baber/WOPTO huggingface dataset:
Patent GB-1027364-A (GB)
Title: Reforming process
Inventor: ROSENBLATT THEODORE MARTIN
IPC: C10G69/08
Filed: 1963-10-24
Abstract: A combination system, employing a cobalt oxide-molybdenum oxide on alumina catalyst hydrofining zone and a platinum group metal on alumina hydroforming zone wherein the hydrofining catalyst cannot be activated until hydrogen is available from the hydroforming zone, is started up by charging preheated fresh naphtha to the hydrofining zone, circulating heated dry inert gas through the hydroforming zone to raise the temperature to 850-950 DEG  F. without passing the hydrofiner effluent through the hydrofiner, increasing the temperature of the naphtha feed to at least 550 DEG  F., charging the hydrofiner effluent to the hydroformer when it has reached a hydroforming temperature, separating and collecting hydrogen-containing gas from the hydroformer effluent, continuing until sufficient hydrogen-containing gas is available for the hydrofining reaction zone, charging a portion of the hydrogen-containing gas to the hydrofiner and thereafter activating the cobalt oxide-molybdenum oxide catalyst by adding a sulphiding agent to the naphtha feed to convert the oxides to sulphides, while continuing to supply hydrogen-containing gas to the hydrofiner.  The inert-gas may be nitrogen, natural gas or scrubbed flue gas.  The sulphiding agent may be carbon disulphide, or lower alkyl mercaptans.
Patent GB-1369922-A (GB)
Title: Timing mechanism
IPC: G04F3/06
Filed: 1972-04-24
Abstract: 1369922 Time switches MALLORY TIMERS Ltd 24 April 1972 [23 April 1971] 42292/72 Divided out of 1369921 Heading H1N A timer comprises drive means 111 coupled to a shaft 113 by clutch means 150, cam means 129 carried by said shaft 113 so as to rotate therewith, a housing 114 substantially surrounding said shaft and cam means, and electrical switch means 118, 119, responsive to the cam means 129; said clutch comprising a coil spring 152 in frictional engagement with a member of said drive means for rotation thereby and having a distal end 154 rotationally keyed to said shaft 113 or said cam means 129. As shown the end 154 of spring 152 is a loose fit in a slot 156 in the hub of cam 129 and also passes through a hole 160 in shaft 113. A synchronous motor 109 drives a gear 107 loose on shaft 113 but, by the unidirectional clutch formed by the friction grip of spring 152 on its hub 107<SP>1</SP>, drives the shaft and hence cam 129. The clutch allows shaft 113 and cam 129 to be advanced to a desired starting position by a knob (133, Fig. 2, not shown).
Patent GB-1210629-A (GB)
Title: Surge arrester
IPC: H01T4/20
Filed: 1969-08-26
Abstract: 1,210,629. Surge arresters. BROWN BOVERI & CO. Ltd. 26 Aug., 1969 [28 Aug., 1968], No. 42464/69. Heading H2H. A surge arrester comprises a plurality of series spark gaps and a magnetic blow-out device. Each gap has an ingition gap associated with it. In the arrangement shown in Fig. 1, a voltage-dependent resistor 14 is connected in series with main gaps 11 and a blow-out coil 12 which has a further gap 13 connected across it. Impedances 20 distribute the voltage across the gaps. A parallel circuit path includes ignition gaps 15 and impedances 16, 17, 18, 19. In use the ignition gaps 15 break down first, followed instantaneously by the main gaps 11, since the impedance 18 limits current flow through the ignition gaps. The gaps 15 now extinguish, and the arcs in the main gaps are lengthened magnetically until the voltage becomes such that the ignition gaps 15 again strike over extinguishing the main gaps. The alternating cycle repeats until the over-voltage is cleared. In a modification, Fig. 2 (not shown), the resistors 14 and 18 are divided into parts which are connected alternately with the main gaps 11 and ignition gaps 15 respectively. The construction of the arrester is also described with reference to Figs. 3 and 4 (not shown).
Patent GB-1325803-A (GB)
Title: Coating nylon
IPC: C23C18/44
Filed: 1971-09-14
Abstract: 1325803 Silver coated nylon fabric for stockings ROHM & HAAS CO 14 Sept 1971 [28 Sept 1970] 42715/71 Heading A3V [Also in Division C7] Nylon fibres are coated electrolessly with silver (see Division C7), and can be used in the manufacture of stockings and tights.
