baber/WOPTO huggingface dataset:
Patent GB-1452484-A (GB)
Title: On-glaze decorated ceramic ware
IPC: C03C8/06
Filed: 1973-06-13
Abstract: 1452484 Glazed ceramic ware BRITISH CERAMICS RESEARCH ASSOCIATION 4 June 1974 [13 June 1973] 28223/73 Heading C1M An on-glaze decorated ceramic article has: (a) an overall coating of a lead-free glaze which consists of (excluding inpurities), in mole per cent on an oxide basis: (b) an on-glaze decoration, comprising a ceramic pigment and a vitreous flux, applied over the glaze coating, the flux for which decoration is lead-free and consists of, in mole percent on an oxide basis (apart from impurities): The article may be prepared by shaping a ceramic body and firing to form a bisque article (e.g. a 1120-1250‹ C.); applying the glaze to the bisque article (e.g. by spraying with or dipping in an aqueous glaze suspension); firing the glaze (e.g. at 1000-1120‹ C.); applying the decoration; and firing to fuse the flux of the decoration (e.g. at 675-850‹ C.).
Patent GB-1474574-A (GB)
Title: Reproducing television signals
IPC: H03K17/292
Filed: 1974-06-26
Abstract: 1474574 Timing error correction ROBERT BOSCH FERNSEHANLAGEN GmbH 26 June 1974 [29 June 1973] 28339/74 Heading H3A In an arrangement for synchronizing a television signal with a frequency translated colour carrier derived from a magnetic tape apparatus, e.g. portable video recorders with a studio generated signal, timing errors in the tape derived signals are compensated by controlled time error compensating arrangements 2, 11 prior to decoding the signal at 12. The arrangement includes a coarse control loop including a delay compensator 2 controlled by phase comparison of the studio horizontal sync pulse with horizontal sync pulses derived from the luminance component of the input signal and a fine control loop including a delay compensator 11 controlled by phase comparison of studio colour sync pulses with colour sync pulses from the input signal. In the decoder 12, the chrominance component is frequency translated at 16 to its normal position and a reconstituted colour signal is derived from circuit 20. In the arrangement of Fig. 3 (not shown), a further coarse controlled delay compensator is cascaded with delay compensator 2 for handling large time errors. In the modified arrangement of Fig. 2 (not shown) phase comparison in the fine control loop is at a lower frequency and the studio derived signal is applied via a controlled phase rotation stage.
Patent GB-338647-A (GB)
Title: Improvements in and relating to spectacles, goggles and the like
IPC: G02C7/08
Filed: 1929-09-18
Abstract: 338,647. Everington, H. D. Sept. 18, 1929. Drawings to Specification. Spectacles and goggles are provided with additional lenses, sunglare shields or eye protectors hinged to the main frame so as to lie either between the main lenses and the eyes or between the side pieces and the temples of the wearer. The subsidiary lenses may be of any shape and may be mounted on the hinges of the side pieces and provided with a lug for manipulation. The main lenses may be for distance use, the additional lenses converting them into glasses suitable for reading.
