baber/WOPTO huggingface dataset:
Patent GB-844702-A (GB)
Title: Improvements in stereoscopic microscopes
IPC: G02B21/22
Filed: 1957-05-03
Abstract: 844,702. Microscopes. POIVILLIERS, J. May 3, 1957 [May 5, 1956], No. 14199/57. Class 97(1) A microscope for stereoscopic viewing of transparent objects of the kind wherein a light beam from an objective is divided into two beams which are directed to eyepieces by reflectors so that superimposed virtual images of a point of an object can be viewed, is provided with means to vary the optical path length between the objective and the object and also to alter the optical paths traversed by said two beams in synchronism with said variation so that superimposed virtual images of points of the object at different depths can be viewed in said eyepieces. As shown in Fig. 1 the microscope has an objective 10 and eyepieces 11 and 12 to which a beam from the objective 10, after division at 16, is directed by reflectors 19, 20. On the microscope stage 13 is a transparent object 14 of thickness e and having upper and lower object points a, b, the stage 13 or objective 10 being moveable through distance e, so that the objective is successively focused on object points between a and b. The mirrors 19 and 20 are pivoted in synchronism with these movements so that virtual images of these points appear between A and B whereby, by persistence of vision, the object 14 appears in depth. This synchronous movement of the stage 13 and mirrors 19, 20 may be effected, as shown in Fig. 2, by the action of a solenoid 37 on a rod 36 linked to the pivoted stage at 24 and by levers 30, 33 and 31 to the pivoted mirrors. Alternatively, an electric motor may drive a cam to operate a cam follower linked to the stage and mirrors. In a further form, the stage 13 may be fixed, and the objective 10 moved synchronously with the mirrors by electromagnetic means or by a rotatable cam and cam follower. Instead of moving the objective as a whole, the latter may be fixed and include a movable pancratic element. Another form is described in which the mirrors 19, 20 are replaced by electromagnetically movable prisms. Further, the optical path lengths may be varied by relatively moveable optical wedges disposed between the object and the objective and between the dividing means 16 and each mirror or prism 19 and 20.
Patent GB-384187-A (GB)
Title: Process for producing a welding material particularly suitable for use as welding wire
IPC: B23K35/36
Filed: 1932-05-19
Abstract: 384,187. Uniting by fusion. ALBERTS, W., 21, Kanzlerstrasse, Ruhrort, Duisburg, Germany. May 19, 1932, No. 14204. Addition to 343,414. [Class 83 (iv).] In making welding wires by adding fluid slag to ingot iron during tapping or pouring as described in the parent Specification, a slag is used having a larger proportion of lime and magnesia than is usually present in Siemens- Martin slag so that the vapours of such highly basic slag, which is a good conductor of the second class, form a better conductor of current. A slag may be used containing 11 per cent of FeO, 17 per cent of MnO, 48 per cent of CaO, 10 per cent of MgO and 11 per cent of SiO2.
Patent GB-119032-A (GB)
Title: Improvements in Film Panoramic Cameras.
Inventor: STEFANI NICOLA
IPC: G03B37/02
Filed: 1918-09-02
Abstract: 119,032. Stefani, N. Sept. 14, 1917, [Convention date]. Drawings to Specification. Cameras, roll-film; panoramic apparatus.-In a film camera for taking two or more photographs from one view point which are afterwards united to form one panoramic picture, the surface of the film in the exposure position is curved to constitute part of a cylinder having its axis passing through the lens. The camera is also turned about this axis between the exposures.
Patent GB-1029937-A (GB)
Title: Enclosure body for rotary piston engines
IPC: F01C19/10
Filed: 1963-04-10
Abstract: 1,029,937. Rotary-piston engines. FICHTEL UND SACHS A.G. April 10, 1963 [April 12, 1962], No. 14333/63. Heading F1F. The inner track surface 5, Fig. 2 (not shown), of the enclosure body of a rotary-piston engine, particularly of trochoidal type, is provided with a coating 3 of hard material, e.g., hard chrome, which extends into recesses 2 formed in the parallel end faces 4 of the body, to prevent, when grinding the track surface and the end faces, the forcing away and crumbling of the coating at the junction of the track surface with the end faces.
Patent GB-111652-A (GB)
Title: Improvements in or relating to Educational Appliances.
