baber/WOPTO huggingface dataset:
Patent GB-1489377-A (GB)
Title: Controlling x-ray sources
IPC: H05G1/46
Filed: 1974-10-09
Abstract: 1489377 X-ray exposure control PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 9 Oct 1974 [12 Oct 1973] 43725/74 Heading G1A The voltage and current of an x-ray tube are controlled to give predetermined dose or exposure density as a result of an exposure of predetermined length by (a) Measuring the dose with the tube operating at V test , I test  and using the exposure meter to calculate the current (I w1 ) needed at voltage V test  to give the required dose. (b) mechanically or electrically forming a function (2) which passes through V test , I w1  and which represents voltage and current values for the required dose, (c) mechanically or electrically forming a function (1) which defines the operating region of the tube at the said exposure length. (d) determining the intercept of functions 1 and 2 with the lower voltage value (V min1 , I 1 ) and (e) setting these values on the apparatus ready for the next exposure. Preferably, as shown, the current is plotted as its logarithm. If the curve 2 is not completely accurate, the process may be repeated using initial values V m  in  1 , I, and generating a function (3) (similar to (2) but displaced in the log I direction) from which operating parameters V min2 , I 2  can be determined. The mechanical determinations can be carried out using a jig by which the curve (2) or (3) can be moved parallel to the log I axis; curve 1 being fixed relative to the axes. In an electrical embodiment, x-ray tube 5 has its voltage controlled from 7 and its current from 9. The radiation intensity at the film is detected at 41 and fed to exposure meter 35 which calculates the tube voltage necessary to give the desired dose and supplies this at output 51. Circuits 69 and 32 give, for an input voltage V, the corresponding values of log I from curves 2 and 1 respectively of Fig. 1. Exposure timing is controlled by a duration signal from 47. For the test reading V test  is supplied from input 21 to capacitor 85, an output log I test  being produced at output 31 of circuit 32. During the exposure, the exposure duration signal at 63 causes circuit 61 to set itself to its input value of, log I test . After the exposure, switch 83 is closed, closing loop 17. Adder 55 receives the output from exposure meter 35, circuit 32 and circuit 61 (which supplies the difference between the value stored during exposure and the output of circuit 69) and the value of V in the circuit alters until it reaches V min   1 , which is stored on capacitor 85. This value may be used for subsequent exposures or may be refined by a similar procedure with initial values V min1  and log I test .
Patent GB-1134781-A (GB)
Title: Mounting sheet and method of manufacture
IPC: A61B5/0402
Filed: 1966-09-30
Abstract: 1,134,781. Mounting pictures &c. MINNESOTA MINING & MFG. CO. 30 Sept., 1966 [23 Oct., 1965], No. 43756/66. Heading A4X. A record 10, e.g. of medical information, comprises a release sheet 13 detachably secured to zones 12 of pressure-sensitive adhesive deposited on a base sheet 11 by an etched roller of an in-line rotagravure printing press, the sheet 13 being removed so that panels bearing additional information can be adhered to the base sheet opposite printed indicia 14. The base sheet is preferably coated with a barrier preventing migration of the adhesive, and the release sheet may be perforated or weakened at tearing lines corresponding to the zones of adhesive.
Patent GB-1216182-A (GB)
Title: Improvements in or relating to sonic detection systems
Inventor: SCHELISCH ERNST FRIEDRICH
IPC: G01S5/28
Filed: 1966-09-30
Abstract: 1,216,182. Locating noise sources. MARCONI CO. Ltd. 9 May, 1967 [30 Sept., 1966], No. 43835/66. Heading H4D. A system for locating a subaqueous noise source 1, e.g. a ship's propellers, comprises pairs of omnidirectional spaced receivers 2, 3 and 2, 3<SP>1</SP> carried by submerged buoys. The receivers of each pair, e.g. 2, 3, pass their outputs via adjustable broad band delay units 4, 6 incorporating Doppler shift cancellation means to a correlation detector 5, e.g. a cathode-ray tube. In operation, the units 4, 6 are adjusted to give time coincidence at the detector 5 to define a hyperbolic position line for the source. Similarly, units 4<SP>1</SP>, 6<SP>1</SP> are adjusted to give time coincidence at the detector 5<SP>1</SP> and define a second hyperbolic position line, the intersection of the two lines defining the location of the source 1. The location of the source 1 may be determined by a computer fed by outputs from the delay units.
