baber/WOPTO huggingface dataset:
Patent GB-1393155-A (GB)
Title: Drug delivery device
IPC: A61K9/00
Filed: 1972-05-15
Abstract: 1393155 Administering medicaments ORTHO PHARMACEUTICAL CORP 15 May 1972 [17 May 1971] 22744/72 Heading A5R A device for delivering a medicament 2 to a body cavity comprises a member 1 which when inserted into the body cavity absorbs body fluid and expands, compressing a medicament containing tube 2 located within, around or on the member to dispense the medicament into the body cavity. The member may be formed from a polymeric substance e.g. cellulosic fibres or polymeric materials which itself expands when in contact with body fluids or from an expandible substance which contains a substance which expands when in contact with such fluids. The medicament containing zone may be a hollow in a cylindrical or prismatic member and the medicament may be contained in a collapsible tube 4 of aluminium or ptfe. The tube may be oval in cross-section and may have at least one internal rib or be formed of rectangular cross section to prevent complete flattening. The member may have an outer skin of flexible water permeable material having a high modulus of elasticity. A withdrawal thread 7 may be fitted. In a modification (Fig. 10 not shown) the tube (104) containing the medicament (103) is surrounded by rods (101) made from the stalk of laminaria seaweed which absorbs body fluid and expands. The tube 2 may be around the outside of the member 1, Figure 12 (not shown) or be located on the outer surface of the member 1, Figures 13 and 14 (not shown).
Patent GB-679637-A (GB)
Title: A process for the production of 2, 3, 4, 5-tetrahydropyrimidine derivatives and the derivatives so produced
Filed: 1949-09-02
Abstract: Tetrahydropyrimidine derivatives are manufactured by reacting ammonia, in the presence of an acidic condensation catalyst, with a monoketone having the carboxyl carbon atom and an adjacent carbon atom bearing at least one hydrogenatom arranged as members of an open chain of carbon atoms, or with a ketone condensation product which yields such a monoketone under the reaction conditions.  Suitable ketones are those of the general formula R.CO.CHR1R2 wherein R,R1 and R2 represent monovalent organic radicals, which are preferably hydrocarbyl in nature (e.g. alkyl, aralky, aryl or cycloalkyl radicals) but may contain substituents not interfering with the reaction (e.g. halogens such as chlorine or bromine, or hydroxy or nitro groups), examples being given of all these types of radicals, or R1 and R2 may also represent hydrogen, and especially ketones of the general formula RCOCH3 wherein R represents an alkyl radical of 1-8 carbon atoms.  The reaction is advantageously effected at a temperature between 15 DEG  and 150 DEG  C. (preferably 25-100 DEG C.) under superatmospheric pressure (preferably 3-50 atmospheres) with the ammonia and the ketone in a molar ratio of 0.25-1.5 (preferably 0.5-1).  The catalyst (e.g. hydrochloric, hydrobromic, nitric, sulphuric, phosphoric, acetic or oxalic acid, or zinc, ferric, ammonium or calcium chloride) may be used in an amount of 0.0001-0.1 (preferably 0.001-0.01) mol. per mol. of ketone, and an inert solvent (e.g. hexane or dioxane) may be present if desired. Examples describe the preparation of (1) and (2) 2 : 2 : 4 : 4 : 6 - pentamethyl - 2 : 3 : 4 : 5-tetrahydropyrimidine from acetone; (3) the same product from diacetone alcohol or mesityl oxide; (4) 2 : 4-dimethyl-2 : 4 : 6-triethyl-2 : 3 : 4 : 5-tetrahydropyrimidine from methyl ethyl ketone.  A list of additional starting materials and corresponding products is given.
Patent GB-1444935-A (GB)
Title: Transalkylation process
IPC: C07B61/00
Filed: 1973-05-14
Abstract: 1444935 Transalkylation process IMPERIAL CHEMICAL INDUSTRIES Ltd 1 May 1974 [14 May 1973] 22789/73 Heading C2C A transalkylation process comprises the transfer of a tertiary alkyl group from a tertalkyl-substituted phenol to the ortho- and/or para-position of a phenol unsubstituted in the ortho- and/or para-position by contacting in the liquid phase a mixture of the tert-alkyl phenol and the phenol unsubstituted in the ortho- and/or para-position with an activated earth and phosphoric acid at an elevated temperature. The activated earth preferably comprises 0À1 to 5 wt. per cent of the tertalkyl-substituted phenol and the phosphoric acid suitably comprises 0À1 to 0À25 times the weight of the activated earth. The transalkylation preferably takes place at 50 to 250 C. under atmospheric pressure.
