baber/WOPTO huggingface dataset:
Patent GB-1204667-A (GB)
Title: Improvements relating to process and apparatus for obtaining an electrical pulse frequency from an analogue signal
IPC: H03M1/00
Filed: 1967-12-11
Abstract: 1,204,667. Generating quotients. SHELL INTERNATIONALE RESEARCH MAATSCHAPPIJ N.V. 11 Dec., 1967 [12 Dec., 1966], No. 56219/67. Heading G4G. [Also in Division H4]  In a circuit for connecting an analogue signal to a corresponding pulse rate, the analogue signal Vi is supplied via a resistor R 1  to an integrator A 1 , C 1  and when the output of the integrator reaches a predetermined value a trigger T is operated and provides a pulse V ref which charges a capacitor C 2  via resistor R 2 . Capacitor C 2  is in the input circuit of a high negative gain amplifier A 2  across which are connected impedance networks R 3 , D 1  and R 4 , D 2  passing current in opposite directions. When the capacitor C 2  is charged by the pulse from T a current of the same magnitude passes via R 3 , D 1  to the input of amplifier A 2  which is virtually at earth potential and when the pulse from T ceases, the capacitor C 2  is discharged through R 4 , D 2 . The resulting current pulse through R 5  is of such polarity that C 1  is discharged by a specific amount corresponding to the change on C 2  so that the trigger T is restored and the cycle is repeated. The output pulses of variable repetition frequency, which is shown to be proportional to Vi/V ref, may be read off at F, or from the output of A 2 , the junction R 4 ' D 2 , or the junction R 3 , D 1 . The trigger T may control a multivibrator, Figs. 2 and 3 (not shown) supplying pulses to charge the capacitor C 2 . In a modification Fig. 4, the amplitude of the pulse V ref is made adjustable, or to correspond to a second analogue input signal E. Signal E is supplied via an operational amplifier A 3  and a D.C. amplifier 51, 52 to terminal B which is connected to R 2 , Fig. 1. The output from trigger T gate the transistor 53 so that the output voltage at B is pulsed accordingly. When both Vi and V ref are made variable the output frequency is proportional to the quotient of the two signals.
Patent GB-1222020-A (GB)
Title: Improvements in or relating to an electrical switch
IPC: H01H19/58
Filed: 1968-11-29
Abstract: 1,222,020. Mechanical switches. HOLZER PATENT A.G. 29 Nov., 1968 [4 Dec., 1967], No. 56747/68. Heading HlN. An electric switch mounted on a base 1 provided with contacts 2, 2a, and recesses 7, comprises a wiper arm 3 having contacts bridging contacts 2, 2a and a locating member 13 adapted to be seated in one of recesses 7 to positively locate wiper arm 3 and raise wiper arm 3 between switch positions such that the wiper arm contacts are raised clear of base 1 between switch positions. There is play between wiper arm 3 and locating member 13 which is smaller than the movement in the same direction of member 13 such that when wiper arm 3 is rotated the wiper arm contacts slide a little distance before being lifted by locating member 13. Base 1 is a printed circuit board. Wiper arm 3 is guided by two projections 15 on locating member 13 and a flat spring 4, Fig. 3 (not shown), or a coil spring, bears on projections 15 to press member 13 against the base 1. On the underside of locating member 13 is a hemispherical projection 11, Fig. 3. The switch is covered by a hollow cylindrical cap .5 which serves as a switch knob having a projection 8 by which it can be turned (alternatively the outer surface of cap 5 is knurled) and two downward extensions which engage the edge of the printed circuit board 1 when knob 5 is turned to limit its movement in either direction. Instead of locating member 13 having a hemispherical projection 11 it may have a plastics or metal ball. In a modification, Figs. 5, 6 (not shown), instead of locating member 13, the wiper arm has a central tongue holding a ball locating member, the end of the tongue projecting through an opening in the end of the wiper arm so that when the ball comes out of recess 7 the end of the tongue lifts the wiper arm, the plug being between the tongue and the upper edge of the opening in the end of the wiper arm.
