baber/WOPTO huggingface dataset:
Patent GB-797168-A (GB)
Title: Improvements in or relating to ferrite material for use at microwave frequencies andto methods of manufacturing such material
IPC: H01F1/34
Filed: 1956-06-13
Abstract: 797,168. Magnetic materials. PHILIPS ELECTRICAL INDUSTRIES, Ltd. June 13, 1956 [June 16, 1955], No. 18262/56. Class 38 (2). Ferrite material for use at microwave frequencies is made by sintering at between 1200‹ and 1400‹ C. a mixture of MnO, A1 2 0 3  and Fe 2 0 3  in mol. percentages of 50-57, 2-25 and- 21.5-47.5 respectively. The oxides may be replaced by material such as carbonates which convert into oxides on heating. In an example the materials were ball-milled for 10- 15 hours in water or alcohol, prefired in air at 1000‹ C. for two hours, cooled, reground for 10-15 hours, sintered at 1350-1375‹ C. in air for four hours and cooled in air. Various starting proportions, sintering temperatures and magnetic properties of the final products are specified. The sintering may be in oxygen.
Patent GB-1551527-A (GB)
Title: Method of apparatus for production of multiple gauge strip
IPC: B23D1/02
Filed: 1977-05-02
Abstract: Metal-strip material with several profile thicknesses in cross-section is produced by the basic material (M) being pulled in a first step of the method through a shaping attachment with a shaping tool (11) set in such a way that maximum material removal as a function of the tensile strength of the basic material is effected in the process. This material removal is limited to an area of 5 to 50% of the entire surface of the basic material (M), and the volume reduction is in the area of 10-60% of the original cross-section. In a second step of the method, the preformed metal strip (30) is pulled through a drawing tool (31) which gives it its final profiled shape. Here, the metal strip (30) is coated with a lubricant at the entrance of the drawing tool. The consistency of the lubricant is selected in such a way that no direct contact takes place between the metal strip (30) and the drawing tool or its area (38) of cross-sectional reduction. <IMAGE>
Patent GB-1370075-A (GB)
Title: Injection moulding
IPC: B29C45/00
Filed: 1972-04-20
Abstract: 1370075 Injection moulding IMPERIAL CHEMICAL INDUSTRIES Ltd 2 April 1973 [20 April 1972] 18378/72 Heading B5A In a "sandwich moulding" process at least one of the mould members comprises a slidably mounted retractable component 5 which is in the non-retracted position (Fig. 2) during injection of the skin material, but is retracted before or during injection of the core material, but before the mould cavity is filled (Fig. 4, not shown). In one example (Figs. 1-4) the mould is for making a 3-bladed fan and the invention reduces the disparity in skin thickness at the hub periphery 3 and the blade extremity 4. Figure 5 shows a mould 10, 11 for making a shoe sole and comprising two retractable mould members 12, 13 adjacent the heel portion 14. On injection of a foamable core material (18) the members 12, 13 are retracted. The result is a thicker skin in the toe portion than in the heel portion. A further small charge (19) of skin material may be injected and the mould members 10-13 moved apart to permit the core material to foam. Figure 8 shows a female mould member 21 provided with a central sprue 22 and a pair of retractable bars 23 which are in contact with an opposed male mould member (24) Fig. 9 (not shown) during injection of skin material. After retraction, the bars 23 lie flush with the surface of the mould member 21. The result is an even distribution of skin material in the final moulding. In a further' example (not shown) the retractable mould components are flush with the mould surface in their non-retracted position so that in the retracted position the flow path is widened. A protruding component may be retracted more than or less than is necessary to make it flush thereby producing protrusions or depressions in the final moulding. Separate sprue channels for the skin and core materials may be used. Numerous examples of suitable thermoplastic and thermosetting moulding materials are given. Instead of enlarging the mould cavity to permit foaming the pressure on the core material may be reduced by retracting the injection ram.
Patent GB-177449-A (GB)
Title: Improvements in or connected with pneumatic tyres
IPC: B60C5/04
Filed: 1921-07-07
Abstract: 177,449. Goble, B. G. July 7, 1921. Air tubes and chambers.-An inner tube 5 of the compression type is formed with an annular depression 16 in the tread portion. In the deflated condition, the inner periphery 7 of the tube 5 is of greater circumferential length than the rim 8 so as to be clear of the tyre beads as shown. The curvature of the tube sides being less than the curvature of the casing 6, spaces 13 are left as shown, the tube 5 touching the inner surface of the casing 6 at four places A, B, C, D. The casing 6 has transverse grooves 17 to allow escape of air at the rim 8.
