baber/WOPTO huggingface dataset:
Patent GB-1284455-A (GB)
Title: Impedance match for periodic microwave circuits and tubes using same
Inventor: HARMAN WARD A
IPC: H01J23/24
Filed: 1969-08-06
Abstract: 1284455 Travelling-wave tubes VARIAN ASSOCIATES 6 Aug 1969 [8 Aug 1968] 39453/69 Heading H1D Unwanted band-edge oscillations in a travelling-wave tube are prevented by the provision of a matching section comprising at least two periods of the periodic structure having the same cut-off frequency which lies substantially outside the passband of the main circuit. The matching section is an odd number of quarterwavelengths long at the band-edge of the main circuit, e.g. it may consist of two elements of the periodic structure each providing a phase-shift of 45 degrees. The periodic structure in the tube shown consists of a series of annular cavities 23 coupled by apertures 26 and provided with axial re-entrant portions 24 which define a drift space and a series of reaction gaps. The tube operates in a backward-wave mode and consists of three periodic arrays, the last (downstream) of which is shown in Fig. 2. The array is terminated at the input end by a waveguide 29 coupled to a dissipative load 13 in the form of a water-cooled seal 31, and at the output end by an output waveguide 9. The last pair of cavities at either end providing matching sections #II are substantially identical and are dimensioned to have cut-off frequencies substantially above the upper band-edge of the passband of the main circuit #I. Alternatively, they could have cutoff frequencies below the lower band-edge. They provide, in effect, a quarter-wave transformer between the main circuit and the input and output. The other two arrays comprised in the slow-wave circuit of the tube are similarly provided with matching sections (Fig. 1, not shown). The beam is focused by a solenoid (not shown) provided with soft-iron polepieces 27 (one only shown).
Patent GB-1045226-A (GB)
Title: Method of and apparatus for treating the rumen manure removed from slaughtered cattle
IPC: C05F1/00
Filed: 1965-09-15
Abstract: Rumen manure is flushed from an intake hopper in the floor of a slaughter house to coarse and fine hammer mills in series, treated with ammonia or a nitrate to assist anaerobic decomposition, and passed to a municipal clarifying plant.  Milling is effected to such an extent that the manure sinks in water.  The manure may be recycled through the mills.  According to the Figure (not shown), the manure is fed into a stainless steel hopper 1 having a valved outlet 4 and passed to a sewer 14.  The hopper is part of two alternative systems for flushing and milling, one of which comprises valved flushing pipe 2 and mills 7 and 10.  Recycling is effected by pump 21.
Patent GB-822579-A (GB)
Title: Improvements in or relating to a process of producing amides of pyridine carboxylic acids
Filed: 1956-12-31
Abstract: An amide of a pyridine carboxylic acid is obtained in a process wherein an ester formed by reaction of a pyridine carboxylic acid with an alcohol having a b.p. below 200 DEG  C. is contacted with gaseous ammonia.  Said ester may be admixed with not more than an equal weight of an alcohol containing up to 4 carbon atoms. Temperatures below 100 DEG  C. are generally suitable.  Examples employ methyl nicotinate, butyl isonicotinate, isopropyl nicotinate, and 2-ethyl hexyl nicotinate as starting esters.
Patent GB-1424056-A (GB)
Title: Inertia switch
IPC: H01H35/02
Filed: 1973-08-22
Abstract: 1424056 Inertia switches ALLIED CHEMICAL CORP 22 Aug 1973 [23 Aug 1972] 39840/73 Heading H1N An inertia switch comprises a chamber 50 formed by top 3, side walls 2 and a base 20 having an opening 21 therein, a loosely movable mass 4, or 14, larger in cross-section than the opening 21 so as to be removably positioned in the opening under rest conditions, said chamber walls having inclined integral surfaces 8 for limiting movement of the mass from its position in the opening whereby the mass with return under rest conditions, biased means 11 underlying the opening to engage the mass and be moved thereby against its bias, and switch means 12, 10, operated by movement of the biased means. The mass may comprise a ball 4 seated on a ring insert 5 or directly on the edge of opening 21 (Fig. 5, not shown). In Fig. 4 the mass 14 is cylindrical with a conical tip 15 and top 3 is arranged to be low enough to ensure that the mass 14 returns to the position shown on the resumption of rest conditions. The contact 12 may engage a contact (17, Fig. 6, not shown) when the mass so displaced.
