baber/WOPTO huggingface dataset:
Patent GB-1351313-A (GB)
Title: Automatic error detecting arrangement for displacement measuring  systems
IPC: H03M1/00
Filed: 1972-01-28
Abstract: 1351313 Detecting errors in scale reading SOC D'OPTIQUE PRECISION ELECTRONIQUE ET MECANIQUE 28 Jan 1972 [29 Jan 1971] 4116/72 Heading G4H Apparatus for detecting errors in the reading of a displacement encoding scale comprises a scale sensed at a-d to give a 4-bit signal indicative of 8 positions between successive graduations, which pattern is applied to a first device to provide an output on 1 of 8 leads and thence to a second device to provide an output on 1 of 2 leads indicative of the direction of movement of the scale, these outputs being counted and displayed at 5, the direction of count being controlled both by the second device and by devices 41, 42 which detect on which side of an arbitrary zero of the scale the heads are situated, the device 41 giving either a "1" or "0" output, the signals CL from the sensors also being fed to a transcoder 6 for application to one side of a subtractor 71 for digital subtraction from the bits representing the least significant digit C E  of the count at 5, the absolute value of the difference being applied to a comparator 81 together with the value of the difference at the start of operations which is stored at 9, an alarm 10 being activated if the differences become non-identical. In this example the counter uses binary coded digits to base 8 and the transcoder 6 has a similarly coded output. In order that a false output should be prevented when the counter passes through the zero of the scale when, e.g. its displayed output will go numerically to 1 instead of to 9, the output of the device 41 is fed to a logic device 51 comprising equivalence circuits, the other inputs of the gates being the bits of the least significant digit of the counter 5. According to the output at 41 the input at 51 is either passed unchanged to the subtractor 71 or each bit is inverted and a "1" is added at 52; it may be shown that this resulting number is the complement in base 8 of the input at 51, and this is then passed to the subtractor 71. The storage device 9 comprises flip-flop circuits which read in the input only when the counter 5 is reset by buttons 11, 12 at the start of operations. Other embodiments are described with 5 sensors and a counter having a base 10, or with 1 or 2 sensors.
Patent GB-785270-A (GB)
Title: Improvements in or relating to amide bases and salts thereof
IPC: C07D295/15
Filed: 1956-02-09
Abstract: The invention comprises compounds of the general formula R2NCH2CONH(CH2)nNHCOCH2NR2, wherein R2N represents a piperidino or pyrrolidino radical, and n is an integer from 2 to 6, and acid addition salts thereof, and the preparation thereof by reacting chloroacetyl chloride with the required alkylenediamine to form a bis chloroacetyl alkylenediamine which is then reacted with an excess of piperidine or pyrrolidine at least sufficient to combine with the hydrogen chloride formed.  The acid addition salts may be derived from hydrochloric, hydrobromic, phosphoric, sulphuric, lactic, acetic, succinic, fumaric and malic acids.  The bismethiodide salts of compounds of the above general formula are also referred to.  In the examples, N, N1-bis-chloroacetylamides are prepared from chloroacetyl chloride and ethylene-, trimethylene-, tetramethylene- and hexamethylene-diamine, the second stage of the process being exemplified by the preparation of N,N1-bis-(piperidinoacetyl) ethylene diamine, N,N1 - bis - (piperidinoacetyl) trimethylene diamine and hexamethylene diamine, the bis-methiodides of which are referred to, and N,N1-bis-(pyrrolidinoacetyl) ethylene diamine and hexamethylene diamine, the bis-methiodides thereof being referred to. Specification 701,209 also is referred to.
Patent GB-233798-A (GB)
Title: Improvements relating to electric distribution boards or boxes
IPC: H02B1/00
Filed: 1924-02-18
Abstract: 233,798. Bell, B., and Illingworth, W. H. Feb. 18, 1924. Distribution boards; fuse boards.-A distribution box contains a rectangular duct 4a for the ingoing and outgoing conductors, busbars disposed across the duct at 11, 11<a> and fuses or circuit-breakers 7, 7a arranged on each side of the duct. The input conductors are connected to the busbars, the busbars to the fuses, and the other ends of the fuses to the outgoing cables which proceed through slots in the walls of the duct into the duct. According to a modification, the duct may be made separable from the box as in Fig. 5 and provided with side-pieces 5, 6 which engage corresponding positioning-pieces 15 on the box, Fig. 3. The distribution lines preferably enter and leave the box through collars, Fig. 9, fitted on the ends of the box or in the case where there are several conductors leading to several ducts, collars such as that shown in Fig. 11 may be provided.
