baber/WOPTO huggingface dataset:
Patent GB-1319859-A (GB)
Title: Feedback amplifier circuit
Inventor: ANDREWS ROLAND E
IPC: H03F3/26
Filed: 1970-07-09
Abstract: 1319859 Feedback amplifiers; sawtooth wave generators TEKTRONIX Inc 9 July 1970 [24 July 1969] 33290/70 Heading H3T A cascode transistor amplifier has negative feedback from the output to the input via an emitter follower and a series resistor. Fig. 2 shows the cascode amplifier feeding sawtooth waves to the deflection electrode 18 of a cathoderay tube. 32 is a constant current load transistor and 24 is a feedback amplifier included to reduce the load otherwise provided by resistor 26 on the output circuit so that the capacitance of the deflection electrodes can be more quickly charged. Fig. 3 is a similar circuit in which the first stage 10 of the cascode is coupled to the series transistors for high frequencies via a capacitor 50 and for lower frequencies via a common base stage 40. Capacitor 56 provides drive for the constant current transistor 32 to cut it off during the negative slope and to enhance its current during the positive slope. The opposite polarity drive for the other deflection plate may be obtained from a similar circuit (Fig. 4, not shown) using a transistor (10<SP>1</SP>) of opposite conductivity type and using the upper transistor (54<SP>1</SP>) as the main input stage of the cascode. Fig. 5 (not shown) illustrates the combination of circuits similar to Figs. 3 and 4. It includes diodes (62, 64) biased from a potentiometer (70) to equalize and adjust the bias to the input stages (10, 10<SP>1</SP>). The diodes are shunted by a capacitor (66) to ensure cancellation of the transients to the input transistors (10, 10<SP>1</SP>) and output transistors (24, 24<SP>1</SP>). A capacitor (72) across the feedback resistor adjusts the feedback phase, capacitors (76, 78, 82) across voltage dividers and an adjustable resistor (80) in the voltage divider optimize the high frequency performance.
Patent GB-446003-A (GB)
Title: Improvements in or relating to vestibules, more particularly for railway vehicles
IPC: B61D17/22
Filed: 1935-12-02
Abstract: 446,003. Communication platforms between vehicles. BUGATTI, E., Molsheim, Bas-Rhin, France. Dec. 2, 1935, No. 33360. Convention date, Dec. 4, 1934. [Class 103 (iv)] A vestibule connection particularly for railway vehicles comprises a belt which overlaps internally or externally the adjacent ends of a pair of vehicles and is connected thereto by elastic fastening means such as one or more elastic cables, bands, or ropes, coiled springs, &c. preferably mounted with an initial tension. The belt may be made of material of low elasticity such as leather, cloth, rubberized cloth, &c. or of an elastic material such as rubber, undue deformation being prevented in the latter case by rigid or unexpansible rods, cables, ropes, &c. Fig. 1 shows one method of connecting the belt 3 to vehicles 1, 2 in which cables &c. 6, 7 are secured to attachment members 4, 5 and 8, 9 such as rings, hooks, buttons, &c. on the belt and vehicles respectively. Other methods include : (a) replacing the cables &c. 6, 7, Fig. 1, by springs ; (b) connecting the members 8, 9, Fig. 1, to the vehicles by springs ; (c) connecting the belt and vehicles directly by a series of separate horizontal springs ; (d) passing the cables &c. alternately over guides such as pulleys. Fig. 14 shows a method utilizing three elastic fastening elements 28, 29, 30, the element 30 having a tensioning-device 31. As shown in Figs. 16, 17 the fastening elements pass around pulleys 32 or 33 disposed adjacent stiffening rods 34 in the belt. Fig. 18 shows a belt in two parts 35, 36 connected by elastic elements 37 which may be arranged to come into operation only when the end fastenings of the belt are under maximum tension. Fig. 20 shows in sectional plan view rods 42 each attached at one end to the belt 3, passing through guides 43 on the vehicles, and carrying at their free ends pulleys 40. In another construction the vehicles have double walls between which the belt is guided. When pulleys are used they may be mounted on spring-pressed rods.
