baber/WOPTO huggingface dataset:
Patent GB-633757-A (GB)
Title: Improvements in or relating to self locking electric switches
IPC: H01H13/72
Filed: 1945-05-31
Abstract: 633,757. Keyboard switches. BRITISH N.S.F. CO., Ltd., and SMITH, K. G. May 31, 1945, No. 13668. [Class 38 (v)] A self-locking switch comprises a number of push-rods which can be depressed to bring two separate series of movable contacts arranged one below the other and carried by the rods into engagement with two separate series of fixed contacts. Each rod when depressed is locked in position and released when another rod is depressed. The two series of fixed and movable contacts may be separated by a metal sheet forming an electrostatic screen. The rods 24 are mounted in a framework comprising top, bottom and side members which carry an upper and lower series of fixed contacts moimted on insulating strips 34, 36 which may be separated by a screen 43. As shown in Fig. 2, the arrangement may be duplicated and the locking bars 27 of the two sets of switches A, B may be connected by a rod 29 so that operation of a rod 24 in either set moves the locking bars in both sets. Fig. 3 shows one set of rods 24 with the locking bar 27 which is spring-biassed in one direction and passes through slots in the rods. The bar is provided with hooked portions 32 which cause the bar to move longitudinally when a rod 24 is depressed, the bar then returning to cause the hook to engage a slot 31 in the rod and hold it in the depressed position. Movement of another rod moves the bar to release the depressed rod and cause it to rise to its inoperative position under the influence of a spring 26. Each rod carries two moving contacts 39, 40 which co-operate with two separate series of fixed contacts 35, 37. Specification 522,735 is referred to.
Patent GB-1182668-A (GB)
Title: Improvements in or relating to gear shaping machines
Inventor: PITRA JOSEF
IPC: B23F5/16
Filed: 1967-03-23
Abstract: 1,182,668. Gear cutting. TOS CELAKOVICE NARODNI PODNIK. 23 March, 1967 [26 March, 1966], No. 13728/67. Heading B3L. In a gear shaping machine, the cutter 18 is rotated by worm gearing 15, 16 and tool relief means comprises a reciprocating rod 8 and adjustable means 11, 13, 14 driven by the rod for imparting an axial movement to the worm and thereby an additional angular movement to the cutter 18. The cutter is reciprocated by a crank 1 which also drives a cam 5 engaged by rollers 6, 7 to reciprocate the rod 8. The rod carries a pin 11 engaging an angularly adjustable block 13 which moves a block 14 connected to the worm. A conventional tool-relieving link 21 may be driven by the cam 5 or by another cam and may be disconnected if desired. The block 13 may be adjusted by a rack 22 associated with a spring-loaded rack 25 for eliminating play, the rack 23 being moved by a screw 23 controlled manually or by an actuator 24. In a modification (Fig. 5) hydraulic pistons adjust the block 13 to three predetermined positions.
Patent GB-641128-A (GB)
Title: Improvements in or relating to contact pins for electrical pin-plugs
Inventor: SHOREY LOUIS WILLIAM
IPC: H01R13/68
Filed: 1948-05-20
Abstract: 641,128. Two-part couplings. BRITISH MECHANICAL PRODUCTIONS, Ltd. May 20, 1948, No. 13731. [Class 38 (i)] [Also in Group XXII] A plug pin 1, Fig. 1, of the kind cut from a rod or bar and formed at one end 4 with two or more lateral ears 2 by swaging or pressing, thereby forming a head engageable by constraining means such as the cover 11, Fig. 8, of a plug to hold the pin in the plug base 10, the ears resting on the edge of the hole therein for the pin, has a transverse hole 5 for a wire and an axial hole 6 for a clamping screw 7 provided on the head end. The ears and hole 6 are formed in a single pressing operation by a punch and die (see Group XXII). The pin heads pass through raised bosses 12 on the base. A cartridge fuse may be incorporated in the plug shown, the arrangement thereof being as described .in Specification 628,429.
