baber/WOPTO huggingface dataset:
Patent GB-982331-A (GB)
Title: An impeller for a roots blower
IPC: F04C18/12
Filed: 1961-11-24
Abstract: 982,331. Roots' blowers. POLYSIUS G.m.b.H. Nov. 24, 1961 [Dec. 27, 1960], No. 42161/61. Heading F1F. Each lobe of an impeller for a Roots' blower has a profile made up of arcs of three circles centred on the principal axes, and preferably, as in Fig. 3, all centred on the major axis. The profile deviates from that required for perfect meshing by not more than 0À15% of the impeller diameter. The impeller may be made in three portions, a centre portion 32, 42, and two lobes 33, 43, the joints 35, 45 in the profile occurring at the joints between adjacent arcs. The parting lines 35, 45 may be straight or arcuate, and the three portions may be secured by welding, riveting, or by nuts and bolts. German Specification 415,864 is referred to.
Patent GB-960861-A (GB)
Title: Improvements in dust feeding means
Inventor: CONRAD STANLEY
IPC: F23J1/00
Filed: 1961-11-28
Abstract: 960,861. Ejectors. BABCOCK & WILCOX Ltd. Nov. 28, 1961, No. 42475/61. Addition to 885,510. Heading F1E. The dust feeding means described in the parent Specification are modified by means 18 discharging liquid into a mixing chamber 19a, Fig. 1, towards an outlet 19b so that the liquid entrains aerated dust in passing through the chamber. Dust from hopper 1 falls into aerating chamber 3 where it is aerated with air passing from conduit 7 through the cotton or ceramic membrane 6 and then falls through transfer chamber 10 into passage 15 through hood 14. Water emerging from jets 18 entrains the dust to form a slurry passing through venturi tube 19 into a secondary mixing chamber discharging into a sluiceway. Additional air may be drawn through conduit 12 past non-return valve 13. Secondary air may be regulated through an axially or rotatably movable windbox 23, Fig. 3, which has slots 30 corresponding to slots 22 in conduit 11 and slots 34 in a flexible sealing bond 33, a flexible section 32a permitting rotational or longitudinal adjustment of the windbox. In a modification secondary air may be supplied from the lower part of the aerating chamber 3.
Patent GB-1425530-A (GB)
Title: -iazo type photographic reproduction material
IPC: G03C1/58
Filed: 1973-09-10
Abstract: 1425530 Diazotype materials containing coupler generators LA CELLOPHANE 10 Sept 1973 [11 Sept 1972] 42515/73 Heading G2C A diazotype material comprises a diazonium salt and a binder in which is dispersed particles of a semi-conductor which has been sensitized to visible light but not to ultraviolet and on which is adsorbed an unstable compound to stabilize it, this compound being desorbed from the semiconductor on exposure to visible light and thus  decomposing and producing a coupler for the diazonium salt. Specified unstable compounds are triphenylmethylazides and specified semiconductors are TiO 2  doped with Cu and ZnO doped with Ni or Ni/Ce. Nylon, polyvinyl pyrrolidone, alcohol or chloride or vinyl chloride copolymers are specified binders. The material is imagewise exposed to visible light to produce a negative dye image and is fixed by uniform exposure to ultraviolet light to destroy the remaining diazonium salt.
Patent GB-1239880-A (GB)
Title: Improvements in or relating to a handle and swivel arrangement
Inventor: SEILAZ LEON
IPC: A47L11/40
Filed: 1969-08-27
Abstract: 1,239,880. Swivelling handles. J. & L. SEILAS A.G. 27 Aug., 1969, No. 42651/69. Heading B4K. A handle has a swivelling arrangement which comprises a part 2 which is attachable to a floor polisher, vacuum cleaner or like appliance and is pivoted at 4 to a housing 1 which carries a handle pipe 5 in which there is an operating rod 8, the handle pipe is retained in a given position by a spring 16 pivoting levers 10 and 13 to clamp a rod 18. The rod can be unclamped by rod 8 pushing an extension 10b so that the levers and spring assume a position as shown in Fig. 1. Release of rod 8 enables the levers and spring to reclamp rod 18.
