baber/WOPTO huggingface dataset:
Patent GB-681445-A (GB)
Title: An improved rear projection screen unit for picture projection
IPC: G03B21/10
Filed: 1949-12-21
Abstract: 681,445. Optical - projection apparatus. STABLEFORD, J. L. Dec. 21, 1950 [Dec. 21, 1949; April 19, 1950], Nos. 32740/49 and 9669/50. Class 97 (i). A rear projection unit comprises a rigid housing 2 with a screen 1 at the front and at least one reflector at the rear end 3 to throw on to the screen an image from a projector at the side of the housing, the screen being hooded at least at top and sides by hinged flaps 35, 37, 38, the flaps 37 and 38 having wings 40 which support the flap 35 when the hood is open, and when the hood is closed, are accommodated in the housing 2. In the form shown, the wings 37, 38 also have wings 41 to support a bottom flap 36. The frame 7, at the front of the housing, supports, through screws 9, a smaller frame carrying the screen, there being a narrow space between the frames through which the wings 40, 41 pass as the hood is closed. When closed, the hood is secured by catches 44. The projection light beam passes through a trunk 4 at the side of the housing. As shown, the trunk is hinged at 27 so as to be able to be pushed in flush with the housing wall or pulled out for projection to be effected through the aperture 5. A turnbuckle 30 secures it in either position. An inspection aperture 33, with cover 34, is provided. The mirror at 3 is inclined and may be detachable through a slot in the casing. The housing 2 tapers rearwardly and may have a foldable leg (not shown) at the rear so that it can stand on a level table. A foldable supporting frame, as shown, may be provided, having two tubular frames 50, 51, the rear vertical members 53 of which are hinged, the front members 52 being held, when open, by a diagonal strut 57 hinged to the top of the frame 50 and detachably secured at 58 to the frame 51. A frame 62, comprising parallel tubes, is hinged to the top bar 54 of the frame 51 and clips on to the top bar of the frame 50. The frame 62 carries projections, not shown, for locating the projector and a table 70 for supporting the projector. The table may have locating means for the projector. The vertical frame members may have feet 73, 74, 75 which may be adjustable telescopically. An upward extension on one of the tubes 53 holds the screen unit level. A strap 80, 81 secures the screen frames when folded. In a modification, Fig. 8, the supporting structure 84 has an upper horizontal rectangular frame with folding legs. The screen structure is secured obliquely and the projector on the table 85 projects through a hole in the side wall, there being no trunk. The beam is reflected successively by three mirrors 82, 83, 19<SP>1</SP>.
Patent GB-1043170-A (GB)
Title: Improvements in or relating to automatic preset counters
IPC: G01B11/04
Filed: 1963-08-19
Abstract: 1,043,170. Electrical calculating apparatus JONES & LAUGHLIN STEEL CORPORA TION. Aug. 19, 1963 [Aug. 21, 1962], No 32773/63. Heading G4A. The divisor is first counted into a presetting counter 10 after which the train of pulses to be divided is counted into counter 12 which is preset by 10, the quotient or reduced frequency appearing at 16. The preset counter 12 may comprise a binary-coded decimal arrangement of hard valve trigger pairs, the plate potentials of which feed a AND matrix 26 to mark one decimal lead. The marked lead is connected through an associated OR gate in a matrix 28 to mark one or more leads in a coincidence amplifier 32. When the preset counter 12 attains the coding in 32 an output pulse is passed to tally counter 34, and the counter 12 is reset. The counters may be multi-denominational and may, alternatively, be beam switching or glow transfer tubes (Fig. 6, not shown).
Patent GB-161245-A (GB)
Title: Improvements in electric generators and motors
IPC: H02K23/60
Filed: 1919-12-31
Abstract: 161,245. Rankin, R., and Van Raden & Co., Ltd. Dec. 31, 1919. Dynamos, regulating; motors, gearing for.- A dynamo-electric machine which can be used as a motor for engine starting and as a self-regulating generator driven by the engine comprises a rotating armature A and a field magnet B which is normally stationary, but can revolve freely in one direction unless held by a brake and rotate to a limited extent in the opposite direction against the action of a spring. The machine is started up as a motor by gradually cutting out resistance in the armature, circuit and allowing the field magnet to rotate freely until all the resistance has been cut out when a band brake B<14> is applied to slow down the field magnet and so speed up the armature. The brush-carrying member B<8> is mounted between the field magnet Band the. armature shaft A<3>, and is held against rotation in one direction by a one-toothed ratchet and pawl member B<12> while being free to rotate in the opposite direction. The field magnet B is connected to the brush-carrying member B<8> by means of a spring-pressed bolt B<10> entering a slot in the member B<8>, the slot being arc-shaped to allow of relative rotation between the field magnet and the brush-carrying member. When the machine is functioning as a generator, its current output is maintained approximately constant by the field magnet rotating in the direction of rotation of the armature against a spring B<9>, the brush-carrying member being held stationary by the pawl-and-ratchet device.
