baber/WOPTO huggingface dataset:
Patent GB-1291569-A (GB)
Title: Improvements in or relating to transistor switching circuit arrangements
Inventor: GERARD ROGER EDWIN JOHN
IPC: H03K17/0424
Filed: 1969-02-06
Abstract: 1291569 Transistor switching circuits MARCONI CO Ltd 17 Dec 1969 [6 Feb 1969] 6542/69 Heading H3T [Also in Division H2] In a switching circuit including a relatively high voltage transistor VT2 and a relatively low voltage switching transistor VT1 in a series circuit with terminals LL connectable to a load, the series circuit also includes a transformer T2 for providing positive feedback base current to the high voltage transistor VT2, a capacitor C1 is connected to be charged by voltage at the base of the high voltage transistor VT2 and to be discharged when the high voltage transistor VT2 is rendered conductive, triggering means T1  is provided actuated by an input switching voltage SS for triggering the low voltage transistor VT1 1 conductive and the triggering means T1 includes a positive feedback means 2T1, 3T1 for supplying base current to the low voltage transistor VT1. When a trigger pulse is applied via T1 the low voltage high speed transistor VT1 switches on and is held in saturation by the base current flowing because of the feedback winding 3T1. The high voltage transistor VT2 is switched on by a positive voltage-across C1, produced via diode D2 from the driving circuit which enables the circuit to be started. C1 discharges as VT2 switches on and base current is then supplied to VT2 by feedback transformer T2. The diode D1 is forward biased to allow current to flow to the base of VT2 but is blocked during the off period. A capacitor C2 reduces the voltage transient across D1. When VT2 switches off there will be a positive charge accumulated in C1 which may be limited by a Zener diode. When the next trigger pulse is applied a large forward bias can be applied to VT2 so that it switches on very quickly.
Patent GB-578924-A (GB)
Title: Improvements relating to loom shuttle pegs
IPC: D03J5/08
Filed: 1944-04-07
Abstract: 578,924. Loom shuttles. LAKELAND, J. April 7, 1944, No. 6549. [Class 142 (iii)) A shuttle peg of the bow spring type is provided with an increased gripping surface by means of shallow inclined grooves formed around the outer surface of the bow spring in addition to those provided on the convex side of the peg described in Specification 3744/14, [Class 142 (iii)]. The grooves on either peg or spring may be inclined in one direction only, Fig. 1, or alternately in opposite directions, Fig. 3. In a further modification a number of grooves may be arranged close together towards the point of the peg, Fig. 6.
Patent GB-1029543-A (GB)
Title: Improvements in and relating to the casting of metal
Inventor: DELAMORE GORDON WILLIAM
IPC: B22D35/04
Filed: 1963-02-19
Abstract: 1,029,543. Moulds. THOMAS MARSHALL & CO. (LOXLEY) Ltd. Feb. 11, 1964 [Feb. 19, 1963], No. 6656/63. Heading B3F. In a method of bottom pouring the metal flows through a horizontal runner which reduces the turbulence of the flow and allows inclusions to rise to the surface to form a layer, and only the metal below said layer is allowed to flow into the mould. The runners 12 are of varying cross-section to reduce turbulence and a barrier 17 holds back the inclusion layer. In a modification, Fig. 3 (not shown), the runner 12 leads from the trumpet to a distributer block 19 from which conventional runners 18 lead to the moulds.
Patent GB-1139288-A (GB)
Title: Vibrator driven oscillating shaver
IPC: B26B19/28
Filed: 1967-02-13
Abstract: 1,139,288. Dry shavers. SUNBEAM CORP. 13 Feb., 1967 [27 May, 1966], No. 6861/67. Heading B4B. [Also in Divisions F2 and H2] A dry shaver comprises a cutter head 11 including an oscillating shaft 28 having an eccentrically mounted crank-pin 38 which is connected with the reciprocating drive arm 56a of a vibrating type motor 18 by means of a connecting-rod 65. The motor includes an oscillating armature 53 supported on a shaft 52 from which extend two T-shaped members 55, one of the legs of which defines the drive arm 56a. The arm 56a is received in a slot 67 of the connecting- rod 65, the slot 67 having convex edges. The arm 56a and armature 53 are held in their neutral position by means of pairs of springs 60.
