baber/WOPTO huggingface dataset:
Patent GB-863878-A (GB)
Title: Improvements in apparatus for slicing metallic and other bodies
Inventor: SINCLAIR WILLIAM DONALD
IPC: B28D5/04
Filed: 1957-10-25
Abstract: 863,878. Automatic reverse-gear. BRITISH THOMSON-HOUSTON CO. Ltd. Oct. 25, 1957, No. 33422/57. Class 80 (2). [Also in Group XXIII] The wire of a wire saw is reversed in movement by means of a mechanism comprising an arm 117 pivoted at either end to links 109, 1091 which in turn are pivoted to bell-cranks 111, 111<SP>1</SP> pivoted to a base plate at 112, 1121 and at their free ends to sleeves 115, 115<SP>1</SP> on arms 116, 1161 having stops 117, 117<SP>1</SP> at one end and pivoted to toggle mechanisms 119, 121 and 1191, 121<SP>1</SP>. The alternate movements of the toggle mechanisms produce swinging movement of an arm 102 pivoted at 103 and connected by a flat spring 101 to an arm 31 which connects a clutch-plate with one or other of two discs rotating in opposite directions. The arm 117 is moved by a carrier supporting pulleys engaging oppositely directed loops of the saw wire. Specifications 717,874 and 771,622 are referred to.
Patent GB-1482379-A (GB)
Title: Exertion of compressive forces on moving webs
IPC: D21G1/00
Filed: 1975-08-12
Abstract: 1482379 Calendering paper BRUDERHAUS MASCHINEN GmbH 12 Aug 1975 [24 Aug 1974] 33468/75 Heading D2A A calender e.g. for a paper web having at least one nip defined by a hard roll 2 and a resilient roll 3, and provided with means for applying an adjustable lifting force to the bearings of at least one of the rolls 2, 3, e.g. for relieving the roll of the weight of its bearings, is provided with means for temporarily increasing the lifting force in order to reduce the compressive force between the rolls 2, 3 to zero but without separating the rolls from the web, thereby allowing passage of joints in the web through the calender without damage. As shown the bearing cheeks 4 of all but the top and bottom rolls of the supercalender 1 have bosses 6 overlying nuts 17 threaded on suspension spindles 7 which pass through the  bosses 6. As shown in Fig. 2 each nut 17 supports a housing 18 having two diametrically opposed hydraulic cylinders 23 in which pistons 24 work to apply lifting forces to the underside of the overlying boss 6. The cylinders 23 are connectible to two sources of different pressure whereby the usual or the temporarily increased lifting force may be selectively applied to the boss 6. Alternatively, as in Fig. 5 (not shown) each housing 18 may have four piston and cylinder devices, two being supplied with pressure to apply the usual lifting force to the boss 6 and all four being supplied with pressure from the same source to apply the increased lifting force. The top and bottom rolls may have separate piston/cylinder devices 14, 10 for separation of the rolls 2, 3.
Patent GB-177208-A (GB)
Title: Improvements in or relating to railway signals
IPC: B61L23/12
Filed: 1920-11-26
Abstract: 177,208. Stockdale, R. H. Nov. 26, 1920. Switches, mechanical, without quick action; gravity and inertia switches; locking.-For the purpose of cancelling the permission received from the advance cabin for a train to go forward when the train is not required to proceed, there is provided a key normally locked in a switch in the circuit of the semaphore-lock release magnet and/or the " accepting " circuit, but which can be removed, after opening the switch, for use in a reversing switch in the bell circuit to enable a reversed current to be sent to the accepting station to release the polarized lock on its accepting key. The key can onlv be removed from the reversing switch when normal, and from the switch in the semaphore release circuit when that switch is open and the semaphore is off. A rack and pawl locking device prevents replacement of the semaphore to " off " position after it has been partially, but not fully, moved to the " on " position. The mechanism for locking the semaphore and the switch is shown in Fig. 2 applied to a lock of the kind described in Specification 20196/14, [Class 105, Railway signals &c.]. The tappet carries a ratchet 101 and two pins 103<a>, 103<b> which engage the end of a pivoted pawl 202 at the ends of the stroke. The pin 103<a> throws the pawl into engagement with the ratchet 101 so that if the tappet 100 is moved to the right, its return is prevented until it has been fully re-set so as to become locked by the latch 30, in which position the pin 103b restores the pawl 202. The lock on the switch comprises two ratchet discs 53 with reversed teeth and two pawls 51, Fig. 4, operated by a bar 102 on the tappet, depressions 50 being so positioned that the pawls allow rotation in one direction when the slide 100 is in its extreme left-hand position, in the other direction when the slide is in mid-position and prevent any movement while the slide is in its other extreme position.
