baber/WOPTO huggingface dataset:
Patent GB-681842-A (GB)
Title: Improvements in the production and purification of cellulose esters of higher fatty acids
Inventor: BILLING JOSEPH
IPC: C08B3/10
Filed: 1949-08-19
Abstract: Higher fatty acid esters of cellulose which are contaminated with free higher fatty acid are purified by extracting the fatty acid by means of a solvent mixture of trichlorethylene with a hydrocarbon or hydrocarbons boiling between 70 DEG  and 150 DEG  C., the proportion of trichlorethylene in the mixture being at least 8.5 per cent by volume.  As an alternative, carbon tetrachloride may be used instead of trichlorethylene but it should be present in amount at least 40 per cent by volume of the solvent mixture. Petrol may be used as the hydrocarbon ingredient of the mixture. The extraction may be performed at any temperature between 20 DEG  C. and the boiling point of the mixture.  The higher fatty esters of cellulose are defined as those containing a radical of at least one fatty acid of 8 or more carbon atoms.  In an example, acetone-soluble cellulose acetate is introduced into a solution of stearic anhydride in ethylene chloride containing as catalyst perchloric acid or zinc chloride and hydrochloric acid.  As the reaction proceeds, the temperature rises and the cellulose ester dissolves.  Boiling water is added to evaporate the solvent and precipitate the cellulose aceto-stearate. The crude wet cellulose ester is washed with a mixture of petrol and trichlorethylene at 50 DEG  C.  Ten washes are given, the first few washes using a solvent mixture which has already been used before. The sixth and each succeeding wash is performed with solvent which is initially free from stearic acid.  Stearic acid may be recovered from the used solvent mixture by passing the solution through fuller's earth to remove colour and metallic impurities, and then distilling off the solvent.  The treatment may also be appliied to cellulose stearate, palmitate, aceto-palmitate, laurate, and aceto-laurate. Specifications 543,311, and 605,912, are referred to.
Patent GB-1216009-A (GB)
Title: Improvements in or relating to containers
Inventor: HEINS AUGUST
IPC: B65D88/54
Filed: 1968-05-08
Abstract: 1,216,009. Unloading vehicles. A. HEINS. 8 May, 1968 [3 June, 1967; 6 Oct., 1967; 11 Dec., 1967], No. 21673/68. Heading B8E. A container for transporting products such as grain, fodder, flour, pellets or the like has a bottom in the form of a V-shaped, downwardly drawn cone 1a provided with reticulate floor members 5a, 5b through which the product passes to discharge pipes 6a, 6b under the action of compressed air from pipes 4a, 4b. The discharge pipes are connected to a common member 8 having a flap 7 by which one or other of the discharge pipes can be closed. To improve the discharge through the longer pipe 6a an additional air supply pipe 9 is provided. The container may have a partition 10 and is one of a pair secured on a frame 2 which can be mounted on a vehicle. In Fig. 6, the floor member 5 comprises a filter 13 located between a perforated plate 12 and a plate 14 having stamped-out slots. In Fig. 7 (not shown), an apertured bottom member (23) of stepped construction has a control flap (26). Further stepped constructions are illustrated in Figs. 8-11 (not shown) together with means for providing air-flow. According to the construction shown in Figs. 12, 14, a bottom member 33 and a hood-like member 37 have perforations 34 provided with deflectors 35, some of which are at an angle of 10 degrees to the longitudinal axis of the member (33), Fig. 13 (not shown). In Fig. 12, air is fed via openings 36a, 36b and the product together with surplus air is discharged through openings 38a, 38b. In Fig. 15 an air-product outlet A and two air outlets B, C are controlled by pivoted flaps 50, 55, 56, the flaps 55, 56 operating together such that when outlet A is closed, outlet B is also closed. Opening of flap 56 with flap 55 provides additional air for accelerating the discharge operation and this may be further accelerated by opening air outlet C by the flap 50.
Patent GB-358610-A (GB)
Title: Method of preparing a therapeutic compound
Filed: 1930-07-17
Abstract: Remedies for injection, particularly for treating malignant growths, are prepared by mixing a dilute aqueous solution of ferric chloride with a dilute aqueous solution of adrenalin or a derivative thereof such as the hydrochloride, and then heating the mixture until it assumes a clear reddish brown colour, but not to such a temperature as to cause a black precipitate to form.  A temperature up to about 70 DEG  C. may be employed so as to cause pasteurization of the solution which is then stored in ampoules which may be again pasteurized.  The remedy may be used in conjunction with radiological treatment.  When used by intravenous injection the solution should be first partially neutralized.  The Specification as open to inspection under Sect. 91 (3) (a) refers to the use of ferric salts in general, in place of the chloride, and refers in particular to the nitrate and sulphate. This subject-matter does not appear in the Specification as accepted.
