baber/WOPTO huggingface dataset:
Patent GB-393732-A (GB)
Title: Process for concentrating rubber latex
Inventor: PETERSEN ALFRED E
IPC: B01D1/16
Filed: 1932-05-10
Abstract: <PICT:0393732/III/1> In the process described in the parent Specification, in which rubber &c. latex is concentrated by heating it without the formation of steam, and spraying it into an evaporation chamber in which the pressure is less than the vapour pressure of the heated latex, the latex is circulated by means of a pump.  Latex from a container 4 is forced by means of a pump 3 through a heater 2 to a nozzle 13 which sprays it into a chamber 1 evacuated by an air-pump 7.  A valve 8 is now closed and valve 9 opened, and the charge of latex is circulated through the pump-heater-evaporator system until sufficiently concentrated, the evaporated water being drawn off to a condenser 5.  A valve 14 is now opened and the latex drawn off through the cock 10.
Patent GB-238003-A (GB)
Title: Improvements in and relating to thermionic valve circuits
IPC: H04B1/16
Filed: 1924-05-08
Abstract: 238,003. Melinsky, M. M. May 8, 1924. Thermionic amplifiers, detectors, and generators. - The anodes of one or more valves are earthed either directly or through a condenser and there is included in the grid connection of one or more of the valves one or more low resistance oscillatory circuits f. Fig. 1 shows a valve e<1> arranged for detecting and Fig. 3 the addition of a low frequency valve V2 the secondary of the transformer o, being connected to the grid and through a condenser o2 to the anode e<2> and hence to earth h or alternatively to the negative side of the filament or a grid-biasing battery. An arrangement with a high frequency amplifying valve having a tuned anode circuit and connected to a detecting valve arranged as in Fig. 1 is also described in the Specification. A frame aerial may be used and connected between earth h and the aerial side of the condenser d. A transmitting circuit may be formed from the circuit in Fig. 1 by connecting the aerial side of condenser d to earth h and substituting the circuit c for the telephones j the aerial being connected to the high tension end of this circuit.
Patent GB-1469903-A (GB)
Title: Ink jet printers
IPC: H04N1/034
Filed: 1975-03-20
Abstract: 1469903 Ink droplet printing INTERNATIONAL BUSINESS MACHINES CORP 20 March 1975 [30 April 1974] 11590/75 Heading B6P An ink droplet printer nozzle assembly comprises a nozzle unit 12, a piezoelectric transducer 14 and a reaction mass 16, the nozzle unit, transducer and reaction mass being fixed together and mounted as an assembly on resilient vibration damping material 56 by securing the reaction mass to the material 56. The damping material is held in a frame 30 which is itself supported on leaf springs 42, 44. The transducer is energized at a resonant frequency of the assembly.
Patent GB-553360-A (GB)
Title: Hold down and chip collecting attachment for drills
IPC: B23Q11/00
Filed: 1942-08-18
Abstract: 553,360. Dust, confining in industrial processes. CHICAGO PNEUMATIC TOOL CO. Aug. 18, 1942, No. 11591. Convention date Dec. 9, 1941. [Class 8 (ii)] [Also in Group XXII] A drilling tool particularly for drilling aircraft structures is provided with a dustremoving attachment mounted on the tool body and comprising an axially movable guide surrounding the drill and connected with a dust extractor. A housing 20 supports a flanged cylinder 44, Fig. 4; which carries a sleeve member 42 slidable over the cylinder 44. The sleeve is urged forward by a spring 48, the movement being limited by the end of a stop member 53 pivoted to a hand-lever 55 which is itself pivoted at 56a to the cylinder 44. The sleeve 42 is connected by a line 61, 36 to a dust bag 37, suction being exerted at the working point by means of an air stream 39 directed into the bag. Specification 545,864 is referred to.
Patent GB-793433-A (GB)
Title: Improvements in devices for laterally displacing crop lying on the ground
IPC: A01D78/00
Filed: 1954-06-18
Abstract: 793,433. Hay-making. VAN DER LELY, N.V., C. June 18, 1954 [July 6, 1953], No. 11627/56. Divided out of 793,431. Class 6(3). A device for laterally displacing crop lying on the ground provided with at least one rake wheel 9 is characterized in that the axle 13 of the rake wheel is rotatable about a vertical axis 8 and can resiliently yield from its position by turning about the axis. As shown the axle 13 is pivoted on a vertical pin and is resiliently connected by means of a spring 19 to an arm 18 also pivoted on the pin and adjustably positioned by means of a pin which engages the arm and a segment 17. The spring 19 normally retains the wheel in the position shown in the drawing but allows it to move laterally. Specification 793,434 is referred to.
