baber/WOPTO huggingface dataset:
Patent GB-519755-A (GB)
Title: Improvements in and relating to the prevention of interference in radio receivers
IPC: H03J5/24
Filed: 1938-10-01
Abstract: 519,755. Wireless receivers. MURPHY RADIO, Ltd., and MOXON, L. A. Oct. J, 1938, No. 28536. [Class 40 (v)] In radio receivers provided with a plurality - of pretuned circuits and also a manually-tuned circuit, which circuits are brought into operation by a selector device comprising press-buttons or like switching means, the press-button operated by the selector to bring the manual tuning circuit into the signal channel operates addition- .al switching means for connecting to the signal channel as series rejector or shunt acceptor circuits one or more of the pre-set circuits. Press-buttons 1 - 4 connect pre-set inductances 8-11 across series-connected condensers 5, 6 to the aerial 7 and input circuit of the valve 26 through contacts 13, 14, 15 respectively. A fifth press-button 12, operated for manual tuning, controls contacts 13-16, 14-23, 15-24, 17 and 25, so that on depression of the button contacts 13, 14, 15 are broken ; contacts 16, 17 connect the aerial 7 through condensers 18, 19 to an inductance 20 coupled to the manuallytuned circuit 21, 22 ; contact 23 connects this circuit to the input of valve 26; contacts 17, 24 connect the inductance 11 across the condenser 18 ; and contacts 24-25 connect the inductance 10 across the condenser 19. Two rejector circuits, tuned respectively to the frequencies selected by the press-buttons 3, 4, are thus introduced between the aerial 7 and the inductance 20, as shown in Fig. 2. The circuits and switching arrangements may be modified to select capacitances instead of inductances.
Patent GB-188646-A (GB)
IPC: H01H85/30
Filed: 1922-10-20
Abstract: 188,646. Jublin, L. Nov. 8, 1921, [Convention date]. Fusible cut-outs.-In a cut-out, intended to indicate short circuits bv the closing of an auxiliary circuit by means of a movable device, freed by the blowing of one or more of the fuses, the device j, in the form of a weight, is held by a flexible connection such as a silk thread, i, of which the two extremities are connected to washers h threaded on the fuses d. The weight j descends the slideway formed by walls e, e<1> to close a circuit through contacts k. Fig. 3 shows the device applied to a load of lamps x. In this arrangement, an audible signal z and an optical signal y are employed.
Patent GB-1118829-A (GB)
Title: System for power overload factor measurements and for power overload protection of capacitive loads
IPC: H02H3/52
Filed: 1965-07-06
Abstract: 1,118,829. Protective arrangements. POLITECHNIKA SZCZECIKSKA. 6 July, 1965 [6 July, 1964], No. 28612/65. Heading H2K. [Also in Division G1] A system for the measurement of power overload factor for capacitive loads in supply systems containing a large proportion of voltage harmonies, which may be used to operate a protective relay, is described. The power overload factor is defined as where n is the order of a given voltage harmonic, n p  being the highest order in the supply, and k n  is the ratio of the amplitude of the nth harmonic to the effective amplitude of the voltage supply. The voltage coil I of a wattmeter is connected across the supply in series with a corrective network 1 containing resistances and inductances so chosen that the current through the coil I is always directly proportional to k n  for each harmonic in the supply. The current coil II is also connected across the supply, but in series with a capacitor C p , so that the current through this coil is proportional to nk n  for each harmonic. These two currents cause the meter to set to a position proportional to W q , and the meter can be used to control a protective relay.
