baber/WOPTO huggingface dataset:
Patent GB-501691-A (GB)
Title: Piezo-electric apparatus for repeating electric impulses
IPC: H04L25/04
Filed: 1938-02-11
Abstract: 501,691. Piezo - electric crystals. STANDARD TELEPHONES & CABLES, Ltd. Feb. 11, 1938, No. 4405. Convention date, March 16, 1937. [Class 40 (v)] [Also in Group XXXVII] Apparatus for repeating electrical impulses comprises a plate of piezo-electric material with associated electrodes which, when an EMF is connected across the electrodes moves a contact to operate a switch with a time delay produced by a resistance in series with and a capacity in shunt to the electrodes. Two plates 14 and 15 of piezo-electric material such as Rochelle salt crystal are cut similarly with respect to the crystallographic axes so that an EMF applied across the faces results in a lengthening or shortening of the plates. The plates are both coated on each side with a conducting material such as colloidally fine carbon, are cemented together and waterproofed with shellac with two faces contiguous, and mounted with thickened ends 16 and 17 secured by a bracket 11 to a base 1. When an EMF is applied across the terminals 18 and 19 connected respectively to the contiguous and the outer conducting coatings, one plate lengthens and the other shortens to cause the composite plate to bend and bring contact 20 on its upper end into engagement with a fixed contact 8, while reversal of the EMF reverses the bending to close another circuit. To prevent chattering an oil dashpot 32 is provided, or a resistance is connected across the plates to dissipate the electrical energy transformed by the piezo-electric effect from the mechanical energy of vibration. The operating time of the relay is controlled by a resistance in series and a capacitance in parallel with the crystals, while a series condenser may nullify the temperature variations of the crystal capacity, or the crystals are connected across a Wheatstone bridge arrangement of condensers. The arrangement shown in Fig. 13 includes a thermionic valve 40 to increase the sensitivity to, low voltages. With zero grid volts, the current through the valve and the right-hand circuit is such that the volts drop through inductance L and resistance R3 is equal to the battery volts E2 so that there is no EMF across the relay 41. Application of volts to the grid varies the current and causes a substantially greater EMF to appear across the relay plates.
Patent GB-348676-A (GB)
Title: Improvements in gas pressure regulators for street lamps, house, apartment and the like connections
IPC: G05D16/06
Filed: 1930-02-10
Abstract: 348,676. Pressure-regulating valves ; components. BECKER, A. C., 63, Edisonstrasse, Oberschoneweide, Berlin. Feb. 10, 1930, No. 4433. Convention date, Feb. 8, 1929. [Class 135.] Seats.-A membrane gas-pressure regulator operating as described in Specification 299,573, [Class 135, Valves &c.], has the valve seat d adjustable from the outside so that without opening gas conducting parts, it is possible to adjust the valve seat during the operation of the valve. On the seat d, which is screw-threaded to engage a corresponding thread in a carrier c, is mounted a strapshaped part f and spindle g the squared part g<1> of which projects from a packing i and lock-nut j i in a nut h the outer flange h<1> of which screws on to the carrier c. A casing k contains a membrane m which provides two chambers of which the lower is subject to the pressure existing in the space between the diaphragms n<1>, n<2> by means of a pipe o to which it is connected by a cap nut p. To adjust the valve seat d the cap q is removed and the casing k rotated on the pipe o so as to expose the squared part g<1> of the spindle a and the part engaged and turned by a spanner to adjust the distance between the valve member r and the valve seat d. By this means the consumption pressure behind the valve which is effective on the lower surface of the diaphragm n<2> to close the valve r is regulated.
Patent GB-560451-A (GB)
Title: Manufacture of azo-dyestuffs
IPC: C09B35/46
Filed: 1942-04-03
Abstract: Trisazo dyes, suitable for dyeing or printing animal fibres, e.g. wool, silk or leather, or cellulose fibres, e.g. cotton, linen, ramie, hemp or regenerated cellulose, the after-coppered dyeings being specially fast to light, to washing and to acid, are obtained by coupling (alkaline) a diazotised 4-chloro-2-aminophenol, free from sulphonic acid groups and carrying a nitro group in the 5- or 6-position, with an azo dyestuff of the general formula <FORM:0560451/IV/1> wherein R1 represents a residue of the benzene series, which may be substituted, e.g. by methyl, and carries the OH and COOH groups in o-position to each other and R2 represents a 4 : 41-diphenyl residue, which may be substituted, e.g. by halogen or by alkyl or alkoxy groups but is free from sulphonic acid groups.  The products may be treated in substance, in the dyebath or on the fibre with an agent yielding metal, e.g. copper. In an example the preparation is described of the dyestuffs, salicylic acid\sMbenzidine-->(acid 2 : 5 : 7-acid (alkaline)\sM4-chloro -5- or 6-nitro-2-aminophenol.  An example is also given of the dyeing process for cotton with after-coppering in the dyebath. Specifications 12932/15, 101,601, [both in Class 2 (iii)], 455,274, 468,362 and 516,076 are referred to.  The Specification as open to inspection under Sect. 91 comprises also (a) the use as diazo component of any amine of the benzene series, free from sulphonic acid groups and containing a lake-forming group, e.g. a hydroxy, carboxy or carboxymethoxy group, in o-position to the diazotised amino group and at least one halogen atom, (b) the use of any substituted benzidine component.  This subject-matter does not appear in the Specification as accepted.