Patent GB-555840-A (GB)
Title: Noise reduction signalling system
IPC: H04N5/38
Filed: 1942-03-28
Abstract: 555,840. Television. STANDARD TELEPHONES & CABLES, Ltd. March 28, 1942, No. 4156. Convention date, Nov. 1, 1940. [Classes 40 (iii) and 40 (v)] In television transmitting systems including a range compressor 11 at the transmitter and a corresponding range expander 42 at the receiver, a variable-gain amplifier for amplifying the compressed signals inversely in accordance with the maximum highlight and/or black peak amplitudes occuring within a stipulated period is inserted after the compressor at the transmitter or before the expander at the receiver. When the variable-gain amplifier is at the transmitter, an opposite variable-gain amplifier may be inserted before the expander at the receiver and control bias may be fed thereto from the variable-gain amplifier of the transmitter. This is shown in Fig. 1, where 10 is a picture signal generator, 11 a range compressor, 15 a variable-gain amplifier, 23 and 30 diodes arranged as shown to be influenced by the signal peaks to produce the variable bias for the amplifier 15, and 22 the final stages of the transmitter. The receiver includes a signal receiver 40 followed by a variablegain amplifier 45, a black-leveller diode 51, a range expander 42 and an image reproducer 58. The control bias signal transmitted from the transmitter is received by a signal receiver 60 and passed to a triode 62. which reverses the phase of the bias and applies it to the variable-gain amplifier 45. The variable-gain amplifiers shown in Fig. 1 have one stage only; but multi-stage amplifiers may be used instead.
Patent GB-691634-A (GB)
Title: Improvements in or relating to meters having two measuring ranges
IPC: G01F7/00
Filed: 1951-05-21
Abstract: 691,634. Slipping clutches. GEHRE, H. Feb. 21, 1951 [March 8, 1950], No. 4234/51. Class 80 (ii). [Also in Groups XXVI and XXIX] A regulating mechanism for a rotary meter includes a slipping clutch 5, 7 driven from the meter shaft 1 through gears 2, 3 and a catch 4. The plate 5 transmits its motion through a plate 6 to the plate 7 which is carried by ball bearings 8. The plate 7 carries a socket 9, in which a spindle 11, secured to a disc 10, is freely rotatable. A spring 12 interconnects the disc 10 with the plate 7.
Patent GB-645957-A (GB)
Title: Improvements in or relating to fluid injectors
IPC: F23D14/64
Filed: 1948-02-13
Abstract: 645,957. Injectors. MINCHIN, L. T. Feb. 13, 1948, No. 4237. [Class 71] [Also in Group XI] An injector-mixer of the type in which a jet of one fluid entrains a second fluid into a mixing tube comprises an injector nipple consisting of a hollow body elongated ir a plane transverse to the direction of the fluid flow and terminating in one or more outlet apertures each of which extends wholly across the end wall in the direction of the small dimension of the elongated space but over a part only of the end wall in the direction of the larger dimension of the elongated space. The space 9 in the injector nipple 6 of a gas burner is elongated in section transverse to the gas flow and leads to an end wall provided with apertures 8 which are spaced lengthwise of the end wall but extend wholly across the width thereof; the side walls of the nipple converge on the end wall so that the nipple is wedge shaped. The mixing tube 7 is preferably oval or rectangular in section and is disposed with its major dimension at right angles to the major dimension of the injector nipple. The remote end of the mixing tube may be formed as an injector nipple leading into another mixing tube to provide a second mixing stage. Specification 615,805, [Group XI], is referred to and the Provisional Specification also refers to Specification 645,007, [Group XI].
Patent GB-285646-A (GB)
Title: Improvements in and connected with interior, register, or mantel register grates
IPC: F24B1/189
Filed: 1927-02-16
Abstract: 285,646. Ure, A. M. Feb. 16, 1927. Combined open fireplaces and cooking-stoves; boilers, arrangement of. -The boiler B has a forwardly - inclined front face and has a front-toback depth at the top which is less than onehalf of the corresponding dimension at the deepest part; a flue D extends up the back to the oven bottom flue F. A damper E provided with a cleaning-door G closes the flue D when desired. Cleaning-doors H, which may be provided with sliding air-inlet regulators I, give access to the top and sides of the oven, and an aperture J between them facilitates the completion of the brickwork when the stove is being set. Alternatively, a single door may cover all three apertures. Specification 203,619 is Deferred to.