Patent GB-1071360-A (GB)
Title: Improvements in and relating to phenol-formaldehyde resins and aqueous emulsions thereof
IPC: C08G14/06
Filed: 1964-10-20
Abstract: A phenol-formaldehyde resin or an aqueous emulsion of a low molecular weight phenolformaldehyde condensate precursor thereof includes oleamide as a softener for the resin. The emulsion may be prepared by adding oleamide to a mixture of the phenol and formaldehyde (or compound generating formaldehyde in the reaction, e.g. paraformaldehyde) in water in the presence of a base, then reacting these at a temperature between room temperature and the reflux point until a suitable product is obtained, after which the pH may be brought to 2.5-5.0 by adding an acid.  10-35 gms. of oleamide may be added per mole of the phenol.  Suitable phenols are phenol itself, the cresols and the xylenols, and the preferred molar ratio of formaldehyde to phenol, although excess is used, is not more than 1.5:1, giving a product in which the ratio is at least 1.2:1. The base may be Ba(OH)2, Ca(OH)2, or a quarternary ammonium base, and is preferably a tertiary amine.  The acid may be boric or metacresotinic or aminosulphonic or an ammonium salt of these. Further phenol may be added after the acidification.  The emulsion preferably contains 20-40 ml. of water per mol of phenol, and may be used to impregnate hard paper or a textile or other fibrous material. In examples oleamide is added to a refluxing aqueous solution of phenol and paraformaldehyde and triethylamine.  After cooling ammonium sulphanilate or aminosulphonic acid is added, with or without further phenol or nonylphenol.  The resin mixtures are then used to impregnate sheets of paper.ALSO:Fibrous bases, i.e. paper, may be impregnated with a phenol-formaldehyde resin or aqueous emulsion thereof which includes oleamide as a softener for the resin.
Patent GB-1206445-A (GB)
Title: Crinkle yarn apparatus
Inventor: HOLE FREDERICK WILLIAM
IPC: D02G1/14
Filed: 1967-09-20
Abstract: 1,206,445. Crimping yarns. JOHN HEATHCOAT & CO. Ltd. 6 Sept., 1968 [20 Sept., 1967}, No. 42808/67. Addition to 1,088,935. Heading D1F. In apparatus for crinkling or crimping yarn according to the parent specification, the movable sinker elements 8 and the spaces between the sinker blocks 6 are inclined to face towards the direction from which cam means, as at 9, engage the elements. The movement of each element into a space is opposed and "overshoot" prevented by a device 10 comprising a sinker element-engaging cam in the form of a ball race 12 positioned and loaded by a spring 11 adjustable by rotation of a nut 13 screwing onto a cam-supporting rod 14. Yarn leaving the crimping head passes around a roller adjacent thereto, Figs. 5 and 6 (not shown) in order to isolate winding tension from crimping tension and to cool the yarn to a temperature at which the crimp is unaffected by the former tension. The blocks 6 are bent with respect to the head, Fig. 3 (not shown).
Patent GB-1517807-A (GB)
Title: Reserve batteries
IPC: H01M6/32
Filed: 1975-10-17
Abstract: 1517807 Reserve batteries McMURDO INSTRUMENT CO Ltd 17 Oct 1975 42843/75 Addition to 1374771 Heading H1B A reserve battery as in claim 1 of Specification 1,374,771 has an end electrode plate 20 apertured (at 23) to expose to an equalizing aperture 13 in an adjacent plate 11 a surface 31 of the battery container, said surface 31 being formed of the same material as the surface 22 of the adjacent electrode plate, or of a conductive material different from any used in the electrode surfaces of the battery and inert to the battery electrolyte, or which in operation of the battery does not yield any substance deleterious to battery performance. Typically the upper surfaces of electrodes 11 and 20 are of Pb, and the lower of Pb oxide, in dense non-porous form, and the electrolyte is HClO 4 , HBF 4  or possibly HNO 3 . The upper surface 31 of end-plate 30 is of Pb oxide; similarly the lower surface of the other end plate is of Pb. Alternatively the surfaces 31 and 51 may be of Ni, C or C paint.
