baber/WOPTO huggingface dataset:
Patent GB-625004-A (GB)
Title: A process for the manufacture of ammonium nitrate
IPC: C01C1/18
Filed: 1939-12-02
Abstract: A concentrated solution of ammonium nitrate is made by introducing dilute nitric acid and ammonia at the bottom of a liquid column in a saturator vessel from the upper part of which evaporation is effected at atmospheric pressure, <PICT:0625004/III/1> the reactants being thus introduced and the reaction effected at a superatmospheric pressure due to height of the liquid column, and the temperature in the reaction zone being kept below the boiling point of the solution under the increased pressure by mechanical circulation of liquor from the evaporation zone.  Nitric acid and ammonia are preheated in coils 1 and 2 by vapour from a saturator 7 in heat exchangers 3 and 4, and introduced into a lower annular zone of the saturator by a central pipe 6 and an annular distributer 5 respectively.  Recirculation is effected from an upper annular zone to the lower zone by means of a circulating screw disposed on a shaft 8 preferably by way of an annular space 7 formed by a jacket 7 about the vessel 11.  The upper part of the apparatus is provided with ducts for discharge of vapour and withdrawal of ammonium nitrate liquor.  Specification 474,181 is referred to.
Patent GB-916653-A (GB)
Title: Improvements in electromechanical unit
IPC: G08C19/02
Filed: 1960-09-12
Abstract: 916,653. Measuring electrically. ROBERTSHAW-FULTON CONTROLS CO. Sept. 12, 1960 [Sept. 15, 1959], No. 31360/60. Class 40(1). In an electromagnetic force balance unit contained in an explosion-proof housing in which an applied force, derived for example from a differential pressure, is applied to deflect a beam and movements of the beam are detected and used to control the current through a coil which is attached to the beam and located in an annular air gap defining a magnetic field order to produce a force to tend to rebalance the beam, a shunting ring of magnetic flux conducting material is positioned adjacent to the air gap and provided with means adjustable from outside the housing to vary the position of the shunting ring relative to the air gap and hence to adjust the sensitivity of the unit. Fig. 1 shows the preferred embodiment in which movements of lever 20 about diaphragm 32 in response to the application of the force to be measured at the end 25 of the lever 20 are communicated by spring 41 to the balance assembly 10 to deflect beam 40 about its crossed spring suspension 66, 67. The balance beam carries a plate of soft iron which co-operates with an inductor printed on the circuit board 87 to form a beam position sensing arrangement, while coil 110, shown in greater detail in Fig. 2, is also carried by the beam and moves in the annular air gap in the magnetic circuit of permanent magnet 52. The annular shunting ring 120 is mounted on spring bracket 121, the end of which bears against screw 130 in order that the position of the ring relative to the airgap may be adjusted from outside the housing. The beam is counterbalanced by adjusting-screws 83 and 84 and the coil 110 is wound on an aluminium former to provide a damping action. Measurement system.-Movement of the balance beam in response to the application of the force to be measured are detected by connecting the inductor printed on circuit board 87 in the frequency determining circuit of an oscillator. An output current is derived whose amplitude is proportional to the oscillator frequency and this current is utilized as a measure of the applied force and also to apply feed-back to the system by passing the current through the coil 110 whereby a force is developed on the beam to tend to rebalance it. Specification 790,368 is referred to.
Patent GB-445019-A (GB)
Title: Improvements in and relating to insulating bushings for electrical apparatus
IPC: H01B17/26
Filed: 1935-11-14
Abstract: 445,019. Protective arrangements. BRITISH THOMSON-HOUSTON CO., Ltd., Crown House, Aldwych, London. Nov. 14, 1935, No. 31557. Convention date, Nov. 22, 1934. [Class 38 (iv)] [See also Group XXXVI] An insulating bush. ing 14 is secured in ar aperture 15 in the casing g 11 of a transformer or other enclosed electrical apparatus by a cup. shaped over - voltage discharge member 17 which is compressed be. tween the casing and a nut 16 which is screwed on the inner end of the lead - through conductor 13 of the bushing. The discharge member, which is formed of a strong material having a high resistance at the normal working voltage and a substantial negative voltage-resistance characteristic, such as the material known under the Registered Trade Mark " Thyrite " and described in Specification 292,110, [Class 38 (iv)], has an outer conductive coating 20 connected to the lead-through conductor and an inner conductive coating 21 which is connected by a metal strap to the casing 11.
