baber/WOPTO huggingface dataset:
Patent GB-667367-A (GB)
Title: Improvements in mining apparatus
IPC: E21C29/12
Filed: 1948-07-05
Abstract: 667,367. Mining machines. MAVOR & COULSON, Ltd., and TOWLER, J. M. May 5, 1950. [July 5, 1948] No. 17976/48. Class 104 (ii). [Also in Group XXV] A mining machine is propelled along the seam by a cylinder and ram apparatus operating a gripper which engages with catches spaced at intervals along a haulage cable and has a device which moves the gripper crosswise into engagement with a catch prior to the working stroke and out of engagement with a catch prior to the return stroke of the apparatus. The machine has upper and lower hydraulically operated rams 21, 22 provided with cable grippers 15, 16 and two sets of units each unit comprising three sets of cylinders 35, plungers 36 and pins 38. Operation of a master valve 25 in the hydraulic pressure line moves the plunger 36 and pin 38 of the upper cylinder of the forward unit into contact with a toe 39 on the opposite end of the arm of the gripper 15, so partially rotating gripper 15 into engagement with catch 31<SP>2</SP> and a finger 43, formed on the gripper 15, to a position below a track 46 of a cam 45 and at the same time moves plunger 36 and pin 38 of the middle cylinder of the rearmost unit into contact with a heel 42 on the opposite end of the arm of gripper 16 to move gripper 16 clear of catch 31<SP>1</SP> and a finger 44, formed on gripper 16, to a position below a track 47 of the cam 45. With the components in this position the apparatus is moved forward by admitting hydraulic pressure to a cylinder 17 for the ram 21. Upon reaching the end of the stroke the gripper 15 is moved clear of the catch 31<SP>2</SP> and the gripper 16 is moved into driving engagement with a catch 31<SP>3</SP> to move the machine forward when hydraulic pressure is applied to a cylinder 19 for the ram 22. The grippers 15, 16 are maintained in their predetermined position by by the tracks 46, 47 when the machine is moved forward. The machine may be operated in either direction and has at each end a wedgelike cutter head formed with a number of cutter heads 12, 13 to operate at different seam levels and a shovel-like cutting device. to throw the coal outwardly therefrom. The machine may be provided with one stationary and one reciprocable gripper if required to operate only in one direction. The haulage cable is built up of a series of short bars 30A, 30B, Fig. 4, joined by cupped collars 31A screwed on bar 30B and bearing against a part spherical end 49 of bar 30A. Alternatively, as shown-in Fig. 5, both ends of the bars 30C, 30D may be part spherical 51 and joined by a split collar 52, 53 held in position by a ring 54. The Provisional Specification mentions an arrangement in which the machine is guided by a rail made up of H-section bars articulated together and provided at spaced intervals with holes with which the gripping devices engage. Mention is also made of the gripping device consisting of pawls or collets which pass the projections in one direction without operative engagement.
Patent GB-717216-A (GB)
Title: Improvements in or relating to automatic telephone exchanges with staff locators
IPC: H04M15/08
Filed: 1952-07-17
Abstract: 717,216. Automatic exchange systems. TELEFONAKTIEBOLAGET L. M. ERICSSON. July 17, 1952 [July 23, 1951], No. 18140/52. Class 40 (4) In a P.A.B.X. system, subscribers absent from their phones can be summoned by lamp signals. When subscriber A1 closes his loop, line L1 is connected over register finder RS to a free register REG. If staff location is required, the subscriber dials "direction" digit 9 so that the register connects itself over the ninth contact k2 to marker M, which connects the calling line with signalling circuit P over selector SL1. An identifier D is operated to register the calling number in the marker which transfers this number to the circuit P. P returns buzzer tone and the subscriber dials the wanted number which is registered in P and lights appropriate lamps in lamp tables LT for a time limited by a thermal contact. The calling subscriber may hang up if he so wishes. The called subscriber answers from any instrument, say A2, by dialling an "answer" digit 8 which is entered in a register which connects itself over the eighth contact k2 to the marker M. The marker causes D to signal the identity of the answering line to the marker. At the same time by means of the eighth contact k1 the register causes the calling number to be transferred from P to the marker M which then sets up the connection over a link circuit LC. Modification. In Fig: 1b, the registers are connected to the link circuits LC over register finders RS. The signalling circuit P is set by signals from the register so that the calling party must replace his handset and wait for the called party to answer. Second modification. The signalling circuit P can reach all the subscribers' lines through a selector PS, the position of which identifies a line. Incoming calls on exchange line HL can be connected to the staff locating means.
