baber/WOPTO huggingface dataset:
Patent GB-842713-A (GB)
Title: Improvements in magnetic core storage devices
IPC: H03K3/51
Filed: 1956-08-24
Abstract: 842,713. Circuits employing bi-stable magnetic elements. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 24, 1956 [Aug. 25, 1955], No. 25996/56. Class 40 (9). [Also in Group XXXV] The intensity of the remanent flux in a magnetic storage core 5 is the analogue of the pulse signal applied to input winding 7. The record is read in a non-destructive manner described in Specification 789,668. The voltage in output winding 9 constitutes a measure of the stored signal and may be used to control a voltage indicator 19 such as an oscilloscope. In Fig. 1, the input signal is provided by a battery 15, a rheostat 17 and a switch SW1. In Fig. 2 a constant battery 15 is switched to energize any one of three windings 7a, 7b, 7c, which embrace different proportions of the crosssection of the core. The battery is sufficient to saturate the part of the core linked with any winding to which it is connected. The core can thus be set to any one of three discrete stable states by means of the switch SSW. The windings may be used in combination to produce further states. In each embodiment, a battery 21 and a switch SW2 is used to reset the core before a storage operation.
Patent GB-759038-A (GB)
Title: Improvements in and relating to high frequency heating apparatus
Inventor: STYLES PETER ROBERT
IPC: H05B6/50
Filed: 1953-09-21
Abstract: 759,038. Automatic frequency control systems. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Sept. 20, 1954 [Sept. 21, 1953], No. 25997/53. Class 38 (4). In an R.F. heating, e.g. diathermy, apparatus in which the oscillator 11, 12 is coupled to a treatment circuit 16 influencing the frequency of the oscillator the oscillator is coupled also to a frequency discriminator whose output, amplified and applied to a motor 19, controls variable tuning elements, e.g. capacitors 15a, 15b of the treatment circuit to compensate any reactance charges in the load circuit and stabilize the oscillator at the cross-over frequency of the discriminator. A switch 35 may be operated to disconnect one of the push-pull amplifier valves 33, 34 and drive the motor 19 till the discriminator operating range is reached. The capacitors 15a, 15b may be controlled by cams giving the capacitors a continuous increase followed by a quick return to their minimum value, of, if the capacitors are of the alternate increase and decrease type a further switch may be in series with the switch 35 and controlled by a cam on the cam-shaft so that the motor 9 is always driven till a position of stability of the capacitors is obtained. Specification 718,439 is referred to.
Patent GB-744241-A (GB)
Title: Manufacture of new esters of 20:21-ketols of the pregnene series
IPC: C07J75/00
Filed: 1952-10-16
Abstract: The invention comprises 21-esters of furane-2-carboxylic acid and D 4-3-keto- and D 5-3-hydroxy-20-keto-21-hydroxy-pregnenes which may contain a hydroxy group in the 17-position and/or a hydroxy or a keto group in the 11-position and the preparation thereof by the methods described in the examples.  In the examples desoxycorticosterone - furate - (2) is prepared by treating desoxycorticosterone with furane-2-carboxylic acid chloride in the presence of pyridine while cooling and by refluxing D 4-3,20-diketo-21-chloropregnene and the sodium salt of furane-2-carboxylic acid in acetone, D 5 - 20 - keto - 3b ,21 - dihydroxy - pregnene-21-furoate-(2) is prepared by heating D 5 - 3b  - hydroxy - 20 - keto - 21 - diazo - pregnene with furane-2-carboxylic acid in xylene and may be oxidized to desoxycorticosterone-furoate-(2) with cyclohexanone and aluminium isopropylate, D 4 - 3,11,20 - triketo - 17a  - hydroxy - 21 - furoyl - (2) - oxypregnene is prepared by treating D 4-3,11,20-triketo-17a , 21-dihydroxy-pregnene with furane-2-carboxylic acid chloride in pyridine while cooling, and D 4 - 3,20 - diketo - 17a  - hydroxy - 21 - furoyl - (2)-oxypregnene is similarly prepared using the acid chloride. Other reactants mentioned are D 5 - 20 - keto - 3,21 - dihydroxy - pregnene, D 4-3,20 - diketo - 11,21 - dihydroxy - pregnene and D 4 - 3,20 - diketo - 11,17a ,21 - trihydroxy - pregnene.  Other esterification methods mentioned are those using esters, halides or the anhydride of furane-2-carboxylic acid with the required 20,21-ketols in the presence or absence of condensing agents, or furane-2-carboxylic acid or its salts may be reacted with esters of the required 20,21-ketols especially those with hydrohalic acids.