Patent GB-1509595-A (GB)
Title: Differential phase correcting arrangement
IPC: H04N5/38
Filed: 1975-10-21
Abstract: 1509595 Phase shifting circuits; modulation LGT LABORATOIRE GENERAL DES TELECOMMUNICATIONS 21 Oct 1975 [22 Oct 1974] 43229/75 Headings H3T and H3R A phase shifting circuit, e.g. for a TV transmitter, has an input terminal E 1  and means 27 for forming a signal in phase opposition to the input signal, the two signals passing through parallel channels to an adder 10, 15 having an output terminal S, which is the output of the circuit, one channel including a phase shifting device 1 comprising an oscillatory circuit 6, 7, a voltage divider 2, a resistor 4 and a variable resistance element 5 connected substantially as shown, element 5 being responsive to a control signal at E 2  to vary the phase shift produced by 1. The variable resistance element 5 may be a PIN diode, and it is shown in the Specification that variation of the resistance of element 5 does not affect the voltage output of the phase shifter provided that R 4 =(n-1)Rp where Rp is the parallel effective resistance of the tuned circuit 6, 7 including its load, and the voltage at the top of the divider 2 is 1/n of the input voltage. At the resonance frequency (W 0 ) of the tuned circuit the emitter voltages of 15 and 10 (V 1 , V 2  respectively), Fig. 5 (not shown), are 180 degrees out of phase producing a resultant (V 3 ) in phase with or 180 degrees out of phase with the input signal. At a neighbouring frequency (W) the phase of the resultant (V 3 <SP>1</SP>) is shifted. The phase shifter may be used to correct for phase distortion in a modulator (21), Fig. 2 (not shown), which is supplied with IF and VF signals, the modulator output being connected to the input terminal E 1 . The VF signal is also applied to a branch comprising a delay line (23) which compensates for the delay time of the modulator, and clipping circuits (24, 25) which select and pass those portions of the VF signal above and below two threshold voltages (V 1 , V 2  respectively). The outputs of the two clipping circuits are connected to an adder (26) whose output is connected to the terminal E 2 . In another application the phase shifter is used to correct for phase shift in an output amplifier (33), Fig. 3 (not shown). The output of an IF modulator is connected to the input terminal E 1 , and the output feeds a frequency converter (32) the output of which passes to the output amplifier (33). To the input of the latter a branch feeding a phase comparator (39) is connected, which includes a phase shifter (34), a modulation detector (35) and a delay line (36). At the output of the amplifier (33) is connected a branch consisting of an attenuator (37) and a modulation detector (38) which also feeds the phase comparator (39). The phase comparator output is connected to the terminal E 2 , supplying a signal whose amplitude is proportional to the phase difference between the two signals at the input and output of the amplifier.
Patent GB-1070238-A (GB)
Title: Improvements in or relating to water heating systems
IPC: F16K31/68
Filed: 1963-11-01
Abstract: 1,070,238. Water heating systems. DRAYTON CONTROLS Ltd., and P. D. H. COTTRILL. Sept. 8, 1964 [Nov. 1, 1963], No. 43249/63. Heading F4A. [Also in Division F2] In a water heating system for supplying hot water for domestic use and space heating, and comprising a boiler 1 which has two water circulating systems, one which circulates water through a space heating device 3, e.g. a radiator and the other which circulates hot water through a calorifier consisting of a heating coil 7 in a hot water storage tank 2 providing a hot water supply, e.g. to a tap 9, the temperature of the water in the calorifier is controlled by means of a temperature responsive valve 12 which cuts off the flow in the return conduit 11 to the boiler when the temperature therein reaches a predetermined value. The valve (12), Fig. 2 (not shown) has a temperature sensitive bellows (18) which expand depending upon the temperature of the inflowing liquid at (14) thus causing an attached valve disc (17) to be finally seated on the valve seat (16). The temperature at which the bellows effects the closure of the valve may be varied by adjusting the screw (20) operatively connected to the bellows at (22).
Patent GB-1406086-A (GB)
Title: Digital filters
IPC: G01S13/526
Filed: 1972-09-19
Abstract: 1406086 Active filters SIEMENS AG 19 Sept 1972 [21 Sept 1971] 43308/72 Heading H3U A digital filter comprises a first part F1 and a second part F2 which receives at its input an mth part of the output from the first part, and which is clocked, e.g. via frequency divider FT, at 1/m of the clock rate of the first. The output from the first may be coupled to the input of the second via a circuit M1 which averages m outputs.
