baber/WOPTO huggingface dataset:
Patent GB-265936-A (GB)
Title: Improvements in or relating to insulating protector devices for carbon brushes
IPC: H01R39/26
Filed: 1927-01-14
Abstract: 265,936. Soc. Anon. le Carbone. Feb. 10, 1926, [Convention date]. Brushes; brushholders.-An insulating cap for carbon brushes upon which the brushpressing member bears consists of a metal mount, the upper portion of which is embedded in the insulation wholly- or in part. In the form shown in Fig. 1, and in section in Fig. 2, a metal staple b, which fits over the brush, has the whole of its transverse member embedded in a plate of insulating material a such as the substance known by the registered Trade Mark " Bakelite," which is moulded in position. The stanle may be placed in a mould c, Fig. 4, having a. cavity into which the synthetic insulator a<1> is introduced in powdered form, the whole being heated after compression by means of a punch d. Fig. 5 shows a form in which the transverse member b has raised tongues e for engaging the insulation. In an alternative form, the members b are separate from one another and are independently embedded in the insulation by means of their bent-over upper ends.
Patent GB-1099771-A (GB)
Title: Envelopes
Inventor: OSBORN ERIC CHARLES
IPC: B65D27/32
Filed: 1964-01-10
Abstract: 1,099,771. Envelopes. SAMUEL JONES & CO. Ltd. Jan. 11, 1965 [Jan. 10, 1964], No. 1225/64. Heading B6A. An offertory envelope I having a front wall 6 and a back wall 7 is provided with a grippable portion 2, beyond which the contents 4 cannot protrude and formed by gumming the opposite internal faces of said walls in the regions of said grippable portion. The grippable portion may be severed by a machine by pulling along a line of weakness 5, which may be formed by perforations extending along both walls. The envelope may be sealed by a sealing flap 3 provided by a self-sealing adhesive. In another embodiment in Fig. 3 (not shown) two grippable portions are provided along two opposite edges and the line of severance may extend parallel to these portions. A sealing flap is provided on one of the remaining edges.
Patent GB-174086-A (GB)
Title: Process and apparatus for cracking hydrocarbon oils, coal tar and the like
Filed: 1922-01-14
Abstract: 174,086. Gulf Refining Co., (Assignees of Faragher, W. F., and Gruse, W. A.). Jan. 15, 1921, [Convention date]. Hydrocarbons, cracking; separate heater and evaporator apparatus.-In cracking hydrocarbon oils, lignite or coal tar or tar oils, in a still of the water-tube-boiler type, a rapid circulation of the oil through the heated tubes is effected, to avoid deposition of carbon in the tubes, by injecting gas or steam or by generating gas in such a way that the gas promotes the circulation. The still consists of an upper drum 1, supplied with oil, which may be preheated from a tank 10 in which a definite level is maintained, and two lower transverse drums 2, 4 connected to the upper drum by tubes 3, 5 and connected together by a series of furnace-heated tubes 6. Gas, which may be the gas formed during cracking, natural gas, or casing-head gas, or steam is injected into the shorter vertical tubes 5 through nozzles 14, or through a series of nozzles projecting into the lower ends of the tubes 6. Alternatively, gas may be generated in the tubes 5 by cracking the oil therein by an electric heater consisting of carbon rods or other resistances passing down the tubes 5 and connected at the bottom. To prevent short-circuiting owing to deposition of carbon on the rods, they may be separated by a sheet of porcelain or other insulating-material. The oil may be heated in the tubes 6 to a temperature below that required for cracking, and the cracking effected by the electric heater. A pressure of 60-500 lb. per sq. in. may be maintained in the apparatus by a valve beyond the condensers.
Patent GB-174090-A (GB)
Title: Improvements relating to screw propellers
IPC: B64C11/16
Filed: 1922-01-14
Abstract: 174,090. Oehmichen, E. Jan. 15, 1921, [Convention date]. Screw propellers. - The blades of a screw propeller have cylindrical surfaces, are wider at the root than at the tip, and are set approximately with a constant angle of incidence from root to tip. The blades have the leading edges A<1> B<1>, A<2> B<2> set at an angle with the shaft, and the extreme tips are formed spoon shape for producing a centripetal component of the flow of the fluid acted upon. The main part of the blade is generated by a straight line moving on a cylindrical surface. The rear edges are contained in planes parallel to the shaft and passing through the points A' or A<2>. The angle of incidence may be made to decrease progressively from root to tip by raising the generatrix at the root end.
