baber/WOPTO huggingface dataset:
Patent GB-572506-A (GB)
Title: Improvements in or connected with binocular observation instruments
IPC: G02B23/00
Filed: 1939-10-26
Abstract: 572,506. Binocular telescopes. BARR & STROUD, Ltd., and FRENCH, J. W. Oct. 26, 1939, No. 28748. [Class 97 (i)] The object fields of the limbs of binocular telescope instruments are arranged to differ wholly, or to a substantial extent, to increase the total field of view ; the images seen by the observer may be contiguous, overlapping, superimposed, or separated, and may be of the same or different magnifications. The instrument may comprise two objectives, or one only, and two instruments having, respectively, horizontally and vertically separated object fields may be mounted in fixed relative positions. Fig. 4 shows diagrammatically, objectives 1, respectively arranged for observation of fields depicted by circles AB and CD, inverted images BA, DC being produced. Means for producing therefrom erect and differently oriented images in the focal planes of eye-pieces 5 are provided, the magnified images A<1>B<1>, C<1>D<1> being visible to the eyes 3 as contiguous images. Field diaphragms of various shapes may be used and different forms are described. Various modifications of the arrangement of Fig. 4 are described, the eye-pieces having divergent or parallel axes, the object fields being in different relative positions, and the instrument being of the prismatic or Galilean type. Fig. 45 shows an instrument having a single objective producing images AB, CD in conjunction with prisms having reflecting surfaces 10, 11, 12 and 13, 14, 15 ; a roof type reflecting surface may be provided on each prism. Modified Porro prism combinations for erecting and orienting the objective images are described. Adjustment of interocular separation of the eye-pieces may be provided for by making one limb movable on parallel guides relatively to the other, by providing a hinge pin 44 &c., as in Fig. 56, or by providing a vertical hinge 51, Fig. 65, about which the limbs may swing. Scales may be associated with the adjusting means, for example, a scale 56, Fig. 65, in conjunction with a steadying extension 54 sliding within an extension 55. Alternatively, a step prism 57, Fig. 72, rotatable with its associated eye-piece 58 about an 'axis x25, may be provided for interocular adjustment without change in the appearance of the fields.
Patent GB-891212-A (GB)
Title: Liquid flow controlling means
IPC: C08F4/68
Filed: 1960-08-19
Abstract: 891,212. Controlling liquid-flow. DU PONT DE NEMOURS & CO., E. I. Aug. 19, 1960 [Aug. 21, 1959], No. 28786/60. Classes 99(1) and 99(2). In a device for controlling the flow of viscous liquids in conduits and which comprises a body having a plurality of passages therethrough adapted to be located within a conduit, at least one of the passages converges from an area at one end of the body in the vicinity of the periphery to an area at the other end of the body in the vicinity of the axis, and at least one of the passages diverges from an area at the first end of the body in the vicinity of the axis to an area at the other end of the body in the vicinity of the periphery. In one embodiment, Fig. 2a, flow channels 12, 13 direct liquid from the pipe walls to the axis and vice versa respectively. The peripheral entrances 14, axial exits 15, axial entrances 16 and peripheral exits 17 are smoothly contoured. A flange 11 is provided for insertion between the flanges of a piping system. In another embodiment, Fig. 3a, a block of metal has a conical opening 22 cut therethrough, the small end 18 of the cone being the inlet for the central stream and the large end 19 being the discharge. Four conduits 24 are set into the base of a cup-shaped member 23 at one end and are set into holes drilled in the thick end of the outer body outside the small end of the cone at the other end. These conduits direct the entering peripheral stream towards the axis of the conduit. A number of other embodiments are described.
Patent GB-225578-A (GB)
Title: Improvements in or relating to automatic machine guns
IPC: F41A9/33
Filed: 1924-03-17
Abstract: 225,578. Browning, J. M. July 31, 1923, [Convention date]. Machine guns.-Relates to cartridge feed mechanism for automatic guns, and consists mainly in providing a member pivoted to the breech-block for extracting cartridges from the belt, the member being partly depressed by a cam during rearward movement of the block and further depressed by a movable switch-lever to align the cartridge with the chamber during forward movement of the block. The invention is shown in Figs. 1 and 7 applied to the machine gun described in Specification 219,932. The cartridges x are extracted from the belt y by an arm 12 hinged to the breech-block 11 and shaped to snap over the rim of the cartridge under the action of a spring 18 during forward movement of the block. At the same time a member 15 pivoted on the arm 12 wedges between two adjacent cartridges in the belt. During recoil of the breech-block, the arm 12 is depressed by a cam 19 to lower the cartridge into the extraction groove of the breech-block. During the return of the block, the arm 12 passes under a pivoted spring-controlled switch member 20 to depress the arm further to align the cartridge with the chamber in the gun, and also to cause the member 15 to eject the spent case. A fixed inclined member 24 on the casing serves to return the arm 12 to its raised position.
