baber/WOPTO huggingface dataset:
Patent GB-620503-A (GB)
Title: Improvements in electrical calculating circuits
IPC: G06G7/184
Filed: 1946-08-15
Abstract: 620,503. Valve circuits. SCOLES, G. J., and METROPOLITAN-VICKERS ELECTRICAL CO., Ltd. Aug. 15, 1946, No. 24303. [Class 40 (vi)] In an integrating or differentiating circuit a voltage proportional to the deviation of the output from a pure integral or differential of the input is fed back to the input of the circuit in such a sense as to offset the error. The Figure shows an integrating circuit including a network made up of a resistor R1 and the input capacitance of a Miller valve V3 which forms the output circuit of an amplifying valve VI. The output of the circuit, which is taken from the anode of V3 is made a pure integral of the input by applying the grid potential of V3 to the grid of a valve V2 in series with V1. Valve V3 may be replaced by a capacitor, as in Fig. 4 (not shown), which may be interchanged with R1, to produce differentiation.
Patent GB-1021971-A (GB)
Title: Improvements in or relating to tool manufacture
IPC: B21D37/20
Filed: 1964-06-11
Abstract: 1,021,971. Making punches and dies. W. H. BURKHART. June 11, 1964 [June 11, 1963], No. 24372/64. Headings B3A and B3W. [Also in Division B4] A method of making a punch and die set comprises providing a strip of flexible material having a plurality of metal elements mounted on the strip in parallel relationship, each of the elements having a flat face adjacent the strip terminating in an edge extending parallel to the length of the strip, with the said edges contiguous and in the same plane, and with the elements formed to allow the strip to be bent to conform the edges to a predetermined curvature, positioning the strip and elements on a work surface with the faces conforming to the outline of the punch and die, providing a matrix to support the elements and removing the strip. The elements 12 and 12<SP>1</SP> are attached by adhesive to the flexible strip 10 which is equal in thickness to the required clearance between the punch and die. To form a punch and die set the strip is positioned on a plate 26 which has been engraved with guide lines 28 and 28<SP>1</SP>, and is held in place by magnets 30. Further magnets 32 are placed at the edges of the plate and a matrix of thermosetting resin or a low melting alloy is poured into the cavities inside and outside the strip. The assembly is removed from the plate, ground on both surfaces, the inner part which forms the punch is forced out of the outer part which forms the die and both parts are bolted and dowelled to support plates. The elements 12 and 12<SP>1</SP> may be triangular in cross-section as shown in Fig. 2 (not shown), or trapezoidal and have longitudinal grooves to provide a key for the matrix. The method may be used to form an electrode for use in electrical discharge machines.
Patent GB-857303-A (GB)
Title: Improvements in and relating to laminated core members having butt joints
Inventor: ALLEN PETER HENRY GAY
IPC: H01F27/245
Filed: 1958-07-29
Abstract: 857,303. Transformers and inductances. BRITISH THOMSON-HOUSTON CO. Ltd. July 27, 1959 [July 29, 1958], No. 24424/58. Class 38 (2). Magnetic cores composed of packets of cold rolled steel grain-orientated laminations P1, P2, P2<SP>1</SP>, P3, P4, P4<SP>1</SP>, P5 (Fig. 1), butt-jointed, and arranged with the butt-joints in adjacent packets off-set, are provided with thin copper shields SH1, SH2 which are said to inhibit transverse leakage of flux round the air gaps at BJ2, BJ4 and thus reduce core losses. The shields may be arranged at the corner joints of core or shell-type cores and may be rectangular or three-armed (Figs. 2 and 3, not shown), and the spaces between these shields may be filled with asbestos or resin impregnated paper to provide planar outer surfaces. Shields may be arranged within the core or within the packets of laminations, e.g. in contact with the inner walls of ventilating passages.
