baber/WOPTO huggingface dataset:
Patent GB-673796-A (GB)
Title: Improvements in and relating to vortex-flow type pumps
IPC: F04D5/00
Filed: 1950-11-20
Abstract: 673,796. Centrifugal pumps. BRITISH THOMSON-HOUSTON CO., Ltd. Nov. 20, 1950 [Nov. 25, 1949], No. 28309/50. Class 110(i) In a circumferential-flow pump in which the discharge pressure bears a substantially fixed relation to rotational speed, the tendency for the pressure to increase as the viscosity of the pumped liquid decreases is compensated for by a byepass passage of small cross-sectional area and large wall area, whereby the amount of liquid bled off increases as the viscosity decreases. The pump described in Specification 673,780 is provided with a byepass passage 26b which is connected by ports 26a and 26c to the discharge and inlet ends respectively of the arcuate pumping chamber 32b. Alternatively, the recessed side wall 27a is continued radially inwardly, as at 32d, beyond the innermost portions of the impeller blades 5, or is extended axially outward. Either one of these two arrangements is used at both sides of the impeller. Slots extending axially through the impeller rim may replace the staggered blades 58. Specification 663,935 also is referred to.
Patent GB-831302-A (GB)
Title: Reaction products of polymers with polyisocyanates or polyisothiocyanates
Inventor: JONES FREDERICK ARTHUR
IPC: C08G18/08
Filed: 1955-10-05
Abstract: A composition for the preparation of synthetic elastomers comprises a reaction product of a polyether, polyester or polyesteramide with a polyisocyanate or polyisothiocyanate in admixture with a nitro derivative of an aromatic sulphenyl halide.  The halide increases the period for which the reaction products retain their ability to mill, their tackiness and their good moulding characteristics.  Preferred compounds are the nitrobenzenesulphenyl halides, such as o-nitrobenzenesulphenyl chloride and bromide and p-nitrobenzene sulphenyl chloride.  The amount is preferably 0.02 to 0.5% based on the combined weight of the polymer and polyisocyanate or polyisothiocyanate.  Mixtures with cyclic or acylic acid chlorides and the acid esters of phosphorus-containing acids and/or the oxyacids of phosphorus described in Specifications 790,543, 791,956 and 831,301 may also be used.  The reaction products to which the sulphenyl halide is added may be further reacted with polyfunctional compounds such as water, polyvalent alcohols, polyvalent amines or amino-alcohols. The compositions (if prepared from polyester and diisocyanate in the ratio 1:1.01 up to 1:1.10) may be milled with additional diisocyanate (to bring the ratio between 1:1.4 and 1:1.6) and with carbon black, silica or other reinforcing material. Neutralization of the sulphenyl halide before moulding the mixture is not essential, but can, if desired, be effected with a base such as diphenylamine.  In examples a reaction product of a polyethylene glycol adipate with naphthalene - 1:5 - diisocyanate is mixed at 120-130 DEG  C. with (1) o-nitrobenzenesulphenyl chloride, and (2) p-nitrobenzenesulphenyl chloride and the ability of the mixture to be milled and moulded after storage at 125 DEG  C. for various periods is determined.
Patent GB-284796-A (GB)
Title: Improvements in or relating to type holders for embossing machines
IPC: B41B1/18
Filed: 1926-11-12
Abstract: 284,796. Armstrong, H. W. Nov. 12, 1926. Embossing-machines; embossing-surfaces. - A type-holder for cutter-crush embossing-machines comprises a frame on which flexible type-carrying strips 13 are detachably and adjustably mounted, the type 15 having grooved edges with which the strips 13 engage so as to support the type. Bars 6 form the side and end members of the frame, the end members being of less thickness than the side members so as to allow the frame to slide in grooves 7 in the bed of the press. Graduated plates 12 are secured to the upper edges of the bars 6, and extend beyond the edges of the frame, the strips 13 being formed with turnedin ends 14 which hook over the entending parts of the plates. Clips 16 are provided for holding the type in place on the strips 13. The strips 13 may be shaped so as to hold the type 15 on straight or curved lines, and if the type is to be arranged diagonally two sets of strips 13 are employed and each set fixed to one pair of sides of the frame. Clips 11 are provided to hold the card to be embossed, and are pivoted on a rod 9 fixed to the extremities of the sides of the frame. In operation, the card is placed in the clips 11 and the type 15 arranged in the frame 6, the coloured paper being inserted between the card and the type by pivoting the frame about the rod 9, and the whole is then inserted in the machine.
