baber/WOPTO huggingface dataset:
Patent GB-1402561-A (GB)
Title: Measured-value converter circuit
IPC: G01R17/06
Filed: 1972-08-10
Abstract: 1402561 Bridge arrangement for remote twowire telemetry system DANFOSS AS 10 Aug 1972 37461/72 Heading G1U The remote unit of a two-wire telemetry system of the type in which the current flowing to and from the remote unit comprises the sum of a datum current (about 4mA) and a signal current (from 0 to 16mA), includes a resistive bridge R 3 , R 4 , R 1 ; R m , R2, Fig. 8 the resistance R m  varying in accordance with a parameter being measured, and two distinct control circuits the first of which maintains the current leaving the bottom of the bridge via resistors R 1  and R 2  constant at I 1 , by comparing T 13 , T 1 4 the sum of the voltages across these resistors with a Zener Z 1  reference voltage and adjusting an impedance T 1 , T2 accordingly, and the second of which uses the amplified T3, T4 voltage across the diagonal of the bridge to control, via transistors T 5 , T 7 , T 8 , a current I 2 , tapped off from the fixed arm of the bridge so that the diagonal voltage is maintained substantially constant. The current I 2  is then proportional to the parameter being measured, and is added to the datum current Ii to form the current drawn from, and returned to, the central station. Clearly other parts of the unit, for example the Zener Z 1  reference voltage, consume current, but these amounts can be kept very low (about 0.3mA). In a modification the datum current comparator Ti 3, T 14  is replaced by a single stage T 12 , Fig. 5, and coupling resistors R 21 , R 22  are omitted. Further, the bridge diagonal-voltage balancing circuit is augmented by an additional stage T9, T 10 , so that the bridge diagonal voltage can still be maintained substantially zero even when the parameter being measured causes the resistance R m  to rise (rather than to fall from a datum level as was tacitly assumed above), though in this case, although the bridge is properly balanced, no signal current I 2  flows. The bridge may include complementary strain gauges in both arms Fig. 6, (not shown).
Patent GB-842629-A (GB)
Title: Improvements in and relating to shuttering for use in casting concrete
Inventor: JOHANSSON ROLF GUSTAF
IPC: E04G11/22
Filed: 1956-12-07
Abstract: 842,629. Shuttering for casting walls. BYGGFORBATTRING A. B., and PRODUKTIONSMETODER A. B. Dec. 7, 1956, No. 37497/56. Class 20(2) Shuttering for casting concrete comprises flexible panels 1 having their adjacent edges connected together by pairs of upright members 3, 9 between which the edges of the shuttering panels are clamped the member 9 being shaped so as to be flush with the moulding surface of the shuttering. The edges of the panels 1 have flanges 1a bent to fit between the angle section member 3 and the triangular section member 9 and the bars 3 are connected to walings 2 by brackets 4. Vertical stiffening bars 31 are similarly connected to the walings 2 but merely engage the panels 1. The shape of the walings 2 determines the shape of the shuttering in the horizontal direction, e.g. the walings may be curved. The shuttering for both sides of a wall is supported by yokes 6 connected to the walings 2 so that the shuttering can be slid over a cast section to cast a further section.
Patent GB-959390-A (GB)
Title: Data latching circuits
IPC: H03K3/037
Filed: 1960-11-02
Abstract: 959,390. Transistor logic circuits. INTERNATIONAL BUSINESS MACHINES CORPORATION. Nov. 2, 1960 [Feb. 3, 1960], No. 37727/60. Heading H3T. In a latching circuit an AND circuit 10 has its output connected to one input of an OR circuit 12 and to one input of an AND circuit 13; the output of the OR circuit is connected to an output terminal O and to one input of an AND circuit 11; the output of the AND circuit 11 is connected to another input of the OR circuit 12; the output of the AND circuit 13 is connected to one input of the AND circuit 10; an inverter 14 is connected to another input of the AND circuit 11; a first input signal X is applied to the other input of AND circuit 10; and a second input signal G is applied to the input of the inverter 14 and to another input of AND circuit 13. The AND circuit 13 produces an output in response to signals of the opposite polarity from those of the other two AND circuits 10, 11. The circuit is such that an output remains after the data signal X is removed due to the presence of a latching signal G. The individual logic circuits may be of the type described in Specification 872,251. The circuit is employed as a basis for circuits performing other functions. Fig. 3 shows an escapement gate circuit in which an output is produced when G goes negative for the first time, and is terminated when G goes negative for a second time. Fig. 4 shows an " exclusive OR " circuit producing an output Y.#Z=#Y.Z and may be used as a shift circuit. Fig. 5 is a bi-stable circuit producing four outputs, a first antiphase pair which change when the latching signal goes negative, and a second antiphase pair which change when the latching signal goes positive. Fig. 6 shows an arrangement in which the basic circuit of Fig. 3 may be utilized to perform any of several logical functions such as gating a number of inputs into a common output, or gating a common input to a number of outputs.