Patent GB-1365885-A (GB)
IPC: A01D45/22
Filed: 1970-09-09
Abstract: 1365885 Viners MATHER & PLATT Ltd 8 Dec 1971 [9 Sept 1970] 43067/70 Heading A1F In a mobile viner for gathering peas or beans the rear reclamation unit is omitted and the length of the riddling and beater chamber extended, the ratio of riddle drum length to riddle drum diameter being at least 2.60:1 preferably less than 3.20:1, and more preferably 1:3. In the Figures white arrows indicate crop, black arrows indicate vines and other non- crop material, and hatched arrows indicate a mixture. As the viner advances over the field the crop is picked up by the tined belt 31 and conveyed by the elevator 32 to the inside of a rotating riddle drum 34, open front and rear, which consists of axially spaced beams 38 with detachable riddle screens 39 of plastics coated metal between them. Within and concentric with the riddle drum is a beater drum which revolves much faster than the riddle drum and carries for the greater part of its length beater paddles 36, but towards its rear end forks 37 only. Pods and other waste matter are discharged from the rear of the riddle drum directly onto the ground. The peas or beans pass through the riddle screens 39 onto an apron 40 in the form of an endless belt mounted on non- circular rollers 41, and roll down it into a bucket conveyor 42, being subjected meanwhile to an air blast from a winnowing arrangement 43. Further waste material is discharged off the top of the apron 40. The bucket conveyor 42 merges with a bucket elevator 44 which terminates at its top in a rotating mesh open-ended cleaning cylinder 45 having at its top and exterior a meshing rotating cleaning brush 46. A suction waste removal duct 47 is provided at one end of the cylinder 45 to deliver waste material back to the elevator 32. Alternatively the final waste material may be discharged axially of cylinder 45 onto the ground. Below the cylinder 45 is a hopper system 48, (Fig. 5), consisting of a main hopper 49 and a subsidiary hopper 50, which is swung to collect the crop while the main hopper 49 is being discharged.
Patent GB-943450-A (GB)
Title: Ring mill with hydro-pneumatic springing
IPC: B02C15/04
Filed: 1961-12-04
Abstract: 943,450. Edge-runner mills. E. G. LOESCHE. Dec. 4, 1961 [Jan. 20, 1961], No. 43231/61. Heading B2A. A mill having grinding elements 25, 30, Fig: 1, rolling against one another comprises hydro-pneumatic, means 12 for pressing the elements against one another, the contact pressure of the grinding elements being transmitted through the piston rod 32 of a hydraulicallyactuated pressure cylinder 34 acting on one of the grinding elements. Four pressure cylinders may be provided connected by flexible pipes 36 to hydropneumatic accumulators 12 and a hydraulic pump 2, pipes 39 equalizing the pressure acting in the cylinders. The rods 32 of the pistons 33 of the cylinders are connected by levers 26, 28 to the grinding elements 25 which roll on a grinding ring 30 rotatable by a transmission 31 and the accumulators permit the rolls to lift from the ring when extraneous hard bodies reach the grinding surfaces. The cylinders 34 are mounted on pivots 35 and hydraulic pressure from the pump 2 and controlled by a valve 14 can be supplied to the lower ends of the cylinders to raise the rolls 25. The ring 30 may be raised hydraulically after the rolls have been raised to enable the transmission 31 to be removed for repair. The mill may be provided with means for sifting the material before it reaches the grinding elements and openings may be provided in the housing of the mill for the supply and discharge of air. In further embodiments, the rolls 50, shown on the lefthand side of Fig. 5, are pressed into contact with the grinding ring 30 by a pressure ring 52 bearing on steps 51 on the rolls and connected to the rods 32 of the pressure cylinders 34, and the rolls 54, shown on the right-hand side of Fig. 5, are pressed into contact with the grinding ring by a pressure ring 56 connected to the rods 32 and by arms 55 to the grinding rolls.