Patent GB-342703-A (GB)
Title: Improvements in the manufacture and production of sodium cyanide
IPC: C01C3/10
Filed: 1929-11-04
Abstract: Sodium cyanide briquettes are formed by pressing the pulverulent dry salt which may contain some potassium cyanide at a pressure of at least 700 kgs. per sq. cm., preferably while warming say to 50 DEG C.  The product is a translucent vitreous mass of high mechanical strength.
Patent GB-951245-A (GB)
Title: Improvements in or relating to the fluid transfer of solid particles
Inventor: CLAYTON CHRISTOPHER GEORGE ALB
IPC: B01J8/00
Filed: 1960-09-30
Abstract: 951,245. Pneumatic conveyers. GAS COUNCIL. Sept. 21, 1961 [Sept. 30, 1960], No. 33607/60. Heading B8A. [Also in Division F1] In a method of transferring solid particles by fluids introduced into a container 10, Fig. 1, having a perforated or porous fluidizing bed 11, additional conveying fluid is introduced into the upper part of the container for transferring the particles upwardly through the outlet 18. The solid particles are introduced through a pipe 12 at the side of the container and the additional fluid may be introduced through a pipe 15 passing through the porous bed 11. In a modification the additional fluid is introduced with the solid particles, through the pipe 12, and the pipe 15 is omitted. Specification 951,247 is referred to.
Patent GB-943932-A (GB)
Title: Method of moulding brick
IPC: B28B23/00
Filed: 1961-09-20
Abstract: 943,932. Moulding refractory bricks. M. H. DETRICK CO. Sept. 20, 1961 [Sept. 21, 1960], No. 33652/61. Heading B5A. [Also in Division F4] A method of moulding a brick comprises supporting on a disruptable means a plurality of elongated metal members 11, 11<SP>1</SP> in spaced relationship from the side and end faces of a mould, filling the mould cavity with a refractory material, rupturing the supporting means, and compressing the material. The supporting means comprises transversely extending members 16, 21 of a hardened wire welded to the metal members 11, 11<SP>1</SP>. Members 16 possess leg portions 17 and members 21 possess portions 22 extending diagonally toward the junction between the side and end walls of the mould. Notches 18, 19, &c. are formed in the supporting members so that when the material which is placed in the mould is compressed by two plungers moving toward each other, the support will rupture. The centre metal member 11<SP>1</SP> is foreshortened so that a hanging cavity may be moulded into the brick. A modification of the supporting means comprises a member having a transversely extending portion 16 together with a portion 17<SP>1</SP> extending diagonally towards the bottom corner of the mould. The metal members 111 as used with the modified support are all of the same length. The material is compressed by plungers mounted at the top and bottom of the mould cavity.
Patent GB-1442442-A (GB)
Title: Internal combustion engines
IPC: F02M35/04
Filed: 1973-07-16
Abstract: 1442442 IC engines, admission and exhaust passages L ELSBETT and G ELSBETT 16 July 1973 [17 July 1972] 33710/73 Heading FIB I.C. engine, having valves to close admission and exhaust passages, wherein at least one of the passages includes a valve portion 3 on the valve axis V, a helical portion 4 the axis Y of which extends adjacent the valve axis in a plane K including the valve axis and a curved portion 5 which extends from the plane, and includes a part 13 of reverse curvature to the remainder of the curved portion, the helical portion 6 lying between the valve portion and the curved portion and the junction between the helical and curved portions is eccentrically disposed relative to the valve axis and is at or near the plane K. The wall 13 of the curved portion is tangential to a line E normal to the plane K and passing through the axis Y of the helical portion. The passage ends at a plane K' passing through the point of tangency. The helical portion has a constant pitch, a constant maximum radius over its arcuate length and extends through at least 220 degrees of arc. The longitudinal centre line 22 of the curved portion lies close to, or preferably in a plane which is substantially perpendicular to the plane K. The length of the valve portion 3 is 0.3 to 0.5 times the effective diameter of the valve. The passage has a generally circular cross-section and the pitch of the helical portion is twice the mean diameter of the passage.
