baber/WOPTO huggingface dataset:
Patent GB-954144-A (GB)
Title: Channel plug for nuclear reactor
Inventor: COSTES DIDIER
IPC: G21C13/067
Filed: 1962-08-14
Abstract: 954,144. Pressure-resisting doors. COMMISSARIAT A L'ENERGIE ATOMIQUE. Aug. 14, 1962 [Aug. 16, 1961(2)], No. 31210/62. Heading F2P. [Also in Division G6] A reactor channel plug comprises a first latching means for co-operating with a loading machine, a second latching means which also connects the plug to the loader, and a third latching means which connects the plug to the channel, and a latch-operating means carried within the plug which moves between two extreme positions in which the second and third latching means are respectively locked and unlocked or vice versa. The first latching means 90, 36 is used to connect the latch-operating means 87 to the loading machine 18, and the latch operator 87 is so arranged that at no time are both the second latching means 86 and the third latching means 85 unlatched. The latches 84, 86 are fixedly mounted on rotatable shafts 92, as also are arms 91. The basic configuration of the latches 84, 86 is similar to the arms 91 as shown in Fig. 3. To remove the plug, the grapple head 68 and an associated housing tube 17 are fed axially into the outer end 13 of a fuel channel 2. The end of the tube 17 pushes forward a spring- urged lock actuating arm 95 to withdraw three locks 93 from the latch operator 87. Grapple hooks 36 on the grapple head engage an annular recess 90 (the first latching means), and the grapple head is then retracted somewhat while the housing tube 17 remains in place to hold the locks 93 in their retracted position. Thus the latch operator 87 is moved to the left, thereby inserting the latches 86 in a recess 17a in the housing tube 17, and then withdrawing the latches 84 from a groove 85 in the channel tube 13. Simultaneous withdrawal of the grapple head and housing tube remove the plug from the reactor channel. In a second embodiment (Fig. 5, not shown), the plug body is divided into two cylindrical portions, there being a spigot on one having part of the spigot length received in an axial bore within the second portion; an annular rubber sealing member is placed on the spigot between the adjacent end faces of the two plug halves, and coolant pressure within the channel presses the innermost half of the plug axially against the rubber member which is thereby forced radially outward into sealing contact with the tube wall. A modification of this latter embodiment comprises bolting the two halves of the plug together (Fig. 6, not shown), in order to achieve the axial compression of the sealing ring necessary to expand it into contact with the tube wall. This last arrangement is particularly suitable when the reactor is under vacuum, as during filling of the reactor with coolant, since sealing is achieved independently of reactor pressure.
Patent GB-1105468-A (GB)
Title: Improvements in and relating to bactericidal medicines
IPC: A61K31/00
Filed: 1966-07-12
Abstract: Pharmaceutical compositions having antibacterial activity comprise a carrier and dehydroabeityl guanidine or a salt thereof (especially with polyhydroxy mono- and dicarboxylic acids, e.g. gluconic, glucuronic, galacturonic and glucoheptonic acids).  They may be in conventional forms for oral, parenteral and topical use containing the usual diluents and excipients.
Patent GB-360626-A (GB)
Title: Improvements in the manufacture and production of artificial threads and the like
IPC: D01F2/30
Filed: 1930-10-18
Abstract: In the dry spinning of artificial threads and the like containing a wax such as paraffin or spermaceti, the wax is firstly homogenized with the cellulose carboxylic ester solution at a temperature above the melting point of the wax, and the homogenized solution maintained at that temperature until it passes through the spinning jet.  In an example an acetone solution of cellulose acetate containing powdered spermaceti is homogenized by repeatedly passing through a jacketed candle filter through which hot water is passed; it is then passed on to the jet by way of another candle filter at from 50-55 DEG  C.
Patent GB-314962-A (GB)
Abstract: 314,962. Akt.-Ges. Brown, Boveri, et Cie. July 5, 1928, [Convention date]. Vapour apparatus, arrangements of. - Direct current is converted to polyphase alternating current of variable frequency by a static transformer comprising a winding f having tapping points I - - VIII associated with pairs of valves ia, ie &c. connected as shown to the D.C. terminals, the valves being rendered conductive at appropriate intervals under the control of grid potentials derived from an auxiliary rectifier G and transformer system S1 - - S8 (of which only transformers S3, S7 are shown) fed by a polyphase generator D which also supplies current to an exciting winding T on the main transformer. Voltages for maintaining the grids negative with respect to their cathodes during the non-conducting periods of the valves are obtained from auxiliary machines M1, M2, the former being connected between artificial neutral points formed respectively on the winding f and on an auxiliary winding u having tapping points associated with the secondary windings of the transformers S1 - - S8. Starting is effected with the aid of a battery B serving to provide the required difference of potential between the windings u and f and causing the machine M1 to set the auxiliary group in motion. Under running conditions, the machines M1, M2, D are driven by a three-phase motor N fed from the A.C. side of the converter through a transformer W, frequency control of the output current being effected by varying the speed of the motor N. In an alternative arrangement in which control of the valves is effected by means of " grids " in the form of metal bands disposed externally of the valves, the machine M2 and the auxiliary winding u are dispensed with, resistances being connected between the secondary terminals of the transformers S1 - - S8.
