baber/WOPTO huggingface dataset:
Patent GB-1414787-A (GB)
Title: Alternating current amplifying arrangements
IPC: H03F1/32
Filed: 1972-07-22
Abstract: 1414787 Amplifying circuits MARCONI CO Ltd 18 May 1973 [22 July 1972] 34385/72 Heading H3W An A.C. amplifying arrangement includes an A.C. amplifier 2, the input channel to which is provided with the parallel combination of a non-linear device 4 having substantially the same distortion charactersitic as the amplifier 2, and a delay retwork 5 having substantially the same delay time as the non-linear device 4, whereby in operation the parallel combination provides an output having distortion substantially equal to but opposite in character to that produced by the amplifier 2. In the embodiment, amplifier 2 is a travelling wave tube, the input at terminal 1 being divided by power splitting coupler 7 between a low power amplifier 4 and a passive delay line 5 having twice the output level of the amplifier 4, so that by subtraction of the outputs in circuit 6, which may be a magic-Tee hybrid coupler, the desired distortion characteristic is obtained (Figs. 2(a)-2(c), not shown). Alternatively, the delay line 5 may be replaced by an amplifier similar to amplifier 4, run at a low level so as to give little distortion, the dividing and combining networks 7, 6 being of such unequal ratio as to give the desired distorted output.
Patent GB-619101-A (GB)
Title: Improvements in and relating to spring nuts
IPC: F16B37/02
Filed: 1946-11-20
Abstract: 619,101. Locking nuts. UNITED - CARR FASTENER CORPORATION. Nov. 20, 1946, No. 34403. Convention date, May 28, 1942. [Class 89 (i)] Resilient sheet metal nuts with embossed edges 11, separated by radial slots 7, and formed to engage the screw thread, have the ends of the slots extended by portions 9 preferably parallel to the sides of the nut. The corners of-the nut have down-turned points 17 that assist in preventing rotation of the nut and permit the body of the nut to flex during final tightening of the screw by rotation, the initial application being by axial pressure only. The nut may be hexagonal or circular and more than two slots 7 may be provided. Specification 538,503 is referred to.
Patent GB-1267306-A (GB)
Title: Improvements in and relating to copying and binding machines
IPC: G03B27/02
Filed: 1970-07-16
Abstract: 1,267,306. Sheet feeding apparatus. RICOH K.K. 16 July, 1970 [30 Aug., 1969], No. 34417/70. Heading B8R. An original 8 and a photosensitive sheet 9 are fed in contact past an exposure device 11; the original exits via path I and the sheet 9 is fed past a developing device 12 and then passes along a path IIa, III, or IV selected by adjusting a guide plate (not shown). If path IV is chosen sheet 9 merely exits from the apparatus. If path III, sheet 9 exits via a device 14 which applies an official seal. If path IIa, sheet 9 passes a folding device 13, a direction changing device 17, a stopper 18, which halts sheet 9 while copies of other originals are made and fed to 18, a stapler 19 which staples the stack together, a device 20 for punching an identification mark on the stack, and a sealing device 21. Devices 17-21 are operated by cams (not shown) controlled by sheet feed. Direction changing device 17 is the only part of the apparatus described in detail. Rollers 31-34 feed sheet 9 in direction IIb until the sheet actuates a -switch 63 which de-energizes a solenoid 57 causing rotation of shafts 41, 52. This moves rollers 31, 32 out of engagement with rollers 33, 34 and moves rollers 46, 47 into engagement with rollers 44, 45 to feed the sheet in direction IIc.