Patent GB-421514-A (GB)
Title: Improvements in or relating to table knives and like implements comprising a blade affixed to a haft
IPC: B26B3/02
Filed: 1934-06-22
Abstract: 421,514. Knife handles. MARSDEN, J., 98, Button Lane, Sheffield. June 22, 1934, No. 18454. [Class 61 (i)] A knife &c. handle is formed from a long strip of metal bent to U-shape to form legs 30, 32, the forward ends of which have lateral lugs such as 26, 28 to embrace the tang 12 of the knife blade 10 ; tang 10 has lateral projections 18, 20 retained in engagement with holes 34, 36 in the legs 30, 32 by a clamping ferrule 38. In a modification, Fig. 5, the handle is formed from U-section strip bent to form legs 30, 32 and the tang 12 is of outwardly tapering form. In another modification, Fig. 7, the handle is formed of wire grooved at 42 to receive the edges of the tapering tang 12 and a filling piece 43 is located between the legs 30, 32.
Patent GB-874596-A (GB)
Title: Electrical switchboard assembly
IPC: H01H1/20
Filed: 1959-05-29
Abstract: 874,596. Switchboards; electromagnetic relays. TELEMECANIQUE ELECTRIQUE. May 29, 1959 [June 2, 1958; April 28, 1959], No. 18465/59. Class 38 (5). [Also in Group XXXVI] A switchboard comprises a number of blocks 2 arranged to form cable channels mutually at rightangles and has slots 5 in the projecting edges of each block. The blocks are hollow to accommodate part of the electrical gear mounted thereupon. The gear is wired up by cables 6 having two part couplings 9 (see also Group XXXVI). A terminal block 8 is also provided for external connections and the spaced wires are joined by disconnecting members (not shown). As disclosed, an electromagnetic relay forms part of the control gear and the block 12 accommodates the magnet coil 104 and springs 100 on which the moving magnetic assembly 112 is carried. A further casing 109 carries the various fixed contacts as shown and they are formed as one part of the two-part coupling. The moving magnetic assembly has an insulating member secured to the top thereof and includes pillars 113 in which the moving contacts 121 are spring-loaded as shown in Fig. 19 in such a manner that they are reversable from a normally open position to a normally closed position and may align themselves with the fixed contacts owing to the provision of arcuate portions 121b.
Patent GB-810554-A (GB)
Title: Apparatus for controlling the level of a flowable material in a container
Inventor: COLES RALPH VERNON
IPC: G05D9/12
Filed: 1955-06-27
Abstract: 810,554. Automatic level control systems. ROBERTSHAW-FULTON CONTROLS CO. June 27, 1955 [Oct. 15, 1954], No. 18551/55. Class 38 (4). , In a system for automatically controlling the level of fluent material in a container the supply of material to the container is cut off when the level reaches an upper limit by a relay hoving a winding in the anode circuit of an electron oscillator valve which is rendered oscillatory or not by the level of material in the container to operate the relay which also controls the connection of a reactance in the oscillator circuit to ensure that the relay operation is maintained until the material reaches a lower level. In Fig. 1, when fluent material supplied by a pump 18 to a container 16 reaches a level B the capacity between a vertical probe 14 and the container is sufficient to stop oscillation of a valve 22, thereby increasing the energization of a relay 12 so that it opens contacts 70 to stop pump 18. The closing of contacts 76 of relay 12 connect a variable capacitor 20 in the circuit so that extraction of the fluent material for use through a conduit 90 can reduce the material in the container to a level A, dependent on the setting of capacitor 20, before oscillation re-commences and pump 18 is re-started. In a modification a pair of horizontal probes connected together, and respectively situated at the upper and lower limits of level, replace probe 14. In another modification the increased capacity between the probe and the container starts oscillation at the upper limit of level and the consequent deenergization of relay 12 is arranged to stop the pump.
Patent GB-1380773-A (GB)
Title: Method and apparatus for chilling mould elements
IPC: B29C35/00
Filed: 1972-04-21
Abstract: 1380773 Cooling moulds OWENS-ILLINOIS Inc 21 April 1972 [23 April 1971] 18613/72 Headings F4H and F4U A mould 20 adapted to form articles from heated materials is cooled by a first low temperature, low viscosity fluid coolant under pressure, e.g. R11 at from -40 to -60 F., which is cooled in a heat exchanger 36 by a second fluid coolant, e.g. R502, in a second coolant loop wherein the second coolant is evaporated by an expansion valve 120 within the heat exchanger 36 to absorb the heat from the first coolant and the generated vapour is thereafter passed to a two stage compressor 82, 84, a condenser 98, and subcooler 102 before recirculation to the heat exchanger.
