baber/WOPTO huggingface dataset:
Patent GB-1430267-A (GB)
Title: Twist drills for drilling stone
IPC: E21B10/44
Filed: 1973-03-12
Abstract: 1430267 Stone-cutting drill HAWERA PROBST KG HARTMETALL WERKZEUGFABRIK RAVENSBURG 12 March 1973 [10 March 1972] 11767/73 Heading B3C A drill for drilling stone comprises a shank 1, a drill head 2 integral with the shank, a cutting insert 10 mounted in a transverse-angled slot 6 in the head and a dust removing helix 3. The bottom surface 7 may be concave so as to receive the convex edge of the insert. A recess 23, Fig. 2, is provided for the passage of the dust, or in a modification, Fig. 6, the dust passes through a recess 28 and is not guided beyond insert 10.
Patent GB-1384355-A (GB)
Title: Preparation of red shade molybdate orange pigments
IPC: C09C1/34
Filed: 1973-03-12
Abstract: 1384355 Molybdate orange pigment HERCULES Inc 12 March 1973 [5 April 1972] 11771/73 Heading C4A Red shade molybdate orange is obtained by introducing stoichiometric' amounts of a lead salt solution and a chromate/molybdate/sulphate solution separately and simultaneously into a further solution containing, per mole of lead salt introduced, 0À1-0À9 mole of Ba ions, 0À1-1À0 mole of Zn ions and 0À04-0À8 mole of an anion mixture comprising molybdate plus cromate and/or sulphate ions, the ratio moles Ba ions: moles anion mixture being greater than 1, and the chromate/molybdate/sulphate solution containing 81-91 mole per cent of chromate ions, 5-14 mole per cent molybdate ions, and 2-5 mole per cent sulphate ions, and recovering the precipitated pigment. The precipiation may be effected at a pH below 7, e.g. 5-1À6, and a temperature of 0-40‹ C. The further solution may also contain Pb, Cd, Sr and Ca cations and chloride, nitrate and tungstate anions. The lead salt solution can be the aqueous acetate or nitrate, and the chromate/molybdate/sulphate solution may be in the Na, K; Li or NH 4  salt form. Preferred Ba and Zn salts are the chlorides or nitrates. The pigment may be aftertreated with a coating of 0À5-20% by wt. of silica, alumina, titania, Al-Ti phosphate, Al silicate or Sb oxychloride.
Patent GB-294708-A (GB)
Title: Improvements in or relating to gas burners
IPC: F23D14/30
Filed: 1927-05-03
Abstract: 294,708. Fry, A. E., and Lighting Trades, Ltd. May 3, 1927. Atmospheric gas burners. - A superheating chamber A supplying a plurality of nozzles G is formed in one piece of clay or the like, the interior being divided into two parts communicating through a restricted passage. In one form, the chamber A is divided by a plate B supported from the underside of the chamber opposite the inlet F. In a second form, the chamber is vertically sub-divided by a tubular extension H from the inlet F. In a third form, the extension H is shorter and projects slightly into a cup formed in the base of the chamber. The Provisional Specificaion states also that the chamber may be made of metal.
Patent GB-1459302-A (GB)
Title: Temperature control systems
IPC: H05B3/74
Filed: 1974-03-18
Abstract: 1459302 Automatic control of temperature CORNING GLASS WORKS 18 March 1974 [28 March 1973] 11841/74 Heading G3R In a temperature control system in which a heating element HTE e.g. for a cooker hot-plate and having a linear positive temperature coefficient of resistance is supplied from an A.C. source PS via normally closed contacts a, b of an electrically operated switch TR, the element HTE is connected in series with a sensing primary winding TP2 of a transformer T, and an opposing reference primary winding TP1 having a larger number of turns is supplied with an adjustable reference current also via the switch contacts, the transformer secondary TS controlling the firing of an SCR in series with the control winding 11 of the switch so that the SCR is only fired when the temperature and thus the resistance of HTE have increased sufficiently for the ampÞre-turns of winding TP2 to be less than the ampÞre-turns of winding TP1. As shown the switch TR is a thermal switch, the coil 11 heating a bimetallic element 12 to actuate the contacts. Firing of the SCR controls cyclic operation of the switch contacts and the interruption of the current through heater HTE. The circuit is stated to be insensitive to changes of the SCR temperature and of the supply voltage. In an alternative embodiment, the switch coil 11 is supplied via the switch contacts Fig. 1a (not shown).