Patent GB-470496-A (GB)
Title: Television tube
IPC: H01J29/82
Filed: 1935-11-15
Abstract: 470,496. Cathode-ray tubes. RADIOAKT.-GES. D. S. LOEWE. Nov. 15, 1935, No. 31651. Convention date, Nov. 20, 1934. [Class 39 (i)] In television tubes with an aperture in a diaphragm 7, Fig. 1, electron-optically reproduced on the picture screen, the cathode-ray is concentrated on to this aperture by a preliminary concentrating system including a positively biassed electrode 5 which acts as a " suction anode ".between the diaphragm 7 and a Wehnelt cylinder 3 surrounding the cathode 1 and which is connected to means such as a potentiometer for adjusting its potential so as to control the preliminary concentration of the ray by varying the speed of the electron in the preliminary concentrating system. The cylinder 3 acts as a control grid with an aperture very close to the oxide spot on the cathode 1, which may be of the type described in Specification 455,084. The electrode 5 is an apertured plate very close to the grid 3 and is followed by a cylinder 6 which may be connected inside the tube to the cathode 1. The electrode 5 may serve additionally as a separate control electrode for temporarily blocking the cathode-ray in television systems in which the synchronizing signals are of the same type as signals for picture parts of maximum brightness. The cathode 1 may be electron-optically reproduced on the diaphragm 7 on a scale of 1 : 1 and the rays emerge from the diaphragm 7 with only a small divergence. The diaphragm 7 is connected to the final anode 9 and is reproduced on the picture screen by an electron-optical system 8, 9 as described in Specification 457,846. The grid 3 and cathode 1 are centred by a metal base S. Dimensions and voltages of the electrodes are specified. In a modified preliminary concentrating system, two ' cylindrical electrodes 6, 7<1>, Fig. 3, are provided between the electrodes 5, 7. The electrode 71 is longer and more positive than the electrode 6 and both may comprise metal or graphite coatings on an insulating tube 10 as described in Specification 466,188. The electrodes 6, 7<1> are connected respectively to the electrodes 5, 7, or the electrode 6 is insulated from the electrode 5. Specifications 432,485, 442,511, 452,650, 452,844, 453,270, and 461,235 also are referred to. The Specification as open to inspection under Sect. 91 comprises also other subject-matter described in Specification 466,188. This does not appear in the Specification as accepted.
Patent GB-507043-A (GB)
Title: Means for protecting razor blades
IPC: B65D83/10
Filed: 1938-11-02
Abstract: 507,043. Boxes for razor blades. GALLOY. J. D. Nov. 2, 1938, No. 31705. [Class 18] The blades are threaded on projections 6 formed on a plate 5 having side walls 7, and the plate is inserted in a sheath 1 having spring blades 2, 2<1> which bear against the under side of the plate and the upper side of the topmost blade respectively. The centre of the plate 5 is higher than the edges thereof.
Patent GB-967174-A (GB)
Title: Apparatus for and method of maintaining under controlled tension a travelling continuous web
Inventor: UACCARO ANGELO
IPC: D21F1/36
Filed: 1960-09-15
Abstract: 967,174. Feeding webs. COLUMBIA RIBBON & CARBON MANUFACTURING CO. Inc Sept. 15, 1960, No. 31764/60. Heading B6B. A device for feeding a web of electrically non-conductive material has electrostatic means having a plurality of electrodes located adjacent, but spaced from a web feed member or a brake member, frictionally engaging the web, such that variation of an electrostatic charge applied to the web varies the frictional engagement of the web with the member to control the tension of the web. As shown, a web 10 is drawn from a supply roll 11 past an inking roller 13 by a roller 15. The web is gi ven an electrostatic charge by a corona discharge device, such that the web adheres to the earthed surface 23 of the roller 15 and is fed by rotation of the roller without physical contact of the coated side 19 of the web. The device 21 comprises an elongated bar 24 having spikes 25. The web 10 is tensioned by a stationary bar 26 frictionally engaging the web and cooperating with a corona discharge device 27 which charges the web electrostatically, thereby causing it to be attracted to the bar 26 which thus imparts drag on the web. The applied voltage may be varied to control the drag on the web, e.g. in response to the decreasing diameter of the supply roll. In a modification, Fig. 4 (not shown), an additional feed roller 28 may replace the bar 26 having an electrostatic charging device 31. By adjustment of the speeds of the rollers 28, 15 a desired tension may be maintained in the portion 10a of the web.
