baber/WOPTO huggingface dataset:
Patent GB-863498-A (GB)
Title: Purifying piperazines by distillation
IPC: C07D295/023
Filed: 1959-01-29
Abstract: 2,3-Butylene glycol present as an impurity in either 2,3,5,6-tetramethylpiperazine or 2,3,5-trimethylpiperazine is removed therefrom by adding a co-distillation agent which, with the 2,3-butylene glycol, is then distilled off azeotropically. Specified co-distillation agents include aliphatic hydrocarbons, e.g. octane, 2-methyl octane, 3-methyl octane, 2,3-dimethyl octane, 2,7-dimethyl octane, nonane, decane, 3-methyl heptane, 4-ethyl heptane, and mixtures such as petroleum fractions containing octane, nonane and decane; cycloaliphatic hydrocarbons, e.g. ethyl cyclohexane and isopropyl cyclohexane; aromatic hydrocarbons, e.g. toluene, xylene, ethyl benzene, diethyl benzene, cumene, diisopropyl benzene, ethyl toluene, n-propyl benzene, tert-butyl benzene, and 1,3,5-trimethyl benzene; and nuclear chlorinated aromatic hydrocarbons, e.g. chlorobenzene, 2-chloro-1-methyl benzene, 3-chloro-1-methyl benzene and 4-chloro-1-methyl benzene.  Co-distillation agents boiling within the range 120-170 DEG C. are preferred.  The distilled azeotrope separates into two phases on cooling, the lower comprising the 2,3-butylene glycol and the upper comprising the co-distillation agent, which is returned to the column.  In a batch process, when the 2,3-butylene glycol has been entirely removed, water is added to the column and the co-distillation agent is distilled off azeotropically therewith.  After distilling off remaining water the purified tri- or tetra-methylpiperazine is finally distilled at 165 DEG  to 168 DEG C. or at 175 DEG  to 183 DEG C.  In a continuous process the piperazine is removed from the base of the column and fractionated in a second column.
Patent GB-819547-A (GB)
Title: Improvements in or relating to electromagnetic interaction pumps
Inventor: HUTCHINSON WILLIAM GEORGE
IPC: H02K44/04
Filed: 1957-01-30
Abstract: 819,547. Interaction pumps. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Jan. 6, 1958 [Jan. 30, 1957], No. 3205/57. Class 35. In an electromagnetic interaction pump having stators 11 on either side of a flat pump channel 1, the stators are removable for maintenance by remote handling. The stators are supported by pins 17 on arms 16 pivoted at 19 in a carriage 18. The upper end of each arm 16 has a peg 23 riding in a slot 21 in a cam plate 24, these being fixed to a boss 31 through bridge pieces (not shown). Movement of the boss by means of a screw 28 running in a nut 30 secured to the carriage 18 causes the stators to move towards or away from the channel 1, an abutment being provided to prevent pressure on the channel. The carriage 18 has lifting lugs 22 and runs vertically on bifurcated guides 20. The pump assembly is beneath shielding 37 and in a gas-tight container 38 having a rectangular access shaft 39 passing through the shielding and having strengthening ribs 44 filled with concrete. The pump leads 56 pass through a minor plug 57 in a major concrete shielding plug 58 to a terminal box 54. To remove the stators 11, a cap 41 is removed allowing the withdrawal of plug 58 by lifting lug 61. Tha screw 28 is then screwed down by means of its squared end 29 taking with it the boss 31 and cam plates 24. The pegs 23 on arms 16 ride up slots 21 in the cam plates drawing the stators away from the channel. The carriage, with stators 11 and minor plug 57, is drawn up shaft 39 on guides 20. The stators are replaced by reversing the procedure. Excessive lateral expansion of the channel is prevented by the stators. Axial expansion of the duct is accommodated by expansion bellows (not shown) where it enters and leaves the container 38 which may be filled with nitrogen through pipe 53, and the guides 20 are pivoted to allow differential thermal expansion.
