baber/WOPTO huggingface dataset:
Patent GB-1207997-A (GB)
Title: Device for measuring the density of a fluid
Inventor: BROCKHAUS SIEGFRIED
IPC: G01N9/00
Filed: 1967-10-20
Abstract: 1,207,997. Measuring density. S. BROCKHAUS. Oct.20, 1967 (Oct. 22, 1966], No.47866/67. Heading G1S. A device for ascertaining the density of a fluid comprises supports 66 in which a resonatable tube 60 made of resilient material is rigidly mounted and means for exciting the tube to oscillate at its resonant frequency, which frequency depends on the density of the fluid in the tube. The inlet 62 and the outlet 64 of the tube are connected to resilient couplings for passing the fluid through the tube and the relatively massive supports 66 are mounted on a rail 68. At least one of the supports is slidable along the rail and the tube is excited by a suitable electromagnetic system connected to a variable frequency source of alternating electric energy. The tube, which has a circular cross-section, is made of magnetic material such as steel and may alternatively be supported at one end only. The oscillation of the tube may comprise a bodily oscillation perpendicular to the longitudinal axis of the tube or an oscillation which periodically deforms the tube cross-section. The apparatus is calibrated by determining the resonant frequency for a fluid of known density.
Patent GB-1099920-A (GB)
Title: Package for sterile storage of surgical devices and accessories
Inventor: LONGHOLDT HANS CHRISTIAN RONNO
IPC: A61B19/02
Filed: 1966-10-25
Abstract: 1,099,920. Sterile packages; bags with opening devices. NOVO TERAPEUTISK LABORATORIUM A/S. Oct. 25, 1966, No. 47906/66. Headings B8C and B8K. A package for the sterile storage of surgical devices, e.g. peans, comprises a bag 1, Fig. 2, having welded side seams 3 extending over part of the bag length. An extension 4 of the top edge, secured at 5, facilitates the opening of the bag to expose the device. In another embodiment, Figs. 3, 4 (not shown), the bag is encased by a strip (10) having ends secured to the bag top edges and welded side seams near the bottom of the bag. A slot (11) in one side of the strip gives access to the bag which is moved upwards to open. Fig. 7 shows an embodiment for uniform opening in which the bottom is sealed by a weld 15<SP>1</SP> and the strips 14 are secured together, and Fig. 9 shows yet another embodiment. The bag may be kept inside a sealed outer wrapper, Fig. 8 (not shown), formed from a laminate of aluminium foil and e.g. polyethylene, or other laminates. The bag may be formed of plastics foils, plastics foil laminates, or plastics foil laminates and metallic foil. A moistening agent may be placed in the package.
Patent GB-1335620-A (GB)
Title: Forged or rolled bar or rod from ledeburitic tool steel
IPC: C22B9/18
Filed: 1971-10-15
Abstract: 1335620 Making steel bar or rod, improving molecular structure BOHLER & CO AG Gebr 15 Oct 1971 [15 Oct 1970] 47998/71 Headings B3A and B3V In a process of making forged or rolled steel bar or rod from a ledeburitic tool steel, a cast electrode of the steel is remelted and poured into a liquid-cooled ingot mould to form a slab, the slab is upset in a succession of forging steps along a long axis and is then elongated transversely to this long axis by forging or rolling. The slabs are made by an electro-slag process which gives fine grain and freedom from shrinkage cavities and segregation. The slab is forged to a square or circular cross-section and the semi-finished product is elongated to a circular or other cross-section. The cross-sectional area of the semi-finished product is at least twice that of the finished bar or rod, which has a homogeneous carbide distribution throughout its cross-section and length.