Patent GB-662473-A (GB)
Title: Improvements in and relating to condenser-charging regulators for electric circuits of photoflash equipment
Inventor: BRITTON PETER STANLEY
IPC: H05B41/32
Filed: 1949-05-04
Abstract: 662,473. Systems of charging condensers. LAURENCE INDUSTRIAL INSTRUMENT & CONTROL CO., Ltd. Jan. 13, 1950 [May 4 1949], No. 11872/49. Class 38 (iv). The voltage to which a condenser 5 for operating a photo flashlamp is charged is rendered independent of voltage variations of the charging source by a relay A which is controlled by a circuit responsive to the condenser voltage and which disconnects the condenser from the charging source upon the attainment of a predetermined voltage. The relay may be of the electrostatic or electromagnet type and, in the latter case, preferably has its iron circuit formed of low remanence material, such as Swedish iron. As shown in Fig. 1, a potential divider 1, 2 applies to an auxiliary condenser 6 and a discharge tube 7, 8, a voltage proportional to that across the main condenser 5 and when this has attained the predetermined value the tube strikes and discharges the auxiliary condenser through the relay which picks up, locks in over contacts a1 and opens the charging circuit of the main condenser at contacts a2. Due to current taken by the potential divider and relay, the voltage across condenser 5 starts to fall, so that the relay eventually drops out, closing contacts a2 to initiate re-charging of the condenser. In a modified circuit, the relay drops out under time control instead of voltage control. A further arrangement uses a moving- coil relay as the voltage-sensitive means.
Patent GB-1418424-A (GB)
Title: Material handling head
IPC: B66C1/48
Filed: 1973-03-13
Abstract: 1418424 Pneumatically operated clamps DEAN RESEARCH CORP 13 March 1973 [14 March 1972] 11898/73 Headings E2A and E2B A clamp for lifting a stack 22 of sheet material, comprises a plate-like jaw pivoted at 24 and forced into its gripping position by air pressure applied at 44 and suction at 50. The top of the stack acts as a seal for the lower chamber.
Patent GB-162536-A (GB)
Title: Improvements in or relating to convertible, closed and open fireplaces
IPC: F24B1/182
Filed: 1920-04-29
Abstract: 162,536. Bratt, L. G. J. April 29, 1920. Combined open fireplaces and cooking- stoves. - A fire-place adapted for use either as a close or open grate comprises a bottom grate, preferably of the type described in Specification 8719/02, in combination with a hinged hot-plate, swing trivets, and hinged shield members. Plates 20 hinged at the sides of the grate at 21 can be swung to an horizontal position to form the hot-plate, and trivets 5 hinged at 4, and forming a plane extension of the hot-plate, carry shield members 6 which rest on the forward lip of the grate 8, and so support the trivets. Flues 13 in the side walls 11 carry combustion products to the oven space 17, which is also heated by a back flue 15 from the boiler space 16. When used as an open grate, combustion products pass to the oven space by an opening 24 controlled by a sliding damper 23, which is operated by the lever device 25 and is also adapted to control the flues 13, 15.
Patent GB-812600-A (GB)
Title: Improvements in or relating to electromagnetically-operated oscillating armature devices
IPC: G10K1/062
Filed: 1957-04-12
Abstract: 812,600. Oscillating motors. TELEFONAKTIEBOLAGET L. M. ERICSSON. April 12, 1957 [April 12, 1956], No. 12064/57. Class 35. [Also in Group XXXVIII] An electromagnetically-operated oscillating armature device for use in bells and telephone receivers comprises a magnetic core 1 formed by a magnetically conductive closed loop 12, 13, 15, 16, 14 having a re-entrant portion 17 ... 19 forming a cavity accommodating a permanent magnet 5 which has one pole directed inwardly towards the bottom 18 of the portion and the other pole directed outwardly towards the centre of an armature 4 pivoted at such centre on a spindle 41; two air gaps 2, 3 exist between the ends of the armature 4 and the core 1 at locations 15, 16 outside the re-entrant portion and the portion 12 of the core carries an energizing winding 21 connectable to an A.C. source whereby in operation the gaps 2, 3 carry both the permanent magnet unidirectional flux and the energizing winding alternating flux as they pass between the core and armature, to cause the armature to oscillate about its pivoting spindle. As shown, Fig. 1, the core 1 is M-shaped and the re-entrant portion sloping arms 17, 19 are so dimensioned or so apertured that they are saturated by the permanent magnet flux. The armature ends have pole studs 42 to prevent sticking. In the bell construction of Fig. 2 a U-shaped clamp 7 holds via a spring 72 the magnet 5 against the bottom 18 and mounts the armature 4 to which is screwed a clapper bar 42.