Patent GB-1420437-A (GB)
Title: Methods of and apparatus for testing vehicles or other  apparatus
IPC: G01R31/00
Filed: 1972-01-25
Abstract: 1420437 Testing electrical apparatus and motor vehicles G K N TRANSMISSIONS Ltd 24 Jan 1973 [25 Jan 1972] 3340/72 Heading G1U An apparatus is tested by performing a specified sequence of tests, instructions for performing these tests being visually displayed and the display changes when each operation has been correctly performed, test result data also being furnished. In the testing of a motor vehicle, signals from the vehicle and from ancillary test equipment are delivered to the test apparatus via a 28-way socket. Certain signals, 20-1 to 20-4, are fed to a stepping switch 18a which sequentially applies them to a voltage comparator 19 via scaler 21 and switch 18b. Other signals e.g. H.T. spikes from the spark plugs or squarewaves representing dwell are first converted to representative D.C. voltages before passing through switch 18b to the comparator. Information on the desired Specification is derived from a card or tape reader 22 which also compares a vehicle model identification signal with the card of tape identification. If these agree the tests are allowed to proceed. The reader 22 produces two signals representing the high and low  levels of the desired Specification for each check. The digital signals are converted to analogue and  fed to the comparator 19. The comparator provides three outputs 54-56 representing above, below, or within Specification. These are used to illuminate a go/no-go indication on the test apparatus or may be used to cause the print-out of the test result to be effected in different colours. When the test has been completed, a generator 29 produces signals which advance the tape reader 22, stepping switches 18a, 18b and operate the print-out. The signals are produced by confirmation that the stored data record is present, the test output sheet is in position and that the previous test has been completed either by reception of a signal from the illuminated instruction panels on the apparatus Fig. 3 (not shown) or from a hand operated control. Various forms of apparatus measurement indication and instruction panels are illustrated Figs. 3, 5 (not shown) and an example of punched card data store Fig. 4 (not shown).
Patent GB-548203-A (GB)
Title: Improvements in means for releasing gliders from aeroplanes or for similar purposes
IPC: B64D1/04
Filed: 1941-03-12
Abstract: 548,203. Releasing bombs from aircraft. LOBELLE, M.J.O., and MALCOLM, Ltd., R. March 12, 1941, Nos. 3367 and 13241. [Class 9 (ii)] [Also in Group XXXIII] Towing and release mechanism for gliders or for carrying and releasing bombs from aircraft comprises an attachment plate having a recess into which a plug fits, the plug having an eye for connection to the towing cable or load and a hookshaped projection adapted to engage a pivoted hook or hooks mounted in the socket behind the attachment plate and associated with locking and release mechanism, the construction ensuring that whatever may be the direction of the pull on the eye the reaction upon the engaging surfaces of the hooks remains substantially unchanged. In one form, a substantially circular disc 27 having an eye 28 and a hook-shaped member 23 is held in position within a conical socket 21 by a hook 24 pivoted at 25. The tail end of the hook is connected by a link 32 to a three armed lever 34 pivoted at 35 and urged into a position in which it forms a locking toggle with the link 32 by a strong spring 45. A three armed lever 37 is pivoted to the lever 34 and normally hooks over a fixed spindle 47 to form a further lock, a spring plunger 54 on the lever 34 urging it into that position. Upon applying a pull to the lever in the direction of the arrow it is first disengaged from the spindle 47, and, after depression of the plunger 54 moves the lever 34 to disengage the hook 24 from the projection 23. If the pull on the eye 28 is not directly away from the socket the disc 27 tilts about one edge and withdraws the projection 23 clear of the socket 21. When in the locked position, one arm of the lever 37 depresses a rod 48 until it just projects through a hole 53 to indicate that the plug is locked in position. In another form, Fig. 4, a projection 61 on the plug is engaged by two pivoted hooks 60 having tail pieces connected to toggle links 66 pivoted to a spindle 67 passing through blocks 68 slidable in slots 69. Normally the blocks are held at the lower end of the slots by surfaces 82 on cams 80 mounted on a spindle 77 which has an arm, not shown, urged by a spring in a clockwise direction. Other springs 89 act through links 87 on extensions of the links 66 to assist the locking of the links and also to cushion the opening of the hooks 60. To open the hooks, the shaft 77 is turned by a drum 78 and cable 79 to cause projections 84 on the cams 80 to raise the spindle 67 to the top of the slots 69. The disc 93 of the plug has a groove fitted with a rubber ring 92. An indicator spindle 94 is moved by a lever co-operating with a cam ring on the drum 78. Another modification is described in which similar toggle links are moved downwardly to open the hooks. To unstick the plug should icing conditions prevail the hooks have projections which press down upon the upper end of the projection on the plug.