Patent GB-1155990-A (GB)
Title: Electric Warning Device.
Inventor: KLEIN H C
IPC: B60T8/88
Filed: 1967-07-18
Abstract: 1,155,990. Brake indicators; fluid pressure brake systems. ALFRED TEVES G.m.b.H. 18 July, 1967 [21 July, 1966; 27 July, 1966; 6 Aug., 1966 (2); 1 Sept., 1966; 7 Dec., 1966], No. 32895/67. Headings F2E and F2F. [Also in Division H1] A tandem braking system includes two pressure operated switches 2, 4, one in each pressure circuit, arranged to actuate and indicating if either pressure circuit fails. In one embodiment, Fig. 1, switch 2 is connected in series with a brake lamp 3 and switch 4 in series with a resistor 5. Non-closure of either switch due to low pressure results in relay 8 being energized to complete the circuit to indicator 9. Once energized, relay 8 locks in until released by plunger 10. The indicator 9 may also be operated by a low level switch 6 in the reservoir, or a test switch 7. In a modification, Fig. 2 (not shown) the relay is omitted, and the indicator 9 connected directly in place of the relay coil. The switches 6, 7 and a hand brake switch (12) are connected across pressure switch 2. In a further modification, Fig. 5 (not shown) a two-winding relay is used, with one winding in series with each of the switches 2, 4. In an alternative form, Fig. 3, the brake pedal is associated with a switch 13 which actuates the brake light 3 and a switch 14 which closes later to ensure that both switches 2, 4 have had time to operate if the pressure is normal. Switch 14 may be omitted if switch 13 is constructed so that it operates in dependence on the force operative on the brake pedal. A suitable switch, Fig. 4, is mounted on the push rod extending from the brake pedal 20 to the master cylinder 32. The push rod is made in two halves 21, 31 which move together to close contacts 28, 29 when the force on the brake pedal overcomes that of spring 26.
Patent GB-601366-A (GB)
Title: Improvements in or relating to spring latch fastener devices
Inventor: WRIGHT THOMAS
IPC: A01K27/00
Filed: 1945-12-05
Abstract: 601,366. Catches. WRIGHT, T., and CHARNOCK, S. T. Dec. 5, 1945, No. 32916. [Class 44] A spring catch comprises a housing 1, a latch tongue 3 to slide into the housing, a resilient runner 8 supporting the latch tongue and urging it into locking engagement with a shoulder 7 inside the housing, and an abutment movable into and out of a position in which it prevents release of the latch by downward pressure on the web 22 which projects through a slot 23 in the housing. The abutment comprises a rotatable disc 13 having locking segments separated by gaps and is mounted on a barrel 10 rotatable by means of a key 12 to bring a locking segment or a gap into register with the latch 3. The blade spring in the form shown may have a ball-bearing runner or may be replaced by a helical spring. The catch may be used with a sliding clasp fastener, the sliding clasp being attached to the latch tongue and secured at the end of the fastener.
Patent GB-887967-A (GB)
Title: Method of producing a stable solution of ozone
IPC: F17C11/00
Filed: 1960-09-26
Abstract: <PICT:0887967/III/1> A method of producing a stable solution of ozone comprises dissolving ozone in a liquid fluorinated hydrocarbon at a temperature below -95 DEG  C.  Ozonized oxygen coming from an ozonizer (not shown) enters absorber 1 maintained at a temperature below -95 DEG  C. by a liquid oxygen bath contained in a double-walled casing 3 into which liquid oxygen is fed through a conduit 4, vaporized oxygen leaving the absorber 1 through a conduit 5.  A current of fluorinated hydrocarbon passes in the gaseous state through a conduit 6, is liquefied in a coil 7 and then passes into the top of the absorber 1.  The ozonized oxygen and the liquid circulate in counter-current in the absorber 1.  The ozone liquefies and dissolves in the fluorinated hydrocarbon and the resulting ozone solution is discharged through a conduit 8. Residual oxygen leaves the absorber 1 through a conduit 9.
