baber/WOPTO huggingface dataset:
Patent GB-706855-A (GB)
Title: Improvements in or relating to safety devices for machines
IPC: F16P3/14
Filed: 1951-05-01
Abstract: 706,855. Photo-electric machine guards. GARDETTE, G. May 1, 1951 [May 2, 1950], No. 10250/51. Class 40 (3). [Also in Group XXIV] A machine operator is protected from moving parts by a photo-electric guard which operates to switch an electromagnet to disengage a clutch on the machine. As shown a beam of light passes from a source 75 across the front of a power press to a photo-cell and an associated amplifying valve in a housing 70. Interruption of the beam causes an A.C. fed photo-electric cell, Fig. 5 (not shown), to operate an anode relay of a triode amplifying valve to close a switch in the feed circuit of an electromagnet operating the clutch. Clutch mechanism and control.-The machine drive is applied to a pulley 16 which when the electromagnet referred to above is not energized is clutched to the press driving shaft 9. This shaft is provided with a band brake so that it stops as soon as the drive is removed. The clutch construction is shown in Figs. 3, 6 and 7 The pulley 16 is carried on roller bearings 19 20 mounted on bushes 22, 26 keyed to the shaf 9 and the drive is transmitted to the shaf through a cylindrical key 28 which however is cut away along a central portion 30, so that its section over this portion is semi cylindrical, Fig. 9. Thus when the semicircular part lies in the recess in the shaft 9 the pulley may turn without transmitting a drive. Rotation of the key however causes it to enter one of recesses 34, Fig. 9, in the pulley so that the pulley and shaft are clutched together. A tail 35 on the key engages a lever 37 which may be operated from a treadle 39 to release the tail. Surrounding bush 26 is a ring 41 provided with teeth and housing a circular spring 43 which tends to rotate the ring relatively to the brush 26. When treadle 39 is operated releasing the tail 35 of key 28, ring 41 rotates around bush 26 carrying with it tail 35, Fig. 7, so that the key rotates to clutch the shaft 9 and pulley 16 together. Interruption of the light beam by a hand for example, Fig. 3, deenergizes electromagnet 56 so that a pawl 50 engages toothed ring 41 compressing spring 43 so that the continued rotation of bush 26 rotates the key to disengage the pulley from the shaft. A number of such cells may have contacts in series with solenoid 56.
Patent GB-296959-A (GB)
Title: Improvements in sifting machines for treating potters' slip, powdered substances andthe like
IPC: B01D35/28
Filed: 1928-04-05
Abstract: 296,959. Ratcliffe, J. W., and Cotton, Ltd., E. April 5, 1928. Reciprocating sieves.-Apparatus for sifting potters' slip, powdered substances, &c. comprises one or more inclined frames f, g. Fig. 1, each hinged at a point f<2>, g<2> near its lower end to the stationary framework a and suspended at its upper end by a connecting rod k from a cam, eccentric, or crank actuating device, each frame being provided with a lawn or mesh r secured at its edges only so that its surface is free to rise and fall with the motion of the frames and strike rods or bars s, wires or other stays fixed to the frames. In the construction shown in Fig. 1, the lawns r are mounted in separate frames connected by links j. Alternatively, the lawns may be mounted in a single rocking frame.
Patent GB-182891-A (GB)
Title: Improvements in or relating to the joints of railway, tramway and like rails
IPC: E01B11/44
Filed: 1921-04-07
Abstract: 182,891. Butler, S. April 7, 1921. Rail joints, welded.- Fish-plates for welded joints have one or more slots or perforations to receive welding-material. The slots may be formed in the vertical walls of the fish-plates, as for example i<1>, or in the lower flanges or both, and the fish-plates may have upper and lower flanges b<2>, b<1>, forming troughs or corners h, e to receive welding-material. The upper flanges may have a bead or ledge b<4> or be formed with a groove to accentuate the trough. The Provisional Specification states also that the slots are alternative to the flanges, beads, or grooves in the fish-plates.