Patent GB-519785-A (GB)
Title: Improvements in and relating to the production of titanium dioxide pigments
IPC: C01G23/047
Filed: 1938-09-30
Abstract: 519,785. Titanium dioxide pigments. DU PONT DE NEMOURS.& CO., E. I. Sept. 30, 1938, No. 28518. Convention date, Oct. 2, 1937. [Class 1 (iii)] In the production of titanium pigments, hydrolytically precipitated titanium dioxide is digested in sulphuric acid of a concentration of between 80 and 300 grms. per litre so that a small proportion of the titanium dioxide is dissolved together with adsorbed or absorbed impurities, particularly chromium and vanadium compounds, the titanium dioxide then removed from the acid and finally calcined. The treatment improves the colour of the calcined pigment. Digestion may take place in the presence of a reducing agent such as a trivalent titanium solution or powdered zinc, particularly if ferric iron is present; the precipitate may be washed prior to the digestion, which may be effected at boiling point for an hour or more. Specification 346,116 is referred to. The Specification, as open to inspection under Sect. 91 comprises also the use, for the digestion, of sulphuric acid of concentrations down to 50 grms. per litre. This subject-matter does not appear in the Specification as accepted.
Patent GB-427115-A (GB)
Title: Improvements in or relating to strainers for use in straining liquids
IPC: B01D29/01
Filed: 1933-10-16
Abstract: 427,115. Strainers; hook-fastenings. HOSIER, A. J., Wexcombe, Marlborough, Wiltshire. Oct. 16, 1933, No. 28620. [Class 46] [See also Group XXV] In a strainer for liquids of the kind in which the straining material is positioned within a casing formed in two parts which clamp the material between them at an acute angle to the direction of flow of the liquid so that the separated matter tends to fall away from the material into the bottom of the casing, one of the two parts of the casing is extended to enter the other part, so that the straining material is not only clamped, but is also made taut by the extension. As shown, the casing comprises two semi-spherical shells 3, 4 provided respectively with inlet and outlet pipes 1, 2, and with flanges 5, 6 arranged at an acute angle to the axis of the pipes, the shell 4 being provided with an extension 7 adapted to enter the mouth of the shell 3 and to tauten the straining material 9, e.g. cloth, which is clamped between the flanges. A washer or washers 8 may be interposed between the flanges. The shells 3, 4 are secured together by hooks 12 pivotally mounted on the shell 4 and adapted to engage pins or lugs 11 on the shell 3. The hooks are pivoted on the hubs of arms 13, which hubs are eccentrically pivoted on pins 14, so that, when the hooks are engaged with the pins, the shells may be forced together by moving the arms 13 so that the eccentricity of the hubs is directed away from the pins 11.
Patent GB-1246569-A (GB)
Title: Method of preventing deterioration of a wafer of material
Inventor: UNGER WERNER
IPC: A23K3/02
Filed: 1969-06-06
Abstract: 1,246,569. Fodder wafers. WISSENSCHAFTLICH-TECHNISCHES ZENTRUM FUR LANDTECHNIK SCHLIEBEN. 6 June, 1969, No. 28819/69. Heading A2B. Deterioration of wafers of fodder material is prevented in a process wherein the fodder material is formed into a skein by a winding or twisting method, a chemical having fungistatic or bacteriostatic action being injected or sprayed predominantly on to the material forming the inner part of the wafer during or prior to the formation of the skein from which the wafer is formed. For this purpose injection or spray nozzles may be provided on the machine.