Patent GB-671449-A (GB)
Title: A process for the "indirect" oxidation-splitting of acetylenic gamma-glycols
IPC: C07C59/08
Filed: 1949-11-07
Abstract: A di-ester of an acetylenic gamma-glycol of the formula <FORM:0671449/IV (b)/1> wherein R1, R2, R3, R4 are hydrogen or alkyl radicals, is oxidized with gaseous oxygen in the presence of boric, phosphoric or silicic acid as catalyst to yield an alpha-ester carboxylic acid anhydride.  This is converted to the lactide of the alpha-hydroxy acid from which the salts and esters or free acid may be prepared.  Diacetates of the glycols may be oxidized with phosphoric or silicic acid, and di-borates with boric acid as catalysts, in amounts of 1-15 per cent, the temperature being raised to 80-200 DEG  C. before passing the oxygen in excess for 4-24 hours. The alpha-acetoxy acid anhydrides produced are converted to lactides by decomposing with water, and condensing in the presence of phosphoric acid while distilling off acetic acid with benzene, toluene or xylol.  The alpha-borate acid anhydrides are hydrolysed with water, treated with lime to precipitate the boric acid and convert the alpha-hydroxy acid to its calcium salt which is converted to free acid and condensed to form the lactide.  In examples: (1) the lactide of lactic acid is prepared by adding pyroboric acid, made by distilling water from boric acid with xylol, to 2,5-diol hexine-3 in ethyl ether at 30 DEG  C., removing the solvent, oxidizing with oxygen at 110 DEG  C., and converting the alpha-borate anhydride to lactide; (2) the lactide of alpha-hydroxy isobutyric acid is prepared by adding acetic anhydride to 2,5-dimethyl 2,5-diol hexine-3 and sodium acetate at 105 DEG  C., oxidizing with oxygen to the alpha-acetoxy anhydride, and converting this.
Patent GB-1528864-A (GB)
Title: Heat exchangers
IPC: F28D9/00
Filed: 1976-07-09
Abstract: 1528864 Plate heat exchangers SWISS ALUMINIUM Ltd 9 July 1976 [11 July 1975] 28576/76 Heading F4S In a cross-flow heat exchanger unit, the fluid flow passages are defined by spaced-apart sheets 10 of metal foil (e.g. of aluminium or copper of thickness 50 to 250 Ám.) the edges of which are formed so that when the sheets are stacked (e.g. with adjacent sheets turned relatively through 90 degrees), adjacent sheets are joined to form the fluid passage side walls by a Z- shaped edge 13 of one sheet being placed against an L-shaped edge 15 of an adjacent sheet and then folding the L-shaped edges over the Z- shaped edges. The joint surfaces may be glued, heat sealed, or soldered together. Sealing at the corners of the unit may be effected by applying a sealing agent (17, Figs. 8 and 9) of silicone rubber or polyethylene. The heat exchange surface may be increased in area by embossing with elongate indentations such as 14 or with pyramidal or spherical indentations. The foil may be lacquered or oxidized to resist corrosion. A heat exchanger may comprise a plurality of the units arranged in a block (Figs. 8 and 9) or in line (Fig. 11).
Patent GB-1008738-A (GB)
Title: Improvements in or relating to mixing apparatus
Inventor: MILLER ARTHUR WALTER
IPC: B28C5/18
Filed: 1961-08-08
Abstract: 1,008,738. Mixing appliances. A. W. MILLERS (ENGINEERS) Ltd. Aug. 8, 1962 [Aug. 8, 1961], No. 28595/61. Heading B1C. A mixer for cement, compost or dough has a stand A on which is pivoted at B<SP>1</SP> a member B carrying a detachable rotatable container D, a motor J and a detachable stirrer L in the form of a perforated flat paddle. The apparatus is balanced about the pivot B<SP>1</SP> to assume, as shown, a nearly vertical position limited by contact of the abutment B<SP>4</SP> with the stand A ; it may be locked in tilted positions by engagement of the spring catch C with notches B<SP>3</SP> in a sector plate B<SP>2</SP>. Mixing may take place with the container in a vertical or tilted position and the mixture discharged by tipping. The container may be rotated by a belt and/or chain drive G, H, the tension of which is adjustable by pivoting of the member E or the member B at B<SP>6</SP>, and by adjusting the motor position.
