baber/WOPTO huggingface dataset:
Patent GB-292334-A (GB)
Title: Improvements relating to the production of acid-proof structures
IPC: C08L61/06
Filed: 1927-05-26
Abstract: 292,334. Wirth, J. K. May 26, 1927. Phenol-aldehyde compositions. - Acid-proof structures are constructed with the aid of phenol aldehyde resin mixtures which are hardened by treatment with acid in the cold or with moderate heat. The mixtures may be used either for cementing or jointing acid-proof slabs, or for coating the surface of the apparatus, or the apparatus may be constructed entirely of the mixture with or without a metal or other reinforcement. An uncondensed mixture of phenolaldehyde may be used instead of the resin itself. Inert materials such as quartz, asbestos, kieselguhr, talc may be mixed with the resin, or fibres may be impregnated with it. The hardening may be effected by means of an acid salt or in some cases by means of acid which has already permeated the structure to be lined. When the composition is used for lining apparatus the latter is first coated with an acid-proof covering, e.g. of rubber. According to a typical example, 30 parts of liquid phenolaldehyde resin and 17 parts of hardened resin are mixed with 6 parts of 15 per cent aqueous hydrochloric acid, the surplus water is poured off and the resulting mixture, which remains soft for 1-2 hours, is used as a cement. It sets hard in 24 hours.
Patent GB-724604-A (GB)
Title: Improvements in braiding machines
IPC: D04C3/00
Filed: 1953-05-21
Abstract: 724,604. Braiding-machines. CROSSLEY, A., CROSSLEY, H. M., and CROSSLEY, H. May 21, 1953, No. 14279/53. Class 74 (1). In one embodiment the braiding-machine comprises two concentric circles of horn gears b, e and fixed diverter plates g, i coaxial with the gears and providing tracks with the aid of star plates k and guide plates m, n through which two series of bobbin carriers pass in opposite circular directions. The horn gears b have five notches, the inner circle of gears e having three notches. Each of the horn gears has a passage w, and each star plate a passage x, through which a wire can be passed to enable the machine to produce multi-core electric cable. The bobbin carriers comprise a bobbin-carrying spindle o which is prevented from rotating when a pawl p engages a ratchet wheel r. The yarn passes from a bobbin o<SP>1</SP> through a guide 20, under a movable guide pulley 11 movable on a spindle 13, over a fixed pulley 12, under another pulley movable with pulley 11 and thence through a guide v to the collecting head. When the yarn is under sufficient tension the movable pulleys rise up spindle 13 and the pawl p is removed from the ratchet wheel r. The base of the carrier has a groove t into which the edges of the track-forming plates fit. In a second embodiment three concentric circles of horn gears are employed, having respectively 5, 4 and 3 notches per gear, and there are four series of bobbin carriers, two series travelling in each direction-round the machine.
Patent GB-1303668-A (GB)
IPC: A01F12/44
Filed: 1970-03-24
Abstract: 1303668 Threshing and separating machines MASSEY-FERGUSON INDUSTRIES Ltd 24 March 1970 [2 April 1969] 14289/70 Heading A1F A grain crop threshing and separating apparatus provides three stages of grain separation: one a rotatable threshing cylinder 46 and an open grate concave 48, separates the bulk of the grain from the cut crop material, two, a conveyor 60 positioned to receive crop material including unseparated grain discharged from the cylinder and concave, passes on material across a space between it and a reciprocatable member in the form of straw walkers 76 so that grain can fall away, and three, the reciprocatable member tosses the crop material upwards and towards the discharge end of the apparatus and grain falls through. The movement of material is assisted by beaters 44, 58, 82 and excessive movement is restricted by curtains 70, 84. Grain falling from concave 48 and through a screen 63 in the upper run support 62 of the conveyor 60 is conveyed by a row of side-by-side augers 94, Fig. 3, to a main grain pan 106. Grain from straw walkers 76 and from the end of conveyor 60 travels down a reciprocated pan 108 to pan 106 whence it passes into a cleaning shaker shoe comprising screens 124 through which air from fan 132 is blown. Cleaned grain is collected by auger 134 and transported to a grain tank, while tailings and unthreshed heads are returned by auger 140 and an elevator (not shown) to the threshing cylinder. Conveyor 60 may have scraper members and may be tensioned by mechanisms 66. A fan 74 may partially clean the grain falling from the end of conveyor 60 and threshed straw passes from the straw walkers out of the machine where it is spread on the ground by a "bat" device (86) (Fig. 1, not shown).
