baber/WOPTO huggingface dataset:
Patent GB-318307-A (GB)
Title: Improvements in and relating to blades for scissors, shears and the like
IPC: B26B13/04
Filed: 1928-06-05
Abstract: 318,307. Boyd, J. H. C. June 5, 1928. Scissors, shears, &c.-A detachable blade 10 for scissors, shears, and the like has a concave working-Surface 16 from the pivot 13 to the tip 15 and a convex surface from the pivot to the heel 17. The blade may be connected to the carrier 19 by a groove engaging a lug 20 on the carrier and by a tongue 12, as described in Specification 290,307. The under surface of the blade may be flat or, as shown in Fig. 8, may be curved to follow the curve 16 on the upper surface and to engage a corresponding surface on the carrier. The concave surfaces restrict frictional action between the blades and the convex surfaces at the heel, employed in combination with cone looseners in the pivot, press together the cutting edges of the blades. The surfaces may be stamped, pressed, or rolled to form, and finished by grinding. Specification 290,522, [Class 65 (ii), Hinges &c.], also is referred to.
Patent GB-184632-A (GB)
Title: Improvements in devices for playing games of skill
IPC: A63F9/02
Filed: 1921-06-13
Abstract: 184,632. Malouf, J. G. June 13,1921. Table games.-Relates to a device of the type in which a movable element such as a model aeroplane depending from a support and driven by propelling means is adapted to carry and to release objects for dropping to the ground, and consists in effecting the release in two steps by the propelling means, the first on starting and the second on stopping. As shown, the device comprises a model aeroplane 10, Fig. 1, suspended from two wires 13, 14 which also serve to carry power from a supply 52 to a motor 17 in the aeroplane. The motor shaft 18 is provided at its outer end with a thimble 20, Fig. 2, which carries a sleeve 23 and propeller 19. The sleeve 23 is a loose fit on the thimble 20 and relative motion is allowed by a pin and slot joint 26. The trigger 41 of the bombdropping device is connected to the sleeve 23 through a rod 32 by the engagement of a yoke 30 with the flanges 29. When the switch 57 is closed the propeller revolves and causes the sleeve 23 and the trigger 41 to move forwardly and the bomb 11 to drop from pin 40 to pin 39. On opening the switch the trigger returns and the bomb is released. The apparatus may be modified to carry a number of bombs and release them at intervals.
Patent GB-941294-A (GB)
Title: Improvements in or relating to the dyeing of shaped articles of polypropylene
IPC: D06P1/651
Filed: 1962-04-30
Abstract: Polypropylene is dyed in a liquor containing at least one disperse dye and an alkyl phenol the alkyl group of which contains at least 6 carbon atoms, e.g. 8 to 12 carbon atoms.  The alkyl phenol may be present in an amount of 0.1 to 1.0% by weight of the dye liquor.  The polypropylene may be in the form of moulded articles, films or textile materials.  Dispersing agents may be present in the dye liquor.  In examples the alkyl phenols used are para-nonyl phenol, para-dodecyl phenol and octyl phenol.
Patent GB-109158-A (GB)
Title: Improvements in or relating to Means for Raising or Lowering Ships' Boats.
Inventor: RYDELL CARL
IPC: B63B23/04
Filed: 1916-11-15
Abstract: 109,158. Rydell, C. Nov. 15, 1916. Life-boats.-Nested life-boats are fitted with bulkheads 3 adapted to slide in packed guide-ways and which form with deck-plates 4, air-tight buoyancy tanks. Longitudinal airtight tanks are also arranged outside the boat.
Patent GB-205531-A (GB)
Title: Improvements in or relating to humidifying apparatus and automatic control therefor
IPC: D06B23/28
Filed: 1922-06-13
Abstract: 205,531. Arcy, G. W. d'. June 13, 1922. Fluid-actuated valves.- A water control valve 40a in a humidifying system comprises a pressure chamber communicating with a pressure fluid pipe and a spray nozzle, and a spring- pressed plunger valve 47 associated with a flexible diaphragm 44 forming one wall of the chamber and normally closing a port 48 in a pipe 40 leading from a water supply pipe. The combined pressure of the water and fluid is sufficient to open the port and admit water to the spray nozzle, and automatic means are provided to shut off the fluid pressure and so close the port when the humidity rises beyond a predetermined amount.
