filling a channel with coloured grouting material 2 and reinforcing the material by an embedded horizontal member having one or more vertical projections which terminate flush with the ground surface. The grout is preferably formed of light-coloured spar or granite, mixed with cement, and the reinforcement may take the form of an inverted T- section metal bar 3, Fig. 1: or a flat metal bar furnished with a series of pegs 4, Fig. 4, may be employed.
Patent GB-652611-A (GB)
Title: Improvements in and relating to photographic cameras and cassettes therefor
IPC: G03D13/06
Filed: 1947-08-18
Abstract: 652,611. Photographic roll-film holders ; developing-apparatus. GENERAL RADIOLOGICAL, Ltd., and OSMENT, C. G. Aug. 18, 1947, No. 22878. [Classes 98 (i) and 98 (ii)] A take-up cassette for use with a photographic camera comprises an otherwise lighttight liquid-holding vessel having a narrow slot in one wall through which film can enter and a light-tight opening through which liquid can be introduced, the cassette being adapted to make a light-tight joint with the camera around the slot, and means for receiving and holding the film in the cassette so that no part lies in contact with another and no substantial area of film is in contact with the cassette. The cassette may be combined with a camera having a film slot around which the cassette makes a light-tight joint, means for feeding exposed film through the slot, and a guillotine adjacent to the slot to sever the film, preferably operated automatically on closing the cassette for removal from the camera. As shown, the cassette consists of a vessel 1 of e.g. plastic material with funnel 2 having lighttraps 3, 4, a drain-plug 8, and a removable flanged top 35 with a film entry slot 5 formed with guides 6, 7 and ribs 11, the ribs making a light-tight junction with the film slot of the camera. On attachment of the cassette, a pin 22 and lever 21 move a sliding plate 20 against spring action to open slot 5. A spool with a hub 12 and spirally-grooved flanges 13 is pivoted in the cassette by shafts on each side. One shaft is movable to drive the spool by hand or to support it freely, while the other has disconnectable friction gearing from the camera film driving mechanism. Film from the camera enters slot 5 and is fed into a trough 14 which bows it transversely, the trough being pivoted at 15 and held by a lug 18 and stop 19 so that the end of the film emerging. from the trough passes under a bar 16 near hub 12, the spool being disconnected from the camera drive and held still by a stop 17. The spool is then geared to the camera film drive, so that as film is fed into the cassette the spool rotates, and film is fed from the trough into the spiral grooves. When the spool is full (which may be indicated by a signal lamp), or when it is required to develop the film in the cassette, the cassette is removed, operating a guillotine in the camera (e.g. by a pin-and-lever system) to cut off the film, and plate 20 closes slot 5. The spool is turned to clear the film from trough 14, and the film is processed in the cassette, liquids being poured in through funnel 2 and removed by drainplug 8. According to the Provisional Specification, the cassette may be in the form of a drum with flat ends having spiral grooves on the inner faces, and the camera may have guide rollers to guide the cut end of the film into the cassette.
Patent GB-614813-A (GB)
Title: A circuit-arrangement comprising a secondary electron-emission tube
IPC: H03F1/08
Filed: 1946-08-01
Abstract: 614,813. Valve amplifying circuits. PHILIPS LAMPS, Ltd. Aug. 1, 1946, No. 22923. Convention date, May 30, 1940. [Class 40 (vi)] A tube having two succeeding secondary emission electrodes 5, 11, of which the last 11 is connected to the anode 6 through an output impedance 8 whose electric centre 10 is connected to the cathode 2, is provided with a back-coupling from the preceding electrode 5 to the control grid 3 so as to reduce the damping of the input circuit 7 and to decrease the input capacity. Fig. 4 shows a push-pull arrangement in which the output electrodes 1, 11<1> and 1<1>, 11 are interconnected by condensers 13, 14.