Patent GB-911128-A (GB)
Title: Separation of solutes
Inventor: HARTLEY GILBERT SPENCER
IPC: G01N30/84
Filed: 1959-10-06
Abstract: <PICT:0911128/III/1> <PICT:0911128/III/2> A method of separating solutes dissolved in a solvent by contacting it with another solvent only partly miscible with the first solvent and of different specific gravity, comprises passing one of the solvents through a series of mixing vessels each containing mainly the other solvent, agitating the contents of each vessel and maintaining the agitated solvents at a temperature at which they are miscible with each other or of increased miscibility, the moving solvent passing from one vessel to the next through tubes maintained at a temperature at which the two solvents separate, the tubes being so designed that only the moving solvent is transferred from each vessel to the next.  In one embodiment the heavier solvent containing the solutes is placed in a series of mixing vessels of which one is shown at 1 in Fig. 1.  The lighter solvent enters at inlet 5a and is mixed with the heavier solvent by a soft iron rod 2 sheathed in glass or polytetrafluoroethylene and moved by a varying magnetic field induced by electromagnets 7.  The mixing vessels are immersed in an oil or water bath 8 at a temperature at which the solvents form a homogeneous solution.  The solution in vessel 1 passes to an outlet tube 3, all the outlet tubes being in a further bath 9 at a temperature at which separation occurs, the lighter solvent passing through a tube 6 leading to the next mixing vessel and the heavier solvent returning to vessel 1.  When the heavier solvent is the moving solvent apparatus as shown in Fig. 3 may be used, the lighter solvent being in a series of mixing vessels, one of which is shown at 21, immersed in a bath 28 and having outlet tubes, one of which is shown at 23, each outlet tube being connected to the inlet tube (e.g. inlet tube 25) of the next mixing vessel.  The outlet tubes are immersed in a bath 29.  The solvents are mixed by sheathed soft iron rods 22 moved by permanent magnets 27 on a moving belt 24. Specification 781,484 is referred to.
Patent GB-645371-A (GB)
Title: Improvements in electronic amplifiers
IPC: H03G11/00
Filed: 1947-12-22
Abstract: 645,371. Television. BRITISH THOMSONHOUSTON CO., Ltd. Dec. 22,1947, No. 33835. Convention date, July 26, 1945. [Class 40 (iii)] [Also in Group XL (c)] A limiter comprises a valve biassed to operate at the lower part of its characteristic, to which an auxiliary valve is cathode-coupled, a separate variable bias being provided and so adjusted that the auxiliary valve becomes conductive when the first valve is blocked and maintains the output impedance constant. As used in a television transmitter to suppress excessive amplitudes in mixing video and synchronizing signals, the signals are applied to valves 1, 2 respectively which are coupled to the limiter 3 by a transmission line network described in Specification 456,450. The limiter 3 and auxiliary valve 4 are coupled by a common cathode load comprising a cable terminated in a resistance 17; the cathode-toground capacity of the valves may be compensated by insertion of an inductanceresistance network 19. The level at which the valve 3 limits is adjusted by means of a bias potentiometer 15, while the bias on the valve 4 is independently adjusted from a potentiometer 20. Any difference in cathode impedance due to the mutual conductances of the valves differing is compensated by series resistance 14 inserted in the appropriate cathode lead. The output may alternatively be taken from the anodes connected in parallel, Fig. 2 (not shown), in which case the common cathode impedance comprises inductance and resistance in series and with the valve capacities in shunt.
Patent GB-445727-A (GB)
Title: Improvements in catalysts
IPC: B01J21/04
Filed: 1934-11-24
Abstract: An improved carrier for catalysts is obtained by grinding mineral bauxite, adding water thereto during or after the grinding, and calcining it at red heat (900--1000 DEG  C.)  The treated bauxite may be impregnated with catalysts (1) by depositing on it the hydroxides of aluminium, zinc, or magnesium, p  or chloride of lime from aqueous suspensions of these compounds: (2) by precipitating on it cupric oxide from a soluble copper salt by treatment with an alkaline hydroxide: (3) by impregnation with an aqueous solution of the crystalline chlorides of aluminium, zinc, and/or magnesium and evaporating to dryness.  The catalyst may be used for the conversion of mineral oils at temperatures of 150--300 DEG  C.  The spent catalyst may be reactivated by boiling, with water, decanting and calcining.  Specification 445,757 is referred to.