Patent GB-1114393-A (GB)
Title: Improvements in or relating to apparatus for sensing the orientation of an object
IPC: B65G47/14
Filed: 1965-11-12
Abstract: 1,114,393. Orientating semi-conductor devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. 12 Nov., 1965 [23 Dec., 1964], No. 48039/65. Heading G4H. [Also in Division B8] Apparatus for correctly positioning objects such as semi-conductor chips comprises means for sensing features on a chip to determine its position, said means controlling apparatus for rotating the chip to its correct position. In the form shown, the apparatus comprises eight stations, a vibratory feed bowl 25 (Fig. 2), an orientation sensor 26, an orientator 30, test stations 32, 34, 36 and a vacuum sorter (38). Each chip has three projecting contacts, one of which is positioned half-way along one edge. The feed bowl 25 has a spiral track with grooves which are adapted to retain the contacts on the chip so that a chip is picked up with its contacts facing downwards by one of a plurality of vacuum pencils 42 for transportation to the sensor 26 (see Division B8). The sensor 26 (Figs. 7, 7a), comprises four arms 150, 152, 154, 156 one of which is displaced by the contact positioned half-way along one edge of the chip and so rotates an associated feeler blade 170, 172, 174, 176 carrying a ferrite plug 180. Each plug is positioned over the inductor of a tank circuit of an oscillator so that as the feeler blade rotates, the frequency of one of the oscillators is altered. While the chip is being carried to the orientator (38, Fig. 9, not shown), the frequencies from the four oscillators are fed to frequency detectors 304, 305, 306, 307 (Fig. 10), so that one of the relays 308, 309, 310, 311 is energized and an associated switch 308a, 309a, 310a, 311a closed. The closure of the switch results in one of a further set of relays 313, 314, 315, 316 being energized at a predetermined time in the cycle to extend one of four detents (250b, 252b, 254b, 256b, Fig. 9b, not shown), to engage a stop (248) on the housing (242) of a shaft (222) and so stop the shaft after it has rotated through 0, 90, 180 or 270 degrees depending on which arm engaged the contact. Attached to the shaft (222) is a well (226) in which the chip is placed when it arrives at the orientator, the orientator being then allowed to rotate to its home position by extending the detent 250b and retracting any detent, previously extended. The chip is then correctly positioned. The chip is next transported to a testing station (Fig. 12, not shown), where conductors attached to conductive inserts (328, 330, 332) engaging the chip contacts lead to test circuitry. After testing the chips are fed to a vacuum sorter which places each chip in an orifice corresponding to the result of the test.
Patent GB-1140147-A (GB)
Title: Improvements in d.c. impedance converter circuits
IPC: H03F3/26
Filed: 1966-10-28
Abstract: 1,140,147. Transistor amplifying circuits. FERNSTEUERGER€TE ZACHARIA - OELSCH - MEIER. 28 Oct., 1966 [29 Oct., 1965], No. 48502/66. Heading H3T. An impedance converting arrangement comprises two complementary transistors biased in opposite directions at their bases with respect to a first input terminal 32 and interconnected at their emitters, via series emitter resistors 10, 12, an input voltage being applied via a second input terminal 34 to the junction point of the emitter resistors. A load 22 is connected in a common part of the emittercollector circuits of the transistors and the arrangement is characterized in that one or more separate voltage supply sources electrically separated from the collector supply voltage 18, 20 are provided to produce the base bias voltage. As shown this is produced by separate batteries 28, 30: in an arrangement with A.C. mains supply, the base bias is derived from a separate rectifier fed from its own transformer winding (Fig. 2, not shown). The specification also discloses various modifications in which the input depends upon the position of the slider of a potentiometer, and in which Zener diodes are used to stabilize the base bias (Figs. 3-6, not shown).