Patent GB-840600-A (GB)
Title: Improvements in or relating to apparatus for wiping liquid from the surface of an article
Inventor: MAINS JOHN HAROLD
IPC: C14B1/00
Filed: 1957-12-27
Abstract: 840,600. Cleaning hides. SWIFT & CO. Dec. 27, 1957, No. 40216/57. Class 76. [Also in Group XXIII] Apparatus for swabbing the horizontal surface of articles such as hides, to remove surplus liquid therefrom comprises a conveyer for transporting the articles along a horizontal path and power actuated means for moving a swab or swabs repeatedly over, and at least partially across, the conveyer along a horizontal path inclined to the direction of movement of the conveyer, the direction of movement of each swab being such as to give it a component of movement in the direction of movement of the conveyer. In the apparatus shown in Fig. 1, an endless belt conveyer 10 carries hides 11 in the direction of arrow 23. A triangular frame having sides 27, 28, 29, formed of angle irons, carries an endless chain 32 round sprockets 33 at the corners of the triangle, one of the sprockets being driven by motor 41. Swabs 30, attached to the chain, traverse the conveyer while passing along sides 27 and 28, the resultant movement of the swabs with respect to the hides being normal to the direction of movement of the hides. Each swab comprises a wooden block 47 (Fig. 4), with metal wings 48 over which a padded fabric covering is laced. The block 47 is mounted on gimbals 52 and on a cylindrical body 53 in which slides a pin 63 attached to the chain 32. Guide bearings 72 co-operate with side plates of the triangular frame to maintain the alignment of the swabs and a cam follower 74 on the body 53 co-operates with cams on the sides 27 and 28 of the frame to raise the swab just prior to the point at which it passes above the conveyer and to lower it on to the articles to be cleaned just prior to the middle of the conveyer. In a modification (Fig. 6, not shown), the frame comprises two horizontal portions inclined to the direction of movement of the conveyer, a separate endless chain on each portion to which is attached a swab which is lowered on to the articles on the conveyer during its motion from the centre of the conveyer towards the edge, and is raised out of contact with the articles during return to the centre of the conveyer. The two swabs operate one on either side of the centre line of the conveyer.
Patent GB-904692-A (GB)
Title: Improvements in or relating to an information transmission system
IPC: H04L23/02
Filed: 1958-12-17
Abstract: 904,692. Signal transmission systems. NIPPON TELEGRAPH & TELEPHONE PUBLIC CORPORATION. Dec. 17, 1958 [Dec. 17, 1957; Feb. 25, 1958], No. 40819/38. Class 40 (4). [Also in Group XL (b)] Successive bits of a signal are divided into groups, the groups then being stored on respective rows in an orthogonal array of storage elements. Each row is then read out simultaneously to feed a plurality of devices, each of which adds and subtracts the signals in different combinations to provide a plurality of output signals which are then transmitted over separate channels. At the receiver the incoming signals are analysed to reproduce the original signals. The arrangement is said to minimize errors due to interference in the transmission channels.
Patent GB-1091945-A (GB)
Title: Improvements in or relating to servo actuating mechanisms
Inventor: HORDLEY ALBERT EDWARD
IPC: F02K1/15
Filed: 1963-10-17
Abstract: 1,091,945. Fluid-pressure servomotor systems. PLESSEY-UK Ltd. Oct. 9, 1964 [Oct.17, 1963], No.41056/63. Heading G3P. A servo-actuating mechanism comprises an input member 14 which acts through differential gearing to move a lever 15 connected through a bi-directional spring element 16 to a lever 7 controlling a valve 5. The lever 7 is movable between three positions, forward, neutral and reverse, and is provided with a spring indexing device 6 to hold the lever in its positions. The valve 5 controls a reversible Roots motor 3 which moves a controlled member 1 through gearing 4, 4a. The motor also drives a worm-gear 18 which provides a feedback through gear 17 to the differential gearing. In operation, an input signal acts on the spring element 16 and when this produces sufficient force to overcome the indexing device 6, the lever 7 is moved to open the valve 5. The motor 3 is then rotated until the worm 18 acts through lever 15 and spring element 6 to provide sufficient force to return the lever 7 to its neutral position. The input signal may be a speed signal and the member 1 actuates the nozzle plug of a ram jet engine.