Patent GB-798242-A (GB)
Title: Improvements in or relating to electron tubes of the travelling-wave tube type
IPC: H01J25/48
Filed: 1955-08-10
Abstract: 798,242. Travelling wave tubes. SIEMENS & HALSKE AKT.-GES. Aug. 10, 1955 [Aug. 10, 1954], No. 23069/55. Class 39(1). A travelling wave tube has a delay line consisting of two combs with parallel bosses wherein the teeth of the two combs are staggered relatively to one another and one or more electron beams having rectilinear electron trajectories is or are directed between the planes substantially parallel to the bosses of the combs. In one form, Fig. 1, two combs 1, 2 having teeth 3, 4 ; 8, 9 are disposed so that the field between corresponding teeth of the two combs extends at about 45 degrees or even 65 degrees to the direction of the electron beam. One or more electron beams of electrons may be projected between the two comb lines, and a plurality of electron beams with different velocities or in opposite directions can be used. The comb teeth are square or rectangular in cross section, and the distance between the planes of the comb teeth is equal to the distance between adjacent teeth of a comb. In a modification, Fig. 2, the comb backs lie in the same plane and only the teeth lie in different planes ; the beam is projected perpendicular to the plane of the drawing. The device may be used for generating, amplifying or mixing, and may utilize a backward wave.
Patent GB-425668-A (GB)
Title: Improvements in freight handling systems
IPC: B65G63/04
Filed: 1934-08-11
Abstract: 425,668. Handling transferable vehicle bodies; platforms; roller-way conveyers ; electric motor control systems. TENNANT, W. J., 111, Hatton Garden, London.-(Motor Terminals Co.; 420, Lexington Avenue, New York, U.S.A.) Aug. 11, 1934, No. 23239. [Classes 78 (i) and 78 (iv)] [See also Group XXXVII] To facilitate the transfer of freight containers 40 from incoming to outgoing trains, a power - driven conveyer system is provided on the platform 23, and a crane or cranes movable both longitudinally and transversely serves to convey freight between the trains and the conveyer system. As shown in Fig. 2, railroad tracks 10 run along both sides of the platform which is fitted with two live roller-way conveyers 21, 22 running in opposite directions. A number of bridge cranes 30', 30<a> travel lengthwise of the platform, each crane spanning the two conveyers and one set of tracks 10, but the cranes may span both sets of tracks. The cranes carry overhead travellers 33 with cradles 34 engaging hooks on the containers 40. The conveyers comprise pairs of rollers 25, Fig. 5, engaging channel rails 41 on the containers, and driven in sets by a number of electric motors and countershafts 51. The motors are controlled by switches on the travelling cranes so that any craneman can stop the entire conveyer system whilst he clears the containers accumulated on his section by transferring them to outgoing trains or to storage, and any craneman can re-start his own section of the conveyer system. Overload switches stop the separate motors automatically if the progress of the containers on any section becomes blocked owing to the stoppage of the next conveyer, but the thrown switch is re-set by the starting of the next conveyer. The end section of the conveyer is provided with a limit switch in place of an overload switch. The control circuit, Fig. 7, for four motors M<1> ... M4 comprises four cranemen's switches C<1> ... C<4> which are shown closed by the switch arms in series 102. When the circuit has been broken by the movement of any one of these switch arms, any one motor may be re-started by a parallel circuit through the line 115 and switch arm 106. Each overload switch L<1>, L<2>, L<3> when thrown closes lower contacts in a circuit from the line of the next motor, say M<2>, through a re-setting coil 125 to the power line. The limit switch for the motor M' is shown at 134. Specification 201,838, [Class 78 (iv)], is referred to.
Patent GB-327656-A (GB)
Title: Improved means for attaching stencil sheets to duplicating machines
IPC: B41N1/24
Filed: 1929-07-29
Abstract: 327,656. Roneo, Ltd., (Deutsche Roneo Ges.). July 29, 1929. Stencils; stencil-printing apparatus.-A stencil 7 is attached to the cylinder 3 of a rotary duplicating machine by making pliable at and below its top edge the backing sheet 8 usually associated with the stencil sheet and forming a heading therefor, this pliable part when bent over forming a hook 9 adapted to engage an edge 5 provided on the cylinder 3. As shown, thin pliable strips 11 of sheet metal are glued or otherwise fixed between the backing sheet and a layer of covering paper 12. Alternatively, one strip of metal stretching over the whole width of the sheet may be used.