Patent GB-465001-A (GB)
Title: Improvements relating to facing tiles
IPC: E04F13/12
Filed: 1935-12-06
Abstract: 465,001. Composite facing - tiles. GAUCHE, A. Dec. 6, 1935, No. 33862. Convention date, April 16. [Class 87 (i)] [Also in Group XXII] A facing-tile comprises a thin meta plate a and an insulating backing b o: felt and bitumen, and is provided witl a rounded chamfer d extending to its edges. The face of the tile may bE decorated by painting, varnishing lacquering or enamelling. The tile is made by cutting out from a metal sheet with felt stuck to the back thereof The tiles may be fixed to a surface by nailing, cement or an adhesive such as siccative bitumen and rubber-like material. A number of tiles of various sizes may be stuck to a backing sheet to form a larger unit.
Patent GB-1160778-A (GB)
Title: Lifting Clamp
IPC: B66C1/48
Filed: 1967-07-24
Abstract: 1,160,778. Grippers for lifting sheets. J. C. RENFROE & SONS Inc. 24 July, 1967 [19 Oct., 1966], No. 33944/67. Heading B8A. A lifting clamp for sheet materials in which a movable jaw 25, Fig. 3, is rotated towards a fixed jaw 24 as the clamp is raised by a link 42 has a locking device 53 comprising two interlocking parts 55, 56, Fig. 7. The parts engage one another through telescopic portions 64, 65 in such a way that rotation imparted to the cam 56 by a handle 58 is transmitted to the member 55. The device is rotatably supported in the side plates of the clamp by a pin 59 and a bolt 61. A spring 54, Fig. 3, urges the jaw 25 into operative position as shown in Fig. 3, and the cam 56 holds the jaws open in the opposite position of the locking device, Fig. 4 (not shown). U.S.A. Specification 2,654,630 and Specifications 1,048,337 and 1,125,243 are referred to.
Patent GB-1029816-A (GB)
Title: A bulb holder for use with printed circuit panels
Inventor: GREASLEY ERIC ARTHUR
IPC: H01R33/22
Filed: 1962-09-05
Abstract: 1,029,816. Lampholders. PRESSAC Ltd. Aug. 14, 1963 [Sept. 5, 1962], No. 34002/62. Heading H2E. A screw lampholder for mounting on a printed circuit panel includes a pair of split, resilient arms 13 with tapered lower faces which grip the panel when the holder is inserted through a keyhole slot and rotated. Auxiliary wedges 7 help to lock the holder in position. The internal lampholder contacts are brought out to resilient tongues 8. In a modification, Fig. 6 (not shown), the arms 13 are hollow instead of split to obtain resilience.
Patent GB-882139-A (GB)
Title: Improvements in or relating to the treatment of pulverulent material to improve storage characteristics
IPC: C09K3/22
Filed: 1959-10-07
Abstract: The storage properties of pulverulent materials, e.g. ore concentrates, Glauber's salt and common salt, are improved by applying to the surface of a stockpile of the stored material an aqueous solution of a water-soluble film-forming polysaccharide or polysaccharide derivative.  Suitable film-forming substances are water-soluble cellulose ethers and esters, particularly ethyl-hydroxyethylcellulose and carboxymethylcellulose, alginic acid and starch derivatives.  The solution preferably has a concentration of 0,5-6% by weight of film-forming substance and is applied at 1-10 litres per square meter of pulverulent material.  Agents which (a) harden the film or render it less soluble in water (e.g. formaldehyde, dialdehydes, ketoaldehydes and diketones) (b) soften the film (e.g. solid polyethylene glycols of average molecular weight of at least 1000) and (c) increase the hydroscopicity of the film (e.g. glycerol and low molecular weight polyethylene glycol) may be included in the solution.  A surface active agent may also be included.ALSO:The storage properties of pulverulent ores, particularly pyrites concentrates, are improved by applying to the surface of a stockpile of the stored material an aqueous solution of a water-soluble film-forming polysaccharide or polysaccharide derivative.  Suitable film-forming substances are water-soluble cellulose ethers and esters, particularly ethyl-hydroxyethyl-cellulose and carboxymethylcellulose, alginic acid and starch derivatives.  The solution preferably has a concentration of 0,5-6% by weight of film-forming substance and is applied at 1-10 litres per square meter of pulverulent material.  Agents which (a) harden the film or render it less soluble in water (e.g. formaldehyde, dialdehydes, ketoaldehydes and diketones) (b) soften the film (e.g. solid polyethylene glycols of average molecular weight of at least 1000) and (c) increase the hydroscopicity of the film (e.g. glycerol and low molecular weight polyethylene glycol) may be included in the solution.  A surface active agent may also be included.
