baber/WOPTO huggingface dataset:
Patent GB-685837-A (GB)
Title: Improvements in devices for measuring or checking the transverse dimensions of a piece of indefinite length
IPC: G01B5/10
Filed: 1949-06-01
Abstract: 685,837. Testing threads, &c. SOC. D'APPLICATIONS ET DE CONSTRUCTIONS POUR MATERIEL AUTOMOBILE S.A.C.M.A. June 1, 1949 [June 26, 1948]. No. 14722/49. Class 120 (iii). Also in Group XIX. A device for continuously checking the transverse dimensions of a textile roving or thread or the like, in which the latter co-operates with a measuring element to control a pressure measured by a liquid manometer, is characterized in that at least one passage of reduced transverse section is provided in the path either of the liquid in the manometer or of the gas acting on the liquid so that variations in the manometer reading are damped. The thread 8, Fig. 1, to be gauged is drawn through holes in a box 6, the interior of which is connected by a conduit and through an orifice 5 to a conduit 3 supplied with air at a pressure maintained constant by a tube 2 which dips into a liquid reservoir 1 open to the atmosphere. The pressure on the box side of the orifice 5, which varies in accordance with the diameter of the thread, is indicated by the height of liquid in a tube 10 connected with the reservoir 1. A narrow passage 12 at the base of the tube 10 damps the movement of the indicating liquid, which remains at a level corresponding with the mean diameter of the thread. In a modification, Fig. 2, for indicating the mean deviation from the mean diameter of those parts of the thread which are smaller in diameter than the mean value, the passage 12 is supplemented by a passage 13 associated with a ball 14, of substantially the same density of the liquid, so that the liquid may flow upwardly more freely than downwardly. The ball 14 is retained by a pin 16. By inverting the arrangement, the mean deviation from the mean of those parts of greater diameter than the mean may be indicated. By making the passage 12 extremely small, the variations in the local maxima or minima may be indicated and by using only the controlled passage 13, the maximum or minimum of all values may be shown. The damping passages may alternatively be arranged in the air above the liquid in the tube 10. Specifications, 348,860 and 402,008, '[both in Group XIX], are referred to. The Specification as open to inspection under Sect. 91, comprises also a further modification for use with a mechanical gauge or a Bourdon gauge connected to pneumatic measuring means, the passages 12, 13, being formed in a piston connected to the indicating pointer and moving in a cylinder containing the damping fluid. The pointer is flexibly connected to its operating means. This subject-matter does not appear in the Specification as accepted.
Patent GB-1177103-A (GB)
Title: Stabilized Polyamides
Inventor: HERMANN KARL HEINZ
IPC: C08K3/16
Filed: 1967-03-31
Abstract: 1,177,103. Stabilized polyamide compositions. FARBENFABRIKEN BAYER A.G. 31 March, 1967 [2 April, 1966], No. 14742/67. Heading C3R. A polyamide composition, stabilized against degradative effects of heat and oxygen, contains an amount of 0À001 to 0À2% by wt. of Cu in the form of a Cu compound and 0À001 to 1% by wt. of an iodide of Zn, Cd, As, Sb or Bi, the proportions being based on the total weight of the polyamide composition. The composition may also contain 0À01 to 0À2% by wt. of a phosphorus compound, e.g. H 3 PO 4  and H 3 PO 3  and their salts, esters and amides, and phosphines such as triphenylphosphine. Pigments, dyes, light sensitizers, optical brightners, fillers such as glass or asbestos fibres, lubricants, plasticizers and crystallization promoters, may also be added. The preferred Cu compounds are cuprous iodide, cupric acetate and potassium cupro-cyanide, other compounds mentioned are copper halides, cyanide, sulphate, stearate and benzoate, salts of phenols and complexes of Cu salts with ammonia, amides, lactams, phosphates, phosphines and cyanides. The polyamide used in the example is a polycaprolactam.