Patent GB-209403-A (GB)
Title: An improved governing system for prime movers
IPC: G05D13/00
Filed: 1923-12-15
Abstract: 209,403. Metropolitan-Vickers Electrical Co., Ltd., (Assignees of kasley, A. T.). Jan. 3, 1923, [Convention date]. Fluid governors.-A speed-regulating governor for a turbine &c. comprises a cylinder 14 to which liquid is supplied at a constant pressure determined by a relief valve 20, by a pump 13 driven by the turbine, and a pipe 19. The cylinder is fitted with a fixed head 31 having a seating 30 to receive a valve 36 integral with a piston 42, and a piston 24 connected by a rod 25 loaded by a spring 29, to a lever 26 controlling the main valve. The pressure fluid passes through a chamber 32, orifices 47, and axial clearance 41 to the space 43 from which it is withdrawn by way of a pipe 50, passage 59, and valve 61 covering ports 60 in a centrifugal pressure-relieving device 15. A chamber 33 in the head 31 is connected by a pipe 73 with an exhaust main 100 which may supply oil to bearings 74. In operation, an increase of speed extends the spring 66 of the pressure-relieving device allowing an increased leakage through the ports 60, causing a downward movement of the piston 42, under the action of a spring 29, and opening the cylinder 23 to exhaust through the passage 34, whereby the rod 25 is moved upward by the spring 29 to close the main valve. The piston 42 then moves upward to cut off the exhaust and assume a new position of equilibrium. The running speed of the governor may be determined by varying the tension of the spring 66 by means of the screw 68, or compression of the spring 78 of the relief valve 76 of the leakage space behind the piston 42. For synchronizing from a distance the spring 78 may be adjusted by means of a fluid-pressure system wherein an actuating-diaphragm is subjected on the side to atmospheric and on the other to a variable sub-atmospheric pressure determined by an ejector and a variable leakage valve. For starting up, pressure fluid is supplied to the pipe 19 from a separate source, by way of a valve 106.
Patent GB-1363141-A (GB)
Title: Photoconductive element storing and dispensing magazine and  electrophotographic apparatus incorporating such a magazine
IPC: G03G15/00
Filed: 1971-07-06
Abstract: 1363141 Feeding sheets EASTMAN KODAK CO 6 July 1971 [6 July 1970] 31540/71 Heading B8R [Also in Division G2] A storing and dispensing magazine for sheets such as photo-conductive elements comprises a U-shaped housing the side walls of which have support means for engaging the edges of the sheets, and slots for allowing access of conveyer means for engaging and removing the sheets. As shown, the magazine has opposed side walls 36, 38 connected by an end wall 40. The elements 3 are supported in a series of grooves 46 on the inner faces of walls 36, 38. They are fed from the magazine by magnetic rollers 8 mounted on shafts 9. Each side wall has a pair of longitudinal slots 44 to accommodate the shafts 9 and so allow the rollers to move up inside the housing and engage the lowermost element. The magazine is used in conjunction with an electro-photographic copying apparatus to provide a continuous supply of photoconductive elements which are to be fed through the apparatus (Fig. 1, not shown). A box 48 fits over the magazine for storage purposes, and an outer box 50 may also be provided.
Patent GB-743830-A (GB)
Title: Improvements in or relating to ribbon drive means of typewriters and like machines
IPC: B41J33/00
Filed: 1953-11-13
Abstract: 743,830. Ink-ribbon mechanisms. JARDINE, Ltd., J., [trading as BYRON BUSINESS MACHINES], ELLISON, F. A., and PRIDMORE, F. M. March 24, 1954 [Nov. 13, 1953], No. 31542/53. Class 100 (4). An ink-ribbon 13 of a typewriter is fed from a supply spool 12 to a take-up spool 11 which is driven by a uni-directional ratchet drive 17, 18, rotated during letter-spacing by the movement of draw band 20, which in co-operation with a. spring drive 19, effects the traversing of the typewriter carriage 21. To rewind the supply spool the ratchet wheel 17 may be moved axially on its spindle 15 against a spring so that the wheel is disengaged from its pawl 18.
