baber/WOPTO huggingface dataset:
Patent GB-761491-A (GB)
Title: Method of and apparatus for the production of cores, shell moulds or the like for casting purposes
IPC: B22C23/00
Filed: 1954-06-23
Abstract: 761,491. Moulding-machines. DEUTSCHE EDELSTAHLWERKE AKT.-GES. June 23, 1954 [June 24, 1953], No. 18401/54. Class 83 (1). [Also in Group XXX] In an apparatus for blowing cores, shellmoulds and cores &c., the compressed-air pipe introduced into the moulding-material container is directed towards a deflector which spreads the compressed-air and produces substantially uniform pressure on the material while suddenly expelling it. The part-spherical deflector plate 7 also serves as a valve for the charging-opening 8 of the container 3, being urged downwardly by a spring-loaded guide 12 while a spring 13 closes a valve 14 in the airpipe 6 to prevent mould-material entering during charging. When pipe 6 is subjected to pressure, the valve 14 lifts and thrusts the deflector-plate against the opening, sealing being completed by the following compressed air. Charging is effected via a filter 10 and a hopper 9. The container 3 is preferably supplied with a regulated quantity of compressed-air, and for this purpose a cylinder 4 containing a piston 15 is situated before the container 3 and connected thereto by the pipe 6 with a cock 23 therein, and to the compressed-air supply by pipes 16, 17 through a cock 18. The initial position of the piston is adjusted so that a predetermined volume of pressure-air is enclosed beneath it, cock 23 being closed and cock 18 open to pipe 17. As cock 23 is opened, cock 18 closes pipe 17 and opens pipe 16 so that the air beneath the piston discharges suddenly into the container 3, the discharge being assisted by pressure on top of the piston. Rubber-buffers 20-22 and a relief-valve 24 are fitted. At the core-box clamping-station, air-vents are provided in the clamping-plates 25, 26, since vents in a heated core-box as used for shell-moulding are stated to become clogged.
Patent GB-829665-A (GB)
Title: Ticket clip for use with peg boards and the like
Inventor: FREEMAN NORMAN
IPC: G09F1/10
Filed: 1957-06-11
Abstract: 829,665. Clips; stud and socket fasteners. HUNTLEY'S (OLD STREET) Ltd. April 1, 1958 [June 11, 1957], No. 18421/57. Class 44 [Also in Group XVIII] A clip for supporting an article upon a peg board 5 comprises a length of metal wire or the like doubled upon itself and formed with a cranked portion 3, 4 at the doubled end, which cranked portion may . be inserted through a perforation 5a to lie behind the board and the other end of one of the limbs being formed as a lateral hook 6 or the equivalent adapted to engage within another perforation 5b to hold the clip in position on the board and the second limb being positioned in relation to the first limb for holding a ticket or other article. In a modification, Fig. 3 (not shown), the hook 6 lies within the,overall length of the outer limb 1.
Patent GB-963032-A (GB)
Title: Improvements in or relating to collapsible ladders
IPC: E06C9/08
Filed: 1961-05-23
Abstract: 963,032. Loft ladders &c. C. G. HARMER. March 22, 1962 [May 23, 1961], No. 18490/61. Heading A6L. In a loft ladder the treads 5 are connected t‹ inclined side members 1, 2 by hinges 6 so that the ladder may be collapsed laterally against the wall 3. The ends of the treads engage in notches in the side members and the treads lie side by side when the ladder is collapsed. The trap door 9 is slid over the opening 4 by a link 12 when the ladder is collapsed. A counter balance may assist movement of the ladder. A loft light may be controlled by movement of the ladder.
Patent GB-633890-A (GB)
Title: Socket for electron discharge tubes
IPC: H01R33/76
Filed: 1947-07-11
Abstract: 633,890. Holders for discharge tubes. STANDARD TELEPHONES & CABLES, Ltd. July 11, 1947, No. 18499. Convention date, Aug. 1, 1946. [Class 38 (i)] A discharge tube 1 is moved into and out of engagement with a socket 13 by supporting means comprising a column 5, a collar 8 carrying the tube and telescoping within the column, and a sleeve 6 rotatable on the column and having a cam slot 7 engaged by a roller 10 carried by a pin 9 in turn carried by the collar, the pin also engaging a vertical slot 11 in the column, so that as the sleeve is rotated, roller 10 moves along the cam slot thereby causing the collar to move in or out of the column. The socket 13 comprises split socket contacts 17 carried by a plate 20 supported above an aperture 16 in a panel 14 by flexible straps 18 and posts 19 which allow the sockets to align themselves with the tube pins 2. An annular ring contact 15 located in the opening 16 contacts a grid ring 12 on the tube. When the pins 2 have been entered in the sockets 17, screws 21 threaded therein are tightened to clamp them on to the pins. Cooling medium may be forced up the column 5 and out through cooling veins 4 round the tube anode.
