baber/WOPTO huggingface dataset:
Patent GB-555381-A (GB)
Title: Improved means for teaching rifle shooting
IPC: F41G3/26
Filed: 1943-02-05
Abstract: 555,381. Teaching rifle shooting. ROBERTS, H. J. Feb. 5, 1943, No. 12213/41. l Class 119] A dummy rifle has electrical means associated therewith and with the target whereby (a) indication is given in advance of pressing the trigger that the aim is correct, and (b) indication is given on pressing the trigger if a central "hit" is scored. A delay-action relay device may be incorporated between the circuits of (a) and (b) to ensure steady holding between aim verification and trigger actuation. A flexible conductor 1 is extended under tension between a metal rod 7, centrally mounted in an insulator 8 in the barrel 4 near the breech end thereof, and a spring or weightloaded electrically-conductive drum 5 carried by the target holder 6. A metal tube 2 is also mounted in insulating bushes in the barrel and within the tube a smaller metal tube 14 is rockably mounted upon a ball 15 of insulating material. The wire 1 passes through the tube 14 and is connected thereto at the end 17. The inner end of the tube 14 is located within a contact ring 16 in the tube 2. The rod 7 slidably supports a spring-pressed sleeve 10, the rear end of which is fitted with a hard steel disc 11 in an insulation sleeve 12a. When the trigger 27 is pressed, the striker 30 makes contact with the disc 11. The circuits are shown to include a battery 18, lampindicator 20 on the target-support 6, and bell indicator 28 associated with a delay-action relay 26. When the rifle is aimed correctly, the inner end of the tube 14 is held by the wire 1 central in the contact ring 16, no current flows through the wire, and the lamp circuit 19 is made through the relay 22. If contact is made at 16 through lack of alignment of the barrel and wire 1, current flows along the tube 14 and lead 21, and the lamp circuit is broken by energization of the relay 22. If the aim is correct and the trigger is pressed, a circuit is completed through the wire 1, contacts 11, 30, rifle barrel 4, relays 26, 29, and bell indicator 28.
Patent GB-1478228-A (GB)
Title: Hydrostatic drives for imparting alternating movements to  members
IPC: F16H43/00
Filed: 1975-03-25
Abstract: 1478228 Hydraulic control circuits WERKZEUMASCHINENKOMBINAT 7 OCTOBER BERLIN 25 March 1975 [26 March 1974] 12352/75 Addition to 1220233 Heading F1P The hydrostatic drive for impacting alternating movements to a member claimed in Specification 1220233 is characterized in that an additional constant control signal is applied to the input of a polarity changer 12, the output of which is connected to the input of a reference member 8 so that its output signal is superimposed upon the output of the function generator 7, and a control input of the polarity changer is connected to the output of a memory 11, two inputs of which are respectively connected to an auxiliary changeover contact 9, 10, associated with each switch  element 5, 6. This arrangement results in a more precise control of the points at which the member reverses its movement.
Patent GB-213454-A (GB)
Title: Improvements in or relating to the manufacture of compounded rubber
IPC: C08K3/22
Filed: 1923-05-08
Abstract: Zinc oxide for use in the compounding of rubber is characterised by one or more of the following properties viz. (1) an average particle size not exceeding about 0.15 microns, (2) the capacity of substantially accelerating the cure of compounded rubber, (3) the capacity of imparting to compounded rubber an increased resistance to abrasion of at least 50 per cent as compared with ordinary zinc oxide.  It can be produced by oxidizing a stream of metallic zinc vapour by a blast of relatively cool air under such conditions that the particles of oxide are cooled below a temperature of 350 DEG  C. substantially instantaneously with their formation.  It is characterized by a very low acidity, usually 0.02-0.04 per cent of SO3. Specification 219,423 is referred to.