Inventor: WATSON CHARLES PERCY
IPC: G09B17/00
Filed: 1917-10-04
Abstract: 111,652. Watson, C. P. Oct. 4, 1917. Word-building, number-building, and like apparatus.-An educational appliance is provided with rocking indicator plates 1 bearing figures or signs and adapted to be held by gravity in an upright or horizontal position against stops. The indicator plates are mounted in a frame 5 which can be tilted in either direction so as to set the indicator plates simultaneously in either the vertical or horizontal position. Each plate may be formed with ears 2 connected by a sleeve 3 mounted on a pivot pin 4 and with a flange S at its lower edge. The motion of the frame 5 may be limited by stops 12.
Patent GB-568645-A (GB)
Title: Improvements in and relating to burnishing or polishing tools having diamond or liketool pieces or tips for use in boring bars or other tool supports
IPC: B24B39/00
Filed: 1943-09-03
Abstract: 568,645. Burnishing. JEARUM, F. C. Sept. 3, 1943, No. 14438. [Class 60] [Also in Group XXII] A burnishing or polishing tool for use with a boring bar, or with a tool post for external turning, comprises a diamond, or other hard mineral or hard metal tip 8 ground to the form of a portion of a spheroid, ellipsoid, or oval, subtended by an angle of approximately 90 degrees and mounted in a holder or bit 3. The bit 3 is mounted rotatably in a hole 2 in a boring bar 1 with its axis at an angle, which may be about 15 degrees to the normal to the axis of the bar, and the bit is locked in adjusted position by a sleeve 5 and screw 7 ; boring tools 23, 24 are provided in the bar 1. The tip 8 thus makes point contact with the work, and a new point may be brought into operation by rotation of the bit; the bit may be pivotally mounted by means of a block, so that the axis of the bit may be set at a different angle, thus bringing the contact point onto another part of the tip. As applied to a tool for external work, the bit is mounted in a carrier 9 pivoted at 12 in a groove 11 in the tool block 10 and adjustable by screws 14, 15 ; the bit is held in adjusted rotational position by a set-screw 16 engaging recesses in the bit 3. A turning-tool 17 mounted in a bit 18 is provided, supported in a carrier 19 pivotally mounted in a recess 20 in the block 10, and adjustable by screws 21. Specification 458,194 is referred to.
Patent GB-366389-A (GB)
Title: Improvements in vehicle brakes
IPC: B61H13/32
Filed: 1931-05-15
Abstract: 366,389. Brake transmitting- mechanism. SVENSKA AKTIEBOLAGET BROMSREGULATOR, 5, Adelgatan, Malm÷, Sweden. May 15, 1931, No. 14462. Convention date, June 23, 1930. [Class 103 (i).] In a vehicle brake especially for railway vehicles having arrangements for permitting the variation of the leverage of the braking mechanism in accordance with the load, one or more additional levers are mounted in the rigging each having a fixed leverage and means are provided for connecting and disconnecting the levers as power transmission means. In a system in which the main piston is connected to a lever 4 pivoted at a fixed point 3 the brake power is transmitted either by a pull rod 8 and a lever 6 or a pull rod 12 and a lever 7 to the brake rod 5 according to whether the abutment 15 is in the position shown in full or dotted lines. The abutment is moved by handle-bar at the side of the car. The pull rod 12 has a slotted connection 13 with the lever 7 or the lever 4. The abutment 16 limits the movement of the lever 6 in one direction. This arrangement is shown applied to an equalized brake structure of the European type in which at the longitudinal axis of the car are mounted the brake pull rods extending to each end of the car, one of which is connected to .the lower end of the lever 4 and the other to the lower end of a dead lever mounted on a fixed pivot at its upper end and operated intermediately by the rod 5. It is also shown applied to an equalized structure of the American type in which the dead lever is inverted, and the pull rods are positioned symmetrically at opposite sides of the longitudinal axis of the car. In a further modification applied to an European brake structure a single additional lever only is used having an abutment which is put in or out of action. In a modification of this last construction the dead lever is dispensed with and two additional levers 24, 25 are connected direct to the pull rod 5a, one by means of aslot 26. Abutments 15a, 15b on a common shaft are adapted to coact alternatively with the ends of the levers 24, 25 and a spring 29 connected by a rod 30 and slots 31, 32 with the ends of the levers 24, 25 ensures a predetermined position of the levers to allow the abutments to be moved into position. A further modification is a reversal of the arrangement comprising a single lever, the single lever and the dead lever are interchanged and of the same length. By using more than two additional levers more than two ratios of leverage may be obtained. The slots provided in the rigging correspond with the movement of the brake blocks up to the wheels. Slots are provided on the rods directly interconnecting the additional levers so that the idle movement of the disconnected lever is a minimum. The invention is also applicable to brake structures having only one pull rod extending to the brake shoes.
