baber/WOPTO huggingface dataset:
Patent GB-142098-A (GB)
Title: Improvements in vacuum brakes
IPC: B60T8/52
Filed: 1920-04-19
Abstract: 142,098. Hardy, Geb. April 19, 1919, [Convention date]. Fluid-pressure. - In vacuum brakes for railway trains having means whereby the increase in the drag of the brake shoes with diminishing speed is used to throw a supplemental brake cylinder (or brake cylinders) out of action, this brake cylinder is operative in service as well as in emergency application, and is cut off from the train pipe before its two chambers are connected to throw it out of action. The principal and supplemental brake cylinders 2, 5 with their reservoirs 3 are connected to the trainpipe 1 by pipes 31, 11 respectively, and are connected by the rod 4 to the brake shoes 7, which are suspended from a lever 9. Quick action valves 28 are preferably provided. Interposed in the connexions of the brake cylinder 5 is a valve mechanism 12 which, as shown in Figs. 1 and 2, comprises flap valves 15, 16 each with a stem or arm 26, 27 arranged for engagement by a projection 25 on a rod 17 connected to a three-armed lever of which the arms 20, 21 normally rest against fixed abutments 22, 23 whilst the arm 19 is connected to the lever 9. A diaphragm 24 exteuds between the rod 17 and the valve casing. In making an application of the brakes, air admitted to the train-pipe 1 flows by way of the valve 15 and pipe 13 to the lower chamber of the brake cylinder 5, the piston of which is thus actuated. When, by reason of the increase in the co-efficient of friction with diminishing speed, the drag of the brake shoes becomes sufficient to overcome a spring 10, the lever 9 turns the valve lever about one or other of the abutments 22, 23, thereby sliding the rod 17 so as first to allow the valve 15 to close and cut off the brake cylinder 5 from the train-pipe 1 and then to open the valve 16 to connect the lower and upper chambers and reservoir of this cylinder, whereby it is rendered inoperative. In service applications, the drag of the brake shoes does not reach the value necessary to throw the brake cylinder 5 out of action. As the valve 15 is only closed by the drag of the brake shoes, the cylinder 5 is operative in all applications of the brakes. In modified forms of the valve mechanism 12, poppet valves 35, 36, Fig. 3, actuated respectively by a lever 38 and a pin-and-slot 36<1>, or ball valves 39, 40, Fig. 4, are used. According to the Specification as open to inspection. under Sect. 91 (3) (a) a multiple-way cock is used. This subject-matter does not appear in the Specification as accepted.
Patent GB-1192282-A (GB)
Title: Mirror
Inventor: HAGG BENGT OLAV
IPC: H04N3/06
Filed: 1968-03-06
Abstract: 1,192,282. Making metallic mirrors. BOFORS A.B. 6 March, 1968 [6 March, 1967], No. 10973/68. Heading B3A. [Also in Divisions C7 and G2] A mirror, of regular polygonal cross-section, comprises, as shown in Fig. 2, a one-piece tempered and aged steel prism having a highly reflective metallic coating on each facet. The mirror is made by shaping a steel blank into a preform block of roughly polygonal shape, tempering and ageing the preform, machining it to a final regular polygonal prism having planed peripheral facets, and applying a metallic coating, e.g. aluminium or gold, to said facets by cathode atomization or electrolytic deposition.
Patent GB-581496-A (GB)
Title: Improvements in and relating to racquets and strings therefor
IPC: A63B51/02
Filed: 1944-06-09
Abstract: 581,496. Racquet strings. DU PONT DE NEMOURS & CO., E. I. June 9, 1944, No. 11057. Convention date, June 11, 1943. Drawings to Specification. [Class 109] A racquet string comprises a cord formed of a synthetic linear condensation product and composed of strands twisted together, each strand consisting of filaments twisted together, the cord having an adherent abrasion-resistant and fatigue-resistant coating. Both the cord core and the coating may be formed of a synthetic superpolyamide, such as polyhexamethylene adipamide, and the coating may constitute from 20 per cent. to 40 per cent. by weight of the cord. In one method of making the string, six 210-denier 1-turn S-filaments are twisted together 6.2 turns S to form a strand, and six such strands are twisted together 2.7-turns Z to form the cord. The coating is applied in a number of separate coats, and the coating solution consists of an interpolyamide prepared from hexamethylenediammonium adipate, hexamethylenediammonium sebacate and caprolactam. The polyhexamethylene adipamide forming the cord may be treated in the relaxed condition with boiling water or with aqueous phenol to improve the impact strength.