Patent GB-1117070-A (GB)
Title: Polymers from dihydrazides and cyclic dianhydrides
IPC: C08G73/08
Filed: 1966-12-30
Abstract: Polymers having the recurring unit <FORM:1117070/C3/1> where R is a direct link or an organic group containing 1 to 24 carbon atoms and R1 is a cyclic organic group containing 5 to 24 carbon atoms are made by reacting a dihydrazide of formula <FORM:1117070/C3/2> with a dianhydride of formula <FORM:1117070/C3/3> Many dihydrazides and dianhydrides are specified. The reaction may be effected in an organic solvent and the polymer may be precipitated from this by adding water.  The resulting polymers may then be cured (e.g. while as a coating on a surface) to produce thermoset polymers of formula <FORM:1117070/C3/4> The examples disclose reacting 3,4,31,41-benzophenone tetracarboxylic acid dianhydride or cyclopentane tetracarboxylic acid dianhydride with terephthalic dihydrazide, isophthalic dihydrazide, adipic dihydrazide or azelaic dihydrazide.ALSO:Articles, especially metal pipes for use in oilfields, are coated by applying to them a solution in an organic solvent of a polymer of formula:-  <FORM:1117070/B1-B2/1> where R is a direct link or an organic group containing 1 to 24 carbon atoms and R1 is a cyclic organic group containing 5 to 24 carbon atoms and obtainable by reacting a dihydrazide with a dianhydride.  The articles are then heated to cause the polymers to thermoset to polymers of formula:-  <FORM:1117070/B1-B2/2> In Example 1, a solution in dimethyl formamide of a polymer obtained by reacting terephthalic dihydrazide with 3, 4, 3\sv, 4\sv-benzophenone tetracarboxylic acid dianhydride was applied to a metal pipe and the pipe then heated to 200 DEG C.
Patent GB-1223590-A (GB)
Title: Method of sealing glass
Inventor: WERNER HERBERT CLAIRE
IPC: H01J9/233
Filed: 1968-12-10
Abstract: 1,223,590. Sealing glass. RCA CORPORATION. 10 Dec., 1968 [12 Dec., 1967 (2)], No. 58594/68. Heading C1M. A tubular glass stem 14 is sealed inside the open end of a tubular glass bulb 12, by positioning stem and bulb coaxially so that their respective walls overlap, reducing the pressure in the annular space so created, and successively heating circumferential segments of the bulb wall to at or above the glass softening temperature whilst maintaining adjacent segments at below the softening point, so that segments of bulb wall collapse on to the stem in succession to form a seal 42, whilst the unsoftened segments maintain the original relative position of bulb and stem. The successive heating of circumferential portions may be achieved by the heating means 32 shown, which comprises a gas manifold 34 in the form of a ring, with a gas burner 40 attached to it. By rotating the ring, the flame from 40 can be directed in turn on segments of the bulb's circumference. The pressure reduction may be achieved by seating the bulb 12 over a passage 31 leading to vacuum pumping equipment. In one use of the method, a vidicon camera tube may be constructed, in which case there is a layer of photo-conductive material 18 on the face-plate 16 of the bulb. Such a layer must be protected from ambient gases, and this is achieved by passing an inert flushing gas (N 2  or Ar) in through tube 70, such that ambient gases are swept by the inert gas out through the vacuum pumping system.