Patent GB-796242-A (GB)
Title: Coating of strand-like metal bodies with molten metal
Inventor: OGANOWSKI KASIMIR
IPC: C23C2/22
Filed: 1956-05-09
Abstract: 796,242. Coating metals by tinning. ARMCO INTERNATIONAL CORPORATION. May 9, 1956, No. 14462/56. Class 82(2) Strand-like metal articles are coated with molten metal by a process in which, after cleaning, the strand is moved upwardly past a lip at one side of which the strand contacts the molten metal and carries a coating thereof between itself and the lip, the thickness being at least partly controlled by maintaining the hydrostatic pressure of the molten metal at said one side of the lip under negative pressure. The lip contacts the strand above the level of molten metal in the bath whereby the negative pressure is maintained by capillary action. After cleaning, the strand may pass through a cooling hood. Fig. 2 shows a strip 1 passing out of a cooling hood 2 into a bath 3 and past lips 6 and 7. In modifications, the strand enters the bath at the bottom. The lips are adjustable vertically, horizontally and angularly. The tips of the lips may be made of molybdenum. As shown in Fig. 5, the strip 1 passes from the cooling hood 2 through a slot or nozzle 40 in exit piece 41 the lower end of which is in molten sealing metal in a basin 42. An inner cover 43 restricts the escape of reducing gas from hood 2. A scraper 44 removes scale &c. from roll 37 Pipes 46 opening into the hood 2 feed vaporized sodium, carried by the reducing gas (e.g. hydrogen or dissociated ammonia) used in the hood. Containers 47, 48 hold molten coating metal and have electric heaters 49 and mouths 47a, 48a through which the molten metal is fed to the strand. The strand remains surrounded by reducing gas between its exit from the slot 40 until it is coated and, for this, further reducing gas, beyond that issuing from the nozzle, may be applied to the strand between the nozzle end and the bath entry. Adjustable pipes 50 direct finishing gas at the contact point of the strand and containers, this gas and that issuing from nozzle 40 preferably burning. Scoops 51 direct cool air on to the coated strand. Other cooling means such as compressed air, steam sprays, water sprays and water cooled rolls may also be used. The containers 47, 48 may be made of ceramics or of molybdenum and its alloys. The containers have lips at their coating portions Fig. 6 shows a form in which the lower lip 52 is an extension of the container and the lip proper 54 above the molten metal level has an extension 55 down into the metal. In Fig. 7 the lip 54 is wholly above the level of molten metal and co-operates with the oxide film 58. The lips 52, 54 may be made of cast iron or molybdenum. The strip may be coated on one or both sides. and reference is made to the coating of iron or steel strip with zinc, tin, terne, aluminium and aluminium alloys.
Patent GB-475523-A (GB)
Title: Improvements in or relating to the manufacture of esters of phosphoric acid
IPC: C07F9/09
Filed: 1936-05-22
Abstract: Halogenated alkyl phosphates are prepared by reaction of a phosphorus oxyhalide and an olefine oxide in presence of aluminium chloride. Chorethyl phosphates are obtained using phosphorus oxychloride and ethylene oxide, while 1.2-propylene oxide or epichlorhydrin will yield esters in which 1, 2 or all 3 chlorine atoms are replaced by a 2-chlor-propyl or 2.3-dichlorpropyl group respectively.  The amount of catalyst may be \ba1/2\be-5 per cent of the phosphorus oxyhalide, but smaller or larger amounts are permissible.  Atmospheric or increased pressure may be used.  The products are plasticizers and high boiling solvents for organic derivatives of cellulose.  In examples: (1) ethylene oxide is led into cooled POCl3 + 1 per cent AlCl3 at such a rate that the temperature is about 35 DEG  C.  When the reaction slows down heating to about 55 DEG  C. is employed.  The amount of ethylene oxide is slightly in excess of that required to give trichlorethyl phosphate.  The product is agitated with dilute sodium carbonate, the aqueous layer separated, and the remaining ester washed and dried; (2) epichlorhydrin is reacted similarly, first at about 60 DEG  C. and later at 70-80 DEG  C., a 10 per cent excess over that required to give tri(2.3-dichlorpropyl) phosphate being added.