Patent GB-1023627-A (GB)
Title: Magnetic information store
IPC: G11C7/02
Filed: 1964-10-26
Abstract: 1,023,627. Magnetic storage devices. INTERNATIONAL BUSINESS MACHINES CORPORATION. Oct. 26, 1964 [Nov. 21, 1963], No. 43506/64. Addition to 998,891. Heading H3B. [Also in Division H1] The tubular storage device described in the parent Specification is modified by the use of hole pairs for the conductors B in the form of two parallel slits 18 arranged longitudinally of the tube 12, each conductor B being made of strip material. The tube is formed by a magnetic U-shaped trough 14 and a magnetic closure plate 16, the same or different materials being used. The magnetization characteristic of the magnetic material need not be rectangular.
Patent GB-1021501-A (GB)
Title: Improvements in or relating to tilting relays
Inventor: EVENDEN REGINALD STANLEY
IPC: H01H29/20
Filed: 1960-12-19
Abstract: 1,021,501. Electromagnetic relays. ELEC. TRICAL THERMOMETER CO. Ltd. Feb. 21, 1962 [Dec. 19, 1960], No. 43651/60. Heading H2B. A tilting relay comprises a beam 8 pivoted between its ends and carrying at least one mercury switch 6, the beam having a counter. weight 18 (Fig. 2, 3, not shown) to bias it to a first position and the beam also carrying a curved armature 9 co-operating with an electro. magnet 14, the armature 9 moving in a plane perpendicular to the magnet axis to bridge polepieces 15, 16, when the electromagnet is energized and thereby tilting beam 8 to a second position and operating the switch 6. Counterweight 18 is adjustable along screw 17 and is carried by a U-shaped bracket 10 which is fixed to beam 8 and pivoted between pivot screws 11 (Fig. 2, not shown). The bracket 10 carries a guide 13 for the leads 4, 5, to the switch contacts. In another embodiment the beam has two stable positions, and two electromagnets co-operate with armatures upon opposite ends of the beam. In another arrangement the beam has two armatures, one at each end, and the electromagnet has its effective poles disposed adjacent the two armatures. The polepieces may be both located upon the same side of the armature or located upon opposite sides of the armature in the first embodiment.
Patent GB-438168-A (GB)
Abstract: 438,168. Vehicle-lamp mountings. CLARKE & CO. (MANCHESTER), Ltd., H., ROWLINSON, R., George Street, Patricroft, and MOTTERSHEAD, F., 121, Westwood Crescent, Monton, Eccles, both in Manchester. Dec. 21, 1934, No. 36759. [Class 75 (iii)] An electric battery cycle or like lamp 3, adapted to provide a white front light and a red rear light, is pivoted by means of a yoke 6 on a spindle 9 carried by a bracket 4 clamped to a fork 5 &c., and is held on the operative position transverse to the frame by means of a pin 12 on the spindle engaging a slot 13 of smaller width in the arm 8 of the voke under the action of a spring 14. The lamp can be swung through 90‹ in one direction into an inoperative position alongside the frame in which the pin 12 engages a second similar slot 16 or through 90‹ in the opposite direction to bring the pin 12 into register with a wider slot 17 and permit removal of the lamp from the bracket. The pressbutton switch 19 is controlled by the spindle 9 which is provided with a recess 45 to allow the switch to open in the inoperative position of the lamp. In a modification, the slots 13, 16, 17 are all of greater width than the pin 12 and a plate having a single slot in register with the slot 17 is fixed under the arm 8. In a further modification, the arm 8 is provided with a star-shaped opening 22, Fig. 5, and the lower plate 24 with a square opening 23, Fig. 6, the spindle 9 having a square portion immediately above the arm 8 so as to provide operative and inoperative positions at right angles to one another and two positions at 45‹ thereto in which the lamp can be withdrawn. The lamp shown is identical with that described in Specifications 438,133 and 438,169, which are referred to,
Patent GB-1108354-A (GB)