Patent GB-857292-A (GB)
Title: Improvements relating to hollow turbine or compressor blades
Inventor: HORNE CAMPBELL CLOUSTON
IPC: B21C23/16
Filed: 1957-05-23
Abstract: 857,292. Making turbine or compressor blades; extruding. WIGGIN & CO. Ltd., H. May 20, 1958 [May 22, 1957], No. 16413/57. Addition to 830,472. Classes 83 (2) and 83 (4). A turbine or compressor blade with longitudinal cooling passage is made by drilling a billet from opposite ends to provide larger holes at one end and smaller intersecting holes at the other end, the holes lying on a common plane, filling the holes with a removable filler, partially extruding the billet through a die whereby the extruded portion 5 has the desired cross-sectional area of the blade proper and the larger holes therein lie substantially in a straight line, Fig. 8, and thereafter shaping the blade to the desired aerofoil shape with the holes lying on a curve. The latter is done by forging. The extruded blank may be tapered longitudinally by machining or gap rolling before forging. Specifications 827,289 and 840,665 are referred to.
Patent GB-783498-A (GB)
Title: Improvements in or relating to underwater protective housings for photographic roll film cameras
IPC: G03B17/08
Filed: 1954-06-03
Abstract: 783,498. Photo - engraving process. HEIDECKE, R., and FRANKE, H., [trading as FRANKE & HEIDECKE FABRIK, PHOTOGR. PRAZISIONS-APPARATE]. June 3. 1954 [July 1, 1953; July 2, 1953], No. 16436/54. Class 98(1) A water-tight housing for a twin-lens reflex camera is provided with a rearwardly and upwardly directed viewing window through which the ground glass screen of the camera can be observed. As shown, the housing 1 is provided with a cover 10 in which is a viewing window 12 which consists of a plane-convex lens. Inside the cover 10 is a roof-edge prism 14 which enables the ground glass screen 8 of the reflex camera to be seen through the window 12. The reflex camera is fitted to the cover 10 by removing the rear wall of the light hood 9 and sliding the front wall of the hood rearwardly over prism 14 until projections 16a on the frame 16 which carries the prism 14 engage in cutouts 17 in the light hood. The rear of the camera is then swung upward until a projection 19 on the camera engages a latch 18. The housing is fitted with a direct vision view finder comprising a front frame 101 with two resilient side arms which fit in bores in the front of the housing and a sighting frame 110, which is vertically adjustable on rods. 113. Specifications 783,501 and 783,502 are referred to.
Patent GB-638171-A (GB)
Title: Improvements in, or relating to, rotary hearth furnace drives
IPC: F23H9/02
Filed: 1947-06-21
Abstract: 638,171. Rotary hearth furnaces. KEENER, S. F., (trading as SALEM ENGINEERING CO.), June 21, 1947, No. 16443. Convention date, Dec. 22, 1942. [Class 51 (ii)] [Also in Group XXX] Hearth driving mechanism for a rotary hearth furnace having a rotatably mounted frame for the support of the hearth comprises in combination a circular rack gear secured to said frame, a drive shaft journalled for rotation about a fixed axis, a cradle journalled on said drive shaft for pivotal movement about said axis, a pinion gear journalled on said cradle and adapted to mesh with said rack gear, means establishing a driving connection between said shaft and said pinion gear, and means to move said cradle about said axis in accordance with the interval existent between said axis and the adjacent portion of said rack gear whereby said pinion gear is maintained in proper mesh with said rack gear. A rotary annular hearth 18 is supported on a frame 19 movable on rollers 20 on a circular track 21. Depending from and secured to the outer edge of the hearth frame 19 is a circular member 22 having an outwardly extending radial flange 24 and having secured to its lower surface a rack 25 extending completely around the hearth frame. This is engaged and driven by a pinion 37 mounted in a cradle 31 pivotally journalled on a drive shaft 28, gears 33, 34 transmitting drive from the shaft 28 to the pinion 37. The cradle 31 has rigidly secured thereto an upwardly extending member 35, in the upper part of which is journalled a roller 36 adapted to engage the top surface of the flange 24 ; thus any vertical distortion in the frame will tend to lift or lower the roller and with it the cradle so as to keep the pinion 37 in contact with the rack 25. The rack and pinion are made sufficiently wide to allow for a certain amount of Horizontal distortion of the frame 19.