Patent GB-1425849-A (GB)
Title: Tapped praetersonic bulk delay line
IPC: H03H9/42
Filed: 1973-05-23
Abstract: 1425849 Electro-acoustic delay lines WESTINGHOUSE ELECTRIC CORP 23 May 1973 [28 June 1972] 24589/73 Heading H3V A praetersonic, i.e. high frequency ultrasonic, delay line comprises a transducer 12, Fig. 1, which launches bulk waves into one end of a piezoelectric body 10 having spaced output devices. As shown, these comprise tap loops 24, 26 extending round the body 10 and connected to terminals 28. Absorber material 14 may be provided at the other end of the body 10. Earthed strips (30, Fig. 2, not shown) may be provided on the body to electrically shield the loops 24, 26. With a plurality of variablyspaced taps a coded delay line may be provided. In the modification of Fig. 3, a piezoelectric layer 32, e.g. of LiNbO 3 , is provided on a substrate 34, e.g. of fused quartz, having an earthed metallized surface 36. The output devices are interdigitated electrode pairs 40, 42. In a further modification, (Fig. 4, not shown) layers of non-piezoelectric material (50, 52), such as ruby, sapphire or silicon, are provided on opposite surfaces of a fused quartz block and then layers of piezoelectric material (51, 53) are deposited. Bulk waves launched into the non- piezoelectric layers by respective transducers 58, 60 are coupled into the piezoelectric layers which have as output devices spaced strips 62 thereon. Interdigitated electrodes (Fig. 5, not shown) which may be used as an output device, have fingers which are closer together at one end than the other so that the delay time increases with frequency.
Patent GB-153442-A (GB)
Title: Improvements in and connected with sliding sash windows
IPC: E06B3/44
Filed: 1919-10-08
Abstract: 153,442. Dunk, H. Oct. 8, 1919. Sash-cord attachments; pocket pieces.-In sliding-sash windows, the ends of the sash cords k are looped and secured into recesses in the sash by screws m, these recesses not being normally visible. Pockets e are provided in the sides of the fixed frames.
Patent GB-811054-A (GB)
Title: Improvements in or relating to sieve frames
IPC: B01D25/176
Filed: 1957-08-06
Abstract: 811,054. Sieve fixings. MIAG MUEHLENBAU UND INDUSTRIE G.m.b.H. Aug 6, 1957 [Aug. 24, 19561. No. 24689/57. Class 117 [Also in Group XXVIII] Sieve fabric 2 particularly for air filters is stretched over a frame 1 by pushing a rod 3 into the hem or roll of the fabric and then pressing the rod up into a recess 7 in the frame by a screw-driver screw 4 or by springs 14, Fig. 6. Various other locations of the pressing up arrangements are shown,
Patent GB-1343834-A (GB)
Title: 4-3-alkyl-amino-2-pivaloyloxypropoxy-indole derivatives
IPC: C07D209/42
Filed: 1971-04-19
Abstract: 1343834 Derivatives of 4-hydroxyindole SANDOZ Ltd 19 April 1971 [24 March 1970] 24808/71 Heading C2C The invention comprises compounds of formula and their acid addition salts, wherein R 1  is C 1-6  alkyl, C 3-4  cycloalkyl or Ph(CH 2 ) 3 , and each of R 2 , R 3  is H or CH 3 , and processes for making them by (1) acylating the corresponding alcohol with pivalic acid anhydride in presence of pivalic acid, or (2) debenzylating the corresponding N-benzyl compound. Therapeutic compoisitions comprise compounds of the above formula which have a prolonged blocking effect on adrenergic betareceptors, and antiarrhythmic activity.
Patent GB-1454248-A (GB)
IPC: B24B13/00
Filed: 1975-06-10
Abstract: 1454248 Grinding lenses ESSILOR INTERNATIONAL (COMPAGNIE GENERALE D'- OPTIQUE) 10 June 1975 [20 June 1974] 24880/75 Heading B3D A machine of the copying type for grinding a concave surface on an article, such as a lens blank 12, comprises a pair of supports 8, 9 for a template 11 and the article and arranged for synchronous rotation about two parallel axes, a movable copying head 15 carrying a feeler 17, a rotatable grinding wheel 18 carried by the copying head, the feeler and grinding wheel having identical convex surfaces, the head being movable from a first position, in which the centres of symmetry of the feeler and grinding wheel are located on the axes of rotation of the supports, to a second position in which the centres are spaced from the axes, and guide means 33 for imparting a component of movement of rotation to the copying head as it moves from the first to the second position about an axis (C, Fig. 4, not shown) passing substantially through the centre of the mean sphere of the template concave surface, i.e. a sphere centred on the axis of the concave surface and having a radius of a value substantially equal to the mean value of the radii of curvature of the desired concave surface. The concave surface may be spherical, toroidal or aspherical, i.e. have a focal power varying as the axis of vision scans the lens, and the component of movement of the copying head about the axis ensures that the same portion 18a of the grinding wheel engages the article 12 during grinding of the surface 5 so that compensation for wear of the wheel is more easily obtained than if the portion engaging the surface changes. The supports 8, 9 for the template 11 and lens 12 are rotatable synchronously about vertical axes on a table 7 have guides 34 for a carriage 16 which is movable therealong by an hydraulic device 35 and supports an arm 27 of the copying head on a pivot 28. The arm has a roller 32 engaging the guide means 33 and, at its outer end, has a pivot 29 for a structure 22 on which is a motor 19 connected by a belt drive 25 to a spindle 21 carrying a spherical grinding wheel 18. A ball-and-socket joint 26 on the structure 22 carries the feeler 17 and can be clamped in an adjusted position. As the carriage is reciprocated by the device 35, the feeler 17 engages the template 11 to control the movement of the grinding wheel so as to form the surface 5 on the article, and the guide means 33 engages the roller 32 to effect pivoting of the arm 27 and copying head so that the same portion (18a) of the grinding wheel remains in engagement with the surface. An hydraulic device is provided between the arm 27 and structure 22 to effect raising of the copying head when fitting a new lens blank 12 on the support 9 and removal of a ground lens blank. In another embodiment, the axis passing through the means sphere is not virtual but consists of a shaft supported from the working table. The machine may be used for making convex surfaces.
