baber/WOPTO huggingface dataset:
Patent GB-1394289-A (GB)
Title: Mechanical filter and method for manufacturing the filter
IPC: H03H9/50
Filed: 1972-08-09
Abstract: 1394289 Electro-mechanical filters LICENTIA PATENT-VERWALTUNGS GmbH 9 Aug 1972 [24 Aug 1971] 37220/72 Heading H3V An electromechanical filter comprises a set of intermediate bending mode resonators 2, and input and output resonators 1, 1<SP>1</SP> to which ceramic transducers 8 are attached, the resonators, which bend in the plane of the resonators as a whole, being interconnected at each of their end faces, with a pair of welded on nickel alloy coupling wires 3. The resonators may differ in length and/or cross sectional area. Respective coupling wires may be selected from different draw batches, so that the sum of their cross sections corresponds to a given value. A holder comprises a pair of projections 4 for each resonator, each stressed in torsion during use and possibly stamped or etched from an integral piece of sheet metal, Fig. 7 (not shown). The projections may each be flat, Fig. 5 (not shown), or an apertured flanged member Fig. 6 (not shown), dimension (L) having a given relation to the vibratory wavelength. The input and output resonators 1, 1<SP>1</SP>, to ensure the same resonance frequency as resonators 2, in spite of the effect of transducers 8, may be made of greater diameter than, or shorter than the remaining resonators, Fig. 9 (not shown), possibly with projections (9), Fig. 8 (not shown) to hold the coupling wires, or there may be a progressive change in resonator length, Fig. 10 (not shown). The resonators are glued, spot welded, or soldered to the holders, and are fine tuned by grinding their end faces. The coupling between adjacent resonators may change progressively, by varying resonator cross-section, or spacing l K . A housing 6 is provided. Design of a 50 KHz filter is discussed, Fig. 4 (not shown), displaying how the inter-resonator spacing (l k ) effects upper and lower band-edge, and middle frequencies, (# u ,# o ,# m ), (# r ) being the resonators' resonance frequency. Attenuation poles may be provided by coupling of non-adjacent resonators by further coupling elements. The filter may be a band-pass filter in a carrier frequency system.
Patent GB-1126465-A (GB)
Title: Manufacture of hydrogen and carbon disulphide
IPC: C01B3/00
Filed: 1964-09-14
Abstract: 1,126,465. Hydrogen; carbon disulphide. I. G. NIXON. 14 Sept., 1965 [14 Sept., 1964], No. 37470/64. Heading C1A. Hydrogen and carbon disulphide are simultaneously produced in a process wherein hydrogen sulphide or a sulphur compound yielding hydrogen sulphide under the reaction conditions, e.g. organic mercaptans and disulphides obtained as waste products in the petroleum industry, and at least one C 1 -C 10  hydrocarbon, e.g. methane, ethane, propane, butanes and straightrun gasoline fractions, are heated at an elevated temperature under conditions resulting in pyrolysis of a major proportion of the hydrocarbon to form hydrogen, the materials (the hydrocarbon or mixture of hydrocarbons being regarded as one material) being heated either in admixture or sequentially in the same reaction zone with maintenance of pyrolysis conditions, and the resulting reaction mixture quenched, e.g. with a dry recycled gas stream (followed by a water quench if necessary). The reaction mixture may be treated for the separation of carbon disulphide and excess hydrogen sulphide forming compound and the resultant crude hydrogen washed with oil under pressure to remove any methane. The hydrogen may be fed to a petroleum refining process, e.g. hydrodesulphurization, hydrofining, hydrocracking and hydrogenation, and the amount of hydrogen produced may be controlled in accordance with the requirements of such a process by adjustment of the ratio of hydrocarbons to hydrogen sulphide forming compound fed to the reaction zone. Solid catalysts of the type described in the literature for the cracking of C 1 -C 10  hydrocarbons and/or the synthesis of carbon disulphide from C 1 -C 10  hydrocarbons and sulphur, may be present in the reaction zone, e.g. nickel oxide, the sulphides of the 8th Group, 4th Period, 4th Series of the Periodic Table (after Mendeleeff), or the phosphates of zirconium, thorium or copper. Temperatures in the reaction zone may be between 800 and 1500‹ C. The hydrocarbon may be subjected to a preliminary cracking in a heated zone preferably containing a catalyst described in the literature for the cracking of hydrocarbons, a substantial proportion of the carbon resulting from the cracking being deposited therein. The hydrogen sulphide or hydrogen sulphide/ hydrocarbon mixture may be derived from the petroleum refining process to which the hydrogen produced by the invention is fed.