Patent GB-587790-A (GB)
Title: Improved process for the catalytic conversion of hydrocarbons
IPC: B01J8/18
Filed: 1944-09-22
Abstract: <PICT:0587790/III/1> In processes for the catalytic conversion of hydrocarbons in which the catalyst is cycled between a conversion and a regeneration zone, the conversion rate in volume per cent. is maintained substantially constant by increasing the ratio of catalyst to oil by weight passing through the conversion zone as the activity of the catalyst diminishes.  A cracking plant of conventional arrangement comprising reactor 28 and regenerator 78 with associated separators 38, 52, 104, 92 and hoppers 44, 96 is described and the stand pipe 22 through which the regenerated catalyst is rtcycled to mix with the feed in line 18 is provided with a valve 24 by which the amount of catalyst mixed with the oil may be regulated.  Examples are given in which the original catalyst/oil weight ratio of 1/1 is increased after about 100 hours running to 2/1 and later to 2.4/1 . In another example the ratio of 1.5/1 is increased first to 2.7/1 and finally to 5.5/1 .
Patent GB-121990-A (GB)
Title: Improvements in Airplanes.
Inventor: JACKSON JOSHUA GASKILL
IPC: B64C39/00
Filed: 1917-12-07
Abstract: 121,990. Jackson, J. G. Dec. 7, 1917. Aerial machines without aerostats; planes, construction and arrangement of.-In aeroplanes of the kind provided with dihedral main planes and a tail portion comprising dihedral planes with a vertical fin underneath, the arrangement being such that the laterally projected areas of the dihedral surfaces equals the area of the fin, the dihedral and vertical tail-planes are made of increasing width from front to rear, and the main planes are arranged at an angle of incidence slightly greater than that of the tail-planes. Figs. 4 and 5 show the application to a hydro-aeroplane. The fuselage 23 is fitted with dihedral main planes 33 and tail-planes 28, 29 and with a fin 27. One or more additional main planes 34 may be provided. The invention is shown also applied to a flying-boat and to a land machine.
Patent GB-239663-A (GB)
Title: Means of supplying thermionic valves from alternating current mains
IPC: H04B1/16
Filed: 1924-07-30
Abstract: 239,663. Elven, R. S. July 30, 1924. Thermionic amplifiers and detectors.-In order to prevent hum due to the use of alternating current as filament or plate supply, the grid circuit of the detector valve 1 includes a, polarizing battery 5 arranged to give the grid a negative potential of from 3 to 8 volts. The battery 5 is placed between the tuned input circuit 2, 3 and the mid-point of a resistance 6 connected across the filament leads from the supply transformer. The plate current is taken from a condenser 9 which may be connected through a rectifier to an A.C. supply. The battery 5 may be replaced by a condenser of larger capacity than 0.01 microfarad, which may be shunted by a resistance of over 10 megohms. When the detector is followed by a low-frequency amplifier, the grid of the latter valve may be biassed by including a resistance (shunted by a condenser) between the condenser 9 and the filament tapping 6, and connecting the amplifier grid circuit to the negative end of this resistance. Specification 211,160 is referred to.
Patent GB-633570-A (GB)
Title: Improvements in desk appliances for holding loose sheets
IPC: B42D5/04
Filed: 1947-07-10
Abstract: 633,570. Filing paper ; memoranda appliances. DAVIS, H. G. July 10, 1947, No. 18310. Convention date, Nov. 15, 1945. Drawings to Specification. [Classes 16 and 146 (i)] The subject-matter of this Specification is substantially the same as that described in Specification 615,690 except that the metal frame structure is replaced by a moulded plastic structure.