Patent GB-615177-A (GB)
Title: Improvements in or relating to cathode ray tube apparatus
IPC: H01J29/89
Filed: 1946-07-31
Abstract: 615,177. Cathode-ray tubes. RAULAND CORPORATION. July 31, 1946, No. 2284S. Convention date, Dec. 29, 1945. [Class 39 (i)] A cathode-ray tube has a neck portion 2 axially symmetrical relative to a concave fluorescent screen 5 and a lens system 16 ... 19 is disposed on the same side of the screen as the beam and symmetrically relative to the neck portion and the screen. Preferably, the lenses are apertured and threaded on to the neck portion. The light from screen 5 passes through the window portion 3 which may be flat or curved and is provided with a transparent conductive coating 7 continuous with the wall coatings 6 and 15. Other parts of the envelope may be of metal. Cooling fins may be arranged on the envelope behind the screen. The curvature of the screen is such that its centre is at the centre of deflection of the beam, and it also corrects the field distortion inherent in the lens system.
Patent GB-598274-A (GB)
Title: Improvements in or relating to water or steam heating systems for buildings
IPC: F24D3/08
Filed: 1945-09-06
Abstract: 598,274. Hot-water supply and heating systems for buildings. ROBINSON, E. Sept. 6, 1945, No. 22999. [Class 64 (i)] In a combined hot water supply and heating system for buildings, comprising a hot water tank 5 for supplying water for domestic use, water or steam heated radiators 12, and a fuelheated boiler 1 and an auxiliary electrically heated boiler 13 each supplying both the hot water tank and the radiators, the water or steam supplied to the radiators, whether from the first or the second boiler, flows direct from the boiler or boilers without first giving up heat to the hot water tank 5. In the form shown, the water in the tank 5 is heated by a coil 4 supplied with hot water. Control valves 16, 17, 18, 19 are provided to cut out either boiler.
Patent GB-758413-A (GB)
Title: Improvements in or relating to process for cracking gas oils to gasoline
Filed: 1954-08-10
Abstract: <PICT:0758413/III/1> Heavy hydrocarbon oils such as gas oil are converted into gasoline by mixing the feed oil with a hydrogen-donor diluent comprising a hydrocarbon oil boiling above 500 DEG F. and containing partially hydrogenated condensed-ring aromatic components, subjecting the mixture to thermal cracking, fractionating the cracked products to separate gasoline and a heavy fraction boiling above 500 DEG F., and submitting the gasoline to catalytic reforming to increase its octane rating and to produce hydrogen this hydrogen is advantageously used to partially hydrogenate the polynuclear aromatic hydrocarbons in the heavy fraction; and the hydrogenated product is then employed as diluent for fresh feed oil.  In the Figure, gas oil (B.R. 650 DEG -100 DEG F.), is mixed in line with bottoms from fractionator 23 and with diluent from hydrogenator 25.  The volume ratio of diluent to feed is preferably 0.1 to 1.0.  The mixture is heated in coil 21 and then cracked in drum 22 at a temperature of 850 DEG -950 DEG F. and at a pressure of 300-2000 psig., the space velocity being 2 to 5 v/v/hr.  The cracked products are passed to fractionator 23, from which gas is withdrawn via line 7 while a C4-C5 light fraction is taken off through line 8.  Light naphtha (C5-200 DEG F.), is removed from the fractionator by line 27, and gasoline is taken off through line 9.  Heating oil (430 DEG -650 DEG ) is withdrawn through line 26; and the diluent cut (650 DEG -950 DEG F.) is taken off through line 10.  Part of the bottoms from the fractionator is purged via line 18, and the remainder is sent through line 3 to be mixed with the feed.  The gasoline, which may be desulphurized if necessary, is reformed in unit 24 which contains a platinum or molybdena catalyst at a temperature of 750 DEG -1150 DEG F., the pressure being 50 to 1000 psig.  Virgin naphtha can be introduced via line 19 to control the hydrogen production in unit 24. The reformed gasoline is removed by line 12 and is blended with the C5-200 DEG F. naphtha from the fractionator.  The hydrogen produced in unit 24 is passed via line 13 to hydrogenator 25.  Part of the diluent cut from the fractionator may be purged via line 16, and replaced by make-up tar introduced through line 17.  The diluent is then introduced into the hydrogenator, which contains molybdenum, nickel or tungsten sulphide as catalyst.  The hydrogenated diluent is passed through line 4 to be mixed with the feed.  If necessary, the feed may be deasphaltized before it is mixed with diluent.
