baber/WOPTO huggingface dataset:
Patent GB-356383-A (GB)
Title: An improvement in or relating to portable fire extinguishers
IPC: A62C13/00
Filed: 1930-07-15
Abstract: 356,383. Fire-extinguishers. GOODALL, J. A., Vulcan Works, Randall Well Street, Bradford, Yorkshire. July 15, 1930, No. 21353. [Class 47 (ii).] In an extinguisher of the kind comprising an axially-movable plunger adapted to pierce a seal or break an acid bottle, the plunger is operated by a cam projection on a rotatable cap on the extinguisher head. As shown, two pressure containers d<1>, d<2> sealed by seals d<4> are arranged in the extinguisher casing a. Piercing plungers e<1> slidable in the head c of the extinguisher are normally held raised by springs e<3> and are adapted to be engaged by a cam projection g<1> on a rotatable cap g. As the cap is rotated, the projection g<1> engages the plungers in turn, first driving them in to piercing position, and then releasing them. The extinguishing medium is delivered to chambers c4 connected by a passage c<5> leading to a nozzle f. More, or less, than two containers may be arranged in the casing, and the nozzle f may be arranged on the cap g. The Provisional Specification describes an arrangement wherein a projection on the cap engages a cam on the plunger.
Patent GB-1089304-A (GB)
Title: Secret coded card system
IPC: G07F7/02
Filed: 1965-05-20
Abstract: 1,089,304. Selective signalling. VEEDER INDUSTRIES Inc. May 20, 1965 [May 28, 1964], No. 21393/65. Headings G4H and G4M. A card which is either metallic and has holes punched in it, or is non-magnetic and has areas of magnetic material thereon to represent information, each hole or magnetic area occurring in one of two positions, is sensed by E-core transformers 20, 30, 40. Windings such as 24, 25 normally produce equal and opposite fluxes in output winding 26, but when an information mark such as a hole 51 is present an output is produced by winding 26, the phase of the output depending on whether the hole is adjacent winding 24 or winding 25. An output of one phase from winding 26 enables AND gate G to operate relay A, whereas an output of the opposite phase enables AND gate H to operate relay B. Similar circuits are provided for the other pairs of hole positions on the card. Contacts of the relays and diodes 84 cause one of leads such as M, N to rise above earth potential, and a corresponding relay 91, 102 operates to supply power to a fuel pump 95 and connect a corresponding counter 97, 103 to a flow meter 98 whereby the amount of fuel dispensed to the customer inserting the card may be registered on the counter corresponding to that customer. The card is covered with opaque material to prevent fraud. In another embodiment, signals from the transformer 20 are used to selectively direct objects bearing coded cards.
Patent GB-638311-A (GB)
Title: Improvements in or relating to therapeutic solutions
IPC: A61K31/44
Filed: 1947-08-06
Abstract: Riboflavin solutions are stabilized to prevent decomposition over a time period of a year or so, and to retain the riboflavin in solution for the same period, by adding nicotinamide to prevent precipitation, and preventing decomposition by the addition of sufficient acidic material to maintain the pH at about 2.6 to 6.6, preferably at about 5 to 6.6.  The acidic material may be another vitamin (e.g. thiamine hydrochloride or pyridoxin hydrochloride), or hydrochloric acid, phosphoric acid, or monosodium dihydrogen phosphate.  Boric acid may also be added to the solution. Detailed examples are given.ALSO:A solution of riboflavin is stabilized by adding nicotinamide to prevent precipitation and maintaining the pH at about 2.6 to 6.6 and comprises also one or more of the following, thiamine hydrochloride, pyridoxine hydrochloride, calcium pentothenate or boric acid.
Patent GB-946874-A (GB)
Title: New steroid compounds, and processes for the preparation thereof
IPC: C07J7/00
Filed: 1961-02-09
Abstract: The invention comprises 1, 2, 11 b -trihydroxyandrost-4-ene-3, 17-dione and a process for the production thereof in which 11b -hydroxyandrosta-1, 4-diene-3, 17-dione is subjected to the action of osmium tetroxide.  The reaction may be effected in pyridene at room temperature.
Patent GB-205611-A (GB)
Title: An improved whisk
IPC: A47J43/07
Filed: 1922-08-05
Abstract: 205,611. Fonteyn, C. Aug. 5, 1922. Whisks.-In a whisk of the kind comprising loops of wire connected to a head, the ends a are secured at points less than a diameter apart, and the loops are secured to each other by passing the wire 1 of one loop under and over the wire of the adjacent loops 2, 5. The loops may be connected by coils of wire, and the whisk may also comprise an additional shorter set of loops similarly arranged and connected.