Patent GB-515086-A (GB)
Title: Improvements in or relating to watertight control boxes
IPC: H01H21/08
Filed: 1938-04-22
Abstract: 515,086. Snap - action switches; watertight switches. PAINE, H. SCOTT-, and BULL, V. G. April 22, 1938, No. 16502/39. Divided out of 515,050. [Class 38 (v)] A watertight control box encloses a part to be rotated from the outside by a rotatable member formed with a flat face parallel to a flat face of a wall of the box, a watertight joint being provided between the two faces. A cylindrical casing 41 has flat end plates 42, 43 through the former of which passes a spindle 44 operated by a handle 60 with a thick flat part 46 between a face 47 of which and the plate 42 is a ring 49 of diamond cross section engaging V-grooves to form a watertight joint and a bearing. Inside the casing, the spindle 44 carries a member 56 having conducting strips which engage fixed contact strips 54, 55, and also a square block 57 with which engage leaf springs 58 to give a quick make and brake, and locate the spindle 44. A watertight gland 59 is provided for the leads, and the casing is not only watertight but is fully screened against interference with radio circuits. Specification 515,050 is referred to.
Patent GB-1138638-A (GB)
Title: Magnetic amplifier for algebraically summating direct currents
IPC: G06G7/14
Filed: 1966-04-15
Abstract: 1,138,638. Summation circuit. INTERNATIONAL STANDARD ELECTRIC CORP. 15 April, 1966 [22 April, 1965], No. 16528/66. Heading G4G. [Also in Division H3] A circuit algebraically summing direct currents comprises a transformer T 1  with a saturable magnetic core having a rectangular hysteresis loop; equal voltage sources U 1 , U 2  connected in series being connected to alternately energize winding B to saturate the core in opposite senses over PNP transistor V 1  and PNP transistor V 2 ; the energization currents being measured by instrument J A  returned to the junction of the voltage sources. Windings A, C coupled to the saturable core pulse the transistors to conduct and cut off alternately as a periodically operating changeover switch, and tapped windings E, F are energized by input currents J E1 , J E2 ; the tappings being adjustable to multiply each input by a selected coefficient. It is shown that for zero inputs the instrument J A  reads zero, and when inputs are applied it reads to represent the sum of the input currents multiplied by the respective coefficient. A transformer X whose primary is connected between the junctions of the voltage sources and the collectors of transistors V 1 , V 2  has a tapped secondary winding connected in series in the input current to winding D to balance out any A.C. flowing in the windings D, E and their signal sources due to the periodic switching of V 1 , V 2 .
Patent GB-721324-A (GB)
Title: Improvements relating to hydrodynamic bearings
Inventor: MOHRENSTEIN ALEXANDER VON
IPC: F16C17/03
Filed: 1952-07-01
Abstract: 721,324. Bearings. SCHAFER, G., and SCHAFER, O., [trading as KUGELFISCHER G. SCHAFER & CO.]. July 1, 1952. No. 16585/52. Class 12 (1). A bearing of the pivoted or tilted pad type is described for a journal bearing having a split outer ring 1 between which is interposed sealing material 7, a load distributing member 2, a liner or layer 3 of elastic material such as a phenol or cresol-formaldehyde condensation product or hard paper about 1 mm. thick, intermediate pieces 4 supported by prism joints on the member 2, and felt or other porous material 6 containing oil. When the shaft 5 rotates at velocity u, Fig. 6, the pieces 4 pivot about the prism joints and provide wedge shaped oil filled clearances between the elastic liner 3 and the shaft, the pressure curve p(x) for the load on the pieces 4 being in the form of an isosceles triangle, i.e. the distribution of the load along the bearing surface of the liner 3 is a maximum in the middle and zero at both ends. The elastic liner 3 is diagrammatically represented as a series of springs pressing against a thin flexible sheet, x being the coordinates of the liner in the direction of friction. It is stated that no pressure gradient is present in the direction transverse to the direction in which the friction acts, the elasticity of the liner 3 allowing its edges to contact the sliding surface and prevent the outflow of oil at the edges. The bearing should operate with the layer of lubricant having a thickness of 2-5 microns, the thickness of the layer of oil behind each support 2, 3, 4 (in the direction of rotation) being approximately half as thick as the average thickness of the layer in front of the support.
