baber/WOPTO huggingface dataset:
Patent GB-252592-A (GB)
Title: Improvements in or relating to automatic firearms
IPC: F41A5/26
Filed: 1925-08-28
Abstract: 252,592. DestrÚe, J. Aug. 28, 1925. Breech actions, sliding breech-block. - A gasoperated gun in which the gases move a piston to compress springs which then react to operate the breech mechanism, has a gas port of large diameter and a gas cylinder closed at the end opposite the gas port so that the piston, towards the end of its stroke, is braked by the trapped air or gas. As shown, the piston 5 is adapted to be driven forwards in the cylinder 4, the front of which is closed, by the gases entering by a port 3 of large diameter formed in a muzzle extension 2 of larger bore than the barrel. The piston is connected to a block 9 which in its forward movement compresses a spring 6, the reaction of which opens the breech and compresses the firing spring 16. The sliding breechblock 29 is locked by a vertically sliding bolt adapted to be operated by a slide 19 by means of a pin 27 and cam slot 28. The slide 19 also carries the firing hammer 21. At the end of the forward stroke of the piston, the slide 19 is engaged by a pawl 12 on a link 13 connected to the block 9, so that when the spring 6 reacts, the slide 19 is driven back to open the breech. The end of the link is guided by a cam slot 33 so that towards the end of the rear stroke, after the slide 19 is engaged by the trigger 23, the pawl 12 is disengaged from the slide.
Patent GB-583583-A (GB)
Title: Improvements in compensating means for alternating current wattmeters
IPC: G01R11/52
Filed: 1944-11-06
Abstract: 583,583. Power meters. ELLIOTT BROS. (LONDON), Ltd., and HAWKES, H.. D. Nov. 6, 1944, No. 21745. [Class 37] To compensate for the error introduced in an A.C. dynamometer watt-meter by the voltage drop across the current coils 2., an additional winding 5, movable with the moving (pressure) coil 1, is supplied with a current proportional to that flowing in the current coils 2, for example, by means of a current transformer 6, 7. The ampere-turns of the compensating coil 5 relative to those of the moving coil 1 is determined by the ratio of the maximum total voltage drop across the current coils 2 and transformer primary 6 to the nominal voltage range of the instrument. The winding 5 may be interwound with the moving coil 1 or wound separately over or under it. Current may be supplied to the compensating winding 5 through the usual springs, one of which may be common to both windings 1, 5. The invention may be applied to multirange instruments by suitable tappings on the secondary 7 of the current transformer.
Patent GB-478557-A (GB)
Title: Improvements in or relating to polarising devices
IPC: G02B5/30
Filed: 1937-08-06
Abstract: 478,557. Polarizing-apparatus. ZEISS IKON AKT.-GES. Aug. 6, 1937, Nos. 21726, 21727, and 21728. Convention dates, Aug. 6, 1936, Aug. 7, 1936, and Feb. 5, 1937. [Class 97 (i)] A polarizing-filter, particularly intended for testing the setting of polarizing-screens fitted to motor-vehicle headlamps, has means for indicating when, or ensuring that, the plane of polarization of the filter makes a predetermined angle with a fixed plane of reference when the optical axis of the filter is set in or parallel to the said plane. In Figs. 1 and 2 the filter 1 is mounted between cover glasses 2, 3 so shaped as to form between them an arcuate channel 4 in which is disposed a metal ball &c. 5, the position of which can be read on a scale 6 on one of the cover glasses. The plane of polarization of the filter is in the desired direction when the ball is opposite the zero of the scale. In Fig. 6, the filter 10 is freely suspended in a liquid 13 contained between glass discs 11, 12 and is weighted by a sinker 15 so that it always takes up a position in which the diameter of the filter passing through the sinker is vertical.