Patent GB-220873-A (GB)
Title: Improvements in or relating to apparatus for wringing mops
IPC: A47L13/60
Filed: 1923-12-18
Abstract: 220,873. White, A. E., (American Scrubbing Equipment Co.). Dec. 18, 1923. Mop wringers.-A truck supporting a mopwringer comprises an open-sided frame adapted to carry two pails A, B one of which is placed beneath a wringer basin 15 disposed below a pair of wringing rollers 30, 31. The basin is provided at the bottom with a grid surface 16. The supports 11 at one end of the truck extend upwards obliquely to give free access to a pad B for carrying clean water. A shield 21 is provided to conduct back to this pail water falling from the mop on its way therefrom to the wringer. The rollers 30, 31, are located in bearings in a pair of longitudinally-slotted cross-bars 13. The roller 30 is slidably mounted and is adapted to be resiliently pressed towards the roller 31 by means of a rocker piece 32 and springs 34. The roller 31, of corrugated form, is provided on each side with a metal head 38 having a rib 39 formed with a lug 42 for engagement with one of two notches 40 in one of the cross-bars 13. The lug is located to one side of the centre of the roller and the heads 38 are interchangeable so that altogether four different positions for the roller may be obtained.
Patent GB-774142-A (GB)
Title: Improvements in or relating to appliances for promoting respiration
IPC: A61H31/00
Filed: 1954-11-03
Abstract: 774,142. Artificial respiration apparatus. ANTHONY, A. J. Aug. 24, 1955 [Nov. 3, 1954], No. 31828/54. Class 81(2) Artificial respiration apparatus comprises a chest-supporting base, means for supporting the shoulders and upper arms and a strap for passing over the patient's back, a single oscillatory lever, which directly carries the supporting means and the strap, being pivotally connected at one end to the base and arranged at the other end for actuation to lower the support means while drawing the strap more taut and vice versa. A platform 51 is provided with an inclined padded chest support 52. A forehead rest 75 is supported by rods 76 which are longitudinally adjustable in a ground rest 77 and tubes 78 attached to the platform 51. A bifurcated operating lever 66 is fitted in sockets 64 at each end of a shaft rotatably disposed beneath the chest support 52. A strap 68 is secured across the limbs of the lever 66 and bears against the back of the patient when positioned on the chest support 52. Straps 73 carried by crossbars 72 on each limb 65 of the lever 66.are secured round the upper arms of the patient. The strap 68 is formed in two parts connected by tension springs 69 and carries a pad which bears against the patient's back. Springs 63 connect the shaft with the platform 51. As the lever is pivoted downwardly, the strap 68 is tightened across the patient's back and the shoulders are lowered. On raising the lever 66, the downward pressure of the strap 68 is released and the shoulders are raised by the straps 73. The lever 66 may be formed in sections connected together by pin and socket joints.
Patent GB-747841-A (GB)
Title: Manufacture of aliphatic diamines
Filed: 1953-11-17
Abstract: Saturated aliphatic diamines are manufactured by heating ammonia with saturated aliphatic glycols or saturated aliphatic hydroxy amines, in the presence of a metallic ruthenium catalyst and in the presence or absence of hydrogen.  The ruthenium catalyst may be present in the form of the finely-divided metal, or, when hydrogen is present, in the form of a compound of ruthenium which is reducible to the metal in situ.  Alternatively, the compound may be activated by treatment with hydrogen to form the metal prior to use.  Preferably the catalyst is supported on a carrier such as charcoal, silica gel or alumina.  The amount of ruthenium is generally from 0.5 to 10 per cent by weight of the substrate and may vary from 1 to 20 per cent of the total weight of catalyst and support.  In general, a minimum of 5 equivalents of ammonia per equivalent of substrate is used with temperatures ranging from 100 DEG  to 400 DEG  C. and pressures of 30-1500 atmospheres.  The preferred temperature range is from 150 DEG to 250 DEG  C. at a pressure of from 700 to 1500 atmospheres or more if hydrogen is used and from 400 to 1000 atmospheres or more in the absence of hydrogen.  Suitable starting materials include alpha, omega straight-chain alkanediols having at least 6 carbon atoms, vicinal alkanediols, such as 1,2-propylene glycol, 1,2-butylene glycol, branched-chain alkanediols, such as 3-methylhexane diol, and polyether glycols such as triethylene glycol and dipropylene glycol; hydroxyamines such as 1-amino-propanol-2, and hydroxyamine derivatives of the above glycols may also be used.  Operation may be batchwise or continuous, and in vapour phase, liquid phase or heterogeneous phase.  Diluents or solvents such as others, water or hydrocarbons may be added.  In examples (1) to (3) hexamethylene glycol is converted to hexamethylene diamine by the action of ammonia in the presence of a ruthenium-on-charcoal catalyst with, or without, hydrogen; (4) octamethylene glycol is converted to octamethylene diamine, and (5) decamethylene glycol is converted to decamethylene diamine using conditions similar to examples (1) to (3); (6) ethanolamine is converted to a product in which ethylene diamine and piperazine are identified.