Patent GB-486958-A (GB)
Title: Improvements relating to washer boxes for coal and the like
IPC: B03B5/24
Filed: 1936-11-18
Abstract: 486,958. Washing granular materials. BLANTYRE ENGINEERING CO., Ltd., and KERR, W. Nov. 18, 1936, No. 31550. [Class 82 (ii)] A Baum-type washer-box for coal and the like has means for controlling the flow of shale through it comprising a section 3a of perforated plating substantially continuous with the perforated plating 3 of the box proper and surmounting a supplementary box 6, in which pulsations are produced similar to, but independent of, those in the box proper, the means inducing the pulsations in the box 6 being controlled by means operating according to the rise and fall of the shale level, so as to increase or diminish the rate of flow of shale over the section 3a as the level of shale on the plate 3 rises or falls. In the washer shown, a float 5 riding on the shale bed on the plate 3 controls by its rise and fall a regulating valve 7 in the pipe by which a pulsating pressure-air supply is led to the supplementary box 6, the amplitude of the pulsations in the box 6 being thereby increased or diminished as the shale level rises or falls respectively.
Patent GB-780378-A (GB)
Title: Radio frequency transformer
IPC: H01F19/06
Filed: 1955-11-04
Abstract: 780,378. Transformers. STANDARD TELEPHONES & CABLES, Ltd. Nov. 4, 1955 [Nov. 10, 1954], No. 31597/55. Class 38 (2). A wide band radio frequency transformer for coupling a balanced circuit to an unbalanced circuit or vice versa comprises a ferromagnetic core C and three layers of windings around the core, the centre layer ST constituting the unbalanced winding, the inner and outer layers AM, BN constituting between them two parts of the balanced winding, the two parts of the balanced winding being oppositely wound and two adjacent ends M, N of the two parts being connected together to form the balance point O of the balanced winding. The permittivity of the insulation J is higher than the permittivity of the insulation K. The windings may be of bare or insulated wire, stranded wire or flat strip. The windings may be sub-divided into sections, the sections of the centre layer being, if desired, connected in parallel whilst the sections of the inner and outer layers may be transposed so as to have sections which are in either layer.
Patent GB-171304-A (GB)
Title: Improvements in safety razors
IPC: B26B21/14
Filed: 1920-11-08
Abstract: 171,304. Fischer, J. W. Nov. 8, 1920. Razors, safety, in which the blade is clamped to a base by a clamping-plate operated by the handle. The base 12 is provided with a longitudinal abutment 14 projecting normally to the surface thereof, and the forward movement of the blade on the base is determined by a longitudinal' abutment 22 projecting normally to the plane thereof and engaging the abutment 14. The abutment 22 and a corresponding one 21 on the other side of the blade are formed by a backing 20 clamped to the rear part of the blade, the abutments 21, 22 extending to different distances on the two surfaces, so that by reversing the blade the cut may be varied. The clamping-plate 30, pivoted at 31 to the base, has a cam portion 33 bearing against the back of the blade to force the abutment 21 or 22 against the abutment 14 as the handle 38 is screwed on to a pin 35 projecting from the plate 30. In a modification the base projects on both sides of the handle so that a pair of blades, giving different cuts, may be clamped thereon by a double clamping-plate.
Patent GB-1472214-A (GB)
Title: Adjustable die closing unit for injection moulding machine
IPC: B29C45/17
Filed: 1974-07-17
Abstract: 1472214 Adjusting injection moulding machines K HEHL 17 July 1974 [20 July 1973] 31599/74 Heading B5A In an injection moulding machine wherein the tool platen 3 is moved relative to the platen 7 and a thrust stock 6 by an hydraulic cylinder 12 and linkage 9 and 10 along guide columns 8, the spacing between the platens is adjusted, e.g. by worm-and-nut gearing 14, 15 which can effectively shorten the columns 8 after clamps 2<SP>1</SP> and 6<SP>1</SP> have been released. The nut 15 is housed in a recess 29, and the nut together with a lock-ring 21 have the same axial length as the recess, so that the mechanism can be locked after adjustment by a clamping flange 19 which closes the recess. The arrangement can be applied to machines having two or four guide columns.