Patent GB-1365374-A (GB)
Title: Power supply module
Inventor: MCCANN J A
IPC: H01L23/36
Filed: 1971-07-27
Abstract: 1365374 Semi-conductor bridge rectifiers GENERAL ELECTRIC CO 27 July 1971 [27 July 1970] 28824/71 Heading H1K A power supply module comprises a thermally conductive substrate with an electrically insulating surface on which are disposed a pair of spaced input (or output) contacts, semiconductor elements located on said contacts and forming a bridge circuit with identical arms between them and a spaced overlying pair of output (or input) contacts, a semi-conductor means including at least one PN junction providing between a pair of contacts electrical characteristics different from those of the bridge arms, and a direct electrical connection between only one of said pair of contacts and one of the output contacts of the bridge. In one embodiment (Fig. 3) an insulating but thermally conductive substrate, e.g. of beryllia, alumina, or aluminium or boron nitride, carries a pattern of conductors comprising linear strips 314, 306, 308 and strips 310, 312 with interdigitated portions. Semi-conductor block 400, shown in detail in Fig. 2, which comprises a pair of PN diodes constituting said semi-conductor means in addition to those forming the bridge arms, is mounted with P zone 406 on output conductor 2, N+ zones 410, 404 on the other output conductor 310 and with arms 328, 332 associated with input conductors 306, 308 overlying P and N+ regions 418A, 420A and 418B, 420B respectively. A discrete PNPN thyristor chip mounted on conductor 310 is connected in reverse parallel with the additional pair of diodes via conductors 318, 320 which is also connected to switch output contact 314 by conductive strip 324. The junctions in the block and chip are protected by a coating of glass, oxide, nitride or silicone or epoxy resin and the conductors provided with ox bows 322, 330, 334 to receive thermal stresses. In an alternative form the pair of diodes is combined by terminating the Y axis groove at the Z, axes. In a further modification, utilizing a copper or aluminium substrate with a coating of any of the above mentioned insulators or specified resins, block 400 comprises only the bridge diodes, the thyristor and additional diode being integrated into a single unit (Fig. 8, not shown). In all cases the intermediate N layer in the diodes, which may alternatively be discrete elements, may be replaced by an intrinsic layer or omitted, and the block mounted in an inverted position so that the input rather than the output conductors provide the thermal connection to the substrate. Furthermore the interconnection of the elements may be modified so that the auxiliary diode(s) shunt the load, or are connected in series with the thyristor.
Patent GB-965368-A (GB)
Title: Improvements in or relating to dustbins or other similar portable refuse containers
Inventor: WOODWARD BASIL
IPC: B65F1/12
Filed: 1962-07-27
Abstract: 965,368. Dust bins. DENNIS BROS Ltd. July 22, 1963 [July 27, 1962], No. 28884/62. Heading A4A. A noiseless dust bin comprises an opentopped container 1 of rubber or plastic having its greatest diameter near the top and a removable reinforcing collar 4 of more rigid plastic, steel &c., the collar being placed freely around the base of the container and slid upwards to wedge near the top of the container. The mouth of the container may have a peripheral rim 2 to abut the top of the collar and a rib 3 engaging a hollow rib 5 on the collar and temporarily distorted during mounting of the collar. The collar may be permanently secured by rivets, bolts &c. and a lifting handle 6, and a bracket 7, for a hinged metal, rubber or plastic lid, are integral with or are secured to the collar or to the bin wall. A reinforcement 10 providing additional support for the bracket partially embraces the bin wall. The rim 2 provides noiseless engagement with a metal lid. In a modification the rib 3 is replaced by a depression engaged by a projection from the collar.
Patent GB-339389-A (GB)
Title: Differential gear for driving spindles of wireless apparatus independently from the direction of rotation of the control knob
IPC: H03J1/08
Filed: 1929-09-24
Abstract: 339,389. Defrance, H. July 12, 1929, [Convention date]. No Patent granted (Sealing fee not paid). Wireless tuning-apparatus, adjustment devices for.-A device for radio tuning devices comprises differential bevel gearing operated in either direction in combination with abutments-permit-- ting movement in one direction only of the driven member for tuning purposes, return movement of the control being effected by a spring. As shown, bevel gears 2, 4, 6, 7 are mounted in a loose cage 3, the driven spindle 8 turning always in the direction of the arrow 15. In one direction of rotation of the driving-spindle 1, the shaft 5 abuts against a fixed stop 11, and in the other direction, the gear, cage and movable stop 9 drive solidly with the spindle 8. A spring 12 takes up backlash and returns the parts on movement of the control knob to its zero position. A wavelength change-over switch is actuated by the tuning control.
Patent GB-1319488-A (GB)
Title: Apparatus for fabricating a block
IPC: B30B11/02
Filed: 1970-06-15
Abstract: 1319488 Moulding pulveralent material VON ROLL AG 15 June 1970 [16 June 1969] 28973/70 Heading B5A In a method of moulding a block from granular material a pre-determined quantity of the material is supplied to a container 2 which is then aligned by a piston cylinder device 7 with a housing 13 after opening a cover 12. A trap-door type floor 3 of the container is then removed by a device 6 and the material is received on a plate 56 resiliently supported above a plate 53 and carrying vibrators 57. The cover is closed after the return of the container to bring an upper plate 46 into contact with the material. Such plate being resiliently supported from a support plate 43 and carrying vibrators 47. The moulding compartment is then evacuated by a vacuum pump, not shown, and the material subjected to compression e.g. by operation of the vibrators and/or by movement of the plates 46, 56 by piston and cylinders 39, 50. After such compaction the cover is opened and the compressed block raised from the housing 13 on the plate 56 by the device 50. In the meantime the container 2 is re-filled and again brought into alignment with the housing and at the same time pushing the block on to a transport means 9 by a buffer 8. A bottom member 14 is lowered from the housing by piston and cylinder devices 60, 61 to allow the cleaning of its sealing surfaces by an air nozzle 77; a similar nozzle cleans the sealing surfaces of the cover.