Patent GB-742497-A (GB)
Title: Improvements in or relating to process for producing glutamic acid
Filed: 1953-05-21
Abstract: Glutamic acid is prepared by a process comprising the hydrolysis of Steffen's filtrate and recovery of the glutamic acid from the resulting hydrolysate, wherein, prior to the hydrolysis, a major proportion of the calcium present in the Steffen's filtrate is precipitated with an alkali metal (including ammonium) carbonate, bicarbonate, phosphate, bisulphite or sulphite and separating the resultant precipitate from the filtrate.  This purification facilitates the ultimate recovery of glutamic acid. The precipitating agent may be used in solid form or aqueous solution.  After removal of the precipitated calcium, e.g. by filtration, the Steffen's filtrate may be hydrolysed by alkali or acid, e.g. sodium carbonate, sulphuric acid or hydrochloric acid. The hydrolysate is then treated to remove inorganic salts and glutamic acid recovered by crystallization.  An example is given.
Patent GB-570296-A (GB)
Title: Improvements in or relating to fire-escapes
IPC: E06C9/14
Filed: 1943-09-01
Abstract: 570,296. Ladders. EDWARDS, D. W. S. Sept. 1, 1943, No. 14299. [Class 20 (ii)] [Also in Group XXI] A fire escape comprises a number of hinged ladder sections 10 attached to a trolley at the upper end, the trolley being mounted on a wheeled carriage 13 supported on overhead rails 15 in an upper storey of the building so as to be movable from the inside of the room to the window. The hinged ladder sections 10 are folded alternately forwards and backwards in collapsing by pulling upon a cable 17 which is secured at its lower end to the bottom section and which passes alternately in front of and behind the successive hinge axes 11 of the sections. Release of the cable permits the ladder to extend. The cable 17 is wound on a hand or power operated drum 18 to which it passes from the top end of the ladder through a swivelling cross-piece 10<a> the angular position of which in relation to the window is adjusted by sliding rods and steering cords 26 which pass around a hand-operated wheel 28. A winding drum 24 and cable 25 are provided to draw the trolley inward from the window A and a wheeled gangway 30, which normally rests in the floor, may be moved to extend outside to facilitate access to the ladder.
Patent GB-514701-A (GB)
Title: Improvements in or relating to signalling systems
IPC: H04B3/20
Filed: 1938-05-13
Abstract: 514,701. Valve relays. TELEFONAKTIEBOLAGET L. M. ERICSSON. May 13, 1938, No. 14308. Convention date, May 13, 1937. [Class 40 (v)] - A signalling system has a circuit arrangement for restricting to a predetermined limit the potential of one polarity applied to a control electrode of an electron or thermionic tube, the control electrode being connected to a point in a direct current supply through a source of variable potential having a certain finite internal resistance, and to 'another point on the said supply through a rectifier, the potential of the latter point being equal to the desired predetermined limit. Fig. 1 shows a signal receiver for voice frequencies wherein a biassed relay A in the anode circuit of a thermionic relay E is operated only when the anode current reaches a predetermined value. Input signals applied to the grid of the valve E are amplified and passed through accepter and rejecter circuits P, S, the voltages across which are rectified and injected by resistances r<1>, r in the grid bias circuit of the valve E in series with the bias source V2. Input potentials of signal frequency after rectification, inject a positive potential in the grid circuit which opens the valve E and operates the relay A. Signals of other frequency operate through the circuit S, rectifier G and resistance r to inject a negative potential in the grid circuit to block the valve E. To secure reliable operation of the relay A for all amplitudes of signal, the signals are amplified considerably and excess voltages are prevented from overloading the valve E by connecting a further source of negative potential-V1, in series with a rectifier K to the grid bias circuit so that all potentials more positive than -V1, are short circuited through the rectifier K and source -V1. The rectifier K is connected to offer lowest impedance to currents flowing to the source -V1. As applied to an audio-frequency amplifier-for a loud-speaking telephone, Fig. 2, the input to an amplifier E from terminals a is also amplified at V and rectified before application to a resistance R in series with a source -V2 of negative grid bias potential. The amplifier V has a constant output and a positive potential is injected in the grid circuit when signals occur. Owing to the condenser C1 in the grid circuit a time lag occurs before the valve E becomes, operative, so that part of the signal is lost. Accordingly, the amplification at V is made considerable and a source of negative potential -V1 is connected to the grid bias circuit through a rectifier K as in Fig. 1 so that the bias voltage rises quickly to, but does not exceed, the value -V1 from the value -V2 thereby rendering the valve E operative without time lag. If it is desired to keep the potentials above a value fixed by the battery -V1 the rectifier K is reversed.