Patent GB-1429429-A (GB)
Title: Production of 3alpha,7alpha-dihydroxy-5beta-cholanic acid  and intermediates therefor
IPC: C07J9/00
Filed: 1974-08-29
Abstract: 1429429 Chenodeoxycholic acid and intermediates INTELLECTUAL PROPERTY DEVELOPMENT CORP 29 Aug 1974 37814/74 Heading C2U  The invention comprises the dehydration of a C 1-6  alkyl 3α,7α-diacyloxy-12α- hydroxy-5#-cholan-24-oate with thionyl chloride, methanesulphonyl chloride or methyl chlorosulphite, preferably in the presence of pyridine, to yield a C 1-6  alkyl 3α,7α-diacyloxy- 5#-chol-11-en-24-oate, which may then be hydrogenated (e.g. using Pd/C catalyst) to a C 1-6  alkyl 3α,7α-diacyloxy-5#-cholan-24-oate, hydrolysis of which yields chenodeoxycholic acid.
Patent GB-375259-A (GB)
Title: Improvements in or relating to pistons
IPC: F16J9/14
Filed: 1930-12-15
Abstract: 375,259. Piston rings. HANOTIER, V., HANOTIER, G., and HANOTIER, P., 447, Avenue de la Couronne; Brussels. Dec. 15, 1930, No. 37824. Convention date, Dec. 16, 1929. Void [Published under Sect. 91 of the Acts]. [Class 122 (i).] In rings of the kind comprising segments 3 expanded by wedges 4 pressed outward by springs 5, the wedges are freely mounted in the groove. Pins 9 engage holes 10 in the segments 3 to limit expansion thereof. The parts may be stamped or cut from thin sheets of metal, e.g. aluminium, and formed with inclined contacting faces.
Patent GB-850065-A (GB)
Title: Improvements relating to train detecting apparatus
IPC: B61L13/04
Filed: 1958-11-25
Abstract: 850,065. Railway signalling systems. WESTINGHOUSE AIR BRAKE CO. Nov. 25, 1958 [Dec. 4, 1957], No. 37885/58. Class 105. In apparatus controlling the movement of trains over a track section in which the checking out of a train from a section is signalled by a pulse of energy operating a detector relay via a normally non-conducting electronic device, the integrity of the device is checked by a slow release relay normally maintained energised by a back contact of the detector relay. Normally operated relay CHR1 is momentarily released when a train checks into the section T, thereby breaking the hold circuit of the trap stick relay HR1 which releases and switches the signal IS to danger (IRE) via its back contact " b." On leaving the section the train carried permanent magnet M induces a pulse in the track side coil C2 which is amplified by transistor D2 and momentarily operates the detector relay DR2 which via its front contact " a " operates relay HR1 and restores the signal IS to clear (IGE). In the event of a short circuit in the transistor D2 detector relay DR2 operates for a sufficient time for slow release relay DRP2 to release thereby weakening at front contact " b " the make circuit of relay HR1. Thus the signal IS is not returned to clear by subsequent trains checking out of the section. Relay DRP2 can only be re-energised by manual operation of the push button N. The arrangement is repeated for each section of the line.
