baber/WOPTO huggingface dataset:
Patent GB-888974-A (GB)
Title: Steroids
IPC: C07J5/00
Filed: 1959-06-03
Abstract: 2,4 - Dibromo - 16a  - methyl - pregnane - 17a ,21 - diol - 3,11,20 - trione 21 - acylate is prepared by reacting 16a -methyl-pregnane-17a ,21-diol-3,11,20-trione with a brominating agent, e.g. bromine.  16a - Methyl - 1,4 - pregnadiene - 17a ,21 - diol - 3,11,20 - trione 21 - acylate is prepared by dehydrobrominating the above 2,4-dibromo compound, e.g. with a tertiary amine such as dimethylaniline or collidine, and optionally hydrolysing the 21-ester group to form the corresponding free 21-hydroxy compound.  The 21-ester group may be derived from acetic, propionic, butyric or benzoic acid.  Detailed examples are given.  Specification 877,086 is referred to.
Patent GB-1141103-A (GB)
Title: Semiconductor switching devices
IPC: H01L29/747
Filed: 1966-04-29
Abstract: 1,141,103. Semi-conductor devices. RADIO CORPORATION OF AMERICA. 29 April, 1966 [14 May, 1965], No. 19077/66. Heading H1K. A bi-directional gated switching device comprises a three layer PNP or NPN sandwich with at least two N(or P) zones formed as inclusions in the surface of one of the outer layers and a third N(P) zone similarly formed in the other outer layer. These zones are each provided with an electrode which is short circuited to the adjacent layer. Preferably the zones on the opposite surface cover areas which overlap only at their edges. In a typical case the two zones on one surface are concentric annuli separated by an etched groove while the third zone is a concentric circle (Fig. 1, not shown). Alternatively (Fig. 2, not shown) they are concentric circular and annular zones while the third zone is annular and is surrounded by a fourth concentric annular zone shorted to it. In another embodiment (Fig. 4, not shown) there are two zones in each surface in the form of parallel strips, those on one face separated by grooves and those on the other interconnected by an electrode layer. The preferred arrangement shown in plan in Fig. 6c, has N zones 91, 92 and a wedge-shaped P+zone of the form shown, with an isolating groove 94. The gate electrode extends over zones 92, 93 and the annular main current electrode over the part of the surface outside the groove. At the opposite face the N zone is of the form shown in Fig. 6a with the main current electrode extending over the entire face. Devices may be formed of germanium, silicon, alloys thereof, silicon carbide, or A III B v  compounds such as gallium arsenide and indium phosphide, by known diffusion and epitaxial techniques and the electrodes formed by vapour deposition of gold or aluminium.
Patent GB-410985-A (GB)
Title: Improvements relating to electric battery lamps
IPC: F21L4/00
Filed: 1933-07-05
Abstract: An electric battery lamp is provided with a casing made of insulating-material consisting of an artificial resin mixed with a quantity of fibrous material.  The casing may be moulded or pressed from a condensation product of formaldehyde and phenol and cresol, mixed with small pieces of textile or similar woven material.
Patent GB-290469-A (GB)
Title: Improvements relating to sound boxes particularly for gramophones
IPC: G11B3/46
Filed: 1927-07-19
Abstract: 290,469. Wright, A. F. J. July 19, 1927. Tool-arm mountings.-The stylus bar is mounted between pairs of balls, those on one side bearing against the sound-box casing and those on the other being pressed against the bar by springs. The spherical recesses on the bar to receive the balls are of greater diameter than the balls, which are arranged to restore the bar to a neutral position. Fig. 1 shows the bar b mounted between balls c in recesses in the soundbox casing d and balls g pressed by blade springs e adjusted by screws h, the balls g being arranged on opposite sides of the line through the balls c to produce a restoring effect. In a modification the bar is cranked upwardly towards a recess in the easing, and the lower balls are pressed upwardly by spiral springs bearing on adjustable cross-bars, this construction providing a restoring effect with the balls in line.