Patent GB-745621-A (GB)
Title: Improvements in or relating to fuel for gas turbine engines
IPC: C10L1/10
Filed: 1951-05-03
Abstract: A fuel for gas turbine engines comprises a vanadium-containing petroleum residue fraction and a zinc naphthenate, i.e. a zinc salt of a naphthene carboxylic acid.  The petroleum residue fraction may be a furnace oil and the amount of zinc naphthenate added may be such that the fuel contains up to 3 per cent of zinc. The presence of the zinc naphthenate prevents or minimizes the build-up of inorganic deposits or formation of scale on the turbine blades and other parts of the engine and thereby prevents or minimizes corrosion.  According to the Provisional Specification, other oil-soluble or oil-insoluble compounds of alkali metals, alkaline earth metals, magnesium, aluminium, zinc, copper or lead may be employed instead of zinc naphthenate. Preferred oil-soluble compounds are metallic-organic compounds and metal salts of fatty and naphthenic acids, while preferred oil-insoluble compounds are metal oxides and carbonates. Thus metal salts of acids (such as ethylhexoic acid and isononanoic acid) obtained by oxidation of higher aldehydes produced by the oxo reaction, using as oxo feedstock petroleum olefins or olefin polymers such as diisobutylene, or metal salts of fatty acids obtained by the partial oxidation of paraffin hydrocarbons, particularly such as occur in certain petroleum or Fischer-Tropsch fractions, may be employed.  Specific metal compounds mentioned are calcium oxide, carbonate, benzoate, naphthenate and stearate and the corresponding compounds derived from magnesium and zinc.  Suitable metal-organic compounds, other than salts, are dimethyl zinc, diethyl zinc, triphenyl aluminium and tetraethyl lead.
Patent GB-198165-A (GB)
Title: Sand cutting and piling machines
IPC: B22C5/04
Filed: 1922-04-11
Abstract: 198,165. Marks, E. C. R., (American Foundry Equipment Co.). April 11, 1922. Treating mould and core materials.-A machine for cutting and piling sand comprises a frame F pivoted to a chassis at 31 and carrying at opposite ends the cutter 21 and its driving-motor 23. The frame is turned about its pivot to bring the cutter to the desired height by a hand-wheel 29 on a screwed rod 28 which passes through a threaded sleeve 32 pivoted on the chassis and is connected to an arm on the shaft 31 by a one-way slip connection, the frame being free to yield if the cutter meets an obstruction. The cutter is driven in opposite directions for cutting and for piling. The machine may be propelled by a motor 44 on the chassis, through worm-gear 50, 51, differential gearing on the shaft 34 and spur-gearing 39, 40. The gears 40 consist of rings secured to the driving-wheels by bolts 42 encircling the spokes. The motors 23 and 44 are controlled from switchboxes 26 and 55.
Patent GB-1126288-A (GB)
Title: Fluid logic control circuit useful with sewing machines
IPC: F15C1/00
Filed: 1967-03-06
Abstract: 1,126,288. Pure fluid amplifiers. SINGER CO. March 6, 1967 [March 8, 1966] No.10408/67. Heading G3H. [Also in Division D1] A fluidic circuit for monitoring the operation of a sewing machine has a fluid source 26 feeding a receiver 30 through the spokes of a pulley 16 carrying the needle thread 18, the arrangement being such that interconnected fluid amplifiers 34, 46, 56 in circuit with a variable delay element 52 feed an integrating detector 70 with fluid at a pressure determined by the frequency of the pulse train Figs 2a-c (not shown) developed in receiver 30 in response to the speed of rotation of pulley 16. With the pulley rotating at a desired speed, predetermined by the setting of element 52, the pressure applied to detecter 70 is below the operating threshold necessary to operate an alarm (not shown), but in the event of the pressure in leg 58 rising above this threshold value the alarm is activated. Leg 58 is subjected to this increased pressure. When the pulse times are too long (Fig.2b), or too short (Fig.2c), or when receiver 30 is supplied with either no pressure or a continuous pressure due to thread breakage stopping the pulley.
