baber/WOPTO huggingface dataset:
Patent GB-562095-A (GB)
Title: Improvements in and relating to the driving of dynamos
IPC: F16H61/02
Filed: 1942-09-14
Abstract: 562,095. Driving dynamos. SELFCHANGING GEAR CO., Ltd., WILSON, A. G., and MILLER, A. A. Sept. 14, 1942, No. 12934. [Class 35] [Also in Groups XXIV and XXXVII] A dynamo is driven by a prime mover of varying speed, such as an internal-combustion engine, through a variable speed-gear, and means are provided for changing the gear so as to maintain the dynamo at a sufficient charging speed. For this purpose, hand or automatically controlled devices increase the speed ratio when the speed of the prime falls below the required value. In the arrangements described, the variable speed gear is of the epi-cyclic type, input shaft 10 carrying planet wheels 12 which mesh with a sun-wheel 16 on the output shaft 17 and with an internally toothed wheel 14, which can be held stationary by braking surfaces 15, 15a or left free ; a free wheel arrangement 31, 32, 33 between the planet wheel system and the wheel 14 or the sun-wheel, ensures that the system will turn as a unit during the direct drive periods, while allowing a step-up speed ratio. The brakesurface 15 is carried by a disc 18 with a hub 19 connected to a fixed ring 19a by balls 20 and helical grooves 20a; rotary movement of this disc causes the surfaces 15, 15a to approach each other and clamp on the periphery of the wheel 14. This movement is obtained by a shaft 25 connected by an arm and spring to the disc and turned by a handle 22, either manually or by a solenoid actuating mechanism. Alternatively the wheel 14 may be held stationary by an electro-magnetically operated friction brake, Fig. 5 (not shown). Automatic means for controlling the speed-changing gear may comprise a centrifugally operating device carried by the prime mover shaft and adapted to control the circuit of the electrically actuated brake mechanism of the wheel 14. As shown in Fig. 12, this consists of two weights 56 diametrically disposed on the shaft 10 and connected by springs 56a. The weights are pivoted on shafts 57 working in slots 59, and as the speed of the shaft 10 increases they swing about their pivots so as to bring their ends 63 into contact with two slip rings in circuit with the braking supply. Further increase in the speed of the shaft 10, causes the weights to swing about stops 66 engaging the edges of slots 65a, so that the pivot pins 57 are forced between pairs of spring-pressed balls 64, whereby the contact with the slip rings is interrupted. The circuit is also broken when the shaft 10 is at rest. A modified form of free-wheel mechanism is shown in Figs. 6, 9, in which the inner member 42 is formed with flats 48 which engage rollers 35 mounted in a cage 47. Pins 49 on the cage engage enlarged openings 50 on the member 42 to limit the movement of the balls in one direction.
Patent GB-1431021-A (GB)
Title: Method of producing single crystals
IPC: C30B7/10
Filed: 1974-03-22
Abstract: 1431021 Producing single crystals BBC BROWN BOVERI & CO LTD 22 March 1974 [26 March 1973] 12968/74 Heading B1G A method of producing single crystals from the gaseous or liquid phase comprises initiating crystallisation with a crystal 'nucleus in the form of a single or multiple twin crystal, having one or more major growth surfaces exposed and along which the twin crystal after growth can be cut into single crystals, and when crystal growth is completed dissicating the twin crystal obtained into single crystals along the major growth surfaces. Crystal nuclei having a plane of symmetry are particularly suitable for carrying out the method of the invention, e.g. "Japaner" twin crystals of quartz having a (112-2) surface as a plane of symmetry as shown in Fig. 2 are preferred for the hydrothermal synthesis of quartz by this method to yield crystals with few faults by cutting along lines of symmetryl 30-33. In a preferred method a seed crystal of quartz is suspended on a Pt-Rh wire in a cylinder lined with silver and which is divided by a sheet silver diaphragm incorporating an opening into a lower chamber containing crystalline quartz and an upper chamber containing the seed crystal. The cylinder is then filled to 80% with a solution of 0.5N aqueous Na 2 CO 3  and the seed crystal is heated for a period of 20 days in an autoclave in such a way that the bottom of the cylinder is maintained at 397‹C and the top at 379‹C.
