baber/WOPTO huggingface dataset:
Patent GB-253576-A (GB)
Title: Improvements in automatic circuit breakers
IPC: H01H75/04
Filed: 1925-03-12
Abstract: 253,576. Igranic Electric Co., Ltd., and Curtis, A. H. March 12, 1925. Cut-out arrangements. - Automatic circuitbreakers which are reclosed automatically after release on overload are maintained open indefinitely in the case of a persistent overload by a device which operates in response to the attainment of a given temperature by a thermal element which is adapted to accumulate heat during the subsistence of the conditions producing the overload. As shown in Fig. 1, this device consists of a bimetallic strip 8<b> heated by a coil 8 which is energized from the line through a regulating resistaance 9 when back contacts 2<c> are bridged by the opening of the circuit-breaker 2 which is produced by operation of the limit lag overload relay 6. Normally the circuit-breaker is reclosed by a relay 4 the circuit of which is closed through contacts 2d which engage at a time after their circuit-breaker release which is determined by an adjustable dash-pot 3. The operation of relay 4 completes the circuit-breaker closing coil circuit through winding 2<e> and of its own maintaining circuit through the contacts 6a of the overload relay 6 and the contacts 8<a> of the thermal switch. If the fault conditions persist the accumulation of heat in the strip 8 causes it to bend and the contacts 8<a> are allowed to open and so prevent any further reclosure of the circuit-breaker until the thermal switch is reset to manually by movement of the operating- rack S<a>.
Patent GB-379714-A (GB)
Title: Improvements in cartridge magazines for fire-arms
IPC: F41A9/73
Filed: 1931-03-04
Abstract: 379,714. Cartridge magazines for firearms. ARNOLD, C., 11, Southampton Buildings, London.-(Tikkakosken Rauta-Ja Puuteollisuus O. Y. ; Helsinki, Finland.) March 4, 1931, No. 6784. [Class 92 (ii).] A feeding drum 5 operated by a spring 10 is provided with means for example, holes 20, for the attachment thereto of a winding key 16, for example by pins 19 on the key, and the spindle around which the drum rotates is provided with a ratchet wheel 21 adapted to be engaged by a pawl 22 on the key, to hold the drum when the spring is wound up while fresh cartridges are loaded into the drum. In the form shown in Figs. 1 and 2, the drum 5 is enclosed in a casing 1 attached to the spindle and closed by a side plate 9, which is removed to permit fresh cartridges to be loaded into a circular track 8. In use, the cartridges are pushed round by a feeder 11 on the drum and are guided by a blade 13 to an outlet 15. The cartridge track may comprise two or more concentric circles joined one to the other or may be made as a spiral track, the feeder 11 being suitable pivoted to follow the track. Numerals may be marked on the drum to indicate through a window in the casing the number of cartridges in the drum.
Patent GB-557334-A (GB)
Title: Improvements in and relating to automatic synchronizing control systems
IPC: H02J3/42
Filed: 1942-05-19
Abstract: 557,334. Electricity supply. BRITISH THOMSON-HOUSTON CO., Ltd. May 19, 1942, No. 6800. Convention date, May 20, 1941. [Class 38 (iv)) Synchronizing frequency converters.-To connect the second element 11 of a synchronous frequency converter 9, 11 to its load circuit 2 with its terminal voltage in correct phase, a differential relay 30 has opposed elements 31, 32 respectively, subject to a torque proportional to the size of the angle between the voltages of corresponding phases of the circuit 2 and of the machine element 11 and to a torque proportional to the load angle of. the corresponding element 6 of a frequency converter 4, 6 connected to the circuit. The incoming frequency converter is started as an induction motor by closing the circuit breaker 10 through the agency of a switch 14 which remains in control of all subsequent operations. At the same time a field switch 16 closes to excite the element 11 which at a suitable voltage energizes relay 18 to cause field switch 19 to close and bring the element 9 into synchronism. To bring the terminal volts of element 11 into correct phase with circuit 2 a control relay 59 then operates to energize a time relay 22 which, through the operation of a relay 23 and time delay drop out relays 25, 26 interlocked with field and field reversing switches 19, 24, causes successive field reversals of the element 9 until the differential relay 30 is balanced whereupon its contact 39. energizes a relay 40 to prevent further field reversals and cause the closure of circuit breaker 12. A second differential relay 45 similar to 30 but with the torque of one element reversed may operate its contact 52 to cause a single reversal of the field of the element 11 and closure of the circuit breaker 12 to minimize the reversals of excitation of the element 9.
