baber/WOPTO huggingface dataset:
Patent GB-951148-A (GB)
Title: Improvements in dental drilling machines
IPC: A61C1/00
Filed: 1961-11-02
Abstract: 951,148. Dentistry. SIEMENS-REINIGERWERKE A.G. Nov. 2, 1961 [Nov. 4, 1960], No. 39311/61. Heading A5R. A dental drilling machine comprising a handpiece and a coupling part to which the handpiece is releasably attached for driving thereby has a manually-operable switch, controlling the electric or pneumatic drill driving motor, mounted on the coupling part with its actuating member constructed as a press key and extending substantially parallel to the axis of the hand-piece. The switch body 1 is attached to the coupling part at 13, a press key 3 being slidably mounted in the body, a spring 4 engaging notches in the key to maintain the latter in a selected position. The body 1 may be of plastics or of metal; in the former case an abutment 12 is provided on the body and engages the hand-piece when the key is depressed. The switch may also include a control resistance associated with the control circuit of a magnetic amplifier which effects control of the speed of the driving motor. In another embodiment a push-button control is built into the body 1, one button determining the rotational direction of the drill, the other controlling the speed.
Patent GB-1387545-A (GB)
Title: Mounting device for a radiating high-frequency line
IPC: B61L3/22
Filed: 1973-08-21
Abstract: 1387545 Aerials KABEL-UND METALLWERKE GUTEHOFFNUNGSHUTTE AG 21 Aug 1973 [2 March 1973] 39485/73 Addition to 1379364 Heading H4A [Also in Division H2] A mounting device for a radiating H.F. line as described in the parent Specification 1,379,364, is further provided with one or more guiding strips which fit over its lower end, and which effectively close it along its whole length when in place. In one embodiment, each guiding strip fits into the gap between two adjacent fixing bases. In another embodiment, the guiding strip 15, Fig. 4, is in a continuous length and separate fixing bases are not used. The strip is fixed to the sleepers 3 by means of screws 18 with washers 17, oversize holes 16 being provided in the strip to allow for some relative movement, for example, when track works are in progress. The lower part of the hood 5 is received in channels 19, 20 in the strip 15, and is retained by snap action.
Patent GB-1085292-A (GB)
Title: Improvements in and relating to apparatus for the generation of mists
IPC: F16N29/04
Filed: 1964-09-28
Abstract: 1,085,292. Lubricating. JOSEPH VOGELE A.G. Sept. 28, 1964 [Sept. 28, 1963], No. 39486/64. Heading F2A. In apparatus for supplying oil-mist to at least one bearing by way of a pipe 4, compressed air in a pipe 3 enters a reservoir 1 through a box 11 and forces oil up a pipe 7, which contains a non-return valve 6, whence the oil enters the box 11 through a drip-feed orifice 8, a chamber 9, a pipe 9a and a nozzle 5 that is lodged within a Venturi 10 connecting the pipe 3 to the box, the flow of oil in the pipe 9a being detected by a photo-sensitive device e.g. a photo-electric cell or a photo-sensitive resistor, 13, that is actuated by the passage of light from a lamp 14 through the pipe so that alarm is given when the flow of oil is interrupted. The oil-mist is generated by oil leaving the nozzle 5 and mingling with the compressed air as it enters the box 11, the latter being provided to effect separation of large droplets of oil from the mist as it flows into the reservoir towards the pipe 4. Alternatively, a photo-sensitive device e.g. a photo-electric cell (16), Fig. 3 (not shown), and an associated lamp (15) may be arranged to detect the flow of mist in the pipe 4. Otherwise, a heat-sensitive resistor (17), Figs. 4, 5 and 6 (not shown), may be inserted in either the pipe 7 or the pipe 9a to detect the flow of oil therein.