Patent GB-446679-A (GB)
Title: Improvements in or relating to colour photography
IPC: G03C7/04
Filed: 1934-11-03
Abstract: 446,679. Colour photography. THREADGOLD, S. D., 23, Roden Street, Ilford, Essex. Nov. 3, 1934, No. 31624. [Class 98 (ii)] Records on regular pattern multicolour screen material are printed by contact onto similar material by means of a beam of diffused light from a source at which the cross-section of the beam is adjusted, according to the distance of the source from the screen associated with the original, the size of the screen elements, and the distance apart of the original and copy screens, to produce substantially uniform illumination of the copy screen. In Fig. 6a, if u is the distance on either side of an element of the copy screen over which the light is to be spread and d is the separation of the original and copy screens, the angle # subtended by the source at any point of the original screen is given by the formula # = 2 tan -<1u>/d. In Fig. 3, light passing through the aperture 5 in a mask and through the elements of one colour, e.g. red, in the original screen 6 falls on the copy screen 7 and is spread thereover, light passing the elements of each other colour being spread in a similar manner. In the case of a three colour screen comprising red stripes and stripes formed of alternate blue and green squares, the dimensions of the light source, e.g. an incandescent plate or a grid filament, are calculated to give the desired spread in each direction for the red lines, the spread of the green and blue elements being then slightly too great. Specifications 417,860 and 437,888 are referred to.
Patent GB-1104833-A (GB)
Title: Improvements in screw-threaded fasteners
IPC: F16B37/04
Filed: 1966-07-14
Abstract: 1,104,833. Anchoring nuts. SHUR-LOK CORPORATION. 14 July, 1966 [9 Aug., 1965], No. 31626/66. Heading F2H. A barrel nut is anchored with play in a part cylindrical cradle by projections 19 which locate in recesses 31 in ears 26 extending from the cradle. The ears have lead-in surfaces 28 and are sufficiently resilient to spread apart as the nut is forced into the cradle. The lead-in surfaces (37), Fig. 4, not shown, may be on the nut. The projections (219), Fig. 5, not shown, may be cylindrical and fit in cylindrical recesses in the ears.
Patent GB-308631-A (GB)
Title: Improvements in an apparatus for discharging and placing concrete and the like pneumatically
IPC: B28C7/16
Filed: 1927-11-24
Abstract: 308,631. Dehn. F. B., (Ransome Concrete Machinery Co.). Nov. 24, 1927. Direct air-pressure apparatus, non-automatic. - Apparatus for discharging concrete and the like has a mechanical conveyer acting in conjunction with pressure fluid and the pressure fluid acts on the concrete, before, during and after its passage past the conveyer. The concrete is fed to the chamber 1 through an opening 4 which can be sealed by a flap 6 operated by lever gear 10, 11. The chamber is provided with a discharge opening 23 to which leads a mechanical conveyer 20 operated by means of a motor 30. An air pressure tube 25 leads into one end of the discharge opening 23 and a discharge tube 26 at the opposite end. After the material is supplied to the chamber the flap is closed and the air pressure turned on; the conveyer is then operated so that the material is worked towards the discharge opening 23 whence it is blown through the discharge pipe; the pressure in the chamber 1 being greater at each discharge than the pressure in the tube 25 prevents the material being blown back into the chamber. A supplementary air pressure supply 15 may be fixed to the top portion of the chamber.
Patent GB-244492-A (GB)
Title: An improved process for spinning artificial silk from viscose solutions
IPC: D01F2/04
Filed: 1925-12-15
Abstract: In the manufacture of artificial silk from ammoniacal copper oxide cellulose solutions, coagulation of the filaments is effected by water at a low temperature to such an extent that solidification of the filaments is incomplete, thereafter the filaments are led out of the spinning-apparatus, and treated, as for instance in a channel or bath, with water at a higher temperature in order to complete the solidification process.  By operating in this manner, the formation of deposits on the walls of the spinning-apparatus likely to cause rupture of the filaments, is obviated.  In an example, the first bath has a temperature of 20 DEG  C., and the second bath of 50 DEG  C. In the second bath, alkalies or salts may be added.  The process is stated to be applicable to the spinning of solutions of cellulose esters or ethers, such as acetylcellulose or ethyl cellulose.
