baber/WOPTO huggingface dataset:
Patent GB-878105-A (GB)
Title: Improvements in or relating to electronic switching devices
IPC: H04Q3/52
Filed: 1958-11-07
Abstract: 878,105. Transistor switching circuits. COMPAGNIE INDUSTRIELLES DES TELEPHONES. Nov. 7, 1958 [Nov. 8, 1957], No. 35898/58. Class 40(6) A switching circuit comprises a transistor having two electrodes connected to the points across which a connection is to be made and the third electrode having its potential and thus the state of conductivity of the transistor controlled by a gas discharge tube. Fig. 1 shows a transistor circuit in which it is required to make a connection between points A and B in dependence upon the state of conductivity of the PNP junction transistor T. When gas discharge tube L is not conducting the base of transistor T is positive with respect to the emitter and the transistor is blocked. When switches H and V are closed gas tube L conducts the voltage drop across resistor L being sufficient to cause the transistor T to conduct. The transistor may be blocked again by interrupting the current flow through gas tube L by opening switch V. An alternative arrangement of triggering the gas discharge tube is described, Fig. 2, not shown. Fig. 3 shows a matrix comprising m horizontal rows and q vertical columns only rows X1, X2 and Xm with columns Y1, Y2 and Yq being shown. The connections between any given row and any given column being determined by the state of conductivity of the transistor connecting the cross over points. As described in connection with Fig. 1 each transistor is controlled in dependence upon the state of conductivity of an associated gas discharge tube. Only that gas tube will be struck and its associated transistor rendered conductive which by operation of the associated switches has appropriate potentials applied to its anode cathode and trigger electrodes. If for example tube L21 has been struck so that transistor T21 bridges row X2 and column Y1 then the voltage drop across resistor R1 c prevents the firing of any other gas tube in column Y1. If the voltage Vs is suppressed the tube L21 memorises its operation and continues to operate between anode and cathode so that to stop operation it is necessary to open switch V1 in the circuit which provides the appropriate cathode potential. Specification 861,139 is referred to.
Patent GB-303151-A (GB)
Title: Improvements relating to rotary electromagnetic delay devices
IPC: H01H43/10
Filed: 1928-12-05
Abstract: 303,151. Rio, A., and Levy, L. Dec. 30, 1927, [Convention date]. Synchronizing dynamo-electric machines; switching systems.-In order to delay the operation of a relay 9, Fig. 1, which may be used for controlling a power sub-station from two central stations, for automatically synchronizing alternators, or for a wireless call apparatus, its circuit is shunted by a rotary electromagnetic device consisting of an armature 1 without iron rotating in a magnetic field 2. The current through the relay increases with the counter-electromotive force developed by the armature until this reaches its maximum speed, so that the delay may be adjusted by varying the potential of battery 6, the value of resistance 7, or the strength of the magnetic field in which the armature rotates. The armature may have a divided winding or two separate windings, one of which acts as a motor and one as a generator. The field may be produced by a permanent magnet or by an electromagnet with one or more poles with simple or compounded winding. Controlling power sub-station C, Fig. 2, from two central stations A, B. When the central stations A, B are working, the switches 20, 21 are open and the field magnets 16, 17 of the armature 1 are without current, so that if the relay 11 at the sub-station closes its circuit, the armature 1 cannot rotate and the relay 8 is not energized. If one of the central stations is out of action, contact 20, say, is closed and the field magnet 16 is energized, but the field strength is such that, if the relay releases, the armature 1 can only rotate slowly so that relay 8 still remains de-energized. If, however, both stations A, B are out of action, both magnets 16, 17 are energized and, if relay 11 releases, the armature 1 rotates at such a speed that the relay 8 energizes and throws in the unit U after a delay determined by the armature 1. Automatic synchronizing of alternator. The synchronoscope may be modified to act as a relay to close the circuit of a delay-action relay of the kind shown in Fig. 1, which in turn switches in the unit.