Patent GB-883873-A (GB)
Title: Travelling-wave tube
Inventor: BUHLMANN FREDERICK THEODOR
IPC: H01J25/38
Filed: 1959-06-24
Abstract: 883,873. Glass to metal seals. MULLARD Ltd. June 24, 1959, No. 21692/59. Class 36. [Also in Group XL (a)] In a travelling wave tube the envelope comprises precision bore glass portions 1, 4 of wide and narrow diameters respectively surrounding the gun and helix 6 respectively and sealed to opposite faces of a metal disc 2, the bores 1, 2 and 4 having precision bores and being accurately coaxial, preferably by the use of jigs in assembly. The object is to make parts 1, 2 and 4 all coaxial so that the tube can be withdrawn and replaced in magnetic focusing means without realignment of the latter and also to make the gun coaxial with the helix 6. In assembly the envelope parts 1, 2 are placed in a jig which engages the precision inner surface of 1 and the outer rim of disc 2, and sealed together and the envelope portion 4 is then inserted into the jig which engages the precision formed inner surface of 4 and sealed to the central boss 3 of disc 2. Disc 2 has precision formed inner and outer surfaces. The outer surface of the helix envelope 4 is preferably ground before putting it into the jig or alternatively after removal from the jig. After the parts have been removed from the jig the helix is inserted in 4 where it is firmly held and located by the inner surface thereof. Next the gun is mounted on its base, the base is located by a jig so as to be coaxial with the bore of helix envelope 4, and the base is sealed to gun envelope 1 so gun and helix are coaxial. The tungsten wire helix has a straight end conductor the end of which is bent in a loop and welded to metal disc 2 so that it can easily be earthed, the gun being operated negative to earth. The helix envelope 4 has small cavities or bubbles in its wall adjacent the inner surface thereof as described in co-pending Specification 851,099, to reduce the dielectric losses in the glass, especially at the gun end. End cap 13 is located by a jig and sealed to helix envelope 4. If helix 6 is not earthed it is not connected to disc 2. The disc 2 and end cap-collector 13 is of Ni-Fe alloy and need not have a central boss.
Patent GB-166592-A (GB)
Title: Improvements in electrical switches
IPC: H01H21/42
Filed: 1919-09-04
Abstract: 166,592. Dobson, E., and Foster Engineering Co., Dtd. Sept. 4, 1919. Switches, quick-action; switches, actuating.- In quick-action make-and-break switches, the pivot of the switch blade is located in front of the pivotal axis of the operating handle, and the rear end of the tension spring or springs is so connected to a crank arm on that axis, that, in operation, the medial axis of the spring moves across the switch blade pivot, the spring tension thus serving to hold the blade in either open or closed position without, the use of stops &c. Fig. 1 shows a parallel-motion two-pole switch provided with fuses e. The fuses connect the movable ccntact blades c<1>, which are mounted on insulating slabs d<1> carried by the pivoted linkage j<1>, i, j, the levers j being pivoted at k<1> in front of the pivoted axis q<2> of the operating lever q. The tension spring n connects the pivot pin o of the members i, j to a cross-pin connecting the crank arms p operated by the handle g. A pin-and-slot connection, or an arm m mounted on the cranked part q<1> of the spindle q<2>, and integral with the arms p may be employed to ensure positive operation of the .switch in opening and closing it. In a modification, the fuses and the parallel motion linkage are dispersed with. Fig. 5 shows a single-pole switch in which two tension springs n<1> are employed, one on either side of the switch blade t. The switch blade and the operating handle u are pivoted at t<1>, u<1> respectively, and the rear ends of the springs are connected to arms u<2> on the spindle u<1>, the arrangement being such that all the fixed contacts b<2> are dead when the switch is opened. Projections u<3>, u<4> on the pivot handle ensure positive operation, and the opening movement is limited by the rear end of the switch blade abutting against the supporting bracket. In a. modification, in which the blade remains alive in the open position, being connected to one line of the circuit, the switch blade, is of U-shape, and a single spring located between its arms is employed. Fig. 10 shows another modification in which two springs are employed, the rear ends of the springs being connected at different levels to arms on the spindle of the operating lever. In another modification, the two springs are connected to arms of different lengths, so that whilst in parallelism when the switch is closed, they diverge when it is opened.