Patent GB-852174-A (GB)
Title: Improvements in or relating to electromagnetic actuated devices
Filed: 1958-09-09
Abstract: The pole faces of magnetic core members are improved by subjecting the pole faces of laminated members formed of an alloy comprising 0.5-7% Si, 0.1-2% Al, and the balance iron and unavoidable impurities to a nitriding process.  The members may be coated on all except the pole faces with a thin layer of tin dust lacquer and heated at 980 DEG F. in an atmosphere of ammonia for 10 hours and then at 1067 DEG F. for a further 5 hours, being finally cooled to 300 DEG F. in the same atmosphere.  The tin dust lacquer is removed and the members may be assembled to form a magnetic contact device.
Patent GB-163367-A (GB)
Title: Improvements in water-tight electric light fittings
IPC: F21V31/00
Filed: 1919-11-21
Abstract: 163,367. Kornfeld, I., and Etchepare, P. Nov. 21, 919. Electric-lamp lanterns and casings.-A fitting, Fig. 1, comprises a lamp-holder C secured to a base A formed with a socket B to receive a plugconnection X to a portable lamp, heater or other apparatus. The supply wires enter by a gland H provided with a rubber washer h. The plug X is secured by a bayonet-joint against a rubber washer j so as to be water-tight, and its leads are clamped by a cleat Z. The socket B may be closed by a cover F provided with a rubber washer g. The screw lamp socket C and a central contact bare bolted to an insulating block c, as shown in Fig. 2. The lamp-holder is locked by a set-screw a requiring a special key. A globe E and guard D are secured to the base A in a watertight manner and are locked by a set-screw f.
Patent GB-1119223-A (GB)
Title: Process for the production of precision casting moulds
IPC: B22C1/20
Filed: 1965-07-08
Abstract: 1,119,223. Refractory precision casting mould. DYNAMIT NOBEL A.G. 8 July, 1965 [9 July, 1964], No. 29082/65. Heading B5A. A precision casting mould is produced by forming a shell of the required shape from refractory material by applying, e.g. by dipping or spraying, to an expendable pattern e.g. of wax, urea, polystyrene, a suspension of the refractory material in a liquid binder so as to form a coating thereon, and removing the pattern from the refractory coating e.g. by melting, dissolving or burning it, and firing the shell obtained at a high temperature e.g. #1000 C., the liquid binder comprising a condensed mixed metal alcoholate containing at least two of the elements boron, aluminium silicon, tin, lead, titanium, zirconium. The binder may be liquid or dissolved in an organic solvent, and may be partially hydrolysed. It is preferably derived from an alcohol or a mixture of alcohols having 1-4 carbon atoms, and preferably also contains a titanium alcoholate and/or a silicon alcoholate and/or an amine. One or more coatings may be applied to the expendable pattern as above and further coating(s) by the conventional process using the refractory material suspended in a known binder, e.g. hydrolysed ethyl silicate, colloidal silica or water glass.
Patent GB-266057-A (GB)
Title: Improved cam mechanism for applying and maintaining pressure periodically
IPC: F16K1/20
Filed: 1925-11-18
Abstract: 266,057. Turner, C. Nov. 18, 1925. Discharging. - In cam mechanism for periodically opening and closing a retort valve in a shale distillation system &c. an augmented pressure is obtained during part of the operation, terminating before the end of the cam movement so that the actuated parts may be free to return to inoperative position without shock. In the arrangement shown, a valve 6 carried by an arm 6<a> on the shaft 7 is raised through a right angle by the action of a rotary cam 21 carrying rollers 20 bearing upon the edges of a pair of plates or arms 8 loosely mounted on the shaft and acting upon a rigidly mounted arm 9 through a yielding connection 12. During the subsequent motion of the cam, the periphery A thereof rides upon a pair of rollers 16, 17 carried by a triangular plate or plates 14 pivoted at 15 to the plates 8 and adapted to rock between stop-pins 18, 19. As the cam rocks the plate 14 into a median position as shown in Fig. 4, an augmented pressure is transmitted through the resilient connection 12. serving to seat the valve or equivalent actuated part firmly in position. When the rear edge of the cam rides off the rear roller 16, the plate 14 tilts into contact with the stop 19 and the pressure is relaxed leaving the valve free to fall by gravity as soon as the cam is clear of the plates 8. The resilient connection 12 comprises a coil spring on an eye-bolt 10 pivoted to the arm 9 and passing through a sleeve 11 swung between the plates 8, an adjustable stop being provided by the nut on the eyebolt in conjunction with a sleeve nut 13 threaded into the sleeve 11. The shaft 7 may be actuated by hand &c. independentlv of the cam 21. The valve need not be directly carried by the shaft.