Patent GB-888407-A (GB)
Title: Improvements in or relating to a substituted 20ª--yohimbane
IPC: C07D401/06
Filed: 1958-04-11
Abstract: The invention comprises laevorotatory 10-methoxy deserpidine (rotation measured in chloroform), salts the cationic component of which is 18b -(31,41,51-trimethoxy-benzoyloxy)-10,17a  - dimethoxy - 16b  - methoxycarbonyl-D 3 - 20a -yohimbene, and a process for the preparation of 10-methoxydeserpidine by reduction of one of the above mentioned salts, e.g. with a metal/acid reducing agent.  The salt may be prepared by cyclisation of 18b -(31,41,51-trimethoxy-benzoyl oxy) - 10,17a  - dimethoxy - 16b  - methoxycarbonyl - 3 - oxo - 2,3 - seco - 20a  - yohimbane, itself prepared by esterification of the corresponding 18b -hydroxy compound, which is formed from 5-methoxytryptamine by condensation with a 1b  - carboxymethyl - 2b - methoxycarbonyl - 3a  - methoxy - 4b  - acetoxy - 6b  - formylcyclohexane ester, followed by reductive cyclisation and partial hydrolysis of the resulting 18b  - acetoxy - 10,17a  - dimethoxy - 16b  - methoxycarbonyl - 2,3 - 3,4 - diseco - D 4(21) - 20a  - yohimbene 3-carboxylic acid ester.  The last two steps may also be effected together by treatment at an elevated temperature with a metal hydride reducing agent, or by cyclisation, complete hydrolysis and then re-esterification with diazomethane.  Detailed examples illustrate the invention. Specifications 868,475, 888,411, 888,412, 888,413, 888,414 and 888,431 are referred to.
Patent GB-1497817-A (GB)
Title: Discharge lamp lighting device
IPC: H05B41/04
Filed: 1975-03-20
Abstract: 1497817 Control systems for discharge lamps MATSUSHITA ELECTRIC WORKS Ltd 20 March 1975 [30 March 1974] 11669/75 Heading H2H A system for igniting and running a discharge lamp comprises a circuit element capable of receiving an electric charge and switching means whereby during a half-cycle of the A.C. source to which the system is connected the element is charged and during the next halfcycle the voltage across the element is added to the source voltage thereby to provide a voltage sufficient to strike the lamp. The circuit element may be an inductor, a capacitor or both. A discharge lamp 12 is connected to an A.C. source 11 by way of a capacitor C1 and an inductor L1. Closure of a switch 13 during all or a part of the latter portion of a half-cycle of the A.C. source 11 causes the capacitor C1 to be charged. During the next half-cycle of the A.C. supply the switch 13 is opened so that the voltage acquired by the capacitor C1 is added to the voltage of the A.C. source 11 thus providing a voltage of sufficient magnitude to strike the lamp 12. Fig. 4 shows a practical circuit wherein the switch 13 comprises a pair of back-to-back connected thyristors S1, S2 the gate signals for which are provided by a control circuit 14 which comprises a transformer PT energized from a bridge rectifier D by way of a unijunction transistor UJT, the output voltage of the bridge being stabilized by a Zener diode ZD. Various embodiments are disclosed wherein the switch is formed by a triac the gate signal for which is derived by means including a diac, or the switch may comprise a bridge rectifier across the output terminals of which is a switchable transistor. The arrangement of the capacitor and inductor may take various forms, e.g. the inductor may be in the lamp side of the switch or in series with the switch. Alternatively the chargeable element may be an inductor and a plurality of lamps may be used.