Patent GB-1477303-A (GB)
Title: Pharmaceutical compositions
IPC: C07D471/04
Filed: 1973-08-22
Abstract: 1477303 Contraceptive-abortive agent GRUPPO LEPETIT SpA 28 May 1974 [25 May 1973 22 Aug 1973] 21586/74 and 39789/ 73 Heading A5B A composition for preventing or interrupting pregnancy comprises (a) 2-phenyl-5, 6-dihydro-s-triazolo [5, 1-a] isoquinoline or 2- phenyl-s-triazolo [5, 1-a] isoquinoline or a salt thereof and a carrier.
Patent GB-1153660-A (GB)
Title: Digital Signal Cross-Correlator
IPC: G06G7/19
Filed: 1967-08-31
Abstract: 1,153,660. Telegraphy. SPERRY RAND CORP. 31 Aug., 1967 [3 Jan., 1967], No. 39947/67. Heading H4P. Digital data is passed in true and invert form to a switch which selects one or other input under the control of a reference signal, the switch feeding an integrator. As described, phase modulated binary data (a), Fig. 3, is passed both direct and via an inverter to a transistor switch controlled by reference signal (b) to pass alternate half-bits of both inputs. The resulting signal (c) represents the received data in N.R.Z. form and feeds an integrator. The integrator is reset to zero at the end of each bit period, its output being as (f). Alternatively, two integrators are used, operating in alternate bit periods, the output of one such integrator being as (h) and having a reset control (g).
Patent GB-1284882-A (GB)
Title: Methods of producing luminescent materials
Inventor: CHASE EUGENE WAITE
IPC: C09K11/00
Filed: 1969-08-11
Abstract: 1284882 Luminescent materials and uses thereof WESTERN ELECTRIC CO Inc 11 Aug 1969 [12 Aug 1968] 40025/69 Heading C4S A method of producing a luminescent material comprises evaporating a luminescent compound of fluorine and an element from Cr, Mn, Fe, Co, Ni, Cu, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm and Yb and a host material on a substrate so that each is uniformly dispersed and the compound substantially undissociated. The compound may be in amount 0À1 to 10 molar per cent, up to 30 and 35 mole per cent also being instanced and may be YbF 3 , NdF 3 , ErF 3 , TmF 3 , HoF 3 , TbF 3 , PrF 3 , DyF 3 , EuF 3  and EuF 2  vaporized between 900‹ to 1000‹ and 1200‹ C. and the host may be ZnS vaporized between 910‹ and 1000‹ C. (800‹ C. also instanced). The substrate may be at room temperature and the pressure 10<SP>-5</SP> to 10<SP>-5</SP> mms. Hg. Fluorides of the transition metals are instanced such as 0À1 to 0À5 mol. per cent MnF 2  vaporized at 600‹ to 900‹ C. with a ZnS host. Impurities are preferably <0À1%. The host material preferably has a high order of crystalline perfection although in thin film EL devices, polycrystalline films may be used, and powders are mentioned as cathodoluminescent and EL materials, emitting in the U.V., infra-red and visible, lamp, display panel and c.r.t.'s being specified devices. Cathodoluminescent host materials may also be zinc silicates and yttrium vanadates. The emission centre concentration for cathodoluminescence is preferably an order of magnitude higher than for electroluminescence. An EL device may include a tunnel injecting contact formed by 10 to 300 Š insulator 32 and conductor 33 with thin luminescent film 30, a Schottky junction injection contact device (Fig. 2, not shown) operated on D.C., while Fig. 3 (not shown) includes a thick blocking insulator 52 (e.g. 1000 Š to several Á) preferably A.C. operated. Host materials permitting majority carrier injection include II-VI compounds such as ZnO, ZnS, ZnTe, CdS, CdSe, CdTe, and mixed crystals such as ZnSZnSe, ZnS-ZnO, III-V compounds such as GaAs, GaP, GaN, AlN; Group IV elements and compounds such as C, SiC, Si, Ge, and Group II halide compounds such as CdF 2 . If Gd<SP>3+</SP> is used, the host is preferably CdF 2  or AlN. As EL materials, ZnS and CdF 2  are preferred for fabrication as thin films and SiC for chemical stability. Hosts amenable to vaporizing by heating include ZnO or SiC, the latter also being vaporizable by electron gun or reactive pyrrolytic techniques. If the luminescent compound is less stable in the host, the material temperature should be controlled such as below 1200‹ C., for instance a 1000 Š to 5000 Š film of TbF 3  in ZnS is maintained below 1000‹ C.