Patent GB-1247360-A (GB)
Title: Stop motions in smallware looms
Inventor: MUELLER JAKOB
IPC: D03J5/00
Filed: 1968-12-10
Abstract: 1,247,360. Loom stop motions. J. MULLER. 10 Dec., 1968 [24 Jan., 1968], No. 58616/68. Heading D1E. A stop motion for a smallware loom includes, for each shuttle 1 a first means 11 for sensing loss of tension in thread drawn off the spool 3 and second means 9 operative to sense partial uncovering of the spool. The thread from spool 3 passes through a guide eye 11 which, under normal thread tension, remains upright. Upon weft breakage, the loss in tension allows eye 11 to fall downwards, Fig. 3, to a position in which, during beat up, it contacts a switch operating member 16 on a stationary member 12 to stop the loom. Alternatively member 16 may operate a pneumatic or hydraulic stop means. When the spool is nearly empty, electrically conductive spoon 9 completes a circuit from contact 5 through spool spindle 7 to contact 6 whereby when, during beat up, the shuttle 1 moves towards stationary member 12 to bring contacts 5, 6, against contacts 14, 15, a stop motion circuit is completed.
Patent GB-1300068-A (GB)
Title: Apparatus for purifying blood
Inventor: MEUNIER RENEE JANINE LOUISE
IPC: A61M1/36
Filed: 1969-12-03
Abstract: 1300068 Ion-exchange SERTNA SOC D'ETUDES ET DE RECHERCHES DE TECNIQUES NOUVELLES APPLIQUEES SA 3 Dec 1969 [3 Dec 1968] 59040/69 Heading B1J Blood is purified by ion exchange in an agitated bed 2a comprising thin walled micro beads containing the exchanger in their internal cavities. (For Figure see next column)
Patent GB-1242138-A (GB)
Title: Phosphoric, phosphonic or thiono-phosphoric (-phosphonic) acid esters or ester amides
Inventor: RUECKER DIETRICH
IPC: C07D285/10
Filed: 1968-12-12
Abstract: 1,242,138. Pesticides comprising phosphoruscontaining heterocyclic compounds. FARBENFABRIKEN BAYER A.G. 12 Dec., 1968 [20 Dec., 1967; 9 April, 1968], No. 59203/ 68. Heading A5E. [Also in Division C2] Insecticidal and acaricidal compositions compositions comprise phopsphoric, phosphonic, thionophosphoric or thionophosphonic acid [1,2,5-thiadiazolyl-(3)] esters or ester amides of the formula:- in which R 1  is alkyl (which may be substituted), aryl, alkoxy, monoalkylamine or dialkylamino; R 2  is alkoxy, monoalkylamino or dialkylamino; R 3  is H, alkyl, aryl or chloro substituted aryl and X is oxygen or sulphur. These compounds may be made as described in Division C2. They may be mixed with aromatic hydrocarbons, kaolins, clays, talc, chalk, or ground silicates.
Patent GB-1318674-A (GB)
Title: Phosphoric acid esters a process for their preparation and their use as insecticides acaricides and nematocides
IPC: A01N57/14
Filed: 1971-12-29
Abstract: 1318674 Pesticidal dithiophosphoric acid esters BAYER AG 29 Dec 1971 [29 Dec 1970] 60322/71 Heading C2P The invention comprises compounds of Formula II where R<SP>1</SP> and R<SP>2</SP> are C 1-4  alkyl and R<SP>3</SP> is alkylthioalkyl, alkylsulphinylalkyl, alkoxycarbonylalkyl or a group of formula in which X is halogen, methylthio, nitro or cyano, Y is hydrogen or halogen, R<SP>4</SP> is hydrogen or C 1-4  alkyl, R<SP>5</SP> is C 1-4  alkyl, cyclohexyl or benzyl, or R<SP>4</SP> and R<SP>5</SP> together with the nitrogen atom to which they are attached form a 6-membered heterocyclic ring which optionally contains a further hetero atom, n is 1 or 2, m is 1 or 2, k is 0 or 1 and q is 0 or 1. The compounds of Formula I may be prepared by reacting a compound of Formula VI where M is a metal or ammonium with a compound Hal-R<SP>3</SP> where Hal is halogen. The compounds of Formula I have insecticdial, acaricidal and nematocidal properties, and may be used as the active ingredient in conventional pesticidal compositions, optionally together with other active compounds.