Patent GB-366155-A (GB)
Title: Improvements in or relating to box forming machines
IPC: B31B50/00
Filed: 1930-11-06
Abstract: 366,155. Making boxes. VICKERSARMSTRONGS, Ltd., Vickers House, Broadway, Westminster. - (Assignees of Stelling, F. R. ; Wellington Street, Waterloo, Sydney, Australia.) Nov. 6, 1930, No. 33402. Convention date, Nov. 6, 1929. [Class 18.] A machine for joining a flanged bottom B, Fig. 5, to the sides A of boxes of cardboard &c. by means of an adhesive strip C comprises a frame in which are rotatably mounted a block 32, Fig. 4, to hold the sides of the box and a plate 33 to hold the bottom against the sides, and two rollers 28, 29 with an automatically variable mutual spacing which press the adhesive strip into position and are so mounted that the roller 28 bears on the sides of the box and the adjacent surface of the flange on the bottom and the roller 29 bears on the opposite surface of the flange. The block 32 is threaded on a spindle 6 and adjusted in position by a collar 9 ; and the spindle is driven from a shaft 11 through a clutch 8, 10 the pinion 10 of which is normally held retracted by a spring but engages with the gear 8 on depression of a foot lever. The plate 33 is mounted on a spindle 15 which rotates due to its contact with the work and the spindle is spring-pressed towards the block 32, but it can be withdrawn by a foot lever against the action of a spring 16. The rollers also are rotated by their engagement with the work and are mounted in a head casting 23 on the end of an arm or arms pivoted to a bracket on the frame 7 ; the roller 29 has a chamfered edge and it is spring-pressed towards the roller 28, a hand lever 31 being operable to separate the two. A trip bar is provided by which the arm carrying the rollers 28, 29 can be lowered on to the work or raised from it against the action of a spring. The invention is applicable to fancy-shaped boxes such as circular, oval, crescent-shaped, kidneyshaped, or other curved forms with no acute re-entrant parts ; and the lid may be similar to the body part of the box.
Patent GB-342701-A (GB)
Title: Improvements in and relating to gaseous reactions taking place in the presence of steam or water vapour
IPC: B01J19/00
Filed: 1929-11-04
Abstract: <PICT:0342701/III/1> In carrying out a gaseous catalytic reaction in the presence of steam or water vapour, and involving the use of a heat exchanger, the water condensed from the saturated and hot products from the reaction in passage through the exchanger is used to saturate the cold and unsaturated gases which are being heated in the exchanger prior to the reaction.  The water flows in the same direction as the gases into which it is evaporated or from which it is condensed.  Cold unsaturated gas enters the plate heat exchanger 10 at the point 12 and passes downward while the hot saturated gas enters at point 13 and travels upward.  The water condensed in each section 11 traversed by the saturated and hot gas is withdrawn by connections 14 and admitted to the section below traversed by the cold unsaturated gas; thus the water condensed from the hot saturated gas in one stage is evaporated into the cold unsaturated gas in that stage for which the limits of temperature are nearest to those of the first stage.
Patent GB-954567-A (GB)
Title: Manufacture of thermally insulating light moulded articles
IPC: C04B35/536
Filed: 1961-09-19
Abstract: A method of manufacturing thermally insulating light moulded articles comprises adding to the matrix, as the pore-forming component, expanded graphite and thereafter processing the mixture to form a thermally insulating light moulded article. Suitable matrix material is a hydraulically bonding material, for example Portland cement, alumina cement, magnesia cement or stabilized burnt dolomite.  The matrix may also comprise a non-hydraulically bonding material chosen from fireclay, aluminarich fireclay, corundum, silica and mixtures thereof, in admixture with a bonding agent, for example waterglass, sulphite waste liquor, dextrin and mixtures thereof.  A further matrix material comprises a carbonaceous material, for example petroleum coke and a carbonaceous bonding agent, for example tar, bitumen and mixtures thereof. Stabilized burnt dolomite is obtained by burning dolomite to which has been added sufficient silicic acid to convert the calcium oxide content of the dolomite into di- and/or tri-calcium silicate. In examples there are prepared mixtures of (1) stabilized hydraulically bonding burnt dolomite, expanded graphite and water; (2) fireclay, expanded graphite and waterglass solution; (3) ground petroleum coke, expanded graphite and soft pitch.  The mixtures are put into moulds and set to form bricks. To increase the hardness the bricks are heated at 1300 DEG  to 1450 DEG  C. while embedded in carbon powder to prevent oxidation.ALSO:A method of manufacturing thermally insulating light moulded articles comprises adding to the matrix, as the pore forming component, expanded graphite and thereafter processing the mixture to form a thermally insulating light moulded article.  Suitable matrix material is a hydraulically bonding material, for example, Portland cement, alumina cement, magnesia cement or stabilized burnt dolomite. The matrix may also comprise a non-hydraulically bonding material chosen from five clay, alumina-rich fire clay, corundum, silica and mixtures thereof, in admixture with a bonding agent, for example waterglass, sulphite waste liquor, dextrin and mixtures thereof, a further matrix material comprises a carbonaceous material, for example, petroleum coke, and a carbonaceous bonding agent, for example, tar, bitumen and mixtures thereof.  Stabilized burnt dolomite is obtained by burning dolomite to which has been added sufficient silicic acid to convert the calcium oxide content of the dolomite into di- and/or tricalcium silicate. In examples these are prepared mixtures of (1) stabilized hydraulically bonding burnt dolomite, expanded graphite and water; (2) fire clay, expanded graphite and waterglass solution; (3) ground petroleum coke, expanded graphite and soft pitch.  The mixtures are put into moulds and set to form bricks. To increase the hardness the bricks are heated at 1300 DEG  to 1450 DEG C. while embedded in carbon powder to prevent oxidation.