Patent GB-1378940-A (GB)
Title: Phosphorus-containing s-triazine derivatives their manufacture and use in protecting organic materials
IPC: A61K8/00
Filed: 1972-06-21
Abstract: 1378940 Phosphorus-containing triazine derivatives CIBA-GEIGY AG 21 June 1972 [23 June 1971] 29015/72 Heading C2P [Also in Divisions C3 Dl and G2] The invention comprises compounds of Formula I  where X and Y are each unsubstituted or substituted alkyl, an unsubstituted or substituted monocyclic or bicyclic aromatic or heterocyclic radical, alkenyl, cycloalkyl or aralkyl, and are bonded directly or via an -O-, -S- or -NH- link to the triazine ring, A is hydrocarbyl, D and D<SP>1</SP> either are both hydrogen, cycloalkyl, alkenyl or unsubstituted or substituted alkyl or phenyl, or one of D and D<SP>1</SP> is hydrogen and the other is cycloalkyl, alkenyl or unsubstituted or substituted alkyl or phenyl, R is hydrogen or a group of Formula A Z is halogen, RO-, alkyl, alkoxy, phenalkyl or phenyl and p is 0, 1 or 2, and when p is 2 the substituents Z may be the same or different; and salts of the compounds of Formula I in which at least one of D and D<SP>1</SP> is hydrogen and alcoholates of the compounds of Formula I which have at least one -OH present. The compounds of Formula I may be prepared (a) by reacting a compound of Formula 10 with a compound of Formula 11 or a sulphuric acid mono- or diester thereof, or by reacting a sulphuric acid ester of the compound of Formula 10 with the compound of Formula 11, (b) by reacting a compound of Formula 10 with a compound of Formula 12  (c) by reacting a compound of Formula 10 with a compound of Formula 18 where E<SP>11</SP> is a halogen atom or -SO 3 E<SP>1</SP> where E<SP>1</SP> is optionally substituted alkyl or aryl or (d) by reacting a compound of Formula 10 in which one or both OH groups is replaced by E<SP>11</SP> with a compound of Formula 11. Compounds of Formula I in which D and D<SP>1</SP> are hydrogen may be prepared by hydrolysing mono- or diesters of Formula I, and esters of Formula I may be prepared by esterifying the free acids or by transesterification. The compounds of Formula I may be used to protect organic materials from the effects of ultraviolet radiation.
Patent GB-1471687-A (GB)
Title: Telescopic column arrangement
IPC: F16F9/00
Filed: 1974-07-01
Abstract: 1471687 Adjustable length fluid struts STABILUS GmbH 1 July 1974 [5 July 1973] 29088/74 Addition to 1420164 Heading F2S In the telescopic column of the parent Patent, the mounting device comprises a single forked body 2 introduced into the interior of the first telescopic portion 10, 23, 7, 9 through openings 12a, 12b, the end 4 first introduced being anchored against the diametrically opposed part of said telescopic portion by a bolt 14 passed through openings 13a, 13b and threaded into a bore 5 in the end 3 of body 2. The body 2 pivotally mounts the release lever 1 which depresses a value body 15 of a gas spring to allow communication between the spaces above and below the piston 34 secured to the fixed telescopic portion 18. While valve 15 is open, the parts 23, 10, 9, 7 are automatically raised by the gas pressure above piston 34, or they can be manually-lowered against this gas pressure.