Patent GB-670200-A (GB)
Title: Improvements in or relating to the packeting of pipe tobacco, cigarettes and other goods
IPC: B65B31/06
Filed: 1949-06-22
Abstract: 670,200. Vacuum packaging. WARREN, J. D. N. June 15, 1950 [June 22, 1949], No. 16632/49. Drawings to Specification. Class 94(i) Goods such as pipe tobacco, cigarettes,. food-stuffs and pharmaceutical products arepackaged under vacuum by placing them in a wrapper comprising two opposed sheets of pliable material capable of being heatsealed or pressure-sealed, inserting a vacuum nozzle between the edges of the sheets, heat-sealing or pressure-sealing the sheets together at their peripheries so that the nozzle remains in communication with the interior of the wrapper, exhausting air from the wrapper, further heat-sealing or pressure-sealing the wrapper so as to isolate the nozzle from the interior thereof and withdrawing the nozzle. The opposed sheets may be formed by folding a single sheet of wrapping material along a middle line. The nozzle is preferably inserted adjacent one corner of the wrapper so that it may be isolated by a seal extending across the corner. The goods may be enclosed in a flat tin before being placed in the wrapper.
Patent GB-670732-A (GB)
Title: Improvements in or relating to flame arresters more particularly for internal combustion engines
IPC: F01N3/06
Filed: 1949-06-23
Abstract: 670,732. Flame arresters. STADDON, F. J., and RUSTON & HORNSBY, Ltd. June 23, 1950. [June 23, 1949] No. 16661/49. Class 47 (ii). [Also in Group XXVII] Each of a number of annular plates 5 assembled in a pack and clamped between end plates 10, 11 has outwardly extending lugs a . . . d, which may be spaced unevenly angularly to prevent incorrect assembly on the studs 7, one or both faces of which are disposed in a plane or planes slightly above but parallel with the annular surfaces of the plates so that the faces of the lugs abut to provide annular gaps g between adjacent plates for the radial flow of gaseous fluid. Studs 15 through the plate 10 permit the device to be removable as a whole. The plates may have a polygonal outer periphery and three or more lugs. The device may be applied to the air or exhaust passages of an internal-combustion engine and each end plate may have a central opening 17. Specifications 417,049, [Group XXVIII], 515,347, [Group XII], 542,020, [Group XXVIII], and 631,111, [Group XII] are referred to.
Patent GB-663972-A (GB)
Title: Improvements relating to electrical protecting devices
Inventor: HARDMAN THOMAS KENNETH
IPC: H01T4/10
Filed: 1949-06-23
Abstract: 663,972. Protective arrangements. SIEMENS BROS. & CO., Ltd. June 23, 1950 [June 23, 1949], No. 16724/49. Class 38 (iv). To avoid burning of the edges of the perforations, in a voltage limiter comprising metal electrodes separated by a perforated insulating material and moulded into insulating material to form a sealed discharge gap, one or both of the electrodes are provided with projections extending into the perforations in such a way that the points of closest proximity between the electrodes are removed from the edges of the perforations. A number of projections may extend through one perforation. In the construction shown, a slotted mica or like sheet 3 separates electrodes 4 formed by opposed faces of two backto-back channel members 1, the whole being held together by moulded plastic insulating material 2 which extends through slots in the side walls of the members 1. A projection 5 is provided on each electrode so as to extend through the slot 9 in the sheet 3 towards the flat face of the other electrode.
Patent GB-1383086-A (GB)
Title: Electromagnet control system
IPC: H03K17/72
Filed: 1972-04-12
Abstract: 1383086 Rapid energization of magnets LUCIFER SA 12 April 1972 [23 April 1971] 16796/72 Heading H2H [Also in Division H3] A system for energizing an electromagnetic device comprises means whereby the device is initially energized at a high current value which energization is reduced to a lower current value a predetermined time after the initial energization. An electromagnet is provided with two energizing windings B1, B2 both of which are energized from an A.C. source ab by way of a bridge rectifier 1, the output of which is unsmoothed. Upon closure of a switch S the winding B2 is energized directly by the rectifier 1 whereas the winding B1 is energized by way of a thyristor T2 which becomes conductive immediately the switch S is closed. Thus initially the two windings are energized together to provide the electromagnet with a high value of energization. As the switch S is closed a capacitor C begins charging over a resistor R 1  until it becomes charged sufficiently to cause a Zener diode Z to break down thereby applying a signal to the base of a transistor T1 to cause it to conduct. With the transistor T1 conductive the thyristor T2 turns off at the next excursion to zero of the output of the rectifier 1. Thus the winding B1 is de-energized and the energization of the electromagnet is maintained at a lower value by the winding B2 only. In a second embodiment the electromagnet has one winding only, the high energization being produced by energizing the winding continuously from the output of the rectifier and the low energization by energizing the winding during parts only of the half cycles of the output of the rectifier, the winding being energized by the thyristor as in Fig. 1 the thyristor being gated intermittently by a pulse generator 2 during the low energization mode.