Patent GB-639031-A (GB)
Title: Machine for bevelling circular edges
IPC: B23Q1/48
Filed: 1947-12-29
Abstract: 639,031. Bevel grinding circular edges. FRETWELL, J. F. E., and FRETWELL, A. V. Dec. 29, 1947, No. 34429. [Class 60] [Also in Group XXII] A machine for bevelling the circular edge of a work-piece comprises a work-table, workengaging means associated with the work-table and provided with oppositely-disposed conical members adapted to be rotated and to act upon a work-piece, rotatable work-clamping means mounted in a carrier which is movable so as to permit a work-piece in the clamping means to be presented to the work-engaging means, said work-engaging means being adjustable to permit adjustment of its conical members relative to the work-clamping means and a work-piece therein, and means on the carrier interengaging with the work clamping means for effecting rotation thereof. An embodiment for trimming the edge of the wooden end of a cask comprises oppositely-disposed conical cutters 13, 13 with one or more removable blades 14 or with integral teeth. The cutters are spaced by a ring 15 mounted by a ball-bearing on the cutter spindle 12, the latter being carried by a frame 17 vertically adjustable in the standard 10 by a screw 19 operated by a hand wheel 25. The work-holder comprises a lower plate 34 supported by a thrust bearing on a baseplate 26, the plate 34 being provided with a worm-wheel 38 meshing with a worm 39 on a hand-operated spindle 40 mounted in the baseplate 26. An upper plate 32 is rotatably carried on the lower end of a screw-down spindle 31, having hand levers 31a, threading into a nutbox 29 carried by a channel-section cross-head 28 mounted on vertical end pillars 27 secured to the box plate 26. The latter is movable towards the cutter spindle, by a rack 42 and a hand-operated pinion 43, to bring the work to bear on the ring 15 ; when one edge has been bevelled by one cutter, the cutter spindle is moved vertically and the other edge is bevelled by the other cutter. Instead of cutters, tools for grinding, buffing, glazing or polishing may be employed.
Patent GB-448241-A (GB)
Title: Apparatus for hardening toothed wheels with spiral teeth
IPC: C21D9/32
Filed: 1934-12-03
Abstract: 448,241. Hardening gear wheels. I. G. FARBENINDUSTRIE AKT.-GES., Frankforton-Main, Germany. Dec. 3, 1934, No. 34698. Convention date, Dec. 2, 1933. [Class 72] In an apparatus for hardening gear-wheels with spiral teeth by means of a burner, the wheel and the burner are both separately driven and the burner is forced to pass along the surface of the tooth flank to be hardened by the action of a guide pulley applied to the said tooth, the distance between the mouthpiece of the burner and the surface of the flank of the tooth being always constant. The burner B is pivotally mounted at D on a guide F which is mounted on a spindle G. Vertically movable on the guide F is a bar H which carries at its outer end a pulley I which contacts with the teeth of the gear-wheel. The bar H slides by means of a pin K on a rail L which is pivotally mounted at M on the frame and adjustably secured in position by a screw N, according to the form of the teeth to be treated. The toothed wheel is driven by a motor R connected to a shaft P mounted on bearings Q, a friction or slipping clutch or coupling S being arranged between the shaft P and the gear-wheel A. The wheel A is mounted so that it is partially immersed in liquid O.
Patent GB-295176-A (GB)
Title: A device for sharpening the blades of safety and other razors
IPC: B24D15/08
Filed: 1927-12-22
Abstract: 295,176. Mendlik, A. Dec. 22, 1927. Stropping-apparatus.-A safety-razor blade p mounted in a holder n is slipped between gripping springs m carried by an outer casing k which is hand reciprocated along a double strop f guided by rollers c in an inner casing a. On change of direction the casing k moves the blade edges from bearing against, say, the left hand hollow of the strop to the right hand hollow by which time the left hand adjustable screw j bears against the flange of the inner casing a so that its direction is also reversed and the stropping direction of movement is also reversed. The screws j adjust the pressure of the blade against the strop. Rollers d serve to tighten the strop. The strop may have thin triangular parts r leaving thicker zig-zags s to perform the stropping. In a modification for sharpening single edge blades a single strop is used, the razor back being held in a holder by screwing up a wedge, the blade being laterally free to pivot to give uniform bearing on the strop and one of the tension rollers being internally threaded on a worm spindle to reciprocate the apparatus transversely during movement.
Patent GB-1327520-A (GB)
Title: Apparatus for collecting and withdrawing stacks of bags
IPC: B65H29/54
Filed: 1971-07-23
Abstract: 1327520 Delivering sheets WINDMOLLER & HOLSCHER 23 July 1971 [11 Aug 1970] 34732/71 Heading B8R Bags B, Fig. 1 and 4, are delivered from a bagmaking machine by a cylinder 1 having grippers 1<SP>1</SP> on to a table 4 comprising bars 4<SP>1</SP> engaging in grooves in the cylinder and are retained on the table, as they are released by the grippers 1<SP>1</SP>, by leaf springs 5, 6 urged towards the cylinder. When a stack St contains a predetermined number of sheets resting on the table and on jaws 10 of a gripping unit 2 carried on endless chains 12, the jaws 10 being disposed in gaps between the bars 4<SP>1</SP> and springs 5 2  a photoelectric device causes in succession (a) the jaws 10 to move in oblique direction d towards a jaw 9 of the unit 2 to grip the stack, (b) the jaws 9, 10 to move away from the cylinder, the springs 5 slipping over the bottom of the stack to engage bags forming a new stack on the table, and (c) the chain 12 to move the unit 2 with the stack upwards, thus releasing the spring 6, and bring a successive unit 2 into operative position.