Patent GB-848486-A (GB)
Title: Production of perchloryl fluoride
IPC: C01B11/24
Filed: 1957-12-04
Abstract: Perchloryl fluoride is prepared by interacting perchloric acid or a perchlorate with fluosulphonic acid at a temperature between 40 DEG C. and the b.p. of the reaction mixture, and withdrawing the gas evolved as the desired product before substantial quantities of by-product gas are formed.  Sodium, potassium, lithium, calcium, and magnesium perchlorates are specified.  The molar ratio of fluosulphonic acid to perchloric acid or perchlorate is preferably at least 6 to 1, and may be, for example, 10 to 1. The reaction mixture may be passed down a steam-heated vertical packed tower at a temperature of 100-135 DEG C. for a retention time of 1-10 minutes. At a reaction temperature of 40 DEG C. the retention time may be 30 minutes.  The product gas may be scrubbed simultaneously or in succession with a neutralising agent and a reducing agent in aqueous solution, e.g. with a solution containing 10-25% of sodium hydroxide and 10-25% of sodium thiosulphate.  The gas may then be successively scrubbed with a 5-10% aqueous sodium hydroxide solution and water, dried by passage over activated alumina or solid sodium hydroxide, and liquefied by compression.  Reaction may be continued in the residual liquid at a temperature between 40 DEG C. and the b.p. thereof until evolution of by-product gas, which comprises chlorine, oxygen, and sulphur dioxide, has ceased.  The by-product gas may be vented after scrubbing with aqueous caustic soda solution.  The residual fluosulphonic acid may then be distilled off and recycled to the process.
Patent GB-1366352-A (GB)
Title: Resolution of dl-cysteine
Filed: 1971-08-12
Abstract: 1366352 Resolution of DL-cysteine DIAMALTAG 12 Aug 1971 [17 Sept 1970] 37862/71 Heading C2C D- or L-cysteine is obtained by reacting an optically active copper-complex salt, notionally produced by the reaction of D- or L-2-guanidino-4-carboxy-1,3-thiazoline with cupric ions and with an optically active form of an optically active organic acid (e.g. aspartic acid), with cyanide (e.g. KCN) to produce the corresponding guanidino-thiazoline-carboxylic acid; rearranging the latter in aqueous acid (e.g. HCl) with ring-opening, to give the corresponding S-guanidino-carbonyl-cysteine; and splitting the latter in aqueous alkali (e.g. NaOH) to give the corresponding cysteine. The D- or L-cysteine produced may be oxidized (e.g. with H 2 O 2 ) to cystine, the latter isolated and reduced back to cysteine as and when required. The copper-complex salt starting material is generally obtained from DL-cysteine by reaction with dicyandiamide to form DL-2- guanidino - 4 - carboxy - 1,3 - thiazoline, reaction of the latter with cupric ions and with an optically active form of the optically active organic acid to produce a mixture of two diastereoisomeric copper - complex salts and separation of this mixture of salts by virtue of their solubility differences in an aqueous medium.  N-guanidino-carbonyl-D- or -L-cysteine is obtained as a by-product during cleavage of the S-compound to give cysteine.
Patent GB-523317-A (GB)
Title: Improvements in or relating to apparatus for the coating of surfaces with liquids by spraying
Filed: 1938-12-30
Abstract: 523,317. Coating surfaces by spraying. SCHWARTZ, F. F., and CHAVANNES, M. A. Dec. 30, 1938, No. 37895. Convention date, Jan. 4, 1938. [Class 15 (i)] The major part of the wall surface of a space of precipitation chamber wherein particles of liquid such as rubber latex which are not immediately fixed by a spraying apparatus on a fabric or other surface to be covered may deposit, is formed by the fabric or other surface to reduce loss of liquid. The fabric to be coated may be guided over rollers 1 ... 5 to form a tunnel portion T between opposing runs of the fabric in which undeposited particles of liquid from spraying devices p in a chamber P and which are drawn into the tunnel by a draught of air or gas produced through opening j and a chimney j<SP>1</SP>, may fall. A series of ascending and horizontal portions of fabric may form the tunnel T if desired. From the tunnel T, the fabric passes over rollers 6, 7 to a drier S through openings u in the base of which hot air may be circulated by a fan V to a chimney v. Specification 485,607 is referred to.
