baber/WOPTO huggingface dataset:
Patent GB-100440-A (GB)
IPC: F02M69/00
Filed: 1916-03-30
Abstract: 100,440. Smal, r. May 10. 1915, [Convention date]. Spray carburettors.-In an engine having a scavenging-pump which forces air through the carburettor, the constant-level fuel chamber a of the carburettor is connected to the delivery pipe 3 of the pump on the inlet side of the jet chamber b. The connecting-pipe 5 is provided with a spring- loaded check valve 6, which closes when the pressures in the chamber a and pipe 3 are equal. Assuming the pressure in a to be equal to that in 3, if the cylinder inlet valve is opened, there is a drop of pressure in 3 and in b, and fuel is forced through the nozzle, the valve 6 preventing a fall of pressure in the chamber a. The chamber a may be fed by a pump or from an overhead reservoir 8 also connected to the pipe 3 by a pipe 7.
Patent GB-648753-A (GB)
Title: Improvements in precision resistors
IPC: G01R1/20
Filed: 1947-02-18
Abstract: 648,753. Resistance measurement; combinations and sets of resistances; variable contact resistances. TELEFONAKTIEBOLAGET L. M. ERICSSON. Feb. 18, 1947, No. 4709. Convention date, Feb. 18, 1946. [Class 37] Fig. 1 shows a device for adjusting a plurality of interconnected resistors to precision accuracy. Battery B sends a current variable by RR through a standard resistance RN and a chain of series-connected resistor units in parallel with RR/RN. Each of the resistor units comprises a main resistor 1-10 in series with an auxiliary slide wire 11, 12, &c. each having a value 0.001 or some other chosen value not greater than 0.1 of the resistance of the corresponding main resistor according to the accuracy required. To adjust resistor 1 with its slide wire 11, for example, RR is varied so that a suitable current flows and the standard RN has applied to it through two position switch A an opposing voltage derived from potential divider RD. The slider S on the latter is adjusted until zero deflection on the galvanometer G indicates equality of the opposing PDS. Switch A is changed over to connect potential divider RD to resistor 1 and slide wire 11 through terminal K1, rotary switch arm 31 and sliding contact 15, which latter is then adjusted along slide wire 11 until G again reads zero which will mean that the resistance of 1 plus the resistance of slide wire 11 up to the point of adjustment of slide 15 is equal to RN. The slide 15 is locked in the set position by means of a screw which may be sealed. So that unit 2/12 may be adjusted the arm 31 is turned to contact 22 and contact 21 is connected to K1 after severing the latter's connection with contact 20. The other units are similarly separately connected to RD as each in turn is adjusted: If in Fig. 1 any of the units is to be given a resistance value different from that of the other units RN is changed to the required value. The resistance wires 11, 12 &c. may be arranged as coils or in arcuate form with the corresponding sliders on rotary arms. Fig. '2 (not shown) illustrates the connection for a single unit to be adjusted.
Patent GB-230054-A (GB)
Title: Apparatus for improving the power factor of induction motor combinations
IPC: H02K17/38
Filed: 1925-02-20
Abstract: 230,054. British Thomson-Houston Co., Ltd., (Assignees of Compagnie Fran- þaise pour l'Exploitation des ProcÚdÚs Thomson- Houston). Feb. 26, 1924, [Convention date]. Alternating-current commutator and induction machines.-To obtain relatively high slip values with power-factor improvement on all loads, a series commutator machine electrically and mechanically coupled with an induction motor is provided with means responsive to the slip frequency for moving its brushes into a position where it operates as a motor when the load increases, or from a position where the brushes are biassed and the commutator machine functions as a self-excited generator. The slip regulator G comprises a squirrel-cage motor fed through a transformer T and connected by a cord L to the brush-carrier C which is biassed by a spring R into the generator position of the machine B.
Patent GB-124265-A (GB)
Title: An Improved Muffled Chamber suitable for use as a Roasting Furnace or Kiln.
Inventor: HARBORD FRANK WILLIAM
IPC: F27B1/08
Filed: 1918-03-19
Abstract: 124,265. Harbord, F. W. March 19, 1918. Muffle furnaces; rotary furnaces.-A muffle for roasting ores &c. is constructed of slabs or bricks d, with inclined meeting edges, set in a cylindrical casing a, which may be rotated, the lining being provided with longitudinal recesses forming heating- flues. The finely.divided material is introduced at one end through nozzles l by an air blast, and is discharged through ports m at the other end.