Patent GB-459682-A (GB)
Title: Improvements in and relating to the centrifuging of sugar or similar substances for the separation of syrup
IPC: B04B9/08
Filed: 1935-11-28
Abstract: 459,682. Centrifugal machines. HADDAN, R., 31, Bedford Street, Strand, London.- (Western States Machine Co. ; Salt Lake City, Utah, U.S.A.) Nov. 28, 1935, No. 33033. [Class 23] A centrifuge for the treatment of sugar has a suspended basket 45 driven from the horizontal shaft 1 through the intermediary of a clutch, the bevel gearing 30, 31 and a non-gyratory vertical shaft 32 connected to the basket shaft 40 by flexibly interlocking coupling members 32<a> 33<a>. The clutch is of the type described in Specification 392,819, [Group XXIV] ; its pulley 8 is secured to the hollow shaft 9, and the centrifugal shoes 16, which engage the inner face of the pulley, are pivotally mounted on arms 15 attached to the ears 10 of a spider fixed to the power shaft 1. The sliding muff 13 for actuating the toggle links 12 of the clutch is operated by the rocking of the control lever 17 on its pivot 17<a>; this is achieved by rotation of the control shaft 19 which carries a pinion 18<a> gearing with the sector plate 18 at the end of the lever 17. The hollow shaft 9 is connected by bevel gearing 30, 31 to the shaft 32 supported in bearings carried by the casing 5. The basket shaft 40 is supported by the ball 35 of its suspension head 34 resting in its socket in the hanger 36 which also supports the bearings 41 for the lower part of the shaft. A flexible but positive driving connection between the shafts 32, 40 consists of downwardly extending prongs 32<a> from a member on the shaft 32 which interlock with a similar set of prongs 33<a> projecting from a hub 33 secured to the upper end of the basket shaft. Both sets of prongs extend down to about the level of the centre of gyration, of the centrifuge to minimize oscillation.
Patent GB-891451-A (GB)
Title: Improvements relating to the burning of materials in rotary kilns
Inventor: DANO TAGE HALFDAN
IPC: F27B7/38
Filed: 1960-09-27
Abstract: 891,451. Cooling cement clinker. SMIDTH & CO. A.S., F. L. Sept. 27, 1960, No. 33163/60. Class 51 (2). In apparatus for reducing and cooling material, particularly cement clinker, before discharge from a rotary kiln, reducing and cooling agents are supplied as conical sprays on to the surface of the material in the kiln, the reducing process preceding the cooling process. The reducing agent is supplied via a hose 11, pipe 7, and nozzle 13, and the cooling agent via a hose 17, pipe 4, and nozzle 18. The pipe 4 is coaxial with the pipe 7 and its ends are provided with seals 5 and 6. Handles 3 and 8 enable the pipes to be turned and moved longitudinally in a sleeve 2 of the furnace end casing 1. The arrangement is adjusted so that the clinker surface areas struck by reducing and cooling agents are close together but do not touch. In a modification, Fig. 3 (not shown), the pipe 4 is provided with two nozzles giving overlapping cooling sprays. The reducing agent may be an oil and the cooling agent water; and the pipes 4 and 7 may be provided with refractory linings. Specification 406,530 is referred to.
Patent GB-466514-A (GB)
Title: Improvements in or relating to high-vacuum diffusion pumps
IPC: F04F9/00
Filed: 1935-11-29
Abstract: 466,514. High-vacuum ejector apparatus. McCOWEN, J. L., FAWCETT, E. W., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. Nov. 29, 1935, No. 33202. [Class 71] In a high-vacuum diffusion pump employing oil &c. evaporated to give a suction jet, the condensed oil &c. is passed through an external purifier to remove volatile constituents before return to the boiler. Fig. 1 shows the condensate drawn off through conduit 10 to the boiler 11 of a still in which volatile constituents are driven off through a conduit 12, while the purified working liquid is returned through conduit 13 to the boiler. Any working liquid diffusing to the high vacuum end and condensing is drawn off through a second conduit 15 and distilled in an evaporator 16, the bulk of it being evaporated ; the volatile parts flow off through conduit 12 and the working liquid trickles back into the boiler 11 ; the boiler 16 forms a diffusion pump drawing volatile constituents from the boiler 11. Fig. 3 shows a still having a central heated distributer 44 and an outer condenser 51 ; working liquid descends the distributer into main trough 49 and return conduit 50, while volatile matters condense on the outer surface and are drawn off by an outlet 48. In a modification, the outlet 48 is located at the trough-like base of the outlet 52, which surmounts the still, and the still is surrounded by a heating jacket. Pumps may assist the flow. Specification 465,478 is referred to.