Patent GB-768277-A (GB)
Title: Improvements in and relating to automatic electric motor control
Inventor: POOL WILLIAM JOHN
IPC: H02P3/06
Filed: 1954-10-11
Abstract: 768,277. Electrical measuring systems. BRITISH THOMSON-HOUSTON CO., Ltd. Oct. 11, 1955 [Oct. 11, 1954], No. 29261/54. Class 40 (1). [Also in Group XXXVII] In a motor control system (see Group Group XXXVII), the slider 5 of a potential divider is automatically maintained in the position in which its voltage balances that of a tachometer generator 2 coupled to the driving motor. In a predetermined position of the apparatus driven by the rotor, switch 3 cuts-out the - tachometer generator and the slider is driven at uniform speed to its lowest position in which it completes a circuit for stopping the motor. The time interval between arrival at the predetermined position and operation of the stopping circuit thus depends on the speed of the driving motor. The potential divider may have a non-linear law appropriate to the inertia of the driven apparatus. The stopping circuit is completed without operation of switch 3 if the speed becomes excessive.
Patent GB-1042698-A (GB)
Title: Improvements relating to containers
IPC: A47F5/08
Filed: 1965-07-09
Abstract: 1,042,698. Supporting containers. W. MARCUS. July 9, 1965 [July 9, 1964], No. 29261/65. Heading B8P. A container, preferably moulded from a plastics, has a number of hooks integral with the back wall for engagement with holes in a supporting structure, e.g. a peg board, and a number of studs for engagement in other holes in the support. The bottom of the container may be formed with legs.
Patent GB-1449750-A (GB)
Title: Polyether urethane elastomer composition
IPC: C08G18/12
Filed: 1974-07-02
Abstract: 1449750 Polyetherurethane elastomers BRIDGESTONE TIRE CO Ltd 2 July 1974 [3 July 1973] 29359/74 Addition to 1410809 Heading C3R Polyetherurethane elastomers are prepared from a polyisocyanate, a curing agent and a mixture of polyethers having active hydrogen terminal groups, the weight average of the polyether mixture being within the range of 1000 to less than 4500 and the molecular weight distribution curve of the polyether mixture having at least two peaks, at least one of which is located in the molecular weight region higher than the critical molecular weight of the polyether mixture and at least another one of which is located in the molecular weight region lower than the critical molecular weight of the polyether mixture, the equivalent ratio (d) of the active hydrogen groups of the curing agent to the isocyanate groups in excess of those required for complete reaction with the polyol mixture being in the range of 0À9<d<1.2. The critical molecular weight is a specific characteristic of the nature of the polyether and is in essence the minimum molecular weight at which rheological entanglement occurs. Most preferably the polyether mixture comprises a mixture of polytetramethylene glycols. Suitable curing agents are diamines and polyols. The polyetherurethanes may be prepared by the onestep or prepolymer process and are said to have improved cut-growth and flex-crack resistance whilst retaining a high tensile strength.
Patent GB-250862-A (GB)
Title: Improvements in or relating to clocks for advertising purposes
IPC: G09F23/16
Filed: 1925-11-20
Abstract: 250,862. Schmidt, M. J. Nov. 20, 1025. Clocks combined with advertising apparatus; dials; hands.-In clocks provided with cranked hands moving around a screen on which transparencies carried by an intermittently rotated disc are in turn optically projected, the opticalprojection mechanism is located to the rear of the clock-driving mechanism. The hands 5, 6 are attached to ball-bearing rings 7, 8 driven from the clock mechanism 9 by gearing 10, 11. The transparency carrier 13 is toothed for engagement by a gear wheel 19 loose on a shaft 18 uniformly rotated by the mechanism 9. The shaft 18 carries two eccentrics 23, 24 which rock arms 28, 29 in and out of the paths of pins 30, 31 on a disc 21 fixed to the wheel 19. A spring 22 connecting the disc 21 to the shaft 18 is tensioned by the rotation of the shaft, and at each release of the pin 30 or 31 turns through 180‹ and moves the carrier 13 a step. A spring detent 32 engages the pins 30, 31 to prevent reversal. The lamp 16 may be controlled by a switch co-operating with the carrier mechanism.