Patent GB-190201-A (GB)
Title: Improvements in and relating to fluorescent screens
IPC: G21K4/00
Filed: 1921-08-16
Abstract: 190,201. British Thomson - Houston Co., Ltd., (General Electric Co.). Aug. 16, 1921. Fluorescent screens.-Consists in a screen having a surface layer impregnated with a non- saponifiable water-repellant or waxy material. Screens of various kinds may be so impregnated, for example, those consisting of calcium tungstate, willemite, or calcium sulphide made by the use of binders of various composition such as casein, pyroxylin, and celluloid. An example is given of the preparation and impregnation of the screen described in Specificaton 175,428. The impregnant may be paraffin, or a mixture thereof with a wax such as carnauba, spermaceti, or beeswax, and may be applied in the fluid or solid state.
Patent GB-1303933-A (GB)
IPC: G11C13/04
Filed: 1971-04-19
Abstract: 1303933 Holographic store INTERNATIONAL BUSINESS MACHINES CORP 19 April 1971 [2 March 1970] 21761/71 Headings G4A and G4C [Also in Division H3] A holographic data store comprises an array of holograms each storing a respective data item, a photosensitive unit for receiving light reflected from the array and generating signals corresponding to each hologram from which reflected light is received, and an optical device for causing light to be received by the photosensitive unit only from a selected hologram. As described the array of holograms is formed in a known manner (e.g. photographically) and deposited on a glass substrate 1. Kinoform arrays are mentioned. The array is then overlaid with a magnetic film and a field is applied to induce uniaxial anisotropy to provide a preferred aligned orientation of the field of the film. The magnetic film may be of a nickel-iron alloy. Individual holograms are selected by x and y column and row select lines driven by an addressing unit 8, 9, 10. The selection of a portion of the magnetic film associated with a particular hologram causes a Kerr rotation of the plane of polarization of light reflected from that hologram. A ferro-magnetic semi-conductor may be overlaid on the nickel-iron film to enhance the effect. The photosensitive unit comprises an array of photosensitive diodes 3a-3n and an analyser 6 located so that its plane of polarization is oriented at 90 degrees to that of light reflected from the array. Thus only when a hologram in the array is selected and the light reflected from it subjected to a Kerr polarisation rotation will the reflected ligh pass through the analyser 6 and strike the photodiodes array to generate a read out signal. The light source may be a laser and the Specification describes alternative constructions and methods of constructing the hologram array, e.g. by depositing the x and y select lines on a glass substrate, depositing a magnetic film at each intersection in the presence of a magnetic field, and selectively "etching" the films, e.g. photochemically or by means of an electron beam, to form a data storing hologram.
Patent GB-1507709-A (GB)
Title: Benz(de)isoquinoline derivatives
IPC: C07D221/14
Filed: 1975-05-21
Abstract: 1507709 2 - [1 - Piperazinyl - alkylene] - 1 H- benz[de]isoquinoline- 1,3(2H) - dione derivatives E R SQUIBB & SONS Inc 21 May 1975 [13 Nov 1974] 21900/75 Heading C2C Novel compounds of the Formula I and pharmaceutically acceptable acid-addition salts thereof, wherein R<SP>1</SP> and R<SP>2</SP> are each independently hydrogen, halogen, alkyl, alkoxy, alkylthio, nitro, cyano, amino or trifluoromethyl; A is a straight or branched chain C 1-8  alkylene; and Z is 4-R<SP>3</SP>-piperazin-1-yl wherein R<SP>3</SP> is phenyl or phenyl alkyl each optionally substituted with one or more substituents selected from halogen, alkyl, alkoxy, alkylthio, nitro, amino and trifluoromethyl, wherein all alkyl groups have 1 to 4 carbon atoms, may be prepared by (a) wherein A is other than CH 2 , reacting a compound of-the Formula II with H 2 N-A-OH to yield a compound of the Formula IV which is converted to a compound of the Formula V wherein Y is a leaving group such as toluene sulphonyloxy or halogen, which is reacted with a compound H 2 N-A-Z to yield the required compound; (2) wherein A is other than CH 2 , the compound of the Formula II is reacted with a compound H 2 N-A-Z; (3) a compound of the Formula VII with a compound Y<SP>1</SP>-A-Y, wherein Y and Y<SP>1</SP> are the same or different leaving group, to yield a compound V which is then reacted as in process (1); or (4) where A is CH 2 , reacting a compound of the Formula VII with formaldehyde and 1-R 3  substituted-piperazine and optionally reducing nitro groups at R<SP>1</SP> and R<SP>2</SP> to amino. Pharmaceutical compositions of the compounds I with the usual excipients show antidepressant activity and anti-inflammatory activity when administered orally or parenterally.