Patent GB-1465271-A (GB)
Title: Reinforcement of castable materials
IPC: E04C5/01
Filed: 1973-04-16
Abstract: 1465271 Reinforcing with short wire strands BEKAERT SA NV 2 July 1974 [16 April 1973] 18322/73 Heading EIW  Cast-material is reinforced with short wire strands, having a thickness between 0.1 and 1.0 mm and a length to thickness ratio in the range 50 to 200, by including within the mix reinforcing members comprising a plurality of single strands bonded together by a binder which binder is subsequently disintigrated so as to release the individual strands for final mixing. The members may be bundles of straight or helical wires or straight wires with bent ends. Alternatively the members may be arrays of straight or bent wires. The cross section of each wire may be circular or flattened and each wire may be coated with zinc, aluminium or organic material and have a roughened surface. The wires may be iron or steel alloyed with nickel or chromium. The cast material may be mortar, concrete, rubber or plastics. In hydraulic mineral cements the binder may be polyvinyl alcohol and the disintigration time varied by the incorporation of various amounts of non water soluble polyvinyl acetate. Other soluble binders may be: urea based resins, polyacrylate, albumins, gelatins, caseins or cellulose derivatives e.g. methylhydroxy- or carboxy-cellulose. Disintigration may be produced by other constituents of the mix than water and may be by normal or special additives or by heat i.e. by introducing steam. A process for producing the reinforcing members is illustrated in Fig. 4 where a number of wires are brought into close proximity in the same plane and passed through a bath 5 of liquid adhesive, excess adhesive removed by wipers 9, dried in chamber 6 and finally cut into short lengths by a cutter 7. In an alternative process scrap cables may be used producing bundles of large pitch helical strands.
Patent GB-1174368-A (GB)
Title: A Breaking Device for an Electric Circuit According to the Closed Circuit Principle for Initiating An Explosive Charge.
Inventor: THORSTENSSON GUSTAV YNGVE
IPC: F42C11/00
Filed: 1968-04-18
Abstract: 1,174,368. Mine fuzes. FORSVARETS FABRIKSVERK. 18 April, 1968, No. 18329/68. Heading F3A. [Also in Division G4] A readily frangible device for opening an electric circuit in the event of device being fractured comprises a body 2, Fig. 1, of brittle plastic material having an embedded loop conductor 3 which breaks when the body 2 is fractured. The device is used in a closed circuit electrical relay system for detonating land mines. The body may be of shellac or sealing wax and is enclosed in a casing 1 of paper or plastics material.
Patent GB-1416837-A (GB)
Title: Monoazy dyestuffs their preparation and use for preparing fast  dyeings and prints
IPC: C09B29/50
Filed: 1974-04-26
Abstract: 1416837 Pyrazolone monoazo dyestuffs HOECHST AG 26 April 1974 [28 April 1973] 18388/74 Heading C4P Monoazo dyes have the formula in which A is straight or branched chain lower alkylene, X is O to S, Y is lower alkym or -COO- lower alkyl, R is H, Cl or lower alkyl, and R 1  is H, Cl, Br or lower alkyl. The term "lower" denotes groups having 1-4 carbon atoms. A preferred structure is The dyes may be applied from aqueous dispersion or from organic solvents and give yellow dyeings or prints with, e.g. cellulose esters, polyesters or polyamides.
Patent GB-925906-A (GB)
Title: Improvements in fabric bindings or trimmings
Inventor: MARDEN ALICE
IPC: A43B23/02
Filed: 1959-06-01
Abstract: 925,906. Binding edges of non-metallic sheet material; woven fabrics. R. L. INDUSTRIAL BINDINGS Ltd. Sept. 1, 1960 [June 1, 1959], No. 18566/59. Classes 42 (1) and 74 (2). The edge of a shoe upper is covered and reinforced by sewing the upper margin of a tape to one face of the upper (with the edge of the tape coinciding with the edge of the upper), then folding the tape upwards on to itself, over the edge of the upper and down on to the other face of the upper, where it is secured by adhesive. The margin of the tape which lies againstone or other face of the upper is woven stronger and stiffer than the remainder. In one example, the tape has an edge zone containing crimped nylon warp yarns, a middle zone containing twisted rayon warp yarns, and a zone at the other edge containing two warp yarns of untwisted nylon alternating with one of twisted rayon. In another example, the tape has only two zones, one containing untwisted rayon and the other containing two yarns of stretched saponified cellulose acetate alternating with one twisted yarn of rayon. The weft in both examples is spun rayon.
Patent GB-154275-A (GB)
Title: Improvements in or relating to internally toothed wheels
IPC: F16H55/08
Filed: 1919-07-26
Abstract: 154,275. Harrison, W. L. July 26, 1919. Toothed wheels.-The tooth profiles of a gear pair comprising a pinion X meshing with an internally toothed gear Ware designed to produce a path of contact D B E, which conforms substantially to the are of a circle struck to the same centre throughout its length crossing the pitch lines of both gears. The centres of the gears X, W are at U, V. The tooth profiles of the gear W are straight inclined at a useful angle V B C. A perpendicular V C meets the line B C, which is bisected at a point A, which is the centre of the path of contact D B E.