Patent GB-1382420-A (GB)
Title: Treatment of plants
IPC: H01F21/12
Filed: 1971-12-29
Abstract: 1382420 Treating plant leaves with magnesia PRB SA 29 Dec 1971 [30 Dec 1970] 60345/71 Heading CIB  A method of treating a plant to supply magnesium thereto comprises applying to the leaves of the plant a composition which is a dry powder or an aqueous suspension of powder and contains magnesium oxide. Suitable foliar feeds disclosed also contain conditioning agents (e.g. clay, lignin-sulphonate salts and alkyl benzene sulphonates), dispersing agents and wetting agents. Examples describe the effect on haricot beans and spinach.
Patent GB-613198-A (GB)
Abstract: 613,198. Vibration detectors. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 14, 1946, No. 18034. Convention date, April 11, 1942. [Class 40 (iv)] [Also in Group XIX] A device for vibration testing comprises a feeler to be forced, against the action of a bias spring, against the object under examination wherein the feeler is centred by springs whose characteristic curve is such that the variation in length of the spring occurs about a point located on a portion less steep than the initial portion of the curve. As shown, the pick-up unit comprises a container 1 with a feeler 2, the point 3 of which is forced against the vibrating object 4. On the other end of the feeler 2 is a coil former 5 with a coil 6 in the air gap of a pole 7 of a magnetic circuit. The endwise movement of the feeler 2 is limited by a disc 11 between two stop discs 12, 13. To prevent lateral deflection of the coil 6 the feeler is composed of two linked sections 14, 15. The feeler is centered in the container 1 by means of three dish-like springs 17 having non-linear characteristic curves which also act as bias springs. The springs used are formed with three arms connected by a ring 18, as shown in Fig. 3. The characteristic curve of the springs is such that on the working portion of the graph small variations in spring pressure correspond to large variations of spring length so that a low natural frequency of vibration pick-up is attained.
Patent GB-1284370-A (GB)
Title: Process for preparing 3'-oxo-retinene
Inventor: MOREL JACQUES
IPC: C07C/
Filed: 1970-12-30
Abstract: 1284370 Preparing 3<SP>1</SP>-oxo-retinene RHONEPOULENC SA 30 Dec 1970 [31 Dec 1969] 61868/70 Heading C2V 3<SP>1</SP>-Oxo-retinene is prepared by contacting one molecular proportion of retinene with at least four molecular proportions of ammonium or alkali metal meta-periodate in an inert, liquid diluent and in the presence of an elemental halogen or an oxide of a metal of the groups Va, VIa, VIIa and VIII of the Periodic Table as a catalyst. In examples retinene is reacted with sodium meta-periodate in the presence of iodine. Other catalysts mentioned are bromine, chlorine, tungsten trioxide, vanadium pentoxide, molybdenum trioxide and osmium tetroxide.
Patent GB-726890-A (GB)
Abstract: 726,890. Gyroscopic apparatus. SPERRY CORPORATION. April 1, 1953 [April 14, 1952], No. 23579/54. Divided out of 726,849. Class 97 (3). In a gyroscopic instrument of the kind in which relative angular movement of a gyrocontrolled element and another member is confined within limits, means are provided responsive to the engagement of the gyrocontrolled element and the other member for providing an indication or warning that such engagement has occurred and that therefore the indication and/or control effect provided by the instrument may be inaccurate. The warning device is incorporated in apparatus described in the parent Specification. As shown, a pendulum 35 engages a pin 39 on gimbal 7 when the gimbal turns through a given angle, e.g. 90 degrees. A spring 41 surrounding the pin is forced into contact with the pin by the pendulum, closing a circuit energizing a lamp 45. In apparatus in which, when the gimbal turns through an angle greater than the given angle, current to the torque motors is increased to bring about rapid erection, a warning lamp is shunted across the winding of a relay which, when energized, causes the increased current to flow. Specification 625,288 also is referred to.