Patent GB-975883-A (GB)
Title: Improvements in and relating to telephone sets
Inventor: DRIVER DOUGLAS LOUIS ASHTON
IPC: H04M1/03
Filed: 1963-09-26
Abstract: 975,883. Telephone sets. STANDARD TELEPHONES & CABLES Ltd. Sept. 26, 1963, No. 37924/63. Headings H4J and H4K In a local battery telephone set all the components are housed in a handset having a mouthpiece 3 and transmitter 5 at one end, an earpiece 2 and receiver 4 at the other end and a one-piece handle 1 of shatterproof plastics material, such as nylon, which houses a cylindrical dry cell or a plurality of such cells with their axes in line. The handle may be made of several mouldings glued together, or it may be a single moulding incorporating also the mouthpiece and earpiece. The mouthpiece 5 houses a buzzer 14 for generating calling current and a transformer for coupling the transmitter to line. A press-to-talk switch 6 and a calling switch 7 are provided. All entries to the handset are rendered waterproof by the provision of sealing gaskets such as 13, 18, 19. Agrommet 20 is also provided through which a cable 21 may pass; alternatively, this entry may be blanked off and the leads connected to terminals 23, and 24 (not shown). The preferred circuit is shown in Fig. 4, the receiver 4 responding to incoming calling current, operation of press-to-talk switch 6 connects the transmitter and battery 25 to the secondary winding of TR1, and that of calling button 7 connects the battery 25 to the left-hand winding of buzzer 14, and the right-hand winding of the buzzer to line.
Patent GB-1187954-A (GB)
Title: Stabilisation of the Output Voltage of a Unidirectional Voltage Generating Circuit.
Inventor: WHARTON JAMES HUGH
IPC: H04N3/185
Filed: 1966-08-24
Abstract: 1,187,954. Automatic voltage control. TELEVISION INSTRUMENTS Ltd. Aug. 18, 1967 [Aug. 24, 1966] , No.38083/66. Heading G3R. The unidirectional output voltage of a generating circuit, e.g. the E.H.T. supply of a television set, is stabilized by a feedback loop which includes a reactive voltage divider network responsive to A. C. variations, such as ripple, in the stabilized output voltage, and a resistive voltage divider, including a voltage dependent resistor, responsive to D. C. variations in the output voltage. As shown, a voltage generator 1, including a pentode 5, a transformer 11, diodes 14, 15 and a capacitor 13 produces an E.H.T. voltage at output terminal 16; a stabilizing circuit 30, comprising triodes 31, 37, has an input terminal 32 connected over a feedback loop 20 to the E.H.T. terminal 16 and has its output connected to the screen grid 41 of the pentode 5 which is thereby correctively controlled in dependence upon variations in the E. H. T. output voltage as detected by the feedback loop. Alternating variations caused by ripple, for example, are detected by the capacitive voltage divider 23, 24, and are applied to the terminal 32 by way of a resistor 26 and a further capacitor 27. Steady, long term, variations are detected by the resistive voltage divider comprising a voltage dependent resistor 21, a resistor 28 and an adjustable resistor 29, the junction between resistors 21 and 28 being connected to the terminal 32. The stabilizing arrangement may be of the shunt valve type, and such an embodiment is described with reference to Fig. 2 (not shown). .