Patent GB-1268131-A (GB)
Title: Improvements in or relating to methods of and apparatus for producing blanks for the manufacture of frustoconical containers
IPC: B31B50/16
Filed: 1970-03-26
Abstract: 1,268,131. Cutting blanks. CHAMBON Ltd. 26 March, 1970 [28 March, 1969], No. 14775/70. Heading B4B. [Also in Division B3] A method of producing blanks 16 intended for use in the manufacture of frusto-conical containers, each blank having the shape of an annular sector corresponding to the development of a frusto-conical surface, comprises feeding strip stock 1 continuously, forming in the strip in one operation a first transverse arcuate cut line 7 corresponding to the minor base of the frusto-conical surface, and two radial cut lines 8, 9 corresponding to the edges of the blank, while leaving two uncut portions 11, 12 between the cut lines, and then forming a second transverse arcuate cut line 15 which corresponds to the major base of the frusto-conical surface and is so positioned as to cut through the portions 11, 12 of a preceding blank to sever it from the strip. In apparatus described for performing the method, strip stock 1, e.g. of thick paper, cardboard, metal sheet, or plastics, is fed continuously to rotary trimming cutters which remove margins 3, 4. The trimmed stock is then fed between a first pair of rotary cutting rollers, one of which has blades which produce the cut lines 7, 8, 9, and subsequently between a second pair of rotary cutting rollers, one of which has a blade which produces the cut line 15, and the other of which has studs 24, which remove the scrap portions 21, 22, 23. The scrap portions are stripped from the studs by a comb-shaped plate. The cut blanks 16 are fed by rollers 17 to a clamp-type device 18 which stacks them substantially vertically on an inclined plane 19.
Patent GB-500776-A (GB)
Title: Cathode-ray tubes, especially for television
IPC: H01J1/20
Filed: 1937-08-17
Abstract: 500,776. Cathode - -ray tubes. MICHAELIS, E. Aug. 17, 1937, No. 14827/38. Convention date, Aug. 28, 1936. Divided out of 491,050. [Class 39 (i)] In a cathode-ray tube, the cathode comprises a mushroomshaped insulator B, carrying a metal plate E, which is coated with emissive oxide, and is beaded over the head A of the insulator, and the heater C passes through a bore in the insulator to a point near to the plate E. The insulator head A may be rectangular in cross-section, and the lower part of the insulator may be made of large diameter to support a Wehnelt cylinder. Electrons from the beaded portions F may be reflected into the main electron stream, or may release secondary electrons which join the main stream.
Patent GB-718214-A (GB)
Title: Governor controlled electric motor
IPC: H01H35/10
Filed: 1952-06-12
Abstract: 718,214. Centrifugal switches; switches held set and freed mechanically. BRITISH THOMSONHOUSTON CO., Ltd. June 12, 1952 [June 14, 1951], No. 14843/52. Class 38(5) The combined " on-off " and centrifugal switch of Specification 675,390 is modified by mechanically connecting the contacts of the two switches to ensure that the centrifugal switch opens before the " on-off " switch so that the latter only interrupts the residual current through an impedance which is short-circuited when the centrifugal switch is closed. The centrifugal switch comprises a fixed contact 13 and a movable contact 12 fixed to a resilient member 26 and biased to close. The " on-off switch comprises contacts 14, 15  on resilient members 22, 23 respectively anchored to opposite legs of an insulating support 21, both members 22, 23 being biased to the left. Member 23 carries an insulating stop 32 co-operating with a conducting stop 31 on member 26 so as to limit movement of contact 12 to the right. The member 23 and a member 29 on which contact 13 is mounted are electrically connected by a rivet 25 so that the switches are in series. The circuit is closed by movement of pin 33 to the right, thereby closing contacts 14, 15. Further movement of spring 23 to the right permits similar movement of contact 12 until it engages contact 13. Return movement of pin 33 allows member 23, which is stronger than 26, to move to the left to separate contacts 12, 13, further movement of member 22 allowing contacts 14, 15 to open. A signal lamp may be connected in series with contacts 14. 15 across the supply. The stop 31 also acts as a cooling fin. Contacts 12, 13 may be controlled independently of the contacts 14, 15 by the speedresponsive mechanism.
Patent GB-1144015-A (GB)
Title: Circuit arrangements using variable capacity diodes
IPC: H03H5/02
Filed: 1967-03-31
Abstract: 1,144,015. Frequency modulation; tuning radio receivers. STANDARD TELEPHONES & CABLES Ltd. 31 March, 1967[4April, 1966], No. 14849/67. Headings H3Q and H3R. The range of variation of capacitance in a capacitance diode circuit is increased by employing two diodes D 1  and D 2  with different biases applied to each. In Fig. 3, the bias voltages U and U - #U are derived from a supply voltage Ub via a potentiometer P and two adjustable resistances R T1  and R T2 . With this arrangement adjustment of the potentiometer P decreases U and increases #U or vice-versa, and the adjustable resistances R T1  and R T2  assist selection of a favourable ratio of #U to U. In a modification (Fig. 2, not shown) not described in detail, #U is constant and independent of U.