Patent GB-832779-A (GB)
Title: Drying machine for tubular fabrics and the like
IPC: D06C5/00
Filed: 1956-07-17
Abstract: 832,779. Drying tubular fabrics. FITCH TEXTILE CO. July 17, 1956 [July 18, 1955; June 1, 1956], No. 22041/56. Class 34(1) A tubular fabric is dried in a current of hot air during passage through a duct comprising circular tube 10, Figs. 1, 2, connected to the head 13 of a housing 14 of rectangular cross-section, the fabric tube being opened by a solid disc 24 and a perforate disc 28 mounted on a stationary shaft 26 having a transverse rod 68 spanning a semicircular strut 66 and supporting guide arms 62, 64 for the fabric. The hot air enters the tube 10 through an inlet 90 and leaves the housing through a damper-controlled outlet 94. Loss of warm air through the open end of the tube is prevented by a jet of compressed air issuing from a pipe 96. Beyond the disc 28 the fabric tube is stretched laterally to a flattened form by adjustable arms 50, 51, carrying brackets 52, 52' supporting rollers 54, 54<SP>1</SP>, 55, 55<SP>1</SP>. The fabric is drawn over the discs 24, 28 by rotatable rollers 30, 30<SP>1</SP> laterally adjustable to grip the fabric between them and the rollers 54...55<SP>1</SP>. The fabric is drawn through the housing 14 by passing between superposed rollers 70, 72 on to a removable receiving drum above the roller 72, the roller 70 being driven through chain gearing from a motor 82. Specification 789,648 is referred to.
Patent GB-213191-A (GB)
Title: Improvements in shock-absorbing apparatus
IPC: B64C25/60
Filed: 1923-09-03
Abstract: 213,191. Fairey Aviation Co., Ltd., and Fairey, C. R. Sept. 3, 1923. Dash-pots.-In shock-absorbers of the dash-pot type wherein the effective area of the apertures in the piston is controlled by means external to the cylinder there are provided in combination with means whereby the axis of the dash-pot is constrained, during working, to move angularly, means for causing the angular movement to control, automatically the effective area of the apertures in the piston. Means may also be provided for controlling the effective area of the apertures at will and in addition means may be provided for enabling the extent of rotary movement of the valve to be controlled at will. Fig. 1 shows a dash-pot adapted for connection to air-craft the effective area of the apertures 29 in the piston 23 being effected by a valve 27 mounted on a pistonrod 28 and adapted to be rotated by a radial arm 31 which is operated in the angular displacement of the axis of the dash-pot by means of a worm, and worm-wheel and sprocket wheel 38. The sprocket wheel 38 is provided with a sprocket chain 39 one end of which is secured to a fixed abutment Y while the other end is connected through a spring to a control lever which enables the valve to be adjusted at will. Figs. 7 and 8 show an arrangement for controlling the valve. The radial arm 31 is embraced by a normally stationary bracket 60 so that on the angular displacement of the dash-pot about the pivot 26 the radial rod is moved. The movement of the radial arm at will is accomplished by means of a control lever 70 which thrugh the connection 63 effect the rotation of the bracket 60 about the pivot 61 which the extent of movement of the radial arm 31 is effected by control lever 65 which turns the bracket 60 about the axis 62 and so alters the effective length of the radial arm 31. Fig. 4 shows a dashpot designed for air-craft the external controlling means being omitted. The piston 23 is provided with cup leathers and with an apertured valve 27 and lateral guide rods 51 are provided with elastic buffers 57 to limit the movement of the guide rods 51 and consequently the piston.