Patent GB-726768-A (GB)
Title: Improvements in anti-skid braking systems for automotive vehicles
IPC: B60T8/26
Filed: 1953-12-29
Abstract: 726,768. Fluid pressure vehicle brakes. DUBOVICK, W. A., KOZAK, J. P., and KOZAK, P. A. Dec. 29, 1953 [Jan. 19, 1953], No. 36057/53. Class 103 (1). It is well known, as shown in Fig. 2, that when a vehicle is braked, the weight of the vehicle Q by acting at its mass centre, has the effect of producing a greater reaction F at the front wheels than the reaction R at the rear wheels. It thus follows that if the same brake pressure is applied to both front and rear wheels, the rear wheel brakes will lock their wheels first. According to the invention, it is proposed to avoid this condition by inserting a valve device 100 in the hydraulic line 102, 103, leading from the master cylinder to the rear wheel brakes whereby the brake pressure at the rear wheels may be limited to an arbitrary maximum value. The valve device 100, as shown in Fig. 7, includes a valve member 4 which controls the fluid supply to the rear brake conduit and is held away from a seating 7 only as long as the pressure in the conduit 103 is insufficient to cause a cover member 14 to compress a spring 16. This compression of the spring 16 may be adjusted to suit different road conditions by a knob 25 and locking screw 24 located adjacent a calibrated dial in the dashboard, as shown in Fig. 8. In a modification, as shown in Figs. 9 and 10, adjustment of the spring 16 may also be made for vehicle load. An arm 157, linked to the wheel suspension, compresses the spring through a bell crank. Adjustment for road conditions is made by a lever 168 which through linkwork 166, 162, 171, 17C causes a diagonal sliding of the valve assembly 100 on the slots 153, 154 sc as also to cause a modification of the spring compression.
Patent GB-925129-A (GB)
Title: Production of ornamental dyed effects on textile materials
IPC: D06P5/12
Filed: 1961-10-09
Abstract: A process for producing ornamental effects on textile materials containing synthetic polyamides comprises first covering selected areas of the material so as to exclude moisture under the conditions of the following step then exposing the material to moist heat for a time sufficient for the moist heat to penetrate the uncovered portions of the surface finally removing the covering and immersing the treated material in a dyebath containing a dye suitable for dyeing polyamides.  Specified dyestuffs are acid dyes especially neutral dyeing metallized azo dyes.  The textile materials may be fabrics, yarns, threads or carpeting.  The preferred source of moist heat is saturated steam at 212 DEG -260 DEG F. which is normally applied for 10-30 minutes in an autoclave.  The protective covering may be a film of natural or synthetic rubber, vinyl polymers and copolymers, foils of copper or especially aluminium, wooden shapes or metal members.  Examples of the differential dyeing of skeins and carpets of nylon 6 and 66 are given.
Patent GB-1514432-A (GB)
Title: Superposed shed loom
IPC: D03D47/12
Filed: 1976-09-01
Abstract: 1514432 Superposed shed looms SOC ALSACIENNE DE CONSTRUCTIONS MECANIQUES DE MULHOUSE I Sept 1976 [5 Sept 1975] 36237/76 Heading D1E A superposed shed shuttleless loom is arranged such that perpendicular bisectors M 1 , M 2  of the segments of the lower layers of each shed between the reeds rearmost position 10 2  and the intermediate position 10 1  at which weft insertion begins pass substantially through the axis 0 about which the reed is pivoted. This gives the weft insertion means e.g. flying needles 40, 42 an optimum trajectory with their distance apart D<SP>1</SP> being constant. As shown in Fig. 3 the reed is inclined, an alternative embodiment, Fig. 2 (not shown), has the reed plane passing through the axis 0, which leads to the perpendiculars M 1 , M 2  being coincident and the lower layers being parallel. Also in this embodiment the upper and lower sheds intersect, the intersection line being no further forward than the rearmost position of the reed. The loom may be employed where a high output is desired or for producing velvet or plush fabrics.