Patent GB-1175494-A (GB)
Title: Silo Construction
Inventor: MORIARITY MERTON THOMAS
IPC: E04H7/28
Filed: 1968-05-24
Abstract: 1,175,494. A multi-storey silo. M. T. MORIARITY. 24 May, 1968, No. 24987/68. Heading B8S. A multi-storey silo (Fig. 4) (plain view) is made up of two kinds of units, the open ended box unit 2 and the panel 4. These two units are combined as shown by means of bolts 87 to form a multiple hopper of any required dimension. Footing, Fig. 3.-The base of the silo is formed as shown with three sections each having respective discharges 120, 124 through which material descends to channel 106 from which material is discharged mechanically. The footing is adapted to receive the corresponding box sections and panels thereupon to create a set of silos of desired width, breadth and height. As shown at 119 the intersurfaces are stepped to facilitate the erection of the silo unit upon the footing shown.
Patent GB-437841-A (GB)
Title: Improvements in and relating to cases for watch and clock movements
IPC: G04B37/08
Filed: 1934-08-30
Abstract: 437,841. Clocks and watches. BRAVINGTONS, Ltd., and NEALE, H. A., 298, Pentonville Road, London. Aug. 30, 1934, No. 25006. [Class 139] A dust-proof casing for a watch or clock movement 4 fits within an outer case 16 and comprises a box-like member 5 for enclosing the movement, provided with a lid 10 which has a stepped portion to fit within the opening of the box-like member, one side of the latter having a winding-stem aperture 8 whilst the back of part 5 or the lid 10 has a hand-arbor aperture 11. Aperture 8 has a pendant 9 for the winding stem. Dustproof packings may be provided for the apertures 8 and 11, and the edge of lid 10 may be packed with grease. A separate dial may be provided, but preferably the dial is painted or enamelled directly upon the box 5 or the lid 10. The movement 4 is held by screws 6 and 7.
Patent GB-641816-A (GB)
Title: Improvements in and relating to the preservation of soft roes of fish
IPC: A23L17/30
Filed: 1946-11-26
Abstract: Oil from soft fish roe is recovered by extracting with a solvent, e.g. acetone, and distilling the mixture of acetone, water and oil.ALSO:Soft fish roe is preserved by defatting and dehydrating by treating the roe which may be in strips with a solvent, e.g. acetone, to remove both the water and oil and subsequently removing the roe from the solvent, e.g., by draining.  The drained roe is dried by heating preferably in vacuo to a temperature less than 75 DEG C so that the hormonal properties of the roe are not destroyed, and may be crushed and sifted.  The removed mixture of acetone, water and oil is distilled, the acetone recovered and the oil separated from the water and recovered.  Nucleic acid may be extracted from the preserved fish roe by conventional treatment.