Patent GB-177504-A (GB)
Title: Improvements in washing and like machines
IPC: D06F37/04
Filed: 1922-03-08
Abstract: 177,504. Clenzall Products Co., (Assignees of Ehnts, F. H.). March 23, 1921, [Convention date]. Washing - machines with closed or enclosed rotary receptacles. - The rotary clothes - receptacle is provided with a pivoted diaphragm which serves as an agitator and squeezer during rotation, and which may also be manually raised to facilitate the removal of clothes. The perforated drum 10 on a shaft 23 mounted in a casing 5 is rotated through a clutch from a bevel-gear loose on the shaft meshing with a gear on a driving- shaft. The perforated diaphragm 45 which is curved and of a width about onethird of the circumference of the drum is pivoted about a shaft 47 supported by extensions 15<a>, 20<a> from the bearing-members 15, 20 of the drum and has at one end integral therewith a lever 53 with a projecting roller 55 which, upon rotation of the drum, strikes a cammember 63 pivoted at one end 57 and held at the other by a tension spring 59, and traverses a slot between this member and a lower fixed cammember 65. To raise the clothes for removal through an opening 11 normally closed by doors 12, the diaphragm is operated by the engagement with the roller of a pivoted lever 72 by means of a handle 74. The drum may have a flattened wall-portion 70 to engage with the free end of the diaphragm to cause the clothes to be deflected thereon, the upper edge of this portion being adjacent to the opening 11, and the diaphragm may be provided with lifters 71. In a modification, the diaphragm may form a part of the outer wall of the drum, resting on stops in the outer position.
Patent GB-1069857-A (GB)
Title: Improvements in or relating to unit furniture
IPC: A47B96/06
Filed: 1966-02-17
Abstract: 1,069,857. Furniture joints. SOC. CIVILE DE RECHERCHES ET D'ETUDES INUSTRIELLES. Feb. 17, 1966 [Oct. 13, 1965], No. 6923/66. Heading A4H. [Also in Division E2] A square section tubular leg 2 and a unit of furniture 1 are joined together by a top clip 3 of truncated V-section and by a bottom clip 4 comprising an arm 10 having an end 11 bent through 60 degrees. The other end 9 of the arm 10 is bent upwards to engage the inside of the leg 2 or it is enlarged so that it can pass through a "button" hole in the leg 2 only when aligned therewith. An arm 6 of the top clip 3 engages the inner surface of the top of the leg and its other arm 7 is inserted through an aperture 8 in the top of the unit 1. The inclined end 11 of the bottom clip engages in an aperture 15 in the unit 1 and a screw 16 passes through an elongated hole 12 in the clip to engage in a hole 17 in the unit. As the screw is tightened the inclined end 11 bears against the edge of the aperture 15 and draws the unit towards the leg and causes the leg to move downwardly so that the top clip 3 also draws the unit towards the leg.
Patent GB-630558-A (GB)
Title: Improved frame for motor cycles and similar vehicles
IPC: B62K11/04
Filed: 1946-03-06
Abstract: 630,558. Motor cycle frames. ING, F. JANECEK FACTORY OF ARMS, Ltd. March 6, 1946, No. 6998. Convention date, Sept. 6, t944. [Class 136 (iii)] In motor cycle frames of the kind in which the frame head 1 is pressed and bent out of a single sheet metal plate, the upper and lower frame carriers 2 and 3 are in the form of a tube of square section welded lengthwise the welds on the tubes being located at the inner side b of the frame so that these welds alternate with the outer welds a of the carriers located at the outer sides. Sufficiently long guideways are pressed out for firmly supporting the upper and lower frame carriers 2, 3 which are welded on to the frame head the outer sides of the guideways being longer than the inner ones. The framehead is triangular in shape at 6 and the steering rod bearings pressed out at the middle part of the framehead have bushes.