Patent GB-895336-A (GB)
Title: Scale-reading device for measuring scales
IPC: G01D13/00
Filed: 1960-07-04
Abstract: 895,336. Scale reading devices. HENSOLDT & SOHNE, OPTISCHE WERKE A.G., M. July 4, 1960 [July 17, 1959; Feb. 11, 1960], No. 23222/60. Class 97(1). A scale reading device, wherein one scale graduation mark is projected into a reading window and means are provided for bring- ing the image thus formed into coincidence with an index mark(s) on said window, is characterized in that the projection means comprise a two-part objective of which the first part is arranged at a distance from the scale equal to its focal length and is displaceable by means of a screw relative to the second part and parallel to the measuring scale and in that the first part and the measuring screw are connected to scales appearing in the reading window. In the device shown in Figs. 3, 4, an image of a graduation line M on a scale 4 is formed by means of an objective 2, 3 and reflectors 8, 9, 13, 14 in the plane of a viewing window 15; the scale is illuminated by a lamp 10. Part 3 of the objective is fixed but part 2 is slidable in a guide 6 and is positioned with its focal point in the plane of scale 4 and its nodal point K in the plane of the guide. The movement of the line 2 is achieved against the force of spring 7 by rotation of screw 20 which causes a nut 21, a screw 20 of which is guided in a guide-way 23, to move, and by rotating a lever 28 about a pin 27 causes the block 6 supporting objective 2 to be moved also. A scale 17 fixed to the block 5 and a scale on a drum 24 attached to screw 20, are also moved by corresponding amounts and at least a part of each of these scales is visible in the window 15 to indicate scale intervals of for example millimetres and 1/100 millimetres. All three scales have corresponding reference marks on the window 15. The guideway 23 may be rotated in a plane perpendicular to the plane of the Figures to compensate for errors in the pitch of screw 23. A subsidiary prism may be positioned between the objective part 2 and the scale 4 to bend the light path. Moreover, part 2 of the objective together with prism 8 and mirror 9 may be positioned in an extension so that the objective 2 is positioned to the left of the housing 1 as shown in Fig. 3. In the embodiment showing this a series of rotatable rods are arranged between the nut 21 and the block 5 to effect movement thereof.
Patent GB-587327-A (GB)
Title: Improvements in or relating to heat control devices
IPC: H05B1/02
Filed: 1944-11-23
Abstract: 587,327. Thermostats. HEATING EQUIPMENT, Ltd., and COX, R. C. Nov. 23, 1944, No. 23347. [Class 64 (ii)] [Also in Groups XXIX and XXXVII] An electric switch 27, 28, Fig. 4, or valve (not shown) controlling the flow of a heating medium may be automatically moved to the cut-off position by a porcelain &c. collar 18 which is mounted on the end of a spring-pressed switch' operating rod 20 and has an annular groove 17 normally engaged by a downwardly projecting tooth 15 on the lower arm of a pivoted trip lever 11. The other arm of the lever 11 is curved at 13 to form a cam surface for engagement with the projecting end of a second spring- pressed rod 5 which is locked in a tubular casing 1, Fig. 1, of brass or other heat conducting material, by a plug 8 of solid fusible material disposed between spaced bushes 3, 4 within the casing 1 and engaging a recess 5a in said rod 5. The spring 26 of the rod 20 is stronger than that 6 of the rod 5, and the arrangement is such that, with the casing 1 arranged in close proximity to the heating element or immersed in the medium receiving heat therefrom, should the casing become heated beyond a predetermined degree the plug 8 will fuse to release the rod 5 and permit the spring 26 to overcome the spring 6 and the collar 18 to rotate the trip lever 11 and free itself from the latter, the contact blade 27 of the switch being pressed away from the blade 28 as a consequence. The rod 5 is immediately restored,to its initial position by the spring 6 so that it will be locked again in that position as soon as the fusible material solidifies, the switch operating rod 20 being moved to the right into engagement with the lever 11 to close the switch as soon as the fault giving rise to the over-heating has been remedied. In a modification, Fig. 5, a catch 36 is mounted on the end of the rod 5 to engage a cap 39 on the rod 20. When the plug 8 fuses the rod 20 moves to the left and pulls the rod 5 in the same direction, the catch 36 being opened by contact of splayed fingers 38 thereon with a conical lug 34 to release the rod 20 and permit collar 41 on the latter to open the switch 27, 28. A construction using an expansion catch 36, which is normally positively closed in engagement with the cap 39, is also described.