Patent GB-106412-A (GB)
Title: Improvements in or Additions to Sporting Guns, Sporting and Military Rifles, and the like.
Inventor: WOODWARD CHARLES LITTLETON
IPC: F41C23/16
Filed: 1916-10-12
Abstract: 106,412. Woodward, C. L. Oct. 12, 1916. Stocks.-Consists in a hand-grip fixed to the stock behind the triggerguard to enable the gun to be held and fired with one hand. In the construction shown, the grip a has depressions c, c<1>, c<2> for the fingers, a projection d for the thumb, a swelling e for the palm of the hand, and a ledge f to support -the side of the hand. The grip may be shaped for the right hand or for the left.
Patent GB-761476-A (GB)
Title: Improvements in and relating to polyphase current supply sources
IPC: H01F38/02
Filed: 1954-05-18
Abstract: 761,476. Changing frequency and number of phases. GENERAL ELECTRIC CO. May 18, 1954 [May 18, 1953], No. 14584/54. Class 38 (2). [Also in Group XXXIX] A polyphase load such as the stator windings 7, 8, 9 of a threephase induction motor 6 is supplied with current of variable frequency from a single phase source 1, 2 through magnetic amplifier stages 3, 4, 5 of the same number as the phases, connected to form a phase rotating ring oscillator. Each amplifier stage comprises a pair of selfsaturating amplifiers connected in push-pull, each having a threelegged core 12, with load windings 13, 14, which are supplied through rectifiers 17, 18 from supply line 1, 2, wound on the outer limbs. Control windings 15 are connected in series pairs across the load resistors 19, 20 of the preceding stage in series with one of the motor windings 7, 8, 9. With the output signal of each stage shifted in phase with respect to the input signal, oscillation occurs at the frequency for which the loop gain is unity and the loop phase shift is 180 degrees. The gain of each stage is unity and the phase shift between them is 120 degrees. To vary the phase shift of each stage and therefore the output frequency, resistors 21 or other impedances connected across biasing windings 16 on the amplifiers are varied in value. In a modification the load current is amplified by three further magnetic amplifier stages each comprising a pair of amplifiers supplying respectively two motor windings in the same phase with oppositely-directed pulsating D.C., Fig. 2 (not shown).
Patent GB-731272-A (GB)
Title: Improvements in or relating to spectacle frames and the like
IPC: G02C1/08
Filed: 1952-06-10
Abstract: 731,272. Spectacle frames. FISH OPTICAL CO., Ltd., WARD, A. E. V., and McCABE, V. G. July 23, 1953 [June 10, 1952; May 20, 1953], Nos. 14618/52 and 14225/53. Class 97 (1). Spectacle frames having rims split near to where the side arms are attached are adapted to take varying size lenses or filters by a joint which comprises two bored members 114, 116 on the two ends of the rim respectively, which rim ends have a common longitudinal axis 100, one bored member 116 carrying the hinge-carrier for the side arms 127 and also a screening socket 121 within which the other bored member is received, the two bored members being connected by a bolt or screw 122 so that the ends of the rims are relatively adjustable towards or away from each other, the bolt or screw having its axis parallel to the common longitudinal axis 100 and its head bearing against that bored member 116 which carries the side arm hinge. The side arm hinge, which is entirely carried by the bored member 116 comprise earts 123, 124 between which the end 125 of the side arm is held by a screw 126.
Patent GB-253712-A (GB)
Title: Improvements relating to the prevention of overwinding and over-running of pit, colliery and like cages
IPC: B66B5/08
Filed: 1925-06-05
Abstract: 253,712. Murdoch, D. June 5, 1925. Mechanical telegraphs. - The speed-limiting device of a mine-cage winding-apparatus is adjusted to act at a lower speed when miners are being wound instead of minerals and a special bell is rung by a wire which is separate from the ordinary signal wire and is connected with means under the control of either the pit-bottomer or pit-head man, but not under the control of the winding engineman. The speed-controlling device is readjusted to act at the limiting speed for mineral winding by the ordinary signal wire. A weighted lever 4 having a downwardly depending lug 11 is pivoted at 3 to a standard 2 and is attached by a pin-and-slot connection to a wire 5 connected to a special bell m the engine-house. The weighted arm 8<a> of a bell-crank lever pivoted at 7 is attached similarly to the wire 9 connected to the usual indicator and bell. The other arm 8b of this lever carries an antifriction roller 10 which normally occupies the position shown in Fig .1. This arm is connected with the governor or other speed-limiting device by a rod 13. When men are tc be wound, the pit-head man or pitbottomer pulls up the wire 5 and thereby releases the roller 10 on the arm 8b which moves to the right, Fig. 4, under the influence of the weight 12 and through the rod 13 effects the adjustment of the governor &c. The speed controller is restored to its initial position by pulling the wire 9.