Patent GB-741188-A (GB)
Title: Improvements in or relating to a method of and apparatus for continuously cooling a stream of fluid
Inventor: POOL LEONARD PARKER
IPC: F25J3/04
Filed: 1953-07-07
Abstract: 741,188. Cold separation of gases. AIR PRODUCTS, Inc. July 7, 1953. No. 18751/53. Class 8(2). In an air separation process wherein carbon dioxide is deposited in a passage 28 of a cold section 21 of a counter current heat interchanger 19 having a warm section 20 both sections 19, 20 being cooled by low-pressure nitrogen returning from a conventional twostage column 50 through passages 23, 27 respectively, re-evaporation of the carbon-dioxide deposited at the cold end of the passage 28 is effected by switching the air and nitrogen paths by means of valves 29, 30, 31, 32 in such a manner that the returning nitrogen enters the passage 28 at the warm end thereof and thereby has its direction of flow reversed and its temperature increased to at least that at which deposition occurs. In operation and with the valves 29, 30, 31, 32 in the setting shown clean compressed air traverses the valve 29, a duct 33, a passage 24 in the warm section 20 in countercurrent heat exchange with returning nitrogen and oxygen in passages 23, 22, a duct 34 the valve 30, a duct 35, passage 28 at the top cold end of which deposition occurs, a duct 36, the valve 30, a duct 37, valve 32 and a duct 38 to the high-pressure stage 51 of the column 50. Counterflowing nitrogen from the top of the low pressure section 52 traverses a duct 64, an air liquefier 65, a duct 42, valve 32, a duct 43, valve 31 and a duct 44 to enter the passage 27 at the cold end of the section 21. The returning nitrogen then picks up carbon dioxide deposited at the base of this passage during the previous cycle and traverses a duct 45, valve 31, a duct 46, passage 23, a duct 47 and valve 29 to an outlet 48. Central passageways 26, 22 of the sections 21, 20 are traversed by returning product oxygen flowing to an outlet 41. On turning the valves 29, 30, 31, 32 simultaneously through a quarter of a turn the air and nitrogen passages of section 20 are switched without change of flow direction whereas in the cold section 21 returning nitrogen now enters passage 28 at the bottom, i.e. the warm end and is warmed before reaching the carbon dioxide deposited at the top cold end during the previous cycle. Air now enters the passage 27 at the top end with consequent reversal of direction of flow and deposits its carbon dioxide content at the bottom end of the section 21 which now becomes the cold end. One portion of the so purified air in duct 38 traverses a valved duct 67 and is cooled in a turbo-expander 69 before being fed to the lowpressure section 52 and a second portion is partially liquefied in the liquefier 65 before rejoining the main stream being fed to the highpressure section 51. In a modification the turbo-expanded portion of air is warmed by the base of the warm section 19 and in a second modification high pressure nitrogen from the top of the high-pressure stage 51 is warmed at the base of section 20, expanded in the turboexpander and joins the low-pressure nitrogen in duct 42.
Patent GB-934795-A (GB)
Title: Internal combustion percussion device
IPC: B25D9/10
Filed: 1960-05-27
Abstract: 934,795. Percussive tools. F. N. BARD. May 27, 1960 [June 10, 1959], No. 18771/60. Class 124. [Also in Group XXVII] The piston 13 of a power hammer has an enlargement 13b serving both to pump fuelair mixture to the cylinder inlet port 40 and to draw and expel cooling air through a port 60, the piston 13 also draining cooling air via a check valve 52 into a chamber 50 containing the piston return spring 18 and expelling it via a check valve 54 and pipe 56 on to a continuously acting sparking plug 17. A shield 57 hinders entry of dust into the chamber 50 past a tool 14 releasable by a catch 72. Oil-resistant rubber blocks 43 ... 45 separated by metal rings 47, 48 cushion the piston 13, the ring 47 having a bronze piston guide 46. Fuel from a tank 23 is drawn by combined suction and capillary action via a tube 24 and a metering valve 26 into an air inlet 27, the resulting fuel-air mixture being acted on by the enlargement 13a so as to be drawn into and expelled from a transfer duct 62 via reed valves 28, 42 having guard plates 28a, 42a. For starting, a hand pump 30 draws fuel-air mixture from the duct 62 via a pipe 33 and delivers it to the upper end of the cylinder via a pipe 34.
Patent GB-125332-A (GB)
Title: Improvements in Electrical Heating Elements.