Patent GB-1352282-A (GB)
Title: Flexible sheet prosthesis
IPC: A61F2/00
Filed: 1972-06-19
Abstract: 1352282 Prosthetic sheet CUTTER LABORATORIES Inc 19 June 1972 [9 July 1971] 28641/72 Heading A5R [Also in Division B5] A sterile flexible sheet prosthesis 10, having an open pore, tissue-ingrowth-receptive surface 11 and a reinforced backing of smoothsurfaced elastomer 12 is used in surgery for preserving sliding motion between adjacent tissue structures. When placed between two adjacent sliding muscles, tendons or bones (Figs. 2, 3 and 4, not shown) which have been injured it prevents fibrous scarring attachment due to regrowth of tissue. The open pore surface may be polyethylene terephhalate mesh or velour, or polymerized tetrafluoroethylene. The backing may be of silicone rubber reinforced with fibrous or mesh material. Both .the open pore surface and the backing may be of polyurethane. A method of preparing the prosthesis comprises placing a thin sheet of unvulcanized elastomer in surface contact with the back surface of a thin sheet of fabric having an open pore surface, subjecting the sheets to a pressure of from 20-100 p.s.i. at ambient temperature to form a composite sheet and then heating the composite sheet to vulcanize and cure the elastomer. The sheet prosthesis may be cut and shaped to fit the situation in which it is to be placed. When placed in position between two or more surfaces which have a sliding relationship the sheet is sutured to the surface which abuts the open pore surface round the periphery of the sheet, to hold the prosthesis in position while the tissue of the surface is allowed to grow into the open pore surface of the prosthesis.
Patent GB-1459570-A (GB)
Title: Tyre pressure gauges
IPC: G01L17/00
Filed: 1974-06-27
Abstract: 1459570 Tyre pressure gauges D J WALTERS 1 July 1975 [27 June 1974] 28657/74 Heading G1J [Also in Divisions E1-2] A tyre pressure gauge 10 is provided with a resilient clip 12, e.g. of plastics, in which the gauge can be retained when not in use, the clip having a self-adhesive backing 16 by which it can be secured to a convenient surface e.g. a wall or a surface within a vehicle engine compartment or luggage boot.
Patent GB-318409-A (GB)
Title: Improvements in or relating to devices for condensing and winding cotton slivers
IPC: D01G27/00
Filed: 1928-10-05
Abstract: 318,409. Koch, E. Oct. 5, 1928. Sliver - rubbing apparatus; lap - forming apparatus. - Slivers brought from the usual drawing-frame in cans a are drawn out through a guide b by feed rollers c, d and are passed directly to rubbing-aprons m, n, and are then cross wound on bobbins q by a traversing guide o ready for the spinning frame.
Patent GB-736938-A (GB)
Title: Improvements in and relating to electrical contacts and electrical assemblies including such contacts
IPC: H01R33/76
Filed: 1953-10-16
Abstract: 736,938. Holders for thermionic valves. CINCH MANUFACTURING CORPORATION. Oct. 16, 1953 [Feb. 20, 1953], No. 28678/53. Class 38 (1). A pin-receiving contact comprises an elongated, channel-shaped body 9 having adjacent one end, resilient fastening wings 22 extending from the side walls of the body and at the opposite end resilient elements 16 for receiving a pin between them. Several contacts are shown in Figs. 1 and 3 circularly arranged on the underside of an insulating panel 1, the elements 16 being located beneath pin-receiving apertures 5 and the contacts being secured in position by passing the wings 22 through apertures 6 in the panel so that shoulders 23 formed on the wings snap over the upper surface of the panel. The projecting ends of the wings are soldered to printed conductors on the upper surface of the panel.
Patent GB-1438227-A (GB)
Title: Removing ammonia from gases
IPC: C10K1/04
Filed: 1974-06-28
Abstract: 1438227 Removal of ammonia from gases SIMON-CARVES Ltd 28 June 1974 [2 July 1973] 28697/74 Heading C1A Ammonia is removed from gases (particularly coke oven gases) by scrubbing the gases with ammonium bisulphite solution (preferably of concentration 15 to 40 wt. per cent, and most preferably 20 to 30 wt. per cent) and treating the ammonium sulphite solution formed with a combustion gas containing sulphur dioxide to regenerate the ammonium bisulphite solution, a portion of which is drawn off and burnt to provide the sulphur dioxide for the regeneration. The solution to be burnt may be concentrated to 70 to 80 wt. per cent, and the gases formed in burning may be cooled to 300% to 500‹ C. (preferably 350‹ to 450‹ C.) by liquid-gas contact before the gases are contacted with the ammonium sulphite solution.