Patent GB-1117333-A (GB)
Title: Apparatus for laying underwater cables
IPC: F16L1/20
Filed: 1965-09-28
Abstract: 1,117,333. Electric installations. KOKUSAI DENSHIN DENWA K.K. 28 Sept., 1965 [28 Sept., 1964], No. 41244/65. Heading H2C. A cable or conduit, or a group of either, is buried in a trench in the bottom deposits of a body of water by being fed through a multisection flexible pipe 1, fitted with several pairs of swept-back, concave-fronted plough blades 31a, 31b etc., as this is towed across the bottom. The cable or conduit may be laid through the pipe, or have been laid already and rest on the surface of the bottom deposits until the burying apparatus is pulled over it. The first pair of plough blades 31a and 31b have a wider span than those which follow them and successive pairs decrease in span so that the trench cut by them becomes narrower and deeper with the passage of each pair of blades. Some spoil spills over the upper edges of the rear blades, partially filling the trench and burying the cable or conduit in it. Bent ends 14 of the plough blades act as stabilizers and the plough blades are symmetrical about the horizontal so that the apparatus continues to work if accidentally inverted. In use the pipe and blades may be combined with an interguide for the cable or conduit, with weights and with an exit cone (Figs. 10A, 10B not shown) to press down the cable or conduit in its trench as it leaves the pipe. A hinge in the exit cone allows it to open when repeaters of larger diameter than the cable body pass through.
Patent GB-1044785-A (GB)
Title: Improvements relating to glassworks tank furnaces
IPC: C03B5/42
Filed: 1963-10-22
Abstract: 1,044,785. Glass melting tanks. G.B.D. (SOC. ANON. HOLDING). Oct. 22, 1963 [Nov. 5, 1962], No. 41664/63. Heading F4B. A glass melting tank furnace comprises a floor and side walls, each of the side walls meeting the floor at an angle of between 90 and 160 degrees and being formed of blocks having between them joints which lie in substantially vertical planes. The side walls are formed of prismatic blocks A, B, C, D. A vertical section through any of blocks B, C or D defines a parallelogram, whereas a vertical section through block A defines a trapezium.
Patent GB-1182780-A (GB)
Title: Electrical Overload Relay
Inventor: LOWE SIDNEY ROLAND
IPC: H01H71/10
Filed: 1966-09-19
Abstract: 1,182,780. Electrically tripped switches. MIDLAND ELECTRIC MFG. CO. Ltd. 13 Nov., 1967 [19 Sept., 1966], No. 41670/66. Heading H1N. An overload relay includes two slidable bars 18, 24, having abutments 19 and being linked so as to be displaced as a unit by the free ends of three bimetallic strips 17, one for each phase, whereby a switch 31 is actuated upon overload via a pivoted operating member 26 moved by the sliding movement of the bars 18, 24, but uneven loading of the phases causes one bimetallic strip 17 to move to a lesser extent, holding back bar 24 and causing relative longitudinal movement of the bars 18, 24, and transverse movement of bar 18 because of the linkage between the bars, such transverse movement turning a catch 53 to release a spring-loaded hammer member 50 which engages the switch operating member 26 to actuate switch 31. Upon overload, the end of bar 18 engages a floating abutment 27 pivotally mounted on member 26 and carrying a compensating bimetallic strip 28 with one end engageable against an adjustable stop 29, adjustable by a manually operable pivoted lever 30 for ambient temperature compensation and current setting. The abutments 19 are adjustable, and the catch 53 has an adjustable abutment 56 engageable by bar 18 on transverse movement thereof. The switch operating member 26 is coupled to a slidable actuating element 32 which has an adjustable abutment 44 engageable against a pivoted member 37 which actuates the three-pronged snap-acting element 33 of switch 31. Pivoted member 37 is mounted on an eccentric trunnion 45 on the end of a rotatable pin 46 for adjustment of the axis of pivotal movement of member 37 when initially setting the switch. A removable stop 40 makes switch 31 retractive or stable in two positions, a spring- loaded plunger 41 being used for re-setting the switch 31 by a cam 42 thereon displacing the member 35 in which the shorter limbs 34 of the snap-acting element 33 engage. Plunger 41 also actuates an auxiliary switch 43 which is normally closed. The body 11 of the overload relay also houses an auxiliary switch device 63 including a rotatable cam 66 for operating a normally open switch 64 in series with the switch 43 and the switch 31. In use, switch 64 is bridged by hold-on contacts of the contactor (not shown) with which the relay is used, the switch 64 being closed, e.g. for starting of a motor. The relay is used with two contactors for controlling forward and reverse running of an A.C. motor (not shown), and device 63 includes a further switch 82, Fig. 4 (not shown), operated by a lobe 70 on cam 66 which has a ramp 69 acting on the plunger 68 of switch 64.