Patent GB-865326-A (GB)
Title: Process for stabilising halogen-containing polymers and copolymers
IPC: C08K5/3472
Filed: 1958-11-26
Abstract: Halogen-containing polymers are stabilized by incorporating therein, before, during or after polymerization, 3-amino-1, 2, 4-triazole and/or one or more substitution products thereof containing not more than one amino group directly linked to the triazole nucleus. Polymers specified are vinyl and vinylidene chloride homopolymers and copolymers with each other or vinyl acetate 0,1 to 5 wt. per cent of stabilizer may be used. Preferred triazoles have the formula:- <FORM:0865326/IV (a)/1> where R is H or an alkyl, aralkyl, cycloalkyl, or aryl radical which may be substituted by halogen atoms or hydroxyl, alkyl or alkoxy groups and R1 is R or -CONHR1 where R1 is an alkyl radical.  Specified triazoles are 3-amino-5-methyl-, -heptadecyl-, -benzyl-, -cyclohexyl-, -p-methoxyphenyl-, -o-methoxyphenyl-, -o-hydrocyphenyl-, -p-methylphenyl-, -p-t-butylphenyl-, -phenyl-, and p-chlorophenyl- -1, 2, 4 triazoles; 3-ureido-5- -methyl-, -heptadecyl-, -phenyl-, -p-chlorophenyl-, and -(2, 5-dichlorophenyl)- -1, 2, 4 triazoles; and 3-methylamino-, 3-p-tolylamino-, 3- pethoxyphenylamino-, 3- ochlorophenyl-amino-, 3- phydroxyphenylamino-, 3-cyclo-hexylamino-, and 3- benzylamino- -1, 2, 4 triazoles.  In examples various triazoles are added to (1) polyvinyl chloride (P.V.C.), (2) P.V.C.+ alkyl sulphonic acid esters of phenol-cresol mixtures, (3) and (4) P.V.C.+dioctyl philate and (5) a 97/3 vinyl chloride/vinyl acetate copolymer.
Patent GB-859056-A (GB)
Title: Bundling and tying wire coils together
IPC: B65B27/06
Filed: 1957-12-09
Abstract: 859,056. Bundling coils of wire. SCHLOEMANN A.G. Dec. 9, 1957 [Dec. 13, 1956], No. 38169/57. Class 94(1). Wire coils 1 are removed from the hooks 2 of an overhead conveyer by a device 3 which transfers them to pins 5 mounted in a turret 6 which is rotated intermittently through 90 degrees to position each pin in turn at the transfer station, where it receives a group of, for example, six coils, a second station where the coils are weighed, a third station where the coils are bundled and a discharge station where the bundle of coils is removed by a lifting truck 22. Each pin 5 is swung upwardly as it approaches the transfer stations to facilitate transfer of the coils is then returned to the horizontal position. At the third station the axis of each group of coils is aligned with that of the associated pin by means of a verticallymovable support 14, and the group of coils is then compressed between a plate 8 surrounding the pin and a head 11 actuated by a hydraulic or mechanical press 10. The compressed group is then secured by the manual application of two ties 17, each tie, Fig. 2, comprising hooks 18, 19 which engage the end coils and are adjustably interconnected by a chain 21. The plate 8 and head 11 are formed with peripheral notches 12 to facilitate the application of the ties.
Patent GB-1262900-A (GB)
Title: Apparatus for determining the angle of incidence of sound waves with respect to the perpendicular to a linear array of transducers
IPC: G01S15/42
Filed: 1969-07-30
Abstract: 1,262,900. Acoustic direction-finding. FRIED KRUPP G.m.b.H. 30 July, 1969 [31 July, 1968], No. 38272/69. Heading H4D. In a system for determining the angle of incidence # of a sound wave front 1 (Fig. 1) (of predetermined frequency) relative to two spaced transducer groups 2, 3 from the phase shift needed to compensate for the phase angle # between the output voltages of the two groups, a variable phase shifter 7 giving a phase shift linearly dependent on the rotation angle a of its control shaft 15 is arranged to give an angle indication #<SP>1</SP> equal to # against a linearlycalibrated scale 9 by providing an angle translator 8 to allow for the dependence of # on sin #. Thus α is made proportional to sin #<SP>1</SP> by the translator. A sum-and-difference indicator 6 displays an upright line when the phase compensation is correct. A network 18, also controlled by shaft 15, provides a subsidiary phase shift to compensate for small phase errors arising if, in the case of an active sonar, Doppler effects give incoming sound signals of frequency differing from the predetermined frequency. The transducer groups 2, 3 may be sub-divided symmetrically into further groups. The angle translator 8 (Fig. 2) comprises input shaft 10 for rotating resolver 11 through angle #<SP>1</SP>. Transformer 13 provides a voltage u for the resolver stator and a voltage u 0  for a centretapped linear potentiometer 14. The resolver rotor voltage u r =u sin #<SP>1</SP>, and the voltage at the potentiometer 14 wiper are fed to amplifier 16 which drives selsyn 17 to rotate output shaft 15 and the wiper until the two voltages balance, whereby the wiper angle α is made proportional to sin #<SP>1</SP>. The ratio u/u 0  is adjustable.according to the predetermined frequency and the local speed of sound. In network 18 (Fig. 3, not shown), the network input voltage u 1  is given a phase-shift dependent on frequency, the difference between the phase-shifted voltage, u 2  and voltage u 1  is obtained, and a fraction (set by shaft 15) of the difference voltage is added to u 1  to give a network output voltage u s .