Patent GB-1202573-A (GB)
Title: Methods of depositing thin films on substrates by means of gas plasmas
Inventor: ANDROSHUK ALEX
IPC: C23C16/503
Filed: 1967-08-17
Abstract: 1,202,573. Depositing thin films. WESTERN ELECTRIC CO. Inc. 17 Aug., 1967 [1 Sept., 1966; 28 April, 1967], No. 37930/67. Heading C1A. [Also in Divisions C7 and H1] A thin film of a metal or silicon compound is deposited on a heated substrate by introducing at least two gaseous reactants into a chamber containing the substrate, establishing a plasma in the chamber by means of a D.C. discharge between a pair of electrodes, flowing an inert gas around one or both of the electrodes, and adjusting the flow rates of the reactant and inert gases so that a static interface exists between them. The pressure should be 0À1-10 Torr and the saturation current density of the plasma 0À1-100 ma./cm.<SP>2</SP>. The substrate may be of Si, GaAs, or quartz, and may be heated to 300-800 C. A magnet may be used to deflect the plasma on to the substrate. The inert gas may be Ar, He, N 2 , CO 2 , or air. The apparatus used is that disclosed in Specification 1,202,572. A Si compound may be deposited from SiH 4 , Si 2 H 6 , Si 3 H 8 , SiBr 4 , SiCl 4 , SiHBr 3 , SiHCl 3 , Si 6 O 3 H 6 , or (SiH3) 3 N. SiO 2  is formed using O 2 , Si 3 N 4  using N 2 , NH3, or amines, SiC using CH 4 , and mixed oxide-nitride using O 2  + N 2 . A Si 3 N 4  film may be grown over a SiO 2  film using first O 2  then N 2 . The formation of oxides, carbides, nitrides, and borides in general, and compounds of Al, Ta, and Ge, is also referred to.
Patent GB-1161494-A (GB)
Title: Cigarette and Paper Wrapper therefor
Inventor: LEBERT HERBERT ARTHUR
IPC: A24D1/02
Filed: 1966-08-24
Abstract: 1,161,494. Paper. H. A. LEBERT. 24 Aug., 1966, No. 37933/66. Heading D2B. [Also in Division A2] Paper for a cigarette wraper is treated with ammonium nitrate or an equivalent oxidizing agent all over or in selected areas.
Patent GB-1359684-A (GB)
Title: Casting of ceramic articles
IPC: B28B1/26
Filed: 1972-08-10
Abstract: 1359684 Slip casting BRITISH CERAMIC RESEARCH ASSOCIATION 10 Aug 1972 [13 Aug 1971] 38049/71 Heading B5A A method of casting a ceramic article 18, e.g. sanitary ware comprises forcing liquids slip into a mould cavity defined by pervious male 16 and female 12 parts, holding the filled cavity under pressure until the required thickness of east is obtained, draining off surplus slip, applying pressure to either the male or female part to release the casting therefrom an applying suction to the other part to retain the casting thereon, separating the male and female parts and shutting off the suction from the other part so that the casting 18 is released therefrom. The casting 18 may be collected in a saddle 30. Compressed air may be fed through the male and female parts during casting to purge the filtrate therefrom. The surplus slip may be expelled through a drain orifice using pressure air. Following the removal of the surplus slip the orifice is shut so that the mould cavity may be pressurized again to force further water out of the casting. The mould may be tilted so that the surplus slip is directed to a drain orifice positioned at the lowest point of the mould. A plurality of moulds (Figs. 2-5) may be filled simultaneously, opened sequentially or simultaneously and release the castings sequentially or simultaneously. During casting the mould halves may be held together by clamps 19 or locking bars (10, Fig. 2) and tapered pegs (40a, Fig. 2). The mould part, e.g. 16 retaining the casting 18 may be pivoted by a piston 26a to carry the casting towards the saddle 30. The latter may be supported on platform (48, Fig. 2) movable along a guideway (50) or on a scissor lift 32 which is lowered when a sensor detects that the casting 18 has been deposited. The casting is then removed manually or by a conveyer (68, Fig. 4). The mould part(s) may be mounted on carriages, e.g. 12a (54, Figs. 2, 4) actuated by a piston(s), e.g. 14a (58, Figs. 2-5). The pistons 14a, 26a (58) may be hydraulically or pneumatically actuated. The male and female mould parts which may be mounted in respective metal mould bores may be formed of a sand/resin mixture.