Patent GB-677926-A (GB)
Title: Improvements in or relating to the production of moisture-proof films
Inventor: BERRY WILLIAM
IPC: C08J7/048
Filed: 1950-02-20
Abstract: In the production of moisture-proof films, regenerated cellulose, gelatin, &c. is treated with an aqueous dispersion, of pH 5-8, of a partially condensed urea or thiourea/formaldehyde or formaldehyde-aliphatic alcohol resin, the film is dried without curing the resin, and an aqueous dispersion, of pH 1-4, of a vinylidene polymer or copolymer is applied.  The dispersion of the urea/formaldehyde resin, in which the mol. ratio of urea to formaldehyde may be 1 : 2-3, may contain a softening agent for the regenerated cellulose, e.g. glycerine.  Examples disclose the production of dispersions (1) by refluxing at 98 DEG  C. a mixture of urea or thiourea, formaldehyde, sodium acetate and cetyl trimethyl ammonium bromide, adding acetic acid to pH 5, cooling, and neutralizing to pH7 by caustic soda solution, and (2) by proceding as at (1) above with the addition of ethanol to the reaction mixture. Vinylidene chloride may be copolymerized with one or more of the following: acrylonitrile, vinyl chloride or acetate, styrene, ethyl acrylate, methyl or n-butyl methacrylate.  The production of dispersions of vinylidene chloride/acrylonitrile is described in Specification 655,732.  Long-chain alkyl sulphates may also be used as dispersing agents.  After formation, the dispersion is acidified to pH 1-4 by citric, acetic, hydrochloric, &c. acid, or sulphur dioxide, or by ageing the dispersion under conditions which favour hydrolytic evolution of hydrochloric acid.  Examples describe the preparation of dispersions (1) by copolymerizing at 45 DEG  C. an emulsion of vinylidene chloride, acrylonitrile, ammonium octadecyl sulphate, ammonium persulphate and sodium metabisulphite, cooling, ageing, and acidifying with citric acid to pH 2.5; (2) by copolymerizing at 38 DEG  C. a mixture of vinylidene chloride, methyl methacrylate, a condensation product of formaldehyde with naphthalene sulphonic acid (as dispersing agent), ammonium persulphate, and sodium metabisulphite, cooling and acidifying to pH 3 with hydrochloric acid.
Patent GB-901195-A (GB)
Title: Electromechanical transducers
IPC: B06B1/06
Filed: 1961-02-06
Abstract: 901,195. Electric transducers. CLEVITE CORPORATION. Feb. 6, 1961 [March 11, 1960], No. 4351/61. Class 40 (1). [Also in Groups XXXIX and XL (b)] An accelerometer or strain gauge comprises a longitudinally polarized tube 15 of ceramic piezoelectric material, e.g. barium titanate, provided with electrodes 20, 22 on inner and outer cylindrical surfaces and supported from at least one of these surfaces. As shown, the element is supported by a nickel-iron plug 14 and responds to shear stress caused by axial movement of the plug. A threaded shank 13 of the plug enables attachment to a piece of apparatus whose behaviour is being investigated. The inertia of the element may be increased by surrounding it by a massive metal sleeve 36. Copper electrodes formed by electrodeposition may be used. Contact between the plug 14 and the inner electrode may be improved by knurling the plug and filling the interstices between the plug and the electrode with a conducting cement. Sensitivity to lateral forces may be reduced by ensuring that the electric axis of the tube is strictly parallel with its electric axis. This may be done by bending the axis of the supporting spigot 14. A flange 34 of the spigot may be hermetically sealed to a housing 28 which is provided with a further seal 33 at its other extremity. Electrical connections are made to the housing and to the sleeve 36. In a modification (Fig. 3, not shown), the ceramic tube 15 is supported by a sleeve which fits closely between the tube and the housing. The spigot is replaced by a close-fitting metallic core which is unattached to the housing and merely provides inertia. The housing is attached to the apparatus being investigated by an external thread.