Patent GB-934310-A (GB)
Title: Apparatus for detecting voids in moving webs
IPC: G01N19/08
Filed: 1961-12-07
Abstract: 934,310. Feeding webs. S. D. WARREN CO. Dec. 7, 1961 [Dec. 9, 1960], No. 43868/61. Class 100 (1). [Also in Groups VIII, XIX and XXXVII] A warning device responsive to loss of pressure or vacuum in a chamber and used for detecting voids in a moving web comprises a head 14 with a series of openings 22 (24) normally sealed by contact with the web and connecting with separate chambers, each having an upper part 16 and a lower part 12 separated by a diaphragm 18. The latter comprises a single sheet extending across all the chambers and held between the head 14 and a base 10. Each chamber communicates via a narrow channel 40 and screw-valve 46 with a main exhaust (pressure) channel 42. As shown, the diaphragm, which carries a contact washer 28, is raised by vacuum in chamber 16 to break a signal circuit via screw 50. The vacuum is destroyed by a void in the web 62 passing over the opening 22 and the diaphragm falls to close the circuit associated with that chamber. In an alternative embodiment, pressure is applied to the chambers and the contact screw 50 is arranged to lie above the diaphragm. Slots 54, 58 on either side of the detector slots 24 communicate with openings 60 so that if a fold or wrinkle is present air may enter the openings 22 from underneath the web and provide a signal.
Patent GB-1210310-A (GB)
Title: A display device
Inventor: MILLER WILLIAM N JR
IPC: G09F11/26
Filed: 1968-09-17
Abstract: 1,210,310. Endless-band moving displays; sign supports. W. N. MILLER JR. 17 Sept., 1968 [18 Sept., 1967], No. 44047/68. Heading G5C. An endless indicia-bearing band 76 entrained about vertical drums 31, 66 is provided with detector means 140 adjacent the upper and lower edges of each drum which, if the band begins to slip off the drums, are engaged by the band and initiate a mechanism for tilting a drum (so restoring the band to its correct disposition), and subsequently restore the drum to its vertical orientation. Drum tilting.-As described, drums 31, 66 are mounted in yoke bearings Y, 61 respectively. As illustrated in Fig. 4a, tilting of a drum is achieved by a motor M rotating a screwthreaded shaft 46, causing movement of a screwfollower 47 and hence pivoting of yoke Y about a bolt 26. Tilting is controlled by microswitches 124 (Fig. 11), which energize a motor M and are actuated by detector rollers 140 which are displaced by tabs 76a, 76b if disalignment occurs. Extreme disalignment causes displacement of upper or lower safety switches 120 or 121 which cut off the band drive motor 60. Band tensioning.-The band is engaged by a friction sleeve G mounted on the drums, and is kept tense because idler drum 66 has its bearing yoke 61 secured to guide members 89 urged to slide to the right (in Fig. 3) by a spring 105, see also Fig. 9 (not shown). Alternatively, drum 66 may be replaced by three parallel rollers (141-143), two of them being tensioning jockey rollers mounted on spring-biased bell. crank levers (Fig. 15, not shown).  Mounting.-Each of the runs of the band is viewed through a window in the framework, front-illuminated by tubes (L), Figs. 1, 2 (not shown). The framework comprises channelsection irons (C) clamped back-to-back about uprights (I) which support the sign, Fig. 13 (not shown).
Patent GB-1517517-A (GB)
Title: Clutches
IPC: F16D13/58
Filed: 1975-10-30
Abstract: 1517517 Friction clutches AUTOMOTIVE PRODUCTS Ltd 30 Oct 1975 [27 Nov 1974] 44149/75 Divided out of 1517516 Heading F2C The subject-matter of this Specification is identical with that described in Specification 1,517,516 but the claims are concerned with the pivoting of a clutch release lever on a slotted pin, the slot of the pin engaging a portion of the clutch cover.
Patent GB-1448150-A (GB)
Title: Thyristors
IPC: H01L29/423
Filed: 1973-09-20
Abstract: 1448150 Thyristors SIEMENS AG 20 Sept 1973 [25 Sept 1972] 44178/73 Heading H1K To ensure that a main thyristor formed by alternate conductivity-type regions 1, 2, 3, 4, Fig. 1, does not fire before an auxiliary thyristor formed by regions 7, 2, 3, 4, the space between an ignition electrode 9 and the inner peripheral path 10 of the P-N junction between regions 7 and 2 has three to nine uniformly spaced zones which are mutually equal and narrower than the remainder of the space. To this end, the electrode 9 and/or the path 10 are provided with three to six corners or projections, up to a maximum total of nine. For example, the electrode 9 may be square and the path 10 circular, Fig. 3, or vice versa (Fig. 4, not shown), or both may be square (Fig. 5, not shown). Alternatively, both may be generally circular, projections being provided on one (Figs. 6, 7, not shown) or on both, Fig. 8.