Patent GB-159878-A (GB)
Title: A process for the manufacture of ammonia
IPC: C01C1/04
Filed: 1921-03-01
Abstract: Catalysts for the synthesis of ammonia from its elements consist of iron, nickel, cobalt, chromium, or manganese, activated by the addition of cyanides of the alkali metals; a pressure of 80 atmospheres and temperature of 375 DEG  C. are mentioned as suitable for the reaction, using iron and potassium cyanide as the catalyst. The Specification as open to inspection under Sect. 91 (3) (a) describes also the use of cyanides of alkaline-earth metals as activating materials.  This subject-matter does not appear in the Specification as accepted.
Patent GB-1195633-A (GB)
Title: A Battery for the Generation or Utilisation of Electrical Energy and a Method for its Production
IPC: H01M8/24
Filed: 1968-02-12
Abstract: 1,195,633. Moulding battery components. VARTA A.G. 12 Feb., 1968 [18 Feb., 1967], No. 6831/68. Heading B5A. [Also in Divisions C7 and H1] A fuel cell battery may be produced by forming a stack of alternate, positive and negative electrodes with spacer frames and spacers in between, pressing the stack together and moulding a synthetic resin case around it. The electrodes may be fitted with flexible vent tubes, Fig. 4, which prevent gas trapped inside them from escaping into the resin and forming bubbles in it. After moulding the tubes may be removed to form gas supply ducts. Electrolyte supply ducts may be formed by positioning in the mould bodies which are withdrawn or dissolved out after moulding.
Patent GB-255414-A (GB)
Title: Improvements in machines for the manufacture of chocolate cigarettes
IPC: A24C5/02
Filed: 1926-03-12
Abstract: 255,414. M³ller, J. C. July 15, 1925, [Convention date]. Confectionery. - A machine for making chocolate cigarettes which consist of bars of chocolate within paper tubes, comprises a rotary drum 18 having peripheral recesses 19 which take chocolate rods K from a hopper 13, a similar drum 4 which receives lengths of paper tube 4 which are cut by shears 2 from a length 1; and a reciprocating rammer 27 which pushes the chocolate rods independently through a guide 35 and an annular cutting die 36 into the paper tube aligned therewith, the rod being finally guided into the tube by a device 37 comprising spring tongues 45 carried by an annular plate, the .device 37 being reciprocated along a guide 40 by a cam 42 and a rocking-lever 41 whereby the tongues 45 are inserted into and withdrawn from the tube being filled. The rammer 27 is carried by a slider 28 on a guide rod 29, the slider being operated by a crank 31 and connecting-rod 30. The drum 4 is rotated intermittently and the drum 18 is similarlv rotated by a cam 21, rod 20 and ratchet 26. A positively operated roller 15 prevents the rods K from jamming in the mouth of the hopper 13. An abutment plate 43 prevents longitudinal movement of the tubes during the filling, the tubes being also held by a finger 5 on a rocking. lever 6 operated by the cam 8 through a connecting-rod 7 and the filled tubes are retained in the recesses 4 by a curved plate until they are released and fall upon a discharge conveyer.
