baber/WOPTO huggingface dataset:
Patent GB-1270954-A (GB)
Title: Process for the production of oriented polyolefin films
IPC: B29C55/16
Filed: 1969-04-14
Abstract: 1,270,954. Process for the production of oriented films. W. R. GRACE & CO. 14 April, 1969 [18 April, 1968], No. 19096/69. Heading B5B. A process for preparing an oriented film from tubular cross-linked polyolefin material which comprises (a) passing the tubular cross-linked polyolefin material through a first set of pinch rollers; (b) inflating the tubular material by internal gas pressure; (c) heating the inflated material to a temperature above its flow temperature; (d) biaxially orienting the inflated material by stretching it in a single stage by internal gas pressure while at such a temperature; and (e) without further stretching, collapsing the expanded material by passing it through a second set of pinch rollers after cooling the material below its flow temperature. The term flow temperature is the point at which the film exhibits self adhesion. The term polyolefin denotes polymers and blends in which all the structural units are derived from an ethylenically unsaturated hydrocarbon, preferably ethylene with a density of 0.94 g./c.c. A typical composition in Example 1 is 65% by weight ethylene/butene-1 (95:5) copolymer and 35% polyethylene (d 0.92 g./c.c.). Prior to orienting the polyethylene film is cross-linked to the equivalent of at least 2 x 10<SP>6</SP> rads by irradiating or chemical means. The film in the form of a tube is oriented by stretching by internal gas pressure while at 17‹ to 110‹ C. above its crystalline melting point. The resulting oriented polyethylene film which may be used as a shrinkable packaging film has an oxygen transmission rate of at least 5300 c.c./24 hr./atms. m.<SP>2</SP>/mil. and a moisture vapour transmission of at least 0À28 gm./24 hr./100 m<SP>2</SP>./mil.
Patent GB-190442-A (GB)
Title: Improvements in electric multiplex communication
IPC: H04B1/66
Filed: 1922-07-12
Abstract: 190,442. Oguti, T. Dec. 15, 1921, [Convention date]. Multiplex systems and apparatus.- In a system of multiplex line or wireless telephony, each conversation is recorded magnetically on a travelling steel wire or a rotating steel disc co-operating with a circuit including an electromagnet which is moved in the opposite direction to that of the wire or disc. If the velocity of the electromagnet is k times that of the wire or disc, a conversation recorded in t seconds is reproduced in t/(k + 1) seconds, so that by means of a suitable commutator, k + 1 conversations mav be carried on at the same time and impressed segmentally in turn on a single line or wireless unit. Similar apparatus is provided at the receiving station. In quadruplex working over a line Z, Fig. 3, connecting two stations X, Y. during transmission the records made by means of stationary electromagnets N in the speaking circuits on steel wires driven over pulleys D, D' are reproduced in moving electromagnets M, which are switched in turn into the line circuit by a commutator C driven synchronously with the pulleys D, D<1>, and in receiving, the records made by the electromagnets M are reproduced in stationary electromagnets P in the receiver circuits. Additional electromagnets Q serve to wipe out the records. Two of the electromagnets M1, M2, Figs. 2 and 2<a> may be mounted on the upper side and two M3, M4 on the lower side of a carrier 9 attached to rods 7, 8 reciprocated by means of pins engaging in heart-shaped grooves 4 in discs H, H<1>, which are rotated by a motor S along with the pulleys D1<SP>1>, D2<SP>1>, D3<SP>1>, D4<SP>1> over which the steel wires pass. The electromagnets are each connected to line for half a revolution of the discs in the order M1, M3, M2, M4. Records may alternatively be made on discs D, Fig. 6<a>, rotated about a shaft E which carries on rotating arms the electromagnets M. Means are provided whereby the fixed electromagnets N, P, Q recede slightly once in each revolution to permit the free passage of the movable electromagnets. The application of the invention to wireless telephony is also described.
Patent GB-593950-A (GB)
Title: Improvements in or relating to stands or carriers for egg holders
IPC: A47J47/16
Filed: 1945-07-26
Abstract: 593,950. Stands for egg holders; toast racks. HOLLAND, C. A. July 26, 1945, No. 19216. [Class 128] The base 18 of an egg holder 20, particularly as described in Specification 593,934 engages at one side in a slot or recess 22 in a member 1 or 2 and rests at the opposite side in a member 16 or 29 at a higher level. As shown in Fig. 1 two slotted bars 1, 2 and an inverted channel section bar 16 are connected by end members 3, 4 for supporting two rows of holders. In the modification Fig. 4, a toast rack 24 is provided intermediate the ends of the stand or alternatively at one end of the stand. The base of the toast rack may be omitted and the stirrups connected directly to the members 1, 2.