Patent GB-430736-A (GB)
Title: Improvements in metal vapour rectifiers
IPC: H01J13/28
Filed: 1933-09-20
Abstract: 430,736. Metallic-vapour rectifiers. SIEMENS - SCHUCKERTWERKE AKT. - GES., Siemensstadt, Berlin. Sept. 20, 1933, No. 26011. Void [Abridged as open to inspection under Sect. 91 of the Acts, March 21, 1934]. [Class 39 (i)] Residual charges within the vicinity of the anode are removed by the supply thereto of metal vapour which is not ionized, the supply being effected periodically and with the frequency of the alternating-current supply by an arrangement which utilizes the fluctuations of the vapour pressure in the anode shield. The vapour is delivered to the anode through the tube 5, the lower end of which is adjacent the bottom wall of the rectifier. The tube may be secured to the shield 3 or to the bottom of the rectifier or to a cooling device. It may form part of a grid, or may be provided with gridshaped projections, which prevent back-ignition. The distance of the upper end of the tube from the anode is equal to the diameter of the tube and the tube is adapted to conduct heat away from the interior of the shield. It is arranged on the axis of the discharge and, therefore, may be located eccentrically or concentrically in the shield, and it may consist, wholly or partly of metal or ceramic material. In other forms, the tube may be bent so that its lower end is adjacent a side wall of the rectifier or it may be located externally of the shield or provided with nozzles at its ends.
Patent GB-902242-A (GB)
Title: Electromagnets
IPC: H01F7/14
Filed: 1959-07-29
Abstract: 902,242. Electromagnets. OLYMPIA WERKE A.G. July 29, 1959 [Sept. 24, 1958], No. 26029/59. Class 35. An electromagnet has a pivoted armature 1, T- shaped in cross-section, the leg 4 of the T entering the energizing coil. The coil also surrounds the leg 5 of a fixed yoke member, also T-shaped, and the meeting edges of the armature and yoke may be shaped as shown or otherwise to provide a desired operating characteristic. The pivot may comprise a hinge-pin 2 or a knife edge, and the armature has a driving projection 9 either integral with the armature or of brass. The width of the electromagnet is small so that a number may be built on to a common base-plate 6, with a common hinge block 8.
Patent GB-536809-A (GB)
Title: Electric steaming iron
IPC: D06F75/16
Filed: 1939-09-08
Abstract: 536,809. Hand-irons. TRIGGS, W. W. (Pohl, E. F.). Sept. 18, 1939, No. 26076. [Class 138 (ii)] A hand iron is constructed with a hollow body 1 provided with longitudinal and transverse partitions 31, 32 to form an upper chamber 30 from which steam, generated from water 2 by an electrical heating element 13 between the body and a sole plate 8, passes by a tube 25 and a ring of apertures 24 in a countersunk screw 20 to the work being ironed. The sole plate is secured by the screw 20 and by a screw at the rear between the plugs 15 for the electrical connections, which parts are arranged in a recessed part at the rear of the body 1. A cover 44 having a recess 40 over the top of the tube 25 is secured to the top of the body, and an insulating handle 45 is secured by screws 46, 47. The tube 25 passes through the partition 31 which has an aperture 36 to prevent steam pressure from building up in the upper chamber, a cover plate 39 being arranged about the aperture to prevent water splashing up to enter the top of the tube.
Patent GB-1389525-A (GB)
Title: Anthelmintic phosphonoureido compounds
IPC: C07C303/36
Filed: 1973-06-01
Abstract: 1389525 Anthelmintics ROHM & HAAS CO 1 June 1973 [5 June 1972] 26150/73 Heading A5B [Also in Division C2] An anthelmintic composition comprises, together with a suitable carrier, an arylene compound whose free valencies are satisfied by (1) a phosphonoureido or phosphonothioureido group attached to the arylene nucleus through a free valence of the ureido group and (2) an amino group or an acylureido or acylthioureido group attached to the arylene nucleus through a free valence of the ureido group, optionally together with other active ingredients such as thiabendazole, phenothiazine, piperazine, tetramisole, pyrantel, niclosamide or bunamidine. The arylene compound preferably has the formula I: where A is arylene, which may have substituents, T is ureido or thioureido, R 1  and R 2  are C 1-18  monovalent aliphatic or aromatic groups, Z is -NR 3 R 4 , where R 3  and R, are hydrogen or C 1-18  aliphatic, or an acylureido or acylthioureido group in which the acyl group has 1 to 18 carbon atoms.