Patent GB-1343515-A (GB)
Title: Synthetic rubber composition
IPC: C08L21/00
Filed: 1971-10-19
Abstract: 1343515 Tackifiers for synthetic rubber NIPPON OIL CO Ltd 19 Oct 1971 [20 Oct 1970] 48532/71 Heading C3P Synthetic rubber compositions contain, as a tackifier, 3-30 phr of a phenol-modified resin obtained by polymerizing 100 parts by weight of a hydrocarbon mixture boiling in the range 140-180‹ C., containing unsaturated hydrocarbons and produced by cracking of petroleum, and 3-15 parts of a phenolic compound in the presence of 0À05-5 parts of a catalyst selected from BF 3 , complexes thereof, and AlCl 3 . In examples the rubber is alfin-type SBR, conventional SBR or SBR/polybutadiene rubber blend, and the compositions also contain carbon black, processing oil and conventional vulcanizing ingredients.
Patent GB-486542-A (GB)
Abstract: 486,542. Games of chance. TROUILLET, J. Dec. 4, 1936. No. 33365. Convention da.te, Dec. 4, 1935. [Class 132 (ii)] An apparatus for playing games of chance comprises a magnetic driving member brought into action by the player so as to pass repeatedly and alternately in opposite directions through a normal position and thus exert on a movable element a force of attraction or repulsion which varies from instant to instant in a manner indeterminable by the player. As shown, the device comprises a series of coaxially mounted, independently rotatable, hexagonal drums 1 formed of light material such as cork and surrounded by a sheath of magnetic material 5. A number of magnets 2 associated each with one of the drums is carried by a frame 12 for oscillation as a unit about an axis parallel to that of the drums. The means for setting the magnets in motion comprises a trigger device, Fig. 4. Upon the depression of a plunger 44, a lever 26 is rotated clockwise by the abutment of the plunger with a roller 20 or an arm 22 pivoted to the lever. As the arm descends it is rocked clockwise by a stationary pin 24 to remove the roller from beneath the plunger, whereupon the lever 26 is suddenly restored by a spring 28. A lever 32, linked to the lever 26, is thus rocked clockwise and by the engagement of its byepass pawl 36 with a stud 10, Fig 1, on the magnet frame, sets the latter in motion. The position of rest of the magnets is adjustable by a weight 40, Fig. 2, so that by their action on the drums, the latter are caused to come to rest with their uppermost faces horizontal. This justifying of the drums may be assisted by a ball disposed within an angular track in each drum. Each drum may be held in its rest position by the depression of a key 15, Fig. 2, associated therewith, a spring 11 extending from the key stem co-operating for this purpose with a slide 7 having a forked end for engagement with the drum. The keys are held in their depressed and undepressed positions by springs 23 engaging notches in the key stems. Depressed keys are raised simultaneously by depression of a release key 25 that rocks a bail 33 upwardly into abutment with shoulders 17 on the key stems. The drums may carry figures, words, characters or signs, and instead of being polygonal may be cylindrical and be provided with rods of magnetic material spaced around their peripheries.
Patent GB-1408275-A (GB)
Title: Piling system
IPC: E02D5/44
Filed: 1972-10-23
Abstract: 1408275 Casting concrete piles PAUL CHUAN PAOCHEN 13 Nov 1973 [23 Oct 1972] 48824/72 Heading E1H Apparatus for casting a concrete pile comprises a tube 1 for sinking into a ground formation in which the pile is to be cast. A sealing member 2 extends immovably across the tube near the bottom end and a releasable end plug 4 closes one end of the tube to form a chamber 9 for receiving cement-sand grout. Supply pipe 10 is positioned outside the tube to pass grout under pressure from the surface 13 into the chamber.