Patent GB-148725-A (GB)
Title: Improvements in terminal connections for electric conductors
IPC: H01R4/50
Filed: 1920-02-13
Abstract: 148,725. Imray, O., (Bosch Akt.-Ges., R.). Feb. 13, 1920. Binding-posts and terminals.-A terminal connexion for a conductor d comprises a binding- screw b and a hole c for the conductor at rightangles to the axis of the screw, the hole being tangential to and partially penetrating a recess provided in the terminal a to receive the head of the screw. The head of the screw and the recess are preferably of conical form in order to produce a wedging action when the screw is screwed down on to the conductor, this action serving both. to secure the conductor and to lock the screw. In the form shown in Figs. 4, 5, the recess is provided with a channel e into which the conductor is forced when the screw is screwed home, and the terminal portion is provided with a downwardly-extending slot through which the conductor may be inserted into the tangential passage. In this form, the recess is provided with an upper cylindrical guiding-portion, the head of the screw being formed with a corresponding cylindrical portion. Several tangential passages may be provided for the purpose of securing several conductors by a single screw.
Patent GB-525008-A (GB)
Title: Improvements in a device for signalling the derailment of railway carriages
IPC: B61L1/20
Filed: 1939-02-11
Abstract: 525,008. De-railment signalling device. WINBLADH, K. H. Feb. 11, 1939, No. 4523. [Class 105] Warning of de-railment of a railway vehicle is given by means of a slidable rod 3 having cross arms 4 which come into contact with the rail 2 so that the rod is raised to operate a switch plunger 11 in a circuit to a warning signal in the cab of the locomotive. A cap 13 is adjustably mounted on the rod 3 by spring claws 14 entering grooves 15 ; this allows adjustment according to the vehicle load. The propulsion power may be cut off and the brakes applied.
Patent GB-429125-A (GB)
Title: Improvements in or relating to bobbins for use in spinning and like frames
IPC: B65H75/30
Filed: 1934-02-12
Abstract: 429,125. Bobbins. FRASER, G., FRASER, N., and FRASER, J., Westburn Foundry, Arbroath, Angus. Feb. 12, 1934, No. 4533. [Class 120 (iii)] A bobbin for use in spinning and like frames has grooves of arcuate form cut in the base 1, each groove 3 having a roof 4 sloping upupwards from the bottom face 5 of the bobbin towards the top of an abutment 6 with which the driving peg 2 of the spindle engages; the roof 4 may terminate in a shoulder opposite the abutment 6.
Patent GB-140565-A (GB)
Title: Improvements in change speed gears
IPC: F16H61/02
Filed: 1919-02-24
Abstract: 140,565. Hemingway, W., and Hewlett & Blondeau. Feb. 24, 1919. Variable-speed and reversing gearing comprises stepped bevel planet-gears 15, 22 carried by a spider 20 secured to a driven shaft 25. The gears 15 mesh with a pinion 9 secured to a driving- shaft 1, and with a loose gear 29. The gears 22 mesh with loose gears 16, 24. A lever 50 is adapted to cause either clutch pins 12 carried by the gear 16 to engage recesses 19 in the spider 20 for a solid high-speed drive, or a toothed member 17 to engage teeth 14 carried by the gear 16 and hold that gear against rotation for reversed driving. A lever 52 is adapted to bring a toothed member 28 alternatively into engagement with teeth 26, 30 carried by the gears 24, 29 to hold these gears against rotation to effect two reduced forward speds. A modification is described having an additional planet and loose gear pair. A casing 6 encloses the gearing.