Patent GB-900260-A (GB)
Title: Improvements in or relating to instrument type moving coil electric relays
IPC: H01H53/015
Filed: 1960-05-25
Abstract: 900,260. Light current relays. SANGAMO WESTON Ltd. May 25, 1960 [June 4, 1959], No. 18515/60. Class 38 (5). [Also in Group XXXVI] A moving coil relay having an additional winding on the coil assembly arranged to be energized when the contacts close so as to increase the contact pressure is provided with two sets of contacts, one set being magnetic. As shown, the coil 10 which may be in series with a photo-electric cell or thermocouple 13 carries a pointer arm 14 comprising two rigid parts 14a, 14b and a helical spring 14c. A magnetic contact 17 mounted on the part 14b co-operates with a magnetized contact 18 and a second moving contact 21 of flexible material, such as platinum-iridium alloy, co-operates with a fixed contact 22. As the coil 10 moves the pointer clockwise a position is reached in which the contact 17 is attracted to snap against the contact 18 and complete the circuit including the load 28, source 26 and the additional winding on the coil assembly, thus urging contacts 17, 21 against contacts 18, 22 and stressing the respective springs. Contacts 21, 22 preferably close after contacts 17, 18, but they may close at the same time or just before the magnetic contacts. Since there will be wiping action between contacts 21, 22 the contact 21 may be given a sharp edge and contact 22 may be made of a harder material such as a rhodium alloy. When the switch 27 is opened so that the additional winding is deenergized the potential energy of the flexed elements 14c and 21 imparts a counter-clockwise movement to the moving coil assembly with sufficient force to separate contacts 17, 18. In an alternative arrangement (Fig. 6, not shown), the arm 14 includes no flexible portion and the magnetized contact 18 is resiliently mounted.
Patent GB-1262979-A (GB)
Title: Improvements in or relating to visual indicator arrangements, especially for pushbutton boards
IPC: H01H13/02
Filed: 1969-04-10
Abstract: 1,262,979. Switch position indicators. HONEYWELL Inc. 10 April, 1969 [29 April, 1968], No. 18523/69. Heading H1N. [Also in Divisions B6 and G5]  An array of push-buttons 12 is provided with a visual indication 28 which becomes visible to an operator only when a respective button is depressed. The indication 28, which is either on the side walls of adjacent buttons or on a surrounding frame 24, may be in the form of an area of a colour or texture distinctive from that of the top surface of the buttons; it may be applied as a reflective coating or be in the form of an electrical illumination. The buttons 12 each form part of respective push-button switch 10.
Patent GB-1142334-A (GB)
Title: Aqueous phenoplast-aminoplast resin binder for mineral fibers
IPC: C08L61/34
Filed: 1966-04-27
Abstract: 1,142,334. Aqueous phenoplast-aminoplast composition. WEST VIRGINIA PULP & PAPER CO. 27 April, 1966 [10 May, 1965], No. 18538/66. Heading C3R. [Also in Division D1] A binder for mineral fibres comprises an aqueous solution of (a) 20 to 60 parts by weight of a thermosetting resin consisting of (i) 10 to 50 wt. per cent dicyandiamide-formaldehyde and (ii) 50 to 90% phenol-formaldehyde; (b) 16 to 50 parts of the free acid form of alkali lignin and (c) 12 to 50 parts of urea, (a), (b) and (c) totalling 100 parts and (c) not exceeding 5 times (a) (i). Excess formaldehyde in the composition may be neutralized with ammonia to form hexamine and additional hexamine may be added. Antioxidants such as phosphates, borates and antimonates may be added to enhance fire resistance. The mineral fibres which may be bonded into mats with the resin may be constituted by various combinations of silica, magnesia, alumina, soda and lime. The binder may be used as an aqueous solution of pH from 7 to 10.
Patent GB-203123-A (GB)
Title: Improved means to facilitate washing the hands and other parts of the body
IPC: A47K7/03
Filed: 1922-07-07
Abstract: 203,123. Weatherill, R. J. H., and Sims, A. E. July 7, 1922. Soap tablets. - An appliance for washing the hands &c. comprises a block 1 of pumice or other stone, natural or artificial, with grooves 2 filled with soap, and preferably arranged transversely to the length of the block.