Patent GB-1495178-A (GB)
Title: Cooling system for an external combustion engine such as a stirling engine
IPC: F01P7/14
Filed: 1975-10-02
Abstract: 1495178 Engine cooling systems FORD MOTOR CO Ltd 2 Oct 1975 [4 Oct 1974] 40258/75 Heading F4U [Also in Division F1] A cooling system for a Stirling engine A comprises an engine-driven primary pump C, which is operative during operation of the engine, and an auxiliary pump D which is operative after the engine has shut down. As shown, entrance and exit headers 32, 39 for the engine are connected by parallel passages having portions 35-38 acting as heat absorbing zones, e.g. roll sock seals, Fig. 3 (not shown). Flow from the exit header passes through a radiator 43 to the primary pump C which is connected to the entrance header by a passage 31 containing the auxiliary pump D. A branch circuit comprises a passage 40 leading to a primary heat absorption zone 41, e.g. surrounding the primary working walls of the engine, and a passage 53 leading from the zone 41 to the radiator. The electric drive motor of the auxiliary pump D is controlled by a sensor 49 in the exit header 39, and the pump has pivoted blades, Figs. 4-6 (not shown), which align themselves with the fluid flow during operation of the primary pump C and which pivot to an operative impelling position when the pump C stops and the motor of pump D is actuated.
Patent GB-1083717-A (GB)
Title: Improvements in or relating to apparatus for and method of sheet delivery
IPC: G03D13/00
Filed: 1964-10-02
Abstract: 1,083,717. Sheet delivering apparatus. ITEK CORPORATION. Oct. 2, 1964 [Oct. 4, 1963], No. 40262/64. Heading B6H. A sheet delivering apparatus integral with an automatic offset plate-making camera-processor comprises transport means including rollers 20, 22 for advancing the processed sheets 10 along a horizontal path (shown in hatched outline) and a pair of guide rollers 38, 40 spaced at a distance less than the width of the sheets to bow the sheets longitudinally as they travel along the horizontal path, whereby the portion of the sheets beyond the guide rollers is self-supporting. As the sheets leave the transport rollers the leading edges engage a fulcrum surface 54 and the trailing edges fall freely into a removable tray 62. In another embodiment (Fig. 3, not shown) the bottom surface 60 of the tray may be integral with the back wall 58, i.e. the tray may be dispensed with.
Patent GB-1262170-A (GB)
Title: Hydraulically actuated percussive tools
IPC: B25D9/12
Filed: 1969-08-13
Abstract: 1,262,170. Percussive drills. WESTINGHOUSE AIR BRAKE CO. 13 Aug., 1969 [13 Aug., 1968], No. 40469/69. Heading B4C. [Also in Division, B3] A percussive drill comprises a piston 38 for impacting upon and driving a striker piston 32 having an enlarged portion 134, a drill bit 28 and a valve 44 controlling the flow of hydraulic fluid to the piston 38 causing a succession of driving strokes, the enlarged portion 134 throttling the hydraulic fluid through a port 130 on the pistons 32's return stroke. This throttling reduces cavitation in a chamber 128. The chamber 124 containing the portion 134 is in the operating fluid circuit so that cushioning heat is removed. Pressurized hydraulic fluid i.e. oil passes from an inlet 76 into an accumulator formed in a chamber 68, then through a port 80 and past a transversely movable spool valve 44 to act on the piston 38. The valve 44 is moved by pins 54, 56, pressure being constantly maintained in a conduit 60 to act on the pin 56 which is of lesser area than the pin 54. With the piston 38 in the position shown in Fig. 2, equal pressures act in conduits 58, 60 hence causing the valve to be positioned as shown due to the difference in the areas of the pins 54, 56. The hydraulic fluid acting on the piston 38, causes it to accelerate, consequently driving the piston 32 and the drill bit 28. The pistons 32, 38 may be returned by a spring (not shown) or by hydraulic pressure applied via a line 106 to an annular chamber 116, so that this pressure may act on a shoulder 120. However, when the piston 38 is in the striking position (Fig. 3, not shown), conduit 58 is connected to exhaust, hence raising (as shown) the valve 44 and allowing oil to be discharged via ports 126/128 into a cavity 124. The oil in this chamber 124 cushions the forward stroke of the piston when trapped between bevelled edges 138, 140 and cushions the return stroke by being throttled by a bevelled edge 136 through the port 130. Excess oil is exhausted from the cavity 124 through a discharge port 144 and some oil may pass through ports 146, 148 for lubrication purposes. The pistons may be returned by a further piston (156) Fig. 7, (not shown) attached to the end of the drill bit 36 and engaging with a passage (154) in the piston 32, the passage (154) being supplied with pressure oil via conduits (158) (170) to return the piston. The drill bit may be rotated by a fluid motor 102 acting through gears 96, 98, 100 and a meshing sleeve 88 splined to a chuck 26.