Patent GB-726101-A (GB)
Title: An electromagnetic vibrator
IPC: H02K33/06
Filed: 1953-03-13
Abstract: 726,101. Reciprocating motors. KRISTIANSEN, T. P. March 13, 1953 [March 15, 1952], No. 7011/53. Class 35. An electromagnetic vibrator comprises an outer shell 11 to which end-plates 6 are secured, a rectangular laminated yoke 1 located inside the shell, at least two pole legs 4 projecting radially from the inner surface of the shell, a laminated cylindrical armature 2 positioned between a central aperture provided by poleshoes 5 of the pole legs 4, permanent magnets 7 mounted between the latter and the plates 6, and A.C. energized coils 3 surrounding the armature. The polarity of the magnets 7 is such that at their ends touching the plates 6 is the same so that the pole-shoes 5 will have the same polarity but opposite to that of the magnet ends touching the plates 6. The armature 2 is suspended between springs 9, the tensional force of which, when the armature touches one of the plates 6, is substantially equal to the attraction exerted by the permanent magnet field, also these springs are tuned to a frequency higher than that of the A.C. or a multiple of it.
Patent GB-1383232-A (GB)
Title: Sliding gate nozzle for metallurgical vessels
IPC: C04B35/043
Filed: 1972-02-15
Abstract: 1383232 Slide valves for metallurgical ladles DIDIER WERKE AG 15 Feb 1972 [15 Feb 1971 14 Sept 1971] 7046/72 Heading F4B The bottom plate 10 and/or the slide plate 11 of a sliding gate nozzle in a casting ladle are made of fused or sintered magnesia. The latter may have the following composition 90À0-97À0% MgO; 1À0-3À0% CaO; 0À5-1À5% SiO 2 ; 0À5-3À0% Fe 2 O 3 ; less than 0À5% Al 2 O 3 ; less than 0À05% B 2 O 3 ; -the lime/silica ratio being about 2. The grain size should not exceed 3 mm. with a proportion of 25-35% fine grains smaller than 0-1 mm. The magnesia may be impregnated with a carbon containing material or may be mixed with up to 10% chromium oxide.
Patent GB-140087-A (GB)
Title: Improvements in and relating to wing pontoons for aircraft
IPC: B64C35/00
Filed: 1920-03-09
Abstract: 140,087. Curtiss Aeroplane & Motor Corporation, (Assignees of Curtiss, G. H.). Aug. 12, 1916, [Convention date]. Floats for aerial machines. -In an hydroaeroplane having wings 17, Fig. 7, and side pontoons 16, with or without a boat-like main body 15, each pontoon 16 is m a d e of stream-line form with an hydroplane bottom whose resultant centre of lift lies substantially below the centre of lift of the wings. The hydroplane bottom is convex longitudinally, as shown in Fig. 1, and is transversely V-shaped and terminates in a cut-water bow 20 approximately under the leading edge of the wings. The transverse V-shape decreases gradually to flatness at the stern. The framing comprises deck stringers 24, chine stringers 23, side stringers 25, all of which converge on a vertical stem post 22 and a vertical stem 19 which is bent upwards from a curved keel 18; there is a false keel 26 and upper and lower breast hooks 27, 28 and tail-pieces 29, 30 are fitted. Deck beams 31 and side frames 33 support the deck and side planking; the bottom planking is fastened to in-bent floor beams 36. The interior space is subdivided by bulkheads 37, 38. The hull is stiffenect by cross-braces 39, crossed diagonals 40, battens 41 and V-braces 42. The pontoons are secured to the wings by bolts 44 and plates 45. In a modification, shown in Fig. 8, the stem 19' is horizontal, and the sides are vertical and parallel until near the stern, where they converge on a vertical sternpost 22<1>. The bottom is slightly V-shaped, but merges gradually into flatness both at the stem and the stern.