Patent GB-1442121-A (GB)
Title: Locking telescopic capsules
IPC: A61J3/07
Filed: 1973-10-23
Abstract: 1442121 Telescopic capsules ELI LILLY & CO 23 Oct 1973 [26 Oct 1972] 49172/73 Heading B8C A telescopic, e.g. pharmaceutical, capsule which may be locked in a first, partially closed position (see Fig. 11) and a second, fully closed position (see Figs. 9 and 10) comprises a cap 21 having a cross-section substantially as shown in Fig. 10 and which is provided with one or more "T-shaped" ridges 19, 17 which are inwardly directed and co-operate with the end portion 26 of the capsule body 22 of enlarged diameter in the fully closed position to "lock" the capsule. In the partially closed position, the end portion 26 of the capsule body is in frictional contact with the axial portion 17 of the T-shaped ridge, the frictional force being sufficient to hold the capsule parts together under normal circumstances. The body portion of the capsule is described as comprising 5 zones: (i) the inwardly tapering end zone 26, (ii) the ogee curved construction 27, (iii) the essentially cylindrical zone 28, (iv) an inwardly tapering section 29 and, (v) the closed end section 30.
Patent GB-1369166-A (GB)
Title: Heart-frequency meter
IPC: A61B8/02
Filed: 1973-04-19
Abstract: 1369166 Ultrasonic measurement of heart rate SIEMENS AG 19 April 1973 [19 April 1972] 19202/73 Heading H4D A heart-rate meter comprises an ultrasonic signal transmitter, a receiver for Doppler-shifted reflection signals from the heart, a filter for passing to a Doppler frequency extractor only those received signals having a frequency associated with one of the two types of heart pulsation movement which respectively comprise cardiac wall movement towards and away from the transmitter, and analysing circuits for deriving from Doppler signals supplied by the extractor a pulse train whose pulse repetition rate is a measure of the heart rate. The purpose of the filter is to simplify the Doppler signals to facilitate production of the pulse train. The filter described is a quartz crystal. When the meter is used for foetal heart monitoring, the signals are further filtered to eliminate components due to motion of the heart valves, the mother's heart, and of the foetus or mother. The analysing circuits of the embodiment described include, in series, an AGC amplifier, a low-pass filter with a 200 Hz cut-off, a rectifier and integrator for AM demodulation of the filtered signals and for rejecting any brief disturbing signals, a low-pass filter with a 3 Hz cut-off, a two-stage differentiator for removing amplitude-variation effects, a limiting amplifier, a Schmitt trigger, and a monostable circuit for providing the pulse train. This pulse train is converted to an analogue D.C. voltage which is metered and recorded. Signals from the Doppler frequency extractor are monitored aurally.
Patent GB-1195724-A (GB)
Title: Apparatus which can be used for tranferring labels from a stack or in printing
Inventor: THOMPSON JOHN KENNETH
IPC: B65H3/20
Filed: 1967-04-26
Abstract: 1,195,724. Printing-apparatus. J. K. THOMPSON. 28 March, 1968 [26 April, 1967], No. 19206/67. Heading B6C. [Also in Division B8] Apparatus for use in printing comprises an assembly rotatable about a first axis, and a head carried by the assembly and rotatable about a second axis, parallel to, but spaced from, the first axis, the head rotating in the opposite direction at n times the rotational speed of the assembly and having a curved face whose radius of curvature is such that the face describes a flat surface rolling movement at n equiangularly spaced locations about the first axis, liquid printing medium being picked up at one location and deposited at a subsequent location.
Patent GB-263422-A (GB)
Title: Improvements in washers for coal and the like
IPC: B03B5/24
Filed: 1926-08-03
Abstract: 263,422. Norton, B. Aug. 3, 1926. Jigs.-In a coal &c. washer, particularly one of the type in which air under pressure produces pulsations in the layer of material passing over the perforated plates of the washer box, there are combined in one metallic structure all the washing-compartments and also the end compartments in which the dirt and shale elevators operate, the lower parts having removable sections giving ready access to the worm conveyer at the base. Fig. 1 shows a washer consisting of five compartments, separated by partitions b, and covered plates d, e upon which the coal is washed. The coal and water enter by the trough f. Coal leaves by the trough g, and shale &c. at outlets h, k, with gates m, n, the shale passing down the side compartments formed by partitions l, and containing the bucket elevators, these compartments forming with the five washer compartments a structure adapted to be mounted in a frame p on brackets which leave the bottom of the structure unobstructed and readily accessible for repair. The lower ends of the end compartments consist of castings in which are the spindles t of the worms 5 and the lower bucket-conveyer wheels. They are bolted to flanges u on the lower edges of the casings of the washer; the middle section of the conveyer channel q is separately removable. To facilitate this removal, the upper parts of the bearings w, x are preferably on the casing of the washer, and the lower parts are on the castings r, q.