Patent GB-1489887-A (GB)
Title: Femoral head prostheses
IPC: A61F2/00
Filed: 1974-11-12
Abstract: 1489887 Femoral head prostheses ROSENTHAL TECHNIK AG 12 Nov 1974 [12 Nov 1973] 48970/74 Heading A5R A femoral head prosthesis comprises a straight cylindrical shaft 2, a flat locating flange 5 of triangular outline, viewed radially of the shaft, projecting laterally from one end of the shaft, and a neck 6 supporting a substantially spherical head 7, projecting from one edge of the flange and overhanging the flange to present a shoulder facing generally towards the other end of the shaft; the shaft, flange, neck and head all being fixed together, in use; with at least the shaft, flange and neck being formed of a ceramic material. The head may be formed integrally with the neck or may be attached by screwing-on or by cementing. The prosthesis is implanted in the femur by first piercing the cortex, forming a preliminary bore within the spongy interior of the bone with a spherically-tipped drill and subsequently enlarging this bore with a hollow twist drill which fits over the shank of the spherically-tipped drill. The cavity to receive the flange is formed by milling the femur by means of a milling cutter moving on a guide rod fitted into the bore produced by boring. The shaft and the flange may have grooves 3, 4 to assist in growing-in of bone tissue and are formed of e.g. aluminium oxide.
Patent GB-1437239-A (GB)
Title: Tempering glass sheets
IPC: C21D1/00
Filed: 1973-10-23
Abstract: 1437239 Tempering sheet glass PPG INDUSTRIES Inc 23 Oct 1973 [24 Oct 1972] 49269/73 Heading C1M Apparatus for tempering glass sheets ineludes a pair of plenum chambers 12 having apertures in their mutually facing walls for directing tempering fluid on to a glass sheet suspended between the plenum chambers, the plenum chambers being mounted so as to be capable of movement in two directions in a plane parallel to the glass sheet or in a closed orbital path. As shown each plenum chamber 12 is mounted on an upper table 42 which is in turn mounted on a lower table 62. A drive shaft 44 is provided which may be linked to one or both pairs of driving cams 46, 70. Each cam 46 causes vertical reciprocation of the corresponding upper table 42 while each cam 70 causes horizontal reciprocation of the corresponding lower table 62.
Patent GB-1173605-A (GB)
Title: Charge Diffusion Systems.
IPC: H01J45/00
Filed: 1966-11-03
Abstract: 1,173,605. Utilizing energy of radiators. GOURDINE SYSTEMS Inc. 3 Nov., 1966 [8 Nov., 1965], No. 49393/66. Heading G6P. [Also in Division H1] A plasma formed by thermal ionization of a static medium is used to produce an electric current through a load 16 by producing an asymmetry in the space-charge sheaths surrounding the two electrodes 11, 12 immersed in it; the asymmetry is produced by using electrodes of different work function, e.g. W and Ta (or Mo) so-that they have different emissions at the same temperature, and it is shown that the differing depths of the sheath caused by the differing emissions causes a net current flow. The whole device is isothermal, the filling being, e.g. caesium, and the temperature range 800- 1300‹ C. Contact ionization need not be present. The envelope 10 is of refractory material such as boron nitride, beryllia or alumina, and the electrodes are screwed into the ends as shown. The source of heat may be external, e.g. rocket or turbo-jet exhaust, or solar rays introduced through a lens aperture in the envelope; or internal, e.g. radio-active PO<SP>210</SP>. Disturbance by thermo-electric voltages may be avoided by making the leads of the same material as one of the electrodes. A number of cells may be joined in series with adjacent electrodes in contact, Fig. 3 (not shown). Semi-conductor devices.-it is stated that the plasma may be replaced by an n-type semiconductor such as germanium; the mechanism remaining the same. The working temperature in this case may be 600‹ C.
Patent GB-1453200-A (GB)
Title: Laminated safety pane
IPC: B32B27/00
Filed: 1973-10-25
Abstract: 1453200 Laminated windscreens SAINTGOBAIN INDUSTRIES 25 Oct 1973 [27 Oet 1972] 49692/73 Addition to 1394271 Heading B5N A laminate for windscreens comprises in order a silicate glass sheet; a plastically-deformable energy-absorbing intermediate sheet, e.g. polyvinyl butyral, of thickness t=0À76-1À5 mm.; a reinforcing sheet of flow threshold stress J, thickness D and elongation at rupture E (DIN 53455); and a self-heating layer as specified in Specification 1,394,271, the product JD being at most 100, preferably 20-70, newtons/ cm. and the minimum permissible value E<SP>1</SP> of E increasing as t decreases so that E<SP>1</SP> = 20% when t = 1À00 mm. and E<SP>1</SP>=70% when t = 0À76 mm. Suitable reinforcing materials are cellulose acetobutyrate and the polyamide "Trogamid T" (Registered Trade Mark) in sheet thicknesses of up to 0À14 mm.