Patent GB-869910-A (GB)
Title: Improved apparatus for the wet sizing of solids containing finely divided particles
IPC: B03B5/62
Filed: 1959-06-05
Abstract: 869,910. Filters; wet screening; gravityseparation apparatus. INSINOORITOIMISTOENGINEERING BUREAU R. T. HUKKI. June 5, 1959 [June 6, 1958 ; May 27, 1959], No.19286/59. Class 46. Solid material containing finely-divided particles is introduced at 1 and agitated in the presence of baffles 6 by an impeller 3. Finer particles and some liquid pass through vibrating screens 10 into collectors 12, while coarser particles are washed in a conical extension 7 by pressure-water introduced tangentially at 8, and are discharged through a valve 9. In the method of the invention several screens, increasing in fineness in the direction of flow of the mixture, may be used.
Patent GB-221203-A (GB)
Title: Improvements relating to the utilisation of solar heat and lost heat from any source
IPC: F03G6/00
Filed: 1924-08-14
Abstract: 221,203. Gailhat, J. Aug. 28, 1923, [Convention date]. Vapour-engines.-In an apparatus for utilizing solar heat or the waste heat from furnaces &c. a liquified gas, such as carbon dioxide, is evaporated in a heater 1 at a temperature above the critical temperature of the gas, then heated to a higher temperature in a superheater 2 and allowed to expand in an engine 3, the exhaust passing to a condenser 4 which is maintained at a temperature slightly below the critical temperature of the gas and the liquified gas being returned to the heater 1 with adiabatic compression by an injector 5 preferably worked by the engine 3. If the temperature in the heater 1 is sufficiently high, the superheater 2 may be dispensed with.
Patent GB-1011637-A (GB)
Title: Treatment of textile materials and films
Inventor: OWEN JOHN BRYN
IPC: D06M15/53
Filed: 1963-05-15
Abstract: Textile materials composed at least in part of synthetic hydrophobic polymeric material, e.g. nylon, polyesters, acrylonitrile polymers and copolymers and cellulose esters such as cellulose triacetate are rendered antistatic and their water absorbency and handle are improved by applying thereto from an aqueous medium 0.01-2% by weight of a polyacrylic acid or poly methacrylic acid or salt thereof and 2-20 times the weight of the acid or salt of a water soluble high molecular weight compound selected from polyvinyl alcohol which may be partially esterified proteinaceous materials, e.g. gelatin, alginic acid and its water-soluble salts starch, starch dextrins, starch ethers, e.g. hydroxy ethyl starch, cellulose ethers, e.g. hydroxyethyl cellolose, tannic acid, deacetylated chitin, condensates of alkylene oxides with polyamines, partially hydrolysed, polyacrylonitrile and polyalkyleneoxy derivatives of polymers containing a plurality of acide amide groups, and then heating at a temperature above 60 DEG C for at least fifteen seconds.  The polyacrylic acid, polymethacrylic acid or salts thereof and the high molecular weight compounds may be applied to the textile materials from the same, or different, aqueous solutions.  The alkali metal and ammonium salts of polyacrylic acid or polymethacrylic acid may be used.  The treating compositions may also contain an acid catalyst, e.g. ammonium chloride, nitrate, thiocyanate or dihydrogen phosphate, magnesium chloride, zinc nitrate and amine salts, which may be present in an amount of from 5% to 50% based on the weight of the polyacrylic acid, polymethacrylic acid or salt thereof.  The process may be carried out before, in conjunction with or after other chemical or mechanical finishing operations used to confer shrink resistance or crease resistance, modified hand or surface lustre, water repellency or optical brightness to textile materials.
Patent GB-254538-A (GB)
Title: Improvements in gloves
IPC: A41D19/00
Filed: 1925-07-30
Abstract: 254,538. Saltmarshe, T. E., (Saltmarshe, H.). July 30, 1925. Gloves.-In white evening dress or other gloves, the outsides a of the fingers, the back b of the glove and the wrist c are made from a single piece of leather as is also the back d cf the 'thumb. The insides e of the fingers, the palm f and the inside g of the wrist are cut from a single piece of thin fabric. The inside h of the thumb and the fourchettes i are made of single pieces of fabric, and the thumb and gusset j may be either fabric or leather.