Patent GB-198167-A (GB)
Title: Braking device for mechanically propelled vehicles
IPC: B60T1/14
Filed: 1922-04-12
Abstract: 198,167. Wells, J. April 12, 1922. Actuated by running axle; skid.-In a vehicle brake of the kind comprising a shoe adapted to be forced down against the track, two pairs of upwardly-diverging links k, k<1>, k<2>, k<3> are connected to the shoe l at n<4>, n<5> and the links k<2>, k<3> are pivoted to the chassis at n<1>, n<3>. The upper ends of the links k, k<1> are connected to a bar i which can be slid in guides j, j<1> to force the shoe downwardly against the track by means of screw- and-nut mechanism e, f, lever g and link h. The screwed spindle e may be rotated by the motive power of the vehicle by a friction wheel d mounted to swing about the spindle e into engagement with the flywheel or other rotating part b of the power unit and geared to the spindle e by gear wheels c, c<1>.
Patent GB-1248086-A (GB)
Title: Improvements in electrical converters
Inventor: BOKSJO CARL INGVAR
IPC: H02H7/127
Filed: 1969-02-27
Abstract: 1,248,086. Converters; protection. ALLMANNA SVENSKA ELEKTRISKA AB. 27 Feb., 1969 [28 Feb., 1968], No. 10460/69. Headings H2F and H2K. In the event of a fault in a converter comprising SCR's 1-6 (Fig. 1) and reactors 11-16, e.g. a flash over in rectifier 1, a device 10 responsive to excess currents shorts the A.C. feed lines (or alternatively the D.C. feed lines or both A.C. and D.C. lines). The device 10 may take upwards of half a cycle to operate during which time the fault current can increase and feed energy to the reactors 11, 13 which energy would discharge when the shorting device operates and pass current in the circuit including SCR's 1 and 3, L11 L13 and device 10, which current might be sufficient to damage the rectifiers. To overcome this the reactors are arranged to saturate at a predetermined current which is a fraction of the short-circuit current, whereby the energy stored therein is limited. In practice each rectifier comprises a large number of thyristors in series and parallel and distributed anode reactors. Alternatively, the saturable reactors may be those used for current and voltage dividing instead of anode reactors as shown. In addition, trigger pulses from a pulse generator 100 may be blocked under fault conditions.
Patent GB-1242345-A (GB)
Title: Improvements in or relating to intruder alarm systems
IPC: G08B21/02
Filed: 1969-02-27
Abstract: 1,242,345. Alarm systems. AMERICAN DISTRICT TELEGRAPH CO. 27 Feb., 1969 [5 April, 1968], No. 10505/69. Headings G4H and G4N. [Also in Division H3] In a burglar alarm system a manual switch H1, H2 (shown in the inoperative position) in protected premises 11 actuates a astable multivibrator Q2, Q3 controlling an electronic switch Q1 to send pulses along a line 12 to a central station 10 comprising a battery 15 and alarm means 13. An open circuit in the path ABCD is prevented from causing a false alarm by diodes D6, D7, D8 which prevent operation of the multivibrator. A tone generator 20 and a tone responsive device 16 indicate earths or open circuits in the circuitry. A Zener diode D10 protects the circuitry from excess voltages. An alarm bell or lamp may be connected between 19 and 22 at premises 11. Automatic burglar alarm devices may be provided at 18, which may comprise door and window contacts, foil, photo-electric beams, sound-responsive systems, or capacitive responsive systems.
