baber/WOPTO huggingface dataset:
Patent GB-541654-A (GB)
Title: Improvements in or relating to re-sealing devices for envelopes
IPC: B65D27/28
Filed: 1940-05-25
Abstract: 541,654. Envelopes. POWER, R. F. May 25, 1940, No. 9232. [Class 146 (ii)] A re-sealing device for an envelope comprises a strip of gummed paper with a fold 10 and a line 12 of perforations on each side of the fold, forming two flaps 13 for securing to opposite faces of the envelope, the parts between fold 10 and lines 12 being secured together by gum, staples, &c. One flap may be extended as 13a to provide space for the stamp and address and to obliterate the old stamp and address. To prevent mutilation of the enclosures, the centre of the line of perforations may be slit to receive a gummed strip. The lines of perforations may be staggered and stop short of the edges. To facilitate re-use, a window envelope may have an enclosure comprising a card having a different address on each face visible through the window. For a tuck-in envelope, the flap may be left ungummed. The sealing strips may also be used for closing a folded sheet of notepaper. Reference has been directed by the Comptroller to Specification 133,837, [Class 146 (ii)].
Patent GB-1006097-A (GB)
Title: Improvements in or relating to electrical immersion heating elements
Inventor: BYFORD GEORGE PLEDGER
IPC: H05B3/06
Filed: 1962-03-12
Abstract: 1,006,097. Two-part couplings. ASSOCIATED ELECTRICAL INDUSTRIES Ltd. Oct. 9, 1962 [March 12, 1962], No. 9437/62. Heading H2E. An electric heating element provided with a non-reversible earthed three-pin connector as described in Specification 1,005,206, is modified so that the ends of the limbs of the T-shaped earth pin, which is made of phosphor-bronze, are made to bear resiliently against the metal body or a conductive member in contact with the body. The insulated contact-carrying block is made of two discs 7 and 7c which are held in the body 1 by a ring 22, and the pins 9 and 11 are moulded into disc 7c and are a loose fit in disc 7. Pin 13 has lateral projections, but these can be omitted, in which case the pin is push-fitted in a prepared hole in the moulded disc 7. Pins 9 and 11 can also be provided with lateral projections or be push-fitted in the disc 7c.
Patent GB-387868-A (GB)
Title: Improvements in or relating to boilers
IPC: F24H9/18
Filed: 1932-04-02
Abstract: 387,868. Sectional-boiler furnaces. STREBELWERK GES. MANNHEIM, 62, Hansa Strasse, Mannheim, Germany. April 2, 1932, No. 9505. Convention date, April 4, 1931. [Class 51 (i).] The grate of a sectional boiler is formed of closed water channels b disposed side by side to form a hollow block supported independently of the lateral sections a, a<1> of the boiler, the space h within the block forming an air duct and the sides of the block forming inclined grates. The sections b are of triangular form corresponding in depth to the boiler sections a, a<1> and are connected together and to the water spaces of the end sections of the boiler by nipples c, c<1>. Air for combustion enters a duct i beneath the grate through a flap in the end wall of the boiler and passes between the lower parts f of the grate sections to the duct h enclosed by the sections, and thence to the fuel which is supported upon the inclined sides. Additional air enters through apertures n in the boiler sections, is heated in passages p below the waste gas flues o and issues to the combustion chambers q above the inclined grates. To vary the depth of the fuel layer plates m suspended at r on the end boiler sections may be adjusted. The fuel falls at l on to lateral grates k in the duct i. The grate sections bare supported by a girder e and held together by anchor bars d.