Patent GB-653746-A (GB)
Title: Improvements in or relating to a hitch
IPC: A01B63/112
Filed: 1948-02-06
Abstract: 653,746. Agricultural implements. FERGUSON, Inc., H. Feb. 6, 1948, No. 3513. Convention date, May 13, 1942. [Class 6(i)] The automatic depth control for a tractor and implement substantially the same as that described in Specification 653,745 is made adjustable to allow for differences in the weight of the towed implement. The initial compression of the spring 43, and thus the force required to initiate the power lift mechanism, is varied by a spring 110 which acts on the plate 109 loosely pivoted on the rod 108 and by the nut 112.
Patent GB-686446-A (GB)
Title: Improvements in or relating to process for producing heteropolymeric resinous material
IPC: C08G75/22
Filed: 1949-02-09
Abstract: Heteropolymers of sulphur dioxide and an aliphatic mono-olefinic compound containing not more than twenty carbon atoms per molecule or a conjugated diolefin hydrocarbon containing from four to six carbon atoms per molecule or a cyclo-olefin are made by heteropolymerizing in batches, semi-continuously or continuously, the sulphur dioxide and comonomer in aqueous emulsion, in the presence of a polymerization catalyst and an emulsifying agent effective in an acidic aqueous medium.  The polymerization is preferably conducted at a temperature within the range - 10 DEG  to 60 DEG  C. and, when required, in the presence of freezing point depressants, e.g. glycerine.  The reaction may be stopped before all the co-monomer has reacted.  Specified comonomers are 1-butene, 2-butene, propylene, isobutylene, pentene, hexene, butadiene, isoprene, methyl acrylate, methyl methacrylate, acrylonitrile, cyclohexene, vinyl chloride, vinyl bromide, and mixtures.  Suitable emulsifying agents are lauryl sodium sulphate, diamyl sodium sulphosuccinate, di - secondary - butyl naphthalene sodium sulphonate, dodecylamine hydrochloride, and dodecylamine sulphate.  Catalysts which may be used are nitrates of the alkali metals and ammonium, nitric acid, potassium persulphate, hydrogen peroxide, peracetic acid and cumene hydroperoxide.  The products may be used for coating and impregnating paper or cloth, as such or in admixture with other synthetic resins.  Specification 636,232 is referred to.
Patent GB-572068-A (GB)
Title: The manufacture of locking washers
IPC: B21D53/20
Filed: 1944-02-28
Abstract: 572,068. Making locking washers. FAN DISC, Ltd., and KILLEEN, L. W. Feb. 28, 1944, No. 3630. [Classes 83 (ii) and 83 (iv)] Punches.-A locking washer with overlapping external teeth, as described in Specification 389,369, is made by punching a central hole b, Fig. 7, and forming radial and part-circumferential slits i, j in a strip a, whereby the teeth k are displaced. The washer is then blanked out and forced through a reducing die to cause the teeth to overlap. The punching and slitting may be effected by concentric tools c, g, Fig. 3, and a bolster h at one stroke of the head e. The strip is fed to the left and at the next stroke a pilot f enters the hole previously punched. After another feed, a punch m, shaped to fit the teeth k, removes the washer from the strip and forced it through a reducing die p. In a modification, the slitting tool g or the punch m surrounds the pilot f, thus making the device more compact. Specification 553,383 also is referred to.