Patent GB-657312-A (GB)
Title: Improvements in or relating to thermionic valve amplifiers
Inventor: COOPER VICTOR JAMES
IPC: H03F3/44
Filed: 1948-05-20
Abstract: 657,312. Valve amplifying circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. May 20, 1948, No. 13741. [Class 40 (vi)] A two-stage wide-band amplifier which is linear and of low output impedance comprises two pairs of valves V1, V2 and V3, V4, respectively, each pair being in series connection across the H.T. supply. The signal is applied to the grid of the valve V2, which feeds the other valve V1 in the first pair via a coupling condenser K1 connected to a point on a resistance RI between the valves; a tap on the resistance R1 provides bias for the valve VI. A further point between the valves-as shown, the cathode of valve V1-is coupled to the grid of valve V3 of the second pair. The anode of this valve is coupled to the grid of the remaining valve V4 via a condenser K3, the output of the amplifier being taken from a point between the valves V3, V4. Overall feed-back may be applied by connection of a resistance between the output terminal and the grid of the valve V2, Fig. 3 (not shown); alternatively a cathodefollower stage may precede the valve V2, Fig. 2 (not shown), having its anode fed from the anode of the valve V4.
Patent GB-563622-A (GB)
Title: Improvements in or relating to comparators
IPC: G01B3/22
Filed: 1942-10-01
Abstract: 563,622. Comparators. MAURER, J. Oct. 1, 1942, No. 13814. Convention date, Oct. 17, 1941. [Classes 106 (ii) and 106 (iv)] The invention relates to the type of comparator in which an elastic member transmits a, movement of the feeler to a step-up gear mechanism. A rack 4 on the feeler rod 2 meshes with a pinion 5 integral with a drum 9 connected by a spiral spring 10 with a gear train 14, 15, 18 to drive a pinion 19 actuating the usual needle. Pins 25, 26 on the drum 9 normally remain in contact with pins 27, 28 on the gear 14, but on the occurrence of shock loads, separation takes place and the excessive load is taken up by the spring 10. The pins 25, 26 and 27, 28 permit an excessive movement of the feeler 3 equivalent to a half-rotation of the pinion 5 without affecting the needle in its maximum position, which is determined by the contact of a projection 29 of the pin 28 with a stop 30. The mechanism is urged to zero position by a spring 21 acting on a gear meshing with the pinion 19. The rod 2 is guided vertically by an extension 23 engaging a groove 24. The mechanism, excluding the feeler rod, is mounted on a frame 6 which can be lifted from the casing after being returned to align flanges 31 and notches 35. Spring-pressed jaws on the frame normally hold the rim and the glass by engaging in a groove in the rim, Figs. 1 and 4 (not shown). The spiral spring 10 in Figs. 2 and 3 may be replaced by a leaf spring 50, Fig. 5, on a member 48, engaging a pin 51 on a gear sector 52. In Fig. 6 an extension to the comparator comprises an auxiliary feeler 59, the upper end 57 of which engages the feeler 3. Shocks are taken up by a helical spring 61.
Patent GB-1299357-A (GB)
Title: Photographic printing equipment
Inventor: KYTE DEREK JOHN
IPC: B41B19/01
Filed: 1969-03-17
Abstract: 1299357 Copying by scanning K S PAUL & ASSOCIATES Ltd 3 March 1970 [17 March 1969] 13979/69 Heading H4F [Also in Division B6] In a photographic type-composing system wherein a modulated linear trace on a cathoderay tube T is projected on to successive parallel locations on a film F by a moving mirror carriage C in order to assemble characters, additional lateral movement of the linear trace on the tube T is provided with fly-back at the end of a character-producing sequence so that characters (e.g. horizontal rule) can be overlapped for forming a continuous print-out, or so that kerning such as overlap of f and i as shown in Fig. 6 can be acheived. The trace on the tube T is modulated by signals from a photomultiplier (PM, Fig. 4) receiving light from a scanning cathode-ray tube (IT) modulated by a transparent character matrix (M). A circuit for the system includes amplifiers (VDA3-VDA5, Fig. 11) controlling the point size of the character to be formed.