Patent GB-911524-A (GB)
Title: Process for the preparation of pyridine
IPC: C07D213/14
Filed: 1961-02-24
Abstract: Pyridine is prepared by reacting ammonia with tetrahydrofurfuryl alcohol at a temperature of 400-600 DEG C. and a pressure of 0.1-20 atm. in the presence of a molybdenum oxide catalyst containing potassium oxide as promoter.  The catalyst may be supported, e.g. on alumina, zinc, spinels, basic aluminium phosphates, magnesia-silica, magnesia or bauxite.  Preferably the catalyst contains 2-20% (by weight) of molybdenum oxide and 0.1-15% of potassium oxide.  The molar ratio of ammonia to tetrahydrofurfuryl alcohol used is between 2 : 1 and 10 : 1.
Patent GB-623598-A (GB)
Title: Improvements in game or amusement apparatus, including means simulating the steeringof vehicles
IPC: A63F9/14
Filed: 1947-03-13
Abstract: 623,598. Games of skill. SMITH, J. A. March 13, 1947, No. 6992. [Class 132 (ii)] [Also in Group XXXVII]  In game apparatus in which a stationary vehicle is steered over the top run of a moving endless belt 8, a track is defined on said belt by two flexible strips of material 9, 10 which are bent while the apparatus is in operation so that the formation of the track is frequently varied. A vehicle 11 secured to the back of the apparatus by a wire 12 is steered by a wheel 4 through a Bowden cable 13 across the belt 8 driven by an electric motor 6, the supply circuit of which includes a variable resistance 26. The track strips 9, 10 ride in sockets 34, 35 at one end and are fixed at the other end in spindles 37, 36 connected by linkwork 38, 39, 40 so as to be similarly rotated by motor 6 through intermittently operating gearing 45, 46, face cam 44, cam follower 42 and a universal joint 38a. In operation, if the vehicle should touch one of the flexible bands 9, 10 a circuit is made through line 62, a band 9 or 10, the vehicle 11, the wire 12 and lines 59, 60 to energise a solenoid 15. This solenoid operates a fork 17 which moves a sleeve 18 carrying a cam 19 along a power-driven axle 20 so as to disengage the cam 19 from its follower 21 carried on a lever 22 loaded by spring 24. The lever 22 carries a contact 25 which then moves over the resistance 26 to slow the motor 6. Meanwhile the cam 19 has been rotated once anti-clockwise (Fig. 3) by a spring 30, the sleeve 18 having been disengaged from the shaft 20 through a dog-clutch 29. When the vehicle 11 has been steered off the flexible bands, the solenoid 15 is deenergised and the clutch 29 is engaged and the cam follower 21 co-operates with the lowest part of the cam 19. The cam 19 then rotates one turn clockwise until a stop 31 engages an abutment 32 and the lever 22 thus cuts out the resistance 26 gradually until the motor 6 reaches maximum speed unless the vehicle 11 has meanwhile touched a band once more. The apparatus may include-a time-switch 58, and a revolution counter 14 and may be coin freed. Methods are described of tensioning the cable 13 to give a backward pull on the vehicle 11.
Patent GB-1158113-A (GB)
Title: Surgical Stapling Instruments
IPC: A61B17/072
Filed: 1966-07-06
Abstract: 1,158,113. Surgical stapling instruments. UNITED STATES SURGICAL CORP. 6 July, 1966 [6 July, 1965], No. 7080/69. Divided out of 1158111. Heading A53. [Also in Division B4] The subject matter of this Specification is substantially identical with that described with reference to Figures 18 to 23 in Specification 1158111, but the claims are concerned with a surgical stapling instrument, for use with a detachable staple magazine, comprising spaced jaws extending forwardly from a body, one jaw having an anvil surface with staple clinching depressions and the other being adapted to receive the magazine, means for bringing the jaws into clamping engagement with tissue and means movable longitudinally of the other jaw for ejecting staples one after the other from the magazine when mounted in the instrument.