Patent GB-266897-A (GB)
Title: Improvements in apparatus for softening, refining and cleaning fibrous materials
IPC: D01G9/00
Filed: 1926-02-19
Abstract: 266,897. Gminder, E. Feb. 19, 1926. Breaking and scutching apparatus; softening fibres.-In an apparatus for treating low grade material such as hemp, entangled and short fibre material, and waste yarns and rags, of the kind in which the material is placed in a container 1, Fig. 1, and operated on by weighted rotary members 4, 5, means such as toothed rollers 6 are provided to turn and entangle the material between the members 4, 5. The rollers 6, which may be conical, are carried by arms fixed to the central shaft 3 and are rotated in the opposite direction to the members 4, 5 by bevel gearing. The material may be passed between a pair of toothed rollers. The conical rollers may have their larger ends nearer to the central shaft. The floor 2 of the container is perforated and is provided with a hole 20 which can be covered by a door 13, through which the material can be fed by a roller 10 from the belt 11. The material can be discharged on to the belt 11 by the same roller. The central shaft 3, Fig. 4, also carries rakes 8 which are given a vertical reciprocation by a crank 85 operating a slide 86 carrying the rake.
Patent GB-792319-A (GB)
Title: A combined engine heater and battery charger
Inventor: DERRICK KENNETH CAMPBELL
IPC: H02J7/02
Filed: 1955-02-18
Abstract: 792.319. Induction heating. POWER FREQUENCY HEATING, Ltd. June 16, 1955 [Feb. 18, 1955], No. 4875/55. Class 39(3) [Also in Group XXXV] A combined engine heater and battery charger comprising a core 1 which may be retained in position on a ferrous part of an engine by magnetic attraction has a tapped primary winding 3 for energization by A.C.. heat being generated by induction in the engine part. Additional means for attaching the heater-charger to the engine may be employed. A bridge rectifier 7 for providing charging current is connected to one secondary winding, and further secondary windings energize a pilot light 15 and a resistive load 16. The heater shown in Fig. 7 comprises a handle 19 incorporating a switch 20 for controlling the primary winding excitation current which is fed through conductor 9 via a quick release connections 8. Wire bundles or metallic powder may be used for the core and the pole faces may be in planes other than at right angles to the axes of the core limbs. Single or polyphase A.C. of 25, 33<SP>1</SP>/ 3 , 50 or 60 c.p.s. may be used for excitation and may be thermostatically controlled. More than one heater charger may be applied to an engine. According to the Provisional Specification, an induction heater for engines may be energized by pulsating current and may be used with non- ferrous parts of an engine to which the heater is clamped or with which the heater may be integral. The pulsating current may be produced by means of a vibrator energized by the battery of the engine. Ferrous bars or plates may extend between the poles of the heater; silicone impregnated glass and silicone varnish are specified as insulation for the windings and their formers. When a battery charging winding is embodied in the heater, tappings for producing trickle or boost charges are provided.
Patent GB-1216722-A (GB)
Title: Improvements in or relating to electrodes for galvanic cells
IPC: H01M4/76
Filed: 1968-01-31
Abstract: 1,216,722. Tubular electrodes. TUDOR A.B. 31 Jan., 1968 [14 March, 1967; 21 April, 1967], No. 4883/68. Heading H1B. The covering of a tubular electrode comprises a number of tubular sections equal to the number of rods of active material 6 and made up from an equal number of U-shaped members of fibrous material 7. Preferably as shown in Fig. 7 the free arms of the U-shaped members 7 enclose the closed part of the member 7 in front of each of them and the members 7 also comprise an outer layer 5 of a perforated foil of, e.g., plastics material. The fibrous material may be of plastics material, glass or a combination thereof. A single outer cover for the whole electrode may also be provided (Fig. 12, not shown).