Patent GB-100926-A (GB)
Title: Improvements in Regulating Devices for Gas or Vapour.
Inventor: WINN PHILIP
IPC: F23D14/48
Filed: 1916-01-27
Abstract: 100,926. Winn, P., and Wilkes, A. H. Jan. 27, 1916. Piston valves.-A valve for regulating the supply of gas or vapour for lighting, heating, or motive power comprises a transversely-arranged plunger having a flat end and a plain cylindrical operative part at least equal in diameter to the gas-way, and a stop for limiting the movement of the plunger. The gas-way is smooth and free from pockets or recesses, and the plunger may be slid to and fro directly by hand, or by a crank or lever attachment, or may be screw-threaded. Fig. 1 shows a screw-threaded plunger g arranged to regulate the nipple of a burner and having a smooth cylindrical part e. The screwed part of the plunger g works in a screw-threaded channel as shown, or may have part of its thread cut away. The movement qf the plunger is limited by the head of a screw k extending into a grooved part j of the plunger.
Patent GB-1480432-A (GB)
Title: Polyethers and their use as brake fluids
IPC: C09K23/42
Filed: 1975-01-13
Abstract: 1480432 Polyethers HOECHST AG 13 Jan 1975 [16 Jan 1974] 1339/75 Heading C2C [Also in Division C5] Novel polyethers having the formula wherein R is (C 1 -C 4 )alkyl, x and z are 1, 2 or 3, are prepared by the reaction of an ether of the formula ROÀ(CH 2 CHO) x H or a mixture thereof, with ethylene oxide and propylene oxide at an elevated temperature and pressure in the presence of an alkaline catalyst, by either (a) reacting an excess of the ether in a first reaction step with propylene oxide and, after removal of the excess starting ether, reacting the product obtained in a second reaction step with ethylene oxide, or (b) reacting ethylene oxide, propylene oxide and an excess of the ether, relative to the oxide mixture, and distilling the mixture under reduced pressure to obtain a sump product consisting of the final product. The novel compounds can be used as brake fluids.
Patent GB-1457131-A (GB)
Title: Machine tools
IPC: B23Q35/123
Filed: 1973-01-10
Abstract: 1457131 Copy lathes-milling; frames; gauging CENTRAX Ltd 16 Jan 1974 [10 Jan 1973] 1424/73 Headings B3T B3B and B3K A copying machine tool, such as a milling lathe in which a rotating workpieee is operated upon by a rotary cutter which is under the control of template sensed by a tracer, comprises a bed 10 and headstock 12, two parallel work holding spindles 14, 16 located vertically one above the other and a further spindle 18 carrying a rotatable template 20 parallel with the spindles 14 and 16, a saddle 28 and cross slide 30 mounted on the bed and the cross slide carrying two parallel rotary cutters 30 mounted in a cutter head 32. A tracing head 40 with a stylus 42 is attached to the cross slide and by contact with the template 20 via an appropriate system controls the movement of the cross slide 30 and saddle 28 in accordance with the shape of the template. Another spindle 496 is mounted below and parallel to template spindles 18 and coupled thereto for synchronous rotation, the spindle 496 carrying a speed cam 498 of a shape that its radius at any point defines the speed of rotation of the template and workpieces for machining a corresponding area of the workpiece surface. The carriage 28 carries a sensor 500 operated by a follower 582 in contact with the cam 498, the speed of rotation of the spindles 14, 16 and 18 being controlled by a speed controller in dependence of the signals from the sensor 500, the controller being housed in a cabinet 50. An electrically controlled servo system is provided to control the hydraulic motor 48 and the hydraulic motor for the feed screw 44 in order to control the operation as regards speed and direction of traverse of the saddle and cross slide prior to engagement between the template and stylus. A circuit diagram for such operation is described with reference to Fig. 4 (not shown).