Patent GB-1287629-A (GB)
Title: Process for the production of melt stock
IPC: C22B1/248
Filed: 1969-09-08
Abstract: 1287629 Alloying briquettes from scrap MERCER ALLOYS CORP 8 Sept 1969 [13 Sept 1968] 44354/69 Heading C7D Alloy briquettes are produced from machining waste contaminated with abrasives and organic materials by (1) forming an aqueous slurry of the waste, (2) physically releasing the metallic from the non-metallic solids by impaction (e.g. by water washing or treatment in a rod mill), (3) separating the metallic from the non-metallic solids (e.g. in a gravity concentrator), (4) dewatering the slurry to give a dewatered metallic concentrate (e.g. by means of a dewatering screw), (5) optionally adding alloying ingredients, (6) heating the concentrate to dry it and remove organic and volatile substances therefrom (e.g. first under an oxidizing and then a neutral atmosphere) and (7) briquetting the concentrate (with the optional pre-addition of a binder and/or lubricant. The dried concentrate may be magnetically separated prior to compaction.
Patent GB-1410657-A (GB)
Title: Building element aligner and mortarizer
IPC: E04G21/22
Filed: 1972-09-27
Abstract: 1410657 Brick-laying machine G N BLOOM 27 Sept 1972 [4 Oct 1971] 44543/72 Heading E1S A wall is built by laying a course of bricks 70 in rough alignment on a previously laid layer of mortar, and displacing along the length of the course a machine which accurately aligns the vertical faces of the bricks and simultaneously deposits a layer of mortar on top of the aligned bricks. The machine comprises side walls 20 and floor parts 36 defining a mortar hopper with a downwardly diverging discharge opening 40 between transverse lips 36.4, transversely spaced depending longitudinal aligning plates 32 which engage the vertical faces of the bricks, and supporting runners which engage the upper faces of the bricks and may be rollers 28, as shown, or skids. The pressure exerted by the lips 36.4 forces mortar also into the joints between the bricks. Where two or more adjacent rows of bricks are laid in a course, additional radially tapered rollers 52 are required to wedge the rows apart against the aligning plates 32. The floor parts 36 and the aligning plates 32 are vertically adjustable, and the width of the machine is adjustable. The side walls 20 may be curved for building curved walls, and the machine mounted on a rotating arm. The aligning plates 32 may be resiliently mounted on the side walls 20 and biassed towards one another (Fig. 8, not shown). A masking device is provided for the centre of the mortar hopper when building a cavity wall.
Patent GB-1100800-A (GB)
Title: Improved loading-table interchange transfer means and method of interchange for quilting machines
IPC: D05B11/00
Filed: 1966-10-05
Abstract: 1,100,800. Sewing machines. JAMES CASH MACHINE CO. 5 Oct., 1966 [20 Oct., 1965]. No. 44555/66. Heading D1G. Apparatus for interchanging a first quilt holder supported on a loading table and a second quilt holder supported at a quilting machine comprises means for moving the first quilt holder in a horizontal path towards the quilting machine and means for moving the second quilt holder towards the loading table initially in an upward path to avoid the advancing first quilt holder and finally downwardly into position on the loading table. A quilt holder 2 is initially supported by a loading table T, the quilt holder being provided at one end with trunnions 3 which rest upon longitudinal rails 13 on the table top 11. A second and similar quilt holder 1 is supported at a quilting machine Q by a carriage 6 which is movable along two mutually perpendicular paths, and which supports a stitching template track 8 engageable by a follower head 9 for moving carriage 6 past a sewing head in accordance with track 8. The means for effecting interchanging movement of the holders is mounted on table T. Two endless chains 15 are driven by a motor 19 via a chain 20. A bracket 30, rigid with the upper run of each chain 15, houses a vertically-slidable bar 31. The upper end of the latter carries a hook 33 and the lower end carries a roller 32 engaging a bar 24 having a horizontal middle portion 26 and downwardly-inclined end portions 25, 27. Fixed brackets 37 at the end of table T adjacent machine Q house vertically-slidable bars 38, the upper ends of which carry rails 41 aligned with rails 13, and the lower ends of which are connected to crank arms 48 on a shaft 47 having a crank arm 46 connected to th piston rod 45 of a pneumatic ram 44, supply of air to which is governed by a valve 49 controlled by a solenoid 50 for raising or lowering the rails 41. An arm 60, passing through a longitudinal slot 12 in table top 11, is rigid with the upper run of an endless chain (55) driven by a motor 62 via a chain 63. Initially, rails 41 are lowered with rollers 32 engaging inclined portions 25, and arm 60 engages the end of holder 2 remote from machine Q. the trunnions 3 on holder 1 are then engaged with the hooks 33 and the apparatus is started. Motor 19 then operates to drive chains 15, and rollers 32 run up portions 25 to engage portions 26 for raising the trunnioned end of holder 1. Ram 44 is then actuated for raising rails 41 and thereby holder 1 to a horizontal elevated position. Motor 62 then operates to drive chain (55) rapidly, whereby arm 60 rapidly shifts holder 2 from table T to carriage 6 beneath the raised holder 1. Finally, rollers 32 run down ends 27 and ram 44 is actuated for lowering rails 41, whereby holder 1 is positioned on table T, and motors 19 and 62 are stopped.