Patent GB-865755-A (GB)
Title: Improvements in or relating to the curing of polymers
IPC: D06M11/65
Filed: 1959-12-08
Abstract: Polymers containing free -CONH2 groups may be cured by reacting with a mercuric salt of nitric or an organic carboxylic acid.  The polymers may be homopolymers of acrylamide or methacrylamide or copolymers of these monomers with other ethylenically unsaturated compounds, e.g. vinyl chloride, vinyl acetate, styrene, methylstyrene, acrylonitrile, acrylic acid, sodium acrylate and vinylidene cyanide.  The mercuric salt may be mercuric nitrate, formate, acetate, butyrate or benzoate.  The polymers may be in the form of films, fibres or filaments, or may be used to impregnate textiles, e.g. wool and cotton cloths, and paper and cured in situ.
Patent GB-1434159-A (GB)
Title: Rc chain arrangements for cable or line balancing networks
IPC: H03H7/42
Filed: 1974-09-26
Abstract: 1434159 Component assemblies FELTEN & GUILLEAUME CARLSWERK AG 26 Sept 1974 [1 Dec 1973] 41914/74 Heading H1R A resistance capacitance chain assembly for line balancing networks comprises a rectangular metal baseplate 1 grooved at 2 to support a printed circuit card 3 by a screw (not shown) whose etched conductors (not shown) define the chain and its individual components. A coaxial plug 4 connectable to a testing device (not shown) is mounted on the baseplate and is centred by a welded on spacer ring 5 holding the testing device at a prescribed distance from the RC chain during measurement. Lead 6 whose length and HF resistance are variable in response to the groove position connects the inner conductor of the plug to the printed circuit conductors, while an abutment of the baseplate periphery supports a screening can 8.
Patent GB-902133-A (GB)
Title: Improvements in water heaters
IPC: F24H1/28
Filed: 1960-12-06
Abstract: 902,133. Hot-water boilers. VANDEVELDE, R. N. Dec. 6, 1960 [Feb. 2, 1960], No. 41943/60. Class 64 (1). A water heater comprises three coaxial steel cylinders 1, 2 and 3 defining inner and outer annular spaces 5 and 4 and a central combustion chamber which is closed at its upper end by a removable heat insulated member 9 and open at its lower end and into which a burner 11 projects. The outer space 4 is closed at each end by rings 6 and forms a water chamber with entry and exit ports 7, 8 for cold and hot water respectively, the water being heated by the combustion gases from the central chamber which pass upwardly through space 5, opening 13 of cover 12 and discharge tube 14. Combustion is produced by a burner 11 for solid or liquid fuel projecting through the cylinders into the central chamber, the defining cylinder 3 of which is mounted on brackets 2<SP>1</SP> within cylinder 2 and has an additional inner cylinder 3<SP>1</SP> forming a telescopic structure. The heater is surrounded by a heat insulating layer 18 and is provided with a removable cover 15 and an inspection hole 16 closed by an anti-blast flap 17.
Patent GB-955056-A (GB)
Title: Improvements in exhaust systems for internal combustion engines
IPC: F02B27/06
Filed: 1962-11-06
Abstract: 955,056. Electromagnets. SOC. ANON. DES ANCIEN'S ETABLISSEMENTS PANHARD & LEVASSOR. Nov. 6, 1962 [Jan. 5, 1962], No. 41957/62. Heading H1P. [Also in Division F1] An electromagnet 20 operating a pivotal valve 9 has an armature 16 mounted on the valve spindle 15 and movable towards the polepieces 17, 18, an energization of the electromagnet, to rotate the spindle 15 against the force of spring 14. The centres of curvature of the end faces 16a, 16b, 17a, 17b of the armature and polepieces are eccentric of the pivot axis so that the width of the air gap between the armature and polepieces varies as the armature rotates.
Patent GB-1018685-A (GB)
Title: Electric motor control device
IPC: H02K11/00
Filed: 1962-10-24
Abstract: 1,018,685. Thermal switches; electromagnetic switches. GENERAL MOTORS CORPORATION. Oct. 24, 1963 [Oct. 30, 1962], No. 42052/63. Heading H2B. A motor control switch incorporates a heater 96, Fig. 1 (not shown), which is energized during starting to accelerate the operation of a bimetal overload switch 46, 42 if an overload occurs. Heavy starting current in a main winding 24 of a motor 28 energizes a solenoid 80 to attract an armature 74 releasing a spring- blade contact 66 into engagement with a contact 68 to energize an auxiliary winding 26. Simultaneously a contact 86 on the armature 74 disengages a contact 85 mounted upon blade 66 to insert the heater 96 in series with the solenoid 80. Should the motor be overloaded during starting the additional heating in the bimetal switch blade 46 due to excessive current causes the blade to snap out of contact with 42 to stop the motor. The blade 66 is mounted on an extension 62, 64 of the bimetal 46. If no overload occurs during starting the current in winding 24 eventually subsides sufficiently to release the armature 74 but should this not occur within a suitable time current flow in bimetal 62 eventually separates the blade 66 from contact 68 to de-energize the winding 26. If subsequent to starting an overload occurs, current in bimetal 62 separates contacts 85, 86 to re-energize heater 96 which assists the overload current in bimetal 46 to open the contacts 42, 46. The armature 74 carries a lead weight 72 and a felt pad 82 to reduce chattering. The overload bimetal 46 is adjustable by a screw 56.