Patent GB-942868-A (GB)
Title: Preparing triethylenediamine
IPC: C08G18/20
Filed: 1960-07-04
Abstract: Triethylenediamine of structure: <FORM:0942868/C2/1> is prepared by passing a gaseous mixture of ammonia and one or more of mono-, di- and triethanolamine, in the ratio of ammonia to amine of 3-12:1, at a space velocity of 0.1-2 volumes of amine (measured as liquid) per volume of catalyst per hour, at a pressure of 0.5-2 atmospheres, into contact with inorganic acidic cracking catalyst particles maintained at 288 DEG -400 DEG C., withdrawing effluent vapours, and recovering triethylenediamine therefrom, e.g. by separating normally gaseous components and recycling ammonia contained therein, and fractionally distilling the residue.  Examples use silica-alumina catalysts such as kaolin.
Patent GB-275810-A (GB)
Title: Improvements relating to shafts, particularly for golf clubs
IPC: A63B53/10
Filed: 1926-09-22
Abstract: 275,810. Dunlop, S., (Pyratone Products Corporation). Sept. 22, 1926. Shafts.-A flexible shaft for a golf club or other implement which is subject to violent impact in a direction transverse to the longitudinal axis of the shaft embodies a hollow core and a non- metallic casing or covering in the form of a seamless tube sleeved over and shrunk upon the core and extending in the case of a golf club, the entire length of that part of the core which is between the grip and head of the club. In making the shaft the seamless tubular cover which may consist of pyroxylin is softened by heat and is drawn over a hollow core 23, Fig. 12, of metal or wood and allowed to cool so as to shrink upon the core. The core may consist of a series of tubular metallic sections 20, Fig. 2, of varying diameters telescoping into each other. The core may be slit longitudinally. In a modification, Fig. 9, the core 20 is covered with enamel 26 secured by fusing thereon, and provided with longitudinal grooves 25. A wooden casing 27, Fig. 7, may be glued over the enamel. An outer seamless casing 21, softened by heat, is afterwards shrunk upon the core. A solid wooden core may be used.
Patent GB-766436-A (GB)
Title: An improved mounting of a car body on multi-axle bogies of rail vehicles
IPC: B61F5/14
Filed: 1953-08-25
Abstract: 766,436. Mounting bodies on railway vehicles. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.-GES. Aug. 25, 1953 [Sept. 4, 1952], No. 23406/53. Class 103(6). A railway car body is supported on multi-axle bogies at four points, two being independent and the other two being connected by means of lever compensating means to distribute the load. The compensating means may be longitudinal or transverse. As shown in Fig. 1 the car body 1 at one side is supported by two bell crank levers 5, 6 on swing bolsters 3, the arms 6 being connected together by a rod 9. At the other side the car body is supported at two separate points on the swing bolsters. In the arrangement shown in Fig. 3 the car body 1 shown in end view is supported at one end on the swing bolster 3 by crank levers 5, 6, the arms 6 being connected by a rod 11. Fig. 4 shows a plan of a railway vehicle in which at each end a swing bolster 3 is connected by levers 5 to clamping members 12 for torsion bar springs 13. The members 12 are pivotally mounted in brackets 8 secured to the car body. At one end the springs 13 are rigidly connected to the car body by means of clamping members 14. At the other end the springs are connected to clamping members 15 which are rotatably mounted in bearings in the car body and are each secured to a lever 17. The levers engage in the ends of a lever 18 which is pivotally mounted on a pin 19 secured to the car body.