Patent GB-1345430-A (GB)
Title: Protable machine tool
IPC: B23B5/16
Filed: 1971-08-16
Abstract: 1345430 Machining pipes VICTAULIC CO OF AMERICA 16 August 1971 [2 Dec 1970] 38345/71 Heading B3T Apparatus for machining circumferential grooves in plastics pipes comprises a body portion 12 having adjustable roller-supports 20 for supporting the end of a pipe to be machined and by which the apparatus is mounted on the pipe, a central channel 13 in the body 12 which carries a back plate 17 adjustable therein by screw means 34, 35, the back plate having a platform 43 extending at right angles thereto which supports a rotary cutter assembly 56 with a motor 57. The assembly and motor are mounted on a slide 48 adjustable on the platform 43 at right angles to the back plate. The adjustment of the back plate and slide permitting radial and axial adjustment of the cutter 56 with respect to the pipe. An adjustable stop 100 is provided beneath the platform to effect control of the depth of slot produced by the cutter 86. Stop members 25 are also provided which extend from the body portion to control the axial location of the apparatus on the pipe and from which position axial adjustment of the cutter can be made. Handles 26 are provided on the body 12 to permit manual rotation of the apparatus around the pipe and wipers 107 are also provided remove waste cuttings during the machining operation. Additionally an air blast may be emitted from the motor 57 to assist in the removal of cuttings.
Patent GB-866286-A (GB)
Title: Method and apparatus for automatic loop control
IPC: H02P5/485
Filed: 1957-12-10
Abstract: 866,286. Automatic loop control systems. NIEDERRHEINISCHE HUTTE A.G. Dec. 10, 1957 [Jan. 28, 1957], No. 38425/57. Class 38 (4). In an automatic loop control system for continuous wire rolling trains, variation in the product of the cross-section and rate of movement of the wire is detected by a loop of rolled wire rubbing on a contact strip of a potential divider, the tapped voltage controlling all subsequent roll-drives so as to maintain the loopsize constant. As shown, Fig. 2, a loop of wire 4 formed between a roll 1 and a roll 5 rubs on a contact strip of a potential divider 6<SP>1</SP> connected across a secondary 7, 8 of a transformer 9. The voltage between a tap 11 on the potential divider and the wire 4 is applied to a primary of a transformer 14. The voltage at the secondary of the transformer 14 is compared with a reference voltage, set by a potentiometer 15 across the primary of the transformer 9, in a comparator 16. The roll 5 is driven by a motor 29 controlled by a speed regulating unit 22 responsive to a signal from a tacho-generator 28 via the comparator 16 which modifies the control signal from the tacho-generator so as to maintain the loop size constant. The position of the loop for zero tapped voltage is controlled by tappings 12 on the transformer 9. The potential divider may comprise a tapped resistor, or a multi-tap transformer secondary. In a modification, the contact strip 6<SP>1</SP> and potential divider 15 are supplied from a directcurrent source and the comparator 16 compares two direct potentials. In another embodiment, Fig. 8, the rolls of a roll train are each driven by a motor 271 having a speed regulator 22 controlled by a tacho-generator 28 and a comparator 16 comparing a reference signal from a potential divider 15 with a signal, through a receiver 61, derived from a loop of wire 4 rubbing on a contact strip 6<SP>1</SP>. A transformer 14, feeding the loop signal to the receiver 61, has a tertiary winding 14<SP>1</SP> connected in series with all other windings 14<SP>1</SP> so that a signal is applied to terminals 47, 48 of a comparator 40 representative of the total variation of the loop from a predetermined size. The total variation signal through a full-wave rectifier 45 energizes control windings of transductors 43, 43<SP>1</SP> acting as a variable impedance shunt across a secondary 41<SP>11</SP> of a current transformer 41. The change in impedance of the current transformer with total variation in loop size varies the voltage applied across the potential dividers 15 so as to modify the speed of the rolls, as determined by the speed regulator 22, so as to maintain constant the product of wire-speed and crosssection. In a modification, the potential dividers are supplied with a direct potential, and the current transformer 41 replaced by a resistor.
