baber/WOPTO huggingface dataset:
Patent GB-586080-A (GB)
Title: Shielded loop antenna
IPC: H01Q21/20
Filed: 1944-11-02
Abstract: 586,080. Aerials. STANDARD TELEPHONES & CABLES, Ltd. Nov. 2, 1944, No. 21460. Convention date, Nov. 6, 1943. [Class 40 (v)] A shielded antenna for producing a substantially circular radiation pattern has four co-planar radiating members 6, 8, 10, 12, consisting of co-axial conductors about a quarter of the operating wavelength long arranged as a square or other symmetrical closed pattern. Adjacent ends of the radiating members are separated by small gaps 32. Four supporting arms 14, 15, 16, 17 are connected to junction boxes 20 inserted at the centre of each of the radiating members and at their inner ends to a central junction box 18 supported on a mast which may be the shielded dual transmission line feeding the antenna. Adjacent halves of radiating members, e.g. of members 8 and 10 contain inner conductors 26 and 28 respectively which are connected across the gap between them. The supporting arms each contain two conductors ; for example conductors 22 in 15 and 34 in 16, conductors 22 being joined one to conductor 26 and one to the other half of the inner conductor in radiator 8, the connections for 34 being similarly arranged. Lines 34 and the lines in arm 14 are joined in the box 18 and the junction is fed from the dual transmission line ; the lines in arm 14 being crossed so that current flows in the same direction round the whole Figure. Lines 22 and also the lines in arm 17 are terminated in inductive reactances mounted in the junction box 18, the dimensions of the system being such that these inductances may be regarded as equivalent to a capacitive reactance between the inner conductor and the shield at the gaps, thus giving the effect of a loaded line and producing a substantially circular radiation pattern. The inductance terminating lines 22 is set so that the impedance terminating line 28 is purely resistive and the other inductance for an equivalent condition. The inductive reactances at the end of arms 15 and 17 may he variable inductance coils or any other suitable arrangement, e.g. sliding shorts. Specifications 538,036 and 550,009 are referred to.
Patent GB-768101-A (GB)
Title: Colour screens for use in colour photography, colour television, and the like, and method of producing them
IPC: H01J9/227
Filed: 1954-07-23
Abstract: 768,101. Light-sensitive multicolour screens. EMIMETA FABRIKATIONS ANSTALT. July 23, 1954 [Sept. 28, 1953: Jan. 16, 1954], No. 21498/54. Drawings to Specification. Class 98(2) A disc is immersed successively and repeatedly into solutions of film-forming materials of different optical properties, such as gelatine solutions of various colours, drying is effected after each immersion, the multiple layer so produced is stripped from the disc and pared to produce line screens which may be reformed. into a block for paring into point screens, and a layer of light sensitive emulsion is then combined with the several line or point screens, or light-sensitive material may be embedded in coloured gelatine solutions into which the disc is immersed. Photographic applications of the screens so made are described.
Patent GB-1307920-A (GB)
Title: Alarm clocks
IPC: G04C21/18
Filed: 1970-05-05
Abstract: 1307920 Clocks GENERAL ELECTRIC CO 5 May 1970 [7 May 1969] 21511/70 Heading G3T An alarm clock has a seven-day wheel 75 which permits operation of the alarm, without manual resetting, on preselected days of the week. The alarm comprises a resilient vibrator arm 6 driven by leakage flux from a motor core 2 and which is normally restrained by a cranked lever 28. At the preset alarm time, a slotted hour wheel 24 becomes free to move axially toward an alarm set wheel 16 allowing the vibrator arm 6 to push the lever 28 aside. The alarm may be shut off manually by moving a handle 44 on a shut-off lever 36 so that an arm 40 thereof restrains the vibrator arm 6. The day wheel 75 comprises front and rear plastics discs 88, 90 integral with an inner sleeve (87) Fig.13, (not shown) and seven operating pins 78-84 which are detentably movable in an axial direction. An arm 150 is reciprocated by a pin 152 on the hour wheel 24 to advance the day wheel 75. The rear ends of the pins 78-84 form abutments (125) which, in the rearward position of the pins, actuate a pivoted lever 85 and hence a reset arm 46 on the shut-off lever 36 to move the arm 40 away from the vibrator arm 6
Patent GB-518363-A (GB)
Title: Improvements in and relating to the manufacture of hollow articles from paper-stuff or other suspensions of fibrous material in liquid
IPC: D21J5/00
Filed: 1938-07-20
Abstract: 518,363. Moulding pulp. PAPERCRETE, LTD., and NEWBOULD, M. G. R. July 20, 1938, Nos. 21519/38 and 10799/39. [Class 87 (ii)] Relates to the manufacture of hollow articles from paper-stuff or other suspensions in liquid by the introduction of the suspension into an outer foraminous mould 2 associated with a displaceable core member 4 by which fibre deposited on the mould 2 is consolidated and which is contracted to permit the deposition and is employed to effect the consolidation of further layers as described in Specification 420,970. The core member 4 moves upwardly to force the liquid suspension into the mould 2. Fluid pressure is then admitted between the core member 4 and a rubber envelope 9 normally held in tension on the core. The envelope increases in thickness from the top to the bottom to produce a squeegeeing action as it is expanded. The pressure on the fluid in the core compresses air in a reservoir 12 as shown in Fig. 7. When the pressure is reduced, the air in the reservoir expands and causes an annular bag 11 to be inflated momentarily to grip the lower portion of the deposit and to enable it to be transferred to the core. The envelope 9 and bag 11, in some cases with an inner pervious envelope, may be applied to a solid or expandable core.