Patent GB-1345247-A (GB)
Title: Handling crates
IPC: B65D1/24
Filed: 1971-04-23
Abstract: 1345247 Plastics crates SOC AMI 23 April 1971 [28 April 1970 6 Nov 1970] 11074/71 Heading B8P A bottle crate of plastics materials has ribs 16-29 on its underside in the form of a chequerboard pattern with additional ribs 1-12 in the form of a circle or other closed figure providing a discontinuous edge on the underside. Internal cross-bars 38 may be provided inside each circle. Pairs of slots 30, 30<SP>1</SP>-36, 36<SP>1</SP> enable superposed crates to be stacked when offset or turned through 90 degrees.
Patent GB-776846-A (GB)
Title: Spring drum apparatus
IPC: B25H1/00
Filed: 1955-04-18
Abstract: 776,846. Spring drum apparatus. CHICAGO PNEUMATIC TOOL CO. April 18, 1955 April 27, 1954], No. 11087/55. Class 78 (2). A spring drum apparatus has a cable drum housing 17, a cable drum 37 arranged to enclose spring devices 44, each such device including a spring container 48 rotatable on the shaft 29 and a spring 47 affixed to both shaft and container. As shown, each spring 47 connecting shaft 29 and its respective container 48 is wound up by worm and worm gear so that its cam 51 presses against its respective spring- influenced plunger 66 to cause arm 62 to be withdrawn inside cable drum 37. The latter then acts as a normal spring drum until a spring breaks, at which point the plungers 66 force out arm 62 through slot 63 formed in drum 37 to engage lugs 65 formed on the stationary housing 17 and support the load on the cable.
Patent GB-1458619-A (GB)
Title: Transparrency preparation
IPC: B41M5/20
Filed: 1974-03-13
Abstract: 1458619 Transferring images XEROX CORP 13 March 1974 [14 March 1973] 11152/74 Heading B6C [Also in Division D2] An image is transferred on to a transparent support from an electrosensitive element comprising a layer of transferable material under an electrically-removable layer (see Division D2), by first imaging the electrosensitive element, placing the transparent support in contact with the imaged layer of the electrosensitive element which has the transferable layer exposed in the imaged areas, applying heat and/or pressure, and stripping the electrosensitive element from the transparent support to leave the transferable material in image configuration on the support. The transferable material is generally electrically conductive particles, e.g. carbon, in a resin binder.
Patent GB-1106004-A (GB)
Title: Logic circuit
IPC: G06F7/502
Filed: 1965-03-16
Abstract: 1,106,004. Transistor logic circuits. RADIO CORPORATION OF AMERICA. 16 March, 1965 [16 March, 1964], No. 11195/65. Heading G4A. [Also in Division H3] A logic circuit comprises transistor means 20a, 20b, 20c, 20d, of one conductivity type and transistor means 30a, 30b, 30c, 30d, of the opposite conductivity type connected to provide circuit paths between first and second terminals 27, 38 and an output point 28. The circuit operates as an EXCLUSIVE OR function for binary " 1 " signals equalling +V at A or B applied to the gate electrodes of the transistors to give an output at terminal 28 also the circuit will operate as an EXCLUSIVE OR NOT circuit (PARITY CHECK) if binary " 1 " signals represent the signal level of zero volts, at 38 so that the output from 28 is then the complement of the EXCLUSIVE OR function. The transistor means can be insulated gate field effect transistors and can be formed as integral units. The circuit is arranged such that there is never a direct connection between terminal 27 at +V volts and zero potential at 38 and a different pair of transistors conduct for each of the four input conditions so that either the voltage + V or zero voltage are connected to the output 28. The connections between transistors 20a, 20b, 20c, 20d can be joined as can the connection between transistors 30a, 30b, 30c, 30d, (Figs. 2-4, not shown), without any effects on the circuit output. Thus integral units may correspond to transistor pairs 20a, 20b, 20c, 20d, 30a, 30b and 30c, 30d, each formed as a semi-conductor having a single conduction path between source and drain electrodes and having two insulated gate electrodes or may correspond to transistor pairs 20a 20c, 20b 20d, 30b 30d, 30a, 30c each having two conduction paths and two controlling gate electrodes. In another embodiment, (Fig. 6, not shown), the circuit acts as an EXCLUSIVE OR for zero voltage signals and as an EXCLUSIVE OR NOT (PARITY CHECK), for positive + V signals. The circuits can include an additional transistor having drain and source electrodes connected between the junction of transistors 20a 20b, 30a 30b, (Figs. 9 and 10, not shown), where carry functions (C, C) are obtained and the circuit operates as a half adder giving the sum output (S, S) at 28.