Patent GB-1182892-A (GB)
Title: Improvements in and relating to Clamping Devices.
Inventor: LEBRAEUS ROLF
IPC: B30B15/02
Filed: 1968-05-31
Abstract: 1,182,892. Clamping device. PRESSEN-UND SCHERENBAU ERFURT VEB. 31 May, 1968, No. 26213/68. Heading B3H. A tool or sliding table clamping device for a press comprises a double-acting piston-cylinder assembly 1 pivoted in a housing 3 and whose piston-rod 2 has a bifurcated end 4 to which a clamping arm 5 is pivoted. The arm has a guide slot 11 in which a pin 6 fixed to the housing engages. The pin 6 is preferably constructed as an eccentric to establish conformity of the line of force between the clamping point and the cylinder. A guide link 9 is pivoted to the housing at 10 and pivoted to the arm by a pin 8 which extends between the legs of the bifurcated end 4. The assembly may be hydraulic or pneumatic and downward movement of the piston causes the arm 5 first to pivot towards the table 13 and when vertical to move downwards to clamp the table. The table is moved out of the press over the arm which when retracted is positioned below the table.
Patent GB-1312212-A (GB)
Title: Fastener
IPC: F16B19/14
Filed: 1971-04-19
Abstract: 1312212 Fasteners HILTI AG 19 April 1971 [11 June 1970] 26262/71 Heading F3A [Also in Division F2] A fastener (2, Fig. 1, not shown) for driving into hard materials such as concrete, brick, iron or steel has at its front end a washer 3 for retaining and guiding the fastener in the barrel of a driving tool, the washer comprising circular segments for guiding the fastener 3d, 3e, 3f and between each pair of segments a retaining tongue 3a, 3b, 3c which when viewed in the axial direction of the fastener protrudes past the circumference of the outer edges of the segments.  The tongues are preferably thinner than the segments.
Patent GB-1513518-A (GB)
Title: Polyoxymethylene moulding compositions
IPC: C08L61/28
Filed: 1976-06-24
Abstract: 1513518 Polyoxymethylene moulding compositions DEUTSCHE GOLD-UND SILBERSCHEIDEANSTALT 24 June 1976 [10 Sept 1975] 26270/76 Headings C3K C3M and C3R Moulding compositions comprise (1) a polyoxymethylene, (2) 0À001-2% of an antioxidant and (3) 0À001 to 30% of finely divided crosslinked water-insoluble precipitation polycondensate of formaldehyde and melamine in molar ratio 1À2 : 1 to 10 : 1, wherein up to 20 mole per cent of the melamine may be replaced by other co-condensible substances. The polycondensate may be prepared by reacting formaldehyde with melamine and optionally a co-condensable substance, e.g. dicyanodiamide, 2,5 - diamino - 1,3,4 - triazole, urea, amides, ethanolamines, aromatic amines, phenols, hydrazines and hydrazides, in aqueous alkaline medium which may contain a protective colloid, the resulting precondensate being crosslinked and precipitated by acidifying the medium. The antioxidant may be a hindered phenol, and the compositions may also contain heat and light stabilizers, fillers, processing aids, nucleating agents, pigments, acid acceptors and flameproofing agents. Examples describe compositions comprising a copolymer derived from trioxane, 1,3-dioxepane and butylal and polycondensates derived from melamine, formaldehyde and optionally ethanolamine.
Patent GB-276525-A (GB)
Title: Improvements in gripping devices for ropes, cables and rods
IPC: E06B9/324
Filed: 1926-10-23
Abstract: 276,525. Carels, H. Oct. 23, 1926. Grips, sliding wedge and roller type.-In a gripping device for a rope, cable, or rod of the kind in which a spring- controlled flange forces metal balls along a conical surface into engagement with the rope, the balls 9 are lodged freely between the flange 8 and the cone 2 and are of such size that they cannot escape throught the opening provided in the cone and flange for the passage of the rope. The gripping device is shown in Fig. 4 applied to the guide 16 of a lift and acting as a safety suspension device when the hoisting cable breaks. A bent lever 13 pivoted to the top of the lift has one end attached to the hoisting cable and the other end formed as a hook 15 which engages a groove formed in the flange 8. A spring 13<1> pulls down the upper end of the lever 13 when the cable breaks and releases the flange 8. A double-acting gripping device for a metal bar 18 is shown in Fig. 5. The flanges 8<11>, 8<111> are controlled by pivotally-connected extensions 17.