Patent GB-868901-A (GB)
Title: Filtration process for starch
IPC: C08B30/08
Filed: 1959-09-18
Abstract: The water content of a starch slurry is lowered to a level of 33-45% when the slurry is dewatered, by adding to the slurry a minor proportion of an oxyalkalene-containing compound having surface-active properties, which compound has the property of reducing the water content of the slurry below that which results from dewatering the slurry without the use of such a compound; and dewatering the slurry.  The preferred amount of the compound is 0,1%, but from 0,02% may be added.  The starch may be that derived from corn, wheat, potato, tapioca, sago or cassava and may be in the form of raw starch, lightly treated oxidized starch, heavily treated oxidized starch or thin boiling starches.  The compounds may be divided into 12 groups in which the following substances are specified:-Group (1) Polyoxyethylene-dilaurate, -monolaurate, -monostearate, and polyoxyethylene esters of mixed fatty and resin acids; (2) Polyoxyethylene sorbitol-pentalaurate, -hexalaurate, -4,5 oleate, -tetraoleate, -tetra-tall oil, and -dilaurate; (3) Polyoxyethylene sorbitan-monostearate, -dilaurate, -trioleate, and -monolaurate; (4) Sorbitan monolaurate and mono-oleate; (5) Diethylene glycol monolaurate; (6) Glyceryl-monolaurate, -oleostearate,-monostearate, or-monoricinoleate; (7) Polyoxypropylene stearate; (8) Polyoxyethylene lauryl ether; (9) Polyxyethylene lauric acid laurate; (10) Glycerol mannitan laurate; (11) A condensation product of polyoxypropylene and polyoxyethylene; (12) Nonyl phenoxypolyoxyethanol.ALSO:The water content of a starch slurry is lowered to a level of 33-45% when the slurry is dewatered, by adding to the slurry a minor proportion of an oxyalkylene-containing compound having surface active properties, which compound has the property of reducing the water content of the slurry below that which results from dewatering the slurry without the use of such a compound; and dewatering the slurry.  The preferred amount of the compound is 0,1%, but from 0,02% may be added.  The starch may be that derived from corn, wheat, potato, tapioca, sago or cassova and may be in the form of raw starch, lightly treated oxidised starch, heavily treated oxidised starch or thin boiling starches.  The compounds may be divided into 12 groups in which the following substances are specified:-Group (1) Polyoxyethylene-dilaurate, -mono-laurate, -monostearate, and polyoxyethylene esters of mixed fatty and resin acids.  (2) Polyoxyethylene sorbitol-pentalaurate, -hexalaurate, -4,5 oleate, -tetraoleate, -tetra-tall oil, and -dilaurate.  (3) Polyoxyethylene sorbitan-monostearate, -dilaurate,-trioleate, and -monolaurate.  (4) Sorbitan monolaurate and monooleate.  (5) Diethylene glycol monolaurate.  (6) Glyceryl-monolaurate, -oleostearate, -monostearate, or -monoricinoleate.  (7) Polyoxypropylene stearate.  (8) Polyoxyethylene lauryl ether.  (9) Polyoxyethylene lauric acid laurate.  (10) Glycerol mannitan laurate.  (11) A condensation product of polyoxypropylene and polyoxyethylene.  (12) Nonyl phenoxypolyoxyethanol.
Patent GB-948234-A (GB)
Title: Latch
Inventor: FULLER FRANCIS CLIFFORD
IPC: E05C19/06
Filed: 1962-08-20
Abstract: 948,234. Latches. NORTH AMERICAN AVIATION Inc. Aug. 20, 1962, No. 31946/62 Heading E2A. A latch 1 comprises a portion 2 with a projecting tongue 10 and a portion 4 having a projection 20 for engagement with the tongue, the portion 2 having a cam surface 12, 14 and the portion 4 having a guide 24, 26 for the portion 2, the cam surface 12, 14 and the guide 24, 26 being adapted to apply an increasing force to the hasp portion to press the tongue towards the projection and into engagement therewith during movement of the parts to a latching position. As shown, a groove 8 on the portion 2 affords flexibility of the tongue 10.