Patent GB-490891-A (GB)
Title: Improvements relating to butter-shaping machines
IPC: A01J21/02
Filed: 1937-12-15
Abstract: A butter-shaping machine is provided with a worm having an enamelled or glazed thread to convey the butter and compress it into a mould.
Patent GB-1169319-A (GB)
Title: Output Adaptor for Electric Distribution Tracks
Inventor: HART DEREK JAMES
IPC: H02G5/04
Filed: 1968-07-22
Abstract: 1,169,319. Two-part couplings. BRITISH LIGHTING INDUSTRIES Ltd. 22 July, 1968, No. 34944/68. Heading H2E. [Also in Division H1] Power is tapped from bus-bars 14, 15 in a distribution track 10 by an adaptor 30 having contacts 44, 45 which may be moved to engage the bars 14, 15 when the adaptor 30 is clamped to the conduit by means of movable tongues 36, 37 engaging ledges 22, 23. The tongues 36, 37, of spring steel, are forced apart by a screw 33 passing through 36 and abutting 37. The contacts 44, 45 are mounted on arms 48, 49 which are biased together by a spring 54 and may be moved apart, scissor-like, by a cam 55, which may be operable by a cord 58, and for which locking notches 52<SP>1</SP> are provided. An earthing contact 64 and perhaps a fuse holder 63 are provided. So that the tapped voltage has the correct polarity, adaptor 30 has an asymmetrical cross-section similar to that of the track 10.
Patent GB-1130187-A (GB)
Title: Purge arrangement for absorption refrigeration systems
IPC: F25B43/00
Filed: 1967-07-31
Abstract: 1,130,187. Refrigerating. CARRIER CORP. 31 July, 1967 [30 Aug., 1966(2)], No. 35031/67. Heading F4H. An absorption refrigeration system includes a purge line 70 having its inlet end disposed in the condenser 11, a pump 56 for passing solution from the absorber 13 to the generator 10 and a conduit extending from the discharge side of the pump for discharging solution adjacent the outlet end of line 70 so as to draw non-condensibles and refrigerant from the condenser, the refrigerant being absorbed by the solution and the non-condensibles being passed to a storage chamber for subsequent discharge therefrom. As shown, solution is discharged from a conduit 79 into a chamber 80 to entrain non-condensibles and refrigerant from line 70, the mixture then passing through line 81 to a separator 84, which includes a check-valve 83. The solution and absorbed refrigerant are returned to the system through line 86 and non-condensibles pass through line 87 to a storage chamber 67. Non-condensibles are also drawn from the absorber through a second purge line 59 under the influence of solution discharged from a second conduit 60 into a chamber 61, the mixture passing to a second' separator 65 from which solution is returned to the system via line 63 andnon-condensibles pass to chamber 67 through line 66. Conduits 60, 79 are branched off from the solution return line 57, 58 upstream and downstream, respectively, of the liquid heat exchanger. Non-condensibles are discharged floor chamber 67 by closing valve 75 to prevent solution from returning to the system so that the pressure in the chamber rises, and then operates valve 78. The latter may be operated manually or automatically in response to pressure or solution level. In a modification (Fig. 1, not shown) elements 79-87 are omitted, line 70 communicates directly with chamber 67 and solution is discharged into the chamber from a line which communicates with line 60.
Patent GB-459683-A (GB)
Title: Improvements in or relating to illuminated signs
IPC: G09F13/26
Filed: 1935-12-18
Abstract: 459,683. Discharge lamps. BRITISH CELANESE, Ltd., 22, Hanover Square, London. Dec. 18, 1935, No. 35085. Convention date, Dec. 18, 1934. [Class 39 (i)] [See also Group XVIII] A sign comprises a block of artificial materlial containing a cellulose derivative, said block comprising two or more sections, at least one of which has formed on its surface a groove or grooves in which is or are disposed one or more electric discharge tubes constituting the sign matter. In the embodiment shown, the sign is built up of a number of blocks, each comprising sections 7, 8 formed with grooves 19, 20 to receive a discharge tube shaped as a character. The electrodes 10 of each tube are connected to plug and socket terminals 13, 12 adapted to engage corresponding socket and plug terminals on adjacent blocks. In a modification, grooves are formed in the section 7 only.