Patent GB-1524708-A (GB)
Title: Controller for fluid pressure to an auxiliary device
IPC: B62D5/097
Filed: 1975-09-03
Abstract: 1524708 Power steering systems EATON CORP 3 Sept 1975 [18 Sept 1974] 36291/75 Heading B7H An hydraulic fluid control device for supplying a primary device, such as power steering cylinder, and an auxiliary device comprises a valve and a metering pump which supplies the primary device when required and supplies the auxiliary device when the primary device is not in use. The controller comprises a housing 53 mounting a rotatable or axially movable spool valve 15 and a greater type metering pump 29 and is -provided with inlet, outlet, steering cylinder control and auxiliary ports. The rotary valve comprises a spool 77 connected to the steering wheel and a relatively rotatable surrounding sleeve 79 biased to a neutral position relative to the spool by springs 88. In the straight ahead steering position the valve is in the neutral position and fluid entering the housing passes via sleeve -grooves 97L, 97R and through parts 99L, 99R which respectively communicate axial slots 111, 113 in the spool (Fig. 3, not shown). Port 95 in groove 93 on the sleeve overlaps slots 111, 113 and passes fluid to the auxiliary part-(117) (Fig. 4, not shown). On rotation of the steering wheel the sleeve and spool move to cut off progressively the connection to the auxiliary -port and port 99L or 99R is brought into communication with slot 107L or 107R and groove 105L or 105R. Meter parts 101L or 101R in groove 105L or 105R pass fluid to the metering device 29 which delivers fluid to the other of the grooves 105R or 105L (Fig. 4, not shown). Slots 109R or 109L extending from groove 105R or 105L pass fluid to sleeve parts 103R or 103L wich are connected to one side of the steering cylinder. The other side of the cylinder returns fluid to the other of ports 103L or 103R which, in the displaced position of the valve, connected with exhaust ports 115L or 115R in the spool.
Patent GB-1005431-A (GB)
Title: Improvements in or relating to voltage or current phase shifting devices
Inventor: MAINE ARTHUR EDWARD
IPC: H03K5/13
Filed: 1960-10-24
Abstract: 1,005,431. Phase shifting; automatic voltage control. DE HAVILLAND AIRCRAFT CO. Ltd. Oct. 24, 1961 [Oct. 24, 1960], No. 36484/ 60. Heading H2F. [Also in Division G3] A device for changing the phase of a square waveform E u  comprises means for applying said waveform E u  across a load and means operable to supply across said load, for a period of time commencing at the beginning of or terminating at the end of each half cycle, a waveform- 2E u  such as to produce a waveform Ep with the desired phase shift. In the embodiment described one secondary winding 7 of a transformer 4 produces a reference voltage e 1  = ¢E 2  across a load resistor R L  which forms, with the resistor R s , a potential divider, and a magnetic amplifier M.A. acts as a switch to supply across the load R, either the voltage E 1  or O as its impedance is effectively O or infinite. For a non-variable phase-shift, a saturable reactor may replace the magnetic amplifier. Other switching devices, e.g. transistors, S.C.R's valves, thyratrons and switches may be used to replace the magnetic amplifier.
Patent GB-1001356-A (GB)
Title: Substituted anthranilic acid esters
IPC: C07D215/227
Filed: 1963-09-17
Abstract: The invention comprises compounds of general formula <FORM:1001356/C2/1> wherein R1 and R2 are halogen, or R1 is methyl and R2 is halogen, or R1 is halogen and R2 is methyl, or R1 is halogen and R2 is ethyl; R3 is hydrogen, halogen or methyl; and their preparation as exemplified, comprising (1) reaction of corresponding acids or their reactive derivatives with esterifying agents, or (2) reaction of 2-halo or amino-benzoic acid esters with, respectively, amino- or halo-R1R2R3-benzenes.  N - (R1R2R3-Phenyl)anthranilic acids and their salts are prepared by (1) reacting potassium o-halobenzoates with R1R2R3-anilines using an unreactive solvent, a copper-containing catalyst and a proton-acceptor, or (2) hydrolysis of the lower alkyl esters; acid halides are prepared with, for example, thionyl chloride, and acid anhydrides by reacting the acid chloride and sodium salt.  Pharmaceutical compositions comprise compounds I with diluents and excipients.  Forms are mentioned for oral (tablets, pills, sachets, powders, capsules) and parenteral (solutions, suspensions) administration.  The compounds are anti-inflammatory and hypycholesteremic.