Patent GB-1268006-A (GB)
Title: Hydraulic pressure casting machine
IPC: B22D17/32
Filed: 1969-07-07
Abstract: 1,268,006. Pressure casting machines. WOTAN-WERKE G.m.b.H. 7 July, 1969 [6 July, 1968], No. 34063/69. Heading B3F. [Also in Division Fl] An hydraulic intensifier for increasing the hydraulic pressure in the working cylinder space 3 on one side of a moulding piston 2 near the end of its stroke comprises a stepped piston 12 which when fluid pressure is supplied through a line 15 and valve 14 to the larger face 13 thereof displaces a valve member 22 against a seat 24 to cut off the low pressure fluid supply through lines 7, 8 to space 3; the pressure therein then being intensified whilst the pressure in an annular chamber 18 of the intensified cylinder is connested to atmosphere. The initial portion of the working stroke of piston 2 is effected by moving a valve 5 to the right so as to connect a pump delivery line to lines 7, 8 and space 3 and to the underside of a servo piston 33. Towards the end of the stroke of piston 2 a pressure rise in a line 25 actuates a pressure switch 26 to operate valve 14 which connects the feed line 15 to the end 13 of the intensifier piston 12. On removal of the mould at the end of the casting operation the pressure in chamber 3 automatically falls to a level at which valve 14 assumes the position shown and return of piston 2 is effected by switching valve 5 to pressurize chamber 4 whereby chamber 3 exhausts through holes 23 of valve 22 until at the end of the return stroke of piston 2 a pressure rise in chamber 4 opens a valve 35 to admit pressure through line 34 to piston 33 which returns valve 22 to the . initial position shown.
Patent GB-786343-A (GB)
Title: Improvements in and relating to electrical information storage apparatus
Inventor: RINGROSE JOHN WILLIAM
IPC: G11C11/26
Filed: 1954-11-24
Abstract: 786,343. Electric digital-data-storage apparatus; digital electric calculating-apparatus. PLESSEY CO., Ltd. Nov. 2, 1955 [Nov. 24, 1954], No. 34065/54. Class 106 (1). An electrical information-storing apparatus comprises an electronic signal generator responsive to signals applied thereto to produce timing signals at different recurrence frequencies, and gate means responsive to the timing signals to control the entry and read out of information into and from a storage element respectively at the different frequencies. The apparatus shown is arranged to receive numbers from punched record cards and to transmit the numbers to an electronic digital computer. Each card contains 80 columns storing 10 8-digit decimal numbers, each digit being represented by a differentially positioned hole in a corresponding column. A digitstoring stage is provided for each card column, only the stages for columns 1, 8, 9 and 80 being shown. Each stage comprises a dekatron-type counting tube 10 in which a discharge is stepped from one of ten cathodes to the next cathode by applying consecutive pulses to guide electrodes via inputs 12, 14. Such pulses are supplied by generator 22, in response to pulses applied thereto, to lines 24 and 26, the pulses on 24 being passed to 12 only when gate 34 is opened by a trigger unit 32. The units 32 receive on terminals 20 differentially timed triggering pulses from sensing brushes in the card reader, whereby each counter is stepped on a number of times corresponding to the sensed digit, the pulses applied to 22 being supplied from the card reader via terminal 28 in syncronism with the card feed. For read-out, 10 successive clock pulses from the computer are applied to 22 via terminal 30, so that the counters are cycled and differentially timed digit-representing pulses are obtained from " zero outputs 16 and applied to gates 38 which are selectively opened in groups of eight by potentials from terminal 40, whereby the stored numbers may be read out separately. The counters are zeroizad and the trigger units reset, before receiving further numbers, by pulses applied via clear units 42, 48. Each unit 32 and gate 34 may comprise a gas-filled triode and rectifier circuit as described in Specification 786,342, [Group XL (c)]. Alternatively, pentode gages may be used. A similar apparatus for transmitting numbers between the output of the computer and a card punch is described. Reference is made also to input from perforated or magnetic tape and output to a typewriter.