Patent GB-852693-A (GB)
Title: Electrically heated infra-red radiant energy source
IPC: H05B3/48
Filed: 1957-12-11
Abstract: 852,693. Infra-red emitters. PERKINELMER CORPORATION. Dec. 11, 1957 [Dec. 13, 1956], No. 38465/57. Class 39(3). An electric heater emitting infra-red rays e.g. for measuring purposes, comprises a heating resistor 11 consisting of a metal of the platinum group (Ru, Rh, Pd, Os, Ir, Pt) especially Rh or an alloy of Rh, in a ceramic tube 10 which is completely filled with refractory insulating material 12. The ends of the tube 10 may be open, or closed by silver caps 13 through which the resistor passes and to which it is soldered, the caps 13 serving as terminals between spring clips. The tube 10 may be of aluminium oxide and may have one or more coatings modifying the emission of radiant energy, for example iron oxide or yttrium oxide. The insulation 12 may be a mixture of zirconium silicate, aluminium oxide, cobaltic oxide, molybdic acid and air is excluded to prevent oxidation of the resistor when operated at 1200‹-1500‹K. The resistor may be helical at 15 where maximum radiation is required and may have a loop 16 at each extended end to relieve mechanical stress between the wire and the end caps ; or silver leads may be spot welded to the ends of the resistor, the junction being embedded in the insulation, which may be fed into the tube under pressure. The sleeve with the resistor therein may be submerged in an aqueous suspension or slurry of the insulation, which is agitated and the surface of which is held under a vacuum to remove air. The insulation is then dried and that on the outside of the tube is removed. The slurry may be fed to a funnel inserting in a rubber tube over one end of the tube, the other end of which contains a plug of cotton wool and is attached to a vacuum system, and the unit is kept under a vacuum until the insulation is dry. The insulation is finally hardened by passing a current through the resistor.
Patent GB-888599-A (GB)
Title: Improvements in or relating to adjusting and indicating mechanisms
Inventor: COOPER JOHN RAYMOND
IPC: G05G1/10
Filed: 1959-11-13
Abstract: 888,599. Variable resistors. MARCONI INSTRUMENTS Ltd. May 17, 1960 [Nov. 13, 1959], No. 38565/59. Class 37. [Also in Groups XIX, XXIV and XXXVII] Two devices such as switches or potentiometers are adjusted through coaxial shafts 1, 2, having fixed thereto pointers 4, 6 indicating against scales 5, 7 respectively, and being turned by knobs 3, 8 respectively fixed and free on the inner shaft 1, with a driving connection between the knob 8 and outer shaft 2 comprising a spring disc or spider 9 attached to the shaft 2 with at least two teeth 10 engaging holes 11 in a disc 8a rigid with the knob 8 and means to prevent this driving connection from fouling the pointer 4 comprising a pair of balls 13 in a cage 12 carried by the pointer 4 which force back that part of the disc 9 for the time being in its vicinity, freeing one tooth 10 whilst leaving at least one in engagement.