Patent GB-1312805-A (GB)
Title: Apparatus for automatically and successively opening bags of powder or other particulate material
IPC: B65B69/00
Filed: 1970-06-12
Abstract: 1312805 Bag emptying apparatus H TAKIGUCHI 12 June 1970 [14 June 1969 3 Sept 1969 (2) 30 Oct 1969 24 Nov 1969] 28698/70 Heading B8C Apparatus for emptying a powder containing bag 62 comprises a conveyer 12 for carrying the bag past cutters arranged to open three sides of the bag, a hopper 61 for receiving the bag contents, and a device for removing the empty bag. In the embodiment of Figs. 1 and 2 one side a of the bag is first opened by a circular cutter 38 and the bag is then rotated by contact with a guide 39 so that circular cutters 28, 33 can then open sides c and d of the bag. Further movement of the conveyer 12 causes the upper wall of the opened bag to ride over a guide frame 56 so as to be engaged between a roller 43 and endless belts 42 which comprise the bag removing device. The lower wall of the bag first drops over the end of the conveyer 12 and is then pulled upwardly over guide springs 59 and the frame 56 by continued rotation of the roller 43 and the belts 42. The opened bag is thus unfolded and discharged through an opening 60 in a sheet-like form. A brush 50 below the belts 42 removes any powder adhering to the inside of the bag material. In a second embodiment (Fig. 3, not shown) the cutter 38 is omitted and the cutter 28 is operative to open the side a of the bag whilst the bag is being rotated by the guide 39, the other two bag sides then being opened as before. In a third embodiment, Fig. 4, the cutters 38, 28 are replaced by a cutter 64 carried on a pivotable arm 63 which pivots to carry the cutter 64 across the side a of the bag, the cutter 64 and the cutter 33 then opening the other two sides as before. In fourth and fifth embodiments (Figs. 5, 6 and 7, 8, not shown) the guide 39 is replaced by three vertical rollers (73), and in the fourth embodiment the bag removing device comprises an upper pair of rollers (76), a lower brush roller (77) and horizontal guides (78) for supporting the emptied bag. In the fifth embodiment, the frame 58 is replaced by a guide frame (85) having a guide roller (87) and being pivotally supported on a shaft (86) with a spring (88) acting to maintain the frame (85) horizontal. In a sixth embodiment (Figs. 9, 10, not shown) a circular cutter (90) opens one side of the bag and a second circular cutter (93) is movable transversely across the conveyer 12 to first cut the leading side of the bag and then open the side opposite the side opened by the cutter (90). In a seventh embodiment (Figs. 10, 11, not shown) the bag 62 is horizontally bisected by a band saw (103) which is retracted just prior to reaching the trailing side of the bag, and the upper wall of the bag is pulled up a sloping plate (108) by rollers (109).
Patent GB-883940-A (GB)
Title: Improvements in and relating to the preparation of substituted di-p-xylylenes
IPC: C07C17/12
Filed: 1957-11-14
Abstract: The invention comprises chlorine or bromine substituted di-p-xylylenes with one to three chlorine or bromine atoms on each aromatic nucleus, and their preparation by treating di-p-xylylene at between 0 DEG C. and 20 DEG C. with chlorine or bromine and an iron catalyst in a solvent, such as carbon tetrachloride.  Examples describe the preparation of dito hexa-chloro-di-p-xylylene and di-bromo-di-p-xylylene.