Patent GB-295063-A (GB)
Title: Improvements in speedometer
IPC: G01P3/495
Filed: 1927-05-09
Abstract: 295,063. Marks, E. C. R., (A. C. Spark Plug Co.). May 9, 1927. Magnetic speed indicators; transmission mechanism; registering distance upon counters. -In a speedometer of the eddy-current type, the indicating drum is arranged coaxially with a fixed annular magnet, and between the magnet and the rotor. The indicating assembly is axially adjustable with reference to the magnetic field. Improvements relating to the internal transmission mechanism and the general transmission mechanism and the general arrangement of parts are described. A C-shaped permanent magnet 35 is clamped by screws 37 in a groove in a platform 4 projecting from a main frame 1 made of aluminium. Within the magnet is arranged a spider-shaped rotor 21 having upturned lugs 22 on each arm, and the cylindrical flange 57 of the drag element 55 is disposed between the magnet and the rotor. The drag element, which is preferably formed of an alloy of aluminium and magnesium, is mounted on a spindle 54, movement of which is restrained by an adjustable spring 60. The spindle 54 is supported in jewel bearings in a cup 50 and a cap 52 both of which are carried by a frame 38. The frame 38 is secured to the frame 1 by screws 43, 45 so that the position of the indicating assembly may be readily adjusted axially with reference to the magnetic field. The speed indicators marked on the flange 57 of the drag element are visible through the gap in the C-shaped magnet 35. The rotor 21 is mounted on a vertical shaft 20 which is connected to an inclined vehicle-driven shaft 8 by a flexible shaft 25. Lubricating pads 23. 80, 81 and a packing washer 82 are provided. The mileage counters 70 are driven by a worm 15 on the shaft 8 through a cross shaft 72. They are mounted in a frame 73 which is secured to the main frame 4 by screws 76. The outer casing 3 is preferably formed of steel.
Patent GB-130732-A (GB)
Title: Improvements relating to Internal Combustion Engines.
Inventor: FREER PHELPS MAC KEAN
IPC: F02B75/18
Filed: 1918-07-31
Abstract: 130,732. Freer, P. M. July 31. 1918. Channels in crank-shafts and rotary engines.- Crank pins are lubricated by oil supplied preferably to both ends of a hollow crank shaft having passages arranged as shown in Fig. 15. The ends of the hollow pins are closed by plates 36<fx>. Other arrangements of passages are described in the Specification. Lubricant is supplied to the rubbing surfaces between a stator and a rotating casing carrying the cylinders of an internal-combustion engine through pipes which register at intervals with a passage in a stationary spring- pressed plunger as shown in Fig. 13.
Patent GB-1129828-A (GB)
Title: Railway vehicle coupler
IPC: B61G3/18
Filed: 1966-03-22
Abstract: 1,129,828. Railway vehicle automatic couplers. MIDLAND-ROSS CORP. 22 March, 1966 [1 April, 1965], No. 12539/66. Heading B7T. A railway vehicle coupler generally as de. scribed in U.K. Specification 942,514 is modified by enlarging slot 42 in the lock 8 with a downwardly extending recess 41 which receives the shaft of rotor 9 when the coupling is inverted. Shoulders 36 and 33 formed on the top of the lock and the top wall 27 of the head 6 also engage during inversion. In the coupled position the fin 45, which is free of aperture 46, and the tooth 18, which has a vertical face 25 of length greater than the clearance 28 between the lock and wall 27, permit the lock to move upward. A rib 89 integral with the rear wall of the head prevents rearward movement of the rotor 9. The pad 73 of the lock set piece 10 is formed with a lug (72), Fig. 12 (not shown), which engages the lock in its rearward position to prevent sideways movement of the pad.
Patent GB-290661-A (GB)
Title: Method and apparatus for sealing leaks
IPC: F16J15/10
Filed: 1928-04-30
Abstract: 290,661. Heard, E. F. May 19, 1927, [Convention date]. Joint-making packing. -A leak at the threaded joint 17 between a pipe 11 and a flange 13, Figs. 1 and 6, is sealed by a fibrous packing ring 21 and. a lead &c. ring 22 which are caulked into a confining ring 18 adapted to surround the joint. The confining ring is composed of thin metal strip which is preferably provided adjacent one end with a number of apertures 19 so arranged that when the strip is wound in place an aperture in the outer coil will register with one in the next coil to permit the insertion of a retaining pin &c. 20. Instead of using packing as shown, a sealing ring formed throughout of the same material, such as a split lead &c. ring, may be employed; alternatively, a composite sealing ring, Figs. 8 and 9, comprising a lead ring provided with a recess 55 to receive the fibrous packing-ring, is used.
Patent GB-197934-A (GB)
Title: Means for injecting, pulverizing and vaporizing fuel in internal combustion engines
IPC: F02M67/02
Filed: 1923-05-11
Abstract: 197,934. Rochefort, F. May 17, 1922, [Convention date]. Regulating. - The Specification as open to inspection under Sect. 91 (3) (a) describes a method of controlling the amount of fuel injected into the cylinder without varying the pump delivery. A chamber h, Fig. 6 (Cancelled), is provided in the upper part of the fuel injector, to which surplus fuel delivered by the pump may leak from the chamber e<4> past the stem of the spraying-valve f. This leakage is led past the non- turn valve h<6> to a collecting-pipe common to all the cylinders and provided with an adjustable spring-loaded discharge valve, by means of which the pressure in the collecting-pipe, and hence the leakage between the chambers e<4>, h, may be regulated. This subject-matter does not appear in the Specification as accepted.