Patent GB-1309130-A (GB)
Title: Electric diaphragm switch
IPC: H01H13/702
Filed: 1970-05-14
Abstract: 1309130 Retractive switches; stencil switches; cathode ray display tubes INTERNATIONAL BUSINESS MACHINES CORP 14 May 1970 [26 May 1969] 23364/70 Addition to 1134507 Headings H1D and H1N An electric switch comprises a first elongated conductor 14 disposed on a substrate 10, a second elongated conductor 16 disposed on an elastomeric layer 12, each conductor having insulation 20A, 20B, and 21A, 21B, which is only slightly wider than the conductor, on respective first portions thereof, and having second portions uncovered by the insulation, the conductors being mutually transverse so that the second portions thereof form cooperating contacts which may be engaged by external pressure applied to the layer 12. The arrangement forms the basis of a matrix switch wherein a plurality of conductive lines of copper, for example, are bonded to the substrate 10 and layer 12 by deposition through a mask, for example, and may be of the order of only five mils. wide. Insulation is formed thereon by electrochemical flocculation or electrophoretic deposition, and the depth of insulation is such that the substrate 10 and diaphragm 12 are spaced thereby without contact between the crossing conductors; thus a separate insulating  spacer plate (as in parent Specification 1,134,507) is not necessary. The substrate 10  and layer 12 are preferably of transparent material such that the insulated conductors appear as a hairline grid. The switch is then substantially transparent and may be used in conjunction with a visual display (as in Fig. 3) so that the operator may indicate the position of an item of interest. The substrate 10 may be of flexible polyester, as is layer 12, or the substrate 10 may be rigid, for example, glass, and may comprise the faceplate or screen of the display system. For example, conductors 14 may be fixed directly to the screen 28. The switch may be employed independently of a display device, for example, the switch elements may be operated by an embossed structure such as raised letters on a credit card. Substrate 10 may be formed cylindrically to provide a switch which can be used in a rotary manner.
Patent GB-1036486-A (GB)
Title: Double-sided radial flow rotor in or for a centripetal turbine or centrifugal compressor
Inventor: LINDSEY WILLIAM HENRY
IPC: F01D5/04
Filed: 1964-06-05
Abstract: 1,036,486. Centrifugal compressors; turbines. BRISTOL SIDDELEY ENGINES Ltd. May 28, 1965 [June 5, 1964], No. 23377/64. Headings F1C and F1T. A rotor in or for a centrifugal compressor or centrifugal turbine has oppositely facing and staggered flow channels arranged to avoid flutter in the flow channel walls. The crosssectional area of each flow channel in planes perpendicular to the direction of flow is substantially constant along the length of the channel. When used in a centripetal turbine the direction of rotation of the rotor may be reversed by reversing the direction of the working fluid as by pivotally-mounted guide vanes or nozzles.
Patent GB-810806-A (GB)
Title: Packing case
IPC: B65D13/00
Filed: 1955-08-15
Abstract: 810,806. Collapsible boxes. SAXTON, S. A. Aug. 16, 1956 [Aug. 15, 1955], No. 23396/55. Class 18. A packing-case having peripheral parallel flanges on one pair of opposite walls to receive the adjacent edges of the second and third pairs of walls and in which the second pair has marginal parallel flanges to receive the intermediate edges of the third pair, is provided with screw-operated means for urging the edges of the second and third pairs of walls firmly against the inner surface of the first pair between its peripheral flanges. In one embodiment, top and bottom walls 10, 11 are provided peripherally with channels 15, 17, formed by angle members into which are received the edges of the second 12, 13 and third 14, 15 pairs of walls, the vertical edges of the walls 12 and 13 having marginal channels 18 receiving the edges of the walls 14 and 15. The screw-operated means each consist of a strap 21 carrying a stud 20, Fig. 3, and a threaded lug 22 ; the lugs 22 are received by slots 23 in the walls 12, 13. Bolt holes 24 are provided in the top 10 enabling bolts to engage the lugs 22. The studs 20 are received in keyhole slots 19 formed in the flanges 17 opposite mating slots in the walls 12, 13. Tightening of the bolts urges the edges of the walls 12-15 into abutment with the inner surface of the walls 10, 11. Lifting hooks 26 may be provided and the straps 21 may have a detachable hinged connection at the bottom instead of the studs and slots. In an alternative form, Fig. 8 (not shown) two sets of four straps encircle the packing case to form a reinforcing band ; the screw-operated means comprise threaded lugs at each end of two opposite straps and cooperating bolt-holes at each end of the other two straps, the whole being tightened by the bolts. The straps may be slidable in guides or secured to the ease by screws, and the side straps may have removable hinge pins instead of bolts at the bottom.