Patent GB-534098-A (GB)
Title: Improvements in or relating to the production of sponge rubber articles
Filed: 1939-12-07
Abstract: 534,098. Sponge rubber articles. INTERNATIONAL LATEX PROCESSES, Ltd., and KENIDRICK, H. Dec. 7, 1939, No. 31691. [Class 70] To build up a sponge rubber article by adding a frothed aqueous rubber dispersion to an existing vulcanized latex rubber sponge shape, the surface skin is removed from those surfaces of the shape which are not intended to constitute outer surfaces of the finished article, it is placed in a mould with the untreated surfaces in contact with the walls of the mould, and the void spaces of the mould are filled with the frothed dispersion, which is thereupon coagulated, vulcanized, washed and dried. Specifications 332,525, 332,526, [both in Class 70], and 431,410 are referred to.
Patent GB-1381873-A (GB)
Title: Method of and an apparatus for testing optical devices or systems
IPC: G01M11/02
Filed: 1971-07-06
Abstract: 1381873 Testing lenses photo-electrically SIRA INSTITUTE 27 July 1972 [6 July 1971 24 Aug 1971] 31774/71 and 39727/71 Heading G1A To test an optical device or component 4 an image (of an object 30) formed by the component is scanned repetitively, e.g. by a rotating part-radial grating 10, to provide a modulated output from a photo-cell 12 having an A.C. and a D.C. component whose magnitudes are compared to give an indication of the modulation transfer function (MTF), of the component.  Light from a slit or pinhole 30 is collimated by a lens or mirror 3. The output from photo-cell 12 is amplified at 25 and separated into A.C. and D.C. components by band-pass and low-pass filters 28 and 300 respectively. The D.C. output from 300 is compared in comparator 26 with a reference level, and the comparator output is fed-back to maintain the gain of amplifier 25 at unity. In this way the output of demodulator 29 is constantly normalized and represents the MTF of the component. In another embodiment, Figs. 6, 8 (not shown) the comparator output is fed-back to control the operating voltage of the photo-cell dynodes. A sample-and-hold circuit (160) may be provided in the feedback circuit so that the D.C. level is not monitored continuously, Fig. 7 (not shown). To make measurements at more than one spatial frequency the axis X-X of the grating 10 is rotated about the axis Y-Y of the optical system. This may be done in discrete steps or continuously, in which case the output from the demodulator 26 is smoothed by a filter (192) to produce an average MTF for the component which is fed to a meter (or lamp, if it is above a pre-set level).  A way of measuring at different azimuthal angles is to divide the light from lens 7 into two beams which are directed to radially opposite portions of the grating 10, and are then supplied to different photo-cells by light guides, Figs. 9-11 (not shown). Alternatively the divided beams may be fed to separate gratings, Fig. 12, (not shown). To find a maximum MTF value for the component 4 the assembly G which may include a diffuser is driven parallel to the optical axis.
Patent GB-1458270-A (GB)
Title: Apparatus for pyrometallurgical treatment of metal-bearing slag
IPC: C22B34/34
Filed: 1976-07-30
Abstract: 1458270 Mixing apparatus KENNECOTT COPPER CORP 28 Feb 1974 [5 March 1973] 31778/76 Divided out of 1458269 Heading B1C Apparatus for treating metal bearing slag comprises a reactor in which the slag is mixed with a molten metal sulphide matter or with carbonaceous material, the reactor including a rotary stirrer with one or more metallic blades 244 each blade being provided with a passageway for a cooling fluid and a shaft 222 which includes delivery and return passages for the fluid, means for rotating the .stirrer and a fluid delivery assembly 246 for delivering the cooling fluid to and from the stirrer. The shaft 222 comprises an outer cylindrical steel member 260 with a lining sleeve 257 of copper and an inner tubular member 262 of copper, the annular space providing for flow of coolant (water) and the tube 262 for return flow. The blades are of copper and in use collect a solid protective coating of the slag material. The reactor may be tilted for discharge of materials through a pour spout 228.
Patent GB-161510-A (GB)
Title: Improvements in gun lubrication
IPC: F41A29/04
Filed: 1920-11-10
Abstract: 161,510. Thompson, J. T., (Assignee of Cummings, H. H.). June 9, 1920, [Convention date]. Lubricating. - Consists in lubricating cartridges while they are in the magazine by a jet or spray of lubricant operated by the usual manipulation of the breech action. The spraying - device comprises a pump plunger 32 operated by a lever 35 and slide 46. The pump forces lubricant from a reservoir 21 through a valve 39, passage 37 and pipe 42 to nozzles 44, Fig. 4, in the front wall of the magazine. The working stroke of the pump is produced by a spring 53 acting rearwardly on the slide 46, which is first pushed forwards and then released as the breech is being closed.