Patent GB-805485-A (GB)
Title: Improvements in or relating to gravity settlers
Inventor: DAVIES ERNEST
IPC: B03B5/62
Filed: 1956-05-11
Abstract: 805,485. Gravity-separation apparatus. IMPERIAL CHEMICAL INDUSTRIES, Ltd. April 26, 1957 [May 11, 1956], No. 14696/56. Class 46. A mixture of liquid and solid, e.g. particles of titanium in sodium chloride, is introduced through a valve 3 to a conical settler 1 having a vertical extension 2, the extension having a height between the limits of at least one half of, and little more than, the greatest diameter of the cone. The extension contains a grid packing, e.g. consisting of horizontal courses, each course comprising strips of polyvinyl chloride spaced 1 inch apart, and each strip having a depth of 1 inch and a thickness of # inch. The strips in adjacent courses are at right angles to each other. Solids are removed through a valve 4 and liquid by an overflow launder 5.
Patent GB-869126-A (GB)
Title: Improvements in or relating to can testing machines
Inventor: STUCHBERY ARTHUR LESLIE
IPC: G01M3/32
Filed: 1958-05-08
Abstract: 869,126. Testing cans for leaks electrically. METAL BOX CO. Ltd. April 9, 1959 [May 8, 1958], No. 14820/58. Class 40 (1). [Also in Group XIX] A machine for testing cans for leaks comprises a circular support to which a succession of cans can be clamped and sequentially supplied with compressed air, leaks being detected by movement of the diaphragm of a differential pressure gauge, producing a capacity variation which is detected in a frequency-sensitive circuit to operate a reject mechanism. As shown (Figs. 1, 2), the rim 3 of a wheel carries an apertured support 1 of e.g. rubber, against which is pressed a cam 12 by a plate 13 operated via shaft 18 by a cam follower 21 and cam surface 22. The inside of the can 12 communicates via a pipe 25 with one side 27 of a differential pressure gauge, separated by a steel diaphragm 29 from the other side 28, both sides being communicable with a gas line 33 through a valve 32 operated by a cam follower 41, 42 co-operating with cam surfaces 42, 43 on the machine frame. A gas line 33 and pressure gauge is supplied for each aperture 2 on the wheel, the lines being individually connected to gas inlet and outlet pipes via ports in a fixed member 55 as the wheel rotates. The diaphragm 29 forms a test capacitor with an electrode 45 in side 28 of the pressure gauge. A coarse leak detector 58 is located in pipe line 33, and comprises two chambers 61, 64 (Fig. 4), separated by an insulating diaphragm 65 carrying a bolt 66 attached via spring 69 to a lead wire. During test, a coarse leak in the can allows the bolt 66 to contact a boss 63 on the earthed casing 59. Leads from each bolt 66 and each electrode 45 are taken to contacts 74, 75 respectively of a synchronous switch 72, where co-operating brushes on a fixed bracket 78 sequentially connect the contacts to the measuring circuit (Fig. 7). The capacity between the diaphragm 29 and electrode 45 is connected across the grid circuit of a tuned-grid, tuned-anode oscillator valve V1, followed by a phase-change frequency detector valve V2, to produce a drop in anode voltage with change in frequency, as produced by a faulty can. This causes the normally conducting section of a doubletriode valve V4 to be blocked, and the other section conducts to energize a relay 92 operating can re-ject mechanism. A short-circuit at the coarse leak detector 58 produces a similar result. The cams are fed from a shoot 89 and automatically clamped to the rim 3 by operation of lever 20. As the wheel rotates, compressed gas is fed through line 33 to the cans and to both sides 26, 28 of the pressure gauges, further rotation sealing the system. If a can has a bad leak an indication is quickly obtained from the coarse leak detector 58. After a further rotation the appropriate contacts reach the brushes at switch 72, and the capacity between diaphragm 29 and electrode 45 indicates the loss in pressure inside the can 12.