Patent GB-136198-A (GB)
Title: Improved Electric Liquid Heating Apparatus.
Inventor: SORDI INNOCENTE
IPC: F24H1/10
Filed: 1918-08-03
Abstract: 136,198. Sordi, I. Aug. 3, 1918. Electric radiators.-A radiating-element consists of a resistance enclosed between two tubes within an outer tubular casing, water flowing through the central tube and along the annular passage between the two outer-tubes; a number of such elements may have their water passages connected in series. As shown, the resistance 5 is wound between insulating-packings 4 and the closed tubes 2, 3, and the outer casing 1 of each element is connected to the inner tube 3 of the next, screw couplings s, t being provided at the end of the series.
Patent GB-1029068-A (GB)
Title: Method and apparatus for applying narrow strips in position on webs of wrapping material
IPC: B31B1/90
Filed: 1963-03-30
Abstract: 1,029,068. Making wrappers; laminates and laminating. H. H. FOCKE, and L. PFUHL, [trading as FOCKE & PFUHL]. March 30, 1963, No. 12727/63. Headings B5D and B5N. A method of applying narrow strips in position on webs of wrapping material so that wrappers with tear strips are produced, is characterized in that two parallel wrapping webs and two tear strips are cut simultaneously from a single web of material. In the embodiment shown a web 11, Fig. 1, of wrapping material, e.g. " Cellophane " (Registered Trade Mark) or polymethacrylicester, from a storage roller 10 is fed to cutters 16, 16a, 16b acting with a roller 15 to sever it longitudinally into two wrapping webs 12, 12<SP>1</SP>, Fig. 4, and two tear strips 13, 13<SP>1</SP>, Fig. 2. The tear strips pass via a device 20, where colouring or adhesive is applied to them, to rollers 19 which are adjusted to space the strips correctly with respect to the webs 12, 12<SP>1</SP> before they are applied thereto between continuously driven rollers 21 and 24, Fig. 1. The webs and strips then pass to a drying or sealing device 25 and thence via a compensating roller 27 to intermittently driven rollers 28, 30, where U-shaped incisions 31, Fig. 7, are formed by a cutting device 29. Recessed cutters 33 acting in timed relation with intermittently rotated rollers 34, 35 cut the web into the individual wrappers of Fig. 7.
Patent GB-441844-A (GB)
Title: Improvements in chucks
IPC: B23B31/12
Filed: 1934-04-27
Abstract: 441,844. Chucks. STONER, A. M., 297, Mountain Road, West Hartford, Connecticut, U.S.A. April 27, 1934, No. 12749. [Class 83 (iii)] In a bevel-closing chuck a carrier 14, Fig. 1, for the jaws 18 is located in a recess 13 in the body 10 and is provided with radial slots 16 for the jaw-opening springs 17 which are screwed into tapped recesses in the jaws and are secured to the carrier by bent ends 20 so as to constrain the jaws to move radially outwards. The jaws are closed by a bevelled cap 21 screwing on the exterior of the body 10 and provided with gear teeth 25 engaged by a removable bevel-gear wrench 24. A pilot pin 27 on the wrench is inserted in an aperture in one of two blocks 23, slidably keyed to the body at 22 and constrained to move axially with the cap by means of tongues 26 thereon engaging an inturned flange on the cap. In a modified construction the spiral springs are replaced by U-shaped springs 34, Fig. 4, inserted in the carrier 37 and jaws 38, and the apertures 28 for the wrench pilot are provided in the cap 21. The wrench meshes with teeth 28<1> formed on a ring 29 splined to the body 10 by keys 30 which embrace the ring and an annular groove in the cap at 31, 32 so as to cause the ring to move axially with the cap. In each example a ball bearing 15 is inserted between the carrier and the body to allow a slight relative rotation therebetween when the friction of the cap on the jaws tends to rotate them during closing.
Patent GB-676046-A (GB)
Title: Electric motor
IPC: H02K17/16
Filed: 1950-05-22
Abstract: 676,046. Electric motors. WELTER, O. May 22, 1950 [May 24, 1949], No. 12781/50. Class 35. In a disc type induction or synchronous motor the cross-section of the stator pole-pieces is uniform throughout their axial length, and their faces adjacent the rotor are covered by sheet iron, as shown, the sheet iron 5 extends over and bridges all the stator polepieces, but small slots or grooves to reduce its section may be provided in the inter-polar spaces. The pole-pieces 3 may be of strip or powdered iron. A magnetic shunt 21 with four radial extensions spaced the same as the polepieces is angularly movable against spring pressure. The stator polepieces may be shaded or a condenser used. The rotor may be an iron disc coated with copper or be of hard steel for synchronous running, and may be disposed between two stators, or alternatively there may be a disc rotor on each side of one stator.