Patent GB-250787-A (GB)
Title: Improvements in way guards for metal-cutting and like machine tools
IPC: B23Q11/08
Filed: 1925-06-08
Abstract: 250,787. Marks, E. C. R., (Warner & Swasey Co.). June 8, 1925. Turning.-A metal-cutting or other machine tool having a common way supporting a number of slidable members is provided with a protecting device, the parts of which are carried by the slidable members in such a manner as to enclose the way in all positions of the slidable members. In the application to a turret lathe, the lathe bed 10 carries a turret slide 13 supported on slideways 17, 18 at the top of the bed, and a cross-slide carriage 15 supported on slideways 18 being common to both slides. The slideway 17 is protected by guards 20, 20a of inverted U or V section secured to the turret slide, the headstock having a clearance opening 22 to receive the guard 20 when the turret slide is completely up to the headstock. The common slideway 18 is completely protected by upper guard members 23, 23a of inverted U or V section which are secured respectively to the front and rear sides of the turret slide and and which coact with lower guard members 24, 25 and 24a, 25a secured respectively to the front and rear sides of the cross slide carriage. The upper guard member 23 passes through an opening 27 in the cross slide carriage and is supported by the extension 15<x> of this carriage, further support being afforded by the upper surfaces of the lower guard members. The upright portions of the lower guard members are preferably parallel to each other, Fig. 5, and pass through slots in the turret slide, but, in a modification, the lower guard members may be arranged as shown in Fig. 7. Further modifications of the shapes of the upper and lower guard members are described and in some cases the sliding connection between the guard members may be of the tongue-and-groove type. The headstock may be provided with openings to receive the forwardly extending guard members or, alternatively, the headstock may be so shaped that the guard members can pass alongside of it. In a further modification, Fig. 12, the cross slide carriage is mounted on the same ways as the turret slide and in this case the above described guard device is used for both the ways 17<a>, 18<a>.
Patent GB-649166-A (GB)
Title: Improvements in preparation of mixtures of synthetic resins
IPC: C08F279/04
Filed: 1948-06-04
Abstract: A synthetic resin-rubber mixture is prepared by subjecting to polymerizing conditions a latex of one of a styrene-acrylonitrile copolymer synthetic resin and a butadiene-styrene copolymer synthetic rubber which latex contains a mixture of monomers to form the other copolymer, coagulating and separating the thus formed mixture of synthetic resin and synthetic rubber from the aqueous medium.  When polymerizing a mixture of styrene and acrylonitrile in a butadiene-styrene synthetic rubber latex, the synthetic rubber particles preferably contain 30 to 90 per cent by weight butadiene, the styrene content of the styreneacrylonitrile mixture is preferably 50 to 95 per cent by weight and the mixture of styrene and acrylonitrile is preferably 25 to 95 per cent by weight of the combined weight of the styrene, acrylonitrile and synthetic rubber. When polymerizing a mixture of butadiene and styrene in a styrene-acrylonitrile synthetic resin latex the synthetic resin particles preferably contain 50 to 95 per cent by weight of styrene, the butadiene content of the butadiene-styrene mixture is preferably 30 to 90 per cent by weight and the mixture of butadiene and styrene is preferably 5 to 75 per cent by weight of the combined weight of the butadiene, styrene and synthetic resin.  In examples, polymerization is effected in the presence of potassium persulphate as catalyst, dodecyl mercaptan as regulator, the emulsifying agent being a sodium stearate soap or a mixture of sodium isopropyl naphthalene sulphonate and the condensation product of formaldehyde with naphthalene sulphonic acid; coagulation is effected by the addition of acetic acid.  The Specification also refers to the polymerization of the styreneacrylonitrile mixture in natural rubber latex but states that the mixture obtained is incompatible. Specification 632,722 is referred to.