Patent GB-771817-A (GB)
Abstract: 771,817. Recording apparatus. ESSO RESEARCH & ENGINEERING CO. Sept. 29, 1955 [Oct. 12, 1954], No. 27801/55. Class 106 (4). A visible seismic record made up of a plurality of side-by-side seismic traces representative of seismic signals received simultaneously at a plurality of detection -points is provided by recording the signals simultaneously as separate traces on a magnetic recording medium and thereafter reproducing the traces separately, one at a time, on a second record medium while maintaining a fixed relation between the two media to obtain positive tie-in between the reproduced traces. As shown, the fixed relationship is achieved by providing the record media on two integrally connected drums, the drum 12 having a magnetic recording tape 13 and the drum 17 a strip of recording paper 18. The seismic signals after simple amplification are simultaneously magnetically recorded, together with a time base signal, by means of the multiple heads 15, 16 and then, by means of a rotary switch control, are amplified, filtered and reproduced, a trace at a time, by a pen-recorder 30. The pen carriage 22 is carried by a lead screw 23 which by means of a chain drive 25 moves the pen a prescribed distance over the paper 18 for each rotation of the drum. A spiral record is thereby obtained with each single trace commencing at the same peripheral point. The time base magnetic trace is reproduced with each seismic trace by a stylus 32.
Patent GB-2000544-A (GB)
Title: Lock and key device
IPC: B60R25/22
Filed: 1978-06-12
Abstract: A lock has opening into its key- receiving passage 51 an energy, e.g. light, source 55, 55a and a detector 60, 61, 81 which are spaced apart lengthwise of the passage and, if desired, also angularly offset about the passage axis, and the associated key 52 has in it an energy guide, e.g. a light guide 65, 65' and 82, the ends of which, when the key is fully inserted into the passage, register respectively with the source and the detector whereby the detector is energised to produce a control signal. <IMAGE>
Patent GB-2001990-A (GB)
Title: Preparation of 16 alpha -methyl- prednisolone and derivatives thereof via 17 alpha -hydroperoxy analogues
IPC: C07J5/00
Filed: 1978-07-17
Abstract: Compounds of formula (I):   <IMAGE> wherein each X is hydrogen or fluorine and Ac is acetyl, are prepared by starting from a compound of formula (II):   <IMAGE> which is subjected to a standard Grignard reagent under a nitrogen atmosphere to form a compound of formula (III):   <IMAGE> which compound is treated with an aqueous solution of ammonium chloride in the presence of ethyl ether to form a compound of formula (IV):   <IMAGE> which compound is reduced either with zinc dust in acetic acid or with an alkali metal iodide in an aliphatic ketone, to form the desired compound.
Patent GB-2005327-A (GB)
Title: Trench shoring
IPC: E02D17/08
Filed: 1978-08-25
Abstract: A trench shoring device comprises two steel plates 1 held spaced apart and interconnected by at least one prop 3. The plates have oppositely situated vertical struts 2 on which bear the ends of the prop and which are in their upper end regions provided with hooks, 4, for the attachment of a lifting device, which are situated below the upper edge of the plates 1, are open downwardly and are arranged to receive the eyes 7 of a lifting rope 6. On both sides of each hook are situated guards 10 for preventing the rope eye from slipping out of the hook. The distance of the guards 10 from the hook 4 is greater than the diameter of the lifting rope, and their lateral distance from each other is smaller than the width of the rope eye. The upper edges of the guards extend above the opening of the hook. <IMAGE>
Patent GB-2041384-A (GB)
Title: Improvements in and Relating to Board Products and Mouldings
IPC: C04B28/26
Filed: 1979-02-10
Abstract: A composition for the manufacture of building boards and mouldings, especially boards and mouldings for fire protection, comprising potassium silicate and/or sodium silicate, light weight aggregate and cellulosic fibres. Preferred light weight aggregates are vermiculite and/or pulverised fuel ash cenospheres. The cellulosic fibres may be first dispersed in a solution of potassium silicate and/or sodium silicate before adding the resultant liquid dispersion to the dry ingredients.