Patent GB-143437-A (GB)
Title: Improvements in and relating to traffic controlling apparatus for railways and the like
IPC: B61L1/18
Filed: 1919-07-28
Abstract: 143,437. McKenzie, Holland, & Westinghouse Power Signal Co., Dyer, H. H., and Davey, R. G. July 28, 1919. Combined electrical and mechanical systems.- At the intersection of two tracks, one of which is parallel to an adjacent track, a track relay 8 is connected to the crossing sections 5, 6 and arranged to control the relay 9 of the block section 10, 11, 13, 14, 15 in the rear of the crossing section in such a manner that the relay 9 after de-energization by a train passing through the section 10, 11 can only be re-energized after the train has passed the crossing section 5, 6, but a train passing along the crossing section on the load 4 does not de-energize the relay 9. The relays 8, 9 control circuits as shown to locking- magnets 21, 24 which control, respectively, locks on the hand levers operating the signals 26, 27 for the main and branch roads.
Patent GB-1432618-A (GB)
Title: Polyurethane foams
IPC: B32B5/18
Filed: 1973-04-18
Abstract: 1432618 Filled polyurethane foams E L CLAY and J L BAKER 18 April 1973 [24 April 1972 2 April 1973] 18670/73 Heading C3R Filled polyurethane foams comprising a shell of relatively higher density extending inwardly from the surface or surfaces thereof and an internal core of relatively lower density are prepared by foaming within a closed mould a composition comprising (a) a polyurethane foam precursor, including a blowing agent, (b) a particulate filler uniformly distributed in the precursor and in a weight ratio thereto of at least 1 : 3, the majority of particles of filler being at least 10 microns in size; and (c) a density distribution control agent which is an organic liquid of b.p. at least 40‹ C., which is substantially inert toward the foaming reaction and which dissolves in the precursor to reduce the viscosity thereof. The mould may be provided with a pressure barrier member therein to cause the generation of an internal, densified region in the resultant moulded product at the barrier during foam formation. Suitable fillers are fly ash, glass compositions, calcium carbonate, silicon dioxide, iron oxides, feldspar, dolomite, barite and anhydrite. The density distribution control agent is preferably a halocarbon, e.g. carbon tetrachloride, trichloroethylene, methylene chloride, chloroform, methyl chloroform and perchloroethylene. The sandwich-type products may be used for structural applications, decorative wall panels and non- structural furniture parts.
Patent GB-859964-A (GB)
Title: Improvements in or relating to flower pots
Inventor: PEARCE-SMITH STANLEY
IPC: A01G9/02
Filed: 1958-06-11
Abstract: 859,964. Plant pots. PEARCE-SMITH, E. F. June 4, 1959 [June 11, 1958], No. 18673/58. Class 6(2). A plant pot 1 of a synthetic, thermoplastc material is formed in its base with drainage holes or slots 7, and is provided on the outer surface of its base with protruberances 9 for raising the base clear of the supporting surface and thereby facilitating the efficient drainage of water through the holes or slots 7. The pot is also formed near its rim 4 with a protruding band 5 to enable a number of such pots to be stacked one inside another.
Patent GB-1441132-A (GB)
Title: Sample collectors for use with a well tool carried by a tubular string
IPC: E21B49/08
Filed: 1973-05-29
Abstract: 1441132 Well fluids sampling LYNES INC 29 May 1973 [14 June 1972] 18685/75 Divided out of 1441131 Heading E1F The disclosure corresponds with that of the parent but the claims are directed to a sample collector with an inlet valve operable by a pressure-responsive control valve located down hole in a tubing string through which the collector is run.