Patent GB-542395-A (GB)
Title: Improvements in the tuning arrangements of radio receivers
IPC: H01F21/00
Filed: 1940-08-14
Abstract: 542,395. Inductances. MULLARD RADIO VALVE CO., Ltd., and EAGLESFIELD, C. C. Aug. 14, 1940, No. 13001. [Class 38 (ii)]  A variable inductance for tuning short-wave radio receivers comprises a spiral or helical coil 7 one end of which is attached to a support 3 while the other end is secured to a spring blade 2 which extends the coil to an extent determined by adjustment of a screw 8. Insulation 5 is inserted between the end of the screw and a cup 4 on the spring blade. The coil may be used without a condenser to form an oscillatory circuit, the necessary capacity being provided by the coil itself together with the associated valve capacities and stray capacities.
Patent GB-143238-A (GB)
Title: Improvements in calipers and the like
IPC: B43L9/20
Filed: 1920-05-12
Abstract: 143,238. Aktiebolaget Patria, (Assignees of Bergstr÷m, A. E. T.). May 14, 1919, [Convention date]. Compasses and dividers. - Callipers or like instruments in which the legs 6 are assembled about a pivot 5 by collars 8 one or each of which has a projecting annular rib 11 which engages complementary grooves or recesses 7 in the legs, are adjusted by the coaction of a springs 2 and a conical member 4 acting upon the legs, the cone being operated by a nut 3 working over a screw connected to the pivot pin and passing through the cone and the spring 2.
Patent GB-569894-A (GB)
Title: Improvements relating to artificial teeth and dentures
IPC: A61C13/10
Filed: 1943-08-13
Abstract: 569,894. Anchoring pin teeth. BROWNING, W. W. Aug. 13, 1943, No. 13125. [Class 81 (ii)] Pin teeth are anchored to den tures, wax try ins, &c., with the aid of a wire clip comprising spring jaw parts c, c engaging behin( the heads of the pins b, b<1>, and a sinuous portion d or terminal loop or both. The end c<2> of the jaw c may be shaped as shown to prevent lateral displacement. The anchor may also be used on single pin teeth and on lower teeth carrying vertical pins.
Patent GB-558505-A (GB)
Title: Improvements in or relating to sound picture films
IPC: G11B7/00
Filed: 1942-09-17
Abstract: 558,505. Sound-picture films. WESTERN ELECTRIC CO., Inc. Sept. 17, 1942, No. 13126. Convention date, Oct. 22, 1941. [Class 40 (ii)] [Also in Groups XX and XXXIX] A sound-picture film is provided with a volume control track comprising a continuous record of constant amplitude electric oscillations or waves to which frequency variations are imparted. As shown in Fig. 1, this control track 5 is situated between the usual sound track 4 and pictures 3. Apparatus are described for making and reproducing this film. The recording apparatus Fig. 3 (not shown), includes monitoring devices; the reproducing apparatus, Fig. 2 (not shown) includes a single scanning slot and mirrors directing the light beams from the two tracks 4, 5 to two separate photo-electric cells. Specifications 323,014, [Class 40 (ii)], and 490,985 are referred to.
Patent GB-139698-A (GB)
Title: Improvements in or relating to driving mechanism for sewing machines and the like
IPC: D05B69/16
Filed: 1919-05-26
Abstract: 139,698. Spencer, G., Spencer, A. E. and Walker, F. E. May 26, 1919. Addition to 15232/15. Sewing-machines; starting and stopping gear.- The clutch and brake combination described in the parent Specification is varied by mounting the boss 20 of the pulley 19 within the sliding sleeve 8 by which the pulley is moved into contact with the clutch surface 28 or the brake surface 7. The sleeve 8 is moved axially towards the clutch surface 7 by means of the usual lever 10, and the return movement towards the brake is effected by a spring 16 acting upon the lever. The supporting-member 3 is carried by a bracket which is secured adjustably by means of bolts and slots and has two bearing-screws by means of which the bracket can be tilted laterally.
Patent GB-1071493-A (GB)
Title: Improvements in or relating to cutter pick securing
Inventor: FURBY JIM
IPC: E21C35/19
Filed: 1963-04-03
Abstract: 1,071,493. Mineral-mining picks. P. & V. (MINING & ENGINEERING) Ltd. April 3, 1964 [April 3, 1963], No. 13189/63. Heading E1F. The retaining member by which a pick is held in a pick box can be axially moved in a bore through the box on either side of a pick shank-receiving slot formed therein against resilient means housed in the bore so that a reduced cross section portion of the member can be brought into alignment with the slot so that a pick can be inserted or removed from the slot. Two preferred embodiments are described.