Patent GB-2022626-A (GB)
Title: Method and machine for raising the surface of knitted fabric
IPC: D04B35/36
Filed: 1979-04-10
Abstract: A method of treating knitted fabric comprises subjecting the fabric to the action of at least one surface raising element, for example a wire brush, in a procedure involving relative movement between the fabric and the raising element in the direction along the knitted courses of the fabric. Raising of the fabric may be effected on the knitting machine by a plurality of brushes 23 (only one of which is shown) supported from the frame 11 of the machine. Each of these brushes bears on the surface of the tube 12 in a region where the latter is supported by a drum 18. The bristles 24 of the brushes 23 act on the fabric, as the tube 12 rotates with the needle cylinder 10, by plucking and flicking at the stitches to pull out fibre ends and form a nap on the surface of the fabric giving it a softer handle. <IMAGE>
Patent GB-2018595-A (GB)
Title: Disinfectant holders
IPC: E03D9/02
Filed: 1979-04-12
Abstract: A holder for a water soluble product to disinfect and deodorise a lavatory pan comprises a cylindrical cage 1 and a hook 2 which is pivotally attached to the cage so as to be movable between a folded position lying on the walk of the cage and an erected condition in which the hook is substantially in the median transverse plane of the cage. The hook is pivotally attached to the cage by way of a stud on the hook slidably engaging in a guide groove 8 and 9 which is closed at an end near the central transverse plane of the cage. The cage may be a one-piece structure closed at one end and open at the other until a closure element is fitted thereto, or it may be formed from two cylindrical half cages 3 and 4 which can be joined together end to end to close the cage as shown in the Fig. <IMAGE>
Patent GB-2020794-A (GB)
Title: Control of gas fired heat generators
IPC: F24H9/20
Filed: 1979-04-18
Abstract: A control arrangement for a gas fired water-heater comprises a tube 8 which leads out of a port in the body 2 of the heater, and a heat-sensitive device 9 mounted on said tube which reacts to a rise in temperature in the products of combustion, to close a solenoid-operated valve 5, 6 and interrupt the supply of gas to the burner 3, or to actuate a warning system. <IMAGE>
Patent GB-2020940-A (GB)
Title: Apparatus for preparing mimeo stencils
IPC: G03F3/08
Filed: 1979-05-01
Abstract: An apparatus for stencilizing stencil paper by disruptive discharge, including a discharge current limiter circuit (10) for limiting to a predetermined level the current of the disruptive discharge which takes place from a discharge needle (12) through the stencil paper (2), and a photoelectric current control circuit (15) operative to compare with a reference voltage the peak value of a photoelectric signal (SO) from a photoelectric transducer (7) produced by light emitted by a light source (4, 4') and reflected by the portion of an original having the highest reflectivity. The result of comparison are then fed to a power source circuit (14) for the light source (4, 4') and the photoelectric transducer (7), whereby a stencil suitable for use in the duplication of an original by a mimeograph can be prepared by disruptive discharge in such a manner that porous image region of the stencil has a uniform permeability regardless of varying characteristics of different types of stencil paper. <IMAGE>
Patent GB-2022640-A (GB)
Title: Interlocking card-clothing wire
IPC: D01G15/88
Filed: 1979-05-11
Abstract: Interlocking metallic wire type card-clothing has a male section protruding from one flank of its rib and a female section formed in the other flank of the rib. The pitch width of the rib is not more than 1.65 millimetres (giving not less than 16 turns per 25 millimetres length of the roller) and the maximum depth of the female section is not substantially greater than half the pitch width of the rib. <IMAGE>