baber/WOPTO huggingface dataset:
Patent GB-1188719-A (GB)
Title: Digital-to-Analogue Converter
Inventor: HOFFMAN GEORGE RICHARD
IPC: G05F1/46
Filed: 1967-09-29
Abstract: 1,188,719. Digital/analog converters. NATIONAL RESEARCH DEVELOPMENT CORP. 21 Oct., 1968 [29 Sept., 1967], No. 44525/67. Heading G4H. Apparatus for applying an anlog signal dependent on a digital input signal to a load 11 includes a digital/analog converter 12 supplying an analog signal to the load and a comparator 16 comparing the output signal from the load with a further signal dependent on the digital input, the error signal from the comparator 16 being fed to the load. In the embodiment described the converter 12 supplies a current to the load via a transistor 13 and a further digital/analog converter 14 supplies a current of opposite polarity via transistor 15. The voltage across resistor R F  in series with the load is compared in comparator 16 with the output of a digital/analog voltage comparator an error signal being fed to the load via amplifier 18 and transistor 15 when they differ. The load may be the scan coil of an electron beam machine for forming patterns on a substrate.
Patent GB-1085599-A (GB)
Title: Improvements in or relating to artificial dentures
IPC: A61C13/00
Filed: 1965-10-21
Abstract: 1,085,599. Dentures. D. D. KERSTEN. Oct. 21, 1965, No. 44677/65. Heading A5R. Artificial dentures are made using a member which includes artificial teeth 12, an integral flexible flange 16, and an integral flexible web 18, or a second flange (40) (Figure 6, not shown), the member being of a nylon or polypropylene material: To make a denture, a layer of an acrylic or epoxy resin is spread over the surface of the parts 16 and 18 so that it enters keying holes in each tooth, the member is positioned in the mouth so that the resin assumes the shape of the mouth, and the resin is allowed to set. The parts 16 and 18 or the second flange are then removed, leaving the teeth 12 secured to the resin layer. Lines of weakening facilitate the removal of the parts, and a further layer of resin may be bonded over the first layer and shaped to the interior of the mouth. The member illustrated is suitable for an upper denture and a similar member (Figures 6, 7, not shown) having the second flange (40) in place of the web 18 is suitable for the lower denture.
Patent GB-1501250-A (GB)
Title: Scraper device for a belt conveyor
IPC: B65G45/16
Filed: 1976-10-21
Abstract: 1501250 Scraper for cleaning or discharging a conveyer belt A C PRITCHARD 21 Oct 1976 [30 Oct 1975] 44818/75 Heading B8A A scraper blade 11 for either cleaning a conveyer belt 13, or for discharging load therefrom, is mounted at each end by a radius arm 16. The latter grips the blade 11 by means of U-shaped member 22, and bolts (25) and (26) (Fig. 2, not shown). At its other end, the arm 16 has a square cross-section shank 19, mounted within a square cross-section tubular housing 14, which is rigid with an adjustment lever 21. There are resilient inserts 19 which resist relative movement between the arm 16 and the lever 21. By means of the latter, the position of the blade 11 may be adjusted relative to the belt.
Patent GB-1451458-A (GB)
Title: Connection of members
IPC: F16B7/04
Filed: 1973-09-25
Abstract: 1451458 Air conditioning unit housings H RICKENBACH 25 Sept 1973 [25 Sept 1972] 44945/73 Heading F4V [Also in Division F2] A housing for air conditioning apparatus comprises side, base and end frames 1, 2, 3 each formed of four mitred profile members 4, the profile members each having a web 5, a right angle flange 6 and a 45 degree inclined flange 7, the frames being made up and assembled such that the flanges 6 and 7 project into the interior of the housing and the flanges 7 of adjacent frames abut as shown, the abutting flanges 7 being subsequently secured by bolts 8, spring clamps 11 or welding (not shown).
Patent GB-1380487-A (GB)
Title: Variable speed transmission gear
IPC: F16H9/16
Filed: 1972-09-29
Abstract: 1380487 Expanding wheel gear PLATT INTERNATIONAL Ltd 28 Sept 1973 [29 Sept 1972] 45133/72 Heading F2D In a steplessly variable transmission of the kind in which a belt or chain 23 coacts with a pair of expanding pulleys 12, 16 which are simultaneously adjustable in opposite sense by screw means 28 engaging the ends of levers 19, 20 fulcrummed at 21, 22, and in which the belt or chain is tensioned by application to a tensioning shaft 32 of a torque which, through oppositehanded screw threads 33, 34, urges the fulcrum members towards each other, the torque applying means comprises a boss 38 fixed to the shaft 32, a ratchet wheel 39 freely rotatable on the boss, a retractable pawl 43, and a torque applying spring 40 anchored at its outer end to a pin 41 on the ratchet wheel and at its inner end 'to the boss. To release the spring so that the shaft 32 may be turned by hand to slacken the belt or chain and facilitate its removal a hand tool to control the turning of the ratchet wheel is inserted in a radial slot 47 and the pawl is retracted. The hand tool may also be used to turn the ratchet wheel to re-tension the spring after re-engagement of the pawl. A cam 49 rotatable with the ratchet wheel operates a plunger which indicates the amount of wear that has been taken up by the tensioner.
