baber/WOPTO huggingface dataset:
Patent GB-1168117-A (GB)
Title: Improvements in and relating to the Packaging of Fluent Materials
IPC: B65B39/02
Filed: 1967-06-05
Abstract: 1,168,117. Packaging machine. TETRA PAK A.B. 5 June, 1967 [30 June, 1966], No. 25864/67. Heading B8C. A form and fill machine of the kind that forms a tube 3 by longitudinally sealing a web 1 has a bell-shaped member 12 fitted on to the filling pipe 8 and forming a seal with the inside of the tube so that a volume of gas (31), Fig. 3 (not shown), enclosed above the surface of the filling material is used to control the level of the material. The device is particularly applicable to handling viscous material. As shown, when the material rises above a certain level, excess pressure in the enclosed volume acts on the material and causes a consequential pressure increase in pipe 9, whereupon a relay unit 10 controls a throttle valve 11 to reduce the flow. The pipe 9 may be eliminated and a throttling element controlled by the pressure in pipe 8. The bell-shaped member 12 helps prevent stress on a seam 2 formed by a welder 4. An outer sleeve, or specially shaped transverse sealing jaws may further support the tube (not detailed). The member 12 may be perforated at the point where it leaves the surface of the tube so that air entering down the filling pipe with the material does not build up excessively inside the enclosure formed by the member.
Patent GB-172712-A (GB)
Title: Improvements in and relating to boilers, particularly intended for vapourising mercury or other liquid having a high boiling point
IPC: B01D3/02
Filed: 1920-09-08
Abstract: 172,712. British Thomson - Houston Co., Ltd., (General Electric Co.). Sept. 8, 1920. Vapour engines. - In a boiler particularly intended for vaporizing mercury or other liquid having a high boiling point, of the kind described in Specification 152,785, the sections 15 consist of plates so corrugated and placed together as to form a number of tortuous passages of uniform width for the liquid and vapour. The sections are arranged with the tops of their corrugations in contact, thus forming a number of separate flues between the sections. The hot gases enter through a bottom opening 31, and pass upward through the centre flues 35, laterally through the upper flues 36, and then downwards through the side flues 37. The fluid enters at the bottom of each section on both sides, and is directed beneath partitions 19 towards the centre, and then, after passing upwards, is directed downwards around partitions 20. The fluid is preheated in side passages 21.
Patent GB-279811-A (GB)
IPC: C01C3/16
Filed: 1927-09-30
Abstract: 279,811. Caro, N., and Frank, A. R. Oct. 27, 1926, [Convention date]. Calcium and magnesium cyanamides.-Calcium cyanamide is formed by reacting upon calcium carbonate or mixtures such as dolomite with ammonia at ordinary pressure and at a temperature which is not more than 200‹ C. below the temperature of dissociation of the carbonate and may be slightly above it. The temperature may be 700-900‹ C. in the case of calcium carbonate, and 550-700‹ C. in the case of dolomite. The reaction is carried out in vessels of ceramic materials or quartz, the presence of metals such as iron, nickel &c. being avoided. The carbonates may be mixed with substances such as calcium fluoride or oxide, sodium carbonate &c. Specifications 180,314 and 279,419 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) describes also that magnesium cyamamide may be obtained by treatment of magnesium carbonate at temperatures of 500- 600‹ C. This subject-matter does not appear in the Specification as accepted.
Patent GB-262554-A (GB)
Title: Improvements relating to coal washing and like machines
IPC: B03B11/00
Filed: 1925-10-16
Abstract: 262,554. Flow Coal Washery Co., Ltd., Russell, A., and Austin, S. Oct. 16, 1925. Upward-current classifiers; inclined-trough washing appartus.-In apparatus for washing coal and other minerals of the kind in which the material is passed with a stream of water along a trough or launder from which the heavier constituents pass by way of discharge chambers, each such discharge chamber is provided with a number of different sized nozzles carried on arms forming an element movable on its support to bring the required nozzles into operative position. In the form shown, nozzles f, g, h are carried by arms j mounted on a spindle k supported by links m from a pin n, a counterweight p being provided. Any one of the nozzles f, g, h, or a plug i may be brought into engagement with the outlet end e of a trunk a attached to the discharge chamber c. In a modification, the spindle k is arranged vertically and is carried in one end of a counterbalanced bell-crank lever, and a plug is provided which can be sprung into position to close the nozzle which is in inoperative position.