Patent GB-505673-A (GB)
Title: Improvements in or relating to projection screens
IPC: G03B21/60
Filed: 1937-12-01
Abstract: 505,673. Projection screens. DENTON, J. M. Dec. 1, 1937, No. 33242. [Class H7(i)] A single layer of beads is secured by a coating of adhesive to a surface having recesses or depressions preformed thereon in regulax spaced relation, the recesses &c. being of such depth as to locate the beads and to allow them to project above the edges thereof. As shown in Fig. 1, grooves or pits of V or other section., which may be formed in a reflecting surface B by calendering, contain adhesive D applied by a doctor, brush, &c. in sufficient quantity to creep up the sides of the applied beads C, as shown; the beads may be bedded by slight pressure. The depressions, may be parallel, straight or wavy grooves, separate pits for each bead, grooves F set at 120‹ to one another in groups as shown in Fig. 5, or groups of concentric grooves G, Fig. 6, and pits H or seg-. mental grooves J. The beads may be spherical, ovoidal, or ellipsoidal.
Patent GB-906119-A (GB)
Title: Mixed ferrospinels
IPC: C04B35/26
Filed: 1958-10-17
Abstract: 906,119. Magnetic compositions. RADIO CORPORATION OF AMERICA. Oct. 17, 1958 [Oct. 31, 1957], No. 33274/58. Drawings to Specification. Class 38 (2). A ferromagnetic ferrite of spinel structure exhibiting a square hysteresis loop has a composition given by the formula where x = 0.00-0.95 and y=0.01-0.80. For materials having square loops at room temperature x=0.00-0.95 and y=0.01-0.40, whilst for low temperatures (-196 C.) x= 0.30-0.95 and y=0.01-0.80. The method of manufacture comprises the steps of wet milling a mixture of the metal oxides or oxide yielding compounds (or obtaining a bath by precipitation from solution), drying and calcining for more than 15 mins. between 800 C. and 1050 C., ball milling in water, adding a binder such as paraffin or a resin, e.g. trigamineoleate and a lubricant such as stearic acid, moulding into bodies under pressure (e.g. 20,000 p.s.i.) heating to burn off the binder and lubricant, sintering in air for -10 hours between 900 C. and 1300 C., and cooling at a rate less than 5 C. per minute. The bodies are then annealed in oxygen for 10-100 hours at 900-1050 C. to ensure maximum oxidation of the iron and manganese. A table of physical properties is given and a graph indicates that the Curie temperature decreases as x and y increase.
Patent GB-1197357-A (GB)
Title: Heterogeneous Ion Exchange Membranes
Inventor: SCHWACHULA GERHARD
IPC: C08J5/22
Filed: 1968-07-12
Abstract: 1,197,357. Heterogeneous ion exchange membranes. FARBENFABRIK WOLFEN VEB. 12 july, 1968, No. 33330/68. Heading B1X. Desalination of sea and brackish waters, separation of electrolytes from industrial wastes and deionisation of sugar juices such as molasses, whey, glycerol and film emulsions is carried out using heterogeneous cation or anion exchange membranes or bipolar ion exchange membranes prepared by intimately mixing pulverulent cation and/or anion exchange active material with an epoxy resin precondensate or epoxy resin precondensate-polyvinyl chloride mixture as binder in a weight ratio of from 1:1 to 4:1, a hardener and a solvent or solvent mixture, applying the mixture to a supporting fabric and curing thereon.
Patent GB-795852-A (GB)
Title: Vehicular trailers for carrying automobiles and the like
IPC: B60P3/08
Filed: 1956-11-01
Abstract: 795,852. Road vehicles. FRUEHAUF TRAILER CO. Nov. 1. 1956 [Feb. 6, 1956] No. 33389/56. Class 108(1) A carrier, particularly for automobiles comprises two side trusses 10 held in spaced relation by transverse members carrying tracks and each truss comprises longitudinals 12, 14 braced by continuous braces 22 forming diamond shaped apertures which allow the automobile doors to be opened, struts 16, 18 and 24 being added for rigidity.
Patent GB-311665-A (GB)
Title: Improved method of refining and bleaching fish oils
IPC: C11B3/02
Filed: 1927-12-10
Abstract: 311,665. Kernot, J., C. Dec. 10, 1927, Fats and fatty oils, purifying.-Fish oils are deacidified and bleached by acting thereon below 100‹ C. with aqueous caustic alkali solution, separating the aqueous layer, washing the oil, agitating it with concentrated aqueous sulphur dioxide or like sulphurous bleaching agent, separating the oil, repeating the bleaching treatment if necessary, and again washing. In an example, 0.5 ton of dog-fish oil is stirred into 112 lb. of a 5 per cent solution of caustic soda previously heated to 90‹ C. The emulsion is allowed to stand for 24 hours, when the lower aqueous layer is run off. The upper layer is washed with hot water, treated with an equal volume of a saturated solution of sulphur dioxide, washed with hot water, and dried and filtered with fullers' earth, animal charcoal, or other suitable decoloriser. Further bleaching may be effected by hydrogenating below 200‹ C. preferably in presence of a catalyst consisting of a mixture of the hydrated oxides of nickel and aluminium.