Patent GB-223702-A (GB)
Title: Improvements in wireless crystal detectors
IPC: H01L21/00
Filed: 1923-09-04
Abstract: 223,702. Pearmain, A., and Charstone, W. J. Sept. 4, 1923. Crystal detectors. - A catswhisker comprises several turns of iron ribbon and the contact end is cut to form a sabre point.
Patent GB-1106185-A (GB)
Title: Device for measuring a property of a material
IPC: G01N27/00
Filed: 1965-05-25
Abstract: 1,106,185. Measuring properties of a material. N.B. AGDUR. May 25, 1965 [May 29, 1964; Feb.8, 1965], No.22261/65. Heading G1N. The thickness, moisture content, or other property of a moving web 14, Fig. 11 is measured by passing it through a resonant cavity 11 (also Fig. 3 not shown) energized by a sweep frequency generator 10, and measuring the difference between the times of coincidence of generator frequency with, respectively, the resonant frequency of the cavity in one mode, and a reference frequency. The reference frequency may be provided by the generator 10, by a second resonant cavity (101), Fig. 12 (not shown), or by a second resonant mode of the test cavity. The coincidences are detected by circuits 12, 90 (1020) which produce pulses to operate a square wave generator 919. The net D.C. level of the square wave is measured at 13. Two cavities of different characteristics may be used if neither thickness nor moisture content is known. The cavity has two halves (31, 32) and each of these has a flange (36, 37) to facilitate feed of the web. An adjustable element (35) is provided to vary the assymetry of the two halves so that a second mode resonance (TM 111 , Fig. 1 not shown) may be split into two clearly defined peaks (TM' 111  and TM 111 '' Fig. 2 not shown) one of which falls within the frequency sweep and constitutes the reference frequency. To ensure that variations  in the separation (8) of the two halves of the cavity do not materially affect the difference in resonant frequencies of the two modes produced by the web 14, the internal structure is modified by introducing discs (51, 52), Fig. 5 (not shown), or annular recesses (61, 62), Fig. 6 (not shown).
Patent GB-444737-A (GB)
Title: Improvements in and relating to thermionic electron emissive electrodes for gas or vapour electric discharge devices
IPC: H01J1/28
Filed: 1935-08-07
Abstract: 444,737. Thermionic cathodes. BRITISH THOMSON - HOUSTON CO., Ltd., Crown House, Aldwvch, London. Aug. 7, 1935, No. 22338. Convention date, Aug. 10, 1934. [Class 39 (i)] A thermionic electron - emissive electrode, suitable for use in gas or vapour electric discharge devices such as lamps, comprises a base 5 of metal such as nickel and of tubular formation for accommodation of a heater 10, upon the surface of which is wound a coiled filamentary wire 15 of tungsten or molybdenum, electron-emissive material being adherent both to the base and to the coiled wire and in the interstices between the convolutions, yet leaving open the intervals between the outer convolutions. The base 5 may also be of konel metal. Leads 8, 9 to the heater 10 pass through shouldered lava insulators 7, the base 5 being connected to one lead by a nickel strip 11. A lamp may contain two such electrodes with their heaters connected in series by a refractory molybdenum lead, the filling comprising sodium (1-2 microns), mercury (1-2 mms.) or cadmium, together with a starting gas such as neon or argon (1-7 mms.). The Specification as open to inspection under Sect. 91 comprises a thermionic electronemissive electrode having a metal base and a roughened overlay of tungsten or molybdenum carrying the emissive material, and describes an overlay of coarse tungsten powder (50-60 mesh per inch) which is applied with a binder of nickel or tungsten oxide in amyl acetate and nitrocellulose to a nickel base, the whole being baked in hydrogen at 1200‹ C. Molybdenum may replace the tungsten, and the binding oxides may be omitted. The nickel base mav be similar in construction to base 5 described above or, as shown in Fig. 3 (Cancelled), may be open at one end with the roughened overlay 12 on the inside of the tube. This subject-matter does not appear in the Specification as accepted.