Patent GB-1446564-A (GB)
Title: Supports for laminar elements
IPC: H01L21/02
Filed: 1973-10-25
Abstract: 1446564 Support for laminar elements INTERNATIONAL BUSINESS MACHINES CORP 25 Oct 1973 [24 Nov 1972] 49755/73 Heading G2X A support for a laminar element 11 comprises a pallet 20 supporting means for gripping one side of the laminar element at different places, means to individually adjust the positions of the gripping means relative to the pallet to bring the opposite side of the element to a desired contour, and means to lock the gripping means in position to maintain the desired contour. Specifically, the laminar element is a semi-conductor wafer 11 having its upper surface (11 B) coated with photo-resist which is to be photographically contact-exposed. The support and wafer are placed in a frame 12 of an apparatus (10) in which the contours of the upper surface (11 B) are sensed by a series of sensors 13 connected to a series of comparators (14) which indicate differences between the actual contour of surface 11 B and the desired contour and cause the wafer to be deformed accordingly by rods 22 having suction discs 24, via means 16. The rods are then locked relative to pallet 20 by collets 37 which are pressed against the rods by fluid-pressure in tubes 44, 44A, (47) or by spring-brassed collets (65) which are releasable by fluid-pressure, Fig. 4 (not shown). The pedestal with the deformed wafer may then be removed from apparatus 10 for processing by releasing dowel pins 50 and clamps 53.
Patent GB-1081353-A (GB)
Title: Casting films or sheeting of polyvinyl chloride
Inventor: LOEWENBERG SUSTAV
IPC: B29C48/08
Filed: 1964-12-11
Abstract: Terpolyamides are made from equal proportions of caprolactam, hexamethylene diamine adipate and 4,41 - diaminocyclohexylmethane adipate.  For the application of the product to making films, see Division B5.  Physical treatments to roughen the surface are described.
Patent GB-1439797-A (GB)
Title: Thermosetting resins process tanks and control of fluid therein
IPC: C08G8/28
Filed: 1973-11-06
Abstract: 1439797 Modified phenolic resins BP CHEMICALS INTERNATIONAL Ltd 25 Oct 1974 [6 Nov 1973] 51487/73 Heading C3R A binder resin for the preparation of friction elements comprises a phenolic novolak or resole resin reacted with or containing a metaborate of empirical formula ROBO where R is an alkyl, alkenyl, cycloalkyl or monovalent aromatic hydrocarbon radical in an amount sufficient to give a boron content in the range 0À5-3À0% wt. of the total binder resin. The phenolic resin is preferably one prepared from phenol and formaldehyde. Other suitable phenols and aldehydes for preparing the phenol/  aldehyde resins are cresol, xylenol, resorcinol or cashew nut-shell liquid and furfuraldehyde, acetaldehyde or benzaldehyde. The phenolic resins may be modified with natural or synthetic rubbers, fatty oils, fatty acids or epoxy resins. The metaborates exist in the trimeric form of general formula The metaborates may contain minor quantities of orthoboric acid, orthoborates, boric oxide or polyborates. The binder can be used to make composite friction elements containing asbestos and optionally fillers, e.g. barytes, metal filings, rubber, organic friction particles and graphite; and optionally a formaldehyde donor curing agent, e.g. hexamethylene-tetramine, paraform or trioxane. In example 1 a ground mixture of a phenol-HCHO novolak resin binder modified with butyl metaborate, and hexamethylenetetramine is blended with asbestos, barytes, and CELLOBOND (Registered Trade Mark) friction dust and moulded under heat and pressure to form a brake lining which is then heat-treated. In Example 2 a binder is prepared by heating a phenol-HCHO novolak resin with a butadiene/ acrylonitrile rubber latex and then with butyl metaborate. In examples 3 and 4 binders are prepared either from a phenol-HCHO resol resin modified with butyl metaborate or from a phenol-HCHO novolak resin modified with cyclohexyl metaborate.