Patent GB-570478-A (GB)
Title: Improvements in circuits for the demodulation of frequency-modulated signals
IPC: H03D3/08
Filed: 1943-12-23
Abstract: 570,478. Frequency modulation. CARTER, R. O. Dec. 23, 1943, No. 21513. [Class 40 (v)] In a frequency modulation receiver,. the discriminator of the phasing type comprises a band-pass filter terminated by resistances equal in value to the image impedances across its input and output terminals, a quadrature voltage being derived from a reactance element or elements in series with the input resistance. As shown, the filter is fed from the output of a pentode I.F. valve PV, and comprises a halfsection band-pass filter with series components L1, C1 and shunt components L2, C2 coupled by a transformer. A resistance R2 is connected across the filter output terminals which are connected to the cathodes of two diode rectifiers D1, D2. The diode load resistances R3, R4 have an earth connection at their junction, and their outer ends are associated with pushpull L.F. amplifiers. The voltage supplied inductively to the coil L2 is supplemented by a quadrature voltagederived across the condenser C3 and applied to the mid-point of the coil L2. An additional voltage also in quadrature relation to that across the coil L2 may be fed to the mid-point by a coil M2 inductively related to a coil M1 connected in series between the output of the valve PV and the input resistance R1. The best linearity in response is obtained when the quadrature voltage is between 1.5 and 2 times the voltage applied inductively across half the coil L2.
Patent GB-888145-A (GB)
Title: Improvements in display equipment for electrical waveforms
Inventor: CLARK THOMAS HAROLD
IPC: G06F11/32
Filed: 1958-07-04
Abstract: 888,145. Stepping registers. BRITISH TELECOMMUNICATIONS RESEARCH Ltd. July 6, 1959 [July 4, 1958], No. 21522/58. Class 106 (1). A shift register (Fig. 3) providing visual display of digital data received at SX (for example from a magnetic drum) consists of 30 bi-stable units M1-M30, entry into which is controlled by a similar unit ME. When a start signal SS is received ME is set to enable entry and shift of data via the left-hand 2-gates, and M2-M30 are re-set and M1 set by the start pulse. Data received at SX is then shifted through the register (strobe pulses gated by ME by means not shown being used) until M30 is set by the shifted start pulse, ME being then reset at the next strobe pulse so that one more shift occurs, lamps DL then indicating the 30-bit number. Fig. 4 (not shown) illustrates a modification in which two lamps are associated with each unit M1-M30; in a first cycle the register receives the first 30 bits following a start pulse from a magnetic drum and in the next cycle the start pulse only passes through the register first, its arrival at M30 then allowing the second 30 bits to be entered, these cycles being alternately repeated. One set of lamps is operative at each cycle, and thus the first or second set of 30 bits may be selected for visual examination.
Patent GB-651492-A (GB)
Title: Improvements relating to methods of attaching a vitreous surface to a metal or vitreous surface
IPC: C03C27/04
Filed: 1948-08-16
Abstract: 651,492. Discharge lamps. GENERAL ELECTRIC CO., Ltd., and MILES, E. E. Aug. 16, 1948, No. 21589. [Class 39 (i)] A thin metal starting conductor is attached to the exterior surface of the glass envelope of an electric discharge lamp by introducing polyethylene in a plastic or liquid condition between the conductor and the surface of the envelope and solidifying the polyethylene. The attachment may be effected by placing solid polyethylene between the conductor and the envelope, rendering the polythene plastic or liquid by heating the envelope or using a preheated envelope and pressing the conductor against the glass surface with a roller. Alternatively the conductor may be embedded in the polythene by placing a layer of the polythene on the conductor as well as between the conductor and envelope, e.g. using a length of polyethylene coated strip or wire and pressing the strip against the preheated envelope surface.
Patent GB-756267-A (GB)
Title: A process of producing hydrazine
IPC: C01B21/16
Filed: 1954-07-23
Abstract: Hydrazine is recovered from hydrazine hydrohalide or a mixture of hydrazine and ammonium halide by treating with a solution in liquid ammonia of the stoichiometric quantity, based on the total salt present, of an alkali metal (e.g. sodium), strontium, calcium or barium, the solution being sufficiently dilute to be blue in colour, and fractionally distilling to separately recover hydrazine and ammonia.  The anhydrous hydrohalide or mixture may be dissolved in liquid ammonia prior to reaction.  The hydrazine may be produced as a solution in liquid ammonia by the treatment of liquid ammonia with chlorine.