Patent GB-1270553-A (GB)
Title: Improvements relating to flow meter register assemblies
IPC: G06M1/10
Filed: 1969-07-03
Abstract: 1,270,553. Counting apparatus. ROCKWELL MFG. CO. 3 July, 1969 [5 July, 1968], No. 33623/69. Heading G4D. A step-by-step drive mechanism coupling a continuously rotating shaft 36, Figs. 3, 4, of a fluid flow meter to a counter 54 having carry mechanism 27, comprises a worm 42 splined 44 to the shaft, the worm having a helical shaped cam-face 48 at its bottom end which bears on a cam follower 50, the pitch of the cam being such so that as the shaft 36 rotates, the worm rotates and rises on its splines and causes no rotation of the counter 54 until the end of a revolution of the shaft when the end of the cam helix is reached and the worm is abruptly jerked back to its lowest position thereby advancing the counter by one step. The cam follower 50 is resiliently mounted so that if the shaft 36 is rotated backwards, it can be deflected by the vertical shoulder 58 of the cam. Each denomination of the counter includes a coded scale enabling remote electrical read-out by a plug-in device carried by a meter reader, see Specification 1,270,554 (Division G4).
Patent GB-832736-A (GB)
Title: Improvements in pressure moulds
Inventor: SEDGWICK LEONARD
IPC: B29C33/02
Filed: 1957-10-29
Abstract: 832,736. Moulding sealing rings. BULWELL PRECISION ENGINEERS Ltd. Oct. 28,1958 [Oct. 29, 1957], No. 33643/57. Class 87(2). Rubber sealing rings are moulded under pressure in a two-part mould comprising a pair of thick circular plates 1, 2 with complementary half-moulds 3, 4 in their opposed surfaces. A taper dowel 9 projects upwards from the lower plate along the central axis and is engaged by a tapered socket 10 projecting downwards from the upper plate. The dowel 9 may be protected by a spigot 11 of reinforced plastic. A tapered wedge 12 on the outer periphery of the upper plate 1 is adapted to fit in a tapered slot between members 15, 16 on the periphery of the lower plate 2 variation in radial expansion between the plates thus does not result in distortion. Minor modifications in the design and location of the dowels and wedges are mentioned.
Patent GB-853130-A (GB)
Title: New or improved restraining means for doors and like hinged articles
IPC: E05C17/44
Filed: 1958-10-29
Abstract: 853,130. Door checks. DU TOIT, A. S. J. Oct. 29, 1958 [Nov. 8, 1957], No. 34666/58. Class 65(1). A roller 9 frictionally rotatable in a support member 1 attached near the bottom of a door 3 is resiliently urged into peripheral contact with the floor 20 and rotates when the door is moved to restrain its movement. The axis of the roller is substantially horizontal and preferably converges with the plane of the door towards the hinge axis of the latter. The roller is mounted on a bolt 10 carried by the arms 7, 8 of the support member which provide friction surfaces co-operating with the flanged ends 15, 16, of bushes 13, 14, located in the axial bore of the roller. Projections 18 on the flanges penetrate the material of the roller to secure the bushes, and a space 17 between the bushes permits the roller to contract slightly when the wing nut 11 is tightened to adjust the friction. A tongue 19 on the arm 8 prevents relative rotation between the supporting member and the bolt. The support member, which is formed of spring steel, has strengthening ribs 4 stamped therein, and a length of wire 12 (Fig. 3) is located in the hollow of the rib nearest the edge of the door so that the roller axis is set at the required angle with the plane of the door. Means such as toggle levers 44, 46, may be provided for retracting the roller to an inoperative position. In a modification the support member is formed from a substantially U-shaped piece of spring wire, the arms of which are bent at their outer ends to support the bolt 10 and are coiled intermediate their ends to urge the roller against the floor. In a further modification the support member comprises two telescopically arranged sections urged apart by a spring. The roller may be made of rubber, or a plastic material covered with a rubber sleeve.