Patent GB-939205-A (GB)
Title: Machine for winding coreless coils
IPC: H01F41/06
Filed: 1962-04-11
Abstract: 939,205. Coiling strand material. E. J. CRUM. April 11, 1962, No. 13983/62. Class 120 (3). [Also in Groups XXII and XXV] A machine for producing a coreless coil 108 of strand material, comprises a stationary drum 14 around which the strand material 29 is wound by a revolving arm 24a, and a peeling device 31 for forcing the resulting coils off the drum and depositing them on a pallet 71, the pallet being lowered automatically when the height of the coil interrupts a light beam between cell units 99, 100. The downward movement of the pallet 71 is stopped when it reaches a level at which the height of the coil 108 no longer interrupts a light beam between a pair of lower cell units 109, 110. The cell units 99, 100 serve to open a valve 98 permitting fluid to escape from a cylinder 84 and so lower a piston-rod 87 coupled by a chain 92 to arms 72, 73 on which the pallet 71 rests.
Patent GB-571702-A (GB)
Title: Improvements in or relating to circular, independent needle knitting machines
IPC: D04B15/58
Filed: 1943-08-27
Abstract: 571,702. Knitting-machines. HEMPHILL CO. Aug. 27, 1943, No. 13997. Convention date, Sept. 5, 1942. [Class 74 (ii)] The cutting and trapping device for the splicing yarn fed to the needles of a circular machine comprises a vertically movable plunger 11 mounted in the latch ring 2 and positioned close to the needle circle. The lower end 68 of the plunger is of rectangular cross section and fits within a slot in a block 66 secured below the latch ring. The splicing yarn is received in a slot 70 and an edge on the block 66 at one side of plunger serves to cut the yarn, which is trapped between the plunger and the block. In one form the lower end 68 of the plunger has a longitudinally extending slot 97, and a thin member is mounted within the block 66 so as to engage in the slot 97 so as to ensure additional trapping of the yarn. The splicing yarn feeder 7 is pivotally mounted below the latch ring so as to swing tangentially to and from feeding position and to have a vertical component of movement so that it moves outwardly and upwardly as it is retracted so that the splicing yarn 6 is guided into the slot 70 of the trapper. The splicing yarn feeder has a hook-shaped end 82 bevelled so as open passing latches or to allow them to pass without damage if they are in such part-closed condition as to strike the feeder. A wire 102 is secured at 103 beneath the bracket 66 and is shaped to guide the withdrawn splicing yarn into the slot 70 of the trapper. The wire 102 is arranged so that partly closed latches pass beneath it. An adjustable stop screw is provided for limiting the inward movement of the feeder so that the splicing yarn can be made to plate on either side of a ground yarn, or between two other yarns.
Patent GB-364484-A (GB)
Title: Improvements in or relating to luminous electric discharge tubes
IPC: H01J61/28
Filed: 1931-05-12
Abstract: 364,484. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House,' Kingsway, London.-(Assignees of Patent- Treuhand-Ges. f³r Elektrische Gluhlampen ; 11, Ehrenbergstrasse, Berlin.) May 12, 1931, No. 14088. Convention date, July 18, 1930. [Class 39 (i).] In a discharge tube having a filling of carbon dioxide with or without a rare or other gas, and a carbonate, such as magnesium carbonate, which when heated either by the discharge or by an auxiliary heater emits further carbon dioxide, a substance which emits oxygen at a dissociation temperature closely corresponding to that of the carbonate employed is mixed therewith to prevent blackening of the tube. Praseodymium oxide, manganese dioxide, and potassium permanganate are mentioned as examples of such substances, and may be compressed with the carbonate employed into small bars which may be heated by an auxiliary heater winding.