Inventor: PATE GEORGE
IPC: H05B3/16
Filed: 1918-11-16
Abstract: 125,332. Pate, G., and Barrett, N. C. Nov. 16, 1918. Resistances for heating. Elements for boiling- plates, hot-plates, ovens, and other electrical heating-appliances are constructed with two or more open parallel resistance coils or helices supported at different levels on formers, and arranged so that either may be in circuit or both in parallel. Fig. 2 shows a vertical section of a circular element. The formers 2 are constructed with openings 3, 3', at different levels, to take the resistance coils. Posts 5 keep the upper resistance from sagging. A row of holes 6 is provided for drainage of spilt liquid &c.
Patent GB-1034502-A (GB)
Title: Implosion-protection means for television sets
IPC: H01J29/87
Filed: 1963-05-13
Abstract: 1,034,502. Television. H. F. SCHRODER. May 13, 1963 [July 19, 1962], No. 18822/63. Heading H4F. A safety screen for a television picture tube consists of a thin, e.g. 1 mm., sheet of synthetic plastic which is positioned between the masking or front frame of the set and the cathode-ray tube so that, when the tube is inserted during assembly, the sheet is caused by being pressed against the tube to assume a shape in which it makes contact with the whole of the front face of the tube. The sheet may be attached to the masking or front frame, or carried by a separate steel wire frame. Both surfaces of the sheet may be finely patterned to reduce reflection.
Patent GB-384689-A (GB)
Title: Improvements in and relating to carburetters for internal combustion engines
IPC: F02M1/16
Filed: 1931-06-30
Abstract: 384,689. Spray carburetters. MEMINI, G., 16, Via Poliziano, Milan, Italy. June 30, 1931, No. 18886. Convention date, June 30, 1930. Addition to 383,974. [Class 7 (iii).] In the parent Specification, a well 8 fed from the float chamber 3 through a calibrated orifice 7 is in communication with the atmosphere through ducts 20, 21 and, through ducts 14, 10, 15, with the induction passage at a point where the suction is less than that at the outlet of the main nozzle 12. According to the invention, the orifice 7 is prolonged by a tube 24 which extends at its upper end 25 into a, cowl 22 having an air inlet aperture 23. At its lower end, the tube communicates with the well 8 through large apertures 26. With the construction of the parent Specification, the flow of fuel tended to lag at starting and accelerating, but with the present construction air is drawn down the tube 24 to force fuel into the well 8. As the throttle is opened, an increasing resistance to the flow of air through the tube is developed, with the result that the air mainly flows between the cowl and tube into the upper part of the well, and acts in a manner similar to the air entering conduit 20.
Patent GB-1086849-A (GB)
Title: Improvements in hand-applied, portable tools driven by an electric motor
IPC: H02K7/08
Filed: 1966-04-29
Abstract: 1,086,849. Portable power tools. ROBERT BOSCH G.m.b.H. April 29, 1966 [April 30, 1965], No. 18903/66. Headings B3C and B3N. A portable drilling, tapping, or valve seat grinding tool, comprises a tool spindle 1, Fig. 1, driven by an electric motor 3, whose shaft 2 is disposed at an angle of 60 to 90 degrees relative to spindle 1, and substantially parallel to a handle 14. Shaft 2 mounts an insulated sleeve 4, which carries a laminated rotor 5, and armature winding 6, and the shaft is supported by a bearing 7, overlapped by a ventilating blower 8 at one end, and at the other end of the shaft, sleeve 4 carries a commutator 9 cemented thereto, and a bush 10 is pressed into the shaft 2, and runs on a fixed pin 11, an oilimpregnated felt 13 being provided for lubricating. In a modification, bearing pin 21, Fig. 2, abuts a ball 22. In a further modification the bearing bush is replaced by a needle bearing.
Patent GB-1008485-A (GB)
Title: Drive mechanism for an electric contact make and break device
IPC: H01H3/26
Filed: 1963-11-01
Abstract: 1,008,485. Electromagnetic switches. A. J. L. CROMPTON Nov. 1, 1963, No. 18921/65. Divided out of 1,008,484. Heading H2B. A rotary switch driving mechanism including a free-wheel device as described in Specification 881,803 has means which move the driven shaft axially after rotation is complete and contacts are operated during this axial movement. The axial movement may be effected by a weighted lever (not shown) arranged so that when its weighted end is moved upward by an electromagnet its other end disengages a thrust pad 34 allowing the shaft 29 to move downward and operate contacts 36 in alignment with a pin 42. Specification 969,303 also is referred to.