Patent GB-1139917-A (GB)
Title: Method of producing water-soluble polyacrylamide
Inventor: ABKIN ABRAM DAVYDOVICH
IPC: C08F2/46
Filed: 1966-03-23
Abstract: 1,139,917. Flocculating with polyacrylamide. NAUCHNO - ISSLEDOVATELSKY FIZIKO - KHIMICHESKY INSTITUT IM L. J. KARPOVA. 23 March, 1966, No. 12815/66. Heading C1C. [Also in Division C3] Water-soluble polyacrylamide with high molecular weights used as a flocculant, said polyacrylamide is prepared by polymerizing acrylamide by nuclear radiation or free radical initiator in an aqueous solution containing at least 20% by weight of acrylamide in the presence of an alkali metal hydroxide, an amino acid or salt thereof or an ammonium salt other than a free radical initiator or a mixture of these.
Patent GB-423773-A (GB)
Title: Improvements in or relating to radio and like modulated carrier wave receiving apparatus
IPC: H03D5/00
Filed: 1934-04-27
Abstract: 423,773. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., Electra House, Victoria Embankment, London.-(Assignees of George, R. W. ; Riverhead, Long Island, New York, U.S.A.) April 27, 1934, No. 12829. Convention date, April 27, 1933. [Class 40 (v)] In an ultra-high-frequency receiver the demodulator comprises a pair of valves whose input electrodes are energized in phase opposition and also co-phasally by energy 90 phase-shifted with respect to the component fed in phase opposition. The path energizing the valves in phase opposition comprises a high-frequency transformer with tuned primary and secondary windings with coupling and damping to give a flattened double peak response with a width equal to that of the band of frequencies to be demodulated. Fig. 1 shows an oscillating detector O of the Barkhausen-Kurtz type as described in Specification 394,267, and an intermediate frequency amplifier 1 .. 5 coupled by transformers with a flattened double hump characteristic produced by close coupling and damping shunt resistances. The tuning capacity for the primary of the transformer T1 is constituted by the high frequency byepass condenser 28 of the oscillating-detector O. The output is applied to the grids of the valves 6, 10 which are followed by push-pull detector 8, 9. The signal is fed in phase to the grids of the detectors through the valve 6 and is fed with a phase displacement of 90 relatively to the co-phasal feed differentially to the grids of the detectors through the valves 10, 7, the phase shifting line L1, L2, Fig. 1a, and the phase changing transformer PC. Metering, decoupling of the supply circuits and screening of the receiver elements are provided as shown. Frequency modulated signals are received by the push-pull transformer FT and amplitude modulated signals by the parallel transformer AT. The meters 21, 31 allow the valves to be statically balanced accurately and in operation facilitate tuning since incorrect phasing of the signals on the grids of the valves 8, 9 produces unbalance in the plate currents. The Specification gives vector diagrams and detector current characteristic curves. Secrecy may be obtained by transmitting one element of a signal as a frequency modulation and simultaneously another element of the signal as a keyed tone to give amplitude modulation, Fig. 8, (not shown). In a modification the phase displaced signals are fed to two separate grids in each of the detector valves, Fig. 1b, (not shown). Instead of applying the in-phase signals to the grids of the detector valves they may be applied to the cathodes either with direct coupling, Fig. 3, (not shown) or with capacitive coupling, Fig. 2, (not shown). The oscillating detector O may be replaced by any known form of first detector in a superheterodyne circuit and a large degree of intermediate frequency may not be needed, the first detector being coupled through phase shifting circuits and coupling valves to the demodulating valves.