Patent GB-528725-A (GB)
Title: Improvements in or relating to gas- or vapour-filled electric discharge devices
IPC: H01J13/34
Filed: 1939-05-13
Abstract: 528,725. Converting. PATENTVERWERTUNGS.-GES. HERMES. May 13, 1939, No. 14383. Convention date, May 14, 1938. [Class 38 (ii)] [Also in Group XL] In a gas or vapour filled electric discharge devices having liquid, e.g., mercury cathodes in which the instant of ignition is controlled by a control electrode within wide limits, an inductive impedance is connected in series with the cathode and the resultant voltage drop across this impedance is transmitted directly or indirectly to an auxiliary electrode in the neighbourhood of the cathode for preventing quenching of the discharge immediately following the ignition thereof. The discharge device shown in Fig. 1 comprises the vessel 1 with mercury cathode 2, anode 3, control electrode 7 and a series of electrodes 4 connected to a capacitator potential divider 5 for producing a desired potential distribution between the anode and cathode. The current supply source is shown at 12, load at 13, and resistances 6 for damping oscillations. The excitation anode 8 is connected through a resistance 9, battery 10 and inductance 11 in the cathode. In modifications the voltage surge occurring on initiation of the discharge .may be transmitted to a second auxiliary electrode in the neighbourhood of the cathode and connected in series with a resistance which may be adjusted relatively to the resistance 9, and the circuit of this second auxiliary electrode may be inductively coupled to the inductance 11 while the anode 8 is connected directly to the cathode. Fig. 4 shows an arrangement in which the auxiliary electrode is used to take over a part of the discharge surge on the initiation of the discharge, and consists of a mercury pool 17 connected through a resistance 18 to the end of the inductance 11. The resistance 18 is adjusted so that the discharge flowing to the exciter anode 8 is from the cathode. A suitably dimensioned resistance 21 may be connected in parallel with the inductance 11 to damp oscillations therein. To facilitate the change over of the discharge to the electrode 17, an ignition spot may be produced by an ignition pin dipping therein and functioning in dependence on the drop in voltage across the cathode inductance.
Patent GB-679947-A (GB)
Title: Improvements in bearings
IPC: C25D3/56
Filed: 1950-06-09
Abstract: An electrodeposited bearing alloy comprises 8-12 per cent tin, 2-3 per cent copper, antimony or arsenic, and the balance lead.  A 10 per cent tin, 3 per cent copper content is preferred. Specifications 577,335 and 624,401, [both in Group XXXIV], are referred to.
Patent GB-331043-A (GB)
Title: Improvements in or relating to incandescent cathode x-ray tubes
IPC: H01J35/02
Filed: 1929-05-09
Abstract: 331,043. Frye, J. D., and Andrews, C. O. R. May 9, 1929. R÷ntgen-ray tubes.- The face of the anticathode 14, Fig. 1, is inclined at an angle to the incandescent cathode 16 and a focussing mask 15 between the electrodes 14, 16 has an elongated aperture 17 converging as in Fig. 3 towards that end at which the distance between the electrodes 14, 16 is greater. The spreading tendency due to the weakened field at this end is thus counteracted and a focal line of even width produced. The anticathode comprises a tungsten plate sunk in a copper pillar 13 carried by a reentrant tube 11, the plate being oval to improve the conduction of heat from it. A metal envelope 18 within the envelope 10 of the tube is supported from either of the parts 13, 15 to produce an intense field in front of the anticathode and may be at the potential of the cathode or anticathode. The envelope 18 has a window 19 for the rays and may cut off X-rays at other points. The filament 16 is heated by alternating current and has one end connected to the metal part 15. The tube may be filled with argon, neon, nitrogen, helium, or hydrogen, or with a mixture of two or more of these gases, at a pressure above 0.0006 mm. The Provisional Specification refers to Specification 228,592 and to tubes projecting R÷ntgen-rays axially.