Patent GB-724521-A (GB)
Title: Working metals and other materials by electrical erosion
Inventor: FEFER GREGORY
IPC: B23H7/32
Filed: 1951-12-07
Abstract: 724,521. Electrolytically shaping articles. SPARCATRON, Ltd. Dec. 2, 1952 [Dec. 7, 1951], No. 28772/51. Class 41. [Also in Group XXII] A method of working an electrically conductive workpiece by electrical erosion in which the workpiece is the anode and the tool the cathode is characterized in that the operative surface of the tool has projecting particles of a material whose electrical conductivity is lower than that of the workpiece or the tool, the said particles ensuring the desired gap between the tool and the workpiece when they are brought together and the tool rotated. A tool electrode in the form of a disc 1 has an enlarged peripheral portion 2 and is mounted on a shaft. Diamond, quartz or boron carbide particles 3 are anchored in and project from the face 4 of portion 2 of the disc and said particles lie in a common radial plane. In operation, a workpiece 5, e.g. a bit tipped with cemented tungsten carbide, is lightly pressed into contact with the diamond surface of the rotating disc, the workpiece and the tool electrode being supplied with an electric current of, e.g., 70 amperes and 20 volts. The diamond particles ensure a constant gap while the workpiece is being eroded. The gap may be 0.0002 inch or less. The swarf is removed by a dielectric liquid, e.g. transformer oil or a mixture thereof with kerosene. Where the apparatus is employed for an electrolytic method of electrical erosion the fluid employed is an electrolyte, e.g. water containing an acid. The tool electrode may be of nickel, chromium, iron or cadmium. Nickel-chrome or boron carbide is preferably used when the tool is required for polishing. The working operations referred to above include making holes and cavities in a workpiece, cutting, surface forming, lapping and polishing. The workpiece may be a ceramic or plastic material containing particles of electrically conductive material. Specification 485,565, [Group II], is referred to.
Patent GB-1212456-A (GB)
Title: Improvements in or relating to fountain toys
Inventor: BOOKER NEVILLE JOHN
IPC: A47G33/06
Filed: 1968-06-17
Abstract: 1,212,456. Toys. ADVANCE INDUSTRIAL CO. Ltd. 17 June, 1968, No. 28842/68. Heading A6S. [Also in Division A4] An imitation Christmas tree or a chimney of a doll's house has a hollow trunk 17 up which granulated polystyrene 33 is blown by an electric fan 34 to strike a spinner plate 43 rotatably mounted on the top of the trunk. The plate 43 has curved radial vanes and carries a doll 46 or a star. The polystyrene discharged from the top of the trunk causes the spinner plate 43 to rotate and then falls into a conical stand 12 in which the fan is mounted. The spinner plate may carry bells.
Patent GB-838619-A (GB)
Title: Improvements in and relating to clamping vices
IPC: B25B1/24
Filed: 1957-09-13
Abstract: 838,619. Vices. ZALEWSKI, W. Sept. 12, 1958 [Sept. 13, 1957], No. 28916/57. Class 61. A quick action vice comprises a fixed jaw 15 attached to a base 11 and a movable jaw 29 slidable on the upper surface of the base. A hollow tubular barrel 18 is adapted to slide but not to rotate in a bore provided in a bearing 13 attached to the base 11. The means by which the barrel can be adjusted in the bearing 13 and which constitute the coarse adjustment ofthe jaw 29 consist in providing screw threads 18 on the barrel and a nut 42 screwing thereon, the nut being held in adjusted position against the bearing 11 by a retaining plate 43, screw 48 and clamping nut 50. A thrust rod 25 is slidably mounted within the barrel 18, the ball-like forward end 28 of the rod being held in a seating in the rear face of the jaw 29 by the portions 32 of a divided plate or otherwise. Clamping pressure is applied to the jaw 29 by cam and follower means. The cam 23 turns on a spindle 22 mounted on the end of the barrel 18 in which a spring 27 is mounted to keep the end of the thrust rod in engagement with the cam. A device 57, 58 for setting the lateral position of the work is provided. In a modification a positive action for clamping and a spring return for unclamping is provided. In a modified cam arrangement, Fig. 3 (not shown), the cam is formed by a slot in a cup member at the end of the barrel, the cam follower comprising a radial pin extending from the thrust rod. The movable jaw has sliding rods 51 attached thereto by joints 52, 53 permitting angular movements, the rods working in guideways in the bearing 13. The lower surface of the movable jaw has a curved formation 30 at one edge merging into an incline 31 to allow a slight rock. In a modification, Fig. 4, the underside of the movable jaw 29 has a downwardly projecting abutment 59 for cooperation with the adjustably positioned end 62 of a screwed rod whereby the jaw is maintained in vertical or tilted position.