Patent GB-563809-A (GB)
Title: An improved method of and means for manufacturing chains
IPC: B22D25/02
Filed: 1943-01-28
Abstract: 563,809. Casting chain. BROCKHOUSE CASTINGS, Ltd., and CLEWS, J. Jan. 28, 1943, No. 1429. [Class 83 (i)] Moulds.-Chains are made by casting two or more interlinked links, in a two-part greensand mould having a core, each link cavity having its own pouring gate. A mould for casting 3 links at once comprises a drag 10 with a horizontal incomplete print 14 of one link and a cavity 11 with the vertical prints 13 of two half links. A half core 12 is arranged to fit the cavity 11 and carries prints 18 which with 13 complete the cavities for two half links and a print 16 which completes the print 14. The cope is the same as the drag, but is provided with extensions of the three runners 29 to the top face for pouring. A mould for joining chains casting a single link is shown in Fig. 7, the prints 22 for the end links extending to the ends of the mould to receive precast links 23 and the core 25 and core cavity 24 bearing the prints 26, 27 for the link to be'cast. Fig. 6 shows a mould for connecting two preformed links A by casting five links B as previously described.
Patent GB-544832-A (GB)
Title: Improvements in and relating to dynamo electric machines
IPC: H02K19/24
Filed: 1941-02-04
Abstract: 544,832. Inductor alternators. WOODS, Ltd., M. W., and DALY, B. B. Feb. 4, 1941, No. 1447. [Class 35] An inductor-alternator has 2p n evenly distributed wound poles and (2pŒ 1) n evenly distributed inductor poles, where p, n are positive integers and n is even if p=1. In the three-phase machine shown p=3 and n=2 so that twelve stator windings a ... l are opposed to ten rotor poles in n (=2) electrically identical sections. To enable exciting D.C. and generated A.C. to flow through the same windings, two sets of windings per section, a, c, e and b, d, f for one section and g, i, k and h, j, I for the other, which intersect fluxes in phase-opposition, are connected in parallel star so that corresponding windings, a, d for example, deliver A.C. in the same phase to the output circuit, while excitation D.C. is fed in at the star points and passes through corresponding windings in series. In Fig. 2 each section is in parallel with the D.C. source, while in Fig. 4 the sections are in series, isolating condensers Cr being necessary to stop D.C. circulating in the A.C. connections. It is not necessary for p to equal the number of phases as in a two phase machine, Fig. 5 (not shown), p=4 giving a four-wire system and avoiding the connection of an A.C. supply line to the star point which is necessary if p=2 ; if a three-wire system is required an isolating transformer may be interposed. In a single-phase system, Fig. 6 (not shown) either p=1, n=2, when the voltages in each set of windings are in phase, or p=2, when the voltages are 90 degrees out of phase, giving a resultant at 45 degrees to either. The successive poles are preferably wound so as to give opposite polarities, and n is chosen greater than 1 so as to avoid unbalanced magnetic attraction between rotor and stator. The n sections need not occupy geometrically similar portions of the stator, as electrically equivalent windings may be selected from any positions to form a section. The pole-width is preferably 35-40 per cent. of the pole pitch to avoid excessive induction.
Patent GB-851503-A (GB)
Title: Improvements in or relating to transducers
Inventor: ROBERTON JAMES SAMUEL PATERSON
IPC: H04R1/22
Filed: 1958-01-16
Abstract: 851,503. Microphones. STANDARD TELEPHONES & CABLES Ltd. Jan. 9, 1959 [Jan. 16, 1958], No. 1526/58. Class 40 (4). In a microphone in which an enclosed space behind the diaphragm is connected to the outside of the microphone casing by a resonance control tube, the tube also serves as a conduit for the electrical conductors connected to the diaphragm drive unit. As shown in Fig. 3, the drive unit 20 is carried by an apertured frame 21 to the periphery of which front and rear casing portions 10, 11 are sealed. The frame also supports a magnetic diaphragm and slug assembly 22 which may be connected to an outer diaphragm 23 of light alloy or plastic. The resonance tube 19 may be moulded with the rear casing portion 11 in a suitable insulating material such as toughened opaque polystyrene, and is arranged with the electrical conductors 17, 18 leading to the drive unit so that it opens out at an aperture (not shown) at the front of the microphone. More than one resonator tube 19 may be provided, in which case each conductor may pass through a different tube. A receiver of the deaf-aid type is also described, Fig. 7 (not shown), in which the electrical conductors pass through an anti-resonant aperture in the rear of the casing.