Patent GB-654895-A (GB)
Title: Improvements in or relating to drafting gear employed on spinning frames
IPC: D01H5/68
Filed: 1948-08-17
Abstract: 654,895. Roller clearers; suction endcatchers for textile spinning machines. CARRIER ENGINEERING CO., Ltd., and WOOLARD, H. J. Aug. 17, 1948, No. 21737. [Class 120(ii)] A drafting head for a textile spinning frame has an individual underclearer roller for each thread and each underclearer is removably carried on a pivoted mounting and maintained in operative contact with a lower drafting roller by a resilient thrust element. In one embodiment, Fig. 2, an underclearer 16 mounted on a hollow spindle 21 carried in arms 19 is held against a lower front roller 8 by a spring- loaded plunger 25 bearing against a face of a cam 24 fixed on a shaft 17 on which arms 19 are pivoted. The cam 24 is shaped to determine the inoperative position of the underclearer 16, as well as its operative position. In another embodiment, Fig. 4, the underclearer 16 is mounted on plates 28 on either side of an apron 30, apertured to receive a suction nozzle 25 for; removing broken threads. Plates 28 and apron 30 are carried by a pair of arms 35 extending through holes in a comb bar 31 and having springs 36 arranged to urge the underclearer 16 against its associated lower drafting roller 8. The rear ends of arms 35 are offset to abut against a part 38 of comb bar 31 when the underclearer is in inoperative position. Specification 652,661 is referred to in the Provisional Specification.
Patent GB-722090-A (GB)
Title: Improvements in or relating to venetian blind ladder and like webbing
IPC: E06B9/382
Filed: 1950-11-07
Abstract: 722,090. Ladder webbing. FRENCH & SONS, Ltd., T., FRENCH, R., and FRENCH, G. F. Nov. 7,1951 [Nov. 7, 1950], No. 27160/50 Class 142 (4). [Also in Group X] Each shuttle used for weaving the cross straps inserts weft into only part, and always the same part, of every successive woven cross strap. As shown in Fig. 5, one shuttle inserts weft across the full width of the strap as far as x, and partway across from x to y, the other shuttle inserting weft in a complementary manner to leave a slot 18 for a lifting cord ; the part from x to y may be unwoven, in which case two thick warp threads may define the slot 18 ; conversely, weft may be inserted from x to y only, the two halves of the strap being therefore unconnected. In Fig. 6, unconnected half straps c, d, may be spaced apart instead of touching, and both shuttles may insert weft from p to q instead of as shown. A weftless cross strap may closely succeed a woven one. The cross straps may be staggered, alternate straps being near one edge of the main webs and the intervening ones near the other edge. These may be two rows of cross straps, those in each row being partly woven by one shuttle. Specifications 453,832, 512,835, 527,276, and 527,551 are referred to.
Patent GB-1465722-A (GB)
Title: Apparatus for separating liquids of lower density especially oil from water
IPC: B01D17/00
Filed: 1974-05-16
Abstract: 1465722 Separating oil from water EURO POLLUTION CONTROL SYSTEMS INC 16 May 1974 [16 May 1973] 21824/74 Heading BID An apparatus for separating oil from water (e.g. from ships bilges) comprises a settling chamber 8 having an inlet conduit 4 equipped with an air release valve 25 and a water outlet 13 leading to a filter 9, the outlet 13 being closed by an interfacial float 11 when the oil layer 14 extends down to the outlet 13. Pump 2 is capable of delivering liquids only. Oil is withdrawn through valves 31 into collapsible bag 30 as required, filtered water exits through pipe 21. Fig. 2 (not shown) illustrates a modification where the settling chamber 8 is above the filter, connection 15, wall sheet 10 and oil outlet are omitted, and on filling with oil the apparatus is discarded. Fig. 3 (not shown) describes a flap air release valve in place of valve 25. The filter material may be three layers the pore size decreasing towards the outlet and may be oil resistant open pored foamed polyester or polyether (cross linked with isocyanates, diamines, or glycols), or be polyurethanes or polyisocyanates. The housing 1 may be translucent.