Patent GB-1195779-A (GB)
Title: Preparing Lactams by Selective Hydrolysis and Cyclization
IPC: C08G69/08
Filed: 1968-11-01
Abstract: 1,195,779. Preparing lactams. NATIONAL DISTILLERS & CHEMICAL CORP. 1 Nov., 1968 [27 Dec., 1967], No. 51987/68. Heading C2C. Lactams are prepared by the hydrolysis and cyclization of an unsaturated nitrile of the formula where X is CN, COOH, CONH 2  or COOR, R is C 1-6  alkyl and n is 1, 2 or 3, wherein the nitrile is reacted with at least a stoichiometric amount of water and a basic ion-exchange resin or a strong quaternary ammonium salt catalyst at elevated temperature and under atmospheric or elevated pressure. A solvent is preferably present. The compound 5-cyano-2-piperidone is claimed.
Patent GB-1277810-A (GB)
Title: Process for increasing the degree of condensation of granular plastics materials
IPC: C08G63/80
Filed: 1969-10-23
Abstract: 1277810 Solid phase polymerization FARBWERKE HOECHST AG 23 Oct 1969 [23 Oct 1968] 52000/69 Heading C3R The degree of condensation of a granular plastics material is increased by introducing the material, which has been pre-heated to a temperature in the range of from the aftercondensation temperature to be applied to 100‹ C. therebelow, into a reactor that is not reduced in cross-section in the direction of flow of material and which contains no interior projections protruding into the flow of material, and heating the material, without agitation, and in an inert gas stream or under reduced pressure, to a temperature at which it after-condenses. The granular plastics material may be polyethylene terephthalate and the process may be a batch or continuous process.
Patent GB-1103678-A (GB)
Title: Silver catalysts
IPC: B01J23/66
Filed: 1966-11-21
Abstract: A gas mixture containing 5.0% C2H4, 6% O2, 6% CO2, 0.5% C2H6, 2-5 p.p.m. C2H4Cl2 and the balance N2 was fed to a reactor containing 47 c.c. of catalyst at atmospheric pressure and elevated temperature, e.g. 250-270 DEG  C. G.H.S.V. was 520 and contact time 3.0 secs. Selectivity of conversion to C2H4O was around 60%.  The catalyst contains 5-20% Ag and 0.1-5% Ba supported on a carrier and made by a 5-stage process involving (1) precipitating of silver, (2) washing free of alkaline cations, (3) blending with Ba+ +, (4) loading on to a support, and (5) reducing.ALSO:Oxidation catalysts are made by (a) precipitating Ag2Co3 from an aqueous solution of a Ag salt with alkali metal carbonate at a pH of 7.5-10, to give Ag2CO3 having a chrystallite size of about 150-400  (b) washing the Ag2CO3 substantially free of alkali metal ions (c) blending an aqueous slurry of the Ag2CO3 with Ba(OH)2 to provide from 1-25 parts by weight Ba per 100 parts by weight silver in the slurry (d) adding the slurry to an inert particulate support to impregnate the support with Ag2CO3-Ba(OH)2 and (e) activating the catalyst in a stream of hydrogen-containing gas at a temperature of 100-400 DEG C. and cooling the activated catalyst to room temperature, the catalyst containing 5-20% Ag and 0.1-5% Ba based on the total weight of supported catalyst.  The carrier may be SiO2, Al2O3 or mixtures having a surface area of 1m2/gm and particle size 3/16 -\ba3/8 " diameter.