Patent GB-1304728-A (GB)
Inventor: HARA H
IPC: H01L27/02
Filed: 1970-09-23
Abstract: 1304728 Semi-conductor devices TOKYO SHIBAURA ELECTRIC CO Ltd 23 Sept 1970 [24 Sept 1969 (2) 14 Jan 1970] 45232/70 Heading HIK A semi-conductor device comprises two oomplementary IGFETs 81 82 and a bipolar transistor 83 formed in a common substrate, the emitter of the transistor being electrically connected to the gate electrodes of the IGFETs, the transistor including an auxiliary region 100, of the same conductivity type as, but of higher dopant concentration than, the base region 93 formed in the collector region, i.e. the common substrate forming the collector region, and extending into the base region. The transistor is said to protect the gate insulation of the IGFETs, by avalanche breakdown of the transistor at a voltage below which gate insulation breakdown would occur. The auxiliary region reduces this breakdown voltage to a suitable value. In a further embodiment a second auxiliary region of the same conductivity type as, but of higher dopant concentration than, the substrate is located in the substrate adjacent the region 100, but spaced therefrom to further decrease the transistor breakdown voltage. In this latter embodiment the emitter electrode may be in two parts, which results in the emitter region also acting as a resistor. In alternative embodiments the emitter region may be in two separated parts, each with electrode sections, only one of which sections is connected to the gate electrodes. Reference has been directed by the Comptroller to Specification 1,171,874.
Patent GB-1026744-A (GB)
Title: Automatic locking controls
IPC: B63B19/00
Filed: 1962-08-24
Abstract: 1,026,744. Pressure-resisting doors. WILMOT CASTLE CO. Aug. 24, 1962 [Sept. 21, 1961; Dec. 8, 1961], No. 45325/65. Divided out of 1,026,741. 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-1267710-A (GB)
Title: Electrical connection, and method of producing the same
Inventor: DIETRICH BERNHARD
IPC: H01R12/67
Filed: 1969-09-16
Abstract: 1,267,710. Direct connections. SCHALTBAU G.m.b.H. 16 Sept., 1969 [21 Sept., 1968], No. 45549/69. Heading H2E. A solderless electrical connection to a contact pin 7, particularly among pins which are close together, is established by impaling a flat strip electrical conductor 2 on the pin. The conductor may have insulation 3. The pin is tapered and may be of circular, square or polygonal crosssection with a point portion of larger angle of taper. When the pin is circular a corrugation 8 may be formed round it by the applying tool. The connection may be improved by welding by passing a current through the pin or with a laser beam.
Patent GB-1481981-A (GB)
Title: Camera tubes
IPC: H01J29/45
Filed: 1974-10-24
Abstract: 1481981 Image pick-up tube PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 24 Oct 1974 [27 Oct 1973] 46016/74 Heading H1D A camera tube target 9 scanned on one side by electron beam 20 and exposed on the other to a pattern of e.m. or corpuscular radiation 24 comprises a silicon layer 21, preferably etched away in its central region and carrying a preferably vapour deposited intrinsic vitreous layer 22, comprising at least one chalcogen (S, Se, Te) and at least one group IIIb element (B, Al, Ga, In, Tl). With the target up to 30 V positive relative to the tube cathode, electron scanning charges layer 22 to cathode potential, the charge leaking subsequently in illuminated areas through the reversed-biased rectifying junction 23, to be replaced in the next scan. Charge leakage current provides the signal voltage across A-B. Preferred composition of layer 22 on low-ohmic n-type Si is 48 At percent Ga, 52% Se, with part of Ga replaceable by In or Al, part of Se by S or Te. Heat treating to 400-450‹ C, during tube evacuation improves sensitivity, lag, after image and secondary emission. A thin outer layer of Sb 2 S 3  may also be applied to reduce secondary emission. In a first alternative embodiment, n-type Si layer 21, with n+ contact region surrounding mosaic of P<SP>+</SP> regions diffused through a SiO 2  perforated mask later removed, carries GaSe layer 22. In a second alternative embodiment (Fig. 3, not shown), suitable for irradiation by a high energy electron pattern, high-ohmic P-type Si layer with mosaic of diffused B-rich areas, after being etched thin on the irradiated side and doped with P on this side to form an N<SP>+</SP> layer, is covered on the scanned side with GaSe. In a third alternative embodiment (Fig. 4, not shown) a high-ohmic P-type Si layer is P doped over both faces, forming N<SP>+</SP> layers, the one on the scanned side being etched away to be replaced by GaSe with an outer film of Sb 2 S 3 , while an anti-reflection film is added to the illuminated side. A thin SiO 2  layer may separate the Si layer 21 from layer 22.