Patent GB-806375-A (GB)
Title: Improvements in or relating to dispensers for drinking straws
Inventor: CEPERO FILIBERTO GONZALEZ
IPC: A47F1/06
Filed: 1956-07-30
Abstract: 806,375. Dispenser for drinking straws. PORTA SORBEDORES YGIENIC S.A. July 30, 1956, No. 23444 /56. Class 18. A straw dispenser comprises a chamber 1 in which the straws are held substantially vertical the chamber floor 14 being conical so that straws move down towards a rotary agitator 17 having a bore 18 through which an element 41 rises to push the central straw above the others to enable it to be readily grasped. The agitator, having two radial fins, Fig. 3 (not shown) which stir the straws, is rotated by a cord 23 which encircles it. The cord is wound on drums 28, 35, the drum 35 being coaxial with a drum 34 which carries a wire 37 having on the end, the member 41. The drums 34, 35 are rotated by downwards pivoting of a lever 48 having a rack 47 rotating a pinion 43 on the common drum spindle. Movement of the lever 48 is produced by pressing down either of two buttons 53 55 on rods 52, 54, the rod 54 being connected to a lever 57 having a projection 59 bearing on the lever 48. When the drums 34, 35 rotate, the wire 37 is unreeled to rise through the bore 18 and project a straw, and the cord 23 is wound onto the drum 35, rotating the agitator 17. The drum 28 is spring biassed to return the drums 34, 35, wire 37 and members 53, 55 to their rest positions.
Patent GB-1431053-A (GB)
Title: Radiation detectors
IPC: H01J47/06
Filed: 1972-05-18
Abstract: 1431053 Detecting radiation NATIONAL RESEARCH DEVELOPMENT CORP 18 May 1973 [18 May 1972] 23463/72 Heading G1A A device for detecting ionizing radiation, e.g. soft or hard X-rays, comprises a plate-like conductor I having a plurality of electrodes 2 connected to its periphery for detecting currents and/or voltages induced by charges deposited on the surface of the conductor due to the ionizing radiation, amplifiers 3, 4 coupled to the electrodes, and means for analyzing the signals from the amplifiers to derive information concerning the position of the charge deposited on the conductor. As shown, the conductor is of lead oxide glass, the circuitry consisting of preamplifiers 3, main amplifiers 4, timing devices 5, either doubly differentiating filters followed by cross-over detectors or constant fraction timers, a pair of time-to-amplitude converters 6 and pulse stretchers 7, 8 connected to the X and Y plates of a CRT9. The detector shown in Fig.3 acts as a proportional counter and consists of a chamber 10 provided with a window 11 and containing a grid 14 separating a drift space 12 from a multiplying space 13, and the conductor 1. The drift space may be omitted for soft X-rays. The detector shown in Fig.4 acts as a channel multiplier and consists of the conductor 1, a channel photo-multiplier 15, a fluorescent layer 16 and a window of gold foil 17. Applications include measurement of soft X- rays in outer space, and thyroid radiography and dental X-ray applications.
Patent GB-615702-A (GB)
Title: Hygrometers
IPC: G01N19/10
Filed: 1946-08-07
Abstract: 615,702. Indicating-apparatus. BURDICK, C. L. Aug. 7, 1946, No. 33467. [Class 106 (iv)] [Also in Group XX] In a hygrometer a main humidity pointer is arranged to actuate maximum and minimum points on either side of the main pointer. The maximum and minimum pointers 12, 11 mounted on the central post 2 carry lugs engageable by the main pointer 8 which moves according to the response of the sensitive strip 10 to changes in humidity. The pointers 12, 11 carry balancing extensions 26, 27 which may be engaged for re-setting by spring-loaded pawls 28, 29 on arms 30, 31 urged apart by a spring 32.