Patent GB-645378-A (GB)
Title: Improvements relating to guards for metal cutting or drawing presses or other like machines
IPC: F16P3/08
Filed: 1948-02-19
Abstract: 645,378. Machinery guards. UDAL, J. D., HERBERT, W. J., and MOORE, K. R. C. Feb. 19, 1948, No. 4893. Addition to 565,249. [Class 80(iv)] A modification of the invention of the parent Specification consists in operating the guard j by means of a pedal 6 the operation of which first closes the guard and through connections y, r, z, v, w, moves a latch member p from obstructing a clutch controlling member i. Further movement of the pedal operates a valve 17 to supply pressure fluid to a piston 14 to retract the clutch control member i which allows a spring-loaded clutch key d to engage. On release of the pedal the pressure fluid on piston 14 is exhausted and the member i is moved back by a spring 16 to a position to engage an arm h of the clutch key d to effect disengagement. Specification 620,246 is referred to.
Patent GB-557360-A (GB)
Title: Improvements in and relating to the cooling of internal combustion engines
IPC: F02F1/34
Filed: 1942-04-15
Abstract: 557,360. Cooling cylinders. LANGLEY ALLOYS, Ltd., and SKRIPT, G. April 15, 1942, No. 4952. [Class 7 (ii)] [Also in Group XXII] For cooling the cylinder head, particularly of sleeve-valve engines, the head 1 is fitted with a closure member 8 having a number of fins, rods, or spikes 9 of high-conducting material, such as copper or copper alloy, united axially thereto by hard solder. The closure 8 may be stepped at 12, and is shrunk into position. The solder may be composed of silver and copper, with or without brass, cadmium, antimony, or zinc, and the fins may be assembled in a jig or template while the union is effected by furnace soldering or brazing the abutting ends at about 720‹ C. The jig may consist of two plates, one slotted to fit over the fins and placed midway of their length, and the other attached to the outer ends of the fins by torch brazing, with the interposition of a shim of silver solder. The fins are disposed around one or more openings 14 for spark-plugs or a thermo-couple, either radially or parallel to one another. The head may be air or water cooled, and may have conventional radial fins 6, 7, attached to the wall 2 against which the sleeve valve slides. The head may be combined with a cylinder provided with cooling-fins as described in Specification 542,977. Specification 535,921, [ Group II], also is referred to.
Patent GB-571436-A (GB)
Title: Improvements relating to the heat treatment and plasticisation of rubber
IPC: C08J11/12
Filed: 1942-04-16
Abstract: In plasticising vulcanized rubber by heat treatment, the rubber is subjected to a sudden rise in temperature so that the gases in the rubber cause it to expand and become porous.  The rubber may be conveyed on a wire mesh belt or on wire mesh trays through a chamber supplied with superheated steam or burnt gases to obtain a temperature of 200-270 DEG  C. and may be cooled on emerging by quenching with cold water.  In an example, the rubber is heated for 18 minutes.  The rubber may be heated by electrical diathermic methods.
Patent GB-437781-A (GB)
Title: Improvement in rotary valves for internal combustion engines
IPC: F01L7/02
Filed: 1935-02-16
Abstract: 437,781. Valves. ECKBO, E. J., 6, Kongensgate, Oslo, Norway. Feb. 16, 1935, No. 5114. Convention date, May 11, 1934. [Class 7 (vi)] A rotary valve comprises a sleeve 10 operating between a stationary core 6 and casing 2 so as to control axially staggered inlet ports 4 and exhaust ports 5, which are connected through correspondingly spaced ports in the valve to the cylinder port 3, through recesses 8, 9 formed in the core 6, a cooling-fluid being circulated through the core. The port 3 is wide enough to communicate with both ; or there may be two ports 3 side by side. Also the two recesses 8, 9 may be combined in one.
Patent GB-537797-A (GB)
Title: Ultra wide-band low-loss band-pass filter constructed from piezo-electric crystal or crystals and stabilized negative impedance element or elements, for radio and television systems
IPC: H03H11/10
Filed: 1940-03-19
Abstract: 537,797. Impedance networks. CHAKRAVARTI, S. P. March 19, 1940, No. 5119. [Class 40 (iii)] A filter for passing a wide frequency band with low attenuation comprises one or more combinations of a piezo-electric crystal with a stabilized negative resistance element. A two-terminal filter consists of a crystal C in series, Fig. 1, or in parallel with a tetrode Y-Z or other device acting as a negative resistance. The latter, which may or may not be tuned by external capacitance to the resonant frequency of the crystal, presents an effective impedance made up of the negative resistance -Ra shunted by a total capacitance Cs and by the inductance L of a blocking choke. In one form of symmetrical lattice filter, Fig. 3, the series combination of Fig. 1 is employed as one pair of arms and the shunt combination as the other pair. In other forms, the series or shunt combination is used in both pairs of arms, Figs. 4, 5 (not shown), or the series or shunt combination is used in one pair of arms, while a series or parallel tuned circuit is used in the other pair of arms, Figs. 6-9 (not shown). In all these arrangements, each negative resistance element may be tuned to the resonant frequency of the crystal in the same arm or in the conjugate arm. The individual elements and leads are screened, and an earthed screen E encloses the whole system. The Specification compares the band-width, attenuation and cut-off properties of the various embodiments with those of the ordinary lattice-type crystal filter.