Patent GB-474779-A (GB)
Title: Improvements in and relating to lamps for projecting light beams
IPC: F21S8/00
Filed: 1936-05-07
Abstract: 474,779. Searchlight, signalling, &c. light projectors. BRITISH THOMSONHOUSTON CO., Ltd., and FAIRBROTHER, J. A. V. May 7, 1936, No. 12940. [Classes 75 (ii) and 75 (iv)] A searchlight, signalling, or like light projector comprises a super high pressure electric discharge lamp mounted at the focus of a reflector, all or part of which is enclosed by a transparent member, and the enclosed portion filled with a circulating cooling fluid which is introduced through the apex portion of the reflector. The reflector may be made of metal such as polished stainless steel or a base metal coated with silver or cadmium, of glass with a reflecting coating on its front or rear surface, or of a synthetic resin with a polished or metal coated inner surface. The cooling fluid may be water, mixed or not with glycerine or like substance of high refractive index, or it may be a liquid which absorbs ultra-violet rays. Fig. 1 shows a super high pressure mercury vapour lamp 9 at the focus of a paraboloidal reflector 1 which is closed at the front by a flat glass plate 3, cooling fluid entering axially at 14 and escaping through a top outflow pipe 15. Direct rays are intercepted by a spherical recuperating reflector 30. The plate 3 may be replaced by a planoconcave or convex lens. When a part only of the reflector is enclosed by the transparent member, the latter is disposed at right-angles to the axis of the reflector and at a sufficient distance to prevent internal reflection at the inner surface of the transparent member. Fig. 5 shows an ellipsoidal reflector 34 having foci F<1>, F<2>, a spherical recuperating reflector 31, and a spherical closure plate 32 having its centre at the focus F<2>. The rays may be brought to a focus F<3> by means of a planoconcave condensing lens 33, or into a parallel beam by means of a lens such as 33 having its focus at F<2>. Transparent parts of the lamp, instead of being made of glass, may be made of the material known as Glyptal. U.S.A. Specification 1,973,132 is referred to.
Patent GB-1455177-A (GB)
Title: Motor speed control apparatus
IPC: H02P7/292
Filed: 1974-03-22
Abstract: 1455177 Automatic control of speed INTERNATIONAL EQUIPMENT CO 22 March 1974 [6 April 1973] 12956/74 Heading G3R To limit the torque output of an electric motor fed from an A.C. supply, the conduction angle of the motor supply in each half cycle is limited according to a comparison between signals dependent upon the motor speed and upon the voltage actually applied to the motor during the conduction angle. In the embodiment shown in Fig. 1, a series or separately excited D.C. motor 10 is fed through thyristors whose conduction angles are controlled by comparator 20 according to any error between a speed reference from 16 and an actual motor speed signal. The latter is obtained from an optical tachometer including a motor driven apertured disc 26 co-operating with lamp 30 and optical sensor 28. This sensor produces pulses at a frequency dependent upon the motor speed, each pulse triggering a monostable multivibrator 32 whose output is integrated at 34 to produce a D.C. signal proportional to the motor speed that is fed to comparator 20. A reference load 52 i.e. a motor simulating resistor, is fed from the motor supply through a triac fired in synchronism with, and for the same conduction angle as, the thyristors feeding the motor. The voltage across the reference load 52 is fed through a rectifier, voltage divider and biasing network 60 to differential amplifier 48 where it is compared with the motor speed dependent signal, fed to amplifier 48 from 34 through a delay and integrating circuit 46. This circuit introduces a delay to the motor speed signal for increasing motor speed (thereby limiting motor acceleration) but has a shorter delay for decreasing motor speed. The output of delay 46 is limited by circuit 50. In each half cycle, the supply to the motor 10 and to the reference load 52 is inhibited for a period, set by the astable period of multivibrator 42 in dependence upon the output of comparator 48. Thus the torque output of the motor 10, which drives for example a centrifuge, is limited according to the motor speed, as shown in Fig. 4. Details of the system are given in Fig. 3 (not shown).
Patent GB-1035217-A (GB)
Title: Fluorinated aromatic nitriles
Inventor: BELF LEON JERZY
IPC: C07C255/49
Filed: 1962-04-04
Abstract: Fluorinated aromatic nitriles are prepared by heating in dimethyl formamide or in N-methyl pyrrolidone an aromatic fluorocarbon halide containing at least one nuclear chlorine, bromine or iodine atom, especially monobromo or monoiodopentafluoro benzene, or 1,2-, 1,3-, or 1,4-dibromo or diiodotetrafluorobenzene, especially at a temperature between 140 DEG  and 180 DEG  C. with cuprous cyanide. The invention also comprises 1,2-, 1,3-, and 1,4-dicyanotetrafluorobenzenes. The examples describe conversion of bromopentafluorobenzene to the pentafluorobenzonitrile, and the alternative use as a starting material of iodopentafluoro benzene; the nitrile thus obtained is converted to pentafluorobenzamide by hydrolysis with concentrated sulphuric acid, or to pentafluorobenzoic acid by using more vigorous hydrolysis conditions.  The dinitriles, namely the 1,2-; 1,3-and 1,4 are prepared from the corresponding dibromotetrafluorobenzenes and the hydrolysis of the 1,2-dinitrile to give tetrafluorophthalic acid is also included in the examples. Reference has been directed by the Comptroller to Specification 980,523.