Patent GB-346577-A (GB)
Title: Improvements in splash guards for the wheels of vehicles
IPC: B62D25/18
Filed: 1930-04-17
Abstract: 346,577. Lateral - splash guards. KENNEDY, A. C., 21, Nelson Street, South Hiendley, near Barnsley. April 17, 1930, No. 12148. [Class 136 (i).] A folding splash guard comprises a flexible screen suspended by a system of pivoted links connected at their upper ends to a container and to a spring-pressed sliding bar therein, in such a way that the guard is yieldable and self-adjusting when extended for use, and is capable of being folded into or adjacent to the container so as to be entirely clear of the wheel when not in use. A rubber, leather, &c, screen N is connected by a hinge to a plate M suspended by two sets of links, which are pivoted at V, W to a hinged part A of a container C and at X, Y to a sliding bar B controlled by a spring D, the part A being shown as opened out about the hinge S to facilitate access to the mechanism. The links are adapted to fold into the container C, and to be secured therein by a clamping-nut Z acting on the bar B and also by a safety catch associated with an adjustable stop 3. The unfolding movement of the guard is limited by the stop 3, which acts on a pin 4 attached to the plate B and may be adjusted to regulate the height of the guard above the ground. The container C is pivoted at Q to brackets R on the mudguard T, and is adapted to be turned down into a horizontal position above the mudguard, the container being secured in either position by means of pivoted arms and clamping- screws. Catches O, P, pivoted to the plate M, hold the screen N in the vertical plane when in use.
Patent GB-955044-A (GB)
Title: Improvements in screws and screwdrivers
IPC: B21K1/46
Filed: 1962-03-29
Abstract: 955,044. Screw-heads. P. LAUNAY. March 29, 1962 [March 31, 1961], No. 12180/62. Heading F2H. [Also in Divisions B3 and B4] The screwdriver slot in a screw-head (which may, as shown, have a diameter greater than the slot length) has a cross-section of an elongated hexagon shape and the six sides 14, 15 converge downwardly to a flat bottom 3 in which there is a frusto-conical hole 4 whose periphery lies within that of the slot in plan and whose bottom 41 is rounded. The slot sides 14 may lie in planes which are tangential to the surface of the hole 4 or which intersect that surface so that pairs of flats 22 are formed at two opposite sides of the hole. The slot and hole are formed (see Division B3) by a punch, Figs. 4-9 (not shown), of a shape complementary to the recesses. The screw blank has a slightly oval head which becomes circular after the forging. The recesses, due to cooling after working, will be smaller than the punch and also than the corresponding screwdriver tip (see Division B4) which is similar to the punch.
Patent GB-1186500-A (GB)
Title: Improvements in Electrical Circuits
IPC: H02H7/18
Filed: 1969-03-07
Abstract: 1,186,500. Battery discharge control systems. KIEPE BAHN ELECTRIK G.m.b.H. 7 March, 1969 [7 March, 1968], No. 12197/69. Heading H2H. [Also in Division G3] A control system for a battery B, to maintain it connected to a load when its voltage is equal to or above a predetermined value and to disconnect it from the load when its voltage falls below this value, comprises the circuit shown in which the value is set by a Zener diode ZD whose conducting condition causes transistors T1, T2 to maintain a stabilized voltage across a relay coil M and whose non-conducting condition alters the state of a bi-stable circuit T3, T4 to switch off transistors T1, T2. The coil M controls the switch (not shown) connecting the battery and load to produce the abovementioned operation above or below the predetermined value. The circuit must be reset after an operation to disconnect the battery and the restoration of the battery voltage. This is effected by opening and closing the switch S to discharge and recharge the capacitor C and so restore the bi-stable circuit T3, T4 to its normal (stabilized output) condition.
Patent GB-561967-A (GB)
Title: Hydraulic cement composition and method of making same
IPC: C04B28/02
Filed: 1942-08-29
Abstract: Hydraulic cement clinker is ground with the addition of 0.005 to 0.045 per cent of ethylene and/or propylene glycol to facilitate grinding and improve concrete made with the cement. Cement dispersing substances, e.g. waste sulphite liquor residue or naphthalene sulphonic acids; wetting agents, e.g. lauryl sodium sulphate; accelerators, e.g. calcium chloride; puzzuolanic materials &c. may also be incorporated in the mix.  The glycols may be added to cement after grinding.ALSO:Hydraulic cement clinker is ground with the addition of 0.005 to 0.045 per cent of ethylene-, and/or propylene glycol to facilitate grinding and improve concrete made with the cement. Cement dispersing substances, e.g. waste sulphite liquor residue or naphthalene sulphonic acids; wetting agents, e.g. lauryl sodium sulphate; accelerators, e.g. calcium chloride; puzzuolanic materials &c. may also be incorporated in the mix.  The glycols may be added to cement after grinding.