Patent GB-1090245-A (GB)
Title: Improvements in devices for pressing glued book-covers on previously bound sheet-blocks
IPC: B42C11/04
Filed: 1965-05-21
Abstract: 1,090,245. Bookbinding. H. BIEL, and A. LEUZE, [trading as HANS BIEL]. May 21, 1965 [May 22, 1964], No. 21521/65. Heading B6A. In apparatus for applying first one side cover 3, Fig. 1 (not shown), and then another side cover 3 to the opposite side of a block of leaves or signatures 1 bound together by a spine band 2, the blocks of leaves &c. B, Fig. 2, are fed with their spines facing downwardly to a coverapplying station by known means along a conveyer track comprising a base 10, one upright wall 11, and opposed endless belts 12, 13 which are driven at the speed of the conveying means. At the cover-applying station, there is a frame comprising fingers 14 pivoted to a base 16, and urged backwardly by a spring 24 against a cam 23 to allow a side cover 3, which is already coated with adhesive to be fed downwardly along guides 17 to a predetermined position in front of a block B. The cam 23 is connected to a pin 22, Fig. 3 (not shown), passing through the base 16 and secured to one end of a crank arm 18. The base 16 is also pivoted to one end of a second crank arm 19, and both arms 18, 19 are secured to shafts which are driven from chain gearing 21, and pass through a bearing member 20 which is displaceably mounted on fixed bars 25 by springs 27. The arrangement is such that, as the block B is fed through the cover-applyng station, the cover 3 is fed into position, the cam 23 presses the frame 14 to urge the cover 3 against the block B, and the crank arms 18, 19 move the base 16 and frame 14 forward at the same speed as the block B. The blocks B are held upright at the cover-applying station by a thread 28 which can be moved at the speed of the blocks B. The springs 24, 27 are opposed in action, and the springs 27 ensure a constant pressure on the covers 3 and blocks B. The other side cover 3 is applied by a similar apparatus in a section where the upright wall 11 and pressure frame 11 are on the opposite side of the conveyer track.
Patent GB-188408-A (GB)
Title: Improvements in means for balancing slide valves of fluid pressure engines
IPC: F01L15/12
Filed: 1921-08-15
Abstract: 188,408. Hale, J. W. Aug. 15, 1921. Slide valves, flat.-The slide valves N are actuated by spring-pressed buckles G which engage stationary balancing plates A relatively adjusted by a nut F engaging right and lefthanded screws E thereon, and which plates have slotted flanges B at the top and bottom engaging studs in the valve-chest. In a single-cylinder engine, only one plate A is used, and a stud engaged by the nut F is provided on the valve-chest cover.
Patent GB-852631-A (GB)
Title: Improvements in or relating to slicing machines
Inventor: POLLARD RICHARD
IPC: B26D7/22
Filed: 1955-07-26
Abstract: 852,631. Slicing machines. ELLIOTT BROS. (LONDON) Ltd. Oct. 26, 1956 [July 26, 1955], No. 21625/55. Class 28(2) To prevent accidents the back of the bottom edge of the oscillater gravity feed substance carrier 6 is provided with a shaped shield 8 which masks the cutting edge of the knife adjacent the thickness gauge plate 5 when the carrier has been slid to its exterior forward position. Further the carrier 6 is covered in by wire mesh guards at the top and at its open sides. Such guards at the open side comprise a fixed part 8 near the knife and an upper movable mesh part 10 hinged open at 11 to allow the food block to be placed in the carrier. A catch plate 14 abuts against a flange 12 on the thickness gauge plate to prevent cutting movement until the wire mesh part 10 is closed over the side of the carrier 10.