Title: Bearings
Inventor: CAMPBELL CHARLES
IPC: C23C4/10
Filed: 1963-11-06
Abstract: A wear-resistant element comprises a wear-resistant composition flame-sprayed on to a substrate e.g. stainless steel, which substrate may carry an undercoat e.g. nickel chromium, said composition being such that it contains at least 65% by weight of nickel oxide and/or cobalt oxide mixed with an additive consisting of either one or more fluorides, phosphates or borates of magnesium, calcium, barium or strontium, and/or lead monoxide. The proportion of the additive aforesaid may be 5 to 35% by weight; and when the element is used in an oxidizing atmosphere, a proportion of the nickel oxide or cobalt oxide may be replaced by nickel or cobalt metal that is intended to slowly oxidize in use, at least 30% of the surface area being constituted by the said oxide.  The composition may also contain an oxide of aluminum, magnesium of zinc, a dioxide of tin or titanium, or a mixture thereof, which is capable of forming a eutectic mixture with the nickel and/or cobalt oxide to facilitate flame spraying. Examples of the composition and preparation thereof for flame spraying are described; and for details of these examples the specification should be referred to.  In one of these examples, the composition is first milled and then extruded together with a binding material to form rods that are subsequently sintered before flame spraying is carried out, the binding material being decomposed during the sintering operation.  In other examples the dry composition is either sprayed immediately or first sintered in blocks that are crushed and sieved before the spraying operation is performed.
Patent GB-1124946-A (GB)
Title: Improvements in or relating to apparatus for charging an electric storage battery
Inventor: PAYNE IVAN SALISBURY
IPC: H02J7/02
Filed: 1964-10-28
Abstract: 1,124,946. Charging batteries. LANSING BAGNALL Ltd. 19 Oct., 1965 [28 Oct., 1964], No. 44017/64 Heading H2H. [Also in Division H1] The charging of an electric storage battery is interrupted by a switch controlled by a timing device which is rendered operative by a relay when the battery voltage reaches a predetermined value, the relay being controlled by a bridge network including a transistor and a Zener diode. As shown, Fig. 1, a battery 14 is connected to an alternating current supply by a plug 13 through a transformer 11 and full-wave rectifier 12 under the control of a charging device comprising units II, III connected through terminals a-e. Closure of a microswitch Ms in unit II initiates charging until the battery voltage reaches a predetermined value at which a transistor T in unit III becomes conductive to energize a relay Ry closing contacts S in unit II, thereby energizing a timing motor Tm which runs for a preset duration, of up to five hours, before opening microswitch Ms and stopping the charge. The battery voltage is applied across a network comprising a series resistor chain, including a predetermined voltage setting rheostat R L , in parallel with a series combination of a resistor R and Zener diode Z. The transistor T is responsive to the difference between the voltage at the slider of the rheostat R L  and the voltage of the Zener diode. The units II, III are arranged in a rectangular open-topped cast-alloy box 20, Fig. 4, a terminal block 25 being provided for the connections a 1 -e 1 . The motor Tm, not shown, drives a shaft 24 on which is mounted a composite disc 31, 32 by a frictional coupling. The discs 31, 32 are angularly adjustable by a bolt 39 to alter the time delay. The disc 31 has a semicircular portion 31b provided with timing masks, visible through the transparent cover of the box 20, and step 52 which engages a lever 28, pivoting about a point 28a, which at the end of the time delay opens the microswitch MS. The microswitch is closed to initiate charging by the operation of a knob 50 which moves the lever 28 through a linkage 45.