Patent GB-459838-A (GB)
Title: Apparatus for separating sand from a mixture of sand and water
IPC: E03F5/14
Filed: 1936-08-14
Abstract: 459,838. Gravity-separation apparatus. CHESHUNT SAND & GRAVEL CO., Ltd., and SQUIRE, G. F., River Lea Wharf, Windmill Lane, Cheshunt, Hertfordshire. Aug. 14, 1936, No. 22377. Addition to 422,322. [Class 46] In apparatus for separating sand from a mixture of sand and water, as described in the parent Specification and comprising a settling- vessel B with an elevator F for removing the settled sand, arranged so that the horizontal distance from the farthest point of an overflow for the water to the digging point is not greater than the vertical depth of the digging point, the overflows are formed of a number of parallel troughs T fixed horizontally between a partition X and the edge of the vessel.
Patent GB-995787-A (GB)
Title: Improvements in or relating to tobacco leaf carriers
IPC: A24C1/28
Filed: 1964-05-29
Abstract: 995,787. Making cigars. ARENCO A.B. May 29, 1964 [Aug. 22, 1963], No. 22399/64. Heading A2C. A tobacco leaf carrier for a cigar or bunch machine which leaf carrier is connected to suction means and means sensing the pressure deviations in the leaf carrier. Two leaf binders 1 and 2 transporting wrappers and binders are connected to suction lines 3 and 4. Sensing means 5 for detecting pressure in the inside of the leaf carrier is connected via a three way valve 6 to a pressure gauge 5 with a membrane to control a switch 9 in parallel with a switch 10 controlled by a cam follower 11 cooperating with a cam plate 12. The cam plate rotates in synchronism with the leaf carrier which moves from the cutting die to the discharge point. The switch opens when the carrier moves from the collecting point and suction is applied when the pressure gauge indicates the absence of a tobacco leaf or a defective leaf, the membrane does not close the switch 9 and the solenoid winding 18 is de-energized. The contact 21 for the motor opens and contact 20 for the indicator 23 may be optical or acoustic.
Patent GB-506975-A (GB)
Title: Improvements in or relating to suspension systems for vehicles
IPC: B60G11/22
Filed: 1938-07-28
Abstract: 506,975. Vehicle spring-suspensions. AUTO UNION AKT.-GES. July 28, 1938, No. 22465. Convention date, July 28, 1937. [Classes 108 (ii) and 108 (iii)] A vehicle suspension of the kind in which a pair of wheels or an axle is supported by links which are pivoted on the vehicle frame and resiliently mounted by means of rubber cushions, the cushions being associated with each link in pairs and the cushions of each pair arranged on opposite sides of the link pivot, one having its upper and lower faces supported respectively on the link and frame and the other, on the frame and link respectively, is characterized in that all the cushions are arranged on the same side of the link and one cushion of each pair acts directly on the link and the other, indirectly In the embodiment shown, the rear wheel 2 is supported by a link 3 pivoted at 4 on a transverse frame member 5 and hingedly connected at 14, 16 to rubber cushions 6, 7. The supporting plates 8, 11 of the cushion are secured to a reinforcing frame member 18 and to the link 3 respectively, and the plates 9, 12 of the cushion 7 to the frame and to a bolt 15 passing through the cushion and pivoted at 16 to the link.