Patent GB-460549-A (GB)
Abstract: 460,549. Examining photographic transparencies. LEWIN, H. April 15, 1936, No. 10878. Convention date, April 25, 1935. [Class 98 (ii)] Photographic transparencies, e.g. Rontgenray photographs, are inspected under incident ultra-violet light against a background which fluoresces under the action of the ultra-violet light. The incident light is obtained by placing a Wood filter in front of a source rich in ultraviolet radiation, e.g. a mercury vapour lamp. A fluorescent screen is used at the rear of the film.
Patent GB-1402161-A (GB)
Title: Sewing machines
IPC: D05B65/00
Filed: 1972-10-06
Abstract: 1402161 Pneumatic thread control and cutting UNION SPECIAL MASCHINENFABRIK GmbH 6 Oct 1972 [9 Oct 1971] 46095/72 Heading D1G Air flow aligning thread with the cutting device of a sewing machine is controlled by two devices, one, a pedal operated switch 9, being controlled by the starting and stopping of the machine while the other is controlled by a photo resistor 21 responsive to the position of work being sewn. Resistor 21 is illuminated from a reflector when no work is behind the stitching position and transistors 22 and 23 are thereby switched on and off respectively. On engagement of the machine drive clutch switch 9 closes to supply a delay circuit 26. Transistor 27 now switches on to energise solenoid valve 14 to allow air to flow until the work edge passes beyond the stitching point to interrupt the illumination of resistor 21 to switch off transistor 22. Transistor 23 now conducts to remove the input to the gate 26. Transistor 27 is thereby switched off and valve 14 deenergised to stop the air flow, which cannot now be reestablished until the work has moved from under the needle and beyond the photo electric device. A further transistor 33 is fed from the same controlling supply as transistor 27 and controls the operation of cutter 34 which thus operates only at the beginning and end of a sewing process. It is stated that pneumatic members could replace the electrical members.
Patent GB-1189906-A (GB)
Title: Improvements in or relating to Packaging Machines
Inventor: GAUSMAN ALFRED PETER
IPC: B65B9/20
Filed: 1967-10-09
Abstract: 1,189,906. Packaging-machines. HAYSSEN MFG. CO. 9 Oct., 1967, No. 46124/67. Heading B8C. In a vertical form-and-fill type packaging machine in which sealed packages are formed successively from a single continuous web tubed about a filling pipe, a driving wheel has an eccentrically mounted cam roller coupled to a slotted yoke for vertically reciprocating the transverse sealing mechanism. A duplex machine may have a single drive mechanism. Material from two coaxially mounted rolls 70, Fig. 2, and (70<SP>1</SP>), Fig. 3 (not shown), is formed simultaneously into two separate tubes 98, 98<SP>1</SP>. Each sheet 72 of material is fed by a roller mechanism 66 to a pair of folding plates 36 and wrapped about a forming and filling cylinder 28. The tubes 98, 98<SP>1</SP> thus formed are sealed longitudinally by reciprocating sealers 40, filled with a product 94 from a hopper 22, and sealed and cut by mechanism 52 to form packages 97. The sealing mechanism 52, shafts 44 and slotted yoke 54 together constitute a carriage 55 and are moved vertically as a unit by drive means coinprising cam roller 58 which moves along slot 56 in yoke 54 and is mounted on and driven by a continuously rotating drive wheel 60. The extent of travel of the carriage 55 may be varied for various package lengths by adjusting a bolt to alter the eccentricity of cam roller 58. A lead counter-weight 172 is disposed on wheel 60 radially opposite to roller 58. The tubes 98, 981 are drawn downwards by sealing mechanism 52. Cutters 150 are driven by air pistons 152 to separate a formed package. Predetermined quantities of product 94 may be discharged into each tube, or continuous feeding may be used for some products, the sealing jaws then pressing the product clear of the seal area. The sealing jaws 146 are opened by an air piston 132 just before the end of the downstroke, and hence the tubes 98, 98<SP>1</SP> remain stationary and are longitudinally heat-sealed by electrical sealers 40, mounted on frame 38 which is movable about a hinga by an arm 42a, see also Fig. 5 (not shown). The web-feed mechanism 66 comprises a floating roller 82, Fig. 2, which is raised by the action of drawing off material 72 and so triggers a switch 88 causing a motor to drive roller 76 and deliver a predetermined length of material until the roller 82 falls again. In use, the drive may be continuous since roller 82 may not have time to fall before the next cycle begins. A photo-cell 101 may be arranged to detect a printed design on the material 72 and adjust the feed by causing premature opening of the jaws 146.