Patent GB-500382-A (GB)
Title: Improvements in the manufacture and production of olefine oxides
IPC: C07D301/10
Filed: 1937-10-20
Abstract: 500,382. Olefine oxides; catalytic agents. JOHNSON, G. W. (I. G. Farbenindustrie Akt.-Ges.) Oct. 20, 1937, Nos. 28598/37 and 902/38. [Class 2 (iii)] [Also in Group III] Olefine oxides are produced by the oxidation of olefines with oxygen in the presence of catalysts obtained by reducing solutions or suspensions of silver compounds with or without the presence of compounds of other metals such as gold or copper. Suitable reducing agents are hydrazine, formaldehyde, glucose, hydroxylamine and phenylhydrazine. The catalysts may be etched with dilute nitric acid. In examples : (1) a catalyst is prepared by precipitating a silver nitrate solution with potassium carbonate and reducing with potassium hydroxide and formaldehyde; 200 parts of air and 5 of ethylene are passed over this catalyst at 240-260‹ C., or 62À5 parts of ethylene, 80 of steam and 10-20 of air may be used at 210-240‹ C.; (3) silver nitrate solution is treated with hydrazine hydrate and the washed precipitate is treated for some minutes with nitric acid of 2 per cent; (4) a solution of silver nitrate containing a little copper nitrate and gold chloride is treated with hydrazinc hydrate while cooling with ice; the mixture is boiled till nitrogen is no longer evolved and the washed precipitate treated with nitric acid of 4 per cent; this catalyst is used with a mixture of ethylene, air and steam ; (7) a solution of silver nitrate containing copper nitrate and gold chloride is precipitated with potassium hydroxide and reduced with glucose, the washed precipitate being treated with nitric acid of 4 per cent; this catalyst is used with a mixture of ethylene, air and steam in the ratio 1 : 10 : 30 at 250-350‹ C. The process may be effected in a porcelain or silver tube.
Patent GB-1588031-A (GB)
Title: Isotactic polypropylene surgical sutures
IPC: D01F6/06
Filed: 1977-07-07
Abstract: The suture material comprises virtually isotactic polypropylene having a linear density of from 30 to 3000. The polypropylene has the following other properties:     tensile strength: from 4.3 to 7.5 gpd (gram per denier)   knot strength: from 3.0 to 5.0 gpd   percentage elongation at break: from 20.0 to 30.0 Young modulus: from 0.380 to 0.668 x 10<5> kg/cm<2> (from 5.4 to 9.5 x 10<5> psi) or from 50 to 80 gpd flexural fatigue strength (cycles to fracture): F = 1.251 x 10<8> x D<-1.77>, in which D = denier   static creep deformation - percentage elongation: < 8.0.   The suture material is produced by   (a) extruding a virtually isotactic polypropylene at temperatures of from 232 to 288 DEG C to give a filament, (b) quenching the resultant filament in a liquid at a temperature of from 52 to 80 DEG C with simultaneous stretching by a factor of from 1.0 to 5.0 x, (c) subsequently passing the quenched and stretched filament through a heating and stretching zone at a temperature of about 96 DEG C with stretching by a factor of from 5.0 to 8.0 x, (d) subsequently passing the heated and stretched filament through a second heating and stretching zone at a temperature of from 149 to 232 DEG C for its final stretching by a factor of from 0.95 to 1.6 x, and (e) finally obtaining the suture material formed in this way.tu
Patent GB-544913-A (GB)
Title: Ceramic bodies and a method of making the same
IPC: C04B28/00
Filed: 1939-10-25
Abstract: 544,913. Ceramic bodies ; plastic compositions. BATTELLE MEMORIAL INSTITUTE. Oct. 25, 1939, No. 28650. Convention date, Dec. 24, 1938. [Class 2 (iii)] [Also in Group V] A baked but unburned ceramic body consists of a major proportion of ceramic material containing plastic clay, and a minor proportion of a resin which protects the plastic clay from slaking in contact with water after the body has been baked. The resins may be thermoplastic or thermo-setting, synthetic or natural, and specified resins are phenol-formaldehyde 'resins, phenol-ketone resins and urea-formaldehyde resins. Amounts of resin ranging from 5-20 per cent. by weight are generally used. The synthetic resins may be formed in situ during the baking of the ceramic body. Specified clays are ball clay. kaolin, fireclay and bentonite. Specified optional ingredients of the mix are flint, feldspar, sodium silicate, carbonate and phosphate, and colouring, materials. The bodies may be baked without the application of high pressures, and their 'surfaces may be coated with waxes, paints, lacquers and the like. Reference has been directed by the Comptroller to Specification 209,186, [Class 70].