Patent GB-1491821-A (GB)
Title: Circulating shift register memory having editing and subroutining capability
IPC: G11C19/00
Filed: 1975-03-20
Abstract: 1491821 Shift register memories HEWLETT PACKARD CO 20 March 1975 [10 May 1974] 11670/75 Heading G4A A circulating shift register memory includes at 100-word shift register 10 coupled to a one-word shift register 12, logic switches 9, 11, 13, 15, 17 and 19 selectively coupling further one-word shift registers 14, 16 and 18 into the circulation path, and a switch controller 8 containing a read-only microinstruction memory and receiving input qualifiers from a detector 3 which detects "marker", "pointer" and "secondary pointer" words as they pass through shift register 12; this allows for editing and sub-routing. The "marker" serves as a reference point, the "pointer" "points" to the word it follows, and the "secondary pointer" is used in sub-routing. In normal operation the "secondary pointer" is in shift register 18 and is recirculated through logic switch 17, and the memory circulation path includes the registers 10, 12, 14, the "pointed-to" word being copied from shift register 14 into shift register 16 for display when the "pointer" is detected by detector 3. To move the "pointer" the "pointer" is entered into shift register 14 and the shift register 14 is temporarily decoupled from the circulation path. To delete a "pointed-to" word this word is entered into shift register 14 and the shift register 14 is decoupled from the circulation path until the "marker" is detected by detector 3, the word in shift register 14 being replaced by a NO-OP code. To insert a word the word is entered into shift register 16 from a keyboard and the shift register 16 is temporarily coupled into the circulation path so that the inserted word immediately precedes the "pointer"; the shift register 16 is decoupled from the circulation path when the "marker" is detected, the last word in the circulation path being left in shift register 16 until a word for display is entered on the next detection of the "pointer". For subroutining the shift register 18 is included in the circulation path, the "pointer" remaining the reference in the principal program and the "secondary pointer" being used to "point-to" a label identifying a subroutine, this label being detected by a comparator 6 receiving the output of shift register 10 and a desired identifier word previously entered from the keyboard into shift register 16. The memory includes a warning system which indicates when the memory is full or empty or the memory is full and the "pointer" is the last word stored.
Patent GB-865228-A (GB)
Title: Improvements in and relating to electrical connectors
Inventor: JOHANSON BENGT JULIUS
IPC: H01R13/627
Filed: 1958-04-11
Abstract: 865,228. Two-part couplings. UNITEDCARR FASTENER CORPORATION. April 11, 1958, No. 11674/58. Class 38 (1). A multi-contact two-part connector comprises an insulating male body member 1 (Fig. 1) and an insulating female body member 2, each provided with cross-walls, carrying similar resilient contact-members 30 (Figs. 23 and 24) and pivotally joined at one end by a hooked U member 60 (Fig. 5) which is secured to member 2 by projections at the end of its arm 67 swaged apart for this purpose when member 60 is in position. Hooked end 71 of member 60 engages with a hinge element 42 (Fig. 31) secured to member 1 by tongues 56 which snap into a slot in member 1 and also held by screws securing member 1 to base 95. At its opposite end member 1 has secured to it a spring latch member 88 (Figs. 27 and 28) having tongues 81 which snap into a slot in member 1. Members 1 and 2 are held with their contact-members engaged by a lug 90 on member 88 which passes through an opening 106 (Fig. 5) in cover 98 to engage member 2. When the latch 88 is moved to release lug 90 from member 2 the latter is forced outwards by the spring-pressure between the engaged contacts carried by members 1 and 2 so as to produce disengagement. It is stated that the disengaging force may produce sufficient movement of member 2 to cause disengagement of the hook member 60 from the hinge element 42. The contacts 30 (Figs. 23 and 24) are formed of resilient sheet-metal and fit into open-ended channels 9 formed in the cross walls on male and female members 1 and 2 (Figs. 19 and 26). These channels are continued into the thickness of the members 1 and 2 which are then pierced by U-shaped slots which accommodate the U-shaped terminal elements 36 of the contacts 30. Spring tongues 39 snap into place when the contacts are in position so that withdrawal is prevented. Figs. 16 and 18 show pairs of contacts in position in male and female, members respectively, while in Fig. 26 these contacts are shown in engaged position. Specifications 865,229, 865,230 and 865,231 are referred to.
Patent GB-234271-A (GB)
Title: Improvements in envelopes
IPC: B65D27/22
Filed: 1924-05-12
Abstract: 234,271. Dickson, C. P. May 12, 1924. Envelopes.-In envelopes of the kind wherein a tab on the closure flap is provided with lateral ears which releasably interlock against the narrower offset portion of a slit provided in the body of the envelope, the ears d, Fig. 1, are provided with barbs or rearward extensions to increase their interlocking engagement. An opening f of any desired shape may be provided to enable the tab c to be tucked into the envelope and then passed out through the slit e, which is slightly wider than the distance across the ears d. The slit e may be of curved or angular formation, as shown in Fig. 3, or a cut-out slot may be used.