Patent GB-1044357-A (GB)
Title: Improvements in or relating to mounting rotatable shafts
Inventor: PETRIE JAMES ALEXANDER
IPC: F02C7/06
Filed: 1964-07-20
Abstract: 1,044,357. Bearings. ROLLS-ROYCE Ltd. July 13, 1965 [July 20, 1964], No. 29418/64. Heading F2A. [Also in Division F1] A rotatable shaft 20 is aligned in bearings 21, 22 when in a loaded deflected condition and is subjected to higher frictional forces from the bearings 21, 22 when in the unloaded undeflected condition. An oil film is provided between the shaft and each of the bearings. In an embodiment, a gas-turbine jet-propulsion engine 10 is mounted by means of struts 11, 12 on the end of a helicopter rotor 13 and comprises an axial flow compressor 14, combustion equipment 15, turbine 16 and exhaust duct 17 all arranged in axial flow series within a casing 18. The compressor 14 and the turbine 16 are mounted on the shaft 20 which is supported by the bearings 21, 22.
Patent GB-666328-A (GB)
Title: Improvements in or relating to the manufacture of acid bessemer ferrous metal
IPC: C21C5/28
Filed: 1948-11-12
Abstract: In an acid bessemer process, ferrous metal is blown for such time that the conversion is incomplete and the acid slag cleanly removed from the metal which is then dephosphorized and the conversion finally completed.  The first part of the conversion may be carried on until the acid slag attains a viscous condition from which the metal may be removed cleanly and completely without the use of mechanical aids, this viscous state occurring when the silica content is three times the iron oxide content of the slag. The dephosphorizing process may be performed in a ladle, the basic slag being removed before returning the metal to the same converter, which may contain the original acid slag, or to another converter, for the completion of the conversion.  Specification 521,254 is referred to.
Patent GB-716768-A (GB)
Title: Improvements in and relating to friction drive means for magnetic sound recording and like instruments
Inventor: BOLLIGER RUDOLPH
IPC: G11B15/43
Filed: 1952-11-21
Abstract: 716,768. A.C. motors. SCINTILLA, Ltd. Nov. 21, 1952, No. 29488/52. Class 35 [Also in Group XXXVIII] In a magnetic recording apparatus, a hysteresis motor is employed having an ungrooved rotor in the form of a closed cylindrical member 2 of magnetic alloy of high residual magnetism and coercivity joined to a rotor shaft 3 by discs 4. The stator comprises a set of stator lamina 5 having grooves extending for its entire length in which the stator winding 6 is laid.
Patent GB-781539-A (GB)
Title: Improvements in or relating to cigarette paper or the like and to tobacco smoking products comprising the same
IPC: A24D1/00
Filed: 1955-10-17
Abstract: 781,539. Cigarette paper. DURANDEAUX, J. Oct. 17, 1955 [Oct. 27, 1954; Oct. 10, 1955], No. 29561/55. Class 96. Cigarette paper, during or after manufacture or on a cigarette &c. is coated or impregnated with a salt of platinum, osmium, iridium, palladium, rhodium, or ruthenium, e.g. using a 0.1 per cent solution of palladium chloride in water, to act as a catalyst during combustion and eliminate obnoxious constituents of the cigarette smoke.
Patent GB-1091005-A (GB)
Title: Improvements in or relating to inflatable garments
Inventor: OWENS JOHN EDWARD
IPC: B64D10/00
Filed: 1965-07-13
Abstract: 1,091,005. Pressure suits. FRANKENSTEIN GROUP Ltd. Aug. 23, 1966 [July 13, 1965], No. 29567/65. Heading A3V. In a combined partial-pressure and anti-G suit, for wear under e.g. a flying overall or immersion suit, which includes two independently controlled systems of inflatable bladders, the partial pressure system is applied to all areas of the suit except the inner sides of the sleeves, the seat portion and the -knee regions and the anti-G system is superimposed thereon over the lower half of the body. The suit is made of nylon or polyethylene terephthalate with elastic underarm gussets A and adjusting laces B and is closed by sliding fasteners I, C and O. The partial pressure bladder D extends down to leg bladders K and communicates with a back bladder E which ends at the waist and with arm bladders N. The bladders K are shaped to leave the knee L free apart from a connecting strip at the outer side. The sleeve bladders N extend over the outside of the arms and are waisted at the elbow. The bladders comprise fabric layers F and G (Figs. 4 and 5, not shown) and are fed with oxygen at H. Anti-G bladder P partly overlies the bladder D and communicates with leg bladders S which extend down the outside of the leg and are waisted at the knee. The anti-G bladders are inflated with air supplied through a pipe R. A slide-fastened fly opening T has a further bladder U located directly behind it which communicates with the bladder D.