Patent GB-246102-A (GB)
Title: Improvements in exchangeable filters more particularly for artificial silk spinning machines
IPC: B01D35/12
Filed: 1925-10-16
Abstract: 246,102. Bemberg Akt.-Ges., J. P. Jan. 15, 1925, [Convention date]. Filters having sheet filteringmaterials. - Apparatus for altering liquids particularly such as are to be used for the spinning of artificial silk, consists of a plurality of filters e, e<1> mounted on a rotatable base n, which is itself supported on a stationary carrier d, the base and carrier being provided with passages such that according to the relative positions of these two parts the individual filters may be put into communication with the inlet and outlet passages b, b<1> as in normal working, or they may be cut off entirely, or a filter which has become clogged may be cleaned by the passage of liquid in the reverse direction. The filtering elements may be in the form of cartridges f, f<1>, held in place by nuts w, the whole being enclosed by sealed covers e, secured by nuts w.
Patent GB-261723-A (GB)
Title: Improvements relating to high-tension electric switches
IPC: H01H31/28
Filed: 1926-10-18
Abstract: 261,723. Aktieselskabet Drammens Armaturfabrik. Nov. 23, 1925, [Convention date]. High-potential switches; switches, actuating.- In a high-tension switch in which the movable contact-blade in opening or closing performs a rectilinear movement followed by an angular motion in the same plane, means are provided for preventing the rectilinear movement of the blade during the said angular motion. As shown in Figs. 1 and 2, the movable contact member 7 is first moved rectilinearly to withdraw its contact 6 from the fixed contact jaws 5 and is then moved angularly to complete the separation of the contacts. The mechanism for producing this motion is mounted within the casing 8 and consists, as shown in Fig. 3, of a crank 23 rotated by a vertical shaft 21 and pivotally connected by a link 13 to a crank 11 on the pivot 25 carrying the contact member 7. The pivot 25 is carried by a sliding block 10 mounted in horizontal guides in the member 9 so that the first portion of the rotation of the operating crank merely produces a sliding movement of the contact member. When, however, the pin 11<a> on the crank 11 engages a pin 20 on a pivoted catch 16, further sliding movement is prevented and an angular rotation of the shaft 25 takes place. In the closing of the switch horizontal movement of the block 10 is prevented until the pin 11<a> engages the pin 20 so raising the hooked end 18 of the catch 16 from engagement with the projection 15 on the block 10, subsequent movement of the operating crank forcing the contact 6 between the fixed contact jaws 5. The switch contacts and mechanism are supported on insulators 2, 3, 4 mounted in a frame 7. In an alternative form, Fig. 5, the member 11 is formed with a lateral projection partly of a straight portion 26 and partly of a curved portion 28, and this projection bears during the operating movement of the switch against a fixed roller 27.
Patent GB-1103086-A (GB)
Title: Thermoelectric assembly
IPC: G21D7/04
Filed: 1965-11-04
Abstract: 1,103,086. Thermoelectric devices. NUCLEAR MATERIALS & EQUIPMENT CORPORATION. 4 Nov. 1965 [3 Dec., 1964], No. 25962/67. Divided out of 1,103,084. Heading H1K. A thermoelectric element comprises two blocks of different materials of the same thermoelectric type, one of the blocks having an aperture or cavity to match the electrical properties of the two blocks at the interface. As shown, two N-type lead telluride blocks THN1, THN2 are arranged in thermal cascade. The electrical impedances are matched by providing block THN2 with an internal bore 15. The blocks may also be of tin telluride. It is stated to be known to match the impedances of two blocks by shaping the outside surface of one of them at the interface.
Patent GB-518883-A (GB)
Title: Improvements in or relating to telephone systems
IPC: H04Q3/62
Filed: 1938-09-06
Abstract: 518,883. Automatic exchange systems. STANDARD TELEPHONES & CABLES, Ltd., and HARTLEY, G. C. Sept. 6, 1938, No. 26051. Drawings to Specification. [Class 40 (iv)] In an automatic exchange system having " call-back" facilities for enabling one subscriber to transfer a call to another, the call-back is automatically transferred to an operator without further action by the subscriber if the equipment for obtaining access to the third party is busy. The invention is described with reference to the P.B.X. system described in Specification 500,959, in which a call-back, circuit (Fig. 5) is associated with an exchange line by means of a relay (RC) in the line circuit operated in response to a keyoperation at a substation. According to the invention, the call-back circuit, when busy, opens contacts in the circuits of the relays (RC) of the various line-circuits and closes a circuit for the relay (R) which flashes the operator's calling lamp individual to the line-circuit involved.