Patent GB-274613-A (GB)
Title: An improved flexible and angular coupling
IPC: F16D3/18
Filed: 1926-06-04
Abstract: 274,613. Llewellin, W. M. June 4, 1926. Universal joints.-A universal coupling for shafts consists of two disc-like members, one having a series of radial teeth A, B fitting into recesses in the other, and the engaging faces of the teeth and recesses are curved to a spherical or cylindrical contour, sufficient play being provided to enable the two members to rotate when out of alignment. The peripheral edges of the teeth and the bottoms of the recesses may also be curved.
Patent GB-360882-A (GB)
Title: Improved process of producing nitro substances of aromatic combinations
IPC: C07C205/06
Filed: 1930-05-08
Abstract: In the nitration of aromatic compounds the nitrating acid is of such quantity and composition that the nitro substance is completely dissolved after the reaction is terminated and is separated after cooling in a crystalline condition.  Preferably a nitrating acid is used so that an anhydrous or practically anhydrous acid is recovered. In an example dinitrotoluene which contains trinitrotoluene is dissolved in a recovered acid comprising sulphuric acid, nitric acid and trinitrotoluene and treated with a nitrating acid comprising sulphuric acid, sulphur trioxide and nitric acid and after heating the solution is allowed to cool and crystallize.  The crystals are separated and washed and the recovered acid is in part used for a similar process and impart for nitrating toluene to dinitrotoluene.
Patent GB-1249264-A (GB)
Title: Hydraulic pressure control valve
IPC: F16K11/02
Filed: 1970-03-24
Abstract: 1,249,264. Valves. ALFRED TEVES G.m.b.H. 24 March, 1970 [29 March, 1969], No. 14219/70. Heading F2V. In a control valve particularly for vehicle brake systems an actuated transmission member 10 acts to first close off the connection between the return port 12 and the working port which communicates with space 11 and thereafter moves closure member 4 off the seat 3 to connect the space 11 to an accumulator port 13. Pressure fluid flow to the space 11 acts on the closure member 4 particularly shoulder 15 together with the bias of spring 5 to oppose the input force on member 10. In a modification the spring 9 acts between the transmission member 10 and a closure member mounted with lost motion thereon to engage on the opposite face of a seat engaged by the closure member 4.
Patent GB-261807-A (GB)
Title: Improved method of and means for burning powdered or liquid fuel in furnaces
IPC: F23C99/00
Filed: 1925-05-29
Abstract: 261,807. Hazlehurst, H. E., Margetson, O., and Suffern, E. S. May 29, 1925. Pulverulent and liquid fuel furnaces.-In the combustion of powdered and atomized fuel, the fuel is partly gasified in a primary combustion chamber or generator, wherein the stream is deflected in its path so as to diffuse the fuel within the air current and retard its flow, and without extinguishing the flame the mixture of gaseous and non-gaseous fuel is passed into a secondary chamber wherein combustion is completed. Fuel is blown from a pulverizer A through a pipe E to the primary combustion chamber or generator D and i= discharged therefrom into the secondary combustion chamber H; a trap K receives deposits of clinker. Secondary air is heated in a jacket G surrounding the generator before entering the chamber H. In a modification, the generator is supplied with fuel from an overhead oil tank. The outlet from the generator may be in the form of an extension D<4>, Fig. 3, which acts as a supplementary gasifying chamber.
Patent GB-178020-A (GB)
Title: Improvements in automatic cop replacing devices for multiple shuttle looms
IPC: D03D43/00
Filed: 1921-05-21
Abstract: 178,020. Zell, G. May 21, 1921. Shuttles, changing weft-carriers in, automatically. - A multicompartment cop magazine a is connected by lever mechanism b, c and a shaft d to the dropboxes at the other side of the loom, so as to rise and fall therewith and thus place in position, within reach of the cop-catching arms n associated with the transferring-device g, h, the bottom cop in the particular compartment of the magazine that contains cops corresponding in colour to that in the active shuttle. The exit ends of the various compartments of the magazine are so bent as to open out on a substantially vertical plane. Specifications 7204/09 and 7205/09 are referred to.