Patent GB-222295-A (GB)
Title: Improvements relating to electric warning horns
IPC: G10K9/22
Filed: 1923-08-31
Abstract: 222,295. Harris & Sheldon, Ltd., and Sellers, T. E. Aug. 31, 1923. Pivoting-adjustments. - An electric horn is secured to a vehicle by means of an extension 8 of the plate 1 carrying the electromagnet, the extension being formed with two parallel lugs 9 embracing a bracket 11 to which they are clamped by a bolt 12, different angular settings of the horn relatively to the bracket being obtained by means of a pin 14 in the extension 8 co-operating with recesses 13 in the bracket. The Provisional Specification refers also to a modified angularadjusting means comprising a pin associated with the transverse bolt co-operating with holes formed in the' bracket member.
Patent GB-597803-A (GB)
Title: Improvements in and relating to weighing machines or scales
IPC: G01G1/24
Filed: 1945-08-27
Abstract: 597,803. Weighing-machines. VANDOME & HART, Ltd., and ANDERSON, R. A. Aug. 27, 1945, No. 22017. [Class 143] In a weighing-machine of the kind having a torsion or other form of flexible resistance associated with an indicator or pointer which indicates, on a graduated scale, weights proportional to the movements of the balance beam, such movements are transmitted to the indicator by extensions on the beam and indicator, one such extension consisting of at least two resilient members which apply equal and opposing forces to, and at'their point of contact with the other extension, thereby to make connection between the two extensions solely by contact. Between the posts 2 mounting the beam 6, is a pillar 15 forked at its upper end 16, the base 16a of the fork extending transversely from one side of the pillar and being apertured at 16b for passage of a bar member 17. Across the open top of the fork, a torsion strip 18 is anchored at 18b to one limb of the fork, and at 18c to an arm 19 pivotally mounted at 21 outside the other limb and adjustable with regard thereto by screws 22. The member 17 is connected to a horizontal bar 17a, secured at its outer end to one of the load-supporting frame structures 11, by means of a flexible portion 17b. The upper end of member 17 is bent over at 17c and carries a bar 27 adjustable by nuts 28 and provided with ears 26 formed with knifeedges 26a which engage V-depressions 30a in the outer two of three resilient fingers 30 formed in an angle piece 32 secured to a clamp structure 34 upon which the pointer 23 is carried, and mounted on the torsion strip 18. The outside fingers 30 pass beneath ears 26 and are flexed to give them an upward bias while the central finger is biassed downwards and engages by means of a A-depression with the upper edge of the bar 27 which is formed as a knifeedge.
Patent GB-247147-A (GB)
Title: Methods of and means for use in binding insulated electrical conductors or insulating bare conductors or the like
IPC: H02G1/14
Filed: 1925-09-04
Abstract: 247,147. Hellermann, P. F. Feb. 9, 1925, [Convention date]. Cable and wire terminals.-The ends of the insulation of electrical conductors are bound or bare conductors insulated by a piece of rubber tubing which is put in position by first stretching it and then releasing it. The tubing is of less diameter than the part to which it is applied so as to hold bv friction. A tool for applying the tubing is shown in Fig. 1, and consists of a pliers-like instrument consisting of two jaws b hinged at a and maintained closed by a spring d. Each jaw carries half of an expanding pin i, on which the tubing to be stretched is slipped, or of two or more such pins of different thickness. The jaws may be held open to maintain the tubing stretched by a spring latch f on the handles c. An accessory for use with the stretcher consists of a curved plate m, Fig. 4, with one or more sets of fingers n, o differently spaced, to hold the tube stretched in one direction while the stretcher is operating to stretch it in a direction at right angles.
Patent GB-771211-A (GB)
Title: Improvements relating to beet harvesting machines
IPC: A01D27/02
Filed: 1955-08-02
Abstract: 771,211. Harvesting beet. GRUSE, H. J., [trading as GRUSE MASCHINENFABRIK, A.]. Aug. 2, 1955 [Aug. 21, 1954], No. 22118/55. Class 6(3).  A beet harvester comprises a topping and a digging tool 5, 6 arranged sequentially in the direction of travel of the harvester, each tool being associated with a separate transverse conveyer to carry the respective product transversely of the crop-row being harvested. The machine comprises a wheeled frame 1 towed by a tractor drawbar 4. Each tool 5, 6 is followed by a deflector 7, 7a which feeds the product on to a part of a longitudinally-partitioned endless conveyer 8 running transversely of the line of travel of the machine and delivering to receptacles 12, 13 for tops and beet. The conveyer is driven from the tractor through a shaft 10. In modifications, delivery is by separate parallel conveyers and the crop and tops are discharged into separate vehicles running alongside.