Patent GB-428754-A (GB)
Title: Improvements in rotary apparatus for the separation of powdered or granular material
IPC: B07B4/02
Filed: 1934-09-12
Abstract: 428,754. Pneumatic separating. COPPEE & CIE, E., 103, Boulevard de Waterloo, Brussels. Sept. 12, 1934, No. 26243. Convention date, Nov. 25, 1933. [Class 117] In separators of the kind comprising a rotary disc 2 for distributing the material in a horizontal sheet through which air is drawn by a fan 8, the feed hopper 6 supplying the material to the disc has outlet orifices 6<a> uniformly distributed about its lower part and in addition overflow orifices 6b in its side walls at a higher level. The orifices 6b are disposed so as to conform to the natural slope of the material in the hopper and the orifices 6<a> may be provided with regulating slides 11 adjusted by rods 12 carrying a mark 12<a> movable over a scale.
Patent GB-473508-A (GB)
Title: Improvements relating to variable electric resistances or potentiometers
IPC: C01B13/10
Filed: 1936-09-28
Abstract: 473,508. Variable resistances. STEATIT - MAGNESIA AKT.-GES. Sept. 28, 1936, No. 26312. Convention date, Sept. 28, 1935. [Class 37] A variable resistance is mounted in a casing which is provided with packing at all points accessible to the ingress of air or liquid. The control spindle b passes through a bush c having a recess occupied by a leather ring f which has been boiled in tallow, and a brass ring g retained by flanges on the bush. Packing between the bush c and the bottom of the casing is effected by means of a soldered seam h, and the cover l is fitted with a soft metal ring m. The cover l is of ceramic material having a layer of glaze u, and carries the connecting lugs n. Specification 457,692 is referred to.
Patent GB-852879-A (GB)
Title: Improvements in or relating to vermin traps
IPC: A01M23/14
Filed: 1958-08-16
Abstract: 852,879. Vermin traps. DIXON, E. Aug. 12, 1959 [Aug. 16, 1958], No. 26389/58. Class 5(1). A vermin trap comprises a cage 1 and a removable platform 2 fitted to the top of the cage, a hinged flap 4 in the platform registering with an opening in the top of the cage. The flap is pivoted at 5 and is provided with an adjustable counterweight 6 for returning it to the horizontal after actuation of the trap. The flap 4 is normally held in a horizontal position by means of a spring-pressed abutment 9 on its underface, engaging with a slidable catch 8. Interference with a bait-holding member 13 causes the arm 14 to touch one or other of the contacts 16, 17, thereby closing an electric circuit and energizing a solenoid or electromagnet 11, which attracts the sliding catch 8 and allows the flap 4 to pivot and deposit the vermin in the cage 1. The flap is then returned to the horizontal by the counterweight 6, and the abutment 9 re-engages with the catch 8 which has meanwhile been restored to its normal position by the spring 12. Instead of being provided with a spring-pressed abutment, the flap 4 may comprise an insulated contact at its free end, so that as the flap 4 returns to its horizontal position and the contact touches the catch 8, another circuit is closed and the solenoid or electro-magnet 11 is again energized and withdraws the catch to allow the flap to return to its normal position.
Patent GB-1260337-A (GB)
Title: Capacitor storage circuits using field-effect transistors
IPC: H03G1/02
Filed: 1969-05-23
Abstract: 1,260,337. Analogue voltage storage circuits. RCA CORPORATION. 23 May, 1969 [31 May, 1968], No. 26397/69. Heading H3T. The subject matter of the Specification is disclosed in Specification 1,260,336 but the claims relate to the use of a low leakage electron discharge tube to vary the charge in a storage capacitor connected to the gate of a field effect transistor.
Patent GB-1088792-A (GB)
Title: An improved ignition circuit for an internal combustion engine
IPC: F02P15/12
Filed: 1964-10-22
Abstract: 1,088,792. Ignition systems. H.W. LAWSON. Oct.22, 1964 [Oct.29, 1963], No.26420/67. Divided out of 1, 088, 791. Heading F1B. In a capacitor-discharge ignition system in which a silicon controlled rectifier 34, Fig. 6, is triggered to discharge a capacitor (not shown) through the primary winding of the ignition coil to produce a spark, it is arranged that the SCR 34 is triggered repeatedly at cranking speeds to produce multiple sparking and reduce charge leakage from the capacitor. This facilitates starting. In the arrangement shown in Fig. 6, the contact breaker is replaced by a slotted obturator disc 100 mounted on the distributer rotor and interposed between a lamp 102 and a photo-electric cell 104. When the cell is dark, a capacitor 109 is charged through a resistor 107. When the cell is illuminated, the capacitor 109 discharges through the cell and a unijunction transistor 106 to produce relaxation oscillations whereby the SCR is triggered repetitively when the engine is running at cranking speed to provide a series of sparks. The lamp voltage is regulated by forwardbiased silicon diodes 110, 111. At engine speeds above the idle speed, the width of the slots 101 and the value of the time constant of the capacitor 109 and resistor 107 prevent the capacitor 109 from discharging more than once per slot, whereby multiple sparking is avoided at these speeds. The lamp may be replaced by a piece of cobalt 60 or other gamma ray source, the photo-cell being replaced by a radiation detector. In another embodiment, Fig. 8, the contact breaker is replaced instead by a magnetic polepiece 128 rotating with the distributer rotor. When the tips 130 come into alignment with the pole faces of a transformer core 124, the reluctance of the core is reduced sufficiently to set an oscillator, comprising transistor 121 and feedback windings 129, 131 into oscillation to produce repetitive triggering of the SCR 34 to provide a series of sparks. In a further embodiment, Fig.4 (not shown), in which a conventional contact breaker is retained, the triggering circuit is as shown in Fig. of Specification 1, 088, 791, providing single sparks during normal operation, with a time-delay arrangement to prevent multiple sparking due to contact bounce. However, when the starter solenoid is energized, a relaxation oscillator using a unijunction transistor is also energized to provide multiple sparking to facilitate starting.