Patent GB-994086-A (GB)
Title: Improvements in or relating to radio frequency filters
Inventor: TIBBS CHRISTOPHER EVAN MUNDELL
IPC: H05K9/00
Filed: 1962-10-09
Abstract: 994,086. Valve supply circuits; filter networks. RADYNE Ltd. Aug. 28, 1963 [Oct. 9, 1962], No. 38217/62. Headings H3U and H3W. A supply lead 21 for high-frequency apparatus, e.g. the filament lead of an oscillator valve, is passed through a screening compartment 10 and escape of high-frequency energy is prevented by connecting the lead to plates 11, 13 lying respectivley inside and outside the screening compartment 10 and insulated from the screening compartment by layers 12, 14 of dielectric material, e.g. polythene or silicone rubber. Connection between the lead 21 and the outer plate 13 is made via a screening can 18 for a choke 17 connected in series with the lead. The arrangement proceeds, in effect, a low-pass # network. The direct connection 16 between the lead and the inner plate 11 may be replaced by a further inwardly-extending screening can containing a further choke. The choke or chokes may comprise ferrite tubes or beads threaded over the lead. Specification 38216/62 is referred to.
Patent GB-1067648-A (GB)
Title: Improvements in or relating to a conveying and lowering combination
IPC: B65G69/16
Filed: 1964-09-21
Abstract: 1,067,648. Endless conveyers; loading. W. J. JENKINS & CO. Ltd. Sept. 21, 1964 No. 38509/64. Headings B8A and B8E. Apparatus for loading railway wagons or the like comprises an endless belt conveyer 4 having its frame in two parts 1, 2, pivotally joined at 3 and a vertically disposed loader 14 pivoted at 15 to the free end of the frame 2. An arcuate guide 12 secured to the frame 2 movably engages a roller 13 on an extension 7 of the frame 1. The free end of the extension 7 carries a mechanism 6 for propelling the frames 1, 2, on wheels, longitudinally thereof to effect a straight line vertical motion of the point 15 when the frame 2 is arcuately lifted. The lifting is accomplished by a winch 8 also mounted on the extension 7. The loader 14 comprises an endless belt 17 having a plurality of projections 18 and moving about two rollers 16 within an open-ended chamber 19. A switch operated by a probe 22 is carried by the loader and causes the motor driving the belt 17 and/or the belt 4 to start when the probe contacts the base of the wagon and a probe 23 upon touching the increasing load in the wagon causes the winch 8 to lift the loader.
Patent GB-1326568-A (GB)
Title: Method of seismic exploration
IPC: G01V1/28
Filed: 1970-08-10
Abstract: 1326568 Seismic prospecting WESTERN GEOPHYSICAL CO OF AMERICA 10 Aug 1970 [27 Aug 1969] 38510/70 Heading H4D Values of an intrinsic property of a subterranean zone, computed from the results of seismic surface exploration of the zone, are displayed as values of a colour property imparted to a display area and are distributed in the area as a function of horizontal and vertical dimensions in the zone. In the Fig. 1 embodiment common depth point seismic reflection records are processed by computer 22 to derive signals on lines 26, 26a ... 26n representing different respective intrinsic and extrinsic properties of the earth strata. The intrinsic properties may include the acoustic velocity and the acoustic attenuation coefficient for compressional or shear waves, Poisson's  ratio, acoustic impedance, elasticity (bulk modulus), and density. The extrinsic properties depend on the shape and orientation of the strata and are delineated by amplitude contrasts in the seismic reflection records. One intrinsic characteristic signal (ICS), on line 26, is fed via a gating and comparator network 32 and amplifier 34 to intensity-modulate the beam of a cathode-ray tube (CRT) 36 according to the ICS magnitude, the beam being horizontally swept by oscillator 38 and vertically deflected in dependence on the ICS magnitude by signals on lines 62, 64, 66. The CRT has different coloured phosphor stripes 44, 46, 48 on its face-plate, so that the intensity and colour of the CRT display trace are both controlled by the ICS. The trace is recorded on colour film 52 on a drum 50. Further traces are recorded by indexing the CRT along rail 37. In a modification, two or more of the ICS and extrinsic characteristic signals (ECS) may be recorded simultaneously on film 52, each signal being associated with a particular colour the saturation of which depends on a parameter of the signal. In further modifications these signals may be (a) separately recorded on individual transparent coloured sheets or films (each signal being assigned a different primary colour) for projection, in exact or almost exact superimposition, on to a screen, (b) arranged to intensity-modulate respective coloured light beams in mirror galvanometers, the beams being brought to a common focus on a colour film (Fig. 2, not shown) or (c) arranged to control the feed of coloured powders from vibrating nozzles on to a paper recording medium.