Patent GB-996241-A (GB)
Title: A process for preparing 1,2-disubstituted-3,5-dioxo-4-(gamma-oxobutyl)-pyrazolidines
IPC: G05B19/4103
Filed: 1961-05-29
Abstract: Compounds of the general formula <FORM:0996241/C2/1> (wherein R1 and R2 are the same or different and represent phenyl radicals optionally substituted by one or more substituents selected from C1- 4 alkyl and C1- 4 alkoxyl groups and halogen atoms) are prepared by condensing the corresponding 1,2 - disubstituted - 3,5 - dioxopyrazolidine or an alkali metal salt thereof with methyl vinyl ketone.  Specification 790,931 is referred to.  Reference has been directed by the Comptroller to Specification 781,439.
Patent GB-134381-A (GB)
Title: A Renewable Bottom for Coal Buckets and like Receptacles.
Inventor: HUNT EDWARD WILSON
IPC: F24B15/04
Filed: 1918-11-26
Abstract: 134,381. Hunt, E. W. Nov. 26, 1918. Coal scuttles.-A coal bucket &c. has a renewable bottom a cut from sheet steel or other metal, the edge being slit to form tongues b, which are turned up to form a flexible flange adapted to grip the inside of the bucket &c. A steel cross-bar c with turned-up ends in also provided, knife-edges on the ends being adapted to penetrate to a small extent into the walls of the bucket.
Patent GB-1095144-A (GB)
Title: Improvements in farinaceous compositions
Inventor: DALFSEN JAN VAN
IPC: A21D2/02
Filed: 1964-05-11
Abstract: Baking flours are improved by mixing therewith a small proportion of a non-oxidizing flour improver which is acid and comprises a sodium polyphosphate or pyrophosphate deposited on a finely divided carrier, which may have been prepared by forming a slurry in water of the improver and the carrier, and drying the slurry.  When sodium polyphosphate is employed, an acid compound, such as citric or lactic acid, is preferably also present. Carriers include flour, soya flour, whey powder, sugars, skimmed milk powder, milk powder, and calcium phosphate.  Fat soluble carry-through flavours or precursors may be sprayed over the carriers.
Patent GB-125898-A (GB)
Title: Anti-jump Device for Firearms.
Inventor: JOHNSTON MILLARD LORNE
IPC: F41A21/36
Filed: 1918-11-26
Abstract: 125,898. Johnston, M. L. Nov. 26, 1918. Recoil, modifying.-Consists of a muzzle attachment having a depending chamber beyond the muzzle, the action of the gases on the bottom of the chamber counteracting the tendency of the muzzle to jump upwards. In the construction shown in Figs. 1 and 4, the attachment is screwed to the barrel and has a depending chamber 1 closed at the bottom by a detachable hemispherical plate 12 and provided at the top and front with a slot 14 for the escape of gases and with an aperture 16 for the bullet. In a modification, Fig. 6, the attachment has a flared tube 20 extending in front of the chamber.
Patent GB-1131985-A (GB)
Title: Improvements in and relating to telescopic shock absorbers
Inventor: ANGERMANN ROLF
IPC: F16F9/38
Filed: 1966-05-03
Abstract: 1,131,985. Shock-absorbers. RENAKWERKE VEB. 3 May, 1966, No. 19490/66. Heading F2S. A resilient outer protective tube 4 of a telescopic shock absorber, which tube is initially open at both ends, is dismountably secured at one end, to a longitudinally extending-skirt portion of a rigid cap 3 fastened to the outer end of a piston rod 2, the tube 4 being easily removable so that the shock absorber 1 is accessible for repair purposes, and the other, lower end, of the tube being open and non- guided. As shown in Fig. 1 the protective tube 4 is secured to the cap 3 by means of a continuous, or interrupted, circumferential groove 5 and a continuous, or interrupted, flange 6. In a modification, Fig. 2 not shown, fixing of the outer tube is by means of indentations (7) on the outer tube which engage in corresponding recesses (8) in the cap (3). In an alternative arrangement, Fig. 3 not shown, the groove 5 is replaced by one, or more, axially-extending ribs (9) on the inner face of the tube. In a further modification, Fig. 4, not shown, a circlip (12) urges part of the tube into a continuous circumferential groove (11) in the cap.