Patent GB-680522-A (GB)
Title: Improvements in or relating to optical projection screens
IPC: G03B21/62
Filed: 1948-08-18
Abstract: 680,522. Projection screens; lenses. PHILIPS ELECTRICAL, Ltd. Aug. 18, 1948 [Aug. 21, 1947], No. 21796/48. Class 97 (i). [Also in Group XXII] A screen comprises a sheet of transparent or translucent material having on its two faces grooves in the form, respectively, of concentric circles or an Archimedian spiral and a set of parallel straight lines, one or both sets of grooves having lateral waves superimposed on them. Fig. 7 illustrates a screen having circular grooves forming a Fresnel lens and straight grooves for dispersing the incident light. If both circular grooves, e.g. 16, and straight grooves, e.g. 17, 18, have superimposed waves, the maximum reduction of moire effects is obtained when the waves of the two sets are in antiphase near the X axis. For this result each circular groove should contain an even number of complete waves. Either the wavelength is constant, and chosen in relation to the groove spacing, so that the waves of all the circular grooves are in phase (e.g. 23, 24) or the same number of waves is applied to every circular groove. Fig. 8 shows apparatus for cutting a spiral of grooves, with superimposed waves, to form a Fresnel lens. The transparent sheet 27 is carried on a rotating table 25 and the grooves are cut by a chisel 30 on a slide 29 which is traversed on a support 28. The chisel is controlled, in the manner required to produce the Fresnel lens, by mechanism such as described in Specification 678,916, [Group XXII]. The chisel is slightly flexible and is vibrated by an electromagnet 34 energized by an amplifier 35 fed with the output of a photoelectric cell 36 which scans a sound track 41 on a film 42 secured to the table 25.
Patent GB-706511-A (GB)
Title: Improvements in or relating to power driven files and other reciprocating tools
IPC: B23Q5/027
Filed: 1951-09-18
Abstract: 706,511. Reciprocatory filing. FLEXIBLE SHAFT & COVER MANUFACTURING CO., Ltd., and THOMPSON, G. H. Dec. 18, 1952 [Sept. 18, 1951], No. 21848/51. Class 83 (3). [Also in Groups XXIII and XXIV] A power driven reciprocating tool comprises a holder 28 for a hone, file &c. which is slidably mounted in one end of a housing 10 forming a handle, and a spindle 12 driven by a flexible shaft or a compressed air motor and carrying the inner race of a ball bearing 15, the ball bearing being set at an angle and having its outer race connected to the holder 28. The latter connection comprises a collar 21, a universal joint 22, a guide rod 23 and a connecting bar 25. In a modification, the tool-holder 52, Fig. 3, is offset and is balanced by plungers 51 moving in the opposite direction. The balljoint connections may be replaced by flexible cable connections. The return movement of the tool-holder may be effected by spring means. Specification 585,737 is referred to. The Provisional Specification states that the ball bearing unit may be replaced by an inclined disc.
Patent GB-1285394-A (GB)
Title: Improvements in or relating to door closers
IPC: E05F3/10
Filed: 1970-05-06
Abstract: 1285394 Door check EATON GmbH 6 May 1970 [7 May 1969] 21858/70 Heading E2M A door closer comprises a spring (not shown) acting on a piston 7' in a hydraulic cylinder 6', a piston rod 9' connected via a crank 10' to an axle 11', the axle mounting an arm 3' pivotally connected to a second arm 4' connected to the door frame; the piston and cylinder including a non-return valve 17' and a throttle bore 12'; the arrangement being such that, when the: door is open to 90‹, the crank makes an angle α' of less than 180‹ with the piston axis, the angle being measured in the direction of movement of the crank on the door closing. As shown, the throttle bore has two transverse ducts 16', 19', the piston blocking the duct 19' when the door is fully open to prevent the flow of oil therethrough; the piston moving due to oil leaking past the piston 7'. The throttle bore includes a threaded throttle spindle having a conical end 14'; a duct 15' may be provided to by-pass the end 14', the duct corresponding to the near-closed position of the door. The arms 3' and 4' form an acute angle for all positions of the door up to the 90‹ open position. In the prior art arrangement, Figs. 1-4 (not shown), the throttle bore connects directly with the chamber 5' and the angle α' is greater than 180‹.