Patent GB-1136061-A (GB)
Title: A method of continuously insulating lengths of piping or tubing and apparatus for carrying out the method
IPC: B29C63/00
Filed: 1966-09-28
Abstract: 1,136,061. Insulating pipes. SVENSKA METALLVERKEN A.B. 28 Sept., 1966 [11 Oct., 1965], No. 43381/66. Heading F2P. A length of piping 4 is continuously advanced together with strips of insulating material 5, 6 through a device or matrix 1 which compresses the insulating material around the circumference of the piping, the insulating material being secured to said piping as soon as the same leaves the matrix by a helical winding of overlapping tape 13, the piping being discharged from the matrix while the tape is wound at the same time on to a tubular portion 3 of the matrix to permit the loops of tape being drawn off the tubular portion by the advancing insulating material. The matrix is provided with guides 10, 11, a converging cone 2 and the tubular part 3; the latter may be sharp-edged and slightly conical in the direction of tube feeding. The tape roll 12, which may be braked to tension the tape, is arranged coaxially with the tubing, the tape passing over a roller 14 and a guide 15. The completed pipe is fed by upper and lower devices 18, 22 both of which are adjustable vertically. The upper conveyer belt 18 and the rotating plate 46 are driven from a common motor 32. The insulating material 5, 6 may comprise a mineral wool, the tape may be of fabric, paper, metal foil or metal fabrics and may be self-adhesive or an adhesive may be applied as it is wound. The taped insulated piping may be coated with a moisture repelling, insulating material, e.g. plastics.
Patent GB-1011259-A (GB)
Title: Improvements in or relating to getters for electron discharge tubes and other vacuumvessels
IPC: H01J7/18
Filed: 1962-11-20
Abstract: 1,011,259. Gettering. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Nov. 20, 1962 [Nov. 21, 1961], No. 43866/62. Heading H1D. A method of producing a getter comprises the steps of mixing fine grains (2-30 m.<SP>2</SP>gm.<SP>-1</SP> specific surface area) of hydrides of zirconium, hafnium, titanium thorium, or any alloy of these, with equally fine grains of molybdenum or tungsten to hinder sintering; compressing the mixture under a pressure of 1 metric ton/ cm.; then granulating the compressed mass to form larger grains of about 200-300 microns diameter (Fig. 4) and packing these loosely in a perforated holder. In this way macropores 15 are formed between the larger (" secondary ") grains so that gas can reach the micropores 14 between smaller grains throughout the volume of the getterer. The perforated holder may be a gauze cage (also containing a nickel ring or plate for eddycurrent heating), or a nickel cylinder with gauze ends, or, as shown in Fig. 3, a pair of coaxial gauze cylinders pinched and welded at 11 to form a plurality of bags 9. It is shown that both the absorption rate and capacity of such getters are an order of magnitude higher than with a simple compressed mass.
Patent GB-1214988-A (GB)
Title: Method of moulding
Inventor: WEBB WALTER HENRY
IPC: B29C43/00
Filed: 1967-09-27
Abstract: 1,214,988. Moulding decorated articles. BRITISH INDUSTRIAL PLASTICS Ltd. 19 Dec., 1968 [27 Sept., 1967], No. 43969/67. Heading B5A. [Also in Division B6] A decorated article is produced by  (a) shaping and partly curing a thermosetting synthetic resin composition, (b) applying to the part cured article a decorative sheet and a layer of particulate thermosetting resin so that the sheet is sandwiched between the article and particulate resin and (c) applying heat and pressure to the assembly to render the particulate resin mobile so that it spreads over the sheet to form a continuous layer and impregnate the sheet and to cure both the resins to a fully thermoset state. The decorative sheet may be paper or a textile material and may be coloured or have a pattern printed on it. It may be transparent or opaque and may be impregnated with resin before use. Preferred materials are α-cellulose and rayon. The moulded resin is preferably melamine-formaldehyde, urea-formaldehyde or phenol-formaldehyde and the particulate resin melamineformaldehyde cyclohexylguanamine-formaldehyde, acetoguanamine-formaldehyde or benzoguanamine-formaldehyde. The shaping is preferably carried out in a compression mould, which is closed slowly after the decorative sheet has been inserted to prevent damage to it.