Patent GB-984045-A (GB)
Title: Automatic belt or chain tightening mechanism for an infinitely variable cone pulley transmission
IPC: F16H7/08
Filed: 1963-11-13
Abstract: 984,045. Expanding pulley gear. W. REIMERS. Nov. 13, 1963 [Nov. 13, 1962], No. 44884/63. Heading F2D. In an expanding pulley belt or chain gearing in which both pairs of conical flanges 14 and 15 move relatively axially in opposite directions for a ratio change by turning a spindle 12 to pivot levers 11 on tension blocks 1 slidably mounted on a spindle 2, one or each tension block 1 is inwardly biased by springs 4 to tighten the belt or chain 16 and is or are engaged at their outer faces by clamping nuts 3 screwed on opposite pitch threads on the spindle 2, the clamping nut and/or the spindle 2 being rotatable and subjected to a continuously applied torque tending to tighten the clamping nuts to decrease the distance therebetween to maintain engagement and support of the blocks 1 as they are moved inwardly towards each other under the action of the springs 4. As shown, the spindle 2 is non-rotatably mounted in a housing 13, a continuous torque being applied to the nuts 3 by meshing pinions 10 fast with a spindle 5 pre-loaded by a torsion spring 6. In Figs. 3 and 4 (not shown) the tension blocks are axially biased for belt or chain tensioning by Belleville springs acting through rods which are supported in non- rotatable clamping nuts mounted on the screwed spindle, the spindle being rotatably mounted in the housing and subjected to torsional pre-loading by a spring acting on a lever fixed to the spindle. In Figs. 5 and 6 (not shown) the blocks are similarly biased by Belleville springs arranged directly between the blocks and abutment nuts the latter of which are axially adjustable by turning the spindle for initial adjustment to the required tension, the spindle carrying a flanged disc by which it can be locked for automatic operation of the tensioning arrangement effected by clamping nuts screwed on the abutment nuts and subjected to torsional pre-loading by a circumferentially arranged spring.
Patent GB-1443465-A (GB)
Title: Synthesis of aliphatic nitriles and apparatus for use therein
IPC: G01N33/00
Filed: 1973-09-25
Abstract: 1443465 Unsaturated nitriles by ammoxidation of olefins BF GOODRICH CO 25 Sept 1973 [25 Sept 1972] 44931/73 Heading C2C [Also in Division G1] Olefinically unsaturated aliphatic nitriles are produced by an ammoxidation process which comprises passing a mixture of an aliphatic alpha-monoolefin containing from 2 to 6 carbon atoms, ammonia and oxygen, or an oxygencontaining gas, through a solid ammoxidation catalyst at a temperature of 500-1150‹ F., wherein a portion of the gases leaving said catalyst is cooled, conditioned to and maintained at a temperature of 350-450‹ F., solids larger than 5 microns in diameter are removed from said gas, and the resulting filtered and temperature-conditioned gas sample is subjected to analysis. The gasse may be withdrawn continuously during the reaction near the exit from said catalyst, which is preferably an antimony/uranium oxide catalyst which may be regenerated at intervals by high temperature treatment, and the gases subsequently analysed by mass spectrographic analysis. The gases which have been removed from the reaction, after cooling, may be confined in a closed gas flow circuit maintained at 350-450‹ F. and the solids contained in the gas stream, and preferably all particles having a diameter of greater than 1 micron, may be removed by employing a series of filters of progressively smaller pore sizes. The quantity of the gases flowing in said closed gas circuit is relatively large compared to the quantity required for analysis, and the rate of flow therein is preferably sufficiently large to minimize lag in said analysis. The proportion of unreacted oxygen in the effluent gases is advantageously maintained, in response to said analysis, at a level sufficient to maintain a maximized state of oxidation in said catalyst. In the mass spectrographic analysis the composition of the effluent gases is determined from the amplitude of a peaked direct current electrical signal which is generated which is directly proportional to the proportion of each gaseous constituent; in response to the analysis the parameters of the process, such as the composition of the feed mixture, may be varied. The gases may be removed from the reaction by means of a shielded filter probe adapted to remove catalyst solids and, in addition to the closed gas circuit and mass spectrometer analyser, the overall circuit may comprise remote stream selector control modules, a direct reading oscillograph, a computer interface unit and computer and manual card punch data feed modules. The process may be utilized in a commercial nitrile plant employing two reactors. The production of acrylonitrile and methacrylonitrile is described and illustrated by means of flow diagrams.