Patent GB-938703-A (GB)
Title: Rotary electrical frequency converters
IPC: H02K3/26
Filed: 1961-12-08
Abstract: 938,703. Control of A.C. motors. NORMACEM. Dec. 8, 1961 [March 9, 1961], No. 44019/61. Class 38 (3). [Also in Group XXXV] A rotary electric frequency converter, Fig. 1, comprises a disc rotor 1 carrying a flat winding 2 of lamellar conductors disposed in a planar air-gap defined by an unwound stator 10, 11 of magnetic material devoid of salient poles. As shown, the rotor is without iron, its winding being printed on to the two faces of an insulating disc 3 secured via insulating washers 25, 26 and plastic or metal half-hubs 23, 24 to a driven shaft 19. Mounted in container-forming non- magnetic side-plates 12, 13 are the ring-shaped yokes 10, 11 which may be of soft ferrite or spiralled magnetic strip, and input and output brushes 7, 8 which bear, respectively, against three circular tracks 4 . . . 6 printed either separately or at the same time as the winding, and a bare circular zone 9 of the winding conductors. The shaft is mounted in ball or needle roller bearings 17, 18 and axially located by covers 20 ... 22 and a shoulder 27. When fed via a variable transformer 28, Fig. 2, from a 3-phase supply of frequency F 1  and driven by a variable-speed motor 29, the converter produces an output of frequency F 2  which may be fed to the stator of one or several simultaneously controlled asynchronous motors 30 driving, e.g. knitting needles. Alternatively the output is fed via slip-rings 32 to the rotor of an asynchronous motor 31 for speed control or power factor improvement purposes, in which embodiment the motor 31 drives the converter and has its stator supplied at the frequency F 1 . Control of the phase of the voltage at brushes 8 is by angular displacement of the brushes or of the two coupling- plates which join the converter and motor 31. Reference has been directed by the Comptroller to Specification 874,394.
Patent GB-919152-A (GB)
Title: Improvements in or relating to methods of manufacturing crankshafts
IPC: B21K1/08
Filed: 1959-12-30
Abstract: 919,152. Making crank-shafts; forging. FERTIGUNGSTECHNIK UND MASCHINENBAU G.m.b.H. GES. FUR. Dec. 30, 1959 [Dec. 30, 1958; April 9, 1959], No. 44193/59. Classes 83 (2) and 83 (4). A hollow crank-shaft, Fig. 4, is made by radially swaging a tubular blank 1, Fig. 2, on a mandrel 2 to form coaxial journal and crankpin portions 4, 5 with intermediate enlarged web-forming portions 7, removing the mandrel and bending the web portions 7 to the required shape 7a, Fig. 4. The blank 1 is swaged by radially-acting hammers 3 with profiled inner ends 6, 8, 9. The ends of the blank are then closed by radial hammers 11, Fig. 3, and the web portions 7 are bent in a device which holds parallel the journals 4 and pins 5 whilst the journals 4 are bent in the direction 12. In another embodiment, Fig. 8, the tubular blank 1 has axial pressure applied thereto during swaging by a sleeve 18 carried by the mandrel 2 and a member 19. The mandrel 2 is mounted in an axially movable gripping head 20 to which the member 19 is connected by rods 21 passing through the forging box 22 which drives the hammers 3. Alternatively axial pressure may be applied by a nut screwed on a threaded end of the mandrel, Fig. 6 (not shown), or by a sleeve forced thereon, Fig. 7 (not shown).
Patent GB-1512556-A (GB)
Title: Method of and apparatus for sensing strain in strained members
IPC: G01L1/22
Filed: 1975-10-28
Abstract: 1512556 Measuring strain electrically COAL INDUSTRY (PATENTS) Ltd 10 Sept 1976 [28 Oct 1975] 44324/75 Heading G1N(A) Strain in a member 1 is measured by welding two mounting blocks 3 thereto while they are bridged by a template 5, the template then being replaced by a strain element 10 comprising strain gauges 18 spaced around a circular hole 12 in plate 11. The gauges are connected in a Wheatstone bridge and arranged to operate alarms or control the means straining the member 1, which may be in a mine winder brake, when the strain reaches a pre-selected magnitude.