Patent GB-516626-A (GB)
Title: Improvements relating to stroboscopes
IPC: G01P3/40
Filed: 1938-07-01
Abstract: 516,626. Stroboscopic apparatus. LIST, H. July. 1. 1938, No. 19501. Convention date, July 12, 1937. [Class 97 (i)] The shutter of a stroboscopic apparatus is rotatable at a continuously variable speed and has apertures arranged in separate groups each disposed in a ring around its axis of rotation and each group having a different number of apertures; and the viewing aperture is adjustable into register with any desired group. In the form shown, the shutter disc has four groups of apertures a, b, c, d consisting respectively of 1, 2, 4 and 8 slits, which may be made narrower in successive groups in accordance with the number of slits and their relative linear speed when rotating. The slits may have parallel edges, or may taper in a direction either away from or towards the centre of the disc. The shutter is trunnioned at 3 in a housing 1 having an aperture 7 on the object side, and a viewing eyepiece 10 which may be slid along an aperture 9 into register with any group of slits ; and rotation is imparted to it as by a radiallyadjustable friction wheel 5, which may be held against the disc by magnetic attraction, and may be driven by a spring or electric motor. Instead of a slotted disc, a glass disc may be used, .backed with opaque material 12 in which the slits are made ; or the shutter may comprise a disc provided with slits and a frictionally-driven disc mounted on the same shaft, provision being made in this case for reflecting rays from the object first between the discs then 'through the slits of the first disc to the eyepiece. In modifications, the shutter takes the form of a rotatable drum or core. Arcuate scales, one for each group of slits, are provided on the housing 1 round the axis 3, over which scales moves a pointer coupled to the means for adjusting the speed of rotation of the shutter.
Patent GB-465324-A (GB)
Title: Improvements in and relating to electrical plug and socket connectors
IPC: H01R13/648
Filed: 1936-07-14
Abstract: 465,324. Two-part couplings. CINCH MANUFACTURING CORPORATION. July 14, 1936, No. 19546. Convention date, Aug. 3, 1935. [Class 38 (i)] A plug coupling passing through a flat support or panel has each of the coupling- members enclosed in an attached casing or shield, the casings being independently secured to opposite sides of the panel. The socket member comprises insulating plates 17, 18 mounted on a metal cup 12 having a flange 13 by which it is bolted at 16 to the panel 11. A shield 22 enclosing the contacts is attached by a flange 26 having cut-away portions that enable it to be passed under tongues 23 pressed from the flange 13. The plug member comprises an insulating plate 3 mounted in a cup-shaped member 1 by bent prongs engaging peripheral notches in the plate. A ring 7 passed on to the member 1 is formed with tongues 9 forming a resilient plug that fits a hole 10 in the panel 11. The contacts 5, 20 are spaced to ensure correct engagement and the sockets are protected by the plate 17 overlapping their upper ends.
Patent GB-371223-A (GB)
Title: Improvements in or relating to the manufacture of brake drums and other annular bodies
IPC: B21K1/28
Filed: 1931-07-07
Abstract: 371,223. Making rings and brakes. BUDD WHEEL CO., 2500, Hunting Park Avenue, Philadelphia, U.S.A.-(Assignees of Farr, W. H. ; 12141, Charlevoix Avenue, Detroit, Michigan, U.S.A.) July 7, 1931, No. 19555. Convention date, July 12, 1930. [Classes 83 (ii) and 83 (iv).] Planishing and hammering ; physical or molecular structure, altering by mechanical treatment.-Annular bodies, such as brake drums, are peripherally supported on one surf ace, while another surface is swaged by a number of equi-angularly disposed, simultaneously operated hammers. A brake drum 10 is held between clamping jaws 13, whose inner surface is of the form of the finished drum, and rotated relatively to an annular support 15 carrying radially movable diametrically opposed hammers 16, with narrow working ribs 17. A shaft 18 has recesses 19 in which frusto-conical rollers 20 are mounted, and is rotated, the hammers 16 being actuated when the rollers 20 strike inner ribs 21. A mandrel 22, of similar taper to the rollers 20, is moved axially during the operation gradually to feed the hammers into the work, the swaging being continued at the inner position to harden the surfaces of the work. Specification 371,225 is referred to.
Patent GB-1033750-A (GB)
Title: Improvements in infra-red radiation detectors
IPC: H01J5/20
Filed: 1964-05-11
Abstract: 1,033,750. Sealing crystals to metal. W. HEIMANN, [trading as FORSCHUNGSLABORATORIUM PROFESSOR DR ING. W. HEIMANN]. May 11, 1964 [May 14, 1963], No. 19572/64. Heading B3V. [Also in Division H1] A method of manufacturing an infra-red radiation detector having a vacuum tight window comprises the steps of placing a window formed from a monocrystal on an aperture provided by the end of a thin sheet metal tube, or in a thin metal sheet, which is part of the detector housing so that the monocrystal projects beyond the aperture on all sides, heating the thin metal and the monocrystal to the melting temperature of the crystal material, allowing the crystal material to penetrate into the aperture under its own weight, and interrupting the heating when the window has penetrated to the desired depth. The window is preferably made from a halide of one of the alkali metals and the thin metal is preferably silver. A suitable holding device may be provided below the aperture to ensure that the window does not penetrate too far.