Patent GB-995246-A (GB)
Title: Gear shaper
IPC: F16H57/02
Filed: 1961-07-21
Abstract: 995,246. Toothed gearing. K. K. TOKYOKIKAI-SEVSAKUSHS, and NIHON-SEIKO KABUSHIKU KAISHA. July 21, 1961 [Aug. 23, 1960], No. 26609/61. Heading F2Q. [Also in Division B3] In a gear shaper wherein a rotating cutter shaft 8, Fig. 2, is reciprocated by a rack 7 rotatably mounted thereon, the rack 7 is driven by a pinion 6 splined on an oscillating shaft 3, the pinion teeth being tapered (Fig. 1) and the rack teeth correspondingly inclined so that backlash can be taken up by axial adjustment of the pinion 6-as by shims. The shaft 3 is oscillated by reciprocation of a rack 1 engaging tapered teeth on an axially-adjustable pinion 2. The rack sleeve 9 is guided for reciprocation by balls 10. The rack 1 is similarly guided and may be reciprocated by crank mechanism.
Patent GB-741768-A (GB)
Title: Improvements in or relating to meat cutters
IPC: B02C18/12
Filed: 1953-09-29
Abstract: 741,768. Mixing appliances. STEPHAN, S., [trading as STEPHAN UND SOEHNE, A.]. Sept. 29, 1953 [Jan. 17, 1953; June 11, 1953], No. 26668/53. Class 86. [Also in Groups VI and XXIV] Meat is cut up or mixed by radial or diametrical knives t on a vertical shaft p rotating in a stationary bowl a, threaded on a hollow mandrel q secured over the shaft p and the knives t are held at an inclination between spacing discs r on the shaft by a clamp nut u, the discs r and knives being coupled together in pairs by pins s. The knives can also be given a twist about their longitudinal axes such inclinations effecting downward feed of the meat which combined with the high speed of rotation forces the meat out and then up the sides of the bowl from which it falls down to the knives for repeated cutting. The cutting unit can be withdrawn by releasing the lock nut v and lifting out the hollow mandrel q. The bowl can be emptied by tipping it about trunnions by a hand lever e. The drive motor h can be started only when the lid is closed about its hinge whereby a locking pin i can enter a notch k, allowing hand control f to operate the motor starter g. A switch h<SP>1</SP> on the motor h causes the motor to drive at 2,800 r.p.m. or to reverse for mixing at 1,400 r.p.m. For mixing in the forward direction the edges of the knives are masked by clip-on sheaths x, Fig. 4, (not shown). An alternative mixing unit z, Fig. 7, with helically arranged blades may replace the cutting unit. The meat juices may be separated out from the meat by a perforated centrifugal drum w inside the bowl.
Patent GB-985178-A (GB)
Title: Process for purifying trithiane
Filed: 1961-07-24
Abstract: Trithiane contaminated by at least one sulphur compound is purified by dissolving in an inert solvent, a part of the solvent and the sulphur compound is distilled off by heating the solution at 100 DEG to 200 DEG  C., and purified trithiane is isolated by crystallization.  The amount of solvent distilled off is 2 to 20 times the crude trithiane.  Depending on solvent B. Pt. reduced or superatmospheric pressure is used during heating.  Solvents mentioned are hydrocarbons including halogenated hydrocarbons, ethers, esters, nitriles, amines and sulphones.
Patent GB-180610-A (GB)
Title: A variable drawbar attachment for agricultural tractors and the like
IPC: A01B63/02
Filed: 1921-10-10
Abstract: 180,610. Rutley, S. F. Oct. 10, 1921. Couplings for tractors.-A laterally adjustable draw-bar attachment for the rear of an agricultural tractor comprises a draw-bar 4 pivoted at 5 to the tractor frame, a transverse guide-bar 3 carried by extensions 1, 2 of the tractor frame and an operating lever 12 adapted to adjust the draw-bar laterally by means of a link 10. The single transverse bar 3 is disposed between the draw-bar 4 and a short bar 7 secured to the draw-bar while double-ended swivelling eye-pieces 9 arranged between the members 4, 7 serve for the attachment in alternative positions of the link 10. A doubleended eye-bolt 11 passes through the operating- lever 12 which is pivoted at 13 and is fixed by engagement with recesses between segmental blocks carried on a sector 17 formed from a single piece of flat bar. In a modification, the drawbar slides between two transverse guide-bars 3.