Patent GB-1014819-A (GB)
Title: A machine for flattening out the seam of "the boxing" of shoe uppers
IPC: A43D55/00
Filed: 1963-05-16
Abstract: 1,014,819. Boots &c. MOENUS FRANCE S.A. May 16, 1963 [May 17, 1962; Sept. 4, 1962; April 19, 1963], No. 19409/63. Heading A3B. A machine for flattening out and applying a tape 27 to the seam of a shoe upper includes a driven roller 2 having a convex profile, a roller 3 having a concave profile and which is actuated in a beating movement to flatten the seam, and a knife 41 to cut the tape 27. The knife 41 is mounted on collars 42, 43 which act as bearing blocks for a roller 45 around which the tape 27 passes, and a crank 47 is connected to the collar 42. The knife and roller assembly is carried by a plate 48 which can oscillate about the axle 4 for the roller 2 and is held In the position shown in Fig. 2 by a spring 54. The plate 48 can be moved by an electromagnet acting on a rod 49 which turns the plate in the direction of the arrow 53. The crank 47 is connected to a rod whose other end is pivoted to a fixed point on the machine frame so that as the plate 48 moves the collars 42, 43 rotate under the action of the crank to cause the knife 41 to sever the tape 27. The tape 27 is guided by a leaf spring 56 and the upper is guided by a spring 57. Before being flattened the seam is passed through a milling device consisting of a miller 34 having conical cheeks 34a (Fig. 5), the seam being pressed against the miller 34 by a spring loaded anvil 35.
Patent GB-1509673-A (GB)
Title: Direct current electro-magnet
IPC: H01F7/16
Filed: 1976-05-12
Abstract: 1509673 Electromagnets CENTRUM BADAWCZO - KONSTRUKCYJNE OBRABIAREK 12 May 1976 [15 May 1975] 19462/76 Heading H1P An electromagnet comprises a ferromagnetic housing 1 containing ferromagnetic end members 2, 3 having conical surfaces 4<1> and 5<1> which coaxially enclose a coil 6. An armature 7 of ferromagnetic material is slidable in aperture 8 of a cylindrical extension of member 2 and has conical surface 4, 5, formed thereon, with a coaxial projecting pin 9 carried by the armature and surrounded by a spacer washer 10. The housing is closed by element 11 supporting a resilient buffer 12 and abutting member 2. On energization the flux # of the coil attracts the armature 7 into a position at which conical surfaces 4, 5 are proximate to corresponding surfaces 4<1>, 5<1> and the spacer washer 10 determines a minimum airgap therebetween. On de-energization the armature is returned to a position of rest on buffer 12 by gravity or pressure on pin 9. The conical angles may determine the force/ excitation characteristics.
Patent GB-890383-A (GB)
Title: Synthetic unsaturated polyester resins
Inventor: LINCOLN JAMES
IPC: C08G59/42
Filed: 1959-06-08
Abstract: An unsaturated polyester is made by reacting a vinyl epoxy cyclohexane with a substantially molar equivalent of maleic acid and/or maleic anhydride.  Part of the vinyl epoxy cyclohexane may be replaced by a stoichiometric amount of a saturated glycol or epoxide, e.g. ethylene glycol, polyethylene glycols, propylene glycol, polypropylene glycols or 1:2-propylene oxide.  Similarly, part of the maleic acid and/or maleic anhydride may be replaced by a stoichiometric amount of a saturated dicarboxylic acid or anhydride, e.g. sebacic, adipic or phthalic acid or anhydride. The polyesters may be cured with free-radical catalysts, if desired in admixture with unsaturated monomers, e.g. styrene, esters of acrylic or methacrylic acid, methacrylonitrile, acrylonitrile, vinyl esters or vinyl epoxy cyclohexanes. Specified catalysts are benzoyl peroxide, di-t-butyl peroxide, methyl ethyl ketone peroxide and t-butyl hydroperoxide; for cold curing these catalysts may be activated by dimethyl aniline or cobalt naphthenate.
Patent GB-664674-A (GB)
Title: Improvements in or relating to devices for delivering under relatively diminished pressure gaseous products of combustion at high pressures of self-combustible solid fuels
IPC: F02K9/38
Filed: 1949-07-25
Abstract: 664,674. Rockets; generating combustion products under pressure. WHITWORTH, E., and IMPERIAL CHEMICAL INDUSTRIES, Ltd. July 25, 1950. [July 25, 1949] No. 19508/ 49. Class 9 (i). [Also in Group XII] Combustion chamber of apparatus for generating gases under pressure, e.g. rocket motors, is provided with a pressure-reducing device having a flange adapted to burst at a predetermined pressure. The wall 1 of the combustion chamber is externally threaded to engage in the internally threaded wall 2 of an expansion chamber. Within the wall 2 is an annular seating for a flange 4 of a filter member 3, sealing gaskets 8, 9 being provided on each side of the flange. The filter member is slotted on its cylindrical and rearward end surfaces 5 over a part of its length, the flange being integral with the body of the filter, which is of steel. An externallythreaded pressure-reducing member 7 is screwed into the filter member to provide a throat through the gasses pass from the combustion chamber into the forward chamber. Should the pressure in the combustion chamber rise above the safety limit, the flange bursts, thus relieving the pressure on the wall 1 of the combustion chamber.