Patent GB-231171-A (GB)
Title: Improvements in crank-shafts for engines and apparatus for the manufacture thereof
IPC: F16C3/12
Filed: 1925-03-18
Abstract: 231,171. Wattel, A. L. F. March 20, 1924, [Convention date]. Crank shafts.- Multiple - throw crankshafts are built up of a number of similar sections, each comprising a central journal, two crankwebs, a large crankpin, and a small crankpin, which is forced into a cylindrical bore of the large pin off the adjacent section, whereby ball or roller bearings of small diameter can be mounted on the crankpins. The sections are aligned and forced together in a press with the aid of a jig. In assembling, a roller-bearing inner race 4, Fig. 1, is forced on the larger crankpin, and the sections 1, 2 are aligned by clamping their central journals in the apertures 29 of split pistons 28, Fig. 5, slidable in a cylinder 27, Fig. 5. Apertures 31, in alignment with the interfitting crankpins, guide the press rods 32, 33. The journal roller bearings 12, Fig. 1, are assembled on segmental rings 13, held together by segmental hoops 14, which are sunk in the segments 13 but project to locate the inner races laterally, the outer races being supported in the engine casing 16 by rings 15. Oil is centrifugally fed to the crankpin bearing rollers 5 by passages 17, the bore 18 of the inner crankpin, a passage 19, a circumferential groove 20, and lateral grooves 21 in the race 4, and radial passages 22. As applied to inclined-cylinder engines, the bearing race 7 of the rod 10 and the races 6, 8 of the forked rod 11 have rounded ends to reduce the area of contact, and the races 6, 8 are provided with shoulders 9. In the case of a single connecting-rod, the race is divided in the middle of its length, or the shoulders are replaced by rings partially sunk in the connecting- rod big-end.
Patent GB-178281-A (GB)
Title: Improvements relating to presses for drying wood
IPC: F26B25/18
Filed: 1921-03-08
Abstract: 178,281. Astin, G. W. March 8, 1921. Presses for holding articles.-A press for maintaining lengths of wood, such as broom handles. blind rollers, curtain poles, or planks, so that they remain straight during drying, comprises a number of rectangular frames containing spaced bars connected at intervals by stays and formed with grooves or recesses to receive the wood, the frames being maintained in correct relative positions by lugs &c. The apparatus shown comprises bars A, Fig. 3, of wood or metal formed with grooves a<1> which receive the poles or rods to be dried and are contained in or connected to rectangular frames a and connected by stays a<2> ; the frames are positioned by lugs &c. a<3>. Pressure is exerted by iron &c. beams C, C<1> resting on the top frame, each beam C' being connected by chains to a lever c<1> one end of which carries a weight c<2> while the other is anchored to a bracket c' on the bottom frame. The lever may be formed with a series of holes to any one of which the upper chains may be connected.
Patent GB-676296-A (GB)
Title: An improvement in or relating to sound recording apparatus
IPC: H04R9/12
Filed: 1949-03-18
Abstract: 676,296. Phonographic recorders. SUGDEN, A. R. March 20, 1950 [March 18, 1949], No. 7389/49. Class 40 (iv). [Also in Group XXXVIII] In a sound recording apparatus having a moving-coil cutter head f, the cutter head is pivotally mounted for movement in a vertical plane on a traversing carriage a and the moving coil i is mounted on a platform g which is pivoted on the cutter head casing so that the coil assembly can rise and fall due to the undulation of an irregular record surface without leaving the magnetic field. In Fig. 1, the cutter head casing e is pivoted at d<SP>1</SP>, and the height of the cutter head above the record can be adjusted by a screw m. The platform g, on which the stylus and moving coil are supported by resilient sleeves g<SP>2</SP> around brackets g<SP>1</SP>, is pivoted at h and the depth of cut of the stylus b is controlled by weights applied at n.
Patent GB-1489986-A (GB)
Title: Adsorbers
IPC: B01D53/04
Filed: 1976-01-26
Abstract: 1489986 Multiple tray adsorber BRITISH CECA CO Ltd 26 Jan 1976 [21 Feb 1975] 7404/75 Heading B1L Apparatus for contacting gas or vapour with a particulate solid material comprises (1) a shell (1) having a gas inlet or outlet port (2); (2) a pillar (3) within the shell having a port (9) communicating with the exterior of the shell, said pillar comprising a hollow interior forming an interior duct having a plurality of apertures or groups of apertures (4) at intervals therealong; (3) a plurality of trays (5) each tray corresponding to an aperture or group of apertures and being position below said corresponding aperture or group of apertures, each of said trays having a lower surface (6) permeable to gas but capable of supporting particulate solid material e.g. activated carbon, and (4) baffles (8) projecting from the central pillar to the periphery of each of said trays so as to enclose the upper surface of each of said trays and said corresponding aperture or group of apertures such that passage of gas between the space enclosed by said shell but exterior of the column and the interior of the column is possible only through a tray and corresponding aperture. A sparge pipe 10 is for the introduction of steam to regenerate the beds.