Patent GB-1024662-A (GB)
Title: Improvements in or relating to electrical signalling systems
Inventor: BROOKE RAYMOND
IPC: H04L1/18
Filed: 1961-12-08
Abstract: 1,024,662. Telegraphy. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. Dec. 5, 1962 [Dec. 8, 1961; Aug. 16, 1962], Nos. 44066/61 and 31500/62. Heading H4P. The invention provides an error-correcting signalling system in which at the receiver there is prepared a perforated or magnetic tape which is identical to that at the transmitter despite the occurrence of noise or multilation during transmission. The system includes a channel connecting the receiver to the transmitter over which are sent supervisory signals. In all the embodiments these signals are either signals requesting repetition or are signals indicating normal conditions. These two types of signal may be represented respectively by one tone and another tone, or one tone and a plurality of tones, or by simultaneous tones and alternate tones. Absence of any tone, due to line break, causes the transmitter to stop. In a first embodiment detection of an error at the receiver causes recording to stop and a two-tone signal to be sent to the transmitter. Upon receiving this signal the movement of the transmitter tape is reversed and a command signal sent to the receiver which causes the receiver tape also to be reversed. The supervisory signal now changes to a single tone and when the transmitter detects this it reverses its tape again so that the tape is now moving in the correct direction. A second command signal is sent to the receiver, which reverses its tape to normal and recording is resumed. The tapes at receiver and transmitter are now in phase and as the previously mutilated character is recorded directly after the last-recorded correct character the records will be identical. A modification of this embodiment employs a non-reversible recorder. When an error is received the tape movement and recording are stopped and a reversible counter is set in operation, it being reversed under control of the first and second command signals from the transmitter. The recorder is set in motion again when the counter reaches zero after the second command. In a second embodiment, reception of a mutilated character sets in operation a timing device which blocks the recorder until it has completed its timing cycle. A supervisory signal sent to the transmitter sets in operation another timing device which reverses the direction of the tape at the start of its cycle and restores it to the normal direction at the end of its cycle. The periods of the two cycles are so chosen that the tapes are in phase at the end of'the cycles. Should noise simulate the supervisory signal sent upon reception of an error, it is necessary to ensure that a repetition cycle is initiated. This is done by causing the transmitter to send a mutilated signal on reception of a real or simulated supervisory signal.
Patent GB-1094770-A (GB)
Title: Centrifugal clutch
IPC: F16D43/10
Filed: 1966-10-03
Abstract: 1,094,770. Friction clutches. R. M. WYMAN. Oct. 3, 1966, No. 44122/66. Heading F2C. A centrifugally engaged friction clutch consists of a driven disc 61 between driving discs 55, 56 which are moved axially into engagement by flyweights 68 pivoted on the arms 67 of a spider 65, the weights having cam faces bearing directly against the end disc 56. The innermost disc 55 is tapered radially, the other discs being of uniform thickness, and the discs 55, 56 are normally held separated from disc 61 by a central coil spring 59. The flyweights 68 are formed with circumferential grooves 80 for the reception of an encircling loading spring 79. The axial position of spider 65 in relation to the friction discs may be varied by screw-threaded adjustment on a sleeve 23 keyed to the input shaft 12.
Patent GB-1341490-A (GB)
Title: Electrostatic extraction apparatus
IPC: B03C3/16
Filed: 1971-09-22
Abstract: 1341490 Electrostatic separation ONO CEMENT CO Ltd and S MASUDA 22 Sept 1971 [28 Nov 1970] 44122/71 Heading B2J An electrostatic precipitator having a gas inlet 26 and a gas outlet 34 comprises collecting electrodes 5, e.g. tensioned plates of stainless steel, arranged in three stages 2, 3, 4. Water containing material to absorb gaseous contaminants such as SO 2 , SO 3 , H 2 S and NO 2  is supplied from a tank 19 to nozzles 7 and is sprayed onto the electrodes 5 in stage 4, the tank being supplied with water and said material by pipes 20 and 21 respectively. Dust dislodged from the electrodes 5 in stages 2 and 3 by rapping mechanisms 29, 20 falls into hoppers 31, 32 for removal by a conveyor 33, whilst the slurry produced in stage 4 is collected in a tank 10, from which it is fed by way of a pipe 13 and nozzles 16 to the interior of a drying tower 15 provided at the gas inlet 26 so that the slurry is dried by the contaminated hot gases before these pass into the housing 1 of the precipitator. Contaminant-gas absorbing material may be added to the slurry by way of a pipe 17. Thus gaseous contaminants in the gas to be purified are removed partly in the tower 15 and partly in stage 4, whilst the particulate contaminants are removed in stages 2, 3 and 4, the purified gas being finally discharged to the atmosphere, after reheating if necessary, by way of the outlet 34 and a stack 35. A centrifugal separator 11 in the pipe 13 concentrates the slurry, separated water being returned to the tank 10. Preliminary dust extraction may be effected by a mechanical separator, e.g. a cyclone. A modified drying arrangement for the slurry is described with reference to Fig. 2 (not shown).