Patent GB-550595-A (GB)
Title: Dies for pressure casting
IPC: B22D15/02
Filed: 1941-08-19
Abstract: 550,595. Casting-machines. MADISON-KIPP CORPORATION. Aug. 19, 1941, No. 10555. Convention date, April 9. [Class 83 (i)] Cores.-A die for casting aluminium alloy pistons or other hollow articles comprises relatively movable mould parts 12, 22, Fig. 2, and one or more detachable core parts 59, 61 slidable on a core part 57, pivoted at 48<SP>1</SP> to a slide 42 which is moved automatically to position the core during the closing of the mould and to withdraw the core part 57 during the opening, the parts 59, 61 remaining in the casting. In the open position the central tapered core part 57 and its holder 48 can be swung by a handle 56 to make it accessible, as shown in Fig. 4, for the mounting of the parts 59, 61. The complete core is then swung into position' between the mould parts, a projection 51 on the slide 42 engaging a recess 52, and the part 22 is moved to the left by a hydraulic ram 15<SP>1</SP>. During this movement a cam 27<SP>1</SP> of an interchangeable fixed bar 27 engages a crank 45 of a gear 44 and advances the core until a pin 55 engages notches 53 in the holder 48 and slide 42, an inclined bar 36 engages a hole 361 in a slide 35 and advances a die part 33 between die parts 31, 32, and with them and the cores forms the mould cavity 40 and finally the fixed mould part 12 engages rods 21<SP>1</SP>, 191 to withdraw ejector rods 24 and a plate 19 carrying a rack 25, Fig. 2, which acts through a gear 41 and rack 39 to advance a core 38 into the cavity 30. Metal is then injected as described in Specification 481,829 upwardly into a passage 581 and annular gate 63 into the cavity 40. During the opening of the mould the core parts 59, 60 are stripped from but left inside the casting, the die 33 and core 37 are withdrawn, and finally the core 38 is withdrawn and the ejectors 24 operated, by the plates 19, 21 engaging an adjustable stop 17.
Patent GB-511991-A (GB)
Title: Improvements relating to kiers
IPC: D06F39/08
Filed: 1938-04-07
Abstract: 511,991. Kiers. STRAATMAN, J. F.,and NORTON & CO., Ltd., Sir J. F. April 7, 1938, No. 10632. [Class 15 (i)] A header or tank b is provided above a kier a for the wet treatment of textile materials to prevent the formation of steam in the kier, the pump c, by which the liquor is circulated through the kier and the heater d by means of which the liquor is heated, being located in a circuit as shown with the pump between the header and the kier. The tank b is open to atmosphere if the kier is to be under atmospheric pressure. A bye-pass f across the pump c may be provided to control the rate of delivery of liquor from the pump to the kier. Hot liquor is delivered' by the pump c to the top of the kier through the pipe e.
Patent GB-574633-A (GB)
Title: Improvements in or connected with tool handles
IPC: B25G3/02
Filed: 1944-06-03
Abstract: 574,633. Spade handles. HUNT & SONS, THE BRADES, Ltd., W., and ALLEN, C. A. E. June 3, 1944, No. 10700. [Class 61 (i)] A spade &c. stirrup handle comprising sheet metal arms a and a socket a<1> to receive the shaft b, has the wooden hand grip c mounted on a polygonal metal bar d disposed between the ends of the arms and subsequently welded thereto.
Patent GB-979317-A (GB)
Title: Method of and apparatus for the continuous dissolution of chemical compounds
IPC: B01F27/91
Filed: 1962-03-20
Abstract: 979,317. Continuous mixing appliances. UCB (UNION CHIMIQUE-CHEMISCHE BEDRIJVEN) S.A. March 20, 1962 [March 22, 1961], No. 10720/62. Heading B1C. Apparatus for continuously dissolving chemical compounds comprises a tank 9 having a vertical rotatable shaft 15 carrying at its upper end a propeller 16 vertically adjustable so that in operation it is just immersed in the solvent liquid to produce vigorous agitation. The tank has a closed jacket 23 through which a heat exchange medium is circulated by pipes 10, 11. Solvent liquid is supplied by a pipe 13 passing through the jacket 23 to the annular space 14, whence it overflows continuously down the wall 12 into the tank 9 ; and material to be dissolved is supplied to the top 22 of the tank 9. The solution flows at 17 through the open bottom of the tank 9 into the tank 8, over its wall 18 into the outermost tank 7, and out at 20. The wall 18 forms an annular weir determining the height of liquid in the tank 9, and is adjustable for height by means of the screw 19. The solvent liquid may be a mixture supplied by metering pumps 3, 4, Fig. 1 (not shown), and the solid may be supplied by a continuous automatic weigher or batcher. With an inner tank of capacity 150 litres, 50 tons per day of a solution of polyacrylonitrile or a copolymer thereof can be produced.