Patent GB-757636-A (GB)
Title: Means for punching and shearing shaped members intended for the execution of metal structures
IPC: B21D28/24
Filed: 1954-02-15
Abstract: 757,636. Photo-electric control systems. ETABLISSEMENTS DUBOIS, LEPEU & CIE, and BLANDIN, R. Feb. 15, 1954 [Feb. 20, 1953], No. 4402/54. Class 40 (3). [Also in Group XXII] A machine for punching holes in and cutting lengths from a continuous length of flanged bar formed by welding a number of bars end to end includes photo-electric cells arranged to detect an advancing welded joint and then to control the machine so that a short length of bar which includes the joint is cut off and discarded. In Fig. 15a the end of the bar is shown against a stop 8a, the transverse dotted lines show where the bar will be cut by the shears 9 into separate lengths and the double transverse line 136 indicates a welded joint which has passed a photoelectric cell 133. In Fig. 15c, the end of the bar has reached a stop 8c, the first section of bar is about to be cut off and the punching units 11a, 11b, 11c have just completed the punching of the third section of bar. As soon as the shears have operated, the results of the weld having passed the photo-electric cell 133 takes effect and causes a press 137 to clamp the shearing unit and the stops 8a, 8b, 8c to the bar which is fed forward until the weld passes in front of a photo-electric cell 134, Fig. 15e, when the clamp 137 is released and the feed of the bar continued until the end reaches the stop 8a when punching is resumed. When the third length of bar is sheared; Fig. 15k, the result of the weld having passed the photo-electric cell 135 takes effect to move the shears and stops back to their original positions, Fig. 15l, and to operate the shears again to cut off a short length 138 containing the weld.
Patent GB-536391-A (GB)
Title: Improvements in or relating to umbrellas and parasols
IPC: A45B3/04
Filed: 1940-03-09
Abstract: 536,391. Umbrellas etc.; electric battery lamps. VERSCHUEREN, E., and BEVERE, R., DE. March 9, 1940, No. 4425. [Class 134] [Also in Group XI] An electric light bulb 11 is 'mounted in a tubular housing 9 with light apertures 10 connecting the solid stick 1 to the cover frame. The handle is hollow and carries a switch element 6 operated by a lateral knob 7. A battery 5' is housed in the handle and retained by a screw cap 8. Leads 12 to the lamp are housed in a groove or grooves 13 subsequently filled with plastic material. A translucent sliding or rotating sleeve may be provided on the lamp housing to protect the lamp, and is movable to uncover the light apertures 10 for access to the lamp.
Patent GB-450081-A (GB)
Title: Improvements in or relating to circuit arrangements for selectively receiving and amplifying modulated high frequency carrier waves
IPC: H03G5/26
Filed: 1936-02-13
Abstract: 450,081. Valve circuits for wireless reception. NAAMLOOZE VENNOOTSCHAP GLOEILAMPENFABRIEKEN, Emmasingel, Eindhoven, Holland. Feb. 13, 1936, No. 4432. Convention date, April 13, 1935. [Class 40 (v)] The band width selected by the high or intermediate frequency circuits of a wireless receiver is automatically varied in accordance with the amplitude of carrier waves adjacent the desired carrier. In Fig. 1, the coupling 3 between the I.F. amplifiers 1, 2, of a superheterodyne receiver is varied by moving the coils towards or away from each other under control of an electromagnet 5 in the anode circuit of an amplifier 6. Circuits 11, 12, tuned respectively 9 kc. above and below the intermediate frequency, are coupled to the coils 3, and feed two diodes 9, 10 the load resistances 7, 8 of which are series-connected in the grid-cathode circuit of valve 6. Strong interfering signals whose frequency lies within 9 kc. on each side of the desired frequency increase the grid bias of 6, the resulting fall in anode current causing 5 to loosen the coupling 3 until equilibrium is restored. In Fig. 2 the low frequency voltages appearing across the signal diode load resistance 16 occur by interference between the desired and undesired carrier frequencies after rectification and are applied to the low frequency stages at 17,18 and to a rectifier 19 feeding a filter 20 which passes only frequencies exceeding 6 kc. The electromagnet 14 varies the coupling in an I.F. stage preceding 13.
Patent GB-1020109-A (GB)
Title: Method for making a snap-action diaphragm
IPC: B21D26/00
Filed: 1964-11-10
Abstract: 1,020,109. Making switches; brazing. J. E. LINDBERG. Nov. 10, 1964, No. 45830/64. Headings B3A and B3R. [Also in Division G1] In a method of making a snap-action diaphragm, a molybdenum diaphragm 11 is heated in a vacuum furnace for about one hour at 1850-1900‹ F. and then cooled and sandwiched between body members 13, 14 and brazing rings 37, 38 (Fig. 2, not shown), stop-off compound being applied around the inner peripheries on the plates 13, 14 and on the diaphragm 11. The assembly is clamped and brazed, preferably in a hydrogen furnace at about 2000‹ F., simultaneously a tube 30, preferably of ceramic, is brazed to a tube 27 and to a cap 35 and a capillary tube 33 is brazed to the cap 35 (Fig. 3, not shown). The tube 33 is connected to a source of pressurized inert gas which passes through a clearance 31 between the tube 30 and a contact 18 and into the chamber 16 to deform the diaphragm 11 into a spherical segment 40. The pressure is lowered and pressurized inert gas is fed into the chamber 15 to force the diaphragm against the flat surface formed by the contact tip 17, tubes 27, 30 and surface 25 to form wrinkles 41. Much greater pressure than required merely to flatten the segment 40 is used and the pressure in the chamber 15 may be varied to cycle the diaphragm to ensure uniformity of diaphragm characteristics in production. The tip 17 may be of different material to the contact 18.