Patent GB-441304-A (GB)
Title: Improvements in fitting rear carriers, rear bag supports or carriers, rear brakes, rear mudguards, to cycles
IPC: B62L1/16
Filed: 1934-10-11
Abstract: 441,304. Cycle carrier, brake, and mudguard attachments. WRIGHT, E., 48, Alum Rock Road, Saltley, Birmingham. Oct. 11, 1934, No. 29079. [Class 136 (i)] The top-stay or bridge-tube between the back stays of a cycle is provided with an elevated rigid plate or equivalent member formed as a permanent part thereof for the attachment and support of the front members of a luggage or bag carrier, and also, if desired, for the attachment of the rear brake and mudguard. As shown, the bridge member d is formed from a steel blank and comprises a tubular base d<2> and an elevated member e provided with holes e<2>, d<3> for the reception of the hook-like ends f<3> of the front supports of the carrier f, these supports resting on the top of the member e. The tubular part d<2> is also formed with opposite holes g to receive an attachment bolt h of the brake mechanism i. The rear mudguard j is provided with a spring clip j<2> adapted to engage the tubular part d<2>, the clip being formed with a clearance hole for the passage of the bolt h.
Patent GB-1263192-A (GB)
Title: Automatic document feeder
IPC: G03B27/62
Filed: 1969-06-09
Abstract: 1,263,192. Feeding sheets. XEROX CORP. 9 June, 1969 [10 June, 1968], No. 29088/69. Heading B8R. The subject-matter of this Specification is identical to that of Specification 1,263,193, but the claims are directed to the conveyers which feed sheets into the operating (exposure) station and the control means therefor.
Patent GB-1130838-A (GB)
Title: Improvements relating to drive shaft arrangements
Inventor: PURRER JOSEF
IPC: F16D1/10
Filed: 1967-06-23
Abstract: 1,130,838. Shaft couplings. MASCHINENFABRIK FAHR A.G. 23 June, 1967 [24 June, 1966], No. 29099/67. Heading F2U. [Also in Division A1] Shafts 8, 11 are connectible by a claw coupling 9, 10 and are mounted in non-rotary tubes 1, 12 which are connected by a ball joint 6<SP>1</SP> permitting pivoting of the shafts about an axis Z-Z to disengage the coupling. The arrangement is particularly intended for an agricultural machine having implements such as rake heads movable from a working position to a transport position in which the machine is required to have a smaller overall width. The tubes 1,12 are locked in their end positions by a spring pressed pin 16 mounted in a lateral extension 12<SP>1</SP> of the tube 12 and engageable in bores in a flange 2 of the tube 1. To shift from one position to the other the locking pin is withdrawn by moving a handle 18 attached to the pin along a helical slot 19 in the extension 12<SP>1</SP>. In the working position of the machine, the ball joint permits relative pivotal movement of the shafts about an axis X-X. The ball 6<SP>1</SP> has a shank 6 by which it is mounted in the flange 2, and a pin 7 on the shank engages a slot 14 in a plate 13 fast with the tube 12. The slot 14 prevents movement of the tubes about an axis Y-Y but permits limiting pivoting about the axis X-X so that in their working position the shafts can pivot about this axis should the machine run over an obstacle.