Patent GB-144588-A (GB)
Title: Improvements in rolls or rotors for beating, bleaching and washing machines
IPC: D06F11/00
Filed: 1920-03-09
Abstract: 144,588. Peterson, E. A. March 9, 1920. Passing materials through fluids; agitating materials and liquids together. - Relates to rolls for beating, bleaching, and washing machines, and consists of the provision of a bandless roll having means for readily and interchangeably securing knife bars in position on the roll frame. The knife bars 9 with spacing members 10 are mounted on collar members 6, 7, 8 on a shaft 5, lugs 17 on which hold the knife bars between them, while the spacing members 10 have recesses to engage therewith. Retaining rings 20 on the collars have laterally projecting ribs 22 interlocking with offset recesses 12, 15, 16 in the bars 9 and members 10, the outer portions of the members 20 projecting into recesses 11, 13, 14. The ribs 22 on the collar 8 are reversed, to allow of removal of the bars 9 by moving the member 20. Inner ribs 23, Fig. 3, on the members 20 engage in grooves 24 in recesses 19. The rounded heads of the bolts 21 are counter-sunk, and around them bosses 26 project into recesses 27 in the end-collar members.
Patent GB-1137107-A (GB)
Title: Photoconductive device
IPC: H01J29/45
Filed: 1966-02-17
Abstract: 1,137,107. Photo-conductive device. RADIO CORPORATION OF AMERICA. 17 Feb., 1966 [4 March, 1965], No. 7105/66. Heading H1K. A photo-conductive device comprises a conductive layer, a photo-conductive layer of selenium or selenium alloy over the conductive layer and a thin layer of pure vitreous selenium between the conductive layer and the photo-conductive layer, said thin layer being 100 to 1800 A thick. A glass envelope 14 is closed at one end by a glass plate 16, indium ring 18 and clamping ring 20. A mesh screen 22 is mounted across one end of a tubular focusing electrode 24. The photo-conductive target comprises a SnO layer 26, a stabilizing layer 32 of Au, Ag, Cu, Rh, Pd, Ge, GeO 2 , Sb 2 S 3  or Sb 2 O 3  to prevent crystallization of a blocking layer 30 of vitreous Se, an evaporated layer 28 of Se/Te/As/Sb alloy and a further stabilizing layer 34 of Ge, GeO 2 , Sb 2 S 3 , or Sb 2 O 3 . One or both of the stabilizing layers 32 and 34 may be omitted. The blocking layer 30 is said to eliminate ohmic contact between the conductive layer 26 and the selenium alloy 28 during operation of the device thus reducing dark current.
Patent GB-393240-A (GB)
Title: Manufacture of oxydiphenyl-ether-carboxylic acids
IPC: B26F1/40
Filed: 1933-03-09
Abstract: Oxydiphenylether carboxylic acids are prepared by treating an alkali metal salt of an oxydiphenylether with carbon dioxide at elevated temperature and pressure.  Examples are given of the preparation of (1) 4 : 4<1>-dioxydiphenylether-3 : 3<1>-dicarboxylic acid from 4 : 4<1>-dioxydiphenylether, (2) 2-oxydiphenylether-3-carboxylic acid from o-oxydiphenylether, and (3) 4-oxydiphenylether-3-carboxylic acid from p-oxydiphenylether.