Patent GB-920577-A (GB)
Title: Nuclear reactor core
Inventor: PREECE GEORGE EDWARD
IPC: G21C15/02
Filed: 1959-06-01
Abstract: 920,577. Nuclear fuel elements. DE HAVILLAND ENGINE CO. Ltd. March 14, 1960 [June 1, 1959], No. 18687/59. Class 39 (4). A nuclear reactor core contains fuel in the form of blocks or pellets having grooved, wrinkled, or otherwise corrugated external surfaces in intimate heat exchange contact with correspondingly corrugated surfaces of spacers in the core. The Figure shows a splined cylindrical pellet adapted to slide into a grooved bore in the reactor core; alternatively, the pellet may have a helical groove and screw into the core. The fuel may be a mixture of fissile material, for example uranium 233 or 235 or plutonium, moderator, for example graphite, and fertile material, for example thoria or uranium 238. The fuel is used in a reactor core as described in Specification 920,576 in which coolant passages are separated from the fuel spaces. The Provisional Specification refers to a corrugated element in a magnesium alloy or ceramic sheath which is in contact with the coolant.
Patent GB-1299244-A (GB)
Title: Improvements in postage meters
IPC: G07B17/00
Filed: 1970-04-20
Abstract: 1299244 Key detent means SINGER CO 20 April 1970 [23 May 1969] 18703/70 Heading G4B Keyboard interlocks.-A postage meter having means to prevent actuation on inadvertently touching the amount keys comprises 4 ordinal rows of nine keys 15, each row having a differential actuator 16, normally held by latch plate 19, and a detent slide 17 which holds down a depressed key and prevents the other keys in that row being depressed. On depression of a key 15 against a spring 35, a tooth 94 on stem 34 engages notch 93 in bail 87, which thereupon pivots about rod 88 so that tongue 90 of bail 87, which is engaged in a slot 91 of detent slide 17, moves the slide to the right. The other bails 87 associated with the slide are thus rotated, bringing their arcuate portions 95 into blocking relationship with the tooth 94 of each non-depressed key in that order. The movement of the detent slide 17 also rotates the three-armed bellcrank 70 about 71 to cause toggle linkage 18 to rotate latch plate 19 clockwise, thereby freeing differential actuator 16. The gap or lost motion between notch 78 and the head 77 of bellcrank 70 when detent slide 17 is in its starting position ensures that differential actuator 16 is not released by any slight, accidental, depression of a key. Differential mechanism.-The movement of the differential actuator 16 to the left under the influence of spring (55, Fig. 4, not shown) is limited by the abutment of extension (42, Fig. 3, not shown) of the depressed key 15 with one of its strop members. Stop members 43-47 are in one plane parallel to the plane of movement of 16, and engage extensions (42) of the odd value keys, these extensions being cut so that they cannot engage stops 48-51, which are laterally offset from stops 43-47, and which engage extensions (42) of the even value keys. Actuator 16 also carries a roller 61 which moves in slot 60 of latch plate 19 when the actuator is released. This movement couples the movement of bellcrank 70, detent slide 17, bails 87 and the depressed key, and locks them in position and prevents depression of the remaining keys in that decade. The movement of each differential actuator 16 sets the value entered on the corresponding pinion 21 (which drives a display wheel 20), and also, via toothed drums 106, in ascending register (10, Fig. 2, not shown) and descending register (12). The highest value (the dollar) decade detent slide 17 has an extension 112 with a notch 114 which is normally occupied by an extension (115, Fig. 2, not shown) of the stem 110 of dollar release key 107, so that accidental entry into the dollar register is prevented, since key 107 must be depressed to free the keys 15 in the dollar decade. Restoration is carried out by rocking segmental rack (116), which rotates pinions 21, thereby restoring the differential actuators 16, latch plates 19 and the bellcranks 70, thus allowing springs (84, Fig. 2, not shown) to return the detent sliders 17 to their starting (inactive positions) and thereby raise the depressed keys 15.