Patent GB-170264-A (GB)
Title: Process of manufacturing liquid hydrocarbons from fish oils
IPC: C10G3/00
Filed: 1921-04-22
Abstract: A mixture of hydrocarbon oils said to resemble petroleum is produced by distilling a mixture of Japanese acid clay and fish oils at a temperature preferably not below 500 DEG  C.  The product may be fractionally distilled, and the fractions purified by the usual acid and alkali treatment.  Fish oils specified as suitable are herring oil, sardine oil, and salmon oil.  Uncondensable gases pass off. According to the Specification as open to inspection under Sect. 91 (3) (a) shark oil or any fatty oil may be treated.  This subject-matter does not appear in the Specification as accepted.
Patent GB-251672-A (GB)
Title: Improvements in and relating to electric arc welding apparatus
IPC: B23K9/073
Filed: 1926-05-04
Abstract: 251,672. British Thomson-Houston Co., Ltd., (Assignees of Weed, J. M.). May 4, 1925, [Convention date]. Heating by electricity. - Tn arc welding, to prevent defection of the arc due to the air gap in the magnetic field surrounding the electrode, the work support 3 is made of magnetic material and a yoke 14 of magnetic material is rotatably mounted on the electrode holder. An inlay 4 of materials, such as copper, possessing high heat conductivity, is fitted to the support 3 slong the line of movement of the electrode 10.
Patent GB-179176-A (GB)
Title: Improvements in aircraft
IPC: B64C29/00
Filed: 1922-04-26
Abstract: 179,176. Pateras Pescara, Raul, Marquis of. April 27, 1921, [Convention date]. Aeroplanes; helicopters; propelling.-A helicopter is supported by propellers 10, 11 arranged centrally above and below the car, the propellers being adjustable to serve as fixed planes for forward flight. The propellers are driven through bevel gear and a clutch 19 from an engine 20, which can be coupled by a clutch 21 to a rear propeller 22. The propellers 10, 11 are held in a transverse position for forward flight by means indicated at 14, 15, which may be as described in Specification 179,182. A radiator 28 is arranged at the front of the car. Hand-wheels and skids.-Pairs of wheels 33 and: skids 36 are partially enclosed by fairings 38, and are carried by a frame 37 passing through the hub. of the lower propeller.
Patent GB-929124-A (GB)
Title: Device for removing wrinkles from a piece of fabric
IPC: D06F67/04
Filed: 1961-03-30
Abstract: 929,124. Feeding arrangements for mangling. A. J. SNEL. March 30, 1961 [May 10, 1960], No. 11787/61. Class 138 (2). [Also in Group XVI] Pieces of fabric, e.g., bed sheets, have creases removed before mangling by passage along a plate 3 having diverging strips 8, the pieces being held in engagement with the strips by a length of flannel or similar material attached at one end to a hinged flap 1 and at the other end to a weight 6.
Patent GB-684862-A (GB)
Title: Improvements in or relating to electric wave amplifiers
IPC: H03F1/54
Filed: 1950-05-11
Abstract: 684,862. Valve amplifying circuits. SOC. D'ELECTRONIQUE ET D'AUTOMATISME. May 11, 1950 [May 11, 1949], No. 11799/50. Class 40 (vi). In an intermittently-operated D.C. coupled amplifier drift is reduced by a voltage integrating circuit having its output connected to a bias circuit, and its input switched during rest periods to receive' a potential equal to the difference between the amplifier output and a reference potential while during work periods the input is left free. When relay 29 is in the released position, the amplifier comprising valves 1, 2 and 3 is disconnected from the input and output terminals 23, 24. The potential of the anode of valve 3, if different from earth causes capacitor 14 to charge or discharge and so vary the bias potential on valve 2, the effective capacity of capacitor 14 being increased by valve 12. During the work period switch 30 is closed to operate relay 29, disconnecting the input to valve 12 and connecting terminals 23, 24 to the amplifier. The valve 12 holds the bias on valve 2 constant for the duration of the short work period. Should the permissible drift be exceeded, relay 19 operates to light local and remote warning lamps 21, 22. When some reference potential, other than earth, is used, a battery 37 is added. Negative feed-back is provided by resistor 28, and a further circuit may be connected between terminals 23, 24 and thus disconnected from the amplifier during the rest period. The switch 30 may be operated by the input and a series of amplifiers controlled by multiple connections 31. Specification 620,140 is referred to.