Patent GB-1344185-A (GB)
Title: Method and apparatus for controlling the quantity of tobacco  flowing at the output of a cutting system
IPC: A24C5/39
Filed: 1971-05-11
Abstract: 1344185 Apparatus for cutting tobacco HAUNI-WERKE KORBER & CO K G 11 May 1971 [11 May 1970 17 Dec 1970] 14248/71 Heading A4C [Also in Divisions G1 and G3] Tobacco cut by four cutters A... D, Fig. 2, is fed on to a common take-off path 118 and at at least one point on this path the quantity of tobacco flowing is measured and the measurement used to control at least one of the cutters so as to keep the total flow (to a dryer 144) constant. As shown the measurement is made at 151 after the controlled machine D, but alternatively Fig. 1 (not shown) the measuring device is in advance of the controlled machine D. The measuring device also keeps constant the flow (weight) of tobacco delivered per unit time and comprises a conveyor pivoted at its leading end and supported by a spring at its other end. Deflections cause movement of a potentiometer whose output is multiplied with that from a tachogenerator coupled to the measuring conveyor and the product controls the conveyer speed. The signal for controlling the cutter D is taken from the potentiometer or from the tachogenerator. Alternatively in Fig.4 (not shown) the device 151 for keeping the weight per unit time constant does not provide the controlling signal, but this is provided instead by photodetectors (381 a...c) which sense the level of tobacco in a hopper preceding the device 151. The detectors operate via a delay device. CUTTERS. Each cutter, such as 1d, Fig.1a, comprises a revolving drum 10 having cutter blades 15 to which the tobacco is fed by compressing conveyers 111 and 112 whose speed and separation (at the cutting end) is adjustable. For cutter D the control signal controls the speed, with feed back signals from a tachogenerator 124 and from a potentiometer 127 responsive to the conveyor separation. FEEDING  Tobacco is fed to the cutters from a common conveyor 108 and any surplus not picked off by the cutters is returned to the source 141 by conveyors 153, 154, 156, and this surplus is measured at 133, compared with a reference 131 and the difference used to control the speed of a feeder conveyor 142.
Patent GB-278664-A (GB)
Title: Improvements in stereoscopic measuring instruments
IPC: G01C11/00
Filed: 1927-05-27
Abstract: 278,664. Hugershoff, R. Oct. n, 1926, [Convention date]. Stercoscopic apparatus. - In the double eyepiece systems of stereoscopic measuring instruments there is provided a change-over device by which reflectors belonging to one half can be introduced into the path of the rays of the other half. The movable prisms 8, 8' are mounted on racks 11, 11' operated by a handle 9, so that they may be changed from the position shown, in which the view is stereoscopic, to positions in which each prism is in the path of the rays of the other eyepiece and the vision is pseudo-stereoscopic.
Patent GB-596782-A (GB)
Title: Electric water heater
IPC: B05B1/24
Filed: 1944-07-27
Abstract: 596,782. Heating liquids by passage of current. HUGHES, C. L. (Drabble, D. S., Drabble, E. J., and Zarate, P. O. de.). July 27, 1944, No. 14351. [Class 39 (iii)] In an electric water heater, the length of current path and hence the temperature of the water are adjusted by rotating electrode plates 11, carried by an inner tubular member 4, relative to fixed electrode plates 3 secured to an outer tubular casing 1. Water enters through an inlet 22, is heated in the annular space between the tubular members, and then flows through openings 8, 9 into the interior of the member 4 whence it is discharged through a shower cone 17. An outlet duct 20 ensures that the heater is drained and the current thus cut off when the supply of water is stopped. The inner tubular member is rotated by means of a handle 21, movement being limited by a stop 24 sliding in a channel 23. A coiled spring 15 maintains electrical connection between a contact stud 13 and a contact plate 10 bridging the metal or carbon electrode plates 11.