Patent GB-1521322-A (GB)
Title: Agricultural tractors and other vehicles
IPC: B62D49/06
Filed: 1975-06-20
Abstract: 1521322 Hydraulic reciprocating motors C VAN DER LELY NV 20 June 1975 [25 June 1974] 26434/75 Heading F1A [Also in Division B7]  In an agricultural tractor or other vehicle (see Division B7) having on each side three driven ground wheels, each ground wheel is independently driven by a respective hydraulic motor comprising a housing in which is journalled an output shaft 93 carrying a gear-wheel 114A in mesh with respective pinions carried by three shafts 115, 116, 117. On each shaft 115, 116, 117 is mounted an eccentric 123, 124, 125 surrounded by a driving ring 129, 130, 131 secured to the piston rod 132, 133, 134 of a double-acting hydraulic piston and cylinder assembly including a cylinder 135, 136, 137 mounted on a pivot 138, 139, 140. Flexible fluid supply and return ducts 151, 152, 153, 154, 155, 156 communicate with the chambers in the cylinders 135, 136, 137 through control valves 141, 142, 143 having slidable spools linked to fixed points on the housing.
Patent GB-788901-A (GB)
Title: Improvements in or relating to the preparation of methine dyestuffs
Inventor: NYS JEAN MARIE
IPC: C09B23/01
Filed: 1954-09-13
Abstract: Cyanino dyes of the general formula: <FORM:0788901/IV (b)/1> wherein R is an alkyl group, L is hydrogen, alkyl, aryl, -S-alkyl or the group: <FORM:0788901/IV (b)/2> (D1 completes a heterocyclic ring, R1 is an alky group and n1 = 0 or 1), D and Z complete heterocyclic nuclei and n is 0 or 1, are prepared by treating the corresponding merocyanine dyes having a ketomethylene ring with P2S5, in a basic or neutral medium, preferably by heating the reagents in the presence of magnesium oxide.  Examples are given wherein R is methyl or ethyl, L is hydrogen, methyl, phenyl, methylmercapto, 2(3 - methyl - benzthiazolyl)-methylidene or 2(3-methyl-benzoxazolyl)-methylidene, D completes a thiazoline, benzthiazole, benzoxazole, benzselenazole, 2-quinoline or 3.3-dimethyl-indolenine ring and Z completes a 4 - thio - thiazolidine - dione, 2 - ethylimino - 4 - thio - thiazolidone, 4 - thiorhodanine, 5 - thiopyrazolone, 2 : 4 - dithiohydantoin, 2 : 4 - dithio - oxazolidine - dione, 4 - thio - oxazolidine - dione, 11,2 - isoxazothione - 5 or oxazolthione-5 nucleus.  According to the Provisional Specification the dyes may have the formula: <FORM:0788901/IV (b)/3> where R may be alkyl, aralkyl, aryl or alkylene, substituted or not, m is 0 or a positive integer and the other symbols are as defined above except that L may also be YR11 (R11 = alkyl, aryl or aralkyl and Y = O, S or Se), a heterocyclic nucleus such as isoxazolyl or the group: <FORM:0788901/IV (b)/4> where m1 is 0 or a positive integer, R1 is alkyl aralkyl, aryl or alkylene and D1 and n1 are as defined above. Specification 740,770 is referred to.