Patent GB-591526-A (GB)
Title: Improvements in or relating to flue-less gas fires
IPC: F24C3/04
Filed: 1945-05-11
Abstract: 591,526. Gas fires. DENNISON, W. E. May 11, 1945, No. 11894. [Class 126] In a flue-less gas fire, a flat refractory heating element 4, lying in a plane parallel to the base 11 of the fire, is so disposed relatively to a reflector 8 that its front dimension 15 measured over the refractory components is not more than 60 per cent. of the width 16 of the opening of the reflector at the part where the said heating element is located, and the clearance 17 between the reflector and the back of the refractory component of the heating element is not less than 50 per cent. of the refractory dimensior 18, when the latter measurements are taken at right angles to the front of the gas fire in line with the deepest part of the reflector. The heating element 4 is in the form of rods 9 in a frame 10 and is supported at 5 over luminous burners 3. Air inlets 14 are spaced in the base of the fire to cool the reflector 8.
Patent GB-1137847-A (GB)
Title: A method of manufacturing imitation stone slabs or ornamental tiles, and tiles or imitation stone slabs when manufactured by said method
Inventor: POLTRONIERI ANNA
IPC: E04F15/08
Filed: 1966-03-18
Abstract: 1,137,847. Moulding tiles. A. POLTRONIERI. 18 March, 1966 [20 March, 1965], No. 11900/66. Heading B5A. In a method of moulding an ornamental tile, two layers of different concrete mixes, a wet mix and a dry mix 10 and 13, are superimposed in a mould with the interposition of a water permeable layer, e.g. paper. After setting under pressure the layer 10 which includes clips of a stony material, e.g. marble, is polished and then separated from the water absorbing layer 13 along the plane of the paper. The layer 10 constitutes the ornamental tile and the layer 13 a by-product to be used as a slab or crushed to provide filler material. A reinforcement, e.g. an iron wire netting may be embedded in the layer 13.
Patent GB-1380444-A (GB)
Title: Circular looms
IPC: D03D37/00
Filed: 1972-03-14
Abstract: 1380444 Circular looms MITSUI & CO Ltd (MITSUI BUSSAN KK) 14 March 1972 [15 March 1971] 11906/72 Heading D1E In a circular loom, radially disposed horizontal healds 9 are actuated by rods 11 which are selectively operated by a pattern device 15 comprising a continuously circulating endless punched pattern tape 42 passing over a magnet 43 which pulls the rods 11 inwardly if a hole is present in the tape so that selected rods are driven further inwardly by a segment 66 rotating with the pattern device, and acting on projections 14 on the rods 11, and the projections 14 on unselected rods 11 pass outside the segment 66 and hence their healds remain stationary. The healds are arranged in vertically spaced layers and are connected to the rods 11 by projections 12 fitting in elongated eyes 13; on their return stroke, the healds are pulled to their most outward positions by a magnet 46 around the outside of the loom. Weft inserting. Weft is inserted by shuttles 23 carrying sufficient weft for one circuit of the loom and which are picked by a magnet 21 on the end of a rotating roll 20. The shuttles are each removed from the shed after one circuit and a new one is inserted by an exchange device Fig. 4B (not shown) comprising a chute 59 down which empty shuttles fall, and a support 60 to which full shuttles are successively fed. A full shuttle is held by a pivoted cover 61 until the cover is tilted by an empty one to enable the magnet 21 to pick the full one.  Reeds, beating up motions. The reed 25 is arranged in sections suspended by springs 30 from the loom frame, and beating up is performed by a wheel 29 revolving around the loom spindle 39 at the end of a rod 27, and which presses on the reed sections to move them down to the fell. A guide 28 for the wheel is arranged on the upper surface of the reed.
Patent GB-858278-A (GB)
Title: Improvements relating to switching circuits
Inventor: FLORENTIN JOSEPH JOHN
IPC: H03K17/64
Filed: 1956-04-19
Abstract: 858,278. Transistor and thermionic discharge tube switching circuits. ELECTRIC & MUSICAL INDUSTRIES Ltd. April 18, 1957 [April 19, 1956], No. 1192/56. Class 40(6). In a switching circuit, a load L is arranged in a path between a high potential and a low potential source B 2 , B 1  with the ends of the load connected through interelectrodes paths of a transistor or thermionic discharge tube to an intermediate potential point, such as earth. Assuming the load to have a low impedance then, with both transistors T 1 , T 2  cut off the current through the load is determined by the potentials B 1 , B 2  and the resistors R 1 , R 2 . With both transistors fully conducting the ends of the load are both near earth potential and substantially no current flows in the load. With transistor T 1 , conducting and transistor T 2  cut off the current is determined by potential B 2  and resistor R 2  while with the state of the transistors reversed the current is determined by potential B 1  and resistor R 1 .