Patent GB-701501-A (GB)
Title: Improvements in or relating to wool and like clippers
IPC: B26B19/24
Filed: 1948-11-04
Abstract: 701,501. Sheep shears. SUNBEAM CORPORATION. Nov. 4, 1948, No. 28694/48. Class 131 A shearing clipper having a comb and cutter mechanism comprising an oscillatable fork pivotally mounted between its ends, one of which engages the cutter while the other is operatively connected to a rotary driving means extending axially through a hollow portion of the shearing clipper is characterized in that a flexible diaphragm is provided having a ring portion with a bead received in an annular groove in the clipper body and sealingly attached to the fork between the pivoted mounting and the cutter and closing the forward end of the hollow part of the clipper against the entry of dirt and the escape of lubricant, means being provided to urge the bead into the groove. As shown the chamber 17 forming a reservoir for lubricant and enclosing the driving means is closed at its forward end by a circular diaphragm 69 received in a recess 70 in the head 12. The peripheral ring portion 72 of the diaphragm is provided with a bead 73 which is received in an annular groove 74 in the head 12. A washer 76 and an expansion snap ring 77, bevelled to engage a corresponding recess 78 in the head, secures the outer rim of the diaphragm to the head. The inner periphery of the diaphragm is in the form of a sleeve 79 received between shoulders 81, 82 on the fork 27 between the pivot and the cutter. Specifications 701,518, 701,519, 701,520 and 701,521 are referred to.
Patent GB-281082-A (GB)
Title: Improvements in mechanism for the operation of valves
IPC: F01L1/30
Filed: 1926-11-15
Abstract: 281,082. Sidwell, F. A. Nov. 15, 1926. Actuating - mechanism.-In valve operating mechanism in which a. valve or tappet is operated positively for both opening and closing by a lever, the end 17 of the rocking lever operates between two contact. members or buttons 25,26 disposed between abutmemts 22, 23 secured to the valve stem 19, with or without interposed springs. The inner faces of the contact members are partly cylindrical or spherical for engagement with the end of the lever, and the outer faces are flat and are slidable in a direction at. right angles to the axis of the valve stem in accordance, with the angular movement of the end of the rocking lever.
Patent GB-1516283-A (GB)
Title: Catch for a door
IPC: E05C19/06
Filed: 1976-07-09
Abstract: 1516283 Catch BRACKETING CENTERING & LATHING Ltd 9 July 1976 28758/76 Heading E2A  A catch for a door comprises sections 13, 14, Fig. 2, formed from resilient sheet material such as spring steel, the section 13 having a mounting portion 15 provided with screw-holes, and an arm 16 which is engageable with the section 14, and the section 14 being formed with a lead-in portion 17, a locking-portion 18, a lead-out portion 19 and a mounting portion 21 provided with screw-holes. In use the section 13 is mounted on a door (not shown) for example, and the section 14 is mounted on a door-surround (not shown). The closing of the door causes the section 13, Fig. 3, to first engage the lead-in position 17 of the section 14, Fig. 3b and then engage the locking portion 18, Fig. 3c. The door may be moved beyond the closed position, the lead-out portion 19 having facilitated the release of the arm 16 of the section 13 as shown in Fig. 3d. Opening movement of the door effects the release of the sections 13 and 14 as shown in Figs. 3e and 3f. In a modification a resilient rubber buffer 24, Fig. 4, is provided and the arm 16 is reduced in length so as to provide clearance for the buffer. When the door is closed the buffer 24, Fig. 5, is in compression between the door 11 and an attachment surface 23 of the section 14 such that the buffer resists movement of the door against movement beyond the closed position unless a predetermined force is supplied.