Patent GB-642084-A (GB)
Title: Improvements in and relating to the refining of metals
IPC: C21C5/32
Filed: 1945-05-03
Abstract: A process for refining molten metal, e.g. iron and steel or copper or copper-nickel matte, consists in projecting, from a nozzle spaced above the surface of the metal, an oxidizing fluid into the bath with a velocity such that a sufficient proportion of the fluid enters the metal there to react with and remove the oxidizable impurities in the metal, the fluid used containing not more than 30 per cent of nitrogen and between 70 and 98 per cent. oxygen.  The oxidizing fluid may be gaseous or liquid, and the jet has preferably a velocity of not less than 1,250 ft. per second and a pressure of not less than 50 lbs. per sq. inch.  A heat-giving substance such as carbonaceous material may be introduced into the bath before or during the introduction of the oxidizing fluid and the latter may be used as a vehicle for introducing the heat-giving substance.  The introduction of the oxidizing fluid may be used in conjunction with the normal Bessemer, openhearth, or electric furnace process, and may precede, accompany, or succeed the normal refining process.  There may also be blown in with the oxidizing fluid or by other means a readily-oxidizable alloy or element such as silicon, aluminium, calcium or magnesium, so as to increase the temperature locally where the jet impinges and start the oxidizing action more rapidly.
Patent GB-1356398-A (GB)
Title: Door selector
IPC: E05F5/12
Filed: 1971-04-24
Abstract: 1356398 Door selectors EREBUS MFG CO Ltd and J PICKEN 20 March 1972 [24 April 1971] 11238/71 Heading E2M A door selector for a pair of hinged doors (28, 29), Figure 2 (not shown), having rebated meeting edges, ensures the closure of the doors in the correct order and comprises a mounting 10 for attachment to the lintel, first and second movable abutments 12 and 16, having projected positions in which they project into the paths of first and second doors (28) and (29), respectively, and having retracted positions out of the paths of the doors, the first abutment 12 being arranged to be moved from its projected to retracted position by engagement with the first door (28) and the second abutment 16 being arranged in its projected position to prevent the closure of the second door (29), and actuating means to move the second abutment 16 to its retracted position when the first abutment 12 is moved into its retracted position. The actuation means comprises first and second beams 11 and 15, pivoted at 18 and 19, respectively, the abutments 12 and 16 being connected to their ends. The ends 20, 21 of the beams are stepped to enable the first beam 11 to cause the second beam to pivot and retract the abutment 16 when the first abutment 12 moves into its retracted position. The abutments can either be biased into their projected positions by gravity alone or with the assistance of a spring 22. The extent of projection of the abutments can be adjusted by means of screws 26 and 27, and the selector is so constructed as to be reversible for use with doors of the opposite closing order. The actuating means may alternatively take the form of two rack and pinion mechanisms (not shown), one such mechanism being associated with each abutment and the pinions being interconnected by a shaft. A further alternative actuating means comprises an electro-magnet (not shown) arranged to retract the second abutment upon actuation of a switch by retraction of the first abutment. A roller (not shown) may be provided on the first abutment or on the first door.
Patent GB-637873-A (GB)
Title: Improvements in or relating to steering gear for motor driven vehicles
IPC: B62D11/08
Filed: 1947-04-28
Abstract: 637,873. Friction clutches. TAPP, E. T. J., and DAVEY, J. April 28, 1947, No. 11326. [Class 80 (ii)] [Also in Group XXXI] Relates to a clutch mechanism provided on each wheel driving shaft of a motor vehicle for steering purposes (see Group XXXI). As shown the propeller shaft 12 has a pinion 11 which meshes with a gear 10 engaging through a splined hub 13 inner shafts 14 which are splined to receive carrier plates 16 each carrying a set of friction shoes 17 which are operated by wedge means 18 in known manner. The wedge means 18 are actuated by a pivoted lever 50 carrying a roller 48 engaging the end of a push-rod 46 mounted by a ball bearing 45 in the outer end of the carrier plate 16. A member 39 is secured to the carrier plate 16 by a diaphragm 41. The head 51 of the push-rod 46 engages a roller 52 mounted between two lever arms 53 pivoted at 54 to the carrier plate 16. The ends 55 of the lever arms 53 are pivotally connected to links 56 which are pivotally connected at 57 to a forked crank 58 on a rock shaft 59 rocking about an axis 61 on the carrier plate 16. Pivotally connected to another forked crank 60 is a connecting rod 62 which passes through the opening in the plate 16 and is pivotally connected at 63 with the wedge means 18. Two other forked cranks 67 on the rock shaft 59 are each pivotally connected to a lug 68 having an abutment 69 carrying the lower end of a compression spring 70, Fig. 2. The springs 70 tend to move the wedge means 18 to the left in Fig. 1 to engage the clutch whereas the push'rod 46 on moving to the right enables the wedge means 18 to be moved to the right under the action of controlling springs 77 to declutch. Each set of friction shoes 17 engage a drum 19, the hub 20 of which is secured to a tubular shaft 27 carrying a pinion 29 engaging a gear 81 on a shaft 82 carrying a road wheel or track (not shown). The exterior of each drum is'encircled by a brake band 78 operated by a lever mechanism 79 mounted on a pin 80 carried by a bracket 83 fixed to a gear casing 15. According to the Provisional Specification each clutch and brake band may be provided with independently-operated controls, or the controls may be interlinked so that uncoupling and braking on the desired wheel occurs.