Patent GB-944655-A (GB)
Title: Process for improved electrostatographic development and means therefor
IPC: G03G15/095
Filed: 1959-12-29
Abstract: 944,655. Developing electrostatic images. RANK-XEROX Ltd. Dec. 29, 1959 [Jan. 2,1959], No. 44141/59. Heading G2H. Electrostatic images are developed by the application, e.g. by cascading, of granular ferromagnetic carrier particles bearing electroscopic toner particles which deposit to form the image and the carrier particles adhering to the image surface are removed by scavenging a magnetic field without disturbing the toner image. For an image on a flat plate a wide bar magnet may be used supported on marginal shoulders beyond the plate while for a drum surface the scavenging magnetic device may be of the kind used as a developer applicator in Specification 944, 654. Where an endless belt having a coating of photoconductive material itself normally insulating or suspended in an insulating binder is used, the belt passing successively through corona charging 30, photographic contact printing 40, developing 50, scavenging 20, optical projection, A. C. transfer 60, and brush cleaning 70 stations the development is effected by cascade using a bucket conveyer and scavenging is achieved at 20 by a rotating magnetic wheel 31 about which and an idler roller 33 disposed over the developer container is entrained a belt 23 of non-magnetic material such as brass. Instead of the contact printing arrangement shown, the charge image may be formed by means of a cathode ray tube having pin form electrodes for applying a pattern of dot charges. The optical projection system 36.....39 is of the specular reflection type as in Specification 926, 361. Instead of the gravity cascade development arrangement, the particulate developer may be deposited on a horizontal run of the endless belt. Specifications 675,398, 679,715, 686,466, 696,515, 768,293 and U. S. A. Specification 2, 774, 921 also are referred to.
Patent GB-1028369-A (GB)
Title: Thermally responsive power means
IPC: G05D23/12
Filed: 1963-11-11
Abstract: 1,028,369. Thermal switches. WILCOLATOR CO. Nov. 11, 1963 [Nov. 23, 1962], No. 44359/63. Heading H2B. [Also in Division G1] A thermally responsive control device comprises an expansible hollow element, e.g. for actuation of an electrical switch, a volatile liquid in the element, and a material in the element having a non-wettable surface including hair-like projections therefrom in contact with the liquid, e.g. polytetrafluoroethylene. The expansible element comprises a capillary tube 36 sealed at one end and communicating at the other end with a chamber 34 closed by a flexible diaphragm 31. The diaphragm is formed so as to be snap acting between the dotted and full line positions shown in Fig. 1. The diaphragm engages a rod 25 to move a bridging contact 24 carried by the rod to open and close a circuit between contacts 13a, 14a carried in a cupshaped housing 12, e.g. of "Bakelite" (Registered Trade Mark). A bowed leaf spring 28 tends to keep the contacts closed. The pressure of the liquid in the hollow element is below atmospheric and is such that the diaphragm 31 normally remains in the dotted line position shown in Fig. 1, so that the contacts 13a, 14a, 24 are closed. As the temperature rises, the liquid vapour pressure rises to eventually move the diaphragm to the full-line position of Fig. 1 to open the switch contacts. This arrangement ensures that if a leak of the liquid should occur, the device will " fail-safe " with the switch contacts open. The liquid used may be water with different percentages of methyl or ethyl alcohol, depending on the actuation temperature required (examples are given in the Specification), or pure distilled water or di- or tri-ethylene glycol. The polytetrafluoroethylene contained in the hollow element is in the form of a strand 40 of "Teflon" (Registered Trade Mark) or of a coating of "Teflon" (Registered Trade Mark) on a stainless steel wire. The surface of the polytetrafluoroethylene is abraded to form hairlike projections 42 which assist in ensuring that the device always operates at the same known temperature.
Patent GB-1357094-A (GB)
Title: Pest-control agents
IPC: C07D319/20
Filed: 1971-04-19
Abstract: 1357094 Pesticidal application of juvenile hormones F HOFFMANN-LA ROCHE & CO AG 19 April 1971 Divided out of 1356018 44427/73 Heading A5E [Also in Division C2] A pest-control agent contains one or more customary insecticides and/or acaricides and one or more compounds having juvenile hormone-like activity and corresponding to the general formalu: wherein Z represents the group -CH 2 -C # CH or a group of the general formula: in which the dotted lines represent optional bonds and R 9  and R 10  represent methyl or ethyl. The insecticide/acaricide may be selected from a large number of specified carbamates, pyrethrins, chlorinated hydrocarbons, phosphoric acid esters, thiophosphoric acid esters and miscellaneous compounds.