Patent GB-1515563-A (GB)
Title: Earth leakage and overcurrent protection circuit
IPC: H02H3/10
Filed: 1975-05-20
Abstract: 1515563 Earth-leakage and overcurrent protection TEXAS INSTRUMENTS Ltd 20 May 1975 21668/75 Addition to 1424228 Heading H2K A circuit providing both earth leakage and overcurrent protection for a mains supply 1, 2 comprises a semiconductor switch 54 which actuates a circuit breaker BL when the secondary of either a current transformer T2 in one of the supply leads or a core-balance transformer T1 delivers a signal above a respective threshold. The earth leakage protection arrangement is generally similar to that described in Specification 1,424,228 except that the circuit breaker preferably has normally-open contacts BS1, BS3 and has its coil connected in parallel with the triac S4, to be de-energized on occurrence of a fault. The circuit breaker will thus also trip if the mains supply fails. The overcurrent protection is provided by an additional SCR S3 connected in the gating circuit of the triac S4 and triggered by an overcurrent signal from transformer T2. Auxiliary contacts BS2, BS4 are automatically held open whilst a resetting button is being depressed to reset the main contacts BS1, BS3 to prevent attempts to override the circuit.
Patent GB-625326-A (GB)
Title: Improvements in and relating to washing machines
IPC: D06F13/02
Filed: 1945-08-24
Abstract: 625,326. Washing-machines. BRITISH THOMSON-HOUSTON CO., Ltd. Aug. 24, 1945, No. 21701. Convention date, Aug. 25, 1944. [Class 138 (ii)] In a washing-machine of the kind wherein clothes are washed by agitation in a basket that is rotatable for centrifugal drying and is provided with an overflow for excess liquid, means responsive to the absence of liquid overflow are provided to prevent agitation. The invention is described as applied to the machine disclosed in Specification 625,324, comprising a casing 1, Fig. 1, enclosing a spinner basket 2 within which clothes are washed by the oscillation of an agitator 11, the actuating-mechanism for the basket and agitator being contained within a sealed casing 22. Fluid is continuously supplied to the top of the basket from the base 24 of the casing 1 by a motor-driven pump 20. Excess fluid overflows through holes 3 in the basket into a trough 34 and through apertures 18 in the agitator into a reservoir 38 on the casing 22. From the trough, or the reservoir, or both, the liquid flows through nozzles 51, 50, Fig. 3, into a cup 49, where it forms a vortex 52 before flowing out through a central orifice 53. The cup is carried by an arm 54 hinged to a plate 57 in the base 24 of the outer casing, the arrangements being such that, in the absence of overflow liquid, the cup rises under the action of a spring and opens the circuit of the main motor 48 to prevent actuation of the agitator with consequent possible damage to the clothes through their agitation in a dry state. The water supply to the outer casing is through a pipe 42, Fig. 1, controlled by a solenoid valve 40. The solenoid is in series with a switch opened and closed by the rise and fall of a float 45, Fig. 3, carried by an arm 59 also pivoted to the plate 57, the arrangement maintaining a constant level of fluid in the base of the casing.
Patent GB-1175335-A (GB)
Title: Expander.
Inventor: HAANEN KARL-THEODOR
IPC: A63B21/055
Filed: 1968-05-08
Abstract: 1,175,335. Expander. K.-T. HANNEN. 8 May, 1968 [14 Sept., 1967], No. 21715/68. Heading A6M. [Also in Division E2] An expander comprises a plurality of elastic ropes 1, a substantially U-shaped fastening element 2 secured to each end of each of said ropes and consisting of a web portion two deflectable shanks projecting from the web portion, and hook shaped catch members 4 integrally formed with the free ends of the shanks, and a pair of handles 6 having holes 8 for the reception of the fastening elements such that the catch members bear against the side :of the handle remote from the ropes and the web portions against the side facing the ropes. The shanks and holes of the handles may each have a stepped portion to locate the fastening elements in the handle. The fastening elements are preferably made of acetal resin and the ropes may be rubber ropes or steel springs.
Patent GB-246536-A (GB)
Title: Chenille loom
IPC: D03D39/00
Filed: 1924-09-15
Abstract: 246,536. Bechtold, A. Sept. 15, 1924. Change-box motions. - In a chenille loom, change of shuttle is determined by a jacquard mechanism A, which controls both the shuttlechanging mechanism B and a repeat mechanism C in such a manner that the card d of the jacquard mechanism is only fed forward through one division by the repeat mechanism when, according to the repeat mechanism, another colour is to be thrown. Reference has been directed by the Comptroller to Specification 204,076, [Class 142 (i), Looms, Driving &c.].