Patent GB-560683-A (GB)
Title: Improvements relating to electrical measuring or indicating instruments
IPC: G01R27/12
Filed: 1942-10-28
Abstract: 560,683. Current meters. FERRANTI, Ltd., and EASTON, H. Oct. 28, 1942, No. 15117. [Class 37] A ratiometer in which two co-planar backto-back coils move together in different parts of the field of a permanent magnet and. are threaded over an annular core in this field has the face of each pole of the permanent magnet so shaped that its length parallel to the axis of the moving element varies across the face, whereby for a given ratio of angular rates of change a flux respectively linked by the coils there is a unique position of the moving element. A C-shaped magnet 1, Fig. 2, has cylindrical pole faces 3, 4 which are higher at one end than the other and between which is an annular core 6 the inner and outer surfaces of which are cylindrical and coaxial. The core 6, which has a slot in it, is mounted in the medial plane between the pole faces 3, 4 parallel to but not coaxial with the pole faces so that airgaps increasing from the top to the bottom are formed. The moving element comprises two similar co-planar back-to-back loop coils 9, 10, of which one only is shown in Fig. 5, carried by a former 11. This former is made from a rectangular lamina of aluminium in which are cut two equal rectangular windows 12, 13, the edges of which are bent over to form a rim 14, Fig. 6, carrying the pivots 15. The coils are mounted within the rim 14 and so as to frame each window, lugs 16 retaining the coils in position. The centre limb 18 of the moving element is passed through the slot in the core 6 so that the outer limbs move in the gaps between the core 6 and the pole faces 3, 4. Angular deflection of the moving element causes one coil to move into a gap of decreased gap height and the other into a gap of increased gap height, until a position of equilibrium is attained corresponding to the ratio of the currents in the coils. In a modification, Fig. 7, the pole faces 22 of the magnet, in addition to being higher at one end than at the other, are flat and in non-parallel planes. The core 6 may alternatively be formed with its inner and outer surfaces non-coaxial. The windows of the coil former may be unequal to accommodate coils of different dimensions and may be other than rectangular to correspond with the contour of the core. The axis of rotation of the moving element need not coincide with the centre limb of the former when, for instance, the rectangular windows are made unequal. The axis or the centre limb or both may be located other than equidistantly from the two pole faces. The pole faces may be other than of planar or circular cylindrical form, for example, corresponding portions of the pole face surfaces may be such as to lie on 'a cylindrical surface of gradually changing curvature so as to produce a scale which is more open in one part than in the remainder. The polepieces of the magnet may be made of soft iron.
Patent GB-516283-A (GB)
Title: Improvements in hydraulic brake systems
IPC: B60T11/22
Filed: 1938-05-20
Abstract: 516,283. Hydraulic brakes; piston packing. BALDWIN, P. S. May 20, 1938, No. 15134. Convention date, May 20, 1937. [Class 122 (i)] [Also in Group XXXIV] A piston 7 of rubber or the like, for the master cylinder of a hydraulic brake system, is expanded initially by mechanically exerted axial pressure and further expanded in operation by fluid pressure acting axially and radially. The piston 7 is secured in compressed condition on a member 5 by a nut 14 and expanded in operation by fluid pressure acting on a plate 13 and through ducts 10, 11. A spindle 16 for actuating the piston has a conical end adapted to engage a seat 26 in the member 5 to cut off communication between cylinder 12 and reservoir 1 during the compression stroke. The Specification as open to inspection under Sect. 91 comprises also the modification shown in Fig. 6 (Cancelled), in which the rubber piston 7 is mounted between members 32, 33. The member 32 has slots 21a for passage of liquid from the reservoir through the piston to the cylinder, said passage being closed during operation by a conical end 28a on the actuating rod engaging a seat 17a on the piston. This subject-matter does not appear in the Specification as accepted.
Patent GB-511316-A (GB)
Title: Light-weight glass-like material and method of making the same
IPC: C03C11/00
Filed: 1938-05-23
Abstract: 511,316. Glass manufacture. FOWLER, A. A., and OTIS, R. M. May 23, 1938, No. 15281. [Class 56] A hydrous cellular vitreous material of light weight, suitable for heat or sound insulation, is made from a composition comprising alkali metal oxide, boric oxide, and silicon dioxide, the boric oxide having in the composition a mol fraction greater than 0À03 and preferably less than 0À15. In making the material, a solution of sodium silicate is heated and to this is added boric acid, borax, or' other suitable source of boric oxide, either in solid form or in solution. A white precipitate is formed which is agitated until it dissolves to form a thick viscous liquid. This liquid poured into shallow pans or on to a moving belt is introduced into an oven, with a temperature of about 350‹F., where it dries and forms a hydrous solid which, when cool, generally contains 15-25 per cent of water. The cooled material is comminuted into particles of the desired size, and is heated to a temperature of 650‹-1,000‹F. in a drum in which an agitator is at work. The particles soften and the steam which is formed expands them to form a granular cellular material. Moulded articles such as slabs may be formed by placing the comminuted material into a closed mould and heating it to 750‹-1,000‹F The particles swell and unite to form a cellular body of the shape of the mould cavity. U.S.A. Specification 2,038,034 is referred to.