Patent GB-1118948-A (GB)
Title: Improvements relating to the formation of sweat soldered joints between telescoped members
Inventor: RAYNES BERTRAM CHESTER
IPC: B23K3/06
Filed: 1966-08-30
Abstract: 1,118,948. Soldering. NIBCO Inc. 30 Aug., 1966, No. 38648/66. Heading B3R. In soldering two telescoped members a length of solder is wrapped around the inner member to abut the end of the outer member, a length of adhesive tape is wrapped around the solder and members and heat is applied to melt the solder. To solder a copper sleeve 18, Fig. 1, to copper pipes 16, 17, the sleeve is telescoped on the pipes leaving capillary gaps 20 and a length of solder 22 of 50-50 lead-tin or 95-5 tinantimony is wrapped around each pipe to abut the end of the sleeve. With flux applied a length of adhesive tape 26 is wrapped tightly around the pipe sleeve and solder at each end of the sleeve to adhere thereto. A torch is applied to the pipe and sleeve on each side of the tape and the solder melted to flow into the gaps 20. The operator may see the flow of solder through the tape which may be left in place or removed. The lengths of solder and tape may be wrapped separately but are preferably applied as a unit, the solder adhering to the adhesive and spaced from the edge of the tape by adhesive areas. In the latter case the length of solder may extend from one end of the length of tape to a position spaced from the other end or may be spaced from both ends. The tape 26a, Fig. 7 and solder 22a may be covered with a flexible protective film 35, e.g. waxed or plastic coated paper which may be peeled off the assembly. Alternatively a roll of adhesive tape 41, Fig. 8, has lengths of solder 22b adhered thereto with desired lengths of tape indicated by printed or pre-scored lines or perforations. The tape is preferably substantially transparent, non-combustible and undergoes a visible change, e.g. becomes scorched or changes colour when the soldering temperature is reached and may shrink on heating. The tape may be of fluorocarbon resins or vinylidene chlorides preferably reinforced by fibre glass and the adhesive may be a pressure sensitive silicone adhesive.
Patent GB-1237098-A (GB)
Title: Improved braking unit
Inventor: MCCARTHY RICHARD HARRY
IPC: F16D55/00
Filed: 1968-08-13
Abstract: 1,237,098. Electromagnetically-released disc brakes. STEARNS ELECTRIC CORP. 13 Aug., 1968, No. 38746/68. Heading F2E. In a spring-operated, electromagneticallyreleased spot-type disc brake, all the parts except the rotatable disc to be braked, (which disc is slidably keyed to (a) the armature shaft of an electric motor), form a unit which may be secured to the motor casing; at least one reciprocable "caliper" member may be urged into contact with the rotatable disc by a lever pivoted at its top and having, below the pivot, a seat engaged by a compression spring; at the bottom end of the lever the armature of an electromagnet is secured, the electromagnet, when energized, acting in the opposite sense to the spring. As shown, an annular plate 10, forming part of the brake mechanism, is fixed by screws 12 and collars 14 to the shell 16 of an electric motor. To the plate 10, in turn, are fixed posts 24, 26, Fig. 3, on which slides a shallow caliper brake plate 54. Plates 54 and 10 co-operate with a friction disc 22, e.g. of cork, which floats on a hub 20, (square in plan), screwed to the motor shaft 18. The brake operated, when the motor is switched off, by a thrust member 52 carried by a lever 50, Fig. 5, pivoted near its top on a pintle 40 engaging ears 38, Fig. 3, of a frame 30; the lever is urged counter clockwise, as seen in Fig. 1, by a spring 56 engaging the inside of frame 30 and a seat 60, Fig. 5, on the lever. The frame 30 also is supported on the posts 24, 26 abutting against enlarged portions 32 of them. The brake is released by energization of an electromagnet 66 (preferably in circuit with the motor), mounted on the frame 30 and having its armature 68 connected to the lower end of the lever 50, Fig. 1. Optionally, to release the brake and hold it released, a hand lever 70 is mounted on the frame 30 and biased in a clockwise direction, as seen in Fig. 1, by a spring 76; the lever has a laterally-directed pin 78. When the lever is pivoted counter clockwise, the pin 78 first encounters the bevelled surface 74 of a hook 80 on the lever 50, Fig. 1, to cam the lever 50 to brake-release position, and thereafter the pin 78 lodges in a notch 82 to hold the brake released. In Fig. 6 (not shown), a further disc 22 and brake plate 54 are provided, while in Figs. 7 and 8 (not shown) the discs 22 are metallic, and the brake plates 54 and annular plate 10 have anti-friction pads secured to them.