Patent GB-1276203-A (GB)
Title: Method of doping a silicon member
IPC: H01L21/316
Filed: 1970-05-14
Abstract: 1276203 Semi-conductor devices BROWN, BOVERI & CO Ltd 14 May 1970 [16 May 1969] 23455/70 Heading H1K In order to produce a lightly doped surface layer, i.e. less than 10<SP>17</SP> atoms /cm.<SP>3</SP>, in a silicon body, the body is first etched and washed and thereafter boiled in a solution of an oxidizing liquid including less than 5% by volume of a dopant compound, e.g. a solution of 1% by volume of orthophosphoric acid (85% concentration) in nitric acid (65% concentration) producing a doped oxide layer, and then heattreated to diffuse the dopant atoms into the body, whereafter the oxide layers are removed. A phosphorus dopant concentration of 6 Î 10<SP>16</SP> atoms/c.c. may be obtained from the above. An alternative solution is 0À1% by volume of orthophosphoric acid in nitric acid to achieve a concentration of 5 Î 10<SP>15</SP> atoms/c.c. Alternatively sulphuric acid may replace nitric acid as the oxidizing liquid, and for a boron diffusion boric acid replaces the orthophosphoric acid.
Patent GB-713772-A (GB)
Title: Improvements in or relating to fireproof structural elements of highly basic stones
IPC: C04B35/03
Filed: 1951-10-09
Abstract: A fireproof structural element comprises basic fireproof stones and a mortar having finely divided magnesium and/or calcium carbonate as its mian constituent.  Fluxes, e.g. oxides of aluminium, silicon, iron and alkali metals or materials containing them, e.g. cements, slags, iron oxide scale, roasted pyrites and dust of natural stones may be added.  In examples crude dolomite is mixed with 1. Portland cement or 2. basalt.
Patent GB-461649-A (GB)
Title: Improvements in or relating to the production of resin emulsions
IPC: C08L1/08
Filed: 1935-08-21
Abstract: Aqueous emulsions of synthetic resins are made by dissolving or dispersing the resin in, or diluting it with a volatile organic solvent, emulsifying the product in water in the presence of bentonite or like clay and a soap such as sodium oleate, and distilling off the solvent.  Phenol-aldehyde, urea-aldehyde, and alkyd resins, and particularly resins made as disclosed in Specifications 267,736, 293,453, and 324,025, [all in Class 2 (iii)], are specified.  The emulsifying agents are in general together equivalent to from 1--10 per cent of the water.  In an example, a resin obtained from phenol, tung oil, hexamethylenetetramine, and phosphoric acid is taken up in benzene, added with agitation to water containing equal weights of sodium oleate and bentonite, and the emulsion boiled under atmospheric pressure or vacuum, for example by passage of steam, the benzene distilling with some of the water. Other solvents such as toluene, ethyl acetate, and volatile alcohols and ketones, e.g. acetone, may replace benzene.  The resulting emulsion can be used for coating materials such as cloth and paper, and for impregnating brake linings.  The Specification as open to inspection under Sect. 91 includes the use of any two or more emulsifying agents.  Casein-ammonia and gum arabic are also specified.  This subject-matter does not appear in the Specification as accepted.ALSO:Aqueous emulsions of synthetic resins are made by dissolving or dispersing the resin in or diluting it with a volatile organic solvent, emulsifying the product in water in the presence of bentonite or like clay and a soap such as sodium oleate, and distilling off the solvent.  Phenol-aldehyde, urea-aldehyde, and alkyd resins, and particularly resins made as disclosed in Specifications 267,736, 293,453, and 324,025, [all in Class 2 (iii)], are specified.  The emulsifying agents are in general together equivalent to from 1--10 per cent of the water.  In an example, a resin obtained from phenol, tung oil, hexamethylenetetramine, and phosphoric acid is taken up in benzene, added with agitation to water containing equal weights of p  sodium oleate and bentonite, and the emulsion boiled under atmospheric pressure or vacuum, for example by passage of steam, the benzene distilling with some of the water. Other solvents such as toluene, ethyl acetate, and volatile alcohols and ketones, e.g. acetone, may replace benzene.  The resulting emulsion can be used for coating materials such as cloth and paper, and for impregnating brake linings.  The Specification as open to inspection under Sect. 91 includes the use of any two or more emulsifying agents.  Casein-ammonia and gum arabic are also specified.  This subject-matter does not appear in the Specification as accepted.