Patent GB-281412-A (GB)
Title: Improvements in steam boilers
IPC: F22B17/12
Filed: 1926-09-11
Abstract: 281,412. Schulze, A. Sept. 11, 1926. Dampers. - To distribute, uniformly the furnace gases amongst the tubes of a sectional boiler, the area of the intake to the passages 32 leading to the chimney consisting of openings 24<1> is gradually reduced towards the outlet connection 2 and is regulated by a sliding member 25 with openings 25<1>. The sliding member shown in Fig. 6 moves vertically, its inclined lower edge more or less uncovering the intake which in a modification consists of a single long opening. The sliding member may consist of an imperforate plate with an inclined lower edge.
Patent GB-184810-A (GB)
Title: Improvements in or relating to rotary furnaces
IPC: F27B7/36
Filed: 1922-08-18
Abstract: 184,810. Pehrson, A. H. Aug. 20, 1921, [Convention date]. Rotary furnaces.-Air or other aeroform fluid is introduced into the charge for metallurgical chemical and thermal purposes, through tuveres 12 at such a distance from the centre that they are covered in turn by the charge, and when so covered are put in connection with the air or like supply. In the construction described, the tuyeres 12 are connected through pipes 14, externally arranged on the discharge part 3 of the furnace, to a ring of inlets adapted to make joint with a fixed valve plate 18, having in its lower portion an arcuate slot communicating with a blast box 20. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a modification in which automatically regulated cocks are used instead of the valve ring arrangement. This subject-matter does not appear in the Specification as accepted.
Patent GB-318586-A (GB)
IPC: B41F33/08
Filed: 1929-07-23
Abstract: 318,586. Hurwitz, J. B., Hurwitz, A. S., and Gerfunkel, (nÚe Hurwitz), M., (trading as Hurwitz & Co., H.). Sept. 6, 1928, [Convention date]. Tripping-arrangements.-In a rotary duplicating or printing apparatus the impression cylinder is prevented from contacting with the printing-cylinder, should a sheet be missing, by means operated by a feeler a controlled by the sheet. The feeler a is arranged between feed rollers c, d, of which the upper one d is raised and lowered by cam mechanism from the printing-cylinder. The end of the feeler a is normally pressed by a sheet into a recess in the roller c, but if a sheet is missing a weight b<1> rotates the shaft b of the feeler a anticlockwise, and the feeler rises into a groove in the roller d. This movement of the shaft b causes rotation of an eccentric shaft s on which the impression roller is mounted, and the impression roller is moved out of printing position. An arm g on the shaft b through a yielding link h operates a lever i on an oscillating lever p operated by a cam on the printing- cylinder, and a nose i<2> on lever i is caused to engage a stop on a lever pivoted to the shaft b. A gear sector n on the lever b is thus made to operate a gear t on the shaft s, and the rotation of the shaft s trips the impression cylinder. The shaft s is fitted with a disc r formed with two notches which are engaged by a spring-bolt x to hold the impression cylinder in printing or tripped position respectively. After the cylinder is tripped by the feeler mechanism, it is returned to printing position by hand-operation of disc r. To enable the printing pressure to be adjusted, the disc r is connected adjustably to the gear t by means of clamping-screws passing through slots in the disc and engaging threaded apertures in a disc r<1>, Fig. 2, connected by a claw coupling to the wheel r. In a modification, this adjustable connection is replaced by a worm gearing connection which enables the adjustment to be effected during the working of the machine.
Patent GB-182030-A (GB)
Title: Improvements in soap holding and suspending devices
IPC: A47K5/05
Filed: 1921-08-25
Abstract: 182,030. Brennan, E. A. Aug. 25, 1921. Soap-holders.-A device for suspending soap comprises a strip, rod, or tube A, formed at one end with a hole or loop B, a cross-piece C being secured or screwed to the other end, or the strip may be cut lengthways and bent over. The device is thrust through the soap tablet, which is then suspended by the loop B. Reference has been directed by the Comptroller to Specifications 6231/07 and 22150/13.