Patent GB-1059233-A (GB)
Title: Improvements in and relating to polypropylene
IPC: C09D123/06
Filed: 1964-03-18
Abstract: A composition finding application as a coating composition for paper comprises an oxidized blend of amorphous polypropylene and at least one polyolefin wax having a viscocity of 100 to 20000 cps. at 125 DEG C.  The preferred waxes are polyethylene-isopropanol telomer, polyethylene-isobutanol telomer and polyethylene which may be a degraded and optionally hydrogenated product.  The composition of polypropylene and wax may be oxidized using oxygen or an oxygen-containing gas such as air, at from 100 DEG  to 200 DEG  C. The products may be formed into aqueous emulsions containing materials such as titanium dioxide, calcium carbonate or clay, and casein or starch.ALSO:A coating composition for paper comprises an aqueous emulsion of an oxidized blend of amorphous polypropylene and at least one polyolefin wax having a viscosity of 100 to 20000 cps. at 125 DEG C. Preferred waxes are polyethylene-isopropanol telomer, polyethylene-isobutanol telomer and polyethylene, which may be degraded and optionally hydrogenated.  The emulsion may contain particulate materials such as titanium dioxide, calcium carbonate or clay, and optionally casein or starch.
Patent GB-258308-A (GB)
Title: Improvements in thermostatic switches for controlling electric circuits
IPC: H01H37/56
Filed: 1926-03-02
Abstract: 258,308. Austin Lighting Co., Ltd., and Walker, C. B. March 2, 1926. Thermal switches, having a contact C mounted on a current-heated bimetallic coil A, have the co-operating contact F mounted on another bimetallic coil E so that changes in atmospheric temperature are compensated for. Fig. 1 shows one form in which the coil A is heated by current in a winding wound round it. Fig. 3 shows a modification in which the contact C is mounted on the outer ends of two flat bimetallic coils through which the current flows in series, the compensating coil E being also flat.
Patent GB-471613-A (GB)
Title: Improvements in or relating to composite articles and methods of making the same
IPC: C08J5/12
Filed: 1936-04-23
Abstract: A cement for indiarubber comprises a solution of indiarubber and partly polymerized mono- or di-vinyl acetylene containing also vulcanizing-agents and driers.ALSO:Natural or synthetic indiarubber is bonded to another material, such as a metal, by means of an intermediate film comprising polymerized mono- or di-vinyl acetylene or a homologue thereof. If desired, the intermediate film may be coated with a rubber cement before applying unvulcanized rubber thereto.  Preferably the intermediate film is obtained by drying of a solution of indiarubber and polymerized mono- or di-vinyl acetylene containing also vulcanizing-agents and driers.
Patent GB-166731-A (GB)
Title: Adhesive compositions
IPC: C09J107/02
Filed: 1920-04-27
Abstract: 166,731. Schidrowitz, P. April 27, 1920. Water-paints; coating-compositions applied melted.-Uncoagulated latex, fresh or preserved is mixed with a solution of glue, gelatine, casein, starch, dextrin, flour, gluten, &c., under such conditions that an adhesive composition results. The conditions are, the latex must be alkaline or neutral, of a suitable concentration (containing 4.40 per cent of rubber), and at a temperature not exceeding about 70‹ C., and the glue &c. solution must not be sufficiently acid to produce coagulation of the latex, its concentration must be between 2 and 40 per cent, and the temperature must not be too high. The glue may contain preservative or liquefying agents. The solutions are mixed in varying proportions, examples being given of 4 volumes of glue to one of latex, and one of glue to 4 of latex. These compositions are liquid when freshly made, and on cooling set to jellies which liquefy on warming. Films made of the composition on hardening are found to consist of almost pure glue on one side, and almost pure rubber on the, other, but the materials cannot be mechanically separated. Such films may be applied to leather, balloons, &c. and to surfaces generally to which rubber does not readily adhere.