Patent GB-1260538-A (GB)
Title: Vehicles having a device for adjusting its inclination
Inventor: BOBARD EMILE
IPC: B62D49/08
Filed: 1969-04-30
Abstract: 1,260,538. Adjusting longitudinal or lateral inclination of vehicles. E. BOBARD and J. DELAUNAY. 30 April, 1969 [30 April, 1968], No. 22145/69. Heading B7D. A vehicle having two or more longitudinally or coaxially aligned load-bearing wheels is fitted with a device for adjusting its inclination comprising two auxiliary wheels on opposite sides of the aligned wheels, mounted on adjustable supports, a jack for adjusting each support, a hydraulic circuit responsive to displacements due to variations of load on the support connected to the jacks, and throttling valves in the circuit upstream of each jack. The device is preferably arranged so that the resultant of the forces acting on the vehicle during turning acts through the line joining the points of ground contact of the load-bearing wheels.  Fig. 6 shows a vehicle having central longitudinally aligned load-bearing wheels, and auxiliary wheels mounted on struts 6d, 6g. A pump 19 pumps fluid past the spools of two valves 20 back to a reservoir. If the vehicle tilts, pressure in chamber 24d or 24g increases, moving the spool of one or other of the valves, restricting the flow, and thus increasing the pressure upstream of the valves, which acts on a piston in a jack 16a, thus extending equally the two struts. Numerous alternative arrangements are described.
Patent GB-1139618-A (GB)
Title: Telecommunications exchange selection circuit
IPC: H04Q3/00
Filed: 1967-05-12
Abstract: 1,139,618. Automatic exchange systems. INTERNATIONAL STANDARD ELECTRIC CORP. 12 May, 1967 [13 May, 1966], No 22157/67. Heading H4K. A selecting chain for selecting a free output to an enabled input comprises a plurality of inputs connected via a distribution frame to different points on a closed ring of two state devices each arranged to break the ring and extend the connection to a corresponding output when that output is free. Thus the outputs have a cyclic order of priority with a different starting point in the cycle for each input. In one form (Fig. 4, not shown) incoming junctors are connected to free registers through two crossbar switching stages connected through a distribution frame. The 28 outputs H of each first switching stage are distributed over the inputs of selecting chains P. Each selecting chain is associated with a different second switching stage and comprises a ring of contacts each associated with a corresponding relay se. The outputs or verticals of a secondary stage have contacts v which are closed when the register associated with that output is free. In effecting a selection it is assumed that only one input of the selecting chain is enabled. A relay as is energized simultaneously closing contacts as. Those relays se associated with free registers and thus closed contacts v are energized over both windings in series thus opening their contacts in the selecting chain P. Earth potential from the enabled input of the selecting chain passes to the first open contact in the chain and thence to one winding of the corresponding relay se. This relay alone is maintained energized and the holding current through the single (low resistance) winding is sufficient to energize the so selected horizontal electromagnet Hs of the second switching stage.
Patent GB-586241-A (GB)
Title: A process for the diffusion of metals into iron and steel
IPC: C23C10/52
Filed: 1944-11-10
Abstract: In a process for the diffusion of metals into iron or steel the iron or steel is heated to at least 700 DEG C. in contact with one or more of the metals chromium, vanadium, molybdenum, niobium, tantalum, titanium, zirconium, manganese, nickel, cobalt, copper, and silicon and alloys of these metals and in the presence of sufficient ammonium chloride or an amine hydrochloride, such as methylamine hydrochloride or aniline hydrochloride, to produce a chlorinating atmosphere.  The article to be treated may be packed in the diffusing metal in a container with a calculated quantity of ammonium chloride to produce a desired coating and heated to a temperature between 700 DEG C. and 1,200 DEG C.  Potassium chlorate, bleaching powder, charcoal or an amine may be added to modify the atmosphere.  Specifications 572,703, 574,737, 575,676 and 577,504 are referred to.