Patent GB-1424667-A (GB)
Title: Method of moulding a plastics material element and apparatus  therefor
IPC: B42F13/34
Filed: 1972-02-16
Abstract: 1424667 Moulding folding binders; engaging bosses ALPA STEEL & PLASTICS Ltd 1 March 1973 [16 Feb 1972] 7239/72 Heading B5A [Also in Divisions B6, E2] A folding binder for perforated loose leaves having a pair of spaced projecting bosses formed on a front face and co-operating when the binder is folded to lock together, one boss having an undercut to provide a projecting head engaging beneath an abutment formed by an undercut on the other boss, is formed in a mould comprising first and second mould parts to shape its front and rear faces respectively, the first mould part having cavities defining the bosses and the second mould part having protrusions extending into the cavities to form the undercuts in the bosses. The binder may comprise a flat sheet 1, Fig. 3, having rear and front surfaces 3, 4 the front surface 4 having pairs of bosses 5, 6 which engage when the binder is folded about reduced spine portion 2. As shown, each pair comprises a boss 5, Fig. 4, and a hollow cylinder 6, Fig. 5, for co-operation therewith. The boss 5, comprises a cylindrical portion 8 with a domed top 10, and wings 9 providing abutment surfaces 11. The cylinder 6 has opposite undercuts 13 having abutment surfaces 14 to abut surfaces 11 when engaged. The front surface 4 and rear surface 3 are formed by first and second mould parts 20, 21, Fig. 6 respectively. Boss 5 is formed by a cylindrical cavity 22 in part 20 having slots at its sides for wings 9 into which slide fingers 25 on part 21 to provide surfaces 11, also forming openings 12 in binder plate 1. Cylinder 6 is formed in a cylindrical, annular cavity 23 into which slide fingers 26 to provide undercut openings 13 having abutment surfaces 14. Fingers 26 also form openings 15 extending through binder plate 1.
Patent GB-354219-A (GB)
Title: Improvements relating to bridges and like structures
IPC: E01D15/14
Filed: 1930-03-05
Abstract: 354,219. Bridges. MAIN, J. A., Clydesdale Ironworks, Possilpark, Glasgow. March 5, 1930, No. 7268. [Class 20 (i).] A continuous rigid girder for spanning rivers, is carried at its ends on fixed abutments or anchorages and is supported at intermediate points by means of wholly submerged pontoons A, A<1>, the upward force of which is in excess of the downward pressure due to dead load, live load and wind pressure. The buoyancy of the pontoons may be maintained automatically by means of pumps and deposits around them may be removed by pressure action. The pontoons may be anchored against horizontal movements due to flow of water or they may be protected by dolphins and are preferably employed at a distance of one-fifth of the span of the bridge from each shore. The bridge structure increases in depth from the abutment to the pontoon, then decreasing to the centre of the bridge.
Patent GB-646571-A (GB)
Title: An improved manufacture of small commutators
IPC: H01R43/08
Filed: 1947-03-17
Abstract: 646,571. Commutators for dynamo-electric machines. LANDIS & GYR SOC. ANON. March 17, 1947, No. 7379. Convention date, March 18, 1946. [Class 35] [Also in Group XXII] Small commutators are formed from ribbed strip, which may be copper, having a width equal to the length of several commutators and bent into a ring 21. Insulation 7, preferably synthetic resin, is then pressed between the ring and the usual shaft bush 6, and the outer connecting material of the ring is removed to leave insulated segments 2.
Patent GB-799552-A (GB)
Title: Means for closing the filling orifices of electric storage batteries
Inventor: SPENCER GEORGE DOUGLAS
IPC: H01M2/12
Filed: 1956-03-09
Abstract: 799,552. Batteries. LUCAS (INDUSTRIES), Ltd., J. March 8, 1957 [March 9, 1956], No. 7408/56. Class 53. The filling orifices in the top of an accumulator are closed by plugs d which are formed integrally with an extensible strip a made of rubber or rubber-like material. Each plug is formed with vent holes g and is provided with a web e carrying a baffle disc f at its lower end. The strip a has openings corresponding to the holes g. Projections h on the plugs engage in slots j in the sides of the filling openings. The strip may have a knob i to facilitate detachment of the strip from the battery cover.
Patent GB-672243-A (GB)
Title: Improvements in or relating to liquid cooling stacks or towers
IPC: F28F25/08
Filed: 1949-03-18
Abstract: 672,243. Treating liquids with gases. FILM COOLING TOWERS (1925), Ltd., BRANCZIK, E. A. C., and HOWE, E. A. A. March 17, 1950 [March 18, 1949], No. 7459/49. Class 55 (ii). [Also in Group XIII] In a cooling tower packing substantially as described in Specification 672,244, the locating posts 12 are secured to the top and bottom tiers of laths 1 so that a rigid unit is formed, and each post has a locating aperture 15 and a locating pin 14 at opposite ends so that the unit can be superimposed on a similarly constructed unit. Specification 672,331 also is referred to.