Patent GB-861024-A (GB)
Title: Water-soluble cationic condensation products and the preparation thereof
Inventor: HART RAYMOND GEORGE
IPC: C08G12/46
Filed: 1957-08-26
Abstract: Water-soluble cationic condensation products are prepared by mixing (1) the partially-condensed water-soluble viscous cationic material resulting from heating an acidic aqueous solution of 1/3 to 1 mol. of an aliphatic polyhydric alcohol containing 2 to 6 hydroxyl groups, 1 mol. of epichlorohydrin and an acid until the exothermic reactions begin to slow down, then adding about 1 mol. of an aliphatic polyamine containing 2 to 5 primary or secondary amine groups and continuing the heating with (2) formaldehyde and urea in the proportion of 1.5 to 4 mols. of formaldehyde to 1 mol. of urea, the proportion of the cationic material being about 1 part to 3 parts of the urea by weight; heating the resulting mixture at a temperature between about 40 DEG  C. and its boiling-point and at a pH of 1.5 to 10 until a viscous solution is produced; then discontinuing the heating and adjusting the pH to 7 to 8.  In the above process formaldehyde may be replaced by acetaldehyde, propionaldehyde, butyraldehyde or furfuraldehyde and urea by thiourea or guanidine. Polyhydric alcohols specified are glycerol, sorbitol, mannitol, trimethylol ethane, trimethylol propane, ethylene glycol and pentaerythritol. The only amine specified is diethylene triamine. The resin solutions may be spray-dried to form water-soluble powders. Examples are given of foundry mould compositions prepared from the above resins in admixture with sand, cornflour, kerosine or fuel oil, water and stearic acid plus or minus boric acid; of high wet-strength paper prepared by treatment with an aqueous solution of the resins; and of the preparation of an adhesive for corrugated box-board from the resins in admixture with corn starch, caustic soda and water.
Patent GB-1002174-A (GB)
Title: An arrangement suitable for use in controlling or regulating longitudinal or rotational movements of a machine tool
IPC: G05B19/16
Filed: 1962-07-12
Abstract: 1,002,174. Measuring displacement electrically. SIEMENS SCHUCKERTWERKE A.G. July 12, 1962 [July 12,1961], No.26925/62. Heading G1N. [Also in Division G3] An arrangement for measuring the displacement of e.g. a machine tool relative to a workpiece comprises two reading heads 1, 1a (Fig. 1) each consisting of an E-shaped core 4, 4a with an energizing winding on its centre limb 7, 7a, and the gaps 2, 2a, 3, 3a between the outer limbs and the centre limb of each head being spaced apart by a distance equal to an odd multiple of half the pitch of a scale formed by equally spaced magnetic portions 8 and gaps 9, the resultant flux in the centre limb being measured by Hall plates 6, 6a, or pickup coils. The spacing between the heads 1, 1a is such that, as shown, when the gaps 2a, 3a are bridged by magnetic portions 8, the gaps 2, 3 are not. The windings on centre limbs 7, 7a are fed with A. C.voltages which are 90 degrees out of phase,and the Hall plates 6, 6a are fed with D.C., or vice versa, the output voltages from the Hall plates being series connected so that the phase of their resultant relative to the energizing voltages is indicative of the displacement of the heads 1, la relative to the scale. In an alternative arrangement (Fig. 2), the two gaps 13, 14 of a single E-shaped core 12 are spaced by an odd multiple of half the scale pitch and the two magnetic loops in the core are separately energised by D.C. in windings 15, 16 producing opposing fluxes in the centre limb. The positions of the gaps 13, 14 relative to the scale determine the magnitude and direction of the resultant flux in the centre limb, and hence the magnitude and polarity of the Hall voltage. When used in a machine tool programming system, windings 20, 21 on the outer limbs are energized with rectified A.C. from a variable transformer arrangement 22 in a predetermined manner, and the flux in the centre limb is reduced to zero by corresponding movement of the reading head and associated machine tool part. The currents in windings 15, 16 and 20, 21 may alternatively be A.C., and the Hall plates 6, 6a replaced by pick-up coils. Each sensing gap may be subdivided into a plurality of gaps (Fig. 3, not shown), the scale comprising a high permeability material foil which is etched to form the voids 9 and scale portions 8.