Patent GB-1111812-A (GB)
Title: Apparatus for use in erecting netting
IPC: A01G17/08
Filed: 1966-03-25
Abstract: 1,111,812. Erecting fencing. R. T. EVANS. 22 March, 1967 [25 March, 1966], No. 13372/ 66. Heading E1B. An attachment for a tractor to facilitate fencing erection comprises a -vertical bar 11 carrying wire reels 14 and 15 and horizontal tubes 19 and 20 which carry cord netting 23 between them, and through which wires 21 and 22 from the reels are passed to support the netting. Brakes 18 are provided for the reels, and arms 24 to limit the rate at which the netting is dispensed. The netting may be tensioned vertically by arms 27 of a pivoting bracket 25. The wires and the netting are stapled to posts 28. The reels may be fitted on to the tractor hubs so that they can be employed in winding up the wires, after detaching them from the posts, at the end of the season, by jacking up the rear wheels of the tractor and using the reels as winches.
Patent GB-874305-A (GB)
Title: Knitting-machine splicing mechanism
IPC: D04B35/00
Filed: 1957-04-26
Abstract: 874,305. Knitting-machines. SINGER-FIDELITY Inc. April 17, 1958 [April 26, 1957], No. 13393/57. Class 74 (2). As a splicing yarn finger 4 positioned outside the needle circle of a rotary needle cylinder machine is raised to withdraw its yarn, a clamping and severing means 8, positioned inside the circle, intercepts the yarn between needles and finger and, as the yarn is thereafter advanced by the needles, clamps it and simultaneously cuts it between needles and clamp and, when the finger is subsequently lowered and advanced to re-introduce the yarn, the clamp releases the latter the clamp and cutter, the finger 4, their slides 24, 37 and the levers 48, 49, are carried on a plate 17, borne on a bracket 18 and pivotable in a horizontal plane about a screw 62, between positions in which the levers 48, 49 are and are not operated by their cams. The finger 4 is moved by a slide 24 acting on the tail end of the finger through a ball and socket joint 23, 22; and the pivot pin 21 of the finger works in an elongated pivot hole, so that the finger moves into and out of operation with a combined swinging and axial movement. The clamping and severing means 8 comprises stationary clamping and shear blades 11, 12 and, pivoted thereto, coacting clamping and shear blades 7, 9. The blades 7, 9 are operated through a second slide 37, acting through linkages 36, 34, 33. The slides 24, 37 are actuated, against the action of return springs, by cams 55, 56 on a shaft 57 driven by chain and sprocket from the power input shaft 61, the cams acting through levers 48, 49 (not shown). The plate 17 is moved to the inoperative position of splicing yarn finger, clamp and cutter, against the action of a spring, by a cam or cams 75 on a drum 71 rotated from shaft 61 by pawl and ratchet 72, 73, under control of a pattern chain 74. The cam acts on the plate 17, through an arm 78 carrying an offset pin 79 which extends through a slot in the free end of a link 82 pivoted at 83 to the underside of the plate. Inadvertent projection of the dial needles 94 in the area of the finger 4 and unit 8, when the latter are operative, is prevented by a shrouding shoe 93 carried at one end of a lever 89, the other end of which is connected to a rod 86 reciprocated in timed relation with the movements of arm 78, by an upward extension 85 of that arm, connected to the rod 86 by a pin and slot connection 87, 88 which provide some lost motion.
Patent GB-133960-A (GB)
IPC: B23Q11/00
Abstract: 133,960. Fourneau, E. April 9, 1914, [Convention date]. Drills.-Apparatus for removing dust produced in drilling rock comprises a suction device 3, with flared mouth 5, which surrounds a drill rod 2 and is pressed against the rock by a spring 4, air exhausted from the drill, or other compressed fluid, passing through a pipe 6 to withdraw the dust and eject it into a. reservoir of water covered with tar.
Patent GB-1259868-A (GB)
Title: Floor covering of composite material
Inventor: AFFELDT HANS
IPC: D06N7/00
Filed: 1969-03-13
Abstract: 1,259,868. Anti-slip coating. METALLGESELLSCHAFT A.G. 13 March, 1969 [13 March, 1968], No. 13400/69. Heading B2E. [Also in Division B5] A bonded fleece of continuous synthetic non-cellular filaments is provided with antislip and abrasion-resistant properties by coating with a natural or synthetic latex or a plastics material, either before or after an embossing treatment at the same surface. The web is subsequently bonded to a top layer for use as a floor-covering. The coating may be applied foamed, e.g. by spraying or by doctor blade, and may include pigments or fillers. Examples of binder and filament materials are given. The finished floor-covering may additionally be provided with anti-slip properties by spraying with rubber latex after the component layers have been bonded.