Patent GB-234230-A (GB)
Title: Improvement in and relating to belt fasteners
IPC: F16G3/06
Filed: 1924-03-25
Abstract: 234,230. Johnstone, J. R. March 25, 1924. Belt fastenings.- Relates to belt fastenings of the kind in which metal eye - links are inserted through holes in the abutting turned-up ends of a belt and metal plates are placed in position to bear against the belt surfaces, the whole being secured by two metal cross-pins inserted through the eyes of the links, and consists in forming by stamping or otherwise two bosses or projections f on each plate c to prevent the securing pin e from slipping or working out of the eyelinks d.
Patent GB-1370714-A (GB)
Title: Integrated bistable circuit
IPC: H03K19/086
Filed: 1972-02-18
Abstract: 1370714 Transistor bi-stable and logic circuits PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 18 Feb 1972 [23 Feb 1971] 7603/72 Heading H3T An integrated bi-stable circuit selectively operable as a D or R.S. type comprises a logic circuit output loop including a first gate FG (e.g. an AND or a NAND if the logic polarity is changed) receiving the "reset" input, which loop is controlled by a further logic gate D receiving information and command signals I, C<SP>1</SP>, one level at the "reset" input causing operation as a D type and one level at the information terminal causing operation as an RS type. False operation due to switching delays may be avoided by providing extra gates as in Fig. 2. Delays may be reduced by using "wired OR" gates shown as rectangles in Fig. 3 and standard integrated circuits may provide extra inputs. Standard packages may make available further inputs or twin circuits and also provide output gates for synchronizing or for disconnecting the output during switching (Figs. 4 and 5, not shown). Emitter coupled logic may be used, wired AND circuits being provided by directly connecting the output terminals of emitter follower output stages of the gates (Fig. 6, not shown) and wired OR by commoning the collectors of commoned emitter transistors of two gates (Fig. 7, not shown).
Patent GB-177047-A (GB)
Title: Improvements in or relating to screw propellers and similar appliances of the axial flow type such as are employed to impart energy to fluid streams or to develop propulsive reaction
IPC: B63H5/15
Filed: 1921-03-10
Abstract: 177,047. Gill, J. H. W., and Hobson, E. D. March 10, 1921. Screw propellers.-Two oppositely rotating coaxial screw propellers each carry a casing, which casings jointly act as a converging nozzle. The blades A have an attached casing D which in oonjunction with the casing D<1> on the blades A<1> form a converging nozzle. Each blade may have an increasing pitch from the front edge to the rear edge and from root to tip. The blades may be inclined to the shaft, be formed by a curved generatrix, and have a uniform thickness across the blade, which thickness diminishes from root to tip. Specification 142,713 is referred to.
Patent GB-660792-A (GB)
Title: Improvements in or relating to electron discharge tube arrangements for use on ultra high frequencies
IPC: H01J25/38
Filed: 1948-03-12
Abstract: 660,792. Travelling wave tubes. CAMPAGNIE GENERALE DE TELEGRAPHIE SANS FIL. March 12, 1948 [April 21, 1947], No. 7654/48. Class 39 (i). [Also in Group XL (c)] In a travelling wave tube a rhumbatron cav arranged beyond the output coupling point for the wave, is traversed by the electron beam after its interaction with the travelling wave. The output from the rhumbatron may be utilized separately, or it may be as shown, combined with the travelling wave output, suitable arrangements being provided to secure the appropriate phase relationships. For operation as an oscillator an external feed-back path may be provided; it may be between the rhumbatron output and the travelling wave input, or between the travelling wave output and the travelling wave input. Adjustable pistons or a tunable cavity resonator may be inserted in the feedback path. A density modulation grid may be provided, and the helix C may be replaced by a dielectric guide or delay line.