Patent GB-1423233-A (GB)
Title: Arrangement for compensating yawing moments in vehicles
IPC: B60T8/00
Filed: 1973-03-06
Abstract: 1423233 Vehicle steering and braking systems TELDIX GmbH 6 March 1973 [15 March 1972] 10823/73 Heading B7H [Also in Division F2] A vehicle includes an arrangement for compensating yaw movement due to differential braking at the steered wheels, the arrangement comprising means for detecting and comparing differential braking forces at those wheels and means for adjusting the steering linkage to correct for resulting yaw. In one embodiment, Fig. 1, the braking system includes antilocking controllers 8, 9 wheel brakes 10, 11 and a piston/cylinder 12, 13 for comparing the brake pressure at each wheel. Any movement of the piston is transmitted by linkage 14 to the steering rack 3. In another embodiment, Fig. 2, the brake system includes a pressure source 20 and a control device 21 which includes a valve 22, control valves 23, 24, 25, pressure sensors 26, 27, 28, a pedal pressure sensor 30 and an emergency piston arrangement 31. The brake pressures at the steered wheels 32 are compared in a piston/cylinder 35, 38 as in the Fig. 1 embodiment. Valves 36, 37 in the cylinder feed lines are kept open until the pressure source falls below a predetermined pressure at which stage they close and braking is effected through the emergency piston arrangement 31. In this embodiment when the brake pedal is depressed valve 22 opens and fluid passes via the open valves 23, 24, 25 to all wheels. A voltage signal produced by the pedal pressure sensor 30 is compared with the voltages of sensors 26, 27, 28; if the voltage of one sensor exceeds that of the pedal sensor the associated valve is switched to allow the brake pressure to fall. In another arrangement (Fig. 3, not shown) the deceleration or velocity of the steered wheels is sensed electrically, compared and yaw corrected by an electric motor. In a further embodiment (Fig. 4, not shown) the steered and non-steered wheels at each side of the vehicle are connected together by brake lines and the brake pressure from the wheel sets at opposite sides of the vehicle are compared as in the Fig. 1 embodiment. Differential pressures arising at the non-steered wheels may be superimposed on the steered wheel circuits.
Patent GB-722835-A (GB)
Title: Improvements in the production of polymerisation products
IPC: C08F212/14
Filed: 1952-04-30
Abstract: Vinyl aromatic compounds, e.g. styrene, methyl styrene and vinyl naphthalene, are polymerized with drying oils, e.g. castor oil, stand oil, isomerized linseed oil and wood oil, or with the condensation products of the oils or their acids with dibasic carboxylic acids, e.g. phthalic acid, and polyhydric alcohols, e.g. glycerol and pentaerythritol, in the presence of an alkyl benzene having at least 8 carbon atoms in the side chain, e.g. undecylbenzene.  The drying oil may be dissolved in the alkylbenzene and mixed with 1/2 to an equal amount of the vinyl aromatic compound, which may be added gradually during the polymerization which is effected at 140 DEG  to 200 DEG  C., preferably in the absence of accelerators.
Patent GB-639706-A (GB)
Title: Improvements in pipe or like wrenches
IPC: B25B13/50
Filed: 1948-04-20
Abstract: 639,706. Wrenches. WRAIGHT & CO., Ltd., F. L., and WRAIGHT, F. L. April 20, 1948, No. 10849. [Class 61 (iii)] The jaw face member 9 of the outer jaw 5 of a' pipe wrench is secured by a screw 14 at its rear end within a groove 8 undercut at its forward edge 12 to receive a chamfered forward end 11 of the jaw face member. The jaw face member of the inner jaw 4 is received by a slot which extends from the forward edge of the jaw and which may be undercut at its rear edge so that its jaw face member may be interchangeable with the upper jaw face member.