Patent GB-752729-A (GB)
Title: Improvements in food mixers
IPC: A47J43/044
Filed: 1954-07-26
Abstract: 752,729. Mixing-appliances. GENERAL ELECTRIC CO. July 26, 1954 [July 27, 1953], No. 21757/54. Class 86. A food mixer has two beaters 13 the shafts of which engage in sleeves 15 on respective drive spindles 12 of the mixer power unit 1, the shafts being detachably held in sleeves 15 by a spring ring 14 through which ears 15<SP>1</SP> on the shaft are pressed when it is inserted. Each beater shaft has a batter guard 16 to prevent material being mixed from entering the sleeves 15. To eject the beaters after use a lever 17 is provided, the lever being pivoted on a pin 18 located in a bottom cover plate 8 between the beater shafts and having a head shaped to define two cam surfaces 19, 20 which overlie the batter guards 16 and which, when the lever is turned, ride against the guards to force the beaters simultaneously downwards, moving the ears 15<SP>1</SP> past springs 14 thus detaching the beaters from the driving spindles. A spring 21 is provided to urge the lever to a position where the cams are out of engagement with the guards 16 and a pin 22 on the lever engages in an arcuate slot 24 in plate 8 to limit the lever movement in either direction. U.S.A. Specification 2,325,434 is referred to.
Patent GB-217619-A (GB)
IPC: C06F1/12
Abstract: 217,619. Bryant & May, Ltd., Rennie, C. O., and Coster, A. V. Jan. 22, 1923. Endless chain conveyers with flap carriers; troughs; guiding; discharging devices. - Match splints which are to be tipped in a match making machine or packed are conveyed from a preliminary straightening device in a mechanical conveyer to a magazine into which they are dropped through a distance not appreciably exceeding the length of a splint. The conveyer is vibrated to complete the straightening of the splints. From a hopper a<1> the splints are fed into a straightening and controlling device whence they pass into conveyer boxes formed by a horizontal guideway and L-shaped plates g pivoted to pins e<2> of endless sprocket chains which pass over sprocket wheels f, f<1>. A revolving brush o removes excess splints from the boxes which proceed to the magazine m over the mouth of which the plates g turn on their pivots causing the splints to slide easily on to those already in the magazine. The conveyer shown is adapted to fill two magazines, alternate boxes being prevented from discharging their contents when passing over the first magazine by means of a number of pairs of gripping fingers p<1>, p<2> carried by adjacent links of an overhead endless chain p. Unengaged plates are tipped over the first magazine by a light spring p<4> so that they fall on to succeeding fingers p<2>. Matches overflowing from the magazines over rounded edges m are carried back to the hopper a. A final straightening of the splints in the conveyer boxes is effected by means of slight horizontal and vertical vibration imparted to the conveyer, the horizontal vibration also being communicated to the magazines.
Patent GB-1467888-A (GB)
Title: Method for the manufacture of dimensionally stable shaped or flat articles
IPC: C04B41/50
Filed: 1974-05-16
Abstract: 1467888 Moulding asbestos INTALITE INTERNATIONAL NV 16 May 1974 [17 May 1973] 21786/74 Heading B5A A shaped or flat article, e.g. a wall panel or ceiling tile, is formed by soaking asbestos paper in a bath containing a mineral acid, e.g. sulphuric, hydrochloric, or phosphoric acid, and applying at least a layer of the soaked paper to a moulding surface before allowing it to dry at room temperature. The article can be reinforced with fibre glass or steel. Cement containing coatings can be applied to the surface.
Patent GB-970697-A (GB)
Title: Method of curing ethylene-propylene copolymers
IPC: C08K5/14
Filed: 1963-05-31
Abstract: An ethylene/propylene copolymer is cured by heating with a free radical source (e.g. dicumyl peroxide) and a promoter comprising nitric oxide and/or nitrogen dioxide, said promoter being adsorbed on a solid, finely divided support, such as silica, a metal aluminosilicate, carbon black or coconut charcoal. Optional ingredients are carbon black, silicates and oils. The products find application as tyres, shoes, hose, clothing, belts, floor covering and moulded goods.