Patent GB-184279-A (GB)
Title: Improvements in and relating to apparatus for the analysis and recording of gases
IPC: G01N7/04
Filed: 1921-05-12
Abstract: 184,279. Dale, A. G. May 12, 1921. Gas analysis.-In gas analysis and recording apparatus, the gas passes without interruption through the apparatus, and periodically an oscillating element, such as a liquid piston, by sealing the inlet and outlet pipes 4, 5 of the first measuring-cylinder B, entraps a definite volume of gas in this vessel and thereafter forces the sample through an absorption vessel 16 to a recording vessel 20; and it is an essential feature of the apparatus that during the actual recording period, an alternative path as by pipes 7, 9, is provided for the passage of the gas, a valve 8 of the liquid-seal type at other times preventing a free flow in this direction. From the absorber 16, residual gas passes into the float, and this, after four-fifths of its maximum movement, engages the counterbalance weight 30 of a recording stylus 25; after a record has been obtained, the unabsorbed gas escapes throush a pipe 26, when this is unsealed by the fall of liquid in a vessel A in communication with the cylinder B. A siphon C intermittently empties the system.
Patent GB-135211-A (GB)
IPC: D06H1/04
Abstract: 135,211. H÷ltermand, J. Nov. 14, 1918, [Convention date]. Knot-tying devices.-Labels for use in laundries, cleaning and dyeing establishments, &c. are cut off a strip of fibre or the like, marked with a perforated number, and attached to the goods by a knotting-device consisting of a sewing-machine bar and needle and a device for tying a spooler's knot by means of a sliding and rotating hook and ether knotting-mechanism. For this purpose the thread, after passing through the goods 14 and label 10, is caught by a hook 15 and drawn down into the position shown in Fig. 5, the needle 13 being at the same time retracted. The thread is then caught by a book 17 and by means of it and a finger 18 formed into a loop as shown in Fig. 6. The hook 17 then advances, catching the thread again, and retires drawing it through the loop as - shown in Fig. 9. A knife sliding in a slot in the hook 17 then cuts the thread, and a spring in the same slot catches it and draws the knot tight on the hook being further drawn back, the finger 18 moving out of the way. A second spring on the hook 17 catches the end of the thread passing through the needle and draws it out ready for fastening another label.
Patent GB-167855-A (GB)
Title: Improvements in boxes or cases adapted to be converted into other articles
IPC: A47B85/00
Filed: 1920-05-18
Abstract: 167,855. Bellasis, B. M. May 18, 1920. Counters and like stands.-A box or case is so constructed that it may be divided into portions A, B, Fig. 1, which, when turned inside out, are adapted to serve as tables, counters &c. The box members of each portion A, B are connected together by hinges e, which allow the members c, d to be swung round so as to turn the parts A, B inside out. One of the tables, counters, &c. thus formed is held rigid by crossed stays, and the other by a bent stay v, Fig. 2. The parts of the tables &c. exposed to view are panelled, polished, or otherwise treated. The tables &c. may have curtain rods z and adjustable removable feet w. The various members are adapted to be secured together firmly in box form by bars l, Fig. 1, and screwed rods m, n passing through grooves &c. i, j, k in battens f, g h.
Patent GB-143534-A (GB)
Title: Carburetter for explosion engines
IPC: F02M3/12
Filed: 1920-05-18
Abstract: 143,534. Capobianco, A. di E. May 19, 1919, [Convention date]. Spray carburettors.-The carburettor has two nozzles, one t for starting and slow running located in a well p and discharging into the interior of a throttle valve v, and another l for normal running comprising two co-axial tubes m, n, the inner tube n being perforated by a series of holes q. The main nozzle l is fed from the float chamber a through an orifice c and a larger orifice k, and the fuel passage between these orifices is in communication with a tube h with an annular closed air chamber f provided with a plug i which is removed at starting to permit of the fuel attaining the same level in the chambers a, f. Fuel reaches the well p through the orifices q, r and is admitted to the nozzle t through an oriffice w. The well is open to an air supply, which may be heated, at s, and the nozzle t has a series of perforations, horizontal or helical, at x, and another series at y, the latter being adjustable by rotating the screwed part z of the nozzle. The Specification enters into a description of the function of the holes x at starting, of the tubes w, n during intermediate and high speeds, and of the chamber f, which is stated to compensate for the fluctuating pressure in the choke-tube and its effect on the flow of fuel during normal running, slowing- down, and accelerating. The main nozzle is stated to deliver at times an emulsion of air and fuel.