Patent GB-434242-A (GB)
Title: Improvements in and relating to superchargers for internal combustion engines
IPC: F02B33/00
Filed: 1934-08-31
Abstract: 434,242. Centrifugal pumps. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwych, London. Aug. 31, 1934, No. 25151. Convention date, Aug. 31, 1933. [Class 7 (ii)] [See also Group XXVI] A two-stage centrifugal compressor is mounted with the inlet 20 nearest to the engine casing 10. The impellers 33, 54 of the low and high pressure stages are mounted back to back separated by the casing wall 15. From the two scrollshaped discharge chambers 21 the air passes to a cooler 37 and thence through a carburetter, if used, to the high stage inlet 48. The impellers are mounted on a hollow shaft surrounding an extension of the crank-shaft, and driven therefrom through spur-gearing and a friction coupling 67. The gear casing is integral with the inlet casing 48 from which the carburetter and cooler are supported. The inlet valve 26 to the low-stage and the throttle valve 51 from the carburetter are interconnected by the linkwork shown in Fig. 4, so that by moving the lever 88 the valve 51 alone is first opened until the pin 83 reaches the end of a slot 82. Both valves 51, 26 are then operated ; owing to a stop 92 and slotted connection 93, the movement of the valve 26 is continued after valve 51 is fully opened. In its closed position, perforations 29 in the valve 26 pass sufficient air for " idling," and cooling the impeller 33.
Patent GB-187428-A (GB)
Title: Improved screw action apparatus for opening and closing fanlights, casement windows, and such like
IPC: E05F11/34
Filed: 1921-09-23
Abstract: 187,428. Schonfield, W. Sept. 23, 1921. Fan-light, roof-light and pivoted - window opening and closing apparatus. - A telescopic screw-actuated device which subsequently retains the windows &c. in their adjusted positions, of the type in which a rod a is rotated in any known manner in the screwed mouth c<4> cf a sheath c pivoted to the window, has the inner end of the rod a provided with a collar f fitting snugly in the bore of the sheath so as to retain the rod axially aligned. The collar is fixed to the rod by a set-screw g, which is fixed by a tool passing through a hole c<7> in the sheath.
Patent GB-1213545-A (GB)
Title: Reflector flourescent lamp
IPC: H01J61/35
Filed: 1968-05-27
Abstract: 1,213,545. Luminescent materials and uses thereof. SYLVANIA ELECTRIC PRODUCTS Inc. 27 May, 1968 [5 June, 1967], No. 25270/68. Heading C4S. [Also in Division H1] A discharge lamp has a coating 6 of activated ZrO 2  which reflects visible light and fluoresces under U.V. light of below 3100 Š on part only of the inside surface of the light-transmitting envelope 2, and a further coating 7 of fluorescent material over the first-mentioned coating. The ZrO 2  is preferably activated by firing at a temperature of 2000‹ F. or above in the presence of a trace of Ti. The coating 7 may be extended to cover the internal surface of the aperture portion 8 of the envelope 2 (Fig. 3, not shown).
Patent GB-847919-A (GB)
Title: An improved precision potentiometer
Inventor: CHILTON JOHN MOORHOUSE
IPC: H01C10/32
Filed: 1957-08-10
Abstract: 847,919. Electric resistances. AVERYS Ltd., [formerly AVERY Ltd., W. & T.]. 1. Aug. 5, 1958 [Aug. 10, 1957], No. 25312/57. Class 37 A rotary type potentiometer is characterized in that the resistance element takes the form of a single complete helical turn of resistance wire mounted on a former and engaged by the spring biased contact finger of the wiper. The circumferential edge of an insulated annular former 12 is provided with a helical groove extending over a single complete turn plus two overlapping sections, and into which a resistance wire 14 of a precious metal alloy e.g. silver/palladium alloy is wound. The outer segments of the overlapping sections of the wire V are removed so that the wiper 28 does not short across the resistance wire, and a cam shoulder 29 is provided to lift the wiper 28 clear of the gap G. The wiper is carried on a metal torsion ribbon 27 mounted on a bracket 24 attached to the block 18 by screws 25. The holes 26 for these screws are slotted to allow radial adjustment of the bracket, and to facilitate the adjustment a screw 25a is provided with an eccentric head located in a slot 26a so that rotation of the screwhead displaces the bracket radially. The block 18 is attached to the drive spindle mounted in antifriction bearings and may be rotated through a full 360 degrees. An electrical connection to the wiper is made by a light brush in the form of a resilient gold alloy wire 20 which engages with a metal collector ring 19 electrically connected through a plate and a wire to bracket 24. According to the Provisional Specification the potentiometer has a single complete turn wound about, but insulated from, a metal drum, with the ends of the wire held in contact blocks located one behind the other in the same axial plane of the potentiometer body.. The wiper arm is carried on a spindle couple to the weighing machine of which the potentiometer forms part, and is not supported in bearings in the potentiometer body. Specification 847,917 is referred to.