Patent GB-414222-A (GB)
Title: Improvements in telephone systems
IPC: H04B1/58
Filed: 1933-08-03
Abstract: 414,222. Anti - - side tone circuits. BOHNENBLUST, A., 258, Riehenstrasse, Basle, Switzerland. Aug. 3, 1933, No. 21814. Convention date, Aug. 5, 1932. [Class 40 (iv).] In a sub-station circuit comprising a microphone, a loud - speaker and amplifier, and a balancing network, associated with the line by a coupling transformer in a bridge .circuit, the network has an additional inductive coupling with the line so that varying electrical conditions of the line are compensated in the network and the balance is preserved. As shown in Fig. 1, the microphone circuit 3 and amplifier circuit 2 for the loud-speaker are associated with the line a, b by transformer 1, the input to circuit 2 being regulated by potentiometer 10. A balancing network comprising a variable resistance 6 and variable capacity 7 is also connected to transformer 1 and is further connected over variable resistance 9 to the secondary of transformer 8, the primary of which is connected across the line. In a modification, Fig. 2 (not shown), the amplifier is fed by providing transformer 8 with a third winding connected to the junction of the two primary windings of transformer 1. In a further modification, Fig. 3, the compensating transformer 8 is replaced by a fourwinding transformer 28 of which windings c and d correspond to the windings of transformer 8 and a, b are inserted in line b, the amplifier input 2 being taken from the junction point of these windings and from the corresponding point in transformer 1.
Patent GB-814551-A (GB)
Title: Improvements relating to the manufacture of mattresses and other stitched articles
Inventor: SMITH LESLIE JOSEPH
IPC: B68G7/10
Filed: 1956-07-14
Abstract: 814,551. Sewing machines. SLUMBERLAND Ltd. June 28, 1957 [July 14, 1956], No. 21847/56. Class 112 [Also in Group XIV] Seams, presser feet, work-guides, stands. A method of securing together adjacent edges of fabric components, such as the cover 10 and border 13 of a mattress, consists in stitching the fabric around cords 12, 15 to form respective beaded edges 11, 14, and securing the edges together by a sewing machine having means for automatically bringing into correct alignment the beaded edges and for applying a line of stitching 16 through the edges on the inner side of the beads. The machine may be arranged to feed and apply a tape 17 which is folded over the beaded edges and secured by the stitching 16. The mattress is supported on a table top and the machine, in which the needle 24 reciprocates in a direction at an angle of 45 degrees to the upper surface of the mattress, is mounted on guide rails disposed on the table around the mattress. The sewing, on being commenced, continues automatically while the machine travels around the mattress until it again reaches its starting point. The machine comprises an arm 25 disposed at right angles to the direction of movement of the needle. Guide members 26, 27, mounted on the arm, the former being secured by a screw 28, are disposed in advance of the needle to receive the beaded edges and bring them together in correct alignment. Said edges are maintained in alignment by a groove 29 in the presser foot 30, a groove 31 in a flange 32 on a work feeding foot 33, and a shoulder 34 on the arm. The tape 17, if used, is fed to a folding device of known type mounted in advance of the needle.
Patent GB-960821-A (GB)
Title: Improvements in rotary regenerative heat exchangers
IPC: F28D19/04
Filed: 1960-06-22
Abstract: 960,821. Thermal regenerators. SVENSKA ROTOR MASKINER A.B. June 22, 1960 [Dec. 9, 1959], No. 21855/60. Heading F4K. A thermal regenerator rotary matrix is divided by an annular wall 32 into inner and outer zones each containing heat transfer material, and the heat exchanging fluids each enter and leave the matrix at the upper end thereof by way of passages formed in a stationary duct structure 36 located above the rotor, the relative flow direction of the fluids in both the inner and outer zones being in counter flow. In the form shown, the relatively hot inner zone of the matrix including annular walls 32 and 34 is made of refractory preferably ceramic material whilst the relatively cool outer zone has an outer wall of heat insulating material 24 and contains metallic heat transfer material 26. Air to be heated enters the stationary duct structure 36 through a duct 44 of metal and after heating in the rotating matrix is discharged from the structure 36 through a refractory duet 50. Heating gas enters the matrix through a similar duct 48 and is discharged through a steel duct 46 of the structure 36. The " hot " side of the structure 36 is provided with passages 88, 90, 92 for cooling air, this air being thereafter passed into outlet air duct 50 for heated air. The rotor is supported upon a ball thrust bearing 12 carried upon a cradle 16 itself supported by jack screws 18. When the rotor is to be repaired or replaced the jack screws are lowered until the cradle rests upon rails 96, 98 along which the oradle may be moved.