Patent GB-972880-A (GB)
Title: New compositions of matter
Inventor: BRIGGS ARTHUR STANLEY
Filed: 1962-11-07
Abstract: A lubricating oil (e.g. mineral oil) is stabilized against oxidative deterioration by addition thereto of a bisphenol disulphide in which sulphur atoms are attached to the phenol radicals at ortho positions relative to the hydroxy groups and each phenol nucleus carries at least two alkyl substituents. Suitable compounds are 2,21-dithio-bis-(4-methyl-6-tertiary butylphenol),2,21-dithio-bis(4-methyl-6-tertiary octyl phenol) and 2,21-dithio-bis-(4,6-ditertiary butyl phenol). Another antioxidant may be present, particularly the corresponding monosulphide.
Patent GB-957113-A (GB)
Title: Improvements in or relating to electric motor control systems
Inventor: HOARE ERNEST
IPC: H02P7/292
Filed: 1961-11-30
Abstract: 957,113. Rectifying; control of D.C. motors. MARCONI CO. Ltd. Oct. 3, 1962 [Nov. 29, 1961], No. 42739/61. Headings H2F and H2J. [Also in Division G3] A reversible motor M is supplied from a three-phase source through transformer TR2 and controlled rectifiers S1-S12 associated with trigger pulse generating units 1P-6P having A.C. inputs derived from transformer TR1 whose secondary windings F, AF are in phase opposition. The slider of potentiometer PC may be displaced to apply a positive potential to the base of transistor N2, the base of transistor N1 receiving an A.C. input from phase FR/Y. When the base of transistor N1 becomes positive with respect to the base of transistor N2, transistor N2 becomes conductive to render transistor NP2 conductive, a differentiating circuit K2, R2, supplying a negative pulse to the base of transistor N4. Since the emitter of transistor N4 is positive at this time, a pulse is fed through leads T5, T1, to rectifiers S5, S1 which pass current to the motor until the potential across terminals R, Y falls below the back-E.M.F. When the voltage on phase AFB/R rises above the D.C. control potential, pulses from unit 6P trigger rectifiers S6, S1, and the cycle of operations continues in a similar manner. If the slider of potentiometer PC is set to supply a negative control voltage, transistors N1, NP1 conduct when the potential on phase FR/Y becomes negative with regard to the control voltage. Triggering pulses are then delivered to rectifiers S8, S10, for reverse operation of the motor. Thereafter, other pairs of rectifiers are switched-on for rotation in the reverse direction. A voltage representing the back-E.M.F. is delivered from tachometer generator G through potentiometer AP to the base of transistor U1, a voltage from potentiometer PC being applied to the base of transistor U2. If the reference voltage exceeds the feedback voltage, transistors U1, U3, U6 are conductive so that the emitter of transistor N3, and all other emitters on lead A, are at positive potential, the transistor N4 and corresponding transistors being inoperative at this time. Thus, if potentiometer PC is set to a lower speed position, rectifiers S8, S10, for example, are cut off and rectifiers S5, S1, switch on for regenerative braking action until the motor stabilizes at a new speed.
Patent GB-431991-A (GB)
Abstract: 431,991. Gun sights. MANCINI, N., 20, Piazza d'Azeglio, Florence, Italy. Nov. 9, 1934, No. 32283. Convention date, Nov. 30, 1933. [Class 92 (ii)] A telescope d for observing the lowered parabolic portion of the trajectory of tracer shells when firing at moving aerial targets is attached to the gun a with its axis laterally displaced from and inclined to the plane of the trajectory. Further, the image in the telescope d is conveyed by known optical means to the eyepiece c of the pointer's telescope b so that two images of the target and trajectory are visible to the pointer as shown in Fig. 5. The pointer is thus able, by adjusting the gun, to cause the parabolic portion x of the trajectory to intersect the target y. The angle of inclination e of the telescope d may be automatically varied as the gun is elevated for range.