Patent GB-631880-A (GB)
Title: Improvements in fluid operated disc brakes
IPC: F16D55/32
Filed: 1946-10-01
Abstract: 631,880. Fluid-pressure-actuated disc brakes. DUNLOP RUBBER CO., Ltd., and BUTLER, H. J. Oct. 1, 1946, No. 29190. [Class 103 (i)] A fluid-pressure actuated disc brake adapted for dual control comprises a brake cylinder, two pistons therein, and two systems of fluid supply, the ports to the cylinder for the fluid supply being so placed that the pistons tend to move in the same direction or in opposite directions according to the systems of fluid supply in use. In one form Fig. 1, axially-movable inner and outer annular discs 5 and 7, formed with teeth 6 and 8 engaging corresponding teeth 2 and 4 on the wheel hub and rim, are arranged to be gripped. between friction elements 33 and 34 mounted on a sleeve 26 secured to a fixed plate 9 formed with a cylinder 10. Two pistons 15 and 17 having abutment faces 19 are slidable in the cylinder and on a piston-rod 21 which has a head 20 located in a bore in the piston 15 and passes through the sleeve 26. The end of the cylinder is closed by a resilient cap 11, secured by a band clip 13, and this cap engages the piston 15 and head 20 so as to act as a return spring when the brake is released. The end of the rod is screw-threaded for the reception of an adjusting nut 30 which engages a backing plate 32 now rotatably mounted on the sleeve 26 and is arranged to be turned automatically to compensate for wear by a spiral spring 37 as described in Specification 631,877. Fluid is admitted either to the righthand side of piston 17 or to the space between the pistons through a passage 36 or 35. In a modification, Fig. 2 (not shown), the piston 17 abuts against a shoulder 38 formed on the piston-rod. In a second form, Fig. 3, the piston 17 abuts against the head 20 of a pushrod 21 encircled by a return spring 40, and fluid is admitted either to the left-hand side of piston 15 through a passage 41 or to the space between the pistons through a passage 35. A single cylinder and associated parts may be employed, or several cylinders spaced at equal intervals around the discs. In the latter case the plate 9 is formed as a spider. According to the Provisional Specification, the arrangement may be such that braking pressure is applied directly to the friction elements adjacent the cylinders and through the pistonrod to the elements remote from the cylinders. Specification 625,726 is referred to in the Complete Specification and Specification 625,739 in the Provisional Specification.
Patent GB-453384-A (GB)
Title: Improvements in or relating to staple driving machines
IPC: B25C5/16
Filed: 1935-10-23
Abstract: 453,384. Stapling. POLZER, F., South Norwalk, Connecticut, U.S.A. Oct. 23, 1935, No. 29271. Convention date, May 18. [Class 89 (iii)] A machine for stapling or tacking, which may be of the desk or pliers type, and comprises a magazine along which a staple strip is fed to a driver passage in which a vertical driver reciprocates, is provided with a full stroke mechanism, and with a yieldable front wall for the driver passage so that staples of different gauge wire may be used. In the desk tool shown, the body 40 is pivoted at 22 to the base 21 and is raised by a spring-pressed pin 29. An anvil 25 is laterally adjustable to bring different clenching dies into operative position, and is locked by a spring-pressed ball 26. The magazine comprises a U-shaped bar 41 along which the staple strip 43 is fed by a pusher 44 detachably connected to a spring 47 by a finger piece 46. The driver plunger 31, to which the driver 32 is secured by a stud 33, reciprocates between limits defined by shoulders. 34, 35 and a stop 36, and is raised by a spring 38. The front wall of the driver passage is defined by a resilient member 50, Fig. 13, which is retained by a pin 51 and stop 55 in a block 53 which is held removably at the front of the magazine by screws 66 and a cross-piece 64 co-operating with a lug 65 on the bar 41. Normally, the rear wall of the member 50 defines a driver passage equal in width to the thickness of the thinnest staple to be employed. If a thicker staple is used, the member 50 yields to accommodate its thickness. The front upper edge of the bar 41 is bevelled to allow a misaligned staple to enter the passage, and curved recesses 58 are provided in the member 50 to receive and straighten the legs of a staple which is tilted forwardly. The driver is provided with a lug 61 which moves in a slot 62 in the member 50. This lug acts, when the driver is operated, to expel any staple which may have become jammed between the driver and the member 50. The full stroke mechanism comprises a recess 75 in the driver, a catch lever 72 pressed by a spring 76, and a bar 67 mounted on the driver by a pin-and-slot connection 68, 69 and provided with a groove or shoulder 70. These parts are so arranged that the bar 67 moves down with the driver and masks the recess 75 if the driver makes a full stroke. In case of an incomplete stroke, the recess 75 is exposed, and is entered by the nose 74 of the catch lever 72, so that the driver is locked with its lower end in front of the staple bar 41. If the stroke is now completed, the bar 67 moves down to mask the recess 75 before the driver makes its return stroke. Specifications 453,383 and 453,385 are referred to.