Patent GB-309420-A (GB)
Title: Improvements in or relating to means for shaping the heel end of a sole to form a heel-seat
IPC: A43D8/48
Filed: 1927-12-10
Abstract: 309,420. British United Shoe Machinery Co., Ltd., Ricks, F., and Richards, A. E. Dec. 10, 1927. Heel seats, shaping by cutting.-A heel seat fitting machine, comprising a support for the margin only of the sole of a shoe at its heel portion and power-operating cutting devices moving widthwise of the sole to form on the heel portion of the sole a bevelled tongue and heel locating shoulders, is provided with (a) a member to support the heel end of the shoe internally and a member to engage the outer face of the central part of the heel portion of the sole, both member being movable heightwise of the shoe in clamping it by a single treadle, and (b) poweroperated members operating in timed relationship to the cutting devices to clamp the sole margin to its support in front of the advancing cutting means. The invention is described as applied to the machine described in Specification 276,055. The plates 331 for supporting the rear end of the sole are cut away to support the margin only, and their edges are very thin. An internal work support 373 adjustable in height is urged upwardly by a spring 377 the lower end of which abuts on a pin 369 engaging a slot in the heel post, the whole being slidable towards and from the plates 331. The heel post is continued in the form of a plunger 367 co-operating with a lever 381 operated by a spring 383 from the treadle rod 69 described in the prior Specification as operating the outside clamping member 351. Adjacent to the thin edges of the plates 331 are clamps 421 with serrated edges, the clamps being carried by levers yieldingly actuated by rolls 411 each co-operating with a cam surface 417 on the knife-actuating lever 81 described in the prior Specification. The skiving knives 391 may have straight edges and may be only some three-sixty-fourths of an inch thick. To prevent such a thin knife " helping itself" into the work, it may be ground equally on both sides. In operation, a shoe with its sole secured by stitches extending rearward of the breast line and tacked along the median line of the tongue to be formed is positioned on the member 373 and this member slid rearwardly until the shoe engages a counter gauge, the edges of the plates 331 being engaged under the sole margin. The treadle is then depressed to cause the clamp 351 to descend and the member 373 to be urged upwardly by the spring 383. The latter spring expands when the work has been properly clamped. As the skiving knives move inwardly the members 421 cooperate with the edges of the plates 331 to clamp the sole in advance of the knives. If the machine is desired merely to " nick out " small portions of the sole adjacent to the heel breast line, as described in Specification 305,276, the plates 331 and knives 391 may be shortened, the full length of these parts being unnecessary.
Patent GB-434475-A (GB)
Title: Improvements in or relating to means for preventing the falsification of documents
IPC: B42D15/00
Filed: 1933-11-29
Abstract: 434,475. Cheques &c. ; cheque-books. SOC. ANON. DE PUBLICATIONS PERIODIQUES (IMPRIMERIE - DESFOSSES), 13, Quai Voltaire, Paris. Nov. 29, 1933, No. 33506. Void [Abridged as open to inspection under Sect. 91 of the Acts, May 31, 1934]. [Class 16] Cheques or the like which are to be fraud-proof are characterized by the fact that at least part of the inscription written on the front causes the appearance on the rear side of an inverse reproduction of such incription. The rear face of the cheque may be provided at certain parts with a layer of copying ink, coloured or otherwise, applied in the hot or cold state, so that when the inscription is written on the front side of the cheque the layer is crushed or scaled by the pen &c. The layer may be in the form of a design having zones of different intensities of colour. The layer may be of such a nature and colour that endorsements may be written thereon. In the arrangement shown the cheques a are connected together in book form by stubs b, a sheet c of copy paper being interposed beneath each cheque. A sheet d of cardboard or the like, to which a sheet of blotting-paper may be applied, is connected by a cloth hinge to one of the edges of the lower cover of the book. The copy sheet c receives a copy of the inscription written on the overlying cheque. Where several copies are required, a number of sheets each having on the back, except on the last sheet, an ink &c. similar to that on the back of the overlying cheque, may be incorporated in the book beneath each cheque.