Patent GB-1524844-A (GB)
Title: Textile spindle mounting
IPC: D01H7/08
Filed: 1975-11-11
Abstract: 1524844 Spindle mounting LORD CORP 11 Nov 1975 [27 Nov 1974] 46480/75 Heading DID A spindle mounting comprises: a rigid sleeve attachable to a spindle and carrying a radially extending ring: an elastomeric annulus having portions secured to the end faces of the ring; a rigid washer parallel to the ring and secured to the annulus: and a holder surrounding the annulus; having an inwardly directed flange secured to the annulus opposite the washer, and outwardly directed mounting flanges; the washer lying at least partially beyond the flanges such that when the sleeve is attached to a spindle projecting through a ring-rail, and. the mounting flanges secured to the rail, the annulus is pre-compressed between the rail abutting washer and the inwardly directed flange. Sleeve 30, Fig. I, carrying ring 32 is clamped between ring 36 and washer 38 on spindle 10 which extends through rail 12. Elastomeric annulus 44 is secured, preferably bonded, to either ring face, to washer 46 and to flange 52 of holder 48 which has two diametrically opposed flanges 58 bolted to the rail. Washer 46, Fig. 3, lies partially beyond flanges 58 before the mounting is bolted to the rail. The mounting may lie above the rail. Sleeve 30 and ring 32 may be a unitary member. The sleeve, ring, washer and holder may be of a plastics material, e.g. nylon, and the annulus may be of natural or synthetic rubber which may be moulded in place.
Patent GB-1434517-A (GB)
Title: Triazolo-1,5-a-pyridine processes for its preparation and compositions incorporating it
IPC: C07D471/04
Filed: 1974-10-28
Abstract: 1434517 Triazolo[1,5-a]pyridine derivatives KYORIN SEIYAKU KK 28 Oct 1974 [30 Oct 1973] 46623/74 Heading C2C The invention comprises compounds of formula wherein X is halogen, arylsulphonyloxy or 4- diphenylmethyl-1-piperazinyl, and acid addition salts of the latter. In examples, the corresponding alcohol (X=OH) is reacted with POCl 3  or p-TsCl/pyridine to give, respectively, the chloride (X=Cl) or p-toluenesulphonate (X= p-TsO) either of which is then reacted with 1- diphenylmethylpiperazine to give the therapeutically active product (see below). Therapeutic compositions having anti-allergic activity comprise compounds of the above formula where X is 4-diphenylmethyl-1-piperazinyl, and may be administered orally, perlingually or parenterally.
Patent GB-1522516-A (GB)
Title: Process and arrangement for discharging the hold of a water-borne vessel
IPC: B65G53/30
Filed: 1975-11-12
Abstract: 1522516 Discharging by currents of liquid O & K ORENSTEIN & KOPPEL A G WERK LUBECK 12 Nov 1975 [3 Dec 1974] 46778/75 Heading B5E A dredger hold or other container 1 has a bottom 25 sloping towards a separate chamber 4 from which the formed slurry is discharged by a pump 12. The load 18 is formed into a slurry by water injected through shut off valves 19, 24 above and/or below and/or at the side. The flow to the chamber 4 is controlled by flap valves 5a. The density of the slurry can be controlled by admitting external water 6 through shut off means.