Patent GB-689703-A (GB)
Title: Improvements in or relating to injection syringes
IPC: A61M5/178
Filed: 1950-07-26
Abstract: 689,703. Hypodermic syringes. MEDIGLASS AKT.-GES. July 26, 1950 [April 14, 1950], No. 18696/50. Class 81 (ii). An injection syringe comprises a pump cylinder 10 of transparent material having at the end adjacent the needle an end wall 12 formed integrally with the pump cylinder and provided with a passage 11 in which is tightly fitted a connecting element 15 serving as a carrier for the injection needle, the connecting element being of material of the same kind as, or of a kind similar to, that of the pump cylinder and being secured against axial displacement in the passage. As shown in Fig. 1, the element 15 and the passage 11 are tapered and a nut 17 is threaded onto the element. In a modification, Fig. 2, the element has a part-spherical seating surface 18, which fits into a recess in the end wall 12, and is provided with a thickening coating 19. In further modifications the element is cemented or fused in position.
Patent GB-813187-A (GB)
Title: Laminates and process for the production thereof
Inventor: HAHN ROBERT HALL
IPC: B32B15/08
Filed: 1956-06-16
Abstract: Thermoplastic sheet materials comprise, in stated proportions: (a) polyvinyl chloride (mol. wt. 30,000 to 100,000), polymerized ester of palm-nut oil acids with ethylene glycol or propylene glycol, dioctyl phthalate, cadmium-barium laurate stabilizer and triphenyl phosphate; (b) vinyl chloride-acetate copolymer, the same polymerized ester as in (a), tricresyl phosphate, lead silicate and lead stearate; and (c) polyvinyl chloride and modified rosin.  An adhesive composition comprises, in stated proportions: vinyl chloride-acetate copolymer, alkyd type ester of balsamic rosin, dioctylphthalate, toluol, methyl ethyl ketone and methyl isobutyl ketone; and, if desired, a modified rosin compound.  The sheet materials and adhesive are used in the preparation of laminates (see Group VIII).
Patent GB-1244487-A (GB)
Title: Improvements relating to floor coverings
Inventor: MARSHALL DONALD GEORGE
IPC: D06N3/00
Filed: 1968-04-20
Abstract: 1,244,487. Laminate. DUNLOP HOLDINGS Ltd. 18 April, 1969 [20 April, 1968], No. 18766/68. Heading B5N. [Also in Divisions B1-B2 and C3] A floor covering comprises a surface sheet of a cellular plastics material which has been compressed biaxially by compression forces acting in or parallel to the plane of the sheet and is retained in the compressed state by means of a sheet material adhered to a face of the sheet. Suitably an elastic sheet material is stretched, adhered to the sheet of cellular plastics material and the stretching forces on the sheet are then released. The cellular plastics material is suitably a polyurethane foam which may be reticulated or is a foam of poly-(vinyl chloride), polyethylene or polypropylene. The elastic sheet material may be formed from natural, synthetic or silicone rubbers or stretch fabric.
Patent GB-901886-A (GB)
Title: Improvements relating to electronic counting chains
Inventor: WHITE EDGAR IAN
IPC: H03K23/00
Filed: 1958-06-12
Abstract: 901,886. Electronic counting - apparatus. WESTINGHOUSE BRAKE & SIGNAL CO. Ltd. June 12, 1959 [June 12, 1958; Nov. 13, 1958], Nos. 18769/58 and 36528/58. Class 106 (1). [Also in Group XL (c)] A multi-stable-state chain of bi-stable stages in which each stage comprises a pair of transistors cross-coupled between their bases and collectors has couplings between the stages comprising a variable impedance shunt path which is controlled by a given stage so as only to allow switching pulses to be applied to the next stage in the chain when the given stage is in a predetermined one of its stable states. Fig. 1 shows a multi-stable counting chain of which each stage is constituted by a bi-stable pair of PNP junction transistors having their bases and collectors cross-connected. The state of conductivity of each stage being controlled by negative going stepping pulses applied to leads 5, 5A under the control of which a given state of stability is progressed along the chain. If it is assumed that normally transistors TR1 A, B, C, &c. are non-conductive and transistors TR2 A, B, C, &c. are conductive, then normally the transistor TR3C will be conductive since its base is held negative by the collector of TR1B. This represents a low impedance shunt across TR2C so after a negative stepping pulse on lead 5 has changed over stage A and C at the end of the pulse stage C reverts to its normal state. When TR1A conducts it removes the negative voltage from the base of TR3B which cuts off so the next pulse which is on lead 5a triggers stage B and the next pulse reverses the state of stage C so that the sequential changing continues down the chain. In a modification, Fig. 2, the normally conducting transistor of each stable pair functions as the variable impedance for the previous stage so that the pulses are steered to trigger the next stage in the chain. In the modification shown in Fig. 5, diodes D1, D2, D3 connect the collector of the normally conducting transistor of a given stage to the corresponding transistor of the following stage in the chain. Thus since the collector of transistor TR2B is clamped at earth the stepping pulses on leads 5, 5A are ineffective on stage B until stage A has been changed over when diode D1 becomes non- conductive. Fig. 3 shows one stage of a binary counter comprising two cascaded bi-stable pairs the pulses to be counted being fed alternately to lines 6, 6A. Thus, if initially transistor TR4 is non-conductive and TR5 is conductive, a negative pulse at 6 is shunted via TR5 and thus passes via lead 7 to TR6 to reverse stage E. The next pulse at lead 6A is shunted via diode a D3 and transistor TR6 so is active only via lead 9 to reverse stage D. Thus, each one of the bi-stable stages D, E is changed to the state opposite to that prevailing in the other stage. The cycles of an A.C. waveform may be counted by inverting the positive half-cycle, Fig. 4 (not shown).