Patent GB-871888-A (GB)
Title: Improvements in or relating to pipe joints
IPC: F16L37/248
Filed: 1960-04-26
Abstract: 871,888. Pipe joints. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. April 26, 1960 [April 28, 1959], No. 14590/60. Class 99(1). In a pipe joint comprising a housing 11 slidably engaging within a cap 17, the housing has one or more fluid passages 12, 13 provided with keyways 31, 32 the bottoms of which extend a short distance circumferentially to form pipe locking means, and the cap 17 has one or more pipes 21, 22 movable therein and provided with packing rings 23, 24 for sealing engagement in the passages 12, 13, and with pieces 27, 28 to engage in the pipe keyways 31, 32. Arms 35, 36 extend longitudiually from the cap 17 outside the housing 11, slots 37, 38 being provided in the arms and cap for guiding the cap slidably between an engaged and a disengaged position with respect to the housing, and pivot pins 40, 41 being secured to the housing 11 and extending through the slots 37, 38 whereby the cap 17 can be pivoted from the disengaged position out of alignment with the housing 11. The slots 37, 38 are provided with horizontal portions having notches 42 which engage the pins 40, 41 for locking the cap 17 on the housing 11. Alternatively, the slots are formed in the housing 11 and the pins are secured internally at the ends of the arms 35, 36.
Patent GB-738695-A (GB)
Title: Improvements in and relating to writing instruments
Inventor: WHITEHEAD JOHN SCHOFIELD
IPC: B43K24/02
Filed: 1953-05-26
Abstract: 738,695. Reservoir pens. COMPANIA URUGUAYA DE FOMENTO INDUSTRIAL SOC. ANON. May 26, 1954 [May 26, 1953], No. 14649/53. Class 146(3). In a retractable ballpoint pen a plug 15 has a part 17 press-fitted into the end of the reservoir 7, and the writing unit is projected from the barrel into writing position, against the action of a coil spring 13, by means of a pocket clip 6 which is firmly attached to the plug 15 by a rivet 19. A neck 27 of the clip 6 slides in a slot 23 in a cap 11 having screw-threaded engagement with the barrel 1, and can be moved into a transverse part 24 of the slot whereby the writing unit is locked in writing position. The slot 23 extends to the bottom end of the cap, but is closed m its position on the barrel by the top end 22 of the latter which forms an abutment for the neck 27. When the cap 11 is screwed on to the casing, the writing unit and clip 6 are rotated as one unit about the axis of the pen. Specifications 571,698, 573,747 and 629,226 are referred to.
Patent GB-255602-A (GB)
Title: Automatic switch mechanism for the control of wireless receiving sets and like purposes
IPC: H01H67/04
Filed: 1925-06-05
Abstract: 255,602. Gamage, Ltd., A. W., and Parker, J. S. June 5, 1925. Electromagnetic switches. - A switch, for alternately closing and opening a circuit such as that of wireless receiving apparatus, and upon successive momentary closure of another circuit, comprises a barrel 14 rotated step by step through a ratchetwheel 13 thereon and a pawl 11 carried at one end of transverse 10 secured to the end of a lever 5 pivoted at 7 and also carrying an armature 3 adjacent to a double pole electromagnet 2. The winding of the magnet are in circuit with a battery 26 and terminals 30, 31. When this circuit is closed by a remote push button &c. the ratchet 13 is turned one tooth so as to bring one of the metal studs 20 on the barrel into contact with a spring 21 thus completing a circuit from a terminal 18, through wire 17, bearing 16 of the barrel shaft 15, spring 15a pressing on the end of the shaft, the shaft 15, stud 10 and spring 21 to another terminal 19, the terminals 18, 19 being connected in the circuit to be controlled. Opening of the push button allows the armature 3 and pawl 11 to be retracted by a spring attached to an adjustable screw 8 in one end of the lever 5. A further closure of the push button causes the ratchet to be turned another tooth, and as the studs 20 are placed a distance apart corresponding to two teeth of the ratchet, the circuit between terminals 18, 19 is opened. The spring 21 may have a projection adapted to enter depressions in the barrel 14 and the studs 20 so as to prevent accidental rotation of the barrel. Exact positioning of the barrel upon each operation of the lever 5 is assured by a finger 23 adjustably secured to one end of the bar 10 engaging a ratchet 25 on the barrel 14, this ratchet being oppositely set to the ratchet 13. The apparatus is mounted on a panel 1 and is enclosed in a box 27 in the lower part of which is located the battery 26.