Patent GB-902994-A (GB)
Title: Improvements in and relating to record sensing devices
Filed: 1961-05-09
Abstract: 902,994. Sensing record tapes. WARNER & SWASEY CO. May 9, 1961 [Aug. 19, 1960], No. 16827/61. Class 106 (1). A record tape 12, Fig. 2, on which the data is arranged in successive blocks or frames is sensed a frame at a time by an array of photocells 21, one for each possible hole position in a frame which respond to light passing from lamp 31 through the holes in the tape, the photocells being arranged to be substantially equidistant from the lamp. The photo-cells are mounted in bores in a housing 23, beneath which is mounted a transparent cylinder 34 over which the tape is fed by sprocket wheel 15 to bring the frames successively to the sensing position. As shown in Fig. 2, the rows of photo-cells are arcuately arranged about the lamp so that they are all equidistant from it. Across the tape the cells are also arcuately arranged as shown in Fig. 3, the bores 30 converging radially of the lamp centre to the tape hole position. The sprocket wheel 15 is driven through a clutch 57 operable by a solenoid 58 to cause the tape to advance by one frame. The tape is braked by being gripped between pin 73 and adjustable stop 80. The pin 73 and another pin 72 are mounted on a rotatable disc 71 and spring- loaded in an anticlockwise direction. As the tension in the tape increases for a feeding movement the disc 71 is rotated by the pressure on the pins and the braking effect is released. A similar pair of pins serve to keep the tension in the tape between feeding steps.
Patent GB-1134961-A (GB)
Title: Process for spinning threads of polyarylsulphones
Inventor: WEYLAND HERMANN GERRIT
IPC: D01F6/66
Filed: 1967-04-12
Abstract: 1,134,961. Wet spinning polyarylsulphone filaments. ALGEMENE KUNSTZIJDE UNIE N.V. 12 April, 1967 [13 April, 1966], No. 16858/67. Heading B5B. A solution consisting essentially of a polyarylsulphone in an organic solvent is wet spun into a coagulating bath consisting of 5 to 90% by volume of the solvent and 95 to 10% by volume of a liquid in which the polyarylsulphone is insoluble and with which the solvent is miscible. The organic solvent may be a halohydrocarbon such as chloroform, trichloroethylene, dichloroethylene, dichloromethane. monochlorobenzene or orthodichlorobenzene, The liquid in which the polymer is insoluble may be a monohydric aliphatic alcohol having not more than 5 carbon atoms in the molecule. The polyarylsulphone may have a relative viscosity of 1.6 to 4.2 measured at 30‹ C. on a 1% by weight solution in chloroform. The filaments formed in the coagulating bath may subsequently be contacted with a non-solvent for the polymer which is miscible with the spinning solution solvent. The contacting may be effected in a second bath maintained at 50‹ to 100‹ C. The filaments after leaving the coagulating bath and while still wet may be stretched, e.g. by 100 to 300%. They may be stretched after having been contacted with the non-solvent for the polymer. The recurring units of the polyarylsulphone may have the formula
Patent GB-914662-A (GB)
Title: Improvements in or relating to vehicle lighting sets
IPC: H02J7/22
Filed: 1961-05-10
Abstract: 914,662. Automatic control systems for load sharing. BOSCH G.m.b.H., ROBERT. May 10, 1961 [May 11, 1960], No. 16920/61. Class 38 (4). A vehicle lighting set comprises two dynamos 10, 11 connected in parallel having shunt excited fields 50, 150, respectively, each dynamo being provided with a voltage controlling device, for example 15, containing a vibratory relay having a voltage coil 41 which by virtue of a pair of contacts 45, 46 and a transistor 51 controls the output voltage of the dynamo 10, the relay also being provided with a current coil 42 and a further pair of contacts 55, 56 which are normally open and connected in series with the current coil 42, the current coils and normally open contacts of the two voltage controlling devices 15, 16 being connected in series across the output of the parallelly connected dynamos, the contacts 55, 56, when closed, forming a short-circuit between base and emitter of the transistor 51 to cause it to assume a high impedance and similarly with the contacts 155, 156 and transistor 151 so that the load, shown as a battery 20, on the dynamos 10, 11 is shared equally between them. The arrangement also includes silicon diode reverse current cut-outs 32, 132.