Patent GB-448492-A (GB)
Title: Improvements in and relating to throttling devices for pipes conveying liquids
IPC: F16L55/027
Filed: 1936-02-06
Abstract: 448,492. Valve components. JUNKERS & CO., GES., 35, Jtinkersstrasse, Dessau, Anhalt, Germany. Feb. 6, 1936, No. 3653. Convention date, Feb. 7, 1935. [Class 135] A throttle member 13 reciprocably mounted by a stem 15 in a pipe 10 for conveying liquid is guided and prevented from vibrating by means of a two-armed spring 18 connected to the member 13 on the face remote from the stem, which spring acts at right angles to the axis of the throttle member, its arms pressing against the inner wall of the pipe. The Figures show an S-shaped spring 18 pressing at its bent portions against the inlet 11 of the pipe. The stem is threaded in a bearing 16 having a stuffing box 17. In a modification, a U-shaped spring presses with both limbs against the inlet 11.
Patent GB-371966-A (GB)
Title: Process for de-frosting cold accumulators of apparatus for the separation of gaseous mixtures
IPC: F25J5/00
Filed: 1931-02-05
Abstract: 371,966. Separating gases by liquefaction. FRANKL, M., 234, Ulmerstrasse, Augsburg, Germany. Feb. 5, 1931, No. 3697. Convention date, Feb. 6, 1930. Addition to 246,172, [Class 8 (ii), Air and gases. Treating &c.]. [Class 8 (ii).] In apparatus for the separation of gaseous mixtures by liquefaction employing cold accumulators through which the mixture and the separated products pass alternately, the water and carbon dioxide deposited as rime in the accumulators a<1>, all, b<1>, b<11> are removed by passing through each of them in turn gas mixture (air) under higher pressure following the passage of a separated product (nitrogen) which has been preceded by that of mixture (air) under lower pressure. Oxygen circulates alternately through each of the recuperators c<1>, c<11>, the other passing air under higher pressure. The valves D<1>, G<1> for the supply of higher and lower pressure air, N<1>, O<1> for the discharge of nitrogen and oxygen and K<1>, L<1> for the delivery of low-pressure air to the rectifier are operated by compressed air against springs ; the valves r<1> .. w<1> are automatic check valves allowing the passage of compressed air to the condenser and of oxygen and nitrogen from the evaporator and rectifier.
Patent GB-952309-A (GB)
Title: Improvements in acoustic panels
IPC: E04B1/84
Filed: 1964-01-30
Abstract: 952,309. Laminates. H. A. GARROOD. Jan. 30, 1963, No. 3850/63. Addition to 924,960. Heading B5N. In a modification of the accoustic panel of the parent Specification the sides of the strips 4 are stepped so that the slots 6 are T-shaped in cross-section.