Patent GB-294663-A (GB)
Title: Improvements in aircraft
IPC: B64C3/54
Filed: 1928-07-27
Abstract: 294,663. Tammeo, A., and Caminada, E. July 29, 1927, [Convention date]. Aeroplanes; planes, arrangement and construction of; controlling.-A monoplane is convertible during flight into a biplane (or a biplane into a triplane) by lowering a wing 2 nested under the main wing 1 by screws acting on frames 5<1>, 7 attached to the wing- spars. By unequally lowering the front and back spars the wing 2 can be given varying incidence. The screws are enclosed in stream-line struts 4<1>, slotted to give passage to the brackets 21 connecting the nuts 15 to frames 5<1> and reinforced by bars 17', 17" which are grooved to serve as guides for the nuts. The wing 2 moves between inclined struts connecting the plane 1 to the fuselage, and in one form, no provision is made for varying the incidence of the wing 2.
Patent GB-301006-A (GB)
Title: Improvements in and connected with apparatus for cleaning sand filter beds and the like
IPC: B41F13/54
Filed: 1927-08-23
Abstract: 301,006. Peebles, J. Aug. 23, 1927. Filters with loose filtering-materials.- Apparatus for cleaning beds of sand or the like comprises a structure movable over the bed and carrying means for scooping up the surface sand, means for directing jets of water against the sand scooped up, and impact surfaces against which the water jets and sand impinge. A wheeled carriage 5 is moved over the bed 1 on rails 4 by a motor 7 which also operates a pump 6 to deliver water from an adjacent trough or filter bed through a pipe 9 to a pipe 10. The pipe 10, Fig 5, a scoop plate 16 and an impact surface with concavities 17 are supported by a bar 12, suspended by arms 13 from an axle 14 of the carriage so that the parts can be raised or lowered As the carriage moves forward sand scooped from the surface of the bed by the plate 16 is carried by jets of water from nozzles 11 through bushed apertures 18 in the bar 12 and delivered against the concave surfaces 17. Impurities separated from the sand are carried away through an outlet 21 by water introduced through an inlet 22. Plates 19 form a partition wall between the clean water and dirty water. After the surface sand has been cleaned the remainder of the bed may be agitated by air or water for washing in the usual way. The carriage 5 may be moved from one bed to another on a bogie 23 moving on rails arranged transverse to the battery of beds. It is stated that for cleaning filters of the pressure type the apparatus may be mounted for rotation on a vertical axis.
Patent GB-709685-A (GB)
Title: Improvements in or relating to cyclone furnaces
IPC: F23C3/00
Filed: 1952-09-03
Abstract: 709,685. Pulverulent-fuel cyclone furnaces. BABCOCK & WILCOX, Ltd. Sept. 3, 1952 [Sept. 4, 1951], No. 22159/52. Class 51 (1). [Also in Group XI] A pulverulent-fuel cyclone furnace has a burner formed with a peripheral inlet 39 for the fuel and primary air, the peripheral wall 36 of the burner being formed about the burner axis O as a scroll defined by a swinging radius vector whose angle increases with its increase in length in a logarithmic or substantially logarithmic manner. The line of intersection of the wall 36 with a plane at right angles to the burner axis is defined by the formula r=e, where r is the increase in radius above a minimum radius R at an angle from the location of the minimum radius and a is a constant. The wall 36 comprises an outer metal plate against which is assembled an inner wear-resisting liner formed in removable sections. Specifications 598,141 and 598,142 are referred to.
Patent GB-1095999-A (GB)
Title: Improvements in fluid thrust bearing
Inventor: RYLATT JOHN ANTHONY
IPC: F16C17/04
Filed: 1964-05-28
Abstract: 1,095,999. Bearings. HAWKER SIDDELEY CANADA Ltd. July 20, 1965 [May 28, 1964], No. 22190/64. Heading F2A. A fluid thrust bearing comprises an annular member with one radial surface having lands 39 separated by recesses 40, each land extending between outer and inner peripheries of the member and between non-radial edges 41, 42 parallel to a radial line halfway between them, and each land having an inclined portion so that one edge 41 is lower than the other 42, and means supplying lubricant along the lower edge and scavenging lubricant from the higher edge. In Fig. 3 a plane, not-inclined portion 43 extends from the upper edge and meets the inclined portion in a line parallel to the edges. Grooves 44 adjacent and parallel to respective low edges supply lubricant, and grooves 47 adjacent and parallel respective high edges scavenge lubricant. In Fig. 1 (not shown) the member floats between a fixed thrust ring (26) and a collar (22) which rotates in one direction only, and both sides of the member 30 have the same formation. When the member is used in a reversible machine each surface is a mirror image of the other. Alternatively, as in Fig. 7 (not shown) the member is fixed to a stationary thrust ring (26) and has one operative surface only.