Patent GB-709936-A (GB)
Title: Improvements in or relating to fire extinguishers
IPC: A62C11/00
Filed: 1951-06-18
Abstract: 709,936. Preventing corrosion in fire extinguishers. HUTHSING. C. K. June 18, 1951. No. 14378/51. Class 123(1) In a fire extinguisher comprising a casing 12 filled with a substantially non-aqueous liquid such as carbon tetrachloride, corrosion due to traces of water and acid in the liquid is prevented by mounting a solid magnesium member 26 within the casing. The member 26 may be a tubular sleeve encircling the syphon tube 20 of the extinguisher.
Patent GB-553239-A (GB)
Title: Improvements in or relating to back-pedalling brakes for cycles
IPC: B62L5/00
Filed: 1941-11-07
Abstract: 553,239. Coaster hubs. BENDIX AVIATION. CORPORATION. Nov. 7, 1941, No. 14396. Conn vention date, Dec. 12, 1940. [Class 136 (ii)] [Also i Group XXXIV] A back-pedalling hub brake comprises a stationary helical brake member 4 which is adapted to be expanded into frictional engagement with the interior of the hub 1 and has a smaller co-efficient of thermal expansion than the hub, so that there is less tendency for the brake to jam when it becomes hot. In the construction shown the brake member 4 is formed of metallic layers 36, 37 of which the outer or bronze layer 36 has a higher co-efficient than the inner or steel layer. The driving sprocket 28 forms a nut for a rotary and slidable screw member 24 having a clutch cone 33 adapted to engage a clutch surface 3 on the hub 1. When the sprocket is rotated forwardly, the member 24 is held from rotation at first by the drag of a spring 26 and is moved to the right to cause the clutch members 33, 3 to engage and drive the hub. When the sprocket is held stationary the clutch disengages and the hub runs freely. Backward rotation of the sprocket causes the spring 26 to act as a clutch between the member'24 and an abutting non-rotary slidable member 19 and thus the member 24 is prevented from rotation and moves to the left pushing the member 19 to the left also. The member 19 screws into a rotary non-slidable nut 21 which is rotated by the axial movement of 19, so that a lug 22 on the nut bears against one end of the helical brake member 4 and expands the latter into engagement with the hub, the other end of the brake member being held by a lug 16 on a stationary member 5. The member 5 is held fast by means of the usual anchor arm 15 secured to a member 9 having a tongue and groove connection 12 with the member 5. The slidable member 19 is prevented from rotation by the engagement of a square 18 thereon with internal teeth 17 on the member 5, adjustment of the parts being effected by withdrawing the square 18 and re-inserting it in the teeth 17 at a different angle.
Patent GB-1248271-A (GB)
Title: Novel catalyst and process for the preparation of trans-polypentenamers
Inventor: PAMPAS GOTTFRIED
IPC: C08G61/08
Filed: 1969-03-20
Abstract: 1,248,271. Three-component cyclopentene polymerization catalyst. FARBENFABRIKEN BAYER A.G. 20 March, 1969 [6 April, 1968], No. 14593/69. Heading C3P. Trans-polypentenamer is obtained by polymerizing cyclopentene in an inert hydrocarbon in the presence of a catalyst comprising (a) a tungsten salt, (b) an epoxide and (c) an organoaluminium compound. Conventional Ziegler polymerization techniques are employed. In the examples, homopolymers of cyclo-pentene are obtained using (a) WCl 6 , (b) epichlorhydrin, propylene oxide, phenoxy-propylene oxide, epibromohydrin, styrene oxide, and 1-butylene oxide, and (c) (i-C 4 H 9 ) 3 Al or Al(C 2 H 5 )Cl 2 . In some examples, the starting monomer contains as impurities, cis-pentadiene-1,3, trans-pentadiene - 1,3, 2 - methylbutene - 2 and isoprene, and the polymerization terminated using bisphenols, ethanolamines, and ethanol.