Patent GB-767583-A (GB)
Title: Improvements in or relating to lamination casting
IPC: B22D11/00
Filed: 1952-05-14
Abstract: 767,583. Continuous-casting machines. BRENNAN, J. B. May 14, 1952, No. 12214/52. Class 83 (1). [Also in Groups V and XIII] A method of lamination-casting of metal, ceramic-material, quartz, mica, germanium, silica, glass, &c. comprises locating a layer of material 6 with respect to a former 2, which extends into a cooling-zone, feeding the layer through a reservoir of molten-material 11 of lower melting-point, shaping the moltenmaterial on the layer, and cooling and solidifying the material on the layer. The core 2 is of metal or ceramic material of any cross-section and is supported for axial movement or held fast by a bracket 1. A metal sheet 6 is unwound from a drum 7 and formed by rolls 10 on to the mandrel. Alternatively, the sheet 6 is cast on the core by passing the core through a pool of molten metal. The core may be of zirconium-oxide, graphite, plaster, metal, sand or carbon and may be in the form of an annular ring or of stacked divisible moulds, and may be permanent or destructible. The core may be cooled internally. The pool 11 is heated by high-frequency coils 12 and the die 14 cooled by cooling-coils 15. A tool 16 cuts the laminated tubing into lengths. Splines on the mouldportion 14b may be provided to produce strips of laminated material. Alternatively, the cast metal may be applied to the inside of a tube, or to the inside and outside, or to both sides of a strip. Again the core may have a series of recesses so that separate lengths of bushings are produced. A perforated guide-tube may be provided centrally in. the pool 11. In a modification, two steel strips 18, 19, Fig. 3, are gripped between annular or straight mouldparts 20, 21. As the parts pass through the pool 11, metal enters through passages 27, 28 to produce a bronze layer 22, 23 on each steel strip. In a further modification, only one strip is gripped between similar mould-parts to cast a lamination on each side of the strip. The mould-parts are carried through the pool by chains or hydraulic pushers. The operations may be performed under variable pressures in an inert gas or under vacuum, as in Specification 748,643. The metal may be de-oxidized by carbon-monoxide bubbled through it, as in Specification 748,643. Reference has been directed by the Comptroller to Specifications 734,837 and 735,869.
Patent GB-1270762-A (GB)
Title: A sealing device for a shaft
IPC: F16J15/3244
Filed: 1970-03-13
Abstract: 1,270,762. Seals. DORNIER SYSTEM G.m.b.H. 13 March, 1970 [28 March, 1969], No. 12214/70. Heading F2B. A sealing device for a shaft 1 rotatable in a housing 4, e.g. between two fluid media at different pressures comprises a sealing fluid conveyer thread 2, a packing seal 8, and a bush 5, axially displaceable to disengage the packing seal 8 from the shaft 1. At relatively low speeds of rotation, two packing seals 8 sealingly engage shaft collars 3 at each end of the housing 4. At higher speeds a barrier liquid within the space between the seals 8 is drawn into a gap 17 between two bushes 5 by the conveyer thread 2, the bushes 5 thus being urged apart. Annular projections 6 lift lips 9 of the seals 8 from the collars 3, and a sealing action is instead provided by the inward axial conveyance of liquid by the threads 2 into the gap 17. Projections 14 prevent rotation of the bushes 5, rings 13 sealing the bushes 5 against the internal wall of the housing 4. In a modification, Fig. 2 (not shown), a spring element (11) provides an axial biasing force on one bush 5 to compensate for the pressure drop across the housing 4.
Patent GB-1100146-A (GB)
Title: Improvements in or relating to machines for cleaning and dressing fish
Inventor: CHRISTIE PETER JOHAN FRETHEIM
IPC: A22C25/00
Filed: 1966-03-21
Abstract: 1,100,146. Cutting, cleaning and dressing fish. TRIO FABRIKKER A.S. DE FORENEDE NORSKE LAASEOG BESLAGFABRIKER. 21 March, 1966, No. 12314/66. Heading A2U. A machine for cutting, cleaning and dressing fish comprises two width-sensing wheels 1 rotatably mounted on the ends of two arms 2 pivoted, at 3, to two members 5 turnable about pivots 6. The other ends of the arms 2 are connected by an adjustable link 4. Mounted on the members 5 are transverse drive shafts, respectively carrying pairs of circular knives 7 and 8. The knives of each pair are disposed on opposite sides of the longitudinal axis of each fish being treated. A fish, in passing between the wheels 1, turns the members 5 about their pivots 6, so that the space between the knives of each pair is automatically adjusted, to suit the width of the fish. The machine may be constructed with only one pair of knives.