Patent GB-751100-A (GB)
Title: Improvements in record card controlled machines
IPC: C09K11/07
Filed: 1953-05-14
Abstract: 751,100. Statistical apparatus. MAUL, M. May 14, 1953 [May 20, 1952], No. 22221/55. Divided out of 751,008. Drawings to Specification. Class 106 (1). A machine controlled by groupwise sorted record cards in which the items of consecutive cards of a.group are automatically computed in accumulators and in which upon group change, punching of a plurality of adjacent record columns of a total card is simultaneously effected under the control of a group control device. by means of a punching device under accumulator control is characterized in that for punching of multi-deck cards there is provided a punching device common to all decks, arid means for feeding the decks one by one past said punching ing device. The subject-matter of this Specification is identical with that described in Specification 751,008 but the claims differ. Specification 674,572 also is referred to.
Patent GB-1254673-A (GB)
Title: Improvements in or relating to power-assisted steering mechanisms, particularly for motor vehicles
IPC: B62D5/08
Filed: 1970-05-08
Abstract: 1,254,673. Power-assisted steering mechanism. ZAHNRADFABRIK FRIEDRICHSHAFEN A.G. 8 May, 1970 [10 May, 1969], No. 22308/70. Heading B7H. In power-assisted vehicle steering mechanism comprising a steering spindle 2 and worm 3 connected for relative rotation through a torsion bar 1, and two valve pistons 15, 16 slidable in a valve body 4 on the worm 3 and engaged by pins 13, 14 carried by the spindle 2 so that the valve pistons are displaced in opposite directions upon relative rotation of the spindle and worm, pre-stressed centring springs 55, 56 are disposed between the valve pistons 15, 16 and the valve body 4 to supplement the centring effect of the torsion bar 1. Washers 51, 52 carried by adjustable set screws 47, 48 on a supported member 46 on the valve housing 4 limit expansion of the springs 55, 56 to prevent them influencing the valve pistons 15, 16 in their neutral position. Control edges 32, 35, 38, 39 of the valve pistons 15, 16 control communication between grooves 23, 24 connected to a steering motor and pressure fluid supply and return ports 19, 20. One of reaction pistons 40, 41 is subjected through a passage 42, 43 to the pressure at the groove 23 or 24 which communicates with the supply port 19 during a steering manoeuvre. In another embodiment, Fig. 3 (not shown), both centring springs are operative in both steering directions. In a further embodiment, Figs. 4, 5 (not shown), the centring springs are accommodated in hydraulic damping chambers which replace the reaction pistons. Each damping chamber is sealed by a diaphragm spring and vented through a throttle opening. Additional retaining springs coaxial with the centring springs ensure positive engagement between the valve pistons and pins.
Patent GB-1393974-A (GB)
Title: Method and device for controlling a freezing apparatus
IPC: F25D29/00
Filed: 1972-05-12
Abstract: 1393974 Refrigerating GRASSO'S KONINKLIJKE MACHINEFABRIEKEN NV 12 May 1972 [21 May 1971] 22418/72 Heading F4H Refrigeration apparatus for continuously cooling baskets 1 containing various products to be frozen, comprises an inlet duct 2 connected to an outlet duct 20 by a horizontal conveyer portion, liquid refrigerant spray nozzles 6 for directly freezing the products in an evaporation zone 5, a sump 7 in which non-evaporated liquid refrigerant accumulates, a condenser 11 through which flows the evaporated liquid, and a pressure control gauge 19 connected to the bottom of either duct 2 or 20. The discharge of air from the refrigeration apparatus is controlled by the gauge 19; a signal from which is used to adjust either a control valve 21 or a control valve 10 between the evaporating chamber and the condenser chamber. In operation, the air entering with the product via the supply duct 2 is mixed with the evaporating liquid refrigerant, e.g. CF 2 Cl 2  in chamber 5 and the mixture flows via valve 10 to the condenser 11. The greater part of the mixture is liquefied by cooling with CHF 2 Cl and flows via a discharge line 13 to sump 7. The air with the non- condensed part of the mixture collects in a chamber 14 and is guided to an after-condenser 16. The condensate passes via line 17 to sump 7; the air being removed via a pump 18 or a downcover under the control of the valve 21.