Patent GB-152364-A (GB)
Title: Apparatus for maintaining a gas electrode in operative condition
IPC: H01M8/08
Filed: 1920-10-14
Abstract: 152,364. Habricht, F., P. Oct. 14, 1919, [Convention date]. Air or gases supplied; arrangement; electrodes; electrolytes; electrolytes, circulating; moving electrodes; carbon-consuming cells. - A battery such as an alkali metal or carbon-consuming battery in which a gas is supplied to one electrode is provided with means for maintaining intimate contact between the gas, electrode and electrolyte, the electrolyte between the electrodes being kept free from gas. Fig. 1 shows a cell in which the negative electrode consists of a number of fixed silver sheets 3 and a number of silver disks 5 mounted on a shaft 6 which can be rotated by a pulley 7. The electrolyte consisting of fused caustic soda is carried round by the disks 5 and is thus brought into intimate contact with air or oxygen supplied to the container 1. The mixture of air and caustic soda is then drawn between the fixed silver sheets 3. The positive electrode 2 consists of melted sodium floating on molten lead or tin. In the form shown in Fig. 2, the silver sheets forming the negative electrode 3 are all fixed, the electrolyte and gas being circulated between the sheets by means of a pump 10 and tubes 11, 12, an injector 13 for drawing in air, and a non-return valve 14 being included in the tube 11. The pump may be replaced by an injector actuated by the electrode gas.
Patent GB-1472724-A (GB)
Title: Polyimides of perfluoroalkylene ether-linked aromatic tetra carboxylic dianhydrides
IPC: C08G73/10
Filed: 1975-07-11
Abstract: 1472724 Polyimide NATIONAL AERONAUTICS & SPACE ADMINISTRATION 11 July 1975 [11 July 1974] 29187/75 Heading C3R A polyimide comprises repeating units wherein Rf is -(CF 2 ) n - or n is 2 to 10; m is 1 to 10; x and y are each 0 to 3; and x+y=0 to 5. They may be prepared conventionally by reacting the appropriate dianhydride and diamine (the preparations of which are described), optionally together with a trifunctional branching agent, e.g. 2 to 20 equivalent per cent of mellitic trianhydride, but the initial reaction stage to form the polyamide-acid intermediate proceeds more slowly than with conventional polyimides. The polyimide is stated to have suitable properties for use as fuel tank sealants in aerospace structures.
Patent GB-487650-A (GB)
Title: Improvements in or relating to variable condensers
IPC: H01G5/06
Filed: 1937-10-26
Abstract: 487,650. Condensers ; assembling force - fits. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE. Oct. 26, 1937, No. 29234. Convention date, Oct. 26. 1936. [Class 37] [Also in Group XXII] Vanes of an electric condenser rotor, secured to a spindle by a method involving deformation of the vane, have provision for localizing the distortion around the aperture, such as slots 23, Fig. 3, or 6, Fig. 4, or a circular rib pressed out of the vane, in such a way that substantially none of the stresses are transmitted to the rest of the vane. Specification 420,412, [Group XXXV], is referred to.
Patent GB-715490-A (GB)
Title: Improvements in and relating to displaying
IPC: A47F7/18
Filed: 1951-12-13
Abstract: 715,490. Displaying. CORDING, E. M. Dec. 10, 1952 [Dec. 13, 1951], No. 29283/51. Class 3(2) A method of displaying an article of fabric or like material comprises the step of threading the material through two slits A, B in a display board, card or the like bearing a representation of a human figure or other object 3 so that an intermediate portion 4 of the material overlies the representation. Additional slits C-E may be provided through which other parts of the material can be drawn. The representation can be a photograph or be painted or printed and can be in relief if desired. It may also be complete in itself before the material is drawn through the slits.