Patent GB-352352-A (GB)
IPC: H01J61/10
Filed: 1930-10-24
Abstract: 352,352. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Assignees of Patent- Treuhand-Ges. fur Elektrische Gl³hlampen ; 11, Ehrenbergstrasse, Berlin.) Oct. 24, 1930, No. 31995. Convention date, Nov. 29, 1929. [Class 39 (i).] In a positive - column luminous-discharge lamp a metal vessel 9 mounted within the lamp bulb 1 encloses an incandescent cathode 12, the anode 18 being mounted adjacent to the open end of a laterally projecting nozzle 17 provided near to the upper end of the casing, which is closed by a metal cover 10. A plate 11 of insulating material closing the lower end of the casing 9 is apertured to receive two glass tubes 15, 16 which extend from the pinch 3 and enclose wires 13, 14 supporting the cathode 12. The metal vessel 9 is supported by a wire 8 connected to a leading-in wire 4, and the anode 18, consisting of a transverse wire, is supported by a wire 19 connected to a leading-in wire 7. Cathode leading-in wires 5, 6 are connected to the wires 13, 14. The bulb is preferably filled with a rare gas, or may contain a mixture of a rare gas and a common gas or metal vapour. The discharge may be started by using the metal casing 9 as an auxiliary electrode by connecting it temporarily to the anode leading-in wire, a time-switch or other device being provided to disconnect it automatically.
Patent GB-1393410-A (GB)
Title: Conveyor installation
IPC: B07C3/08
Filed: 1972-07-07
Abstract: 1393410 Transferring between conveyers ORGANISATION RALFS KG 7 July 1972 [9 July 1971] 32028/72 Heading B8A In a conveyer installation comprising a vertical path 10 intersecting horizontal paths each having, at the intersection region, a main path 14 and a branch path 15 interconnected upstream of the intersection region by a switching device, a pivotal tongue 22 is operative, in response to an address on a container 16, to direct the container so as to continue its horizontal or vertical travel or to be diverted from the path 10 on to the main path 14 or from the branch path 15 to the path 10. The vertical path comprises a pair of opposed belts X, Y whilst the main path comprises flat belts.
Patent GB-265349-A (GB)
Title: Improved manufacture of coal gas
IPC: C10B21/20
Filed: 1925-12-18
Abstract: 265,349. South Metropolitan Gas Co., and Evans, E. V. Dec. 18, 1925. Carbonizing processes. - A high temperature retort is steamed to generate a mixture of coal gas and water gas to which is added coal gas from a low temperature retort heated by waste heat from the high temperature retort setting. In an example horizontal retorts, charged full with 10-13 cwt. of coal and heated to 1050- 1100‹ C., are steamed for the last 90 minutes of the carbonizing period and the gases obtained are mixed with gas from a low temperature retort adapted to carbonize about ton for every ton of coal carbonized in the high temperature retorts. If the heat from the setting is insufficient a little producer gas may be introduced. The gases from both retorts are preferably couled before mixing in order to keep separate the dissimilar tars.
Patent GB-245112-A (GB)
Title: Improvements in or relating to spring mountings for the wheels of vehicles, particularly road automobiles
IPC: B60G11/08
Filed: 1925-12-18
Abstract: 245,112. Siran, R. J. H. Dec. 19, 1924, [Convention date]. Springs, arrangement of. -In a spring mounting for a front wheel of a motor vehicle and comprising upper and lower transverse cantilever springs having their free ends linked together by a bracket carrying a stubaxle, the stub-axle is inclined downwardly from the bracket and the lower spring is longer than the upper one so that when the springs deflect under shock, the stubaxle approaches the horizontal. As shown, two transverse springs 1, 2 are bolted to the frame at 1<a>, 2<a> and have their ends connected by longitudinal pivots 1<b> 2<b> to brackets 3 whir,h carry the stub axles 4 of the wheels. Each spring has two full length leaves bent one around the other at their ends. The effective length of each arm of the lower spring is longer than that of the upper spring and lines joining the points 1<b>, 2b are out of the vertical.
Patent GB-178484-A (GB)
Title: Improvements in or relating to apparatus for use in manufacturing fibre boards
IPC: D21J1/00
Filed: 1920-11-12
Abstract: 178,484. Chew, M. Nov. 12, 1920. Boards; pulp, preparation of.-In apparatus for producing fibre board, chip waste is moistened and steam heated for 10 to 24 hours in a container 1, transferred by an endless chain of buckets 4 to a beater 6, which may be a ball mill, separated from tailings by a screen 10, passed to a receptacle 12 wherein a screen 16 collects and a felt roll 17 takes off strips of fine shredded pulp. This pulp with water passes down a shoot 20 into a vat 21 from which it is pumped to an agitating tank 25 and from thence over slats 31, 32 in a receptacle 30 to a press 33, which is preferably hydraulic. The boards thus formed are dried in kilns and finally waterproofed. The tailings from the screen 10 pass through a pipe 13 to a ball or roller mill 14 and from thence to a pipe 11 leading to the receptacle 12.