Patent GB-1450491-A (GB)
Title: Polyester films
IPC: H01B3/42
Filed: 1974-04-05
Abstract: 1450491 Biaxially stretched naphthalene 2,6- dicarboxylic acid films TEIJIN Ltd 5 April 1974 [6 April 1973] 15287/74 Heading B5B A biaxially stretched film comprises a linear polyester which contains units derived from naphthalene-2,6-dicarboxylic acid, units derived from ethylene glycol and optionally units derived from one or more dicarboxylic acids and dihydric alcohols other than the aforementioned, the total molar percent of the optional compounds being less than 10%, the polyester having an intrinsic viscosity, measured in o-chlorophenol at 35‹C of at least 0À40 and a concentration of free carboxyl groups of not more than 30 equivalent/metric tonne. The preferred polyester is polyethylene 2,6-naphthalate.
Patent GB-151689-A (GB)
Title: Improvements in or relating to valves for air compressors and the like
IPC: F04B49/24
Filed: 1919-06-19
Abstract: 151,689. Broom, H. S. June 19, 1919. Check lift valves.-In an arrangement of spring-loaded superposed suction and delivery valves for air compressors, the lower seat is held in position by a strong spring pressed down by the upper seat. Each valve comprises a ring 12 co-opererating with upstanding rings 10, 11 on seats provided with conical shoulders 15 to engage similar surfaces on the casing and is loaded by a spring 21. The delivery-valve spring is centred by a recess 20 in a guard 19 provided with fingers 18 to guide the valve, while the suctionvalve spring is centred by a boss 14 on the delivery valve seat, the guide fingers 8 for the valve being formed on the seat. The spring 25 for holding the lower seat is housed in a recess in the boss 14, and the upper seat is held by a stud 24 screwed through a bridge 23 to engage a recess in the top of a nut 22 used to secure the guard-plate to a stud 16. The suction valve may be held open by a fork 27 having a tail-piece 28 rotatably mounted in a block 29 actuated by a screw 31.
Patent GB-1191604-A (GB)
Title: Method of Manufacturing Cables and Wires Insulated with Tape Material.
Inventor: CRAMER CHRISTOPH
IPC: H01B13/10
Filed: 1968-04-01
Abstract: 1,191,604. Covering cables. KABELUND METALLWERKE GUTEHOFFNUNGSHUTTE A.G. 1 April, 1968 [1 April, 1967], No. 15471/68. Heading B8G. [Also in Division B5] Cables and wires are insulated by drawing tape 3 off a reservoir reel 2, folding at least one edge of the tape 3 through about 90 degrees, e.g. between rollers 6, 7 then doubling over the edge through a further 90 degrees, e.g. at roller 8, and applying the folded tape on to the cable core 9. As shown, the tape is guided to the folding rollers 6, 7 by roller 5 which has a running surface equal to the width of the tape. The folding rollers can be of variable width and having a running surface equal to the width of the tape less the width of the fold. The distance between the rollers is variable. The running surfaces of the folding rollers are bounded by flanges on one or both rollers, the flange(s) of one roller engaging against the edge of the running surface of the other roller, see Figs. 3-6 (not shown). The wound tape can be passed through a sizing nipple.
Patent GB-467299-A (GB)
Title: Sun glare shield
IPC: G02C9/04
Filed: 1936-12-10
Abstract: 467,299. Eye shades. HARGREAVES, H. Dec. 10, 1936, No. 15615. [Class 97 (i)] An eye shade has a continuous rear edge 4 shaped to conform to the head, and a pair of curved forwardly-extending canopies 1, 2, connected by a light-intercepting bridge-piece 3 which is shaped to cut off rays which are not intercepted by the canopies. In the form shown in Figs. 1 and 2 intended for attachment to a spectacle frame, the one-piece member comprising the canopies 1, 2 and the bridge 3 is riveted &c. to a spring strip 9 carrying rims 10 provided with clips 11 for attaching to the rims of the spectacles. Instead of the complete rims 10, partial rims having grooves for attaching them to the spectacles may be used. Fig. 6 shows a form which can be used without spectacles, the shade being carried by a frame comprising arches 14, a bridge 15, and side arms 16. The arches may be grooved to receive lenses or coloured glasses, or to fit over the rims of spectacles. The arms 16 may be telescopic and an auxiliary bridge piece, pivoted to the bridge 15, may be provided.