Patent GB-536356-A (GB)
Title: Improvements in cinematographic apparatus
IPC: G03B21/43
Filed: 1940-03-12
Abstract: 536,356. Kinematograph apparatus. TECHNICOLOR MOTION PICTURE CORPORATION. March 12, 1940, No. 4618. Convention date, May 31,1939. [Class 97 (i)] In means for driving a take-up spool, comprising friction surfaces carried by driving and driven members and held together by a spring, the pressure exerted by the spring is increased, as winding progresses, by means driven, independently of the film, by either the driving or driven member. As shown, a spindle 7 carrying a spool 5 is driven through a friction clutch 19, the pressure exerted by a spring 31 beind increased, as winding proceeds, by a screwed sleeve 40 rotated intermittently by the spindle 7. The clutch comprises plates 34 engaging a key way in a driven housing 19, plates 36 engaging a key way on the spindle 7, and friction plates 38, the drive for the housing 19 being effected through a worm and a worm wheel 21 secured thereto. The spindle 7 carries a worm 59 driving a worm gear 58, Fig. 2, on a spindle 57 carrying a cam 56 engaging a follower 55 on an arm 50 extending from a sleeve 48. A second arm 49 on the sleeve 48 carries a pawl 51 engaging a ratchet wheel 47 secured to the screwed sleeve 40. The rocking of the arms produced by the cam 56 and by a spring 60 intermittently rotates the screwed sleeve 40, and advances it to increase the clutch pressure. The sleeve 40 may be reset in its original position by a hand-rotatable spindle axially movable to engage a pinion 61 thereon with a gear 45 on the sleeve ; a handle 53 may be used to raise the pawl from the ratchet during the re-setting.
Patent GB-868160-A (GB)
Title: Improvements in or relating to sanding devices
IPC: B27G17/04
Filed: 1959-02-10
Abstract: 868,160. Paint and wood scrapers. ENGINEER, H. B. Feb. 9, 1960 [Feb. 10, 1959], No. 4622/59. Class 61. A scraper for woodwork or paint which removes the surface as a fine powder, comprises a block 1 adapted to be held in the hand, having projecting from one face thereof a plurality of blades 5 mounted in slots 4 which extend substantially parallel and in spaced apart relation across the face of the block, the sharp edges of the blades projecting a short distance from the surface of the block and the rear edges resting on a backing member 2 of a resilient or flexible material such as rubber. As shown the slots are formed by mounting, as by sticking, blade locating elements 3 of laminated construction side by side on the backing member 2. The sides of the elements 3 which define the slots 4 are provided with a series of recesses or notches so that each blade is supported at spaced points along its length. By flexing the backing member 2 the slots can be opened to insert or remove the blades. The device is held in closed position by at least one surrounding rubber band 7. In a modification, Fig. 2, (not shown), only the two outer elements 3 are secured to the resilient backing member 2, the inner elements being slidably mounted on the backing member. The backing member may be reinforced by a plate or element of thin steel.
Patent GB-158907-A (GB)
Title: Wireless signalling in mines
IPC: H04B5/00
Filed: 1921-02-09
Abstract: 158,907. Ges. f³r Drahtlose Telegraphie. Feb. 9, 1920, [Convention date]. Signalling to or from mine and colliery workings; aerials.-Relates to means for signalling from the surface to mine-workings by wireless telegraphy or telephony. A considerable portion of the aerial L of a transmitter A on the surface is hung vertically down the shaft S as far as possible from the walls. Tuned oscillatory circuits R are provided in the mine levels, to one side of each of which circuits is connected an aerial E of the same length as the aerial L, and hanging vertically in the shaft, whilst to the other side is connected another aerial H extending horizontally along the gallery. Receivers B' - - B<4> are provided in desired positions in the galleries or the passages leading from them.
Patent GB-472581-A (GB)
Title: Improvements relating to roller and trough apparatus for finishing textile fabrics
IPC: D06C15/00
Filed: 1937-02-16
Abstract: 472,581. Finishing fabrics. GESSNER AKT.-GES., E. Feb. 16, 1937, No. 4670. Convention date, May 23, 1936. [Class 42 (i)] Stop motions.-Fabric 1 on its way to a calendering machine of the roller - and - trough type passes between two rollers 2, 3 in the circuit of a relay 8. Any foreign metal body in the fabric completes the relay circuit and closes a double switch 10, 11. The switch 10 completes a circuit through a second relay 13 which opens the circuits 19, 20 of the motor driving the calendering machine. At the same time the switch 11 closes a circuit through an indicator lamp 15 and also a retaining circuit through the relay 8 and a resistance 16.