Patent GB-891141-A (GB)
Title: Casting of metals
Inventor: TUCK HENRY CHARLES
IPC: B22D11/128
Filed: 1957-09-13
Abstract: 891,141. Continuous-casting machines. GLACIER METAL CO. Ltd. Sept. 10, 1958 [Sept. 13, 1957], No. 28952/57. Class 83 (1). A continuous-casting apparatus comprises a die 7, having one end reciprocating in a molten metal bath 1 and the other end projecting from the bath and being cooled, and means 22 for holding the solidified cast metal during the inward movements of the die. The die is reciprocated by a lever 16a moving between adjustable limit screws 18 and connected to pivoted gripping jaws 13. A freely pivoted apertured bar 22 acts ratchet fashion to prevent inward movement of the cast bar 25. Water cooling rings 24, 24a are provided together with another around the bar itself. The rates of reciprocation and cooling may be controlled automatically. The process may be carried out under protective or inert atmospheres. Tubes may be cast by supporting a mandrel within the inner end of the die. The process is started by inserting into the die a rod having a socketed or grooved end.
Patent GB-192474-A (GB)
Title: Improvements in and relating to the art of producing ball bearing structures
IPC: B21K1/04
Filed: 1921-11-01
Abstract: 192,474. Ford, H. Nov. 1, 1921. Bearings and bearing-surfaccs.-The groove in a race-ring for ball bearings is formed by subjecting a ring blank to pressure application intermediate its sides while maintaining the overall dimensions, whereby the density across a crosssection is varied, with the portion of greater density at the bottom of the groove. For an outer race-ring, a heated blank 10 is first formed with an outer groove 11, Fig. 1, by means of a pressure roll b, the blank being supported on a mandrel a with side supports a<1>. The groove 11 is of greater width and of less depth than the final ball groove. An internal groove 12, Fig. 3, is next formed by a pressure rod d, the ring being supported externally by a ring c and side supports c<1> so that the metal under the first groove 11 is displaced outwardly to fill the groove. The ring is then hardened, and the groove 12 is turned and ground to size. The groove 12 is provided with a groove 14, Fig. 5, whereby the two sides of the groove 12 may be ground separately. The outer corners of the ring are rounded off by a grinding-tool, the inner corners 13 are chamfered, and the sides and cylindrical faces are trimmed to size.
Patent GB-1382939-A (GB)
Title: Heterocyclic benzamide compounds processes for making them and compositions containing them
IPC: C07D207/08
Filed: 1973-06-20
Abstract: 1382939 Benzamido-pyrrolidines and -piperidines DELMAR CHEMICALS Ltd 20 June 1973 [23 June 1972] 29191/73 Heading C2C The invention comprises novel compounds (I) wherein A represents a hydrogen atom, a sulfonic acid group or a chlorosulfonyl group; R 1  represents a hydrogen atom or a C 1  to C 6  alkyl group; R 2  represents a hydrogen atom or a C, to C 6  alkyl group; R 3  represents a C 1  to C 6  alkyl group; R 4  and R 5 , which may be the same or different, each represents a hydrogen atom or a C 1  to C 6  alkyl group; n is 0, 1 or 2 and m is 1 or 2; and N-oxides, quaternary ammonium and acid addition salts thereof; they are made by amidation and, if desired, alkylation in order to introduce an R 1 -alkyl group. 2-Methoxybenzoyl chloride is also prepared. Pharmaceutical preparations showing analgesic and hypotensive actions contain (I) where A is H as active ingredient, Administration may be orally or rectally.
Patent GB-152537-A (GB)
Title: A new or improved changing-picture toy
IPC: A63H33/22
Filed: 1919-11-24
Abstract: 152,537. Jones, R. Nov. 24, 1919. Rotary disk apparatus; moving and changing apparatus.-A changing-picture toy, which may be used for advertising, consists of a disk marked with concentric circular lines of various widths and mounted for rotation behind a covering sheet provided with suitable apertures and with pictures associated with the markings on the rotary disk. The pictures on the covering sheet represent human beings or animals, and the apertures occupy the places of the eyes and mouths. The markings a, f of the disk are of such form and colour that when seen through the apertures of the covering disk, they represent the eyes and mouth respectively, and when the disk is rotated the eyes and mouth appear to move. Other spaces H on the disk can be used for panoramic pictures to be seen through suitable apertures on the front sheet.