Patent GB-868704-A (GB)
Title: Improvements relating to temperature stabilisation of transistor amplifiers
IPC: H03F1/30
Filed: 1957-08-22
Abstract: 868,704. Stabilizing transistor amplifiers. TELEFUNKEN G.m.b.H. Aug. 22, 1957 [Aug. 23, 1956], No. 26540/57. Class 40(6) In a three-stage transistor amplifier D.C. negative feedback is applied around the first two stages to partially stabilize the transistor currents and the residual changes of output current of the second stage with changes in temperature are used to stabilize the third stage..In the Figure the stages are transformer coupled, additional windings being provided to supply negative signal frequency feedback to the respective emitters. Negative D.C. feedback is provided between the emitter of the second stage and the base of the first to partially stabilize the currents with changes in temperature and supply voltage. The residual changes in collector current of the second stage are sufficient to supply a varying bias voltage through a potentiometer 11 to stabilize the third stage. In an alternative embodiment (Fig. 1 not shown) resistance coupling between the first two stages is provided.
Patent GB-297335-A (GB)
Title: A machine for forming airtight packets of cheese or like material
IPC: B65B3/02
Filed: 1928-09-17
Abstract: 297,335. Schweizerische Industrie- Ges., and Hubler, F. E. Baechler-, (trading as Hubler, F. Baechler-). Sept. 17, 1927, [Convention date]. Filling cheese and the like into cases; bags, folding down mouths of after filling.-In a machine for forming airtight packets of cheese &c. wrappers are cut from a strip of tin foil and formed into open containers into which the cheese is filled in a viscous state, and the containers are closed to form a package which may be of sector shape as shown in Fig. 30. A label may be applied to the container. After a case of the form shown in Fig. 30 has been made on a former and labelled thereon, it is removed from the former and deposited in. bucket which carries it to the filling position. The stripping device comprises two plates 122, 123, Fig. 22, each having a suction nozzle. The plates are pivotally mounted on a carriage 125 and are moved by a chain 132 against the action of a spring 131 so as to overlie the flat sides of the case on the former. Suction is applied to the nozzles and the chain allows the spring to draw the carriage to the right, Fig. 22, a cam 129 acting on a roller 130 on the carriage to turn it into the substantially vertical position shown in broken lines. The vacuum is broken and the case falls into one of a series of buckets 140 of appropriate shape. The buckets are carried by an endless chain to a filling device of known type which deposits molten cheese in the case. During the filling, the flat sides of the case are engaged by suction nozzles and held open. The case or bag is filled approximately to the level m, n, Fig. 27, and is closed by forming the flaps shown in Fig. 28, and then turning down the remaining flaps about the edges m, o and n, p, to complete the package shown in Fig. 30. The side walls are first slightly pressed outwards by plates (illustrated in Fig. 32 of the Drawings) and folders 174, 175, Fig. 34 to which shaped blocks 197 are attached, make the small end folds shown in Fig. 28. Brushes 190 smooth the side. walls during the folding, and at the next stage. brushes 200, 201, Fig. 35, fold down the flaps about the lines n, p and m, o to complete the package.
Patent GB-1127392-A (GB)
Title: Device for use in textile doffing or stringing-up operations
IPC: B65H54/71
Filed: 1966-06-15
Abstract: 1,127,392. Yarn cutter. FIBER INDUSTRIES Inc. 15 June, 1966 [21 June. 1965], No. 26685/66. Headings DID and D1F. A suction gun used during stringing up or doffing comprises a knife 14 movable into and out of a position in which it obstructs the passageway 13 for filaments or yarn sucked through the gun, see Fig. 3. One leading edge of knife 14 as it moves into position is the cutting edge. As shown the yarn is sucked through inlet pipe 12 through the gun to flexible hose 10. One blade is moved to cut the yarn by spring 17. This spring is tensioned cocking mechanism 18 which retains lever 16, which is pivotally attached to knife 14, in the "bore open" position shown in Fig. 3. One lever 16 is released when trigger 20 is moved to compress its return spring 20, see Fig. 4.
Patent GB-865239-A (GB)
Title: The preparation of platinum/carbon rods for electron microscope technique
Inventor: BRADLEY DAVID EDWARD
IPC: C22C32/00
Filed: 1958-08-20
Abstract: A powder mixture containing in parts by weight 3-5 parts Pt powder to 1 part carbon powder is mixed with organic compounds such as gum arabic and a solution of pitch in chloroform and pressed into rods using oil e.g. linseed oil in benzene as a die lubricant, and finally heated to at least 500 DEG C.  Prior to the final heating in vacuum the rods are air dried and baked in a non reactive gas such as N2. The rods are used as electrodes for the vacuum deposition of platinum and carbon on the surface of a specimen under an electron microscope. A typical analysis of an electrode is 83.3% platinum, 16.7% carbon.