Patent GB-100920-A (GB)
Title: An Improved Account Book.
Inventor: WHITFORD NORMA JOHN
IPC: B42D11/00
Filed: 1916-03-29
Abstract: 100,920. Whitford, N. J., and Wells, P. H. P. March 29, 1916. Manuscript books. - An account-book is provided with leaves of equal size having pieces 1, 3, 4 cut from them alternately at the top and bottom to allow the total of a page to be placed directly at the top or bottom of the next page. The book may be formed from sheets of paper similarly cut at diagonally opposite corners.
Patent GB-481044-A (GB)
Title: Improvements in and relating to reheating furnaces
IPC: C21D9/00
Filed: 1937-02-16
Abstract: 481,044. Step - by -step conveyers. LOEHR, W., and RASSELSTEINER EISENWERKSGES. AKT.-GES. Feb. 16, 1937, No. 4622. [Class 78 (i)] [Also in Group XII]. A reheating furnace having a walking- beam conveyer is automatically charged with flat metal bars or the like 5 from a pile 16 in front of the furnace by hooked arms 10 which are reciprocated in timed relationship with the moving conveyer bars 1 by levers 6, the latter being connected by links 9 to the rails 4 carrying the pillars 3 on which the bars 1 are mounted. In order that the stroke of the feed arms 10 may be varied, the links 9 are fitted with turn-buckles 21 and the bearing pins 12 are adjustable, bv means of screws 20, in slots 18 in the lower ends of the levers 6., The arms 10, which are formed with hooked ends 14 carrying rollers 15, are fitted with adjustable set-screws 32 so that the distance the arms drop when the roller 15 clears the top bar 5 on its rearward stroke may be varied in accordance with the thickness of the bars. The latter are carried on a vertically movable platform 22 the upward step-by-step movement of which is effected by mechanism started and stopped by switch-gear 24, this latter being actuated by a lever 27 connected to a feeler rod 23 which carries at its lower end a roller 26 resting on the uppermost bar 5. The platform 22 is formed with a recess 33 into which, when the last bar 5 has been charged, the roller 26 drops, this movement actuating the switch-gear 24 to effect lowering of the platform. The arms 10 and roller 26 are prevented from dropping during recharging of the platform by downward movement of a hand-lever 34 which is connected, through toothed segment 36 and chain and pinion gearing 37, 38, 39 to fingers 40 integral with the arms 10, and through slotted arm 43 and lever 42 to the guide 25 for the feeler rod 23.
Patent GB-181420-A (GB)
Title: Improvements in and relating to casting metal or other plastic material
IPC: B22C9/04
Filed: 1921-02-09
Abstract: 181,420. Lake, S. Feb. 9, 1921. Moulds; casting-apparatus.-A mould, for casting reproductions of natural objects &c. in metal or other material, is made from an electric-conducting material so that by passing a current through it the pattern is destroyed by the heat produced. The article 6, Fig. 3, to be moulded is supported within a sleeve 1 lined with refractorv material 2 by wax 7, threads 8 and a bar 9. A fluid mixture of plaster of Paris and graphite such as that sold under the Trade mark " Aquadag," is poured in and allowed to set. The cylinder is then mounted in heads 11, 12 lined with refractory material 13 and carrying hollow electrodes 16, 20 the latter being adjustable by means of a yoke 21 and screws 23, Fig. 2. The electrode 20 is placed in contact with the mould and current passed to destroy the pattern, wax and threads. Air is then forced through the electrode 16 to drive the ash out through the electrode 20 which is then withdrawn as shown and a metal rod 26 is introduced and its end melted by an arc struck between the electrode 20 and the mould. When sufficient metal has been melted it is forced into the mould by advancing first the electrode 20 and then the rod 26, surplus metal passing through the openings formed by the threads 8. Air may at the same time be extracted from the mould through the electrode 16.