Patent GB-571769-A (GB)
Title: Improvements in or relating to cam profiling machines
IPC: B23Q35/10
Filed: 1943-11-23
Abstract: 571,769. Milling-machines. VICKERS-ARMSTRONGS, Ltd., and PERRY, C. Nov. 23, 1943, No. 19576. [Class 83 (iii)] In a milling-machine for producing cams copied from a master cam, the pattern 12 and blank 3 are mounted concentrically on a spindle 14 which is rotated during cutting by gearing 43, a follower 28 and a cutter 29 being mounted on parallel spindles 26, 27 carried by a frame 25 pivotally mounted on a fixed shaft 19 so that the weight of the frame will cause the cutter to operate on the blank until the follower engages the pattern. The frame 25 is fed along the axis of the blank by a feed screw 36 rotatably mounted beneath the shaft 19 in the bearings 15, 18 which support the spindle 14 and driven either by a handle 39 or by gearing 40 connected to the gearing 43. The cutter spindle 27 may be driven by a flexible drive or by gearing 35 from an electric motor 32 mounted on the frame 25 and a second motor drives through a worm reduction gear, the spindle 14 and feed screw 36 at one of two speeds depending on whether the gear 43 or the pinion 44 is driven thereby. The feed screw engages a nut 37 slidable along the shaft 19 and located between lugs 21, 22 on the frame 25, bushes 23 in the lugs sliding along the shaft 19. The cutter and follower may be adjustable axially along the spindles 26, 27 to suit variations in the cam profiles and the follower may consist of a solid of revolution or a part thereof instead of a roller. The spindle 14 may carry several cam blanks, each operated upon by a cutter parallel to the cutter 29 and the axes of the follower and cutter spindles may be inclined to the axis of spindle 14 at angles other than a right angle. Gauging- means may be provided to compare a finished or partly-finished blank with the pattern and for this purpose an adjustable pin may be mounted in a bush 47 to engage the pattern and thereby support the frame whilst a dial gauge is mounted in a bush 48 in the frame so that its stem may engage the blank to indicate deviations thereof from the pattern as the blank and pattern are rotated and the frame fed axially, the cutter and follower spindles having been removed from the machine. Instead of pivoting the frame on the shaft 19 it may have a depending flange slidable and rockable along a groove in the base-plate 11.
Patent GB-755843-A (GB)
Title: Improvements in or relating to loaded waveguides
Inventor: LOACH BERNARD GUEST
IPC: H01J23/24
Filed: 1953-07-15
Abstract: 755,843. Waveguides. NATIONAL RESEARCH DEVELOPMENT CORPORATION. Aug. 6, 1954 [July 15, 1953], No. 19610/53. Class 40 (8). [Also in Group XL (a)] A waveguide comprises two coupled regions, one of which is above and the other below cut-off for the H 01  mode of propagation. The dimension a of the guide of Fig. 1 is less than #/2 (where # is the free-space wavelength) so that the guide is dimensioned to cut off the H 01  mode. Region 3 of the guide is, however, loaded by means of a dielectric filling or by making it physically wider than the rest of the guide. The loading in region 3 may also take the form of a longitudinal ridge (Fig. 5, not shown) or plates 5, Fig. 6. Region 2 is below cut-off and is coupled to region 3 by means of a coupling structure 1 which may consist of a slotted plate, the cavities of which are rendered above cut-off by any of the means disclosed in Specification 741,355, e.g. by dielectric filling or by making the structure physically wider than region 2. In the construction of Fig. 8, region 1 comprises a series of slots 7 which are loaded by ridges 8 so that they are effectively above cutoff. Region 1 presents an inductive load to region 3 and a capacitative load to region 2 by virtue of the asymmetrical arrangement of the positions of the voltage maxima and minima of the infinite standing wave present in the corrugations. This is shown in Fig. 7 wherein #<SP>1</SP> is the guide wavelength within region 1 and the curved line represents the magnitude of Ez. Since l 1  < #<SP>1</SP>/4 the impedance of region 1 looking in the direction A is inductive and since #<SP>1</SP>/2 > l 2  > #<SP>1</SP>/4 the impedance looking in the direction B is capacitive. The phase velocity and the energy flow have the same direction in region 3 and opposite directions in region 2. Specification 706,367 also is referred to.