Patent GB-651654-A (GB)
Title: Improvements in or relating to couplings between two-wheeled or multi-wheeled trailers and motive units
IPC: B62D53/08
Filed: 1949-03-31
Abstract: 651,654. Fifth-wheel couplings for vehicles; rest bars. UNITED DAIRIES, Ltd., and UNITED DAIRIES (LONDON), Ltd., and CHALK, H. A. March 31, 1949, No. 9509/48. [Classes 103(v) and 108(ii)] In a coupling between a two-wheeled or multi-wheeled semi-trailer and a motive unit of the kind which is provided with a retractable support and so arranged that initial coupling movement lifts the front of the trailer and the support and the final movement rocks the coupling while the initial separating movement permits the support to move downwardly just clear of the ground and the final movement lowers the front of the trailer, the retractable support is guided to move as a whole in a fore and aft direction on the semi-trailer and a part of the support is arranged to be engaged by an abutment on the motive unit when the front part of the semi-trailer has been elevated by the coupling movement. Fig. 1 shows a support comprising two tubular members 18 braced by rods 26 and carrying feet 43 (or alternatively small wheels). Two tubular members 11 may telescope into members 18 to which they are connected by spring-loaded toggles comprising links 23, 24 pivoted about, and joined by, a cross-bar 25. Sockets 12 on members 11 are slidable, against a spring 17, on members 14 carried by a turntable 15. On backing the motive unit toward the trailer, flanged wheels 38 at the ends of a beam 37 mounted on the turntable 15 engage ramps 39, Fig. 4, on the motive unit and lift the trailer. An arm 36 then engages a roller 35 to rotate a spring-loaded bell-crank lever, one arm 31 of which contacts the bar 25 and moves the toggles through their dead centre positions against the spring 26. As the roller 35 ascends the cantilever 36 it telescopes the members 18 and 11. During the final movement of the rollers 38 to the position in which a part 40 is forced past a spring-loaded catch 41 to complete the coupling, an abutment (not shown), engages and moves the struts 11 to the right and clear' of the differential casing 42. In a further embodiment shown in Fig. 8, the members 11, 18 are urged apart by springs 44 and the toggle links 23, 24 are operated by plates 49 which carry rollers 57. An abutment 63 on the motive unit engages the members 11 to slide them along rods 14 and cause the rollers 57 to ride up the rails 56 during coupling of the trailer. Initial movement of the plates 49- causes cam surfaces 60 formed thereon to engage projections 59 on links 24 and move the toggle out of the locked position. On further movement the pivot pins 53 engage the bottom of slots 51 and the plates 48 are lifted and hence the members 18 attached thereto. The toggles are forced into the locked position, when the final extension of members 11 and 18 by the spring 44 occurs during uncoupling, by the co-action of projections 61 and 62 on the links 23 and plates 49 respectively. The plates 49 may be connected to, a cable operated by the driver instead of being raised by the rollers 57.
Patent GB-622872-A (GB)
Title: Improvements in continuously operating mechanical elevators for pulverulent and the like bulk material
IPC: B65G47/00
Filed: 1947-04-10
Abstract: 622,872. Elevators. SOC. ANON. DIEBOLD & CIE. April 10, 1947, No. 9526. Convention date, Feb. 22, 1945. [Class 78 (i)] In an elevator of the endless carrier type having containers 2 for lifting pulverulent or granular materials, and in which the lower drum 3 is vertically adjustable to permit tensioning of the carrier, a screen 9 is supported behind the carrier 1 for vertical movement with the drum by means of arms 10 carried by the journals of the drum spindle 5. The screen 9 prevents ingress of pulverulent materials into the casing of the elevator beyond the receiving means and co-operates with a fixed screen 8. A further, sloping screen 16 is provided at the upper end of the elevator to prevent the return of the products to the foot of the elevator. The screens are provided with yieldable brushes 14, 18 which obstruct the passage of the pulverulent materials between the screens and their respective drums.
Patent GB-578644-A (GB)
Title: Improvements in thermostatic mixing valves
IPC: G05D23/13
Filed: 1944-05-18
Abstract: 578,644. Thermostats. GUMMERS, Ltd., and ELLIS, A. E. May 18, 1944, No. 9557. [Class 64 (ii)] [Also in Group]XXIX] The piston valve 28 controlling the admission of hot and cold water into a mixing chamber 12 through ports 33, 34 respectively, is regulated automatically by a thermostat 24 comprising a disc 25 secured against rotation by a pin 31 and carrying radially-disposed thermostat coils 26, the free ends of which engage a screwed sleeve 27 on the valve spindle and so adjust the position of the valve. The initial setting of the thermostat and, therefore, of the valve is controlled by a band-operated spindle 24 having a helical member 23 engaging a slot 29, Fig. 4, in the disc 25. The rotation of the spindle is limited by a stop 37 thereon which coacts with a fixed stop 35, Fig. 2, on the underside of the valve cover 13 and a fixed but adjustable eccentrically -mounted stop 36 carried by a rotatable stud 37a secured to the cover.