Patent GB-1097405-A (GB)
Title: Improvements in or relating to electric lamp holders
Inventor: LEWIS HARRY STANLEY
IPC: F21Y101/00
Filed: 1966-03-17
Abstract: 1,097,405. Lamp-holders. ASHLEY ACCESSORIES Ltd. March 17, 1966, No. 11671/66. Heading H2E. An angled electric lampholder has a base in the form of a pattress 10. The lampholder may be formed in one piece or may comprise a lamp holder proper 11 and an adaptor member 12, the adaptor being secured to the pattress 10 by a screw-ring 13. The adaptor 12 has a flange 14 which fits into the pattress, and this flange has diametrically opposed lugs 15 which fit into pairs of recesses 16 in the wall of the pattress. The side of the pattress which is mounted on to a wall has holes 17 for receiving screws to fix the assembly on a wall, batten or conduit box. The pattress has " knock-outs " in its side wall and/or base for conductors.
Patent GB-389664-A (GB)
Title: Improvement in electric lamp holders
IPC: H01R33/06
Filed: 1932-06-07
Abstract: 389,664. Needle - point couplings. SHULMAN, H., 50, Philpot Street, London. June 7, 1932, No. 11790. [Class 38 (i).] In an electric lampholder in which connection with multicore electric cables is established by forcing on to pointed elements by means of a screw cap b, the base of the latter has two concentric ring-like projections al, a<2> and an outer ring a<3> to facilitate the connection. Specification 341,265, [Group XI], is referred to.
Patent GB-275337-A (GB)
Title: Improvements in or relating to the control of electrical circuits
IPC: H01H33/66
Filed: 1926-05-06
Abstract: 275,337. General Electric Co., Ltd., Kinnes, A., and Hunt, M. S. H. May 6, 1926. Sparking-preventing devices; electromagnetic switches.-The lamps 1 of an advertising sign are intermittently illuminated by means of an interrupter 3 operated by a motor driven cam, sparking at the interrupter being prevented by including in the circuit arrangement an electromagnetic switch 2. The interrupter 3 may comprise a mercury switch as shown tilted periodically by the cam, or it may be a blade movable by the cam between two contacts. In either case, one pair of contacts 7, 8 of the interrupter connected e.g. by a blob of mercury 6 bridges the contacts 11, 12 of the electromagnetic switch 2 and completes the circuit to the coil 5 of the switch 2, which thereupon closes its contacts 11, 12 and short circuits the contacts 7, 8 so that no sparking occurs at the latter when they are disconnected from each other. The other pair of contacts 9, 10. when connected by the mercury short circuit the retaining coil 5 so that the switch 2 opens and the lamps 1 are extinguished. The contacts of the interrupter 3 and switch 2 may be enclosed in envelopes evacuated or containing inert gas. In the example shown, a coil 4 is arranged in series with the contacts 7, 6, to assist the coil 5 to close the switch contacts 11, 12. Specifications 271,158 and 271,235 are referred to.
Patent GB-253674-A (GB)
Title: Improvements in or relating to castors for furniture and the like
IPC: B60B33/00
Filed: 1925-05-07
Abstract: 253,674. Riddell, E. May 7, 1925. Castors.-A castor of the pivoted type, wherein the pintle is mounted in a socket having a ball or other antifriction thrust niember at its upper end, has the horn piece 4 screwed upon the pintle to provide a vertical adjustment. A grub screw 6 retains the pintle within the socket. Specification 5590/09 is referred to.
Patent GB-292904-A (GB)
Title: Bromination products of 4, 4-dimethyl-6, 6-dichloro-thio-indigo, and a process of making the same
IPC: C09B7/10
Filed: 1928-04-23
Abstract: 292,904. Newport Co., (Assignees of Gubelmann, I., Oesch, J. B, and Havas, E.). June 25, 1927, [Convention date]. Thioindigo series. - 4: 4<1>-dimethyl-6 : 6<1>-dichlorthioindigo is treated in concentrated sulphuric acid solution with such an amount of a brominating agent, that less than 2 atoms of bromine are introduced. In an example, 4: 4'-dimethyl-6 : 6<1>-dichlorthioindigo is dissolved in sulphuric monohydrate and sufficient bromine added at ordinary temperature to give the monobrom derivative. It dyes cotton a red colour from a yellow vat. An increase in the concentration of the solvent acid facilitates the bromination. The Specification as open to inspection under Sect. 91 (3) (a) comprises also the production of the dibrom-4 : 4<1>-dimethyl-6 : 6<1>-dichlorthioindigo. This subject-matter does not appear in the Specification as accepted.