Patent GB-971912-A (GB)
Title: Apparatus for the treatment of liquid materials
IPC: H01J17/14
Filed: 1961-03-01
Abstract: <PICT:0971912/C4-C5/1> A device for ionizing liquid fuel, and alleged to improve the combustion thereof in an I.C. engine, comprises a casing 4 having a bottom fuel inlet 1 and a top fuel outlet 2 and housing a number of randomly oriented permanent magnets 10 over and between which the fuel is caused to flow, additional ionizing influence being supplied by an electrical potential applied between the earthed casing end cap 3 providing the fuel inlet and an insulated electrode 9 carried by the other end cap 5.  The magnets 10 may be spherical and each may be encased in a non-magnetic tube, Fig. 4. The electrical source may be D.C. and supplied by a vehicle battery, or may be A.C.  A magnetic drain plug 11 provides for removal of ferrous particles in the fuel.  In an alternative construction the fuel inlet and outlet are horizontally aligned in a common earthed cap member sealing the upper open end of a glass or metal bell jar, the cap carrying the insulated electrode which extends into a screening container housing the ball magnets within the jar.  Specification 912,719 is referred to.
Patent GB-307499-A (GB)
Title: An improvement in photographic roll-films
IPC: G03C3/02
Filed: 1929-03-07
Abstract: 307,499. I. G. Farbenindustrie Akt.- Ges. March 9, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Roll films.-To prevent uncoiling of the sensitive film when a spool is being loaded in a camera, two of the turns of the protective paper at or beyond the outer end of the film are stuck together by a temporary adhesive of a nature such that the adhesion is easily overcome. For example, the sticky strip fixing the end of the film to the protective paper may have on the side which is applied to the film a soluble adhesive, and on the other a temporary adhesive of a 10 per cent solution of rubber in benzene. Alternatively the sticky strip may be of tissue paper with an adhesive of rubber and resin on the face which is applied to the film, and a temporary adhesive consisting of a 15 per cent solution of cellulose laurate in benzene.
Patent GB-576090-A (GB)
Title: Improvements in or relating to parachute equipment
IPC: B64D17/52
Filed: 1942-06-03
Abstract: 576,090. Fastenings. BUNN, H. R. June 3, 1942, No. 7539. [Class 44] [Also in Group XXXIII] A quick release device 31 for a parachute pack as described in Specification 339,388, [Class 44], is provided with a domed pressure plate 31 which releases straps 29, 30, upon striking the ground. A forked plate 33 normally prevents accidental release of the straps and is held in position against the pull of an elastic cable 37 by a loop 34 engaging a conical stud on the strap 30 where it is retained by a pin 35, which latter is withdrawn by a cord 36 just before the pack is opened.
Patent GB-483178-A (GB)
Title: Improvements in and relating to elastic couplings
IPC: F16D7/10
Filed: 1937-03-15
Abstract: 483,178. Yielding couplings; slipping clutches. DRAMINSKY, P. March 15, 1937, No. 7553. Convention date, March 26, 1936. [Class 80 (ii)] A yielding shaft-coupling which slips under abnormal load comprises a driven casing 2, having an internal cam surface 19, against which plungers 6, radially slidable in a driving member 17 and carrying anti-friction rollers 10, are outwardly pressed by one or more compression springs 18. The cam is symmetrically shaped and so arranged that, when the parts move relatively away from the rest position shown, in either direction, all the plungers are simultaneously pressed inwards with equal force. The spring-pressure, which is supplemented by centrifugal force, is such that, under normal conditions, the device acts as a yielding coupling, but, under a sudden overload, the rollers can ride over the crests 19a of the cam surface and allow complete relative rotation until the overload is reduced. The spring- pressure may additionally be supplemented by air-pressure, the plungers 6 being an airtight fit in their guides. Air-escape holes at 16 are provided for damping oscillations. The Specification as open to inspection under Sect. 91 describes a modification, Fig. 1 (Cancelled), in which the cam is replaced by an equivalent crank arrangement, comprising crank-shafts 5, journalled in the driven casing 2, their pins 4 passing through the plungers 6. The compressed-air pressure may wholly replace the spring pressure. This subject-matter does not appear in the Specification as accepted.