Patent GB-402649-A (GB)
Title: Improvements in and relating to recuperators
IPC: C10B5/20
Filed: 1933-03-30
Abstract: 402,649. Regenerators. STEIN & ATKINSON, Ltd., 47, Victoria Street, London. -(Soc. Anon. Fours et Appareils Stein ; 48, Rue la Boetie, Paris.) March 30, 1933, No. 9588. [Class 51 (i).] In order to prevent leakage between the two sets of passages in a recuperator in which the passages are formed in separate tiles and rows of passages for the two fluids are arranged at right angles to one another, joint tiles are arranged parallel to and between the passages 2 of one set of rows to present flat faces which cover the joints 3 between the tiles 1 of the adjacent rows of passages of the other set. As shown in Fig. 3, the joint tiles 6 are of substantially rectangular section. In a modified form, Fig. 4, the tiles of one set of passages are bevelled at the corners as at 7 and joint tiles 8 of triangular section are placed in the angles formed between neighbouring bevelled tiles. The tiles of any passage may be connected by means of spigot joints. In order to produce turbulence, the tiles may be formed interiorly with baffle means such as obliquely disposed ribs 10, Fig. 7, or staggered projecting knobs 11, 11<1>, Fig. 9.
Patent GB-1020474-A (GB)
Title: Improvements in or relating to steam generators
Inventor: HANY HARALD
IPC: F22B21/06
Filed: 1963-03-11
Abstract: 1,020,474. Water-tube steam boilers. HENSCHEL-WERKE A.G. March 11, 1963, No. 9588/63. Heading F4A. A steam generator has a lower annular water chamber and an upper annular evaporation chamber which are spaced apart and interconnected by vertical water tubes 3 which are arranged in contacting or close juxtaposed relationship around a combustion chamber 6 to form the walls of a flue for the combustion gases leaving the combustion chamber. In the form shown, the generator comprises annular water and evaporation chambers connected by three concentric rows of tubes 3 which are enclosed by an inner cylindrical casing 1. An outer casing 4 provides an annular space through which air flows to a burner, combustion gases discharging through a gap 7 in the inner row of water tubes, and flowing between the rows as indicated by the arrows, to an outlet 10. The flue crosssectional area may decrease in the latter part of the combustion gas path, so that there is no decrease in the combustion gas velocity as a result of the gas cooling. The boiler may have a circular or a rectangular horizontal crosssection and the water tubes may be arranged to form a spiral row inside the outer casing. In a further modification, the water tubes are reduced in diameter at their ends, which are welded to the upper and lower annular chambers, whilst this reduction may be extended some distance from the alternative tops and bottoms of adjacent walls to provide a vertical sinuous flue. A ceramic material may fill spaces between adjacent water tubes in any one wall.
Patent GB-1385691-A (GB)
Title: Dc static switch circuit
IPC: H02H9/04
Filed: 1972-03-02
Abstract: 1385691 Transistor swtiching circuits WESTINGHOUSE ELECTRIC CORP 2 March 1972 [15 March 1971] 9699/72 Heading H3T [Also in Division G3] In apparatus to control the application of a direct voltage source 12 to a load 14 having a first static switching and amplifying device Q1 connected between the source 12 and the load 14 and means 28, 15 for driving the first device Q1 to a conductive level determined by the load current having at the source 12, a power sharing circuit 44 comprising at least one additional static switching and amplifying device Q2, Q3 and at least one resistive element R6, R7 having a resistive impedance greater than the load resistance is connected in parallel with the first device Q1 and is operative to dissipate power at a first, low level while the voltage of the source 12 is below a predetermined level and to dissipate power at a second higher level when the voltage of the source 12 is above the predetermined level. Means is provided to hold the additional device Q2, Q3 in a saturated, fully conductive condition when the voltage is below the predetermined value and to bring the additional device Q2, Q3 out of saturation at the predetermined voltage level. The on-off condition of a power switching transistor Q1 is controlled via a transistor driver circuit 15 by a on-off control circuit 16. In the on state of transistor Q1, the transistors Q2 and Q3 are saturated so as to fully conduct and the conduction of Q1 is controlled by a current limit controller 28 which compares the load current obtained from a resistor R1 with a reference value set by a resistor R2 in an operational amplifier Z1 which can be an integrated circuit. An over voltage of the direct voltage source 12 above the predeter. mined value as determined by a Zener diode CR3 and a resistor R7, cause the transistors Q2 and Q3 to come out of saturation so as to limit the current through the load 14 to a constant value (F, Fig. 5, not shown). The controller 28 also operates to reduce the conduction of transistor Q1 so as to reduce the power dissipation in this transistor.