Patent GB-1168082-A (GB)
Title: Improved Pin Plate or Block for Tenter Machines
Inventor: STEWART WILLIAM RENNIE
IPC: D06C3/10
Filed: 1966-06-29
Abstract: 1,168,082. Tentering-machines. WM. R. STEWART & SONS (HACKLEMAKERS) Ltd. 26 Sept., 1967 [29 June, 1966], No. 29203/ 66. Heading D1S. One surface of a tenter pin plate or block 1 is provided with a row or rows of sharp pins 2 alternating with at least one row of projections 3 and the arrangement is such that a space or spaces for the passage of air is provided between the web of material being tentered and at least a major part of the area of the surface. In one embodiment, Fig. 1, the projections 3 comprise inclined blunt stainless steel pins 3 which are of less height but may be of larger diameter than the pins 2. The pins 2 may be arranged in rows alternately with the pins 3 or the pins 2, 3 may be arranged alternately in three or more rows. In a further embodiment, Fig. 2 (not shown), the block is formed with longitudinally extending triangular cross-section projections (6) and the pins (2) are arranged in the space or spaces therebetween. In a modification (not shown), transverse or oblique slots are formed in the triangular cross-section projections to increase the air flow. In another embodiment, Fig. 3 (not shown), rows of spaced pyramidal projections (7) are provided with the pins (2) arranged in the spaces therebetween.
Patent GB-1262996-A (GB)
Title: Maser tube of an infra-red maser system
IPC: H01S3/034
Filed: 1969-06-10
Abstract: 1,262,996. Lasers. MATSUSHITA ELECTRIC INDUSTRIAL CO. 10 June, 1969 [14 June, 1968], No. 29235/69. Heading H1C. The output mirror of a gas laser resonant cavity comprises a transparent material coated over part of its surface with a pattern of reflective material. The mirror may be plane or curved, the transparent material being a gallium or germanium compound, for an infra-red laser, coated with gold or silver. The coating may be in stripes, Fig. 3A, or may form a raised dotted or net pattern, Figs. 3B, 3C, respectively (not shown). When a fine pattern is used the mirror is stated to provide mode selection and to ease alignment requirements.
Patent GB-893699-A (GB)
Title: Improvements in double twist spindles
Inventor: NIMTZ KLAUS
IPC: D01H7/86
Filed: 1959-08-26
Abstract: 893,699. Double-twist spindles. NIMTZ, H., and NIMTZ, K., [trading as VOLKMANN & CO.]. Aug. 26, 1959, No. 29246/59. Class 120(2) [Also in Group XXXV] In a double twist spindle, the package container is held stationary by at least one permanent magnet system comprising a rectangular permanent magnet plate having poles on its longer faces one of which is backed by a soft-iron stirrup the shanks of which are spaced from the shorter faces of the plate and project and present poles towards the wall of the container opposite a soft iron member on the other side of the wall. In Fig. 1, the system comprises a plate 4 and stirrup 5 the shanks 6 of which are spaced away from the plate, the system being enclosed in a non-magnetic container 3 so arranged that the face 7 of the plate is parallel to a plane tangential to the container 1 and spaced from the container to allow a space 9 for the ballooning thread. The soft iron member is a second stirrup 5 backing a magnet 4 and adjustably supported inside the container by a yoke 10 secured by a screw 12. The magnet 4 and shank ends 14 are in this case arranged to conform to the curvature of the container. The ends of the case 3 are shaped as shown to prevent damage to the thread. In Fig. 2, the magnets 21, 21<SP>1</SP> are arranged at the base of the container and a guide 22 for the thread is provided on a driven flyer 18. The magnets may be of barium ferrite and the poles are arranged as in Fig. 1.