Patent GB-983768-A (GB)
Title: Improvements in means for adjusting the alignment of the roll passes of rolling-milltrains to the rolling line
IPC: B21B39/16
Filed: 1962-09-03
Abstract: 983,768. Continuous rolling. SCHLOEMANN A.G. Sept. 3, 1962 [Sept. 8, 19611, No. 33678/62. Heading B3M. The roll passes of a rolling mill are aligned with the rolling line of the mill by moving each roll stand, and thus the roll passes of the stand, transversely of the rolling line, abutments being provided to locate the stands. A stand 1 of a continuous rod mill is laterally displaceable by means of a traction bar 25 while a beam 11, on which are mounted guides 12 in alignment with rolling lines of the mill, is held stationary. Before movement of the stand in order to align appropriate roll passes with the guides lever 9 are rotated to unclamp the beam 11 from the stand. The abutment, in the form of a spring- urged arm 15 having a recess for an extension of the beam 11, is itself finely adjustable by means of a screwed rod 21. The abutment may alternatively be a fixed stanchion housing a permanent magnet to retain the beam 11 in position. A pointer and scale on the stand and beam give an indication of the position of the stand.
Patent GB-927234-A (GB)
Title: Improvements in nickel chromium alloys
Inventor: COOK REGINALD MASSEY
IPC: C22C19/05
Filed: 1958-10-21
Abstract: Alloys for high-temperature service, e.g. gas turbine blades, containing in percentage by weight:-  .Cr.10- 18 .Co.15 - 25 .Mo.3 - 9 .B.0.001 - 0.010 .Zr.0.05 - 0.3 .C.0.10 - 0.3 <TABS:0927234/II/1> may be either air or vacuum melted, and are then held at 1400-1600 DEG  C. for at least five minutes under a pressure of not more than 0.1 mm. of mercury before casting.  The alloys may be solution treated in the range 1150-1250 DEG  C. followed by ageing in the range 700-1100 DEG  C.  Optimum properties with alloys containing up to 15% of chromium are obtained when the ageing temperature is correlated with chromium content according to the expression [1050-50(15-Cr%)] DEG C; alloys with more than 15% of p  chromium are preferably aged at temperatures between 1050 DEG  and 1100 DEG  C. Specification 857,299 is referred to.
Patent GB-430297-A (GB)
Title: Improvements in or relating to telegraph repeater circuits
IPC: H04L25/20
Filed: 1934-11-23
Abstract: 430,297. Code telegraphy. STANDARD TELEPHONES & CABLES, Ltd., 63, Aldwych, London.-(Assignees of Herman, J. ; 837, Dorian Road, Westfield, Union, New Jersey, U.S.A.) Nov. 23, 1934, No. 33711. Convention date, July 5. [Class 40 (iii)] In a two-way repeater, telegraph signals in both directions of traffic are regenerated by the same apparatus 7 whose output contact 14<a> can be switched into circuit with either the E or the W line, while its input circuit 10 and the direction-control relay 4 are continuously accessible to both line-magnet armatures 1<a>, 2<a>. The neutral relays 1, 2 are differentially wound and have line balances N so that the relay on the outgoing side is unaffected by signals. A battery B applies marking potential to the incoming line in accordance with half-duplex double-current practice. The repeater as shown is ready for W-E transmission, the line W receiving marking (idle) polarity from battery B while the line E receives it from the regenerator contact 14<a>. Signals arriving at relay 1 do not affect relays 6 and 5, since winding 6 is connected from earth to positive and winding 5 is connected to positive at both ends, whatever the position of armature 1<a>. Signals from line W are applied to the input circuit 10 of the regenerative device 7, which is shown schematically only, and are passed on with a slight delay through contact 14<a> to line E. When, however, signals are to be sent in the E-W direction, line E is interrupted at the distant end, (not shown), and armature 2a moves to its spacing contact, applying negative potential to the polarized relay 6 via resistance 20. Armature 6<a> thereupon moves to its right-hand (spacing) contact and holds on, energizing relay 5 which reverses the connections of the lines with the central battery B and the regenerator armature 14<a>. The circuits are so dimensioned that when both lines send a break signal simultaneously the armature 6<a> remains in whichever position it happens to occupy. Polarized relay 6 may have separate operating and locking windings, or may be replaced by a neutral relay with a locking circuit, or relays 5 and 6 may be replaced by a simple relay with multiple contacts.