Patent GB-190410-A (GB)
Title: Improvements in silos
IPC: B65D90/08
Filed: 1922-05-02
Abstract: 190,410. Monroe, W. H. May 2, 1922. Joints, carpenters'.-The doors and doorframes of timber silos are constructed to allow expansion &c. The door 10 is shown as applied on the inside of one section of an octagonal silo which is constructed of tongue-and-groove timbers joined by means of mortises cut at angles of 45‹. The door jambs have ribs 14, 15 engaging grooves in the timbers and are held in place by notched cleats 16 bolted to the timbers above and below the opening and allowing expansion &c. The boards of the door are joined by corrugated metal straps 11. The edges of the door are bevelled.
Patent GB-1292815-A (GB)
Title: Glass protector
Inventor: COLMAN JOSEPH RICHARD JOHN
IPC: B44D3/16
Filed: 1969-03-08
Abstract: 1292815 Heat shield for paint stripping J R J COLMAN 17 March 1970 [8 March 1969] 12357/69 Heading A5A A heat shield or mask for protecting a pane of glass from a blow lamp used to strip paint from the surrounding frame comprises two adjacent side walls 5, 6 at an angle to each other and to an upper wall 4, and a handle 9 for holding the shield in its position of use. The underside of wall 4 is fitted with suction cups 10 for attachment to the pane. The shield is of non-flammable material, e.g. sheet metal, and provides a heat-insulating air space between its upper wall 4 and the pane.
Patent GB-825758-A (GB)
Title: Improvements in or relating to refuse disposal ducts
Inventor: NYST ALFRED
IPC: E04F17/12
Filed: 1956-04-23
Abstract: 825,758. Refuse shoots. SHUNT. April 23, 1957 [April 23, 1956], No. 12369/56. Class 78 (1). [Also in Group II] Refuse is fed to a main shoot 2 through a branch shoot 5 at each floor. Each branch shoot has a hinged hopper closure 6 sealed by a gasket at 13, and is of a length such that a person cannot reach down as far as the main shoot.
Patent GB-1420091-A (GB)
Title: Telephone instruments
IPC: H04M1/08
Filed: 1972-03-16
Abstract: 1420091 Sets GENERAL ELECTRIC CO Ltd 15 March 1973 [16 March 1972] 12372/72 Heading H4J A pivotally mounted cradle lever 1 (Fig. 1) is connected to a lever 7 by a pivotal link 10. The lever 7 serves to operate a switch in dependence upon movement of the cradle lever 1. Preferably a portion 6 of lever 7 operates a plunger 5 of a microswitch 4. When a handset is placed on-hook the force/displacement characteristic of the mechanism is substantially constant or falls from an initial value at least over a portion of the normal range of displacement (Fig. 2, not shown). The force/displacement characteristic may later increase as the lever portion 6 engages the plunger 5. Lever 1 is a substantially U-shaped cradle mounted about a horizontal pivot axis 2. Its ends have plastics caps 3. Lever 7 is pivoted about a parallel axis 8. The upper and lower limits of the cradle lever 1 are determined by stops 13, 14 projecting from the structure 15 on which levers 1 and 7 are mounted. The upper limit of movement of the lever 7 is determined by a stop 16 on link 10 which bears against a portion of lever 7. A return spring (not shown) acting about the axis 8 or about the pivot point 12 applies a torque to raise both levers 1, 7 to their respective upper positions when the handset is off-hook. Alternate pivot holes 21 on the cradle lever 1 permit the position of the upper pivot point 11 to be altered to set the initial position of the lever 7. A latch 18 may be used to hold the mechanism in the " on-hook " condition for test purposes. Link 10 and lever 7 are of moulded plastics material.
Patent GB-550413-A (GB)
Title: Improvements in or relating to printing presses
IPC: B41F11/00
Filed: 1941-03-14
Abstract: 550,413. Printing-machines. DAVIDSON, W. W. March 14,1941, No. 12467/42. Convention date, March 18, 1940. Divided out of 550,523. Drawings to Specification. [Classes 100 (i) and 100 (ii)] The Specification comprises a divisional application from Specification 550,523, and the description in the two cases is substantially identical but the claims differ. The present invention is concerned mainly with a printing-press in which sheets are carried around a printing roller by means of a chain formed in a closed loop, and fitted with combined register and gripping means for registering the sheets to be printed and carrying them through the printing rollers.