Patent GB-914108-A (GB)
Title: Improvements in thrust diverting means for vtol and stol aircraft
IPC: B64C29/00
Filed: 1960-11-25
Abstract: 914,108. Jet propulsion plant. GENERAL ELECTRIC CO. Nov. 25, 1960 [Nov. 27, 1959], No. 40571/60. Class 110 (3). [Also in Group XXXIII] A cascade of vanes 15 is disposed across the exhaust outlet of a jet propulsion installation comprising a fan 12 in a duct 11. The vanes are pivotable about spanwise axes near their leading edges, to vary the area of the outlet. Specification 899,239 is referred to.
Patent GB-886832-A (GB)
Title: Improvements in or relating to serrated-edge knives
Inventor: FOWLER SYDNEY
IPC: B26B9/02
Filed: 1958-12-17
Abstract: 886,832. Knives. WOSTENHOLM & SON Ltd., GEORGE. Dec. 9, 1959 [Dec. 17, 1958], No. 40650/58. Class 30 The blade 1 of a carving &c. knife has an uninterruptedly-bevelled cutting edge composed of serrations 2 of obtuse convex profile and each individually bevelled. Concave surfaces 5 blend smoothly with the bevelled surfaces of adjacent serrations and are formed simultaneously therewith by a form wheel having a helical form of appropriate pitch. Extensions 6 of the concavities 5 are formed by a second pass, at a different angle, of the same form wheel or by a pass of another form wheel of the same pitch. In a modification, concavities 5 and extensions 6 are provided on both surfaces of the blade the serrations 2 being in register or staggered with respect to each other between face and face.
Patent GB-1019015-A (GB)
Title: Process and apparatus for producing plastic net
IPC: B29C48/08
Filed: 1962-10-29
Abstract: 1,019,015. Extruding plastic net; extrusion apparatus. UNION CARBIDE CORPORATION. Oct. 29, 1962 [Oct. 31, 1961], No. 40842/62. Headings B5A and B5B. A process for producing flat plastic net having finished edges comprises extruding a plastic mass into a plurality of plastic strand-forming streams disposed in at least one circle, imparting relative rotational movement to said strandforming streams in a direction transverse to the direction of extrusion to periodically contact and separate adjacent strand-forming streams while said streams are in a tacky condition, and also extruding at least one double plastic strandforming stream, thereby forming a tubular plastic net having at least one double strand integral therewith and slitting the tubular plastic net along the middle of the double strand. The double strand may be extruded either in the circle or circles or outside them on to the surface of the net formed by the streams. A plastic mass is fed from an extruder 1 into a feed chamber 3 and thence into a conical annular passageway 12 through which it is forced to reach two sets of extrusion nozzles 10, 14. The die head comprises an outer rotatable die member 6 guided in a raced groove 6a inside a heated cylinder 7, said die member 6 having a bevelled or coned surface 9 in which are a set of spaced extrusion nozzles 10, and an inner rotatable coned die member 12 mounted upon a shaft 4, said member 12 having a similar set of spaced extrusion nozzles 14 including at least one double nozzle 14a, 14b. The extruded tubular net is passed over a mandrel 34 and is cut along the middle of the double strand by a slitting wheel or knife 33, which follows the movement of the die member 12 when the latter is rotated. The die members may rotate in opposite directions and at different speeds, or may rotatably oscillate with one part stationary if so required. In an alternative apparatus for carrying out the invention the nozzle for extruding the double strand is disposed outside the circle or circles of the single nozzles, Fig. 5 (not shown). The plastics material used may be synthetic thermoplastic resins such as polyamides or superpolyamides, polyesters, vinyl polymers, styrene polymers, acrylonitrile polymers, vinyl chloride polymers, copolymers of vinyl chloride and polyolefins; natural or synthetic rubbers; thermosetting materials or mixtures thereof with thermoplastic materials ; natural and synthetic fibre-forming materials such as cuprammonium cellulose, protein material (e.g. from soya bean) and cellulose acetate; and foamable compositions containing any of the above.