Patent GB-150724-A (GB)
Title: An improved grip suitable for application to all kinds of articles
IPC: F16B7/02
Filed: 1920-09-02
Abstract: 150,724. Rousseau et Cie, C. Aug. 25, 1919, [Convention date]. Void [Published under Sect. 91 of the Act]. Clamps, screw and cone.- In a device for fastening telescopic supports &c., a hollow cylinder 2 with a conical head and longitudinal slits 3, which give it elasticity, is forced into a correspondingly-shaped chamber in the casing 1 by screwing up a cap 4. The casing 1 is fixed on a hollow pillar supported on a stand, and a rod 7, supporting a bracket or the like, passes through the cylinder 2 into the pillar. The height of the bracket is adjusted by raising or lowering the rod 7 and securing it in position by forcing the member 2 into the conical chamber of the casing 1, causing it to grip the rod 7.
Patent GB-698446-A (GB)
Title: Improvements in infinitely variable change speed gears
IPC: F16H15/42
Filed: 1951-10-30
Abstract: 698,446. Variable-speed gearing. KOWALSKI, H., and STROTER, H. Oct. 30, 1951 [Aug. 4, 1949], No. 25388/51. Class 80 (ii). In a stepless variable change speed gear having pairs of expanding pulleys 27, 28, 38, 39, 43, 44, 51, 52 connected by transmission members 34, 48, the distance of the intermediate shaft 41 from parallel driving and driven shafts 22, 58, and thus the surface pressure on the pulley faces, is varied automatically in accordance with the load of the driven shaft. As shown in Fig. 4 the pulleys 38, 39, 43, 44, are keyed to the intermediate shaft 41 mounted in arms 64, 65, pivoted on a shaft 66, and the pulleys 27, 28, 51, 52, are keyed to the driving, and driven shafts 22, 58 respectively. Whentransmitting power the intermediate shaft tends to move from the full line position, Fig. 3, towards the dotted. line position. The transmission ratio may be varied by means of a pinion and rack 69, 70, acting on a sliding bush 33 carrying, pulley halves 28, 51. The transmission members 34, 48, may be friction rings, V-belts, chains or the like. In a modification a single pair of pulleys is used and the drive is taken from the intermediate shaft 41 to a shaft coaxial with the shaft 66 by chain gearing.
Patent GB-869139-A (GB)
Title: Method and apparatus for the production of filaments of glass or like thermoplastic materials
IPC: D02G3/18
Filed: 1957-08-12
Abstract: 869,139. Glass filament production. SCHULLER, W. Aug. 12, 1957 [April 17, 1957], No. 25449/57. Class 56. In the production of a strand c of filaments a of glass or like thermoplastic materials in which the strand c is drawn at an angle to the vertical plane through the discharge position of the furnace, when a filament a breaks the drop of material g entraining a new filament d is permitted to fall vertically and the filament is then caused to move laterally as by a rod 4 and guide 5 so as to be received within the strand c. As shown in Figs. 1, 3, the drop g falls out to an inclined shoot 1 from which it is passed to a guide drum 2 and/or a spinning drum 3, the drop g being struck off. The filament d is then drawn out to the required thickness, when a guide 5 on a rod 4 is rotated from the position of Fig. 1 to grip the filament and lift it from the shoot 1, the rod 4 then moving laterally to the position of Fig. 3, when the filament is drawn into the strand c, the filament on the drum 3 being cut off by a cutting device 6. When a single drum 3 is used, this may be set at an angle to the horizontal so that the filament d tends to run up towards the strand c. A conveyer belt may also be provided to move the filament d laterally for a short distance, when it is picked up by the guide 5 as before, so that the drop g cannot damage the oil cloth which lines the guide 5 which is made of absorptive material such as felt. The conveyer, also of felt lined with oil cloth, runs at a slow speed and the guide 5 and rod 4 at a high speed, both running continuously so that filaments are re-positioned automatically. Provision may also be made to return the torn end of the old filament to the strand, as by air suction, which may be only from the draining of the fanned out filaments or additionally by a suction pipe to be switched on as required, the filaments preferably being sprayed by a binding agent to assist the joining in of the old filament.