Patent GB-1330740-A (GB)
Title: Textile-testing apparatus
IPC: G01N33/36
Filed: 1971-08-04
Abstract: 1330740 Yarn testing apparatus ZELLWEGER Ltd 4 Aug 1971 [4 Aug 1970] 36650/71 Heading D1F Testing apparatus for measuring the crosssection of yarns, rovings or slivers comprises an automatic yarn-changing mechanism which is operable at the end of a predetermined testing period to take a yarn 6 from a spool in a prepared store of material to be tested and to introduce it into a measuring unit 1 and into a conveyor e.g. rollers 3, 4, the apparatus being characterized by the provision of an electrical circuit which automatically co-operates with the yarn-changing mechanism to monitor the functional settings of the testing apparatus. The yarn-changing mechanism comprises an arm 7 movable between two end positions 7', 7", the arm 7 carrying a yarn gripper 8. At the end of a preset time interval, the arm 7 starts to rotate from position 7' to position 7", the gripper 8 opening and closing to grip the first yarn 6 of a prepared group of yarns. Simultaneously with the rotation of the arm 7, a cutter 13 is actuated to cut the previously tested yarn; also, the electrical circuit operates to monitor the measuring unit to ensure that the unit is indicating absence of yarn. The yarn is carried by the arm 7 and gripper 8 and introduced into the appropriate cross-section measurer of the unit 1 by guides 11, 12 which are adjustable in slides by knobs 9. The yarn is also introduced into delivery rollers 3, 4, the gripper 8 opens to release the yarn, and the yarn to be tested is drawn through the measuring unit 1 by the rollers 3, 4 for the preset time, at the end of which, the operation is repeated. During the initial part of the testing measurements, the circuit operates to determine and set the mean value cross-section of the yarn; thereafter, only fluctuations from this mean value are indicated.
Patent GB-434357-A (GB)
Title: An improvement in chicken brooders
IPC: A01K31/18
Filed: 1933-12-30
Abstract: 434,357. Rearing-appliances. POUND, W. A., Poultry Appliance Works, Bewdley, Worcestershire. Dec. 30, 1933, No. 36678. [Class 5 (ii)] The floor of a brooder is formed by wire mesh 13 and carries two metal cones, the outer one resting on the floor and being separated by a short distance from the other cone 6 which extends downwardly through the floor. The hot gases from a lamp 1 pass upwards through an aperture 3 in a metal droppings tray 2 into the cone 6 which is closed at the top but is provided with a flue pipe 7 extending from its side to the outside of the brooder. The fresh air for the chickens enters the brooder through openings 9 and is drawn between the two cones escaping into the brooding chamber through openings 11 at the top of the outer cone. The brooder may have a sleeping portion divided off by a removable curtain and may be provided with a feeding trough 16 fitted with a glass top 19.
Patent GB-940498-A (GB)
Title: Record sheets bearing a cryptographic device for the concealment of graphic data
IPC: G09C5/00
Filed: 1962-09-27
Abstract: 940,498. Comparing signatures; cheques &c. NATIONAL CASH REGISTER CO. Sept. 27, 1962 [Oct. 24, 1961], No. 36678/62. Drawings to Specification. Headings B6A and B6X. A signature &c. is hidden in a random array of markings and is displayed by superimposing a mask having light transmitting passages arranged in correlation with the random array to reveal the signature. Preferably the markings are coarse and fine concealing respectively the general shape and detail of the signature but the coarse markings may be dispensed with. In a first form, a background of coarse white marks with fine black grains therein and fine white grains therebetween is formed e.g. from material which changes from dark to light and vice versa when exposed to radiation of different wavelengths. A code screen is then applied over the background and has a random array of fine apertures. On exposure, any black area coinciding with a screen aperture is removed. A transparent screen having an opaque signature thereon is put over the code screen and, by exposure, fine black grains are created on the background again except where the signature is. To read the completed record card, it is viewed through an identical code screen and the signature appears as a white dot trace on a black ground. As a further precaution in this form, a second code screen is placed over the background with the concealed signature, this screen having a second random distribution of apertures and a black grain is written in to the background wherever there is an aperture. The signature screen is then replaced and the black grains are removed except where signature is. When the background is viewed through the first and second cooling screens respectively, the signature appears as black on a white-dotted ground or as a white dot trace on a black ground. In a second form, a code screen with random fine apertures is applied to the same background and, by exposure, black grains are created wherever there is an aperture. Then the signature screen is applied and white grains are created through the apertures except where the signature is. When viewed through the coding screen the signature appears as a black trace on a white-dotted ground. An account book is provided on its inside cover with a transparency of the background having the concealed signature. The teller has a viewing screen identical to the coding screen used in making the original background and, when the customer presents the account book and a drawn cheque, can check the signature. The cover has pins for justifying the viewing screen. Specification 845,939 is referred to.
Patent GB-1161132-A (GB)
Title: Improvements relating to Process Cameras or Enlargers.