Patent GB-963294-A (GB)
Title: Process for the production of polyhydric diaryl-alkanes,-cycloalkanes and -aralkanes
IPC: C07C39/15
Filed: 1961-11-16
Abstract: Polyhydrioxy-diaryl-alkanes, -cycloalkanes and aralkanes are prepared by adding a mono- or polyhydric phenol to an alkenyl phenol of the formula: <FORM:0963294/C1/1> wherein R1, R2 and R3, which are the same or different, are hydrogen atoms or alkyl, cycloalkyl or aryl hydrocarbon radicals or R1 and R2 can be joined to form a 6-membered cycloaliphatic ring, in the presence of 0.001 to 20% by weight of an anhydrous acidic catalyst or of 0.01 to 20% by weight of an alkaline catalyst, said percentages being based on the total weight of the phenolic reaction components.  The reaction is preferably carried out under anhydrous conditions, at between 0 DEG  and 40 DEG C. in the case of acidic catalysts, and at from 50 DEG  to 200 DEG C. in the case of alkaline catalysts. Inert solvents such as aromatic hydrocarbons, chlorinated hydrocarbons, ethers or alcohols may be used if desired. Phenols and alkenyl phenols used in the examples are: phenol, o-, m- and p-cresols, o-chlorophenol, o-cyclohexylphenol, 2, 6-diethylphenol, resorcinol, 2, 6-dichlorophenol and a -naphthol; and p-isopropenylphenol, p-(1-phenyl vinyl)-phenol and p-(1-methyl -2- methylvinyl)-phenol. Other starting materials mentioned include octyl- and decyl-phenols, bromophenols, guaiacol and pyrogallol; 2-methyl -4- (1-methyl-vinyl)-phenol and p-(1, 2-cyclohexenyl)-phenol. Specification 905,994 is referred to.
Patent GB-1433755-A (GB)
Title: In-line coupling of two lengths of linear optical waveguide elements
IPC: G02B6/38
Filed: 1973-09-01
Abstract: 1433755 Moulding waveguide element PLESSEY CO Ltd 2 Aug 1974 [1 Sept 1973] 41236/73 A jig for moulding optical waveguide-coupling blocks (see Division G2) from epoxy resin, comprises a hollow trough 5 ... 7, the end walls 7 of which carry opposed tapered core pieces 7a, 8a having apertures 7c, 8c adapted to receive a wire 9. The core pieces may be axially withdrawn through the walls 7, 8, or they may be fixed to the walls which are removable.
Patent GB-1158703-A (GB)
Title: Material Handling Attachment for use with a Vehicle having a Vertically Swingable Boom
IPC: E02F3/40
Filed: 1966-09-16
Abstract: 1,158,703. Earth working equipment. INTERNATIONAL HARVESTER CO. 16 Sept., 1966 [10 Dec., 1965], No. 41405/66. Heading E1F. A dozer-digger bucket assembly has a dozer plate structure 38 for pivotally mounting on, to extend transversly of, a vertically swingable boom 12 and a U-shaped structure 50 that is pivotally mounted at 54 on the structure 38 so that it may be swung by jacks 62 from a position immediately ahead of the structure 38 to a position immediately behind the structure 38 as desired for the particular usuage off the assembly. A blade 58 is so secured to the lower edge of the structure 38 as to lie in contact with the upper surface 56 of the structure 50 as it is being swung past the structure 38.