Patent GB-824407-A (GB)
Title: Improvements relating to shock-absorbers
Inventor: FREYLER ADALBERT
IPC: F16F7/09
Filed: 1957-03-25
Abstract: 824,407. Shock absorbers. ALBERT, P. March 25, 1957, No. 9735/57. Class 108(3) A telescopic shock absorber comprises a cylinder 1 in which is movable a member in the form of a number of resilient plastic discs 4, the outer edges of which bear against the inner surface of the cylinder 1, and between which are interposed thin metal discs 5, the outer diameter of each of which is less than the outer diameter of the discs 4. As shown, the diameters of the discs 5 progressively decrease towards the upper end of the piston rod. In operation, on downward movement of the piston rod 3, the discs 4 flex and offer less resistance to movement than when the piston rod 3 moves in the upward direction. In a modification (Figs. 1 and 2, not shown), the discs 5 are all of the same diameter. The discs 5 may be slit radially either from the inner or the outer periphery. The discs 4 may be made of polyesters and polyisocyanates.
Patent GB-526913-A (GB)
Title: Improvements in electric power transmission
IPC: H02J3/06
Filed: 1939-03-29
Abstract: 526,913. Electricity supply. TAYLOR, A. M. March 29, 1939, No. 9743. [Class 38 (iv)] Transmission line arrangements.-To maintain stability when a fault develops in one side of a duplicate three-phase transmission line, emergency boosting transformer, normally inert, is arranged to inject a leading quadrature current before the circuit breakers open on the fault. The primary winding of such a booster EB2 is connected across reactance R2, which keeps up the two bar potential when a fault 5 develops on the link II and the effect of which, under normal load, is eliminated by a quadrature booster RCB2 energized by the line potential. The booster EB2 injects into the sound line I a leading current immediately the fault S brings the line potential to earth, this current cancelling the lag due to the reactance Rl and the booster RCB1, so that before the circuit breaker has opened on the fault synchronizing current is free to flow. Auxiliary transformers CT1, CT2 cancel the e.m.f. induced in the primary windings of the emergency boosters EB1, EB2 by the load current in their secondary windings. The invention applies to long transmission lines with distributed quadrature " steady-state " boosters and to shorter lines wherein synchronous condensers are distributed along the line and employed in place of the reactance-cancelling boosters RCB1, RCB2.
Patent GB-890356-A (GB)
Title: Improvements in or relating to cathode ray tube display arrangements
Inventor: CALLICK ERIC BRIAN BUTLER
IPC: H01J31/18
Filed: 1960-03-21
Abstract: 890,356. Cathode-ray tubes. ENGLISH ELECTRIC VALVE CO. Ltd. Dec. 6, 1960 [March 21, 1960], No. 9845/60. Drawings to Specification. Class 39(1) [Also in Group XL(c)] The scanning beam of a cathode-ray display tube or direct-viewing storage tube is alternately switched between an upper limit of intensity and a lower limit, e.g. zero, at a cyclic frequency co-related with the speed of scanning such that the beam is partly at its upper limit of intensity and partly at its lower limit in each period during which it moves through its own width in the direction of scanning. The average intensity of the beam spot is thereby rendered independent of scanning speed. Modulation is effected by controlling the length of the part of each period during which the beam is of larger intensity, i.e. by pulse width modulation by the signal of rectangular pulses fed to the control electrode. The frequency of the rectangular pulses is controlled by the line deflection saw tooth generator and the control electrode is biased to a valve corresponding to peak brightness.
Patent GB-1254582-A (GB)
Title: Tellerium-lead modified chromium dioxide
IPC: G11B5/706
Filed: 1969-02-24
Abstract: 1,254,582. Modified chromium dioxide. MATSUSHITA ELECTRIC INDUSTRIAL CO. Ltd. 24 Feb., 1969 [23 Feb., 1968; 28 Feb., 1968], No. 9868/69. Heading H1H. [Also in Division C1] Ferromagnetic chromium dioxide includes in the crystal structure as an integral part thereof 0À01-10 atomic per cent of lead, 0À01-20 atomic per cent of tellurium and 99À98-70 atomic per cent of chromium based on the total of the 3 kinds of metal atoms. The material may be made by mixing chromium trioxide, a tellurium compound and a lead compound in an atomic percentage of 70-99À98% chromium, 0À01-20% tellurium and 0À01-10% lead, and heating the mixture in presence of a solution or compound containing ammonium ions, at 280-480 C. and 50-1000 atmospheres. When the chromium dioxide contains 0À01-0À5 and 0À01-3À0 atomic per cents of lead and tellurium respectively, the particles are rutile, acicular, 0À1-2À0 Á in length, 0À01-0À4 Á in width, the ratio of length to width being 4 : 1 to 30 : 1. In examples, the ferromagnetic material is made by heating chromium trioxide with lead monoxide and telluric acid, either without ammonium ions, or in presence of ammonia solution or ammonium chromate. In one example, an oxygen atmosphere is used. The products have coercive force (H c ) = 240-545 oersteds, residual magnetization (B r ) = 1500-2400 gauss and maximum magnetization (4# I m ) = 3000-4800 gauss.