Patent GB-633602-A (GB)
Title: Process of dyeing cotton
IPC: D06P3/66
Filed: 1948-01-19
Abstract: Cotton is dyed in a dyebath containing a dyestuff having at least one isothiouronium group in its structure and an aliphatic carboxylic acid, and there is added gradually an alkali metal salt of a weak acid.  The dyestuff is finally fixed by treating the cotton in sodium carbonate solution.  Suitable dyestuffs are those obtained by reacting chloromethyl derivatives of phthalocyanins or of anthraquinone dyestuffs with thiourea or a substituted thiourea.  In an example, cotton yarn is added to a bath containing acetic acid and the dyestuff obtained by reacting copper tri-(chloromethyl) - phthalocyanine with tetramethylthiourea, after which sodium acetate is added in two portions, and the cotton is finally boiled in dilute sodium carbonate solution.  Alternative dyestuffs are those obtained by reacting bis-(chloromethyl)-dibenzanthrone with the tetramethylthiourea and by reacting bis - (chloromethyl) - isodibenzanthrone.  In a second example, cotton yarn wetted out with an aqueous solution of sulphonated oil is immersed in a dyebath containing acetic acid, cetyltrimethylammonium bromide and the dyestuff obtained by reacting copper tri(chloromethyl) - phthalocyanine with tetramethylthiourea.  Sodium acetate is added in portions and the cotton finally removed and boiled in dilute sodium carbonate solution.  Specification 587,636 is referred to.
Patent GB-1342103-A (GB)
Title: Apparatus for the surface treatment of articles of oval or  arcuate cross-section more particularly for screen printing  machines
IPC: B41F15/08
Filed: 1971-01-13
Abstract: 1342103 Printing apparatus W KAMMANN [trading as WERNER KAMMANN] 13 Jan 1971 [10 Dec 1970] 1577/71 Heading B6C Bottles 10 have two arcuate surfaces on opposed sides, and these receive imprints by being successively presented to a single printing means 11, which may be a stencil or an offset member, and rolled against it as the bottles are turned through 360 degrees.
Patent GB-431865-A (GB)
Title: Improvements in washer boxes for coal
IPC: B03B5/24
Filed: 1934-01-17
Abstract: 431,865. Washing coal. SIMONCARVES, Ltd., Bird Hall Lane, Cheadle Heath, Stockport, and ROBSON, J., 35, Dufferyn Terrace, New Tredegar, Monmouthshire. Jan. 17, 1934, No. 1647. [Class 82 (ii)] A discharge valve of a washer box is controlled by the upward and downward movement of a float which is completely submerged in the material being stratified, means independent of the discharge valve operating mechanism being provided to prevent the float from emerging from the bed of materials. In the form shown a float 5, completely submerged in the layers 3 and 4 of heavy and light material respectively resting on the screen 2, is carried by a rod 6 which is connected, for example by means of a flexible cord passing over pulleys, to operating mechanism for a discharge valve, rollers 17 being provided to prevent lateral movement of the rod. An arm 11 is attached, preferably adjustably, to the rod 6 by means of a collar 10, the arm carrying a roller 14 which runs between vertical guides 12 which are joined at their upper ends by a stop member 13. Alternatively an adjustable stop member 16 may be provided between the guides. The contact of the arm 11 with the member 16 or the member 13 prevents the float from rising out of the bed of materials on the screen. The arm 11 may carry a pointer 15 which works over a scale on one of the guides 12 to indicate the height of the float.
Patent GB-711642-A (GB)
Title: Process for the production of rayon products
Inventor: DRISCH NICOLAS
IPC: D01F2/08
Filed: 1952-01-21
Abstract: Viscose rayon, suitable for the production of staple fibre, is obtained by spinning into a dilute sulphuric acid coagulating bath, containing at least 50 grams per litre of sodium sulphate, a viscose prepared from cellulose pulp having a degree of polymerization of at least 700, without ripening of the alkali cellulose and without ageing of the viscose, the viscose having a viscosity of at least 300 poises and a gamma value higher than 60, and thereafter fixing the filamentary product by treatment with a hot aqueous liquid.  The filaments obtained have a high resistance to breaking by repeated bending.  The viscose may have a cellulose content of 5.5 to 7.5 per cent. and a caustic soda content of 3 to 5 per cent.  The coagulating bath may contain up to 30 grams per litre of sulphuric acid and 80 or more grams per litre of sodium sulphate.  The viscose may be spun vertically upwards from a horizontal spinneret and the filaments may be subjected to stretching continuously with their production.  The xanthate filaments may be treated with boiling water to regenerate the cellulose.  The filaments may be cut to form staple fibre before the regeneration treatment, or a bundle of the regenerated cellulose filaments may be stretched in a continuous manner so that the filaments are broken to form a sliver of short fibres.  In an example, cotton linters, the cellulose of which has a degree of polymerization of 700-800, are mixed with caustic soda and then pressed.  The alkali cellulose is not ripened but is shredded and xanthated with 55 per cent. of carbon disulphide, calculated on the alpha-cellulose content of the pulp, at 25-30 DEG C. The treatment is carried out in a vacuum or inert atmosphere.  The xanthate is worked into a paste with caustic soda solution at -5 to +5 DEG C. and the product is dissolved in dilute caustic soda or water to produce a viscose containing 6 per cent. of cellulose and 3 to 5 per cent. of caustic soda.  The viscose is not aged before it is used in the spinning operation.  The viscose is spun into dilute sulphuric acid containing more than 50 grams per litre of sodium sulphate, and the xanthate filaments obtained are stretched and then converted to cellulose by treatment with boiling water. Specification 685,631 is referred to.