Patent GB-677772-A (GB)
Title: Improvements in or relating to the production of photographic images
IPC: G03C1/62
Filed: 1947-07-22
Abstract: 677,772. Photographic diazotype processes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. July 22, 1947 [July 23, 1946], No. 19625/47. Class 98 (ii). A process for producing photographic metal images comprises exposing to light within a wave-length range 3650-4000 A‹ a lightsensitive material obtained by treating a hydrophilic carrier with a solution of a lightsensitive hydroxyaryl diazonium compound and a metal compound which is reducible in aqueous medium, the concentration of the light-sensitive substance in the carrier being at least 1000/K millimol per cc., where K is the absorption coefficient of the light-sensitive substance in the wavelength range used for exposure, and physically developing the latent image using a salt of a metal having a positive electrode potential not lower than that of the metal in the said metal compound, whereby the photographic image is localized in a layer not more than 15Á thick. Typically a regenerated cellulose support is sensitized with an aqueous solution containing 1-hydroxy 2- diazonium 6-methyl benzene 4-sulphonic acid, mercurous nitrate and nitric acid, dried, and a five times reduced image of a film record 24 Î 36 mms. of a page of a book copied on to it by exposure with a water-cooled high pressure mercury vapour lamp and physically developed with a solution of metol, tartaric acid, and silver nitrate to yield an image layer less than 10Á thick comprising letters 10Á high. Due to the thin layer in which the image is confined, the support may be of paper without loss of definition due to diffusion by the support occurring. By employing such small images in colour kinematograph films used in the additive projection process, the separate colour records of a single image can all be projected in the interval occupied by the projection of a single black-and-white image using the same rate of film movement in each case. Newspapers and other periodicals may be produced in this way in extremely small sizes by rapidly and continuously copying a basic film copy of the original, the finished periodicals being read by means of an enlarging optical viewing device. Specification 439,005 is referred to. The Specification as open to inspection under Sect. 91, gives a further example of a material which may be exposed and physically developed as in the above example to give an image in a layer only 2-3Á thick, regenerated cellulose being sensitized by soaking in an aqueous solution of 1-hydroxy 2-diazonium naphthalene 4-sulphonic acid, citric acid, and silver nitrate. This subject-matter does not appear in the Specification as accepted.
Patent GB-257905-A (GB)
Title: Method of utilising bundled scrap metal
IPC: B21B1/00
Filed: 1926-08-09
Abstract: 257,905. Goldschmidt Akt.-Ges., T. Sept. 2, 1925, [Convention date]. Piling; welding. - Bundled scrap metal is heated to a welding temperature by electrical eddy currents and then welded into a homogeneous mass. For example, one or more bundles of scrap iron are surrounded by a copper coil around which a suitable alternating current is passed, thus producing eddy currents in the mass which finally raise it to a white heat. The metal is then pressed, hammered or rolled.
Patent GB-1451664-A (GB)
Title: Surface acoustic wave oscillators
IPC: H03H9/02
Filed: 1974-05-03
Abstract: 1451664 AFC systems; frequency modulators; surface wave devices NATIONAL RESEARCH DEVELOPMENT CORP 4 June 1974 [6 June 1973 3 May 1974] 27095/73 and 19653/74 Headings H3A H3R and H3U An oscillator comprises a surface acoustic wave delay line connected in the feedback path of an amplifier circuit and a phase sensitive detector PSD responsive to signals from two transducers T 3 , T 4  to apply a control signal to the circuit to maintain a certain phase difference at the detector. Frequency stability may thus be improved. The phase shift corrector 17 may be replaced by a variable resistance device, e.g. an FET, as in Fig. 2 (not shown) wherein it is included in the feedback path from one of two output transducers. In Figs. 5 and 4 (not shown), the feedback and control loops are associated with different transducers. In Fig. 5, a pair of monitoring transducers are coupled by a strip coupler to the main transmission path between the input, output transducers. The phase shift corrector 17 may include a varactor or a PIN diode in series with a fixed capacitance. The oscillator may be arranged to function as a frequency modulator by applying a modulation signal to one input of a differential amplifier 30.