Patent GB-182390-A (GB)
Title: Improvements in machines for sewing sweat bands into hats
IPC: D05B23/00
Filed: 1921-11-07
Abstract: 182,390. Lehmann, H. Nov. 7, 1921. Hat-sewing machines.-In a machine for sewing sweat bands into hats of the kind in which the hat is supported on a rotatable ring, the ring is arranged to be positively rotated synchronously with the feed. The ring g is supported by a ring a secured to an arm a' against which bears a spring b<1>. The arm a<1> is pivoted to a hinged arm c adjustable by a screw e. A toothed ring g<1> secured to the ring g and projecting below the ring a is engaged by a pinion j<1> on the shaft k of the feed-wheel j.
Patent GB-248825-A (GB)
Title: Improvements in or relating to electric cooking stoves
IPC: F24C15/18
Filed: 1924-12-09
Abstract: 248,825. Pell, W. Guy-. Dec. 9, 1924. Resistance ovens.-A cooking-stove comprises vertical heating-elements 4, 5 which are adjustable towards and from one another by means of a system of levers and links. The stove shown comprises superposed compartments 1, 2, 3 in the lowermost of which the heating-elements are slidably mounted on transverse rods 6. Each element is connected by a link 9 to a centrallypivoted lever 10 with an operating handle 12, whereby simultaneous movements in opposite directions are given to the two elements. The elements comprise sheet-metal partitions which fit the compartment, so that the heat is confined to the space between them. The top of the compartment 3 may form a hot plate and be provided with a removable cover (not shown). The sides of the compartments may be removable for cleaning, &c. The food may be hung from a swivel eye 16, rotated through gearing 17 by an external clockwork motor 17a, and a vessel (not shown) containing fat for basting may be suspended above it. The top compartments 2, 3 may be dispensed with, as may also the sides and door of the bottom compartment. Fig. 8 shows a modified construction in which the heating-elements are supported on bent tubes 21
Patent GB-1462540-A (GB)
Title: Doffing apparatus
IPC: D01H9/14
Filed: 1974-07-04
Abstract: 1462540 Doffing arrangement MASCHINENFABRIK HEINZ WELLER 4 July 1974 [4 July 1973] 29618/74 Headings DID and D1J A doffing apparatus for spinning or winding frames comprises a plurality of annular discs 4 arranged on respective spindle shafts below associated packages 3, and a thrusting mechanism for thrusting the annular discs against the bobbins of the packages thereby freeing the packages from the spindle shafts, wherein the thrusting mechanism comprises a motor 12 coupled via a lever arrangement 8, 9, 10 to a plurality of plungers 5 adapted to bear against the annular discs. The plungers may be constrained to move in the direction of thrust of the annular discs and may be rigidly interconnected by a cross beam 9 to provide simultaneous movement. Alternatively the plungers may be of different lengths to provide for sequential thrusting against the annular rings 4. The motor may be connected with the plungers via a flexible member 11. A limit switch 17 may be provided to limit movement of the lever arrangement.
Patent GB-206011-A (GB)
Title: Improvements in hedge clipping machines
IPC: A01G3/047
Filed: 1922-10-30
Abstract: 206,011. May, H. Oct. 30, 1922. Hedge - cutting machines comprise a vertical shaft d, mounted on and rotated from a mowing machine a or other wheeled carriage, driving a horizontal shaft h transmitting motion to a depending vertical shaft s, which, through bevel gearing s<1>, x<1>, drives the crank z<2> of a cutter bar z. The shaft h is held horizontal by compression springs j engaging projections on the shaft casings h<1>, d<1>, and a balance weight n. The casings of the shafts d, h, s are jointed on pivots i, t, w, the teeth of the bevel gears q, r, u, v, s<1>, x<1> being rounded to permit of adjustment of the shafts. In a modification, a balance weight is substituted for the springs j.