Patent GB-1113367-A (GB)
Title: Device for cutting flower stems and the like
IPC: B26B27/00
Filed: 1967-03-08
Abstract: 1,113,367. Horticultural knives. F. W. EARNEST. 8 March, 1967 [8 April, 1966; 27 Jan., 1967], No. 10938/67. Heading B4B. A device for cutting flower stems &c. comprises members 10, 11 of plastic engageable by the thumb and index finger of a user's hand, the members 10, 11 being connected to one another by a pivot 12 engageable in the crotch between the thumb and index finger of the hand, the member 10 having a base 15 to which is keyed a blade 16 having a bevelled portion 16a to form a cutting edge 17 and the member 11 having a base 23 provided with a groove 25 to engage the cutting edge 17, the groove having at one side an upstanding wall 26, the inner surface 27 of which constitutes the shear surface with which the cutting edge 17 coacts to cut the flower stem and having at the opposite side an upstanding wall 28, the upper surface of which has sawteeth 29, the inner edges of which are bevelled parallel to the bevelled blade portion 16a and grip the flower stem while it is being cut. The member 11 is provided at its rear end with a pair of laterally spaced ears 31 which embrace the rear portion of the blade 16. The rear portion of the blade is provided with a shoulder 20 having a notch 21 engageable by a flexible fin 32 on the base 23 to hold the members 10, 11 in their closed position. The member 10 is arcuately shaped at its front end 22.
Patent GB-269933-A (GB)
Title: Improvements in or relating to disc coils for transformers
IPC: H01F27/30
Filed: 1927-04-23
Abstract: 269,933. Siemens Schuckertwerke Ges. April 24, 1926, [Convention date]. Transformers.-In disc coils for transformers, the layers of turns or groups thereof are separated by blocks 4, preferably of wood, glued at intervals to a band 3 of fibrous material wound on the coil former simultaneously with the conductor 2. The blocks may be arranged alternately on opposite sides of the band 3 to afford access of cooling oil to both sides of the conductor. In a modified arrangement, the blocks are formed by folding the band 3 as shown in Fig. 5.
Patent GB-930336-A (GB)
Title: Textile lubricants
IPC: D06M13/02
Filed: 1961-03-27
Abstract: A textile lubricant comprises a major proportion of a highly refined light mineral oil having a viscosity at 100 DEG F. of 30 to 200 SUS, and minor proportions of (a) an oil-soluble alkali metal petroleum sulphonate, (b) a partial ester of an alkanepolyol and a fatty acid having at least 12 carbon atoms, (c) a highly sulphurized hydrocarbon, and (d) an alkylphenol.  Additive (a) may be a sodium or potassium petroleum sulphonate of molecular weight 300 to 900: (b) may be an ester of ethylene or propylene glycol, glycerol, erythritol, pentaerythritol, sorbitol or mannitol with lauric, myristic, stearic, oleic, linoleic, linolinic, or ricinoleic acid; (c) may be a sulphurized polyisobutylene, dipentene, terpinolene, cymene, carene, menthane, terpene oil, or long chain olefin obtained from paraffin wax; (d) preferably contains one or two tertiary alkyl radicals, many examples of suitable phenols and bisphenols being given.  The base oil may be a solvent-refined oil containing 10-20% aromatics and having a viscosity index of 90-120.  U.S.A. Specification 2,913,407 is referred to.
Patent GB-990708-A (GB)
Title: Improvements in or relating to controllable drive motor driving arrangements
IPC: H02K7/106
Filed: 1963-03-20
Abstract: 990,708. Automatic speed control. AMPEX CORPORATION. March 20,1963 [April 2,1962], No. 11128/63, Heading G3R. [Also in Division H2] A magnetic tape transport system 60 is driven at constant torque and constant selectable speed by a motor-brake 10 whose speed is selected at 64, detected by a tachometer 66, and corrected by signals supplied from a corrector 62, through a D.C. amplifier 61,to a hysteresis brake in the unit 10. The motor is of the hysteresis synchronous type supplied from 51.