Patent GB-1187417-A (GB)
Title: Improvements in and relating to Gas-Separators
Inventor: LLEWELLYN PETER MERLYN
IPC: G01N30/72
Filed: 1968-03-27
Abstract: 1,187,417. Separating gases by diffusion. VARIAN ASSOCIATES. 27 March, 1968 [27 March, 1967], No. 14805/68. Addition to 1109160. Heading B1L. In a gas sampling arrangement as described in Specification 1,109,160, and in which two similar membranes are used in series in the gas line to the mass spectrometer, the space between the two membranes is partially evacuated using a vacuum pump, a valve being connected in the line to the pump, so as to provide a control over the quantity of gases passing to the analyser. In this way the ratio of gases to be analysed passing to the mass spectrometer to carrier gas present in the gas flow from the chromatograph can be varied so that large peaks on the chromatograph output can be effectively reduced by cutting down the ratio of gases to analysed passing to the spectrometer so avoiding swamping of the spectrometer which may hinder subsequent analysis, whilst also allowing the detection of smaller peaks from the chromatograph. The valve is manually operated in accordance with the chromatograph output and comprises a magnetically displaceable valve member.
Patent GB-1492655-A (GB)
Title: Weighing mechanism
IPC: G01G3/02
Filed: 1975-04-10
Abstract: 1492655 Linkwork CARL SCHENCK AG 10 April 1975 [5 Oct 1974] 14836/75 Heading F2K [Also in Division G1] In a spring balance the extension of a spring 6 is transmitted to an indicator by a transmission comprising two Watt straight linkages 13, 14, 15, and 16, 17, 30 respectively, an arm 14, 16 of each linkage being provided by a common lever and the point 11 at which the extension of the spring is applied to the linkage member 15 being adjustable laterally.
Patent GB-340464-A (GB)
IPC: F16K15/20
Filed: 1930-05-14
Abstract: 340,464. Fluid-actuated valves. STADLER, F. X., 18, Lothstrasse, Munich, Germany. May 14, 1930, No. 14849. Convention date, May 14, 1929. [Class 135.] Safety valves.-A relief valve combined with an air inlet valve e.g. a tyre inflating valve has a valve member d supported by a spring or pivoted arm f and loaded by a pair of springs acting on the ends of a yoke g having a central pin engaging a recess in the valve member. The springs are housed in holes in the valve casing and are anchored to a bridge adjustably secured to the casing by a screw o. The valve is protected by an outer sleeve r and the outlet is provided with a gauge strainer s. The air inlet valve is inserted in the outer end t of the casing in the usual way.
Patent GB-859944-A (GB)
Title: Improvements relating to magnetic core storage devices
Inventor: KRAMSKOY CHARLES MARK
IPC: G06F11/00
Filed: 1956-05-12
Abstract: 859,944. Circuits of bi-stable magnetic elements. ELECTRIC & MUSICAL INDUSTRIES Ltd. May 13, 1957 [May 12, 1956], No. 14854/56. Class 40 (9). In a system in which bi-directional magnetizing currents are fed via transformers to the row (column) conductors of a magnetic core matrix, the current waveform so applied is compared with a standard waveform, and an "error signal dependant upon the difference between the compared waveforms is used to counteract any departure from standard in the applied waveform. As shown, current generators G1, G2 ... Gn feed bi-directional currents of rectangular waveform via transformers T1 T2 ... Tn to the row conductors X1, X2 ... Xn of a two-dimensional matrix, the cores of which are not shown. When a current flows in one of the conductors X1, X2 . . . Xn the voltage waveform set up across the respective resistor R1, R2 ... Rn, which corresponds to the current waveform, is applied to a comparator 1 and is there compared with a standard voltage waveform derived from generator 2. The difference, if any, is amplified at 3 and is fed as a current waveform to the conductor 4 which threads all the cores of the matrix. This current compensates for any out-of-balance current in the conductor, say XI, to which the initial current waveform was fed and is sufficiently small to be ineffective on the other cores of the matrix. In a modification (Fig. 2, not shown) the error current is not fed to the conductor 4 but to an additional winding of each of the transformers T1, T2 ... Tn, all such windings being connected in series. In each ease known arrangements are employed to gate the voltage waveform from the correct resistor, say R1, to the comparator under control of clock pulses and the comparator is assumed to include the necessary gating circuits.
Patent GB-673472-A (GB)
Title: Improvements in or relating to building slabs
IPC: E04B2/02
Filed: 1948-09-13
Abstract: 673,472. Building-blocks. BALIN, E. Sept. 13, 1948 [Sept. 16, 1947], No. 14861/49. Divided out of 673,467. Class 87(i). In a building - block having grooves 2 on all its faces whereby it may be broken into two or more parts (a) all the parts are equal and each provided with a recess 1 in one face or (b) one part is larger than the remainder for use adjacent a window frame and the recesses are omitted.