Patent GB-1361385-A (GB)
Title: Manufacture of articles of composite construction
IPC: E06B3/70
Filed: 1971-10-11
Abstract: 1361385 Door frames CROMPTON PLASTICS Ltd 11 Oct 1971 [11 July 1970] 33759/70 Heading E1J [Also in Division B5] An article, e.g. a door frame, is moulded by placing frame members 10-15 in a twopart mould 17, 20 and injecting a synthetic plastics foam material which surrounds the greater part of at least some of the members and fills the gaps between them. Apertures 26, 27 are provided for glass panels 22 held by a moulded flange 25 and beading 28. A hinge 35 may be moulded in position. (For Figures see next page)
Patent GB-868602-A (GB)
Title: Heating device for the melting of rods or tubes made of glass, or the like
IPC: C03B37/029
Filed: 1958-10-22
Abstract: 868,602. Electric drawing furnaces. SCHUL LER, W. H. W. Oct. 22, 1958 [Oct. 26, 1957], No. 33771/58. Class 39(3). [Also in Group' XII] A device for producing fibres from glass rods or tubes comprises heating compartments 9 for rows of rods &c. 4 extending through a guide member 5 and disposed between electric radiating elements 2, 2a seated on support members 3, 3a. The assembly is completed by a ceramic lining 1 and a sheet metal framework 12. The elements 2, 2a, e.g. of chromium-nickel alloy, may be in the form of bars or may be spirals positioned on quartz glass rods 11, and the support members 3, 3a may also be positioned by rods 10. The current supplied to pairs of heating elements may be controlled by variable transformers, Fig. 5 (not shown).
Patent GB-1261036-A (GB)
Title: Battery plate grids
Inventor: ALLEN BRIAN ROBERT
IPC: H01M4/72
Filed: 1968-07-16
Abstract: 1,261,036. Making battery plate grids. JOSEPH LUCAS (INDUSTRIES) Ltd. 25 June, 1969 [16 July, 1968], No. 33786/68. Heading B3A. [Also in Division H1] A method of making a battery plate grid includes forming a plurality of narrow strips 11, interconnecting the strips at one end to define a battery plate connector slug and bending the strips to form a grid of the required shape. The strips 11, which are of lead alloy or dispersion-strengthened lead are extruded side-by-side from a common die. Lead clips 12 are engaged with the bundle -of strips at (predetermined 'spaced points .and the clips are welded to the strips in a welding machine, the strips -being simultaneously welded to one another where they are enclosed by the clip. Alternatively .plane lead plates may be used instead of the clip. The bundle is then severed adjacent each clip and the strips fanned out with the lug in one corner or midway along one side of the fan, the outermost strips 11a, 11b being bent to 90 or 180 degrees respectively to each other. A U-shaped or L-shaped lead member 13, .depending on the location of the lug, is secured to the strips and the projecting portions of the strips trimmed off. 'The connector lug may be formed by joining the strip ends together without the use of a clip and the L or-U-shaped members may be omitted.
Patent GB-282666-A (GB)
Title: Improvements in a mechanical golf instructor and exerciser
IPC: A63B69/36
Filed: 1927-12-15
Abstract: 282,666. Hansen, J. Dec. 23, 1926, [Convention date]. Golf-practising appliances. - A device for practising and teaching golf comprises a pair of substantially circular tracks and a golf-club guide slidable thereon, the tracks being connected at their upper ends. As shown, the outer end of a golf-club shaft 13 is connected by a pivoted hook 12 to a wheeled guide 10 movable around a pair of tracks A, B. The tracks are supported by a framework 1 and are connected at their upper ends by loops 3, 7 so that in making a stroke the guide travels upwardly on the track A, makes a complete circuit of the track B and is returned to the starting point along the track A. The arrangement is such that the hook 12 is slightly nearer to the user on the upstroke than on the downstroke.
Patent GB-521719-A (GB)
Title: Improvements relating to apparatus for the production of electric oscillations
IPC: H03B19/03
Filed: 1938-11-23
Abstract: 521,719. Producing electric oscillations. WESTINGHOUSE BRAKE & SIGNAL CO., Ltd., STEVENS, S. A., and WALKER, A. H. B. Nov. 23, 1938, No. 34095. [Class 40 (v)] Means for producing electric oscillations comprises a tuned oscillatory circuit c supplied with energy through a rectifier b from a source of alternating current which incorporates means a for imparting a negative resistance characteristic thereto. The output which is of a frequency determined by the oscillatory circuit may be obtained at terminals X, Y by inductive coupling with the inductance or from the terminals of the condenser. Alternatively, it may be obtained in the form of a modulation of the alternating current from the source R, S at terminals X<SP>1</SP>, Y<SP>1</SP>. The means a may comprise (1) a pair of inductances, one having a saturated core and being shunted by a condenser, and the other having an unsaturated core, or (2) a series choke having a saturating winding energized by the output of the rectifier.