Patent GB-1158915-A (GB)
Title: Thermionic converter.
Inventor: BUSSE CLAUS-ADOLF
IPC: H01J45/00
Filed: 1966-08-05
Abstract: 1,158,915. Thermionic generators. EUROPEAN ATOMIC ENERGY COMMUNITY (EURATOM). 5 Aug., 1966 [20 Sept., 1965], No. 35190/66. Heading H1D. In a thermionic converter comprising an emitter 3 and a collector 5, a thermally and electrically insulating shield is disposed within a chamber of the converter between a portion of the emitter electrode remote from the emissive surface and a portion of the collector electrode, the shield serves to prevent a shortcircuit between the electrodes in this region and may also provide a heat shield for the insulator which spaces the emitter and collector electrodes. As shown, cylindrical tantalum emitter 3 with emissive layer 4 of tungsten is closed at its top end by a plug 11 and is connected at its lower end to a tantalum heat pipe 1 which has a series of rectangular longitudinal capillaries on its inside walls, the heat carrier being lead. Cylindrical collector 5, of Nb-1 Zr alloy, coaxially surrounds the emitter and is secured to heat pipe 2 of similar material. Heat pipe inner surface and collector outer surface have many capillaries and the heat carrier is caesium. Cover 16 seals the top of the collector and pipe 17 connects the interelectrode chamber to a caesium supply. The collector and heat pipe 2 are welded to base 14 which via sleeve 21 and flange 22 supports positive terminal 23. The negative terminal 20 is supported on flange 19 which also supports sleeve 25 to which ceramic alumina ring 24 is secured to close the interelectrode chamber. The thermally and electrically insulating shield in the form of a sleeve 27 of Al 2 O 3  is disposed between sleeves 25, 21. A further insulating heat shield 28 is disposed between, the emitter plug 11 and collector cover 16 and also serves as a centring member for the top of the emitter. In a further embodiment, Fig. 2, (not shown), the electrodes are parallel and planar and the desired interelectrode spacing is obtained by an annular niobium foil (46) of thickness equal to the electrode separation inserted in the main structural joint between halves of the converter, and the ceramic heat shield (45) in this embodiment is similarly placed to shield 27 in the Fig. 3, embodiment.
Patent GB-451580-A (GB)
Title: Improvements in or relating to sound absorbing structures
IPC: B64C1/40
Filed: 1934-12-07
Abstract: 451,580. Nonconducting coverings for sound. JOHNS -MANVILLE CORPORATION, 22, East 40th Street, New York, U.S.A. -(Assignees of Parkinson, J. S.) Dec. 7, 1934, No. 35198. Convention date, Dec. 12, 1933. [Class 64 (ii)] [See also Group X] A structure for absorbing or deadening sounds of low frequency, such as those emitted by aeroplane engines, comprises a framework 4 having a taut woven fabric 1 mounted on its outer face and coated so as to be impermeable to air, a backing 2 of sounddeadening material being attached to the inside of the fabric. The frame 4 may be secured to a base material 5 so as to form an air space 6, and may form part of the aeroplane structure. The facing material 1 may be aeroplane linen coated with dope so as to become taut. The material 2 may be hair or wool felt, and may cover the whole of the fabric 1 or only spaced areas thereof. It may be attached to the fabric 1 by sodium silicate, or a resinous material such as pontianak.
Patent GB-624381-A (GB)
Title: Improvements in or relating to couplings for securing together rod-like members, particularly tubular handrails in required relative positions
IPC: E04G7/22
Filed: 1946-11-29
Abstract: 624,381. Rod &c. couplings. HART, J., and QUADRANT TUBE CO., Ltd. Nov. 29, 1946, No. 35471. [Class 99(i)] A coupling for rod-like members such as tubular handrails 2 comprises two partcircular members 1, the abutting edges of which are connected or hinged together by interengaging L-shaped projections 3 and which are clamped on the handrails, e.g. by bolts 9 passing through lugs 8 or by hinged rings or locking catches. The members 1 may have extensions 5 to receive a cross-tube 6 secured by a screw 7. The corners of the projections 3 may be rounded.