Patent GB-903859-A (GB)
Title: Improvements in or relating to fish baskets
Filed: 1961-02-11
Abstract: 903,859 Making wire baskets. REEVES, L. March 13, 1961 [Feb. 11, 1961], No. 5167/61. Class 83 (2). [Also in Group XVII] A wire fish basket comprises upper and lower rims connected by double members each coiled round the upper rim and each having a portion above that rim to form a hand grip, these double members extending down the sides to coil round the lower rim and then to extend into the bottom in which they then bend in a transverse direction, at least one of the double members being bent outwards to continue transversely to and round the lower rim and then up the sides to the upper rim to which its ends are welded, and welded connections being made at its bends in the bottom with the bends in the other double member, which bends inwards at these positions, or to two corners of a rectangle of wire, the other two corners of which are similarly welded to corners of the other double member which in this case is also bent outwards to continue transversely to and round the lower rim and then up the sides to the upper rim to which its ends are welded. The upper rim 1 and lower rim 2 are of heavy gauge aluminium wire and are each welded together at 3. The part of the double members A and B which forms the hand grips is wound with a lighter gauge wire 4. Fig. 1 shows a circular basket in which the sides and the bottom are covered with an aluminium mesh 16. A wooden shoe 18 is positioned within the lower rim under the mesh and is bolted to a thinner wooden plate 20 above the mesh. Fig. 5 shows a frame for an oval basket which comprises two similar double members C and D and a wire rectangle 33 which is welded at its corners to the bends joining the parts 28 and 29 of each of the double members.
Patent GB-1512882-A (GB)
Title: Bladed rotor assembly for a gas turbine engine
IPC: F01D5/30
Filed: 1976-02-11
Abstract: 1512882 Rotor blade fixing ROLLS-ROYCE Ltd 7 Feb 1977 [11 Feb 1976] 05335/76 Heading F1T A turbine or compressor rotor having blade roots 18 locked in axial slots by arcuate sideplates 20 engaging circumferential grooves 24 in projections 21, 23 includes a wedging member, e.g. wire 28, disposed in a respective groove 24 so as to act on a chamfered surface 26 of a sideplate under centrifugal force.
Patent GB-336924-A (GB)
Title: Improvements in the manufacture of cast glass plates and sheets
IPC: C03B13/02
Filed: 1930-02-17
Abstract: 336,924. Brancart, Y. April 27, 1929, [Convention date]. Addition to 336,921. rolling.-Relates to the method, described in the parent Specification, of preventing undulations in rolled glass plates by forming shallow impressions on the upper surface of the plates at the time of the rolling. According to the inven. tion, the plates are rolled by one or more smooth rollers, immediately after formation, in order to ensure that the impressions formed on the upper surface of the sheet disappear before the glass has become set.
Patent GB-212546-A (GB)
Title: Improvements in the production of fast dyeings and prints on fibrous goods and other materials capable of impregnation
IPC: D06P5/15
Filed: 1924-03-01
Abstract: In dyeing or printing with the leuco esters of vat-dyes described in Specification 186,057, a nitrite, particularly sodium nitrite, is substituted for the chromate used as oxidizing agent according to the parent Specification.  The nitrite is applied together with the leuco ester and the dyeing developed by passing through acid.  The Specification as open to inspection under Sect. 91 (3) (a) refers also to the following modifications of the processes of the parent Specification: (1) the padding of the fibre, especially in the case of wool, silk, leather, and animal fibres generally, with the leuco esters and oxidizing-agent is effected at elevated temperatures: (2) the development of the dyeings is effected by the action of the vapour of a volatile acid such as acetic or formic acid: (3) in the production of white reserve effects by printing on the padded fibre, before development of the dyeing, a hydrosulphite preparation, the latter is replaced by any other suitable compound such as a sulphite or a thiosulphate; if coloured reserves are required one of the following dyestuffs may be added to the printing paste instead of a vat dye: basic dyestuffs with tannin, mordant dyestuffs, albumen dyestuffs, nitrosamine red dyestuffs (using thiosulphate as the reserve), or any dyestuffs which can be fixed and can withstand the reserve agent.  This subject-matter does not appear in the Specification as accepted.