Patent GB-1184061-A (GB)
Title: Improvements relating to Boilers
Inventor: HAWKINS JAMES IRVING
IPC: B65G53/00
Filed: 1966-03-07
Abstract: 1184061 Pneumatic conveyers COCHRAN & CO ANNAN Ltd 6 March 1967 [7 March 1966] 9902/66 Headings C5G G10 and G11 Apparatus for pneumatically feeding magnesite powder to the combustion zone of a boiler comprises a closed hopper in the base of which there is provided a pipe 18 leading from a fan and pressure regulator 32 to air outlets 24 and an outlet pipe 22. Located above the air outlets 24 there is a pipe 25 which leads to a discharge pipe 27 and which is provided with a slidable sleeve 28 for varying the distance between the end of the pipe 25 and the base 30 of the hopper. The pressure regulator comprises a diaphragm 34 controlling a valve 35 between the inlet 37 and the outlet 38. The chamber above the diaphragm is connected by a pipe 40 either to atmosphere or to the boiler gas passes. In the former case, the air-pressure in the pipe 18 is substantially constant and in the latter case the regulator is loaded by a back pressure from the boiler whereby the air-flow is dependent on this pressure and therefore, on the rate of fuel burned in the boiler. An electromagnetic vibrator 41 is provided on the hopper and a switch 42 serves as a level indicator which may cause the boiler to shut down when the powder falls below a predetermined level.
Patent GB-1001225-A (GB)
Title: Manufacture of seamless knitted non-run hosiery fabric
IPC: A61K38/57
Filed: 1963-03-13
Abstract: 1,001,225. Knitting. VAN RAALTE CO. Inc. March 13, 1963 [May 7, 1962], No. 9912/63. Headings D1C and D1K. Circular stocking fabric knitted from two yarns S, M, consists entirely of tuck stitches each consisting of a held loop formed by both yarns and a tuck loop formed by one yarn the other yarn forming a float behind the stitch and modified tuck stitches where the tuck loop is knitted through one of the held loops. During knitting, yarn M is fed at a low position to all needles N and yarn S is fed at a higher position to alternate needles. Needles N have forwardly inclined hooks and, associated with each needle are pattern and auxiliary jacks P and J. A pattern drum operates levers 40 which select the jacks P to be elevated by cam 41, the selection being reversed with each rotation of the needle cylinder. Thus the needles are divided into two groups which after passing the yarn feed at two levels, the needles at the higher level are lowered by cam 30 and all the needles pass under stitch cam 33 but only those that have been raised to clearing level knit. The fabric thus knitted should produce only the normal tuck stitches but the modified stitches arise because yarn M is slack compared with yarn S and springy mono filament yarns are used. The yarns may be of 7 and 10 denier nylon respectively or both may be of 7 denier nylon.
Patent GB-314783-A (GB)
Title: Improvements in or relating to the manufacture of thin rubber sheet material
IPC: D06N3/10
Filed: 1928-04-02
Abstract: 314,783. Schidrowitz, P., and Burke, D. J. April 2, 1928. Indiarubber compositions.-Thin rubber sheets for use as artificial leather are made from a mix comprising a finely divided reinforcing agent such as gas black, colloidal clay or light carbonate of magnesia in the proportion of 0.5 to 1 volume to 1 volume of rubber and a rapeseed oil or other factice, in the proportion of 0.3 to 0.7 volumes to 1 volume of reinforcing agent. From 2 to 5 volumes per 100 volumes of rubber of an ordinary softener such as mineral rubber may be added also. Sulphur and accelerators with or without zinc oxide, are included, good results being obtained with litharge (1 to 2 volumes to 100 volumes of rubber). The product is vulcanized at a temperature corresponding to between 40 and 60 lbs of steam. The proportions of the ingredients and the conditions of vulcanization are such that the product has a definite elongation, slope and breaking load. After the product has been vulcanized it is submitted to the action of dry heat at 155‹ to 160‹F until it reaches a pre-determined standard of hardness. The sheet may be embossed, e.g. during calendering, it being unnecessary to maintain the embossing medium in contact with the surface during vulcanization.