Patent GB-469389-A (GB)
Title: Cartridge ejecting mechanism for automatic fire arms, and especially for maxim machine guns
IPC: F41A15/16
Filed: 1935-12-23
Abstract: 469,389. Automatic guns. PETERS, J. Dec. 23, 1935, No. 35546. [Class 92 (ii)] Relates to cartridge-ejection mechanism for automatic guns, particularly machine guns of the Maxim type described in Specification 336,327, [Class 92 (ii)], having cartridge-carrier guides 21 on the lock 1 and a fixed transporter 18 operating between the look cheeks for moving the cartridges downwardly in the guides. According to the invention, the last cartridge is ejected by the end 7a of a spring-controlled member 7 pivotally and slidably mounted on the front of the lock, the member being actuated by a fixed incline 22 which the lock engages only when there is an increased stroke due to less resistance when no cartridge is pulled out of the belt by the lock. During normal reciprocation of the lock, ejection of the case takes place past the spring stop 8 by the pressure of the following cartridge. The spring-controlled firing-pin 3 is retained in cocked position by a hand-sear 19 and an automatic-sear 6 both mounted on a common pivot 17.
Patent GB-387092-A (GB)
Title: Improvements in the manufacture and production of dyestuffs containing nitrogen
IPC: C09B43/00
Filed: 1931-12-23
Abstract: Nitrogenous dyes are made by treating aromatic compounds containing at least one nuclear amino group in aqueous media (neutral, acid or alkaline) with gases comprising oxygen under increased pressure and at elevated temperatures the said compounds being free from heavy metals in complex combination.  An oxygen transferring compound, e.g. manganese, vanadium, copper, cobalt or lead salts, may be present. Amines of the benzene, naphthalene, diphenyl, anthraquinone and dibenzanthrone series are specified.  When starting from water soluble amines soluble final products suitable as acid wool dyes are obtained, whereas insoluble amines give insoluble pigment dyes. Compounds containing vattable groups may be used as vat-dyes.  In examples the following products are heated in aqueous solution under pressure in presence of oxygen: (1) aniline hydrochloride, (2) aminoazobenzene and hydrochloric acid, (3) p-nitraniline and hydrochloric acid, (4) metanilic acid, (5) p-phenylenediamine sulphonic acid, (6) benzidine-o-disulphonic acid, (7) a - or b -naphthylamine hydrochloride, (8) 1 : 8-naphthylenediamine hydrochloride, (9) 2 : 6 : 8-naphthylamine disulphonic acid (sodium salt), (10) dimethylaniline hydrochloride, (11) 1 : 4- or 1 : 8-diaminoanthraquinone hydrochloride, (12) 1 : 5-diaminoanthraquinone hydrochloride in presence of vanadic acid, or 1 : 4 : 5 : 8-tetraminoanthraquinone in presence of a mixture of lead, cobalt and manganese naphthenates, (13) 2-aminoanthraquinone-3-sulphonic acid.
Patent GB-1271918-A (GB)
Title: Improvements in and relating to optical systems
IPC: G02B13/00
Filed: 1970-07-23
Abstract: 1,271,918. Lens systems. COMPAGNIE GENERALE D'ELECTRICITE. July 23, 1970 [July 28, 1969], No.35788/70. Heading G2J. A lens system comprises a first group of lenses including at least one converging lens and at least one diverging lens, and a second lens group including a concave-convex lens arranged with its aplanatic object point coinciding with the image of a point object at infinity given by the first group, the successive lenses being separated by a non- zero distance which is small in relation to the smallest focal length of the lenses. As shown, the first group 1 comprises two converging lenses 4 and 5, and diverging lens 6, and the second group 2 is the single lens 7. The system may comprise, in the second group, at least two concave-convex lenses, the first being arranged with its aplanatic object point coinciding with the image of a point object at infinity formed by the first group, and the or each subsequent concave-convex lens having its aplanatic object point coincident with the aplanatic image point of the preceding lens. The optical centres of at least some of the lenses may be provided with holes which extend along the optical axis wholly or partially through the lens. Optical data are given for the example shown.
Patent GB-506251-A (GB)
Title: Door check
IPC: E05C17/20
Filed: 1938-12-08
Abstract: 506,251. Door-stops. RAMSEY, A. R. J. (Detroit Harvester Co.) Dec. 8, 1938, No. 35834. [Class 66 (i)] A stop for vehicle &c. doors 15 comprises a rigid member 24 pivoted to the pillar 12 and projecting into a space 23 in the door. When the door is open as in Fig. 3, one side of the stop abuts on the pillar, the other side on a buffer 34 on the door, so that further opening of the door is resisted by a shearing stress in the stop.