Patent GB-1129561-A (GB)
Title: Low d.e. starch syrup
Inventor: HIDDEMA KORNELIS
IPC: A23L1/09
Filed: 1965-10-01
Abstract: 1,129,561. Glucose syrup. COOP. VERKOOP - EN PRODUCTIEVERENIGING VAN AERDAPPELMEEL EN DERIVATEN " AVEBE " G.A. 5 Sept., 1966 [1 Oct., 1965], No. 41797/65. Heading C2C. Glucose syrup with a low dextrose equivalent is prepared by the hydrolysis of starch with acid to obtain a product with a D.E. above 7% but below 16%, followed by treatment of the hydrolysate with an enzyme preparation of substantial α-amylose activity to obtain a final product with a D.E. between 23 and 35%. Potato, maize, tapioca, sago and wheat starches may be used. The α-amylose obtained from bacteria such as Bacillus Subtilis used at a pH between 3À5 and 9À0 is preferable for the second stage. The product is clear and non-hygroscopic and suitable for use in confectionery.
Patent GB-1048298-A (GB)
Title: Catalytic dehydrogenation of 1,2-glycols
IPC: B01J21/00
Filed: 1964-10-15
Abstract: Keto-alcohols are made by contacting a glycol of the formula RCHOH.CH2OH, where R is a C1- 16 hydrocarbon radical, in the vapour phase at 200-450 DEG  C. with a catalyst prepared by hydrogen reduction at 300-500 DEG  C. of a mixture of copper, zinc and chromium oxides, comprising 5-50% by weight of copper, 2-25% by weight of chromium and 93-25% by weight of zinc.  Specified glycols are 1,2-propylene glycol, 1,2-butylene glycol, 1,2-dodecylene glycol and phenylethylene glycol. The examples include comparative experiments using other metal catalysts.ALSO:Catalysts, obtained by the hydrogen reduction at 300-500 DEG C. of a mixture of copper, chromium and zinc oxides containing 5-50 wt. per cent of copper, 2-25 wt. per cent of chromium and 93-25 wt. per cent of zinc (based on total weight of catalyst before reduction), are used for the conversion of 1, 2-glycols to keto-alcohols.  Example 2 relates to a catalyst in the form of 4-16 mesh particles.  Example I includes comparative data relating to Ni-ZnO mixtures supported on alundum and activated carbon.
Patent GB-1421190-A (GB)
Title: Servo apparatus with photosensitive device and compensating  circuit
IPC: G01R17/02
Filed: 1973-09-07
Abstract: 1421190 Photoelectric apparatus; selfbalancing bridge T A DUBAUSKAS 7 Sept 1973 42279/73 Headings G1A and G1U The position of a movable member 46, Fig. 1, is used to control the light from a source 40 which falls on a detector 38, so that the detector output is a function of the position of the member; a second detector 100 is provided to monitor the source output and control it so that the output of the first detector is not affected by aging of the source or by dirt. To ensure that both detectors age similarly they are of the same type and preferably of the same production batch. They are placed close together to be similarly affected by dirt, though member 46 must not obstruct the passage of light to detector 100. The system of Fig. I is used to automatically balance a bridge, one arm of which.is a heat,  pressure or strain sensor, the system being similar to that of Specification 1365406 apart from the detector 100 and the source control. An electric circuit giving more detail occurs in Fig. 9 (not shown), and various different shapes for member 46 are given, Figs. 5, 6 and 7 (not shown) The source radiation can be directed by the lens of Fig. 1, or by a concave reflector as in Fig. 8 (not shown). If the sensor of the bridge is removed and a voltage is applied to terminals A and D the system of Fig. I acts as a function generator, the function produced on lines 82, 86 depending on the shape of the member 46.