IPC: G03B9/08
Filed: 1966-08-16
Abstract: 1,161,132. Photographic apparatus. K. SCHUMACHER and E. SCHUMACHER [trading as KLIMSCH & CO.] Aug. 16, 1966 [Aug. 21, 1965], No. 36709/66. Heading G2A. In process cameras and enlargers of the kind having a halftone glass screen through which a uniform pre-exposure (flash exposure) is applied to the entire surface of the lightsensitive material prior to the main exposure, there is provided mechanism whereby, once the lens aperture for the main exposure has been chosen, the lens aperture for the flash exposure is automatically set to a predetermined ratio of this chosen aperture when the flash-lamp 3 is swung in front of the lens 4. Movement of the flash-lamp either rotates an iris setting ring 6 through an angle predetermined by the position of a driving pin 12, or rotates the lens holding disc 5 Fig.1, 2 (not shown). The mechanism may be used in a camera having a second lens and a mirror system for making the main exposure Figs. 5, 6 (not shown), in which the flash-lamp and one mirror (23) interchange their positions for flash and main exposures. In a modification of Figs. 5, 6, not described in detail, the flash-lamp remains in front of the first lens and the mirror (23) is moved to change the lens aperture.
Patent GB-1275272-A (GB)
Title: Solid state scan converter utilizing electron guns
Inventor: PRUETT GEORGE RICHARD
IPC: G11C11/23
Filed: 1969-07-22
Abstract: 1275272 Television TEXAS INSTRU. MENTS Inc 22 July 1969 [4 Oct 1968] 36736/69 Heading H4F [Also in Division H1] A scan converter e.g. for changing a circular scan to a raster-type scan, comprises a solid state target disposed between a pair of opposed electron guns. The target comprises a sheet of N-type semi-conductor material 24 e.g., N-type silicon, with a plurality of discrete areas 26 of P- type semi-conductor material disposed on the back surface. In operation a beam of electrons with a constant low energy level from the read gun is scanned across the back surface according to a preselected scan pattern and reverse biases each of the discrete areas to form depletion layers i.e. a plurality of semi-conductor diodes are formed. The target is now scanned by a beam of electrons from the write gun at a relatively high enegy level and modulated by input information so that the desired image is stored on the target after one complete scan. Holeelectron pairs are generated which diffuse through the N-type semi-conductor and vary the charges of the discrete areas from a reverse biased condition to a more positive condition. This stored image is sensed by the read gun which again scans the back surface of the target and recharges each N-P junction diode. This recharging generates an alternating current signal in the N-type body 24 which is sensed by the output sensor 30. Scanning of the read gun beam is synchronized with the sensing output. To eliminate noise due to excess electrons supplied by the write gun, a voltage is produced across resistor 27 which is representative of the write electron gun signal, and this voltage is amplified, inverted and added to the output of sensor 30.
Patent GB-407797-A (GB)
Title: Improvements in process of rendering fuel briquettes hard and smokeless
IPC: C10L5/28
Filed: 1932-12-30
Abstract: 407,797. Composition fuel. DEHN, F. B., 103, Kingsway, London.-(Maurel Investment Corporation ; 54, Custom House Street, Providence, Rhode Island, U.S.A.) Dec. 30, 1932, No. 36952. [Class 50.] Fuel briquettes made from ground anthracite or carbonized bituminous coal are rendered hard and smokeless by being heated to about 500‹ F. to drive off completely moisture and lighter oily fractions and then gradually cooled within the furnace to about 300‹ F. in the presence of a very small percentage of oxygen or air. The partial vacua caused by the cooling assist the penetration by the air, which may be diluted with inert gases such as combustion products.
Patent GB-340392-A (GB)
Title: Improvements in toilet and similar fixtures which are used for advertising purposes
IPC: G09F23/02
Filed: 1930-09-03
Abstract: 340,392. Displaying advertisements. GILLGAN, W. V., 128, York Drive, Glasgow, and McGHEE, C. M., Eglinton Place, Eaglesham, Renfrewshire. Sept. 3, 1930, No. 37158/29. [Class 3 (i). ] Reel and endless web apparatus; actuating.- Relates to devices of the type comprising a casing having a window at which is displayed an advertising band carried on rollers on one of which are mounted toothed wheels which contact with the periphery of a toilet paper roll so that the band is moved at each withdrawal of paper. The invention consists in providing apertures 10 in the casing 1 through which the toothed wheels 8 on the roller 3 project to engage the paper roll 6. The upper roller 4 is floatingly mounted and is pressed by springs 4<1> to tension the band 5.