Patent GB-1493184-A (GB)
Title: Push-button tuning device
IPC: H03J5/08
Filed: 1975-01-29
Abstract: 1493184 Linkwork; slip couplings PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Jan 1975 [1 Feb 1974] 3901/75 Headings F2K and F2U [Also in Division H3] In a push-button turning device, a rotatable elongate adjusting member 43, Figs. 3, 4 and 7 is arranged to be coupled to the turning means 95 of a radio receiver and can be angularly adjusted by means of a slip coupling 43, 49, 53 and 59 which is arranged to transmit movement from a tuning knob 69 to the adjusting member and to slip to permit movement of the adjusting member independently of the tuning knob by means of preselection, members 83 which are adjustably attached to associated push-buttons 79. The adjusting member and the slip coupling each form part of an elongate assembly which is rotatably supported in two axially spaced bearings 63, 65. As shown in Fig. 3 a yoke 53 which is received within a slot 45 in the member 43 and which has a groove 55 co-operates with a groove 57 in a shaft 49 and a spring 59 to form the slip coupling 43, 49, 53 and 59. The spring 59 exerts a tilting moment on the yoke to prevent any backlash in the slip coupling. During rotation of the adjusting member 43 by pressing one of the push-buttons the shaft 49 remains stationary therefore only the friction of the shaft 61 has to be overcome so that the moment of slip can be arranged only to overcome the friction of the tuning components to be adjusted and that of the bearing 65. The adjusting member 43 is coupled to the tuning cores 95 by a slidable bar 87 which is coupled by a lever (109, Fig. 6, not shown) to a scale indicator (111). V-shaped raised portions 101 on a slidable strip 99 are actuated by ends (103) of the push-button rods 79 so as to actuate a wave range switch coupled to the strip 99.
Patent GB-232366-A (GB)
Title: Improvements in or appertaining to adaptors, terminals or connectors for making electrical connections
IPC: H01R31/02
Filed: 1924-02-15
Abstract: 232,366. Button, C. J. Feb. 15, 1924. Binding-posts and terminals. - For the purpose of connecting a number of wires to a single terminal, e.g. wires for telephones in wireless receiving apparatus, the terminal a is provided with two or more internal holes d to accomodate the wires f and a spring or elastic band e encircles the post to retain the wires f in position. The lower part g of the post may be tapered as shown to assist in retaining the wires f in position. In a modification a similar arrangement is adapted to be placed on the screw of an ordinary binding post, and in further modifications the wires f are held in place by a spring washer n fitted in a recess on the under side of the post a<1>, Fig. 5, to press the wire f aganst the side of the recess.
Patent GB-348524-A (GB)
Title: Improvements in or relating to rotary pumps and blowers
IPC: F04C2/348
Filed: 1930-02-05
Abstract: 348,524. Coupling rotary-pump parts to shafts. EYSTON, G. E. T., 329, High Holborn, London. Feb. 5, 1930, No. 3947. [Class 80 (ii).] ] A pump piston body rotates in company with I an external drum, shell, or rings mounted concentrically in an outer fixed cylindrical casing, the drum &c. and piston body having a driving connection in the form of a floating ring. In the pump shown, the rotor d is directly driven and has a pair of opposite radial arms s on one or both stub shafts, while one or each end of the drum n carries projections t, and a floating ring v, Fig. 4, engages these arms and projections by grooves w, x. The driving parts may be located in compartments z sealed off from the pumping- space or in the pumping-space or in an end cover. Each ring may be balanced, and the rings may be balanced as a whole by being spaced 90‹ apart. Lubricant is supplied through passages in the stubs. In a modification, the drum is primarily driven, and the rotor driven from it by rings &c. located within the ends of the rotor. Further, the rings are constrained by engagement of their interiors y with extensions of the stubs in the end covers, arranged to give rolling contact as described in Specification 320,398, [Class 110 (ii), Rotary engines &c.], which also describes a crank-shaft control also applicable. Specifications 279,141, 327,119 [both in Class 110 (ii), Rotary engines &c.], and 338,546, [Class 8 (i), Air and gases, Compressing &c.], also are referred to.