Patent GB-729272-A (GB)
Title: Fuel control system for gas turbines
IPC: F02C9/16
Filed: 1949-07-14
Abstract: 729,272. Gas turbine plant. BENDIX AVIATION CORPORATION. July 14, 1949 [Aug. 10, 1948], No. 18713/53. Divided out of 729,201. Drawings to Specification. Class 110(3). [Also in Group XXIX] A fuel system for a gas turbine plant consisting of a fuel pump discharging to the combustion chamber through a main conduit having a throttle valve and a regulator valve for varying the head across the throttle valve located therein has the regulator valve controlled by means responsive to the turbine inlet temperature to maintain a preselected limit on the fuel flow. The subject-matter of this Specification is substantially the same as that described in Specification 729,201, but the claims differ. Specification 729,300 also is referred to.
Patent GB-381542-A (GB)
Title: Improvements in and relating to automatic firearms
IPC: F41A5/08
Filed: 1931-06-29
Abstract: 381,542. Automatic guns. STALLER, K., 7, U. Lazaretu, Br³nn, Czecho-Slovakia. June 29, 1931, No. 18800. [Classes 92 (ii) and 119.] Relates to recoiling- barrel guns of the kind having on the barrel extension 6 a lever 33 which engages a fixed abutment 37 to impart an accelerated rearward movement to the breechblock 12 after its release from the barrel 1. According to the invention, the accelerating- lever 33 is provided with a controlling surface 30 for engagement with the surface 31 of the member operating the breech block, which controlling surface commences on the axis of rotation 35 of the lever. The accelerating lever is readily inserted in part-circular bearings 44 between the side walls of the barrel extension 6, and is connected by a pin 51 and rod 53 to a recoil and run-out spring device of the kind described in Specification 371,871, the spring of which is additionally loaded when the lever 33 is in action as shown in Fig. 7.
Patent GB-613669-A (GB)
Title: Improvements in electrostatic precipitation apparatus
IPC: B03C3/02
Filed: 1946-06-25
Abstract: 613,669. Electrostatic precipitation. STURTEVANT ENGINEERING CO., Ltd., WAGNER, H. W., and HELLYER, J. H. June 25, 1946, No. 18984. [Class 39 (i)] An electrostatic precipitator comprises a casing 3 having its upper end closed by a plate in which are secured the upper ends of nests 5 of open-ended tubes 4 of hexagonal or other cross section. The gas enters at 14 near the upper end of the casing and circulates around the outside of the nests of tubes, at the same time passing downwards to the lower ends of the tubes ; the gas then passes upwards through the tubes. According to the invention a baffle 22, in the form of a skirt completely open on its underside, projects from the lower end of the nests of tubes to equalize the flow of gas through the various tubes. The baffle may take the form of an inclined portion 21 and a vertical portion 22, as in the Figure, or may be a simple horizontal ledge ; in the Figure a single baffle surrounds all the nests 5. In a modification, Fig. 2 (not shown), each nest 5 has an inclined skirt at the bottom.
Patent GB-223961-A (GB)
Title: Improvements in and relating to resistance control apparatus
IPC: H01C10/20
Filed: 1923-07-24
Abstract: 223,961. Igranic Electric Co., Ltd., (Cutler-Hammer Manufacturing Co.). July 24, 1923. Sets; variable, resistances; potentiometers.- Means are provided to enable one or more additional variable resistances to be connected electrically to and to be mechanically supported by the conducting frame of a self-supporting rheostat adapted to be fixed to a base or panel. In Fig. 3, two forms of additional rheostats are shown, namely, a rheostat 25a comprising a resistance wire 27 wound on a strip 28 of fibre or like material and a rheostat similar to that described in Specifications 195,903 and 216,649, comprising a resistance wire 18 coiled upon a rotatable former 20 mounted on a shaft concentric with that of another independently variable but self-supporting rheostat. The former 20 is mounted in a conducting frame 5 which is supported by a connecting bar 7<a> secured to the self-supporting rheostat by a screw 9. One end of the resistance 18 is in electric contact with the frame 5 and a stationary contact 43 is provided. The longitudinal flanges of the connector 7<a> are adapted to coact with the edges of the frame 5 for maintaining the shafts of the two rheostats in the same plane. The rheostat 25a which is provided with a movable contact 40 is connected mechanically and electricallv by means of a terminal screw 29 about which it is capable of angular adjustment. Another form of additional rheostat is shown in Fig. 2, similar to rheostat 25<a>, but having two points of support comprising at one end a metal grommet 29 and terminal 31 and at the other a screw 35 which passes through a hole 30. Alternatively, a loose coupling may be made by means of a projection 36 which engages a hole in the end of the fibre strip 28. By providing a suitable additional terminal, potentiometer measurements may be made.