Patent GB-1200771-A (GB)
Title: Scissor-type linear actuator
IPC: B66F7/08
Filed: 1967-10-13
Abstract: 1,200,771. Load-handling machines. STANDARD MFG. CO. Inc. 13 Oct., 1967 [24 Oct., 1966], No. 46810/67. Heading B8H. A dual scissor lift device, Figs. 1 to 4, comprises a base 12, first scissors 16, second scissors 18, double scissor cams 20, 22 and a linear actuator 24 comprising a cylinder 150 and rod 152. The first scissors 16 comprise inner arms 44, 46 and outer arms 48, 50. Arms 44, 48 are connected by a pivot-pin 52, arms 46, 50 by a pivot-pin 54. The first scissors 16 are anchored to the base 12 by an arc compensating linkage comprising lever arms 64, 66 pivoted to side members 26, 28 respectively by pins 68, 70 and to the arms 48, 50 by pivot-pins 72, 74, respectively. The second scissors 18 comprise inner arms 76, 78 and outer arms 80, 82. The following description refers only to the side of the device shown in Fig. 1, it being understood that the other side is similarly constructed. The lower end of arms 44, 48 are mounted respectively on rollers 56, 60 running on bearing surfaces 34, 36 and under bearing surfaces 38, 40. The upper end of arm 80 is mounted on a roller 96 running between bearing surfaces 106, 110 while the upper end of arm 76 is pivoted at 92 to a lift table 14. The first and second scissors are pivoted together by pins 84, 88. From the collapsed position of Fig. 2 the table 14 is raised by introducing fluid under pressure into the cylinder 150 to retract the rod 152. Cam-follower rollers 158, 162, 170, 174 respectively engage and exert a force on raising cam surfaces 138, 130, 114, 118. These forces are directed perpendicularly to the respective camming surfaces and initially the major component of the force, substantially the entire force tends to spread each scissor cam means, e.g. cam surfaces 138, 130, and exert a torque on the respective arms 44 and 80 tending to extend the scissors. As the scissor arms extend the cam-follower rollers move closer to the pins 84, 88. This progressively decreases the effective lever arm of the forces acting on the cam surfaces and the force component and thereby decreases the torque acting on the arms about the pins 84, 88. On the other hand the horizontal component of the forces acting on the cam surfaces initially acts through a very short effective lever arm about pins 52, 81 but as the scissors extend this lever arm progressively increases. The force required to move the lift table from its lowest position, Fig. 2, to its maximum position, Fig. 1, remains substantially constant and fluid introduced to the cylinder 150 at a constant pressure and rate will result in a substantially constant rate of movement of the table 14. Any rate profile desired can be attained by the proper curvature of the various cam surfaces. Fig. 5 shows an embodiment comprising single scissors 204 while Fig. 7 shows an embodiment comprising four cascaded scissors 306, 307, 308, 309.
Patent GB-1504650-A (GB)
Title: Thermal power plant with oxygen-fed compressed-gas generator
IPC: F02C3/28
Filed: 1976-11-11
Abstract: 1504650 Turbine power plant BBC BROWN BOVERI & CO Ltd 11 Nov 1976 [13 Nov 1975] 46951/76 Heading F1G In a turbine power plant part of the air compressed by compressor 1 is fed via line 2 to the burner 3 of combustion chamber 4 and the remainder flows via branch 10 to an oxygen producer 13 which supplies oxygen via line 14 to a combustible gas producer 15 receiving coal or oil fuel at 16. The combustible gas flows via lines 17, 5 to be burnt with the compressed air in combustion chamber 4, the products from the latter driving a gas turbine 7 powering compressor 1 and electric generator 8. The nitrogen removed from the air in oxygen producer 13 flows via line 18 and is added to the working fluid before, at, or after combustion chamber 4. The nitrogen may alternatively be used to cool the latter or flow via line 19 to cool the turbine stators. An additional charging set 11, 12 may be provided. In a modification, Fig. 2 (not shown), the combustion chamber heats a boiler supplying a steam turbine (24) driving an electric generator (25).
Patent GB-1403049-A (GB)
Title: Method of and apparatus for positioning joint members in concrete
IPC: E01C23/04
Filed: 1972-10-11
Abstract: 1403049 Concrete paving JOHN LAING & SON Ltd 26 Sept 1973 [11 Oct 1972] 46991/ 72 Heading E1G A method of positioning dowel bars in concrete during slipform paving comprises anchoring one end of a length 29 of filamentary material (metal or plastics wire or strip), tensioning said filamentary material and inserting the filamentary material together with dowel bars attached thereto at spaced intervals into a bed of wet concrete. The filamentary material passes from a storage drum past guide wheels 30 and 31 and through tensioning means 32 to an insertion disc 19 and then extends rearwardly through the concrete to an end anchorage. The dowel bars are stored in hopper 33 and carried therefrom by spaced upstanding supports 44 and 45 to move parallel with the filamentary material, being attached thereto with their axis parallel with the filamentary material by an operative on the slipform paver. Several parallel dowel bar insertion systems are transversely spaced on the slipfiorm paver which includes a screw spreader 11, spaced vibrators 12, a vibrating metering screed 13, primary and secondary oscillations 14 and 15 and a fine finisher 16. In a modification the dowel insertion means are on a separate wheeled platform with an insertion blade between the slipform paver and the platform. The dowel bars are secured to the filamentary material by binding wire, spot welding or crimping.