Patent GB-1019063-A (GB)
Title: Improvements in or relating to electrical data storage apparatus
Inventor: COX WILLIAM JOHN
IPC: G11C21/00
Filed: 1961-05-24
Abstract: 1,019,063. Electromagnetic delay line stores. A. V. ROE & CO. Ltd. March 26, 1962 [May 24, 1961], No. 18815/61. Heading G4C. Digital data is stored in an electromagnetic delay line by transmitting along the line datarepresenting signals as first pulses of one polarity and simultaneously retransmitting said signals along the line as pulses of opposite polarity interposed between said first pulses. The delay line storage capacity is thus doubled. As described, an electromagnetic delay line 1 for storing a word of 2N + 1 digits is terminated by a resistor 2 and has an electrical length of N + ¢ digits. Data to be stored, represented by positive pulses or the absence of a pulse, to a total of 2N + 1 digit periods, is applied to an input 3 connected to an " or " circuit 4. The output of the " or " circuit 4, together with positive clock pulses from a source 12, is applied to an " and " gate 7 connected via an " or " circuit 9 to the input of the delay line 1. The output of the delay line 1 is connected to a first inverter-amplifier 17 responsive only to positive pulses, the negative output pulse thereof being applied to an " and " gate 13 fed also with negative clock pulses from the source 12, the negative clock pulses being interlaced with the positive clock pulses supplied to the gate 7. The output of the " and " gate 13 is connected via the " or " circuit 9 to the input of the delay line 1. The output of the delay line 1 is connected also to a second invert-amplifier 18 responsive only to negative pulses, the output thereof being connected to the input of the delay line via the gates 4, 7, 9. In a second embodiment (Fig. 3, not shown), the electrical length of the delay line is such that the pulses of one polarity are reflected back along the line as pulses of the other polarity interposed in the gaps between the advancing pulses of said one polarity.
Patent GB-654948-A (GB)
Title: Improvements in or relating to sealing devices for relatively rotatable parts
IPC: F16J15/36
Filed: 1947-07-15
Abstract: 654,948. Stuffing-box substitutes. CRANE PACKING, Ltd. July 15, 1947, No. 18833. Convention date, Aug. 12, 1946. [Class 122(v)] In a sealing device in the form of a unit between relatively rotatable members 10, 13, a sealing ring 33 is located at the open side of an annular shell 22, constituted by an inner cylindrical wall 25, an outer cylindrical wall 23 and a connecting radial side wall 24, and housing an endwise deformable tubular member 27 having radial end flanges 28, 29 each having a cylindrical inner and outer surfaces; a helical spring 37 is compressed between the flanges 28, 29, one 28 of which bears against the radial wall 24 and the other 29 being in sealing relationship with one face of the ring 33, while the outer wall 23 of the shell 22 is fitted non-rotatively into one 13 of the members 10, 13 and a step 26 in one of the walls of the shell 22 closely fits one of the cylindrical surfaces of the member 27. The step 26 is in the radial wall 24 adjacent the inner cylindrical wall 25 and forms a ledge on which the flange 28 may fit tightly or loosely. Ferrules 38, 39 are interposed between the ends of the spring 37 and the flanges 28, 29 and may radially compress the member 27 which has one or more folds 30 between the flanges 28, 29. In a modification is which the step is in the outer cylindrical wall close to the outer cylindrical surface of one of the flanges, a space is formed between the step and the housing in which packing is fitted. To prevent relative rotation the ring 33 has a lug and slot connection with the shell 22 which latter may be of brass or stainless steel.