Patent GB-195239-A (GB)
Title: Improved process for carrying out endothermic gas reactions
IPC: B01J19/08
Filed: 1922-02-23
Abstract: In carrying out endothermic gas-reactions, the reaction mixture is passed rapidly and repeatedly round a circuit comprising a heating and a cooling device but not including an absorption vessel. Alternatively the process may be carried out by continuously withdrawing a portion of the treated gases while supplying an equivalent quantity of fresh reaction mixture to the circuit.  Solid substances may be circulated with the gases to increase the rapidity of cooling or to participate in the reaction if the speed of the gas-current is sufficiently high. The process is described by reference to the synthesis of nitrogen oxides from a gas-mixture containing, for example, two volumes of oxygen and one volume of nitrogen.ALSO:In the synthesis of nitrogen oxides, a gas mixture containing, for example, two volumes of oxygen and one volume of nitrogen is passed rapidly and repeatedly round a circuit comprising a heating and a cooling device but not including an absorption vessel. Alternatively the process may be carried out by continuously withdrawing a portion of the treated gases while supplying an equivalent quantity of fresh reaction-mixture to the circuit. Solid substances may be circulated with the gases to increase the rapidity of cooling or to participate in the reaction if the speed of the gas-current is sufficiently high.
Patent GB-556132-A (GB)
Title: Improvements in or relating to electric generators for constant current systems
IPC: H02P5/685
Filed: 1942-04-22
Abstract: 556,132. Controlling dynamo-electric machines. LANCASHIRE DYNAMO & CRYPTO, Ltd., and STANSFIELD, W. April 22, 1942, No. 5387. [Class 35] [Also in Group XXXVII] The field winding 6 of a constant current generator 2 is energized in opposition by a constant voltage source 3 and a variable voltage exciter 4, which has two field windings, of which 11 is in series with the generator and 12 is connected across the terminals of the generator. The winding 6 may be in two parts separately connected to the constant voltage supply 3 and the variable voltage exciter 4. The generator field may also comprise a series winding 5 to compensate armature reaction. As shown, the system may consist of the generator exciters 3 and 4 and a motor 1 directly coupled together. Alternatively the exciter 3 may be replaced by any other constant voltage source. According to modifications, the winding 5 may be omitted, and replaced by a shunt winding of moderate ampere turns, and a shunt winding may be added to the exciter 4. Fig. 3 shows an arrangement in which two generators 21, 22 supply banks of constant current motors 18, 19 as described in Specification 556,133, either in series or separately from one or both of the generators. The double pole and triple pole double throw switches 20, 25, 26 are used to connect one or other or both of the generators to one or both of the banks in series. Linked double pole double throw switches 27, 28 connect the constant voltage exciters of the motors to the sources 23, 24. An alternative arrangement is illustrated in Fig. 4 (not shown).
Patent GB-720311-A (GB)
Title: An improved thrust bearing for pillar cranes
IPC: F16C19/36
Filed: 1952-02-29
Abstract: 720,311. Thrust bearings. MASCHINENFABRIK AUGSBURG-NURNBERG AKT.-GES. Feb. 29, 1952 [March 16, 1951], No. 5391/52. Class 12 (1). A thrust bearing 3 of a pillar crane is positioned between the top of the pillar 1 and the turning part 2. The bearing is of a type which may take up vertical loads due to the crane weight and its load, and horizontal forces produced by the moment of the load and counterweight. In order that the line of action 4 of the resultant force shall remain within the circle of the bearing rollers the axial loading of the bearing is increased by a compression spring 7 supported against an adjustable nut 9 and bearing on a ball bearing 10 which is secured to the part 2 supported by the bearing 3. Instead of a spring, other compression means may be employed.