Patent GB-1105302-A (GB)
Title: Improvements relating to liquid filters
Inventor: RUSSELL DAVID HAMMOND
IPC: B03C1/10
Filed: 1964-05-12
Abstract: 1,105,302. Magnetic separators. AUTOKLEAN STRAINERS Ltd. 16 June, 1965 [12 May, 1964], No. 19734/64. Heading B2J. A magnetic separator for liquids comprises a magnetic or magnetisable generally cylindrical filter element 4 primed with axially-spacer disclike pole pieces 14. means to constrain the liquid to be filtered to flow circumferentially around part of the element adjacent the peripheral surfaces of the pole pieces, and means permitting the filtered liquid to flow away from the surfaces without mixing with the liquid to be filtered. As described, the casing 1 of the apparatus is divided into an inlet and an outlet chamber 7, 8 by a two part baffle 5, 6 of non-magnetisable material. Magnets 15 between each pair of pole pieces 14 have like poles adjacent, the assembly 4 being held together by an axial rod. In operation, liquid to be filtered enters via an inlet 2 and flows between channels 9 - - 11, Fig. 2, baffles 19 ensuring that it passes closely around the pole pieces 14 which are located between adjacent channels. Channel walls 16, 17, Fig. 2, constrain the liquid to flow closely around the pole pieces 14. The filtered liquid flows in the direction of the arrow B towards the outlets in the baffle part, without mixing with incoming liquid. As the element 4 rotates magnetisable particles are shaped from the pole pieces 14 into a chute from which they pass into a screw conveyor 12. In a modification, the axial length of the pole pieces is increased and their diameter is made to equal that of the magnets. Electromagnets may be used in place of permanent magnets.
Patent GB-1342458-A (GB)
Title: Automatic bag feed apparatus
Inventor: OBARA K
IPC: B65B43/18
Filed: 1972-04-28
Abstract: 1342458 Filling bags; feeding sheets NIPPON JIDO FUKUROZUMEKI MFG CO Ltd 28 April 1972 [28 April 1971] 19815/72 Headings B8C and B8R Bags are fed to a packaging apparatus by superimposing folded bags in a reservoir, raising one bag at a time by a first pneumatic suction means transferring in suspension the raised bag by a second pneumatic suction means to a position confronting a filling spout and opening the bag by a third pneumatic suction means to allow material to be packaged from the filling spout of the packaging apparatus. As shown, flattened valve bags 12 are each rotated to an upright position by a suction gripper 16, are transferred in that position to a suction gripper 22 which moves the bag between suction means 30 operable to open the valve for engagement by a filling spout 26. In an alternative arrangement Fig. 6(a)-6(d) the suction gripper 22 drops the bag into a support 36 and suction means 54 is engaged with the bottom of the bag simultaneously with the application of push members 56, 56 to the sides of the bottom whereby to open an inlet 28. The apparatus may be arranged to run on a track (60), Fig. 7 (not shown) relative to filling spouts (26) of a packaging machine and a single bag feeding apparatus (62) may be used with a packaging apparatus having filling spouts (26) to carry out sequential packaging operations.
Patent GB-276136-A (GB)
Title: Improvements in or relating to adjustable spanners or keys
IPC: B25B13/18
Filed: 1927-05-03
Abstract: 276,136. Metcalfe, R. G. May 3, 1927. Hand grip sliding-jaw wrenches. - A wrench comprises a fixed jaw 3 on a shank 2 to which is pivoted at 6 a lever 5 pivotally connected at 10 to a U-shaped member 4 embracing the shank 2 and having relatively inclined slots 7, one engaging a pin 9 fixed to the shank and the other a pin 8 on the movable jaw 1. A member 11 pivoted to the end of the shank engages within the member 4.
Patent GB-1523871-A (GB)
Title: Building constructions
IPC: E04B1/61
Filed: 1975-08-07
Abstract: 1523871 Joining panels in portable buildings PORTAKABIN Ltd 7 Aug 1975 [7 May 1974] 19933/74 Headings E1A and E1B [Also in Division H2]  The roof 9 of a portable room unit is secured to a wall panel by means of an elongate member 12 having a vertical flange 15 secured to the inner face of a wall panel adjacent its upper margin and a horizontal flange 17 secured to the under surface of the roof 9. The member 12 being adapted to releasably support at least one cable carrier 14 and a coving 13. Each cable support may comprise a U-shaped clip or an elongate channel. An upper horizontal flange 23 of the coving 13 may be apertured for access of cables.