Patent GB-494437-A (GB)
Title: Improvements in or relating to filters for use in pumping systems
IPC: B01D35/12
Filed: 1937-07-09
Abstract: 494,437. Filters. WINN & CO., Ltd., C., and HINCHLEY, E. R. W. July 9, 1937, No. 19069. [Class 46] A filter for use in pumping systems comprises a body a having two independent filter chambers through either of which fluid can be directed by means of a two-way valve to an outlet n providing a seating for a check valve p. The upper end of each filter chamber is closed by a detachable plug s carrying a gauze filter t. The valve is operated by a handle w which carries a plate x adapted to engage stops y in the extreme positions of the handle. The plate carries indications denoting which chamber is in use.
Patent GB-730703-A (GB)
Title: Magnetic materials and methods of manufacturing such materials
Inventor: CHARLES LOUIS GUILLAUD
IPC: C04B35/26
Filed: 1953-07-09
Abstract: 730,703. Magnetic compositions. CENTRE NATIONAL DE LA RECHERCHE SCIENTIFIQUE. July 9, 1953 [July 31, 1952], No. 19071/53. Drawings to Specification. Class 38 (2). A mixed ferrite having low hysteresis losses is made by preparing a mixture of ferric oxide with at least two other oxides containing 50-58 mol. per cent of ferric oxide, and heating said mixture at 1150-1280‹ C. for 2-4 hours in an inert gas such as nitrogen with an admixture of 0.01-1.2 per cent by volume of oxygen, so that the final ferrite contains 49.7-50.6 (preferably 49.7-50.3) mol. per cent of ferric oxide, part of the ferric oxide being converted to ferrous oxide. The mixing is carried out in a ball mill with steel balls which increase the amount of Fe 2 O 3  present so that slightly less is originally added than is needed. The heating should not be so great that crystals of a size visible to the naked eye are formed. Examples are described of the production of manganesezinc and manganese magnesium zinc ferrites. The oxides may be prepared by heating oxalates, or in the case of manganese, the carbonates, the starting oxide then being Mn 3 O 4 . The mixture should not contain 0.5 per cent by weight of any impurity, and not more than 0.01 per cent of any of the following : barium, sodium, lithium, chromium, silicon, potassium, strontium, cobalt, lead, boron or titanium. Tables are given showing, for different proportions of MnO, generally though not exclusively between 27 and 38 mol. per cent, amounts of FeO in the ferrites and values of their initial permeabilities, with their temperature coefficients, their Curie points, their values of B max, and their Jordan formula coefficients of hysteresis and eddy current loss. Curves are given, including some showing the tabulated values of these properties plotted against Fe 2 O 3  starting proportions for different values of MnO. Specifications 629,031 and 655,666 are referred to.
Patent GB-588766-A (GB)
Title: Improved means for automatically sampling coal, grain or like granular materials
IPC: G01N1/20
Filed: 1944-10-05
Abstract: 588,766. Sampling granular materials. SEABORNE, A. B. Oct. 5, 1944, No. 19074. [Class 58] [Also in Group XVIII] In a machine for continuously sampling granular materials of the type in which a scoop is caused to cut across a stream of the material, the scoop is given an accelerated motion as it cuts across the stream. In the form shown in Fig. 1, a scoop 1 with a mouth 4 is mounted on a hollow cylinder 2. The scoop and cylinder are freely mounted on a shaft 3 which also carries a screw conveyer 9 operating within the hollow cylinder. By the use of a timing gear 16 the scoop is caused, at pre-determined intervals, to rotate about the shaft 3 and to cut across a stream 5 of pulverulent material passing from a band conveyor 6. The unbalanced weight of the scoop assists in the rapid movement of the scoop across the stream and a ratchet and pawl mechanism (Fig. 2, not shown) prevents the scoop from falling back after its movement. The sample is removed by the screw conveyor and is discharged into a shoot 11. In a modification (Fig. 4 not shown) the scoop may be caused to cut across the stream under the action of a spring. In the form shown in Fig. 6, a sectorshaped scoop 1c rotates about a vertical spindle 3a. The accelerated motion of the scoop across the powder stream 5 is obtained by the falling of a weight 34 mounted on an arm 33, the arm being carried by a sleeve 32 which drives the spindle 3a through bevel gearing 27, 28. In the form shown in Fig. 8, the scoop is pivoted to rock on a shaft 37 and its upper end, containing mouths 1d, is caused periodically to traverse the powder stream under the action of weighted levers 39, 41, which are connected to the timing gear (not shown). In a further modification (see Group XVIII), samples are extracted from a powder stream by a reciprocating tray.