Patent GB-679601-A (GB)
Title: The chlorophenoxyacetaldehyde diethyl acetals
Filed: 1951-02-26
Abstract: The invention comprises chlorophenoxy-acetaldehyde diethyl acetals of the formula <FORM:0679601/IV (b)/1> where n is an integer from 1-5. They may be prepared by reacting a chlorophenol and the equivalent amount of sodium methylate, or a sodium chlorophenate and a small amount of sodium methylate, with chloroacetal, preferably in ethanol, under pressure, at 140-160 DEG  C.  In examples there are prepared (1) 4-chloro-; (2) 2-chloro-; (3) 2 : 4-dichloro-; (4) 2 : 4 : 5-trichloro-; (5) 2 : 4 : 6-trichloro-, and (6) pentachloro-, phenoxy acetaldehyde diethyl acetal.
Patent GB-286863-A (GB)
Title: Improvements relating to electric accumulators
IPC: H01M50/262
Filed: 1927-02-19
Abstract: 286,863. Trotter, G. H. Feb. 19, 1927. Cells; cases.-A battery consisting of a number of separate units or containers 1 is provided with a single cover plate 6 having grooves 7 which engage the upper edges of the containers and hold them together. The containers may be divided by partitions to form a number of cells and may be supported on a tray 2 having vertical ends 3 to which the cover 6 is secured by screws 13. The grooves 7 may be filled with rubber packing, pitch &c. Bolts 16 may be passed through the cover and tray 2 and side panels may be provided engaging in grooves in the cover and tray. A handle 19 may be provided engaging in recesses 20 in the underside of the cover. Ribs 21 may be formed on the cover to prevent creeping of the acid. A number of batteries may be superimposed as shown in Fig. 10, the tray 2 of the upper set resting on the cover 6 of the lower set. the two sets being connected together by bolts 22.
Patent GB-755985-A (GB)
Title: Improvements relating to electric discharge devices
IPC: H01J21/36
Filed: 1954-02-17
Abstract: 755,985. Thermionic valves. BRITISH THOMSON-HOUSTON CO., Ltd. (General Electric Co.). Feb. 17, 1954, No. 4694/54. Class 39 (1). The cathode 5 and grid 40, Fig. 6, are spaced from one another by an insulator 1 having two accurately formed bearing surfaces 17, 18 on the same side of the insulator, one surface 17 locating the cathode while the other 18 locates the grid. The valve generally is designed to be sealed together by soft solder and evacuated in one operation, being for this purpose formed of a cathode assembly, Fig. 2, an anode assembly, Fig. 4, and a grid assembly 36, 38, Fig. 6. The cathode assembly comprises cathode 5 mounted on the end of cylindrical cathode eyelet 3 which passes through central aperture in insulator 1 and is urged upwards by spiral spring 11 engaging respectively the turnedover end of the eyelet and cathode terminal shell 9 which enters a recess in the back of the insulator and is ultimately sealed therein by solder ring 10. Three lateral supports 3<SP>1</SP> are pinched between shell 9 and the insulator to provide a low inductance connection and, if made of spring material, may replace spring 11 in locating the cathode. Cathode shell serves as lead to the cathode and to one end 16 of the heater 14, the other lead 15 to which is secured to a central pin 47, Fig. 6, supported in insulator 42 sealed by solder rings 49, 50. The anode 25, Fig. 4, has a hollow stem 24 for evacuation which can be sealed at the end by dipping into a solder bath; the stem passes through central aperture in anode insulator 22 and is sealed by solder ring 26. Grid 40 is stretched across support 38 which rests on insulated locating surface 18 and is spaced from anode insulator by spacing ring 36. An external ring 34 surrounds the three assemblies and the space between it and members 22, 36, 38 and 1 is filled with solder when solder ring 41 is melted. The complete assembly shown in Fig. 6, is mounted in a bell-jar, Fig. 8 (not shown), which is evacuated. The solder rings are melted by induction heating to 800‹ C and, after the usual outgassing schedule, a pot of solder is moved up to seal exhaust opening 31. The appropriate surfaces of the ceramic insulators are painted with titanium hydride slurry to give a better bond to the solder. The insulators may alternatively be quartz or a glass capable of withstanding the processing temperature.