Patent GB-1478155-A (GB)
Title: Storage apparatus
IPC: B65G17/32
Filed: 1974-10-17
Abstract: 1478155 Storing articles on conveyors SKF INDUSTRIAL TRADING and DEVELOPMENT CO BV 17 Oct 1974 [18 Oct 1973] 45049/74 Heading B8A Annular articles 11 are fed to carrier rods 9 of a storage conveyor by a feed shoot 10. The guide 12 on the conveyor side of the shoot is slotted so that each rising rod 9 picks up the leading article 11. The guide 13 on the other side of the shoot, cams the article along the rod 9 a sufficient distance to leave a space for the pick-up of a further article. Articles 11 are successively discharged to a shoot 14 by the action of a ram 15. The width of the shoot permits the discharge of only one article at a time.
Patent GB-1026747-A (GB)
Title: Visual safety locking apparatus
IPC: F16J13/16
Filed: 1962-08-24
Abstract: 1,026,747. Pressure-resisting doors. WILMOT CASTLE CO. Aug. 24, 1962 [Sept. 21, 1961; Dec. 8, 1961], No. 45328/65. Divided out of 1,026741. Heading F2P. [Also in Division E2] The subject matter of this Specification is substantially the same as that of Specification 1,013,693, but the claims differ.
Patent GB-1334446-A (GB)
Title: Luminescent screens
IPC: H01J9/227
Filed: 1971-09-29
Abstract: 1334446 Luminescent screens PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 29 Sept 1971 [2 Oct 1970] 45359/71 Heading H1D A light-absorbing coating is provided on a colour television screen in the interstices of the phosphor areas by coating the screen with a photo-resist such as polyvinyl alcohol activated with bichromate and containing a filter material, such as "Grasolecht Gelb" which is opaque to ultra-violet but transmits longer wavelengths; exposing the coating three times through a shadow mask and removing unexposed parts of the coating to leave a (dot) pattern corresponding to the areas on which phosphors will be deposited; coating the screen with a photoresist (pva) containing light-absorbing particles such as graphite; exposing this coating with ultra-violet from the opposite side of the screen so that only the interstices of the phosphor areas are exposed, and removing the unexposed areas; and removing the filter areas with a solvent such as ethanol or acetone. The three sets of phosphors are then deposited in known manner by photo-conductive or by photo-resist processes.
Patent GB-1017969-A (GB)
Title: Improvements in or relating to compresses
IPC: A61F13/56
Filed: 1963-11-20
Abstract: 1,017,969. Bonded-fibre fabrics. MAB OCH MYA A. B. Nov.20, 1963 [Nov. 30,1962], No. 45872/63. Heading D1R [Also in Divisions A3 and A5]. A method of making compresses, e.g. sanitary towels and diapers, comprises introducing long and short fibres in air streams into a fibre-depositing zone which has a moving air-permeable wall, sucking the fibre on to the wall to form a web, causing the long fibres to adhere together and dividing the web into compresses. The long and short fibres are introduced into the depositing zone in such a way that the short fibres are situated in a central area of the width of the web and between layers of long fibres. As shown, long fibres (e.g. woolly fibres from rayon staple fibre waddings) and short hydrophilic fibres (e.g. fibrated wood pulp), suspended in air streams, are introduced from passages 5 and 6 respectively into a fibredepositing zone defined by air-permeable belts 3 moving around perforated drums 1 and rolls 4. The fibres are sucked against belts 3 and pressed into a web 7 by rolls 4 such that the short fibres are located in a central area of the width of the web and are enclosed by long fibres. The web is then passed between press rolls 8, sprayed with adhesive by nozzles 9, passed through heater 10 to cause the long fibres to adhere together, passed between heat press rolls 11 and cut into sanitary towels or diapers as required. Instead of applying adhesive by nozzles 9, the long fibres may be made of heat-sealable material or have been previously coated with adhesive. The web may be further coated on one side with a liquid-impermeable or -repellent layer. The rolls 8 and 1<SP>1</SP> are such that the web has a cross-section (see Fig. 3, not shown) in which the central area 7a is formed substantially of short fibres and the ends 7b of long fibres.