Patent GB-211316-A (GB)
Title: Improvements relating to the indicating mechanism of weighing machines of the pendulum weight type
IPC: G01G1/00
Filed: 1923-01-20
Abstract: 211,316. Berkel, C. F. M. van, and Maatschappij tot Vervaardiging van Snijmachines Volgens van Berkel's Patent en van Andere Werktuigen. Jan. 20, 1923. Pendulum-weight apparatus. - A self - indicating weighing machine employing a single pendulum weight is provided with two separately mounted indicators moving in opposite directions to give readings from left to right on both sides of the machine. In the form shown in Fig. 1 the usual flexible band 23 attached to the check arm 15 operates the pendulum 20, together with a pointer 19 at one side of the machine, in a clockwise direction. The second pointer 30 at the other side of the machine is attached to a pivoted link 27 and is moved in a counterclockwise direction by means of a link 25 and a bracket 24 on the check arm. In a modification wherein a second check arm 15 is employed the pointer 30 is mounted on a. loose hub and is actuated by a flexible band connected to the check arms. In a further modification, the two pointers are supported upon a common knife-edge, and the pointer 30 is actuated from the pointer 19 by open and crossed flexible bands connecting the hubs of the pointers through a pivoted drum. The pivoted drum may carry the pendulum and may be connected to the weigh beam so as to transmit the movement to the pointers. In further modifications the pointers are actuated by racks carried either by one or both of the check arms. In a further modification, Fig. 8, the weigh beam rocks a lever 41 mounted on a fulcrum 42, and the lever actuates the pointers 19, 30 by a shackle 39 and by bands 37a, 37b. The pendulum 20 may be carried by the lever 41, and the pointer 19 may be actuated by flexible bands instead of by a shackle. Instead of using bands, the pointers may be actuated from the lever 41 by racks or by a system of links. In a further modification the two pointers are actuated respectively by a link and a shackle connection from one end of the lever 41.
Patent GB-329671-A (GB)
Title: Improvements in the working up of tars containing paraffin waxes
IPC: C10G73/06
Filed: 1929-01-18
Abstract: 329,671. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Jan. 18, 1929. Mineral and tar oils and waxes.-Paraffin-containing tars are worked up by removing the wax without distillation, then subjecting to a condensing process e.g. with metal chlorides to form lubricating oils, and finally converting the products other than lubricating oils into low-boiling hydrocarbons, e.g. by cracking or destructive hydrogenation. For example, 100 lb. of brown coal tar obtained by low-temperature distillation as described in Specification 259,389, [Class 55 (i), Coking &c.], is mixed with 300 lb. of acetone, and cooled to - 10 or - 20‹ C. After separation of the 30 lb. of wax precipitated the oil is treated at 150 -200‹ C. with aluminium chloride, e.g. as described in Specifications 299,086 and 318,311. On distilling 30 lb. of highly viscous lubricating oil re. mains, and 40 lb. of water-white hydrocarbon B.P. 220-260‹ C., similar to gas oil passes over. The latter is treated with hydrogen at 450‹ C. and 200 atmospheres in presence of molybdenum trioxide and chromic acid; benzines B.P. 40-180‹ C. result. In the separation of the wax the acetone may be replaced by benzine, trichlorethylene, or mixtures of benzene and alcohol. The separated wax is treated with chromic and sulphuric acids to obtain a hard wax consisting of paraffin wax with about 60 per cent of montan wax and montanic acid; it may be used in polishing compositions or be oxidized to high molecular fatty acids.