Patent GB-586428-A (GB)
Title: Improvement in filters
IPC: B01D29/41
Filed: 1945-05-31
Abstract: 586,428. Filters. ALSOP, S. May 31, 1945, No. 13697. [Class 46] A filter contains a removable filter pack composed of a series of filter units, each formed of two centrally-perforated thick pulp pads spaced from each other, flexible means such as a tie cord being provided for binding the units together. In the construction shown, a filter pack is made up from units, each consisting of two filter pads 7 connected at the edges by stitching 8 and enclosing spacing discs 9, the units together with separating washers 12 being connected together by a cord 16. The cord passes to and fro through notches in stiff washers 14 at the ends of the pack and through central apertures in the pads 7 and washers 12, the ends of the cord being tied together and covered by additional washers 19. The pads' 7 are preferably formed of layers of fibrous material, such as sulphate pulp and asbestos fibres of graduated density with the densest layers at the inner opposed surfaces of the pads. The spacer discs 9 may consist of stiff paper coated or impregnated with varnish or like material, which may also be applied to the inner surface or to both surfaces of each pad. The discs 9 may be dispensed with if spacing bosses are impressed on the inner surfaces of the pads before the varnish is hardened. Specification 586,427 is referred to.
Patent GB-628531-A (GB)
Title: Improvements in knitted fabrics and knitting machines
IPC: D04B11/00
Filed: 1945-06-01
Abstract: 628,531. Knitting-machines. WHYTE & SMITH, Ltd., and WOOLLEY, G. H. June 1, 1945, No. 13784. [Class 74 (ii)] To reduce the bulkiness at the join of each diamond shape of intarsia fabric, the two carrier rods 3a, 3b, of a straight-bar machine, having yarn carriers 4a, 4b, have their strokes increased and decreased by one and two needles respectively at the end of each traverse, so that at the junction of each diamond only single loops 30, 301 composed of two yarns are knitted in alternate courses. The carrier rods, which are reciprocated through a draw mechanism, are slidably mounted in cylindrical blocks 5 which in turn are rotatably mounted in slideblocks 6. The slide-blocks are raised and lowered in guides and the cylindrical blocks rotated by levers operated from the main camshaft. The carrier rod stops 18a, 18b, at each end of the machine, are adjusted by means of stepped cams 19a, 19b which are rotated at the end of each carrier rod traverse to shog the carrier rods. At the end of each traverse the carrier rods 3a, 3b are moved to the plain side of the needles and lowered so that the yarn is laid in the throats of the sinkers when the carriers are being shogged. One carrier 4b, the traverse of which is being decreased, is then shogged two needle spaces in the narrowing direction and the other carrier 4a, the traverse of which is being increased is shogged one needle space in the opposite direction. The carriers are then returned to their feeding positions for the next traverse. For providing consecutive diamonds of different colours a distance piece 22 may be inserted between the carrier rod and its stop to cause the rod and its carrier to traverse a different group of needles. Specifications 491,213 and 628,591 are referred to.
Patent GB-528552-A (GB)
Title: Improvements in luminescent materials and in electric discharge lamps comprising them
IPC: C09K11/68
Filed: 1939-05-09
Abstract: 528,552. Luminescent materials. GENERAL ELECTRIC CO., Ltd., JENKINS, H. G., and McKEAG, A. H. May 9, 1939, No. 13858. [Class 39 (i)] Luminescent material, which may be incorporated in a lamp, consists of or contains a substantial proportion of a luminescent tungstate mixed with a solid oxide of a different base to prevent blackening in manufacture or use. The luminescent tungstates mentioned are those of calcium, magnesium, zinc, cadmium and magnesium-cadmium, which may be suitably activated. The oxides used (a) must be a metallic oxide which is not acidic in the presence of moisture (b) must not be unstable in air, such as the alkaline oxides except lithium oxide and (c) must not be highly coloured. Suitable bases for the oxide mentioned are calcium, strontium, barium, magnesium, beryllium, zinc, cerium, thorium and tin. For the purposes of the invention zinc and magnesium are regarded as the same. The oxide is added in the proportion of 1-20 per cent, and preferably about 5 per cent of the weight of tungstate, and may be incorporated therewith either during the process of making the tungstate, or it may be added to tungstate already made, in which case the mixture is heated below its reaction temperature to cause the intimate association of the ingredients. Specifications 504,354 and 506,165 are referred to. Reference has been directed by the Comptroller to Specification 513,584.