Patent GB-893737-A (GB)
Title: Improvements in or relating to laboratory centrifuges
Inventor: JACKSON CLIVE
IPC: B04B5/04
Filed: 1959-02-11
Abstract: 893,737. Centrifugal separators. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. Feb. 9, 1960 [Feb. 11, 1959], No. 4760/59. Class 23. Solid is separated from liquid in apparatus comprising a rotary vessel 9 of inverted frusto conical shape having a centrally apertured cover 12. The vessel is supported within a holder 10 having a transparent cover 15 and adapted to be attached to the shaft of an electric motor by screws 5, a cushioning liquid filling the space 14 between vessel and holder. After centrifuging the solids remain packed at the periphery of the vessel which may be silica and the clear liquid is discharged by a suction tube. In modifications the vessel is directly connected to the motor shaft, is provided with internal radial ribs, and is constructed of transparent material, or from metallic material having a plastic or platinum lining.
Patent GB-1242192-A (GB)
Title: Improvements in or relating to rotary positive-displacement machines
Inventor: ZIMMERN BERNARD
IPC: F03C2/30
Filed: 1969-01-29
Abstract: 1,242,192. Rotary positive - displacement machines. B. ZIMMERN. Jan.29, 1969 [Feb.8, 1968], No.4815/69. Heading F1F. A pump, compressor or motor has variablevolume chambers defined by a helically-toothed frusto-conical rotor 1, a casing 2 containing the rotor, and a pinion 3 with teeth 4 shaped to establish seals between the flanks of adjacent rotor teeth, the pinion being situated externally of the casing with its teeth extending through a slot 6. Portions of the rotor between the roots of the helical teeth are shaped so as make to contact with the tips of the teeth 4. A triangular port 7 is provided for the high-pressure working-fluid, the low-pressure working-fluid entering or leaving the said chambers through the upper end of casing, which is open as shown. Several alternative embodiments are described, Figs. 5 to 17 (not shown), wherein the pinion has its teeth parallel with its axis of rotation, which may be oblique relative to that of the rotor, the rotor and the casing may be cylindrical, the rotor may have a disc-like configuration and be provided with spiral teeth on one or both sides, and the casing may have a duct for the low-pressure working-fluid. When spiral teeth are provided on both sides, the teeth on each side mesh with two pinions.
Patent GB-389492-A (GB)
Title: Improvements in or relating to pneumatic percussive tools
IPC: B25D17/08
Filed: 1931-09-11
Abstract: 389,492. Percussive drills. FORGES ET ATELIERS DE MEUDON, 175, Avenue de Verdun, Meudon, Seine-et-Oise, France. Sept. 11, 1931, No. 4830/33. Divided on and addition to 389,144, under which a Specification was laid open to inspection under Sect. 91 of the Acts, Nov. 27, 1931. [Class 124.] A drill steel 1 is held in a percussive drill by a collar member 4, which is loosely pivoted on the tool head 3. This collar carries pivoted shoes 17 which grip the steel when the collar becomes inclined.
Patent GB-1081228-A (GB)
Title: Burner apparatus
IPC: B01J12/00
Filed: 1964-10-27
Abstract: Apparatus for the vapour phase production of oxides comprises a frusto-conical reaction zone (9) surrounded by at least two concentric annuli (2, 8) closed at their larger ends, into which are introduced fuel gas and free O2-containing gas, respectively, through tangential inlets (3, 5), whereby the gases flow helically around the outer walls of zone (9) and into premix zone (1). The volume of zone (1) may be adjusted by plug 21.  A volatile metal or Si compound is introduced alone, or mixed with the O2 or fuel. Examples are TiCl4, ZrI4, TiBr4, SiCl4, TiOCl3, AlCl3.  The fuel gas may be methane, propane, butane, CO, S chlorides, or S vapour. The gases may be diluted with inert gas, e.g. N2, He, and may be fed in the same direction of rotation. The reaction zone may be preheated by initially introducing and igniting only fuel and O2, and the walls and small base may be cooled by water <PICT:1081228/C1/1> spraying or circulating water.  The apparatus may be made of Ni, Al, stainless steel, glass, or vitreous silica.
Patent GB-1243966-A (GB)
Title: Improvements in or relating to bus-bar members
Inventor: HILLYARD COLIN DAVID
IPC: H02G5/00
Filed: 1968-01-23
Abstract: 1,243,966. Bus-bars. PIRELLI GENERAL CABLE WORKS Ltd. 21 Aug., 1968 [23 Jan., 1988], No. 5023/71. Divided out of 1,243,964. Heading H1A. A die-cast metal, e.g. aluminium alloy bus-bar member 1 for use in an electric power distribution pillar is provided with three channels 44, 45, 46 having in all sides thereof threaded holes 9, 9<SP>1</SP> for bolting thereto incoming I and outgoing O and spur S main cable phase conductors and a flat side including spurs 41 having a plurality of tapped holes 49 adapted for attaching A.C. service cables. An aperture 40 is provided to accommodate a support pillar 16.