Patent GB-763332-A (GB)
Title: Improvements in and relating to alarm circuits particularly for low temperature storage cabinets
Inventor: BRECKNOCK HOWARD
IPC: F25D29/00
Filed: 1952-02-14
Abstract: 763,332. Temperature alarms. HOTPOINT ELECTRIC APPLIANCE CO., Ltd. Feb. 12, 1953 [Feb. 14, 1952], No. 3964/52. Class 118 (1). [Also in Groups XIX and XXXVII] In a temperature control arrangement for use in a refrigerator in which a bellows 1 operates upon a lever arm 9 causing contacts 15, 36 controlling the driving motor to open when, due to a low temperature in the refrigerator, the bellows 1 collapses to a predetermined volume, the lever arm 9 operates also upon a further pair of normally closed contacts 2, 3, these contacts being opened when the pressure within the bellows either exceeds one predetermined value or is less than a second smaller predetermined value. An arm 6 attached to the arm 9 has an insulated extension 8 which engages one or other of the members supporting the contacts 2, 3 when the pressure within the bellows 1 passes beyond its predetermined limits and thus opens the contacts. The contacts form part of the circuit of an alarm lamp which is consequently extinguished if the temperature within the refrigerator becomes either excessively high or excessively low or if a failure, such as a leak in the bellows 1, occurs in the pressure system. The warning lamp employs the same mains supply as the refrigerator and is thus also extinguished if the mains supply fails. Specifications 618,092, [Group XXXVII], and 666,939 are referred to.
Patent GB-110870-A (GB)
Title: Improvements in Acetylene Gas Generators.
Inventor: MARGRETH JOSEPH
IPC: C10H9/00
Filed: 1917-03-19
Abstract: 110,870. Margreth, J. March 19, 1917. Liquid raised up to solid; regulating head of liquid directly. -A generating-bell e is inserted into an open-ended tube f in the gas-bell b, and has a projecting gas-delivery pipe g which is inserted through a pipe h into a vessel c in the gasbell supplied with water by a pipe d. Escape of gas between the bell e and tube f and between the pipes g, h, is prevented either by delivering the gas in a horizontal direction through openings i, o, Fig. 1, or through horizontal projecting tubes, or by bending the ends of the tubes or by inclining them so that the gas is delivered clear of the tube f and pipe h. In place of the gasescape opening in the lower part of the generating- bell, a tube v, Fig. 5, passing from the upper end and terminating just above the lower end and inserted into a separate open-ended tube u in the gas-bell may be used. The generating-bell may in this case be outside the gas-bell. The gas-bell may be fixed or floating and may be provided with a number of generating-bells.
Patent GB-413230-A (GB)
Title: Improvements in scaffolding clamps
IPC: E04G7/14
Filed: 1934-02-07
Abstract: 413,230. Scaffold clamps. BURTON, S. F., 49, Sandon Road, Edgbaston, Birming- ham, and LOWE, A., Haden Cross, Halesowen Road, Old Hill, Staffordshire. Feb. 7, 1934, No. 3995. [Class 20 (ii).] A scaffold clamp comprises an intermediate grooved member and hinged clamping caps, one of the caps being adapted for clamping at both ends. The intermediate member 10 is grooved at 11 and 12 to receive the scaffolding members and arcuate clamping caps 15, 16 are hinged about pins 19 disposed at right angles in the central member. The caps 15 and 16 are provided with clamping bolts 21 at their ends, the bolt for the cap 15 being adapted to screw into the central member at 22, while the bolt for the cap 16 is adapted to screw into a lug 24 on the other end of the cap 15 so that the cap is clamped at both ends. The bolts are rotatably mounted in their respective caps by washers 27 and stops 29 may be provided on the caps.
Patent GB-170791-A (GB)
Title: An improvement in devices for the instantaneous release of horses from tar boilers and the like
IPC: B62C5/02
Filed: 1921-02-03
Abstract: 170,791. Gillard, W. A., and Palmer, C. A. Feb. 3, 1921. Shafts.-A device for releasing the shafts of tar-boilers or the like from the chassis comprises a sliding bolt q having ends r engaging eyes on arms c, g on the shafts and chassis respectively and acting as the hinge-pin therebetween, and a lever m pivoted to the chassis and engaging a projection s on the bolt q. A stop o serves to hold the lever in position and over which it must be sprung to withdraw the bolt.